/* =========================================================
   乐鱼赛事 · 共享样式 /assets/site.css
   头部、页脚、通用组件与响应式基础
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, dl, dt, dd, blockquote {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

img, svg, video { display: block; max-width: 100%; height: auto; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

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

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --c-deep: #0A1B33;
  --c-midnight: #06101F;
  --c-cyan: #22D3EE;
  --c-cyan-mist: #7FE7F5;
  --c-glass: #12385C;
  --c-coral: #FF6B4A;
  --c-coral-soft: #FF9E7A;
  --c-stone: #8A94A6;
  --c-paper: #EDF3F6;
  --c-moss: #4E7C59;
  --c-clay: #B4653F;

  --c-line: rgba(127, 231, 245, .16);
  --c-line-soft: rgba(127, 231, 245, .09);
  --c-text-soft: rgba(237, 243, 246, .74);
  --c-text-dim: rgba(237, 243, 246, .42);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: var(--font-display);
  --font-data: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --fs-body: 16.5px;
  --fs-label: 12.5px;
  --fs-h1: clamp(32px, 5.4vw, 56px);
  --fs-h2: clamp(26px, 3.6vw, 38px);
  --fs-score: clamp(48px, 8vw, 92px);

  --shell: 1200px;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --gap: clamp(16px, 2vw, 24px);
  --z-header: 60;
  --z-drop: 70;
  --shadow-drop: 0 26px 52px -26px rgba(0, 0, 0, .8);
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--c-paper);
  background-color: var(--c-deep);
  background-image:
    radial-gradient(1100px 620px at 12% -6%, rgba(34, 211, 238, .17), transparent 62%),
    radial-gradient(900px 520px at 92% 2%, rgba(255, 107, 74, .11), transparent 64%),
    radial-gradient(760px 520px at 50% 120%, rgba(78, 124, 89, .14), transparent 70%),
    linear-gradient(180deg, #0A1B33 0%, #071426 55%, #06101F 100%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 800; line-height: 1.2; letter-spacing: .01em; }

p { overflow-wrap: break-word; }

::selection { background: rgba(34, 211, 238, .32); color: #FFFFFF; }

:focus-visible { outline: 2px solid var(--c-cyan); outline-offset: 3px; border-radius: 6px; }
:focus:not(:focus-visible) { outline: none; }

#main-content { display: block; outline: none; scroll-margin-top: 130px; }

/* ---------- 4. 工具类与容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 32px);
}

.shell--narrow { max-width: 820px; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-data);
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  text-align: center;
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn--primary { background: var(--c-cyan); color: #04131B; }
.btn--primary:hover { background: var(--c-cyan-mist); }

.btn--coral { background: var(--c-coral); color: #1A0A05; }
.btn--coral:hover { background: var(--c-coral-soft); }

.btn--ghost { background: transparent; border-color: rgba(127, 231, 245, .35); color: var(--c-cyan-mist); }
.btn--ghost:hover { background: rgba(34, 211, 238, .12); border-color: rgba(34, 211, 238, .6); }

/* ---------- 6. 面板 / 芯片 / 数据 ---------- */
.panel {
  background: rgba(18, 56, 92, .42);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  padding: clamp(16px, 2.2vw, 24px);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
  backdrop-filter: blur(10px) saturate(130%);
}

.panel--solid {
  background: #0C2036;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-color: rgba(127, 231, 245, .12);
}

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.panel__title { font-size: 17px; font-weight: 700; letter-spacing: .03em; }

.panel__meta {
  font-family: var(--font-data);
  font-size: var(--fs-label);
  letter-spacing: .1em;
  color: var(--c-stone);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(127, 231, 245, .1);
  color: var(--c-cyan-mist);
  font-family: var(--font-data);
  font-size: var(--fs-label);
  letter-spacing: .08em;
  white-space: nowrap;
}

.chip--live { background: rgba(255, 107, 74, .14); border-color: rgba(255, 107, 74, .42); color: var(--c-coral-soft); }
.chip--ok { background: rgba(78, 124, 89, .22); border-color: rgba(78, 124, 89, .55); color: #9BC9A6; }
.chip--archive { background: rgba(180, 101, 63, .2); border-color: rgba(180, 101, 63, .5); color: #E1A183; }

