/* ==========================================================================
   微玩体育赛场 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================================== */

:root {
  --c-ink: #0A1D3A;
  --c-teal: #0E3B45;
  --c-indigo: #261A4F;
  --c-wine: #541B2D;
  --c-snow: #F6F8FC;
  --c-mist: #C7D2E2;
  --c-orange: #FF6A2A;
  --c-lime: #9BFF5A;
  --c-gold: #F2B84B;

  --ink-soft: #26334A;
  --ink-mute: #4A5A74;
  --line-soft: rgba(10, 29, 58, 0.12);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-num: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-sm: 14px;
  --radius-pill: 999px;

  --shell-max: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 76px;

  --ease: cubic-bezier(0.3, 0.7, 0.2, 1);
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 0.42vw + 14px, 17px);
  line-height: 1.8;
  color: var(--ink-soft);
  background-color: var(--c-snow);
  background-image:
    radial-gradient(60% 46% at 88% -8%, rgba(38, 26, 79, 0.14), transparent 70%),
    radial-gradient(48% 40% at 4% 2%, rgba(14, 59, 69, 0.12), transparent 68%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
address { font-style: normal; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--c-ink);
}
h1 { font-size: clamp(2.8rem, 5.6vw, 5.6rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3rem); line-height: 1.18; }
h3 { font-size: 1.35rem; line-height: 1.38; letter-spacing: -0.01em; }

::selection { background: var(--c-lime); color: var(--c-ink); }

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--c-orange);
  outline-offset: 3px;
  border-radius: 8px;
}

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

#main-content { display: block; scroll-margin-top: calc(var(--header-h) + 16px); }
#main-content:focus { outline: none; }

/* ---------- 跳过导航 ---------- */
.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -120px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background: var(--c-lime);
  color: var(--c-ink);
  font-weight: 800;
  font-size: 0.9rem;
  text-decoration: none;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 0; }

/* ==========================================================================
   头部
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  color: var(--c-snow);
  background-color: transparent;
  background-image: linear-gradient(180deg,
      rgba(10, 29, 58, 0.95) 0%,
      rgba(10, 29, 58, 0.74) 58%,
      rgba(10, 29, 58, 0) 100%);
  border-bottom: 1px solid transparent;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.site-header[data-scrolled] {
  background-color: var(--c-ink);
  background-image: linear-gradient(180deg, #0A1D3A 0%, #0B2144 100%);
  border-bottom-color: rgba(199, 210, 226, 0.22);
  box-shadow: 0 18px 36px -24px rgba(4, 12, 26, 0.95);
}

.header-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.2vw, 30px);
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 12px var(--gutter);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--c-snow);
  flex: 0 0 auto;
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--c-orange), var(--c-gold) 42%, var(--c-lime) 74%, var(--c-teal) 100%);
  box-shadow: inset 0 0 0 2px rgba(10, 29, 58, 0.5), 0 8px 18px -10px rgba(255, 106, 42, 0.9);
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: var(--c-ink);
  box-shadow: 0 0 0 2px rgba(246, 248, 252, 0.9);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}
.brand-sub {
  font-family: var(--font-num);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  color: var(--c-mist);
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}
.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-item { display: block; }

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 700;
  white-space: nowrap;
  text-decoration: none;
  color: rgba(246, 248, 252, 0.82);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--c-snow);
  background: rgba(246, 248, 252, 0.1);
}
.nav-link[aria-current="page"] {
  color: var(--c-ink);
  background: var(--c-lime);
  box-shadow: 0 6px 16px -10px rgba(155, 255, 90, 0.9);
}

.header-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--c-orange);
  color: var(--c-ink);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 12px 24px -14px rgba(255, 106, 42, 0.95);
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease);
}
.header-cta::after { content: "\2192"; font-family: var(--font-num); }
.header-cta:hover { transform: translateY(-2px); background: var(--c-gold); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px 8px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(199, 210, 226, 0.34);
  background: rgba(246, 248, 252, 0.08);
  color: var(--c-snow);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav-toggle[aria-expanded="true"] {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-ink);
}
.nav-toggle-text { line-height: 1; }

.nav-toggle-bars { position: relative; display: block; width: 16px; height: 10px; }
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease), top 0.18s var(--ease);
}
.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { top: 8px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { top: 4px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { top: 4px; transform: rotate(-45deg); }

