/* roulang page: index */
:root{
      --ink:#17201d;
      --muted:#66736d;
      --paper:#f5f6f1;
      --panel:#ffffff;
      --line:#dfe5df;
      --green:#166b55;
      --green-deep:#0d4338;
      --mint:#d9eee3;
      --lime:#c7e76b;
      --orange:#eb754d;
      --shadow:0 18px 45px rgba(25,53,43,.10);
      --radius:18px;
      --small-radius:10px;
      --container:1180px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"Noto Sans SC",Arial,sans-serif;background:var(--paper);color:var(--ink);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{display:block;width:100%;object-fit:cover}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    :focus-visible{outline:3px solid var(--orange);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .eyebrow{font-family:"DM Mono",monospace;text-transform:uppercase;letter-spacing:.08em;font-size:11px;color:var(--green);font-weight:500}
    .section{padding:92px 0;border-top:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px}
    .section-head h2{font-size:clamp(25px,3vw,40px);line-height:1.2;letter-spacing:0;font-weight:800;max-width:620px}
    .section-head p{max-width:480px;color:var(--muted);font-size:14px}
    .topbar{height:76px;background:rgba(245,246,241,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(15px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:11px;min-width:250px;font-weight:800}
    .brand-mark{width:34px;height:34px;background:var(--green);color:white;display:grid;place-items:center;border-radius:9px;font-family:"DM Mono",monospace;font-size:13px}
    .brand-name{font-size:15px;white-space:nowrap}
    .nav{display:flex;align-items:center;gap:5px}
    .nav a{padding:9px 13px;border-radius:8px;color:#53635c;font-size:13px;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--green-deep);background:var(--mint)}
    .nav-cta{background:var(--green)!important;color:#fff!important;padding:10px 17px!important}
    .nav-cta:hover{background:var(--green-deep)!important}
    .menu-toggle{display:none;background:transparent;color:var(--green);font-size:24px}
    .hero{padding:70px 0 62px;background:#eaf1e9;border-bottom:1px solid var(--line);overflow:hidden}
    .hero-grid{display:grid;grid-template-columns:1.14fr .86fr;gap:54px;align-items:center}
    .hero h1{font-size:clamp(37px,5vw,66px);line-height:1.08;letter-spacing:0;font-weight:800;margin:16px 0 20px;max-width:690px}
    .hero h1 em{font-style:normal;color:var(--orange)}
    .hero-lead{font-size:17px;color:#51625a;max-width:680px;line-height:1.9;margin-bottom:28px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:12px 20px;font-weight:700;font-size:14px;transition:.2s;border:1px solid transparent}
    .btn-primary{background:var(--green);color:#fff;box-shadow:0 8px 18px rgba(22,107,85,.18)}
    .btn-primary:hover{background:var(--green-deep);transform:translateY(-2px)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--green-deep)}
    .btn-light:hover{border-color:var(--green);transform:translateY(-2px)}
    .hero-board{background:#173f35;color:#eff8ed;border-radius:16px;padding:25px;box-shadow:var(--shadow);position:relative}
    .board-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.17);padding-bottom:18px;margin-bottom:22px}
    .board-title{font-weight:700}
    .live{font-family:"DM Mono",monospace;font-size:10px;color:var(--lime);display:flex;gap:7px;align-items:center}
    .live:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime)}
    .spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .spec{padding:14px;background:rgba(255,255,255,.08);border-radius:10px}
    .spec small{display:block;color:#aec7bc;font-size:11px;margin-bottom:6px}
    .spec strong{font-family:"DM Mono",monospace;font-size:21px;color:#fff}
    .spec strong i{font-size:11px;font-style:normal;color:var(--lime);margin-left:4px}
    .board-foot{margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.17);font-size:12px;color:#b7d1c4}
    .signal-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:42px}
    .signal{background:#f8faf6;padding:17px 20px}
    .signal b{display:block;font-size:22px;color:var(--green-deep);line-height:1.2}
    .signal span{font-size:12px;color:var(--muted)}
    .split-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:30px}
    .feed{border-top:1px solid var(--line)}
    .feed-item{display:grid;grid-template-columns:95px 1fr auto;gap:18px;padding:18px 0;border-bottom:1px solid var(--line);align-items:center}
