/* roulang page: index */
:root {
            --bg: #08111f;
            --bg-deep: #050b14;
            --panel: rgba(15, 29, 48, .76);
            --panel-solid: #0e1c2e;
            --panel-light: #13263d;
            --primary: #5b7cfa;
            --primary-strong: #7893ff;
            --aqua: #43d9c5;
            --text: #f4f7fb;
            --muted: #9aa9bc;
            --muted-light: #c6d0dc;
            --line: rgba(170, 193, 221, .14);
            --line-strong: rgba(170, 193, 221, .25);
            --radius-lg: 28px;
            --radius-md: 18px;
            --shadow: 0 24px 70px rgba(0, 0, 0, .28);
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background:
                radial-gradient(circle at 75% 8%, rgba(74, 94, 212, .18), transparent 28rem),
                radial-gradient(circle at 15% 32%, rgba(22, 152, 167, .08), transparent 25rem),
                var(--bg);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        ::selection { background: rgba(91,124,250,.45); color: #fff; }

        .site-container {
            width: min(1180px, calc(100% - 40px));
            margin: 0 auto;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(5, 11, 20, .78);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(170, 193, 221, .1);
        }
        .nav-wrap {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: max-content;
            font-weight: 800;
            letter-spacing: -.04em;
            font-size: 17px;
        }
        .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 12px;
            display: grid;
            place-items: center;
            color: #fff;
            background: linear-gradient(145deg, var(--primary-strong), #354cc3);
            box-shadow: 0 8px 26px rgba(91,124,250,.38);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
            flex: 1;
        }
        .nav-link {
            color: var(--muted);
            padding: 9px 13px;
            border-radius: 10px;
            font-size: 14px;
            transition: .25s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: #fff;
            background: rgba(91,124,250,.13);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--line);
            border-radius: 12px;
            background: rgba(255,255,255,.04);
            color: #fff;
        }
        .mobile-menu {
            display: none;
            padding: 10px 0 18px;
            border-top: 1px solid var(--line);
        }
        .mobile-menu.open { display: grid; gap: 4px; }
        .mobile-menu a { padding: 11px 8px; color: var(--muted-light); border-radius: 10px; }
        .mobile-menu a:hover { background: rgba(91,124,250,.12); color: #fff; }

        .btn {
            border: 1px solid transparent;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 45px;
            padding: 0 17px;
            font-size: 14px;
            font-weight: 700;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border .25s ease;
        }
        .btn:hover { transform: translateY(-2px); }
        .btn:focus-visible, .nav-link:focus-visible, input:focus-visible, summary:focus-visible {
            outline: 3px solid rgba(67,217,197,.5);
            outline-offset: 3px;
        }
        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, #6e8aff, #4660dc);
            box-shadow: 0 12px 30px rgba(70,96,220,.32);
        }
        .btn-primary:hover { box-shadow: 0 16px 38px rgba(70,96,220,.48); }
        .btn-secondary {
            color: var(--muted-light);
            background: rgba(255,255,255,.045);
            border-color: var(--line-strong);
        }
        .btn-secondary:hover { color: #fff; background: rgba(255,255,255,.09); }
        .btn-small { min-height: 39px; padding: 0 14px; font-size: 13px; }

