/* ==========================================================================
   必赢亚州 · 夜场数据台 / 共享样式表 site.css
   夜场转播席 × 战术板：深墨绿底、夜蓝数据岛、荧光青绿轨迹、琥珀数字
   ========================================================================== */

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

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

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--c-ink);
  color: var(--c-mist);
  font-family: var(--f-body);
  font-size: var(--fs-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--c-mint); text-decoration-thickness: 1px; text-underline-offset: 3px; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. CSS 变量 ---------- */
:root {
  /* 品牌色 */
  --c-ink: #0B1F1A;      /* 夜场深墨绿 —— 全站主背景 */
  --c-night: #0E2233;    /* 看台夜蓝 —— 数据岛底 */
  --c-deep: #07141D;     /* 深隧蓝 —— 页脚 / 实底导航 */
  --c-mint: #2BE3A3;     /* 荧光青绿 —— 主强调 */
  --c-amber: #FFC24B;    /* 高亮琥珀 —— 数据数字 */
  --c-red: #FF5A5F;      /* 信号红 —— 状态标记 */
  --c-mist: #A7BDB2;     /* 雾灰绿 —— 正文 */
  --c-snow: #F2F7F4;     /* 浅雾白 —— 反白文字 */
  --c-line: #1E4A3E;     /* 战术板线 —— 边框分隔 */
  --c-glow: #8FF5D2;     /* 柔光青 —— 悬停弱高亮 */

  /* 衍生透明层 */
  --c-line-soft: rgba(30, 74, 62, 0.7);
  --c-mint-12: rgba(43, 227, 163, 0.12);
  --c-mint-28: rgba(43, 227, 163, 0.28);
  --c-amber-14: rgba(255, 194, 75, 0.14);
  --c-red-14: rgba(255, 90, 95, 0.14);
  --c-veil: rgba(7, 20, 29, 0.62);

  /* 字体族 */
  --f-display: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Arial Narrow", system-ui, sans-serif;
  --f-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Roboto Mono", monospace;

  /* 字号层级 */
  --fs-display: clamp(2.75rem, 9vw, 6.5rem);
  --fs-title: clamp(1.75rem, 4.4vw, 3rem);
  --fs-h3: clamp(1.15rem, 2vw, 1.5rem);
  --fs-card: 1.02rem;
  --fs-body: 1rem;
  --fs-small: 0.86rem;
  --fs-index: 0.66rem;

  /* 间距与尺寸 */
  --sk-max: 1240px;
  --sk-narrow: 880px;
  --sk-gutter: clamp(1.15rem, 4vw, 3rem);
  --sk-gap: clamp(1rem, 2.4vw, 1.75rem);
  --sk-section: clamp(3rem, 7vw, 5.5rem);
  --sk-header-h: 72px;
  --sk-radius: 2px;

  /* 动效 */
  --ease-out: cubic-bezier(0.2, 0.7, 0.3, 1);
  --dur: 180ms;
}

/* ---------- 3. 中文排版与外链/标题 ---------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  color: var(--c-snow);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
  font-weight: 700;
}

h1 { font-weight: 600; letter-spacing: -0.03em; line-height: 1.02; }
h2 { font-size: var(--fs-title); font-weight: 700; }
h3 { font-size: var(--fs-h3); font-weight: 700; }
h4 { font-size: var(--fs-card); font-weight: 700; letter-spacing: 0.01em; }

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

.display {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--fs-display);
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--c-snow);
  margin: 0 0 0.35em;
}

.page-title {
  font-family: var(--f-display);
  font-size: var(--fs-title);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--c-snow);
  margin: 0 0 0.5rem;
}

.prose {
  max-width: 78ch;
  font-size: var(--fs-body);
  line-height: 1.95;
  color: var(--c-mist);
}
.prose > * + * { margin-top: 1.2em; }
.prose h2 { margin-top: 2em; font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.prose h3 { margin-top: 1.6em; color: var(--c-glow); }
.prose strong { color: var(--c-snow); font-weight: 700; }
.prose ul, .prose ol { padding-left: 1.35em; display: grid; gap: 0.5em; }
.prose a { color: var(--c-mint); }

.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;
}

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

.container--narrow { max-width: var(--sk-narrow); }

.section {
  position: relative;
  padding-block: var(--sk-section);
}
.section--tight { padding-block: calc(var(--sk-section) * 0.55); }

