/* =========================================================
   欧宝娱乐主站 · 共享样式表 /assets/site.css
   深夜战术室 × 赛场聚光灯：深墨绿基底 + 荧光青锚点 + 电光橙节点
   ========================================================= */

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

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

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

ul, ol { padding: 0; list-style: none; }

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --pitch-900: #050D0A;
  --pitch-800: #0A1A14;
  --pitch-700: #10251C;
  --grid-line: #1E3A30;

  --white: #F1F7F3;
  --cyan: #2FE6C8;
  --cyan-dim: #178C7C;
  --orange: #FF7A2E;
  --silver: #9FB0AA;
  --silver-dark: #5E6E68;

  --font-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --header-h: 76px;
  --rail-w: 46px;
  --shell: 1440px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基底排版 ---------- */
body {
  padding-top: var(--header-h);
  background-color: var(--pitch-900);
  background-image:
    radial-gradient(1200px 620px at 84% -8%, rgba(47, 230, 200, 0.07), transparent 62%),
    radial-gradient(900px 520px at -6% 104%, rgba(255, 122, 46, 0.05), transparent 60%);
  background-attachment: fixed;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: clamp(34px, 5.2vw, 64px); }
h2 { font-size: clamp(24px, 3vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 28px); }

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

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

/* ---------- 4. 布局容器 ---------- */
.shell {
  width: min(var(--shell), calc(100% - 40px));
  margin-inline: auto;
}

.shell--narrow { width: min(920px, calc(100% - 40px)); }

.grid-veil {
  position: relative;
  background-image:
    linear-gradient(90deg, rgba(47, 230, 200, 0.05) 1px, transparent 1px),
    linear-gradient(0deg, rgba(30, 58, 48, 0.55) 1px, transparent 1px);
  background-size: calc(100% / 24) 100%, 100% 64px;
}

.section {
  padding-block: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--grid-line);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.section__title { font-size: clamp(22px, 2.6vw, 34px); }

.section__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
}

/* ---------- 5. 索引元素与正文 ---------- */
.micro {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.prose {
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--white);
}

.prose p + p { margin-top: 1.2em; }
.prose h2 { margin-top: 1.6em; margin-bottom: 0.6em; }
.prose h3 { margin-top: 1.4em; margin-bottom: 0.5em; }
.prose ul { margin-block: 1em; }
.prose li {
  position: relative;
  padding-left: 18px;
  margin-block: 0.4em;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(47, 230, 200, 0.4); }
.prose a:hover { border-bottom-color: var(--cyan); }

.lede {
  max-width: 34em;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.75;
  color: var(--silver);
  border-left: 2px solid var(--cyan);
  padding-left: 18px;
}

/* ---------- 6. 页头区与面包屑 ---------- */
.page-head {
  padding-block: clamp(40px, 6vw, 84px) clamp(24px, 4vw, 48px);
  border-bottom: 1px solid var(--grid-line);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver-dark);
}

.breadcrumb a { color: var(--silver); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--silver-dark); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1;
  white-space: nowrap;
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease),
    border-color 0.16s var(--ease);
}

.btn--accent {
  background: var(--orange);
  border-color: var(--orange);
  color: #180A02;
}
.btn--accent:hover { background: #FF9153; border-color: #FF9153; }

.btn--ghost {
  background: transparent;
  border-color: var(--grid-line);
  color: var(--white);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.btn--line {
  background: transparent;
  border-color: var(--cyan);
  color: var(--cyan);
}
.btn--line:hover { background: rgba(47, 230, 200, 0.1); }

/* ---------- 8. 卡片 / 标签 / 表格 ---------- */
.card {
  background: var(--pitch-800);
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  padding: clamp(18px, 2.2vw, 28px);
}

.card--float {
  background: var(--pitch-700);
  border-color: var(--cyan-dim);
  transform: translateY(-4px);
  transition: transform 0.32s var(--ease), border-color 0.16s var(--ease);
}
.card--float:hover { transform: translateY(-8px); border-color: var(--cyan); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease),
    background-color 0.16s var(--ease);
}
.chip:hover { color: var(--white); border-color: var(--silver-dark); }
.chip[aria-pressed="true"],
.chip[aria-selected="true"] {
  color: var(--pitch-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

[data-league="epl"] { --league: var(--cyan); }
[data-league="laliga"] { --league: var(--orange); }
[data-league="seriea"] { --league: var(--silver); }

.tag[data-league] { border-color: var(--league); color: var(--league); }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}
.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--grid-line);
  font-size: 15px;
}
.data-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
  border-bottom-color: var(--silver-dark);
}
.data-table tbody tr:nth-child(even) { background: var(--pitch-800); }
.data-table tbody tr:hover { background: var(--pitch-700); }
.data-table .num { color: var(--cyan); }

