/* ==========================================================================
   海鸥体育 · 共享站点样式 /assets/site.css
   复古未来主义：老电视暖光 × 体育数据冷光
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --haiou-white: #F7F4EC;
  --deep-blue: #0E2B4C;
  --ink-blue: #07182B;
  --tv-amber: #E8B44A;
  --amber-light: #F5DFA8;
  --retro-red: #D9481F;
  --electric-teal: #2FC5B6;
  --brick-red: #A83E2A;
  --glass-white: rgba(255, 255, 255, 0.42);
  --gray-blue: #5A6B7E;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    "Liberation Mono", monospace;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 26px;

  --wrap: 1200px;
  --wrap-narrow: 760px;
  --gutter: clamp(16px, 4vw, 40px);
  --stack: clamp(26px, 5vw, 64px);

  --shadow-panel: 0 20px 44px -28px rgba(7, 24, 43, 0.62);
  --shadow-soft: 0 10px 26px -20px rgba(7, 24, 43, 0.55);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, hr { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

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

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

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

hr { border: 0; }

:focus-visible {
  outline: 2px solid var(--electric-teal);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ---------- 3. 文字与中文排版 ---------- */
body {
  background-color: var(--haiou-white);
  color: var(--deep-blue);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
  color: var(--deep-blue);
}

h1 { font-size: clamp(34px, 5vw, 64px); }
h2 { font-size: clamp(26px, 3.2vw, 40px); }
h3 { font-size: clamp(22px, 2.2vw, 26px); }
h4 { font-size: 18px; letter-spacing: -0.01em; }

.display {
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.06;
  text-shadow: 0 0 0.5px var(--tv-amber), 0 0 2px rgba(232, 180, 74, 0.28);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-blue);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brick-red);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--brick-red);
  display: inline-block;
}

.lede {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.7;
  color: var(--deep-blue);
  opacity: 0.86;
  max-width: 38em;
}

.stat {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--ink-blue);
  font-variant-numeric: tabular-nums;
}

.stat--teal { color: var(--electric-teal); }
.stat--amber { color: var(--tv-amber); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}

.wrap--narrow {
  width: min(100% - (var(--gutter) * 2), var(--wrap-narrow));
  margin-inline: auto;
}

.section { padding-block: var(--stack); }

.section--tight { padding-block: calc(var(--stack) * 0.55); }

.section--ink {
  background: var(--ink-blue);
  color: var(--haiou-white);
}

.section--ink h1,
.section--ink h2,
.section--ink h3 { color: var(--haiou-white); }

.section--ink .lede,
.section--ink p { color: rgba(247, 244, 236, 0.82); }

.section--amber { background: var(--amber-light); }

.flow > * + * { margin-top: 1.1em; }

.prose { font-size: 17px; line-height: 1.75; }

.prose > * + * { margin-top: 1.1em; }

.prose p,
.prose li { max-width: 38em; }

.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.5em; }

.rule {
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, var(--brick-red), rgba(14, 43, 76, 0.14) 62%, transparent);
}

.flow > .rule,
.prose > .rule { margin-block: 2em; }

/* ---------- 5. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 28px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.grid--sidebar {
  display: grid;
  grid-template-columns: minmax(180px, 250px) minmax(0, 1fr);
  gap: clamp(22px, 3vw, 48px);
  align-items: start;
}

@media (max-width: 860px) {
  .grid--sidebar { grid-template-columns: 1fr; }
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.72em 1.2em;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease),
    border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

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

.btn--primary {
  background: var(--retro-red);
  color: #FFFFFF;
  box-shadow: 0 12px 26px -18px rgba(217, 72, 31, 0.95);
}

.btn--primary:hover { background: #BC3C17; }

.btn--ghost {
  background: transparent;
  color: currentColor;
  border-color: currentColor;
}

.btn--ghost:hover {
  background: var(--tv-amber);
  border-color: var(--tv-amber);
  color: var(--ink-blue);
}

.btn--amber {
  background: var(--tv-amber);
  color: var(--ink-blue);
}

.btn--amber:hover { background: #F0C566; }

.btn--sm {
  font-size: 13px;
  padding: 0.55em 1em;
  letter-spacing: 0.03em;
}

/* ---------- 7. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  color: var(--haiou-white);
  background: linear-gradient(180deg, rgba(7, 24, 43, 0.82), rgba(7, 24, 43, 0.5));
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid rgba(232, 180, 74, 0.24);
  transition: background-color 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.site-header[data-nav-state="solid"] {
  background: var(--ink-blue);
  border-bottom-color: var(--tv-amber);
  box-shadow: 0 16px 38px -26px rgba(0, 0, 0, 0.95);
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -80px;
  z-index: 200;
  padding: 0.7em 1.1em;
  background: var(--tv-amber);
  color: var(--ink-blue);
  font-size: 14px;
  font-weight: 800;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top 0.2s var(--ease);
}

.skip-link:focus { top: 0; }

/* 数据跑马条 */
.ticker {
  background: rgba(7, 24, 43, 0.4);
  border-bottom: 1px solid rgba(247, 244, 236, 0.09);
}

.ticker__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 34px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.07em;
}

