@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Hairline.ttf") format("truetype");
  font-style: normal;
  font-weight: 100;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-HairlineItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 100;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Thin.ttf") format("truetype");
  font-style: normal;
  font-weight: 200;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-ThinItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 200;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Light.ttf") format("truetype");
  font-style: normal;
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-LightItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Italic.ttf") format("truetype");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Medium.ttf") format("truetype");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-MediumItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Semibold.ttf") format("truetype");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-SemiboldItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Bold.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-BoldItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Heavy.ttf") format("truetype");
  font-style: normal;
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-HeavyItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-Black.ttf") format("truetype");
  font-style: normal;
  font-weight: 900;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("/fonts/Lato-BlackItalic.ttf") format("truetype");
  font-style: italic;
  font-weight: 900;
  font-display: swap;
}

:root {
  --violet: #4658d6;
  --violet-dark: #3344b5;
  --yellow: #d6b87c;
  --ink: #111722;
  --muted: #647083;
  --line: #d7dce5;
  --soft: #eef0f3;
  --soft-violet: #e9ecf2;
  --green: #387c70;
  --red: #b14f5a;
  --white: #ffffff;
  --page-bg: #f6f4ef;
  --header-rgb: 246, 244, 239;
  --palette-primary: #1d2a44;
  --palette-accent: #d6b87c;
  --brand-logo: url("/brand/palette-preview/logo-nocturne.png");
  --shadow: 0 18px 50px rgba(28, 30, 40, 0.08);
  font-family: Lato, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* Brand palette preview mode. It is enabled only with ?palette=<name>. */
:root[data-palette="nocturne"] {
  --violet: #4658d6;
  --violet-dark: #3344b5;
  --yellow: #d6b87c;
  --ink: #111722;
  --muted: #647083;
  --line: #d7dce5;
  --soft: #eef0f3;
  --soft-violet: #e9ecf2;
  --green: #387c70;
  --red: #b14f5a;
  --page-bg: #f6f4ef;
  --header-rgb: 246, 244, 239;
  --palette-primary: #1d2a44;
  --palette-accent: #d6b87c;
  --brand-logo: url("/brand/palette-preview/logo-nocturne.png");
}

:root[data-palette="graphite"] {
  --violet: #23262d;
  --violet-dark: #17191e;
  --yellow: #7a82f6;
  --ink: #17191e;
  --muted: #626b7a;
  --line: #d9dce2;
  --soft: #ebecef;
  --soft-violet: #e7e8f2;
  --green: #347d68;
  --red: #ad4f58;
  --page-bg: #f4f5f7;
  --header-rgb: 244, 245, 247;
  --palette-primary: #23262d;
  --palette-accent: #7a82f6;
  --brand-logo: url("/brand/palette-preview/logo-graphite.png");
}

:root[data-palette="conservatory"] {
  --violet: #332535;
  --violet-dark: #251b27;
  --yellow: #b07a5d;
  --ink: #211c22;
  --muted: #756775;
  --line: #ded4d5;
  --soft: #eee7e6;
  --soft-violet: #ede4e5;
  --green: #527664;
  --red: #a14e56;
  --page-bg: #f7f2ed;
  --header-rgb: 247, 242, 237;
  --palette-primary: #332535;
  --palette-accent: #b07a5d;
  --brand-logo: url("/brand/palette-preview/logo-conservatory.png");
}

:root[data-palette="deep-teal"] {
  --violet: #163c3e;
  --violet-dark: #102d2f;
  --yellow: #b08a49;
  --ink: #142223;
  --muted: #5d7170;
  --line: #d3dedb;
  --soft: #e6ece9;
  --soft-violet: #dfe9e6;
  --green: #2c7674;
  --red: #a65255;
  --page-bg: #f4f3ee;
  --header-rgb: 244, 243, 238;
  --palette-primary: #163c3e;
  --palette-accent: #b08a49;
  --brand-logo: url("/brand/palette-preview/logo-deep-teal.png");
}

:root[data-palette] body {
  background: var(--page-bg);
}

:root[data-palette] .topbar {
  background: rgba(var(--header-rgb), 0.94);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-bottom-right-radius: 18px;
  border-bottom-left-radius: 18px;
}

:root[data-palette] .brand {
  width: 164px;
  height: 34px;
  background: var(--brand-logo) left center / contain no-repeat;
}

:root[data-palette] .brand > * {
  display: none;
}

:root[data-palette] .hero-media {
  background:
    radial-gradient(circle at 76% 24%, color-mix(in srgb, var(--palette-accent) 66%, transparent), transparent 18%),
    linear-gradient(135deg, var(--soft), var(--soft-violet) 48%, var(--page-bg));
}

:root[data-palette] .hero-media::before {
  background-image:
    linear-gradient(115deg, transparent 0 44%, color-mix(in srgb, var(--violet) 17%, transparent) 44% 46%, transparent 46%),
    repeating-linear-gradient(105deg, color-mix(in srgb, var(--violet) 18%, transparent) 0 1px, transparent 1px 18px);
}

:root[data-palette] .info-card.violet,
:root[data-palette] .price-card {
  background: var(--palette-primary);
}

:root[data-palette] .panel,
:root[data-palette] .quiz-card {
  border: 1px solid var(--line);
  border: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  background: var(--white);
  background: color-mix(in srgb, #ffffff 82%, var(--page-bg));
  box-shadow: var(--shadow);
  box-shadow: 0 16px 42px color-mix(in srgb, var(--ink) 7%, transparent);
}

:root[data-palette] .lesson-card {
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

:root[data-palette] .lesson-card:hover {
  background: #ffffff;
}

:root[data-palette] .btn.primary {
  box-shadow: 0 8px 22px color-mix(in srgb, var(--violet) 22%, transparent);
}

:root[data-palette] .tag.yellow,
:root[data-palette] .sticker {
  color: var(--ink);
}

.component-showcase {
  width: min(100%, 1320px);
  margin: 0 auto;
  padding: 46px 42px 64px;
}

.component-showcase-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 36px;
  margin-bottom: 28px;
}

.component-showcase-heading h1 {
  margin: 14px 0 0;
  font-size: 42px;
  line-height: 1.05;
  font-weight: 600;
}

.component-showcase-heading > p {
  max-width: 450px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.preview-media-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.preview-component-panel {
  min-width: 0;
  height: 365px;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: color-mix(in srgb, #ffffff 84%, var(--page-bg, #ffffff));
  box-shadow: 0 14px 34px color-mix(in srgb, var(--ink) 7%, transparent);
}

.preview-component-title,
.preview-state-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.preview-component-title > span,
.preview-state-label > span {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-size: 11px;
  font-weight: 800;
}

.preview-component-title strong,
.preview-component-title small {
  display: block;
}

.preview-component-title strong {
  font-size: 16px;
}

.preview-component-title small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.preview-image-panel figure {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  height: 285px;
  margin: 0;
  overflow: hidden;
  border-radius: 14px;
  background: var(--soft);
}

.preview-image-panel img {
  width: 100%;
  height: 246px;
  background: var(--page-bg, #ffffff);
  object-fit: contain;
}

.preview-image-panel figcaption {
  padding: 10px 14px;
  color: var(--muted);
  font-size: 12px;
}

.preview-component-panel .lesson-audio,
.preview-component-panel .lesson-video,
.preview-component-panel .lesson-carousel {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

.preview-component-panel .lesson-audio,
.preview-component-panel .lesson-video {
  padding: 22px;
  background: var(--soft-violet);
}

.preview-audio-panel .lesson-audio {
  margin-top: 58px;
}

.preview-video-panel .lesson-video {
  padding: 14px;
}

.preview-video-panel .video-inner {
  grid-template-columns: 150px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
}

.preview-video-panel .video-player {
  min-height: 244px;
}

.preview-gallery-panel .carousel-main {
  --carousel-pad: 18px;
  height: 185px;
  border-radius: 14px;
}

.preview-gallery-panel .carousel-caption {
  margin-top: 7px;
  font-size: 11px;
}

.preview-gallery-panel .carousel-thumbs {
  gap: 8px;
  margin-top: 7px;
}

.preview-gallery-panel .carousel-thumb {
  width: 70px;
}

.preview-gallery-panel .carousel-arrow {
  width: 38px;
  height: 38px;
}

.preview-gallery-panel .carousel-arrow.prev { left: -12px; }
.preview-gallery-panel .carousel-arrow.next { right: -12px; }

.quiz-showcase {
  padding-top: 54px;
}

.preview-quiz-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.preview-quiz-state {
  min-width: 0;
}

.preview-state-label {
  min-height: 36px;
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 13px;
}

.preview-state-label.correct > span {
  background: color-mix(in srgb, var(--green) 18%, white);
  color: var(--green);
}

.preview-state-label.wrong > span {
  background: color-mix(in srgb, var(--red) 16%, white);
  color: var(--red);
}

.preview-state-card {
  width: 100%;
  max-width: 100%;
  min-height: 540px;
  margin: 0;
  padding: 26px;
  background: color-mix(in srgb, #ffffff 88%, var(--page-bg, #ffffff));
}

.preview-state-card h3 {
  font-size: 22px;
}

.preview-state-card .prompt,
.preview-state-card .option {
  font-size: 16px;
}

.preview-state-card .option {
  padding: 7px 10px;
}

.preview-state-card .explanation {
  grid-column: 2;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.preview-state-card .explanation.correct { color: var(--green); }
.preview-state-card .explanation.wrong { color: var(--red); }

.preview-check-button {
  width: 100%;
  margin-top: 28px;
}

.preview-result-message {
  margin-top: 24px;
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
}

.preview-result-message.correct {
  background: color-mix(in srgb, var(--green) 13%, white);
  color: var(--green);
}

.preview-result-message.wrong {
  background: color-mix(in srgb, var(--red) 11%, white);
  color: var(--red);
}

@media (max-width: 900px) {
  .component-showcase-heading { display: grid; }
  .preview-media-grid,
  .preview-quiz-grid { grid-template-columns: 1fr; }
  .preview-component-panel { height: auto; }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--page-bg);
  font-family: Lato, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  padding: 0 24px;
  height: 74px;
  background: rgba(var(--header-rgb), 0.94);
  backdrop-filter: blur(14px);
  border-bottom-left-radius: 28px;
  border-bottom-right-radius: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
  font-size: 24px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--violet);
  color: var(--yellow);
  font-weight: 820;
}

.nav {
  display: flex;
  gap: 34px;
  color: var(--muted);
  font-size: 19px;
}

.nav a,
.nav button {
  color: var(--muted);
  background: transparent;
}

.actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.account-menu {
  position: relative;
}

.account-menu > summary {
  list-style: none;
}

.account-menu > summary::-webkit-details-marker {
  display: none;
}

.account-avatar {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  overflow: hidden;
  border: 0;
  border-radius: 50%;
  background: var(--violet);
  color: var(--white);
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
}

.account-avatar img,
.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.account-popover {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  display: grid;
  width: 250px;
  padding: 8px;
  border: 0;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 50px rgba(31, 34, 46, 0.14);
}

.account-popover a,
.account-popover button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 6px;
  color: var(--ink);
  text-align: left;
  background: transparent;
}

.account-popover a:hover,
.account-popover button:not(:disabled):hover {
  background: var(--soft);
}

.account-popover button:disabled {
  color: var(--muted);
  cursor: default;
}

.account-popover button small {
  font-size: 12px;
}

.account-person {
  display: grid;
  gap: 2px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid rgba(47, 49, 59, 0.1);
  margin-bottom: 4px;
}

.account-person small {
  overflow: hidden;
  color: var(--muted);
  text-overflow: ellipsis;
}

.account-popover .account-logout {
  border-top: 1px solid rgba(47, 49, 59, 0.1);
  border-radius: 0 0 6px 6px;
  margin-top: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 14px;
  background: var(--soft);
  color: var(--violet);
  font-weight: 660;
  white-space: nowrap;
  cursor: pointer;
}

.btn.primary {
  color: var(--white);
  background: var(--violet);
}

.btn.dark {
  color: var(--white);
  background: var(--ink);
}

.btn.ghost {
  background: transparent;
  color: var(--muted);
}

.btn:disabled {
  cursor: not-allowed;
  color: #aaaeb8;
  background: #f0f1fb;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: var(--soft);
  color: var(--ink);
  cursor: pointer;
}

.icon-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-btn.danger-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: transparent;
  color: #9297a3;
}

.icon-btn.danger-icon:hover {
  color: #b3261e;
  background: #fff0ee;
}

.page {
  width: min(100%, 1900px);
  margin: 0 auto;
}

.landing-shell {
  background: #f7f3eb;
}

.landing-topbar {
  position: relative;
  width: min(100%, 1900px);
  box-sizing: border-box;
  border-bottom: 0 !important;
  border-radius: 0 !important;
  background: linear-gradient(90deg, rgba(247, 243, 235, 0.99) 0 48%, rgba(247, 243, 235, 0.8) 66%, rgba(247, 243, 235, 0.28)) !important;
  backdrop-filter: none;
}

.landing-topbar .actions .btn.primary {
  display: none;
}

.landing-page {
  width: min(100%, 1900px);
  margin: 0 auto;
}

.landing-room-hero {
  position: relative;
  min-height: calc(100svh - 74px);
  overflow: hidden;
  background: #f7f3eb;
}

.landing-room-art {
  position: absolute;
  z-index: 1;
  top: 0;
  right: -5%;
  width: 72%;
  height: 100%;
  background-image: url("/brand/home/student-writing-clean-left.jpg");
  background-position: right center;
  background-repeat: no-repeat;
  background-size: auto 100%;
  filter: saturate(0.86) contrast(0.97);
}

.landing-room-art.custom {
  background-position: center;
  background-size: cover;
}

.landing-room-wash {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, #f7f3eb 0 43%, rgba(247, 243, 235, 0.98) 47%, rgba(247, 243, 235, 0.52) 52%, rgba(247, 243, 235, 0) 58%);
}

.landing-desk-line {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 0;
  left: 0;
  height: 90px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0 32%, rgba(214, 184, 124, 0.19) 33% 100%);
  clip-path: polygon(0 35%, 100% 0, 100% 100%, 0 100%);
}

.landing-room-grid {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: center;
  min-height: calc(100svh - 74px);
  padding: 30px clamp(24px, 5vw, 68px) 72px;
  box-sizing: border-box;
}

.landing-room-copy {
  position: relative;
  z-index: 5;
  max-width: 560px;
  padding: 32px 34px 34px 0;
}

.landing-room-copy::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: 0;
  left: -68px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--yellow), transparent);
}

.landing-eyebrow {
  margin: 0 0 22px;
  color: var(--violet-dark);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.landing-room-copy h1 {
  min-height: 3.12em;
  max-width: 100%;
  margin: 0;
  color: var(--palette-primary);
  font-family: Lato, ui-sans-serif, system-ui, sans-serif;
  font-size: clamp(44px, 4.8vw, 64px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.landing-title-line,
.landing-title-dynamic {
  display: block;
}

.landing-title-line,
.landing-title-dynamic {
  white-space: nowrap;
}

.landing-title-dynamic {
  min-height: 1.08em;
  color: var(--violet);
}

.landing-type-cursor {
  display: inline-block;
  width: 0.055em;
  height: 0.82em;
  margin-left: 0.05em;
  translate: 0 0.07em;
  background: var(--yellow);
  animation: landing-cursor-blink 0.75s steps(1, end) infinite;
}

.landing-type-cursor.is-gone {
  opacity: 0;
  animation: none;
}

@keyframes landing-cursor-blink {
  50% { opacity: 0; }
}

.landing-lede {
  max-width: 500px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.55;
}

.landing-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
}

.landing-actions .btn {
  min-height: 48px;
  border-radius: 8px;
  padding: 0 21px;
  font-size: 14px;
  font-weight: 600;
}

.landing-actions .landing-secondary {
  border: 1px solid rgba(29, 42, 68, 0.18);
  background: rgba(247, 243, 235, 0.82);
  color: var(--palette-primary);
}

.landing-actions .btn:focus-visible,
.landing-topbar .btn:focus-visible,
.landing-topbar .brand:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--violet) 54%, white);
  outline-offset: 3px;
}

.section {
  padding: 80px 48px;
}

.hero {
  min-height: calc(100vh - 90px);
  display: grid;
  grid-template-columns: minmax(420px, 0.92fr) minmax(520px, 1.08fr);
  align-items: center;
  gap: 74px;
  padding: 110px 38px 90px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(56px, 5.1vw, 98px);
  line-height: 1.08;
  font-weight: 430;
}

.sticker {
  display: inline-block;
  padding: 0.04em 0.32em 0.12em;
  border-radius: 26px;
  background: var(--yellow);
  color: #141414;
  font-weight: 760;
  transform: rotate(1.5deg);
}

.hero p {
  max-width: 710px;
  margin: 44px 0 34px;
  color: var(--muted);
  font-size: 30px;
  line-height: 1.45;
}

