/* ============================================================
   乐鱼体育 全站共享样式 Site Kit
   File: /assets/site.css
   深海数据轨道 · 球场动势 · 杂志式编辑节奏
   ============================================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-weight: 400;
  line-height: 1.75;
  color: #0B1220;
  background: #052049;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

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

a {
  color: #2F80ED;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

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

::selection {
  background: rgba(255, 94, 58, 0.85);
  color: #fff;
}

:focus-visible {
  outline: 3px solid #FF5E3A;
  outline-offset: 2px;
}

:root {
  --deep-sea: #052049;
  --sea: #0B3A75;
  --bright-blue: #2F80ED;
  --coral: #FF5E3A;
  --neon-green: #ADF542;
  --foam: #F4F8FC;
  --ink: #0B1220;
  --cloud: #60708A;
  --wave: #25C6D4;
  --glass: rgba(255, 255, 255, 0.14);
  --rail-width: 96px;
  --header-height: 62px;
  --container: 1280px;
  --font-display: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --shadow-card: 0 10px 30px rgba(5, 32, 73, 0.12);
}

/* ---------- 2. 主内容骨架 ---------- */
.main-content {
  margin-left: var(--rail-width);
  min-height: 70vh;
  background: var(--foam);
  position: relative;
  z-index: 1;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

/* ---------- 3. Skip Link & Scroll Progress ---------- */
.skip-link {
  position: fixed;
  top: -100px;
  left: 12px;
  z-index: 320;
  background: var(--coral);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  padding: 12px 20px;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 100%, 8px 100%);
  transition: top 0.2s ease;
  text-decoration: none;
}

.skip-link:hover {
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
  text-decoration: none;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 260;
  background: rgba(173, 245, 66, 0.14);
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--coral) 0%, var(--wave) 55%, var(--neon-green) 100%);
  transition: width 0.08s linear;
}

/* ---------- 4. Header / 侧边轨道 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-width);
  background: var(--deep-sea);
  display: flex;
  flex-direction: column;
  z-index: 200;
  border-right: 1px solid rgba(173, 245, 66, 0.14);
}

.header-top {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--foam);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.brand:hover {
  text-decoration: none;
  color: var(--foam);
  opacity: 0.85;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-mark svg {
  width: 34px;
  height: 34px;
}

.brand-text {
  font-weight: 900;
  font-size: 13px;
  letter-spacing: -0.03em;
  transform: skewX(-2deg);
  white-space: nowrap;
  line-height: 1.2;
}

.brand-text span {
  color: var(--coral);
}

/* ---- 汉堡按钮 ---- */
.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--foam);
  flex-shrink: 0;
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 20px;
}

.nav-toggle-line {
  display: block;
  height: 2px;
  background: currentColor;
  transform-origin: center;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

/* ---- 轨道导航 ---- */
.site-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.nav-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 10px 0;
  overflow-y: auto;
}

.nav-item {
  margin: 2px 10px;
}

.nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 13px 4px 11px;
  color: rgba(244, 248, 252, 0.66);
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
  border-radius: 3px;
  position: relative;
  transition: background 0.2s ease, color 0.2s ease;
  text-decoration: none;
}

.nav-link::before {
  content: '';
  display: block;
  width: 8px;
  height: 8px;
  border: 1.5px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.8;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-link:hover {
  color: var(--foam);
  background: rgba(255, 255, 255, 0.06);
  text-decoration: none;
}

.nav-link[aria-current="page"] {
  color: var(--coral);
  background: rgba(255, 94, 58, 0.12);
}

.nav-link[aria-current="page"]::before {
  background: var(--coral);
  border-color: var(--coral);
  box-shadow: 0 0 10px rgba(255, 94, 58, 0.55);
}

/* ---- 轨道底部工具区 ---- */
.header-tools {
  padding: 12px 0 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.header-tools-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: rgba(244, 248, 252, 0.6);
  font-size: 10px;
  line-height: 1.2;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 3px;
  transition: color 0.2s ease, background 0.2s ease;
}

