/* roulang page: index */
:root{
      --ink:#17191d;--muted:#687078;--paper:#f5f6f2;--white:#fff;
      --lime:#c9f34a;--lime-dark:#8fb928;--indigo:#4d45a8;--orange:#e8a35a;
      --line:#dfe3da;--dark:#111719;--dark-2:#1b2423;--radius:18px;
      --shadow:0 14px 36px rgba(22,28,24,.08);--max:1180px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth;scroll-padding-top:112px}
    body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px;overflow-x:hidden}
    a{text-decoration:none;color:inherit} img{display:block;width:100%;object-fit:cover}
    button,input,textarea,select{font:inherit} button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid var(--indigo);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .eyebrow{font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--indigo)}
    .section{padding:104px 0;position:relative}
    .section-head{max-width:720px;margin-bottom:44px}
    .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.2;letter-spacing:-.04em;margin-top:12px}
    .section-head p{color:var(--muted);margin-top:18px;max-width:680px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:9px;font-weight:700;transition:.25s ease;border:1px solid transparent}
    .btn-primary{background:var(--lime);color:#16200c}.btn-primary:hover{background:#dcff69;box-shadow:0 8px 18px rgba(153,190,42,.25);transform:translateY(-2px)}
    .btn-secondary{border-color:var(--ink);color:var(--ink);background:transparent}.btn-secondary:hover{background:var(--ink);color:#fff}
    .btn-dark{background:var(--lime);color:#121817}.btn-dark:hover{background:#e1ff78;transform:translateY(-2px)}
    .tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:99px;background:#edf0e8;color:#525b51;font-size:12px;font-weight:700}
    .tag.lime{background:var(--lime);color:#26300f}
    .mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
    header{position:sticky;top:0;z-index:20;background:rgba(245,246,242,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
    .topbar{height:66px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .logo{font-weight:800;font-size:20px;letter-spacing:-.04em;white-space:nowrap}.logo i{display:inline-block;width:10px;height:10px;background:var(--lime);margin-right:7px;border-radius:2px}
    .trust-note{font-size:13px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:12px}
    .top-actions .btn{min-height:40px;padding:0 16px;font-size:13px}.phone{font-size:13px;font-weight:700}
    .menubtn{display:none;background:none;width:44px;height:44px;font-size:22px}
    .navline{border-top:1px solid #e7e9e3}.navline .container{display:flex;gap:30px;min-height:46px;align-items:center}
    .navline a{font-size:13px;color:#5b625e;font-weight:600;transition:.2s}.navline a:hover,.navline a.active{color:var(--ink)}
    .hero{min-height:650px;display:flex;align-items:center;position:relative;overflow:hidden;background:#202b2a;color:#fff}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,18,17,.88) 0%,rgba(11,18,17,.56) 48%,rgba(11,18,17,.2)),url('/assets/images/e692df28e5df4f84.webp') center/cover}
    .hero:after{content:"";position:absolute;right:-8%;top:-25%;height:150%;width:58%;background:var(--lime);transform:skewX(-16deg);opacity:.93}
    .hero-inner{position:relative;z-index:1;width:min(var(--max),calc(100% - 48px));margin:auto;display:grid;grid-template-columns:5fr 7fr;gap:50px;align-items:center}
    .hero-copy{padding:55px 0}.hero h1{font-size:clamp(42px,6vw,72px);line-height:1.08;letter-spacing:-.07em;max-width:620px}.hero h1 span{color:var(--lime)}
    .hero-copy p{font-size:18px;color:#d9dfd9;max-width:610px;margin:25px 0 30px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .btn-secondary{border-color:#d9e1d8;color:#fff}.hero .btn-secondary:hover{background:#fff;color:var(--ink)}
    .hero-panel{position:relative;z-index:2;background:#f8faf3;color:var(--ink);border:8px solid rgba(255,255,255,.25);box-shadow:0 24px 55px rgba(0,0,0,.25);transform:rotate(2deg)}
    .panel-top{height:42px;background:#e9eee4;display:flex;align-items:center;padding:0 14px;gap:7px}.dot{width:8px;height:8px;border-radius:50%;background:#a9b0a7}.panel-title{margin-left:10px;font-size:12px;color:#626b60}
    .code-window{padding:22px;min-height:300px;display:grid;grid-template-columns:1fr 1fr;gap:20px}.code-lines{font:13px/2 ui-monospace,monospace;color:#555f5a}.code-lines b{color:var(--indigo)}.code-lines em{color:#6e9a19;font-style:normal}.ai-box{border-left:3px solid var(--lime-dark);padding:14px;background:#eef5dc;font-size:13px}.ai-box strong{display:block;margin-bottom:10px}