.stat { display: flex; flex-direction: column; gap: 6px; min-width: 0; }

.stat__value {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-paper);
}

.stat__value--score { font-size: var(--fs-score); color: var(--c-coral); letter-spacing: .04em; }

.stat__label {
  font-family: var(--font-data);
  font-size: var(--fs-label);
  letter-spacing: .16em;
  color: var(--c-stone);
}

/* ---------- 7. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--c-line);
  background: linear-gradient(140deg, rgba(18, 56, 92, .9), rgba(6, 16, 31, .95));
}

.media--21x9 { aspect-ratio: 21 / 9; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }

.media__img { width: 100%; height: 100%; object-fit: cover; }

.media__veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(10, 27, 51, .62), rgba(6, 16, 31, .12) 46%, rgba(34, 211, 238, .22));
}

.media__lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(90deg, rgba(127, 231, 245, .18) 1px, transparent 1px),
    linear-gradient(rgba(127, 231, 245, .12) 1px, transparent 1px);
  background-size: 64px 64px;
}

.media__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 12px 16px;
  font-family: var(--font-data);
  font-size: var(--fs-label);
  letter-spacing: .08em;
  color: rgba(237, 243, 246, .86);
  background: linear-gradient(180deg, transparent, rgba(6, 16, 31, .88));
}

/* ---------- 8. 章节 / 正文 / 面包屑 ---------- */
.section { padding: clamp(38px, 5.5vw, 72px) 0; }
.section--tight { padding: clamp(22px, 3vw, 36px) 0; }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.section__label {
  font-family: var(--font-data);
  font-size: var(--fs-label);
  letter-spacing: .22em;
  color: var(--c-cyan);
}

.section__title { font-size: var(--fs-h2); letter-spacing: .02em; }

.section__note { flex: 1 1 320px; font-size: 15.5px; color: var(--c-text-soft); }

.prose { max-width: 68ch; }
.prose p { margin: 0 0 1.05em; color: var(--c-text-soft); }
.prose h2 { font-size: clamp(21px, 2.4vw, 26px); margin: 1.6em 0 .6em; color: var(--c-paper); }
.prose h3 { font-size: 18px; margin: 1.4em 0 .5em; color: var(--c-cyan-mist); }
.prose ul { margin: 0 0 1.1em; }
.prose ul li { position: relative; padding-left: 20px; margin-bottom: .55em; color: var(--c-text-soft); }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: .72em;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--c-cyan);
}
.prose a { color: var(--c-cyan); border-bottom: 1px solid rgba(34, 211, 238, .35); }
.prose a:hover { color: var(--c-cyan-mist); border-bottom-color: var(--c-cyan-mist); }
.prose strong { color: var(--c-paper); }

.crumbs { padding: 20px 0 0; }

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--c-stone);
}

.crumbs__item { display: inline-flex; align-items: center; gap: 9px; }
.crumbs__item + .crumbs__item::before { content: "/"; color: rgba(138, 148, 166, .55); }
.crumbs__link { color: var(--c-stone); transition: color .18s ease; }
.crumbs__link:hover { color: var(--c-cyan); }
.crumbs__item--current { color: var(--c-cyan-mist); }

/* ---------- 9. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  color: var(--c-paper);
  background: linear-gradient(180deg, rgba(10, 27, 51, .97), rgba(6, 16, 31, .92));
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--c-line);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(127, 231, 245, .05) 1px, transparent 1px),
    linear-gradient(rgba(127, 231, 245, .04) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 90%);
  mask-image: linear-gradient(180deg, #000, transparent 90%);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -70px;
  transform: translateX(-50%);
  z-index: 90;
  padding: 10px 20px;
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: var(--c-cyan);
  color: #04131B;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: top .2s ease;
}
.skip-link:focus, .skip-link:focus-visible { top: 0; }

.header__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 32px);
}

.header__strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--c-line-soft);
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--c-stone);
  white-space: nowrap;
  overflow: hidden;
}

