/* ============================================================
   天行体育看台 · 共享样式 /assets/site.css
   看台台阶 · 斜切档案 · 贺兰石青 × 沙漠金
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --tz-slate: #16333C;
  --tz-slate-mid: #24505C;
  --tz-gold: #C9922F;
  --tz-gold-soft: #E8C57A;
  --tz-whistle: #E2542C;
  --tz-turf: #2E7D52;
  --tz-chalk: #F7F3EA;
  --tz-ink: #14181B;
  --tz-lime: #D8D2C4;
  --tz-night: #0B1A20;

  --tz-ink-70: rgba(20, 24, 27, .70);
  --tz-ink-45: rgba(20, 24, 27, .45);
  --tz-line-light: rgba(216, 210, 196, .24);

  --tz-shadow: 8px 8px 0 var(--tz-ink);
  --tz-shadow-hover: 5px 5px 0 var(--tz-ink);
  --tz-shadow-sm: 4px 4px 0 var(--tz-ink);

  --tz-border: 2px solid var(--tz-ink);
  --tz-border-gold: 2px solid var(--tz-gold);

  --tz-font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  --tz-font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  --tz-font-mono: ui-monospace, "SFMono-Regular", "IBM Plex Mono", Menlo,
    Consolas, "Courier New", monospace;

  --tz-shell: 1360px;
  --tz-gutter: clamp(16px, 4vw, 56px);
  --tz-radius: 2px;
}

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

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

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

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

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

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

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

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--tz-font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--tz-ink);
  background-color: var(--tz-chalk);
  background-image:
    repeating-linear-gradient(
      90deg,
      rgba(20, 24, 27, .035) 0 1px,
      transparent 1px 96px
    );
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

@media (min-width: 768px) {
  body { font-size: 17px; }
}

h1, h2, h3, h4 {
  font-family: var(--tz-font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

main { display: block; }

#main-content { scroll-margin-top: 24px; }

.shell {
  width: 100%;
  max-width: var(--tz-shell);
  margin-inline: auto;
  padding-inline: var(--tz-gutter);
}

.section { padding-block: clamp(40px, 6vw, 84px); }

.rule {
  height: 0;
  border: 0;
  border-top: 2px solid var(--tz-ink);
}

.eyebrow {
  display: inline-block;
  font-family: var(--tz-font-mono);
  font-size: 12px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--tz-gold);
}

.mono-label {
  font-family: var(--tz-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tz-ink-45);
}

.big-number {
  font-family: var(--tz-font-mono);
  font-weight: 700;
  font-size: clamp(3.2rem, 9vw, 6rem);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--tz-gold);
}

.prose { max-width: 62ch; }
.prose > * + * { margin-top: 1.2em; }
.prose h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.28; }
.prose h3 { font-size: 1.2rem; letter-spacing: -0.02em; }
.prose ul, .prose ol { padding-left: 1.3em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose a { border-bottom: 2px solid var(--tz-gold); }
.prose a:hover { background: var(--tz-gold-soft); }
.prose strong { font-weight: 800; }
.prose blockquote {
  border-left: 4px solid var(--tz-gold);
  padding-left: 18px;
  color: var(--tz-slate);
}

/* ---------- 4. 跳转链接 / 阅读进度 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: var(--tz-gutter);
  z-index: 400;
  transform: translateY(-140%);
  padding: 12px 20px;
  background: var(--tz-whistle);
  color: #fff;
  font-family: var(--tz-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  border: 2px solid var(--tz-ink);
  transition: transform .18s ease;
}

.skip-link:focus-visible {
  transform: translateY(8px);
  outline-color: var(--tz-ink);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 300;
  background: rgba(20, 24, 27, .10);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--tz-whistle), var(--tz-gold));
}

/* ---------- 5. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 120;
  background: var(--tz-chalk);
  border-bottom: 2px solid var(--tz-ink);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
  padding-block: 14px;
}

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

.brand__mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  background: var(--tz-slate);
  color: var(--tz-gold-soft);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 76%, 76% 100%, 0 100%);
  transition: background .18s ease, color .18s ease;
}

.brand:hover .brand__mark {
  background: var(--tz-gold);
  color: var(--tz-ink);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.brand__name {
  font-family: var(--tz-font-display);
  font-size: clamp(17px, 2.1vw, 20px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--tz-slate);
}

