/* ==========================================================================
   天梭看台 · 共享 Site Kit（/assets/site.css）
   1 变量与重置 / 2 基础排版 / 3 通用组件 / 4 头部 / 5 页脚 / 6 响应式 / 7 动效
   ========================================================================== */

/* ---------- 1. 变量与重置 ---------- */
:root {
  --ink: #0B0E14;
  --panel: #11161F;
  --line: #1E2533;
  --paper: #F4EFE4;
  --paper-bright: #FDF8EE;
  --red: #E2001A;
  --cyan: #00E5FF;
  --gold: #D4AF37;
  --muted: #9AA4B2;
  --elevated: #2B3442;

  --font-display: "Barlow Condensed", "Oswald", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Roboto Mono", Consolas, "Courier New", monospace;

  --maxw: 1440px;
  --edge: clamp(18px, 4vw, 48px);
  --gap: clamp(12px, 1.6vw, 20px);
  --tick-h: 46px;
  --mast-h: 66px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--tick-h) + var(--mast-h) + 24px);
}

body,
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote, fieldset { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
input, textarea, select { font: inherit; }

/* ---------- 2. 基础排版 ---------- */
body {
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(30, 37, 51, .42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 37, 51, .42) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
  background-position: center top;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -.01em;
}

::selection { background: var(--red); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.panel--paper :focus-visible,
.panel--paper a:focus-visible { outline-color: var(--ink); }

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 300;
  padding: 11px 18px;
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  border-left: 4px solid var(--red);
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 12px; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.display {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 9vw, 10rem);
  line-height: .9;
  letter-spacing: -.02em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--red);
  flex: none;
}
.panel--paper .eyebrow { color: #8A6A12; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.rule {
  height: 0;
  border: 0;
  border-top: 1px solid var(--line);
  margin-block: clamp(24px, 3vw, 40px);
}

/* ---------- 3. 通用组件 ---------- */
.section {
  padding-block: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--line);
}
.section:first-of-type { border-top: 0; }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 14px 24px;
  margin-bottom: clamp(22px, 3vw, 38px);
}
.section__index {
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.4vw, 16px);
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gold);
  flex: none;
}
.section__title {
  font-size: clamp(1.9rem, 4.2vw, 3.4rem);
  line-height: .98;
}
.section__lead {
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--muted);
  max-width: 56ch;
}

.grid { display: grid; gap: var(--gap); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.2vw, 28px);
}
.panel--tight { padding: clamp(14px, 1.6vw, 18px); }
.panel--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: #D8D1C1;
}
.panel--paper .section__index { color: #8A6A12; }
.panel--paper .section__lead { color: #4A505C; }
.panel--paper .mono,
.panel--paper .num { color: #0B0E14; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}
.btn--primary:hover {
  background: #FF1029;
  border-color: #FF1029;
}
.btn--ghost {
  background: transparent;
  color: var(--paper);
}
.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}
.btn--quiet {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  padding-inline: 0;
}
.btn--quiet:hover { color: var(--cyan); transform: none; }

.breadcrumbs { margin-bottom: 20px; }
.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--muted);
}
.breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--line);
}
.breadcrumbs__link { color: var(--muted); }
.breadcrumbs__link:hover { color: var(--cyan); }
.breadcrumbs__current { color: var(--paper); }

.prose {
  max-width: 68ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: #DED8CB;
}
.prose p + p { margin-top: 1em; }
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-top: 1.6em; margin-bottom: .5em; color: var(--paper); }
.prose h3 { font-size: clamp(1.15rem, 1.9vw, 1.4rem); margin-top: 1.4em; margin-bottom: .4em; color: var(--paper); }
.prose ul,
.prose ol { margin: 1em 0; padding-left: 1.25em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: .4em; }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(0, 229, 255, .45); }
.prose strong { color: var(--paper); font-weight: 700; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(43, 52, 66, .5);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.tag--live {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}
.tag--data {
  color: var(--cyan);
  border-color: rgba(0, 229, 255, .45);
  background: rgba(0, 229, 255, .08);
}
.tag--gold {
  color: var(--gold);
  border-color: rgba(212, 175, 55, .5);
  background: rgba(212, 175, 55, .1);
}

