#site-root {
  min-height: 100vh;
  --pointer-x: 70%;
  --pointer-y: 18%;
  transition: opacity .16s ease, transform .16s ease;
}

.page-loading #site-root {
  opacity: .55;
  transform: translateY(2px);
  pointer-events: none;
}

.app-main {
  background:
    radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(111,223,247,.12), transparent 28%),
    radial-gradient(circle at 18% 72%, rgba(184,166,255,.08), transparent 25%),
    #f2f3f5;
}

.reveal-ready {
  opacity: 0;
  transform: translateY(22px) scale(.985);
  transition: opacity .68s cubic-bezier(.2,.7,.2,1), transform .68s cubic-bezier(.2,.7,.2,1);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal-ready.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.dynamic-card {
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease, filter .28s ease;
}

.dynamic-card:hover {
  transform: translateY(-5px);
  border-color: rgba(82,184,216,.38);
  box-shadow: 0 20px 48px rgba(27,52,79,.12);
}

.button,
.sidebar nav a,
.main-nav a,
.text-button {
  transition: transform .2s ease, filter .2s ease, color .2s ease, background .2s ease, opacity .2s ease;
}

.button:active,
.text-button:active { transform: translateY(1px) scale(.98); }

.brand-mark { animation: brandFloat 5.5s ease-in-out infinite; }
.brand-mark:before { animation: brandOrbit 8s linear infinite; }
.brand-mark:after { animation: brandOrbitReverse 6s linear infinite; }
.hero,.forum-hero,.model-hero,.final-cta { overflow: hidden; }
.hero-image,.forum-hero > img,.model-hero > img,.final-cta > img { animation: sceneBreath 18s ease-in-out infinite alternate; }
.teacher-photo img,.teacher-detail-photo img,.teacher-assignment > img { transition: transform .8s cubic-bezier(.2,.7,.2,1), filter .5s ease; }
.teacher-photo:hover img,.teacher-detail-photo:hover img,.teacher-assignment:hover > img { transform: scale(1.035); filter: saturate(1.06); }

@keyframes brandFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-3px)} }
@keyframes brandOrbit { to{transform:rotate(395deg)} }
@keyframes brandOrbitReverse { to{transform:rotate(-395deg)} }
@keyframes sceneBreath { from{transform:scale(1.015)} to{transform:scale(1.055)} }

.profile-avatar {
  overflow: hidden;
  flex: none;
  background: linear-gradient(135deg, var(--profile-accent, #6fdff7), #a69cff) !important;
  color: #10213a;
  display: grid;
  place-items: center;
  font-weight: 800;
}

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

.profile-mini-avatar {
  width: 42px;
  height: 42px;
  border-radius: 13px;
}

.page-actions,
.teacher-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.bgm-player {
  position: fixed;
  z-index: 500;
  right: 18px;
  bottom: 18px;
  width: 380px;
  color: white;
}

.bgm-shell {
  padding: 14px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 19px;
  background: rgba(7,18,35,.94);
  box-shadow: 0 18px 55px rgba(0,0,0,.32);
  backdrop-filter: blur(20px);
}

.bgm-shell > header,
.bgm-controls,
.bgm-footer {
  display: flex;
  align-items: center;
  gap: 8px;
}

.bgm-shell > header { justify-content: space-between; margin-bottom: 10px; }
.bgm-controls {
  display: grid;
  grid-template-columns: 30px 38px 30px auto minmax(90px,1fr) auto;
}
.bgm-footer {
  justify-content: space-between;
  gap: 14px;
  margin-top: 12px;
  padding-top: 11px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.bgm-shell button {
  border: 1px solid rgba(255,255,255,.15);
  color: white;
  background: rgba(255,255,255,.08);
  cursor: pointer;
}

.bgm-toggle {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  font-size: 13px;
  flex: none;
}

.bgm-player.playing .bgm-toggle {
  background: linear-gradient(135deg,#69dff8,#9f9bff);
  color: #08162a;
}

.bgm-controls > button:not(.bgm-toggle) { width: 30px; height: 30px; border-radius: 9px; font-size: 20px; flex: none; }
.bgm-close { width: 28px; height: 28px; border-radius: 9px; font-size: 18px; flex: none; }

.bgm-copy {
  min-width: 0;
  display: grid;
}

.bgm-copy small {
  color: #75ddf6;
  font-size: 6px;
  letter-spacing: .16em;
}

.bgm-copy b,
.bgm-copy span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bgm-copy b { font-size: 9px; margin-top: 2px; }
.bgm-copy span { font-size: 7px; color: rgba(255,255,255,.5); margin-top: 2px; }
.bgm-controls > span { font-size: 7px; color: rgba(255,255,255,.58); flex: none; }
.bgm-controls input { min-width: 0; flex: 1; height: 4px; padding: 0; accent-color: #72ddf6; }
.bgm-footer button { border: 0; padding: 0; background: transparent; color: #80def3; font-size: 8px; white-space: nowrap; }
.bgm-footer label { min-width: 0; display: flex; align-items: center; gap: 7px; font-size: 7px; color: rgba(255,255,255,.58); white-space: nowrap; }
.bgm-footer input { width: 92px; height: 4px; padding: 0; accent-color: #a8a0ff; }
.bgm-playlist { display: none; max-height: 190px; overflow: auto; list-style: none; margin: 10px 0 0; padding: 6px; border: 1px solid rgba(255,255,255,.09); border-radius: 12px; background: rgba(2,10,22,.62); }
.bgm-player.list-open .bgm-playlist { display: grid; gap: 4px; }
.bgm-playlist button { width: 100%; border: 0; border-radius: 10px; padding: 8px; display: grid; grid-template-columns: 24px 1fr; text-align: left; }
.bgm-playlist button.active { background: rgba(105,223,248,.16); color: #83e6fa; }
.bgm-playlist button > span { grid-row: 1 / 3; align-self: center; font-size: 8px; opacity: .55; }
.bgm-playlist b { font-size: 8px; }
.bgm-playlist small { font-size: 6px; opacity: .52; margin-top: 2px; }
.bgm-reopen { display: none; margin-left: auto; width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.16); border-radius: 15px; color: #0c1c31; background: linear-gradient(135deg,#69dff8,#aaa1ff); box-shadow: 0 12px 35px rgba(0,0,0,.25); cursor: pointer; font-size: 18px; }
.bgm-player.closed { width: 48px; }
.bgm-player.closed .bgm-shell { display: none; }
.bgm-player.closed .bgm-reopen { display: block; }

.fixed-schedule-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px solid #cfe9f0;
  border-radius: 15px;
  background: linear-gradient(135deg,#effbfd,#f5f7ff);
}
.fixed-schedule-card > span { width: 42px; height: 42px; flex: none; display: grid; place-items: center; border-radius: 13px; background: #dff6fb; color: #45acc8; }
.fixed-schedule-card > span .icon { width: 18px; }
.fixed-schedule-card > div { display: grid; gap: 3px; }
.fixed-schedule-card small { color: #62a9bc; font-size: 7px; letter-spacing: .12em; }
.fixed-schedule-card b { color: #172d47; font-size: 14px; }
.fixed-schedule-card p { margin: 0; color: #738193; font-size: 8px; }

