/* ==========================================================================
   金博娱乐汇 · 共享站点样式  /assets/site.css
   夜间数字文娱档案馆：午夜深海 + 鎏金 + 翡翠索引绿 + 品红提示
   ========================================================================== */

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

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

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }

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

button { font: inherit; color: inherit; }

/* ---------- 2. 设计变量 ---------- */
:root {
  --ink-950: #061321;
  --ink-900: #0A1A2F;
  --ink-800: #12294A;
  --gold: #D8A94B;
  --gold-hi: #F1D690;
  --jade: #2FA37A;
  --magenta: #C6386E;
  --parchment: #EDE6D6;
  --mist: #9AA7B8;
  --wine: #6E2B3E;

  --gold-line: rgba(216, 169, 75, 0.35);
  --gold-soft: rgba(216, 169, 75, 0.12);
  --parch-soft: rgba(237, 230, 214, 0.08);

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-body: var(--font-display);
  --font-mono: "JetBrains Mono", "Noto Sans Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --fs-14: 14px;
  --fs-17: 17px;
  --fs-21: 21px;
  --fs-27: 27px;
  --fs-34: 34px;
  --fs-42: 42px;
  --fs-56: 56px;
  --fs-72: 72px;

  --wrap-max: 1240px;
  --gutter: 20px;

  --shadow-hard: 8px 8px 0 0 rgba(6, 19, 33, 0.9);
  --shadow-hard-sm: 5px 5px 0 0 rgba(6, 19, 33, 0.9);
  --radius: 2px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 8% -12%, rgba(216, 169, 75, 0.10), transparent 62%),
    radial-gradient(900px 520px at 104% 2%, rgba(47, 163, 122, 0.09), transparent 58%),
    repeating-linear-gradient(0deg, rgba(237, 230, 214, 0.026) 0 1px, transparent 1px 6px);
  background-attachment: fixed, fixed, scroll;
  color: var(--parchment);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.85;
  min-height: 100vh;
}

body.nav-open { overflow: hidden; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--parchment);
}

h1 { font-size: clamp(38px, 7vw, 96px); }
h2 { font-size: clamp(28px, 4.2vw, 56px); }
h3 { font-size: clamp(21px, 2.4vw, 34px); }
h4 { font-size: var(--fs-21); }

p { max-width: 72ch; }

a { color: var(--gold-hi); text-decoration: none; }
a:hover { color: var(--gold); }

:focus-visible {
  outline: 3px solid var(--gold-hi);
  outline-offset: 3px;
}

::selection { background: var(--gold); color: var(--ink-950); }

.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 容器与节奏 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section { padding: 64px 0; }
.section--tight { padding: 40px 0; }

.section-head { margin-bottom: 32px; max-width: 70ch; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--gold);
}

.lede {
  font-size: var(--fs-21);
  line-height: 1.7;
  color: var(--parchment);
}

.prose { max-width: 68ch; line-height: 1.85; }
.prose p + p { margin-top: 1em; }
.prose h2 { margin: 1.4em 0 0.5em; }
.prose h3 { margin: 1.2em 0 0.4em; }

.stack > * + * { margin-top: 18px; }

.grid { display: grid; gap: 24px; }
.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)); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 11px 20px;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: transparent;
  color: var(--gold-hi);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn:hover,
.btn:focus-visible {
  background: var(--gold);
  border-color: var(--gold-hi);
  color: var(--ink-950);
}

.btn--primary {
  background: var(--gold);
  color: var(--ink-950);
  box-shadow: var(--shadow-hard-sm);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--gold-hi);
  border-color: var(--gold-hi);
  transform: translate(-2px, -2px);
}

.btn--ghost {
  border-color: var(--gold-line);
  color: var(--parchment);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--gold-soft);
  border-color: var(--gold);
  color: var(--gold-hi);
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumb { margin: 18px 0 0; }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--mist);
}

.breadcrumb-item { display: inline-flex; align-items: center; gap: 6px; }

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--gold-line);
}

.breadcrumb-item a {
  color: var(--parchment);
  border-bottom: 1px solid var(--gold-line);
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.breadcrumb-item a:hover { color: var(--gold-hi); border-bottom-color: var(--gold); }

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

/* ---------- 7. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink-900);
  border-bottom: 3px solid var(--gold);
  box-shadow: 0 6px 0 0 var(--ink-950);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 140;
  padding: 10px 18px;
  background: var(--gold);
  color: var(--ink-950);
  font-weight: 700;
  border-radius: var(--radius);
  transition: top 0.2s var(--ease);
}

.skip-link:focus { top: 12px; color: var(--ink-950); }

/* 上层：品牌说明 + 核对状态 */
.header-rail {
  background: var(--ink-950);
  border-bottom: 1px solid rgba(216, 169, 75, 0.18);
}