.hero-media {
  position: relative;
  min-height: 500px;
  border-radius: 28px;
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 24%, rgba(255, 242, 0, 0.62), transparent 17%),
    linear-gradient(135deg, #f1f2ff, #ebeaff 48%, #f8f8fb);
  box-shadow: var(--shadow);
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(115deg, transparent 0 44%, rgba(98, 98, 241, 0.16) 44% 46%, transparent 46%),
    repeating-linear-gradient(105deg, rgba(98, 98, 241, 0.18) 0 1px, transparent 1px 18px);
  opacity: 0.7;
}

.hero-media.custom {
  background-size: cover;
  background-position: center;
}

.hero-visual {
  position: absolute;
  inset: auto 7% 8% auto;
  width: min(56%, 520px);
  aspect-ratio: 1;
  border-radius: 38px;
  background: var(--white);
  box-shadow: 0 22px 60px rgba(26, 28, 36, 0.16);
  padding: 36px;
  transform: rotate(-2deg);
}

.staff-lines {
  position: absolute;
  left: 10%;
  right: 10%;
  top: 34%;
  height: 130px;
  background: repeating-linear-gradient(to bottom, #2f333a 0 2px, transparent 2px 24px);
  opacity: 0.25;
}

.note {
  position: absolute;
  width: 56px;
  height: 56px;
  border: 8px solid var(--violet);
  border-radius: 50%;
}

.note::after {
  content: "";
  position: absolute;
  left: 38px;
  bottom: 30px;
  width: 8px;
  height: 160px;
  background: var(--violet);
  border-radius: 8px;
}

.note.one {
  left: 18%;
  top: 20%;
}

.note.two {
  right: 20%;
  top: 42%;
  transform: scale(0.82);
}

.wave-band {
  margin: 10px 24px 80px;
  min-height: 430px;
  border-radius: 86px 86px 40px 180px;
  background: var(--violet);
  color: var(--white);
  display: grid;
  place-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.wave-band::before {
  content: "";
  position: absolute;
  inset: -18% -5%;
  background: repeating-radial-gradient(ellipse at 18% 45%, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 14px);
  opacity: 0.55;
}

.wave-band h2 {
  position: relative;
  margin: 0;
  font-size: clamp(44px, 4vw, 72px);
  font-weight: 420;
}

.center-title {
  text-align: center;
  margin-bottom: 58px;
}

.center-title h2 {
  margin: 0 0 20px;
  font-size: clamp(42px, 4vw, 72px);
  font-weight: 430;
}

.center-title p {
  margin: 0 auto;
  max-width: 980px;
  color: var(--muted);
  font-size: 28px;
  line-height: 1.4;
}

.cards-3,
.cards-2 {
  display: grid;
  gap: 36px;
}

.cards-3 {
  grid-template-columns: repeat(3, 1fr);
}

.cards-2 {
  grid-template-columns: repeat(2, 1fr);
}

.info-card {
  min-height: 245px;
  border-radius: 24px;
  padding: 40px;
  background: var(--soft);
  position: relative;
  overflow: hidden;
}

.info-card.violet {
  background: var(--violet);
  color: var(--white);
}

.info-card h3 {
  margin: 0 0 20px;
  font-size: 36px;
  font-weight: 440;
}

.info-card p {
  margin: 0;
  color: var(--muted);
  font-size: 24px;
  line-height: 1.45;
}

.info-card.violet p {
  color: rgba(255, 255, 255, 0.92);
}

.icon-line {
  position: absolute;
  right: 32px;
  bottom: -12px;
  font-size: 94px;
  color: var(--violet);
  opacity: 0.9;
}

.violet .icon-line {
  color: var(--white);
}

.mosaic {
  display: grid;
  grid-template-columns: 1.1fr 0.75fr 0.75fr;
  gap: 36px;
  background: var(--soft);
}

.mosaic .info-card {
  background: var(--white);
}

.mosaic .wide {
  grid-row: span 1;
}

.training {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.yellow-panel {
  min-height: 610px;
  border-radius: 24px 110px 24px 110px;
  background: var(--yellow);
  position: relative;
  overflow: hidden;
}

.yellow-panel::after {
  content: "1 2 3";
  position: absolute;
  inset: auto 50px 40px auto;
  font-size: 92px;
  font-weight: 820;
  color: rgba(48, 51, 58, 0.12);
}

.training h3 {
  margin: 0 0 22px;
  font-size: 42px;
  font-weight: 430;
}

.training p {
  color: var(--muted);
  font-size: 28px;
  line-height: 1.42;
}

.author {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
}

.author-photo {
  min-height: 650px;
  border-radius: 28px 95px 28px 95px;
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--violet) 12%, transparent), color-mix(in srgb, var(--yellow) 14%, transparent)),
    linear-gradient(135deg, #e5e7ee, #fbfbfc);
  position: relative;
  overflow: hidden;
}

.author-photo.custom {
  background-size: cover;
  background-position: center;
}

.author-photo::before {
  content: "RESOLF";
  position: absolute;
  right: 40px;
  bottom: 32px;
  color: color-mix(in srgb, var(--violet) 26%, transparent);
  font-size: 86px;
  font-weight: 800;
}

.label-sticker {
  display: inline-block;
  margin-bottom: -20px;
  padding: 14px 28px;
  background: var(--violet);
  color: var(--white);
  border-radius: 14px;
  font-size: 34px;
  transform: rotate(-5deg);
}

.author h2 {
  margin: 0 0 36px;
  font-size: clamp(46px, 4.2vw, 72px);
  font-weight: 430;
}

.check-list {
  display: grid;
  gap: 24px;
  color: var(--muted);
  font-size: 30px;
  line-height: 1.42;
}

.check-list div {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 22px;
}

.check-list span:first-child {
  color: var(--violet);
  font-size: 42px;
  line-height: 1;
}

.pricing {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 42px;
  align-items: stretch;
}

.lesson-preview-list {
  display: grid;
  gap: 28px;
}

.preview-lesson {
  padding: 38px 48px;
  border-radius: 24px;
  background: var(--soft);
  color: #aeb2bd;
}

.preview-lesson.active {
  color: var(--ink);
}

.preview-lesson h3 {
  margin: 0 0 12px;
  font-size: 36px;
  font-weight: 430;
}

.preview-lesson p {
  margin: 0;
  font-size: 26px;
}

.price-card {
  background: var(--violet);
  color: var(--white);
  border-radius: 28px;
  padding: 56px 50px;
}

.price-card h3 {
  margin: 0 0 30px;
  font-size: 42px;
  font-weight: 430;
}

.price-card ul {
  display: grid;
  gap: 20px;
  padding: 0;
  margin: 0 0 42px;
  list-style: none;
  font-size: 24px;
  line-height: 1.34;
}

.price-card li::before {
  content: "✓";
  margin-right: 18px;
  color: var(--yellow);
}

.price {
  margin: 0 0 28px;
  font-size: 44px;
  font-weight: 780;
}

.footer {
  display: grid;
  grid-template-columns: 1fr 0.75fr 1.1fr;
  gap: 40px;
  padding: 64px 72px;
  background: var(--ink);
  color: var(--white);
}

.footer-brand {
  display: block;
  width: min(220px, 100%);
  margin: 0 0 24px;
}

.footer-brand img {
  display: block;
  width: 100%;
  height: auto;
}

.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.76);
}

.auth-layout,
.workspace {
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  position: sticky;
  top: 74px;
  height: calc(100vh - 74px);
  padding: 28px 18px;
  border-right: 1px solid var(--line);
  background: #fbfbfd;
  overflow: auto;
}

.sidebar h2 {
  margin: 10px 14px 28px;
  font-size: 24px;
}

.side-link {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  text-decoration: none;
  font-weight: 620;
}

.side-link.active {
  background: var(--soft-violet);
  color: var(--violet-dark);
}

.content {
  padding: 42px 52px 80px;
}

.panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.panel.soft {
  border: 0;
  background: var(--soft);
  box-shadow: none;
}

.registration-captcha {
  min-height: 100px;
}

.registration-captcha-status:empty {
  display: none;
}

.panel h1,
.panel h2,
.content h1 {
  margin: 0 0 22px;
  font-size: 38px;
  font-weight: 520;
}

.form-grid {
  display: grid;
  gap: 16px;
}

.questionnaire-panel {
  width: min(100%, 860px);
  margin: 0 auto;
}

.profile-questionnaire-form {
  gap: 22px;
}

.account-type-picker {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.account-type-picker legend {
  grid-column: 1 / -1;
  margin-bottom: 4px;
  padding: 0;
  font-size: 18px;
  font-weight: 700;
}

.account-type-picker label {
  position: relative;
  display: block;
  min-width: 0;
  cursor: pointer;
}

.account-type-picker input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.account-type-picker label > span {
  display: grid;
  align-content: start;
  gap: 6px;
  min-height: 112px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  transition: border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

.account-type-picker label:hover > span {
  border-color: rgba(98, 98, 241, 0.55);
}

.account-type-picker input:checked + span {
  border-color: var(--violet);
  background: var(--soft-violet);
  box-shadow: inset 0 0 0 1px var(--violet);
}

.account-type-picker input:focus-visible + span {
  outline: 3px solid rgba(98, 98, 241, 0.2);
  outline-offset: 2px;
}

.account-type-picker small {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}

.profile-dynamic-section {
  display: grid;
  gap: 16px;
}

.profile-dynamic-section[hidden] {
  display: none;
}

.profile-dynamic-section h3 {
  margin: 6px 0 0;
  font-size: 20px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.login-field-error {
  min-height: 1.25em;
  color: #b3261e;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.25;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 14px;
  background: var(--white);
  color: var(--ink);
}

.field textarea {
  min-height: 120px;
  padding: 14px;
  resize: vertical;
}

.field input[type="file"] {
  min-height: 48px;
  padding: 5px 8px;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.field input[type="file"]::file-selector-button {
  min-height: 36px;
  margin-right: 12px;
  border: 0;
  border-radius: 9px;
  padding: 0 14px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.field input[type="file"]:hover::file-selector-button {
  background: #dedfff;
}

.custom-select {
  position: relative;
  width: 100%;
  min-width: 0;
}

.custom-select-native {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  min-height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  opacity: 0;
  pointer-events: none;
}

.custom-select-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  color: var(--ink);
  line-height: 1.25;
  text-align: left;
}

.custom-select-button:hover {
  border-color: #b9bbca;
}

.custom-select-button:focus-visible,
.custom-select.open .custom-select-button {
  outline: 3px solid rgba(98, 98, 241, 0.16);
  border-color: var(--violet);
}

.custom-select-button:disabled {
  cursor: not-allowed;
  background: var(--soft);
  color: var(--muted);
  opacity: 0.72;
}

.custom-select-chevron {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin: -4px 3px 0 0;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 150ms ease, margin 150ms ease;
}

.custom-select.open .custom-select-chevron {
  margin-top: 4px;
  transform: rotate(225deg);
}

.custom-select-menu {
  position: fixed;
  z-index: 1000;
  display: none;
  overflow-y: auto;
  padding: 6px;
  border: 0;
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 16px 40px rgba(28, 30, 40, 0.16);
}

.custom-select.open .custom-select-menu {
  display: grid;
  gap: 2px;
}

.custom-select-option {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 42px;
  padding: 8px 10px;
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  line-height: 1.3;
  text-align: left;
}

.custom-select-option.has-swatch {
  grid-template-columns: 18px 16px minmax(0, 1fr);
}

.custom-select-current {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.custom-select-swatch {
  display: inline-block;
  width: 15px;
  height: 15px;
  border: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
  border-radius: 50%;
}

.custom-select-swatch[hidden] { display: none; }
.custom-select-swatch.violet { background: var(--soft-violet); }
.custom-select-swatch.yellow { background: var(--yellow); }

.custom-select-option:hover,
.custom-select-option:focus-visible {
  outline: 0;
  background: var(--soft);
}

.custom-select-option.selected {
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-weight: 700;
}

.custom-select-check {
  color: transparent;
  font-weight: 800;
  text-align: center;
}

.custom-select-option.selected .custom-select-check {
  color: var(--violet);
}

.custom-select-option:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.catalog {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.lessons-page {
  width: min(100%, 1280px);
  margin: 0 auto;
}

.lesson-view-tabs {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.lesson-view-tabs a,
.lesson-view-tabs button {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 48px;
  padding: 0;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  font-weight: 700;
}

.lesson-view-tabs a.active {
  color: var(--ink);
}

.lesson-view-tabs a.active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--violet);
}

.lesson-view-tabs button:disabled {
  cursor: default;
  opacity: 0.58;
}

.lesson-view-tabs small {
  font-size: 11px;
  font-weight: 700;
}

.lesson-card {
  height: 248px;
  min-height: 248px;
  overflow: hidden;
  padding: 22px;
  border: 0;
  border-radius: 18px;
  background: var(--soft);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 18px;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.lesson-card > h2 {
  margin: 0;
  color: inherit;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: 0;
}

.lesson-card > p {
  margin: auto 0 0;
  color: inherit;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0;
}

.lesson-card:hover {
  background: #f1f2f8;
  box-shadow: 0 14px 40px rgba(28, 30, 40, 0.08);
  transform: translateY(-1px);
}

.lesson-card.locked {
  position: relative;
  isolation: isolate;
  color: var(--ink);
}

.lesson-card.locked::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background: rgba(223, 226, 233, 0.58);
  content: "";
  pointer-events: none;
}

.lesson-card.locked:hover {
  transform: none;
  box-shadow: none;
}

.exercise-collection-card {
  background: linear-gradient(145deg, var(--soft-violet), #f7f3ff);
}

.exercise-collection-heading,
.library-page-heading {
  max-width: 820px;
  margin: 0 0 32px;
}

.exercise-navigation-slot,
.library-navigation-slot {
  display: flex;
  align-items: flex-start;
  min-height: 32px;
}

.exercise-navigation-slot .lesson-back-link {
  margin-bottom: 0;
}

.exercise-collection-heading h1,
.library-page-heading h1 {
  margin: 0;
}

.exercise-intro {
  max-width: 780px;
  margin: 44px auto 0;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.exercise-intro h1 {
  margin: 14px 0 24px;
}

.exercise-progress {
  display: grid;
  gap: 9px;
  margin: 26px 0 34px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.exercise-progress i {
  display: block;
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--soft);
}

.exercise-progress i::before {
  content: "";
  display: block;
  width: var(--exercise-progress);
  height: 100%;
  border-radius: inherit;
  background: var(--violet);
}

.exercise-announcement {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 19px;
}

.exercise-reader .lesson-audio {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin: 30px -32px;
}

.exercise-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.exercise-answer-button {
  min-height: 68px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-size: 17px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: border-color .16s ease, background .16s ease, transform .16s ease;
}

.exercise-answer-button:hover {
  border-color: var(--violet);
  background: var(--soft-violet);
  transform: translateY(-1px);
}

.exercise-answer-button:disabled {
  cursor: wait;
  opacity: .65;
}

.inversion-choices .exercise-answer-button {
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 10px;
}

.inversion-choices .exercise-answer-button strong {
  color: var(--violet-dark);
  font-size: 22px;
}

.exercise-matrix-wrap {
  max-width: 100%;
  margin-top: 24px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.exercise-matrix {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: var(--white);
}

.exercise-matrix th,
.exercise-matrix td {
  padding: 12px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.exercise-matrix th:first-child {
  width: 38%;
  text-align: left;
}

.exercise-matrix thead th {
  background: var(--soft);
}

.exercise-matrix th span,
.exercise-matrix th small {
  display: block;
}

.exercise-matrix th small {
  margin-top: 4px;
  color: var(--muted);
  font-weight: 400;
}

.exercise-matrix td button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  color: var(--violet);
  font-size: 22px;
  cursor: pointer;
}

.exercise-matrix td button:hover {
  border-color: var(--violet);
  background: var(--soft-violet);
}

.exercise-feedback {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  box-sizing: border-box;
  margin: 30px -32px 0;
  padding: 32px;
  border-left: 5px solid var(--green);
  border-radius: 20px;
  background: #edf9f3;
}

.exercise-feedback.is-wrong {
  border-left-color: var(--red);
  background: #fff2f2;
}

.exercise-feedback > strong {
  font-size: 24px;
}

.exercise-summary {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.exercise-score {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 28px;
  border-radius: 18px;
  background: var(--soft-violet);
}

.exercise-score strong {
  color: var(--violet-dark);
  font-size: 56px;
}

.exercise-summary-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.exercise-summary-facts span {
  padding: 12px 16px;
  border-radius: 999px;
  background: var(--soft);
}

.exercise-resolution {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.exercise-resolution.good {
  border-color: #a9d8c0;
  background: #edf9f3;
}

.exercise-resolution.attention {
  border-color: #edc5b5;
  background: #fff6ee;
}

