/* roulang page: index */
:root{
  --brand:#2B5C8A;--brand-deep:#1F4368;--accent:#E3A24A;--accent-deep:#B4781F;
  --bg:#F7F9FC;--surface:#FFFFFF;--ink:#1B2733;--ink-2:#5B6B7C;--line:#E4EAF1;
  --r:16px;--r-sm:12px;
  --sh:0 8px 24px rgba(27,56,88,.08);--sh-h:0 14px 32px rgba(27,56,88,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.75 "PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
input{font:inherit}
h1,h2,h3{font-weight:700;line-height:1.25;letter-spacing:-.01em}
h1{font-size:40px}
h2{font-size:24px}
h3{font-size:18px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){
  .container{padding:0 24px}
  h1{font-size:48px}h2{font-size:28px}h3{font-size:20px}
}
@media(min-width:1024px){
  .container{padding:0 40px}
  h1{font-size:56px}h2{font-size:32px}
}

/* header */
.site-header{background:var(--surface);border-bottom:1px solid var(--line)}
.header-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700}
.brand-mark{width:40px;height:40px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:18px;line-height:1}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.link-cat{font-size:14px;color:var(--ink-2);padding:10px 4px;transition:color .2s}
.link-cat:hover{color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:999px;font-size:14px;font-weight:600;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 22px rgba(31,67,104,.22);transform:translateY(-2px)}
.btn-ghost{background:var(--surface);color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:rgba(43,92,138,.06);box-shadow:0 10px 22px rgba(27,56,88,.12);transform:translateY(-2px)}
.search{order:3;flex:1 1 100%;display:flex;align-items:center;gap:8px;height:48px;padding:0 6px 0 16px;background:var(--surface);border:1px solid var(--line);border-radius:999px;transition:border-color .2s,box-shadow .2s}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,92,138,.15)}
.search-ico{flex:0 0 18px;width:18px;height:18px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round}
.search input{flex:1;min-width:0;border:0;outline:0;background:none;font-size:14px;color:var(--ink)}
.search input::placeholder{color:#93A1B0}
.search button{height:36px;padding:0 16px;border:0;border-radius:999px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;transition:background .2s}
.search button:hover{background:var(--brand-deep)}
.header-nav{display:flex;gap:8px;overflow-x:auto;padding:0 0 12px;scrollbar-width:none}
.header-nav::-webkit-scrollbar{display:none}
.header-nav a{flex:0 0 auto;padding:6px 12px;border-radius:999px;font-size:14px;color:var(--ink-2);white-space:nowrap;transition:color .2s,background .2s}
.header-nav a:hover{color:var(--brand);background:var(--bg)}
.header-nav a.active{color:var(--brand);background:rgba(43,92,138,.09);font-weight:600}
@media(min-width:1024px){
  .header-top{flex-wrap:nowrap;gap:20px;padding:16px 0}
  .search{order:0;flex:1 1 auto;max-width:560px;margin:0 auto}
  .header-actions{margin-left:0}
  .header-nav{justify-content:center;gap:28px;padding:4px 0 0}
  .header-nav a{border-radius:0;padding:10px 2px;background:none}
  .header-nav a:hover{background:none}
  .header-nav a.active{background:none;border-bottom:2px solid var(--accent)}
}

/* hero */
.hero{padding:36px 0 48px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.94),rgba(247,249,252,.97)),url("/assets/images/c2ec9b14757e0d14.jpg") center/cover no-repeat}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:rgba(43,92,138,.09);border-radius:999px;padding:4px 12px;margin-bottom:16px}
.hero h1{margin-bottom:12px}
.hl{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:4px;text-underline-offset:8px}
.hero-sub{font-size:17px;font-weight:600;margin-bottom:10px}
.hero-desc{color:var(--ink-2);max-width:520px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{position:relative;aspect-ratio:16/9;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#E9EEF5;box-shadow:var(--sh)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-chip{position:absolute;left:16px;bottom:16px;background:var(--surface);color:var(--brand);font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;box-shadow:0 6px 16px rgba(27,56,88,.16)}
.roadmap{margin-top:32px}
.roadmap-list{display:grid;grid-template-columns:1fr;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.roadmap-list li{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);font-size:14px}
.roadmap-list li:last-child{border-bottom:0}
.rm-day{font-size:13px;font-weight:700;color:var(--accent-deep);background:rgba(227,162,74,.16);border-radius:6px;padding:1px 8px}
.rm-txt{color:var(--ink-2)}
@media(min-width:768px){
  .roadmap-list{grid-template-columns:repeat(4,1fr)}
  .roadmap-list li{border-bottom:0;border-right:1px solid var(--line)}
  .roadmap-list li:last-child{border-right:0}
}
@media(min-width:1024px){
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1.05fr 1fr;gap:56px}
}

