/* ============================================================
   /assets/site.css — 华体育网主站 共享样式
   戈壁看台蓝图：暖沙底 + 技术网格 + 阶梯线条 + 墨绿锚点
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 色板 */
  --sk-sand: #F5EAD9;
  --sk-sand-deep: #EFE2CC;
  --sk-grit: #D9C6A8;
  --sk-red: #A8402A;
  --sk-red-deep: #7A2C1B;
  --sk-gold: #C4903F;
  --sk-gold-light: #E6C68C;
  --sk-green: #12352C;
  --sk-green-mid: #2F5F4E;
  --sk-ink: #1E1B16;
  --sk-muted: #6A5F52;
  --sk-glass: rgba(255, 255, 255, 0.72);
  --sk-glass-edge: rgba(230, 198, 140, 0.55);
  --sk-white: #FFFDF8;

  /* 排版 */
  --sk-font-sans: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --sk-font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;

  /* 尺度 */
  --sk-grid-line: 48px;
  --sk-container: 1240px;
  --sk-gutter: clamp(18px, 4vw, 40px);
  --sk-radius: 4px;
  --sk-radius-lg: 10px;
  --sk-header-h: 76px;

  /* 缓动 */
  --sk-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --sk-dur: 200ms;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

body {
  min-height: 100vh;
  font-family: var(--sk-font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--sk-ink);
  background-color: var(--sk-sand);
  background-image:
    linear-gradient(to right, rgba(217, 198, 168, 0.28) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(217, 198, 168, 0.28) 1px, transparent 1px);
  background-size: var(--sk-grid-line) var(--sk-grid-line);
  background-position: 0 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--sk-red);
  text-decoration: none;
  transition: color var(--sk-dur) var(--sk-ease),
              background-color var(--sk-dur) var(--sk-ease),
              border-color var(--sk-dur) var(--sk-ease);
}

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

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

/* 中文正文：稍宽字距与新标点 */
p, li, dd { letter-spacing: 0.01em; }

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

::selection {
  background: var(--sk-red);
  color: var(--sk-white);
}

/* ---------- 3. 布局容器 ---------- */
.sk-container {
  width: 100%;
  max-width: var(--sk-container);
  margin-inline: auto;
  padding-inline: var(--sk-gutter);
}

/* ---------- 4. 跳过链接 ---------- */
.sk-skip {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 18px;
  font-family: var(--sk-font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--sk-sand);
  background: var(--sk-green);
  border: 2px solid var(--sk-gold);
  border-radius: var(--sk-radius);
  transform: translateY(-160%);
  transition: transform var(--sk-dur) var(--sk-ease);
}

.sk-skip:focus-visible {
  transform: translateY(0);
  outline-color: var(--sk-gold-light);
}

/* ---------- 5. 头部命令栏 ---------- */
.sk-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(245, 234, 217, 0.94);
  border-bottom: 1px solid var(--sk-grit);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
}

.sk-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--sk-red), var(--sk-gold) 60%, var(--sk-green-mid));
  transform: scaleX(var(--sk-progress, 0));
  transform-origin: left center;
  transition: transform 120ms linear;
  pointer-events: none;
}

.sk-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  width: 100%;
  max-width: var(--sk-container);
  margin-inline: auto;
  min-height: var(--sk-header-h);
  padding: 10px var(--sk-gutter);
  transition: min-height var(--sk-dur) var(--sk-ease);
}

/* 品牌锁定 */
.sk-header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--sk-ink);
  text-decoration: none;
}

.sk-header__brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  font-family: var(--sk-font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--sk-sand);
  background: var(--sk-green);
  border: 1px solid var(--sk-gold);
  border-radius: 2px 10px 2px 2px;
  box-shadow: 4px 4px 0 0 rgba(196, 144, 63, 0.28);
  transition: background-color var(--sk-dur) var(--sk-ease),
              box-shadow var(--sk-dur) var(--sk-ease);
}

.sk-header__brand:hover .sk-header__brand-mark,
.sk-header__brand:focus-visible .sk-header__brand-mark {
  background: var(--sk-red);
  box-shadow: 5px 5px 0 0 rgba(18, 53, 44, 0.28);
}

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

.sk-header__brand-name {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--sk-ink);
}

.sk-header__tagline {
  font-family: var(--sk-font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--sk-muted);
  text-transform: uppercase;
}

/* 导航 */
.sk-nav { margin-left: auto; }

.sk-nav__list {
  display: flex;
  align-items: stretch;
  gap: 2px;
}

.sk-nav__item { position: relative; }

.sk-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 11px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--sk-ink);
  border: 1px solid transparent;
  border-radius: 2px;
  white-space: nowrap;
  transition: color var(--sk-dur) var(--sk-ease),
              background-color var(--sk-dur) var(--sk-ease),
              border-color var(--sk-dur) var(--sk-ease);
}

