/* roulang page: index */
:root{
  --berry:#D6395F;
  --berry-dark:#A32345;
  --caramel:#E8892B;
  --paper:#FFFDFB;
  --pink:#FFF4EE;
  --ink:#241A18;
  --sub:#5B4B45;
  --line:#EFE1DA;
  --r:10px;
  --r-lg:14px;
  --r-sm:6px;
  --shadow:0 1px 2px rgba(36,26,24,.06);
  --w:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.8;letter-spacing:-.005em}
h1,h2,h3,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--berry);outline-offset:2px}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 16px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,251,.96);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
.header-top{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px}
.brand-mark{width:36px;height:36px;border-radius:8px;background:var(--berry);color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;line-height:1}
.brand-name{font-size:18px;font-weight:800;letter-spacing:-.01em}
.search{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden}
.search input{flex:1;min-width:0;border:0;background:transparent;padding:10px 12px;font-size:14px;outline:none;min-height:44px}
.search input::placeholder{color:#A08E87}
.search button{border:0;background:var(--pink);color:var(--berry-dark);font-size:14px;font-weight:600;padding:0 16px;min-height:44px;cursor:pointer;transition:background .18s,color .18s}
.search button:hover{background:var(--berry);color:#fff}
.search-desktop{margin-left:auto;width:100%;max-width:380px}
.nav-toggle{display:none;margin-left:auto;position:relative}
.nav-toggle summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:center;min-width:64px;min-height:44px;border:1px solid var(--line);border-radius:8px;font-size:14px;color:var(--sub);background:#fff}
.nav-toggle summary::-webkit-details-marker{display:none}
.nav-toggle[open] summary{border-color:var(--berry);color:var(--berry)}
.toggle-panel{position:absolute;right:0;top:52px;width:260px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:0 8px 24px rgba(36,26,24,.10);padding:14px;display:flex;flex-direction:column;gap:12px}
.toggle-links{display:flex;flex-direction:column;gap:2px}
.toggle-links a{display:block;padding:10px 8px;border-radius:8px;font-size:14px;color:var(--sub)}
.toggle-links a:hover{background:var(--pink);color:var(--berry-dark)}
.header-nav{border-top:1px solid var(--line)}
.nav-row{display:flex;align-items:center;gap:20px;min-height:48px;overflow-x:auto;scrollbar-width:none}
.nav-row::-webkit-scrollbar{display:none}
.nav-links{display:flex;gap:20px;flex-shrink:0}
.nav-links a{display:block;font-size:14px;color:var(--sub);padding:11px 0;border-bottom:2px solid transparent;white-space:nowrap;transition:color .18s,border-color .18s}
.nav-links a:hover{color:var(--berry);border-color:var(--berry)}
.nav-links a.active{color:var(--berry);border-color:var(--berry);font-weight:600}
.chips{display:flex;gap:8px;margin-left:auto;flex-shrink:0;padding:6px 0}
.chips a{display:block;font-size:13px;padding:4px 12px;border-radius:999px;background:var(--pink);color:var(--sub);white-space:nowrap;transition:color .18s,background .18s}
.chips a:hover{color:#fff;background:var(--berry)}

/* sections */
.section{padding:48px 0}
.section + .section{border-top:1px solid var(--line)}
.section-pink{background:var(--pink)}
.section-head{max-width:740px;margin-bottom:28px}
.section-head h2{font-size:22px;font-weight:800;line-height:1.4;letter-spacing:-.01em}
.section-head p{margin-top:10px;font-size:14px;color:var(--sub)}
.text-link{display:inline-block;margin-top:18px;font-size:14px;font-weight:600;color:var(--berry)}
.text-link:hover{color:var(--berry-dark)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:8px;font-size:15px;font-weight:600;transition:background .18s,color .18s,transform .18s,border-color .18s}
.btn-primary{background:var(--berry);color:#fff}
.btn-primary:hover{background:var(--berry-dark);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--pink)}

