/* roulang page: index */
:root{
    --ink:#202522;
    --muted:#69716b;
    --line:#dce3d8;
    --paper:#f5f7f2;
    --white:#fff;
    --lime:#d7f36a;
    --lime-deep:#a9ca38;
    --coral:#f28c71;
    --dark:#202522;
    --radius:8px;
    --shadow:0 14px 32px rgba(32,37,34,.08);
    --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;height:auto}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(245,247,242,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.navbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:26px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:10px;background:var(--dark);color:var(--lime);display:grid;place-items:center;font-size:19px}
.brand-name{font-size:18px}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:9px 13px;border-radius:6px;color:#505952;font-size:14px;transition:.2s ease}
.nav-links a:hover,.nav-links a:focus,.nav-links a.active{background:var(--lime);color:var(--ink);outline:none}
.nav-action{background:var(--dark)!important;color:var(--lime)!important;padding:10px 16px!important}
.menu-toggle{display:none;border:1px solid var(--line);background:var(--white);border-radius:6px;width:42px;height:42px;color:var(--ink)}
.hero{padding:70px 0 44px;background:var(--paper);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#657229;font-weight:800;font-size:13px;letter-spacing:.08em}
.eyebrow:before,.section-kicker:before{content:"";width:26px;height:2px;background:var(--lime-deep)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(40px,5.4vw,72px);line-height:1.12;letter-spacing:-.055em;margin:18px 0 22px;max-width:700px}
h1 em{font-style:normal;color:#729112}
.hero-copy{font-size:18px;color:var(--muted);max-width:650px;margin-bottom:30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 19px;border-radius:6px;border:1px solid var(--dark);font-weight:750;font-size:14px;transition:transform .2s,background .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(32,37,34,.12)}
.btn:focus,input:focus,textarea:focus,summary:focus{outline:3px solid rgba(169,202,56,.55);outline-offset:2px}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-secondary{background:transparent;color:var(--ink)}
.hero-panel{background:var(--dark);padding:24px;border-radius:10px;color:#f3f7ee;box-shadow:var(--shadow)}
.panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.16);padding-bottom:17px;margin-bottom:16px}
.panel-title{font-size:15px;font-weight:800}.live-dot{color:var(--lime);font-size:12px}
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.quick-link{min-height:112px;padding:15px;background:#2d342f;border:1px solid #3c463e;border-radius:7px;display:flex;flex-direction:column;justify-content:space-between;transition:.2s}
.quick-link:hover{background:#3a453d;border-color:var(--lime);transform:translateY(-2px)}
.quick-link strong{font-size:16px}.quick-link span{font-size:12px;color:#bbc5b8}
.signal{display:flex;gap:6px;align-items:center;color:var(--lime);font-size:12px}
main section{padding:76px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:28px}
.section-head h2{font-size:clamp(26px,3vw,42px);letter-spacing:-.04em;line-height:1.2;margin:9px 0 0}
.section-desc{max-width:610px;color:var(--muted);margin:0;font-size:15px}
.stats{padding:32px 0;background:#eaf0e4}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#cbd6c6;border:1px solid #cbd6c6}
.stat{background:#eaf0e4;padding:22px 24px}.stat strong{display:block;font-size:32px;line-height:1.1;margin-bottom:6px}.stat span{color:var(--muted);font-size:13px}
.media-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.media-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.22s ease}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b8c891}
.media-cover{aspect-ratio:1.48;object-fit:cover}
.media-info{padding:14px}.media-info h3{font-size:17px;margin:0 0 8px;line-height:1.35}
.meta-row{display:flex;justify-content:space-between;gap:8px;align-items:center;color:var(--muted);font-size:12px}
.badge{display:inline-flex;padding:3px 7px;border-radius:4px;background:#edf4d3;color:#526a10;font-weight:750}
.score{color:#cb5e43;font-weight:800}
.popular{background:var(--dark);color:#f6f9f1}
.popular .section-desc{color:#b9c3b8}.popular .section-kicker{color:var(--lime)}
.popular-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;grid-template-rows:repeat(2,190px);gap:14px}
.feature-card{position:relative;overflow:hidden;border-radius:8px;background:#3b443d;min-height:190px}
.feature-card:first-child{grid-row:span 2}
.feature-card img{height:100%;object-fit:cover;opacity:.82;transition:.3s}
