/* roulang page: index */
:root{
  --ink:#17151b;--ink-2:#24202b;--plum:#3a203e;--berry:#8e3d68;
  --coral:#f28b67;--lemon:#f4d56b;--paper:#f7f4f1;--mist:#ece8e5;
  --white:#fff;--text:#28252b;--muted:#746d76;--line:#ded7d5;
  --shadow:0 16px 40px rgba(36,24,35,.10);--radius:18px;--max:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;background:var(--paper);color:var(--text);line-height:1.7;font-size:15px;padding-bottom:92px}
a{color:inherit;text-decoration:none;transition:.2s ease}
img{display:block;max-width:100%}
button{font:inherit;border:0;cursor:pointer}
:focus-visible{outline:3px solid var(--lemon);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{height:78px;background:rgba(247,244,241,.94);border-bottom:1px solid rgba(36,24,35,.1);position:sticky;top:0;z-index:20;backdrop-filter:blur(16px)}
.nav-wrap{height:78px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:max-content}
.logo-mark{width:40px;height:40px;border-radius:11px;background:var(--plum);color:var(--lemon);display:grid;place-items:center;position:relative;box-shadow:4px 4px 0 var(--coral);font-size:20px;font-weight:900}
.logo-mark:after{content:"";position:absolute;right:7px;bottom:7px;width:7px;height:7px;background:var(--coral);border-radius:50%}
.brand-name{font-weight:900;letter-spacing:-.04em;font-size:20px;color:var(--ink)}
.nav-links{display:flex;gap:22px;margin-left:auto;align-items:center}
.nav-links a{font-size:14px;color:#665e67;position:relative}
.nav-links a:after{content:"";height:2px;width:0;background:var(--berry);position:absolute;left:0;bottom:-7px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--berry)}
.nav-links a:hover:after,.nav-links a.active:after{width:100%}
.nav-cta,.btn-primary{background:var(--coral);color:#251821;font-weight:800;padding:11px 18px;border-radius:10px;box-shadow:0 6px 0 #d66d55;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.04)}
.menu-btn{display:none;background:var(--plum);color:white;border-radius:9px;padding:9px 12px}
.hero{background:var(--ink);color:var(--white);min-height:620px;position:relative;overflow:hidden;display:flex;align-items:center}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(23,21,27,.98) 22%,rgba(58,32,62,.82) 57%,rgba(23,21,27,.52)),repeating-linear-gradient(90deg,transparent 0 76px,rgba(255,255,255,.025) 77px 78px)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1.05fr;gap:60px;align-items:center;padding:76px 0}
.eyebrow,.kicker{font-size:12px;letter-spacing:.17em;text-transform:uppercase;color:var(--lemon);font-weight:800;margin-bottom:18px}
.hero h1{font-size:clamp(42px,6vw,78px);line-height:1.08;letter-spacing:-.07em;margin-bottom:22px}
.hero h1 strong{color:var(--coral);font-weight:900}
.hero-lead{color:#d6ced7;max-width:590px;font-size:17px;line-height:1.9;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-secondary{border:1px solid rgba(255,255,255,.36);color:#fff;padding:10px 18px;border-radius:10px;font-weight:700}
.btn-secondary:hover{border-color:var(--lemon);color:var(--lemon)}
.hero-stage{height:390px;position:relative;border:1px solid rgba(255,255,255,.2);border-radius:24px;overflow:hidden;background:linear-gradient(135deg,#402641,#8c486b 48%,#e18a72)}
.hero-stage:before,.hero-stage:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 48%,rgba(244,213,107,.38) 49%,transparent 51%);opacity:.8}
.hero-stage:after{background:linear-gradient(35deg,transparent 46%,rgba(255,255,255,.18) 47%,transparent 49%);transform:scale(1.5)}
.stage-label{position:absolute;top:20px;left:20px;background:rgba(23,21,27,.72);padding:6px 10px;border-radius:7px;font-size:12px;z-index:2}
.play-btn{position:absolute;z-index:2;left:50%;top:50%;transform:translate(-50%,-50%);width:76px;height:76px;border-radius:50%;background:var(--lemon);color:var(--ink);display:grid;place-items:center;font-size:27px;box-shadow:0 0 0 12px rgba(244,213,107,.18)}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.04)}