    .hero-bottom{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);z-index:4;width:min(var(--max),calc(100% - 48px));display:flex;gap:10px;flex-wrap:wrap}
    .hero-bottom .tag{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2)}
    .intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:70px;align-items:center}.intro-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.intro-img img{aspect-ratio:1.5}
    .fact-list{margin:28px 0;display:grid;gap:12px}.fact-list li{list-style:none;border-top:1px solid var(--line);padding:13px 0;display:flex;justify-content:space-between;gap:20px;font-size:14px}.fact-list strong{font-weight:700}
    .pain{background:#eceee8}.pain-grid{display:grid;grid-template-columns:4fr 8fr;gap:70px}.pain-list{border-top:1px solid #cdd2c9}.pain-item{display:grid;grid-template-columns:60px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid #cdd2c9}.pain-item b{font:700 14px ui-monospace,monospace;color:var(--orange)}.pain-item h3{font-size:19px}.pain-item p{color:var(--muted);font-size:14px}
    .solution{background:#fff}.solution-flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);background:var(--paper)}.flow-item{padding:28px 20px;min-height:210px;border-right:1px solid var(--line);position:relative}.flow-item:last-child{border:0}.flow-item:not(:last-child):after{content:"→";position:absolute;right:-12px;top:50%;background:var(--lime);width:24px;height:24px;border-radius:50%;line-height:22px;text-align:center;z-index:1}.flow-num{font:700 12px ui-monospace,monospace;color:var(--indigo)}.flow-item h3{font-size:18px;margin:26px 0 8px}.flow-item p{font-size:13px;color:var(--muted)}
    .workflow{background:#f0f1ed}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}.step{padding:26px;border-left:4px solid var(--indigo);background:#fff;min-height:190px;position:relative}.step:before{counter-increment:step;content:"0" counter(step);font:700 13px ui-monospace,monospace;color:var(--indigo)}.step h3{font-size:19px;margin:24px 0 10px}.step p{font-size:14px;color:var(--muted)}
    .adv-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}.adv-card{padding:24px 18px;border:1px solid var(--line);background:#fff;min-height:225px;transition:.25s}.adv-card:nth-child(2),.adv-card:nth-child(5){transform:translateY(22px)}.adv-card:hover{border-color:var(--lime-dark);transform:translateY(-4px);box-shadow:var(--shadow)}.adv-card:nth-child(2):hover,.adv-card:nth-child(5):hover{transform:translateY(16px)}.adv-card .num{font:700 12px ui-monospace,monospace;color:var(--indigo)}.adv-card h3{font-size:17px;margin:22px 0 8px}.adv-card p{font-size:13px;color:var(--muted)}.signal{margin-top:18px;height:5px;background:var(--lime);width:48px}
    .abilities{background:#fff}.ability-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:18px}.ability{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper);transition:.25s}.ability:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.ability img{height:180px}.ability-body{padding:23px}.ability h3{font-size:21px;margin:12px 0 8px}.ability p{color:var(--muted);font-size:14px;margin-bottom:18px}
    .dark-case{background:var(--dark);color:#edf5e9}.case-grid{display:grid;grid-template-columns:5fr 7fr;gap:80px;align-items:center}.dark-case .eyebrow{color:var(--lime)}.dark-case h2{font-size:clamp(30px,4vw,46px);line-height:1.2;margin:14px 0 20px}.dark-case p{color:#aebbb0}.terminal{border:1px solid #3a4a43;background:#16201f;padding:24px;box-shadow:inset 0 1px rgba(255,255,255,.08)}.terminal-head{display:flex;justify-content:space-between;color:#87988c;font:12px ui-monospace,monospace;border-bottom:1px solid #35423d;padding-bottom:14px}.terminal pre{white-space:pre-wrap;font:14px/2 ui-monospace,monospace;color:#c7d4c7;margin-top:18px}.terminal pre span{color:var(--lime)}
    .stories{background:#e9ece5}.story-track{display:flex;gap:20px;overflow:auto;padding-bottom:14px;scroll-snap-type:x mandatory}.story{min-width:360px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);padding:28px}.story .role{color:var(--indigo);font-size:13px;font-weight:700}.story h3{margin:15px 0 10px;font-size:20px}.story p{font-size:14px;color:var(--muted)}
    .stats{padding:48px 0;background:var(--lime)}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}.stat strong{font:700 clamp(27px,4vw,45px) ui-monospace,monospace;display:block}.stat span{font-size:14px}
