/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#D6452F;
  --c-primary-dark:#A8311F;
  --c-primary-soft:#F6DED7;
  --c-secondary:#2E7D74;
  --c-secondary-soft:#DCEBE7;
  --c-bg:#FBF7F2;
  --c-bg-alt:#F4EDE4;
  --c-surface:#FFFFFF;
  --c-ink:#2A2320;
  --c-ink-2:#6B5F58;
  --c-ink-3:#9A8D85;
  --c-invert:#FDF9F5;
  --c-line:#EFE4DA;
  --c-line-2:#E4D8CE;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-p:999px;
  --sh-s:0 6px 24px rgba(120,60,40,.08);
  --sh-f:0 14px 40px rgba(120,60,40,.14);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --container:1200px;
  --pad-y:96px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-secondary);text-decoration:none;transition:color .22s ease}
a:hover,a:focus{color:var(--c-primary)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--c-ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;background:none;border:0;padding:0;margin:0;color:inherit;cursor:pointer;border-radius:0}
input,select,textarea{font-family:inherit}
::selection{background:var(--c-primary-soft);color:var(--c-ink)}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--pad-y) 0;background:var(--c-bg)}
.section-alt{background:var(--c-bg-alt)}
.section-white{background:var(--c-surface)}
.section-dark{background:#2A2320;color:var(--c-invert);position:relative;overflow:hidden}
.section-dark::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:5px 5px;opacity:.5;pointer-events:none;
}
.section-dark > .container{position:relative;z-index:2}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.row-head{
  max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:6px 14px;border-radius:var(--r-p);
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  margin-bottom:16px;
}
.section-dark .eyebrow{background:rgba(253,249,245,.12);color:#F6DED7}
.section-title{font-size:clamp(24px,2.6vw,36px);line-height:1.3;font-weight:700}
.section-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:720px}
.section-dark .section-title{color:var(--c-invert)}
.section-dark .section-sub{color:rgba(253,249,245,.74)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--c-secondary);border-bottom:1px solid transparent;transition:.22s;
}
.text-link:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);transform:translateX(2px)}
.section-dark .text-link{color:#9FD6CC}
.section-dark .text-link:hover{color:#F6DED7;border-bottom-color:#F6DED7}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-p);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(214,69,47,.24)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;box-shadow:var(--sh-f);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--c-secondary);color:var(--c-secondary)}
.btn-outline:hover{background:var(--c-secondary-soft);color:var(--c-secondary);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(253,249,245,.5);color:var(--c-invert)}
.btn-ghost:hover{background:rgba(253,249,245,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 32px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn:disabled{opacity:.45;pointer-events:none}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,.faq-q:focus-visible,
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:3px solid rgba(214,69,47,.35);outline-offset:2px;
}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;line-height:1;letter-spacing:.02em;
  padding:7px 12px;border-radius:var(--r-p);
  background:var(--c-secondary-soft);color:var(--c-secondary);
}
.tag-soft{background:#F6F1EA;color:var(--c-ink-2)}
.tag-warm{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.tag-line{background:transparent;border:1px solid var(--c-line-2);color:var(--c-ink-2)}
.meta{font-size:13px;color:var(--c-ink-3);letter-spacing:.01em}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,247,242,.94);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(120,60,40,.10)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform .32s ease,background .32s ease;
}
.brand:hover .brand-mark{transform:scale(1.08) rotate(-8deg);background:#F2D2C8}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:10px;font-weight:500;letter-spacing:.2em;color:var(--c-ink-3);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 13px;border-radius:var(--r-s);
  font-size:15px;color:var(--c-ink-2);transition:.2s;
}
.nav-link:hover{color:var(--c-ink);background:var(--c-bg-alt)}
.nav-link.is-active{color:var(--c-ink);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  color:var(--c-ink-2);background:var(--c-surface);border:1px solid var(--c-line);
  transition:.2s;
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-soft);box-shadow:var(--sh-s)}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-s);
  border:1px solid var(--c-line);background:var(--c-surface);
  flex-direction:column;align-items:center;justify-content:center;gap:6px;
}
.menu-btn span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:.28s}
body.drawer-open .menu-btn span:nth-child(1){transform:translateY(8px) rotate(45deg)}
body.drawer-open .menu-btn span:nth-child(2){opacity:0}
body.drawer-open .menu-btn span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* 搜索条 */
.search-bar{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  border-top:1px solid transparent;background:var(--c-surface);
}
.search-bar.is-open{max-height:120px;border-top-color:var(--c-line)}
.search-inner{display:flex;gap:12px;padding:16px 0}
.search-inner input{
  flex:1;height:46px;border:1px solid var(--c-line-2);border-radius:var(--r-s);
  padding:0 16px;font-size:15px;color:var(--c-ink);background:#fff;
}
.search-inner input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(214,69,47,.14);outline:none}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(42,35,32,.4);
  opacity:0;visibility:hidden;transition:.28s;z-index:90;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;bottom:0;width:300px;max-width:86vw;z-index:95;
  background:var(--c-bg);box-shadow:var(--sh-f);
  transform:translateX(-102%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:22px;
  overflow-y:auto;
}
body.drawer-open .mobile-drawer{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--c-line);color:var(--c-ink-2);background:#fff}
.drawer-search{display:flex;gap:8px;margin-bottom:18px}
.drawer-search input{flex:1;height:44px;border:1px solid var(--c-line-2);border-radius:var(--r-s);padding:0 12px;font-size:14px;background:#fff}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 4px;font-size:15px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a i{font-style:normal;color:var(--c-ink-3);font-size:16px}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:600}
.drawer-cta{margin-top:22px}
.drawer-note{margin-top:14px;font-size:12px;color:var(--c-ink-3);line-height:1.8}

/* ============ Hero 裂变邀请 ============ */
.hero{padding:36px 0 0;background:var(--c-bg)}
.hero-card{
  position:relative;overflow:hidden;border-radius:var(--r-l);
  background:#2A2320;color:var(--c-invert);box-shadow:var(--sh-f);
}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.4;transform:scale(1.02);
}
.hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(42,35,32,.95) 0%,rgba(42,35,32,.82) 48%,rgba(42,35,32,.58) 100%);
}
.hero-wing{
  position:absolute;right:-60px;top:-60px;width:320px;height:320px;
  border:1px solid rgba(253,249,245,.16);border-radius:50%;z-index:1;pointer-events:none;
}
.hero-wing::before{
  content:"";position:absolute;inset:38px;border:1px solid rgba(253,249,245,.12);
  border-radius:50% 8% 50% 8%;transform:rotate(18deg);
}
.hero-inner{
  position:relative;z-index:3;
  display:grid;grid-template-columns:1.28fr .72fr;gap:48px;
  padding:60px 56px;
}
.hero-copy h1{
  font-size:clamp(28px,3.6vw,46px);line-height:1.24;color:var(--c-invert);
  margin-bottom:20px;letter-spacing:-.01em;
}
.hero-copy h1 em{font-style:normal;color:#F0A48F}
.hero-lead{font-size:16px;line-height:1.9;color:rgba(253,249,245,.82);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(253,249,245,.72)}
.hero-trust svg{color:#8FCFC3;flex:none}