/* sections */
.sec{padding:64px 0}
.sec-alt{background:var(--surface)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.sec-sub{margin-top:10px;color:var(--ink-2);max-width:660px}
.more{font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(43,92,138,.35);padding-bottom:2px;transition:color .2s,border-color .2s}
.more:hover{color:var(--brand-deep);border-color:var(--brand-deep)}
@media(min-width:768px){.sec{padding:80px 0}}
@media(min-width:1024px){.sec{padding:96px 0}}

/* pain */
.pain-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.pain-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);padding:22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(43,92,138,.3)}
.ico{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:rgba(227,162,74,.18);color:var(--accent-deep);font-size:15px;font-weight:700;margin-bottom:14px}
.pain-card h3{font-size:17px;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--ink-2)}
@media(min-width:768px){.pain-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.pain-grid{grid-template-columns:1.25fr 1fr 1fr;gap:20px}}

/* split */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.split-fig{aspect-ratio:4/3;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#E9EEF5;box-shadow:var(--sh)}
.split-fig img{width:100%;height:100%;object-fit:cover}
.steps-lines{margin-top:20px}
.steps-lines li{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line)}
.steps-lines li:last-child{border-bottom:1px solid var(--line)}
.num{flex:0 0 26px;font-size:13px;font-weight:700;color:var(--accent-deep);font-variant-numeric:tabular-nums;padding-top:3px}
.steps-lines h3{font-size:16px;margin-bottom:4px}
.steps-lines p{font-size:14px;color:var(--ink-2)}
@media(min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:56px}}

/* posters */
.poster-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.poster{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.poster:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(43,92,138,.3)}
.poster-img{position:relative;aspect-ratio:2/3;overflow:hidden;background:#E9EEF5}
.poster-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.poster:hover .poster-img img{transform:scale(1.04)}
.badge{position:absolute;left:8px;bottom:8px;height:22px;display:inline-flex;align-items:center;padding:0 6px;border-radius:6px;font-size:11px;font-weight:600;line-height:1}
.badge-hd{background:#E8EFF7;color:var(--brand)}
.badge-bd{background:#FBF0DE;color:var(--accent-deep)}
.badge-ep{background:#EDF1F6;color:var(--ink-2)}
.poster-body{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;padding:10px 12px 12px}
.poster-body h3{font-size:14px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.score{color:var(--accent-deep);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;white-space:nowrap}
.tag{display:inline-block;margin-top:4px;font-size:12px;color:var(--ink-2);background:var(--bg);border-radius:6px;padding:1px 6px}
@media(min-width:768px){
  .poster-grid{grid-template-columns:repeat(3,1fr);gap:20px}
}
@media(min-width:1024px){
  .poster-grid{grid-template-columns:repeat(4,1fr);gap:24px}
}
.hot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.hot-grid .poster-img{aspect-ratio:3/4}
@media(min-width:768px){.hot-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
@media(min-width:1024px){.hot-grid{grid-template-columns:repeat(6,1fr);gap:20px}}

/* method */
.steps{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.step{position:relative;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);padding:22px 20px 20px}
.step::before{content:"";position:absolute;left:20px;top:0;width:28px;height:3px;background:var(--accent);border-radius:0 0 3px 3px}
.step-no{display:block;font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;margin-bottom:8px;font-variant-numeric:tabular-nums}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:14px;color:var(--ink-2)}
@media(min-width:768px){.steps{grid-template-columns:1fr 1fr;gap:20px}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}

/* categories */
.cat-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.cat-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px 22px 22px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(43,92,138,.3)}
.cat-card::before{content:"";position:absolute;left:22px;top:16px;width:26px;height:2px;background:var(--accent);border-radius:2px}
.cat-card h3{font-size:22px;margin-bottom:8px}
.cat-card p{font-size:14px;color:var(--ink-2);margin-bottom:14px}
.cat-card a{font-size:14px;font-weight:600;color:var(--brand)}
.cat-card a:hover{color:var(--brand-deep)}
@media(min-width:520px){.cat-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.cat-grid{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ranking */
.rank-list{display:grid;grid-template-columns:1fr;margin-top:24px;border-top:1px solid var(--line)}
.rank-list li{display:flex;align-items:center;gap:12px;height:56px;padding:0 8px;border-bottom:1px solid var(--line);transition:background .2s}
.rank-list li:hover{background:rgba(43,92,138,.05)}
.rank-no{flex:0 0 26px;font-size:15px;font-weight:700;color:#A9B6C4;font-variant-numeric:tabular-nums}
.rank-list li:nth-child(-n+3) .rank-no{color:var(--accent-deep)}
.rank-name{flex:1;font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-hot{font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.rank-score{font-size:14px;font-weight:700;color:var(--accent-deep);font-variant-numeric:tabular-nums}
.rank-tag{font-size:12px;color:var(--ink-2);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:1px 8px}
@media(min-width:1024px){
  .rank-list{grid-template-columns:1fr 1fr;grid-template-rows:repeat(5,auto);grid-auto-flow:column;column-gap:48px}
}

