/* ==========================================================
   四季体育 · 共享样式 /assets/site.css
   深绿 × 金色 · 左侧双层导航 · 运动场数据气质
   ========================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --deep-pine: #0B3B2E;
  --pine-700: #145C44;
  --pine-500: #1F7A5B;
  --moss-300: #9CCBB3;
  --gold: #EAA832;
  --gold-soft: #F6D488;
  --night: #121614;
  --charcoal: #232B27;
  --paper: #F3F0E8;
  --white: #FFFFFF;

  --font-heading: 'Noto Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', 'SF Mono', Consolas, monospace;

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --duration: 0.25s;

  --header-width: 280px;
  --container: 1280px;
  --container-narrow: 960px;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--white);
  background: var(--deep-pine);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

::selection {
  background: var(--gold);
  color: var(--night);
}

/* ---------- 链接与标题 ---------- */
a {
  color: var(--moss-300);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s var(--ease);
}
a:hover {
  color: var(--gold);
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 0.4em;
}
h1 { font-size: clamp(40px, 5vw, 72px); }
h2 { font-size: clamp(28px, 3.2vw, 42px); }
h3 { font-size: clamp(20px, 1.6vw, 26px); }
h4 { font-size: 18px; }

p {
  margin-bottom: 1em;
}

/* ---------- 焦点 ---------- */
:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 工具类 ---------- */
.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
  letter-spacing: 0.04em;
}
.text-gold { color: var(--gold); }
.text-moss { color: var(--moss-300); }
.bg-charcoal { background: var(--charcoal); }

/* ---------- 通用容器 ---------- */
.container-wide {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 48px;
}
.container-narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: 48px;
}

/* ---------- 页面外壳 ---------- */
.site-shell {
  margin-left: var(--header-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-content {
  flex: 1;
}
#main-content:focus {
  outline: none;
}

/* ---------- 顶部滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: var(--header-width);
  right: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  z-index: 3000;
  pointer-events: none;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  transform: translateY(-200%);
  background: var(--gold);
  color: var(--night);
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  padding: 14px 26px;
  border-radius: 0 0 14px 0;
  z-index: 4000;
  text-decoration: none;
  transition: transform 0.2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--night);
  outline: none;
}

/* ---------- 侧边头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--header-width);
  height: 100vh;
  height: 100dvh;
  background:
    linear-gradient(155deg, rgba(31, 122, 91, 0.16) 0%, transparent 55%),
    var(--deep-pine);
  border-right: 1px solid rgba(156, 203, 179, 0.12);
  display: flex;
  flex-direction: column;
  padding: 32px 28px 28px;
  z-index: 2500;
  overflow-y: auto;
}

.header-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-logo:hover {
  color: inherit;
}

.brand-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--gold);
  color: var(--night);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 20px;
  border-radius: 14px;
  transform: rotate(-4deg);
  box-shadow: 0 4px 14px rgba(234, 168, 50, 0.25);
  transition: transform 0.3s var(--ease);
}
.brand-logo:hover .brand-symbol {
  transform: rotate(0deg) scale(1.05);
}

.brand-id {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-id strong {
  font-size: 19px;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.brand-id em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.header-body {
  padding: 22px 0;
  border-top: 1px solid rgba(156, 203, 179, 0.12);
  border-bottom: 1px solid rgba(156, 203, 179, 0.12);
  margin-bottom: 20px;
}
.header-tagline {
  font-size: 13px;
  color: var(--moss-300);
  line-height: 1.6;
  margin-bottom: 6px;
}
.header-version {
  font-size: 11px;
  color: var(--gold-soft);
  letter-spacing: 0.1em;
}

.site-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 14px;
  color: var(--moss-300);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  line-height: 1.3;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.nav-link:hover {
  background: rgba(31, 122, 91, 0.28);
  color: var(--white);
  padding-left: 20px;
}
.nav-link[aria-current="page"] {
  background: rgba(234, 168, 50, 0.12);
  color: var(--gold);
  font-weight: 700;
  box-shadow: inset 3px 0 0 var(--gold);
}
.nav-link[aria-current="page"]:hover {
  color: var(--gold);
}
.nav-index {
  font-size: 11px;
  color: rgba(156, 203, 179, 0.55);
  min-width: 22px;
}
.nav-link[aria-current="page"] .nav-index {
  color: var(--gold);
}