.stage-info{position:absolute;z-index:2;bottom:18px;left:18px;right:18px;display:flex;justify-content:space-between;align-items:end}
.stage-title{font-size:21px;font-weight:800}.stage-time{font-size:12px;color:#eee}
.section{padding:88px 0}.section.alt{background:var(--mist)}.section.dark{background:var(--ink);color:#fff}
.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:34px}
.section-head h2{font-size:clamp(26px,3vw,42px);line-height:1.2;letter-spacing:-.045em;color:var(--ink)}
.dark .section-head h2{color:#fff}
.section-head p{max-width:610px;color:var(--muted);font-size:15px}
.dark .section-head p{color:#bbb1bc}
.text-link{color:var(--berry);font-weight:800;white-space:nowrap}.text-link:hover{text-decoration:underline}
.benefits{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.benefit{background:var(--paper);padding:30px;min-height:190px}.benefit:first-child{background:var(--plum);color:#fff}.benefit:first-child p{color:#d2c4d0}
.num{font-size:12px;color:var(--coral);font-weight:900;letter-spacing:.14em}.benefit h3{font-size:21px;margin:25px 0 10px}.benefit p{color:var(--muted);font-size:14px}
.path{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.path-step{padding:25px 24px 10px;border-right:1px solid var(--line);position:relative}.path-step:last-child{border:0}
.path-step:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--coral);position:absolute;top:-5px;left:24px}
.path-step b{font-size:12px;color:var(--berry)}.path-step h3{font-size:18px;margin:12px 0 8px}.path-step p{font-size:13px;color:var(--muted)}
.content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.content-card{background:#fff;border:1px solid #e5dfdc;border-radius:14px;overflow:hidden;transition:.22s;box-shadow:0 6px 18px rgba(35,25,34,.04)}
.content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.content-card.featured{grid-column:span 2;grid-row:span 2}
.thumb{height:180px;position:relative;overflow:hidden;background:linear-gradient(135deg,#542c53,#d46a70 55%,#f1bc77)}
.featured .thumb{height:250px}
.thumb:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(24,16,25,.65))}
.thumb.t2{background:linear-gradient(135deg,#313d3b,#9caa78 55%,#e6c48b)}
.thumb.t3{background:linear-gradient(135deg,#241e3d,#765e9d 52%,#de988c)}
.thumb.t4{background:linear-gradient(135deg,#63363c,#e0a064 55%,#f3db9b)}
.thumb.t5{background:linear-gradient(135deg,#293f52,#73a9a0 55%,#e8c38c)}
.thumb.t6{background:linear-gradient(135deg,#3b263b,#b35e80 55%,#f0a774)}
.thumb.t7{background:linear-gradient(135deg,#453c24,#b29661 55%,#e2d3b3)}
.thumb.t8{background:linear-gradient(135deg,#202e3d,#65859a 55%,#cdd5c3)}
.thumb.t9{background:linear-gradient(135deg,#432c4d,#a26398 55%,#f0b4a0)}
.thumb.t10{background:linear-gradient(135deg,#30342c,#8c9d65 55%,#e9c88b)}
.thumb.t11{background:linear-gradient(135deg,#42242b,#c26861 55%,#efd092)}
.thumb.t12{background:linear-gradient(135deg,#282a43,#6e72a8 55%,#d7b1a0)}
.badge{position:absolute;z-index:1;top:12px;left:12px;background:var(--lemon);color:#292019;border-radius:5px;padding:3px 7px;font-size:11px;font-weight:900}
.badge.hot{background:var(--coral)}.badge.dark-badge{background:rgba(23,21,27,.76);color:#fff}
.card-copy{padding:15px 16px}.card-copy h3{font-size:16px;line-height:1.4;margin-bottom:9px}.meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.rating{color:#9b5b34;font-weight:800}
.hot-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}.hot-main{background:var(--plum);color:#fff;border-radius:16px;padding:28px;display:flex;flex-direction:column;justify-content:end;min-height:350px;position:relative;overflow:hidden;background-image:linear-gradient(145deg,rgba(58,32,62,.2),rgba(16,12,18,.85)),linear-gradient(135deg,#bd7180,#4d2d57 70%)}
