/* Self-hosted fonts (latin subset) — Outfit / DM Sans / Abhaya Libre */
@font-face {
  font-family: 'Abhaya Libre';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/abhaya-libre-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Abhaya Libre';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/abhaya-libre-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Abhaya Libre';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/abhaya-libre-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Abhaya Libre';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/abhaya-libre-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Abhaya Libre';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('fonts/abhaya-libre-800.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/dm-sans-400.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/dm-sans-500.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/dm-sans-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('fonts/outfit-300.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/outfit-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/outfit-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/outfit-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/outfit-700.woff2') format('woff2');
}

/* ============================================================================
 * 设计系统 Design Tokens — 所有页面统一引用
 * ============================================================================ */
:root{
  /* 字体 */
  --font-zh: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "MiSans", system-ui, sans-serif;
  --font-zh-title: "PingFang SC", "Microsoft YaHei", "Source Han Serif SC", "Noto Serif SC", "FangSong", "STZhongsong", "SimSun", serif;
  --font-en: "Outfit", "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-meta: "DM Sans", "Outfit", system-ui, sans-serif;
  --font-digit: "Abhaya Libre", "Outfit", serif;

  /* 间距(8 倍数) */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-7: 32px; --sp-8: 40px;
  --sp-9: 48px; --sp-10: 64px; --sp-11: 80px; --sp-12: 120px;

  /* 圆角 */
  --r-sm: 8px;  --r-md: 12px; --r-lg: 16px;
  --r-xl: 24px; --r-2xl: 32px; --r-full: 999px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(24,30,37,.04), 0 1px 3px rgba(24,30,37,.06);
  --sh-md: 0 4px 16px rgba(24,30,37,.08);
  --sh-lg: 0 12px 32px -8px rgba(24,30,37,.12);
  --sh-xl: 0 24px 64px -16px rgba(24,30,37,.16);

  /* 容器 */
  --max-w: 1320px;
  --max-w-narrow: 1126px;
  --header-h-mobile: 50px;
  --header-h-desktop: 78px;

  /* nav 字号(全站 nav / dropdown / 移动菜单统一引用) */
  --nav-fs:      14px;   /* 主菜单 / 下拉菜单 / EN / 移动菜单正文 */
  --nav-fs-sm:   12px;   /* 分类标签 / 中英小标 / 副信息 */
  --nav-fs-xs:   11px;   /* badge / 微提示 */
  --brand-fs:    15px;   /* 品牌 logo(只此一处) */
  --mobile-h-fs: 16px;   /* 移动端主项标题(跟 brand 呼应) */

  /* 颜色(全端通用,不能锁在媒体查询里,否则手机端品牌色丢失) */
  --bg: #ffffff;
  --text: #181E25;
  --text-2: #000000;
  --muted: #86909C;
  --muted-2: #6E7782;
  --line: #F2F3F5;
  --line-2: #F4F4F4;
  --soft: #F7F8FA;

  /* 品牌色(紫蓝渐变) */
  --brand-purple: #6B2BC9;
  --brand-purple-light: #B14AFF;
  --brand-blue: #1BA4FF;
  --brand-blue-light: #38CDFF;
  --brand-grad: linear-gradient(90deg, var(--brand-purple) 0%, var(--brand-purple-light) 100%);
  --brand-grad-code: linear-gradient(90deg, var(--brand-blue) 0%, var(--brand-blue-light) 100%);

  /* 强调(浅紫底) */
  --tint-purple: rgba(107,43,201,0.08);
  --tint-blue: rgba(27,164,255,0.08);

  /* 旧名兼容 */
  --grad: var(--brand-grad);
  --grad-code: var(--brand-grad-code);
}
@media(min-width:768px){
  :root{
    --nav-fs:      15px;
    --nav-fs-sm:   13px;
    --brand-fs:    18px;
    --mobile-h-fs: 18px;
  }
}

/* 通用 reset */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body{
  font-family: var(--font-zh);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 14px;
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; padding: 0; }
svg { display: block; }

/* 字体工具类 */
.outfit-title { font-family: var(--font-en); letter-spacing: -.01em; }
.font-misans { font-family: var(--font-zh); }
.font-fangyuan { font-family: var(--font-zh-title); }

/* 显示/隐藏工具类 */
.hide-mobile { display: none; }
.show-mobile { display: block; }
@media(min-width:768px){
  .hide-mobile { display: block; }
  .show-mobile { display: none; }
}

/* ============================================================================
 * 导航与品牌 (Nav)
 * ============================================================================ */
.nav-spacer{ height: var(--header-h-mobile); }
@media(min-width:768px){ .nav-spacer{ height: var(--header-h-desktop); } }

/* (后面是 site.css 原有内容,不含 :root) */
/* ============================ 梦步官网 共享样式 ============================
 * 子页面 + partials 注入的 nav/footer 都用这个
 * index.html 仍是自包含(独立 style),但视觉上一致
 * ====================================================================== */



* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body{
  font-family: var(--font-zh);
  color: var(--text);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

/* ============================ 顶部固定导航 78px ============================ */

.nav-cta{
  display: none;
  padding: 8px 16px; border-radius: 32px;
  font-size: var(--nav-fs-sm); font-weight: 500;
  color: #fff; background: var(--text);
  transition: opacity .2s, transform .2s;
}
@media(min-width:768px){ .nav-cta{ display: inline-flex; } }
.nav-cta.ghost{ background: transparent; color: var(--text); border: 1px solid var(--line); }
.nav-cta.ghost:hover{ background: var(--soft); }
.nav-cta:hover{ opacity: .85; }


.nav-spacer{ height: var(--header-h-mobile); }
@media(min-width:768px){ .nav-spacer{ height: var(--header-h-desktop); } }

.nav{
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  height: var(--header-h-mobile);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled{ border-bottom-color: var(--line); }
@media(min-width:768px){ .nav{ height: var(--header-h-desktop); } }
.nav-inner{
  height: 100%;
  max-width: var(--max-w); margin: 0 auto;
  padding: 0 16px;
  display: flex; align-items: center;
}
@media(min-width:768px){ .nav-inner{ padding: 0 60px; } }