        .hero {
            position: relative;
            padding: 90px 0 76px;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            width: 540px;
            height: 540px;
            border-radius: 50%;
            right: -190px;
            top: -220px;
            border: 1px solid rgba(91,124,250,.2);
            box-shadow: 0 0 0 35px rgba(91,124,250,.035), 0 0 0 70px rgba(91,124,250,.025);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 58px;
            align-items: center;
        }
        .eyebrow, .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #aebdff;
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }
        .eyebrow::before, .section-kicker::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--aqua);
        }
        h1, h2, h3, p { margin-top: 0; }
        h1 {
            max-width: 700px;
            margin: 18px 0 22px;
            font-size: clamp(42px, 6vw, 78px);
            line-height: 1.08;
            letter-spacing: -.07em;
            font-weight: 850;
        }
        .hero-copy {
            max-width: 650px;
            color: var(--muted-light);
            font-size: 17px;
            line-height: 1.95;
            margin-bottom: 30px;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
        .hero-notes {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 28px;
            color: var(--muted);
            font-size: 13px;
        }
        .hero-notes span { display: inline-flex; align-items: center; gap: 7px; }
        .hero-notes i { color: var(--aqua); }
        .hero-stage {
            position: relative;
            min-height: 405px;
            display: grid;
            place-items: center;
        }
        .stage-orbit {
            position: absolute;
            width: 360px;
            height: 360px;
            border: 1px solid rgba(91,124,250,.24);
            border-radius: 50%;
            animation: spin 20s linear infinite;
        }
        .stage-orbit::after {
            content: "";
            position: absolute;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            right: 22px;
            top: 66px;
            background: var(--aqua);
            box-shadow: 0 0 20px var(--aqua);
        }
        .connection-card {
            position: relative;
            z-index: 2;
            width: min(100%, 390px);
            padding: 24px;
            border: 1px solid var(--line-strong);
            border-radius: 28px;
            background: linear-gradient(145deg, rgba(24,44,71,.94), rgba(11,24,41,.92));
            box-shadow: var(--shadow), 0 0 60px rgba(91,124,250,.12);
        }
        .connection-top, .connection-row, .metric-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }
        .connection-top { margin-bottom: 23px; }
        .connection-title { font-weight: 800; font-size: 18px; }
        .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: #77e6d1;
            font-size: 12px;
        }
        .live-dot::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--aqua);
            box-shadow: 0 0 0 5px rgba(67,217,197,.12);
        }
        .route-line {
            position: relative;
            height: 90px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 14px;
            margin-bottom: 22px;
        }
        .route-line::before {
            content: "";
            position: absolute;
            left: 38px;
            right: 38px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--aqua));
            opacity: .8;
        }
        .route-node {
            position: relative;
            z-index: 1;
            width: 49px;
            height: 49px;
            display: grid;
            place-items: center;
            border-radius: 16px;
            color: #fff;
            background: #132d4c;
            border: 1px solid rgba(125,155,255,.45);
            box-shadow: 0 0 0 8px rgba(91,124,250,.06);
        }
        .route-node i { font-size: 18px; }
        .route-label { position: absolute; top: 59px; width: 90px; text-align: center; color: var(--muted); font-size: 12px; }
        .metric-row { padding: 14px 0; border-top: 1px solid var(--line); }
        .metric-label { color: var(--muted); font-size: 12px; }
        .metric-value { font-size: 14px; font-weight: 800; }
        .metric-value.good { color: #71e1ce; }
        .floating-chip {
            position: absolute;
            z-index: 3;
            padding: 12px 14px;
            border-radius: 14px;
            border: 1px solid var(--line-strong);
            background: rgba(15,29,48,.86);
            box-shadow: 0 16px 35px rgba(0,0,0,.25);
            color: var(--muted-light);
            font-size: 12px;
        }
        .floating-chip strong { display: block; color: #fff; font-size: 17px; line-height: 1.2; }
        .chip-one { top: 30px; right: 0; }
        .chip-two { bottom: 23px; left: 5px; }

        .ticker {
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            background: rgba(255,255,255,.025);
            overflow: hidden;
        }
        .ticker-track {
            min-height: 55px;
            display: flex;
            align-items: center;
            gap: 44px;
            white-space: nowrap;
            color: var(--muted);
            font-size: 13px;
            animation: ticker 24s linear infinite;
        }
        .ticker-track span { display: inline-flex; align-items: center; gap: 10px; }
        .ticker-track i { color: var(--aqua); }

