/* =========================================================
   皇冠游戏数据 · 共享外壳样式表 /assets/site.css
   夜间数据驾驶舱 · 深空黑 + 金属金 + 冷电蓝
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #05070C;
}

body { margin: 0; }
img, svg, video, canvas { max-width: 100%; height: auto; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, p, figure, blockquote { margin: 0; }
table { border-collapse: collapse; }
hr { border: 0; border-top: 1px solid #22303F; margin: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  --void: #05070C;
  --panel: #0B1119;
  --raised: #131C28;
  --grid: #22303F;

  --ink: #E7EDF5;
  --ink-2: #94A3B4;

  --gold: #D8B45A;
  --gold-hi: #F3DE9B;
  --blue: #3BC7F5;
  --cyan: #5EEAD4;
  --orange: #FF7A2F;
  --violet: #A78BFA;

  --r-xl: 32px;
  --r-lg: 26px;
  --r-md: 20px;
  --r-sm: 14px;
  --r-pill: 999px;

  --gutter: clamp(18px, 4.4vw, 52px);
  --shell-max: 1240px;

  --font-display: "Oswald", "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Noto Sans SC", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基座与中文排版 ---------- */
body {
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(1200px 620px at 80% -12%, rgba(59, 199, 245, 0.075), transparent 62%),
    radial-gradient(900px 520px at 6% 6%, rgba(216, 180, 90, 0.055), transparent 64%),
    var(--void);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(to right, rgba(34, 48, 63, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 48, 63, 0.6) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(circle at 50% 26%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 26%, #000 0%, transparent 78%);
}

#main-content {
  position: relative;
  z-index: 1;
  display: block;
  padding-top: clamp(104px, 13vh, 152px);
}

::selection { background: rgba(216, 180, 90, 0.28); color: #FFFFFF; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 4. 文本工具 ---------- */
.mono,
.index-text,
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.index-text {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.num {
  color: var(--gold);
  text-shadow: 0 0 1px rgba(216, 180, 90, 0.75);
  letter-spacing: 0.01em;
}

.muted { color: var(--ink-2); }

.display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.08;
  text-transform: uppercase;
}

/* ---------- 5. 跳转链接与滚动进度 ---------- */
.skip-link {
  position: absolute;
  top: 8px;
  left: 50%;
  z-index: 130;
  transform: translate(-50%, -170%);
  padding: 11px 22px;
  border-radius: var(--r-pill);
  background: var(--gold);
  color: #05070C;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform 0.24s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translate(-50%, 0); }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 120;
  width: 0;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(59, 199, 245, 0.85), var(--gold));
  box-shadow: 0 0 12px rgba(216, 180, 90, 0.45);
}

/* ---------- 6. 悬浮胶囊头部 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  padding: clamp(10px, 1.7vw, 20px) var(--gutter) 0;
}

.header-shell {
  position: relative;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 10px 14px 10px 18px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  background: rgba(11, 17, 25, 0.82);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  transition: padding 0.32s var(--ease), background-color 0.32s var(--ease),
              border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}

.site-header.is-condensed .header-shell {
  padding: 6px 10px 6px 14px;
  background: rgba(11, 17, 25, 0.95);
  border-color: rgba(34, 48, 63, 0.95);
  box-shadow: 0 18px 46px -30px rgba(0, 0, 0, 0.95);
}

/* 品牌 */
.header-brand {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.brand-glyph {
  flex: none;
  width: 11px;
  height: 11px;
  border-radius: 3px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 1px rgba(216, 180, 90, 0.35), 0 0 14px rgba(216, 180, 90, 0.45);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.09em;
  color: var(--ink);
  white-space: nowrap;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-2);
  white-space: nowrap;
}