/* Logo */
.brand{
  flex-shrink: 0;
  width: clamp(72px, 12vw, 140px);
  display: flex; align-items: center; gap: 8px;
  text-decoration: none;
  color: var(--text);
}
.brand-mark{
  width: 28px; height: 28px; border-radius: 7px;
  display: grid; place-items: center;
  overflow: hidden;
  flex-shrink: 0;
}
.brand-mark img{ width: 100%; height: 100%; object-fit: contain; display: block; }
.brand-name{
  font-family: var(--font-en);
  font-size: var(--brand-fs); font-weight: 600;
  letter-spacing: -.01em;
  white-space: nowrap;
}
/* .brand-name .en  死代码(partials.js 不用,保留以备将来 logo 中英混排)
.brand-name .en{ color: var(--muted-2); margin-left: 4px; font-weight: 400; font-size: var(--nav-fs-sm); } */

/* 菜单 */
.nav-menu{
  display: none;
  height: 100%;
  align-items: center;
  padding: 0 24px;
  font-size: var(--nav-fs); font-weight: 400;
  color: var(--text);
  overflow: visible;
}
@media(min-width:1100px){ .nav-menu{ display: flex; } }
.nav-item{
  position: relative;
  height: 100%;
  display: flex; align-items: center;
  padding: 0 2px;
}
.nav-label{
  display: inline-flex; align-items: center; gap: 2px;
  padding: 8px 16px; border-radius: 32px;
  font-size: var(--nav-fs); font-weight: 400; color: var(--text);
  white-space: nowrap;
  transition: background .25s;
  cursor: pointer;
}
a.nav-label{ color: var(--text); }
.nav-item:hover .nav-label{ background: var(--soft); }
.nav-item .chev{ width: 12px; height: 12px; opacity: .55; transition: transform .25s; }
.nav-item:hover .chev{ transform: rotate(180deg); }
.nav-item.active .nav-label{ background: var(--text); color: #fff; }
.nav-item.active .chev{ color: #fff; opacity: 1; }

.dropdown{
  position: absolute; top: 60px; left: -32px;
  background: #fff;
  box-shadow: 0 12px 32px -8px rgba(24,30,37,.12);
  border-radius: 0 0 24px 24px;
  padding: 8px 24px 16px;
  min-width: 280px;
  max-width: calc(100vw - 240px);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity .25s, transform .25s, visibility .25s;
  pointer-events: none;
  z-index: 30;
}
.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown{ opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.nav-item:focus-within .nav-label{ background: var(--soft); }
.nav-item:focus-within .chev{ transform: rotate(180deg); }
.dd-col{ padding: 8px 0; }
.dd-col + .dd-col{ border-top: 1px solid var(--line); margin-top: 8px; padding-top: 16px; }
.dd-cat{
  display: flex; align-items: center; gap: 8px;
  font-size: var(--nav-fs-sm); color: var(--muted-2);
  margin-bottom: 8px;
}
.dd-cat .ic{ width: 16px; height: 16px; opacity: .8; }
.dd-col a{
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 24px; border-radius: 12px;
  font-size: var(--nav-fs); font-weight: 400; line-height: 24px;
  color: #292929;
  transition: background .2s, color .2s;
  white-space: nowrap;
}
.dd-col a:hover{ background: var(--soft); color: var(--text); }
.dd-col a .badge{
  font-size: var(--nav-fs-xs); padding: 2px 8px; border-radius: 30px;
  background: var(--text); color: #fff;
  line-height: 1.6;
}

/* 右侧 */
.nav-right{ margin-left: auto; display: flex; align-items: center; gap: 8px; }
.nav-lang{
  display: none;
  padding: 8px 12px; border-radius: 32px;
  font-size: var(--nav-fs); color: var(--text);
  transition: background .25s;
}
@media(min-width:768px){ .nav-lang{ display: inline-flex; } }
.nav-lang:hover{ background: var(--soft); }

/* 移动端汉堡 */
.nav-burger{ display: flex; align-items: center; gap: 12px; margin-left: auto; }
@media(min-width:1100px){ .nav-burger{ display: none; } }
.burger-btn{
  width: 32px; height: 32px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  border-radius: 8px;
  cursor: pointer; background: transparent; border: 0;
}
.burger-btn span{
  display: block; width: 18px; height: 1.5px;
  background: var(--text);
  transition: transform .25s, opacity .25s;
}
.burger-btn.open span:nth-child(1){ transform: translateY(6.5px) rotate(45deg); }
.burger-btn.open span:nth-child(2){ opacity: 0; }
.burger-btn.open span:nth-child(3){ transform: translateY(-6.5px) rotate(-45deg); }

/* 移动菜单面板 */
.m-panel{
  position: fixed; top: 0; left: 0; right: 0;
  background: #fff;
  z-index: 90;
  height: 0; overflow: hidden;
  transition: height .3s ease;
  border-top: 1px solid var(--line);
}
.m-panel.open{ height: calc(100vh - var(--header-h-mobile)); }
.m-panel-inner{
  height: 100%;
  overflow-y: auto;
  padding: calc(var(--header-h-mobile) + 8px) 16px 24px;
  -webkit-overflow-scrolling: touch;
}
.m-item{ border-bottom: 1px solid var(--line); }
.m-item-head{
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0;
  cursor: pointer;
}
.m-item-head .t{
  font-family: var(--font-en);
  font-size: var(--mobile-h-fs); font-weight: 500;
  color: var(--text);
}
.m-item-head .t-link{ color: var(--text); text-decoration: none; }
.m-item-head .arr{ width: 20px; height: 20px; transition: transform .3s; }
.m-item.open .m-item-head .arr{ transform: rotate(90deg); }
.m-item-body{ max-height: 0; overflow: hidden; transition: max-height .3s; }
.m-item.open .m-item-body{ max-height: 800px; }
.m-item-body .col{ padding: 8px 0 16px; display: flex; flex-direction: column; gap: 6px; }
.m-item-body .grp-label{
  font-size: var(--nav-fs-sm); color: rgba(24,30,37,.4);
  padding: 4px 16px;
}
.m-item-body a{
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 24px;
  font-size: var(--nav-fs); color: var(--text);
  border-radius: 8px;
}
.m-item-body a .badge{
  font-size: var(--nav-fs-xs); padding: 2px 8px; border-radius: 30px;
  background: var(--text); color: #fff;
  line-height: 1.6;
}