.data-strip {
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.data-strip__item {
  flex: 1 1 170px;
  padding: 14px 16px;
  border-right: 1px solid var(--line);
}
.data-strip__item:last-child { border-right: 0; }
.data-strip__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.data-strip__label {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.media {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--elevated);
  border: 1px solid var(--line);
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.06) saturate(.94) brightness(.92);
}
.media__ph {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-height: 180px;
  padding: 14px;
  text-align: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  background-color: var(--panel);
  background-image: repeating-linear-gradient(135deg, rgba(43, 52, 66, .55) 0 10px, transparent 10px 20px);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(to bottom, rgba(255, 255, 255, .035) 0 1px, transparent 1px 3px);
}
.media__tag {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
  padding: 5px 10px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--paper);
  background: linear-gradient(to top, rgba(11, 14, 20, .94), rgba(11, 14, 20, 0));
}

.toc {
  position: sticky;
  top: calc(var(--tick-h) + var(--mast-h) + 24px);
  border-left: 1px solid var(--line);
  padding-left: 16px;
}
.toc__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.toc__list { display: grid; gap: 2px; }
.toc__link {
  display: block;
  margin-left: -18px;
  padding: 6px 0 6px 16px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.toc__link:hover { color: var(--paper); }
.toc__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--red);
}

/* JS 创建元素 */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 200;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--red), var(--cyan) 62%, var(--gold));
  transition: transform .12s linear;
}
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 150;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--panel);
  color: var(--paper);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .2s var(--ease), transform .2s var(--ease),
              visibility .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover {
  border-color: var(--red);
  color: var(--red);
}

/* 显现动效 */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .38s var(--ease), transform .38s var(--ease);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 4. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(8, 10, 15, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.ticker {
  background: #080A0F;
  border-bottom: 1px solid var(--line);
}
.ticker__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  height: var(--tick-h);
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--edge);
}
.ticker__signal {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}
.ticker__dot {
  width: 7px;
  height: 7px;
  background: var(--red);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(226, 0, 26, .18);
  animation: tickerPulse 1.9s ease-in-out infinite;
}
.ticker__label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--red);
}
.ticker__track {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.ticker__track::-webkit-scrollbar { display: none; }
.ticker__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-inline: 16px;
  white-space: nowrap;
  border-left: 1px solid var(--line);
  font-size: 12.5px;
}
.ticker__item:first-child { border-left: 0; padding-left: 4px; }
.ticker__league {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 2px 6px;
}
.ticker__score {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}
.ticker__score b {
  font-weight: 800;
  color: var(--cyan);
  padding-inline: 2px;
}
.ticker__state {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
}
.ticker__state.is-live { color: var(--red); }
.ticker__state.is-next { color: var(--cyan); }
.ticker__state.is-done { color: var(--muted); }
.ticker__more {
  flex: none;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--paper);
  border-bottom: 1px solid var(--red);
  padding-bottom: 2px;
  transition: color .18s var(--ease);
}
.ticker__more:hover { color: var(--cyan); }

.masthead { position: relative; }
.masthead__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: var(--mast-h);
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .02em;
  flex: none;
}
.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--paper);
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .22em;
  color: var(--muted);
}
.brand:hover .brand__sub { color: var(--cyan); }

.quick-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 6px;
}
.quick-link {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: rgba(43, 52, 66, .28);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.quick-link:hover {
  color: var(--cyan);
  border-color: rgba(0, 229, 255, .55);
  background: rgba(0, 229, 255, .08);
}