.resource-link-card { margin-top: 16px; padding: 14px; border: 1px solid #dce7eb; border-radius: 12px; background: #f5fafb; }
.resource-link-card > small { display: block; margin-bottom: 8px; color: #6c9ead; font-size: 7px; letter-spacing: .08em; }
.resource-link-card > a { display: flex; align-items: center; gap: 8px; color: #328fab; font-size: 8px; word-break: break-all; }
.resource-link-card .icon { width: 14px; flex: none; }
.reply .attachments { margin-top: 12px; }
.reply .resource-link-card { margin-top: 12px; }
.compact-drop { min-height: 72px !important; }
.advanced-settings { padding: 12px 14px; border: 1px solid #dde5e9; border-radius: 12px; background: #f7f9fa; }
.advanced-settings summary { cursor: pointer; color: #4d6a7d; font-size: 8px; font-weight: 700; }
.advanced-settings[open] { display: grid; gap: 12px; }
.advanced-settings[open] summary { margin-bottom: 4px; }
.inline-flash { position: static; margin: 0 0 14px; box-shadow: none; animation: none; }

.profile-settings-grid {
  display: grid;
  grid-template-columns: 330px minmax(0,1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 14px;
}

.profile-card-preview {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 0 24px 28px;
}

.profile-cover {
  height: 132px;
  margin: 0 -24px 0;
  background: linear-gradient(135deg, color-mix(in srgb,var(--profile-accent) 78%,#fff), #928cff);
  background-size: cover;
  background-position: center;
}

.profile-card-avatar {
  width: 92px;
  height: 92px;
  margin: -46px auto 12px;
  border-radius: 29px;
  border: 5px solid white;
  font-size: 28px;
  position: relative;
}

.profile-card-preview > small { color: #4eaec9; letter-spacing: .14em; font-size: 7px; }
.profile-card-preview h2 { margin: 8px 0 6px; font-size: 24px; }
.profile-card-preview > b { font-size: 9px; color: #59687b; }
.profile-card-preview > p { font-size: 9px; line-height: 1.8; color: #758092; min-height: 54px; }
.profile-card-preview > span { display: inline-block; border-radius: 20px; padding: 7px 12px; background: #f2f5f7; font-size: 8px; }

.teacher-profile-callout {
  margin-top: 18px;
  padding: 14px;
  border-radius: 13px;
  background: #f1f8fa;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.teacher-profile-callout b { font-size: 10px; }
.teacher-profile-callout p { font-size: 8px; color: #6f7b8b; margin: 4px 0 0; }

.profile-public-page,
.teachers-public-page,
.teacher-public-detail {
  background: #f5f1ea;
  padding: 80px 5vw;
}

.public-profile-card {
  max-width: 1040px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 28px;
  background: white;
  border: 1px solid #e3ded7;
  box-shadow: 0 25px 80px rgba(19,32,52,.12);
}

.public-profile-cover {
  height: 270px;
  background: linear-gradient(120deg,var(--profile-accent),#958dff 65%,#0f2442);
  background-size: cover;
  background-position: center;
}

.public-profile-body {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 30px;
  padding: 0 55px 55px;
}

.public-profile-avatar {
  width: 160px;
  height: 160px;
  margin-top: -70px;
  border: 8px solid white;
  border-radius: 48px;
  font-size: 48px;
}

.public-profile-body > div { padding-top: 28px; }
.public-profile-body small { color: #55b9d4; letter-spacing: .14em; font-size: 8px; }
.public-profile-body h1 { font-size: 42px; margin: 8px 0; }
.public-profile-body h2 { font-size: 15px; color: #627187; font-weight: 600; }
.public-profile-body p { font-size: 11px; line-height: 1.9; color: #536177; }
.public-profile-body dl { display: flex; gap: 12px; margin: 24px 0; }
.public-profile-body dl div { padding: 12px 16px; border-radius: 12px; background: #f4f6f8; }
.public-profile-body dt { font-size: 7px; color: #8994a1; }
.public-profile-body dd { margin: 4px 0 0; font-size: 9px; font-weight: 700; }

.teachers-hero {
  min-height: 340px;
  border-radius: 28px;
  padding: 65px;
  color: white;
  background: radial-gradient(circle at 75% 20%,rgba(116,224,249,.32),transparent 34%),linear-gradient(135deg,#071428,#172c49);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.teachers-hero small { color: #71ddf7; letter-spacing: .22em; }
.teachers-hero h1 { max-width: 850px; font-size: 48px; line-height: 1.14; margin: 16px 0; }
.teachers-hero p { max-width: 650px; font-size: 11px; line-height: 1.8; color: rgba(255,255,255,.6); }

.teacher-card-grid {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 14px;
}

.teacher-card {
  min-height: 280px;
  padding: 24px;
  border: 1px solid #e1ddd6;
  border-radius: 19px;
  background: white;
  color: #102039;
  transition: transform .2s ease, box-shadow .2s ease;
}

.teacher-card:hover { transform: translateY(-4px); box-shadow: 0 20px 45px rgba(20,34,55,.1); }
.teacher-card-avatar { width: 70px; height: 70px; border-radius: 22px; margin-bottom: 22px; font-size: 22px; }
.teacher-card > small { color: #55b7d2; font-size: 7px; letter-spacing: .14em; }
.teacher-card h2,.teacher-card h3 { font-size: 24px; margin: 8px 0; }
.teacher-card p { min-height: 54px; font-size: 9px; line-height: 1.75; color: #677486; }
.teacher-card ul { padding: 12px 0; margin: 0; border-top: 1px solid #edf0f2; list-style: none; }
.teacher-card li { display: flex; align-items: center; gap: 7px; font-size: 8px; margin: 7px 0; }
.teacher-card li .icon { width: 13px; color: #50b7d3; }
.teacher-card > b { display: flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 8px; }
.teacher-card > b .icon { width: 13px; }

.teacher-detail-intro {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(330px,.8fr) 1.2fr;
  gap: 70px;
  align-items: center;
}

.teacher-detail-photo { min-height: 650px; overflow: hidden; border-radius: 28px; background: #e9e4dd; }
.teacher-detail-photo img { width: 100%; height: 650px; object-fit: cover; }
.teacher-detail-intro article > small { color: #55b5d0; letter-spacing: .18em; }
.teacher-detail-intro h1 { font-size: 58px; margin: 12px 0; }
.teacher-detail-intro article > p { font-size: 12px; line-height: 2; color: #57657a; }
.teacher-detail-intro ul { list-style: none; padding: 16px 0; }
.teacher-detail-intro li { display: flex; gap: 9px; align-items: center; font-size: 10px; margin: 12px 0; }
.teacher-detail-intro li .icon { width: 17px; color: #4eb6d2; }
.teacher-detail-intro article > div { display: flex; align-items: center; gap: 18px; margin-top: 25px; }

.teacher-editor-grid,
.admin-detail-grid,
.admin-model-detail-grid,
.bgm-admin-grid {
  display: grid;
  grid-template-columns: minmax(0,1.35fr) minmax(300px,.65fr);
  gap: 14px;
  margin-bottom: 14px;
  align-items: start;
}