/* ---------- 9. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  background-color: var(--pitch-700);
  background-image:
    repeating-linear-gradient(45deg, rgba(47, 230, 200, 0.06) 0 1px, transparent 1px 12px),
    linear-gradient(160deg, var(--pitch-700) 0%, var(--pitch-900) 72%);
}

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

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 10px;
  background: rgba(5, 13, 10, 0.82);
  border-top: 1px solid var(--grid-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

/* ---------- 10. 手风琴 ---------- */
.accordion {
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  background: var(--pitch-800);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.accordion + .accordion { margin-top: -1px; }

.accordion[data-open="true"] {
  background: var(--pitch-700);
  border-color: var(--cyan-dim);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 20px;
  text-align: left;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
}

.accordion__trigger::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
  transition: transform 0.24s var(--ease), color 0.16s var(--ease);
}

.accordion[data-open="true"] .accordion__trigger::after {
  content: "–";
  transform: rotate(180deg);
  color: var(--orange);
}

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.26s var(--ease);
}
.accordion__panel > * {
  overflow: hidden;
  padding-inline: 20px;
  font-size: 15.5px;
  line-height: 1.4;
  color: var(--silver);
  transition: line-height 0.26s var(--ease), padding-bottom 0.26s var(--ease);
}
.accordion[data-open="true"] .accordion__panel { grid-template-rows: 1fr; }
.accordion[data-open="true"] .accordion__panel > * {
  line-height: 1.8;
  padding-bottom: 20px;
}

/* ---------- 11. 复制按钮 ---------- */
.copy-btn {
  padding: 5px 10px;
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.copy-btn:hover { color: var(--cyan); border-color: var(--cyan); }
.copy-btn[data-copied="true"] {
  color: var(--pitch-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 12. 辅助类 ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--pitch-900);
  font-family: var(--font-mono);
  font-size: 13px;
  border-radius: 2px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; }

body.is-locked { overflow: hidden; }

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 13. 页头 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background: rgba(5, 13, 10, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--grid-line);
  transition: background-color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.site-header[data-scrolled="true"] {
  background: rgba(5, 13, 10, 0.96);
  border-bottom-color: var(--cyan-dim);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 40px);
  min-height: var(--header-h);
}

.site-header__brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  flex: 0 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.brand__text {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--white);
}

.season-marker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--silver);
  white-space: nowrap;
}

.season-marker__dot {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 46, 0.16);
  animation: ob-pulse 2.6s var(--ease) infinite;
}

@keyframes ob-pulse {
  0%, 70%, 100% { box-shadow: 0 0 0 3px rgba(255, 122, 46, 0.16); }
  35% { box-shadow: 0 0 0 7px rgba(255, 122, 46, 0.05); }
}

.site-nav { margin-left: auto; }
.site-nav__caption { display: none; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.5vw, 26px);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--silver);
  transition: color 0.16s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}

.site-nav__link:hover { color: var(--white); }
.site-nav__link:hover::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--cyan); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 移动端抽屉按钮：桌面隐藏 */
.nav-toggle { display: none; }

/* ---------- 14. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 7vw, 100px);
  border-top: 1px solid var(--grid-line);
  background: linear-gradient(180deg, var(--pitch-800) 0%, var(--pitch-900) 100%);
  padding-block: clamp(36px, 5vw, 64px) 20px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.25fr;
}

.footer-col {
  padding: 0 22px 28px;
  border-left: 1px solid var(--grid-line);
}
.footer-col:first-child { border-left: 0; padding-left: 0; }

.footer-col__title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
}

.footer-brand {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--white);
}

.footer-tagline {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-note {
  margin-top: 14px;
  max-width: 30em;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--silver-dark);
}

.footer-index { counter-reset: idx; }

.footer-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--silver);
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.footer-index__link::before {
  counter-increment: idx;
  content: counter(idx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--silver-dark);
}
.footer-index__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--grid-line);
}

.league-list { display: grid; gap: 10px; }

.league-item {
  display: grid;
  grid-template-columns: 10px auto 1fr;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--silver);
}

.league-item__mark {
  width: 10px;
  height: 10px;
  background: var(--league, var(--silver));
}

.league-item__name { color: var(--white); }

.league-item__meta {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver-dark);
}

.footer-meta {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--silver-dark);
}

.contact-list { display: grid; gap: 12px; }

.contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.contact-item__label {
  flex: 0 0 100%;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--silver-dark);
}

.contact-item__value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--white);
  word-break: break-all;
}

.contact-item--wide .contact-item__value {
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--silver);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 28px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--grid-line);
}

.legal-item {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--silver-dark);
}

