/* roulang page: index */
:root{
      --ink:#f7f6fb;
      --muted:#a8a5b8;
      --soft:#d8d4e4;
      --line:rgba(255,255,255,.11);
      --panel:#171522;
      --panel-2:#201d2d;
      --page:#0c0b12;
      --accent:#ff557d;
      --accent-2:#ffb86b;
      --violet:#9d7aff;
      --shadow:0 22px 70px rgba(0,0,0,.32);
      --radius:24px;
      --max:1180px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:
        radial-gradient(circle at 78% 7%,rgba(157,122,255,.16),transparent 25rem),
        radial-gradient(circle at 8% 22%,rgba(255,85,125,.10),transparent 22rem),
        var(--page);
      font-family:Inter,"Noto Sans SC","Microsoft YaHei",sans-serif;
      line-height:1.7;
      overflow-x:hidden
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
    .topbar{padding:22px 0;position:relative;z-index:20}
    .nav-shell{
      display:flex;align-items:center;gap:20px;padding:12px 14px 12px 20px;
      border:1px solid var(--line);border-radius:18px;background:rgba(23,21,34,.82);
      backdrop-filter:blur(16px);box-shadow:0 14px 40px rgba(0,0,0,.2)
    }
    .logo{display:flex;align-items:center;gap:11px;font-size:17px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .logo-mark{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--violet));box-shadow:0 8px 22px rgba(255,85,125,.25)}
    .logo-mark::after{content:"";width:9px;height:9px;border-radius:50%;background:#fff}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-link{padding:9px 14px;color:var(--muted);font-size:14px;border-radius:11px;transition:.25s ease}
    .nav-link:hover,.nav-link.active{color:var(--ink);background:rgba(255,255,255,.08)}
    .nav-cta,.btn-primary{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;
      border-radius:12px;padding:11px 17px;font-weight:750;font-size:14px;
      color:#24111b;background:linear-gradient(135deg,#ff7091,var(--accent-2));
      box-shadow:0 12px 28px rgba(255,85,125,.21);transition:.25s ease
    }
    .nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,85,125,.3)}
    .menu-btn{display:none;background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:8px 11px}
    .hero{padding:78px 0 90px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:70px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid rgba(255,184,107,.25);border-radius:999px;color:#ffc890;background:rgba(255,184,107,.08);font-size:12px;font-weight:700;letter-spacing:.04em}
    .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
    h1{font-size:clamp(42px,6vw,76px);line-height:1.1;letter-spacing:-.065em;margin:22px 0 22px;max-width:750px}
    .hero-copy{font-size:18px;color:var(--soft);max-width:650px;margin:0}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:32px 0 25px}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;padding:10px 17px;color:var(--soft);font-weight:700;transition:.25s ease}
    .btn-secondary:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.06);transform:translateY(-2px)}
    .trust-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .trust-row span{display:flex;align-items:center;gap:7px}
    .trust-row i{width:7px;height:7px;background:#70dda7;border-radius:50%;display:block}
    .hero-panel{position:relative;padding:28px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(145deg,rgba(36,32,52,.96),rgba(20,18,29,.96));box-shadow:var(--shadow);overflow:hidden}
    .hero-panel::before{content:"";position:absolute;width:190px;height:190px;border-radius:50%;right:-70px;top:-75px;background:rgba(255,85,125,.22);filter:blur(4px)}
    .panel-head{display:flex;justify-content:space-between;align-items:center;position:relative}
    .panel-title{font-size:18px;font-weight:800}
    .live-dot{color:#ff91a8;font-size:12px;display:flex;align-items:center;gap:6px}.live-dot::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px rgba(255,85,125,.13)}
    .signal{margin:30px 0 24px;padding:22px;border-radius:18px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.08)}
    .signal-label{font-size:12px;color:var(--muted);margin-bottom:8px}.signal strong{font-size:34px;letter-spacing:-.05em}.signal small{color:#73dba6;margin-left:10px}