.teacher-editor-preview { position: sticky; top: 20px; overflow: hidden; }
.teacher-editor-preview img { width: calc(100% + 48px); height: 360px; margin: -24px -24px 22px; object-fit: cover; }
.teacher-editor-preview small { color: #53b6d1; letter-spacing: .15em; }
.teacher-editor-preview h2 { font-size: 28px; margin: 8px 0; }
.teacher-editor-preview p { color: #667387; font-size: 9px; line-height: 1.8; }

.admin-module-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 10px;
  margin: 0 0 16px;
}

.admin-module-grid > a {
  min-height: 150px;
  padding: 18px;
  border: 1px solid #dfe4e8;
  border-radius: 15px;
  background: white;
  display: grid;
  grid-template-columns: 34px 1fr 18px;
  gap: 10px;
  align-items: start;
}

.admin-module-grid > a > .icon:first-child { width: 28px; color: #52b9d4; }
.admin-module-grid > a > .icon:last-child { width: 16px; align-self: center; }
.admin-module-grid small { color: #5ab8d1; font-size: 6px; letter-spacing: .14em; }
.admin-module-grid h2 { margin: 7px 0; font-size: 14px; }
.admin-module-grid p { font-size: 8px; line-height: 1.6; color: #788391; }

.admin-filter-panel { padding: 14px; margin-bottom: 12px; }
.admin-filter { display: grid; grid-template-columns: 1fr 150px 170px auto; gap: 8px; }
.admin-filter input,.admin-filter select { border: 1px solid #dfe4e8; border-radius: 9px; padding: 10px; font-size: 8px; }

.admin-content-list > a {
  display: grid;
  grid-template-columns: 46px 1fr 20px;
  gap: 13px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid #edf0f2;
}

.admin-content-list > a:last-child { border-bottom: 0; }
.admin-content-list .forum-avatar { width: 46px; height: 46px; border-radius: 14px; }
.admin-content-list h3 { margin: 6px 0 4px; font-size: 11px; }
.admin-content-list small { font-size: 7px; color: #778392; }
.admin-content-list > a > .icon { width: 16px; }

.admin-topic-copy header { display: flex; align-items: center; gap: 12px; border-bottom: 1px solid #edf0f2; padding-bottom: 16px; }
.admin-topic-copy header > div { display: grid; gap: 4px; }
.admin-topic-copy header small { font-size: 7px; color: #788492; }
.admin-topic-copy > div { padding-top: 20px; font-size: 10px; line-height: 1.9; color: #4e5d71; }

.admin-reply-list > article {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid #edf0f2;
  align-items: start;
}
.admin-reply-list > article:last-child { border-bottom: 0; }
.admin-reply-list header { display: flex; align-items: center; gap: 7px; }
.admin-reply-list header small { margin-left: auto; font-size: 7px; color: #8b96a4; }
.admin-reply-list p { font-size: 9px; line-height: 1.8; color: #536176; }

.admin-model-grid {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 12px;
}
.admin-model-card { border: 1px solid #dfe3e7; border-radius: 17px; overflow: hidden; background: white; }
.admin-model-thumb { height: 175px; color: white; display: grid; place-items: center; position: relative; }
.admin-model-thumb .icon { width: 42px; opacity: .75; }
.admin-model-thumb span { position: absolute; bottom: 12px; left: 12px; background: rgba(0,0,0,.28); border-radius: 20px; padding: 6px 9px; font-size: 7px; }
.admin-model-card > div:last-child { padding: 17px; position: relative; }
.admin-model-owner { width: 30px; height: 30px; border-radius: 9px; float: left; margin-right: 9px; }
.admin-model-card small { font-size: 7px; color: #7c8794; }
.admin-model-card h2 { clear: both; padding-top: 13px; font-size: 16px; }
.admin-model-card p { height: 38px; font-size: 8px; color: #707d8e; }
.admin-model-card footer,.teacher-admin-card footer { background: none; color: #102039; padding: 13px 0 0; border-top: 1px solid #edf0f2; display: flex; gap: 5px; align-items: center; }
.admin-model-card footer b,.teacher-admin-card footer b { margin-left: auto; font-size: 7px; display: flex; align-items: center; gap: 4px; }
.admin-model-card footer .icon,.teacher-admin-card footer .icon { width: 12px; }
.admin-viewer,.admin-no-preview { height: 650px; }
.admin-file-links { display: grid; gap: 7px; margin-top: 16px; }
.admin-file-links a { display: flex; align-items: center; gap: 8px; padding: 11px; border-radius: 10px; background: #f1f5f7; font-size: 8px; word-break: break-all; }
.admin-file-links .icon { width: 15px; }

.teacher-admin-note { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.teacher-admin-note > .icon { width: 28px; color: #51b8d3; }
.teacher-admin-note > div { flex: 1; }
.teacher-admin-note b { font-size: 10px; }
.teacher-admin-note p { margin: 4px 0 0; font-size: 8px; color: #738091; }
.teacher-admin-note a { font-size: 8px; color: #399bb7; }
.teacher-admin-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.teacher-admin-card { min-height: 190px; padding: 22px; border: 1px solid #dfe4e8; border-radius: 17px; background: white; display: grid; grid-template-columns: 76px 1fr; gap: 18px; }
.teacher-admin-card h2 { font-size: 21px; margin: 7px 0; }
.teacher-admin-card p { font-size: 8px; line-height: 1.7; color: #6b7889; min-height: 42px; }

.bgm-track-list > article {
  display: grid;
  grid-template-columns: 38px minmax(180px,1fr) auto minmax(220px,.8fr) auto;
  gap: 12px;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid #edf0f2;
}
.bgm-track-list > article:last-child { border: 0; }
.bgm-track-list > article > span:first-child { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; color: #4db6d2; background: #edf9fc; }
.bgm-track-list > article > span .icon { width: 17px; }
.bgm-track-list > article > div { display: grid; }
.bgm-track-list b { font-size: 9px; }
.bgm-track-list small { font-size: 7px; color: #7d8896; margin-top: 4px; }
.bgm-track-list audio { width: 100%; height: 32px; }

.page-head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.class-dot { width: 12px; height: 12px; border-radius: 50%; display: block; margin-bottom: 20px; box-shadow: 0 0 22px currentColor; }
.feature-grid article > small { display: block; color: rgba(255,255,255,.58); margin-bottom: 7px; font-size: 7px; }
.feature-grid article > a { display: inline-flex; align-items: center; gap: 5px; margin-top: 12px; color: #79def5; font-size: 8px; }
.feature-grid article > a .icon { width: 13px; }
.light-link { color: #80e3f7 !important; }