/* stats */
.stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.stat-num{display:block;font-size:30px;font-weight:700;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-num span{font-size:15px;font-weight:600;margin-left:4px}
.stat p{font-size:13px;color:var(--ink-2);margin-top:6px}
.stat-note{margin-top:16px;font-size:13px;color:var(--ink-2)}
@media(min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);gap:24px}}

/* voices */
.voice-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.voice{display:flex;flex-direction:column;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.voice-top{display:flex;align-items:center;gap:12px}
.avatar{flex:0 0 48px;width:48px;height:48px;border-radius:50%;overflow:hidden;background:#E9EEF5}
.avatar img{width:100%;height:100%;object-fit:cover}
.voice-name{font-size:15px;font-weight:600}
.voice p{font-size:14px;color:var(--ink-2)}
.voice-meta{margin-top:auto;padding-top:10px;border-top:1px solid var(--line);font-size:12px;color:var(--ink-2)}
@media(min-width:768px){.voice-grid{grid-template-columns:repeat(3,1fr);gap:20px}}

/* chip cards */
.chip-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.chip-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:20px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.chip-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(43,92,138,.3)}
.chip-card h3{font-size:16px;margin-bottom:6px}
.chip-card p{font-size:14px;color:var(--ink-2);margin-bottom:10px}
.chip-card a{font-size:14px;font-weight:600;color:var(--brand)}
.chip-card a:hover{color:var(--brand-deep)}
.topic-names{font-size:13px;color:var(--ink-2);border-top:1px solid var(--line);padding-top:10px}
@media(min-width:520px){.chip-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.chip-grid{grid-template-columns:repeat(3,1fr);gap:20px}}

/* news */
.news-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.news{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.news:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(43,92,138,.3)}
.news-thumb{flex:0 0 104px;aspect-ratio:16/9;border-radius:8px;overflow:hidden;background:#E9EEF5}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news h3{font-size:15px;line-height:1.5;margin-bottom:4px}
.news-date{font-size:12px;color:var(--ink-2)}
@media(min-width:768px){.news-grid{grid-template-columns:1fr 1fr;gap:20px}}

/* metrics */
.metrics{display:grid;grid-template-columns:1fr 1fr;margin-top:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.metric{padding:16px 18px;border-bottom:1px solid var(--line)}
.metric span{display:block;font-size:12px;color:var(--ink-2)}
.metric strong{font-size:18px;color:var(--brand);font-variant-numeric:tabular-nums}
@media(min-width:1024px){
  .metrics{grid-template-columns:repeat(4,1fr)}
  .metric{border-bottom:0;border-right:1px solid var(--line)}
  .metric:last-child{border-right:0}
}

/* faq */
.faq{margin-top:24px;display:grid;gap:12px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--sh);padding:0 20px;transition:border-color .2s}
.faq details[open]{border-color:rgba(43,92,138,.3)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;line-height:1.5}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:20px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq p{padding-bottom:18px;font-size:15px;color:var(--ink-2);line-height:1.8}
@media(min-width:768px){.faq summary{font-size:18px}}

/* cta */
.cta{border-top:1px solid var(--line);background:linear-gradient(rgba(247,249,252,.93),rgba(247,249,252,.97)),url("/assets/images/ff178dad9aae45bd.jpg") center/cover no-repeat}
.cta-inner{max-width:720px;margin:0 auto;text-align:center}
.cta h2{margin-bottom:10px}
.cta p{color:var(--ink-2);margin-bottom:22px}
.cta-form{display:flex;flex-direction:column;gap:10px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh);transition:border-color .2s,box-shadow .2s}
.cta-form:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,92,138,.15)}
.cta-form input{height:44px;border:0;outline:0;background:none;padding:0 12px;font-size:14px;color:var(--ink)}
.cta-form input::placeholder{color:#93A1B0}
@media(min-width:520px){
  .cta-form{flex-direction:row;align-items:center;border-radius:999px;padding:6px 6px 6px 16px}
  .cta-form input{flex:1;min-width:0;padding:0}
}

/* footer */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:48px 0 24px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
.foot-brand .brand{margin-bottom:12px}
.foot-brand p{font-size:14px;color:var(--ink-2);max-width:300px}
.foot-col h3{font-size:15px;margin-bottom:12px}
.foot-col li{margin-bottom:8px}
.foot-col a{font-size:14px;color:var(--ink-2);transition:color .2s}
.foot-col a:hover{color:var(--brand)}
.foot-sub{display:flex;gap:8px;margin-top:12px}
.foot-sub input{flex:1;min-width:0;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:0 14px;font-size:14px;outline:0;transition:border-color .2s,box-shadow .2s}
.foot-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,92,138,.15)}
.foot-sub button{height:44px;padding:0 18px;border:0;border-radius:12px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;transition:background .2s}
.foot-sub button:hover{background:var(--brand-deep)}
.copyright{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--ink-2)}
@media(min-width:768px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}