/* ==========================================================================
   /assets/site.css — 极悦娱乐站 共享层
   深夜数据控制台 × 霓虹桌台：近单色底 + 青紫语义色 + 极细边界
   ========================================================================== */

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

html, body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd, hr {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

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

table { border-collapse: collapse; width: 100%; }

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

/* ---------- 2. 令牌 ---------- */
:root {
  --ink-900: #07080B;
  --ink-800: #0E1117;
  --ink-700: #161B24;
  --hairline: #242A35;
  --hairline-soft: #2A323F;
  --silver-400: #8B93A2;
  --silver-200: #C9D1DE;
  --silver-050: #EEF2F8;

  --cyan: #2FE6D2;
  --violet: #8B5CF6;
  --amber: #FFC24B;

  --rail: linear-gradient(90deg, #2FE6D2 0%, #8B5CF6 100%);
  --cyan-a: rgba(47, 230, 210, .14);
  --violet-a: rgba(139, 92, 246, .16);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
               system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", "Courier New", monospace;

  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 44px);
  --gap: clamp(16px, 2.2vw, 28px);
  --radius: 14px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver-200);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 70% at 88% -8%, rgba(139, 92, 246, .10), transparent 62%),
    radial-gradient(90% 60% at 4% 2%, rgba(47, 230, 210, .07), transparent 58%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--silver-050);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
}

h1 { font-size: clamp(30px, 5vw, 52px); }
h2 { font-size: clamp(24px, 3.4vw, 36px); }
h3 { font-size: clamp(18px, 2.2vw, 23px); }

p { text-wrap: pretty; }

strong { color: var(--silver-050); font-weight: 700; }

::selection { background: var(--cyan); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

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

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

.section { padding-block: clamp(52px, 7vw, 104px); }
.section--tight { padding-block: clamp(30px, 4vw, 56px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: clamp(26px, 3.6vw, 48px);
}

.grid {
  display: grid;
  gap: var(--gap);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--3-9 { grid-template-columns: 3fr 9fr; }
.grid--4-8 { grid-template-columns: 4fr 8fr; }
.grid--9-3 { grid-template-columns: 9fr 3fr; }
.grid--8-4 { grid-template-columns: 8fr 4fr; }

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  transition: top .2s linear;
}
.skip-link:focus { top: 14px; }

/* ---------- 6. 头部：悬浮胶囊浮岛 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: 12px var(--gutter) 20px;
  background: linear-gradient(180deg,
    rgba(7, 8, 11, .96) 0%,
    rgba(7, 8, 11, .78) 58%,
    rgba(7, 8, 11, 0) 100%);
}

.header-shell {
  position: relative;
  max-width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  padding: 9px 12px 9px 18px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: rgba(14, 17, 23, .86);
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, .96),
              inset 0 1px 0 rgba(255, 255, 255, .04);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  transition: border-color .3s linear, background-color .3s linear, box-shadow .3s linear;
}

.site-header[data-stuck] .header-shell {
  border-color: #303948;
  background: rgba(14, 17, 23, .96);
  box-shadow: 0 24px 52px -30px rgba(0, 0, 0, 1),
              inset 0 1px 0 rgba(255, 255, 255, .05);
}

/* 品牌 */
.brand {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  padding-left: 15px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.15;
  color: var(--silver-050);
  white-space: nowrap;
}

.brand-mark::before {
  content: "";
  position: absolute;
  left: 0;
  top: .28em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--rail);
}

.brand-sub {
  padding-left: 15px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  line-height: 1.2;
  color: var(--silver-400);
  white-space: nowrap;
}

/* 导航 */
.primary-nav {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

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

.nav-link {
  display: block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.25;
  color: var(--silver-200);
  white-space: nowrap;
  transition: color .22s linear, background-color .22s linear, box-shadow .22s linear;
}

.nav-link:hover {
  color: var(--silver-050);
  background: rgba(255, 255, 255, .06);
}

.nav-link[aria-current="page"] {
  color: var(--cyan);
  background: var(--cyan-a);
  box-shadow: inset 0 0 0 1px rgba(47, 230, 210, .32);
}

.nav-aside {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 10px;
  border-left: 1px solid var(--hairline);
}

.nav-quick {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--silver-400);
  white-space: nowrap;
  transition: color .22s linear, border-color .22s linear, background-color .22s linear;
}