/* ============================ Footer(深色) ============================ */
.footer{
  background: #000;
  padding: 80px 24px 40px;
  color: rgba(255,255,255,.6);
  margin-top: 80px;
}
@media(min-width:768px){ .footer{ padding: 80px 60px 40px; } }
.footer-inner{
  max-width: 1920px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media(min-width:768px){
  .footer-inner{ grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 40px; }
}
.f-brand{ display: flex; flex-direction: column; gap: 16px; }
.f-brand .brand-name{ color: #fff; }
.f-desc{
  font-family: var(--font-zh);
  font-size: 14px; line-height: 1.7;
  color: rgba(255,255,255,.55);
  max-width: 320px;
  margin: 0;
}
.f-col h4{
  margin: 0 0 16px;
  font-family: var(--font-zh);
  font-size: 14px; font-weight: 500;
  color: #fff;
  letter-spacing: .02em;
}
.f-col ul{ list-style: none; padding: 0; margin: 0; }
.f-col li{ margin-bottom: 12px; }
.f-col a{
  font-family: var(--font-zh);
  font-size: 14px;
  color: rgba(255,255,255,.55);
  transition: color .2s;
  text-decoration: none;
}
.f-col a:hover{ color: #fff; }
.f-bottom{
  max-width: 1920px;
  margin: 60px auto 0;
  padding: 24px 0 0;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; flex-direction: column; gap: 12px;
  font-family: var(--font-zh);
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
.f-bottom > div:first-child{ padding-left: 0; }
.f-bottom > div:last-child{ padding-right: 0; }
@media(min-width:768px){
  .f-bottom{ flex-direction: row; justify-content: space-between; align-items: center; }
}
.f-bottom a{ color: rgba(255,255,255,.55); }

/* ============================ 通用:子页面 容器 ============================ */
.page-hero{
  padding: 60px 24px 40px;
  max-width: var(--max-w);
  margin: 0 auto;
}
@media(min-width:768px){
  .page-hero{ padding: 100px 60px 60px; }
}
.page-hero .eyebrow{
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  color: #6B2BC9;
  letter-spacing: .04em;
  margin-bottom: 16px;
}
.page-hero h1{
  font-family: var(--font-en);
  font-size: 36px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--text);
  margin: 0 0 20px;
  white-space: nowrap;
}
@media(min-width:768px){
  .page-hero h1{ font-size: 64px; }
}
.page-hero .lead{
  font-family: var(--font-zh);
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted-2);
  max-width: 720px;
  margin: 0 0 32px;
}
.page-hero .badge{
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .04em;
  padding: 4px 10px;
  border-radius: 30px;
  background: rgba(107,43,201,.08);
  color: #6B2BC9;
  margin-left: 8px;
  vertical-align: middle;
  position: relative; top: -8px;
}
.page-hero .badge.code{ background: rgba(27,164,255,.08); color: #1BA4FF; }

/* Section 通用 */
.section{
  padding: 80px 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}
@media(min-width:768px){
  .section{ padding: 100px 60px; }
}
.section-head{ text-align: center; margin-bottom: 48px; }
.section-title{
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -.02em;
  margin: 0 0 12px;
}
@media(min-width:768px){
  .section-title{ font-size: 44px; }
}
.section-sub{
  font-family: var(--font-zh);
  font-size: 15px;
  color: var(--muted-2);
  margin: 0 auto;
  max-width: 640px;
  line-height: 1.7;
}

/* 卡片网格 */
.grid-3{
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media(min-width:768px){ .grid-3{ grid-template-columns: 1fr 1fr 1fr; } }

.grid-4{
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media(min-width:640px){ .grid-4{ grid-template-columns: 1fr 1fr; } }
@media(min-width:1024px){ .grid-4{ grid-template-columns: repeat(4, 1fr); } }

.card{
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 32px;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.card:hover{
  border-color: rgba(24,30,37,.15);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px rgba(24,30,37,.08);
}
.card h3{
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 8px;
  color: var(--text);
}
.card p{
  font-family: var(--font-zh);
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted-2);
  margin: 0;
}
.card .ic{
  width: 32px; height: 32px;
  margin-bottom: 20px;
  color: #6B2BC9;
}

/* CTA 区 */
.cta-band{
  background: #181E25;
  color: #fff;
  border-radius: 32px;
  padding: 60px 32px;
  text-align: center;
  margin: 0 24px 80px;
}
@media(min-width:768px){
  .cta-band{ margin: 0 60px 100px; padding: 80px 60px; }
}
.cta-band h2{
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 500;
  margin: 0 0 16px;
}
@media(min-width:768px){ .cta-band h2{ font-size: 44px; } }
.cta-band p{
  font-family: var(--font-zh);
  font-size: 15px;
  color: rgba(255,255,255,.65);
  margin: 0 0 32px;
  max-width: 560px;
  margin-left: auto; margin-right: auto;
  line-height: 1.7;
}

/* 基础 .btn 通用样式(所有页面) */
.btn{
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px;
  padding: 0 22px;
  border-radius: 60px;
  font-size: 15px; font-weight: 500;
  line-height: 1;
  background: var(--text);
  color: #fff;
  transition: background .2s, transform .2s, box-shadow .2s;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  border: 0;
}
@media(min-width:768px){
  .btn{ height: 48px; padding: 0 26px; font-size: 16px; }
}
.btn:hover{ background: #000; transform: translateY(-1px); }
.btn.primary{ background: var(--text); color: #fff; }
.btn.primary:hover{ background: #000; }
.btn.ghost{ background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.ghost:hover{ background: var(--soft); }
.btn.outline-light{ background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.3); }
.btn.outline-light:hover{ background: rgba(255,255,255,.08); }
.btn.lg{ height: 52px; padding: 0 32px; font-size: 16px; }
.btn.sm{ height: 36px; padding: 0 16px; font-size: 14px; }