.rail-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-block: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.rail-brand { color: var(--gold-hi); font-weight: 600; max-width: none; }

.rail-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 3px 10px;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  color: var(--mist);
  max-width: none;
}

.rail-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 0 3px rgba(47, 163, 122, 0.22);
}

/* 下层：品牌 + 主栏目 */
.header-bar { background: var(--ink-900); }

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: inherit;
  flex: 0 0 auto;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-950));
  box-shadow: inset 0 0 0 1px rgba(241, 214, 144, 0.25);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 24px;
  line-height: 1;
  color: var(--gold-hi);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }

.brand-name {
  font-size: 23px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--parchment);
}

.brand-sub {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

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

.nav-link {
  display: block;
  padding: 10px 13px;
  min-height: 44px;
  color: var(--parchment);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

.nav-link[aria-current="page"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
  background: var(--gold-soft);
}

.nav-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: transparent;
  color: var(--gold-hi);
  cursor: pointer;
  transition: background 0.18s var(--ease);
}

.nav-toggle:hover { background: var(--gold-soft); }

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(6, 19, 33, 0.78);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s var(--ease), visibility 0.28s var(--ease);
}

.nav-scrim[data-open] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* 页头底部：进度线 + 刻度尺 */
.header-meter {
  height: 3px;
  background: rgba(216, 169, 75, 0.14);
  overflow: hidden;
}

.header-meter-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--jade), var(--gold), var(--magenta));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.header-rule,
.footer-ticks {
  height: 10px;
  background-image:
    repeating-linear-gradient(90deg, rgba(216, 169, 75, 0.5) 0 1px, transparent 1px 10px),
    repeating-linear-gradient(90deg, rgba(216, 169, 75, 0.22) 0 1px, transparent 1px 50px);
  background-size: 100% 5px, 100% 10px;
  background-position: bottom left, bottom left;
  background-repeat: repeat-x;
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  background: var(--ink-950);
  border-top: 3px solid var(--gold);
  color: var(--parchment);
}

.footer-ticks { opacity: 0.7; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 36px;
  padding: 56px 0 36px;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  max-width: none;
}

.brand-mark--footer {
  width: 40px;
  height: 40px;
  font-size: 20px;
}

.footer-brand-name {
  font-size: 21px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--parchment);
}

.footer-tagline {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 34ch;
}

.footer-seal {
  display: inline-block;
  margin-top: 18px;
  padding: 5px 12px;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.footer-heading {
  position: relative;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gold);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background: var(--gold);
}

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

.footer-link {
  display: inline-block;
  padding: 5px 0;
  min-height: 32px;
  font-size: 15.5px;
  color: var(--parchment);
  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(--gold-hi);
  border-bottom-color: var(--gold);
}

.footer-col--contact {
  padding: 22px;
  background: var(--wine);
  border: 2px solid rgba(216, 169, 75, 0.5);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 0 rgba(6, 19, 33, 0.9);
}

.footer-col--contact .footer-heading { color: var(--gold-hi); }
.footer-col--contact .footer-heading::after { background: var(--gold-hi); }

.footer-contact-line {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
  color: var(--parchment);
  max-width: none;
}

.footer-contact-line + .footer-contact-line { margin-top: 10px; }

.footer-contact-key {
  flex: 0 0 auto;
  padding: 1px 7px;
  border: 1px solid rgba(241, 214, 144, 0.5);
  border-radius: var(--radius);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-hi);
}

.footer-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 18px 0;
  border-top: 1px solid rgba(216, 169, 75, 0.25);
  border-bottom: 1px solid rgba(216, 169, 75, 0.25);
}

.footer-strip-label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
  margin-right: 6px;
}

.footer-note {
  padding-top: 20px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 78ch;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 40px;
}

.footer-legal {
  font-size: 13.5px;
  color: var(--mist);
  max-width: 70ch;
}

.to-top {
  min-height: 44px;
  padding: 9px 18px;
  border: 2px solid var(--gold-line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--gold-hi);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.to-top:hover,
.to-top:focus-visible {
  background: var(--gold);
  border-color: var(--gold-hi);
  color: var(--ink-950);
}

/* ---------- 9. 标签 / 数据 / 档案卡 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: rgba(216, 169, 75, 0.08);
}

.tag--jade { color: var(--jade); background: rgba(47, 163, 122, 0.1); }
.tag--gold { color: var(--gold); background: rgba(216, 169, 75, 0.1); }
.tag--magenta { color: var(--magenta); background: rgba(198, 56, 110, 0.12); }

.stat { display: flex; flex-direction: column; gap: 4px; }

.stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-34);
  line-height: 1.1;
  color: var(--gold-hi);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.range-track {
  position: relative;
  height: 10px;
  background: var(--ink-950);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.range-fill {
  display: block;
  height: 100%;
  width: var(--val, 50%);
  background: linear-gradient(90deg, var(--jade), var(--gold));
}