.nav-quick:hover {
  color: var(--silver-050);
  border-color: rgba(47, 230, 210, .42);
  background: rgba(47, 230, 210, .07);
}

.nav-quick--signal {
  color: var(--amber);
  border-color: rgba(255, 194, 75, .34);
}

.nav-quick--signal:hover {
  color: var(--amber);
  border-color: rgba(255, 194, 75, .62);
  background: rgba(255, 194, 75, .08);
}

/* 头部右侧 */
.header-meta {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--silver-400);
  white-space: nowrap;
}

.status-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 230, 210, .16);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--silver-200);
  transition: border-color .22s linear, color .22s linear;
}

.nav-toggle:hover { border-color: rgba(47, 230, 210, .42); color: var(--silver-050); }

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 11px;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform .22s linear;
}

.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(4.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-4.75px) rotate(-45deg); }

.nav-toggle-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  margin-top: clamp(72px, 10vw, 150px);
  border-top: 1px solid var(--hairline);
  color: var(--silver-200);
  background-image:
    radial-gradient(130% 90% at 12% 0%, rgba(139, 92, 246, .13), transparent 58%),
    radial-gradient(90% 80% at 92% 10%, rgba(47, 230, 210, .07), transparent 60%),
    linear-gradient(180deg, #0B0D12 0%, var(--ink-900) 62%);
  background-repeat: no-repeat;
}

.footer-main {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: clamp(30px, 5vw, 76px);
  padding-block: clamp(46px, 6vw, 80px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.footer-mark {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--silver-050);
}

.footer-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--silver-400);
}

.footer-note {
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver-400);
}

.footer-cta { margin-top: 6px; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 42px);
}

.footer-col-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--silver-400);
}

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

.footer-link {
  font-size: 14px;
  color: var(--silver-200);
  transition: color .2s linear;
}

.footer-link:hover { color: var(--cyan); }

.footer-link--mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .01em;
  word-break: break-all;
}

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

.footer-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--silver-400);
}

.copy-btn {
  padding: 3px 10px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--silver-400);
  transition: color .2s linear, border-color .2s linear, background-color .2s linear;
}

.copy-btn:hover {
  color: var(--cyan);
  border-color: rgba(47, 230, 210, .42);
}

.copy-btn[data-copied] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.footer-legal {
  border-top: 1px solid var(--hairline);
}

.footer-legal-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  padding-block: 20px;
}

.legal-item {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  line-height: 1.7;
  color: var(--silver-400);
}

/* ---------- 8. 通用组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--silver-400);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--rail);
}

.section-index {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--ink-700);
  -webkit-text-stroke: 1px var(--hairline-soft);
}

.lede {
  max-width: 56ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--silver-400);
}

.figure {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7vw, 84px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--silver-050);
}

.figure--cyan { color: var(--cyan); }
.figure--violet { color: var(--violet); }

.unit {
  margin-left: .22em;
  font-family: var(--font-mono);
  font-size: .32em;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--silver-400);
}

.rail {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: var(--ink-700);
  overflow: hidden;
}

.rail__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--rail);
}

.num {
  font-family: var(--font-mono);
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  white-space: nowrap;
  transition: background-color .22s linear, color .22s linear,
              border-color .22s linear, box-shadow .22s linear;
}

.btn--primary {
  background: var(--silver-050);
  color: var(--ink-900);
}
.btn--primary:hover { background: #fff; box-shadow: 0 0 0 5px rgba(47, 230, 210, .16); }

.btn--rail {
  background: var(--rail);
  color: #04121A;
  font-weight: 700;
}
.btn--rail:hover { box-shadow: 0 0 0 5px rgba(139, 92, 246, .2); }

.btn--ghost {
  border-color: var(--hairline);
  color: var(--silver-200);
}
.btn--ghost:hover {
  border-color: rgba(47, 230, 210, .45);
  color: var(--silver-050);
  background: rgba(47, 230, 210, .06);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--silver-400);
  white-space: nowrap;
}

.chip--cyan {
  color: var(--cyan);
  border-color: rgba(47, 230, 210, .34);
  background: var(--cyan-a);
}
.chip--violet {
  color: var(--violet);
  border-color: rgba(139, 92, 246, .38);
  background: var(--violet-a);
}
.chip--signal {
  color: var(--amber);
  border-color: rgba(255, 194, 75, .34);
}