.exercise-resolution p {
  margin-bottom: 0;
}

.exercise-analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.exercise-analysis-grid section {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.exercise-stat-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.exercise-stat-row b {
  flex: 0 0 auto;
}

.admin-exercise-definitions {
  display: grid;
  gap: 28px;
}

.exercise-definition-editor {
  display: grid;
  gap: 24px;
}

.exercise-definition-editor .block-head > div,
.exercise-bank-panel .block-head > div,
.exercise-bank-upload-form .block-head > div {
  display: grid;
  gap: 5px;
}

.exercise-definition-editor .block-head small,
.exercise-bank-panel .block-head small,
.exercise-bank-upload-form .block-head small {
  color: var(--muted);
}

.exercise-markdown-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  gap: 22px;
}

.exercise-markdown-editor-grid > .field {
  grid-template-rows: auto 1fr;
  min-width: 0;
}

.exercise-definition-editor .exercise-markdown-code-editor {
  min-height: 190px;
  overflow: hidden;
}

.exercise-definition-editor .exercise-markdown-code-editor pre {
  position: absolute;
  inset: 0;
  height: 100%;
  min-height: 100% !important;
}

.exercise-definition-editor .exercise-markdown-code-editor textarea[data-markdown-source] {
  position: relative;
  inset: auto;
  z-index: 1;
  height: 190px;
  min-height: 190px !important;
  resize: vertical;
}

.exercise-markdown-preview {
  box-sizing: border-box;
  height: 100%;
  min-height: 190px;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--soft);
}

.exercise-pairs-editor {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.exercise-pair-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.admin-coverage-matrix .coverage-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  box-sizing: border-box;
  padding: 0;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  vertical-align: middle;
}

.exercise-bank-panel .exercise-matrix-wrap {
  max-width: 980px;
  margin: 22px auto 0;
}

.admin-coverage-matrix {
  min-width: 700px;
  font-size: 14px;
}

.admin-coverage-matrix th,
.admin-coverage-matrix td {
  height: 54px;
  padding: 7px 10px;
}

.admin-coverage-matrix th:first-child {
  width: 38%;
}

.admin-coverage-matrix th small {
  font-size: 12px;
}

.exercise-bank-upload-form {
  gap: 24px;
}

.exercise-bank-upload-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 22px 28px;
}

.exercise-bank-upload-grid .field small {
  min-height: 18px;
}

.exercise-stimulus-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.coverage-count.empty { background: #ffe7e7; color: var(--red); }
.coverage-count.low { background: #fff1ce; color: #87600b; }
.coverage-count.ready { background: #e2f6eb; color: var(--green); }

.exercise-stimuli-table audio {
  display: block;
  width: min(280px, 100%);
  height: 34px;
  margin-top: 7px;
}

.profile-page {
  width: min(100% - 32px, 1000px);
  margin: 0 auto;
}

.profile-heading {
  margin-bottom: 24px;
}

.profile-heading h1 {
  margin-bottom: 8px;
}

.profile-section {
  margin-bottom: 20px;
}

.profile-section h2 {
  margin-top: 0;
}

.profile-section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.profile-section-heading h2 {
  margin-bottom: 0;
}

.profile-edit-button {
  gap: 8px;
}

.profile-edit-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.profile-avatar-row {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 22px 0 28px;
}

.profile-data-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 36px;
  margin: 8px 0 0;
}

.profile-data-list > div {
  min-width: 0;
}

.profile-data-list dt {
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.profile-data-list dd {
  margin: 0;
  overflow-wrap: anywhere;
  line-height: 1.45;
  white-space: pre-wrap;
}

.profile-data-list dd.is-empty {
  color: rgba(48, 51, 58, 0.48);
}

.profile-edit-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.profile-avatar {
  display: grid;
  place-items: center;
  flex: 0 0 88px;
  width: 88px;
  height: 88px;
  overflow: hidden;
  border-radius: 50%;
  background: var(--violet);
  color: var(--white);
  font-size: 25px;
  font-weight: 800;
}

.avatar-crop-dialog {
  width: min(520px, calc(100vw - 32px));
}

.avatar-crop-viewport {
  position: relative;
  width: min(360px, calc(100vw - 96px));
  aspect-ratio: 1;
  margin: 24px auto 20px;
  overflow: hidden;
  border-radius: 8px;
  background: #e5e7ed;
  cursor: grab;
  touch-action: none;
}

.avatar-crop-viewport.dragging {
  cursor: grabbing;
}

.avatar-crop-viewport img {
  position: absolute;
  max-width: none;
  user-select: none;
  pointer-events: none;
}

.avatar-crop-guide {
  position: absolute;
  inset: 0;
  border: 2px solid rgb(255 255 255 / 88%);
  border-radius: 50%;
  box-shadow: 0 0 0 999px rgb(31 35 48 / 42%);
  pointer-events: none;
}

.avatar-crop-zoom {
  display: grid;
  gap: 8px;
  width: min(360px, 100%);
  margin: 0 auto 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.avatar-crop-zoom input {
  width: 100%;
  accent-color: var(--violet);
}

.avatar-crop-error {
  margin: 0 0 12px;
  color: #b3261e;
  font-size: 14px;
}

.field-hint {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.profile-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-wide {
  grid-column: 1 / -1;
}

.profile-status {
  font-size: 20px;
}

.security-toggle-row,
.sessions-heading,
.session-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.security-toggle-row p {
  max-width: 650px;
  margin: 5px 0 0;
  color: var(--muted);
}

.switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch span {
  position: relative;
  display: block;
  width: 48px;
  height: 28px;
  border-radius: 999px;
  background: #d7d9e2;
  cursor: pointer;
  transition: background 0.18s ease;
}

.switch span::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--white);
  box-shadow: 0 1px 4px rgba(31, 34, 46, 0.2);
  transition: transform 0.18s ease;
}

.switch input:checked + span {
  background: var(--violet);
}

.switch input:checked + span::after {
  transform: translateX(20px);
}

.inline-confirm {
  display: flex;
  align-items: end;
  gap: 12px;
  margin: 20px 0;
}

.inline-confirm .field {
  width: min(100%, 280px);
}

.sessions-heading {
  margin-top: 32px;
}

.session-list {
  border-top: 1px solid rgba(47, 49, 59, 0.1);
}

.session-row {
  min-height: 82px;
  border-bottom: 1px solid rgba(47, 49, 59, 0.1);
}

.session-row > div {
  display: grid;
  gap: 3px;
}

.session-row small {
  color: var(--muted);
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-size: 13px;
  font-weight: 760;
  white-space: nowrap;
}

.tag.yellow {
  background: var(--yellow);
  color: var(--ink);
}

.card-labels-editor {
  margin: 16px 0 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.card-labels-editor legend {
  padding: 0 6px;
  font-weight: 700;
}

.card-labels-editor .field-hint {
  display: block;
  margin: 0 0 12px;
}

.card-label-editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(140px, 200px);
  gap: 12px;
  margin-top: 10px;
}

@media (max-width: 600px) {
  .card-label-editor { grid-template-columns: 1fr; }
}

.lesson-reader {
  width: min(100%, 700px);
  max-width: 700px;
  margin: 0 auto;
}

.lesson-back-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: 28px;
  color: var(--violet);
  font-weight: 700;
  line-height: 1.25;
}

.lesson-back-link:hover {
  text-decoration: underline;
}

.lesson-reader h1 {
  margin: 0 0 10px;
  font-size: 42px;
  line-height: 1.16;
  font-weight: 600;
}

.lesson-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 34px;
}

.lesson-block {
  margin: 30px 0;
}

.lesson-next-actions {
  justify-content: center;
  margin-top: 18px;
}

.lesson-transition {
  display: flex;
  justify-content: center;
  margin: 30px 0;
}

.lesson-markdown {
  font-size: 18px;
  line-height: 1.6;
  font-weight: 400;
}

.lesson-markdown p {
  margin: 0 0 22px;
}

.lesson-markdown h1,
.markdown-preview h1,
.lesson-markdown h2,
.markdown-preview h2,
.lesson-markdown h3,
.markdown-preview h3,
.lesson-markdown h4,
.markdown-preview h4,
.lesson-markdown h5,
.markdown-preview h5,
.lesson-markdown h6,
.markdown-preview h6 {
  margin: 36px 0 16px;
  line-height: 1.24;
  font-weight: 700;
}

.lesson-markdown h1,
.markdown-preview h1 { font-size: 42px; }
.lesson-markdown h2,
.markdown-preview h2 { font-size: 34px; }
.lesson-markdown h3,
.markdown-preview h3 { font-size: 28px; }
.lesson-markdown h4,
.markdown-preview h4 { font-size: 24px; }
.lesson-markdown h5,
.markdown-preview h5 { font-size: 18px; }
.lesson-markdown h6,
.markdown-preview h6 { font-size: 16px; color: var(--muted); }

.lesson-markdown ul,
.lesson-markdown ol,
.markdown-preview ul,
.markdown-preview ol {
  margin: 0 0 22px;
  padding-left: 1.45em;
}

.lesson-markdown li,
.markdown-preview li {
  margin: 8px 0;
}

.lesson-markdown pre,
.markdown-preview pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: 14px;
  background: #252932;
  color: #f5f7fb;
  font-size: 16px;
  line-height: 1.5;
}

.lesson-markdown code,
.markdown-preview code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--soft);
  font-size: 0.9em;
}

.lesson-markdown pre code,
.markdown-preview pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.lesson-markdown mark,
.markdown-preview mark {
  padding: 0 4px;
  border-radius: 4px;
  background: var(--yellow);
}

.lesson-markdown a,
.markdown-preview a {
  color: var(--violet-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.lesson-markdown a.file-link::after,
.markdown-preview a.file-link::after {
  content: attr(data-file-kind);
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  padding: 1px 5px 2px;
  border-radius: 5px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-size: 11px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  vertical-align: 0.12em;
}

.task-item input {
  margin-right: 8px;
}

.lesson-markdown img {
  display: block;
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin: 28px -32px;
  max-height: 620px;
  object-fit: contain;
  border-radius: 18px;
  background: var(--soft);
  border: 1px solid var(--line);
}

.lesson-markdown .markdown-figure {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin: 28px -32px;
}

.lesson-markdown .markdown-figure img {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

.lesson-markdown .markdown-figure figcaption {
  max-width: 700px;
  margin: 12px auto 0;
  color: rgba(48, 51, 58, 0.5);
  font-size: 14px;
  line-height: 1.35;
  font-style: normal;
  text-align: center;
}

.lesson-audio {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  box-sizing: border-box;
  margin: 30px -32px;
  padding: 32px;
  border-radius: 20px;
  background: #f0f1fb;
}

.audio-inner {
  display: grid;
  gap: 20px;
  max-width: 700px;
  margin: 0 auto;
}

.audio-main {
  display: flex;
  align-items: center;
  gap: 16px;
}

.audio-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--violet);
  color: var(--white);
  cursor: pointer;
}

.audio-toggle:hover {
  background: var(--violet-dark);
}

.audio-icon-play {
  width: 0;
  height: 0;
  margin-left: 3px;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 12px solid currentColor;
}

.audio-icon-pause {
  position: relative;
  display: none;
  width: 14px;
  height: 16px;
}

.audio-icon-pause::before,
.audio-icon-pause::after {
  content: "";
  position: absolute;
  top: 0;
  width: 5px;
  height: 16px;
  border-radius: 2px;
  background: currentColor;
}

.audio-icon-pause::before {
  left: 1px;
}

.audio-icon-pause::after {
  right: 1px;
}

.lesson-audio.playing .audio-icon-play {
  display: none;
}

.lesson-audio.playing .audio-icon-pause {
  display: block;
}

.audio-meta {
  min-width: 0;
}

.audio-meta strong,
.audio-meta span {
  display: block;
}

.audio-meta strong {
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
}

.audio-meta span {
  margin-top: 3px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
}

.audio-controls {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  color: var(--ink);
  font-size: 13px;
}

.audio-controls [data-audio-current] {
  text-align: center;
}

.audio-range {
  --audio-progress: 0%;
  width: 100%;
  height: 18px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

.audio-range::-webkit-slider-runnable-track {
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--violet) 0 var(--audio-progress), rgba(255, 255, 255, 0.78) var(--audio-progress) 100%);
}

.audio-range::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  margin-top: -6px;
  appearance: none;
  border: 0;
  border-radius: 50%;
  background: var(--violet);
}

.audio-range::-moz-range-track {
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
}

.audio-range::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--violet);
}

.audio-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 0;
  border-radius: 50%;
  background: var(--violet);
}

.lesson-video {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  box-sizing: border-box;
  margin: 30px -32px;
  padding: 32px;
  border-radius: 20px;
  background: #f0f1fb;
}

.video-inner {
  display: grid;
  gap: 18px;
  max-width: 700px;
  margin: 0 auto;
}

.video-meta strong,
.video-meta span {
  display: block;
}

.video-meta strong {
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
}

.video-meta span {
  margin-top: 3px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
}

.video-player {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 12px;
  background: #17181d;
  object-fit: contain;
}

.video-fallback {
  display: grid;
  place-items: center;
  min-height: 240px;
  border-radius: 12px;
  background: #17181d;
}

.lesson-carousel {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin: 30px -32px;
}

.carousel-main {
  --carousel-pad: 32px;
  position: relative;
  display: grid;
  place-items: center;
  height: 500px;
  overflow: visible;
  border-radius: 20px;
  background: #f0f1fb;
}

.carousel-slide {
  display: flex;
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 0;
}

.carousel-slide[hidden] {
  display: none;
}

.carousel-image-frame {
  display: grid;
  place-items: center;
  width: calc(100% - var(--carousel-pad) - var(--carousel-pad));
  height: calc(100% - var(--carousel-pad) - var(--carousel-pad));
  min-width: 0;
  min-height: 0;
}

.carousel-image-frame img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  object-fit: contain;
}

.carousel-caption {
  max-width: 700px;
  margin: 12px auto 0;
  color: rgba(48, 51, 58, 0.5);
  font-size: 14px;
  line-height: 1.35;
  text-align: center;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  padding: 0;
  border-radius: 50%;
  background: rgba(32, 33, 36, 0.92);
  color: var(--white);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%);
  transition: opacity 160ms ease, background 160ms ease;
}

.carousel-arrow svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.carousel-arrow.prev {
  left: -26px;
}

.carousel-arrow.next {
  right: -26px;
}

.lesson-carousel:hover .carousel-arrow,
.carousel-arrow:focus-visible {
  opacity: 1;
  pointer-events: auto;
}

.carousel-arrow:hover {
  background: rgba(32, 33, 36, 1);
}

.carousel-thumbs {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
}

.carousel-thumb {
  display: grid;
  place-items: center;
  width: 128px;
  aspect-ratio: 16 / 9;
  padding: 4px;
  border: 2px solid transparent;
  border-radius: 10px;
  background: var(--soft);
  opacity: 0.72;
  transition: opacity 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.carousel-thumb:hover,
.carousel-thumb.active {
  border-color: var(--ink);
  opacity: 1;
}

.carousel-thumb.active {
  transform: translateY(-1px);
}

.carousel-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}

.lesson-markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 18px;
}

.lesson-markdown th,
.lesson-markdown td {
  border: 1px solid var(--line);
  padding: 12px;
  text-align: left;
}

.formula {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 8px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.callout {
  box-sizing: border-box;
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin: 22px -32px;
  padding: 24px 32px;
  border-radius: 20px;
  background: #e4e8eb;
  font-size: 18px;
  line-height: 1.6;
}

.callout.yellow {
  background: #f6ded4;
}

.callout.violet {
  background: var(--soft-violet);
}

.audio-card {
  display: grid;
  gap: 12px;
  padding: 26px;
  border-radius: 18px;
  background: var(--soft-violet);
}

.quiz-card {
  --quiz-state-line-offset: -33px;
  box-sizing: border-box;
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin: 30px -32px;
  border: 1px solid #c9ccd4;
  border-radius: 18px;
  padding: 32px;
  box-shadow: var(--shadow);
}

.quiz-card h3 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.24;
}

.quiz-card .prompt {
  font-size: 18px;
  line-height: 1.6;
  margin-bottom: 28px;
}

.quiz-question-image {
  margin: 8px 0 24px;
}

.quiz-question-image img {
  display: block;
  width: 100%;
  max-width: 700px;
  max-height: 420px;
  object-fit: contain;
  border-radius: 6px;
}

.quiz-question-image figcaption {
  margin-top: 10px;
  color: rgb(47 49 59 / 58%);
  font-size: 14px;
  line-height: 1.45;
}

.options {
  display: grid;
  gap: 12px;
}

.option {
  position: relative;
  display: grid;
  grid-template-columns: 24px 1fr;
  column-gap: 12px;
  row-gap: 8px;
  align-items: start;
  width: 100%;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  text-align: left;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 18px;
  line-height: 1.6;
}



.quiz-card .option:disabled {
  cursor: default;
}

.option-content {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.option.image-only {
  align-items: center;
}