.caliber-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 11px;
  border: 1px solid rgba(216, 180, 90, 0.32);
  border-radius: var(--r-pill);
  background: rgba(216, 180, 90, 0.07);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.status-dot {
  flex: none;
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.14);
  animation: dotPulse 2.8s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* 移动导航按钮 */
.nav-toggle {
  grid-column: 2;
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  background: var(--raised);
  color: var(--ink-2);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-toggle:hover { color: var(--gold-hi); border-color: rgba(216, 180, 90, 0.45); }

.nav-toggle-bars {
  position: relative;
  flex: none;
  width: 14px;
  height: 10px;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
  transition: transform 0.26s var(--ease);
}

.nav-toggle-bars::before { top: 1px; }
.nav-toggle-bars::after { bottom: 1px; }

.header-shell[data-open] .nav-toggle-bars::before { transform: translateY(4px) rotate(45deg); }
.header-shell[data-open] .nav-toggle-bars::after { transform: translateY(-4px) rotate(-45deg); }

/* 导航 */
.primary-nav {
  grid-column: 2;
  justify-self: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  color: var(--ink-2);
  font-size: 14px;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.nav-list a:hover {
  color: var(--gold-hi);
  border-color: rgba(216, 180, 90, 0.3);
  background: rgba(216, 180, 90, 0.07);
}

.nav-list a[aria-current="page"] {
  color: var(--gold);
  border-color: rgba(216, 180, 90, 0.5);
  background: rgba(216, 180, 90, 0.11);
}

/* 右侧快捷入口 */
.header-utility {
  grid-column: 3;
  display: flex;
  align-items: center;
  gap: 10px;
}

.season-shortcut {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid rgba(59, 199, 245, 0.35);
  border-radius: var(--r-pill);
  background: rgba(59, 199, 245, 0.08);
  color: var(--blue);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.season-shortcut:hover {
  color: var(--gold-hi);
  border-color: rgba(216, 180, 90, 0.5);
  background: rgba(216, 180, 90, 0.1);
}

/* ---------- 7. 容器与分节 ---------- */
.container {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: 880px; }
.container--wide { max-width: 1440px; }

.section { padding-block: clamp(64px, 9vw, 128px); z-index: 1; position: relative; }
.section--tight { padding-block: clamp(40px, 5.5vw, 76px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px 32px;
  margin-bottom: clamp(30px, 4vw, 56px);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--grid);
}

.section-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
}

.section-note {
  max-width: 46ch;
  font-size: 14px;
  color: var(--ink-2);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb { margin-bottom: clamp(24px, 3vw, 40px); }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--ink-2);
}

.breadcrumb-list li { display: inline-flex; align-items: center; }
.breadcrumb-list li:not(:first-child)::before {
  content: "/";
  margin-right: 10px;
  color: var(--grid);
}

.breadcrumb-list a { color: var(--ink-2); text-decoration: none; }
.breadcrumb-list a:hover { color: var(--gold-hi); }
.breadcrumb-list [aria-current="page"] { color: var(--gold); }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 24px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  background: var(--raised);
  color: var(--ink);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.22s ease, border-color 0.22s ease,
              background-color 0.22s ease, transform 0.22s var(--ease);
}

.btn:hover {
  color: var(--gold-hi);
  border-color: rgba(216, 180, 90, 0.55);
  transform: translateY(-1px);
}

.btn--primary {
  color: var(--gold-hi);
  border-color: rgba(216, 180, 90, 0.45);
  background: linear-gradient(180deg, rgba(216, 180, 90, 0.17), rgba(216, 180, 90, 0.05));
}

.btn--ghost { background: transparent; }

.btn--blue {
  color: var(--blue);
  border-color: rgba(59, 199, 245, 0.4);
  background: rgba(59, 199, 245, 0.07);
}

/* ---------- 10. 面板与数据块 ---------- */
.panel {
  position: relative;
  padding: clamp(20px, 2.6vw, 34px);
  border: 1px solid var(--grid);
  border-radius: var(--r-lg);
  background: var(--panel);
}