.archive-card {
  position: relative;
  padding: 26px 24px 24px;
  background: var(--ink-800);
  border: 2px solid var(--gold-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.archive-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  pointer-events: none;
  transition: border-color 0.18s var(--ease);
}

.archive-card:hover,
.archive-card:focus-within {
  border-color: var(--gold-hi);
  transform: translate(-3px, -3px);
}

.archive-card:hover::before,
.archive-card:focus-within::before { border-color: rgba(241, 214, 144, 0.4); }

.card-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: rgba(216, 169, 75, 0.45);
  margin-bottom: 12px;
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.archive-card:hover .card-index {
  color: var(--gold-hi);
  transform: translateY(-2px) scale(1.05);
  transform-origin: left bottom;
}

.frame {
  position: relative;
  background: var(--ink-800);
  border: 3px solid var(--ink-950);
  border-radius: var(--radius);
  box-shadow: 0 0 0 1px var(--gold-line), var(--shadow-hard);
}

/* ---------- 10. 媒体容器（供页面阶段放置图片/SVG） ---------- */
.media-frame {
  position: relative;
  display: block;
  margin: 0;
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-950));
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(6, 19, 33, 0.18) 0 1px, transparent 1px 3px);
}

.media-frame img,
.media-frame svg,
.media-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  padding: 10px 14px;
  background: rgba(6, 19, 33, 0.82);
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 11. 标签页 / 折叠组 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 2px solid var(--gold-line);
}

.tab {
  min-height: 44px;
  padding: 11px 18px;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--mist);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.tab[aria-selected="true"] {
  background: var(--gold);
  border-bottom-color: var(--gold-hi);
  color: var(--ink-950);
}

.tab-panel { padding-top: 24px; }
.tab-panel[hidden] { display: none; }

.disclosure { border-top: 1px solid var(--gold-line); }

.disclosure-item { border-bottom: 1px solid var(--gold-line); }

.disclosure-trigger {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  min-height: 44px;
  padding: 20px 0 20px 20px;
  border: 0;
  background: transparent;
  color: var(--parchment);
  font-size: var(--fs-17);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}

.disclosure-trigger::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 4px;
  background: var(--mist);
  opacity: 0.35;
  transition: background 0.28s var(--ease), opacity 0.28s var(--ease);
}

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

.disclosure-trigger[aria-expanded="true"] { color: var(--gold-hi); }

.disclosure-trigger[aria-expanded="true"]::before {
  background: var(--jade);
  opacity: 1;
}

.disc-mark {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--gold);
}

.disclosure-panel { padding: 0 0 22px 20px; color: var(--parchment); }
.disclosure-panel[hidden] { display: none; }

/* ---------- 12. 显现与章节高亮（JS 驱动） ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease-out, transform 0.35s ease-out;
}

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

[data-spy-target] { scroll-margin-top: 150px; }

[data-spy-link] {
  display: block;
  padding: 8px 0 8px 12px;
  border-left: 2px solid var(--gold-line);
  color: var(--mist);
  font-size: 14.5px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

[data-spy-link]:hover { color: var(--gold-hi); }

[data-spy-link][aria-current="true"] {
  color: var(--gold);
  border-left-color: var(--gold);
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.2fr; }
  .footer-col--contact { grid-column: 1 / -1; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 80;
    width: min(84vw, 340px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 96px 24px 32px;
    background: var(--ink-800);
    border-left: 3px solid var(--gold);
    box-shadow: -10px 0 0 0 rgba(6, 19, 33, 0.65);
    overflow-y: auto;
    transform: translateX(101%);
    transition: transform 0.28s var(--ease);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-item + .nav-item { border-top: 1px solid rgba(216, 169, 75, 0.18); }

  .nav-link {
    padding: 16px 12px;
    font-size: 17px;
    border-bottom: 0;
    border-left: 3px solid transparent;
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--gold);
    border-bottom-color: transparent;
  }

  .nav-cta {
    margin-top: 26px;
    width: 100%;
  }

  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section { padding: 48px 0; }
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding: 44px 0 30px; }
  .footer-col--contact { grid-column: auto; }
  .site-footer { margin-top: 64px; }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; }

  body { font-size: 16px; line-height: 1.8; }

  .brand-mark { width: 40px; height: 40px; font-size: 20px; }
  .brand-name { font-size: 19px; }
  .brand-sub { font-size: 11px; letter-spacing: 0.12em; }

  .rail-inner { font-size: 12px; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }

  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .to-top { width: 100%; }
}

/* ---------- 14. 动效克制 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] { transform: none; }
  .header-meter-fill { transition: none; }
}