/* roulang page: index */
:root{
  --brand:#E2542C;--brand-2:#C9336E;--purple:#6C3BA6;--mint:#0FA37F;--brick:#C0392B;
  --grad:linear-gradient(118deg,#E2542C 0%,#C9336E 52%,#6C3BA6 100%);
  --bg:#FBF8F5;--bg-alt:#F4EEE9;--card:#FFFFFF;
  --ink:#1C1714;--ink-2:#5B544E;--ink-3:#8C837B;
  --line:rgba(28,23,20,.06);--line-2:rgba(28,23,20,.12);
  --r-nav:20px;--r-card:24px;--r-lg:28px;--r-img:18px;
  --sh-1:0 2px 10px -4px rgba(28,23,20,.10);
  --sh-2:0 18px 40px -18px rgba(226,84,44,.28);
  --sh-3:0 12px 32px -14px rgba(28,23,20,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.75}
h1,h2,h3,p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}
.num{font-variant-numeric:tabular-nums}

/* 导航 */
.site-head{position:sticky;top:0;z-index:50;padding:16px 0 0}
.nav{position:relative;display:flex;align-items:center;gap:10px;background:#fff;border-radius:var(--r-nav);box-shadow:var(--sh-3);padding:10px 16px;transition:padding .2s var(--ease),box-shadow .2s var(--ease)}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem;flex:0 0 auto}
.logo-mark{width:44px;height:44px;border-radius:14px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.05rem}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;margin-right:8px}
.nav-links a{display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:999px;font-size:.9375rem;color:var(--ink-2);transition:color .2s,background .2s}
.nav-links a:hover{color:var(--brand);background:#FBF3EF}
.nav-cta{flex:0 0 auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 26px;border:1px solid transparent;border-radius:999px;font-weight:700;font-size:.9375rem;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),border-color .2s}
.btn-main{background:var(--grad);color:#fff}
.btn-main:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-main:active{transform:scale(.98)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:.875rem}
.mnav{display:none;margin-left:auto}
.mnav summary{list-style:none;width:44px;height:44px;border-radius:12px;background:#FBF3EF;display:grid;place-items:center;cursor:pointer}
.mnav summary::-webkit-details-marker{display:none}
.mnav summary::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--ink);box-shadow:0 6px 0 var(--ink),0 -6px 0 var(--ink)}
.mnav-panel{position:absolute;right:0;top:calc(100% + 8px);width:220px;background:#fff;border-radius:var(--r-nav);box-shadow:var(--sh-3);padding:8px;border:1px solid var(--line)}
.mnav-panel a{display:flex;align-items:center;height:44px;padding:0 14px;border-radius:12px;font-size:.9375rem;color:var(--ink-2);border-bottom:1px solid var(--line)}
.mnav-panel a:last-child{border-bottom:0}
.mnav-panel a:hover{color:var(--brand);background:#FBF3EF}

/* 区块 */
.sec{padding:96px 0}
.sec.alt{background:var(--bg-alt)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;letter-spacing:-.01em;line-height:1.25}
.sec-head .sub{color:var(--ink-2);font-size:.9375rem;margin-top:8px;max-width:660px}
.more{font-size:.9375rem;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.more:hover{gap:10px}

/* Hero */
.hero{padding:88px 0 96px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:#FBF3EF;color:var(--brand);font-size:.8125rem;font-weight:600;letter-spacing:.04em}
.hero h1{margin-top:20px;font-size:clamp(2.1rem,4.2vw,3.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.12}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:18px;font-size:1.125rem;color:var(--ink-2);font-weight:600}
.hero-desc{margin-top:12px;color:var(--ink-3);max-width:580px;font-size:.9375rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt);box-shadow:var(--sh-1)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-badges{position:absolute;left:16px;bottom:16px;display:flex;flex-wrap:wrap;gap:8px}
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:#fff;box-shadow:var(--sh-1);font-size:.75rem;font-weight:600;letter-spacing:.04em;color:var(--ink-2)}
.badge b{color:var(--brand);font-variant-numeric:tabular-nums}
.badge.mint b{color:var(--mint)}