.option.image-only .option-content {
  align-items: center;
}

.option-text {
  min-width: 0;
}

.option-image img {
  display: block;
  max-width: min(280px, 100%);
  max-height: 180px;
  object-fit: contain;
  border-radius: 6px;
}

.quiz-card .option.is-correct::before,
.quiz-card .option.is-wrong::before,
.quiz-card .option.is-missed::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--quiz-state-line-offset);
  width: 4px;
  border-radius: 0;
  background: var(--green);
  pointer-events: none;
}

.quiz-card .option.is-wrong::before {
  background: var(--red);
}

.choice {
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 16px;
  line-height: 1;
}

.choice.checkbox {
  border-radius: 6px;
}

.choice.is-picked,
.choice.checked {
  border-color: var(--violet);
  background: var(--violet);
  color: var(--white);
}

.choice.is-correct {
  border-color: var(--green);
  background: var(--green);
  color: var(--white);
}

.choice.is-wrong {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
}

.choice.is-missed {
  border-color: var(--green);
  background: #e7f7ef;
  color: var(--green);
}

.explanation {
  grid-column: 1 / -1;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.5;
  margin-top: 0;
}

.explanation.is-correct {
  color: var(--green);
}

.explanation.is-wrong {
  color: var(--red);
}

.explanation.is-neutral {
  color: var(--ink);
}

.text-answer {
  display: grid;
  gap: 16px;
}

.text-answer input {
  min-height: 56px;
  border: 0;
  border-radius: 14px;
  padding: 0 18px;
  box-shadow: 0 18px 50px rgba(28, 30, 40, 0.08);
  font-size: 18px;
}

.matching-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  position: relative;
}

.match-item,
.basket-item {
  min-height: 52px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  text-align: left;
}

.match-item.active {
  outline: 3px solid var(--violet);
}

.match-line {
  color: var(--green);
  font-size: 18px;
  margin-top: 8px;
}

.basket-zone {
  min-height: 130px;
  border: 2px dashed var(--line);
  border-radius: 16px;
  padding: 12px;
  background: #fbfbfd;
}

.basket-zone.drag-over {
  border-color: var(--violet);
  background: var(--soft-violet);
}

.admin-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 22px;
  align-items: start;
}

.list-stack {
  display: grid;
  gap: 10px;
}

.list-item {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  text-align: left;
}

.list-item.active {
  border-color: var(--violet);
  background: var(--soft-violet);
}

.block-editor {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  gap: 12px;
  scroll-margin-block: 120px;
}


.admin-page {
  max-width: 1380px;
  margin: 0 auto;
}

.admin-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.admin-heading p {
  margin: -12px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.admin-tiles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.admin-tiles.compact {
  grid-template-columns: repeat(2, minmax(260px, 1fr));
}

.admin-tile {
  min-height: 190px;
  display: grid;
  align-content: space-between;
  gap: 16px;
  padding: 28px;
  border-radius: 18px;
  background: var(--soft);
  text-align: left;
  color: var(--ink);
}

.admin-tile > span {
  font-size: 28px;
  font-weight: 560;
}

.admin-tile strong {
  font-size: 48px;
  line-height: 1;
}

.admin-tile small {
  color: var(--muted);
  font-size: 16px;
}

.admin-tile.muted {
  opacity: 0.72;
}

.admin-content-tile {
  grid-column: span 2;
}

.admin-tile > .admin-tile-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  font-size: inherit;
  font-weight: inherit;
}

.admin-tile-stat {
  display: grid;
  align-content: end;
  gap: 8px;
  min-width: 0;
}

.admin-tile-stat strong {
  line-height: 1;
}

.admin-tile-stat small {
  color: var(--muted);
  font-size: 16px;
}

.admin-table-wrap {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.admin-table th,
.admin-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.admin-table th {
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
}

.admin-table tbody tr[data-action] {
  cursor: pointer;
}

.admin-table tbody tr[data-action]:hover {
  background: #fafaff;
}

.admin-report-tile {
  background: linear-gradient(135deg, var(--soft), color-mix(in srgb, var(--accent) 10%, white));
}

.admin-overview-tiles .admin-tile {
  align-content: start;
  background: var(--white);
}

.admin-overview-tiles .admin-tile.muted {
  opacity: 1;
}

.report-summary-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.report-summary-card {
  display: grid;
  gap: 7px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface, #fff);
}

.report-summary-card span,
.report-summary-card small {
  color: var(--muted);
}

.report-summary-card strong {
  overflow-wrap: anywhere;
  font-size: 28px;
}

.report-toolbar {
  display: grid;
  grid-template-columns: minmax(180px, 1.1fr) minmax(220px, 1.8fr) minmax(150px, 1fr) repeat(2, minmax(145px, .85fr)) minmax(135px, .8fr);
  gap: 12px;
  align-items: end;
  margin-bottom: 18px;
  padding: 18px;
}

.report-toolbar .field {
  margin: 0;
}

.report-toolbar-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.report-table-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 4px;
}

.report-table-heading h2,
.report-table-heading p {
  margin: 0;
}

.report-table-heading p,
.report-table-heading small {
  color: var(--muted);
}

.report-table {
  min-width: 920px;
}

.report-table td {
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.report-cell-long {
  min-width: 260px;
}

.report-pagination {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
}

.report-pagination > :last-child {
  justify-self: end;
}

.btn.small {
  min-height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  font-size: 14px;
}

.field-actions,
.editor-media-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.editor-media-actions {
  margin: 0;
}

.content-tabs,
.media-kind-tabs,
.media-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.content-tabs {
  margin-bottom: 16px;
}

.admin-section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.admin-section-row .content-tabs {
  margin-bottom: 0;
}

.admin-section-row > .btn {
  min-height: 40px;
  padding: 0 15px;
  border-radius: 12px;
  font-weight: 700;
  line-height: 1.2;
}

.media-toolbar {
  flex-wrap: nowrap;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.media-toolbar .tabs {
  margin-bottom: 0;
}

.media-toolbar-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex: 0 0 auto;
  min-width: 450px;
}

.media-toolbar-meta .admin-search {
  width: 320px;
  max-width: 320px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 14px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.media-toolbar-meta .admin-search::placeholder {
  color: var(--muted);
}

.media-toolbar-meta .admin-search:focus {
  border-color: var(--violet);
  box-shadow: 0 0 0 3px rgb(99 91 255 / 12%);
}

.media-storage-tag {
  min-height: 36px;
  white-space: nowrap;
}

.media-kind-tabs {
  flex-wrap: wrap;
}

.media-kind-tabs .tab small {
  color: var(--muted);
}

.media-kind-tabs .tab.active small {
  color: currentColor;
}

.media-table .row-actions {
  width: 198px;
  white-space: nowrap;
}

.media-file-cell {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
}

.media-file-cell > div,
.media-picker-item > span {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.media-file-cell small,
.media-picker-item small {
  overflow: hidden;
  color: var(--muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.media-preview {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 6px;
  background: var(--soft);
  color: var(--violet);
  font-size: 10px;
  font-weight: 800;
}

.media-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-preview.audio { color: #157f62; }
.media-preview.video { color: #a34d27; }

.media-row-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.media-row-actions .icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: transparent;
}

.media-row-actions .icon-btn:hover {
  background: var(--soft);
}

.admin-dialog {
  width: min(620px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  padding: 24px;
  overflow: auto;
  border: 0;
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 22px 70px rgb(31 35 48 / 20%);
}

.admin-dialog::backdrop {
  background: rgb(31 35 48 / 38%);
}

.auth-code-dialog {
  width: min(460px, calc(100vw - 28px));
  max-height: calc(100vh - 28px);
  padding: 0;
  overflow: auto;
  border: 0;
  border-radius: 20px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 24px 80px rgb(31 35 48 / 24%);
}

.auth-code-dialog::backdrop {
  background: rgb(29 42 68 / 44%);
  backdrop-filter: blur(3px);
}

.auth-code-card {
  position: relative;
  padding: 34px;
  text-align: center;
}

.auth-code-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin: 0 auto 18px;
  border-radius: 18px;
  background: var(--soft-violet);
  color: var(--violet);
}

.auth-code-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.auth-code-card h2 {
  margin: 0;
  font-size: 26px;
}

.auth-code-card > p {
  margin: 10px 0 24px;
  color: var(--muted);
  line-height: 1.55;
}

.auth-code-form {
  text-align: left;
}

.auth-code-form input {
  min-height: 58px;
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.3em;
  font-variant-numeric: tabular-nums;
}

.auth-code-form input::placeholder {
  color: color-mix(in srgb, var(--muted) 45%, transparent);
}

.auth-code-error {
  margin: 10px 0 0;
  color: var(--red);
  font-size: 14px;
  text-align: center;
}

.auth-code-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 22px;
}

.auth-code-actions .btn {
  width: 100%;
}

.dialog-heading,
.dialog-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.dialog-heading h2,
.dialog-heading p {
  margin: 0;
}

.dialog-heading p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 15px;
}

.dialog-actions {
  justify-content: flex-end;
  align-items: center;
  margin-top: 8px;
}

.media-picker-dialog {
  width: min(820px, calc(100vw - 32px));
}

.media-picker-dialog .admin-search {
  width: 100%;
  max-width: none;
  margin: 18px 0;
}

.media-picker-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-height: min(540px, 55vh);
  overflow: auto;
}

.media-picker-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.media-picker-item:hover,
.media-picker-item:focus-visible {
  border-color: var(--violet);
  background: var(--soft);
  outline: none;
}

.media-usage-list {
  display: grid;
  gap: 8px;
  margin: 18px 0;
}

.media-usage-item {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
}

.media-usage-item small {
  color: var(--muted);
}

.media-version-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.media-version-item > div {
  display: grid;
  gap: 4px;
}

.media-version-item small {
  color: var(--muted);
}

.admin-controls {
  margin-bottom: 16px;
}

.admin-controls-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.admin-controls-row .admin-search {
  width: min(640px, 100%);
  max-width: 640px;
  margin: 0;
}

.admin-controls-row .admin-search input {
  min-height: 40px;
  border-radius: 12px;
}

.admin-controls-row > .btn {
  min-height: 40px;
  padding: 0 15px;
  border-radius: 12px;
  font-weight: 700;
  line-height: 1.2;
}

.admin-search {
  max-width: 520px;
}

.users-table {
  min-width: 1240px;
  table-layout: fixed;
}

.users-table .users-col-person { width: 25%; }
.users-table .users-col-role { width: 15%; }
.users-table .users-col-access { width: 14%; }
.users-table .users-col-lessons { width: 18%; }
.users-table .users-col-2fa { width: 10%; }
.users-table .users-col-active { width: 18%; }

.users-table td:first-child {
  overflow-wrap: anywhere;
}

.users-table td:nth-child(2),
.users-table td:nth-child(5) {
  white-space: nowrap;
}

.clickable-user-row {
  cursor: pointer;
  transition: background-color 160ms ease;
}

.clickable-user-row:hover {
  background: var(--soft);
}

.clickable-user-row:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

.user-account-type {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.3;
}

.questionnaire-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 24px;
  margin: 0;
}

.questionnaire-details > div {
  min-width: 0;
}

.questionnaire-details dt {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.questionnaire-details dd {
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.questionnaire-details dd.questionnaire-empty {
  color: var(--muted);
}

.user-progress-summary {
  display: grid;
  gap: 6px;
  align-items: start;
}

.user-danger-zone {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-color: #f0c6c2;
}

.user-danger-zone h2 {
  margin-bottom: 8px;
}

.user-danger-zone .field-hint {
  margin: 0;
  max-width: 720px;
}

.user-danger-zone .btn.danger {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.user-danger-zone .btn.danger svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.danger-zone-note {
  margin: 0;
  max-width: 360px;
  color: var(--muted);
  text-align: right;
}

.link-btn {
  justify-self: start;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--violet);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.link-btn:hover {
  text-decoration: underline;
}

.link-btn.danger-link {
  color: #b3261e;
}

.user-progress-row > td {
  padding: 0 12px 18px;
  background: #fbfbff;
}

.user-create-dialog {
  width: min(680px, calc(100vw - 32px));
}

.user-admin-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  margin-top: 20px;
}

.user-admin-form > .field {
  align-content: start;
}

.access-form-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.user-detail-section {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.user-detail-section:last-child {
  border-bottom: 0;
}

.user-detail-section h3,
.user-detail-section h4,
.user-detail-section p {
  margin-top: 0;
}

.user-detail-section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.user-detail-page-heading {
  align-items: flex-end;
}

.admin-back-link,
.admin-back-spacer {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  color: var(--violet);
  font-weight: 700;
  line-height: 1.25;
}

.admin-back-spacer {
  visibility: hidden;
  pointer-events: none;
  user-select: none;
}

.admin-back-link,
.admin-back-link:hover {
  text-decoration: none;
}

.user-detail-page-heading h1 {
  margin-bottom: 12px;
}

.user-detail-page-heading p {
  margin: 0;
}

.user-detail-facts {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.user-detail-facts span {
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--soft);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.user-detail-tabs {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.user-detail-tabs .tab {
  margin-bottom: -1px;
  border-radius: 8px 8px 0 0;
}

.user-detail-page-section {
  display: grid;
  gap: 24px;
  padding: 28px;
}

.user-detail-page-section h2,
.user-detail-page-section h4,
.user-detail-page-section p {
  margin-top: 0;
}

.user-security-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.user-security-summary > div {
  display: grid;
  gap: 6px;
  padding: 16px;
  border-radius: 8px;
  background: var(--soft);
}

.user-security-summary span,
.admin-session-row span {
  color: var(--muted);
  font-size: 13px;
}

.admin-session-list {
  display: grid;
}

.admin-session-row {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(180px, auto) minmax(180px, auto);
  gap: 24px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.admin-session-row:last-child {
  border-bottom: 0;
}

.admin-session-row > div {
  display: grid;
  gap: 4px;
}

.admin-session-row small {
  color: var(--muted);
}

.user-audit-history {
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.user-audit-history time {
  color: var(--muted);
  white-space: nowrap;
}

.access-form-intro,
.access-source-note {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--soft);
}

.access-form-intro small,
.access-source-note p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.access-source-note {
  margin: 16px 0 4px;
}

.access-source-note.subscription {
  background: var(--soft-violet);
}

.access-history {
  display: grid;
  gap: 8px;
  margin-top: 22px;
}

.access-history-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.access-history-row div {
  display: grid;
  gap: 4px;
}

.access-history-row small {
  color: var(--muted);
}

.nested-table {
  margin: 12px 0 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
}

.nested-table th,
.nested-table td {
  padding: 12px 14px;
}

.progress-cell {
  display: grid;
  grid-template-columns: 42px minmax(120px, 1fr);
  gap: 6px 10px;
  align-items: center;
  min-width: 190px;
}

.progress-cell small {
  grid-column: 2;
  color: var(--muted);
}

.progress-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #eceef7;
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--violet);
}

.empty-state.compact {
  padding: 16px 0;
  color: var(--muted);
}

.lesson-builder {
  display: grid;
  gap: 18px;
}

.builder-toolbar {
  position: sticky;
  top: 84px;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.builder-toolbar-left,
.builder-toolbar-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.builder-toolbar-right {
  justify-content: flex-end;
}

.builder-save-status {
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.35;
  white-space: nowrap;
}

.add-menu {
  position: relative;
  z-index: 30;
}

.add-menu summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
}

.add-menu summary::-webkit-details-marker {
  display: none;
}

.add-menu > div {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  z-index: 40;
  box-sizing: border-box;
  min-width: 190px;
  max-width: min(280px, calc(100vw - 32px));
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateX(-50%);
}

.add-menu.open-up > div {
  top: auto;
  bottom: calc(100% + 8px);
}


.builder-add-bottom {
  display: flex;
  justify-content: center;
  margin-top: 2px;
}


.block-editor.dragging {
  opacity: 0.55;
}

.block-editor.drag-over {
  outline: 2px solid var(--violet);
  outline-offset: 4px;
}

.drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-right: 8px;
  border-radius: 8px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-weight: 800;
  cursor: grab;
  user-select: none;
}

.drag-handle:active {
  cursor: grabbing;
}

.builder-blocks {
  display: grid;
  gap: 18px;
}

.block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.markdown-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.markdown-toolbar code {
  padding: 5px 8px;
  border-radius: 8px;
  background: var(--soft);
  color: var(--violet-dark);
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  align-items: start;
  gap: 18px;
}

.markdown-source-field {
  min-width: 0;
}

.markdown-code-editor {
  position: relative;
  min-height: 460px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  overflow: hidden;
}

.markdown-code-editor:focus-within {
  border-color: rgba(98, 98, 241, 0.62);
  box-shadow: 0 0 0 3px rgba(98, 98, 241, 0.1);
}

