/* roulang page: index */
:root{
      --ink:#202824;--muted:#68736d;--line:#dfe5df;--paper:#f6f7f4;--white:#fff;
      --green:#17684f;--green-dark:#104c3b;--lime:#d8ec83;--coral:#dc705d;
      --soft-green:#e8f1eb;--soft-yellow:#f2f4df;--radius:6px;--shadow:0 10px 28px rgba(25,48,37,.08);
      --max:1180px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:88px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;letter-spacing:0}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button{font:inherit}
    button,a{-webkit-tap-highlight-color:transparent}
    :focus-visible{outline:3px solid #e6a14a;outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
    .site-header{height:76px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;font-size:17px;font-weight:800;white-space:nowrap}
    .brand-mark{width:38px;height:38px;background:var(--green);color:white;display:grid;place-items:center;border-radius:5px;font-size:16px;font-weight:800}
    .nav-links{display:flex;align-items:center;gap:27px;margin-left:auto}
    .nav-links a{font-size:14px;color:#4f5c55;padding:8px 0;border-bottom:2px solid transparent;transition:color .18s,border-color .18s}
    .nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--green);border-color:var(--green)}
    .nav-action,.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 18px;border:1px solid var(--green);border-radius:4px;background:var(--green);color:white;font-size:14px;font-weight:700;transition:background .18s,border-color .18s,transform .18s}
    .nav-action:hover,.button-primary:hover{background:var(--green-dark);border-color:var(--green-dark)}
    .button:active,.nav-action:active{transform:translateY(1px)}
    .button-secondary{background:rgba(255,255,255,.92);color:var(--ink);border-color:rgba(32,40,36,.28)}
    .button-secondary:hover{background:white;border-color:var(--green);color:var(--green)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:white;border-radius:4px;color:var(--ink);cursor:pointer}
    .menu-toggle span,.menu-toggle::before,.menu-toggle::after{content:"";display:block;width:18px;height:2px;background:currentColor;margin:4px auto}
    .hero{position:relative;isolation:isolate;min-height:490px;display:flex;align-items:center;color:white;background:#27473a url("https://images.unsplash.com/photo-1489599849927-2ee91cede3ba?auto=format&fit=crop&w=2000&q=88") center 46%/cover no-repeat}
    .hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(12,34,25,.89) 0%,rgba(17,45,34,.73) 48%,rgba(19,38,30,.28) 100%)}
    .hero-content{padding:55px 0 52px;max-width:720px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#e4f0cf;font-size:13px;font-weight:700}
    .eyebrow::before{content:"";width:24px;height:2px;background:var(--lime)}
    h1{margin:14px 0 12px;font-size:54px;line-height:1.13;font-weight:800;letter-spacing:0}
    h1 mark{background:var(--lime);color:var(--green-dark);padding:0 7px}
    .hero-subtitle{font-size:20px;font-weight:600;margin:0 0 11px}
    .hero-copy{max-width:660px;color:rgba(255,255,255,.86);font-size:15px;line-height:1.9;margin:0}
    .hero-actions{display:flex;gap:12px;margin-top:24px}
    .hero .button-secondary{background:transparent;color:white;border-color:rgba(255,255,255,.62)}
    .hero .button-secondary:hover{background:rgba(255,255,255,.12);border-color:white}
    .hero-meta{display:flex;gap:24px;margin-top:22px;color:rgba(255,255,255,.8);font-size:12px}
    .hero-meta strong{color:white}
    main{padding-bottom:78px}
    .section{padding:54px 0;border-bottom:1px solid var(--line)}
    .section-white{background:white}
    .section-soft{background:#eef3ee}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:25px}
    .section-kicker{display:block;color:var(--green);font-size:12px;font-weight:800;text-transform:uppercase;margin-bottom:5px}
    h2{font-size:28px;line-height:1.3;margin:0;font-weight:800;letter-spacing:0}
    .section-intro{max-width:650px;margin:9px 0 0;color:var(--muted);font-size:14px}
    .text-link{color:var(--green);font-size:14px;font-weight:700;white-space:nowrap}
    .text-link:hover{text-decoration:underline;text-underline-offset:4px}
    .benefits{padding:24px 0}
    .benefit-row{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