/* hero */
.hero{padding:40px 0 0}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--berry-dark);background:var(--pink);border-radius:999px;padding:4px 14px}
.hero h1{margin-top:16px;font-size:30px;line-height:1.3;font-weight:800;letter-spacing:-.02em}
.hero h1 .hl{background:var(--berry);color:#fff;border-radius:8px;padding:0 8px;display:inline-block}
.hero-sub{margin-top:14px;font-size:16px;font-weight:600;color:var(--ink)}
.hero-desc{margin-top:12px;font-size:15px;color:var(--sub);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--pink);box-shadow:var(--shadow)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.member-card{position:absolute;left:14px;right:14px;bottom:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:rgba(255,253,251,.95);border:1px solid var(--line);border-radius:var(--r);padding:10px 12px}
.member-badge{font-size:12px;font-weight:700;color:#fff;background:var(--berry);border-radius:var(--r-sm);padding:2px 10px;white-space:nowrap}
.member-card p{font-size:13px;color:var(--sub)}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:28px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hero-stats li{text-align:center}
.hero-stats strong{display:block;font-size:22px;font-weight:800;color:var(--berry);line-height:1.2}
.hero-stats span{font-size:12px;color:var(--sub)}

/* pain */
.pain-list{display:flex;flex-direction:column}
.pain-item{display:flex;gap:20px;align-items:flex-start;padding:20px 0;border-top:1px solid var(--line)}
.pain-item:last-child{border-bottom:1px solid var(--line)}
.pain-num{flex-shrink:0;min-width:52px;font-size:32px;font-weight:800;color:#E7D6CD;line-height:1.1}
.pain-body h3{font-size:17px;font-weight:700}
.pain-body p{margin-top:6px;font-size:14px;color:var(--sub)}

/* solution */
.sol-grid{display:grid;grid-template-columns:1fr;gap:32px}
.sol-copy h2{font-size:22px;font-weight:800;line-height:1.4}
.sol-copy p{margin-top:14px;font-size:15px;color:var(--sub)}
.sol-grid2{display:grid;grid-template-columns:1fr;gap:18px}
.sol-item{padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow)}
.sol-shape{display:block;width:26px;height:26px;border-radius:var(--r-sm);background:var(--berry);margin-bottom:12px}
.sol-item:nth-child(2) .sol-shape{background:var(--caramel);border-radius:50%}
.sol-item:nth-child(3) .sol-shape{background:transparent;border:2px solid var(--berry);border-radius:var(--r-sm)}
.sol-item:nth-child(4) .sol-shape{background:var(--pink);border:1px solid var(--line)}
.sol-item h3{font-size:16px;font-weight:700}
.sol-item p{margin-top:6px;font-size:14px;color:var(--sub)}

/* poster grid */
.poster-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.poster-card a{display:block}
.poster-wrap{position:relative;aspect-ratio:2/3;border-radius:var(--r);overflow:hidden;background:var(--pink)}
.poster-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.poster-card a:hover img{transform:scale(1.04)}
.badge{position:absolute;top:8px;right:8px;font-size:11px;line-height:1.5;padding:1px 7px;border-radius:var(--r-sm);background:rgba(255,253,251,.94);border:1px solid var(--line);color:var(--ink);white-space:nowrap}
.badge-live{background:var(--berry);border-color:var(--berry);color:#fff}
.card-title{margin-top:10px;font-size:14px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:8px;margin-top:4px;font-size:12px}
.score{color:var(--caramel);font-weight:700}
.cat{color:var(--sub)}

/* hot */
.hot-grid{display:grid;grid-template-columns:1fr;gap:14px}
.hot-card a{display:flex;gap:14px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);transition:border-color .18s,transform .18s,box-shadow .18s}
.hot-card a:hover{border-color:var(--berry);transform:translateY(-1px);box-shadow:var(--shadow)}
.hot-thumb{flex-shrink:0;width:120px;aspect-ratio:16/9;border-radius:8px;overflow:hidden;background:var(--pink)}
.hot-thumb img{width:100%;height:100%;object-fit:cover}
.hot-body h3{font-size:15px;font-weight:700}
.hot-body p{margin-top:4px;font-size:13px;color:var(--sub);line-height:1.6}
.heat{display:inline-block;margin-top:6px;font-size:12px;color:var(--caramel);font-weight:700}