.sk-nav__index {
  font-family: var(--sk-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--sk-gold);
  transition: color var(--sk-dur) var(--sk-ease);
}

.sk-nav__link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 4px;
  height: 2px;
  background: var(--sk-red);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--sk-dur) var(--sk-ease);
}

.sk-nav__link:hover,
.sk-nav__link:focus-visible {
  color: var(--sk-red-deep);
  background: var(--sk-sand-deep);
  border-color: var(--sk-grit);
}

.sk-nav__link:hover::after,
.sk-nav__link:focus-visible::after { transform: scaleX(1); }

.sk-nav__link:hover .sk-nav__index,
.sk-nav__link:focus-visible .sk-nav__index { color: var(--sk-red); }

/* 当前项 */
.sk-nav__link[aria-current="page"] {
  color: var(--sk-red);
  font-weight: 800;
  background: rgba(230, 198, 140, 0.26);
  border-color: var(--sk-gold-light);
}

.sk-nav__link[aria-current="page"] .sk-nav__index {
  color: var(--sk-red-deep);
}

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

/* 头部动作区 */
.sk-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 移动导航按钮 */
.sk-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 13px;
  font-family: var(--sk-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--sk-ink);
  background: var(--sk-sand-deep);
  border: 1px solid var(--sk-grit);
  border-radius: 2px;
  transition: background-color var(--sk-dur) var(--sk-ease),
              border-color var(--sk-dur) var(--sk-ease);
}

.sk-nav-toggle:hover { background: var(--sk-gold-light); border-color: var(--sk-gold); }

.sk-nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 18px;
}

.sk-nav-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--sk-red);
  transition: transform var(--sk-dur) var(--sk-ease),
              width var(--sk-dur) var(--sk-ease);
}

.sk-nav-toggle__bars i:nth-child(1) { width: 18px; }
.sk-nav-toggle__bars i:nth-child(2) { width: 13px; }
.sk-nav-toggle__bars i:nth-child(3) { width: 8px; }

[data-nav-toggle][aria-expanded="true"] {
  background: var(--sk-green);
  color: var(--sk-sand);
  border-color: var(--sk-gold);
}

[data-nav-toggle][aria-expanded="true"] .sk-nav-toggle__bars i { background: var(--sk-gold-light); width: 18px; }
[data-nav-toggle][aria-expanded="true"] .sk-nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
[data-nav-toggle][aria-expanded="true"] .sk-nav-toggle__bars i:nth-child(2) { opacity: 0; }
[data-nav-toggle][aria-expanded="true"] .sk-nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 6. 按钮 ---------- */
.sk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  font-family: var(--sk-font-sans);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--sk-white);
  background: var(--sk-red);
  border: 1px solid var(--sk-red-deep);
  border-radius: 2px;
  text-decoration: none;
  transition: background-color var(--sk-dur) var(--sk-ease),
              color var(--sk-dur) var(--sk-ease),
              border-color var(--sk-dur) var(--sk-ease),
              box-shadow var(--sk-dur) var(--sk-ease);
  box-shadow: 3px 3px 0 0 rgba(122, 44, 27, 0.22);
}

.sk-btn:hover,
.sk-btn:focus-visible {
  background: var(--sk-red-deep);
  color: var(--sk-gold-light);
  border-color: var(--sk-green);
  box-shadow: 4px 4px 0 0 rgba(18, 53, 44, 0.26);
}

.sk-btn--sm {
  padding: 9px 15px;
  font-size: 13.5px;
  box-shadow: 2px 2px 0 0 rgba(122, 44, 27, 0.22);
}

.sk-btn--ghost {
  color: var(--sk-green);
  background: transparent;
  border-color: var(--sk-green-mid);
  box-shadow: none;
}

.sk-btn--ghost:hover,
.sk-btn--ghost:focus-visible {
  color: var(--sk-sand);
  background: var(--sk-green);
  border-color: var(--sk-gold);
  box-shadow: none;
}

/* ---------- 7. 分区与排版 ---------- */
.sk-section {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}

.sk-section--tint {
  background: var(--sk-sand-deep);
  border-block: 1px solid var(--sk-grit);
}

.sk-section--anchor {
  color: var(--sk-sand);
  background: var(--sk-green);
  border-block: 1px solid var(--sk-green-mid);
  background-image:
    linear-gradient(to right, rgba(230, 198, 140, 0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(230, 198, 140, 0.10) 1px, transparent 1px);
  background-size: var(--sk-grid-line) var(--sk-grid-line);
}