.invite-panel{
  background:var(--c-surface);color:var(--c-ink);
  border-radius:var(--r-l);padding:26px;box-shadow:var(--sh-f);
  align-self:start;
}
.invite-panel h2{font-size:17px;margin-bottom:4px}
.invite-panel .invite-tip{font-size:13px;color:var(--c-ink-3);margin-bottom:18px}
.progress-head{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;color:var(--c-ink-2);margin-bottom:8px}
.progress-head strong{font-size:19px;color:var(--c-primary);font-variant-numeric:tabular-nums;font-weight:700}
.progress{height:10px;border-radius:var(--r-p);background:var(--c-bg-alt);overflow:hidden}
.progress span{display:block;height:100%;border-radius:var(--r-p);background:linear-gradient(90deg,var(--c-primary),#E88A66)}
.invite-code{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin:18px 0 16px;padding:12px 14px;border-radius:var(--r-s);
  border:1px dashed var(--c-line-2);background:#FFFCF8;
  font-size:14px;color:var(--c-ink-2);letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.reward-list{display:grid;gap:10px;margin-bottom:18px}
.reward-list li{display:flex;gap:10px;font-size:13px;line-height:1.6;color:var(--c-ink-2)}
.reward-list .dot{
  width:20px;height:20px;flex:none;border-radius:50%;display:grid;place-items:center;
  background:var(--c-secondary-soft);color:var(--c-secondary);font-size:11px;font-weight:700;
}

/* ============ 指标看板 ============ */
.metric-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  overflow:hidden;box-shadow:var(--sh-s);
}
.metric{padding:28px 26px;border-right:1px solid var(--c-line);position:relative}
.metric:last-child{border-right:0}
.metric-num{
  display:block;font-size:40px;font-weight:700;line-height:1.1;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric-label{display:block;margin-top:8px;font-size:14px;color:var(--c-ink-2)}
.metric-trend{
  position:absolute;top:22px;right:20px;font-size:11px;font-weight:600;
  padding:4px 8px;border-radius:var(--r-p);background:var(--c-secondary-soft);color:var(--c-secondary);
}
.metric-trend.warm{background:var(--c-primary-soft);color:var(--c-primary-dark)}

/* ============ 话题矩阵 ============ */
.topic-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.topic-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  padding:24px;box-shadow:var(--sh-s);transition:.22s;display:flex;flex-direction:column;
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--sh-f);border-color:var(--c-primary-soft)}
.topic-card-lg{
  grid-column:span 2;grid-row:span 2;
  background:linear-gradient(160deg,#FFFFFF 0%,#FFF7F3 100%);
  padding:32px;
}
.topic-icon{
  width:46px;height:46px;border-radius:var(--r-m);display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary-dark);margin-bottom:18px;flex:none;
}
.topic-card:nth-child(even) .topic-icon{background:var(--c-secondary-soft);color:var(--c-secondary)}
.topic-card h3{font-size:20px;line-height:1.45;margin-bottom:10px}
.topic-card-lg h3{font-size:24px}
.topic-card p{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin-bottom:18px}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}

/* ============ 最新动态表 ============ */
.update-table{
  border:1px solid var(--c-line);border-radius:var(--r-m);overflow:hidden;
  background:var(--c-surface);box-shadow:var(--sh-s);
}
.update-row{
  display:grid;grid-template-columns:2.6fr 1fr 1fr .9fr;gap:16px;align-items:center;
  padding:16px 24px;border-bottom:1px solid var(--c-line);font-size:15px;transition:background .2s;
}
.update-row:last-child{border-bottom:0}
.update-row:hover{background:#FFFBF7}
.update-row.head{
  background:var(--c-bg-alt);font-size:13px;font-weight:600;color:var(--c-ink-3);
  letter-spacing:.04em;padding-top:13px;padding-bottom:13px;
}
.update-row .u-title{font-weight:600;color:var(--c-ink)}
.update-row .u-channel{color:var(--c-ink-2);font-size:14px}
.update-row .u-time{color:var(--c-ink-3);font-size:14px;font-variant-numeric:tabular-nums}
.status{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 10px;border-radius:var(--r-p);background:var(--c-secondary-soft);color:var(--c-secondary);
}
.status.warm{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.status::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}

/* ============ 频道入口 ============ */
.channel-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.channel-card{
  display:flex;align-items:center;gap:16px;
  padding:22px 24px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);box-shadow:var(--sh-s);transition:.22s;color:var(--c-ink);
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-f);border-color:var(--c-primary-soft);color:var(--c-ink)}
.channel-index{
  width:38px;height:38px;flex:none;border-radius:var(--r-p);display:grid;place-items:center;
  background:var(--c-bg-alt);color:var(--c-primary);font-weight:700;font-size:14px;
  font-variant-numeric:tabular-nums;
}
.channel-body{flex:1;min-width:0}
.channel-name{display:block;font-size:17px;font-weight:600;margin-bottom:3px}
.channel-meta{display:block;font-size:13px;color:var(--c-ink-3)}
.channel-arrow{color:var(--c-secondary);font-size:18px;transition:transform .22s}
.channel-card:hover .channel-arrow{transform:translateX(4px)}

/* ============ 资讯 / CMS 列表 ============ */
.news-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:28px;align-items:start}
.feature-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-s);transition:.22s;color:var(--c-ink);
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-f);color:var(--c-ink)}
.feature-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt)}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.feature-card:hover .feature-thumb img{transform:scale(1.03)}
.feature-body{padding:26px}
.feature-body h3{font-size:22px;line-height:1.45;margin:14px 0 10px}
.feature-body p{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin-bottom:14px}
.news-list{display:grid;gap:14px}
.news-item a{
  display:block;padding:18px 20px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-m);
  transition:.22s;color:var(--c-ink);
}
.news-item a:hover{transform:translateY(-2px);box-shadow:var(--sh-s);border-color:var(--c-primary-soft);color:var(--c-ink)}
.news-item h4{font-size:16px;line-height:1.5;margin:10px 0 6px;font-weight:600}
.news-item p{
  font-size:13px;line-height:1.7;color:var(--c-ink-2);margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  text-align:center;padding:64px 24px;background:var(--c-surface);
  border:1px dashed var(--c-line-2);border-radius:var(--r-l);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  display:grid;place-items:center;background:var(--c-bg-alt);color:var(--c-ink-3);
}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px}

/* ============ 版本更新 ============ */
.changelog{display:grid;gap:14px}
.log-item{
  display:grid;grid-template-columns:110px 1fr auto;gap:20px;align-items:center;
  padding:18px 24px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);transition:.22s;
}
.log-item:hover{box-shadow:var(--sh-s);border-color:var(--c-primary-soft)}
.log-ver{
  font-size:14px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.log-text strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px}
.log-text span{font-size:13px;color:var(--c-ink-3)}

/* ============ 多端同步 ============ */
.apps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.app-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  padding:28px 24px;transition:.22s;box-shadow:var(--sh-s);
}
.app-card:hover{transform:translateY(-3px);box-shadow:var(--sh-f)}
.app-card h3{font-size:18px;margin:16px 0 8px}
.app-card p{font-size:14px;color:var(--c-ink-2);line-height:1.8}
.app-icon{
  width:48px;height:48px;border-radius:var(--r-m);display:grid;place-items:center;
  background:var(--c-bg-alt);color:var(--c-primary);
}