/* 通用卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box}

/* KPI */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.kpi{padding:24px}
.kpi .k-val{font-size:1.9rem;font-weight:800;font-variant-numeric:tabular-nums;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.kpi .k-unit{font-size:.8125rem;color:var(--ink-3);margin-left:4px;font-weight:600}
.kpi .k-name{margin-top:10px;font-size:.9375rem;font-weight:700}
.kpi .k-desc{margin-top:4px;font-size:.8125rem;color:var(--ink-3);line-height:1.65}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.pain{padding:24px}
.ic{width:40px;height:40px;border-radius:12px;background:#FBF0EA;color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:1rem}
.pain h3{margin-top:16px;font-size:1.0625rem;font-weight:700}
.pain p{margin-top:6px;font-size:.875rem;color:var(--ink-3);line-height:1.65}

/* 解决方案 */
.sol-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.sol-list{margin-top:24px;display:grid;gap:18px}
.sol-list li{position:relative;padding-left:18px;font-size:.9375rem;color:var(--ink-2)}
.sol-list li::before{content:"";position:absolute;left:0;top:7px;width:3px;height:18px;border-radius:3px;background:var(--grad)}
.sol-list strong{color:var(--ink);font-weight:700}
.sol-link{display:inline-flex;align-items:center;gap:6px;margin-top:28px;font-weight:600;color:var(--brand);font-size:.9375rem}
.sol-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;background:var(--bg-alt);box-shadow:var(--sh-1)}
.sol-media img{width:100%;height:100%;object-fit:cover}
.sol-media .badge{position:absolute;right:16px;bottom:16px}

/* 海报墙 */
.posters{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.poster{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:12px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s}
.poster:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box}
.poster-media{position:relative;aspect-ratio:2/3;border-radius:var(--r-img);overflow:hidden;background:var(--bg-alt)}
.poster-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.poster:hover .poster-media img{transform:scale(1.03)}
.score{position:absolute;top:10px;right:10px;display:inline-flex;align-items:center;gap:3px;height:24px;padding:0 10px;border-radius:999px;background:#fff;box-shadow:var(--sh-1);font-size:.75rem;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.poster-title{margin-top:12px;font-size:1rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.st{display:inline-flex;align-items:center;height:22px;padding:0 10px;margin-top:8px;border-radius:999px;font-size:.6875rem;font-weight:600;letter-spacing:.04em;background:#fff;border:1px solid var(--line-2);color:var(--ink-2);white-space:nowrap}
.st-bd{border-color:rgba(108,59,166,.4);color:var(--purple)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step{position:relative;padding-right:32px}
.step::after{content:"";position:absolute;right:8px;top:26px;width:calc(100% - 60px);border-top:1px dashed var(--line-2);transform:translateX(0)}
.step:last-child::after{display:none}
.step-no{font-size:2.5rem;font-weight:800;font-variant-numeric:tabular-nums;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{margin-top:14px;font-size:1.0625rem;font-weight:700}
.step p{margin-top:6px;font-size:.875rem;color:var(--ink-3);line-height:1.65;max-width:220px}

/* 热门推荐 */
.hot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hot-card{display:grid;grid-template-columns:96px 1fr;gap:16px;padding:16px}
.hot-media{aspect-ratio:3/4;border-radius:14px;overflow:hidden;background:var(--bg-alt)}
.hot-media img{width:100%;height:100%;object-fit:cover}
.hot-body{display:flex;flex-direction:column;min-width:0}
.hot-body h3{font-size:1rem;font-weight:700}
.hot-body p{margin-top:6px;font-size:.8125rem;color:var(--ink-3);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:.6875rem;font-weight:600;letter-spacing:.04em;background:#F3EDF8;color:var(--purple)}
.rate{margin-left:auto;font-weight:800;color:var(--brand);font-size:.9375rem;font-variant-numeric:tabular-nums}