.compact-hero { min-height: 360px; padding: 95px 8vw 60px; background: radial-gradient(circle at 80% 20%,rgba(100,221,246,.25),transparent 34%),linear-gradient(135deg,#08172c,#172544); color: white; }
.compact-hero h1 { max-width: 760px; font-size: clamp(38px,5vw,70px); margin: 12px 0 16px; }
.compact-hero p { max-width: 680px; color: rgba(255,255,255,.67); line-height: 1.9; }
.class-catalog { padding-top: 55px; }
.class-card-grid,.admin-class-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.class-card { min-height: 420px; padding: 25px; border: 1px solid #dfe4e8; border-top: 5px solid var(--class-accent); border-radius: 19px; background: white; display: flex; flex-direction: column; }
.class-card.preview { background: linear-gradient(160deg,#fff,#f3f0ff); }
.class-card header,.admin-class-card header { display: flex; align-items: center; justify-content: space-between; }
.class-card > small { margin-top: 55px; color: #48a8c2; letter-spacing: .16em; font-size: 7px; }
.class-card h2 { font-size: 28px; margin: 9px 0 12px; }
.class-card > p { min-height: 65px; color: #687588; font-size: 9px; line-height: 1.8; }
.class-card dl { display: grid; gap: 9px; margin: 24px 0; }
.class-card dl div { display: grid; grid-template-columns: 55px 1fr; gap: 10px; font-size: 8px; }
.class-card dt { color: #9aa3ad; }
.class-card dd { margin: 0; color: #334156; }
.class-card footer { margin-top: auto; padding: 0; background: none; }
.class-detail-hero { min-height: 540px; padding: 90px 9vw; background: radial-gradient(circle at 82% 18%,color-mix(in srgb,var(--class-accent) 42%,transparent),transparent 30%),#08162b; color: white; display: grid; grid-template-columns: 1fr 280px; align-items: end; gap: 80px; }
.class-detail-hero > div > a { color: rgba(255,255,255,.65); font-size: 8px; }
.class-detail-hero > div > small { display: block; margin-top: 70px; color: var(--class-accent); letter-spacing: .2em; }
.class-detail-hero h1 { font-size: clamp(52px,7vw,90px); margin: 12px 0 18px; }
.class-detail-hero p { max-width: 760px; color: rgba(255,255,255,.7); line-height: 2; }
.class-detail-hero aside { padding: 25px; border: 1px solid rgba(255,255,255,.14); border-radius: 18px; background: rgba(255,255,255,.06); display: grid; gap: 8px; }
.class-detail-hero aside b { color: var(--class-accent); font-size: 15px; }
.class-detail-hero aside span { font-size: 8px; color: rgba(255,255,255,.65); }
.class-actions { display: flex; align-items: center; gap: 16px; margin-top: 25px; flex-wrap: wrap; }
.class-actions > span { font-size: 8px; color: rgba(255,255,255,.58); }
.class-teachers-section,.teacher-works-section { padding: 70px 8vw; }
.class-mini-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.class-mini-grid a { min-height: 170px; padding: 22px; border: 1px solid #dfe4e8; border-top: 4px solid var(--class-accent); border-radius: 16px; background: white; }
.class-mini-grid small { color: #4ca9c2; font-size: 7px; }
.class-mini-grid h3 { font-size: 20px; margin: 10px 0; }
.class-mini-grid p { color: #707d8d; font-size: 8px; line-height: 1.7; }

.sponsor-survey,.teacher-picker { border: 1px solid #dce3e8; border-radius: 18px; padding: 20px; }
.sponsor-survey legend,.teacher-picker legend { padding: 0 8px; font-size: 10px; font-weight: 800; }
.sponsor-survey legend b { color: #e1537c; font-size: 7px; }
.sponsor-survey > p { margin: 0 0 15px; padding: 13px 15px; border-radius: 12px; background: linear-gradient(135deg,#f4f8fa,#f8fafb); color: #657285; font-size: 9px; line-height: 1.75; }
.sponsor-options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-stack .sponsor-option { position: relative; display: flex; grid-template-columns: none; align-items: center; gap: 13px; min-height: 82px; padding: 15px 16px; border: 1px solid #dce4ea; border-radius: 15px; background: white; cursor: pointer; transition: border-color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease; }
.form-stack .sponsor-option:hover { transform: translateY(-2px); border-color: #8bd4e8; box-shadow: 0 10px 24px rgba(47,113,139,.08); }
.form-stack .sponsor-option:has(input:checked) { border-color: #55bedb; background: linear-gradient(135deg,#eefbfe,#f5f8ff); box-shadow: 0 0 0 3px rgba(85,190,219,.1); }
.form-stack .sponsor-option input { flex: none; width: 19px; height: 19px; margin: 0; padding: 0; accent-color: #42b6d5; }
.sponsor-option span { display: grid; gap: 5px; min-width: 0; }
.sponsor-option b { color: #20344c; font-size: 11px; }
.sponsor-option small { color: #7a8795; font-size: 8px; font-weight: 400; line-height: 1.55; }

.vrc-bind-panel { margin: 14px 0; }
.vrc-auto-card { margin: 0 0 24px; padding: 20px; border: 1px solid #cfe8ef; border-radius: 16px; background: linear-gradient(135deg,#f4fcfe,#eef7fb); }
.vrc-auto-card.disabled { border-color: #e0e4e8; background: #f6f7f8; }
.vrc-auto-card > p { margin: 0 0 16px; color: #647486; font-size: 9px; line-height: 1.8; }
.vrc-auto-card > small { display: block; margin-top: 13px; color: #7b8998; font-size: 7px; }
.vrc-auto-card .panel-head { margin-bottom: 10px; }
.vrc-auto-card .panel-head h3 { margin: 4px 0 0; font-size: 17px; }
.vrc-bind-grid { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(280px,.8fr); gap: 28px; }
.vrc-bind-grid aside { padding: 24px; border-radius: 15px; background: linear-gradient(150deg,#0b1a31,#172b49); color: white; }
.vrc-bind-grid aside h3 { margin-top: 0; font-size: 17px; }
.vrc-bind-grid aside p { color: rgba(255,255,255,.66); font-size: 9px; line-height: 1.9; }
.vrc-bind-grid aside small { display: block; margin-top: 16px; color: rgba(255,255,255,.48); font-size: 7px; }
.vrc-sync-options { display: flex; gap: 8px; flex-wrap: wrap; }
.vrc-verification-form { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 9px; align-items: end; margin-top: 14px; padding: 14px; border: 1px solid #bfe4ed; border-radius: 13px; background: #f1fbfd; }
.vrc-verification-form label { min-width: 0; }
.vrc-verification-form .button { min-height: 42px; }
.public-vrc-card { margin: 20px 0; padding: 16px; border-left: 4px solid var(--profile-accent); border-radius: 12px; background: #f2f6f8; }
.public-vrc-card small { color: #55acc3; letter-spacing: .16em; }
.public-vrc-card b { display: block; margin-top: 6px; }
.public-vrc-card p { margin: 8px 0; }
.public-vrc-card a { display: inline-flex; gap: 5px; align-items: center; font-size: 8px; color: #338fa9; }
.public-vrc-card .icon { width: 13px; }
.teacher-showcase-option span { display: grid; gap: 3px; }
.teacher-showcase-option small { color: #788493; font-size: 7px; }
.appearance-grid { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(320px,.8fr); gap: 14px; }
.appearance-preview > p { margin: 15px 0 0; color: #778493; font-size: 8px; line-height: 1.7; }
.appearance-banner-preview { min-height: 215px; overflow: hidden; border-radius: 16px; background: #0d1d33; color: white; display: grid; grid-template-columns: 1fr 38%; align-items: center; }
.appearance-banner-preview > div { padding: 28px; }
.appearance-banner-preview small { color: #76dff7; font-size: 7px; letter-spacing: .13em; }
.appearance-banner-preview h3 { margin: 12px 0 8px; font-size: 22px; }
.appearance-banner-preview p { color: rgba(255,255,255,.55); font-size: 8px; line-height: 1.7; }
.appearance-banner-preview img { width: 100%; height: 215px; object-fit: cover; }
.appearance-reset { margin: 13px 0; }
.config-list { display: grid; gap: 7px; margin: 0; }
.config-list div { display: grid; grid-template-columns: minmax(170px,.8fr) 1.2fr; gap: 12px; padding: 10px 12px; border-radius: 10px; background: #f4f7f8; }
.config-list dt { color: #244259; font-family: ui-monospace,SFMono-Regular,Consolas,monospace; font-size: 8px; font-weight: 800; }
.config-list dd { margin: 0; color: #71808f; font-size: 8px; }
.muted { color: #7b8793; font-size: 8px; line-height: 1.7; }
.info-box.warning { margin-top: 10px; background: #fff6e9; color: #7b6545; }
.info-box.warning .icon { color: #d89738; }
.form-stack button:disabled { cursor: not-allowed; filter: grayscale(1); opacity: .48; }

