/* roulang page: index */
:root{
            --yellow:#f4b83f;
            --yellow-deep:#d9961e;
            --cream:#fffaf0;
            --paper:#fffdf8;
            --apricot:#fff0d2;
            --ink:#20201d;
            --muted:#716f68;
            --line:#e8e0d2;
            --green:#6d9277;
            --shadow:0 18px 50px rgba(57,43,18,.10);
            --radius:18px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;line-height:1.7}
        a{text-decoration:none;color:inherit}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid rgba(217,150,30,.55);outline-offset:3px}
        .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);border-bottom:1px solid transparent;transition:.25s ease}
        .site-header.scrolled{border-color:var(--line);box-shadow:0 5px 20px rgba(40,35,25,.05)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
        .brand-mark{width:32px;height:32px;border-radius:10px 15px 10px 15px;background:var(--yellow);display:grid;place-items:center;font-size:15px;font-weight:900;color:#34260e}
        .nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
        .nav-links a{position:relative;font-size:14px;color:#5e5b53;padding:27px 0;transition:.2s}
        .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:2px;background:var(--yellow-deep);transition:.25s}
        .nav-links a:hover,.nav-links a.active{color:var(--ink)}
        .nav-links a:hover:after,.nav-links a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;padding:12px 19px;font-weight:700;transition:.25s ease}
        .nav-cta,.btn-primary{background:var(--yellow);color:#2d230f}
        .nav-cta:hover,.btn-primary:hover{background:var(--yellow-deep);transform:translateY(-2px);box-shadow:0 8px 18px rgba(217,150,30,.23)}
        .btn-secondary{border:1px solid #cfc5b5;background:transparent;color:var(--ink)}
        .btn-secondary:hover{border-color:var(--ink);background:#fff}
        .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px}
        .hero{padding:72px 0 82px;background:var(--cream);overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:54px;align-items:center}
        .eyebrow,.badge{display:inline-flex;align-items:center;gap:7px;color:#795516;background:var(--apricot);border-radius:999px;padding:6px 11px;font-size:12px;font-weight:700}
        .eyebrow:before{content:"";width:7px;height:7px;background:var(--green);border-radius:50%}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(42px,5.2vw,74px);line-height:1.08;letter-spacing:-.07em;margin:20px 0 25px;max-width:680px}
        .hero-copy{font-size:17px;color:var(--muted);max-width:560px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
        .hero-meta{display:flex;gap:30px;margin-top:38px}
        .meta-number{font-size:27px;font-weight:800;letter-spacing:-.05em}
        .meta-label{font-size:12px;color:var(--muted)}
        .hero-visual{position:relative;min-height:470px}
        .hero-image{position:absolute;inset:0 0 0 8%;height:430px;object-fit:cover;border-radius:24px;box-shadow:var(--shadow);transform:rotate(2deg)}
        .hero-panel{position:absolute;left:0;bottom:10px;width:235px;background:var(--ink);color:#fff;border-radius:16px;padding:20px;box-shadow:var(--shadow)}
        .hero-panel small{color:#bcb9b0}.hero-panel strong{display:block;font-size:30px;margin:7px 0}
        .section{padding:88px 0;border-top:1px solid var(--line)}
        .section.soft{background:var(--cream)}
        .section.dark{background:var(--ink);color:#fff;border:0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
        .section-kicker{font-size:12px;color:var(--yellow-deep);font-weight:800;letter-spacing:.12em;text-transform:uppercase}
        h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.06em;margin:8px 0 0}
        .section-intro{max-width:550px;color:var(--muted);margin:0}
        .dark .section-intro{color:#c2c0b8}
        .feature-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
        .feature-main{background:var(--yellow);padding:34px;border-radius:22px;min-height:310px;display:flex;flex-direction:column;justify-content:space-between}
        .feature-main h3{font-size:30px;letter-spacing:-.04em;margin:15px 0 8px}
        .feature-main p{max-width:440px;color:#5b461b}
        .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
        .mini-card,.info-card{border:1px solid var(--line);background:#fff;padding:22px;border-radius:15px;transition:.25s}
        .mini-card:hover,.info-card:hover,.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .mini-card b{display:block;font-size:17px;margin:10px 0 5px}.mini-card p{font-size:13px;color:var(--muted);margin:0}
        .number{font-size:12px;color:var(--yellow-deep);font-weight:800}
        .split{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:center}
        .steps{border-left:1px solid #d7cdbd;margin-top:8px}
        .step{position:relative;padding:0 0 26px 29px}
        .step:last-child{padding-bottom:0}.step:before{content:"";position:absolute;left:-7px;top:5px;width:13px;height:13px;border-radius:50%;background:var(--yellow);border:3px solid var(--paper)}
        .step b{font-size:18px}.step p{font-size:14px;color:var(--muted);margin:5px 0 0}
        .image-card{position:relative;min-height:360px;overflow:hidden;border-radius:22px;background:#e9d2a4}
        .image-card img{width:100%;height:100%;min-height:360px;object-fit:cover}
        .image-label{position:absolute;left:20px;bottom:20px;background:rgba(32,32,29,.88);color:#fff;padding:13px 16px;border-radius:10px;font-size:13px}
        .scene-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:15px}
        .scene{min-height:220px;border-radius:18px;overflow:hidden;position:relative;background:#e9d2a4}
        .scene:first-child{min-height:350px;grid-row:span 2}
        .scene img{width:100%;height:100%;object-fit:cover}