/* ============ 结果对比 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.compare-card{border-radius:var(--r-m);padding:32px;border:1px solid var(--c-line)}
.compare-card h3{font-size:19px;margin-bottom:6px}
.compare-card .compare-sub{font-size:13px;color:var(--c-ink-3);margin-bottom:20px}
.compare-card.before{background:var(--c-bg-alt);color:var(--c-ink-2);box-shadow:none}
.compare-card.before h3{color:var(--c-ink-2)}
.compare-card.after{background:var(--c-surface);border-left:4px solid var(--c-primary);box-shadow:var(--sh-s)}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:13px 0;border-bottom:1px dashed var(--c-line-2);font-size:15px;line-height:1.7;
}
.compare-list li:last-child{border-bottom:0}
.compare-list .mark{flex:none;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;margin-top:3px}
.before .mark{background:#E7DCD1;color:#8B7A6E}
.after .mark{background:var(--c-secondary-soft);color:var(--c-secondary)}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:880px;margin:0 auto}
.timeline::before{
  content:"";position:absolute;left:50%;top:10px;bottom:10px;
  border-left:1px dashed var(--c-line-2);transform:translateX(-.5px);
}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 64px 1fr;align-items:center;margin-bottom:30px}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  padding:22px 24px;box-shadow:var(--sh-s);grid-column:1;transition:.22s;
}
.tl-card:hover{box-shadow:var(--sh-f);transform:translateY(-2px)}
.tl-item:nth-child(even) .tl-card{grid-column:3}
.tl-node{grid-column:2;justify-self:center;display:grid;place-items:center}
.tl-dot{
  width:36px;height:36px;border-radius:50%;border:2px solid var(--c-primary);
  background:var(--c-bg);display:grid;place-items:center;
}
.tl-dot::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--c-primary)}
.tl-period{
  font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:.04em;
  font-variant-numeric:tabular-nums;margin-bottom:6px;display:block;
}
.tl-card h3{font-size:17px;margin-bottom:6px}
.tl-card p{font-size:14px;color:var(--c-ink-2);line-height:1.75}

/* ============ 平台保障 ============ */
.safety-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.safety-copy h2{font-size:clamp(24px,2.6vw,34px);color:var(--c-invert);line-height:1.35;margin-bottom:18px}
.safety-copy p{color:rgba(253,249,245,.74);font-size:15px;line-height:1.85;margin-bottom:24px}
.safety-items{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.12);border-radius:var(--r-m);overflow:hidden}
.safety-item{background:#2A2320;padding:26px 24px}
.safety-item h3{font-size:16px;color:var(--c-invert);margin:12px 0 6px}
.safety-item p{font-size:13px;line-height:1.75;color:rgba(253,249,245,.66)}
.safety-item svg{color:#8FCFC3}

/* ============ 快速解答 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick-card{
  border:1px solid var(--c-line-2);border-radius:var(--r-m);padding:26px 24px;
  background:transparent;transition:.22s;
}
.quick-card:hover{border-color:var(--c-primary-soft);background:#FFFDFA}
.quick-card h3{font-size:16px;margin-bottom:10px;line-height:1.5}
.quick-card p{font-size:14px;line-height:1.8;color:var(--c-ink-2)}

/* ============ FAQ ============ */
.faq-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-s)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:22px 26px;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:background .2s;
}
.faq-q:hover{background:#FFFBF7}
.faq-num{
  font-size:14px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;flex:none;width:26px;
}
.faq-q .q-text{flex:1;line-height:1.5}
.faq-plus{
  width:22px;height:22px;position:relative;flex:none;transition:transform .3s ease;
  color:var(--c-primary);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-plus::before{left:0;right:0;top:10px;height:2px}
.faq-plus::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .3s}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 26px 24px 68px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ============ 场景专题 ============ */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:56px}
.scene-row:last-child{margin-bottom:0}
.scene-row.reverse .scene-media{order:2}
.scene-media{
  border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-s);aspect-ratio:3/2;background:var(--c-bg-alt);
}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.scene-media:hover img{transform:scale(1.03)}
.scene-copy h3{font-size:24px;line-height:1.4;margin:12px 0 14px}
.scene-copy p{font-size:15px;line-height:1.85;color:var(--c-ink-2);margin-bottom:20px}
.scene-points{display:grid;gap:10px;margin-bottom:22px}
.scene-points li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2);line-height:1.7}
.scene-points svg{color:var(--c-secondary);flex:none;margin-top:3px}

/* ============ 口碑 ============ */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.story-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  padding:26px 24px;box-shadow:var(--sh-s);transition:.22s;
}
.story-card:nth-child(2){margin-top:8px}
.story-card:nth-child(3){margin-top:16px}
.story-card:hover{transform:translateY(-3px);box-shadow:var(--sh-f)}
.story-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.story-avatar{width:56px;height:56px;border-radius:50%;overflow:hidden;flex:none;background:var(--c-bg-alt)}
.story-avatar img{width:100%;height:100%;object-fit:cover}
.story-name{font-size:15px;font-weight:600;line-height:1.4}
.story-role{font-size:12px;color:var(--c-ink-3)}
.story-quote{font-size:14px;line-height:1.85;color:var(--c-ink-2);margin-bottom:16px}
.story-foot{font-size:12px;color:var(--c-ink-3);border-top:1px dashed var(--c-line-2);padding-top:12px}

/* ============ 三步引导 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:32px 26px;box-shadow:var(--sh-s);transition:.22s;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-f)}
.step-num{
  font-size:56px;font-weight:700;line-height:1;letter-spacing:.02em;
  color:transparent;-webkit-text-stroke:1.5px var(--c-primary);
  font-variant-numeric:tabular-nums;margin-bottom:14px;display:block;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:14px;line-height:1.8;color:var(--c-ink-2)}

/* ============ 精选横滑 ============ */
.hscroll{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:16px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.hscroll::-webkit-scrollbar{height:6px}
.hscroll::-webkit-scrollbar-track{background:var(--c-bg-alt);border-radius:99px}
.hscroll::-webkit-scrollbar-thumb{background:var(--c-line-2);border-radius:99px}
.hcard{
  flex:0 0 268px;scroll-snap-align:start;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-m);overflow:hidden;
  box-shadow:var(--sh-s);transition:.22s;
}
.hcard:hover{transform:translateY(-4px);box-shadow:var(--sh-f)}
.hcard-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt)}
.hcard-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.hcard:hover .hcard-thumb img{transform:scale(1.04)}
.hcard-body{padding:18px}
.hcard-body h4{font-size:15px;line-height:1.5;margin-bottom:8px;font-weight:600}
.hcard-body .meta{font-size:12px}

/* ============ 转化表单 ============ */
.join-block{
  background:linear-gradient(150deg,#F6DED7 0%,#FBEFE8 60%,#F4EDE4 100%);
  border-radius:var(--r-l);padding:56px;position:relative;overflow:hidden;
}
.join-block::after{
  content:"";position:absolute;right:-80px;bottom:-80px;width:280px;height:280px;
  border:1px solid rgba(214,69,47,.2);border-radius:50% 8% 50% 8%;transform:rotate(24deg);
  pointer-events:none;
}
.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:2}
.join-copy h2{font-size:clamp(24px,2.8vw,34px);line-height:1.35;margin-bottom:16px}
.join-copy p{font-size:15px;line-height:1.85;color:var(--c-ink-2);margin-bottom:22px}
.join-points{display:grid;gap:12px}
.join-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-ink-2)}
.join-points svg{color:var(--c-secondary);flex:none;margin-top:4px}
.join-form{
  background:var(--c-surface);border-radius:var(--r-l);padding:32px;
  box-shadow:var(--sh-f);margin-right:-24px;
}
.join-form h3{font-size:19px;margin-bottom:6px}
.join-form .form-tip{font-size:13px;color:var(--c-ink-3);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink-2);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;border:1px solid var(--c-line-2);border-radius:var(--r-s);
  background:#fff;padding:0 14px;font-size:15px;color:var(--c-ink);transition:.2s;
}
.field input:focus,.field select:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(214,69,47,.14);outline:none;
}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--c-ink-2);line-height:1.7;margin-bottom:18px}
.check-line input{width:18px;height:18px;flex:none;margin-top:3px;accent-color:var(--c-primary)}
.form-note{font-size:12px;color:var(--c-ink-3);margin-top:12px;text-align:center}