.btns{ display: flex; gap: 12px; flex-wrap: wrap; }
.btns.center{ justify-content: center; }
.btns.end{ justify-content: flex-end; }
@media(max-width:767px){
  .btns .btn{ flex: 1 1 auto; min-width: 0; }
}

.cta-band .btns{ display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-band .btn{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 24px;
  border-radius: 32px;
  font-size: 15px; font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: opacity .2s, background .2s, transform .2s;
}
.cta-band .btn.primary{ background: #fff; color: #181E25; }
.cta-band .btn.primary:hover{ background: #F2F3F5; }
.cta-band .btn.ghost{ background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.3); }
.cta-band .btn.ghost:hover{ background: rgba(255,255,255,.08); }

/* 特性 row */
.feature-row{
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
  margin: 80px 0;
}
@media(min-width:900px){
  .feature-row{ grid-template-columns: 1fr 1fr; gap: 80px; }
}
.feature-row.reverse > :first-child{ order: 2; }
@media(max-width:899px){
  .feature-row.reverse > :first-child{ order: 0; }
}
.feature-text h2{
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 500;
  margin: 0 0 16px;
  letter-spacing: -.02em;
}
@media(min-width:768px){
  .feature-text h2{ font-size: 40px; }
}
.feature-text .lead{
  font-family: var(--font-zh);
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted-2);
  margin: 0 0 24px;
}
.feature-text ul{
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 12px;
}
.feature-text li{
  display: flex; gap: 12px; align-items: flex-start;
  font-family: var(--font-zh);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
}
.feature-text li::before{
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #6B2BC9;
  margin-top: 9px;
  flex-shrink: 0;
}
.feature-visual{
  position: relative;
  aspect-ratio: 4/3;
  border-radius: 24px;
  background-color: #0a0e15;
  background-image: linear-gradient(135deg, #1a1428 0%, #0a0e15 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.4);
  font-size: 14px;
  overflow: hidden;
}
.feature-visual:empty::before{
  content: "概念示意";
}
.feature-visual.code-blue{
  background-color: #051421;
  background-image: linear-gradient(135deg, #0a1d33 0%, #051421 100%);
}

/* 简化 hero 用 banner 图占位 */
.page-hero-visual{
  position: relative;
  width: 100%;
  aspect-ratio: 16/7;
  border-radius: 32px;
  overflow: hidden;
  background-color: #0a0e15;
  background-image: linear-gradient(135deg, #1a1428 0%, #0a0e15 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin: 32px 0 0;
}
.page-hero-visual.code-blue{
  background-color: #051421;
  background-image: linear-gradient(135deg, #0a1d33 0%, #051421 100%);
}
.page-hero-visual img,
.feature-visual img{
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

/* 占位/建设中文案 */
.placeholder{
  text-align: center;
  padding: 80px 24px 100px;
  max-width: 720px;
  margin: 0 auto;
}
.placeholder h1{
  font-family: var(--font-en);
  font-size: 36px;
  font-weight: 500;
  margin: 0 0 16px;
}
.placeholder p{
  font-family: var(--font-zh);
  font-size: 15px;
  color: var(--muted-2);
  line-height: 1.7;
  margin: 0 0 32px;
}
.placeholder .back{
  display: inline-block;
  padding: 12px 24px;
  border-radius: 32px;
  background: var(--text);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}


/* ============================================================================
 * 首页特有样式 (首页 index.html 用,子页面不引用以下类名)
 * 包含:Hero / Swiper 轮播 / 旗舰产品 models / 最新动态 research /
 *       关于 梦步运动 about / 通用按钮 cta-btn / 装饰 pill
 * ============================================================================ */

/* =============================================================
   字体系统 — 严格对齐 MiniMax
============================================================= */
:root{
  --font-zh: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "MiSans", system-ui, sans-serif;
  --font-zh-title: "PingFang SC", "Microsoft YaHei", "Source Han Serif SC", "Noto Serif SC", "FangSong", "STZhongsong", "SimSun", serif;
  --font-en: "Outfit", "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-meta: "DM Sans", "Outfit", system-ui, sans-serif;
  --font-digit: "Abhaya Libre", "Outfit", serif;

  --header-h-mobile: 50px;
  --header-h-desktop: 78px;

  --bg: #ffffff;
  --text: #181E25;
  --text-2: #000000;
  --muted: #86909C;
  --muted-2: #6E7782;
  --line: #F2F3F5;
  --line-2: #F4F4F4;
  --soft: #F7F8FA;

  --grad: linear-gradient(90deg, #6B2BC9 0%, #B14AFF 100%);
  --grad-code: linear-gradient(90deg, #1BA4FF 0%, #38CDFF 100%);
}

*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family: var(--font-zh);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 14px;
  line-height: 1.5;
  overflow-x: hidden;
}
a{color:inherit;text-decoration:none;}
button{font-family: inherit; cursor: pointer; border: 0; background: transparent; padding: 0;}
img{max-width:100%;display:block;}
svg{display:block;}
.outfit-title{font-family: var(--font-en); letter-spacing: -.01em;}
.font-misans{font-family: var(--font-zh);}
/* =============================================================
   Hero — 1:1 对齐 MiniMax 真实结构
   (白底标题区 + 大圆角 banner + 左右箭头 + dots)
============================================================= */
.hero{
  position: relative;
  background: #fff;
  padding: 24px 0 48px;
}
@media(min-width:768px){
  .hero{ padding: 32px 0 60px; }
}