.header-tools-link:hover {
  color: var(--neon-green);
  background: rgba(173, 245, 66, 0.08);
  text-decoration: none;
}

.header-tools-link svg {
  width: 20px;
  height: 20px;
}

.header-tools-label {
  display: block;
}

.live-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--neon-green);
  padding: 4px 8px;
  border: 1px solid rgba(173, 245, 66, 0.35);
  border-radius: 20px;
}

.live-dot {
  width: 6px;
  height: 6px;
  background: var(--neon-green);
  border-radius: 50%;
  animation: live-pulse 1.6s ease-out infinite;
}

@keyframes live-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(173, 245, 66, 0.6); }
  70%  { box-shadow: 0 0 0 6px rgba(173, 245, 66, 0); }
  100% { box-shadow: 0 0 0 0 rgba(173, 245, 66, 0); }
}

/* ---- 移动端 Header（抽屉） ---- */
@media (max-width: 900px) {
  .main-content {
    margin-left: 0;
    padding-top: var(--header-height);
  }

  .site-header {
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: var(--header-height);
    flex-direction: row;
    align-items: center;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0 12px;
    z-index: 220;
  }

  .header-top {
    height: var(--header-height);
    border-bottom: none;
    flex-shrink: 0;
  }

  .brand {
    flex-direction: row;
    gap: 8px;
  }

  .brand-mark svg {
    width: 28px;
    height: 28px;
  }

  .brand-text {
    font-size: 16px;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: min(304px, 86vw);
    background: var(--deep-sea);
    box-shadow: 4px 0 28px rgba(0, 0, 0, 0.35);
    transform: translateX(-104%);
    transition: transform 0.3s ease;
    z-index: 220;
    padding: 18px 0 28px;
    flex: none;
    overflow-y: auto;
    min-height: 0;
  }

  .site-nav[data-open] {
    transform: translateX(0);
  }

  .nav-list {
    flex: none;
    padding: 0;
  }

  .nav-item {
    margin: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  }

  .nav-link {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    padding: 15px 22px;
    font-size: 15px;
    border-radius: 0;
    text-align: left;
  }

  .nav-link::before {
    width: 7px;
    height: 7px;
    flex-shrink: 0;
  }

  .header-tools {
    flex-direction: row;
    justify-content: flex-start;
    gap: 16px;
    padding: 16px 22px 8px;
    border-top: none;
  }

  .header-tools-link {
    flex-direction: row;
    gap: 8px;
    font-size: 12px;
    padding: 8px 10px;
  }
}

/* ---------- 5. Footer / 浪花页脚 ---------- */
.site-footer {
  background: var(--deep-sea);
  color: rgba(244, 248, 252, 0.72);
  position: relative;
}

.footer-wave {
  display: block;
  width: 100%;
  height: 52px;
  background: var(--foam);
  margin-bottom: -1px;
}

.footer-wave path {
  fill: var(--deep-sea);
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px clamp(20px, 4vw, 48px) 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 0.9fr 1.7fr;
  gap: 32px 48px;
}

.footer-brand {
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.03em;
  transform: skewX(-2deg);
  color: var(--foam);
  line-height: 1.2;
}

.footer-brand span {
  color: var(--coral);
}

.footer-slogan {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(244, 248, 252, 0.55);
  max-width: 300px;
  line-height: 1.7;
}

.footer-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(244, 248, 252, 0.45);
  max-width: 380px;
  border-left: 3px solid var(--coral);
  padding-left: 12px;
}

.footer-heading {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--neon-green);
  text-transform: uppercase;
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
  padding-left: 10px;
}

.footer-heading::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 4px;
  height: 14px;
  background: var(--coral);
  transform: skewX(-15deg);
}