.sk-section--anchor .sk-title,
.sk-section--anchor .sk-lead { color: var(--sk-sand); }

.sk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sk-font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sk-red);
}

.sk-eyebrow::after {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--sk-gold);
}

.sk-section--anchor .sk-eyebrow { color: var(--sk-gold-light); }

.sk-index {
  display: inline-block;
  font-family: var(--sk-font-mono);
  font-size: 0.8em;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--sk-red);
}

.sk-title {
  font-size: clamp(1.55rem, 2.8vw, 2.2rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--sk-ink);
}

.sk-title--display {
  font-size: clamp(2.4rem, 5.6vw, 4.6rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.sk-lead {
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.14rem);
  line-height: 1.8;
  color: var(--sk-muted);
}

.sk-section--anchor .sk-lead { color: rgba(245, 234, 217, 0.82); }

/* ---------- 8. 面包屑 ---------- */
.sk-breadcrumb {
  padding-block: 16px;
  border-bottom: 1px solid rgba(217, 198, 168, 0.7);
}

.sk-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--sk-font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--sk-muted);
}

.sk-breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }

.sk-breadcrumb__item + .sk-breadcrumb__item::before {
  content: "/";
  color: var(--sk-grit);
}

.sk-breadcrumb__item a {
  color: var(--sk-green-mid);
  border-bottom: 1px solid transparent;
}

.sk-breadcrumb__item a:hover,
.sk-breadcrumb__item a:focus-visible {
  color: var(--sk-red);
  border-bottom-color: var(--sk-red);
}

.sk-breadcrumb__item [aria-current="page"] { color: var(--sk-red); font-weight: 600; }

/* ---------- 9. 网格 ---------- */
.sk-grid {
  display: grid;
  gap: var(--sk-grid-gap, 24px);
}

.sk-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

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

.sk-col--3 { grid-column: span 3; }
.sk-col--4 { grid-column: span 4; }
.sk-col--5 { grid-column: span 5; }
.sk-col--6 { grid-column: span 6; }
.sk-col--7 { grid-column: span 7; }
.sk-col--8 { grid-column: span 8; }
.sk-col--9 { grid-column: span 9; }
.sk-col--12 { grid-column: span 12; }

/* ---------- 10. 卡片与面板 ---------- */
.sk-card {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--sk-white);
  border: 1px solid var(--sk-grit);
  border-radius: var(--sk-radius);
  transition: border-color var(--sk-dur) var(--sk-ease),
              box-shadow var(--sk-dur) var(--sk-ease),
              transform var(--sk-dur) var(--sk-ease);
}

.sk-card:hover {
  border-color: var(--sk-gold);
  box-shadow: 0 6px 0 -2px rgba(196, 144, 63, 0.34);
}

.sk-card--solid {
  background: var(--sk-sand-deep);
  border-color: var(--sk-grit);
}

.sk-card--glass {
  background: var(--sk-glass);
  border: 1px solid var(--sk-glass-edge);
  border-radius: var(--sk-radius-lg);
  backdrop-filter: blur(10px) saturate(1.15);
  -webkit-backdrop-filter: blur(10px) saturate(1.15);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.sk-panel {
  border: 1px solid var(--sk-grit);
  border-radius: var(--sk-radius);
  background: var(--sk-white);
  overflow: hidden;
}

.sk-panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 14px 20px;
  background: var(--sk-sand-deep);
  border-bottom: 1px solid var(--sk-grit);
}

.sk-panel__head .sk-title { font-size: 1.05rem; }

.sk-panel__body { padding: clamp(18px, 2.4vw, 26px); }

/* ---------- 11. 标签 ---------- */
.sk-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--sk-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--sk-green);
  background: rgba(47, 95, 78, 0.10);
  border: 1px solid rgba(47, 95, 78, 0.34);
  border-radius: 2px;
}

.sk-tag--gold {
  color: #6B4A11;
  background: rgba(230, 198, 140, 0.42);
  border-color: var(--sk-gold);
}

.sk-tag--green {
  color: var(--sk-sand);
  background: var(--sk-green-mid);
  border-color: var(--sk-green);
}

/* ---------- 12. 图片容器基础规则 ---------- */
.sk-media {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(196, 144, 63, 0.24), rgba(168, 64, 42, 0.16) 55%, rgba(18, 53, 44, 0.18)),
    var(--sk-sand-deep);
  border: 1px solid var(--sk-grit);
  border-radius: var(--sk-radius);
}