.legal-link {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
  border-bottom: 1px solid var(--grid-line);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.legal-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* =========================================================
   15. 响应式
   ========================================================= */

/* 大桌面 → 小桌面：收起次要 CTA */
@media (max-width: 1199px) {
  .site-header__actions .btn--ghost { display: none; }
}

/* 桌面：滚动超过首屏后，栏目索引脱落为贴右边缘的竖向等宽标签列 */
@media (min-width: 1024px) {
  .site-header[data-scrolled="true"] .site-nav {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    z-index: 95;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-left: 0;
    padding: 18px 8px;
    background: rgba(10, 26, 20, 0.94);
    border: 1px solid var(--grid-line);
    border-right: 0;
    border-radius: 2px 0 0 2px;
    transition: opacity 0.24s var(--ease);
  }

  .site-header[data-scrolled="true"] .site-nav__caption {
    display: block;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--silver-dark);
  }

  .site-header[data-scrolled="true"] .site-nav__list {
    flex-direction: column;
    gap: 16px;
  }

  .site-header[data-scrolled="true"] .site-nav__link {
    writing-mode: vertical-rl;
    padding: 0;
    font-size: 12px;
    letter-spacing: 0.16em;
  }

  .site-header[data-scrolled="true"] .site-nav__link::after { display: none; }
  .site-header[data-scrolled="true"] .site-nav__link[aria-current="page"] {
    color: var(--cyan);
  }
}

/* 平板与手机：整屏抽屉 + 底部固定条 */
@media (max-width: 1023px) {
  :root { --header-h: 60px; }

  body { padding-bottom: 56px; }

  .brand__mark { width: 28px; height: 28px; font-size: 12px; }
  .brand__text { font-size: 17px; }

  .site-nav {
    position: fixed;
    inset: 0 0 56px 0;
    z-index: 92;
    margin-left: 0;
    padding: 84px 24px 28px;
    background: var(--pitch-900);
    border-right: 1px solid var(--grid-line);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: opacity 0.24s var(--ease), transform 0.28s var(--ease),
      visibility 0.28s linear;
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav__caption {
    display: block;
    margin-bottom: 18px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--cyan);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 18px 0;
    border-bottom: 1px solid var(--grid-line);
    font-size: 22px;
    font-family: var(--font-head);
    font-weight: 900;
    letter-spacing: -0.01em;
    color: var(--white);
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] { color: var(--cyan); }

  .site-header__actions {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 96;
    height: 56px;
    padding: 0 12px;
    gap: 8px;
    background: var(--pitch-800);
    border-top: 1px solid var(--grid-line);
  }

  .site-header__actions .btn {
    flex: 1 1 auto;
    height: 40px;
    padding: 0 12px;
  }

  .site-header__actions .btn--ghost { display: inline-flex; }

  .nav-toggle {
    display: flex;
    flex: 1 1 auto;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    height: 40px;
    padding: 0 14px;
    border: 1px solid var(--grid-line);
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--white);
  }

  .nav-toggle[data-open="true"] {
    border-color: var(--cyan);
    color: var(--cyan);
  }

  .nav-toggle__bars {
    display: grid;
    gap: 4px;
    width: 18px;
  }

  .nav-toggle__bars span {
    display: block;
    height: 1px;
    background: currentColor;
    transition: transform 0.24s var(--ease), opacity 0.16s var(--ease);
  }

  .nav-toggle[data-open="true"] .nav-toggle__bars span:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }
  .nav-toggle[data-open="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
  .nav-toggle[data-open="true"] .nav-toggle__bars span:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
  }

  .site-footer__grid { grid-template-columns: 1fr 1fr; }

  .footer-col { padding: 0 20px 28px; }
  .footer-col:nth-child(odd) { border-left: 0; padding-left: 0; }
  .footer-col:nth-child(even) { border-left: 1px solid var(--grid-line); }
}

/* 手机 */
@media (max-width: 767px) {
  .shell,
  .shell--narrow { width: calc(100% - 32px); }

  .season-marker { display: none; }

  .site-header__actions { padding: 0 8px; }
  .site-header__actions .btn { font-size: 12px; padding: 0 8px; }

  .site-footer__grid { grid-template-columns: 1fr; }

  .footer-col {
    padding: 22px 0;
    border-left: 0 !important;
    border-top: 1px solid var(--grid-line);
  }
  .footer-col:first-child { border-top: 0; padding-top: 0; }

  .site-footer__legal { flex-direction: column; align-items: flex-start; gap: 8px; }
  .legal-link { margin-left: 0; }

  .page-head { padding-block: 32px 24px; }
}

/* ---------- 16. 动效降级 ---------- */
@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;
  }

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