    .benefit{padding:10px 28px;border-right:1px solid var(--line);display:flex;gap:15px;align-items:flex-start}
    .benefit:first-child{padding-left:0}.benefit:last-child{border:0}
    .benefit-icon{width:40px;height:40px;flex:none;display:grid;place-items:center;background:var(--soft-green);color:var(--green);border-radius:4px;font-size:18px;font-weight:800}
    .benefit h3{font-size:16px;margin:0 0 4px}.benefit p{font-size:13px;color:var(--muted);margin:0;line-height:1.65}
    .scene-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
    .scene-steps{display:grid;gap:0;margin-top:21px}
    .scene-step{display:grid;grid-template-columns:34px 1fr;gap:13px;padding:13px 0;border-top:1px solid var(--line)}
    .step-num{width:29px;height:29px;display:grid;place-items:center;background:var(--green);color:white;border-radius:50%;font-size:12px;font-weight:800}
    .scene-step strong{display:block;font-size:14px;margin:0 0 3px}.scene-step p{margin:0;font-size:13px;color:var(--muted)}
    .scene-board{min-height:290px;background:#24483a;color:white;display:grid;grid-template-columns:1.1fr .9fr;overflow:hidden;border-radius:var(--radius)}
    .scene-photo{min-height:290px;background:url("https://images.unsplash.com/photo-1517604931442-7e0c8ed2963c?auto=format&fit=crop&w=900&q=85") center/cover}
    .scene-info{padding:27px 23px;display:flex;flex-direction:column;justify-content:space-between}
    .scene-info small{color:#c9dec9}.scene-info h3{font-size:23px;line-height:1.35;margin:10px 0}
    .scene-info p{font-size:13px;color:rgba(255,255,255,.78);margin:0}
    .scene-tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}
    .tag{display:inline-flex;align-items:center;padding:4px 8px;border-radius:3px;background:#e9f1ec;color:#315c48;font-size:11px;font-weight:700}
    .tag-dark{background:rgba(255,255,255,.15);color:white}
    .poster-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:23px 16px}
    .poster{min-width:0}
    .poster-art{aspect-ratio:2/2.75;position:relative;overflow:hidden;border-radius:4px;background:#d9e4d8}
    .poster-art img{width:100%;height:100%;object-fit:cover;transition:transform .25s}
    .poster:hover .poster-art img{transform:scale(1.035)}
    .poster-overlay{position:absolute;inset:auto 0 0;padding:40px 12px 12px;background:linear-gradient(transparent,rgba(0,0,0,.7));color:white}
    .poster-overlay span{font-size:11px}
    .poster-title{font-size:14px;line-height:1.45;font-weight:750;margin:10px 0 4px}
    .poster-meta{display:flex;justify-content:space-between;gap:6px;color:var(--muted);font-size:11px}
    .rating{color:#a65f2b;font-weight:800}
    .poster-state{position:absolute;top:9px;left:9px;background:#f5f6e4;color:#445b35;border-radius:3px;padding:4px 7px;font-size:10px;font-weight:800}
    .fresh-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
    .fresh-grid .poster-art{aspect-ratio:2/2.48}
    .popular-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .feature-pick{display:grid;grid-template-columns:1fr 1fr;min-height:320px;background:#e6ede5;overflow:hidden;border-radius:var(--radius)}
    .feature-pick img{height:100%;width:100%;object-fit:cover}
    .feature-copy{padding:27px;display:flex;flex-direction:column;justify-content:center}
    .feature-copy h3{font-size:23px;line-height:1.4;margin:12px 0 8px}
    .feature-copy p{font-size:13px;color:var(--muted);margin:0}
    .feature-copy .poster-meta{margin-top:17px}
    .popular-list{border-top:1px solid var(--line)}
    .popular-item{display:grid;grid-template-columns:72px 1fr auto;gap:14px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
    .popular-item img{width:72px;height:76px;object-fit:cover;border-radius:3px}
    .popular-item h3{font-size:14px;margin:0 0 3px}.popular-item p{font-size:12px;color:var(--muted);margin:0}
    .popular-score{font-size:13px;color:#9b622b;font-weight:800}
    .category-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
    .category{min-height:152px;padding:21px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:white;transition:background .18s}
    .category:hover{background:#f1f6f1}
    .category-top{display:flex;align-items:center;justify-content:space-between}
    .category h3{font-size:17px;margin:0}.category-icon{font-size:20px;color:var(--green)}