.admin-class-grid { margin-bottom: 18px; }
.admin-class-card { min-height: 260px; padding: 22px; border: 1px solid #dfe4e8; border-top: 5px solid var(--class-accent); border-radius: 18px; background: white; }
.admin-class-card h2 { font-size: 23px; margin: 35px 0 9px; }
.admin-class-card > p { min-height: 52px; color: #6c798a; font-size: 8px; line-height: 1.7; }
.admin-class-card dl { display: grid; grid-template-columns: repeat(3,1fr); gap: 7px; margin: 18px 0; }
.admin-class-card dl div { padding: 9px; border-radius: 9px; background: #f4f7f8; display: grid; gap: 3px; }
.admin-class-card dt { font-size: 6px; color: #8c97a4; }
.admin-class-card dd { margin: 0; font-size: 10px; font-weight: 800; }
.admin-class-card footer { padding: 13px 0 0; border-top: 1px solid #edf0f2; background: none; color: #2c91ad; font-size: 8px; display: flex; align-items: center; gap: 5px; }
.admin-class-card footer .icon { width: 13px; }
.teacher-picker { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; }
.teacher-picker > label:not(:last-child) { display: flex; align-items: center; gap: 8px; padding: 9px; border: 1px solid #e2e7ea; border-radius: 10px; }
.teacher-picker > label span { display: grid; gap: 3px; }
.teacher-picker > label small { color: #84909c; font-size: 7px; }
.teacher-picker > label:last-child { grid-column: 1 / -1; }

@media (max-width: 1100px) {
  .admin-module-grid { grid-template-columns: 1fr 1fr; }
  .admin-model-grid,.teacher-card-grid { grid-template-columns: 1fr 1fr; }
  .teacher-detail-intro { gap: 35px; }
  .class-card-grid,.admin-class-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .bgm-player { left: 12px; right: 12px; bottom: 12px; width: auto; }
  .bgm-player.closed { left: auto; width: 48px; }
  .profile-settings-grid,.teacher-editor-grid,.admin-detail-grid,.admin-model-detail-grid,.bgm-admin-grid,.teacher-detail-intro,.vrc-bind-grid,.class-detail-hero,.appearance-grid { grid-template-columns: 1fr; }
  .profile-public-page,.teachers-public-page,.teacher-public-detail { padding: 30px 14px 100px; }
  .public-profile-cover { height: 190px; }
  .public-profile-body { grid-template-columns: 1fr; padding: 0 22px 32px; }
  .public-profile-avatar { width: 120px; height: 120px; margin-top: -60px; border-radius: 38px; }
  .public-profile-body > div { padding-top: 0; }
  .public-profile-body h1 { font-size: 34px; }
  .teachers-hero { padding: 35px 25px; min-height: 310px; }
  .teachers-hero h1 { font-size: 35px; }
  .teacher-card-grid,.admin-model-grid,.teacher-admin-grid { grid-template-columns: 1fr; }
  .teacher-detail-photo,.teacher-detail-photo img { min-height: 0; height: 430px; }
  .teacher-detail-intro h1 { font-size: 42px; }
  .teacher-editor-preview { position: static; }
  .admin-module-grid { grid-template-columns: 1fr; }
  .admin-filter { grid-template-columns: 1fr; }
  .admin-reply-list > article { grid-template-columns: 38px 1fr; }
  .admin-reply-list form { grid-column: 2; }
  .bgm-track-list > article { grid-template-columns: 38px 1fr auto; }
  .bgm-track-list audio { grid-column: 2 / -1; }
  .teacher-profile-callout,.teacher-admin-note { align-items: flex-start; flex-direction: column; }
  .class-card-grid,.admin-class-grid,.class-mini-grid { grid-template-columns: 1fr; }
  .vrc-verification-form { grid-template-columns: 1fr; }
  .bgm-footer { align-items: flex-start; }
  .bgm-footer input { width: 78px; }
  .class-detail-hero { padding: 65px 20px; gap: 30px; }
  .class-detail-hero > div > small { margin-top: 45px; }
  .teacher-picker { grid-template-columns: 1fr; }
  .teacher-picker > label:last-child { grid-column: auto; }
  .config-list div { grid-template-columns: 1fr; }
  .sponsor-options { grid-template-columns: 1fr; }
  .appearance-banner-preview { grid-template-columns: 1fr; }
  .appearance-banner-preview img { height: 190px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-ready { opacity: 1 !important; transform: none !important; }
  .brand-mark,.brand-mark:before,.brand-mark:after,.hero-image,.forum-hero > img,.model-hero > img,.final-cta > img { animation: none !important; }
}

/* V1.2.5: multi-teacher homepage and editable site copy */
.home-teacher-showcase { background: #fbfaf7; }
.home-teacher-head { align-items: center; }
.home-teacher-head > div:last-child { display: grid; gap: 20px; justify-items: end; }
.home-teacher-head > div:last-child > p { max-width: 570px; margin: 0; color: #647184; font-size: 11px; line-height: 1.9; }
.carousel-controls { display: flex; align-items: center; gap: 10px; }
.carousel-controls button { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid #dce3e8; border-radius: 50%; background: white; color: #12233b; }
.carousel-controls button:hover { border-color: #61c9e5; color: #329eba; transform: translateY(-1px); }
.carousel-controls button:first-child .icon { transform: rotate(180deg); }
.carousel-controls span { min-width: 54px; text-align: center; font-size: 9px; color: #718093; font-variant-numeric: tabular-nums; }
.home-teacher-track { display: flex; gap: 22px; width: 100%; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; scrollbar-width: none; overscroll-behavior-x: contain; }
.home-teacher-track::-webkit-scrollbar { display: none; }
.home-teacher-slide { flex: 0 0 100%; min-width: 0; min-height: 610px; display: grid; grid-template-columns: minmax(0,.95fr) minmax(0,1.05fr); overflow: hidden; scroll-snap-align: start; scroll-snap-stop: always; border: 1px solid #e3e6e7; border-radius: 30px; background: white; box-shadow: 0 24px 70px rgba(21,36,57,.09); }
.home-teacher-photo { min-width: 0; min-height: 610px; overflow: hidden; background: #dfe8ec; }
.home-teacher-photo img { width: 100%; height: 100%; min-height: 610px; object-fit: cover; object-position: center 30%; transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.home-teacher-slide:hover .home-teacher-photo img { transform: scale(1.025); }
.home-teacher-copy { min-width: 0; padding: clamp(42px,6vw,92px); display: flex; flex-direction: column; justify-content: center; }
.home-teacher-copy h3 { margin: 16px 0 20px; font-size: clamp(40px,4.5vw,64px); line-height: 1.08; letter-spacing: -.05em; overflow-wrap: anywhere; }
.home-teacher-copy > p { margin: 0; color: #637084; font-size: 12px; line-height: 1.95; }
.home-teacher-copy ul { display: grid; gap: 12px; margin: 28px 0 34px; padding: 0; list-style: none; }
.home-teacher-copy li { display: flex; align-items: flex-start; gap: 10px; font-size: 10px; line-height: 1.6; }
.home-teacher-copy li .icon { width: 16px; flex: none; color: #48b8d7; }
.home-teacher-copy .teacher-actions { margin-top: auto; flex-wrap: wrap; }