        .scene:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(20,18,12,.75))}
        .scene-caption{position:absolute;z-index:1;left:18px;bottom:16px;color:#fff;font-weight:700}
        .device-stage{background:#f4ead9;padding:40px;border-radius:22px;display:flex;align-items:center;justify-content:center;gap:18px;min-height:390px}
        .device{background:#262622;border:8px solid #151513;border-radius:25px;padding:7px;box-shadow:var(--shadow)}
        .device.phone{width:190px;transform:rotate(-5deg)}.device.tablet{width:340px;transform:rotate(3deg)}
        .device-screen{background:#fff4db;border-radius:15px;overflow:hidden}
        .device-screen img{width:100%;height:235px;object-fit:cover}
        .device-screen .screen-copy{padding:12px;font-size:12px}.screen-line{height:7px;background:#e9d9b9;margin:8px 0;border-radius:5px}
        .timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid #4b4b45;margin-top:22px}
        .release{padding:26px 23px 10px;border-right:1px solid #4b4b45}.release:last-child{border:0}.release .badge{background:#3d3b34;color:#f3c567}.release h3{margin:18px 0 7px}.release p{color:#bcbab1;font-size:14px}
        .case-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.case-card{padding:30px;background:#fff;border:1px solid var(--line);border-radius:20px}.case-card.large{background:var(--ink);color:#fff}.case-card p{color:var(--muted);font-size:14px}.case-card.large p{color:#c4c1b8}.case-result{font-size:39px;font-weight:800;color:var(--yellow);margin:25px 0 5px}
        .plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.plan{border:1px solid var(--line);padding:27px;border-radius:18px;background:#fff}.plan.featured{border:2px solid var(--yellow-deep);transform:translateY(-10px)}.plan h3{font-size:22px}.plan p{color:var(--muted);font-size:14px}.plan ul{list-style:none;padding:12px 0 12px;margin:0;border-top:1px solid var(--line)}.plan li{font-size:14px;padding:7px 0}.plan li:before{content:"✓";color:var(--green);font-weight:800;margin-right:8px}
        .quote-wall{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.quote{border:1px solid var(--line);background:#fff;padding:28px;border-radius:18px;transition:.25s}.quote.big{background:var(--apricot);padding:40px}.quote q{display:block;font-size:25px;line-height:1.45;font-weight:700;letter-spacing:-.04em}.quote small{display:block;color:var(--muted);margin-top:24px}
        .trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px}.trust-item{padding:12px 16px;border:1px solid #d8d1c4;border-radius:999px;color:#555147;background:#fff}
        .faq-list{max-width:850px}.faq-item{border-top:1px solid var(--line)}.faq-question{width:100%;min-height:58px;display:flex;justify-content:space-between;align-items:center;background:none;border:0;text-align:left;font-weight:700;color:var(--ink)}.faq-question span{font-size:23px;font-weight:400;transition:.25s}.faq-item.open .faq-question span{transform:rotate(45deg)}.faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 35px 20px 0}.faq-item.open .faq-answer{display:block}
        .news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.news-feature{background:var(--ink);color:#fff;border-radius:20px;overflow:hidden}.news-feature img{height:230px;width:100%;object-fit:cover}.news-feature div{padding:24px}.news-feature p{color:#c4c1b8;font-size:14px}.news-list{border-top:1px solid var(--line)}.news-row{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.news-row b{font-size:15px}.news-row small{color:var(--muted);white-space:nowrap}
        .final-cta{padding:78px 0;background:var(--yellow)}.final-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.final-cta h2{max-width:650px}.final-cta p{max-width:590px;color:#5d481c}.footer{background:#20201d;color:#fff;padding:48px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer .brand{color:#fff}.footer p,.footer a{color:#aaa79e;font-size:13px}.footer a:hover{color:var(--yellow)}.footer h4{font-size:14px;margin:4px 0 14px}.copyright{border-top:1px solid #393934;margin-top:38px;padding-top:18px;color:#89877f;font-size:12px}
        @media(max-width:1024px){.nav-links{gap:14px}.nav-links a{font-size:13px}.hero-grid{gap:28px}.scene-grid{grid-template-columns:1fr 1fr}.scene:first-child{grid-row:auto;min-height:280px;grid-column:span 2}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
        @media(max-width:768px){.container{width:min(100% - 30px,620px)}.nav-wrap{height:66px}.menu-toggle{display:block;margin-left:auto}.nav-cta{padding:9px 13px;font-size:13px}.nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 20px 20px;flex-direction:column;align-items:stretch;gap:0}.nav-links.open{display:flex}.nav-links a{padding:13px 0}.nav-links a:after{bottom:5px}.hero{padding:48px 0 55px}.hero-grid,.split,.feature-layout,.case-grid,.quote-wall,.news-layout{grid-template-columns:1fr}.hero-visual{min-height:360px;margin-top:15px}.hero-image{height:330px}.feature-list{grid-template-columns:1fr 1fr}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:14px}.plans{grid-template-columns:1fr}.plan.featured{transform:none}.timeline{grid-template-columns:1fr}.release{border-right:0;border-bottom:1px solid #4b4b45}.final-cta-inner{display:block}.final-cta .btn{margin-top:14px}.footer-grid{grid-template-columns:1fr 1fr}}
        @media(max-width:520px){h1{font-size:43px}.hero-copy{font-size:15px}.hero-meta{gap:18px}.hero-visual{min-height:300px}.hero-image{height:275px;left:4%}.hero-panel{width:190px;padding:15px}.hero-panel strong{font-size:24px}.feature-list{grid-template-columns:1fr}.scene-grid{grid-template-columns:1fr}.scene:first-child{grid-column:auto}.device-stage{padding:24px 10px;overflow:hidden}.device.phone{width:140px}.device.tablet{width:230px}.device-screen img{height:170px}.footer-grid{grid-template-columns:1fr}.news-row{display:block}.news-row small{display:block;margin-top:5px}}