.strip__line { display: inline-flex; align-items: center; gap: 8px; color: var(--c-cyan-mist); }

.strip__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 10px rgba(34, 211, 238, .9);
  animation: strip-pulse 2.4s ease-in-out infinite;
}

.strip__status { color: var(--c-stone); }

@keyframes strip-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.masthead {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 0 10px;
}

.masthead__brand { display: flex; justify-content: center; min-width: 0; }

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

.brand__mark {
  position: relative;
  flex: none;
  width: 26px; height: 26px;
  border: 2px solid var(--c-cyan);
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(34, 211, 238, .35);
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--c-coral);
}

.brand__text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1;
  letter-spacing: .14em;
  text-shadow: 0 0 24px rgba(34, 211, 238, .35);
}

.quick-toggle {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border: 1px solid rgba(34, 211, 238, .38);
  border-radius: 999px;
  background: rgba(34, 211, 238, .09);
  color: var(--c-cyan);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}
.quick-toggle:hover { background: rgba(34, 211, 238, .18); color: var(--c-cyan-mist); }
.quick-toggle[aria-expanded="true"] { background: var(--c-cyan); border-color: var(--c-cyan); color: #04131B; }

.quick-toggle__label { line-height: 1; }

.quick-toggle__chev {
  width: 0; height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid currentColor;
  transition: transform .24s ease;
}
.quick-toggle[aria-expanded="true"] .quick-toggle__chev { transform: rotate(180deg); }

.nav-toggle {
  justify-self: end;
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid rgba(127, 231, 245, .3);
  border-radius: 999px;
  background: rgba(18, 56, 92, .55);
  color: var(--c-paper);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  transition: background-color .2s ease, border-color .2s ease;
}
.nav-toggle[aria-expanded="true"] { background: rgba(34, 211, 238, .18); border-color: rgba(34, 211, 238, .6); }

.nav-toggle__label { line-height: 1; }

.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 4px; width: 16px; }
.nav-toggle__bars span { display: block; height: 2px; border-radius: 2px; background: currentColor; transition: transform .22s ease; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child { transform: translateY(-3px) rotate(-45deg); }

.site-nav {
  position: relative;
  z-index: 3;
  border-top: 1px solid var(--c-line-soft);
  border-bottom: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(6, 16, 31, .35), rgba(6, 16, 31, 0));
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2px 4px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 6px clamp(16px, 3vw, 32px);
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 15px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--c-text-soft);
  transition: color .18s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s cubic-bezier(.22, .61, .36, 1);
}

.site-nav__link:hover { color: var(--c-cyan-mist); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--c-paper); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); background: var(--c-coral); }

.quick-channels {
  position: absolute;
  left: 0; right: 0; top: 100%;
  z-index: var(--z-drop);
  display: none;
  background: linear-gradient(180deg, rgba(6, 16, 31, .99), rgba(10, 27, 51, .97));
  border-bottom: 1px solid var(--c-line);
  box-shadow: var(--shadow-drop);
}
.quick-channels[data-open] { display: block; }

.quick-channels__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px clamp(16px, 3vw, 32px);
}

.quick-channels__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  background: rgba(18, 56, 92, .6);
  color: var(--c-paper);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}
.quick-channels__link::before {
  content: "";
  flex: none;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-coral);
}
.quick-channels__link:hover { border-color: rgba(34, 211, 238, .6); background: rgba(34, 211, 238, .12); color: var(--c-cyan-mist); }

.scroll-progress {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 4;
  height: 3px;
  background: rgba(127, 231, 245, .1);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-cyan-mist) 55%, var(--c-coral));
  transition: transform .12s linear;
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  overflow: hidden;
  color: var(--c-paper);
  background: linear-gradient(180deg, #06101F 0%, #040B14 100%);
  border-top: 1px solid var(--c-line);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(115deg, transparent 38%, rgba(34, 211, 238, .09) 38%, rgba(34, 211, 238, .09) 38.35%, transparent 38.35%),
    linear-gradient(115deg, transparent 62%, rgba(255, 107, 74, .08) 62%, rgba(255, 107, 74, .08) 62.3%, transparent 62.3%);
}

