/* roulang page: index */
:root{
  --ink:#252326;--muted:#716a70;--soft:#938a90;--line:#e9e1e3;--paper:#fff;--wash:#fbf8f7;
  --rose:#cf526c;--berry:#8c3a61;--plum:#56344d;--mint:#247b70;--gold:#b27634;
  --rose-soft:#fff0f2;--mint-soft:#e9f6f2;--shadow:0 12px 34px rgba(63,37,49,.08);
  --radius:18px;--radius-sm:11px;--content:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--wash);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit}
.container{width:min(var(--content),calc(100% - 48px));margin-inline:auto}
.skip-link{position:absolute;top:-60px;left:16px;background:#fff;padding:10px 14px;z-index:99}
.skip-link:focus{top:10px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:max-content;font-size:16px;font-weight:800}
.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;color:white;background:linear-gradient(140deg,var(--rose),var(--berry));font-size:15px;box-shadow:0 6px 15px rgba(171,65,103,.22)}
.main-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
.main-nav a{padding:9px 12px;border-radius:9px;color:#625a60;font-size:13px;transition:background .18s,color .18s}
.main-nav a:hover,.main-nav a:focus-visible{background:var(--rose-soft);color:var(--berry);outline:none}
.main-nav a.active{color:var(--berry);font-weight:700}
.nav-menu{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);cursor:pointer}
.nav-menu:focus-visible,.btn:focus-visible,.text-link:focus-visible,.faq-item summary:focus-visible{outline:3px solid rgba(207,82,108,.34);outline-offset:3px}
.hero{position:relative;overflow:hidden;background:#f3e9e9}
.hero:before{content:"";position:absolute;inset:0 0 0 53%;background:linear-gradient(125deg,rgba(251,243,242,.1),rgba(117,55,79,.1)),url("https://images.unsplash.com/photo-1518837695005-2083093ee35b?auto=format&fit=crop&w=1600&q=85") center 46%/cover no-repeat;clip-path:polygon(11% 0,100% 0,100% 100%,0 100%)}
.hero:after{content:"";position:absolute;inset:0 0 0 49%;background:linear-gradient(90deg,rgba(243,233,233,.98),rgba(243,233,233,.52) 32%,rgba(53,31,42,.04))}
.hero-inner{position:relative;z-index:1;min-height:448px;display:flex;align-items:center;padding-block:56px}
.hero-copy{max-width:670px}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--berry);font-size:12px;font-weight:800;letter-spacing:0}
.kicker-dot{width:7px;height:7px;background:var(--rose);border-radius:50%}
h1{max-width:660px;margin:14px 0 10px;font-size:43px;line-height:1.2;font-weight:850}
.highlight{color:var(--rose);background:linear-gradient(90deg,var(--rose),#9d497b);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-subtitle{margin:0 0 13px;font-size:18px;font-weight:700;color:#42343a}
.hero-description{max-width:620px;margin:0;color:#62585e;font-size:15px;line-height:1.9}
.hero-actions{display:flex;gap:12px;margin-top:23px}
.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 19px;border:1px solid transparent;border-radius:10px;font-size:14px;font-weight:750;transition:transform .18s,box-shadow .18s,background .18s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{color:#fff;background:linear-gradient(110deg,var(--rose),var(--berry));box-shadow:0 8px 18px rgba(158,56,95,.2)}
.btn-primary:hover{box-shadow:0 11px 24px rgba(158,56,95,.29)}
.btn-secondary{color:var(--berry);background:#fff;border-color:#e8cdd5}
.btn-secondary:hover{background:var(--rose-soft)}
.hero-note{margin-top:15px;color:#72696e;font-size:12px}
main{display:block}
.section{padding:66px 0;border-bottom:1px solid var(--line)}
.section-white{background:#fff}
.section-tint{background:#f7f1f1}
.section-dark{background:#29232a;color:#fff;border:0}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:25px}
.section-heading h2{margin:0;font-size:27px;line-height:1.3}
.section-heading p{max-width:640px;margin:8px 0 0;color:var(--muted);font-size:14px}
.section-dark .section-heading p{color:#c4b9c0}
.eyebrow{display:block;margin-bottom:8px;color:var(--rose);font-size:11px;font-weight:800}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--berry);font-size:13px;font-weight:750;white-space:nowrap}
