/* roulang page: index */
:root{--ink:#171d20;--muted:#707a7d;--paper:#f4f5f1;--white:#fff;--line:#e1e5e1;--green:#c9ef68;--green-dark:#34553d;--coral:#ff765f;--shadow:0 12px 32px rgba(27,39,35,.08);--radius:8px;--max:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Noto Sans SC","Microsoft YaHei",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{display:block;width:100%;object-fit:cover}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--coral);outline-offset:3px}.container{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(244,245,241,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(225,229,225,.9)}.nav-wrap{height:76px;display:flex;align-items:center;gap:38px}.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-weight:800;font-size:17px}.brand-mark{width:35px;height:35px;display:grid;place-items:center;background:var(--green);border-radius:7px;color:#18211a;font-size:19px}.nav-links{display:flex;align-items:center;gap:27px;margin-left:auto}.nav-links a{font-size:14px;color:#525d5e;transition:color .2s}.nav-links a:hover,.nav-links a.active{color:var(--ink)}.nav-links a.active{font-weight:700}.nav-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:6px;padding:7px 10px}.nav-search input{width:118px;border:0;outline:0;font-size:13px;background:transparent}.search-icon{color:#77817f;font-size:17px}.menu-toggle{display:none;border:0;background:transparent;font-size:24px;padding:8px}
.hero{background:#151b1d;color:#fff;overflow:hidden}.hero-inner{min-height:492px;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:56px;padding-top:50px;padding-bottom:50px}.hero-copy{max-width:570px}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--green);font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase}.eyebrow:before{content:"";width:22px;height:2px;background:var(--green)}h1{font-size:48px;line-height:1.2;letter-spacing:0;margin:19px 0 15px;max-width:560px}.hero-highlight{color:var(--green)}.hero-subtitle{font-size:17px;color:#e2e7e1;margin:0 0 12px;font-weight:600}.hero-desc{font-size:14px;line-height:1.9;color:#aeb9b6;margin:0;max-width:560px}.hero-actions{display:flex;align-items:center;gap:12px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border:1px solid transparent;border-radius:5px;font-size:13px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}.button:hover{transform:translateY(-2px)}.button-primary{background:var(--green);color:#18211a}.button-primary:hover{background:#d8ff83;box-shadow:0 8px 20px #c9ef6830}.button-ghost{border-color:#59615f;color:#fff}.button-ghost:hover{background:#ffffff12}.hero-visual{height:355px;position:relative;overflow:hidden;border-radius:7px}.hero-visual img{height:100%;filter:brightness(.72)}.hero-visual:after{content:"";position:absolute;inset:45% 0 0;background:linear-gradient(transparent,rgba(10,15,16,.8))}.hero-caption{position:absolute;z-index:1;bottom:23px;left:24px;right:24px;display:flex;align-items:flex-end;justify-content:space-between}.hero-caption strong{font-size:22px}.hero-caption span{font-size:12px;color:#d5dcd5}.hero-stamp{position:absolute;z-index:2;top:18px;left:18px;padding:6px 9px;background:var(--green);color:var(--ink);font-size:11px;font-weight:800;border-radius:3px}
main{overflow:hidden}.section{padding:70px 0}.section-white{background:#fff}.section-dark{background:#1b2223;color:#fff}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:28px}.section-kicker{font-size:11px;color:#75817a;font-weight:800;letter-spacing:1.3px;text-transform:uppercase}.section h2{margin:5px 0 0;font-size:28px;line-height:1.35;letter-spacing:0}.section-intro{max-width:650px;color:var(--muted);font-size:14px;line-height:1.85;margin:12px 0 0}.text-link{font-size:13px;font-weight:700;color:var(--green-dark);white-space:nowrap}.text-link:hover{color:#748b29}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff}.metric{padding:23px 25px;border-right:1px solid var(--line)}.metric:last-child{border-right:0}.metric strong{display:block;font-size:27px;line-height:1.2}.metric span{font-size:12px;color:var(--muted)}
.story{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}.story-image{height:310px;overflow:hidden;border-radius:6px}.story-image img{height:100%}.story-copy h2{font-size:30px;margin:8px 0 15px}.story-copy p{color:var(--muted);font-size:14px;line-height:1.9;margin:0 0 15px}.story-note{border-left:3px solid var(--coral);padding:11px 15px;background:#fff;font-size:13px;color:#4e5957}