.stack { display: flex; flex-direction: column; gap: var(--sk-gap); }

.grid {
  display: grid;
  gap: var(--sk-gap);
  grid-template-columns: minmax(0, 1fr);
}
.grid--asym { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
.grid--asym-rev { grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); }
.grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--trio { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.slant-rule {
  height: 8px;
  border: 0;
  margin: 0;
  background-image: repeating-linear-gradient(-45deg, var(--c-mint-28) 0 2px, transparent 2px 9px);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

/* ---------- 5. 跳转链接与阅读进度 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 500;
  padding: 0.72rem 1.4rem;
  background: var(--c-mint);
  color: var(--c-deep);
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 13px 100%, 0 calc(100% - 13px));
  transition: top var(--dur) var(--ease-out);
}
.skip-link:focus { top: 0.65rem; }

.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 300;
  background: rgba(30, 74, 62, 0.45);
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-mint), var(--c-glow) 55%, var(--c-amber));
  box-shadow: 0 0 14px rgba(43, 227, 163, 0.65);
  transition: width 90ms linear;
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--c-veil);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid rgba(43, 227, 163, 0.1);
  transition: background-color 260ms var(--ease-out), border-color 260ms var(--ease-out), box-shadow 260ms var(--ease-out);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-mint) 16%, var(--c-amber) 54%, transparent 90%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 520ms var(--ease-out);
  pointer-events: none;
}
.site-header.is-solid {
  background-color: var(--c-deep);
  border-bottom-color: var(--c-mint-28);
  box-shadow: 0 22px 48px -34px rgba(0, 0, 0, 0.95);
}
.site-header.is-solid::after { transform: scaleX(1); }
.site-header[data-open] { background-color: var(--c-deep); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.75rem, 2vw, 2rem);
  width: 100%;
  max-width: var(--sk-max);
  margin-inline: auto;
  padding: 0.85rem var(--sk-gutter);
  min-height: var(--sk-header-h);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  text-decoration: none;
  color: inherit;
  flex: 0 0 auto;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  font-family: var(--f-display);
  font-size: 1.16rem;
  font-weight: 800;
  line-height: 1;
  color: var(--c-deep);
  background: linear-gradient(150deg, var(--c-mint), var(--c-glow));
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
  transition: transform 220ms var(--ease-out);
}
.brand:hover .brand__mark,
.brand:focus-visible .brand__mark { transform: translateY(-1px); }
.brand__text { display: block; min-width: 0; }
.brand__line {
  display: block;
  font-family: var(--f-display);
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--c-snow);
  white-space: nowrap;
}
.brand__desc {
  display: block;
  margin-top: 2px;
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  line-height: 1.4;
  color: var(--c-mist);
  white-space: nowrap;
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.1rem);
  min-width: 0;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1.35rem);
  list-style: none;
}
.site-nav__item { display: block; }
.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.45rem 0.15rem 0.55rem;
  font-size: 0.83rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--c-mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease-out);
}
.site-nav__index {
  font-family: var(--f-mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-line);
  transition: color var(--dur) var(--ease-out);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.15rem;
  right: 0.15rem;
  bottom: 0.2rem;
  height: 2px;
  background: linear-gradient(90deg, var(--c-mint), var(--c-amber));
  transform: scaleX(0) skewX(-24deg);
  transform-origin: left center;
  transition: transform 220ms var(--ease-out);
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--c-snow); }
.site-nav__link:hover .site-nav__index,
.site-nav__link:focus-visible .site-nav__index { color: var(--c-mint); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1) skewX(-24deg); }
.site-nav__link[aria-current="page"] { color: var(--c-snow); font-weight: 700; }
.site-nav__link[aria-current="page"] .site-nav__index { color: var(--c-mint); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1) skewX(-24deg); }
.site-nav__cta { flex: 0 0 auto; }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--c-mint-28);
  border-radius: var(--sk-radius);
  background: var(--c-mint-12);
  color: var(--c-snow);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.nav-toggle:hover,
.nav-toggle:focus-visible { background: rgba(43, 227, 163, 0.22); color: var(--c-snow); }
.nav-toggle__label { line-height: 1; }
.nav-toggle__bars { display: grid; gap: 3px; width: 18px; }
.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 220ms var(--ease-out), opacity 160ms var(--ease-out);
}
[data-open] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
[data-open] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
[data-open] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.72rem 1.3rem;
  border: 1px solid transparent;
  border-radius: var(--sk-radius);
  background: transparent;
  color: var(--c-snow);
  font-family: var(--f-body);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--c-amber), 0 0 0 3px rgba(255, 194, 75, 0.35);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--c-mint);
  color: var(--c-deep);
}
.btn--primary:hover { background: var(--c-glow); color: var(--c-deep); }