.scroll-progress {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: rgba(199, 210, 226, 0.16);
  pointer-events: none;
}
.scroll-progress-fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--c-orange), var(--c-gold) 52%, var(--c-lime));
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  padding: 0 var(--gutter) clamp(28px, 5vw, 56px);
  color: var(--c-snow);
}

.footer-panel {
  position: relative;
  overflow: hidden;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(26px, 4vw, 60px) clamp(20px, 4vw, 56px) clamp(20px, 3vw, 34px);
  border-radius: clamp(20px, 3vw, 34px);
  background-color: var(--c-ink);
  background-image:
    radial-gradient(120% 100% at 6% -10%, rgba(38, 26, 79, 0.95), rgba(38, 26, 79, 0) 58%),
    radial-gradient(92% 92% at 100% 0%, rgba(14, 59, 69, 0.95), rgba(14, 59, 69, 0) 62%);
  box-shadow: 0 44px 84px -52px rgba(6, 16, 34, 0.95);
}

.footer-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(20px, 4vw, 56px);
  right: clamp(20px, 4vw, 56px);
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--c-orange), var(--c-gold) 45%, var(--c-lime) 82%, rgba(155, 255, 90, 0));
}

.footer-panel::after {
  content: "";
  position: absolute;
  right: -130px;
  bottom: -170px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  border: 1px solid rgba(242, 184, 75, 0.22);
  box-shadow: 0 0 0 34px rgba(242, 184, 75, 0.06), 0 0 0 70px rgba(242, 184, 75, 0.035);
  pointer-events: none;
}

.footer-top {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
  gap: clamp(24px, 4vw, 64px);
}

.footer-brand-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.95rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--c-snow);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.footer-brand-link:hover { color: var(--c-lime); border-bottom-color: rgba(155, 255, 90, 0.5); }

.footer-tagline {
  margin-top: 0.8rem;
  max-width: 30ch;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--c-mist);
}

.footer-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1.4rem;
}
.footer-stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 96px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(246, 248, 252, 0.06);
  border: 1px solid rgba(199, 210, 226, 0.16);
}
.footer-stat-num {
  font-family: var(--font-num);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-orange);
  font-variant-numeric: tabular-nums;
}
.footer-stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 36px);
}

.footer-col-title {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.22em;
  color: var(--c-gold);
}

.footer-list { display: grid; gap: 6px; }

.footer-link {
  display: inline-block;
  padding: 3px 0;
  font-size: 0.9rem;
  color: rgba(246, 248, 252, 0.78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--c-lime);
  border-bottom-color: rgba(155, 255, 90, 0.5);
}

.footer-contact { display: grid; gap: 6px; }

.footer-contact-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 0.84rem;
  color: var(--c-snow);
}
.footer-mail-text { overflow-wrap: anywhere; }

.copy-btn {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(155, 255, 90, 0.5);
  background: rgba(155, 255, 90, 0.12);
  color: var(--c-lime);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.copy-btn:hover,
.copy-btn[data-copied] {
  background: var(--c-lime);
  color: var(--c-ink);
}

.footer-contact-line {
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(246, 248, 252, 0.8);
  overflow-wrap: anywhere;
}

.footer-note {
  margin-top: 4px;
  font-size: 0.74rem;
  line-height: 1.65;
  color: rgba(199, 210, 226, 0.72);
}

.footer-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: clamp(24px, 3.5vw, 44px);
  padding-top: 18px;
  border-top: 1px solid rgba(199, 210, 226, 0.2);
  font-size: 0.78rem;
  color: var(--c-mist);
}
.footer-copy { margin: 0; }
.footer-icp {
  margin: 0;
  font-family: var(--font-num);
  letter-spacing: 0.04em;
  color: rgba(199, 210, 226, 0.85);
}

/* ==========================================================================
   通用布局组件
   ========================================================================== */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(40px, 7vw, 96px); }
.section--tight { padding-block: clamp(24px, 4vw, 56px); }

.section-head {
  display: grid;
  gap: 12px;
  max-width: 60ch;
  margin-bottom: clamp(20px, 3vw, 36px);
}
.section-head p { color: var(--ink-mute); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-self: start;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(10, 29, 58, 0.06);
  border: 1px solid rgba(10, 29, 58, 0.12);
  font-family: var(--font-num);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ink);
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-orange);
}