/* 标题区(白底,在 banner 上方) */
.hero-top{
  text-align: center;
  padding: 16px 16px 32px;
  max-width: 900px;
  margin: 0 auto;
}
@media(min-width:768px){
  .hero-top{ padding: 16px 0 40px; }
}
.hero-title-container{
  display: flex; align-items: center; justify-content: center;
  min-height: 60px;
}
@media(min-width:768px){
  .hero-title-container{ min-height: 84px; }
}
.hero-title{
  margin: 0;
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 44px;
  line-height: 1.05;
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: center;
  gap: 6px 10px;
  color: #181E25;
  letter-spacing: -0.03em;
}
@media(min-width:768px){
  .hero-title{ font-size: 72px; }
}
.hero-title .main{ color: #181E25; }
.hero-title .ver{
  display: inline-flex; align-items: baseline; line-height: 1;
  background-image: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  font-weight: 500;
}
.hero-title .ver.code{
  background-image: var(--grad-code);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-title .ver.sm{
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.18em 0.42em;
  border-radius: 0.42em;
  background: rgba(107,43,201,0.08);
  -webkit-background-clip: padding-box;
  background-clip: padding-box;
  color: #6B2BC9;
  position: relative; top: -0.32em;
  margin-left: 0.18em;
}
.hero-title .ver.sm.code{
  color: #1BA4FF;
  background: rgba(27,164,255,0.08);
}
.hero-title .digit{
  font-family: var(--font-digit);
  font-weight: 800;
  font-size: 0.95em;
  line-height: 1;
  letter-spacing: -0.04em;
  color: #181E25;
  position: relative; top: -2px;
  font-style: normal;
}

.hero-subtitle{
  margin: 12px auto 0;
  text-align: center;
  font-family: var(--font-zh);
  font-size: 14px; line-height: 1.5;
  color: var(--text-2);
  max-width: 640px;
}
@media(min-width:768px){
  .hero-subtitle{ font-size: 16px; margin-top: 16px; }
}

/* CTA */
.hero-actions{
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: center;
  gap: 10px;
  margin-top: 24px;
  padding: 0 4px;
}
@media(min-width:768px){
  .hero-actions{ gap: 12px; margin-top: 28px; padding: 0; }
}
.cta-btn{
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 140px;
  flex: 1 1 auto;
  height: 44px;
  padding: 0 22px;
  border-radius: 60px;
  font-family: var(--font-zh);
  font-size: 15px; font-weight: 400;
  line-height: 1;
  background: #181E25;
  color: #fff;
  transition: background .25s, color .25s, transform .25s;
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  text-decoration: none;
}
@media(min-width:768px){
  .cta-btn{ flex: 0 0 auto; height: 48px; font-size: 16px; }
}
.cta-btn:hover{ background: #000; }
.cta-btn .label{
  display: inline-block;
  transform: translateX(8px);
  transition: transform .3s;
}
.cta-btn:hover .label{ transform: translateX(4px); }
.cta-btn .arr-wrap{
  position: absolute; right: 18px;
  display: inline-flex;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .3s, transform .3s;
}
.cta-btn:hover .arr-wrap{ opacity: 1; transform: translateX(0); }
.cta-btn .arrow{
  width: 14px; height: 14px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'><path d='M3 8h10M9 4l4 4-4 4' stroke='black' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center / contain;
  mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'><path d='M3 8h10M9 4l4 4-4 4' stroke='black' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center / contain;
}
.cta-btn.light{ background: #fff; color: #181E25; border: 1px solid #E1E2E5; }
.cta-btn.light:hover{ background: #F7F8FA; }
.cta-btn.outline{ background: transparent; border: 1px solid rgba(255,255,255,.4); color: #fff; }
.cta-btn.outline:hover{ background: rgba(255,255,255,.1); }

/* Banner Swiper(大圆角矩形 + 左右箭头) */
.swiper{
  position: relative;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 16px;
}
@media(min-width:768px){
  .swiper{ padding: 0 24px; }
}
.swiper-track{
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  width: 100%;
  /* banner 图已重出为 21:9 比例(3168x1234 ≈ 2.57:1),用 21/9 容器,cover 几乎不裁切 */
  aspect-ratio: 21/9;
}
@media(min-width:768px){
  .swiper-track{ border-radius: 24px; aspect-ratio: 21/9; }
}
.swiper-slide{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity .6s ease;
  pointer-events: none;
}
.swiper-slide.active{
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}
.slide-media{
  position: relative;
  background: #000;
  width: 100%;
  /* 与 .swiper-track 一致:21:9,banner 图本身就是接近 21:9,cover 几乎不裁切 */
  aspect-ratio: 21/9;
  height: auto;
  min-height: 200px;
}
@media(min-width:768px){
  .slide-media{ aspect-ratio: 21/9; min-height: 360px; }
}
.slide-media img{
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  /* 关键:fill 会强制拉伸导致变形,改 cover 让图按比例缩放;banner 已 21:9 基本不裁切 */
  object-fit: cover;
  object-position: center;
  display: block;
}

/* 左右切换箭头(覆盖在 banner 边缘) */
.arrow{
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,.08), 0 1px 3px rgba(0,0,0,.06);
  display: grid; place-items: center;
  z-index: 10;
  cursor: pointer;
  color: #181E25;
  transition: transform .2s, box-shadow .2s;
}
.arrow:hover{ transform: translateY(-50%) scale(1.05); box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.arrow svg{ width: 18px; height: 18px; }
.arrow-left{ left: 28px; }
.arrow-right{ right: 28px; }
@media(min-width:768px){
  .arrow{ width: 48px; height: 48px; }
  .arrow svg{ width: 20px; height: 20px; }
  .arrow-left{ left: 40px; }
  .arrow-right{ right: 40px; }
}

/* 轮播 dots */
.carousel-dots{
  display: flex; align-items: center; justify-content: center;
  gap: 4px;
  margin-top: 24px;
  padding: 0;
}
@media(min-width:768px){
  .carousel-dots{ gap: 8px; margin-top: 28px; }
}
.dot{
  height: 32px;
  width: 64px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 32px;
  background: transparent;
  border: 0; padding: 0; margin: 0;
  cursor: pointer;
}
.dot .bar{
  display: block;
  height: 4px; width: 100%;
  border-radius: 999px;
  background: rgba(24,30,37,.2);
  transition: background .3s;
}
.dot:hover .bar{ background: rgba(24,30,37,.45); }
.dot.active .bar{ background: var(--text); }