.sk-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(18, 53, 44, 0.10) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(18, 53, 44, 0.08) 0 1px, transparent 1px 48px);
  pointer-events: none;
}

.sk-media > img,
.sk-media > picture,
.sk-media > svg {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sk-media--wide { aspect-ratio: 16 / 9; }
.sk-media--tall { aspect-ratio: 3 / 4; }
.sk-media--band { aspect-ratio: 21 / 9; }

.sk-media__caption {
  position: relative;
  z-index: 2;
  display: block;
  margin-top: 10px;
  font-family: var(--sk-font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--sk-muted);
  line-height: 1.6;
}

/* ---------- 13. 分隔线与斜向引导线 ---------- */
.sk-rule {
  height: 1px;
  background: var(--sk-grit);
  border: 0;
}

.sk-rule--diagonal {
  height: 56px;
  background: none;
  border: 0;
  position: relative;
  overflow: hidden;
}

.sk-rule--diagonal::before {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--sk-red) 18%, var(--sk-gold) 55%, var(--sk-green-mid) 88%, transparent);
  transform: rotate(-3deg);
  transform-origin: center;
}

/* ---------- 14. 页内锚点索引 ---------- */
.sk-anchor-rail {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px;
  background: var(--sk-glass);
  border: 1px solid var(--sk-glass-edge);
  border-radius: var(--sk-radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.sk-anchor-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 9px;
  font-size: 13px;
  font-weight: 500;
  color: var(--sk-muted);
  border-left: 2px solid transparent;
  border-radius: 0 2px 2px 0;
  transition: color var(--sk-dur) var(--sk-ease),
              background-color var(--sk-dur) var(--sk-ease),
              border-color var(--sk-dur) var(--sk-ease);
}

.sk-anchor-rail__link:hover,
.sk-anchor-rail__link:focus-visible {
  color: var(--sk-green);
  background: rgba(230, 198, 140, 0.26);
  border-left-color: var(--sk-gold);
}

.sk-anchor-rail__link[aria-current="true"] {
  color: var(--sk-red);
  font-weight: 800;
  background: rgba(168, 64, 42, 0.08);
  border-left-color: var(--sk-red);
}

/* ---------- 15. 显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--sk-ease), transform 420ms var(--sk-ease);
}

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

/* ---------- 16. 页脚 ---------- */
.sk-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  color: var(--sk-sand);
  background: var(--sk-green);
  background-image:
    linear-gradient(to right, rgba(230, 198, 140, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(230, 198, 140, 0.08) 1px, transparent 1px);
  background-size: var(--sk-grid-line) var(--sk-grid-line);
}

.sk-footer__guide {
  height: 44px;
  background:
    linear-gradient(180deg, var(--sk-sand) 0, var(--sk-sand) 44px, transparent 44px),
    linear-gradient(180deg, var(--sk-sand-deep) 0, var(--sk-sand-deep) 44px, transparent 44px);
  background-size: 100% 100%, 62% 100%;
  background-repeat: no-repeat;
  clip-path: polygon(0 0, 100% 0, 100% 42%, 0 100%);
}

.sk-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(36px, 5vw, 56px) clamp(24px, 3vw, 36px);
}

.sk-footer__brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 14px;
  font-family: var(--sk-font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--sk-green);
  background: var(--sk-gold-light);
  border: 1px solid var(--sk-gold);
  border-radius: 2px 10px 2px 2px;
}

.sk-footer__brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--sk-sand);
}

.sk-footer__closing {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(245, 234, 217, 0.78);
}

.sk-footer__meta {
  margin-top: 12px;
  font-family: var(--sk-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.8;
  color: var(--sk-gold-light);
}

.sk-footer__col-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--sk-gold-light);
  border-bottom: 1px solid rgba(230, 198, 140, 0.34);
}

.sk-footer__col-title .sk-index { color: var(--sk-gold); }

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

.sk-footer__links a {
  position: relative;
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  color: rgba(245, 234, 217, 0.86);
  border-bottom: 1px solid transparent;
  transition: color var(--sk-dur) var(--sk-ease),
              border-color var(--sk-dur) var(--sk-ease),
              padding-left var(--sk-dur) var(--sk-ease);
}

.sk-footer__links a:hover,
.sk-footer__links a:focus-visible {
  color: var(--sk-gold-light);
  border-bottom-color: var(--sk-gold);
  padding-left: 5px;
}

.sk-footer__contact {
  padding-block: clamp(20px, 3vw, 28px);
  border-top: 1px solid rgba(230, 198, 140, 0.28);
}

.sk-footer__contact-line {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 234, 217, 0.9);
}