.ticker__label {
  flex: 0 0 auto;
  padding: 0.18em 0.62em;
  border-radius: 3px;
  background: var(--tv-amber);
  color: var(--ink-blue);
  font-weight: 700;
  letter-spacing: 0.12em;
}

.ticker__list {
  display: flex;
  align-items: center;
  gap: 26px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.ticker__list::-webkit-scrollbar { display: none; }

.ticker__item {
  color: rgba(247, 244, 236, 0.76);
  display: inline-flex;
  align-items: center;
}

.ticker__item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--electric-teal);
  margin-right: 0.7em;
  flex: 0 0 auto;
}

/* 头部主行 */
.site-header__bar { padding-block: 9px; }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  min-height: 62px;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: inherit;
}

.brand__mark {
  position: relative;
  width: 40px;
  height: 31px;
  flex: 0 0 auto;
  border-radius: 7px;
  background: linear-gradient(155deg, #1B3F66, #07182B 72%);
  box-shadow: inset 0 0 0 1.5px var(--tv-amber), 0 6px 14px -10px rgba(0, 0, 0, 0.9);
}

.brand__mark::before {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 4px;
  height: 15px;
  border-radius: 3px;
  background: linear-gradient(160deg, rgba(47, 197, 182, 0.95), rgba(232, 180, 74, 0.8));
  box-shadow: inset 0 0 8px rgba(7, 24, 43, 0.55);
}

.brand__mark::after {
  content: "";
  position: absolute;
  right: 5px;
  bottom: 5px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--retro-red);
  box-shadow: -9px 0 0 0 var(--tv-amber);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.16;
}

.brand__name {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.03em;
  color: currentColor;
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  color: var(--tv-amber);
  opacity: 0.92;
}

/* 主导航 */
.nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1px, 0.8vw, 8px);
}

.nav__item { display: block; }

.nav__link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 0.55em 0.72em;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 600;
  color: rgba(247, 244, 236, 0.82);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.nav__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--tv-amber);
  opacity: 0.88;
}

.nav__link:hover {
  color: #FFFFFF;
  background: rgba(247, 244, 236, 0.1);
}

.nav__link[aria-current="page"] {
  color: var(--ink-blue);
  background: var(--tv-amber);
}

.nav__link[aria-current="page"] .nav__index {
  color: var(--ink-blue);
  opacity: 1;
}

/* 频道按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 0.6em 0.85em;
  border: 1px solid rgba(232, 180, 74, 0.55);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--tv-amber);
  margin-left: auto;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 15px;
  height: 2px;
  background: currentColor;
  transition: background-color 0.2s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 15px;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--electric-teal), var(--tv-amber) 55%, var(--retro-red));
}

/* ---------- 8. 面板 / 画中画 ---------- */
.panel {
  position: relative;
  background: #FFFFFF;
  border: 1px solid rgba(14, 43, 76, 0.1);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 36px);
  box-shadow: var(--shadow-panel);
}

.panel--ink {
  background: var(--ink-blue);
  border-color: rgba(232, 180, 74, 0.28);
  color: var(--haiou-white);
}

.panel--ink h2,
.panel--ink h3,
.panel--ink h4 { color: var(--haiou-white); }

.panel--amber {
  background: var(--amber-light);
  border-color: rgba(168, 62, 42, 0.24);
}

.panel--glass {
  background: var(--glass-white);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.tv-frame {
  position: relative;
  padding: clamp(14px, 2vw, 22px);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, #12345A, #07182B 72%);
  box-shadow: inset 0 0 0 1px rgba(232, 180, 74, 0.3), var(--shadow-panel);
}

.tv-frame__screen {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-blue);
  aspect-ratio: 16 / 9;
}

.tv-frame__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(120% 90% at 22% 6%, rgba(232, 180, 74, 0.22), transparent 62%),
    linear-gradient(180deg, transparent 62%, rgba(7, 24, 43, 0.5));
}

.tv-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(247, 244, 236, 0.86);
  background: linear-gradient(180deg, transparent, rgba(7, 24, 43, 0.88));
}

/* ---------- 9. 面包屑 / 索引 / 标签 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gray-blue);
}

.crumbs a { color: inherit; transition: color 0.2s var(--ease); }
.crumbs a:hover { color: var(--retro-red); }

.crumbs__sep { opacity: 0.45; }

.crumbs__current { color: var(--deep-blue); }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.36em 0.85em;
  border: 1px solid rgba(14, 43, 76, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--deep-blue);
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.chip:hover { border-color: var(--brick-red); }

.chip[aria-pressed="true"],
.chip--on {
  background: var(--deep-blue);
  border-color: var(--deep-blue);
  color: var(--haiou-white);
}

.index-list {
  display: grid;
  gap: 2px;
  border-left: 2px solid rgba(14, 43, 76, 0.14);
  padding-left: 14px;
}

.index-list__item { display: block; }

.index-list__item a {
  display: flex;
  gap: 10px;
  padding: 0.42em 0;
  font-size: 14.5px;
  color: var(--gray-blue);
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.index-list__item a:hover {
  color: var(--retro-red);
  transform: translateX(3px);
}