.header-foot {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(156, 203, 179, 0.12);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.header-phone {
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
  text-decoration: none;
  padding: 4px 0;
}
.header-phone:hover {
  color: var(--gold-soft);
}
.header-meta {
  font-size: 10px;
  color: var(--moss-300);
  opacity: 0.65;
  letter-spacing: 0.15em;
}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 12px;
  border: 1px solid rgba(234, 168, 50, 0.4);
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  flex-shrink: 0;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav-toggle:hover {
  border-color: var(--gold);
  background: rgba(234, 168, 50, 0.08);
}
.nav-toggle .toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 移动遮罩 ---------- */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 11, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
  z-index: 1950;
}
.nav-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--night);
  border-top: 1px solid rgba(156, 203, 179, 0.1);
  margin-top: auto;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(234, 168, 50, 0.2) 50%, transparent 100%);
}

.footer-trust {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-top: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(156, 203, 179, 0.08);
}
.trust-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  background: rgba(234, 168, 50, 0.12);
  border: 1px solid rgba(234, 168, 50, 0.3);
  color: var(--gold);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}
.footer-trust p {
  font-size: 14px;
  color: var(--moss-300);
  line-height: 1.7;
  margin: 0;
  max-width: 860px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-top: 48px;
  padding-bottom: 48px;
}

.footer-about .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  margin-bottom: 20px;
}
.footer-about .footer-brand:hover {
  color: inherit;
}
.footer-about .footer-brand:hover .brand-symbol {
  transform: rotate(0deg) scale(1.05);
}

.footer-desc {
  font-size: 14px;
  color: var(--moss-300);
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 420px;
}

.footer-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-list a {
  color: var(--moss-300);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s var(--ease);
}
.footer-list a:hover {
  color: var(--gold);
}
.footer-list li {
  font-size: 14px;
  color: var(--moss-300);
  line-height: 1.6;
}

.footer-bottom {
  background: rgba(0, 0, 0, 0.25);
  border-top: 1px solid rgba(156, 203, 179, 0.08);
  padding: 18px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy {
  font-size: 13px;
  color: var(--moss-300);
  opacity: 0.85;
  margin: 0;
}
.footer-utility {
  display: flex;
  gap: 22px;
}
.footer-utility a {
  font-size: 13px;
  color: var(--moss-300);
  text-decoration: none;
  opacity: 0.9;
}
.footer-utility a:hover {
  color: var(--gold);
  opacity: 1;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.25s var(--ease), color 0.25s var(--ease),
              border-color 0.25s var(--ease), transform 0.25s var(--ease),
              box-shadow 0.25s var(--ease);
}
.btn-gold {
  background: var(--gold);
  color: var(--night);
}
.btn-gold:hover {
  background: var(--gold-soft);
  color: var(--night);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(234, 168, 50, 0.3);
}
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}
.btn-sm {
  min-height: 40px;
  padding: 8px 20px;
  font-size: 13px;
}

/* ---------- 胶囊与标签 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  background: rgba(156, 203, 179, 0.1);
  color: var(--moss-300);
  border: 1px solid rgba(156, 203, 179, 0.3);
  transition: all 0.2s var(--ease);
  min-height: 44px;
}
.pill:hover {
  background: var(--gold);
  color: var(--night);
  border-color: var(--gold);
}
.pill[aria-current="true"] {
  background: var(--gold);
  color: var(--night);
  border-color: var(--gold);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: rgba(234, 168, 50, 0.1);
  border: 1px solid rgba(234, 168, 50, 0.25);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--moss-300);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--moss-300);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.breadcrumb a:hover {
  color: var(--gold);
}
.breadcrumb-sep {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  opacity: 0.7;
}
.breadcrumb [aria-current="page"] {
  color: var(--white);
  font-weight: 500;
}

/* ---------- 页面头部 ---------- */
.page-head {
  padding: 56px 0 40px;
  border-bottom: 1px solid rgba(156, 203, 179, 0.12);
  margin-bottom: 48px;
}
.page-title {
  font-family: var(--font-heading);
  font-size: clamp(40px, 5.5vw, 76px);
  font-weight: 900;
  line-height: 1.05;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.page-title em {
  font-style: italic;
  color: var(--gold);
}
.page-sub {
  font-size: 16px;
  color: var(--moss-300);
  max-width: 640px;
}

/* ---------- 章节标题 ---------- */
.section-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-heading);
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 24px;
}
.section-title::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 0.45em;
  font-weight: 500;
  color: var(--gold);
  background: rgba(234, 168, 50, 0.1);
  border: 1px solid rgba(234, 168, 50, 0.3);
  padding: 4px 12px;
  border-radius: 999px;
  flex-shrink: 0;
}
.section-title .title-slash {
  color: var(--gold);
  font-style: italic;
  margin-left: auto;
  font-size: 0.7em;
  opacity: 0.6;
}

/* ---------- 引导段 ---------- */
.lead {
  font-size: 18px;
  line-height: 1.8;
  color: var(--moss-300);
}

