/* ==========================================================================
   高老师个人站 · 组件库 v2（高端动效方向）
   依赖 tokens.css ；最后更新：2026-10-01
   ========================================================================== */

/* ==========================================================================
   1. 导航（玻璃拟态 · 滚动固化 · 移动抽屉）
   ========================================================================== */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--h-nav);
  display: flex;
  align-items: center;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s var(--ease);
}
.nav__inner {
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: 0 var(--sp-5);
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}
.nav__logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav__logo img { height: 34px; width: auto; }
.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-left: auto;
}
.nav__link {
  position: relative;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--c-text-inv-mute);
  padding: 6px 2px;
  transition: color var(--dur) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--grad-text-amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease-expo);
}
.nav__link:hover, .nav__link.is-active { color: #fff; }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }

/* 浅色页（非 hero 吸顶态） */
.nav--solid, .nav.is-scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(22, 50, 79, .08), 0 8px 24px rgba(22, 50, 79, .06);
}
.nav--solid .nav__link, .nav.is-scrolled .nav__link { color: var(--c-text-mid); }
.nav--solid .nav__link:hover, .nav--solid .nav__link.is-active,
.nav.is-scrolled .nav__link:hover, .nav.is-scrolled .nav__link.is-active { color: var(--c-ink); }

.nav__cta { margin-left: var(--sp-2); padding: 9px 22px; font-size: 14px; }

.nav__toggle {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px;
  border: 0; background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav__toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--c-text-inv);
  border-radius: 2px;
  transition: transform .3s var(--ease-expo), opacity .2s;
}
.nav--solid .nav__toggle span, .nav.is-scrolled .nav__toggle span { background: var(--c-ink); }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav__toggle { display: flex; }
  .nav__cta { display: none; }
  .nav__menu {
    position: fixed;
    top: var(--h-nav); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    box-shadow: 0 20px 40px rgba(10, 27, 46, .14);
    padding: var(--sp-3) var(--sp-5) var(--sp-5);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform .3s var(--ease-expo), opacity .3s var(--ease), visibility .3s;
  }
  .nav__menu.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__link { color: var(--c-text); padding: 13px 4px; font-size: 15.5px; border-bottom: .5px solid var(--c-line); }
  .nav__link:last-child { border-bottom: 0; }
  .nav__link::after { display: none; }
  .nav__menu .btn { margin-top: var(--sp-4); }
}

/* ==========================================================================
   2. 首页 Hero（满屏照片 + 深墨遮罩 + 光晕网格 + 滚动提示）
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  color: var(--c-text-inv);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg, .hero__bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: -3;
}
.hero__bg img { transform: scale(1.06); transition: transform 2.4s var(--ease-expo); }
.hero.is-loaded .hero__bg img { transform: scale(1); }
/* 桌面横图 / 手机竖图切换 */
.hero__bg--mobile { display: none; }

.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 22% 30%, rgba(24,95,165,.34), transparent 60%),
    radial-gradient(ellipse 55% 45% at 82% 78%, rgba(245,158,11,.16), transparent 62%),
    linear-gradient(180deg, rgba(10,27,46,.62) 0%, rgba(14,34,56,.68) 55%, rgba(10,27,46,.85) 100%);
  z-index: -2;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(245,243,238,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,243,238,.05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.hero__inner { padding: calc(var(--h-nav) + var(--sp-8)) 0 var(--sp-9); max-width: 860px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 7px 16px;
  border: 1px solid rgba(245,243,238,.28);
  border-radius: var(--r-pill);
  background: rgba(245,243,238,.07);
  backdrop-filter: blur(8px);
  font-size: var(--fs-sm);
  letter-spacing: .12em;
  color: rgba(245,243,238,.92);
}
.hero__eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-amber-glow);
  box-shadow: 0 0 12px 2px var(--glow-amber);
  animation: pulse-dot 2.6s ease-in-out infinite;
}
@keyframes pulse-dot { 50% { opacity: .45; } }