    .bar-list{display:grid;gap:14px}.bar-item{display:grid;grid-template-columns:90px 1fr 37px;align-items:center;gap:12px;font-size:13px;color:var(--soft)}.bar{height:7px;background:#373244;border-radius:99px;overflow:hidden}.bar b{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--violet))}
    .section{padding:88px 0}.section-alt{background:rgba(255,255,255,.025);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section-head h2{margin:0;font-size:clamp(28px,4vw,46px);line-height:1.2;letter-spacing:-.05em}.section-head p{max-width:520px;color:var(--muted);margin:0}
    .problem-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px}.story-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}.story-card h3{margin:0 0 12px;font-size:22px}.story-card p{color:var(--muted);margin:0}.story-card.emphasis{background:linear-gradient(145deg,rgba(255,85,125,.16),rgba(157,122,255,.10));border-color:rgba(255,113,145,.28)}
    .issue-list{display:grid;gap:12px}.issue{display:flex;gap:14px;padding:18px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.035)}.issue-num{color:var(--accent-2);font-weight:800}.issue p{margin:0;color:var(--soft);font-size:14px}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step{padding:25px;border-radius:20px;background:var(--panel-2);border:1px solid var(--line);transition:.25s}.step:hover,.content-card:hover{transform:translateY(-5px);border-color:rgba(255,184,107,.38);box-shadow:0 16px 38px rgba(0,0,0,.2)}.step-number{font-size:13px;color:var(--accent-2);font-weight:800}.step h3{margin:27px 0 8px;font-size:20px}.step p{margin:0;color:var(--muted);font-size:14px}
    .rail{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.content-card{min-height:218px;padding:20px;display:flex;flex-direction:column;justify-content:flex-end;border:1px solid var(--line);border-radius:20px;position:relative;overflow:hidden;background:linear-gradient(160deg,#30263b,#171522);transition:.25s}.content-card:nth-child(2){background:linear-gradient(160deg,#342630,#191721)}.content-card:nth-child(3){background:linear-gradient(160deg,#252d40,#171522)}.content-card:nth-child(4){background:linear-gradient(160deg,#3a2d26,#171522)}.content-card::after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(0,0,0,.75))}.card-body{position:relative;z-index:1}.card-body h3{font-size:18px;margin:8px 0 4px}.card-body p{font-size:12px;color:#c6c0d1;margin:0}.card-icon{position:absolute;right:19px;top:18px;z-index:1;width:40px;height:40px;border-radius:13px;background:rgba(255,255,255,.12);display:grid;place-items:center;color:#ffc890}
    .update-layout{display:grid;grid-template-columns:1fr .8fr;gap:22px}.timeline{display:grid;gap:0}.timeline-item{display:grid;grid-template-columns:108px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.timeline-item:last-child{border:0}.date{color:var(--accent-2);font-size:13px;font-weight:800}.timeline-item h3{margin:0 0 5px;font-size:17px}.timeline-item p{margin:0;color:var(--muted);font-size:14px}.stat-box{padding:28px;border-radius:var(--radius);background:linear-gradient(145deg,#282138,#181620);border:1px solid var(--line)}.stats{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}.stats b{display:block;font-size:30px}.stats span{color:var(--muted);font-size:12px}
    .news-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}.news-list{border-top:1px solid var(--line)}.news-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.news-row a{font-weight:650;color:var(--soft);transition:.2s}.news-row a:hover{color:#ff9bad}.news-row time{color:var(--muted);font-size:12px;white-space:nowrap}.recommend{padding:25px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line)}.recommend h3{margin-top:0}.recommend ul{list-style:none;padding:0;margin:18px 0 0}.recommend li{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--soft)}.recommend li:last-child{border:0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.faq{padding:21px 23px;border:1px solid var(--line);border-radius:17px;background:rgba(255,255,255,.035)}.faq h3{font-size:16px;margin:0 0 9px}.faq p{font-size:14px;color:var(--muted);margin:0}