.hot-main h3{font-size:29px;max-width:400px}.hot-main p{color:#d8cbd5;margin:8px 0}.hot-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.hot-item{background:#fff;border:1px solid var(--line);padding:20px;border-radius:12px}.hot-item h3{font-size:16px;margin:12px 0 5px}.hot-item p{color:var(--muted);font-size:13px}.tag{display:inline-block;background:#f2e8e8;color:var(--berry);border-radius:5px;padding:3px 7px;font-size:11px;font-weight:800}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.metric{border-left:3px solid var(--coral);padding:12px 18px;background:#fff}.metric strong{display:block;color:var(--plum);font-size:34px;line-height:1.2}.metric span{font-size:13px;color:var(--muted)}
.category-wall{display:grid;grid-template-columns:1.3fr 1fr 1fr;grid-template-rows:1fr 1fr;gap:14px}.category{padding:24px;border-radius:13px;background:#fff;border:1px solid var(--line);min-height:145px}.category:first-child{grid-row:span 2;background:var(--plum);color:#fff}.category h3{font-size:20px;margin:16px 0 7px}.category p{font-size:13px;color:var(--muted)}.category:first-child p{color:#d8c8d4}
.compare{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);background:#fff}.compare-col{padding:26px}.compare-col:first-child{background:var(--plum);color:white}.compare-col:first-child li{border-color:rgba(255,255,255,.18)}.compare h3{margin-bottom:16px}.compare ul{list-style:none}.compare li{padding:13px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:14px}.check{color:var(--coral);font-weight:900}
.rank-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:24px}.ranking{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}.rank-row{display:grid;grid-template-columns:46px 1fr 100px 70px 80px;align-items:center;padding:14px 18px;border-bottom:1px solid #eee8e5;gap:12px}.rank-row:last-child{border-bottom:0}.rank-no{font-size:20px;font-weight:900;color:var(--berry)}.rank-row:nth-child(-n+4) .rank-no{color:var(--coral)}.rank-name{font-weight:750}.rank-row small{color:var(--muted)}.rank-side{background:var(--ink);color:#fff;border-radius:14px;padding:28px}.rank-side h3{font-size:23px;margin-bottom:14px}.rank-side p{color:#c5b8c1;font-size:14px}.scale{height:7px;background:#554653;border-radius:4px;margin:25px 0 10px;overflow:hidden}.scale i{display:block;height:100%;width:78%;background:var(--lemon)}
.timeline{border-left:2px solid var(--coral);padding-left:25px;display:grid;gap:20px}.event{position:relative}.event:before{content:"";position:absolute;width:10px;height:10px;background:var(--coral);border-radius:50%;left:-31px;top:7px}.event time{font-size:12px;color:var(--berry);font-weight:800}.event h3{font-size:18px;margin:4px 0}.event p{color:var(--muted);font-size:14px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.news{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.news-img{height:140px;background:linear-gradient(135deg,#4a2e53,#d38478)}.news:nth-child(2) .news-img{background:linear-gradient(135deg,#304b51,#a1b77b)}.news:nth-child(3) .news-img{background:linear-gradient(135deg,#3f304c,#8e6ab1)}.news:nth-child(4) .news-img{background:linear-gradient(135deg,#744237,#e2ae68)}.news:nth-child(5) .news-img{background:linear-gradient(135deg,#293e50,#76a9a4)}.news:nth-child(6) .news-img{background:linear-gradient(135deg,#5b3043,#d47e8f)}.news-copy{padding:16px}.news-copy time{font-size:12px;color:var(--berry)}.news-copy h3{font-size:16px;line-height:1.45;margin-top:7px}
.questions{display:grid;grid-template-columns:1fr 1fr;gap:14px}.question{border:1px solid var(--line);border-radius:12px;background:#fff;padding:18px 20px}.question b{color:var(--berry);font-size:13px}.question h3{font-size:17px;margin:7px 0}.question p{color:var(--muted);font-size:14px}
.faq{max-width:880px;margin:auto}.faq details{background:#fff;border-bottom:1px solid var(--line);padding:0 18px}.faq summary{min-height:58px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-weight:800;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";font-size:22px;color:var(--berry)}.faq details[open] summary:after{content:"－"}.faq details p{color:var(--muted);padding:0 35px 20px 0;max-width:760px}