.hero__title {
  margin-top: var(--sp-5);
  font-size: var(--fs-display);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .01em;
  color: #fff;
  text-wrap: pretty;
  text-shadow: 0 2px 24px rgba(10, 27, 46, .45);
}
.hero__title em {
  font-style: normal;
  background: var(--grad-text-amber);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  margin-top: var(--sp-5);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--c-text-inv-mute);
  max-width: 620px;
}
.hero__sub strong { color: var(--c-amber-glow); font-weight: 600; }

.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-4); margin-top: var(--sp-7); }

.hero__foot {
  margin-top: var(--sp-8);
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(245,243,238,.16);
  font-size: var(--fs-sm);
  letter-spacing: .06em;
  color: var(--c-text-inv-mute);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-4);
}
.hero__foot span { display: inline-flex; align-items: center; gap: 6px; }
.hero__foot i {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--c-amber-glow); opacity: .8;
}

/* 滚动提示 */
.hero__scroll {
  position: absolute;
  left: 50%; bottom: 26px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  gap: 6px;
  color: var(--c-text-inv-mute);
  font-size: 11px;
  letter-spacing: .3em;
}
.hero__scroll::after {
  content: "";
  width: 1px; height: 42px;
  background: linear-gradient(to bottom, var(--c-amber-glow), transparent);
  animation: scroll-cue 2s var(--ease-expo) infinite;
  transform-origin: top;
}
@keyframes scroll-cue { 0% { transform: scaleY(0); } 45% { transform: scaleY(1); } 100% { transform: scaleY(1) translateY(14px); opacity: 0; } }

@media (max-width: 768px) {
  .hero__bg--desktop { display: none; }
  .hero__bg--mobile { display: block; }
  .hero__inner { padding-top: calc(var(--h-nav) + var(--sp-7)); }
  .hero__actions .btn { flex: 1 1 auto; }
}

/* ==========================================================================
   3. 子页页头（深墨 + 光晕 + 网格）
   ========================================================================== */

.page-hero {
  position: relative;
  background: var(--grad-hero);
  color: var(--c-text-inv);
  padding: calc(var(--h-nav) + var(--sp-8)) 0 var(--sp-8);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 18% 20%, var(--glow-indigo), transparent 62%),
    radial-gradient(ellipse 40% 50% at 88% 80%, var(--glow-amber-soft), transparent 60%);
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(245,243,238,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,243,238,.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 80% at 30% 20%, black 25%, transparent 72%);
  pointer-events: none;
}
.page-hero > .wrap { position: relative; z-index: 1; }
.page-hero__eyebrow {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--c-amber-glow);
  margin-bottom: var(--sp-3);
}
.page-hero__title { font-size: var(--fs-h1); color: #fff; }
.page-hero__desc {
  margin: var(--sp-4) 0 0;
  max-width: 640px;
  color: var(--c-text-inv-mute);
  font-size: 15.5px;
}
.page-hero__meta {
  display: flex; flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-6);
  margin-top: var(--sp-6);
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(245,243,238,.14);
  font-size: var(--fs-sm);
  color: var(--c-text-inv-mute);
}
.page-hero__meta strong { color: var(--c-amber-glow); font-family: var(--f-num); font-size: 17px; margin-right: 4px; font-variant-numeric: tabular-nums; }

/* ==========================================================================
   4. 数据条（滚动计数 + 发丝渐变分隔）
   ========================================================================== */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
}
.stat {
  position: relative;
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: calc(var(--sp-5) / -2); top: 18%; bottom: 18%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--c-line-strong), transparent);
}
.stats--dark .stat__num, .stats--dark .stat__unit { color: var(--c-amber-glow); text-shadow: 0 0 24px var(--glow-amber); }
.stats--dark .stat__label { color: var(--c-text-inv-mute); }
.stats--dark .stat + .stat::before {
  background: linear-gradient(to bottom, transparent, rgba(245,243,238,.22), transparent);
}
@media (max-width: 768px) {
  .stats { grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }
  .stat + .stat::before { display: none; }
  .stat { padding: var(--sp-4) var(--sp-2); }
}