.site-copy-editor { margin-bottom: 18px; }
.site-copy-editor > .panel-head { align-items: flex-start; }
.site-copy-editor > .panel-head p { margin: 7px 0 0; color: #7a8797; font-size: 8px; }
.site-copy-group { display: grid; gap: 14px; padding: 22px; border: 1px solid #e2e7ea; border-radius: 17px; background: linear-gradient(145deg,#fff,#fbfcfd); }
.site-copy-group h3 { margin: 0 0 2px; padding-bottom: 12px; border-bottom: 1px solid #edf0f2; font-size: 14px; }
.site-copy-two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.role-editor { align-items: stretch; gap: 7px; flex-wrap: wrap; justify-content: flex-end; }
.role-editor select { border-radius: 8px !important; min-width: 110px; }
.role-editor button { border-radius: 8px !important; padding: 0 13px; min-height: 36px; }
.teacher-capability { display: flex; align-items: center; gap: 7px; min-height: 36px; padding: 0 11px; border: 1px solid #dce3e8; border-radius: 8px; background: #f7fbfc; font-size: 8px; color: #46576a; }
.teacher-capability input { width: 15px; height: 15px; margin: 0; }
.admin-users em { width: max-content; margin-top: 6px; padding: 4px 7px; border-radius: 999px; background: #e7f8fc; color: #278ba8; font-size: 7px; font-style: normal; }

/* V1.2.6: local model pipeline, resource permissions and upload telemetry */
.page-head-actions { display: flex; align-items: center; justify-content: flex-end; gap: 9px; flex-wrap: wrap; }
.model-resource-fields { display: grid; grid-template-columns: minmax(150px,.65fr) minmax(240px,1fr) minmax(280px,1.2fr); gap: 15px; align-items: center; padding: 18px; border: 1px solid #dfe7ec; border-radius: 15px; background: linear-gradient(135deg,#f8fcfd,#f4f7fb); }
.model-resource-fields > div small { color: #4fb2cf; font-size: 7px; letter-spacing: .16em; }
.model-resource-fields h3 { margin: 5px 0 0; font-size: 14px; }
.model-resource-fields .checkbox { padding: 13px; border-radius: 12px; background: white; border: 1px solid #e5e9ed; }
.model-resource-fields .checkbox b,.model-resource-fields .checkbox small { display: block; }
.model-resource-fields .checkbox small { margin-top: 4px; color: #8390a0; font-weight: 400; }
.model-resource-links { display: grid; gap: 8px; margin-top: 18px; }
.model-resource-links > a { display: grid; grid-template-columns: 32px 1fr; gap: 10px; align-items: center; padding: 12px; border: 1px solid #e2e7eb; border-radius: 11px; background: #f7fafb; color: #172840; }
.model-resource-links > a:hover { border-color: #70cde7; background: #eefafd; }
.model-resource-links .icon { width: 19px; color: #43afcd; }
.model-resource-links span { display: grid; min-width: 0; }
.model-resource-links b { font-size: 9px; }
.model-resource-links small { margin-top: 3px; overflow: hidden; color: #7b8999; font-size: 7px; text-overflow: ellipsis; white-space: nowrap; }
.model-download-note { margin-top: 18px; padding: 12px; border-radius: 10px; background: #f3f5f7; color: #7d8997; font-size: 8px; text-align: center; }
.viewer-canvas { position: relative; }
.viewer-toolbar small.is-error { color: #ff9da7; }
.viewer-error { position: absolute; z-index: 3; inset: 0; display: grid; place-content: center; justify-items: center; padding: 30px; background: radial-gradient(circle at center,rgba(31,57,88,.95),rgba(7,18,34,.98)); color: white; text-align: center; }
.viewer-error strong { font-size: 20px; }
.viewer-error p { max-width: 520px; margin: 12px auto; color: rgba(255,255,255,.7); font-size: 10px; line-height: 1.8; }
.viewer-error details { max-width: 560px; margin: 2px auto 17px; color: rgba(255,255,255,.48); font-size: 8px; }
.viewer-error code { display: block; max-height: 100px; margin-top: 8px; overflow: auto; padding: 10px; border-radius: 8px; background: rgba(0,0,0,.25); text-align: left; word-break: break-word; }
.viewer-error button { border: 1px solid rgba(255,255,255,.25); border-radius: 9px; padding: 10px 15px; background: #73dff7; color: #0b1c32; font-size: 9px; font-weight: 800; }
.upload-progress-overlay { position: fixed; z-index: 10000; inset: 0; display: grid; place-items: center; padding: 20px; background: rgba(4,12,23,.74); backdrop-filter: blur(12px); }
.upload-progress-card { width: min(620px,100%); padding: 27px; border: 1px solid rgba(130,225,249,.3); border-radius: 22px; background: #0d1d32; box-shadow: 0 35px 100px rgba(0,0,0,.4); color: white; }
.upload-progress-card header { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.upload-progress-card header small { color: #66d9f4; font-size: 7px; letter-spacing: .17em; }
.upload-progress-card h2 { margin: 7px 0 0; font-size: 24px; }
.upload-progress-card header strong { color: #7fe6ff; font-size: 34px; font-variant-numeric: tabular-nums; }
.upload-progress-track { height: 12px; margin: 24px 0 13px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.09); }
.upload-progress-track i { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg,#5fd8f3,#aaa0ff); box-shadow: 0 0 22px rgba(95,216,243,.55); transition: width .15s linear; }
.upload-progress-stats { display: grid; grid-template-columns: 1fr auto auto; gap: 18px; color: rgba(255,255,255,.62); font-size: 9px; font-variant-numeric: tabular-nums; }
.upload-progress-card > p { margin: 19px 0 14px; color: rgba(255,255,255,.74); font-size: 9px; line-height: 1.7; }
.upload-progress-card > button { border: 1px solid rgba(255,255,255,.16); border-radius: 9px; padding: 9px 13px; background: rgba(255,255,255,.06); color: white; font-size: 8px; }
.upload-progress-overlay.is-error .upload-progress-track i { background: #f07683; }
.upload-progress-overlay.is-error .upload-progress-card header strong { color: #ff9aa5; }