.markdown-code-editor pre,
.markdown-code-editor textarea[data-markdown-source] {
  box-sizing: border-box;
  width: 100%;
  height: 460px;
  min-height: 460px !important;
  margin: 0;
  border: 0;
  border-radius: 0;
  padding: 14px;
  overflow: auto;
  background: transparent;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0;
  tab-size: 2;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.markdown-code-editor pre {
  pointer-events: none;
  color: var(--ink);
}

.markdown-code-editor textarea[data-markdown-source] {
  position: absolute;
  inset: 0;
  resize: none;
  caret-color: var(--ink);
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.markdown-code-editor textarea[data-markdown-source]::selection {
  background: rgba(98, 98, 241, 0.22);
}

.md-syntax {
  font-weight: 800;
}

.md-heading { color: #5c5cf1; }
.md-block { color: #7b61d8; }
.md-list { color: #168b63; }
.md-emphasis { color: #cc5a13; }
.md-mark { color: #d39b00; }
.md-math { color: #0b7f73; }
.md-script { color: #7b61d8; }
.md-link { color: #1f75cc; }
.md-table { color: #9a6500; }
.md-code { color: #a23b72; }
.md-entity { color: #8a5a9e; }
.md-break { color: #d04747; }
.md-color { color: #0b7f73; }


.editor-grid.editor-grid-single {
  grid-template-columns: minmax(0, 1fr);
}

.lesson-subtitle {
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 24px;
  line-height: 1.35;
}

.preview-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 16px;
  padding: 10px;
}

.segmented {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--soft);
}

.segment {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.segment.active {
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(28, 30, 40, 0.08);
}

.preview-stage {
  display: flex;
  justify-content: center;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #eef0f7;
  overflow: auto;
}

.preview-device {
  width: min(100%, 1180px);
  min-height: 720px;
  border: 1px solid rgba(42, 45, 54, 0.12);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 0 24px 70px rgba(28, 30, 40, 0.16);
  overflow: auto;
}

.preview-tablet .preview-device {
  width: 820px;
  min-height: 980px;
}

.preview-mobile .preview-device {
  width: 390px;
  min-height: 760px;
  border-radius: 28px;
}

.preview-reader {
  padding: 72px 0;
}

.preview-tablet .preview-reader {
  padding: 56px 0;
}

.preview-mobile .preview-reader {
  width: min(100% - 40px, 700px);
  padding: 42px 0;
}

.preview-mobile .lesson-reader h1 {
  font-size: 34px;
}

.preview-mobile .lesson-subtitle {
  font-size: 20px;
}

.preview-mobile .lesson-markdown img,
.preview-mobile .lesson-markdown .markdown-figure,
.preview-mobile .lesson-markdown blockquote,
.preview-mobile .markdown-callout,
.preview-mobile .callout,
.preview-mobile .lesson-carousel,
.preview-mobile .lesson-audio,
.preview-mobile .lesson-video,
.preview-mobile .quiz-card {
  width: 100%;
  max-width: 100%;
  margin-left: 0;
  margin-right: 0;
}

.preview-mobile .carousel-arrow.prev {
  left: 10px;
}

.preview-mobile .carousel-arrow.next {
  right: 10px;
}

.preview-mobile .carousel-thumb {
  width: 88px;
}

.preview-mobile .carousel-main {
  --carousel-pad: clamp(14px, 4.188cqw, 32px);
  container-type: inline-size;
  height: auto;
  aspect-ratio: 764 / 500;
  min-height: 0;
  box-sizing: border-box;
}

.preview-mobile .carousel-image-frame img {
  max-width: calc(100cqw - var(--carousel-pad) - var(--carousel-pad));
  max-height: calc(65.445cqw - var(--carousel-pad) - var(--carousel-pad));
}


.preview-transition .btn:disabled {
  opacity: 0.78;
  cursor: default;
}

.markdown-preview {
  display: grid;
  gap: 8px;
}

.markdown-preview label {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.markdown-preview > div {
  height: 460px;
  min-height: 460px;
  max-height: 460px;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfbfd;
}

.lesson-markdown blockquote,
.markdown-preview blockquote,
.markdown-callout {
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  box-sizing: border-box;
  margin: 22px -32px;
  padding: 24px 32px;
  border: 0;
  border-radius: 20px;
  background: #e4e8eb;
  color: var(--ink);
}

.markdown-callout > :last-child {
  margin-bottom: 0;
}

.transition-editor {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.transition-editor-title {
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.quiz-editor {
  background: #fbfbff;
}

.button-editor {
  background: #fbfbff;
}

.audio-editor {
  background: #fbfbff;
}

.video-editor {
  background: #fbfbff;
}

.carousel-editor {
  background: #fbfbff;
}

.audio-editor-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1.2fr) minmax(180px, 0.8fr) minmax(220px, 1fr);
  gap: 12px;
  align-items: end;
}

.video-editor-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1.2fr) minmax(180px, 0.8fr) minmax(220px, 1fr);
  gap: 12px;
  align-items: end;
}

.quiz-image-editor {
  display: grid;
  grid-template-columns: minmax(240px, 1.2fr) minmax(180px, 0.8fr) minmax(220px, 1fr);
  gap: 12px;
  align-items: end;
}

.carousel-slide-row {
  display: grid;
  grid-template-columns: minmax(220px, 1.2fr) minmax(180px, 0.9fr) minmax(220px, 1fr) auto;
  gap: 12px;
  align-items: end;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
}

.media-picker-item[hidden] {
  display: none !important;
}

.quiz-option-row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
}

.quiz-option-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.quiz-option-fields .field-wide {
  grid-column: 1 / -1;
}

.option.compact {
  display: flex;
  align-items: center;
  gap: 8px;
  width: auto;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 14px;
}

.btn.danger {
  color: #b3261e;
  background: #ffe8e6;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 40px;
  padding: 0 15px;
  border-radius: 12px;
  background: var(--soft);
  color: var(--muted);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
}

.tab.active {
  background: var(--violet);
  color: var(--white);
}

.empty {
  padding: 32px;
  border-radius: 18px;
  background: var(--soft);
  color: var(--muted);
}

.notice {
  margin: 16px 0;
  padding: 16px;
  border-radius: 14px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-weight: 650;
}

.error {
  margin: 16px 0;
  padding: 16px;
  border-radius: 14px;
  background: #ffe8e6;
  color: #b3261e;
  font-weight: 650;
}

.action-feedback-wrap {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  max-width: 100%;
  vertical-align: top;
}

.action-feedback-slot {
  display: block;
  box-sizing: border-box;
  width: min(320px, 70vw);
  max-width: 100%;
  height: 2.7em;
  overflow: auto;
  color: var(--violet-dark);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.action-feedback-slot.is-error,
.action-feedback-fallback.is-error {
  color: #b3261e;
}

.quiz-feedback-slot {
  min-height: 1.35em;
  margin: 8px 0;
  color: var(--violet-dark);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
}

.action-feedback-fallback {
  margin: 8px 0 0;
  color: var(--violet-dark);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.profile-section-heading {
  flex-wrap: wrap;
}

.admin-controls-row > .action-feedback-wrap > .btn {
  min-height: 40px;
  padding: 0 15px;
  border-radius: 12px;
  font-weight: 700;
  line-height: 1.2;
}

.feedback-trigger {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 12;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--violet);
  color: var(--white);
  box-shadow: 0 14px 34px rgb(55 53 180 / 28%);
  font-weight: 750;
}

.feedback-trigger:hover {
  background: var(--violet-dark);
}

.feedback-trigger svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feedback-trigger svg circle {
  fill: currentColor;
  stroke: none;
}

.feedback-dialog {
  width: min(620px, calc(100vw - 28px));
  max-height: calc(100vh - 32px);
  padding: 0;
  overflow: auto;
  border: 0;
  border-radius: 20px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 24px 80px rgb(31 35 48 / 25%);
}

.feedback-dialog::backdrop {
  background: rgb(31 35 48 / 44%);
  backdrop-filter: blur(2px);
}

.feedback-dialog-card {
  position: relative;
  padding: 28px;
}

.dialog-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--muted);
  font-size: 25px;
  line-height: 1;
}

.feedback-heading {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-right: 34px;
}

.feedback-heading h2,
.feedback-heading p,
.feedback-success h2,
.feedback-success p {
  margin: 0;
}

.feedback-heading p,
.feedback-success p {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.45;
}

.feedback-heading-icon {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--soft-violet);
  color: var(--violet);
  font-size: 21px;
  font-weight: 850;
}

.feedback-identity {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 22px 0;
  padding: 16px;
  border-radius: 14px;
  background: var(--soft);
}

.feedback-identity div {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.feedback-identity span,
.feedback-identity a {
  color: var(--muted);
  font-size: 13px;
}

.feedback-identity strong {
  overflow: hidden;
  text-overflow: ellipsis;
}

.feedback-identity a {
  grid-column: 1 / -1;
  color: var(--violet);
}

.feedback-form {
  display: grid;
  gap: 16px;
}

.feedback-file {
  display: grid;
  gap: 4px;
  padding: 15px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  color: var(--violet);
  cursor: pointer;
}

.feedback-file input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.feedback-file small,
.feedback-context-note {
  color: var(--muted);
  font-size: 13px;
}

.feedback-file-selected {
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--soft-violet);
  color: var(--violet-dark);
  font-size: 14px;
  overflow-wrap: anywhere;
}

.feedback-context-note {
  margin: 0;
}

.feedback-form-error {
  padding: 11px 13px;
  border-radius: 10px;
  background: #ffe8e6;
  color: #b3261e;
  font-size: 14px;
  font-weight: 650;
}

.feedback-success {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 36px 12px 16px;
  text-align: center;
}

.feedback-success > span {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #e3f8ef;
  color: var(--green);
  font-size: 28px;
  font-weight: 850;
}

.feedback-success .btn {
  margin-top: 8px;
}

.feedback-tabs {
  margin-bottom: 18px;
  overflow-x: auto;
}

.feedback-tabs .tab {
  flex: 0 0 auto;
}

.feedback-table tbody tr[data-feedback-href] {
  cursor: pointer;
}

.feedback-table tbody tr[data-feedback-href]:hover,
.feedback-table tbody tr[data-feedback-href]:focus {
  background: #fafaff;
  outline: none;
}

.feedback-message-preview {
  display: -webkit-box;
  max-width: 420px;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-height: 1.4;
}

.feedback-problem-tag,
.feedback-status-new {
  background: #ffe8e6;
  color: #b3261e;
}

.feedback-status-in_progress {
  background: #fff6d8;
  color: #876500;
}

.feedback-status-closed {
  background: #e3f8ef;
  color: #087451;
}

.feedback-detail-heading {
  align-items: center;
}

.feedback-admin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  align-items: start;
}

.feedback-admin-main {
  display: grid;
  gap: 20px;
}

.feedback-request-card,
.feedback-reply-card,
.feedback-response-history,
.feedback-admin-sidebar {
  padding: 24px;
}

.feedback-request-author {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.feedback-request-author div,
.feedback-response-history article > div {
  display: grid;
  gap: 3px;
}

.feedback-request-author small,
.feedback-request-author > span,
.feedback-response-history small {
  color: var(--muted);
  font-size: 13px;
}

.feedback-request-message {
  padding: 22px 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 18px;
  line-height: 1.55;
}

.feedback-attachment-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border-radius: 12px;
  background: var(--soft);
}

.feedback-attachment-card > span {
  font-size: 24px;
}

.feedback-attachment-card div {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.feedback-attachment-card strong {
  overflow: hidden;
  text-overflow: ellipsis;
}

.feedback-attachment-card small {
  color: var(--muted);
}

.feedback-context-list {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.feedback-context-list div {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 10px;
}

.feedback-context-list dt {
  color: var(--muted);
}

.feedback-context-list dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.feedback-reply-card h2,
.feedback-response-history h2,
.feedback-admin-sidebar h2 {
  margin: 0 0 8px;
}

.feedback-reply-card > p {
  margin: 0 0 18px;
  color: var(--muted);
}

.feedback-reply-card form,
.feedback-admin-sidebar form {
  display: grid;
  gap: 16px;
}

.feedback-close-option {
  display: flex;
  align-items: center;
  gap: 10px;
}

.feedback-close-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--violet);
}

.feedback-response-history {
  display: grid;
  gap: 16px;
}

.feedback-response-history article {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.feedback-response-history article p {
  margin: 12px 0 0;
  white-space: pre-wrap;
  line-height: 1.5;
}

.feedback-admin-sidebar {
  position: sticky;
  top: 94px;
}

.feedback-timestamps {
  display: grid;
  gap: 10px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.feedback-timestamps span {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.feedback-timestamps strong {
  color: var(--ink);
  text-align: right;
}

.admin-service-links {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

.admin-service-links a {
  color: var(--violet-dark);
  font-weight: 700;
}

.settings-list {
  padding: 0;
  overflow: hidden;
}

.settings-list > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.settings-list > a:last-child {
  border-bottom: 0;
}

.settings-list > a:hover {
  background: var(--soft);
}

.settings-list span:first-child,
.legal-admin-table td:first-child {
  display: grid;
  gap: 5px;
}

.legal-admin-table tbody tr[data-legal-href] {
  cursor: pointer;
}

.legal-admin-table tbody tr[data-legal-href]:hover,
.legal-admin-table tbody tr[data-legal-href]:focus {
  background: #fafaff;
  outline: none;
}

.settings-list small,
.legal-admin-table small,
.legal-history small {
  color: var(--muted);
}

.legal-editor-form {
  display: grid;
  gap: 18px;
}

.legal-editor-meta {
  padding: 22px;
}

.legal-editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.legal-code-editor,
.legal-code-editor textarea,
.legal-code-editor pre {
  min-height: 640px;
}

.legal-preview {
  min-height: 690px;
  padding: 28px;
}

.legal-preview-title {
  padding-bottom: 14px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.legal-history {
  margin-top: 22px;
}

.legal-history > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
}

.legal-history > a span {
  display: grid;
  gap: 4px;
}

.integration-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.integration-card {
  padding: 24px;
}

.integration-card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.integration-card h2,
.integration-card p {
  margin: 0;
}

.integration-card p {
  margin-top: 5px;
  color: var(--muted);
}

.integration-card dl {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
}

.integration-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.integration-card dt,
.integration-card li {
  color: var(--muted);
}

.integration-card dd {
  margin: 0;
  text-align: right;
}

.tag.success {
  background: #dff4e8;
  color: #1f6a42;
}

.subscription-offer-dialog .dialog-card {
  position: relative;
}

.subscription-prompt-dialog .dialog-card {
  position: relative;
  padding-right: 28px;
}

.subscription-prompt-dialog h2 {
  margin: 0 36px 18px 0;
}

.subscription-prompt-dialog [data-subscription-prompt-material] {
  font-weight: 700;
}

.subscription-prompt-dialog .btn.primary {
  margin-top: 8px;
}

.legal-acceptance-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.45;
}

.legal-acceptance-option input {
  margin-top: 4px;
}

.legal-page {
  min-height: calc(100vh - 74px);
  padding: 54px 22px 80px;
  background: #f7f7fa;
}

.legal-document {
  width: min(100%, 820px);
  margin: 0 auto;
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 18px 50px rgb(31 35 48 / 8%);
}

.legal-document-heading {
  padding-bottom: 28px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.legal-document-heading h1 {
  margin: 6px 0 12px;
  font-size: clamp(32px, 5vw, 48px);
}

.legal-document-heading p,
.legal-document-meta,
.legal-kicker {
  color: var(--muted);
}

.legal-kicker {
  margin: 0;
  font-size: 13px;
  font-weight: 760;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.legal-document-body {
  font-size: 17px;
  line-height: 1.7;
}

.legal-document-meta {
  padding-top: 26px;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.legal-document-meta code {
  overflow-wrap: anywhere;
}

.legal-archive {
  margin-top: 42px;
}

.legal-version-list {
  display: grid;
}

.legal-version-list a {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.legal-version-list a[aria-current="page"] {
  font-weight: 760;
}

.legal-empty {
  text-align: center;
}

@media (max-width: 980px) {
  .report-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .report-toolbar {
    grid-template-columns: 1fr 1fr;
  }

  .report-search-field,
  .report-toolbar-actions {
    grid-column: 1 / -1;
  }

  .legal-editor-grid,
  .integration-list {
    grid-template-columns: 1fr;
  }

  .integration-card-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .legal-code-editor,
  .legal-code-editor textarea,
  .legal-code-editor pre {
    min-height: 420px;
  }
  .feedback-admin-grid {
    grid-template-columns: 1fr;
  }

  .feedback-admin-sidebar {
    position: static;
  }
  .user-danger-zone {
    align-items: stretch;
    flex-direction: column;
    gap: 20px;
  }

  .user-danger-zone .btn.danger {
    align-self: flex-start;
  }

  .danger-zone-note {
    max-width: none;
    text-align: left;
  }

  .admin-content-tile {
    grid-column: auto;
  }

  .admin-tile > .admin-tile-summary {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .admin-tile-stat {
    grid-template-columns: minmax(76px, auto) 1fr;
    align-items: baseline;
  }