.assurance{background:var(--plum);color:white;padding:26px 30px;border-radius:14px;display:flex;align-items:center;justify-content:space-between;gap:20px}.assurance h2{font-size:24px}.assurance-items{display:flex;gap:22px;flex-wrap:wrap;color:#e1d5df;font-size:13px}.assurance-items span:before{content:"✓";color:var(--lemon);font-weight:900;margin-right:6px}
.site-footer{background:#17151b;color:#d7cdd6;padding:62px 0 26px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}.footer-brand p{color:#938794;max-width:280px;margin-top:14px;font-size:13px}.footer-title{color:#fff;font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:9px;font-size:13px;color:#a99da8}.footer-links a:hover{color:var(--lemon)}.copyright{border-top:1px solid #332d35;margin-top:42px;padding-top:20px;color:#7e737e;font-size:12px;display:flex;justify-content:space-between}
.fixed-cta{position:fixed;z-index:30;bottom:0;left:0;right:0;background:rgba(23,21,27,.96);color:#fff;padding:13px 0;border-top:1px solid #483d49;backdrop-filter:blur(12px)}.fixed-inner{display:flex;align-items:center;justify-content:space-between;gap:18px}.fixed-inner p{font-size:14px}.fixed-actions{display:flex;gap:10px}.fixed-actions a{padding:9px 15px;border-radius:8px;font-size:13px;font-weight:800}.fixed-actions a:first-child{background:var(--coral);color:#241821}.fixed-actions a:last-child{border:1px solid #817382;color:#fff}
@media(max-width:1000px){.nav-links{gap:13px}.hero-inner{gap:28px}.content-grid{grid-template-columns:repeat(3,1fr)}.content-card.featured{grid-column:span 2}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){body{padding-bottom:126px}.container{width:min(100% - 32px,var(--max))}.site-header,.nav-wrap{height:68px}.nav-wrap{justify-content:space-between}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:18px 20px 22px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-links a{padding:11px 0}.nav-cta{margin-top:8px;text-align:center}.menu-btn{display:block}.hero{min-height:auto}.hero-inner{display:block;padding:65px 0 50px}.hero h1{font-size:48px}.hero-lead{font-size:15px}.hero-stage{height:280px;margin-top:42px}.section{padding:60px 0}.section-head{display:block}.section-head h2{margin-bottom:13px}.benefits,.path,.hot-layout,.rank-layout{display:block}.benefit{min-height:0;border-bottom:1px solid var(--line)}.path{border-left:1px solid var(--line);border-top:0}.path-step{border-right:0;border-bottom:1px solid var(--line);padding-left:30px}.path-step:before{left:-5px;top:27px}.content-grid{grid-template-columns:repeat(2,1fr);gap:10px}.content-card.featured{grid-column:span 2}.thumb{height:130px}.featured .thumb{height:205px}.card-copy{padding:12px}.card-copy h3{font-size:14px}.hot-main{min-height:270px;margin-bottom:12px}.hot-list{gap:10px}.hot-item{padding:14px}.hot-item h3{font-size:14px}.metrics{grid-template-columns:repeat(2,1fr)}.category-wall{display:block}.category{margin-bottom:10px}.category:first-child{min-height:190px}.compare{display:block}.compare-col{padding:20px}.rank-row{grid-template-columns:34px 1fr 72px 52px 62px;padding:12px 10px;font-size:12px;gap:5px}.rank-name{font-size:13px}.news-grid{grid-template-columns:1fr 1fr;gap:10px}.news-img{height:100px}.news-copy{padding:11px}.news-copy h3{font-size:14px}.questions{grid-template-columns:1fr}.assurance{display:block;padding:23px}.assurance-items{margin-top:18px;gap:10px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.copyright{display:block}.copyright span{display:block;margin-top:7px}.fixed-inner{display:block}.fixed-inner p{margin-bottom:8px}.fixed-actions a{padding:8px 12px}}
@media(max-width:420px){.brand-name{font-size:17px}.hero h1{font-size:41px}.content-grid{grid-template-columns:1fr 1fr}.rank-row{grid-template-columns:27px 1fr 65px 48px 54px}.rank-row small{font-size:10px}.news-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.fixed-actions a{font-size:12px}}