@media (max-width: 900px) {
  .home-teacher-slide { min-height: 0; grid-template-columns: 1fr; }
  .home-teacher-photo,.home-teacher-photo img { min-height: 0; height: 460px; }
  .home-teacher-copy { padding: 44px; }
}

@media (max-width: 760px) {
  .home-teacher-head > div:last-child { justify-items: start; }
  .home-teacher-slide { border-radius: 22px; }
  .home-teacher-photo,.home-teacher-photo img { height: 360px; }
  .home-teacher-copy { padding: 30px 24px 34px; }
  .home-teacher-copy h3 { font-size: 38px; }
  .home-teacher-copy .teacher-actions { align-items: stretch; flex-direction: column; }
  .site-copy-two { grid-template-columns: 1fr; }
  .site-copy-group { padding: 16px; }
  .role-editor { width: 100%; justify-content: flex-start; }
  .page-head-actions { width: 100%; justify-content: flex-start; }
  .model-resource-fields { grid-template-columns: 1fr; }
  .upload-progress-card { padding: 21px; }
  .upload-progress-card header { align-items: flex-start; }
  .upload-progress-card h2 { font-size: 19px; }
  .upload-progress-card header strong { font-size: 26px; }
  .upload-progress-stats { grid-template-columns: 1fr; gap: 5px; }
}

/* V1.2.7: direct-link previews, model covers and live scene controls */
.model-preview-card.has-cover,.admin-model-thumb.has-cover { overflow: hidden; }
.model-preview-card > img,.admin-model-thumb > img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.model-card:hover .model-preview-card > img,.admin-model-card:hover .admin-model-thumb > img { transform: scale(1.035); }
.model-preview-card.has-cover::after,.admin-model-thumb.has-cover::after { content: ""; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent,rgba(2,9,18,.5)); pointer-events: none; }
.model-preview-card span,.admin-model-thumb span { z-index: 1; backdrop-filter: blur(6px); }
.model-info-cover { display: block; width: calc(100% + 56px); height: 190px; margin: -28px -28px 24px; border-radius: 19px 19px 0 0; object-fit: cover; }
.admin-model-cover-preview { display: block; width: 100%; max-height: 260px; margin-top: 14px; border: 1px solid #dfe4e8; border-radius: 15px; object-fit: cover; }
.preview-source-fields { border-color: #bfe8f3; background: linear-gradient(135deg,#f0fbfd,#f6f4ff); }
.model-resource-fields label > small { display: block; margin-top: 6px; color: #7c8998; font-size: 7px; line-height: 1.6; }
.cover-resource-fields .file-drop { min-height: 76px; padding: 13px; }
.viewer { grid-template-rows: minmax(72px,auto) 1fr 36px; }
.viewer-toolbar { gap: 12px; padding-block: 9px; }
.viewer-toolbar > div { min-width: 0; }
.viewer-toolbar b,.viewer-toolbar small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.viewer-toolbar nav { flex-wrap: wrap; justify-content: flex-end; }
.viewer-toolbar button.is-active { border-color: rgba(112,226,255,.55); background: rgba(84,205,234,.18); color: #8ce9ff; }
.live-viewer-settings output { margin-left: 4px; color: #279ebd; font-size: 8px; font-weight: 800; font-variant-numeric: tabular-nums; }
.form-panel .panel-head p { max-width: 640px; margin: 7px 0 0; color: #7b8897; font-size: 8px; line-height: 1.6; }

@media (max-width: 760px) {
  .viewer { grid-template-rows: minmax(122px,auto) 1fr 36px; }
  .viewer-toolbar { align-items: stretch; flex-direction: column; }
  .viewer-toolbar nav { display: grid; grid-template-columns: repeat(3,1fr); }
  .viewer-toolbar button { padding: 8px 5px; }
  .model-info-cover { height: 160px; }
}

/* V1.2.8: model likes, comments and favorites */
.model-gallery-tabs { display: flex; gap: 8px; margin: -12px 0 26px; }
.model-gallery-tabs a { display: inline-flex; align-items: center; gap: 7px; border: 1px solid #dde4e9; border-radius: 999px; padding: 10px 15px; background: rgba(255,255,255,.72); color: #5e6e81; font-size: 9px; font-weight: 800; }
.model-gallery-tabs a.active { border-color: #7ad9ef; background: #0f223d; color: white; box-shadow: 0 9px 24px rgba(15,34,61,.14); }
.model-gallery-tabs .icon { width: 15px; }
.model-social-stats { display: inline-flex; align-items: center; gap: 10px; margin-left: auto; color: #768597; font-size: 8px; font-weight: 700; }
.model-social-stats > span { display: inline-flex; align-items: center; gap: 3px; white-space: nowrap; }
.model-social-stats .icon { width: 13px; height: 13px; }
.model-card footer { gap: 10px; }
.model-card footer > b { margin-left: 0; }
.model-community-bar { display: grid; grid-template-columns: minmax(190px,1fr) auto auto; align-items: center; gap: 28px; margin: 26px 4vw 0; padding: 25px 28px; border: 1px solid rgba(20,52,82,.1); border-radius: 20px; background: linear-gradient(135deg,rgba(255,255,255,.98),rgba(239,249,252,.94)); box-shadow: 0 18px 50px rgba(16,36,60,.08); }
.model-community-bar > div:first-child small { color: #55bcd6; font-size: 7px; letter-spacing: .2em; }
.model-community-bar h2 { margin: 5px 0 0; color: #11243d; font-size: 22px; }
.model-community-counts { display: flex; gap: 22px; }
.model-community-counts > span { display: grid; grid-template-columns: auto auto; align-items: center; column-gap: 6px; color: #152941; }
.model-community-counts .icon { grid-row: 1 / 3; width: 21px; color: #56c3dc; }
.model-community-counts b { font-size: 18px; }
.model-community-counts small { color: #8290a0; font-size: 7px; }
.model-community-actions { display: flex; gap: 9px; }
.model-community-actions button { display: inline-flex; align-items: center; gap: 7px; border: 1px solid #d9e2e8; border-radius: 11px; padding: 11px 15px; background: white; color: #273c54; font-size: 9px; font-weight: 800; cursor: pointer; }
.model-community-actions button.active { border-color: #67cee6; background: #10243f; color: #7de6ff; }
.model-community-actions .icon { width: 17px; }
.model-comments-section { margin-top: 24px; }
.model-comment-form { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 14px; margin-bottom: 22px; padding: 18px; border: 1px solid #e1e6ea; border-radius: 15px; background: white; }
.model-comment-form label { color: #526276; font-size: 8px; font-weight: 800; }
.model-comment-form textarea { display: block; width: 100%; min-height: 90px; margin-top: 8px; resize: vertical; }
.model-comment-login { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 20px; padding: 18px; border-radius: 14px; background: #eef5f8; }
.model-comment-login p { margin: 0; color: #607186; font-size: 9px; }
.model-comment-list { display: grid; gap: 10px; }
.model-comment-list > article { display: grid; grid-template-columns: 42px 1fr; gap: 12px; padding: 17px; border: 1px solid #e2e7eb; border-radius: 15px; background: white; }
.model-comment-avatar { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; }
.model-comment-list header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.model-comment-list header > div { display: grid; gap: 3px; }
.model-comment-list header b { color: #18304c; font-size: 10px; }
.model-comment-list header small { color: #8a96a4; font-size: 7px; }
.model-comment-list p { margin: 10px 0 0; color: #46596f; font-size: 9px; line-height: 1.8; }
.text-button { border: 0; padding: 4px; background: none; color: #9a6a74; font-size: 8px; cursor: pointer; }
.admin-model-comments { margin-top: 18px; }
.admin-model-comment-list { display: grid; gap: 9px; }
.admin-model-comment-list > article { display: grid; grid-template-columns: 42px minmax(0,1fr) auto; align-items: center; gap: 13px; padding: 13px; border: 1px solid #e2e7eb; border-radius: 13px; }
.admin-model-comment-list > article > div { display: grid; gap: 4px; min-width: 0; }
.admin-model-comment-list b { color: #1a304a; font-size: 9px; }
.admin-model-comment-list small { color: #8793a1; font-size: 7px; }
.admin-model-comment-list p { margin: 4px 0 0; color: #4f6074; font-size: 8px; line-height: 1.7; }
.admin-model-comment-list form { display: flex; gap: 6px; }
.admin-model-comment-list select,.admin-model-comment-list button { border: 1px solid #d7dfe5; border-radius: 8px; padding: 8px; background: white; font-size: 8px; }
.admin-model-comment-list button { background: #12253f; color: white; }