.on-dark { color: var(--c-snow); }
.on-dark h1, .on-dark h2, .on-dark h3, .on-dark h4 { color: var(--c-snow); }
.on-dark p { color: rgba(246, 248, 252, 0.82); }
.on-dark .eyebrow {
  background: rgba(246, 248, 252, 0.1);
  border-color: rgba(199, 210, 226, 0.26);
  color: var(--c-mist);
}

.grid { display: grid; gap: clamp(16px, 2.4vw, 32px); }
.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ==========================================================================
   通用按钮 / 面包屑 / 正文
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 900;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease), color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: var(--c-orange);
  color: var(--c-ink);
  box-shadow: 0 14px 28px -16px rgba(255, 106, 42, 0.95);
}
.btn--lime {
  background: var(--c-lime);
  color: var(--c-ink);
  box-shadow: 0 14px 28px -18px rgba(155, 255, 90, 0.9);
}
.btn--ghost {
  background: transparent;
  color: var(--c-ink);
  border-color: rgba(10, 29, 58, 0.26);
}
.on-dark .btn--ghost {
  color: var(--c-snow);
  border-color: rgba(199, 210, 226, 0.4);
}
.btn--sm { padding: 8px 16px; font-size: 0.82rem; }

.breadcrumbs { font-size: 0.8rem; color: #54657F; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.breadcrumbs li { display: inline-flex; align-items: center; gap: 6px; }
.breadcrumbs li + li::before { content: "/"; color: #9AA8BD; }
.breadcrumbs a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}
.breadcrumbs a:hover { border-bottom-color: currentColor; }
.on-dark .breadcrumbs { color: var(--c-mist); }
.on-dark .breadcrumbs li + li::before { color: rgba(199, 210, 226, 0.5); }

.prose {
  max-width: 40em;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-soft);
}
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: clamp(1.5rem, 2.2vw, 1.9rem); margin-top: 1.6em; }
.prose h3 { margin-top: 1.4em; }
.prose ul, .prose ol { padding-left: 1.2em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: var(--c-ink); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--c-ink); font-weight: 800; }

/* ==========================================================================
   卡片 / 标签 / 胶囊 / 数字
   ========================================================================== */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border-radius: var(--radius-md);
  background: #FFFFFF;
  border: 1px solid var(--line-soft);
  box-shadow: 0 22px 46px -38px rgba(10, 29, 58, 0.75);
}
.card--dark,
.card--teal,
.card--indigo,
.card--wine { color: var(--c-snow); border-color: rgba(199, 210, 226, 0.18); }
.card--dark { background: linear-gradient(150deg, var(--c-ink), var(--c-teal)); }
.card--teal { background: linear-gradient(150deg, var(--c-teal), #0A2E37); }
.card--indigo { background: linear-gradient(150deg, var(--c-indigo), #1A1138); }
.card--wine { background: linear-gradient(150deg, var(--c-wine), #3D1220); }
.card--dark h3, .card--teal h3, .card--indigo h3, .card--wine h3 { color: var(--c-snow); }
.card--dark p, .card--teal p, .card--indigo p, .card--wine p { color: rgba(246, 248, 252, 0.84); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(10, 29, 58, 0.14);
  background: rgba(10, 29, 58, 0.06);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-ink);
}
.tag--live {
  background: rgba(155, 255, 90, 0.22);
  border-color: rgba(46, 120, 22, 0.45);
  color: #1E4A0A;
}
.tag--live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #2E7816;
}
.tag--gold {
  background: rgba(242, 184, 75, 0.2);
  border-color: rgba(163, 116, 20, 0.45);
  color: #6B4A05;
}
:is(.card--dark, .card--teal, .card--indigo, .card--wine, .on-dark) .tag {
  background: rgba(246, 248, 252, 0.12);
  border-color: rgba(199, 210, 226, 0.3);
  color: var(--c-snow);
}
:is(.card--dark, .card--teal, .card--indigo, .card--wine, .on-dark) .tag--live {
  background: rgba(155, 255, 90, 0.16);
  border-color: rgba(155, 255, 90, 0.55);
  color: var(--c-lime);
}
:is(.card--dark, .card--teal, .card--indigo, .card--wine, .on-dark) .tag--live::before { background: var(--c-lime); }