/* ============ 收口横幅 ============ */
.cta-banner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--c-secondary-soft);border-radius:var(--r-p);
  padding:26px 40px;flex-wrap:wrap;
}
.cta-banner h3{font-size:19px;line-height:1.5}
.cta-banner p{font-size:14px;color:var(--c-ink-2);margin-top:4px}

/* ============ 页脚 ============ */
.site-footer{background:#2A2320;color:var(--c-invert);padding:72px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:5px 5px;opacity:.6;pointer-events:none;
}
.site-footer > .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-text{color:var(--c-invert);font-size:18px}
.footer-brand .brand-sub{color:rgba(253,249,245,.5)}
.footer-brand .brand-mark{background:rgba(253,249,245,.1);color:#F0A48F}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(253,249,245,.66);max-width:280px}
.footer-title{font-size:15px;font-weight:600;color:var(--c-invert);margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(253,249,245,.66)}
.footer-links a:hover{color:#F6DED7}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(253,249,245,.66);margin-bottom:14px}
.subscribe-form{display:flex;gap:8px}
.subscribe-form input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-s);border:1px solid rgba(253,249,245,.2);
  background:rgba(253,249,245,.08);color:var(--c-invert);padding:0 14px;font-size:14px;
}
.subscribe-form input::placeholder{color:rgba(253,249,245,.4)}
.subscribe-form input:focus{border-color:#F0A48F;outline:none;box-shadow:0 0 0 3px rgba(240,164,143,.2)}
.subscribe-form .btn{height:44px;padding:0 18px;font-size:14px}
.footer-bottom{
  border-top:1px solid rgba(253,249,245,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(253,249,245,.45);
}
.footer-bottom a{color:rgba(253,249,245,.45)}
.footer-bottom a:hover{color:#F6DED7}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  :root{--pad-y:72px}
  .main-nav{display:none}
  .menu-btn{display:flex}
  .header-actions .btn-primary{display:none}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:44px 36px}
  .invite-panel{max-width:520px}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line)}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .topic-card-lg{grid-column:span 2;grid-row:auto}
  .news-layout{grid-template-columns:1fr}
  .apps-grid{grid-template-columns:repeat(2,1fr)}
  .safety-grid{grid-template-columns:1fr;gap:32px}
  .quick-grid{grid-template-columns:1fr 1fr}
  .story-grid{grid-template-columns:1fr 1fr}
  .story-card:nth-child(3){margin-top:0}
  .scene-row{grid-template-columns:1fr;gap:28px}
  .scene-row.reverse .scene-media{order:0}
  .join-grid{grid-template-columns:1fr;gap:32px}
  .join-form{margin-right:0}
  .join-block{padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .timeline::before{left:18px}
  .tl-item{grid-template-columns:36px 1fr;gap:16px;margin-bottom:22px}
  .tl-node{grid-column:1;justify-self:start}
  .tl-item .tl-card,.tl-item:nth-child(even) .tl-card{grid-column:2}
  .tl-dot{width:24px;height:24px}
  .tl-dot::after{width:7px;height:7px}
}
@media screen and (max-width:768px){
  :root{--pad-y:56px}
  .container{padding:0 18px}
  .header-inner{height:64px;gap:12px}
  .brand-text{font-size:15px}
  .brand-sub{font-size:9px;letter-spacing:.16em}
  .section-title{font-size:24px}
  .hero-inner{padding:32px 22px}
  .hero-copy h1{font-size:27px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-trust{gap:14px}
  .invite-panel{padding:22px}
  .metric-num{font-size:32px}
  .metric{padding:22px 18px}
  .macro,.update-row{font-size:14px}
  .update-row{grid-template-columns:1fr auto;gap:6px 12px;padding:14px 18px}
  .update-row.head{display:none}
  .update-row .u-title{grid-column:1 / -1}
  .update-row .u-channel{grid-column:1}
  .update-row .u-time{grid-column:1;font-size:12px}
  .update-row .u-status{grid-column:2;grid-row:2 / span 2;justify-self:end}
  .channel-list{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .apps-grid{grid-template-columns:1fr}
  .story-grid{grid-template-columns:1fr}
  .story-card:nth-child(2),.story-card:nth-child(3){margin-top:0}
  .steps{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .log-item{grid-template-columns:1fr;gap:6px}
  .faq-q{padding:18px 18px;font-size:16px;gap:12px}
  .faq-a p{padding:0 18px 20px 48px;font-size:14px}
  .faq-num{width:20px;font-size:13px}
  .cta-banner{padding:22px 24px;flex-direction:column;align-items:flex-start;border-radius:var(--r-l)}
  .cta-banner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-desc{max-width:none}
  .footer-bottom{font-size:12px;flex-direction:column;align-items:flex-start;gap:8px}
  .join-block{padding:28px 20px}
  .join-form{padding:24px}
}
@media screen and (max-width:560px){
  .metric-row{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric:last-child{border-bottom:0}
  .topic-grid{grid-template-columns:1fr}
  .topic-card-lg{grid-column:span 1}
  .hero-copy h1{font-size:24px}
  .section-title{font-size:22px}
  .search-inner{flex-direction:column}
  .invite-code{font-size:12px;letter-spacing:.02em}
  .hcard{flex:0 0 78vw}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --c-primary:#D6452F;
  --c-primary-dark:#A8311F;
  --c-primary-soft:#F6DED7;
  --c-secondary:#2E7D74;
  --c-secondary-soft:#DCEBE7;
  --c-bg:#FBF7F2;
  --c-bg-alt:#F4EDE4;
  --c-surface:#FFFFFF;
  --c-ink:#2A2320;
  --c-ink-2:#6B5F58;
  --c-ink-3:#9A8D85;
  --c-invert:#FDF9F5;
  --c-line:#EFE4DA;
  --c-line-2:#E4D8CE;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-p:999px;
  --sh-s:0 6px 24px rgba(120,60,40,.08);
  --sh-f:0 14px 40px rgba(120,60,40,.14);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --container:1200px;
  --pad-y:96px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-secondary);text-decoration:none;transition:color .22s ease}
a:hover,a:focus{color:var(--c-primary)}
button{font-family:inherit;background:none;border:0;padding:0;margin:0;color:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
p{margin:0 0 16px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--pad-y) 0;background:var(--c-bg)}
.section-alt{background:var(--c-bg-alt)}
.section-white{background:var(--c-surface)}
.section-dark{background:#2A2320;color:var(--c-invert);position:relative;overflow:hidden}
.section-head{max-width:760px;margin-bottom:44px}
.section-title{font-size:clamp(24px,2.6vw,36px);line-height:1.3;font-weight:700;margin:0}
.section-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:6px 14px;border-radius:var(--r-p);
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  margin-bottom:16px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-p);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(214,69,47,.24)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;box-shadow:var(--sh-f);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--c-secondary);color:var(--c-secondary)}
.btn-outline:hover{background:var(--c-secondary-soft);color:var(--c-secondary);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(253,249,245,.5);color:var(--c-invert)}
.btn-ghost:hover{background:rgba(253,249,245,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn:disabled{opacity:.45;pointer-events:none}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,a:focus-visible,
button:focus-visible,input:focus-visible,select:focus-visible{
  outline:3px solid rgba(214,69,47,.35);outline-offset:2px;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;line-height:1;letter-spacing:.02em;
  padding:7px 12px;border-radius:var(--r-p);
  background:var(--c-secondary-soft);color:var(--c-secondary);
  transition:background .2s ease,color .2s ease;
}
.tag:hover{background:#CDE3DD;color:var(--c-secondary)}
.tag-warm{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.tag-warm:hover{background:#F1CEC4;color:var(--c-primary-dark)}
.tag-line{background:transparent;border:1px solid var(--c-line-2);color:var(--c-ink-2)}
.meta{font-size:13px;color:var(--c-ink-3);letter-spacing:.01em}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--c-secondary);border-bottom:1px solid transparent;transition:.22s;
}
.text-link:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);transform:translateX(2px)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,247,242,.94);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(120,60,40,.10)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform .32s ease,background .32s ease;
}
.brand:hover .brand-mark{transform:scale(1.08) rotate(-8deg);background:#F2D2C8}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:10px;font-weight:500;letter-spacing:.16em;color:var(--c-ink-3);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 12px;border-radius:var(--r-s);
  font-size:14.5px;font-weight:500;color:var(--c-ink-2);white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--c-ink);background:#F4EAE0}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:50%;
  color:var(--c-ink-2);transition:background .2s ease,color .2s ease;
}
.icon-btn:hover{background:#F4EAE0;color:var(--c-primary)}
.menu-btn{display:none;width:44px;height:44px;position:relative;border-radius:var(--r-s)}
.menu-btn span{
  position:absolute;left:11px;width:22px;height:2px;border-radius:2px;
  background:var(--c-ink);transition:transform .28s ease,opacity .2s ease,top .28s ease;
}
.menu-btn span:nth-child(1){top:15px}
.menu-btn span:nth-child(2){top:21px}
.menu-btn span:nth-child(3){top:27px}
.menu-btn.is-open span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-btn.is-open span:nth-child(2){opacity:0}
.menu-btn.is-open span:nth-child(3){top:21px;transform:rotate(-45deg)}
.search-bar{display:none;border-top:1px solid var(--c-line);background:#fff}
.search-bar.is-open{display:block}
.search-inner{display:flex;gap:12px;padding:14px 24px;align-items:center}
.search-inner input{
  flex:1;height:48px;padding:0 16px;border:1px solid var(--c-line-2);
  border-radius:var(--r-s);font-size:15px;background:#fff;color:var(--c-ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-inner input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(214,69,47,.14)}