    .category p{font-size:13px;line-height:1.75;color:var(--muted);margin:10px 0 0}
    .topic-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .topic{min-height:185px;position:relative;overflow:hidden;color:white;background:#345747}
    .topic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .25s}
    .topic:hover img{transform:scale(1.04)}
    .topic::after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(0,0,0,.75))}
    .topic-label{position:absolute;z-index:1;left:17px;bottom:14px}
    .topic-label small{font-size:11px;color:rgba(255,255,255,.78)}
    .topic-label strong{display:block;font-size:16px;margin-top:3px}
    .rank-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 46px}
    .rank-list{list-style:none;padding:0;margin:0}
    .rank-item{display:grid;grid-template-columns:34px 1fr auto auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
    .rank-no{font-size:17px;font-weight:800;color:#94a099}
    .rank-item:nth-child(-n+3) .rank-no{color:var(--coral)}
    .rank-name{font-size:14px;font-weight:700}.rank-kind{font-size:11px;color:var(--muted);background:#e8ede8;padding:3px 7px;border-radius:3px}
    .rank-hot{font-size:12px;color:var(--muted);white-space:nowrap}.rank-hot strong{color:var(--ink)}
    .update-table{width:100%;border-collapse:collapse;background:white}
    .update-table th,.update-table td{text-align:left;padding:13px 15px;border-bottom:1px solid var(--line);font-size:13px}
    .update-table th{font-size:11px;color:var(--muted);font-weight:700;background:#f3f6f2}
    .update-table tr:last-child td{border-bottom:0}
    .update-table td:first-child{font-weight:700}
    .status{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;color:#276344}
    .status::before{content:"";width:7px;height:7px;border-radius:50%;background:#4a9b67}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:23px 18px}
    .news-item{display:grid;grid-template-columns:112px 1fr;gap:13px;align-items:start}
    .news-item img{width:112px;height:82px;object-fit:cover;border-radius:3px}
    .news-item h3{font-size:14px;line-height:1.55;margin:0 0 5px}
    .news-item time{font-size:11px;color:var(--muted)}
    .guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:19px}
    .guide{border-top:3px solid var(--green);padding-top:13px}
    .guide h3{font-size:15px;margin:0 0 6px}.guide p{font-size:13px;color:var(--muted);margin:0;line-height:1.75}
    .faq-list{max-width:850px;border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line)}
    summary{cursor:pointer;list-style:none;padding:17px 32px 17px 0;font-size:15px;font-weight:700;position:relative}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"＋";position:absolute;right:2px;top:15px;color:var(--green);font-size:19px}
    details[open] summary::after{content:"−"}
    details p{font-size:14px;color:var(--muted);margin:0;padding:0 30px 17px 0}
    .trust-band{background:#24483a;color:white;padding:27px 0}
    .trust-items{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .trust-item{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:700}
    .trust-icon{width:34px;height:34px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.35);border-radius:50%;color:var(--lime);font-weight:800}
    .trust-item small{display:block;color:rgba(255,255,255,.67);font-size:11px;font-weight:400}
    .footer{background:#17231d;color:white;padding:43px 0 21px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:30px}
    .footer-brand{font-size:17px;font-weight:800;display:flex;align-items:center;gap:10px}
    .footer p{font-size:12px;color:#b7c2ba;line-height:1.8;margin:12px 0 0;max-width:300px}
    .footer h3{font-size:13px;margin:2px 0 12px}
    .footer-links{display:grid;gap:7px}
    .footer-links a{font-size:12px;color:#b7c2ba}
    .footer-links a:hover{color:white}
    .copyright{border-top:1px solid rgba(255,255,255,.15);padding-top:16px;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:#a8b4aa}
    .floating-cta{position:fixed;z-index:25;left:50%;bottom:16px;transform:translateX(-50%);width:min(660px,calc(100% - 32px));display:flex;align-items:center;justify-content:space-between;gap:15px;padding:10px 12px 10px 18px;background:white;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:5px;transition:opacity .2s,transform .2s}
