/* ============================================================
   英皇赛事 · 共享站点样式  /assets/site.css
   深夜演播厅 + 数据驾驶舱 · 海报式分层 · 档案夹隐喻
   ============================================================ */

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

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

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

ul, ol { list-style: none; }

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

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

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

address { font-style: normal; }

table { border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0A1228;
  --ink-2: #131A3A;
  --ink-3: #1B2450;
  --purple: #6B3CFF;
  --gold: #E8B44A;
  --cyan: #2DE1C2;
  --paper: #F3EDE3;
  --paper-2: #E4DCCE;
  --mist: #67718C;
  --coral: #FF5A6E;
  --ice: #5AA9FF;
  --amber: #FF8A3D;

  --text: #EDF1FA;
  --text-dim: #9AA5C0;
  --text-soft: #C3CCE2;
  --text-on-paper: #141A2E;
  --text-on-paper-dim: #4A5470;

  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.22);

  --wrap: 1240px;
  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.04), 0 18px 40px -26px rgba(0, 0, 0, 0.95);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Roboto Mono", "DejaVu Sans Mono", monospace;
}

/* ---------- 3. 基础排版 ---------- */
html:focus-within { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--purple); color: #fff; }

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

#main-content { display: block; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.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;
}

.h1, .h2, .h3, .h4 {
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: #fff;
}
.h1 { font-size: clamp(30px, 4.6vw, 52px); letter-spacing: -0.02em; }
.h2 { font-size: clamp(24px, 3.2vw, 34px); }
.h3 { font-size: clamp(19px, 2.2vw, 24px); }
.h4 { font-size: 17px; }

.display {
  font-family: var(--font-mono);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: clamp(56px, 13vw, 132px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: #fff;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow::before {
  content: "";
  flex: none;
  width: 26px;
  height: 1px;
  background: currentColor;
}

.lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: #B7C1DA;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ---------- 4. 分区与网格 ---------- */
.section { padding-block: clamp(44px, 6vw, 88px); }
.section--tight { padding-block: clamp(28px, 4vw, 52px); }
.section--ink-2 { background: var(--ink-2); }
.section--edge { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section--paper {
  background: var(--paper);
  color: var(--text-on-paper);
}
.section--paper .h1,
.section--paper .h2,
.section--paper .h3,
.section--paper .h4,
.section--paper .display { color: var(--text-on-paper); }
.section--paper .lede { color: var(--text-on-paper-dim); }
.section--paper .eyebrow { color: #8A5A0B; }

.grid { display: grid; gap: clamp(14px, 2vw, 22px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); }
.grid--side { grid-template-columns: minmax(0, 268px) minmax(0, 1fr); }

@media (max-width: 900px) {
  .grid--side { grid-template-columns: 1fr; }
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--purple);
  color: #fff;
  box-shadow: 0 12px 26px -14px rgba(107, 60, 255, 0.95);
}
.btn--primary:hover { background: #7B52FF; }

.btn--gold {
  background: var(--gold);
  color: #0A1228;
  box-shadow: 0 12px 26px -14px rgba(232, 180, 74, 0.9);
}
.btn--gold:hover { background: #F2C463; }

.btn--ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line-strong);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--cyan); color: #fff; }

.btn--paper {
  background: var(--paper);
  color: var(--text-on-paper);
}
.btn--paper:hover { background: #ffffff; }

.btn--sm { padding: 8px 14px; font-size: 13px; }
.btn--block { width: 100%; }

/* ---------- 6. 卡片 / 标签 / 档案夹 / 主题带 ---------- */
.card {
  position: relative;
  padding: clamp(16px, 2.2vw, 26px);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(27, 36, 80, 0.85), rgba(19, 26, 58, 0.9));
  box-shadow: var(--shadow-1);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card--hover:hover { transform: translateY(-3px); border-color: rgba(107, 60, 255, 0.6); }
.card--gold { border-top: 2px solid var(--gold); }
.card--cyan { border-top: 2px solid var(--cyan); }
.card--purple { border-top: 2px solid var(--purple); }

.card--paper {
  background: var(--paper);
  border-color: rgba(10, 18, 40, 0.14);
  color: var(--text-on-paper);
}
.card--paper .card__title { color: var(--text-on-paper); }
.card--paper .card__text { color: var(--text-on-paper-dim); }
.card--paper .card__label { color: #8A5A0B; }