/* ==========================================================================
   5. 培训主题卡（首页四卡）
   ========================================================================== */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}
.topic-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--sp-6);
  overflow: hidden;
  isolation: isolate;
}
.topic-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--grad-text-amber);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s var(--ease-expo);
}
.topic-card:hover::before { transform: scaleY(1); }
.topic-card__no {
  font-family: var(--f-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--c-amber);
}
.topic-card__title { margin-top: var(--sp-3); font-size: var(--fs-h3); color: var(--c-ink); }
.topic-card__desc { margin: var(--sp-3) 0 0; color: var(--c-text-mid); font-size: 14.5px; flex: 1; }
.topic-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: .5px solid var(--c-line);
  font-size: var(--fs-sm);
  color: var(--c-text-mute);
}
.topic-card__more {
  display: inline-flex; align-items: center; gap: 5px;
  font-weight: 600;
  color: var(--c-indigo);
  transition: gap var(--dur) var(--ease-expo);
}
.topic-card:hover .topic-card__more { gap: 9px; }
@media (max-width: 768px) { .topics-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   6. 足迹精华（首页：5 分类卡 + 单位名称墙）
   ========================================================================== */

.fp-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-4);
}
.fp-card { padding: var(--sp-5) var(--sp-4); text-align: center; }
.fp-card__num {
  font-family: var(--f-num);
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 700;
  color: var(--c-amber);
  font-variant-numeric: tabular-nums;
}
.fp-card__num small { font-size: 14px; font-weight: 500; }
.fp-card__label { margin-top: 6px; font-size: var(--fs-sm); font-weight: 600; color: var(--c-ink); }
.fp-card__sub { font-size: var(--fs-xs); color: var(--c-text-mute); }

.unit-wall {
  margin-top: var(--sp-6);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.unit-wall__tag {
  padding: 7px 14px;
  background: var(--c-surface);
  border: .5px solid var(--c-line);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  color: var(--c-text-mid);
  transition: all var(--dur) var(--ease);
  cursor: default;
}
.unit-wall__tag:hover {
  border-color: var(--c-indigo);
  color: var(--c-indigo);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(24, 95, 165, .14);
}
.unit-wall__more {
  background: transparent;
  border-style: dashed;
  color: var(--c-amber);
  border-color: var(--c-amber-lt);
  font-weight: 600;
}
@media (max-width: 1024px) { .fp-cards { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .fp-cards { grid-template-columns: repeat(2, 1fr); } }

/* ==========================================================================
   7. 现场预览 / 照片墙（CSS columns 瀑布流 + hover 蒙层）
   ========================================================================== */

.masonry { column-count: 4; column-gap: var(--sp-4); }
.masonry--preview { column-count: 4; }
.masonry__item {
  position: relative;
  margin: 0 0 var(--sp-4);
  border-radius: var(--r-sm);
  overflow: hidden;
  break-inside: avoid;
  cursor: zoom-in;
  background: var(--c-surface-2);
  transform: translateZ(0);
}
.masonry__item img {
  width: 100%;
  transition: transform .6s var(--ease-expo), filter .6s var(--ease);
}
.masonry__item:hover img { transform: scale(1.045); }
.masonry__item::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,27,46,.72) 0%, transparent 45%);
  opacity: 0;
  transition: opacity .4s var(--ease);
}
.masonry__item:hover::after { opacity: 1; }
.masonry__caption {
  position: absolute;
  left: 14px; right: 14px; bottom: 12px;
  z-index: 1;
  color: #fff;
  font-size: var(--fs-sm);
  line-height: 1.5;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .4s var(--ease), transform .4s var(--ease-expo);
  pointer-events: none;
}
.masonry__caption b {
  display: block;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--c-amber-glow);
  margin-bottom: 2px;
}
.masonry__item:hover .masonry__caption { opacity: 1; transform: none; }
@media (max-width: 1024px) { .masonry, .masonry--preview { column-count: 3; } }
@media (max-width: 640px) { .masonry, .masonry--preview { column-count: 2; column-gap: 10px; } .masonry__item { margin-bottom: 10px; } }