.topic-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:26px}.topic{padding:19px;background:#fff;border:1px solid var(--line);min-height:147px;transition:transform .2s,box-shadow .2s}.topic:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.topic-number{font-size:11px;color:#8c9690}.topic h3{margin:11px 0 6px;font-size:17px}.topic p{margin:0;color:var(--muted);font-size:12px;line-height:1.75}
.media-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:23px 17px}.media-card{min-width:0}.poster{position:relative;aspect-ratio:3/4;overflow:hidden;border-radius:5px;background:#dfe4de}.poster img{height:100%;transition:transform .35s}.media-card:hover .poster img{transform:scale(1.045)}.poster:after{content:"";position:absolute;inset:55% 0 0;background:linear-gradient(transparent,rgba(14,20,18,.66))}.badge{position:absolute;z-index:1;top:10px;left:10px;padding:4px 7px;border-radius:3px;background:var(--green);color:#243022;font-size:10px;font-weight:800}.poster-score{position:absolute;z-index:1;bottom:10px;right:11px;color:#fff;font-size:12px;font-weight:700}.media-info{padding:10px 2px 0}.media-info h3{font-size:15px;margin:0 0 3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.media-meta{font-size:11px;color:var(--muted)}.hot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.hot-item{display:grid;grid-template-columns:100px 1fr;gap:14px;align-items:center;padding:10px;background:#fff;border:1px solid var(--line);transition:box-shadow .2s,transform .2s}.hot-item:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.hot-item img{height:102px;border-radius:3px}.hot-item h3{font-size:15px;margin:0 0 5px}.hot-item p{font-size:11px;color:var(--muted);margin:0 0 9px}.score{color:#b25833;font-weight:800;font-size:12px}
.benefit-band{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding:28px 0;border-top:1px solid #394343;border-bottom:1px solid #394343}.benefit{display:flex;gap:14px}.benefit-icon{width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;border:1px solid #60705f;border-radius:50%;color:var(--green);font-size:16px}.benefit h3{font-size:14px;margin:0 0 5px}.benefit p{font-size:12px;color:#aab5b1;line-height:1.7;margin:0}
.ranking-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px}.ranking-aside{padding:26px;background:#1b2223;color:#fff;align-self:start}.ranking-aside .section-kicker{color:var(--green)}.ranking-aside h2{font-size:27px;margin:8px 0 12px}.ranking-aside p{font-size:13px;line-height:1.85;color:#b3bcb8}.rank-list{list-style:none;padding:0;margin:0}.rank-row{display:grid;grid-template-columns:35px 1fr auto auto;align-items:center;gap:13px;padding:12px 3px;border-bottom:1px solid var(--line)}.rank-row:last-child{border-bottom:0}.rank-num{font-size:17px;font-weight:800;color:#a0a9a3}.rank-row:nth-child(-n+3) .rank-num{color:#d66b4c}.rank-title{font-size:13px;font-weight:700}.rank-type{font-size:10px;color:#6f7a74;background:#edf0ea;padding:3px 7px;border-radius:3px}.rank-score{font-size:12px;font-weight:800;color:#a75532}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);margin-top:25px}.milestone{padding:22px 24px 0 0;position:relative}.milestone:before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 4px #fff}.milestone time{font-size:11px;color:#87918b}.milestone h3{font-size:15px;margin:9px 0 6px}.milestone p{font-size:12px;color:var(--muted);line-height:1.75;margin:0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.news-card{background:#fff;border:1px solid var(--line);transition:box-shadow .2s,transform .2s}.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.news-card img{height:155px}.news-body{padding:14px 15px}.news-body time{font-size:10px;color:#8a948e}.news-body h3{font-size:14px;line-height:1.6;margin:6px 0 0}
.security{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.security h2{font-size:27px;margin:7px 0 12px}.security p{font-size:13px;color:#adb8b3;line-height:1.9;margin:0}.security-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}.security-item{padding:14px;border:1px solid #3b4543;font-size:12px;color:#e0e6e1}.security-item b{display:block;color:var(--green);font-size:14px;margin-bottom:3px}