.btn--ghost {
  background: transparent;
  border-color: var(--c-mint-28);
  color: var(--c-snow);
}
.btn--ghost:hover { background: var(--c-mint-12); border-color: var(--c-mint); }

.btn--amber {
  background: var(--c-amber);
  color: #2a1c00;
}
.btn--amber:hover { background: #ffd47a; }

.btn--block { display: flex; width: 100%; }

/* ---------- 8. 基础组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-mint);
  margin: 0;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-mint), transparent);
  transform: skewX(-24deg);
}

.index-label {
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(167, 189, 178, 0.65);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--c-mint-28);
  border-radius: var(--sk-radius);
  background: var(--c-mint-12);
  color: var(--c-mint);
  font-size: var(--fs-index);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.7;
  white-space: nowrap;
}
.tag--amber { color: var(--c-amber); border-color: rgba(255, 194, 75, 0.42); background: var(--c-amber-14); }
.tag--red { color: var(--c-red); border-color: rgba(255, 90, 95, 0.42); background: var(--c-red-14); }

.num {
  font-family: var(--f-mono);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--c-amber);
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-mint);
  box-shadow: 0 0 0 4px rgba(43, 227, 163, 0.14);
  vertical-align: middle;
}
.status-dot--amber { background: var(--c-amber); box-shadow: 0 0 0 4px rgba(255, 194, 75, 0.14); }
.status-dot--red { background: var(--c-red); box-shadow: 0 0 0 4px rgba(255, 90, 95, 0.16); }

/* 数据岛面板 */
.panel {
  position: relative;
  padding: clamp(1.15rem, 2.4vw, 1.9rem);
  background: var(--c-night);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--sk-radius);
  color: var(--c-mist);
}
.panel--cut { clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%); }
.panel--mint {
  background: linear-gradient(155deg, rgba(43, 227, 163, 0.16), rgba(14, 34, 51, 0.94) 62%);
  border-color: var(--c-mint-28);
}
.panel--light {
  background: var(--c-snow);
  border-color: transparent;
  color: #10302a;
}
.panel--light h2,
.panel--light h3,
.panel--light h4 { color: #08201a; }
.panel--light .index-label { color: rgba(16, 48, 42, 0.6); }

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.1rem;
  font-size: var(--fs-small);
  letter-spacing: 0.04em;
  color: var(--c-mist);
}
.breadcrumb__link {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.breadcrumb__link:hover,
.breadcrumb__link:focus-visible { color: var(--c-mint); border-bottom-color: var(--c-mint); }
.breadcrumb__sep { color: var(--c-line); font-family: var(--f-mono); }
.breadcrumb span[aria-current="page"] { color: var(--c-snow); }

/* 图片容器基础规则（页面阶段放 img 或占位） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background:
    linear-gradient(150deg, rgba(14, 34, 51, 0.95), rgba(11, 31, 26, 0.95)),
    repeating-linear-gradient(115deg, rgba(30, 74, 62, 0.55) 0 1px, transparent 1px 26px);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--sk-radius);
}
.media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--slant { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 34px)); }
.media-frame__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 20, 29, 0) 38%, rgba(7, 20, 29, 0.86) 100%);
  pointer-events: none;
}

/* 标签页（配合 data-tabs） */
[data-tab-panel][hidden] { display: none; }
[data-tab-panel] { animation: sk-panel-in 180ms var(--ease-out) both; }