/* 筛选 Tab */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--sp-6);
}
.tabs__btn {
  padding: 9px 20px;
  border: .5px solid var(--c-line-strong);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-text-mid);
  font-size: 14px;
  font-family: var(--f-sans);
  cursor: pointer;
  transition: all var(--dur) var(--ease-expo);
}
.tabs__btn b { font-family: var(--f-num); font-weight: 700; margin-left: 4px; color: var(--c-amber); }
.tabs__btn:hover { border-color: var(--c-indigo); color: var(--c-indigo); transform: translateY(-1px); }
.tabs__btn.is-active {
  background: var(--c-ink);
  border-color: var(--c-ink);
  color: #fff;
  box-shadow: 0 6px 18px rgba(22, 50, 79, .26);
}
.tabs__btn.is-active b { color: var(--c-amber-glow); }

/* 灯箱 */
.lightbox {
  position: fixed; inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 27, 46, .88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s var(--ease), visibility .3s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox__stage { max-width: min(92vw, 1280px); max-height: 86vh; position: relative; }
.lightbox__img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--r-sm);
  box-shadow: var(--sh-deep);
  transform: scale(.96);
  transition: transform .35s var(--ease-expo);
  object-fit: contain;
}
.lightbox.is-open .lightbox__img { transform: scale(1); }
.lightbox__caption {
  margin-top: 12px;
  text-align: center;
  color: var(--c-text-inv-mute);
  font-size: var(--fs-sm);
}
.lightbox__caption b { color: var(--c-amber-glow); margin-right: 8px; font-size: 11px; letter-spacing: .16em; }
.lightbox__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px; height: 48px;
  border: 1px solid rgba(245,243,238,.3);
  border-radius: 50%;
  background: rgba(245,243,238,.08);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur) var(--ease);
}
.lightbox__btn:hover { background: rgba(245,243,238,.22); }
.lightbox__btn--prev { left: -64px; }
.lightbox__btn--next { right: -64px; }
.lightbox__close {
  position: fixed;
  top: 20px; right: 24px;
  width: 46px; height: 46px;
  border: 1px solid rgba(245,243,238,.3);
  border-radius: 50%;
  background: rgba(245,243,238,.08);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}
.lightbox__close:hover { background: rgba(245,243,238,.22); }
@media (max-width: 1024px) {
  .lightbox__btn--prev { left: 8px; }
  .lightbox__btn--next { right: 8px; }
}

/* ==========================================================================
   8. 预约转化（流程 + 二维码）
   ========================================================================== */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
  counter-reset: step;
}
.step { position: relative; padding: var(--sp-5) var(--sp-4) var(--sp-5) 0; }
.step__no {
  font-family: var(--f-num);
  font-size: 34px;
  font-weight: 700;
  background: var(--grad-text-amber);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.step__title { margin-top: var(--sp-3); font-size: 16.5px; font-weight: 600; color: inherit; font-family: var(--f-sans); }
.step__desc { margin: 6px 0 0; font-size: var(--fs-sm); color: inherit; opacity: .72; }
.step::after {
  content: "";
  position: absolute;
  top: 20px; right: -14px;
  width: 22px; height: 22px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: rotate(45deg);
  opacity: .25;
}
.step:last-child::after { display: none; }
@media (max-width: 860px) {
  .steps { grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
  .step::after { display: none; }
}

.booking-grid {
  display: grid;
  grid-template-columns: 1.25fr .85fr;
  gap: var(--sp-7);
  align-items: center;
}
@media (max-width: 860px) { .booking-grid { grid-template-columns: 1fr; gap: var(--sp-6); } }