    .cta{padding:45px 50px;border-radius:28px;background:linear-gradient(110deg,rgba(255,85,125,.19),rgba(157,122,255,.18));border:1px solid rgba(255,255,255,.13);display:flex;align-items:center;justify-content:space-between;gap:25px}.cta h2{margin:0 0 8px;font-size:32px;letter-spacing:-.04em}.cta p{margin:0;color:var(--soft)}
    .footer{padding:38px 0 28px;border-top:1px solid var(--line)}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:start}.footer p{color:var(--muted);font-size:13px;max-width:420px}.footer-links{display:flex;gap:22px;color:var(--muted);font-size:13px}.footer-links a:hover{color:var(--ink)}.copyright{padding-top:25px;margin-top:25px;border-top:1px solid var(--line);color:#777384;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    .floating-bar{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);z-index:30;display:flex;align-items:center;gap:18px;padding:10px 12px 10px 18px;border:1px solid rgba(255,255,255,.14);background:rgba(23,21,34,.9);backdrop-filter:blur(16px);border-radius:15px;box-shadow:var(--shadow);font-size:13px}.floating-bar span{color:var(--soft)}
    :focus-visible{outline:3px solid rgba(255,184,107,.7);outline-offset:3px}
    @media(max-width:900px){.hero-grid,.problem-layout,.update-layout,.news-grid{grid-template-columns:1fr}.hero{padding-top:45px}.hero-panel{max-width:650px}.rail{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:680px){.container{width:min(calc(100% - 28px),var(--max))}.nav-links{display:none;position:absolute;top:74px;left:0;right:0;padding:10px;border:1px solid var(--line);border-radius:16px;background:#191722;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-link{text-align:center}.nav-cta{display:none}.menu-btn{display:block;margin-left:auto}h1{font-size:43px}.hero-copy{font-size:16px}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:14px}.steps,.faq-grid{grid-template-columns:1fr}.rail{grid-template-columns:1fr 1fr}.content-card{min-height:180px;padding:16px}.cta{display:block;padding:30px 24px}.cta .btn-primary{margin-top:22px}.footer-top,.copyright{display:block}.footer-links{margin-top:20px;flex-wrap:wrap}.floating-bar{left:14px;right:14px;transform:none;justify-content:space-between;gap:8px}.floating-bar span{font-size:12px}.floating-bar .btn-primary{padding:9px 11px;font-size:12px}}

/* roulang page: category1 */
:root{
      --ink:#f7f6fb;
      --muted:#a8a5b8;
      --soft:#d8d4e4;
      --line:rgba(255,255,255,.11);
      --panel:#171522;
      --panel-2:#201d2d;
      --page:#0c0b12;
      --accent:#ff557d;
      --accent-2:#ffb86b;
      --violet:#9d7aff;
      --green:#70dda7;
      --shadow:0 22px 70px rgba(0,0,0,.32);
      --radius:24px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:
      radial-gradient(circle at 78% 7%,rgba(157,122,255,.16),transparent 25rem),
      radial-gradient(circle at 8% 22%,rgba(255,85,125,.10),transparent 22rem),var(--page);
      font-family:Inter,"Noto Sans SC","Microsoft YaHei",sans-serif;
      line-height:1.7;overflow-x:hidden
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
    .topbar{padding:22px 0;position:relative;z-index:20}
    .nav-shell{
      display:flex;align-items:center;gap:20px;padding:12px 14px 12px 20px;
      border:1px solid var(--line);border-radius:18px;background:rgba(23,21,34,.82);
      backdrop-filter:blur(16px);box-shadow:0 14px 40px rgba(0,0,0,.2)
    }
    .logo{display:flex;align-items:center;gap:11px;font-size:17px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .logo-mark{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--violet));box-shadow:0 8px 22px rgba(255,85,125,.25)}
    .logo-mark::after{content:"";width:9px;height:9px;border-radius:50%;background:#fff}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-link{padding:9px 14px;color:var(--muted);font-size:14px;border-radius:11px;transition:.25s ease}
    .nav-link:hover,.nav-link.active{color:var(--ink);background:rgba(255,255,255,.08)}
    .nav-cta,.btn-primary{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;