    .floating-cta[hidden]{display:none}
    .floating-cta p{margin:0;font-size:13px;font-weight:700}
    .floating-cta p span{font-weight:400;color:var(--muted)}
    .floating-cta .button{min-height:38px;padding:0 14px}
    .dismiss{width:34px;height:34px;border:0;background:transparent;color:var(--muted);font-size:21px;cursor:pointer;border-radius:3px}
    .dismiss:hover{background:#eef1ed}
    @media(max-width:1024px){
      .poster-grid,.fresh-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
      .news-grid{grid-template-columns:repeat(2,1fr)}
      .popular-layout{grid-template-columns:1fr}
      .feature-pick{min-height:260px}
      .guide-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 36px,var(--max))}
      .site-header{height:68px}
      .nav-wrap{gap:10px}
      .brand{font-size:15px}
      .brand-mark{width:35px;height:35px}
      .menu-toggle{display:block;margin-left:auto}
      .nav-action{display:none}
      .nav-links{display:none;position:absolute;left:0;right:0;top:68px;padding:8px 18px 16px;background:white;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(20,40,30,.08);gap:0;flex-direction:column;align-items:stretch}
      .nav-links.is-open{display:flex}
      .nav-links a{padding:11px 4px;border-bottom:1px solid #edf0ec}
      .hero{min-height:440px}
      .hero-content{padding:44px 0}
      h1{font-size:43px}
      .hero-copy{font-size:14px}
      .section{padding:42px 0}
      .benefit-row{grid-template-columns:1fr}
      .benefit,.benefit:first-child{padding:14px 0;border-right:0;border-bottom:1px solid var(--line)}
      .benefit:last-child{border-bottom:0}
      .scene-layout{grid-template-columns:1fr;gap:24px}
      .scene-board{min-height:250px}
      .scene-photo{min-height:250px}
      .category-grid{grid-template-columns:repeat(2,1fr)}
      .topic-strip{grid-template-columns:repeat(2,1fr)}
      .rank-grid{gap:0 22px}
      .rank-item{grid-template-columns:27px 1fr auto;gap:8px}
      .rank-kind{display:none}
      .trust-items{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 32px)}
      .brand{font-size:13px;gap:8px}
      .brand-mark{width:32px;height:32px;font-size:14px}
      .hero{min-height:440px;background-position:58% center}
      .hero::before{background:linear-gradient(90deg,rgba(12,34,25,.9),rgba(17,45,34,.65))}
      h1{font-size:37px}
      .hero-subtitle{font-size:17px}
      .hero-copy{line-height:1.8}
      .hero-actions{gap:9px}
      .button{padding:0 13px;font-size:13px}
      .hero-meta{gap:13px;flex-wrap:wrap}
      .section-head{align-items:flex-start;flex-direction:column;gap:9px}
      h2{font-size:24px}
      .poster-grid,.fresh-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 13px}
      .poster-title{font-size:13px}
      .feature-pick{grid-template-columns:1fr}
      .feature-pick img{height:190px}
      .feature-copy{padding:19px}
      .popular-item{grid-template-columns:60px 1fr auto}
      .popular-item img{width:60px;height:65px}
      .category{padding:15px;min-height:160px}
      .category h3{font-size:15px}
      .category p{font-size:12px}
      .topic{min-height:150px}
      .rank-grid{grid-template-columns:1fr}
      .rank-item{grid-template-columns:28px 1fr auto}
      .rank-list + .rank-list .rank-item:first-child{border-top:0}
      .update-table th,.update-table td{padding:11px 8px;font-size:11px}
      .update-table th:nth-child(3),.update-table td:nth-child(3){display:none}
      .news-grid{grid-template-columns:1fr;gap:17px}
      .news-item{grid-template-columns:100px 1fr}
      .news-item img{width:100px;height:76px}
      .guide-grid{grid-template-columns:1fr 1fr;gap:18px 14px}
      .trust-items{grid-template-columns:1fr 1fr;gap:17px 10px}
      .trust-item{font-size:12px;align-items:flex-start}
      .trust-icon{width:29px;height:29px;flex:none}
      .footer-grid{gap:23px 16px}
      .copyright{flex-direction:column;gap:5px}
      .floating-cta{bottom:max(10px,env(safe-area-inset-bottom));padding:8px 8px 8px 12px}
      .floating-cta p{font-size:12px}
      .floating-cta p span{display:none}
      .floating-cta .button{min-height:36px}
    }
    @media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}