/* 二维码 / 占位符 */
.qr-box {
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  aspect-ratio: 1;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--c-surface);
  border: .5px solid var(--c-line);
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-box img { width: 100%; height: 100%; object-fit: cover; }
.placeholder {
  width: 100%;
  height: 100%;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px dashed var(--c-line-strong);
  border-radius: var(--r-md);
  color: var(--c-text-mute);
  font-size: var(--fs-sm);
  text-align: center;
  padding: var(--sp-5);
  background: repeating-linear-gradient(-45deg, transparent, transparent 10px, rgba(22,50,79,.02) 10px, rgba(22,50,79,.02) 20px);
}
.placeholder svg { opacity: .4; }
.placeholder b { color: var(--c-text-mid); font-weight: 600; }
.placeholder small { font-size: 11px; opacity: .75; }
.section--dark .placeholder { border-color: rgba(245,243,238,.3); color: var(--c-text-inv-mute); background: rgba(245,243,238,.03); }
.section--dark .placeholder b { color: var(--c-text-inv); }

/* ==========================================================================
   9. 资源引流（视频号/抖音/B站）
   ========================================================================== */

.channels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}
.channel {
  padding: var(--sp-6);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.channel__qr {
  width: 132px; height: 132px;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: .5px solid var(--c-line);
  background: var(--c-surface-2);
}
.channel__qr img { width: 100%; height: 100%; object-fit: cover; }
.channel__name { margin-top: var(--sp-4); font-size: 15.5px; font-weight: 600; color: var(--c-ink); font-family: var(--f-sans); }
.channel__id { margin-top: 2px; font-size: var(--fs-sm); color: var(--c-text-mute); font-family: var(--f-num); }
.channel__desc { margin: var(--sp-3) 0 0; font-size: var(--fs-sm); color: var(--c-text-mid); }
@media (max-width: 768px) { .channels { grid-template-columns: 1fr; } }

/* ==========================================================================
   10. CTA 带 + 页脚
   ========================================================================== */

.cta-band {
  position: relative;
  background: var(--grad-hero);
  color: var(--c-text-inv);
  padding: var(--sp-9) 0;
  overflow: hidden;
  text-align: center;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 55% 80% at 20% 100%, var(--glow-indigo), transparent 60%),
    radial-gradient(ellipse 45% 70% at 85% 0%, var(--glow-amber-soft), transparent 60%);
  pointer-events: none;
}
.cta-band > .wrap { position: relative; z-index: 1; }
.cta-band__title { font-size: var(--fs-h2); color: #fff; }
.cta-band__desc { margin: var(--sp-4) auto var(--sp-6); max-width: 560px; color: var(--c-text-inv-mute); }

.footer {
  background: var(--c-ink-night);
  color: var(--c-text-inv-mute);
  padding: var(--sp-8) 0 var(--sp-6);
  font-size: var(--fs-sm);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: var(--sp-7);
}
.footer__brand img { height: 32px; filter: brightness(0) invert(.96); opacity: .92; }
.footer__slogan { margin: var(--sp-4) 0 0; max-width: 300px; line-height: 1.8; }
.footer__title { font-size: 13px; font-weight: 600; letter-spacing: .14em; color: rgba(245,243,238,.85); margin-bottom: var(--sp-4); font-family: var(--f-sans); }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { color: var(--c-text-inv-mute); transition: color var(--dur) var(--ease); }
.footer__links a:hover { color: var(--c-amber-glow); }
.footer__contact { display: flex; flex-direction: column; gap: 10px; }
.footer__contact span { display: flex; align-items: center; gap: 8px; }
.footer__contact svg { flex-shrink: 0; opacity: .6; }
.footer__bottom {
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(245,243,238,.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-3);
  font-size: var(--fs-xs);
  opacity: .55;
}
@media (max-width: 860px) { .footer__grid { grid-template-columns: 1fr; gap: var(--sp-6); } }

/* ==========================================================================
   11. 足迹页（分类统计 + 地域条 + 名录折叠）
   ========================================================================== */

.fp-overview { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--sp-4); }
@media (max-width: 1024px) { .fp-overview { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .fp-overview { grid-template-columns: repeat(2, 1fr); } }