.index-list__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--tv-amber);
  flex: 0 0 auto;
  padding-top: 2px;
}

/* ---------- 10. 媒体容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  background: linear-gradient(160deg, #12345A, #07182B);
}

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

.media__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.07) 0 1px,
    transparent 1px 3px
  );
  mix-blend-mode: screen;
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--haiou-white);
  background: linear-gradient(180deg, transparent, rgba(7, 24, 43, 0.88));
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media--tv {
  aspect-ratio: 4 / 3;
  border-radius: 20px;
  box-shadow: inset 0 0 0 6px rgba(7, 24, 43, 0.85),
    inset 0 0 0 7px rgba(232, 180, 74, 0.4);
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  padding-top: clamp(40px, 6vw, 74px);
  background: var(--ink-blue);
  color: rgba(247, 244, 236, 0.78);
  border-top: 3px solid var(--tv-amber);
}

.site-footer p { max-width: none; }

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(640px 220px at 10% 0%, rgba(232, 180, 74, 0.16), transparent 70%),
    radial-gradient(540px 210px at 90% 14%, rgba(47, 197, 182, 0.14), transparent 72%);
}

.footer__antenna {
  position: absolute;
  top: -2px;
  right: 8%;
  width: 130px;
  height: 72px;
  pointer-events: none;
  opacity: 0.55;
}

.footer__antenna::before,
.footer__antenna::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 2px;
  height: 68px;
  background: linear-gradient(180deg, transparent, var(--brick-red));
  transform-origin: bottom center;
}

.footer__antenna::before { transform: rotate(-28deg); }
.footer__antenna::after { transform: rotate(28deg); }

.footer__top {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(250px, 1.1fr) 2fr;
  gap: clamp(28px, 4vw, 62px);
  padding-bottom: clamp(28px, 4vw, 48px);
}

@media (max-width: 900px) {
  .footer__top { grid-template-columns: 1fr; }
}

.footer__brand { min-width: 0; }

.brand--footer { margin-bottom: 18px; color: var(--haiou-white); }

.footer__signoff {
  margin-bottom: 22px;
  padding-left: 14px;
  border-left: 2px solid var(--brick-red);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--tv-amber);
  max-width: 30em;
}

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

.footer__contact-item {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(247, 244, 236, 0.76);
}

.footer__key {
  flex: 0 0 auto;
  min-width: 4.6em;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--electric-teal);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 42px);
}

@media (max-width: 560px) {
  .footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.footer__col { min-width: 0; }

.footer__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric-teal);
}

.footer__list {
  display: grid;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.55;
}

.footer__list a {
  color: rgba(247, 244, 236, 0.8);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer__list a:hover {
  color: var(--tv-amber);
  border-bottom-color: var(--tv-amber);
}

.footer__meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 26px;
  padding-block: 20px 28px;
  border-top: 1px solid rgba(247, 244, 236, 0.12);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(247, 244, 236, 0.6);
}

.footer__copyright { max-width: none; }

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer__legal a {
  color: rgba(247, 244, 236, 0.72);
  transition: color 0.2s var(--ease);
}

.footer__legal a:hover { color: var(--tv-amber); }

/* ---------- 12. 动效 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

.js-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@keyframes navDrop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1180px) {
  .nav__index { font-size: 10px; }
  .nav__link { font-size: 14px; padding: 0.5em 0.55em; }
}

@media (max-width: 1080px) {
  .header-actions .btn--ghost { display: none; }
}

@media (max-width: 960px) {
  html { scroll-padding-top: 96px; }

  .nav-toggle { display: inline-flex; }

  .header-actions { display: none; }

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    justify-content: flex-start;
    padding: 10px var(--gutter) 18px;
    background: var(--ink-blue);
    border-top: 1px solid rgba(232, 180, 74, 0.3);
    border-bottom: 1px solid rgba(232, 180, 74, 0.3);
    box-shadow: 0 26px 52px -30px rgba(0, 0, 0, 0.95);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

  .nav[data-open="true"] {
    display: block;
    animation: navDrop 0.26s var(--ease);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__link {
    padding: 0.9em 0.2em;
    font-size: 16px;
    border-bottom: 1px solid rgba(247, 244, 236, 0.08);
    border-radius: 0;
  }

  .nav__index { font-size: 12px; }

  .nav__link[aria-current="page"] {
    background: transparent;
    color: var(--tv-amber);
    border-bottom-color: rgba(232, 180, 74, 0.4);
  }

  .nav__link[aria-current="page"] .nav__index { color: var(--tv-amber); }

  .scroll-progress { bottom: -1px; }
}

@media (max-width: 620px) {
  body { font-size: 16.5px; }

  .ticker__inner { gap: 12px; font-size: 11px; }

  .ticker__list { gap: 18px; }

  .site-header__inner { min-height: 56px; }

  .brand__mark { width: 34px; height: 27px; }

  .brand__name { font-size: 15px; }

  .brand__line { display: none; }

  .nav-toggle__text { display: none; }

  .footer__meta { flex-direction: column; align-items: flex-start; }
}

/* ---------- 14. 可访问性降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

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

  .scroll-progress { transition: none; }
}