/* 移动端抽屉 */
.mobile-mask{
  position:fixed;inset:0;background:rgba(42,35,32,.42);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.mobile-mask.is-open{opacity:1;visibility:visible}
.mobile-menu{
  position:fixed;top:0;left:0;bottom:0;width:min(320px,86vw);z-index:100;
  background:var(--c-bg);display:flex;flex-direction:column;gap:18px;
  padding:20px;transform:translateX(-102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;box-shadow:var(--sh-f);
}
.mobile-menu.is-open{transform:translateX(0)}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between}
.mobile-title{font-size:16px;font-weight:700}
.mobile-search{display:flex;gap:8px}
.mobile-search input{
  flex:1;height:44px;padding:0 14px;border:1px solid var(--c-line-2);
  border-radius:var(--r-s);font-size:14px;background:#fff;
}
.mobile-nav{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:15px;font-weight:500;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mobile-nav a i{color:var(--c-ink-3);font-style:normal;font-size:14px}
.mobile-nav a:hover{color:var(--c-primary)}

/* ============ 文章头部 ============ */
.article-hero{
  background:linear-gradient(180deg,#F7F0E8 0%,var(--c-bg) 78%);
  padding:36px 0 8px;
  border-bottom:1px solid var(--c-line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3)}
.crumbs a{color:var(--c-ink-2)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span.sep{color:var(--c-line-2)}
.article-head{max-width:820px;padding:26px 0 44px}
.article-head h1{
  font-size:clamp(26px,3.4vw,44px);
  line-height:1.28;font-weight:700;margin:16px 0 18px;letter-spacing:-.01em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:0 14px;
  font-size:14px;color:var(--c-ink-2);
}
.article-meta .divider{width:1px;height:13px;background:var(--c-line-2);display:inline-block}
.article-meta strong{color:var(--c-ink);font-weight:600}
.article-lead{
  margin-top:20px;font-size:16.5px;line-height:1.9;color:var(--c-ink-2);
  padding-left:18px;border-left:3px solid var(--c-primary-soft);
}

/* ============ 正文 ============ */
.article-layout{padding:56px 0 72px;background:var(--c-surface)}
.article-body{max-width:760px;margin:0 auto}
.cover-figure{margin:0 0 40px}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-l);box-shadow:var(--sh-s);
}
.cover-figure figcaption{
  margin-top:12px;font-size:13px;color:var(--c-ink-3);text-align:center;
}
.prose{font-size:16px;line-height:1.9;color:var(--c-ink)}
.prose h2{
  position:relative;font-size:22px;font-weight:600;line-height:1.45;
  margin:44px 0 16px;padding-left:14px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.prose h3{font-size:19px;font-weight:600;line-height:1.5;margin:30px 0 12px}
.prose p{margin:0 0 20px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:1.4em}
.prose li{margin-bottom:8px}
.prose ul li::marker{color:var(--c-primary)}
.prose ol li::marker{color:var(--c-primary);font-weight:600}
.prose blockquote{
  margin:26px 0;padding:16px 20px;background:var(--c-bg-alt);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-s) var(--r-s) 0;color:var(--c-ink-2);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--c-secondary);border-bottom:1px dashed currentColor}
.prose a:hover{color:var(--c-primary)}
.prose img{border-radius:var(--r-l);margin:26px 0;max-width:100%;height:auto}
.prose figure{margin:26px 0}
.prose figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px}
.prose hr{border:0;height:1px;background:var(--c-line);margin:36px 0}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.prose th,.prose td{border-bottom:1px solid var(--c-line);padding:10px 12px;text-align:left}
.prose th{background:var(--c-bg-alt);font-weight:600}
.empty-state{
  max-width:760px;margin:0 auto;text-align:center;padding:60px 24px;
  border:1px dashed var(--c-line-2);border-radius:var(--r-l);background:var(--c-bg);
}
.empty-state i{font-size:30px;color:var(--c-primary);margin-bottom:16px;display:block}
.empty-state h2{font-size:20px;margin:0 0 10px;font-weight:600}
.empty-state p{color:var(--c-ink-2);margin-bottom:22px}

/* 标签区 */
.article-tags{
  max-width:760px;margin:44px auto 0;padding-top:28px;border-top:1px solid var(--c-line);
}
.article-tags h2{
  font-size:15px;font-weight:600;color:var(--c-ink-2);margin:0 0 14px;
  display:flex;align-items:center;gap:8px;
}
.article-tags h2::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* 作者卡 */
.author-card{
  max-width:760px;margin:36px auto 0;display:flex;align-items:flex-start;gap:18px;
  padding:24px;border:1px solid var(--c-line);border-radius:var(--r-m);
  background:var(--c-bg);transition:box-shadow .22s ease,transform .22s ease;
}
.author-card:hover{box-shadow:var(--sh-s);transform:translateY(-3px)}
.author-avatar{
  width:64px;height:64px;flex:none;border-radius:50%;overflow:hidden;
  background:var(--c-primary-soft);display:grid;place-items:center;color:var(--c-primary);
}
.author-avatar img{width:100%;height:100%;object-fit:cover}
.author-info h3{font-size:17px;font-weight:700;margin:0 0 6px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.author-info p{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin:0}
.badge-role{
  font-size:11px;font-weight:600;letter-spacing:.02em;padding:4px 9px;border-radius:var(--r-p);
  background:var(--c-secondary-soft);color:var(--c-secondary);
}

