/* =========================================================
   安博看台 · 共享样式 /assets/site.css
   夜间看台 + 数据台：近单色深底、青金双高亮、长卷式层级
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background-color: #0B0F0D;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(16px, 0.35vw + 15px, 17.5px);
  line-height: 1.75;
  color: var(--mist);
  background-color: var(--ink);
  background-image:
    radial-gradient(880px 520px at 82% -8%, rgba(61, 242, 208, 0.055), transparent 68%),
    radial-gradient(680px 460px at 2% 2%, rgba(230, 180, 90, 0.045), transparent 70%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

a { color: inherit; }

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 品牌色 */
  --ink: #0B0F0D;
  --moss: #10231C;
  --turf: #17382C;
  --cyan: #3DF2D0;
  --gold: #E6B45A;
  --crimson: #7A2E35;
  --slate: #5B6E8C;
  --mist: #E8F0EC;
  --sage: #9BB0A6;
  --line: #2A4A3E;

  /* 透明度衍生 */
  --cyan-soft: rgba(61, 242, 208, 0.14);
  --cyan-dim: rgba(61, 242, 208, 0.42);
  --gold-soft: rgba(230, 180, 90, 0.14);

  /* 字体 */
  --font-display: "Oswald", "Barlow Condensed", "Noto Sans SC", "Source Han Sans SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo,
    Consolas, "Courier New", monospace;

  /* 形状 */
  --radius-s: 6px;
  --radius-m: 14px;
  --radius-l: 26px;

  /* 尺度 */
  --shell: 1320px;
  --pad-x: clamp(16px, 4vw, 44px);
  --tr: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.03em;
  color: #fff;
  text-transform: uppercase;
  text-wrap: balance;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

strong { color: #fff; font-weight: 600; }

.display-xl { font-size: clamp(2.5rem, 6vw, 5.5rem); letter-spacing: 0.02em; }
.display-l  { font-size: clamp(1.9rem, 4vw, 3.4rem); }
.section-title { font-size: clamp(1.6rem, 3vw, 2.6rem); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.rule {
  height: 1px;
  border: 0;
  margin: clamp(26px, 4vw, 48px) 0;
  background: var(--line);
}

/* ---------- 4. 布局 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

#main-content {
  scroll-margin-top: clamp(96px, 13vh, 140px);
}

.stack {
  display: grid;
  gap: var(--gap, 20px);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* ---------- 5. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(16, 35, 28, 0.98), rgba(11, 15, 13, 0.97));
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.skip-link {
  position: absolute;
  left: 14px;
  top: -72px;
  z-index: 200;
  padding: 11px 20px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  transition: top var(--tr);
}

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

/* 上层信息带 */
.header-deck {
  background: var(--moss);
  border-bottom: 1px solid var(--line);
}

.deck-inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  padding-block: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

.deck-note {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 1 auto;
  min-width: 0;
  margin: 0;
  color: var(--sage);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.deck-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--cyan-soft);
}

@media (prefers-reduced-motion: no-preference) {
  .deck-dot { animation: deckPulse 3s ease-in-out infinite; }
}

@keyframes deckPulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--cyan-soft); }
  50%      { box-shadow: 0 0 0 7px rgba(61, 242, 208, 0.05); }
}

.deck-links {
  flex: none;
  display: flex;
  gap: clamp(10px, 1.6vw, 22px);
  margin-left: auto;
}

.deck-links a {
  position: relative;
  padding-bottom: 2px;
  color: var(--sage);
  text-decoration: none;
  transition: color var(--tr);
}

.deck-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--tr);
}

.deck-links a:hover,
.deck-links a:focus-visible { color: var(--mist); }

.deck-links a:hover::after,
.deck-links a:focus-visible::after { transform: scaleX(1); }

.deck-search {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 340px;
  padding: 7px 12px 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(23, 56, 44, 0.55);
  color: var(--sage);
  font-size: 12.5px;
  text-decoration: none;
  transition: border-color var(--tr), background var(--tr), color var(--tr);
}

.deck-search:hover,
.deck-search:focus-visible {
  border-color: var(--cyan);
  background: rgba(61, 242, 208, 0.08);
  color: var(--mist);
}

.deck-search-icon {
  position: relative;
  flex: none;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.deck-search-icon::after {
  content: "";
  position: absolute;
  right: -4px;
  bottom: -3px;
  width: 6px;
  height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
}

.deck-search-text {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.deck-search-key {
  flex: none;
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 11px;
  line-height: 1.5;
}

/* 下层栏目轨道 */
.rail-inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
  padding-block: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
  color: var(--mist);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(3, 4px);
  align-items: end;
  gap: 3px;
  height: 26px;
}

.brand-mark span {
  display: block;
  width: 4px;
  border-radius: 1px;
  background: var(--cyan);
}

.brand-mark span:nth-child(1) { height: 12px; opacity: 0.5; }
.brand-mark span:nth-child(2) { height: 26px; }
.brand-mark span:nth-child(3) { height: 17px; background: var(--gold); opacity: 0.9; }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-cn {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #fff;
}

.brand-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--sage);
}

.site-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.9vw, 8px);
}

.nav-list a {
  display: block;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--sage);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--tr), background var(--tr), border-color var(--tr);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--mist);
  background: rgba(61, 242, 208, 0.08);
  border-color: var(--cyan-dim);
}

.nav-list a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
  background: var(--cyan);
  border-color: var(--cyan);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  transition: border-color var(--tr), background var(--tr), color var(--tr);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--cyan);
  background: rgba(61, 242, 208, 0.08);
}