  .profile-data-list {
    grid-template-columns: 1fr;
  }
  .account-type-picker {
    grid-template-columns: 1fr;
  }

  .account-type-picker label > span {
    min-height: 0;
  }

  .questionnaire-details {
    grid-template-columns: 1fr;
  }
  .media-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .media-toolbar .admin-search {
    width: 100%;
    max-width: none;
  }

  .media-toolbar-meta {
    justify-content: flex-start;
    flex-wrap: wrap;
    width: 100%;
    min-width: 0;
  }

  .media-picker-grid {
    grid-template-columns: 1fr;
  }

  .admin-dialog {
    padding: 18px;
  }
  .topbar {
    height: auto;
    padding: 14px;
    border-radius: 0 0 20px 20px;
    flex-wrap: wrap;
  }

  .account-popover {
    position: fixed;
    top: 70px;
    right: 14px;
    width: min(280px, calc(100vw - 28px));
  }

  .profile-form {
    grid-template-columns: 1fr;
  }

  .user-admin-form {
    grid-template-columns: 1fr;
  }

  .user-detail-page-heading {
    align-items: flex-start;
  }

  .user-detail-facts {
    justify-content: flex-start;
  }

  .user-detail-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
  }

  .user-detail-tabs .tab {
    flex: 0 0 auto;
  }

  .user-detail-page-section {
    padding: 18px;
    overflow-x: auto;
  }

  .questionnaire-details,
  .user-security-summary,
  .admin-session-row {
    grid-template-columns: 1fr;
  }

  .lessons-page {
    padding-right: 20px;
    padding-left: 20px;
  }

  .lesson-view-tabs {
    gap: 20px;
    overflow-x: auto;
  }

  .lesson-view-tabs a,
  .lesson-view-tabs button {
    flex: 0 0 auto;
  }

  .security-toggle-row,
  .sessions-heading,
  .session-row {
    align-items: flex-start;
  }

  .session-row {
    padding: 14px 0;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    gap: 18px;
    font-size: 16px;
  }

  .hero,
  .training,
  .author,
  .pricing,
  .workspace,
  .auth-layout,
  .admin-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 58px 22px;
    gap: 34px;
  }

  .hero p,
  .center-title p,
  .training p,
  .info-card p,
  .price-card ul,
  .lesson-markdown,
  .quiz-card .prompt,
  .option {
    font-size: 18px;
  }

  .lesson-reader {
    width: min(100%, 680px);
  }

  .lesson-markdown img,
  .lesson-markdown .markdown-figure,
  .lesson-carousel,
  .lesson-audio,
  .lesson-video,
  .lesson-markdown blockquote,
  .markdown-preview blockquote,
  .markdown-callout,
  .callout {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .lesson-markdown .markdown-figure img {
    width: 100%;
    max-width: 100%;
  }

  .carousel-main {
    --carousel-pad: clamp(14px, 4.188cqw, 32px);
    container-type: inline-size;
    height: auto;
    aspect-ratio: 764 / 500;
    min-height: 0;
    box-sizing: border-box;
  }

  .carousel-image-frame img {
    max-width: calc(100cqw - var(--carousel-pad) - var(--carousel-pad));
    max-height: calc(65.445cqw - var(--carousel-pad) - var(--carousel-pad));
  }


  .carousel-arrow {
    width: 44px;
    height: 44px;
  }

  .carousel-arrow svg {
    width: 22px;
    height: 22px;
  }

  .carousel-arrow.prev {
    left: 8px;
  }

  .carousel-arrow.next {
    right: 8px;
  }

  .carousel-thumbs {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .carousel-thumb {
    width: 104px;
    flex: 0 0 auto;
  }

  .quiz-card {
    --quiz-state-line-offset: -25px;
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    padding: 28px 24px;
  }

  .editor-grid,
  .quiz-option-row,
  .quiz-option-fields,
  .quiz-image-editor,
  .carousel-slide-row,
  .audio-editor-grid,
  .video-editor-grid {
    grid-template-columns: 1fr;
  }

  .option-image img {
    max-width: 100%;
  }

  .builder-toolbar {
    position: static;
    flex-wrap: wrap;
  }

  .admin-section-row,
  .admin-controls-row {
    align-items: stretch;
    flex-direction: column;
  }

  .admin-section-row .btn,
  .admin-controls-row .btn {
    align-self: flex-start;
  }

  .admin-controls-row .admin-search {
    width: 100%;
    max-width: none;
  }

  .hero-media {
    min-height: 360px;
  }

  .cards-3,
  .cards-2,
  .mosaic {
    grid-template-columns: 1fr;
  }

  .exercise-reader {
    width: 100%;
  }

  .exercise-reader .lesson-audio,
  .exercise-feedback {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .exercise-intro {
    margin-top: 20px;
    padding: 24px;
  }

  .exercise-choice-grid,
  .exercise-analysis-grid,
  .exercise-markdown-editor-grid,
  .exercise-pair-grid,
  .exercise-bank-upload-grid {
    grid-template-columns: 1fr;
  }

  .exercise-score {
    align-items: flex-start;
    flex-direction: column;
  }

  .exercise-score strong {
    font-size: 46px;
  }

  .section {
    padding: 54px 22px;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .content {
    padding: 28px 18px 60px;
  }

  .footer {
    grid-template-columns: 1fr;
    padding: 42px 24px;
  }
}

/* Interval exercises share the session shell with seventh chords. */
.interval-settings { margin: 24px 0; padding: 18px; border: 1px solid var(--line, #ddd); border-radius: 16px; }
.interval-student-settings { display: grid; gap: 16px; margin: 24px 0; }
.interval-student-settings h2 { margin: 0 0 4px; }
.interval-student-settings .sequence-param { margin: 0; }
.interval-student-settings .interval-checks { width: 100%; }
.interval-student-intro > .btn.primary { width: 100%; }
.interval-settings summary, .interval-segments summary { cursor: pointer; font-weight: 600; }
.interval-settings-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 16px; margin: 18px 0; }
.interval-settings fieldset { border: 1px solid var(--line,#ddd); border-radius: 12px; margin: 16px 0; padding: 14px; }
.interval-checks { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.interval-checks label, .interval-pattern-list label { display: flex; align-items: center; gap: 8px; }
.interval-checks input, .interval-pattern-list input { width: auto; }
.interval-pattern-list { display: grid; gap: 12px; margin-top: 16px; }
.interval-matrix td { min-width: 160px; vertical-align: top; }
.interval-cell { padding: 10px; display: grid; gap: 8px; }
.interval-cell + .interval-cell { border-top: 1px solid var(--line,#ddd); }
.interval-cell select, .interval-degree select { width: 100%; min-width: 72px; }
.interval-degree { display: grid; gap: 6px; }
.interval-degree > span, .interval-given small { font-size: 13px; color: var(--muted); }
.interval-given { display: grid; gap: 6px; padding: 4px; }
.interval-given > span { font-size: 11px; color: var(--muted); }
.interval-given strong { font-size: 20px; }
.interval-palette { display: flex; flex-wrap: wrap; gap: 8px; padding: 18px 0 8px; }
.interval-palette .btn { min-width: 46px; touch-action: manipulation; }
.interval-palette [draggable=true] { cursor: grab; }
.is-degree-active { outline: 3px solid var(--accent, #957e64); outline-offset: 2px; }
.interval-answer-pair { display: flex; justify-content: center; align-items: center; gap: 18px; margin: 20px 0; }
.interval-fraction { display: grid; gap: 8px; min-width: 150px; }
.interval-fraction > * + * { border-top: 2px solid currentColor; padding-top: 10px; }
.interval-fraction .field { margin: 0; }
.interval-arrow { font-size: 30px; }
.interval-resolution-fields { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 20px; }
.interval-positions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin: 26px 0; }
.interval-positions label { cursor: pointer; }
.interval-positions input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.interval-positions span { display: grid; place-items: center; width: 60px; height: 60px; border: 1px solid var(--line,#ccc); border-radius: 12px; font-size: 24px; }
.interval-positions input:checked + span { background: var(--ink,#333); color: var(--paper,#fff); }
.interval-positions input:focus-visible + span { outline: 3px solid var(--accent,#957e64); }
.interval-dictation { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 16px; }
.interval-dictation .panel { padding: 18px; }
.interval-dictation .interval-fraction { min-width: 100px; }
.interval-segments { margin: 20px 0; }
.interval-segments .lesson-audio { box-sizing: border-box; width: 100%; max-width: 100%; margin: 12px 0; padding: 20px; }
.interval-segments label { display: inline-grid; gap: 8px; margin: 12px; }
.interval-note-slots, .interval-note-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.interval-note-slots .btn { font-size: 13px; }
[data-interval-staff] { margin: 10px 0; background: #fffdfa; color: #282321; border-radius: 12px; }
[data-note-canvas] { display: block; width: 100%; max-height: 340px; cursor: crosshair; touch-action: manipulation; }
[data-note-canvas] line { stroke: currentColor; stroke-width: 1.4; }
[data-note-canvas] text { fill: currentColor; font-family: Georgia, 'Times New Roman', serif; }
[data-note-canvas] ellipse { fill: currentColor; }
[data-note-canvas] .is-selected { color: #b25536; }
.interval-note-degrees { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin: 22px 0; }
.interval-component-results { display: grid; gap: 6px; padding-left: 20px; }
.interval-component-results .wrong { color: #9e3829; }
.interval-component-results .good { color: #32604c; }
.interval-skill-results { max-width: 600px; margin: 16px 0; }
.admin-exercise-collections { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 16px; margin-bottom: 24px; }
@media(max-width:600px) {
  .interval-note-degrees { grid-template-columns: repeat(2,1fr); }
  .interval-fraction { min-width: 110px; }
  .interval-answer-pair { gap: 10px; }
  .interval-settings { padding: 12px; }
  .interval-matrix td { min-width: 140px; }
  .interval-reader .exercise-announcement { font-size: 18px; }
}
.interval-degree select, [data-interval-answer] select { min-height: 44px; border: 1px solid var(--line,#ccc); border-radius: 10px; padding: 8px 12px; background: var(--surface,#fff); color: var(--ink,#242424); font: inherit; }
.interval-score-editor [data-interval-staff] { overflow-x: auto; }
.interval-score-editor [data-note-canvas] { min-width: 600px; }
[data-note-canvas][role=img] { cursor: default; }

/* Shared symbol entry for interval exercises. */
@font-face { font-family: 'Bravura'; src: url('/fonts/Bravura.otf') format('opentype'); font-weight: 400; font-display: block; }
.interval-drop, .interval-fixed { display: inline-flex; justify-content: center; align-items: center; min-height: 44px; min-width: 72px; padding: 6px 12px; font-family: 'Lato',sans-serif; font-size: 23px; font-weight: 500; line-height: 1.25; }
.interval-drop { background: transparent; border: 1px solid transparent; border-radius: 6px; color: inherit; cursor: pointer; }
.exercise-matrix td .interval-drop { width: auto; height: auto; min-width: 72px; border-radius: 6px; font-size: 23px; font-weight: 500; }
.interval-drop:hover, .exercise-matrix td .interval-drop:hover { background: rgba(80,80,150,.04); }
.interval-drop.is-answer-active, .exercise-matrix td .interval-drop.is-answer-active { background: rgba(80,80,150,.06); border-color: rgba(80,80,150,.22); box-shadow: none; outline: none; }
.interval-drop:focus-visible { outline: 1px solid rgba(80,80,150,.4); outline-offset: 2px; }
.interval-cell { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 3px; }
.interval-cell small { flex-basis: 100%; }
.interval-cell-separator { font-weight: 400; color: var(--muted); }
.interval-token-group { display: flex; flex-wrap: wrap; gap: 6px; padding-right: 12px; }
.interval-palette { justify-content: center; gap: 12px; }
.interval-palette .btn { font-family: 'Lato',sans-serif; font-size: 19px; font-weight: 500; min-width: 44px; padding: 9px 12px; }
.interval-chain-answers { display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; margin: 24px 0; }
.interval-chain-answers section { min-width: 96px; text-align: center; }
.interval-sequence-item-actions { display: flex; justify-content: center; gap: 4px; margin-top: 8px; }
.interval-sequence-item-actions .btn { min-width: 28px; min-height: 28px; padding: 2px 5px; font-size: 15px; }
.interval-position-number { color: var(--muted); font-size: 13px; }
.interval-fraction { min-width: 90px; gap: 0; }
.interval-fraction > * + * { border-top: 1px solid currentColor; padding-top: 6px; border-radius: 0; }
[data-interval-staff] { background: #fffdfa; }
[data-note-canvas] { width: 100%; max-height: none; display: block; color: #191919; }
.interval-score-editor [data-note-canvas] { min-width: 650px; }
[data-note-canvas] .music-glyph { font-family: 'Bravura'; font-size: 80px; font-weight: 400; fill: currentColor; }
[data-note-canvas] .score-label text { font-family: 'Lato',sans-serif; font-size: 25px; font-weight: 500; fill: currentColor; }
[data-note-canvas] .score-label rect { fill: #fffdfa; stroke: transparent; }
[data-note-canvas] .score-drop { cursor: pointer; }
[data-note-canvas] .score-drop:hover rect { stroke: #d6d5df; }
[data-note-canvas] .score-drop.is-answer-active rect { fill: #f2f2f8; stroke: #c1c0d4; stroke-width: .8; }
[data-note-canvas] .score-note.selected { color: #626094; }
[data-note-canvas] .score-input-zone { fill: transparent; cursor: crosshair; }
[data-note-canvas] .score-fraction-line { stroke-width: 1; }
.interval-note-tools { justify-content: center; margin: 10px 0; }
.interval-note-tools .btn { font-size: 15px; }
.interval-recording-editor fieldset { border: 1px solid var(--line,#ddd); padding: 16px; border-radius: 12px; margin: 16px 0; }
.interval-target-positions { display: flex; flex-wrap: wrap; gap: 14px; margin: 14px 0 22px; }
.interval-target-positions label { display:flex; gap:6px; align-items:center; }
.interval-target-positions input, .interval-recording-choice input { width:auto; }
.interval-recording-sequence { display:grid; gap:12px; }
.interval-recording-sequence > div { display:grid; grid-template-columns:32px repeat(3,1fr); align-items:center; gap:12px; }
.interval-recording-sequence label { display:grid; gap:4px; }
.interval-recording-row { display:flex; justify-content:space-between; gap:20px; align-items:center; padding:20px 0; border-top:1px solid var(--line,#ddd); }
.interval-recording-choice { display:flex; align-items:center; gap:8px; margin:10px 0; }
@media(max-width:600px) { .interval-recording-sequence > div { grid-template-columns:24px repeat(3,minmax(0,1fr)); gap:5px; } .interval-recording-row { flex-direction:column; align-items:start; } .interval-recording-row audio { max-width:100%; } }
[data-note-canvas] .score-note text, [data-note-canvas] .score-note line { pointer-events: none; }
[data-note-canvas] .note-hit { fill: transparent; cursor: grab; }

.interval-palette [data-interval-token] { touch-action: none; user-select: none; cursor: grab; }
.interval-palette [data-interval-token]:active { cursor: grabbing; }
.interval-drag-token { position: fixed; z-index: 10000; pointer-events: none; transform: translate(-50%, -50%); padding: 8px 14px; border-radius: 8px; background: #f5f4fa; color: #5554c7; box-shadow: 0 3px 12px #0002; font: 500 23px Lato, sans-serif; }
.interval-drop.is-drop-target { background: #eeedf8; border-color: #b9b6db; }
.score-drop.is-drop-target rect { fill: #eeedf8; stroke: #b9b6db; }