.sk-footer__contact-line a {
  color: var(--sk-gold-light);
  border-bottom: 1px solid rgba(230, 198, 140, 0.5);
}

.sk-footer__contact-line a:hover,
.sk-footer__contact-line a:focus-visible {
  color: var(--sk-sand);
  border-bottom-color: var(--sk-sand);
}

.sk-footer__note {
  margin-top: 8px;
  max-width: 88ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(245, 234, 217, 0.58);
}

.sk-footer__bar {
  background: var(--sk-ink);
  border-top: 1px solid rgba(196, 144, 63, 0.4);
}

.sk-footer__bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 14px;
}

.sk-footer__copy,
.sk-footer__icp,
.sk-footer__brandword {
  font-family: var(--sk-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: rgba(245, 234, 217, 0.62);
}

.sk-footer__brandword { color: var(--sk-gold); letter-spacing: 0.12em; }

/* ---------- 17. 响应式：平板 ---------- */
@media (max-width: 1080px) {
  .sk-nav__link { padding: 9px 8px; font-size: 13.5px; }
  .sk-nav__index { display: none; }
  .sk-header__tagline { display: none; }
  .sk-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sk-footer__brand { grid-column: 1 / -1; }
}

/* ---------- 18. 响应式：手机 ---------- */
@media (max-width: 860px) {
  :root { --sk-header-h: 64px; }

  .sk-header__inner {
    flex-wrap: wrap;
    gap: 10px;
    padding-block: 9px;
  }

  .sk-header__brand { flex: 1 1 auto; min-width: 0; }
  .sk-header__brand-mark { width: 36px; height: 36px; font-size: 13px; }
  .sk-header__brand-name { font-size: 13.5px; }
  .sk-header__tagline { display: none; }

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

  .sk-header__actions { display: none; }

  .sk-nav {
    order: 3;
    flex-basis: 100%;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 260ms var(--sk-ease), opacity 180ms var(--sk-ease);
  }

  .sk-nav[data-open="true"] {
    max-height: 520px;
    opacity: 1;
  }

  .sk-nav__list {
    flex-direction: column;
    gap: 0;
    padding-block: 6px 10px;
    border-top: 1px solid var(--sk-grit);
  }

  .sk-nav__link {
    display: flex;
    width: 100%;
    padding: 12px 10px;
    font-size: 15px;
    border-bottom: 1px solid rgba(217, 198, 168, 0.6);
    border-radius: 0;
  }

  .sk-nav__index { display: inline-block; font-size: 11px; }

  .sk-nav__link::after { left: 10px; right: auto; width: 0; }

  .sk-nav__link[aria-current="page"]::after { width: 26px; transform: none; }

  .sk-nav[data-open="true"] .sk-nav__link {
    animation: sk-nav-in 220ms var(--sk-ease) both;
  }

  .sk-nav[data-open="true"] .sk-nav__item:nth-child(2) .sk-nav__link { animation-delay: 20ms; }
  .sk-nav[data-open="true"] .sk-nav__item:nth-child(3) .sk-nav__link { animation-delay: 40ms; }
  .sk-nav[data-open="true"] .sk-nav__item:nth-child(4) .sk-nav__link { animation-delay: 60ms; }
  .sk-nav[data-open="true"] .sk-nav__item:nth-child(5) .sk-nav__link { animation-delay: 80ms; }
  .sk-nav[data-open="true"] .sk-nav__item:nth-child(6) .sk-nav__link { animation-delay: 100ms; }
}

@keyframes sk-nav-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 19. 响应式：窄屏与网格折叠 ---------- */
@media (max-width: 760px) {
  body { font-size: 16px; }

  .sk-grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .sk-col--3,
  .sk-col--4,
  .sk-col--5,
  .sk-col--6 { grid-column: span 6; }

  .sk-col--7,
  .sk-col--8,
  .sk-col--9 { grid-column: span 6; }

  .sk-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
  .sk-footer__bar-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  :root { --sk-container: 100%; }
  .sk-footer__grid { grid-template-columns: 1fr; }
  .sk-header__brand-name { font-size: 12.5px; letter-spacing: 0; }
  .sk-btn { padding: 12px 18px; font-size: 14px; }
  .sk-breadcrumb__list { font-size: 10.5px; }
}

/* ---------- 20. 无障碍与降级 ---------- */
@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;
    scroll-behavior: auto !important;
  }

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

  .sk-nav { transition: none; }
}

@media (forced-colors: active) {
  .sk-btn,
  .sk-card,
  .sk-media,
  .sk-nav__link { border: 1px solid ButtonText; }
}