/* =============================================================
   板块:section — models / research
============================================================= */
.section{ width: 100%; }
.section-inner{
  margin: 50px auto 0;
  width: 100%;
  max-width: 1320px;
  padding: 0 16px;
}
@media(min-width:768px){
  .section-inner{ margin-top: 60px; padding: 0; }
}
.section-head{
  margin: 0 auto 36px;
  max-width: 760px;
  text-align: center;
}
.section-title{
  margin: 0;
  font-family: var(--font-zh-title);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -.2px;
  color: var(--text);
}
@media(min-width:768px){
  .section-title{ font-size: 40px; letter-spacing: -.3px; }
}
.section-sub{
  margin: 8px 0 0;
  font-family: var(--font-zh);
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted-2);
  display: flex; flex-direction: column; justify-content: center;
  word-break: break-word;
}
@media(min-width:768px){
  .section-sub{ font-size: 16px; }
}

/* =============================================================
   旗舰产品 — 2 列图文混排
============================================================= */
.models-grid{
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
  max-width: 1126px;
}
@media(min-width:768px){
  .models-grid{ grid-template-columns: 1fr 1fr; }
}
.model-card{
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  background: transparent;
  transition: background-color .3s;
  display: flex; flex-direction: column;
  padding: 10px 0;
  isolation: isolate;
}
@media(min-width:768px){
  .model-card{ border-radius: 24px; padding: 0; height: 264px; display: block; }
}
.model-card:hover{ background-color: var(--soft); }
.model-card.featured{
  background: linear-gradient(135deg, #181E25 0%, #232A33 100%);
  color: #fff;
}
.model-card.featured:hover{ background: linear-gradient(135deg, #1a2128 0%, #272e37 100%); }
.model-card.featured .model-title,
.model-card.featured .model-summary{ color: #fff; }
.model-card.featured .model-meta{ color: rgba(255,255,255,.6); }
.model-card.featured:hover .model-meta{ color: rgba(255,255,255,.85); }

.model-link{
  position: absolute; inset: 0; z-index: 20;
  text-decoration: none;
  outline: none;
}
.model-link:focus-visible{ box-shadow: inset 0 0 0 2px rgba(24,30,37,.3); }

.model-text{
  position: relative;
  z-index: 3;
  margin: 10px auto 0;
  width: min(calc(100% - 32px), 336px);
  display: flex; flex-direction: column;
  order: 2;
}
@media(min-width:768px){
  .model-text{
    position: absolute;
    left: 28px;
    top: 24px;
    bottom: 24px;
    width: 45%;
    max-width: 240px;
    margin: 0;
    overflow: hidden;
    justify-content: space-between;
    order: 0;
  }
}
.model-title{
  margin: 0;
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: -.4px;
  color: var(--text);
  white-space: pre-line;
}
.model-summary{
  margin: 4px 0 0;
  font-family: var(--font-zh);
  font-size: 14px;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-2);
}
@media(min-width:768px){
  .model-summary{ margin-top: 8px; font-size: 18px; }
}
.model-meta{
  margin-top: 12px;
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 4px 16px;
  font-family: var(--font-meta);
  font-size: 13px;
  line-height: 1;
  color: var(--muted);
}
@media(min-width:768px){
  .model-meta{ margin-top: auto; }
}
.model-meta .date{ display: inline-flex; align-items: center; font-size: 14px; line-height: 1.2; }
.model-meta .more{ display: inline-flex; align-items: center; font-size: 14px; line-height: 1.2; color: var(--muted); transition: opacity .2s; }
.model-card:hover .more{ opacity: .6; }
.model-meta .more::after{ content: " >"; margin-left: 4px; }

.model-image{
  position: relative;
  margin: 0 auto;
  width: min(calc(100% - 32px), 336px);
  height: 253px;
  overflow: hidden;
  border-radius: 12px;
  order: 1;
  z-index: 1;
  background: var(--soft);
  display: flex; align-items: center; justify-content: center;
  padding: 12px;
}
.model-card.featured .model-image{
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
  border: 1px solid rgba(255,255,255,0.06);
}
.model-image img{
  width: 100%; height: 100%;
  object-fit: contain;
  transition: transform .5s;
}
@media(min-width:768px){
  .model-image{
    position: absolute;
    right: 24px;
    top: 14px;
    bottom: 14px;
    left: auto;
    width: calc(50% - 32px);
    max-width: 280px;
    height: auto;
    aspect-ratio: 1/1;
    border-radius: 18px;
    margin: 0;
  }
}
.model-image img{
  width: 100%; height: 100%;
  object-fit: contain;
  transition: transform .5s;
}
.model-card:hover .model-image img{ transform: scale(1.03); }