/* 分类频道 */
.chan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.chan{padding:24px;display:flex;flex-direction:column}
.chan h3{font-size:1.0625rem;font-weight:700}
.chan p{margin-top:8px;font-size:.875rem;color:var(--ink-3);line-height:1.65;flex:1}
.chan-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:.875rem;font-weight:600;color:var(--brand)}
.chan-link span{transition:transform .2s var(--ease)}
.chan:hover .chan-link span{transform:translateX(2px)}

/* 榜单 */
.rank-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.rank-item{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.rank-no{flex:0 0 30px;width:30px;height:30px;display:grid;place-items:center;border-radius:9px;font-size:.875rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--ink-3);background:#F4EEE9}
.rank-no.top{background:var(--grad);color:#fff}
.rank-name{flex:1;min-width:0;font-size:.9375rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.heat{flex:0 0 72px;width:72px;height:6px;border-radius:99px;background:#EFE7E1;overflow:hidden}
.heat i{display:block;height:100%;border-radius:99px;background:var(--grad)}
.bar-90{width:90%}.bar-82{width:82%}.bar-74{width:74%}.bar-66{width:66%}.bar-58{width:58%}
.rank-score{flex:0 0 34px;text-align:right;font-size:.875rem;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}

/* 评价 */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice{padding:24px}
.voice-top{display:flex;align-items:center;gap:12px}
.avatar{width:48px;height:48px;border-radius:999px;overflow:hidden;background:var(--bg-alt);flex:0 0 48px}
.avatar img{width:100%;height:100%;object-fit:cover}
.voice-name{font-size:.9375rem;font-weight:700}
.voice-stars{font-size:.75rem;color:var(--brand);letter-spacing:2px;margin-top:2px}
.voice p{margin-top:14px;font-size:.875rem;color:var(--ink-2);line-height:1.75}

/* 适用人群 */
.aud-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.aud{background:var(--bg-alt);border-radius:var(--r-card);padding:24px;border:1px solid transparent;transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s}
.aud:hover{background:#fff;box-shadow:var(--sh-1);transform:translateY(-3px);border-color:var(--line)}
.aud h3{font-size:1rem;font-weight:700}
.aud p{margin-top:6px;font-size:.875rem;color:var(--ink-3);line-height:1.65}

/* 资讯 */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.news-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.news-thumb{flex:0 0 120px;width:120px;height:90px;border-radius:14px;overflow:hidden;background:var(--bg-alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0}
.news-body h3{font-size:.9375rem;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--brand)}
.news-meta{margin-top:8px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.date{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:#F4EEE9;color:var(--ink-3);font-size:.6875rem;font-weight:600;letter-spacing:.04em;font-variant-numeric:tabular-nums}

/* 数据指标带 */
.metrics-bar{background:var(--bg-alt);border-radius:var(--r-lg);padding:32px;display:grid;grid-template-columns:repeat(6,1fr)}
.metric{padding:0 16px;border-right:1px solid rgba(28,23,20,.08)}
.metric:first-child{padding-left:0}
.metric:last-child{border-right:0;padding-right:0}
.m-name{display:block;font-size:.75rem;color:var(--ink-3);letter-spacing:.04em}
.m-val{display:block;margin-top:6px;font-size:1.4rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--brand)}
.m-val.up{color:var(--mint)}
.m-val.down{color:var(--brick)}

/* 专题 */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic{position:relative;display:block;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt);box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.topic:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.topic img{width:100%;height:100%;object-fit:cover}
.topic-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(28,23,20,0) 34%,rgba(226,84,44,.55) 62%,rgba(108,59,166,.72) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px}
.topic-mask h3{color:#fff;font-size:1.05rem;font-weight:700}
.topic-mask p{color:rgba(255,255,255,.9);font-size:.8125rem;margin-top:6px;line-height:1.6}
.topic-count{position:absolute;top:16px;right:16px;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:#fff;color:var(--ink);font-size:.6875rem;font-weight:700;font-variant-numeric:tabular-nums}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:0 24px;margin-bottom:12px}
.faq summary{height:48px;display:flex;align-items:center;justify-content:space-between;gap:16px;list-style:none;cursor:pointer;font-weight:700;font-size:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.25rem;color:var(--brand);font-weight:700;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq p{padding:0 0 20px;color:var(--ink-2);font-size:.9375rem;max-width:820px}