.text-link:hover{color:var(--rose)}
.pain-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pain-item{padding:20px 22px;border-right:1px solid var(--line)}
.pain-item:last-child{border-right:0}
.pain-item strong{display:block;margin-bottom:5px;font-size:15px}
.pain-item span{display:block;color:var(--muted);font-size:13px}
.solution-band{display:grid;grid-template-columns:1.05fr 1.4fr;gap:50px;align-items:center}
.solution-copy h2{margin:0 0 12px;font-size:28px}
.solution-copy p{margin:0;color:var(--muted)}
.index-table{border-top:1px solid var(--line)}
.index-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;padding:14px 0;border-bottom:1px solid var(--line);font-size:13px}
.index-row strong{font-size:13px}
.index-row span{color:var(--muted)}
.index-row .value{color:var(--berry);font-weight:700}
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step{position:relative;padding:20px 22px;border-top:2px solid #e5c9d2}
.step-number{display:inline-grid;width:31px;height:31px;place-items:center;border-radius:50%;background:var(--rose-soft);color:var(--berry);font-weight:800;font-size:13px}
.step h3{margin:13px 0 5px;font-size:16px}
.step p{margin:0;color:var(--muted);font-size:13px}
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.topic-card{overflow:hidden;background:white;border:1px solid var(--line);border-radius:var(--radius);transition:transform .2s,box-shadow .2s}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.topic-image{position:relative;aspect-ratio:16/10;overflow:hidden;background:#72535e}
.topic-image:before{content:"";position:absolute;inset:0;background:var(--thumb);transition:transform .35s}
.topic-card:hover .topic-image:before{transform:scale(1.045)}
.topic-image:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(25,20,24,.02),rgba(25,20,24,.24))}
.thumb-index{position:absolute;right:12px;bottom:7px;z-index:1;color:rgba(255,255,255,.58);font-size:31px;font-weight:800}
.topic-body{padding:14px 15px 15px}
.topic-title{display:block;min-height:44px;font-size:14px;font-weight:750;line-height:1.55}
.topic-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:10px}
.badge{display:inline-flex;align-items:center;min-height:23px;padding:2px 8px;border-radius:6px;background:var(--mint-soft);color:#21695f;font-size:11px;font-weight:750;white-space:nowrap}
.badge.rose{background:var(--rose-soft);color:#9d3d5c}
.badge.gold{background:#fbf2e7;color:#8a5b23}
.rating{font-size:12px;font-weight:800;color:#69515a}
.rating small{color:var(--soft);font-weight:500}
.metric-band{display:grid;grid-template-columns:1fr 2fr;gap:40px;align-items:center}
.metric-intro h2{margin:0 0 10px;font-size:27px}
.metric-intro p{margin:0;color:var(--muted)}
.metric-rows{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.metric{padding:16px 18px;border:1px solid var(--line);border-radius:13px;background:#fff}
.metric b{display:block;font-size:14px}
.metric span{display:block;margin-top:4px;color:var(--muted);font-size:12px}
.metric em{display:inline-block;margin-top:10px;color:var(--mint);font-size:11px;font-style:normal;font-weight:750}
.featured-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;grid-template-rows:1fr 1fr;gap:14px}
.featured-item{position:relative;min-height:158px;overflow:hidden;display:flex;align-items:end;padding:18px;border-radius:var(--radius);background:#52414a;color:#fff}
.featured-item:first-child{grid-row:span 2;min-height:330px}
.featured-item:before{content:"";position:absolute;inset:0;background:var(--thumb);transition:transform .35s}
.featured-item:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 10%,rgba(25,18,24,.78))}
.featured-item:hover:before{transform:scale(1.04)}
.featured-copy{position:relative;z-index:1}
.featured-copy h3{margin:8px 0 4px;font-size:17px}
.featured-copy p{margin:0;color:rgba(255,255,255,.79);font-size:12px}