.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: 0 26px 50px -42px rgba(0, 0, 0, .95);
}

.card--raised { background: var(--ink-700); }

.card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--silver-400);
}

.card-title {
  margin-top: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--silver-050);
}

.card-text {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver-400);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: fit-content;
  max-width: 100%;
  padding: 6px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--ink-800);
}

.tab {
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--silver-400);
  transition: color .22s linear, background-color .22s linear;
}

.tab:hover { color: var(--silver-050); }

.tab[aria-selected="true"] {
  color: #04121A;
  font-weight: 700;
  background: var(--rail);
}

.accordion { border-top: 1px solid var(--hairline); }

.accordion-item { border-bottom: 1px solid var(--hairline); }

.accordion-trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 4px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--silver-050);
}

.accordion-trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--silver-400);
}

.accordion-trigger[aria-expanded="true"]::after { content: "–"; color: var(--cyan); }

.accordion-panel {
  padding: 0 4px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver-400);
}

.accordion-panel[hidden] { display: none; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--ink-800);
}

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

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}

.data-table thead th {
  background: var(--ink-700);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--silver-400);
  white-space: nowrap;
}

.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table td.num {
  font-family: var(--font-mono);
  color: var(--silver-050);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--silver-400);
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li + li::before {
  content: "/";
  color: #3A4351;
}

.breadcrumbs a:hover { color: var(--cyan); }

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--silver-200);
}

.prose > * + * { margin-top: 1.05em; }

.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.6em; }

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(47, 230, 210, .35);
}

.prose a:hover { border-bottom-color: var(--cyan); }

.prose ul { display: flex; flex-direction: column; gap: 10px; }

.prose li {
  position: relative;
  padding-left: 20px;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 1px;
  background: var(--silver-400);
}

/* ---------- 9. 影像容器（页面阶段放置占位） ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--ink-700) 0%, var(--ink-800) 58%, #101625 100%);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(70% 60% at 78% 16%, rgba(139, 92, 246, .28), transparent 62%),
    radial-gradient(62% 55% at 12% 88%, rgba(47, 230, 210, .20), transparent 60%);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.88) contrast(1.08) brightness(.84);
}

.media--grid::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 44px 44px;
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 21 / 9; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--silver-400);
}

/* ---------- 10. 脚本注入组件 ---------- */
.scroll-rail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 130;
  background: rgba(36, 42, 53, .55);
  pointer-events: none;
}

.scroll-rail__fill {
  display: block;
  width: 0;
  height: 100%;
  background: var(--rail);
  transition: width .12s linear;
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 34px);
  bottom: clamp(14px, 3vw, 34px);
  z-index: 120;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  background: rgba(14, 17, 23, .92);
  color: var(--silver-200);
  font-family: var(--font-mono);
  font-size: 15px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: opacity .24s linear, transform .24s linear,
              visibility .24s linear, color .24s linear, border-color .24s linear;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  color: var(--cyan);
  border-color: rgba(47, 230, 210, .45);
}

/* ---------- 11. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .36s linear, transform .36s cubic-bezier(.2, .7, .2, 1);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1120px) {
  .nav-aside { display: none; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  .site-header { padding-bottom: 16px; }

  .header-shell {
    flex-wrap: nowrap;
    padding: 8px 10px 8px 16px;
    border-radius: 999px;
  }

  .primary-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--hairline);
    border-radius: 20px;
    background: rgba(14, 17, 23, .97);
    box-shadow: 0 30px 56px -30px rgba(0, 0, 0, 1);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .22s linear, transform .22s linear, visibility .22s linear;
  }

  .primary-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

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

  .nav-aside {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin-top: 8px;
    padding: 12px 0 0;
    border-left: 0;
    border-top: 1px solid var(--hairline);
  }

  .nav-quick { text-align: center; padding: 10px 14px; }

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

  .footer-main {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .grid--3-9,
  .grid--4-8,
  .grid--9-3,
  .grid--8-4 { grid-template-columns: 1fr; }

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

  .footer-legal-row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .status-chip { display: none; }
  .brand-sub { display: none; }
  .brand-mark { font-size: 16px; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }

  .footer-cols { grid-template-columns: 1fr; gap: 26px; }

  .figure { font-size: clamp(34px, 12vw, 54px); }
}

/* ---------- 13. 无障碍动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}