.feature-card:hover img{transform:scale(1.04);opacity:1}
.feature-overlay{position:absolute;inset:auto 0 0;padding:28px 18px 16px;background:linear-gradient(transparent,rgba(20,24,21,.9))}
.feature-overlay h3{font-size:21px;margin:0 0 3px}.feature-overlay span{font-size:12px;color:#d6e4c3}
.category-layout{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.category{background:var(--paper);padding:24px;min-height:160px;transition:.2s}
.category:hover{background:var(--white)}
.category-num{color:var(--coral);font-size:13px;font-weight:800}.category h3{font-size:20px;margin:12px 0 7px}.category p{color:var(--muted);font-size:14px;margin:0}
.matrix{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:18px;align-items:stretch}
.matrix-lead{background:var(--lime);padding:28px;border-radius:8px;display:flex;flex-direction:column;justify-content:space-between}
.matrix-lead h3{font-size:26px;line-height:1.3;margin:10px 0}.matrix-lead p{font-size:14px;margin:0}
.matrix-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.matrix-item{border-left:3px solid var(--lime-deep);padding:13px 16px;background:var(--white);border-bottom:1px solid var(--line)}
.matrix-item strong{display:block;font-size:15px;margin-bottom:4px}.matrix-item span{font-size:13px;color:var(--muted)}
.compare{background:#edf1ea}
.compare-table{border:1px solid var(--line);background:var(--white);overflow:auto}
.compare-row{display:grid;grid-template-columns:1.2fr repeat(3,1fr);min-width:700px;border-bottom:1px solid var(--line)}
.compare-row:last-child{border-bottom:0}.compare-row > div{padding:15px 18px;font-size:14px;border-right:1px solid var(--line)}
.compare-row > div:last-child{border-right:0}.compare-head{background:var(--dark);color:#fff;font-weight:800}.compare-head > div{color:#fff}.compare-row strong{color:#5c7417}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid var(--lime-deep)}
.milestone{position:relative;padding:25px 22px 10px;border-right:1px solid var(--line)}.milestone:last-child{border:0}
.milestone:before{content:"";position:absolute;top:-8px;left:22px;width:14px;height:14px;border-radius:50%;background:var(--lime);border:3px solid var(--paper)}
.milestone b{font-size:13px;color:#768a27}.milestone h3{font-size:19px;margin:9px 0}.milestone p{font-size:13px;color:var(--muted);margin:0}
.rank-layout{display:grid;grid-template-columns:1fr .78fr;gap:30px;align-items:start}
.rank-list{border-top:1px solid var(--line)}
.rank-item{display:grid;grid-template-columns:44px 1fr 100px 60px;align-items:center;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}
.rank-no{font-size:24px;font-weight:850;color:#a5b27f}.rank-item:nth-child(-n+3) .rank-no{color:var(--coral)}
.rank-name{font-weight:750}.rank-tag{font-size:12px;color:var(--muted)}.rank-hot{text-align:right;font-size:13px;color:var(--muted)}.rank-score{text-align:right;color:#bb5d44;font-weight:800}
.rank-aside{background:var(--dark);color:#fff;border-radius:8px;padding:27px}.rank-aside h3{font-size:26px;margin:0 0 12px}.rank-aside p{color:#c3cdc0;font-size:14px}.rank-aside .score-big{font-size:56px;color:var(--lime);font-weight:850;line-height:1;margin:26px 0 8px}
.news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:30px}
.news-main{background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.news-main img{aspect-ratio:2.1;object-fit:cover}.news-main-body{padding:22px}.news-main h3{font-size:25px;margin:0 0 9px}.news-main p,.news-item p{color:var(--muted);font-size:14px;margin:0}
.news-list{display:flex;flex-direction:column;gap:12px}.news-item{display:grid;grid-template-columns:104px 1fr;gap:14px;background:var(--white);border-bottom:1px solid var(--line);padding-bottom:12px}.news-item img{height:74px;object-fit:cover;border-radius:5px}.news-item h3{font-size:16px;margin:0 0 5px}.news-date{color:#879187;font-size:12px}
.guarantee{background:var(--dark);color:#fff}.guarantee .section-desc{color:#bdc7bd}.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#475149}.guarantee-item{background:var(--dark);padding:23px}.guarantee-item strong{display:block;color:var(--lime);font-size:18px;margin-bottom:6px}.guarantee-item span{color:#c5cec5;font-size:13px}
.quick-answer{display:grid;grid-template-columns:1fr 1fr;gap:14px}.answer{display:flex;gap:15px;padding:20px;background:var(--white);border:1px solid var(--line);border-radius:7px}.answer-mark{width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:var(--lime);display:grid;place-items:center;font-weight:800}.answer h3{font-size:17px;margin:0 0 5px}.answer p{font-size:13px;color:var(--muted);margin:0}