/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-m);overflow:hidden;
  box-shadow:var(--sh-s);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.related-card:hover{box-shadow:var(--sh-f);transform:translateY(-3px);border-color:var(--c-primary-soft)}
.related-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-thumb img{transform:scale(1.04)}
.related-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-body h3{
  font-size:16.5px;line-height:1.5;font-weight:600;margin:0;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-body h3 a{color:inherit}
.related-body h3 a:hover{color:var(--c-primary)}
.related-body .meta{margin-top:auto}

/* 上一篇/下一篇 */
.pager-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:820px;margin:0 auto}
.pager-card{
  padding:20px 22px;border:1px solid var(--c-line);border-radius:var(--r-m);
  background:var(--c-bg);transition:border-color .2s ease,background .2s ease;
}
.pager-card:hover{border-color:var(--c-primary-soft);background:#F8F1E9}
.pager-card .pager-dir{font-size:12px;color:var(--c-ink-3);letter-spacing:.04em;display:block;margin-bottom:8px}
.pager-card .pager-title{
  font-size:15.5px;font-weight:600;color:var(--c-ink);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.pager-card:hover .pager-title{color:var(--c-primary-dark)}
.pager-card.next{text-align:right}
.pager-back{display:flex;justify-content:center;margin-top:28px}

/* 评论占位 */
.comment-card{
  max-width:820px;margin:0 auto;padding:28px;border:1px solid var(--c-line);
  border-radius:var(--r-l);background:var(--c-surface);box-shadow:var(--sh-s);
}
.comment-card h2{font-size:20px;font-weight:700;margin:0 0 6px}
.comment-card .comment-sub{font-size:14px;color:var(--c-ink-2);margin-bottom:20px}
.comment-card textarea{
  width:100%;min-height:104px;padding:14px 16px;border:1px solid var(--c-line-2);
  border-radius:var(--r-s);font-size:15px;line-height:1.8;resize:vertical;background:#fff;
  color:var(--c-ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.comment-card textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(214,69,47,.14)}
.comment-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;margin-top:16px;
}
.comment-foot .rule{font-size:13px;color:var(--c-ink-3)}

/* ============ 页脚 ============ */
.site-footer{background:#2A2320;color:var(--c-invert);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.site-footer .brand{color:var(--c-invert)}
.site-footer .brand:hover{color:var(--c-invert)}
.site-footer .brand-mark{background:rgba(246,222,215,.16);color:#F6DED7}
.site-footer .brand-sub{color:rgba(253,249,245,.5)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(253,249,245,.66);margin:18px 0 0;max-width:320px}
.footer-title{font-size:15px;font-weight:600;margin:0 0 18px;color:var(--c-invert)}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(253,249,245,.66)}
.footer-links a:hover{color:#F6DED7}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(253,249,245,.66);margin:0 0 16px}
.subscribe-form{display:flex;gap:10px}
.subscribe-form input{
  flex:1;min-width:0;height:46px;padding:0 14px;border-radius:var(--r-s);
  border:1px solid rgba(253,249,245,.22);background:rgba(253,249,245,.06);
  color:var(--c-invert);font-size:14px;
}
.subscribe-form input::placeholder{color:rgba(253,249,245,.4)}
.subscribe-form input:focus{outline:none;border-color:#F6DED7;box-shadow:0 0 0 3px rgba(246,222,215,.18)}
.footer-bottom{
  margin-top:56px;padding:22px 0 28px;border-top:1px solid rgba(253,249,245,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(253,249,245,.45);
}
.footer-acc-toggle{display:none}