/* ---------- 分隔线 ---------- */
.divider {
  height: 1px;
  border: none;
  background: linear-gradient(90deg, var(--gold), rgba(156, 203, 179, 0.15) 40%, transparent);
  margin: 48px 0;
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: 24px;
}
.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* ---------- 数据卡片 ---------- */
.data-card {
  background: var(--charcoal);
  border: 1px solid rgba(156, 203, 179, 0.12);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease),
              background 0.25s var(--ease);
}
.data-card:hover {
  transform: translateY(-4px);
  border-color: var(--pine-500);
}
.data-value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.2;
  color: var(--gold);
}
.data-label {
  display: block;
  font-size: 13px;
  color: var(--moss-300);
  letter-spacing: 0.05em;
  margin-top: 8px;
}

/* ---------- 图片容器 ---------- */
.image-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--charcoal);
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(156, 203, 179, 0.12);
}
.image-frame img,
.image-frame video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.image-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(31, 122, 91, 0.35) 0%, transparent 60%),
              radial-gradient(circle at 80% 20%, rgba(234, 168, 50, 0.15), transparent 50%);
  z-index: 2;
  pointer-events: none;
}
.image-frame::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 45%;
  height: 3px;
  background: var(--gold);
  border-radius: 0 3px 3px 0;
  z-index: 3;
}

/* ---------- 标签页 ---------- */
.tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px;
  background: var(--charcoal);
  border-radius: 999px;
  border: 1px solid rgba(156, 203, 179, 0.12);
  width: fit-content;
  max-width: 100%;
}
.tabs-tab {
  min-height: 44px;
  padding: 10px 24px;
  border-radius: 999px;
  background: transparent;
  color: var(--moss-300);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
}
.tabs-tab[aria-selected="true"] {
  background: var(--gold);
  color: var(--night);
}
.tabs-tab:hover:not([aria-selected="true"]) {
  background: rgba(31, 122, 91, 0.3);
  color: var(--white);
}
.tabs-panel {
  margin-top: 24px;
}
.tabs-panel[hidden] {
  display: none;
}

/* ---------- 技能路径 ---------- */
.skill-path {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-left: 40px;
}
.skill-path::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), var(--pine-500) 70%, rgba(31, 122, 91, 0.3));
  border-radius: 2px;
}
.skill-node {
  position: relative;
  background: var(--charcoal);
  border: 1px solid rgba(156, 203, 179, 0.12);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.skill-node:hover {
  border-color: var(--pine-500);
  transform: translateX(4px);
}
.skill-node::before {
  content: attr(data-step);
  position: absolute;
  left: -38px;
  top: 22px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  border: 3px solid var(--deep-pine);
}
.skill-node h3 {
  margin-bottom: 6px;
}
.skill-node p {
  font-size: 14px;
  color: var(--moss-300);
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .site-shell {
    margin-left: 0;
    padding-top: 64px;
  }
  .scroll-progress {
    left: 0;
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 64px;
    min-height: 0;
    padding: 8px 16px;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    border-right: none;
    border-bottom: 1px solid rgba(156, 203, 179, 0.15);
    overflow: visible;
    background: var(--deep-pine);
  }

  .header-brand {
    margin-bottom: 0;
    flex: 1;
    align-items: center;
  }

  .header-body,
  .header-foot {
    display: none;
  }

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

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    width: min(320px, 86vw);
    height: 100vh;
    height: 100dvh;
    background: var(--charcoal);
    padding: 72px 24px 32px;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    flex: none;
    gap: 2px;
    transform: translateX(105%);
    transition: transform 0.3s var(--ease);
    overflow-y: auto;
    z-index: 2000;
    border-radius: 20px 0 0 20px;
  }
  .site-nav[data-open] {
    transform: translateX(0);
    box-shadow: -30px 0 60px rgba(0, 0, 0, 0.5);
  }
  .site-nav::after {
    content: '四季体育 LIVE-SIJI';
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--gold);
    letter-spacing: 0.18em;
    padding: 0 16px 16px;
    border-bottom: 1px solid rgba(156, 203, 179, 0.12);
    margin-bottom: 16px;
  }

  .container-wide,
  .container-narrow {
    padding-inline: 24px;
  }
}

@media (max-width: 768px) {
  .container-wide,
  .container-narrow {
    padding-inline: 20px;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .footer-utility {
    flex-wrap: wrap;
    gap: 16px;
  }
  .tabs-nav {
    width: 100%;
    border-radius: 20px;
  }
  .tabs-tab {
    flex: 1;
    text-align: center;
    padding: 10px 14px;
  }
  .page-head {
    padding: 40px 0 32px;
    margin-bottom: 32px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
  .footer-about {
    grid-column: 1 / -1;
  }
}

/* ---------- 减弱动效 ---------- */
@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;
  }
}