.quote-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.quote{background:#fff;padding:21px;border:1px solid var(--line)}.quote p{font-size:13px;line-height:1.8;margin:0 0 15px;color:#46514e}.quote strong{font-size:11px;color:#7c8780}
.entry-panel{display:flex;align-items:center;justify-content:space-between;gap:25px;background:var(--green);padding:30px 34px}.entry-panel h2{font-size:24px;margin:0 0 5px}.entry-panel p{font-size:13px;margin:0;color:#394532}.entry-panel .button{background:#17201b;color:#fff}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-item{border:1px solid var(--line);background:#fff;padding:16px 18px}.faq-item summary{cursor:pointer;font-size:14px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";font-size:18px;color:#849044}.faq-item[open] summary:after{content:"−"}.faq-item p{font-size:12px;line-height:1.8;color:var(--muted);margin:12px 0 0}
.site-footer{background:#151b1d;color:#fff;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px;padding-bottom:34px}.footer-brand p{max-width:300px;color:#a6b0ac;font-size:12px;line-height:1.8}.footer-col h3{font-size:13px;margin:0 0 13px}.footer-col a,.footer-col span{display:block;color:#a6b0ac;font-size:12px;margin:8px 0}.footer-col a:hover{color:var(--green)}.copyright{border-top:1px solid #303938;padding-top:17px;display:flex;justify-content:space-between;gap:16px;color:#7f8a85;font-size:11px}.legal-note{max-width:680px;text-align:right}
@media(max-width:1024px){.nav-wrap{gap:20px}.nav-links{gap:16px}.nav-search input{width:85px}.hero-inner{gap:32px}.topic-grid{grid-template-columns:repeat(3,1fr)}.media-grid{grid-template-columns:repeat(3,1fr)}.ranking-layout{gap:28px}}
@media(max-width:768px){.container{width:min(100% - 36px,var(--max))}.nav-wrap{height:66px}.menu-toggle{display:block;margin-left:auto}.nav-search{margin-left:auto}.nav-links{display:none;position:absolute;top:66px;left:0;right:0;margin:0;padding:15px 20px;background:#f4f5f1;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:10px 22px}.nav-links.open{display:flex}.nav-links a{padding:5px 0}.hero-inner{grid-template-columns:1fr;gap:26px;padding-top:43px;padding-bottom:38px}.hero-copy{max-width:640px}h1{font-size:40px}.hero-visual{height:300px}.section{padding:55px 0}.section-head{align-items:flex-start}.metrics{grid-template-columns:repeat(2,1fr)}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}.story{grid-template-columns:1fr;gap:25px}.story-image{height:280px}.hot-grid{grid-template-columns:repeat(2,1fr)}.benefit-band{grid-template-columns:1fr;gap:20px}.ranking-layout{grid-template-columns:1fr}.ranking-aside{padding:22px}.security{grid-template-columns:1fr;gap:24px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:520px){.container{width:calc(100% - 30px)}.brand{font-size:14px;gap:8px}.brand-mark{width:31px;height:31px}.nav-search{padding:6px 8px}.nav-search input{width:68px;font-size:12px}.hero-inner{padding-top:34px}.hero h1{font-size:34px}.hero-subtitle{font-size:15px}.hero-desc{font-size:13px}.hero-actions{flex-wrap:wrap}.hero-visual{height:240px}.hero-caption strong{font-size:18px}.section{padding:45px 0}.section h2{font-size:23px}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:13px}.metrics{grid-template-columns:1fr 1fr}.metric{padding:17px 13px}.metric strong{font-size:23px}.topic-grid{grid-template-columns:repeat(2,1fr);gap:9px}.topic{padding:14px;min-height:140px}.media-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 11px}.hot-grid{grid-template-columns:1fr}.hot-item{grid-template-columns:91px 1fr}.hot-item img{height:90px}.rank-row{grid-template-columns:27px 1fr auto;gap:8px}.rank-type{display:none}.timeline{grid-template-columns:1fr}.milestone{padding:18px 0 5px 17px;border-left:1px solid var(--line)}.milestone:before{top:21px;left:-5px}.news-grid{grid-template-columns:1fr 1fr;gap:10px}.news-card img{height:115px}.news-body{padding:11px}.news-body h3{font-size:12px}.security-list{grid-template-columns:1fr 1fr;gap:7px}.security-item{padding:11px}.quote-row{grid-template-columns:1fr}.entry-panel{align-items:flex-start;flex-direction:column;padding:23px}.faq-list{grid-template-columns:1fr}.footer-grid{gap:24px 18px}.copyright{flex-direction:column}.legal-note{text-align:left}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}