.pill-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(10, 29, 58, 0.2);
  background: transparent;
  color: var(--c-ink);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.pill:hover { background: rgba(10, 29, 58, 0.07); }
.pill[aria-pressed="true"],
.pill[data-active] {
  background: var(--c-ink);
  border-color: var(--c-ink);
  color: var(--c-snow);
}
.on-dark .pill { border-color: rgba(199, 210, 226, 0.34); color: var(--c-snow); }
.on-dark .pill:hover { background: rgba(246, 248, 252, 0.12); }
.on-dark .pill[aria-pressed="true"],
.on-dark .pill[data-active] {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-ink);
}

.stat-value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-orange);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  display: block;
  margin-top: 4px;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #5B6B85;
}
.on-dark .stat-label { color: var(--c-mist); }
:is(.card--dark, .card--teal, .card--indigo, .card--wine) .stat-label { color: var(--c-mist); }

.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   图片容器基础规则
   ========================================================================== */
.figure { display: grid; gap: 10px; margin: 0; }
.figure-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  background-color: var(--c-ink);
  background-image:
    radial-gradient(90% 90% at 12% 4%, rgba(14, 59, 69, 0.95), rgba(14, 59, 69, 0) 62%),
    radial-gradient(80% 80% at 96% 96%, rgba(38, 26, 79, 0.9), rgba(38, 26, 79, 0) 60%),
    linear-gradient(140deg, #0A1D3A, #0E3B45);
}
.figure-media > img,
.figure-media > picture,
.figure-media > svg,
.figure-media > video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure--wide .figure-media { aspect-ratio: 21 / 9; }
.figure--tall .figure-media { aspect-ratio: 3 / 4; }
.figure--square .figure-media { aspect-ratio: 1 / 1; }
.figure-caption { font-size: 0.82rem; line-height: 1.65; color: #5B6B85; }
.on-dark .figure-caption,
:is(.card--dark, .card--teal, .card--indigo, .card--wine) .figure-caption { color: var(--c-mist); }

/* ==========================================================================
   可展开组
   ========================================================================== */
.accordion { display: grid; gap: 10px; }
.accordion-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  overflow: hidden;
}
.accordion-heading { margin: 0; font-size: 1rem; }

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 18px;
  border: 0;
  background: transparent;
  color: var(--c-ink);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.45;
  text-align: start;
  cursor: pointer;
  transition: background-color 0.18s var(--ease);
}
.accordion-trigger:hover { background: rgba(10, 29, 58, 0.04); }
.accordion-trigger[aria-expanded="true"] { background: rgba(255, 106, 42, 0.1); }

.accordion-icon {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-orange);
}
.accordion-icon::before,
.accordion-icon::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 9px; height: 2px;
  border-radius: 2px;
  background: var(--c-ink);
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}
.accordion-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.22s var(--ease), opacity 0.22s var(--ease);
}
.accordion-panel[data-open] { opacity: 1; }
.accordion-body {
  padding: 0 18px 18px;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .nav-link { padding: 8px 9px; font-size: 0.84rem; }
  .header-cta { padding: 9px 15px; font-size: 0.82rem; }
}

@media (max-width: 940px) {
  .brand { margin-inline-end: auto; }
  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: calc(100% - 2px);
    left: var(--gutter);
    right: var(--gutter);
    z-index: 5;
    display: none;
    flex: none;
    flex-direction: column;
    justify-content: flex-start;
    max-height: min(72vh, 520px);
    overflow-y: auto;
    padding: 12px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(199, 210, 226, 0.2);
    background: #0A1D3A;
    box-shadow: 0 30px 60px -26px rgba(3, 9, 20, 0.95);
  }
  .site-header[data-open] .site-nav,
  .site-nav[data-open] { display: flex; }

  .nav-list { flex-direction: column; align-items: stretch; gap: 4px; width: 100%; }
  .nav-link { display: block; padding: 13px 16px; border-radius: var(--radius-sm); font-size: 1rem; }

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

  .grid--7-5,
  .grid--5-7,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .grid--2 { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .footer-stats li { min-width: 0; flex: 1 1 96px; }
  .nav-toggle-text { display: none; }
}

@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;
  }
  .btn:hover,
  .header-cta:hover { transform: none; }
}