.brand__note {
  font-family: var(--tz-font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tz-ink-45);
  white-space: nowrap;
}

/* 移动端开关 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--tz-gold-soft);
  color: var(--tz-ink);
  border: 2px solid var(--tz-ink);
  box-shadow: var(--tz-shadow-sm);
  font-family: var(--tz-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}

.nav-toggle:hover { background: var(--tz-gold); }
.nav-toggle:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--tz-ink); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--tz-ink);
}

.nav-toggle__bars span:nth-child(2) { width: 68%; }

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

.nav-toggle[aria-expanded="true"] {
  background: var(--tz-slate);
  color: var(--tz-gold-soft);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span { background: var(--tz-gold-soft); }

/* 主导航：移动端抽屉 */
.primary-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: auto;
  width: min(86vw, 380px);
  z-index: 260;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 22px var(--tz-gutter) 32px;
  background: var(--tz-slate);
  border-left: 2px solid var(--tz-ink);
  color: var(--tz-chalk);
  overflow-y: auto;
  transform: translateX(105%);
  visibility: hidden;
  transition: transform .26s cubic-bezier(.4, 0, .2, 1), visibility .26s linear;
}

.primary-nav[data-open] {
  transform: translateX(0);
  visibility: visible;
}

body.nav-open { overflow: hidden; }

.primary-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.primary-nav__item { display: block; }

.primary-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--tz-line-light);
  font-family: var(--tz-font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--tz-chalk);
  transition: color .16s ease;
}

.primary-nav__link::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--tz-gold);
  clip-path: polygon(0 0, 100% 0, 96% 100%, 0 100%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s ease;
}

.primary-nav__link:hover::before,
.primary-nav__link:focus-visible::before,
.primary-nav__link[aria-current="page"]::before { transform: scaleX(1); }

.primary-nav__link:hover,
.primary-nav__link:focus-visible,
.primary-nav__link[aria-current="page"] { color: var(--tz-ink); }

.primary-nav__num {
  position: relative;
  z-index: 1;
  font-family: var(--tz-font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--tz-gold-soft);
  transition: color .16s ease;
}

.primary-nav__link:hover .primary-nav__num,
.primary-nav__link[aria-current="page"] .primary-nav__num { color: var(--tz-slate); }

.primary-nav__label {
  position: relative;
  z-index: 1;
}

.primary-nav__foot {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--tz-line-light);
}

.primary-nav__hint {
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--tz-lime);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  background: var(--tz-gold);
  color: var(--tz-ink);
  border: 2px solid var(--tz-ink);
  box-shadow: var(--tz-shadow-sm);
  font-family: var(--tz-font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}

.nav-cta:hover {
  background: var(--tz-gold-soft);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--tz-ink);
}

.nav-cta:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--tz-ink);
}

/* 抽屉关闭 */
.nav-close {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  align-self: flex-end;
  padding: 8px 12px;
  border: 2px solid var(--tz-gold);
  color: var(--tz-gold-soft);
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: background .16s ease, color .16s ease;
}

.nav-close:hover { background: var(--tz-gold); color: var(--tz-ink); }

.nav-close__x {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
}

.nav-close__x::before,
.nav-close__x::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
}

.nav-close__x::before { transform: rotate(45deg); }
.nav-close__x::after { transform: rotate(-45deg); }

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

/* 桌面端导航 */
@media (min-width: 1024px) {
  .nav-toggle { display: none; }
  .nav-close { display: none; }

  .primary-nav {
    position: static;
    inset: auto;
    width: auto;
    margin-left: auto;
    z-index: auto;
    flex-direction: row;
    align-items: center;
    gap: 4px;
    padding: 0;
    background: transparent;
    border-left: 0;
    color: var(--tz-ink);
    overflow: visible;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .primary-nav[data-open] { transform: none; }

  .primary-nav__list {
    flex-direction: row;
    align-items: center;
    gap: 2px;
  }

  .primary-nav__link {
    gap: 7px;
    padding: 10px 12px;
    border-bottom: 0;
    font-size: 15px;
    color: var(--tz-ink);
  }

  .primary-nav__link::before {
    clip-path: polygon(0 0, 100% 0, 93% 100%, 0 100%);
  }

  .primary-nav__link[aria-current="page"] {
    box-shadow: inset 0 -3px 0 var(--tz-gold);
  }