@media (max-width: 900px) {
  .model-community-bar { grid-template-columns: 1fr; }
  .model-community-actions { justify-content: flex-start; }
}

@media (max-width: 650px) {
  .model-card footer { align-items: flex-start; flex-wrap: wrap; }
  .model-social-stats { width: 100%; margin-left: 0; }
  .model-community-counts { justify-content: space-between; gap: 10px; }
  .model-comment-form { grid-template-columns: 1fr; }
  .admin-model-comment-list > article { grid-template-columns: 38px 1fr; }
  .admin-model-comment-list form { grid-column: 2; }
}

/* V1.2.9: external model upload walkthrough */
.external-upload-guide { overflow: hidden; border: 1px solid #bfe6f0; border-radius: 18px; background: linear-gradient(135deg,#f2fbfd,#f7f5ff); box-shadow: 0 14px 36px rgba(24,75,105,.07); }
.external-upload-guide > summary { display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 13px; padding: 17px 19px; cursor: pointer; list-style: none; }
.external-upload-guide > summary::-webkit-details-marker { display: none; }
.external-upload-guide > summary > span:first-child { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 13px; background: #10253f; color: #79e3fa; }
.external-upload-guide > summary .icon { width: 19px; }
.external-upload-guide > summary > div { display: grid; gap: 2px; }
.external-upload-guide > summary small { color: #45abc4; font-size: 7px; letter-spacing: .17em; }
.external-upload-guide > summary b { color: #132a46; font-size: 14px; }
.external-upload-guide > summary em { color: #788797; font-size: 8px; font-style: normal; font-weight: 500; }
.external-upload-guide .guide-arrow { color: #6a7b8e; font-size: 19px; transition: transform .25s ease; }
.external-upload-guide[open] .guide-arrow { transform: rotate(180deg); }
.external-upload-body { display: grid; gap: 16px; padding: 2px 19px 19px; }
.external-upload-intro { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px; border-radius: 14px; background: #10253f; color: white; }
.external-upload-intro h3 { margin: 0 0 5px; font-size: 14px; }
.external-upload-intro p { max-width: 620px; margin: 0; color: rgba(255,255,255,.65); font-size: 8px; line-height: 1.65; }
.external-upload-intro .button { flex: 0 0 auto; background: #71ddf4; color: #10243e; }
.external-upload-account { display: grid; grid-template-columns: auto auto auto 1fr; align-items: center; gap: 12px; padding: 13px 16px; border: 1px dashed #a7d8e5; border-radius: 13px; background: rgba(255,255,255,.72); }
.external-upload-account > span { color: #243b54; font-size: 9px; font-weight: 900; }
.external-upload-account > div { display: flex; align-items: center; gap: 6px; }
.external-upload-account small { color: #82909f; font-size: 7px; }
.external-upload-account code,.external-upload-body li code,.external-upload-warning code { border-radius: 6px; padding: 3px 7px; background: #e6f4f8; color: #156c84; font-size: 9px; font-weight: 900; }
.external-upload-account p { margin: 0; color: #8b6470; font-size: 7px; line-height: 1.55; text-align: right; }
.external-upload-body ol { display: grid; grid-template-columns: repeat(5,1fr); gap: 8px; margin: 0; padding: 0; list-style: none; counter-reset: upload-step; }
.external-upload-body li { position: relative; min-height: 118px; padding: 35px 13px 13px; border: 1px solid #dfe7eb; border-radius: 13px; background: white; counter-increment: upload-step; }
.external-upload-body li::before { position: absolute; top: 12px; left: 13px; content: "0" counter(upload-step); color: #55bdd5; font-size: 8px; font-weight: 900; }
.external-upload-body li b { display: block; margin-bottom: 6px; color: #1d334c; font-size: 9px; }
.external-upload-body li span { color: #728193; font-size: 7px; line-height: 1.65; }
.external-upload-help { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 18px; padding: 15px 17px; border: 1px solid #cfd9f5; border-radius: 13px; background: linear-gradient(135deg,#f4f5ff,#eefaff); }
.external-upload-help > div:first-child { display: grid; gap: 4px; }
.external-upload-help small { color: #6d7bc0; font-size: 7px; letter-spacing: .16em; }
.external-upload-help b { color: #1e3150; font-size: 11px; }
.external-upload-help p { margin: 0; color: #6d7c90; font-size: 8px; line-height: 1.65; }
.external-upload-help > div:last-child { display: grid; min-width: 190px; gap: 5px; padding: 12px 16px; border-radius: 11px; background: #10253f; color: white; text-align: center; }
.external-upload-help > div:last-child span { color: rgba(255,255,255,.58); font-size: 7px; }
.external-upload-help strong { color: #7de6fb; font-size: 14px; letter-spacing: .03em; }
.external-upload-warning { display: grid; grid-template-columns: 23px 1fr; gap: 10px; padding: 13px 15px; border: 1px solid #f0d7a8; border-radius: 12px; background: #fff9ed; color: #80653a; }
.external-upload-warning .icon { width: 19px; }
.external-upload-warning p { margin: 0; font-size: 8px; line-height: 1.7; }

@media (max-width: 980px) {
  .external-upload-body ol { grid-template-columns: repeat(2,1fr); }
  .external-upload-account { grid-template-columns: auto auto auto; }
  .external-upload-account p { grid-column: 1 / -1; text-align: left; }
}

@media (max-width: 650px) {
  .external-upload-intro { align-items: stretch; flex-direction: column; }
  .external-upload-account { grid-template-columns: 1fr 1fr; }
  .external-upload-account > span,.external-upload-account p { grid-column: 1 / -1; }
  .external-upload-body ol { grid-template-columns: 1fr; }
  .external-upload-body li { min-height: 0; }
  .external-upload-help { grid-template-columns: 1fr; }
  .external-upload-help > div:last-child { min-width: 0; text-align: left; }
}