.bars { display: flex; flex-direction: column; gap: var(--sp-4); }
.bar__head { display: flex; justify-content: space-between; font-size: var(--fs-sm); margin-bottom: 6px; }
.bar__head b { color: var(--c-ink); font-weight: 600; }
.bar__head span { font-family: var(--f-num); color: var(--c-amber); font-weight: 700; }
.bar__track { height: 8px; background: var(--c-surface-2); border-radius: var(--r-pill); overflow: hidden; }
.bar__fill {
  height: 100%;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--c-indigo), var(--c-indigo-lt));
  width: 0;
  transition: width 1s var(--ease-expo);
}
.bar__fill--amber { background: linear-gradient(90deg, var(--c-amber), var(--c-amber-glow)); }

.roster { display: flex; flex-direction: column; gap: var(--sp-4); }
.roster__group { overflow: hidden; }
.roster__head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-5) var(--sp-5);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--f-sans);
}
.roster__head:hover { background: var(--c-surface-2); }
.roster__name { font-size: 16px; font-weight: 600; color: var(--c-ink); }
.roster__count {
  margin-left: auto;
  font-family: var(--f-num);
  font-size: var(--fs-sm);
  color: var(--c-amber);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.roster__chev { transition: transform .3s var(--ease-expo); color: var(--c-text-mute); }
.roster__group.is-open .roster__chev { transform: rotate(90deg); }
.roster__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s var(--ease-expo);
}
.roster__group.is-open .roster__body { max-height: 2000px; }
.roster__list {
  padding: 0 var(--sp-5) var(--sp-5);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.roster__unit {
  padding: 6px 13px;
  background: var(--c-surface-2);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  color: var(--c-text-mid);
}
.roster__unit i { font-style: normal; font-family: var(--f-num); font-size: 11px; color: var(--c-amber); margin-left: 4px; font-weight: 700; }

/* ==========================================================================
   12. 主题页（课程详情卡）
   ========================================================================== */

.course { overflow: hidden; }
.course__head {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  min-height: 300px;
}
.course__intro { padding: var(--sp-7) var(--sp-7) var(--sp-6); display: flex; flex-direction: column; }
.course__no { font-family: var(--f-num); font-size: 13px; font-weight: 700; letter-spacing: .14em; color: var(--c-amber); }
.course__title { margin-top: var(--sp-3); font-size: var(--fs-h2); }
.course__tagline { margin: var(--sp-3) 0 0; font-size: 15.5px; color: var(--c-text-mid); }
.course__meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: auto;
  padding-top: var(--sp-5);
}
.course__chip {
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--c-surface-2);
  font-size: var(--fs-xs);
  color: var(--c-text-mid);
  font-weight: 500;
}
.course__photo { position: relative; min-height: 240px; }
.course__photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.course__photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--c-surface) 0%, transparent 24%);
}
.course__body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
  padding: var(--sp-6) var(--sp-7);
  border-top: .5px solid var(--c-line);
  background: var(--c-surface);
}
.course__block h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--c-amber);
  font-family: var(--f-sans);
  margin-bottom: var(--sp-3);
}
.course__block ul { margin: 0; padding: 0; list-style: none; }
.course__block li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--c-text-mid);
  margin-bottom: 8px;
  line-height: 1.6;
}
.course__block li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-indigo-lt);
}
@media (max-width: 860px) {
  .course__head { grid-template-columns: 1fr; }
  .course__photo { min-height: 200px; order: -1; }
  .course__photo::after { background: linear-gradient(to top, var(--c-surface) 0%, transparent 30%); }
  .course__body { grid-template-columns: 1fr; gap: var(--sp-5); padding: var(--sp-5); }
  .course__intro { padding: var(--sp-5); }
}

/* ==========================================================================
   13. 预约页（联系 + FAQ 手风琴）
   ========================================================================== */