@media screen and (max-width:1024px){
  :root{--pad-y:64px}
  .main-nav{display:none}
  .menu-btn{display:block}
  .header-actions .btn-sm{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:640px){
  :root{--pad-y:48px}
  .container{padding:0 18px}
  .header-inner{height:64px}
  .brand-text{font-size:15px}
  .brand-sub{font-size:9px;letter-spacing:.12em}
  .brand-mark{width:32px;height:32px}
  .article-hero{padding-top:24px}
  .article-head{padding:20px 0 32px}
  .article-head h1{font-size:26px}
  .article-meta{font-size:13px;gap:0 10px}
  .article-lead{font-size:15px;padding-left:14px}
  .article-layout{padding:36px 0 48px}
  .prose h2{font-size:20px;margin-top:34px}
  .prose h3{font-size:17.5px}
  .related-grid{grid-template-columns:1fr}
  .pager-grid{grid-template-columns:1fr}
  .pager-card.next{text-align:left}
  .author-card{flex-direction:column;gap:14px;padding:20px}
  .comment-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col-block{border-bottom:1px solid rgba(253,249,245,.12);padding:16px 0}
  .footer-title{margin:0;display:flex;align-items:center;justify-content:space-between;cursor:pointer}
  .footer-title::after{content:"+";font-weight:400;font-size:18px;color:rgba(253,249,245,.5)}
  .footer-col-block.is-open .footer-title::after{content:"−"}
  .footer-links,.footer-sub p,.subscribe-form{display:none;margin-top:14px}
  .footer-col-block.is-open .footer-links,
  .footer-col-block.is-open .footer-sub p,
  .footer-col-block.is-open .subscribe-form{display:flex}
  .footer-col-block.is-open .footer-sub p{display:block}
  .footer-brand{border-bottom:1px solid rgba(253,249,245,.12);padding-bottom:20px;margin-bottom:6px}
  .footer-desc{max-width:none}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:32px}
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --c-primary:#D6452F;
  --c-primary-dark:#A8311F;
  --c-primary-soft:#F6DED7;
  --c-secondary:#2E7D74;
  --c-secondary-soft:#DCEBE7;
  --c-bg:#FBF7F2;
  --c-bg-alt:#F4EDE4;
  --c-surface:#FFFFFF;
  --c-ink:#2A2320;
  --c-ink-2:#6B5F58;
  --c-ink-3:#9A8D85;
  --c-invert:#FDF9F5;
  --c-line:#EFE4DA;
  --c-line-2:#E4D8CE;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-p:999px;
  --sh-s:0 6px 24px rgba(120,60,40,.08);
  --sh-f:0 14px 40px rgba(120,60,40,.14);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --container:1200px;
  --pad-y:96px;
}
/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-secondary);text-decoration:none;transition:color .22s ease}
a:hover,a:focus{color:var(--c-primary)}
button{
  font-family:inherit;background:none;border:0;padding:0;margin:0;
  color:inherit;cursor:pointer;font-size:inherit;
}
input,select,textarea{font-family:inherit;font-size:15px}
/* ================= 容器与板块 ================= */
.container{
  width:100%;max-width:var(--container);
  margin:0 auto;padding:0 24px;
}
.section{padding:var(--pad-y) 0;background:var(--c-bg)}
.section-alt{background:var(--c-bg-alt)}
.section-white{background:var(--c-surface)}
.section-dark{background:#2A2320;color:var(--c-invert);position:relative;overflow:hidden}
.section-dark::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:5px 5px;opacity:.5;pointer-events:none;
}
.section-dark > .container{position:relative;z-index:2}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.row-head{
  max-width:none;display:flex;align-items:flex-end;
  justify-content:space-between;gap:24px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:6px 14px;border-radius:var(--r-p);
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  margin-bottom:16px;
}
.section-title{
  font-size:clamp(24px,2.6vw,36px);line-height:1.3;
  font-weight:700;letter-spacing:.01em;
}
.section-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:720px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-secondary);
  border-bottom:1px solid transparent;transition:.22s ease;
}
.text-link:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);transform:translateX(2px)}
/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-p);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(214,69,47,.24)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;box-shadow:var(--sh-f);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--c-secondary);color:var(--c-secondary)}
.btn-outline:hover{background:var(--c-secondary-soft);color:var(--c-secondary);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 32px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn:disabled{opacity:.45;pointer-events:none}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,.faq-q:focus-visible,
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(214,69,47,.35);outline-offset:2px;
}
/* ================= 标签与徽章 ================= */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;line-height:1;letter-spacing:.02em;
  padding:7px 12px;border-radius:var(--r-p);
  background:var(--c-secondary-soft);color:var(--c-secondary);
}
.tag-soft{background:#F6F1EA;color:var(--c-ink-2)}
.tag-warm{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.tag-line{background:transparent;border:1px solid var(--c-line-2);color:var(--c-ink-2)}
.meta{font-size:13px;color:var(--c-ink-3);letter-spacing:.01em}
/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,247,242,.94);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(120,60,40,.10)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform .32s ease,background .32s ease;
}
.brand:hover .brand-mark{transform:scale(1.08) rotate(-8deg);background:#F2D2C8}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:10px;font-weight:500;letter-spacing:.2em;color:var(--c-ink-3);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 12px;border-radius:var(--r-s);
  font-size:15px;font-weight:500;color:var(--c-ink-2);white-space:nowrap;
  transition:color .22s ease,background .22s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--c-ink);background:#F6F1EA}
.nav-link.is-active{color:var(--c-primary-dark);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:50%;
  color:var(--c-ink-2);transition:background .22s ease,color .22s ease;
}
.icon-btn:hover{background:#F2E9E0;color:var(--c-primary)}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-s);
  position:relative;align-items:center;justify-content:center;
}
.menu-btn span{
  position:absolute;left:11px;width:22px;height:2px;border-radius:2px;
  background:var(--c-ink);transition:transform .25s ease,opacity .2s ease;
}
.menu-btn span:nth-child(1){top:15px}
.menu-btn span:nth-child(2){top:21px}
.menu-btn span:nth-child(3){top:27px}
.menu-btn.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-btn.is-open span:nth-child(2){opacity:0}
.menu-btn.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.search-bar{max-height:0;overflow:hidden;transition:max-height .3s ease;border-top:1px solid transparent}
.search-bar.is-open{max-height:120px;border-top-color:var(--c-line)}
.search-inner{display:flex;gap:12px;padding:14px 0;align-items:center}
.search-inner input{
  flex:1;height:48px;padding:0 18px;border-radius:var(--r-p);
  border:1px solid var(--c-line-2);background:var(--c-surface);color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.search-inner input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(214,69,47,.16);
}
/* ================= 移动抽屉 ================= */
.drawer-mask{
  position:fixed;inset:0;background:rgba(42,35,32,.4);
  opacity:0;visibility:hidden;transition:.25s ease;z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;width:min(320px,86vw);height:100%;
  background:var(--c-bg);z-index:120;padding:24px;
  transform:translateX(-102%);transition:transform .28s ease;
  overflow-y:auto;box-shadow:var(--sh-f);
}
.mobile-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:13px;letter-spacing:.16em;color:var(--c-ink-3)}
.drawer-close{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:var(--c-ink-2)}
.drawer-close:hover{background:#F2E9E0;color:var(--c-primary)}
.drawer-nav{display:flex;flex-direction:column;margin:8px 0 20px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 4px;font-size:16px;font-weight:500;
  color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--c-primary-dark)}
.drawer-nav a i{font-size:12px;color:var(--c-ink-3)}
.drawer-cta{margin-top:8px}
/* ================= 分类页头部 ================= */
.cat-hero{
  background:var(--c-bg-alt);
  padding:48px 0 56px;
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--c-line);
}
.cat-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;
  border:1px solid rgba(214,69,47,.16);border-radius:50%;
  transform:rotate(-18deg);pointer-events:none;
}
.cat-hero::before{
  content:"";position:absolute;right:30px;top:40px;width:180px;height:60px;
  border:1px solid rgba(46,125,116,.18);border-radius:50%;
  transform:rotate(24deg);pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-ink-3);margin-bottom:18px;position:relative;z-index:2;
}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-line-2)}
.cat-hero h1{
  font-size:clamp(28px,3.4vw,44px);line-height:1.24;font-weight:700;
  letter-spacing:.01em;position:relative;z-index:2;
}
.cat-hero h1 em{font-style:normal;color:var(--c-primary)}
.cat-hero-lead{
  margin-top:16px;font-size:16px;line-height:1.85;color:var(--c-ink-2);
  max-width:640px;position:relative;z-index:2;
}
.cat-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;position:relative;z-index:2}
.cat-hero-figure{
  border-radius:var(--r-l);overflow:hidden;position:relative;
  box-shadow:var(--sh-s);aspect-ratio:3/2;
}
.cat-hero-figure img{width:100%;height:100%;object-fit:cover}
.cat-hero-figure::after{
  content:"";position:absolute;inset:0;background:rgba(42,35,32,.08);
}
.cat-hero-figure figcaption{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-size:12px;color:#FDF9F5;letter-spacing:.02em;
  background:rgba(42,35,32,.5);padding:5px 12px;border-radius:var(--r-p);
}
/* ================= 数据小看板 ================= */
.stat-band{background:var(--c-bg-alt);padding:0 0 64px}
.stat-grid{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:22px 8px;
