/* ============================================================
   开云体育 全站共享样式
   路径：/assets/site.css
   说明：reset / CSS变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-card: #1e1e1e;
  --text-primary: #f5f5f5;
  --text-secondary: #b0b0b0;
  --text-muted: #6a6a6a;
  --brand-gold: #d4af37;
  --brand-gold-light: #f0d97a;
  --alert-red: #e74c3c;
  --grid-line: rgba(255, 255, 255, 0.08);
  --glass-layer: rgba(255, 255, 255, 0.05);
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, "Roboto Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --content-max: 1320px;
  --transition-fast: 0.18s ease;
  --transition-med: 0.3s ease;
}

html {
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
  min-height: 100vh;
}

@media (max-width: 767px) {
  body {
    background-attachment: scroll;
    background-size: 36px 36px;
  }
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-family: var(--font-sans);
  font-weight: 800;
  font-style: italic;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1em; }

a { color: var(--brand-gold); text-decoration-thickness: 1px; text-underline-offset: 3px; }

ul, ol { margin: 0 0 1em; padding-left: 1.2em; }

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

button { font-family: inherit; font-size: inherit; cursor: pointer; }

input, textarea, select { font-family: inherit; font-size: inherit; }

::selection {
  background: var(--brand-gold);
  color: #0a0a0a;
}

/* ---------- 2. 基础工具类 ---------- */
.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;
}

.is-hidden,
.is-hidden-by-search,
[data-hidden] {
  display: none !important;
}

.text-muted { color: var(--text-muted); }
.text-gold { color: var(--brand-gold); }
.text-red { color: var(--alert-red); }

/* ---------- 3. 容器 / 网格 ---------- */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.main-content {
  position: relative;
  z-index: 1;
}

#main-content {
  scroll-margin-top: 96px;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 991.98px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 639.98px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ---------- 4. 章节标题 / 页面头部 ---------- */
.section {
  padding: 72px 0;
}

.section--narrow {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  font-style: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-gold);
  margin-bottom: 14px;
}

.section-label::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--brand-gold);
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 680px;
}

.page-header {
  padding: 176px 0 56px;
}

.page-header__kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  font-style: normal;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-gold);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-header__kicker::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--brand-gold);
}

.page-header__title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.page-header__desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ---------- 5. 正文容器 ---------- */
.prose {
  max-width: 72ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.prose p {
  margin-bottom: 1.2em;
  text-align: justify;
}

.prose h2,
.prose h3 {
  margin-top: 1.4em;
  color: var(--text-primary);
}

.prose a {
  color: var(--brand-gold);
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumb {
  margin-bottom: 24px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

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

.breadcrumb-item:not(:last-child)::after {
  content: "/";
  margin: 0 10px;
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--brand-gold);
}

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

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid transparent;
  border-radius: 0;
  font-size: 0.9rem;
  font-weight: 700;
  font-style: normal;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.btn-gold {
  background: var(--brand-gold);
  border-color: var(--brand-gold);
  color: #0a0a0a;
}

.btn-gold:hover {
  background: var(--brand-gold-light);
  border-color: var(--brand-gold-light);
  color: #0a0a0a;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--grid-line);
  color: var(--text-secondary);
}

.btn-outline:hover {
  border-color: var(--brand-gold);
  color: var(--brand-gold);
}

/* ---------- 8. 标签 / 面板 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: var(--glass-layer);
  border: 1px solid var(--grid-line);
  border-radius: 999px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  font-style: normal;
}

.tag--gold {
  color: var(--brand-gold);
  border-color: rgba(212, 175, 55, 0.35);
  background: rgba(212, 175, 55, 0.08);
}

.tag--red {
  color: var(--alert-red);
  border-color: rgba(231, 76, 60, 0.35);
  background: rgba(231, 76, 60, 0.08);
}

.glass-panel {
  background: var(--glass-layer);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--grid-line);
  padding: 24px;
}

/* ---------- 9. 数据卡片 / 表格 / 提示框 ---------- */
.data-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--grid-line);
  padding: 28px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.data-card:hover {
  border-color: rgba(212, 175, 55, 0.35);
  background: #202020;
}

.data-card__index {
  display: inline-block;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-style: normal;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.data-card__num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  font-style: normal;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.data-card__num--gold {
  color: var(--brand-gold);
}

.data-card__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-style: normal;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.table-wrap {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--grid-line);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

.table-wrap th,
.table-wrap td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--grid-line);
  font-size: 0.85rem;
}

.table-wrap th {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-style: normal;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
}

.table-wrap td {
  color: var(--text-secondary);
}

.table-wrap tr:last-child td {
  border-bottom: none;
}

.highlight-box {
  background: rgba(212, 175, 55, 0.07);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-left: 3px solid var(--brand-gold);
  padding: 16px 20px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
}

.alert-box {
  background: rgba(231, 76, 60, 0.08);
  border: 1px solid rgba(231, 76, 60, 0.3);
  border-left: 3px solid var(--alert-red);
  padding: 16px 20px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ---------- 10. 图片容器 ---------- */
.image-frame {
  position: relative;
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--grid-line);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.image-frame--4x3 { aspect-ratio: 4 / 3; }
.image-frame--1x1 { aspect-ratio: 1 / 1; }

.image-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-med);
}

.image-frame:hover > img {
  transform: scale(1.03);
}

/* ---------- 11. 步骤卡片（技能树式路径） ---------- */
.step-card {
  position: relative;
  display: flex;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--grid-line);
  transition: border-color var(--transition-fast);
}

.step-card:hover {
  border-color: rgba(212, 175, 55, 0.3);
}

.step-card__num {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  font-style: normal;
  color: var(--brand-gold);
  flex-shrink: 0;
}