  .primary-nav__num {
    font-size: 10px;
    color: var(--tz-gold);
  }

  .primary-nav__foot {
    flex-direction: row;
    align-items: center;
    gap: 0;
    margin: 0 0 0 14px;
    padding: 0;
    border-top: 0;
  }

  .primary-nav__hint { display: none; }

  .nav-cta {
    padding: 10px 16px;
    font-size: 14px;
  }
}

/* ---------- 6. 速览条 ---------- */
.ticker {
  background: var(--tz-slate);
  color: var(--tz-chalk);
  border-top: 2px solid var(--tz-ink);
}

.ticker__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 36px;
  overflow: hidden;
}

.ticker__tag {
  flex: 0 0 auto;
  padding: 3px 8px;
  background: var(--tz-whistle);
  color: #fff;
  font-family: var(--tz-font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.5;
}

.ticker__viewport {
  flex: 1 1 auto;
  position: relative;
  height: 36px;
  display: flex;
  align-items: center;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 20px, #000 calc(100% - 20px), transparent);
  mask-image: linear-gradient(90deg, transparent, #000 20px, #000 calc(100% - 20px), transparent);
}

.ticker__track {
  display: flex;
  align-items: center;
  gap: 0;
  width: max-content;
  animation: tz-ticker 42s linear infinite;
}

.ticker__group {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-right: 18px;
}

.ticker__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 13px;
  line-height: 1.4;
  color: rgba(247, 243, 234, .92);
}

.ticker__dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--tz-gold-soft);
  flex: 0 0 auto;
}

.ticker__sep {
  color: var(--tz-gold);
  font-size: 12px;
}

.ticker__stamp {
  flex: 0 0 auto;
  font-family: var(--tz-font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--tz-gold-soft);
}

@keyframes tz-ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (max-width: 719px) {
  .ticker__stamp { display: none; }
  .ticker__tag { font-size: 9px; letter-spacing: 0.12em; }
}

@media (prefers-reduced-motion: reduce) {
  .ticker__track { animation: none; }
  .ticker__viewport { overflow-x: auto; }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--tz-night);
  color: var(--tz-chalk);
  border-top: 2px solid var(--tz-ink);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(
      180deg,
      rgba(36, 80, 92, .30) 0 2px,
      transparent 2px 58px
    );
}

.site-footer :focus-visible {
  outline-color: var(--tz-gold-soft);
}

.footer-fence {
  position: relative;
  z-index: 1;
  height: 22px;
  border-bottom: 2px solid var(--tz-gold);
  background-image:
    repeating-linear-gradient(90deg, var(--tz-gold) 0 3px, transparent 3px 28px),
    linear-gradient(180deg, var(--tz-slate-mid), var(--tz-night));
  opacity: .9;
}

.footer__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  padding-block: clamp(40px, 6vw, 72px);
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 900px) {
  .footer__inner {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: 56px;
  }
}

.footer__lead { max-width: 340px; }

.footer__eyebrow {
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--tz-gold);
}

.footer__claim {
  margin-block: 12px 22px;
  font-family: var(--tz-font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.03em;
  color: var(--tz-chalk);
  max-width: 20ch;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 24px;
}

@media (min-width: 640px) {
  .footer__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.footer__col { min-width: 0; }

.footer__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--tz-line-light);
  font-family: var(--tz-font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tz-gold-soft);
}

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

.footer__link {
  display: inline-block;
  font-size: 14px;
  line-height: 1.55;
  color: rgba(247, 243, 234, .86);
  word-break: break-word;
  transition: color .15s ease, transform .15s ease;
}

a.footer__link:hover,
a.footer__link:focus-visible {
  color: var(--tz-gold-soft);
  transform: translateX(3px);
}

.footer__addr {
  display: inline-block;
  max-width: 20ch;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(247, 243, 234, .66);
}

.footer__icp {
  display: inline-block;
  font-family: var(--tz-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(247, 243, 234, .66);
}

.footer__bar {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 18px 26px;
  border-top: 1px solid var(--tz-line-light);
  font-family: var(--tz-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 243, 234, .70);
}

.footer__status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.footer__pulse {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--tz-turf);
  animation: tz-pulse 2.6s ease-out infinite;
}

@keyframes tz-pulse {
  0% { box-shadow: 0 0 0 0 rgba(46, 125, 82, .62); }
  70% { box-shadow: 0 0 0 10px rgba(46, 125, 82, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 125, 82, 0); }
}