.footer-list li + li {
  margin-top: 8px;
}

.footer-link {
  color: rgba(244, 248, 252, 0.72);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-link:hover {
  color: var(--neon-green);
  border-bottom-color: rgba(173, 245, 66, 0.4);
  text-decoration: none;
}

.footer-contact {
  display: flex;
  gap: 10px;
  font-size: 14px;
  margin: 10px 0;
  line-height: 1.6;
}

.footer-contact > span {
  flex-shrink: 0;
  min-width: 28px;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--wave);
}

.footer-service {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(244, 248, 252, 0.45);
  border-top: 1px dashed rgba(255, 255, 255, 0.15);
  padding-top: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 44px;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  font-size: 12px;
  color: rgba(244, 248, 252, 0.5);
}

.footer-icp {
  font-family: var(--font-data);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px 24px;
  }

  .footer-brand-block {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- 6. 通用容器与排版 ---------- */
.display-title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.08;
  transform: skewX(-2deg);
}

.section {
  position: relative;
  padding: clamp(56px, 8vw, 96px) 0;
}

.section-header {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 20px 24px;
  align-items: start;
  margin-bottom: 36px;
}

.section-index {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  color: var(--bright-blue);
  position: relative;
  display: inline-block;
}

.section-index::after {
  content: '';
  display: block;
  width: 100%;
  height: 4px;
  margin-top: 8px;
  background: var(--coral);
  transform: skewX(-18deg);
}

.section-title {
  font-size: clamp(26px, 3.4vw, 44px);
  margin-top: 6px;
}

.section-note {
  font-size: 13px;
  color: var(--cloud);
  line-height: 1.8;
  margin-top: 8px;
}

.rail-note {
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cloud);
  border-left: 2px solid var(--coral);
  padding-left: 10px;
  height: 120px;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .section-header {
    grid-template-columns: 52px 1fr;
    gap: 14px;
  }

  .rail-note {
    writing-mode: horizontal-tb;
    height: auto;
    border-left: none;
    border-top: 2px solid var(--coral);
    padding-left: 0;
    padding-top: 6px;
    white-space: normal;
  }
}

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  align-items: center;
  font-size: 13px;
  color: var(--cloud);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--cloud);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--coral);
  text-decoration: underline;
}

.breadcrumbs-sep {
  opacity: 0.5;
}

.breadcrumbs-current {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 8. 内页头版 ---------- */
.page-header {
  background: linear-gradient(135deg, var(--deep-sea) 0%, var(--sea) 55%, rgba(47, 128, 237, 0.55) 100%);
  color: var(--foam);
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: rgba(255, 94, 58, 0.22);
  transform: rotate(18deg);
  clip-path: polygon(0 0, 100% 0, 100% 78%, 0 100%);
  z-index: 0;
}

.page-header .breadcrumbs {
  position: relative;
  z-index: 1;
  color: rgba(244, 248, 252, 0.6);
  margin-bottom: 20px;
}

.page-header .breadcrumbs a {
  color: rgba(244, 248, 252, 0.7);
}

.page-header-title {
  font-size: clamp(32px, 5vw, 56px);
  color: #fff;
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.page-header-desc {
  position: relative;
  z-index: 1;
  max-width: 680px;
  color: rgba(244, 248, 252, 0.72);
  margin-top: 14px;
  font-size: 15px;
}

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  color: #fff;
  background: var(--coral);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 12px 100%);
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px) skewX(-2deg);
  box-shadow: 0 8px 24px rgba(255, 94, 58, 0.35);
}

.btn:active {
  transform: translateY(0) skewX(-2deg);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--deep-sea), 0 0 0 6px var(--neon-green);
}

.btn-secondary {
  background: var(--bright-blue);
}

.btn-secondary:hover {
  box-shadow: 0 8px 24px rgba(47, 128, 237, 0.35);
}

.btn-ghost {
  background: transparent;
  border: 1.5px solid rgba(255, 94, 58, 0.7);
  color: var(--coral);
  clip-path: none;
}