.step-card__body h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.step-card__body p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

.step-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--brand-gold);
  font-weight: 600;
  font-size: 0.82rem;
  text-decoration: none;
  margin-top: 8px;
}

.step-link:hover { text-decoration: underline; }

/* ---------- 12. 筛选组件 ---------- */
.filter-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background: transparent;
  border: 1px solid var(--grid-line);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  font-style: normal;
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: rgba(212, 175, 55, 0.4);
}

.filter-btn.is-active,
.filter-btn[data-active] {
  color: var(--brand-gold);
  border-color: var(--brand-gold);
  background: rgba(212, 175, 55, 0.1);
}

.search-empty {
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

/* ---------- 13. 滚动进度 / 跳转链接 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--brand-gold) 0%, var(--brand-gold-light) 100%);
  z-index: 2000;
  pointer-events: none;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2000;
  padding: 10px 20px;
  background: var(--brand-gold);
  border-radius: 8px;
  color: #0a0a0a;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  pointer-events: auto;
  transition: top var(--transition-fast);
}

.skip-link:focus-visible {
  top: 16px;
}

/* ---------- 14. 头部 / 胶囊导航 (移动优先) ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 12px 16px;
  pointer-events: none;
  transition: padding var(--transition-fast);
}

.site-header.is-scrolled {
  padding-top: 8px;
  padding-bottom: 8px;
}

.nav-capsule {
  pointer-events: auto;
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 6px 16px;
  background: rgba(18, 18, 18, 0.88);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--grid-line);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transition: box-shadow var(--transition-med), background-color var(--transition-fast);
}

.site-header.is-scrolled .nav-capsule {
  background: rgba(14, 14, 14, 0.94);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo__mark {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-gold);
  border-radius: 8px;
  color: #0a0a0a;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.02em;
  transition: background-color var(--transition-fast);
}

.brand-logo:hover .brand-logo__mark {
  background: var(--brand-gold-light);
}

.brand-logo__text {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 800;
  font-style: italic;
  color: var(--text-primary);
  white-space: nowrap;
}

/* 移动端导航：默认收起 */
.site-nav {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  background: rgba(16, 16, 16, 0.97);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--grid-line);
  border-radius: 20px;
  padding: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.site-nav[data-open] {
  display: flex;
}

.nav-list {
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
}

.nav-item {
  width: 100%;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  font-style: normal;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link[aria-current="page"] {
  color: var(--brand-gold);
  background: rgba(212, 175, 55, 0.1);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-style: normal;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.nav-link[aria-current="page"] .nav-index {
  color: var(--brand-gold);
}

.nav-text {
  display: block;
  line-height: 1.2;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--grid-line);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}

.search-input {
  width: 100%;
  padding: 9px 14px 9px 32px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--grid-line);
  border-radius: 999px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-style: normal;
  outline: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.search-input::placeholder { color: var(--text-muted); }

.search-input:focus {
  border-color: rgba(212, 175, 55, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.fav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 999px;
  color: var(--brand-gold);
  font-size: 0.8rem;
  font-weight: 600;
  font-style: normal;
  white-space: nowrap;
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.fav-btn:hover {
  background: rgba(212, 175, 55, 0.16);
  border-color: rgba(212, 175, 55, 0.45);
}

.fav-btn[aria-pressed="true"] {
  background: rgba(212, 175, 55, 0.22);
  border-color: var(--brand-gold);
  color: var(--brand-gold-light);
}

.fav-icon {
  font-size: 0.9rem;
  line-height: 1;
}

.fav-text {
  line-height: 1.2;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--grid-line);
  border-radius: 12px;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 15. 桌面端头部 ---------- */
@media (min-width: 992px) {
  .site-header {
    padding: 18px 24px;
  }

  .nav-capsule {
    gap: 12px;
    padding: 8px 10px 8px 18px;
    border-radius: 999px;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0;
    flex: 1;
    min-width: 0;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
    max-height: none;
    overflow: visible;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: 2px;
    margin-left: 12px;
  }

  .nav-item {
    width: auto;
  }

  .nav-link {
    width: auto;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.82rem;
  }

  .nav-actions {
    margin-left: auto;
    margin-top: 0;
    padding-top: 0;
    border-top: none;
  }

  .search-box {
    flex: 0 0 auto;
  }

  .search-input {
    width: 130px;
  }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
  .search-box { display: none; }
}

/* ---------- 16. 页脚 ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #101010 100%);
  border-top: 1px solid var(--grid-line);
  padding: 64px 0 0;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 5%, var(--brand-gold) 20%, transparent 50%, var(--brand-gold) 80%, transparent 95%);
  opacity: 0.35;
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--grid-line);
}

@media (max-width: 1023.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 639.98px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.75;
  margin: 0;
  max-width: 280px;
}

.footer-trust {
  margin: 12px 0 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-style: normal;
  line-height: 1.7;
  border-left: 2px solid var(--brand-gold);
  padding-left: 12px;
}

.footer-heading {
  margin: 0 0 18px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  font-style: normal;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.index-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-style: normal;
  color: var(--brand-gold);
}

.footer-nav ul,
.footer-contact ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.86rem;
  font-style: normal;
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--brand-gold);
  padding-left: 4px;
}

.footer-contact li {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 22px 0 28px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-style: normal;
}

.footer-copy { margin: 0; }
.footer-icp { margin: 0; }

.footer-legal {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-legal a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.74rem;
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--brand-gold);
}

.footer-legal__divider {
  color: var(--text-muted);
  opacity: 0.4;
}

@media (max-width: 767.98px) {
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* ---------- 17. 焦点 / 减少动效 ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--brand-gold);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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