.primary-nav { margin-left: auto; }
.primary-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.primary-nav__item { display: flex; }
.primary-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  padding: 8px 11px 10px;
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--paper);
  border-bottom: 2px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.primary-nav__link:hover {
  color: var(--cyan);
  border-bottom-color: rgba(0, 229, 255, .6);
}
.primary-nav__link[aria-current="page"] {
  color: #fff;
  border-bottom-color: var(--red);
}
.primary-nav__index {
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  color: var(--gold);
  margin-right: 6px;
  transform: translateY(-.45em);
}
.primary-nav__link[aria-current="page"] .primary-nav__index { color: var(--red); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.nav-toggle:hover {
  color: var(--cyan);
  border-color: rgba(0, 229, 255, .55);
}
.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 16px;
  flex: none;
}
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}
.nav-toggle[data-open] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[data-open] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[data-open] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 5. 页脚 ---------- */
.site-footer {
  margin-top: clamp(64px, 9vw, 120px);
  background: #080A0F;
  border-top: 1px solid var(--line);
}
.footer__top {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 72px) var(--edge) 28px;
  overflow: hidden;
}
.footer__ghost {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 11vw, 8.5rem);
  line-height: .82;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(244, 239, 228, .13);
  text-stroke: 1px rgba(244, 239, 228, .13);
  margin-bottom: clamp(24px, 4vw, 44px);
  user-select: none;
  white-space: nowrap;
}
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(28px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}
.footer__brand .brand--footer { margin-bottom: 16px; }
.brand--footer .brand__mark { width: 34px; height: 34px; font-size: 14px; }
.brand--footer .brand__name { font-size: 17px; }
.footer__summary {
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}
.footer__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.footer__col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.footer__list { display: grid; gap: 9px; }
.footer__link {
  display: inline-block;
  font-size: 14px;
  color: var(--paper);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.footer__link:hover {
  color: var(--cyan);
  border-bottom-color: rgba(0, 229, 255, .55);
}
.footer__contact {
  padding-block: clamp(24px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
}
.footer__contact-list { display: grid; gap: 0; }
.footer__contact-row {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid rgba(30, 37, 51, .85);
}
.footer__contact-row:first-child { border-top: 0; }
.footer__contact-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
  padding-top: 2px;
}
.footer__contact-val {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  word-break: break-word;
}
.footer__note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 62ch;
}
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 22px;
}
.footer__legal {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
}
.footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.footer__legal-link {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.footer__legal-link:hover {
  color: var(--paper);
  border-bottom-color: var(--red);
}

/* ---------- 6. 响应式 ---------- */
@media (max-width: 1180px) {
  .quick-links { display: none; }
  .primary-nav__link { padding-inline: 9px; font-size: 13.5px; }
}

@media (max-width: 900px) {
  :root { --tick-h: 42px; --mast-h: 60px; }

  .ticker__track { gap: 0; }
  .ticker__item { font-size: 12px; padding-inline: 12px; }
  .ticker__more { display: none; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    display: none;
    background: #0A0D13;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    max-height: calc(100vh - var(--tick-h) - var(--mast-h));
    overflow-y: auto;
    box-shadow: 0 26px 50px rgba(0, 0, 0, .55);
  }
  .primary-nav[data-open] {
    display: block;
    animation: navDrop .22s var(--ease) both;
  }
  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px var(--edge) 18px;
  }
  .primary-nav__item {
    border-bottom: 1px solid var(--line);
  }
  .primary-nav__item:last-child { border-bottom: 0; }
  .primary-nav__link {
    display: flex;
    align-items: baseline;
    padding: 14px 12px;
    font-size: 17px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }
  .primary-nav__link:hover { border-left-color: rgba(0, 229, 255, .6); border-bottom: 0; }
  .primary-nav__link[aria-current="page"] {
    border-bottom: 0;
    border-left-color: var(--red);
  }
  .primary-nav__index { font-size: 10.5px; }

  .nav-toggle { display: inline-flex; margin-left: auto; }

  .grid--12 { grid-template-columns: minmax(0, 1fr); }
  .col-4, .col-6, .col-8, .col-12 { grid-column: span 1; }

  .footer__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer__brand { grid-column: 1 / -1; }
  .footer__ghost { font-size: clamp(2.4rem, 13vw, 5rem); }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .brand__mark { width: 34px; height: 34px; font-size: 14px; }
  .brand__name { font-size: 17px; }
  .brand__sub { font-size: 8.5px; letter-spacing: .18em; }
  .nav-toggle { padding: 8px 10px; font-size: 10.5px; }
  .nav-toggle__text { display: none; }

  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer__contact-row { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .footer__contact-key { color: var(--gold); }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .footer__meta { gap: 12px; }

  .toc {
    position: static;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 12px;
  }
  .toc__link { margin-left: 0; border-left: 0; padding-left: 0; }
  .toc__link[aria-current="true"] { color: var(--cyan); }
}

/* ---------- 7. 动效 ---------- */
@keyframes tickerPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 3px rgba(226, 0, 26, .18); }
  50% { opacity: .5; box-shadow: 0 0 0 6px rgba(226, 0, 26, .06); }
}
@keyframes navDrop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .ticker__dot { animation: none; }
  .to-top { transform: none; }
  .scroll-progress__bar { transition: none; }
}

@media print {
  .site-header, .site-footer, .to-top, .scroll-progress, .toc { display: none !important; }
  body { background: #fff; color: #0B0E14; }
}