.footer__copy { margin: 0; }

.footer__watermark {
  position: relative;
  z-index: 0;
  padding-inline: var(--tz-gutter);
  padding-bottom: clamp(14px, 3vw, 32px);
  font-family: var(--tz-font-mono);
  font-weight: 700;
  font-size: clamp(2.6rem, 17vw, 14rem);
  line-height: 0.8;
  letter-spacing: -0.04em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 146, 47, .34);
  user-select: none;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .footer__pulse { animation: none; }
}

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border: 2px solid var(--tz-ink);
  border-radius: var(--tz-radius);
  background: var(--tz-chalk);
  color: var(--tz-ink);
  font-family: var(--tz-font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.3;
  box-shadow: var(--tz-shadow);
  transition: transform .16s ease, box-shadow .16s ease,
    background .16s ease, color .16s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--tz-ink);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 3px 3px 0 var(--tz-ink);
}

.btn--gold { background: var(--tz-gold); }
.btn--gold:hover { background: var(--tz-gold-soft); }

.btn--whistle { background: var(--tz-whistle); color: #fff; }
.btn--whistle:hover { background: #c9461f; }

.btn--ghost { background: transparent; }
.btn--ghost:hover { background: var(--tz-gold-soft); }

.btn--night { background: var(--tz-slate); color: var(--tz-chalk); }
.btn--night:hover { background: var(--tz-slate-mid); }

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--tz-ink-45);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--tz-gold);
}

.breadcrumb__item a {
  color: var(--tz-slate);
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease, color .15s ease;
}

.breadcrumb__item a:hover {
  color: var(--tz-ink);
  border-bottom-color: var(--tz-gold);
}

.breadcrumb__item[aria-current="page"] { color: var(--tz-ink); }

/* ---------- 10. 网格 ---------- */
.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }

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

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

@media (min-width: 900px) {
  .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; }
}

/* ---------- 11. 档案卡 / 标签 ---------- */
.card {
  position: relative;
  padding: 22px clamp(18px, 2.4vw, 28px);
  background: var(--tz-chalk);
  border: var(--tz-border);
  border-radius: var(--tz-radius);
  box-shadow: var(--tz-shadow);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--tz-shadow-hover);
}

.card__label {
  display: inline-block;
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tz-slate-mid);
}

.card__meta {
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tz-ink-45);
}

.card--night {
  background: var(--tz-slate);
  color: var(--tz-chalk);
  border-color: var(--tz-ink);
}

.card--night .card__label { color: var(--tz-gold-soft); }
.card--night .card__meta { color: rgba(247, 243, 234, .6); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 2px solid var(--tz-ink);
  border-radius: var(--tz-radius);
  background: var(--tz-gold-soft);
  color: var(--tz-ink);
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.4;
}

.tag--turf { background: var(--tz-turf); color: #fff; border-color: var(--tz-turf); }
.tag--whistle { background: var(--tz-whistle); color: #fff; border-color: var(--tz-whistle); }
.tag--ghost { background: transparent; color: var(--tz-ink); }

/* ---------- 12. 图片容器基础 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: var(--tz-border);
  border-radius: var(--tz-radius);
  background-color: var(--tz-slate);
  background-image:
    repeating-linear-gradient(
      135deg,
      rgba(247, 243, 234, .07) 0 2px,
      transparent 2px 16px
    ),
    linear-gradient(140deg, var(--tz-slate-mid), var(--tz-night));
  box-shadow: var(--tz-shadow);
}

.media-frame > img,
.media-frame > picture,
.media-frame > .media-frame__inner {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__inner { background: transparent; }

.media-frame--cinema { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 4 / 5; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px;
  background-image: linear-gradient(0deg, rgba(11, 26, 32, .94), rgba(11, 26, 32, 0));
  color: var(--tz-chalk);
  font-family: var(--tz-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.5;
}

@media (max-width: 719px) {
  .media-frame { box-shadow: var(--tz-shadow-sm); }
}

/* ---------- 13. 滚动显现 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
}

.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .skip-link,
  .btn,
  .card,
  .nav-toggle,
  .nav-cta,
  .primary-nav,
  .primary-nav__link::before,
  .footer__link {
    transition: none;
  }

  .card:hover,
  .card:focus-within { transform: none; }
}