        .section { padding: 104px 0; }
        .section.alt { background: rgba(255,255,255,.022); border-top: 1px solid rgba(170,193,221,.06); border-bottom: 1px solid rgba(170,193,221,.06); }
        .section-heading {
            max-width: 720px;
            margin-bottom: 42px;
        }
        .section-heading h2 {
            margin: 13px 0 15px;
            font-size: clamp(30px, 4vw, 47px);
            line-height: 1.17;
            letter-spacing: -.055em;
            font-weight: 820;
        }
        .section-heading p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 0;
        }
        .section-heading.center { text-align: center; margin-left: auto; margin-right: auto; }
        .section-heading.center .section-kicker { justify-content: center; }

        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .feature-card, .info-card, .price-card, .quote-card, .update-item {
            border: 1px solid var(--line);
            background: var(--panel);
            border-radius: var(--radius-md);
            transition: .3s ease;
        }
        .feature-card {
            min-height: 285px;
            padding: 26px;
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: "";
            position: absolute;
            width: 160px;
            height: 160px;
            right: -75px;
            bottom: -90px;
            border-radius: 50%;
            background: rgba(91,124,250,.12);
            transition: .3s ease;
        }
        .feature-card:hover, .info-card:hover, .price-card:hover, .quote-card:hover {
            transform: translateY(-6px);
            border-color: rgba(108,139,255,.48);
            box-shadow: var(--shadow);
        }
        .feature-card:hover::after { transform: scale(1.4); }
        .icon-box {
            width: 49px;
            height: 49px;
            display: grid;
            place-items: center;
            color: #fff;
            font-size: 18px;
            border-radius: 15px;
            background: linear-gradient(145deg, rgba(100,130,255,.95), rgba(65,83,193,.8));
            box-shadow: 0 12px 25px rgba(71,88,205,.26);
        }
        .feature-card h3, .info-card h3, .price-card h3, .quote-card h3 {
            margin: 22px 0 10px;
            font-size: 19px;
            letter-spacing: -.025em;
        }
        .feature-card p, .info-card p, .quote-card p { color: var(--muted); font-size: 14px; line-height: 1.85; margin-bottom: 0; }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            margin-top: 20px;
            color: #aebdff;
            font-size: 13px;
            font-weight: 700;
        }

        .node-layout {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 56px;
            align-items: center;
        }
        .node-map {
            position: relative;
            min-height: 370px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: 30px;
            background:
                linear-gradient(rgba(91,124,250,.09) 1px, transparent 1px),
                linear-gradient(90deg, rgba(91,124,250,.09) 1px, transparent 1px),
                radial-gradient(circle at 50% 50%, rgba(91,124,250,.18), transparent 50%),
                #0c1a2b;
            background-size: 42px 42px, 42px 42px, auto, auto;
        }
        .map-line { position: absolute; height: 1px; background: linear-gradient(90deg, transparent, var(--primary), transparent); transform-origin: left; opacity: .6; }
        .map-line.one { width: 250px; top: 42%; left: 25%; transform: rotate(-20deg); }
        .map-line.two { width: 290px; top: 51%; left: 28%; transform: rotate(18deg); }
        .map-line.three { width: 210px; top: 50%; left: 43%; transform: rotate(-55deg); }
        .map-point {
            position: absolute;
            display: grid;
            place-items: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            color: #fff;
            background: #263e83;
            border: 5px solid rgba(91,124,250,.23);
            box-shadow: 0 0 0 1px rgba(120,147,255,.5), 0 0 28px rgba(91,124,250,.5);
        }
        .map-point::after { content: ""; position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--aqua); }
        .point-a { left: 22%; top: 39%; }
        .point-b { right: 21%; top: 24%; }
        .point-c { right: 18%; bottom: 21%; }
        .point-d { left: 44%; bottom: 15%; }
        .map-label { position: absolute; color: var(--muted-light); font-size: 12px; }
        .label-a { left: 18%; top: 54%; }
        .label-b { right: 16%; top: 39%; }
        .label-c { right: 12%; bottom: 9%; }
        .label-d { left: 39%; bottom: 3%; }
        .node-list { display: grid; gap: 14px; }
        .node-item {
            display: grid;
            grid-template-columns: 42px 1fr auto;
            align-items: center;
            gap: 14px;
            padding: 17px;
            border: 1px solid var(--line);
            border-radius: 16px;
            background: rgba(255,255,255,.035);
        }
        .node-item i { color: var(--aqua); font-size: 16px; }
        .node-item strong { display: block; font-size: 14px; }
        .node-item small { color: var(--muted); font-size: 12px; }
        .node-status { color: #77e6d1; font-size: 12px; }