.btn-ghost:hover {
  background: rgba(255, 94, 58, 0.12);
  box-shadow: none;
}

/* ---------- 10. 卡片与数据面板 ---------- */
.card {
  background: var(--foam);
  box-shadow: var(--shadow-card);
  padding: 24px;
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: clip-path 0.35s ease, transform 0.35s ease, box-shadow 0.35s ease;
}

.card:hover {
  transform: translateY(-4px);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  box-shadow: 0 16px 36px rgba(5, 32, 73, 0.18);
}

.data-card {
  background: rgba(255, 255, 255, 0.14);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-left: 4px solid var(--coral);
  padding: 22px 24px;
  color: var(--foam);
  position: relative;
}

.data-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(244, 248, 252, 0.6);
  text-transform: uppercase;
  font-weight: 700;
}

.data-value {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 32px;
  color: var(--foam);
  line-height: 1.2;
  margin-top: 6px;
}

.glass-panel {
  background: rgba(255, 255, 255, 0.14);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 24px;
  color: var(--foam);
}

/* ---------- 11. 标签与状态点 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--foam);
  background: rgba(11, 58, 117, 0.85);
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 100%, 6px 100%);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon-green);
  display: inline-block;
}

/* ---------- 12. 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  background: var(--foam);
  box-shadow: var(--shadow-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}

.data-table thead th {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--sea);
  color: var(--foam);
  text-align: left;
  padding: 12px 16px;
  white-space: nowrap;
}

.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(5, 32, 73, 0.08);
  color: var(--ink);
}

.data-table tbody tr:nth-child(even) {
  background: rgba(11, 58, 117, 0.04);
}

.data-table tbody tr:hover {
  background: rgba(255, 94, 58, 0.06);
}

.data-table .num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
}

.data-table[data-sortable] thead th {
  cursor: pointer;
  user-select: none;
}

.data-table[data-sortable] thead th::after {
  content: '↕';
  font-family: var(--font-data);
  margin-left: 6px;
  font-size: 11px;
  opacity: 0.55;
  display: inline-block;
}

.data-table[data-sortable] thead th[data-active="asc"]::after {
  content: '↑';
  color: var(--neon-green);
  opacity: 1;
}

.data-table[data-sortable] thead th[data-active="desc"]::after {
  content: '↓';
  color: var(--coral);
  opacity: 1;
}

/* ---------- 13. 图片容器 ---------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--sea);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.img-frame::before {
  content: '';
  display: block;
  padding-top: 56.25%;
}

.img-frame img,
.img-frame video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.img-frame::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, transparent 50%, var(--coral) 50%);
  opacity: 0.9;
  z-index: 1;
}

.img-frame-4-3::before {
  padding-top: 75%;
}

.img-frame-1-1::before {
  padding-top: 100%;
}

.img-frame-portrait::before {
  padding-top: 125%;
}

.img-frame-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: rgba(244, 248, 252, 0.35);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 20px;
  z-index: 0;
}

/* ---------- 14. 可展开内容组（FAQ） ---------- */
.faq-item {
  border-bottom: 1px solid rgba(5, 32, 73, 0.12);
}

.faq-question {
  display: block;
  width: 100%;
  text-align: left;
  padding: 20px 48px 16px 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: none;
  border: none;
  position: relative;
  cursor: pointer;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--coral);
}

.faq-question::after {
  content: '+';
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
  color: var(--coral);
}

.faq-answer {
  display: none;
  padding: 0 48px 24px 0;
  color: var(--cloud);
  max-width: 760px;
  line-height: 1.8;
}

.faq-item[data-open] .faq-question::after {
  content: '−';
}

.faq-item[data-open] .faq-answer {
  display: block;
  animation: faq-in 0.25s ease both;
}

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

/* ---------- 15. 运动偏好与兼容 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}