/* =============================================================
   最新研究 — 2 列
============================================================= */
.research-grid{
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  max-width: 1126px;
}
@media(min-width:768px){
  .research-grid{ grid-template-columns: 1fr 1fr; gap: 24px; }
}
.research-card{
  position: relative;
  display: block;
  min-height: 137px;
  overflow: hidden;
  border-radius: 12px;
  background: transparent;
  transition: background-color .3s, transform .3s;
  isolation: isolate;
  padding: 16px 0;
  text-decoration: none;
  color: var(--text);
}
@media(min-width:768px){
  .research-card{ padding: 0; }
}
.research-card:hover{ background-color: var(--soft); }
.research-card .rc-body{
  position: relative;
  z-index: 10;
  padding: 0 12px;
  display: flex; flex-direction: column; gap: 8px;
  min-width: 0;
}
@media(min-width:768px){
  .research-card .rc-body{ padding: 24px 24px 0 24px; }
}
.tag-row{
  display: flex; flex-wrap: wrap;
  gap: 4px;
}
@media(min-width:768px){
  .tag-row{ gap: 8px; }
}
.tag{
  display: inline-flex; align-items: center;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--line-2);
  color: var(--text);
}
@media(min-width:768px){
  .tag{ font-size: 10px; padding: 2px 6px; }
}
.research-title{
  margin: 0;
  font-family: var(--font-zh);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--text);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  max-width: 490px;
}
@media(min-width:768px){
  .research-title{ font-size: 15px; }
}
.research-foot{
  position: relative;
  z-index: 10;
  margin: 16px 12px 16px;
  display: flex; align-items: center; gap: 16px;
  font-family: var(--font-meta);
  font-size: 13px;
  line-height: 1;
}
@media(min-width:768px){
  .research-foot{ margin: 16px 24px 24px; gap: 16px; }
}
.research-foot .date{
  display: inline-flex; align-items: center;
  color: var(--text);
  font-size: 13px;
}
.research-foot .more{
  display: inline-flex; align-items: center;
  color: var(--muted);
  font-size: 14px;
  transition: opacity .2s;
}
.research-card:hover .more{ opacity: .6; }
.research-foot .more::after{ content: " >"; margin-left: 4px; }
.research-image{
  position: relative;
  margin: 0 12px;
  height: 120px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--line-2);
}
@media(min-width:768px){
  .research-image{
    position: absolute;
    right: 12px; top: 50%;
    transform: translateY(-50%);
    width: 104px; height: 104px;
    margin: 0;
  }
}
.research-image img{
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  transition: transform .5s;
}
.research-card:hover .research-image img{ transform: scale(1.08); }

/* 查看全部 */
.view-all-wrap{
  margin-top: 20px;
  display: flex; justify-content: center;
}
@media(min-width:768px){
  .view-all-wrap{ margin-top: 40px; }
}
.view-all{
  display: inline-flex; align-items: center; justify-content: center;
  gap: .25em;
  padding: 12px 24px;
  border-radius: 16px;
  border: 1px solid var(--text);
  font-size: 14px;
  color: var(--text);
  background: transparent;
  transition: background .25s, color .25s;
  text-decoration: none;
}
.view-all:hover{ background: var(--text); color: #fff; }
.view-all::after{ content: " >"; margin-left: 4px; }

/* =============================================================
   关于我们
============================================================= */
.about{
  margin: 50px auto 0;
  width: calc(100% - 52px);
  max-width: 1320px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  background: #fff;
  align-items: center;
}
@media(min-width:1024px){
  .about{
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
  }
}
.about-image{
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: 20px;
  background-color: var(--soft);
  min-height: 320px;
}
.about-content{
  display: flex; flex-direction: column;
  padding-top: 8px;
}
.about-heading{
  margin: 0 0 8px;
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 40px;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text);
}
@media(min-width:1024px){
  .about-heading{ font-size: 56px; }
}
.about-tagline{
  margin: 0 0 24px;
  font-family: var(--font-zh-title);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--text-2);
}
@media(min-width:1024px){
  .about-tagline{ font-size: 28px; }
}
.pill{
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--line-2);
  color: rgba(0,0,0,.6);
  width: fit-content;
  font-family: var(--font-zh);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.1;
}
.about-paragraph{
  margin: 16px 0 0;
  font-family: var(--font-zh);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  text-align: justify;
}
.about-stats{
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media(min-width:768px){
  .about-stats{ grid-template-columns: repeat(4, 1fr); gap: 20px; }
}
@media(min-width:1024px){
  .about-stats{ margin-top: 46px; gap: 20px; }
}
.about-stat{
  display: flex; flex-direction: column; gap: 4px;
}
.about-stat .v{
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
}
.about-stat .v .plus{ color: var(--muted-2); font-weight: 500; }
.about-stat .v .unit{ color: var(--muted-2); font-weight: 500; }
@media(min-width:768px){
  .about-stat .v{ font-size: 36px; }
}
.about-stat .l{
  font-family: var(--font-zh);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--muted);
}
@media(min-width:768px){
  .about-stat .l{ font-weight: 300; }
}

/* =============================================================
   Footer(深色)
============================================================= */
.footer{
  background: #000;
  padding: 80px 24px 40px;
  color: rgba(255,255,255,.6);
  margin-top: 80px;
}
@media(min-width:768px){
  .footer{ padding: 80px 60px 40px; }
}
.footer-inner{
  max-width: 1920px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media(min-width:768px){
  .footer-inner{ grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 40px; }
}
.f-brand{ display: flex; flex-direction: column; gap: 16px; }
.f-brand .brand-name{ color: #fff; }
.f-tagline{
  font-family: var(--font-zh);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.55);
  max-width: 320px;
}
.f-col h5{
  margin: 0 0 16px;
  font-family: var(--font-zh);
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  letter-spacing: .02em;
}
.f-col ul{ list-style: none; padding: 0; margin: 0; }
.f-col li{ margin-bottom: 12px; }
.f-col a{
  font-family: var(--font-zh);
  font-size: 14px;
  color: rgba(255,255,255,.55);
  transition: color .2s;
  text-decoration: none;
}
.f-col a:hover{ color: #fff; }
.f-bottom{
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; flex-direction: column; gap: 12px;
  font-family: var(--font-zh);
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
@media(min-width:768px){
  .f-bottom{ flex-direction: row; justify-content: space-between; align-items: center; }
}
.f-bottom a{ color: rgba(255,255,255,.55); }

/* =============================================================
   A11y · 跳到主内容链接
============================================================= */
.skip-link{
  position: absolute;
  top: -100px;
  left: 8px;
  z-index: 9999;
  background: var(--brand-purple);
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus{
  top: 8px;
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* =============================================================
   A11y · 键盘焦点可见(focus-visible 统一描边)
============================================================= */
a:focus-visible,
button:focus-visible{
  outline: 2px solid var(--brand-purple);
  outline-offset: 2px;
  border-radius: 4px;
}
.model-link:focus-visible{
  outline-offset: -4px;
  box-shadow: inset 0 0 0 2px var(--brand-purple);
}