@keyframes sk-panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 9. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--sk-section);
  background-color: var(--c-deep);
  color: var(--c-mist);
  border-top: 1px solid var(--c-line-soft);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 220px;
  background-image:
    linear-gradient(180deg, rgba(14, 34, 51, 0.92), rgba(7, 20, 29, 0)),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(30, 74, 62, 0.35) 79px 80px);
  pointer-events: none;
  mask-image: linear-gradient(180deg, #000, transparent);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent);
}
.footer-slant {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: clamp(160px, 38%, 480px);
  height: 3px;
  background: linear-gradient(90deg, var(--c-mint), var(--c-amber));
  clip-path: polygon(0 0, 100% 0, calc(100% - 20px) 100%, 0 100%);
  pointer-events: none;
}
.site-footer__inner {
  position: relative;
  width: 100%;
  max-width: var(--sk-max);
  margin-inline: auto;
  padding: clamp(2.4rem, 6vw, 4.2rem) var(--sk-gutter) 1.75rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.78fr) minmax(0, 0.78fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: start;
}
.footer__brand { min-width: 0; }
.brand--footer { margin-bottom: 1.1rem; }
.brand--footer .brand__desc { letter-spacing: 0.16em; }
.footer__summary {
  max-width: 44ch;
  margin: 0 0 1.5rem;
  font-size: var(--fs-small);
  line-height: 1.9;
  color: var(--c-mist);
}
.footer__contact {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  font-style: normal;
  font-size: var(--fs-small);
}
.footer__contact-row {
  display: grid;
  grid-template-columns: 3.1em minmax(0, 1fr);
  gap: 0.7rem;
  align-items: baseline;
}
.footer__contact-key {
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(167, 189, 178, 0.55);
}
.footer__contact-val {
  color: var(--c-snow);
  word-break: break-word;
  line-height: 1.7;
}
.footer__col { min-width: 0; }
.footer__col-title {
  margin: 0 0 1.05rem;
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--c-mint);
}
.footer__links {
  display: grid;
  gap: 0.6rem;
  list-style: none;
}
.footer__links a {
  display: inline-block;
  font-size: 0.89rem;
  color: var(--c-mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.footer__links a:hover,
.footer__links a:focus-visible { color: var(--c-snow); transform: translateX(3px); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 1.5rem;
  margin-top: clamp(2rem, 4.5vw, 3rem);
  padding-top: 1.35rem;
  border-top: 1px solid var(--c-line-soft);
  font-size: 0.78rem;
}
.footer__icp {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: rgba(167, 189, 178, 0.8);
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.15rem;
  list-style: none;
}
.footer__legal a {
  color: var(--c-mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease-out);
}
.footer__legal a:hover,
.footer__legal a:focus-visible { color: var(--c-mint); }
.footer__copy { margin: 0; color: rgba(167, 189, 178, 0.75); }
.footer__notice {
  margin: 1rem 0 0;
  font-size: 0.76rem;
  line-height: 1.8;
  color: rgba(167, 189, 178, 0.66);
}

/* ---------- 10. 焦点与可访问性 ---------- */
:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 3px;
  border-radius: var(--sk-radius);
}
.site-header :focus-visible { outline-offset: 2px; }

/* ---------- 11. 响应式：平板 ---------- */
@media (max-width: 1080px) {
  .footer__grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr) minmax(0, 0.9fr); }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.4rem var(--sk-gutter) 1.5rem;
    background-color: var(--c-deep);
    border-bottom: 1px solid var(--c-mint-28);
    box-shadow: 0 34px 60px -34px rgba(0, 0, 0, 0.95);
    max-height: calc(100vh - var(--sk-header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .site-header[data-open] .site-nav { display: flex; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 0.35rem;
  }
  .site-nav__item + .site-nav__item { border-top: 1px solid rgba(30, 74, 62, 0.55); }
  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    gap: 0.85rem;
    padding: 0.95rem 0.2rem;
    font-size: 0.95rem;
  }
  .site-nav__index { font-size: 0.62rem; min-width: 1.6em; }
  .site-nav__link::after {
    left: 0.2rem;
    right: auto;
    width: 34px;
    bottom: 0.55rem;
    transform: scaleX(0) skewX(-24deg);
  }
  .site-nav__link[aria-current="page"]::after { transform: scaleX(1) skewX(-24deg); }
  .site-nav__link[aria-current="page"] { color: var(--c-mint); }
  .site-nav__cta { margin-top: 1.1rem; width: 100%; }

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

  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
  .footer__summary { max-width: none; }
}

/* ---------- 12. 响应式：手机 ---------- */
@media (max-width: 620px) {
  :root { --sk-header-h: 64px; }

  .brand__desc { display: none; }
  .brand__mark { width: 36px; height: 36px; font-size: 1.05rem; }
  .brand__line { font-size: 0.9rem; }
  .nav-toggle__label { display: none; }

  .grid--halves,
  .grid--trio { grid-template-columns: minmax(0, 1fr); }

  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .footer__legal { gap: 0.45rem 1rem; }
  .footer__contact-row { grid-template-columns: 3.1em minmax(0, 1fr); }

  .breadcrumb { font-size: 0.78rem; }
  .btn { padding: 0.68rem 1.05rem; font-size: 0.78rem; }
}

/* ---------- 13. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress__bar { transition: none; }
  .site-header::after { transition: none; }
  .btn:hover,
  .footer__links a:hover { transform: none; }
}