    .feed-item img{height:68px;border-radius:8px}
    .feed-item h3{font-size:16px;line-height:1.4;margin-bottom:4px}
    .feed-item p{font-size:12px;color:var(--muted)}
    .time{font-family:"DM Mono",monospace;color:var(--green);font-size:11px;white-space:nowrap}
    .rank-panel{background:var(--green-deep);color:#fff;border-radius:var(--radius);padding:25px}
    .rank-panel h3{font-size:20px;margin-bottom:5px}
    .rank-panel>p{color:#b8d1c3;font-size:12px;margin-bottom:18px}
    .rank-mini{display:flex;align-items:center;gap:12px;border-top:1px solid rgba(255,255,255,.16);padding:13px 0}
    .rank-mini .num{font-family:"DM Mono";color:var(--lime);width:21px}
    .rank-mini strong{font-size:13px;flex:1}
    .rank-mini span{font-family:"DM Mono";font-size:11px;color:#c5ddd1}
    .topic-band{background:var(--orange);color:#fff;padding:28px 0}
    .topic-flex{display:flex;align-items:center;justify-content:space-between;gap:24px}
    .topic-flex h2{font-size:25px;line-height:1.3}
    .topic-flex p{font-size:13px;max-width:600px;color:#fff0ea}
    .topic-flex .btn{background:#fff;color:#a5472e;white-space:nowrap}
    .card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:19px}
    .content-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--small-radius);overflow:hidden;transition:.25s}
    .content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9cec0}
    .card-image{height:170px;position:relative;background:#dbe7dc}
    .card-image img{height:100%}
    .badge{position:absolute;top:11px;left:11px;background:var(--lime);color:#26391e;font-family:"DM Mono",monospace;font-size:10px;font-weight:500;padding:4px 7px;border-radius:5px}
    .card-body{padding:15px}
    .card-body h3{font-size:15px;line-height:1.45;margin-bottom:8px}
    .card-body p{font-size:12px;color:var(--muted);line-height:1.6;min-height:39px}
    .card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:13px;padding-top:11px;border-top:1px solid var(--line);font-family:"DM Mono";font-size:11px;color:var(--green)}
    .latest-grid{grid-template-columns:repeat(4,1fr)}
    .latest-grid .card-image{height:145px}
    .metrics{background:#fff}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line)}
    .metric{padding:28px 25px;border-right:1px solid var(--line)}
    .metric:last-child{border-right:0}
    .metric strong{font-family:"DM Mono";font-size:31px;color:var(--green-deep);display:block}
    .metric span{font-size:13px;color:var(--muted)}
    .metric small{display:block;color:var(--orange);font-size:11px;margin-top:7px}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .step{padding:25px;background:#eef5ed;border-left:3px solid var(--green)}
    .step-num{font-family:"DM Mono";color:var(--orange);font-size:13px}
    .step h3{font-size:18px;margin:17px 0 8px}
    .step p{font-size:13px;color:var(--muted)}
    .category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .category{padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--small-radius);transition:.2s}
    .category:hover{border-color:var(--green);box-shadow:0 10px 25px rgba(25,53,43,.07)}
    .category b{font-size:16px;color:var(--green-deep)}
    .category p{font-size:13px;color:var(--muted);margin-top:8px}
    .top-list{background:#fff;border:1px solid var(--line)}
    .top-row{display:grid;grid-template-columns:54px 1.6fr 1fr 80px 90px;align-items:center;padding:16px 22px;border-bottom:1px solid var(--line);gap:15px}
    .top-row:last-child{border-bottom:0}
    .top-row.header{background:#eef5ed;color:var(--muted);font-size:11px;font-family:"DM Mono"}
    .top-row:not(.header) .index{font-family:"DM Mono";font-size:18px;color:var(--orange)}
    .top-row strong{font-size:14px}
    .trend{font-family:"DM Mono";font-size:11px;color:var(--green)}
    .category-tag{font-size:11px;color:var(--green);background:var(--mint);padding:4px 8px;border-radius:5px;width:max-content}
    .score{font-family:"DM Mono";font-size:13px}
    .partner-section{background:#eef4ef}
    .partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}
    .partner{background:#fff;padding:20px;border:1px solid var(--line);min-height:140px}
    .partner-mark{font-family:"DM Mono";font-size:20px;color:var(--green);margin-bottom:17px}
    .partner h3{font-size:14px;margin-bottom:5px}
    .partner p{font-size:12px;color:var(--muted)}