.faq-list{max-width:850px;margin:auto}.faq-list details{background:var(--white);border:1px solid var(--line);margin-bottom:10px;border-radius:6px}.faq-list summary{padding:19px 22px;font-weight:750;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";font-size:22px;color:#7a951d}.faq-list details[open] summary:after{content:"−"}.faq-answer{padding:0 22px 19px;color:var(--muted);font-size:14px}
.topic-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.topic{min-height:150px;padding:22px;background:var(--white);border:1px solid var(--line);border-radius:7px;position:relative;overflow:hidden}.topic:after{content:"↗";position:absolute;right:20px;bottom:16px;color:var(--coral);font-size:24px}.topic h3{font-size:19px;margin:0 0 8px}.topic p{font-size:13px;color:var(--muted);max-width:270px}
.discovery{padding:24px 0;background:var(--lime)}.discovery-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}.discovery h2{font-size:24px;margin:0}.discovery-links{display:flex;gap:8px;flex-wrap:wrap}.discovery-links a{padding:8px 13px;border:1px solid var(--dark);border-radius:5px;font-size:13px;transition:.2s}.discovery-links a:hover{background:var(--dark);color:var(--lime)}
.contact{background:#e9eee5}.contact-box{display:grid;grid-template-columns:.85fr 1.15fr;gap:45px;align-items:start}.contact-copy h2{font-size:39px;line-height:1.2;margin:10px 0 15px}.contact-copy p{color:var(--muted);font-size:15px}.contact-form{background:var(--white);padding:26px;border:1px solid var(--line);border-radius:8px}.field{margin-bottom:15px}.field label{display:block;font-size:13px;font-weight:750;margin-bottom:6px}.field input,.field textarea{width:100%;border:1px solid #cbd5c8;border-radius:5px;padding:12px 13px;color:var(--ink);background:#fbfcfa}.field textarea{min-height:105px;resize:vertical}.form-status{display:none;margin-top:12px;color:#658116;font-size:14px}.form-status.show{display:block}
.site-footer{background:var(--dark);color:#eaf1e7;padding:48px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:35px;padding-bottom:34px;border-bottom:1px solid #465149}.footer-brand p{max-width:290px;color:#b9c4b9;font-size:13px}.footer-col h3{font-size:14px;color:var(--lime);margin:0 0 13px}.footer-col a{display:block;color:#c0c9bf;font-size:13px;margin:7px 0}.footer-col a:hover{color:var(--lime)}.copyright{display:flex;justify-content:space-between;gap:15px;color:#9da99d;font-size:12px;padding-top:18px}
@media(max-width:1100px){.nav-links a{padding-left:8px;padding-right:8px}.hero-grid{gap:35px}.media-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){.nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:var(--paper);padding:12px 20px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px}.menu-toggle{display:block}.hero-grid,.news-layout,.contact-box,.rank-layout{grid-template-columns:1fr}.hero{padding-top:52px}.hero-panel{max-width:680px}.matrix{grid-template-columns:1fr}.matrix-lead{min-height:190px}.timeline{grid-template-columns:repeat(2,1fr);border-top:0;border-left:2px solid var(--lime-deep);margin-left:8px}.milestone{border-right:0;border-bottom:1px solid var(--line);padding-left:28px}.milestone:before{left:-8px;top:29px}.guarantee-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.container{width:min(100% - 28px,var(--container))}.navbar{height:66px}.nav-links{top:66px}.brand-name{font-size:16px}.brand-mark{width:34px;height:34px}.hero{padding:42px 0 34px}h1{font-size:43px}.hero-copy{font-size:16px}.section-head{display:block}.section-head h2{margin-bottom:13px}.stats{padding:20px 0}.stat-grid{grid-template-columns:repeat(2,1fr)}.stat{padding:17px}.stat strong{font-size:26px}.media-grid{grid-template-columns:repeat(2,1fr);gap:10px}.media-info{padding:11px}.media-info h3{font-size:15px}.popular-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:repeat(3,150px)}.feature-card:first-child{grid-row:span 2}.feature-overlay{padding:22px 12px 11px}.feature-overlay h3{font-size:16px}.category-layout,.quick-answer,.topic-strip{grid-template-columns:1fr}.matrix-list{grid-template-columns:1fr}.compare-row > div{padding:12px;font-size:13px}.rank-item{grid-template-columns:33px 1fr 65px}.rank-tag{display:none}.rank-score{font-size:13px}.rank-aside{padding:22px}.news-main h3{font-size:21px}.news-item{grid-template-columns:88px 1fr}.news-item img{height:66px}.guarantee-grid{grid-template-columns:1fr 1fr}.guarantee-item{padding:17px 14px}.discovery-inner{display:block}.discovery h2{margin-bottom:13px}.contact-copy h2{font-size:32px}.contact-form{padding:18px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}}