.panel--raised { background: var(--raised); }
.panel--flush { padding: 0; overflow: hidden; }

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--grid);
}

.panel-title {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1;
  color: var(--gold);
  text-shadow: 0 0 1px rgba(216, 180, 90, 0.75);
}

.metric-label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}

/* ---------- 11. 栅格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2vw, 26px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.grid--asym {
  grid-template-columns: minmax(210px, 0.85fr) minmax(0, 2fr);
  gap: clamp(24px, 4vw, 64px);
}

.grid--asym-right {
  grid-template-columns: minmax(0, 2fr) minmax(210px, 0.9fr);
  gap: clamp(24px, 4vw, 64px);
}

/* ---------- 12. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  background: rgba(19, 28, 40, 0.72);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.tag--gold { color: var(--gold); border-color: rgba(216, 180, 90, 0.4); background: rgba(216, 180, 90, 0.08); }
.tag--blue { color: var(--blue); border-color: rgba(59, 199, 245, 0.35); background: rgba(59, 199, 245, 0.08); }
.tag--cyan { color: var(--cyan); border-color: rgba(94, 234, 212, 0.35); background: rgba(94, 234, 212, 0.08); }
.tag--orange { color: var(--orange); border-color: rgba(255, 122, 47, 0.4); background: rgba(255, 122, 47, 0.08); }
.tag--violet { color: var(--violet); border-color: rgba(167, 139, 250, 0.38); background: rgba(167, 139, 250, 0.08); }

/* ---------- 13. 时间轴 ---------- */
.timeline { position: relative; }

.timeline-track {
  position: relative;
  display: flex;
  gap: clamp(10px, 1.8vw, 18px);
  padding: 18px 2px 24px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--grid) transparent;
}

.timeline-track::-webkit-scrollbar { height: 4px; }
.timeline-track::-webkit-scrollbar-track { background: transparent; }
.timeline-track::-webkit-scrollbar-thumb { background: var(--grid); border-radius: 4px; }

.timeline-node {
  flex: 0 0 auto;
  scroll-snap-align: start;
  min-width: 152px;
  padding: 14px 16px;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background: var(--panel);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.24s ease, background-color 0.24s ease;
}

.timeline-node:hover { border-color: rgba(59, 199, 245, 0.5); }

.timeline-node[aria-current="true"] {
  border-color: rgba(216, 180, 90, 0.6);
  background: rgba(216, 180, 90, 0.09);
}

.timeline-range {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--gold);
  text-shadow: 0 0 1px rgba(216, 180, 90, 0.7);
}

.timeline-label {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- 14. 可展开内容组 ---------- */
.accordion { border-top: 1px solid var(--grid); }
.accordion-item { border-bottom: 1px solid var(--grid); }

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 4px;
  color: var(--ink);
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s ease;
}

.accordion-trigger:hover { color: var(--gold-hi); }

.accordion-index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.accordion-title { flex: 1 1 auto; min-width: 0; }

.accordion-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.accordion-mark::before,
.accordion-mark::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform 0.26s var(--ease), opacity 0.22s ease;
}

.accordion-mark::before { left: 0; right: 0; top: 50%; height: 1px; transform: translateY(-50%); }
.accordion-mark::after { top: 0; bottom: 0; left: 50%; width: 1px; transform: translateX(-50%); }

.accordion-trigger[aria-expanded="true"] .accordion-mark::after {
  opacity: 0;
  transform: translateX(-50%) scaleY(0);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.34s var(--ease), opacity 0.26s ease;
}

.accordion-panel[data-open] { opacity: 1; }

.accordion-body {
  max-width: 68ch;
  padding: 0 4px 24px;
  color: var(--ink-2);
  font-size: 15px;
}

/* ---------- 15. 数据表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background: var(--panel);
}

.data-table {
  width: 100%;
  min-width: 640px;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}