    .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .quote{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--small-radius)}
    .quote p{font-size:15px;line-height:1.8}
    .quote footer{margin-top:18px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between}
    .subscribe{background:var(--green-deep);color:#fff}
    .subscribe-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .subscribe h2{font-size:28px;line-height:1.3;margin-top:8px}
    .subscribe p{color:#b9d2c5;font-size:13px;margin-top:8px}
    .subscribe-form{display:flex;gap:8px;min-width:390px}
    .subscribe-form input{background:#fff;border:0;border-radius:8px;padding:13px 15px;min-width:0;flex:1;color:var(--ink)}
    .subscribe-form .btn{background:var(--lime);color:#26391e}
    .faq-list{max-width:850px;border-top:1px solid var(--line)}
    .faq{border-bottom:1px solid var(--line);padding:20px 0}
    .faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}
    .faq summary:after{content:"+";font-size:20px;color:var(--orange)}
    .faq[open] summary:after{content:"−"}
    .faq p{color:var(--muted);font-size:13px;margin-top:12px;max-width:760px}
    .final-cta{padding:70px 0;text-align:center;background:#dcece1}
    .final-cta h2{font-size:clamp(27px,4vw,44px);margin:12px auto;max-width:680px;line-height:1.25}
    .final-cta p{color:var(--muted);max-width:600px;margin:0 auto 24px}
    .footer{background:#132d27;color:#d7e7dd;padding:55px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:40px;padding-bottom:40px}
    .footer .brand-name{color:#fff}
    .footer-intro{color:#9cb9ac;font-size:13px;max-width:280px;margin-top:17px}
    .footer h3{font-size:13px;color:#fff;margin-bottom:14px}
    .footer a{display:block;color:#9cb9ac;font-size:12px;margin:8px 0;transition:.2s}
    .footer a:hover{color:var(--lime)}
    .copyright{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;color:#88a79a;font-size:11px;display:flex;justify-content:space-between;gap:20px}
    @media(max-width:1024px){
      .nav a{padding:8px 8px;font-size:12px}
      .brand{min-width:auto}
      .hero-grid{gap:30px}
      .card-grid,.latest-grid{grid-template-columns:repeat(3,1fr)}
      .latest-grid .content-card:last-child{display:none}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .topbar{height:68px}
      .menu-toggle{display:block}
      .nav{display:none;position:absolute;top:68px;left:16px;right:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:10px;flex-direction:column;align-items:stretch;border-radius:10px}
      .nav.open{display:flex}
      .nav a{padding:12px 14px}
      .nav-cta{text-align:center}
      .hero{padding:52px 0 45px}
      .hero-grid,.split-layout{grid-template-columns:1fr}
      .hero h1{font-size:43px}
      .signal-strip{grid-template-columns:repeat(2,1fr);margin-top:30px}
      .section{padding:65px 0}
      .section-head{display:block;margin-bottom:25px}
      .section-head p{margin-top:12px}
      .card-grid,.latest-grid{grid-template-columns:repeat(2,1fr)}
      .latest-grid .content-card:last-child{display:block}
      .category-grid,.partner-grid{grid-template-columns:repeat(2,1fr)}
      .metric-grid{grid-template-columns:repeat(2,1fr)}
      .metric:nth-child(2){border-right:0}
      .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .steps,.quotes{grid-template-columns:1fr}
      .topic-flex,.subscribe-inner{display:block}
      .topic-flex p{margin:10px 0 18px}
      .subscribe-form{min-width:0;margin-top:22px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      .brand-name{font-size:13px}
      .hero h1{font-size:35px}
      .hero-lead{font-size:15px}
      .actions .btn{width:100%}
      .card-grid,.latest-grid,.category-grid,.partner-grid{grid-template-columns:1fr}
      .card-image,.latest-grid .card-image{height:190px}
      .feed-item{grid-template-columns:72px 1fr;gap:12px}
      .feed-item img{height:58px}
      .feed-item .time{grid-column:2}
      .top-row{grid-template-columns:35px 1fr 65px;padding:14px 12px;gap:9px}
      .top-row.header{display:none}
      .top-row .trend,.top-row .category-tag{display:none}
      .metric strong{font-size:25px}
      .metric{padding:22px 16px}
      .subscribe-form{display:block}
      .subscribe-form input,.subscribe-form .btn{width:100%}
      .subscribe-form .btn{margin-top:8px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:7px}
    }