.site-footer::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 1px;
  opacity: .7;
  background: linear-gradient(90deg, transparent, var(--c-cyan), transparent);
}

.footer__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(34px, 5vw, 60px) clamp(16px, 3vw, 32px) 26px;
}

.footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--c-line-soft);
}

.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: .14em;
}

.footer__mark {
  position: relative;
  flex: none;
  width: 20px; height: 20px;
  border: 2px solid var(--c-cyan);
  border-radius: 50%;
}
.footer__mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--c-coral);
}

.footer__brand-text { line-height: 1; }

.footer__closing {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--c-cyan-mist);
}

.footer__nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 40px);
  padding: clamp(24px, 3.5vw, 40px) 0;
}

.footer__col { min-width: 0; }

.footer__title {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c-stone);
}

.footer__list { display: flex; flex-direction: column; gap: 9px; }

.footer__link {
  display: inline-block;
  font-size: 15px;
  color: var(--c-text-soft);
  transition: color .18s ease, transform .18s ease;
}
.footer__link:hover { color: var(--c-cyan); transform: translateX(3px); }

.footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  padding: 22px 0;
  border-top: 1px dashed var(--c-line-soft);
  border-bottom: 1px dashed var(--c-line-soft);
}

.footer__contact-item { display: inline-flex; align-items: baseline; gap: 10px; font-size: 14.5px; color: var(--c-text-soft); }

.footer__contact-key {
  flex: none;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--c-stone);
}

.footer__contact-val {
  font-family: var(--font-data);
  letter-spacing: .03em;
  color: var(--c-paper);
}

.footer__contact-item--wide { flex: 1 1 320px; }

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 20px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-stone);
}

.footer__copy { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.footer__icp { color: var(--c-cyan-mist); }
.footer__note { color: var(--c-stone); }

/* ---------- 11. 动效状态 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s ease, transform .6s cubic-bezier(.22, .61, .36, 1);
}
.js-ready [data-reveal].is-visible { opacity: 1; transform: translateY(0); }

.js-ready .section--track .section__title { color: var(--c-text-dim); transition: color .5s ease; }
.js-ready .section--track.is-current .section__title { color: var(--c-paper); }

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1024px) {
  .span-3 { grid-column: span 6; }
  .span-4 { grid-column: span 6; }
  .span-5 { grid-column: span 12; }
  .span-7 { grid-column: span 12; }
  .span-8 { grid-column: span 12; }
  .span-9 { grid-column: span 12; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }

  .masthead { padding: 10px 0 12px; }

  .site-nav {
    position: absolute;
    left: 0; right: 0; top: 100%;
    z-index: var(--z-drop);
    max-height: 0;
    overflow: hidden;
    border-top: 1px solid var(--c-line);
    border-bottom: 1px solid var(--c-line);
    background: linear-gradient(180deg, rgba(6, 16, 31, .99), rgba(6, 16, 31, .96));
    box-shadow: var(--shadow-drop);
    transition: max-height .32s ease;
  }

  .site-nav[data-open] { max-height: min(72vh, 560px); overflow-y: auto; }

  .site-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding: 10px clamp(16px, 3vw, 32px) 18px;
  }

  .site-nav__item { border-bottom: 1px solid var(--c-line-soft); }
  .site-nav__item:last-child { border-bottom: 0; }

  .site-nav__link { display: block; width: 100%; padding: 14px 4px; font-size: 16.5px; }

  .site-nav__link::after { left: 4px; right: auto; width: 22px; bottom: 10px; }

  .quick-channels__list {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 14px clamp(16px, 3vw, 32px);
  }

  .footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 18px; }
  .footer__top { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .span-3, .span-4, .span-6 { grid-column: span 12; }
  .header__strip { font-size: 10.5px; letter-spacing: .1em; }
  .strip__status { display: none; }
  .footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__contact { flex-direction: column; gap: 12px; }
  .footer__legal { flex-direction: column; align-items: flex-start; }
}

/* ---------- 13. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .js-ready [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress__bar { transition: none; }
}