/* channels */
.channel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0}
.channel{padding:16px 0;border-bottom:1px solid var(--line)}
.channel h3{font-size:16px;font-weight:700}
.channel p{margin-top:6px;font-size:13px;color:var(--sub)}
.channel .count{display:inline-block;margin-top:8px;font-size:13px;font-weight:700;color:var(--berry)}
.channel-more{margin-top:20px}
.channel-more a{font-size:14px;font-weight:600;color:var(--berry)}
.channel-more a:hover{color:var(--berry-dark)}

/* steps */
.steps{display:grid;grid-template-columns:1fr;gap:18px}
.step{padding-left:18px;border-left:2px solid var(--line)}
.step-num{display:block;font-size:26px;font-weight:800;color:var(--berry);line-height:1.1}
.step h3{margin-top:6px;font-size:16px;font-weight:700}
.step p{margin-top:4px;font-size:13px;color:var(--sub)}

/* rank */
.rank-wrap{display:grid;grid-template-columns:1fr;gap:0}
.rank-item{display:flex;align-items:center;gap:12px;padding:12px;border-bottom:1px solid var(--line)}
.rank-item:nth-child(odd){background:rgba(255,244,238,.55)}
.rank-no{flex-shrink:0;min-width:34px;font-size:24px;font-weight:800;color:#E4D3CA;line-height:1;font-variant-numeric:tabular-nums}
.rank-title{flex-shrink:0;font-size:14px;font-weight:600}
.rank-title em{display:block;font-style:normal;font-size:11px;color:var(--sub);font-weight:400}
.bar{flex:1;min-width:50px;height:6px;border-radius:999px;background:var(--pink);overflow:hidden}
.bar i{display:block;height:100%;background:var(--caramel);border-radius:999px}
.rank-score{flex-shrink:0;font-size:13px;font-weight:700;color:var(--caramel);min-width:30px;text-align:right}

/* results */
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding-top:28px;border-top:1px solid var(--line)}
.stat strong{display:block;font-size:36px;font-weight:800;color:var(--berry);line-height:1.1;letter-spacing:-.02em}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--sub)}

/* voices */
.voices{display:grid;grid-template-columns:1fr;gap:18px}
.voice{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow)}
.voice p{font-size:16px;line-height:1.8}
.voice footer{margin-top:14px;font-size:13px;color:var(--sub)}
.voice footer b{color:var(--ink)}
.tag{display:inline-block;margin-left:8px;font-size:12px;color:var(--berry-dark);background:var(--pink);border-radius:999px;padding:1px 10px}

/* audience */
.aud-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:16px 0;border-bottom:1px solid var(--line)}
.aud-row:first-child{border-top:1px solid var(--line)}
.aud-name{font-size:14px;font-weight:700;color:var(--berry-dark);background:var(--pink);border-radius:999px;padding:4px 14px;white-space:nowrap}
.aud-desc{font-size:14px;color:var(--sub);flex:1;min-width:160px}
.aud-row a{font-size:13px;font-weight:600;color:var(--berry);white-space:nowrap}
.aud-row a:hover{color:var(--berry-dark)}

/* news */
.news-grid{display:grid;grid-template-columns:1fr;gap:14px}
.news-card a{display:flex;gap:14px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);transition:border-color .18s,box-shadow .18s}
.news-card a:hover{border-color:var(--berry);box-shadow:var(--shadow)}
.news-thumb{flex-shrink:0;width:132px;aspect-ratio:16/9;border-radius:8px;overflow:hidden;background:var(--pink)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body h3{font-size:15px;font-weight:600;line-height:1.55}
.news-meta{margin-top:8px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--sub)}
.news-tag{color:var(--berry-dark);background:var(--pink);border-radius:var(--r-sm);padding:1px 8px}

/* collections */
.coll-grid{display:grid;grid-template-columns:1fr;gap:18px}
.coll-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:border-color .18s,transform .18s,box-shadow .18s}
.coll-card:hover{border-color:var(--berry);transform:translateY(-2px);box-shadow:var(--shadow)}
.coll-img{aspect-ratio:16/9;background:var(--pink);overflow:hidden}
.coll-img img{width:100%;height:100%;object-fit:cover}
.coll-body{padding:16px}
.coll-body h3{font-size:16px;font-weight:700}
.coll-body p{margin-top:6px;font-size:13px;color:var(--sub);line-height:1.7}
.coll-count{display:inline-block;margin-top:10px;font-size:12px;font-weight:700;color:#fff;background:var(--berry);border-radius:999px;padding:2px 12px}