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.contact-card { padding: var(--sp-6); text-align: center; }
.contact-card__qr { width: 148px; height: 148px; margin: 0 auto; border-radius: var(--r-sm); overflow: hidden; border: .5px solid var(--c-line); }
.contact-card__qr img { width: 100%; height: 100%; object-fit: cover; }
.contact-card__icon {
  width: 56px; height: 56px;
  margin: 0 auto;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-surface-2);
  color: var(--c-indigo);
}
.contact-card__name { margin-top: var(--sp-4); font-size: 16px; font-weight: 600; color: var(--c-ink); font-family: var(--f-sans); }
.contact-card__value { margin-top: 4px; font-family: var(--f-num); font-size: var(--fs-sm); color: var(--c-amber); font-weight: 600; word-break: break-all; }
.contact-card__desc { margin: var(--sp-2) 0 0; font-size: var(--fs-sm); color: var(--c-text-mute); }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.faq { display: flex; flex-direction: column; gap: var(--sp-3); }
.faq__item { overflow: hidden; }
.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--f-sans);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-ink);
}
.faq__q:hover { background: var(--c-surface-2); }
.faq__q .roster__chev { margin-left: auto; }
.faq__item.is-open .faq__q .roster__chev { transform: rotate(90deg); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .4s var(--ease-expo); }
.faq__item.is-open .faq__a { max-height: 400px; }
.faq__a-inner { padding: 0 var(--sp-5) var(--sp-5) calc(var(--sp-5) + 28px); font-size: 14.5px; color: var(--c-text-mid); }
.faq__no {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--c-surface-2);
  color: var(--c-amber);
  font-family: var(--f-num);
  font-size: 12px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.faq__item.is-open .faq__no { background: var(--c-amber); color: #fff; }

/* ==========================================================================
   14. 关于我（人像 + 时间线 + 荣誉）
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: var(--sp-7);
  align-items: start;
}
.about-photo { position: relative; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-deep); }
.about-photo img { width: 100%; }
.about-photo::after {
  content: "";
  position: absolute; inset: 0;
  border: 1px solid rgba(245,243,238,.25);
  border-radius: var(--r-lg);
  pointer-events: none;
}
.about-photo__badge {
  position: absolute;
  left: var(--sp-4); bottom: var(--sp-4);
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: var(--glass-dark);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: var(--fs-sm);
  border: 1px solid rgba(245,243,238,.25);
  z-index: 1;
}
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

.timeline { position: relative; padding-left: var(--sp-6); }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-amber-lt), var(--c-indigo), transparent);
  border-radius: 2px;
}
.timeline__item { position: relative; padding-bottom: var(--sp-6); }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(var(--sp-6) * -1 + 1px);
  top: 7px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--c-surface);
  border: 3px solid var(--c-amber);
  box-shadow: 0 0 0 4px var(--c-bg);
}
.timeline__year { font-family: var(--f-num); font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--c-amber); }
.timeline__title { margin-top: 2px; font-size: 16px; font-weight: 600; color: var(--c-ink); font-family: var(--f-sans); }
.timeline__desc { margin: 4px 0 0; font-size: 14px; color: var(--c-text-mid); }

.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.honor { padding: var(--sp-5); text-align: center; }
.honor__num { font-family: var(--f-num); font-size: 30px; font-weight: 700; color: var(--c-amber); font-variant-numeric: tabular-nums; }
.honor__label { margin-top: 6px; font-size: var(--fs-sm); color: var(--c-text-mid); }
@media (max-width: 768px) { .honor-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   15. 短视频区（scenes 页占位）
   ========================================================================== */

.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.video-card { aspect-ratio: 16/10; }
@media (max-width: 860px) { .video-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   16. 入场动效变体
   ========================================================================== */

@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ============================================================
   v3.1 增补：ZD logo 组合 / 分类跑马灯 / B站视频卡
   ============================================================ */

/* ---- 导航 logo：ZD 方标 + 字标 ---- */
.nav__logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav__logo-mark { height: 38px; width: auto; border-radius: 8px; display: block; }
.nav__logo-text {
  font-family: var(--font-serif);
  font-size: 21px; font-weight: 700; color: var(--ink);
  letter-spacing: 2px; line-height: 1;
}
.nav__logo-text small {
  display: block; font-family: var(--font-sans); font-size: 10px;
  font-weight: 500; letter-spacing: 3px; color: var(--ink-3); margin-top: 3px;
}
.footer__brand .nav__logo-mark { height: 44px; border-radius: 10px; }
.footer__brand .nav__logo-text { color: #fff; }
.footer__brand .nav__logo-text small { color: rgba(250,248,245,.55); }