    .reviews{background:#fff}.review-box{display:grid;grid-template-columns:1fr 2fr;gap:60px;align-items:center}.quote{font-size:clamp(24px,3.2vw,39px);line-height:1.4;letter-spacing:-.04em}.review-meta{margin-top:22px;color:var(--muted);font-size:14px}.review-controls{display:flex;gap:8px;margin-top:25px}.review-controls button{width:44px;height:44px;border:1px solid var(--line);background:#fff}.review-controls button:hover{background:var(--lime)}
    .audience{background:#f0f1ed}.aud-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.aud{padding:25px;border-top:4px solid var(--indigo);background:#fff}.aud h3{font-size:19px;margin-bottom:10px}.aud p{color:var(--muted);font-size:14px}
    .news{background:#fff}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.news-card{border-bottom:2px solid var(--ink);padding-bottom:20px}.news-card img{aspect-ratio:1.6;margin-bottom:18px}.news-card small{color:var(--indigo);font-weight:700}.news-card h3{font-size:19px;margin:10px 0}.news-card p{font-size:14px;color:var(--muted)}
    .faq{background:#f0f1ed}.faq-list{max-width:850px;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;min-height:64px;background:none;text-align:left;display:flex;align-items:center;justify-content:space-between;font-weight:700;font-size:17px}.faq-q span{font-size:24px;color:var(--indigo);transition:.2s}.faq-a{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease}.faq-item.open .faq-a{max-height:160px;padding:0 35px 22px 0}.faq-item.open .faq-q span{transform:rotate(45deg)}
    .cta{background:var(--indigo);color:#fff;padding:82px 0}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:40px}.cta h2{font-size:clamp(30px,4vw,48px);line-height:1.2}.cta p{color:#d9d8f2;margin-top:13px}.cta-actions{display:flex;gap:12px;flex-wrap:wrap}.cta .btn-secondary{color:#fff;border-color:#aaa7d8}.cta .btn-secondary:hover{background:#fff;color:var(--indigo)}
    .contact-strip{background:#1d2624;color:#dce7da;padding:42px 0}.contact-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:25px}.contact-grid h3{color:#fff;font-size:16px;margin-bottom:8px}.contact-grid p{font-size:13px;color:#aebcb0}.contact-brand{font-size:21px;font-weight:800;color:#fff}.contact-brand i{display:inline-block;width:9px;height:9px;background:var(--lime);margin-right:7px}
    footer{background:#111719;color:#8e9c91;padding:25px 0;font-size:12px}.foot{display:flex;justify-content:space-between;gap:20px}.foot a:hover{color:var(--lime)}
    @media(max-width:1024px){.hero-inner{grid-template-columns:1fr 1fr}.adv-grid{grid-template-columns:repeat(3,1fr)}.solution-flow{grid-template-columns:repeat(3,1fr)}.flow-item:nth-child(3){border-right:0}.flow-item:nth-child(3):after{display:none}.contact-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:767px){.container,.hero-inner,.hero-bottom{width:min(100% - 32px,560px)}.section{padding:72px 0}.topbar{height:62px}.trust-note,.phone,.top-actions .btn{display:none}.menubtn{display:block}.top-actions{margin-left:auto}.navline{display:none}.navline.open{display:block;position:absolute;top:62px;left:0;right:0;background:var(--paper);box-shadow:var(--shadow)}.navline.open .container{display:grid;padding:14px 0;gap:0}.navline a{padding:10px 0;border-bottom:1px solid var(--line)}.hero{min-height:760px;align-items:flex-start}.hero:after{right:-48%;top:43%;width:115%;height:65%;transform:skewX(-13deg)}.hero-inner{display:block}.hero-copy{padding:78px 0 30px}.hero h1{font-size:45px}.hero-copy p{font-size:16px}.hero-panel{transform:rotate(1deg);margin-top:10px}.code-window{min-height:235px;padding:14px;gap:10px}.code-lines{font-size:10px}.ai-box{font-size:11px;padding:9px}.hero-bottom{bottom:18px}.intro-grid,.pain-grid,.case-grid,.review-box{grid-template-columns:1fr;gap:35px}.solution-flow{grid-template-columns:1fr}.flow-item{border-right:0;border-bottom:1px solid var(--line);min-height:auto}.flow-item:not(:last-child):after{content:"↓";right:50%;top:auto;bottom:-12px}.steps{grid-template-columns:1fr}.adv-grid{grid-template-columns:1fr 1fr}.adv-card:nth-child(2),.adv-card:nth-child(5){transform:none}.adv-card:nth-child(2):hover,.adv-card:nth-child(5):hover{transform:translateY(-4px)}.ability-grid,.news-grid{grid-template-columns:1fr}.ability img{height:210px}.story{min-width:82vw}.stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 12px}.aud-grid{grid-template-columns:1fr 1fr}.cta-inner{display:block}.cta-actions{margin-top:28px}.contact-grid{grid-template-columns:1fr 1fr}.foot{display:block}.foot span{display:block;margin-top:8px}}
    @media(max-width:420px){.logo{font-size:17px}.hero h1{font-size:39px}.adv-grid,.aud-grid{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}.btn{width:100%}.hero-actions{display:grid}.cta-actions{display:grid}}