.nav-toggle-bars {
  display: grid;
  gap: 4px;
}

.nav-toggle-bars span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--tr), opacity var(--tr);
}

.site-header[data-open] .nav-toggle-bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}

.site-header[data-open] .nav-toggle-bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  pointer-events: none;
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 8vw, 110px);
  background: linear-gradient(180deg, var(--moss) 0%, var(--ink) 88%);
  border-top: 1px solid var(--line);
  color: var(--mist);
}

.footer-stripe {
  height: 3px;
  opacity: 0.7;
  background: linear-gradient(
    90deg,
    var(--cyan) 0%,
    var(--turf) 34%,
    var(--gold) 62%,
    var(--crimson) 84%,
    var(--slate) 100%
  );
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(220px, 1.1fr) minmax(0, 1.5fr) minmax(250px, 1.1fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(32px, 5vw, 62px);
}

.brand--footer .brand-cn { font-size: 20px; }

.footer-tagline {
  margin: 16px 0 0;
  max-width: 30ch;
  font-size: 15px;
  color: var(--sage);
}

.footer-metro {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 40px);
}

.footer-col-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sage);
}

.footer-col ul {
  display: grid;
  gap: 10px;
}

.footer-col a {
  position: relative;
  display: inline-block;
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
}

.footer-col a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--tr);
}

.footer-col a:hover::after,
.footer-col a:focus-visible::after { transform: scaleX(1); }

.contact-list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.contact-list dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
}

.contact-list dd {
  margin: 3px 0 0;
  font-size: 15px;
  word-break: break-word;
}

.footer-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--sage);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 26px;
  padding-block: 18px 26px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.footer-icp {
  color: var(--sage);
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(23, 56, 44, 0.6);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: border-color var(--tr), background var(--tr), color var(--tr), transform var(--tr);
}

.btn:hover { transform: translateY(-2px); border-color: var(--cyan-dim); }
.btn:active { transform: none; }

.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 600;
}

.btn--primary:hover {
  background: #63f7dc;
  border-color: #63f7dc;
}

.btn--gold {
  background: transparent;
  border-color: rgba(230, 180, 90, 0.55);
  color: var(--gold);
}

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

.btn--ghost {
  background: transparent;
}

.btn--ghost:hover {
  background: rgba(61, 242, 208, 0.07);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--sage);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin-inline: 9px;
  color: rgba(155, 176, 166, 0.4);
}

.breadcrumb a {
  color: var(--sage);
  text-decoration: none;
  transition: color var(--tr);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--cyan); }

.breadcrumb [aria-current="page"] { color: var(--mist); }

/* ---------- 9. 展览说明牌 ---------- */
.plate {
  position: relative;
  display: block;
  overflow: hidden;
  padding: clamp(16px, 2.2vw, 26px);
  background: linear-gradient(160deg, var(--turf), rgba(16, 35, 28, 0.85));
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  transition: border-color var(--tr), transform var(--tr), background var(--tr);
}

.plate::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 3px;
  height: 26px;
  border-radius: 0 2px 2px 0;
  background: var(--cyan);
}

.plate:hover {
  border-color: var(--cyan-dim);
  transform: translateY(-3px);
}

/* ---------- 10. 状态标签 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge--live {
  color: var(--cyan);
  background: var(--cyan-soft);
}

.badge--pick {
  color: var(--gold);
  background: var(--gold-soft);
}

.badge--home {
  color: #E4A0A6;
  background: rgba(122, 46, 53, 0.35);
  border-color: rgba(122, 46, 53, 0.85);
}

.badge--away {
  color: #A8B8D0;
  background: rgba(91, 110, 140, 0.26);
  border-color: rgba(91, 110, 140, 0.7);
}

/* ---------- 11. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background-color: var(--moss);
  background-image:
    repeating-linear-gradient(135deg, rgba(61, 242, 208, 0.06) 0 1px, transparent 1px 9px),
    linear-gradient(135deg, var(--turf), var(--moss));
}

.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.media--wide   { aspect-ratio: 21 / 9; }
.media--tall   { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

/* ---------- 12. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 32px);
  bottom: clamp(14px, 3vw, 32px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16, 35, 28, 0.9);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--tr), transform var(--tr), visibility var(--tr),
    border-color var(--tr), color var(--tr);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.to-top[data-show] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover,
.to-top:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .deck-search { max-width: 260px; }
}

@media (max-width: 1000px) {
  .deck-note { display: none; }

  .deck-links { display: none; }

  .deck-inner { padding-block: 8px; }

  .deck-search {
    max-width: none;
    width: 100%;
  }

  .brand-en { display: none; }

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

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin: 0;
    padding: 10px var(--pad-x) 24px;
    background: linear-gradient(180deg, #10231C 0%, #0B0F0D 100%);
    border-bottom: 1px solid var(--line);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 280ms cubic-bezier(0.4, 0, 0.2, 1),
      opacity 180ms ease, visibility 280ms;
  }

  .site-header[data-open] .site-nav {
    max-height: min(74vh, 560px);
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    display: grid;
    gap: 2px;
  }

  .nav-list a {
    padding: 13px 14px;
    border-radius: 10px;
    font-size: 16px;
    border-color: transparent;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}

@media (max-width: 620px) {
  .footer-cols { grid-template-columns: 1fr; }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .brand-cn { font-size: 17px; }

  .to-top { padding: 9px 15px; }
}

/* ---------- 14. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  .plate:hover { transform: none; }
}