/* Exercises share the lesson reading column and media margins. */
.exercise-reader, .interval-reader { width: min(100%, 700px); max-width: 700px; margin-inline: auto; }
.exercise-reader .exercise-intro,
.exercise-reader .exercise-choice-grid,
.exercise-reader .exercise-matrix-wrap,
.exercise-reader .exercise-task,
.exercise-reader .interval-segments,
.exercise-reader .exercise-summary .exercise-score,
.exercise-reader .exercise-summary .exercise-analysis-grid,
.exercise-reader .exercise-summary .exercise-resolution,
.sequence-page > .panel {
  box-sizing: border-box;
  width: calc(100% + 64px);
  max-width: calc(100% + 64px);
  margin-left: -32px;
  margin-right: -32px;
}
.exercise-reader .exercise-intro,
.sequence-page > .panel { padding: 32px; }
.exercise-reader .exercise-summary .exercise-score,
.exercise-reader .exercise-summary .exercise-resolution { padding: 32px; }
.exercise-reader .exercise-task [data-interval-staff] { width: 100%; max-width: 100%; margin-inline: 0; }
.exercise-feedback { position: relative; border-left: 0; }
.exercise-feedback::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--green); }
.exercise-feedback.is-wrong::before { background: var(--red); }
.exercise-reader [data-interval-staff] { width: calc(100% + 64px); max-width: calc(100% + 64px); margin-inline: -32px; overflow: hidden; }
.interval-score-editor [data-note-canvas] { min-width: 0; }
.interval-correct-answer { display: flex; align-items: center; gap: 20px; margin-block: 20px; font-size: 24px; }
.interval-correct-answer .interval-fraction { display: inline-flex; flex-direction: column; text-align: center; min-width: 72px; }
.interval-component-results { list-style: none; padding-left: 0; margin-block: 22px; }
.interval-review-key { margin: 8px 0 0; color: var(--muted); }
.interval-review-status.good { color: #32604c; }
@media(max-width: 600px) {
  .exercise-reader [data-interval-staff] { width: 100%; max-width: 100%; margin-inline: 0; }
}
@media (max-width: 800px) {
  .exercise-reader .lesson-audio,
  .exercise-reader .exercise-feedback,
  .exercise-reader .exercise-intro,
  .exercise-reader .exercise-choice-grid,
  .exercise-reader .exercise-matrix-wrap,
  .exercise-reader .exercise-task,
  .exercise-reader .interval-segments,
  .exercise-reader .exercise-summary .exercise-score,
  .exercise-reader .exercise-summary .exercise-analysis-grid,
  .exercise-reader .exercise-summary .exercise-resolution,
  .sequence-page > .panel {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }
}
@media (max-width: 600px) {
  .exercise-reader .exercise-intro,
  .sequence-page > .panel { padding: 24px; }
}

/* Notation controls use the platform palette without native SVG focus rings. */
[data-note-canvas], [data-note-canvas] [data-answer-field] { outline: none !important; }
[data-note-canvas] { user-select: none; }
[data-note-canvas] .score-drop { cursor: pointer; }
[data-note-canvas] .score-drop.is-answer-active rect, [data-note-canvas] .score-drop:focus-visible rect { fill: #f2f1f8; stroke: #bcb9d2; stroke-width: .65; }
.interval-key-title { font-weight: 600; margin: 16px 0 4px; }
.interval-palette .btn, .interval-note-tools .btn { font-size: 16px; font-weight: 700; }
.interval-music-symbol { font-family: Bravura; font-size: 28px; font-weight: 400; line-height: 1; display: inline-block; }
.interval-note-tools { margin: 16px 0; }
[data-interval-answer] > .actions { margin-top: 24px; }

[data-note-canvas] .score-key-title { font-family: Lato, sans-serif; font-size: 17px; font-weight: 700; }
.interval-score-editor { display: contents; }
.interval-note-tools { justify-content: flex-start; margin: 12px 0 0; gap: 6px; }
.interval-palette { justify-content: flex-start; gap: 6px 12px; padding: 8px 0 0; }
.interval-token-group { gap: 4px; padding-right: 0; }
.interval-palette .btn, .interval-note-tools .btn { min-width: 34px; min-height: 36px; height: 36px; padding: 0 8px; border-radius: 9px; font-size: 16px; }
.interval-note-tools [data-note-delete] { font-size: 21px; }
.interval-music-symbol { font-size: 27px; }

.interval-palette .interval-note-tools { margin: 0; gap: 4px; padding-right: 6px; border-right: 1px solid var(--line); }

[data-interval-staff] { position: relative; }
[data-interval-staff] > .score-key-title { position: absolute; top: 24px; left: 32px; font: 700 17px Lato, sans-serif; }
.interval-palette { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; grid-template-areas: "quality signs tools" "number . clear" "roman . ."; align-items: start; gap: 8px 12px; }
.tokens-quality { grid-area: quality; }
.tokens-number { grid-area: number; }
.tokens-roman { grid-area: roman; }
.tokens-sign { grid-area: signs; }
.interval-palette .interval-note-tools { grid-area: tools; padding: 0; border: 0; justify-content: flex-end; }
.interval-palette [data-clear-all] { grid-area: clear; }
@media(max-width:600px) {
  [data-interval-staff] > .score-key-title { left: 0; }
  .interval-palette { column-gap: 6px; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "quality signs" "number tools" "roman clear"; }
  .interval-token-group { flex-wrap: wrap; }
}

.exercise-feedback::before { content: none; }
[data-note-canvas][role=application], [data-note-canvas] .score-input-zone { cursor: default; }
[data-note-canvas] .note-cursor-preview { pointer-events: none; color: var(--violet); opacity: .75; }

/* Two-row symbol panel: qualities, accidentals and editing; numbers and degrees. */
.interval-palette { grid-template-columns: auto auto minmax(0, 1fr); grid-template-areas: "quality signs tools" "number roman roman"; gap: 8px 10px; }
.interval-palette .tokens-roman { justify-self: end; }
.interval-palette .interval-note-tools { display: flex; flex-wrap: nowrap; gap: 4px; justify-self: end; }
.interval-palette .interval-note-tools [data-clear-all] { font-size: 14px; padding-inline: 8px; }
.interval-palette > [data-clear-all] { grid-area: tools; justify-self: end; }
@media(max-width:600px) {
  .interval-palette { grid-template-columns: minmax(0,1fr) auto; grid-template-areas: "quality signs" "tools tools" "number number" "roman roman"; }
  .interval-palette .tokens-roman { justify-self: start; }
}
@media(min-width:601px) {
  .interval-palette { grid-template-columns: repeat(12, minmax(0,1fr)); grid-template-areas: "quality quality quality quality signs signs signs tools tools tools tools tools" "number number number number number number roman roman roman roman roman roman"; column-gap: 6px; }
  .interval-palette .btn { min-width: 32px; padding-inline: 7px; }
  .interval-palette .tokens-sign { justify-self: center; }
}

[data-note-canvas].has-note-cursor, [data-note-canvas].has-note-cursor * { cursor: none !important; }

/* Roomier controls, with touch-sized targets on narrow screens. */
.interval-palette .btn, .interval-note-tools .btn { min-width: 38px; padding-inline: 9px; }
@media(min-width:601px) {
  .interval-palette { width: calc(100% + 64px); margin-inline: -32px; }
  .interval-palette .tokens-number, .interval-palette .tokens-roman { gap: 3px; }
}
[data-note-canvas] .score-note { touch-action: none; }
@media(max-width:600px) {
  .interval-palette { width: 100%; margin-inline: 0; grid-template-columns: minmax(0,1fr); grid-template-areas: "quality" "signs" "tools" "number" "roman"; gap: 8px; }
  .interval-palette .btn, .interval-note-tools .btn { min-width: 44px; min-height: 44px; height: 44px; padding-inline: 10px; }
  .interval-palette .interval-note-tools { justify-self: start; flex-wrap: wrap; }
  .interval-token-group { gap: 5px; }
  [data-interval-staff] > .score-key-title { top: 8px; font-size: 15px; }
}

.touch-note-step { display: none; }
@media(max-width:600px) {
  .touch-note-step { display: inline-flex; }
  .tokens-number { display: grid; grid-template-columns: repeat(4,44px); }
}
@media(max-width:360px) {
  .tokens-roman { display: grid; grid-template-columns: repeat(4,44px); }
}
/* Keep the controls aligned with the standard text column. */
@media(min-width:601px) {
  .interval-palette { width: 100%; margin-inline: 0; }
  .interval-palette .tokens-number, .interval-palette .tokens-roman { flex-wrap: nowrap; gap: 3px; }
  .interval-palette { grid-template-areas: "quality quality quality quality signs signs signs tools tools tools tools tools" "number number number number number number number roman roman roman roman roman"; }
}
@media(min-width:601px) {
  .interval-palette { grid-template-columns: repeat(15,minmax(0,1fr)); column-gap: 1px; grid-template-areas: "quality quality quality quality quality signs signs signs tools tools tools tools tools tools tools" "number number number number number number number number roman roman roman roman roman roman roman"; }
  .interval-palette .tokens-quality, .interval-palette .tokens-number, .interval-palette .tokens-roman { gap: 1px; }
}
/* Size the first row by its contents; split free space equally around signs. */
@media(min-width:601px) {
  .interval-palette { grid-template-columns: max-content 1fr max-content 1fr max-content; grid-template-areas: "quality . signs . tools" "number number number roman roman"; column-gap: 0; }
  .interval-palette .tokens-sign { flex-wrap: nowrap; justify-self: center; gap: 4px; }
  .interval-palette .tokens-number { justify-self: start; }
  .interval-palette .tokens-roman { justify-self: end; }
}

/* Matrix has its own fitted table and linear toolbar. */
.interval-matrix-form .exercise-matrix-wrap { overflow-x: hidden; }
.interval-matrix { min-width: 0; table-layout: fixed; }
.interval-matrix th:first-child { width: 13%; padding-inline: 6px; }
.interval-matrix th, .interval-matrix td { min-width: 0; padding: 10px 5px; overflow-wrap: anywhere; }
.interval-matrix thead th { font-size: 14px; }
.interval-matrix .interval-fixed, .interval-matrix td .interval-drop { min-width: 0; max-width: 100%; padding-inline: 5px; }
.interval-matrix-form .interval-palette { display: flex; flex-wrap: nowrap; align-items: center; justify-content: space-between; gap: 5px; }
.interval-matrix-form .tokens-roman { order: 0; }
.interval-matrix-form .tokens-sign { order: 1; }
.interval-matrix-form .matrix-edit-tools { order: 2; display: flex; gap: 2px; }
.interval-matrix-form [data-clear-all] { order: 3; padding-inline: 5px; font-size: 14px; }
.interval-matrix-form .interval-token-group { flex-wrap: nowrap; gap: 1px; }
.interval-matrix-form .tokens-quality, .interval-matrix-form .tokens-number { order: 1; }
.interval-matrix-form .interval-palette:has(.tokens-quality) { flex-wrap: wrap; }
@media(max-width:600px) {
  .interval-matrix thead th { font-size: 11px; line-height: 1.3; }
  .interval-matrix th:first-child { width: 14%; font-size: 12px; }
  .interval-matrix th, .interval-matrix td { padding: 8px 2px; }
  .interval-matrix .interval-fixed, .interval-matrix td .interval-drop { font-size: 17px; padding-inline: 2px; }
  .interval-matrix-form .interval-palette { flex-wrap: wrap; justify-content: flex-start; gap: 8px; }
  .interval-matrix-form .tokens-roman { display: flex; flex-wrap: wrap; }
}