      border-radius:12px;padding:11px 17px;font-weight:750;font-size:14px;
      color:#24111b;background:linear-gradient(135deg,#ff7091,var(--accent-2));
      box-shadow:0 12px 28px rgba(255,85,125,.21);transition:.25s ease
    }
    .nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,85,125,.3)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;padding:10px 17px;color:var(--soft);font-weight:700;transition:.25s ease}
    .btn-secondary:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.06);transform:translateY(-2px)}
    .menu-btn{display:none;background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:8px 11px}
    .hero{padding:54px 0 82px;position:relative}
    .hero::before{content:"";position:absolute;inset:0 0 20%;background:linear-gradient(115deg,rgba(255,85,125,.12),transparent 43%,rgba(157,122,255,.12));pointer-events:none}
    .hero-grid{position:relative;display:grid;grid-template-columns:1fr .84fr;gap:58px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid rgba(255,184,107,.25);border-radius:999px;color:#ffc890;background:rgba(255,184,107,.08);font-size:12px;font-weight:700;letter-spacing:.04em}
    .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
    h1{font-size:clamp(42px,6vw,78px);line-height:1.08;letter-spacing:-.065em;margin:20px 0 20px;max-width:740px}
    .hero-copy{font-size:18px;color:var(--soft);max-width:650px;margin:0}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:32px 0 25px}
    .trust-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .trust-row span{display:flex;align-items:center;gap:7px}
    .trust-row i{width:7px;height:7px;background:var(--green);border-radius:50%;display:block}
    .hero-panel{position:relative;padding:28px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(145deg,rgba(36,32,52,.96),rgba(20,18,29,.96));box-shadow:var(--shadow);overflow:hidden}
    .hero-panel::before{content:"";position:absolute;width:190px;height:190px;border-radius:50%;right:-70px;top:-75px;background:rgba(255,85,125,.22);filter:blur(4px)}
    .panel-kicker{position:relative;color:#ffc890;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em}
    .panel-title{position:relative;font-size:22px;font-weight:800;margin:7px 0 20px}
    .countdown{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:18px 0 22px}
    .count-box{padding:14px 8px;text-align:center;border:1px solid var(--line);background:rgba(255,255,255,.055);border-radius:15px}
    .count-box strong{display:block;font-size:27px;line-height:1;color:var(--ink)}
    .count-box small{display:block;color:var(--muted);font-size:11px;margin-top:5px}
    .panel-note{position:relative;color:var(--muted);font-size:13px;margin:0 0 20px}
    .panel-actions{position:relative;display:flex;gap:9px;flex-wrap:wrap}
    .section{padding:88px 0}
    .section-alt{background:rgba(255,255,255,.025);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-head h2{margin:0;font-size:clamp(28px,4vw,46px);line-height:1.2;letter-spacing:-.05em}
    .section-head p{max-width:520px;color:var(--muted);margin:0}
    .story-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
    .story-card h3{margin:0 0 12px;font-size:22px}
    .story-card p{color:var(--muted);margin:0}
    .story-card.emphasis{background:linear-gradient(145deg,rgba(255,85,125,.16),rgba(157,122,255,.10));border-color:rgba(255,113,145,.28)}
    .pain-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:20px}
    .issue-list{display:grid;gap:12px}
    .issue{display:flex;gap:14px;align-items:flex-start;padding:16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.035)}
    .issue b{display:block;margin-bottom:3px}
    .issue span{color:var(--muted);font-size:13px}
    .issue-icon{flex:0 0 32px;height:32px;border-radius:10px;display:grid;place-items:center;color:#ffc890;background:rgba(255,184,107,.1)}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .feature{padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--panel);transition:.25s}
    .feature:hover{transform:translateY(-5px);border-color:rgba(255,184,107,.38);box-shadow:0 16px 38px rgba(0,0,0,.2)}