/* =============================================================
   A11y · 动效偏好(前庭障碍 / 低性能设备)
============================================================= */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  html{ scroll-behavior: auto; }
}

/* =============================================================
   浮动二维码小工具
============================================================= */
.qr-float{
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid rgba(107,43,201,.18);
  border-radius: 18px;
  padding: 14px 14px 12px;
  box-shadow: 0 20px 50px rgba(107,43,201,.18), 0 0 0 1px rgba(107,43,201,.06);
  width: 196px;
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.qr-float:hover{
  transform: translateY(-4px);
  box-shadow: 0 28px 60px rgba(107,43,201,.24), 0 0 0 1px rgba(107,43,201,.08);
}
.qr-float img{
  width: 168px; height: 168px;
  display: block;
  background: #fff;
  /* QR 识别要求 4 个角定位标记完整,不能有圆角裁切 */
  border-radius: 0;
  /* 抗锯齿关掉,避免缩放后边缘模糊影响识别 */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}
.qr-float .qr-title{
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-purple);
  margin: 0;
}
.qr-float .qr-sub{
  font-size: 12px;
  color: var(--muted-2);
  margin: 0;
  line-height: 1.4;
}
.qr-float .qr-tip{
  font-size: 11px;
  color: #c0392b;
  background: #fff8e1;
  margin: 4px -2px -2px;
  padding: 3px 4px;
  border-radius: 4px;
  line-height: 1.3;
}
.qr-float .qr-close{
  position: absolute;
  top: 6px; right: 8px;
  background: none; border: 0;
  color: var(--muted-2);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0;
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
}
.qr-float .qr-close:hover{ color: var(--text); }
@media(max-width:767px){
  .qr-float{
    right: 12px; bottom: 12px;
    width: 168px;
    padding: 12px 12px 10px;
  }
  .qr-float img{ width: 144px; height: 144px; }
  .qr-float .qr-title{ font-size: 13px; }
  .qr-float .qr-sub{ font-size: 11px; }
}

/* =============================================================
   法务页 (privacy / terms) 排版
============================================================= */
.legal-content{
  padding: 0 24px;
}
.legal-inner{
  max-width: 920px;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 56px 64px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 24px rgba(0,0,0,.04);
}
@media(max-width:767px){
  .legal-inner{ padding: 32px 24px; }
}
.legal-inner h2{
  font-size: 22px;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text);
}
.legal-inner h2:first-child{ margin-top: 0; }
.legal-inner h3{
  font-size: 16px;
  font-weight: 600;
  margin-top: 20px;
  margin-bottom: 8px;
  color: var(--text);
}
.legal-inner p{
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 12px;
}
.legal-inner ul{
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}
.legal-inner ul li{
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 4px;
}
.legal-inner strong{ color: var(--text); font-weight: 600; }
.legal-inner a{ color: var(--brand-purple); }

/* =============================================================
   二维码 section (M3 / H3 页面)
============================================================= */
.qr-section{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}
@media(max-width:767px){
  .qr-section{ grid-template-columns: 1fr; gap: 32px; }
}
.qr-card{
  text-align: center;
  background: rgba(255,255,255,.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(107,43,201,.12);
}
.qr-card .qr-img{
  width: 240px;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

/* =============================================================
   一些工具
============================================================= */
@media(max-width:767px){
  .hide-mobile{ display: none !important; }
}
@media(min-width:768px){
  .show-mobile{ display: none !important; }
}

/* =============================================================
   文章卡 (.post-card)  —— academy.html
============================================================= */
.post-card{
  padding: 0;
  overflow: hidden;
}
.post-card-cover{
  aspect-ratio: 16/9;
  background-size: cover;
  background-position: center;
}
.post-card-body{
  padding: 32px;
}
.post-card-title{
  margin: 0;
}
.post-card-meta{
  margin-top: 12px;
  color: var(--brand-purple);
  font-size: 13px;
}

/* =============================================================
   案例卡 (.case-card)  —— customers.html
============================================================= */
.case-card{
  margin-bottom: 24px;
  padding: 0;
  overflow: hidden;
}
.case-card-cover{
  aspect-ratio: 16/9;
  background-size: cover;
  background-position: center;
}
.case-card-body{
  padding: 32px;
}
.case-card-stats{
  margin-top: 16px;
}
.case-card-stat-num{
  color: var(--brand-purple);
  font-family: var(--font-digit);
  font-weight: 800;
  font-size: 24px;
  margin: 0;
}
.case-card-stat-label{
  font-size: 13px;
  color: var(--muted-2);
  margin: 0;
}
.case-card-foot{
  margin-top: 16px;
  color: var(--muted-2);
  font-size: 13px;
}

/* =============================================================
   客户证言 (.testimonial)  —— customers.html
   继承 .card 视觉 + 强调 quote 文案
============================================================= */
.testimonial{
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 32px;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.testimonial:hover{
  border-color: rgba(24,30,37,.15);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px rgba(24,30,37,.08);
}
.testimonial-text{
  font-size: 18px;
  line-height: 1.6;
  color: var(--text);
  margin: 0;
}
.testimonial-author{
  color: var(--muted-2);
  font-size: 13px;
  margin-top: 16px;
}

/* =============================================================
   表单 (.form-field)  —— contact.html
============================================================= */
.form-field{
  display: block;
  margin-bottom: 20px;
}
.form-field-label{
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 8px;
}
.form-input, .form-textarea, .form-select{
  width: 100%;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.form-input, .form-select{
  height: 48px;
}
.form-textarea{
  padding: 12px 16px;
  resize: vertical;
}
.form-input:focus, .form-textarea:focus, .form-select:focus{
  outline: none;
  border-color: var(--brand-purple);
  box-shadow: 0 0 0 3px rgba(107,43,201,.12);
}
.form-submit{
  width: 100%;
  height: 52px;
  font-size: 16px;
  margin-top: 8px;
}

/* =============================================================
   业态锚点卡 (.anchor-card)  —— customers.html
============================================================= */
.anchor-card{
  text-decoration: none;
  color: inherit;
  display: block;
}