.interval-matrix td .interval-drop { min-width: 44px; }

/* Sequence exercises and review queue */
.sequence-page > a + h1 { margin-top: 20px; }
.sequence-page .panel { margin-top: 24px; }
.sequence-param { display: flex; flex-wrap: wrap; gap: 12px 20px; border: 1px solid var(--border, #dedbd4); padding: 16px; border-radius: 12px; }
.sequence-param legend { font-weight: 700; padding: 0 6px; }
.sequence-param label { display: inline-flex; gap: 7px; align-items: center; }
.sequence-param input { width: auto; }
.sequence-topic-selection, .sequence-topic-admin { display: grid; gap: 14px; min-width: 0; }
.sequence-topic-selection .field { display: grid; gap: 8px; width: 100%; min-width: 0; color: var(--ink); font-weight: 700; }
.sequence-topic-selection select { box-sizing: border-box; width: 100%; max-width: 100%; min-width: 0; min-height: 46px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--white); color: var(--ink); font-size: clamp(16px, 2vw, 18px); white-space: nowrap; }
.sequence-topic-selection .custom-select-option { white-space: nowrap; }
.sequence-topic-selection .sequence-param, .sequence-topic-admin .sequence-param { border-color: var(--line); background: var(--white); min-width: 0; }
.sequence-topic-symbol { white-space: nowrap; }
.sequence-topic-selection .sequence-param sup, .sequence-topic-admin .sequence-param sup { font-size: .72em; line-height: 0; vertical-align: super; }
.sequence-topic-selection .sequence-topic-nested, .sequence-topic-admin .sequence-topic-nested { margin-left: 22px; }
.sequence-topic-summary, .sequence-topic-admin p { margin: 0; line-height: 1.5; }
.sequence-topic-warning { padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft-violet); color: var(--violet-dark); }
@media (max-width: 600px) { .sequence-topic-selection .sequence-param, .sequence-topic-admin .sequence-param { display: grid; gap: 12px; } .sequence-topic-selection label, .sequence-topic-admin label { overflow-wrap: anywhere; } }
.sequence-palette, .sequence-symbols, .sequence-playbar, .sequence-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 16px 0; }
.sequence-audio-intro { margin-bottom: 0; }
.sequence-audio-intro + .sequence-listen-count { margin-top: 8px; }
.sequence-page > .sequence-lesson-audio { margin-top: 24px; margin-bottom: 0; }
.sequence-page > .sequence-answer-card { margin-top: 48px; }
.sequence-answer-card h2 { margin: 0 0 12px; font-size: 28px; line-height: 1.24; }
.sequence-answer-card > p { margin: 0 0 28px; font-size: 18px; line-height: 1.6; }
.sequence-lesson-audio .audio-toggle:disabled { opacity: .7; cursor: default; }
.sequence-lesson-audio .audio-meta .sequence-audio-key { font-size: 16px; font-weight: 600; }
.unskippable-audio.playing .audio-icon-play { display: block; }
.unskippable-audio .audio-toggle:disabled { opacity: .7; cursor: default; }
.sequence-audio-progress { --audio-progress: 0%; height: 6px; border-radius: 999px; background: linear-gradient(90deg, var(--violet) 0 var(--audio-progress), rgba(255, 255, 255, .78) var(--audio-progress) 100%); }
.sequence-listen-count { margin: 0; color: var(--ink); }
.sequence-upload-zone { display: flex; align-items: center; min-height: 92px; padding: 18px; border: 1px dashed var(--violet); border-radius: 16px; background: var(--soft-violet); }
.sequence-upload-button { position: relative; overflow: hidden; cursor: pointer; }
.sequence-upload-button input[type="file"] { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.sequence-upload-button:focus-within { outline: 2px solid var(--violet-dark); outline-offset: 3px; }
.sequence-heic-link { display: flex; align-items: center; min-height: 90px; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft-violet); color: var(--violet-dark); font-weight: 700; }
.sequence-palette .btn { min-height: 50px; }
.sequence-symbol { display: inline-flex; align-items: center; padding: 8px; }
.sequence-fraction { display: inline-flex; flex-direction: column; text-align: center; min-width: 34px; line-height: 1.25; }
.sequence-fraction > span:first-child { border-bottom: 1px solid currentColor; padding-bottom: 3px; }
.sequence-fraction > span:last-child { padding-top: 3px; }
.sequence-chord { display: inline-flex; align-items: center; font-size: 22px; font-weight: 600; }
.sequence-indices { display: inline-flex; flex-direction: column; font-size: 15px; margin-left: 2px; line-height: 1; }
.sequence-indices sup, .sequence-indices sub { position: static; line-height: 1.1; min-height: .6em; }
.sequence-alteration { margin-left: 4px; font-size: 13px; align-self: start; }
.sequence-chain { display: flex; flex-wrap: wrap; gap: 14px; padding-left: 26px; }
.sequence-chain li { border: 1px solid var(--border, #dedbd4); border-radius: 12px; padding: 14px; min-width: 110px; text-align: center; }
.sequence-chain li > div { margin-top: 10px; display: flex; gap: 4px; }
.sequence-images { display: flex; flex-wrap: wrap; gap: 16px; margin: 20px 0; }
.sequence-images figure { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin: 0; max-width: 260px; }
.sequence-images img { display: block; width: 100%; height: 220px; object-fit: contain; border: 1px solid var(--border, #dedbd4); border-radius: 10px; }
.sequence-history-status { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.sequence-history-status .btn { text-decoration: none; }
.sequence-expired-note { padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft-violet); color: var(--violet-dark); }
.sequence-score { font-size: 36px; font-weight: 700; }
.sequence-key { font-size: 20px; }
.sequence-admin-layout { display: grid; grid-template-columns: minmax(0, 1fr); align-items: start; gap: 28px; }
.sequence-records-panel .block-head { align-items: center; margin-bottom: 18px; }
.sequence-records-panel .block-head h2 { margin: 0 0 6px; }
.sequence-records-panel .block-head p { margin: 0; }
.sequence-reviewer-settings h2 { margin-bottom: 20px; font-size: clamp(22px, 2.3vw, 26px); line-height: 1.25; }
.sequence-reviewer-form { max-width: 700px; }
.sequence-reviewer-form > p { margin: 0; line-height: 1.5; overflow-wrap: anywhere; }
.sequence-reviewer-form .field > span { color: var(--muted); font-size: 14px; font-weight: 700; }
.sequence-reviewer-form .field input { box-sizing: border-box; font: inherit; font-size: 16px; }
.sequence-reviewer-form .field input:focus-visible { outline: 2px solid var(--violet); outline-offset: 2px; }
.sequence-reviewer-form > .btn { justify-self: start; }
.sequence-records-table { min-width: 1050px; }
.sequence-records-table td { max-width: 230px; overflow-wrap: anywhere; }
.sequence-records-table .icon-btn { display: inline-flex; }
.sequence-distribution.available { color: #28744a; }
.sequence-distribution.unavailable { color: var(--muted); }
.sequence-record-dialog { width: min(1100px, calc(100vw - 32px)); padding: 0; border: 0; border-radius: 16px; box-sizing: border-box; overscroll-behavior: none; -webkit-overflow-scrolling: auto; }
.sequence-record-dialog .sequence-admin-record-form { border: 0; border-radius: 0; box-shadow: none; margin: 0; }
.sequence-record-dialog .dialog-heading h2 { margin: 0; }
.sequence-record-dialog .dialog-heading p { margin: 6px 0 0; }
.sequence-record-dialog .dialog-heading .icon-btn { flex: none; font-size: 24px; }
.sequence-record-dialog .dialog-actions { justify-content: flex-end; flex-wrap: wrap; }
.sequence-admin-record-form { width: 100%; gap: 22px; }
.sequence-admin-top-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.sequence-admin-audio-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.sequence-admin-parameters { display: grid; gap: 14px; }
.sequence-admin-parameters h3 { margin: 0; }
.sequence-admin-param legend label { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.sequence-admin-param-options { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.sequence-admin-param-options label { display: inline-flex; align-items: center; gap: 7px; }
.sequence-admin-record-form > label { display: grid; gap: 8px; color: var(--muted); font-size: 14px; font-weight: 700; }
.sequence-admin-record-form input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
.sequence-admin-record-form select,
.sequence-admin-record-form textarea,
.sequence-parameter-form input:not([type="checkbox"]),
.sequence-parameter-form select,
.sequence-parameter-form textarea,
.sequence-admin-record-form .sequence-token-builder input,
.sequence-admin-record-form .sequence-token-builder select,
.sequence-admin-record-form .sequence-parameter-form input:not([type="checkbox"]),
.sequence-admin-record-form .sequence-parameter-form select,
.sequence-admin-record-form .sequence-parameter-form textarea {
  width: 100%; min-height: 46px; border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; background: var(--white); color: var(--ink);
}
.sequence-admin-record-form textarea, .sequence-parameter-form textarea { min-height: 120px; resize: vertical; }
.sequence-admin-record-form input[type="file"] { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 12px; padding: 5px 8px; background: var(--white); color: var(--muted); cursor: pointer; }
.sequence-admin-record-form input[type="file"]::file-selector-button { min-height: 36px; margin-right: 12px; border: 0; border-radius: 9px; padding: 0 14px; background: var(--soft-violet); color: var(--violet-dark); font: inherit; font-weight: 700; cursor: pointer; }
.sequence-admin-record-form input[type="checkbox"], .sequence-parameter-form input[type="checkbox"] { accent-color: var(--violet); }
.sequence-admin-record-form fieldset { display: flex; flex-wrap: wrap; gap: 14px 22px; border: 1px solid var(--line); border-radius: 12px; padding: 16px; background: var(--white); }
.sequence-admin-record-form fieldset label { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); }
.exercise-bank-content { display: grid; gap: 28px; }
.admin-exercise-collections { margin-bottom: 28px; }
.admin-exercise-definitions { gap: 28px; }
.admin-exercise-collections input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
.admin-exercise-collections select,
.admin-exercise-collections textarea,
.exercise-definition-editor input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
.exercise-definition-editor select,
.exercise-definition-editor textarea,
.exercise-bank-upload-form input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
.exercise-bank-upload-form select,
.exercise-bank-upload-form textarea { width: 100%; min-height: 46px; border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; background: var(--white); color: var(--ink); }
.admin-exercise-collections textarea,
.exercise-definition-editor textarea,
.exercise-bank-upload-form textarea { min-height: 120px; resize: vertical; }
.admin-exercise-collections input[type="file"],
.exercise-definition-editor input[type="file"],
.exercise-bank-upload-form input[type="file"] { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 12px; padding: 5px 8px; background: var(--white); color: var(--muted); }
.admin-exercise-collections input[type="checkbox"],
.exercise-definition-editor input[type="checkbox"],
.exercise-bank-upload-form input[type="checkbox"] { accent-color: var(--violet); }
.sequence-record-list { display: grid; gap: 16px; margin-top: 20px; }
.sequence-record-list a { display: grid; gap: 5px; padding-bottom: 12px; border-bottom: 1px solid var(--border, #dedbd4); }
.sequence-record-list span { font-size: 13px; }
.sequence-token-builder, .sequence-history-filter { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.sequence-token-builder label, .sequence-history-filter label { display: grid; gap: 6px; min-width: 110px; flex: 1; }
.sequence-token-builder input { width: 100%; }
.sequence-parameter-form { display: grid; gap: 12px; padding: 22px 0; border-bottom: 1px solid var(--border, #dedbd4); }
.sequence-parameter-form label { display: grid; gap: 6px; }
.sequence-history-card, .sequence-progress-row { margin: 16px 0; }
.sequence-progress-row { padding: 12px 0; border-bottom: 1px solid var(--border, #dedbd4); }
.sequence-results-filter { margin: 16px 0 22px; align-items: end; }
.sequence-results-filter input, .sequence-results-filter select { min-height: 44px; border: 1px solid var(--line); border-radius: 10px; background: var(--white); padding: 8px 12px; color: inherit; }
.sequence-results-filter input[type="date"] { color-scheme: light; accent-color: var(--violet); }
.sequence-results-filter .sequence-student-search { position: relative; min-width: 210px; flex: 2; }
.sequence-search-suggestions { position: absolute; z-index: 8; top: 100%; left: 0; right: 0; max-height: 260px; overflow: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--white); box-shadow: 0 14px 30px #28204621; }
.sequence-search-suggestions[hidden] { display: none; }
.sequence-search-suggestions button { display: grid; gap: 3px; width: 100%; padding: 10px 12px; border: 0; background: transparent; text-align: left; cursor: pointer; }
.sequence-search-suggestions button:hover, .sequence-search-suggestions button:focus { background: var(--soft); }
.sequence-search-suggestions small, .sequence-results-table small { display: block; color: var(--muted); }
.sequence-results-table a { color: var(--violet); font-weight: 650; text-decoration: none; }
.sequence-results-table a:hover { text-decoration: underline; }
.sequence-results-table tr[data-seq-result-href] { cursor: pointer; }
.sequence-results-table tr[data-seq-result-href]:hover, .sequence-results-table tr[data-seq-result-href]:focus { background: var(--soft); }
.sequence-result-detail td { background: var(--soft); }
.sequence-result-detail form { max-width: 560px; }
[data-seq-review] label { display: grid; gap: 8px; min-width: 0; }
[data-seq-review] textarea[name="comment"] { box-sizing: border-box; display: block; width: 100%; min-height: 120px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--white); color: var(--ink); line-height: 1.45; resize: vertical; }
[data-seq-review] textarea[name="comment"]:focus-visible { outline: 2px solid var(--violet); outline-offset: 2px; }
.sequence-answer-detail { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 300px; overflow: auto; font-size: 13px; }
.sequence-editor { min-width: 0; }
@media (max-width: 760px) { .sequence-admin-top-grid { grid-template-columns: 1fr; } .sequence-admin-audio-grid { grid-template-columns: 1fr; } .sequence-records-panel .block-head { align-items: stretch; } .sequence-record-dialog .sequence-admin-record-form { padding: 18px; } .sequence-history-filter { display: grid; grid-template-columns: 1fr 1fr; } .sequence-playbar .btn { width: 100%; } }

@media (max-width: 780px) {
  .landing-room-hero,
  .landing-room-grid {
    min-height: 870px;
  }

  .landing-room-grid {
    grid-template-columns: 1fr;
    align-items: start;
    padding: 48px 20px 440px;
  }

  .landing-room-copy {
    max-width: 100%;
    padding: 0;
  }

  .landing-room-copy h1 {
    min-height: 4.16em;
    font-size: clamp(38px, 10.5vw, 52px);
  }

  .landing-title-line {
    white-space: normal;
  }

  .landing-title-dynamic {
    min-height: 2.12em;
    white-space: normal;
  }

  .landing-lede {
    max-width: 34ch;
    margin-top: 20px;
    font-size: 17px;
  }

  .landing-actions {
    margin-top: 24px;
  }

  .landing-actions .btn {
    flex: 1 1 180px;
  }

  .landing-room-art {
    inset: auto -8% 0 4%;
    width: 104%;
    height: 410px;
    background-size: auto 100%;
  }

  .landing-room-wash {
    background: linear-gradient(180deg, #f7f3eb 0 50%, rgba(247, 243, 235, 0.78) 60%, rgba(247, 243, 235, 0.03) 100%);
  }

  .landing-room-copy::after {
    right: 0;
    left: 0;
  }
}

@media (max-width: 600px) {
  .landing-topbar {
    min-height: 66px;
    flex-wrap: nowrap;
    padding: 12px 18px;
  }

  .landing-topbar .brand {
    width: 144px;
  }

}

@media (max-width: 460px) {
  .landing-room-hero,
  .landing-room-grid {
    min-height: 940px;
  }

  .landing-room-grid {
    padding-bottom: 430px;
  }

  .landing-actions {
    display: grid;
  }

  .landing-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .landing-type-cursor {
    display: none;
  }
}
.sequence-page h1, .sequence-page h2, .sequence-admin-layout h2 { overflow-wrap: anywhere; }
.sequence-page .panel h2 { font-size: clamp(22px, 2.5vw, 28px); }
.sequence-history-card h3 { overflow-wrap: anywhere; }
.sequence-admin-layout .form-grid > label { display: grid; gap: 7px; }
.sequence-editor .sequence-palette { max-height: 350px; overflow: auto; }

[data-interval-sequence-editor] { min-width: 0; }
[data-interval-sequence-editor] .interval-palette { width: 100%; margin-inline: 0; display: flex; flex-wrap: wrap; gap: 8px; }
[data-interval-sequence-editor] .tokens-quality { order: 0; }
[data-interval-sequence-editor] .tokens-sign { order: 1; }
[data-interval-sequence-editor] .interval-note-tools { order: 2; margin-left: auto; }
[data-interval-sequence-editor] .tokens-number { order: 3; }
[data-interval-sequence-editor] .tokens-roman { order: 4; }

.sequence-record-dialog .sequence-editor > h3 { margin: 0 0 16px; }
.sequence-record-dialog [data-admin-interval-editor] { text-align: center; }
.sequence-record-dialog [data-admin-interval-editor] .interval-chain-answers { margin: 12px 0; }
.interval-append-button { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border: 1px solid var(--violet); border-radius: 50%; background: var(--white); color: var(--violet-dark); font-size: 28px; line-height: 1; cursor: pointer; }
.interval-append-button:hover, .interval-append-button:focus-visible { background: var(--soft-violet); outline-offset: 3px; }
.interval-append-button[hidden] { display: none; }
.sequence-record-dialog [data-admin-interval-editor] .interval-palette { display: grid; grid-template-columns: max-content max-content minmax(170px, auto); grid-template-areas: "qualities qualities tools" "numbers signs tools" "roman roman tools"; align-items: center; justify-content: center; column-gap: 10px; row-gap: 8px; width: fit-content; max-width: 100%; margin: 20px auto 0; padding: 18px; border: 0; border-radius: 14px; background: var(--soft); }
.sequence-record-dialog [data-admin-interval-editor] .tokens-quality { grid-area: qualities; }
.sequence-record-dialog [data-admin-interval-editor] .tokens-number { grid-area: numbers; }
.sequence-record-dialog [data-admin-interval-editor] .tokens-sign { grid-area: signs; }
.sequence-record-dialog [data-admin-interval-editor] .tokens-roman { grid-area: roman; }
.sequence-record-dialog [data-admin-interval-editor] .interval-token-group { justify-self: start; gap: 4px; padding: 0; }
.sequence-record-dialog [data-admin-interval-editor] .interval-palette .btn { min-width: 38px; padding: 7px 9px; }
.sequence-record-dialog [data-admin-interval-editor] .interval-note-tools { grid-area: tools; display: grid; grid-template-columns: repeat(2, minmax(38px, 1fr)); grid-template-rows: repeat(3, min-content); gap: 6px; align-self: stretch; align-content: space-between; justify-self: stretch; margin: 0; }
.sequence-record-dialog [data-admin-interval-editor] .interval-note-tools .btn { min-width: 0; padding-inline: 8px; }
.sequence-record-dialog [data-admin-interval-editor] [data-sequence-erase] { grid-area: 1 / 1; }
.sequence-record-dialog [data-admin-interval-editor] [data-sequence-undo] { grid-area: 1 / 2; }
.sequence-record-dialog [data-admin-interval-editor] .interval-note-tools [data-clear-all] { grid-area: 2 / 1 / span 1 / -1; }
.sequence-record-dialog [data-admin-interval-editor] .interval-save-answer { grid-area: 3 / 1 / span 1 / -1; font-size: 14px; }
.sequence-chord-editor .sequence-token-builder { align-items: start; }
.sequence-chord-editor .sequence-token-builder > label, .sequence-chord-editor .sequence-function-field { min-width: 100px; }
.sequence-chord-editor .sequence-function-field { display: grid; gap: 6px; flex: 1.3; }
.sequence-chord-editor .sequence-token-builder > .btn { margin-top: 24px; }
.sequence-function-picker summary { position: relative; display: flex; align-items: center; min-height: 46px; padding: 8px 44px 8px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--white); color: var(--ink); font-size: 20px; cursor: pointer; list-style: none; }
.sequence-function-picker summary::-webkit-details-marker { display: none; }
.sequence-function-picker summary::after { content: ''; position: absolute; top: 50%; right: 18px; width: 9px; height: 9px; border-right: 2px solid var(--violet); border-bottom: 2px solid var(--violet); transform: translateY(-70%) rotate(45deg); }
.sequence-function-picker summary:hover, .sequence-function-picker summary:focus-visible { border-color: var(--violet); background: var(--soft-violet); outline-offset: 2px; }
.sequence-function-picker[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.sequence-function-picker { position: relative; }
.sequence-function-picker[open] { z-index: 5; }
.sequence-function-picker[open] summary { border-radius: 12px 12px 0 0; }
.sequence-function-options { position: absolute; top: 100%; left: 0; right: 0; z-index: 1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; padding: 8px; border: 0; border-radius: 0 0 12px 12px; background: var(--white); box-shadow: 0 12px 28px rgb(31 35 48 / 14%); }
.sequence-function-picker.opens-up summary { border-radius: 0 0 12px 12px; }
.sequence-function-picker.opens-up .sequence-function-options { top: auto; bottom: 100%; border: 0; border-radius: 12px 12px 0 0; box-shadow: 0 -12px 28px rgb(31 35 48 / 14%); }
.sequence-function-options button { min-height: 36px; border: 0; border-radius: 8px; background: transparent; color: var(--ink); font: inherit; font-size: 18px; cursor: pointer; }
.sequence-function-options button:hover, .sequence-function-options button:focus-visible { background: var(--soft-violet); color: var(--violet-dark); }
.sequence-alteration-input { display: flex; gap: 5px; }
.sequence-alteration-input input { min-width: 70px; }
.sequence-alteration-input .btn { min-width: 40px; padding-inline: 8px; font-size: 20px; }
.sequence-chord-result { min-height: 70px; margin-top: 20px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
.sequence-chord-result .sequence-symbols { margin: 0; }
.sequence-chord-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.sequence-chord-actions .btn:last-child { margin-left: auto; }
.sequence-saved-alternative { margin-top: 14px; }
.sequence-alternatives { margin-top: 18px; }
.sequence-alternatives summary { width: fit-content; color: var(--violet-dark); cursor: pointer; }
.sequence-alternatives > .btn { margin-top: 12px; }
@media (max-width: 760px) {
  .sequence-record-dialog [data-admin-interval-editor] .interval-palette { display: flex; flex-wrap: wrap; justify-content: flex-start; }
  .sequence-record-dialog [data-admin-interval-editor] .interval-token-group { width: 100%; }
  .sequence-record-dialog [data-admin-interval-editor] .interval-note-tools { display: grid; width: 100%; }
}
.assignment-list { margin: 24px 0 32px; }
.assignment-list h2 { margin: 0 0 16px; }
.assignment-list .catalog { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.assignment-list .lesson-card { display: block; }
.assignment-list .lesson-card h3 { margin: 8px 0; }
.assignment-students { max-height: 260px; overflow: auto; border: 1px solid var(--border, #ddd); border-radius: 12px; padding: 8px; }
.assignment-students label { display: flex; align-items: flex-start; gap: 10px; padding: 8px; cursor: pointer; }
.assignment-students label[hidden] { display: none; }
.assignment-students small { display: block; opacity: .7; }