.card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}
.card__title {
  margin-top: 8px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  line-height: 1.35;
  color: #fff;
}
.card__text {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: #A9B4CE;
}
.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #AFB9D4;
}
.tag--gold { color: var(--gold); border-color: rgba(232, 180, 74, 0.45); background: rgba(232, 180, 74, 0.08); }
.tag--cyan { color: var(--cyan); border-color: rgba(45, 225, 194, 0.45); background: rgba(45, 225, 194, 0.08); }
.tag--purple { color: #B5A0FF; border-color: rgba(107, 60, 255, 0.55); background: rgba(107, 60, 255, 0.16); }
.tag--coral { color: var(--coral); border-color: rgba(255, 90, 110, 0.45); background: rgba(255, 90, 110, 0.08); }

.folder {
  position: relative;
  margin-top: 18px;
  padding: 26px 20px 20px;
  border: 1px solid var(--line);
  border-radius: 0 12px 12px 12px;
  background: linear-gradient(160deg, rgba(27, 36, 80, 0.6), rgba(10, 18, 40, 0.88));
  box-shadow: var(--shadow-1);
}
.folder__tab {
  position: absolute;
  top: -1px;
  left: -1px;
  transform: translateY(-100%);
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  background: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.band {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  overflow-x: auto;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}
.band--ink { background: var(--ink-2); padding-inline: 16px; }
.band__item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex: none;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #A9B4CE;
  white-space: nowrap;
}
.band__item b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

/* ---------- 7. 数据组件 ---------- */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.05;
  color: #fff;
}
.stat__num--gold { color: var(--gold); }
.stat__num--cyan { color: var(--cyan); }
.stat__num--coral { color: var(--coral); }
.stat__num--ice { color: var(--ice); }
.stat__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(19, 26, 58, 0.55);
}
.data-table { width: 100%; min-width: 520px; font-size: 14px; }
.data-table th {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: left;
  color: var(--mist);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--text-soft);
}
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover td { background: rgba(107, 60, 255, 0.1); }
.data-table .num { text-align: right; color: #fff; }

.bar {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}
.bar__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--ice), var(--purple) 55%, var(--coral));
  transition: width 1s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.bar--warm .bar__fill { background: linear-gradient(90deg, var(--gold), var(--amber), var(--coral)); }

/* ---------- 8. 展开组 / 提示 / 面包屑 / 正文 ---------- */
.acc { border-top: 1px solid var(--line); }
.acc__item { border-bottom: 1px solid var(--line); }
.acc__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 2px;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  color: #E4E9F6;
  cursor: pointer;
  transition: color 0.2s ease;
}
.acc__trigger:hover { color: var(--gold); }
.acc__item[data-open] .acc__trigger { color: #fff; }
.acc__sign { position: relative; flex: none; width: 18px; height: 18px; }
.acc__sign::before,
.acc__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 1.5px;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform 0.28s ease, opacity 0.2s ease;
}
.acc__sign::after { transform: translate(-50%, -50%) rotate(90deg); }
.acc__item[data-open] .acc__sign::after { transform: translate(-50%, -50%) rotate(0deg); opacity: 0; }
.acc__panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.34s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}
.acc__item[data-open] .acc__panel { max-height: 2400px; opacity: 1; }
.acc__body {
  max-width: 74ch;
  padding: 0 2px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: #A9B4CE;
}

.callout {
  padding: 14px 18px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 10px 10px 0;
  background: rgba(45, 225, 194, 0.07);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-soft);
}
.callout--gold { border-left-color: var(--gold); background: rgba(232, 180, 74, 0.08); }
.callout--coral { border-left-color: var(--coral); background: rgba(255, 90, 110, 0.08); }

.crumbs {
  padding-block: 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.crumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.crumbs li { display: flex; align-items: center; gap: 8px; }
.crumbs li + li::before { content: "/"; color: rgba(103, 113, 140, 0.6); }
.crumbs a { color: var(--mist); }
.crumbs a:hover { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--gold); }

.prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-soft);
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; line-height: 1.3; color: #fff; }
.prose h3 { font-size: clamp(18px, 2vw, 22px); font-weight: 800; line-height: 1.35; color: #fff; }
.prose ul, .prose ol { list-style: none; }
.prose li { position: relative; padding-left: 20px; }
.prose li + li { margin-top: 0.5em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(45, 225, 194, 0.4); }
.prose a:hover { border-bottom-color: var(--cyan); }
.prose strong { color: #fff; }
.prose blockquote {
  padding-left: 16px;
  border-left: 2px solid var(--purple);
  color: #A9B4CE;
}
.prose code {
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
  font-family: var(--font-mono);
  font-size: 0.9em;
}
.section--paper .prose { color: #2C3350; }
.section--paper .prose h2,
.section--paper .prose h3,
.section--paper .prose strong { color: #0A1228; }
.section--paper .prose a { color: #4A28C8; border-bottom-color: rgba(74, 40, 200, 0.35); }
.section--paper .prose li::before { background: #4A28C8; }

/* ---------- 9. 图片容器（页面阶段放图） ---------- */
.media-frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(140deg, #1B2450, #0A1228 58%, #131A3A);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(103, 113, 140, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(103, 113, 140, 0.14) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.5;
}
.media-frame img,
.media-frame video {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--plain::after { display: none; }
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame__slot {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-align: center;
  color: rgba(103, 113, 140, 0.85);
}
.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  padding: 20px 16px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #D8DFF2;
  background: linear-gradient(180deg, rgba(10, 18, 40, 0), rgba(10, 18, 40, 0.92));
}

/* ---------- 10. 页头 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 0 0 8px 8px;
  background: var(--gold);
  color: #0A1228;
  font-size: 14px;
  font-weight: 700;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.header-top {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(107, 60, 255, 0.24), rgba(19, 26, 58, 0.92) 46%, rgba(45, 225, 194, 0.16));
  font-size: 12px;
}
.header-top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 34px;
}
.header-note {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
  font-size: 12px;
  letter-spacing: 0.07em;
  color: #B9C3DC;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.header-note__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.18);
  animation: signalPulse 2.6s ease-in-out infinite;
}
@keyframes signalPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.78); }
}
.header-top__meta { display: flex; align-items: center; gap: 18px; flex: none; }
.header-top__link {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.header-top__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.header-main__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 74px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand__mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(232, 180, 74, 0.5);
  border-radius: 8px;
  background: linear-gradient(150deg, #1B2450, #0A1228);
  box-shadow: inset 0 0 0 1px rgba(232, 180, 74, 0.14), var(--shadow-1);
  font-size: 20px;
  font-weight: 900;
  color: var(--gold);
  letter-spacing: 0;
}
.brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; }
.brand__name { font-size: 19px; font-weight: 800; letter-spacing: 0.16em; color: #fff; }
.brand__tagline {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--mist);
}
.header-actions { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.nav-toggle:hover { border-color: var(--cyan); color: #fff; }
.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.header-nav {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #0D1531, #0A1228);
}
.header-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-list { display: flex; flex-wrap: wrap; align-items: stretch; }
.nav-list__item { display: flex; }
.nav-list__item--cta { display: none; }

.nav-link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 20px;
  border-left: 1px solid var(--line);
  transition: background-color 0.2s ease;
}
.nav-list__item:first-child .nav-link { padding-left: 0; border-left: 0; }
.nav-link__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--mist);
  transition: color 0.2s ease;
}
.nav-link__label {
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #D8DFF2;
  transition: color 0.2s ease;
}
.nav-link:hover { background: rgba(107, 60, 255, 0.14); }
.nav-link:hover .nav-link__label { color: var(--gold); }
.nav-link:hover .nav-link__idx { color: var(--cyan); }

.nav-link[aria-current="page"] {
  background: linear-gradient(180deg, rgba(107, 60, 255, 0.4), rgba(107, 60, 255, 0.04));
}
.nav-link[aria-current="page"] .nav-link__label { color: #fff; }
.nav-link[aria-current="page"] .nav-link__idx { color: var(--cyan); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--purple), var(--cyan), var(--gold));
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.nav-status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(232, 180, 74, 0.16);
}

.nav-link--cta {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  padding: 15px 0;
  border-left: 0;
  border-bottom: 1px solid rgba(232, 180, 74, 0.28);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold);
}
.nav-link__arrow { font-family: var(--font-mono); color: var(--cyan); }