/* CTA */
.cta-card{background:var(--grad);border-radius:var(--r-lg);padding:56px;color:#fff}
.cta-card h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;color:#fff;letter-spacing:-.01em}
.cta-card p{margin-top:12px;color:rgba(255,255,255,.94);font-size:.9375rem;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn-white{background:#fff;color:var(--ink);border-color:#fff}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(0,0,0,.4)}
.btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.75)}
.btn-line:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}

/* 页脚 */
.site-foot{background:var(--bg-alt);padding:72px 0 32px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem}
.foot-desc{margin-top:14px;font-size:.8125rem;color:var(--ink-3);line-height:1.75;max-width:280px}
.foot-domain{margin-top:12px;font-size:.8125rem;color:var(--ink-2);font-weight:600;letter-spacing:.02em}
.foot-col h3{font-size:.8125rem;font-weight:700;letter-spacing:.06em;color:var(--ink);margin-bottom:14px}
.foot-col a,.foot-col span{display:block;font-size:.8125rem;color:var(--ink-3);line-height:1.65;padding:5px 0}
.foot-col a:hover{color:var(--brand)}
.foot-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(28,23,20,.08);font-size:.75rem;color:var(--ink-3);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media (max-width:1024px){
  .wrap{padding:0 32px}
  .sec{padding:72px 0}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .kpi-grid,.pain-grid{grid-template-columns:repeat(2,1fr)}
  .posters{grid-template-columns:repeat(3,1fr)}
  .hot-grid{grid-template-columns:repeat(2,1fr)}
  .chan-grid{grid-template-columns:repeat(2,1fr)}
  .aud-grid{grid-template-columns:repeat(2,1fr)}
  .voice-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .step:nth-child(2)::after{display:none}
  .metrics-bar{grid-template-columns:repeat(3,1fr);gap:24px 0}
  .metric{border-right:0;padding:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{padding:40px}
}
@media (max-width:768px){
  .wrap{padding:0 24px}
  .sec{padding:72px 0}
  .nav-links,.nav-cta{display:none}
  .mnav{display:block}
  .hero{padding:56px 0 64px}
  .hero-actions .btn{flex:1}
  .news-list{grid-template-columns:1fr;gap:0}
  .rank-wrap{grid-template-columns:1fr;gap:0}
  .rank-wrap ul:first-child li:last-child{border-bottom:1px solid var(--line)}
  .topic-grid{grid-template-columns:1fr}
  .hot-grid{grid-template-columns:1fr}
  .sec-head{margin-bottom:28px}
  .foot-bottom{flex-direction:column}
}
@media (max-width:520px){
  .wrap{padding:0 20px}
  .sec{padding:56px 0}
  .hero{padding:48px 0 56px}
  .hero h1{font-size:2rem}
  .posters{grid-template-columns:repeat(2,1fr);gap:16px}
  .kpi-grid,.pain-grid,.chan-grid,.aud-grid{grid-template-columns:1fr;gap:16px}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 28px 28px;border-left:1px dashed var(--line-2)}
  .step::after{display:none}
  .step-no{font-size:2rem}
  .metrics-bar{grid-template-columns:repeat(2,1fr);gap:20px 0;padding:24px}
  .metric{padding-right:12px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .cta-card{padding:32px 24px}
  .cta-actions .btn{width:100%}
  .news-thumb{flex:0 0 96px;width:96px;height:72px}
  .hero-media .badge{font-size:.6875rem;height:24px;padding:0 9px}
}