.reason{display:inline-block;padding:4px 8px;border-radius:5px;background:rgba(255,255,255,.2);font-size:11px;font-weight:700}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.category{padding:23px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.45)}
.category h3{margin:0 0 7px;font-size:16px}
.category p{margin:0;color:var(--muted);font-size:13px}
.editorial-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.editorial-step{padding:0 18px 0 0;border-right:1px solid #594d56}
.editorial-step:last-child{border-right:0}
.editorial-step .index{color:#e28ba0;font-size:12px;font-weight:800}
.editorial-step h3{margin:8px 0 5px;font-size:16px}
.editorial-step p{margin:0;color:#c6bbc2;font-size:13px}
.rank-list{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.rank-row{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:12px;min-height:63px;border-bottom:1px solid #493e46}
.rank-number{font-size:18px;font-weight:850;color:#c4a0ad}
.rank-row:nth-child(-n+3) .rank-number{color:#f08da5}
.rank-name{font-size:13px;font-weight:700}
.rank-sub{display:block;color:#b8adb4;font-size:11px;font-weight:400}
.rank-end{text-align:right}
.rank-score{display:block;font-size:12px;font-weight:750;color:#e7c4cf}
.rank-label{display:block;color:#b8adb4;font-size:10px}
.preference-layout{display:grid;grid-template-columns:1fr 1fr;gap:34px}
.preference-layout h2{margin:0 0 12px;font-size:26px}
.preference-layout p{margin:0;color:var(--muted)}
.preference-tags{display:flex;flex-wrap:wrap;align-content:start;gap:10px}
.preference-tags span{padding:9px 13px;border:1px solid #e8d7dc;border-radius:9px;background:#fff;color:#654550;font-size:13px;font-weight:650}
.news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:34px}
.news-feature{display:grid;grid-template-columns:180px 1fr;gap:19px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.news-thumb{aspect-ratio:16/10;border-radius:10px;background:linear-gradient(145deg,#60424f,#d28e99)}
.news-feature h3{margin:0 0 7px;font-size:15px;line-height:1.5}
.news-feature p{margin:0;color:var(--muted);font-size:12px}
.news-date{display:block;margin-top:9px;color:var(--soft);font-size:11px}
.news-list{border-top:1px solid var(--line)}
.news-list a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
.news-list strong{display:block;font-size:13px}
.news-list span{display:block;margin-top:5px;color:var(--soft);font-size:11px}
.metric-chips{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric-chip{min-height:119px;padding:18px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.metric-chip .chip-label{color:var(--muted);font-size:12px}
.metric-chip strong{display:block;margin-top:9px;font-size:17px}
.metric-chip span{display:block;margin-top:5px;color:var(--mint);font-size:11px;font-weight:700}
.special-line{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line)}
.special{padding:19px 20px;border-right:1px solid var(--line)}
.special:last-child{border-right:0}
.special strong{display:block;margin-bottom:5px;font-size:14px}
.special span{color:var(--muted);font-size:12px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{position:relative;padding:18px 38px 18px 0;cursor:pointer;list-style:none;font-weight:750;font-size:14px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";position:absolute;right:5px;top:14px;color:var(--berry);font-size:22px;font-weight:400}
.faq-item[open] summary:after{content:"−"}
.faq-item p{max-width:900px;margin:0;padding:0 36px 18px 0;color:var(--muted);font-size:13px}
.cta-band{padding:48px 0;background:linear-gradient(110deg,#873d60,#bf526f 62%,#d47a81);color:#fff}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:28px}
.cta-inner h2{margin:0 0 6px;font-size:26px}
.cta-inner p{margin:0;color:rgba(255,255,255,.83);font-size:14px}
.cta-band .btn{background:#fff;color:var(--berry);flex:none}
.site-footer{padding:48px 0 20px;background:#282329;color:#f7f0f3}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{font-weight:800;font-size:16px}