.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--raised);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.data-table tbody tr:nth-child(even) { background: rgba(19, 28, 40, 0.5); }
.data-table tbody tr:hover { background: rgba(59, 199, 245, 0.07); }
.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table td[data-type="num"] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

/* ---------- 16. 筛选 chip ---------- */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 8px 16px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  background: var(--raised);
  color: var(--ink-2);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.chip:hover { color: var(--gold-hi); border-color: rgba(216, 180, 90, 0.4); }

.chip[aria-pressed="true"] {
  color: var(--blue);
  border-color: rgba(59, 199, 245, 0.6);
  background: rgba(59, 199, 245, 0.1);
}

/* ---------- 17. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--grid);
  border-radius: var(--r-lg);
  background:
    linear-gradient(150deg, rgba(19, 28, 40, 0.95), rgba(11, 17, 25, 0.98) 72%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__caption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 4px 12px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  background: rgba(5, 7, 12, 0.72);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 18. 显现动画 ---------- */
.js-ready .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s var(--ease);
}

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

/* ---------- 19. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(72px, 10vw, 140px);
  border-top: 1px solid rgba(216, 180, 90, 0.45);
  background: linear-gradient(180deg, rgba(11, 17, 25, 0.92), var(--void) 62%);
}

.footer-inner {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(44px, 6vw, 76px) var(--gutter) 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(140px, 1fr));
  gap: clamp(28px, 4vw, 56px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-claim {
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-2);
}

.footer-claim--muted {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(148, 163, 180, 0.7);
}

.footer-col { min-width: 0; }

.footer-col-title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover { color: var(--gold-hi); }

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 18px;
}

.footer-contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px 8px;
}

.footer-field {
  flex: 1 0 100%;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(148, 163, 180, 0.6);
}

.footer-value {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-2);
  word-break: break-word;
}

.copy-btn {
  flex: none;
  padding: 3px 10px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.copy-btn:hover { color: var(--gold-hi); border-color: rgba(216, 180, 90, 0.5); }

.copy-btn[data-state="done"] {
  color: var(--cyan);
  border-color: rgba(94, 234, 212, 0.5);
  background: rgba(94, 234, 212, 0.08);
}

.copy-btn[data-state="fail"] {
  color: var(--orange);
  border-color: rgba(255, 122, 47, 0.5);
  background: rgba(255, 122, 47, 0.08);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  margin-top: clamp(40px, 5vw, 68px);
  padding-top: 20px;
  border-top: 1px solid var(--grid);
}

.footer-legal,
.footer-year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(148, 163, 180, 0.75);
}

/* ---------- 20. 响应式 ---------- */
@media (max-width: 1080px) {
  .grid--asym,
  .grid--asym-right { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .header-shell {
    grid-template-columns: 1fr auto auto;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 26px;
  }

  .header-brand { grid-column: 1; }
  .nav-toggle { grid-column: 2; }
  .header-utility { grid-column: 3; }

  .brand-sub { display: none; }
  .caliber-tag { display: none; }

  .primary-nav {
    grid-column: 1 / -1;
    justify-self: stretch;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.34s var(--ease), opacity 0.24s ease;
  }

  .header-shell[data-open] .primary-nav {
    max-height: min(70vh, 460px);
    overflow-y: auto;
    opacity: 1;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 6px 0 10px;
  }

  .nav-list a {
    padding: 12px 14px;
    border-radius: 16px;
    font-size: 15px;
  }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--2 { grid-template-columns: minmax(0, 1fr); }
  .section-head { align-items: flex-start; }
}

@media (max-width: 560px) {
  .season-shortcut { padding: 7px 12px; font-size: 12px; }
  .nav-toggle-label { display: none; }
  .nav-toggle { padding: 9px 12px; }
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- 21. 减弱动效 ---------- */
@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;
    transition-delay: 0ms !important;
  }

  .js-ready .reveal { opacity: 1; transform: none; }
  .scroll-progress { transition: none; }
}