    .feature-no{color:var(--accent-2);font-weight:800;font-size:13px}
    .feature h3{font-size:19px;margin:24px 0 8px}
    .feature p{color:var(--muted);font-size:14px;margin:0}
    .guide-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .guide-board{padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(145deg,#201c2d,#15131d)}
    .guide-board h3{font-size:25px;margin:0 0 20px}
    .guide-row{display:flex;justify-content:space-between;gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}
    .guide-row:last-child{border:0}
    .guide-row strong{font-size:15px}
    .guide-row span{color:var(--muted);font-size:13px;text-align:right}
    .quote{padding:30px;border-radius:var(--radius);background:linear-gradient(135deg,rgba(157,122,255,.2),rgba(255,85,125,.13));border:1px solid rgba(157,122,255,.25);display:flex;flex-direction:column;justify-content:space-between}
    .quote-mark{font-size:58px;color:var(--accent-2);line-height:.8}
    .quote p{font-size:20px;line-height:1.6;margin:25px 0;color:var(--soft)}
    .quote small{color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:25px 20px;border-right:1px solid var(--line);transition:.25s}
    .step:last-child{border-right:0}
    .step-num{color:var(--accent);font-size:13px;font-weight:800}
    .step h3{margin:18px 0 6px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:13px}
    .faq-list{max-width:850px;margin:auto}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;display:flex;justify-content:space-between;gap:15px;padding:21px 0;background:none;border:0;color:var(--ink);text-align:left;font-weight:750}
    .faq-q span{color:var(--accent-2);font-size:22px;transition:.25s}
    .faq-a{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease}
    .faq-a p{margin:0 0 20px}
    .faq-item.open .faq-a{max-height:120px}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .cta{padding:34px;display:flex;justify-content:space-between;align-items:center;gap:25px;border:1px solid rgba(255,113,145,.3);border-radius:var(--radius);background:linear-gradient(105deg,rgba(255,85,125,.16),rgba(157,122,255,.14))}
    .cta h2{margin:0 0 7px;font-size:clamp(25px,4vw,39px);letter-spacing:-.04em}
    .cta p{margin:0;color:var(--muted)}
    .footer{padding:45px 0 25px;border-top:1px solid var(--line);background:rgba(8,7,12,.5)}
    .footer-top{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
    .footer p{color:var(--muted);font-size:13px;max-width:360px;margin:15px 0 0}
    .footer-links{display:flex;gap:22px;color:var(--muted);font-size:14px}
    .footer-links a:hover{color:var(--ink)}
    .copyright{display:flex;justify-content:space-between;gap:20px;margin-top:35px;padding-top:18px;border-top:1px solid var(--line);color:#777384;font-size:12px}
    :focus-visible{outline:3px solid rgba(255,184,107,.75);outline-offset:3px}
    @media(max-width:900px){
      .hero-grid,.pain-grid,.guide-layout{grid-template-columns:1fr}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(2,1fr)}
      .step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}
    }
    @media(max-width:680px){
      .container{width:min(calc(100% - 28px),var(--max))}
      .topbar{padding:14px 0}
      .nav-shell{padding:10px 12px 10px 14px}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;padding:10px;border:1px solid var(--line);border-radius:16px;background:#171522;box-shadow:var(--shadow)}
      .nav-links.show{display:flex}
      .nav-link{padding:12px 14px}
      .nav-cta{display:none}
      .menu-btn{display:block;margin-left:auto}
      .hero{padding:42px 0 62px}
      h1{font-size:clamp(39px,12vw,60px)}
      .hero-copy{font-size:16px}
      .section{padding:62px 0}
      .section-head{display:block;margin-bottom:24px}
      .section-head p{margin-top:14px}
      .feature-grid,.steps{grid-template-columns:1fr}
      .step{border-right:0;border-bottom:1px solid var(--line)}
      .step:last-child{border-bottom:0}
      .cta,.footer-top{display:block}
      .cta .btn-primary{margin-top:20px}
      .footer-links{margin-top:24px;flex-wrap:wrap}
      .copyright{display:block}
      .copyright span{display:block;margin-top:7px}
    }