  display:flex;flex-wrap:wrap;
}
.stat-item{
  flex:1 1 0;min-width:140px;padding:8px 20px;
  border-right:1px solid var(--c-line);
}
.stat-item:last-child{border-right:0}
.stat-num{
  font-size:clamp(26px,2.6vw,34px);font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;letter-spacing:.01em;
}
.stat-num small{font-size:14px;font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:var(--c-ink-2);margin-top:6px}
/* ================= 列表卡片主体 ================= */
.list-head-note{font-size:14px;color:var(--c-ink-3);margin-top:6px}
.lead-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-s);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  margin-bottom:24px;
}
.lead-card:hover{box-shadow:var(--sh-f);transform:translateY(-3px);border-color:var(--c-primary-soft)}
.lead-card-inner{display:flex;flex-wrap:wrap}
.lead-thumb{flex:1 1 46%;min-width:280px;overflow:hidden;aspect-ratio:16/10}
.lead-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.lead-card:hover .lead-thumb img{transform:scale(1.03)}
.lead-body{flex:1 1 46%;min-width:280px;padding:28px 30px}
.lead-body h3{
  font-size:clamp(19px,1.8vw,23px);line-height:1.45;font-weight:600;
  margin:12px 0 10px;
}
.lead-body h3 a{color:var(--c-ink)}
.lead-body h3 a:hover{color:var(--c-primary)}
.lead-body p{font-size:15px;line-height:1.8;color:var(--c-ink-2)}
.card-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--c-ink-3);
}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line-2)}
.card-meta i{color:var(--c-ink-3);font-size:12px}
.post-grid{display:flex;flex-wrap:wrap;margin:0 -12px}
.post-grid > .cell{width:50%;padding:0 12px;margin-bottom:24px}
.post-card{
  height:100%;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);overflow:hidden;box-shadow:var(--sh-s);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.post-card:hover{box-shadow:var(--sh-f);transform:translateY(-3px);border-color:var(--c-primary-soft)}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-body h3{
  font-size:17px;line-height:1.5;font-weight:600;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body h3 a{color:var(--c-ink)}
.post-body h3 a:hover{color:var(--c-primary)}
.post-body p{
  font-size:14px;line-height:1.78;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body .card-meta{margin-top:auto;padding-top:16px}
.list-more{display:flex;justify-content:center;margin-top:16px}
/* ================= 标签云 ================= */
.cloud-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:32px;
}
.cloud-tags{display:flex;flex-wrap:wrap;gap:10px 12px;margin-top:8px}
.cloud-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:var(--r-p);
  border:1px solid var(--c-line-2);background:#FFFDFB;
  font-size:13px;color:var(--c-ink-2);cursor:default;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.cloud-tag:nth-child(3n){font-size:15px}
.cloud-tag:nth-child(4n){font-size:14px}
.cloud-tag:hover{background:var(--c-secondary-soft);color:var(--c-secondary);border-color:var(--c-secondary);transform:translateY(-2px)}
.cloud-tag i{font-size:11px;color:var(--c-line-2)}
.cloud-tag:hover i{color:var(--c-secondary)}
/* ================= 资讯列表（CMS） ================= */
.news-grid{display:flex;flex-wrap:wrap;margin:0 -12px}
.news-grid > .cell{width:50%;padding:0 12px;margin-bottom:20px}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:22px;height:100%;
  box-shadow:var(--sh-s);transition:box-shadow .22s ease,transform .22s ease;
}
.news-card:hover{box-shadow:var(--sh-f);transform:translateY(-3px)}
.news-card h3{
  font-size:17px;line-height:1.5;font-weight:600;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card h3 a{color:var(--c-ink)}
.news-card h3 a:hover{color:var(--c-primary)}
.news-card p{
  font-size:14px;line-height:1.78;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--c-ink-3)}
.empty-state{
  text-align:center;padding:56px 24px;background:var(--c-surface);
  border:1px dashed var(--c-line-2);border-radius:var(--r-l);
}
.empty-state i{font-size:26px;color:var(--c-ink-3)}
.empty-state p{margin-top:12px;font-size:15px;color:var(--c-ink-2)}
.empty-state .btn{margin-top:18px}
/* ================= FAQ ================= */
.faq-list{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 24px;text-align:left;font-size:16px;font-weight:600;
  color:var(--c-ink);transition:background .22s ease,color .22s ease;
}
.faq-q:hover{background:#FCF8F3;color:var(--c-primary-dark)}
.faq-num{
  flex:none;font-size:13px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;width:24px;
}
.faq-text{flex:1}
.faq-icon{
  flex:none;width:24px;height:24px;position:relative;border-radius:50%;
  border:1px solid var(--c-line-2);transition:transform .28s ease,border-color .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.6px}
.faq-icon::after{width:1.6px;height:10px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--c-primary-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a-inner{padding:0 24px 20px 62px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}
/* ================= 频道入口 ================= */
.channel-grid{display:flex;flex-wrap:wrap;margin:0 -10px}
.channel-grid > .cell{width:25%;padding:0 10px;margin-bottom:20px}
.channel-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:18px 20px;border-radius:var(--r-m);
  background:var(--c-surface);border:1px solid var(--c-line);
  box-shadow:var(--sh-s);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-f);border-color:var(--c-primary-soft)}
.channel-name{font-size:15px;font-weight:600;color:var(--c-ink)}
.channel-count{font-size:12px;color:var(--c-ink-3);margin-top:4px;font-variant-numeric:tabular-nums}
.channel-card i{font-size:12px;color:var(--c-primary)}
.channel-card.is-current{border-color:var(--c-primary);background:#FFF9F6}
.channel-card.is-current .channel-name{color:var(--c-primary-dark)}
/* ================= 转化表单 ================= */
.join-block{
  background:var(--c-secondary-soft);border-radius:var(--r-l);
  padding:44px;position:relative;overflow:hidden;
}
.join-block::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:260px;height:260px;
  border:1px solid rgba(46,125,116,.25);border-radius:50%;
}
.join-inner{display:flex;flex-wrap:wrap;gap:32px;position:relative;z-index:2}
.join-copy{flex:1 1 46%;min-width:260px}
.join-copy h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:#20423C}
.join-copy p{margin-top:12px;font-size:15px;line-height:1.85;color:#3A5C55}
.join-points{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.join-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#20423C}
.join-points i{color:var(--c-secondary);margin-top:4px;font-size:13px}
.join-form-card{
  flex:0 1 380px;min-width:280px;background:var(--c-surface);
  border-radius:var(--r-l);padding:26px;box-shadow:var(--sh-f);
  margin-bottom:-24px;position:relative;z-index:3;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-s);
  border:1px solid var(--c-line-2);background:var(--c-surface);color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(214,69,47,.16);
}
.field-agree{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--c-ink-2);margin-bottom:18px}
.field-agree input{width:18px;height:18px;margin-top:2px;accent-color:var(--c-primary);flex:none}
.form-note{font-size:12px;color:var(--c-ink-3);margin-top:12px;text-align:center}
/* ================= 页脚 ================= */
.site-footer{background:#2A2320;color:var(--c-invert);padding-top:72px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{color:var(--c-invert)}
.footer-brand .brand-mark{background:rgba(246,222,215,.14);color:#F3B39F}
.footer-brand .brand-sub{color:rgba(253,249,245,.5)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(253,249,245,.68);max-width:300px}
.footer-title{font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--c-invert);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(253,249,245,.7)}
.footer-links a:hover{color:#F3B39F}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(253,249,245,.68);margin-bottom:14px}
.subscribe-form{display:flex;gap:8px}
.subscribe-form input{
  flex:1;height:44px;padding:0 14px;border-radius:var(--r-s);
  border:1px solid rgba(253,249,245,.24);background:rgba(253,249,245,.08);
  color:var(--c-invert);
}
.subscribe-form input::placeholder{color:rgba(253,249,245,.45)}
.subscribe-form input:focus{outline:none;border-color:#F3B39F;box-shadow:0 0 0 3px rgba(243,179,159,.18)}
.footer-bottom{
  border-top:1px solid rgba(253,249,245,.12);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:rgba(253,249,245,.5);
}
/* ================= 响应式 ================= */
@media (max-width:1024px){
  :root{--pad-y:64px}
  .main-nav{display:none}
  .menu-btn{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .channel-grid > .cell{width:50%}
  .lead-thumb,.lead-body{flex:1 1 100%}
  .lead-thumb{aspect-ratio:16/9}
}
@media (max-width:768px){
  :root{--pad-y:56px}
  .container{padding:0 18px}
  .cat-hero{padding:36px 0 44px}
  .stat-item{flex:1 1 48%;border-right:0;border-bottom:1px solid var(--c-line);padding:14px 16px}
  .stat-item:nth-last-child(-n+2){border-bottom:0}
  .post-grid > .cell{width:100%}
  .news-grid > .cell{width:100%}
  .join-block{padding:28px 20px}
  .join-form-card{margin-bottom:0;flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .section-head.row-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:640px){
  .cat-hero h1{font-size:26px}
  .lead-body{padding:20px}
  .post-card{flex-direction:row;align-items:stretch;padding:0}
  .post-thumb{width:88px;flex:none;aspect-ratio:1/1;border-radius:0}
  .post-body{padding:14px}
  .post-body p{-webkit-line-clamp:1}
  .faq-q{padding:16px 16px;font-size:15px;gap:10px}
  .faq-a-inner{padding:0 16px 16px 50px;font-size:14px}
  .cloud-wrap,.news-card{padding:20px}
  .channel-grid > .cell{width:100%}
  .search-inner{flex-wrap:wrap}
  .search-inner .btn{width:100%}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .brand-sub{font-size:9px;letter-spacing:.14em}
  .stat-grid{padding:12px 4px}
  .stat-num{font-size:24px}
  .btn-lg{height:50px;padding:0 24px;font-size:15px}
}