/* ---- 分类条带（全部视图）---- */
.strip { margin-bottom: var(--sp-6); }
.strip__head {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: var(--sp-3);
}
.strip__title {
  font-family: var(--font-serif); font-size: 19px; font-weight: 700;
  color: var(--ink); display: flex; align-items: center; gap: 10px;
}
.strip__title::before {
  content: ''; width: 22px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
}
.strip__count { font-size: 12px; color: var(--ink-3); }
.strip__hint { margin-left: auto; font-size: 11px; color: var(--ink-3); }

/* ---- 跑马灯：无缝横向滚动，hover 暂停 ---- */
.marquee {
  overflow: hidden; position: relative;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.marquee__track {
  display: flex; gap: 14px; width: max-content;
  padding: 2px 0;
  animation: marquee-l var(--mq-dur, 60s) linear infinite;
}
.marquee--rev .marquee__track { animation-name: marquee-r; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  flex: none; width: var(--mq-w, 300px); border-radius: 12px; overflow: hidden;
  border: 0.5px solid var(--line); background: var(--paper);
  cursor: zoom-in; position: relative;
  transition: transform var(--ease-out), box-shadow var(--ease-out);
}
.marquee__item:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); }
.marquee__item img {
  width: 100%; height: 200px; object-fit: cover; display: block;
  opacity: 0; transition: opacity .5s var(--ease-out);
}
.marquee__item img.is-loaded { opacity: 1; }
.marquee__item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 24px 12px 9px; font-size: 11px; color: #fff;
  background: linear-gradient(transparent, rgba(22,50,79,.72));
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
@keyframes marquee-l { from { transform: translateX(0); } to { transform: translateX(calc(-50% - 7px)); } }
@keyframes marquee-r { from { transform: translateX(calc(-50% - 7px)); } to { transform: translateX(0); } }
@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; }
  .marquee { overflow-x: auto; }
}

/* ---- 分类瀑布流（按需渲染容器）---- */
.masonry--dynamic { min-height: 400px; }
.gallery-empty {
  padding: 60px 0; text-align: center; color: var(--ink-3); font-size: 14px;
}

/* ---- B站视频卡 ---- */
.video-card--bili {
  padding: 0; overflow: hidden; background: #000;
}
.video-card--bili .bili-frame {
  position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000;
}
.video-card--bili iframe {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0;
}
.video-card--bili .bili-meta {
  padding: 13px 15px 15px; background: var(--paper);
}
.video-card--bili .bili-meta b {
  display: block; font-size: 14px; color: var(--ink); line-height: 1.5;
  margin-bottom: 4px;
}
.video-card--bili .bili-meta small { font-size: 11px; color: var(--ink-3); }

/* ---- v3.1 首屏右置布局（合成图：左人像 + 右会场）---- */
.hero--split::before {
  background:
    radial-gradient(ellipse 60% 50% at 76% 26%, rgba(24,95,165,.32), transparent 62%),
    linear-gradient(90deg, rgba(10,27,46,.30) 0%, rgba(10,27,46,.46) 40%, rgba(10,27,46,.88) 100%),
    linear-gradient(180deg, rgba(10,27,46,.34) 0%, transparent 32%, rgba(10,27,46,.74) 100%);
}
.hero--split .hero__inner { margin-left: auto; text-align: right; }
.hero--split .hero__sub { margin-left: auto; }
.hero--split .hero__actions { justify-content: flex-end; }
@media (max-width: 860px) {
  .hero--split::before {
    background:
      radial-gradient(ellipse 70% 55% at 22% 30%, rgba(24,95,165,.34), transparent 60%),
      linear-gradient(180deg, rgba(10,27,46,.62) 0%, rgba(14,34,56,.68) 55%, rgba(10,27,46,.85) 100%);
  }
  .hero--split .hero__inner { margin-left: 0; text-align: left; }
  .hero--split .hero__sub { margin-left: 0; }
  .hero--split .hero__actions { justify-content: flex-start; }
}