/* metrics */
.metrics{display:grid;grid-template-columns:1fr;gap:28px}
.metrics h2{font-size:22px;font-weight:800;line-height:1.4}
.metrics .lead{margin-top:12px;font-size:14px;color:var(--sub)}
.metric-rows{display:flex;flex-direction:column;gap:18px}
.metric-row{display:flex;align-items:center;gap:14px}
.metric-label{flex-shrink:0;width:96px;font-size:14px;color:var(--sub)}
.metric-bar{flex:1;min-width:60px;height:8px;border-radius:999px;background:#F3E6DE;overflow:hidden}
.metric-bar i{display:block;height:100%;background:var(--berry);border-radius:999px}
.metric-value{flex-shrink:0;font-size:14px;font-weight:700;color:var(--ink);min-width:64px;text-align:right}

/* faq */
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item summary{position:relative;cursor:pointer;list-style:none;padding:16px 0 16px 16px;font-size:16px;font-weight:600;transition:color .18s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;background:var(--line)}
.faq-item[open] summary{color:var(--berry-dark)}
.faq-item[open] summary::before{background:var(--berry)}
.faq-answer{padding:0 0 18px 16px;font-size:15px;color:var(--sub)}

/* cta */
.cta{background:var(--pink);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0;text-align:center}
.cta h2{font-size:22px;font-weight:800;line-height:1.4}
.cta p{margin-top:12px;font-size:15px;color:var(--sub)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}

/* footer */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding-top:48px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding-bottom:36px}
.footer-brand p{margin-top:12px;font-size:13px;color:var(--sub);line-height:1.8;max-width:320px}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:12px}
.footer-col li{margin-bottom:8px}
.footer-col a,.footer-col span{font-size:13px;color:var(--sub)}
.footer-col a:hover{color:var(--berry)}
.copyright{border-top:1px solid var(--line);padding:18px 0;font-size:13px;color:var(--sub);text-align:center}

@media (max-width:767px){
  .nav-toggle{display:block}
  .search-desktop{display:none}
}
@media (min-width:768px){
  .section{padding:72px 0}
  .container{padding:0 24px}
  .section-head h2{font-size:26px}
  .hero{padding:56px 0 0}
  .hero h1{font-size:40px}
  .hero-stats strong{font-size:26px}
  .poster-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .sol-grid2{grid-template-columns:1fr 1fr;gap:20px}
  .sol-item:nth-child(even){margin-top:24px}
  .news-grid{grid-template-columns:1fr 1fr;gap:16px}
  .coll-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (min-width:1024px){
  .section{padding:88px 0}
  .hero{padding:64px 0 0}
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px}
  .hero h1{font-size:48px}
  .section-head h2{font-size:30px}
  .poster-grid{grid-template-columns:repeat(6,1fr);gap:20px}
  .hot-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .channel-grid{grid-template-columns:repeat(5,1fr)}
  .channel{padding:0 0 0 20px;border-bottom:0;border-left:1px solid var(--line)}
  .channel:first-child{padding-left:0;border-left:0}
  .steps{grid-template-columns:repeat(4,1fr);gap:0}
  .step{border-left:0;padding:0 24px 0 0}
  .step + .step{border-left:1px solid var(--line);padding-left:24px}
  .step:last-child{padding-right:0}
  .rank-wrap{grid-template-columns:1fr 1fr;gap:0 32px}
  .stats-grid{grid-template-columns:repeat(4,1fr);gap:32px}
  .voices{grid-template-columns:1fr 1fr;gap:20px}
  .voice:nth-child(even){margin-top:32px}
  .metrics{grid-template-columns:4fr 8fr;gap:56px;align-items:start}
  .sol-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:start}
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
  .cta{padding:72px 0}
  .cta h2{font-size:28px}
}
@media (max-width:520px){
  .hero-actions .btn{flex:1}
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:4px}
  .hero-stats strong{font-size:20px}
  .hot-thumb{width:96px}
  .news-thumb{width:104px}
  .stat strong{font-size:32px}
  .metric-label{width:72px;font-size:13px}
  .rank-no{font-size:20px;min-width:28px}
}