.footer-description{max-width:310px;margin:12px 0 0;color:#bcb2b8;font-size:12px}
.footer-col h3{margin:0 0 12px;font-size:13px}
.footer-col a,.footer-col span{display:block;margin:7px 0;color:#c1b7bd;font-size:12px}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;margin-top:36px;padding-top:17px;border-top:1px solid #494149;color:#aaa0a7;font-size:11px}
@media(max-width:1024px){
  .container{width:min(var(--content),calc(100% - 36px))}
  .header-inner{gap:15px}.main-nav a{padding-inline:8px;font-size:12px}
  .topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .metric-band{grid-template-columns:1fr;gap:22px}
  .footer-grid{gap:25px}
}
@media(max-width:768px){
  .header-inner{min-height:68px;flex-wrap:wrap}
  .brand{font-size:14px}.brand-mark{width:35px;height:35px}
  .nav-menu{display:grid;place-items:center;margin-left:auto}
  .main-nav{display:none;order:3;width:100%;overflow-x:auto;margin:0;padding:0 0 10px;gap:3px}
  .main-nav.is-open{display:flex}
  .main-nav a{flex:none}
  .hero:before{inset:0;background-position:center;background-size:cover;clip-path:none}
  .hero:after{inset:0;background:linear-gradient(90deg,rgba(249,242,241,.96),rgba(249,242,241,.83) 62%,rgba(249,242,241,.52))}
  .hero-inner{min-height:405px;padding-block:42px}
  h1{font-size:36px}
  .section{padding:50px 0}
  .section-heading{align-items:start}
  .pain-strip{grid-template-columns:1fr 1fr}
  .pain-item:nth-child(2){border-right:0}
  .pain-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .solution-band{grid-template-columns:1fr;gap:25px}
  .step-grid{grid-template-columns:1fr 1fr;row-gap:14px}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
  .featured-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .featured-item:first-child{grid-row:auto;min-height:200px}
  .featured-item{min-height:155px}
  .category-grid{grid-template-columns:1fr 1fr}
  .editorial-steps{grid-template-columns:1fr;gap:18px}
  .editorial-step{padding:0 0 16px;border-right:0;border-bottom:1px solid #594d56}
  .editorial-step:last-child{border:0}
  .rank-list{grid-template-columns:1fr;gap:0}
  .preference-layout,.news-layout{grid-template-columns:1fr;gap:22px}
  .metric-chips{grid-template-columns:1fr 1fr}
  .special-line{grid-template-columns:1fr 1fr}
  .special:nth-child(2){border-right:0}
  .special:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .container{width:calc(100% - 30px)}
  .header-inner{gap:10px}
  .brand{font-size:13px}
  .hero-inner{min-height:420px}
  h1{font-size:31px}
  .hero-subtitle{font-size:16px}
  .hero-description{font-size:14px}
  .hero-actions{gap:9px}
  .btn{min-height:44px;padding:0 13px;font-size:13px}
  .section{padding:42px 0}
  .section-heading{display:block}
  .section-heading h2{font-size:23px}
  .section-heading .text-link{margin-top:12px}
  .pain-item{padding:15px 12px}
  .pain-item strong{font-size:13px}
  .pain-item span{font-size:12px}
  .index-row{grid-template-columns:1fr 1fr;gap:5px 10px}
  .index-row .value{grid-column:1/-1}
  .step-grid{grid-template-columns:1fr 1fr}
  .step{padding:15px 12px}
  .step h3{font-size:14px}
  .topic-grid{gap:10px}
  .topic-body{padding:11px}
  .topic-title{font-size:12px;min-height:39px}
  .topic-meta{align-items:start;flex-direction:column}
  .featured-grid{gap:10px}
  .featured-item:first-child{grid-column:1/-1;min-height:220px}
  .featured-item{min-height:145px;padding:13px}
  .featured-copy h3{font-size:14px}
  .category{padding:16px 13px}
  .category h3{font-size:14px}
  .category p{font-size:12px}
  .metric-rows{grid-template-columns:1fr 1fr}
  .metric{padding:13px}
  .news-feature{grid-template-columns:112px 1fr;gap:12px}
  .news-feature h3{font-size:13px}
  .news-feature p{font-size:11px}
  .metric-chip{padding:13px;min-height:105px}
  .metric-chip strong{font-size:15px}
  .special{padding:16px 12px}
  .cta-inner{align-items:flex-start;flex-direction:column}
  .cta-inner h2{font-size:23px}
  .footer-grid{gap:22px 16px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important}
}