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #0B1330 0%, #060A18 100%);
  color: var(--text-dim);
  font-size: 14px;
}
.footer-band {
  height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--cyan) 38%, var(--gold) 72%, var(--coral));
}
.footer-inner { padding-block: clamp(36px, 5vw, 64px) 28px; }

.footer-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.footer-wordmark {
  font-size: clamp(38px, 8.5vw, 104px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0.06em;
  color: rgba(232, 180, 74, 0.16);
  -webkit-text-stroke: 1px rgba(232, 180, 74, 0.55);
}
.footer-brandline { font-size: 12px; letter-spacing: 0.14em; color: var(--mist); }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--line);
}
.footer-col { position: relative; padding: 20px 18px 22px; background: #0A1228; }
.footer-col:nth-child(1) { box-shadow: inset 3px 0 0 var(--purple); }
.footer-col:nth-child(2) { box-shadow: inset 3px 0 0 var(--cyan); }
.footer-col:nth-child(3) { box-shadow: inset 3px 0 0 var(--gold); }
.footer-col:nth-child(4) { box-shadow: inset 3px 0 0 var(--coral); }
.footer-col__tab {
  display: flex;
  align-items: center;
  width: 100%;
  margin-bottom: 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid rgba(232, 180, 74, 0.28);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-col__tab:hover { color: #fff; border-bottom-color: var(--cyan); }
.footer-col__list { display: grid; gap: 8px; }
.footer-col__item {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  color: #9AA5C0;
}
.footer-col__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
  opacity: 0.75;
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(107, 60, 255, 0.14), rgba(10, 18, 40, 0.6) 62%);
}
.footer-contact__row { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.footer-contact__val {
  font-size: 14px;
  color: #E4E9F6;
  word-break: break-word;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--mist);
}
.footer-meta { letter-spacing: 0.06em; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-link {
  color: var(--mist);
  border-bottom: 1px solid rgba(103, 113, 140, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.footer-note {
  max-width: 72ch;
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.8;
  color: #5A6480;
}

/* ---------- 12. 滚动信号与显现动效 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}
.scroll-progress__fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--purple), var(--cyan) 55%, var(--gold));
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 32px);
  bottom: clamp(14px, 3vw, 32px);
  z-index: 110;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(19, 26, 58, 0.94);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #E4E9F6;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease, border-color 0.2s ease, color 0.2s ease;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--cyan); color: #fff; }
.to-top__label::before { content: "↑ "; font-family: var(--font-mono); color: var(--cyan); }

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-link { padding: 12px 15px; }
  .nav-link__label { font-size: 14px; }
}

@media (max-width: 980px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .header-top__inner { min-height: 30px; }
  .header-top__meta { display: none; }
  .header-note { font-size: 11px; letter-spacing: 0.02em; }
  .header-main__inner { min-height: 62px; }
  .brand__mark { width: 36px; height: 36px; font-size: 17px; }
  .brand__name { font-size: 17px; letter-spacing: 0.12em; }
  .brand__tagline { font-size: 10px; letter-spacing: 0.12em; }
  .header-actions .btn { display: none; }
  .nav-toggle { display: inline-flex; }

  .header-nav {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.34s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .header-nav[data-open] {
    max-height: 78vh;
    overflow-y: auto;
    box-shadow: 0 26px 60px -22px rgba(0, 0, 0, 0.85);
  }
  .header-nav .wrap { display: block; }
  .nav-list { flex-direction: column; flex-wrap: nowrap; }
  .nav-list__item { display: block; }
  .nav-list__item--cta { display: block; }
  .nav-link {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 15px 0;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }
  .nav-list__item:first-child .nav-link { padding-left: 0; }
  .nav-link::after { display: none; }
  .nav-link__idx { font-size: 11px; color: var(--gold); }
  .nav-link__label { font-size: 16px; }
  .nav-status { display: none; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-wordmark { -webkit-text-stroke-width: 1px; }
  .footer-bottom { justify-content: flex-start; }
}

/* ---------- 14. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html:focus-within { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .header-nav { transition: none; }
  .acc__panel { transition: none; }
  [data-reveal] { opacity: 1; transform: none; }
}