        .scenario-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; }
        .scenario-feature {
            min-height: 340px;
            padding: 32px;
            border-radius: 25px;
            border: 1px solid var(--line);
            background:
                linear-gradient(135deg, rgba(91,124,250,.18), transparent 55%),
                var(--panel);
        }
        .scenario-feature h3 { font-size: 28px; letter-spacing: -.04em; margin: 20px 0 12px; }
        .scenario-feature p { max-width: 520px; color: var(--muted); line-height: 1.9; }
        .scenario-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
        .tag {
            padding: 7px 11px;
            color: var(--muted-light);
            border: 1px solid var(--line-strong);
            border-radius: 9px;
            background: rgba(255,255,255,.045);
            font-size: 12px;
        }
        .scenario-side { display: grid; gap: 18px; }
        .info-card { padding: 25px; }
        .info-card h3 { margin-top: 0; }

        .stage-layout {
            display: grid;
            grid-template-columns: .75fr 1.25fr;
            gap: 45px;
            align-items: center;
        }
        .preview-window {
            padding: 12px;
            border: 1px solid var(--line-strong);
            border-radius: 24px;
            background: #07101c;
            box-shadow: var(--shadow);
        }
        .window-bar { display: flex; gap: 6px; padding: 5px 6px 13px; }
        .window-bar span { width: 8px; height: 8px; border-radius: 50%; background: #33465d; }
        .preview-window img { width: 100%; border-radius: 15px; opacity: .9; }
        .preview-copy h2 { margin: 14px 0; font-size: clamp(30px, 4vw, 46px); line-height: 1.15; letter-spacing: -.055em; }
        .preview-copy p { color: var(--muted); line-height: 1.9; margin-bottom: 25px; }
        .check-list { display: grid; gap: 12px; margin: 0 0 28px; padding: 0; list-style: none; }
        .check-list li { display: flex; gap: 10px; color: var(--muted-light); font-size: 14px; }
        .check-list i { color: var(--aqua); margin-top: 5px; }

        .trial-box {
            display: grid;
            grid-template-columns: 1fr .85fr;
            gap: 35px;
            padding: 36px;
            border: 1px solid rgba(91,124,250,.36);
            border-radius: 28px;
            background:
                radial-gradient(circle at 90% 10%, rgba(67,217,197,.12), transparent 24rem),
                linear-gradient(135deg, rgba(91,124,250,.17), rgba(255,255,255,.025));
        }
        .trial-box h2 { margin: 14px 0 14px; font-size: clamp(28px, 4vw, 43px); line-height: 1.2; letter-spacing: -.05em; }
        .trial-box p { color: var(--muted-light); line-height: 1.9; }
        .trial-points { display: grid; gap: 11px; align-content: center; }
        .trial-point { display: flex; gap: 12px; align-items: flex-start; padding: 13px 0; border-bottom: 1px solid var(--line); }
        .trial-point:last-child { border-bottom: 0; }
        .trial-point i { color: var(--aqua); margin-top: 5px; }
        .trial-point strong { display: block; font-size: 14px; }
        .trial-point span { color: var(--muted); font-size: 12px; }

        .pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; align-items: stretch; }
        .price-card { padding: 24px 21px; position: relative; }
        .price-card.recommended { border-color: rgba(91,124,250,.65); background: linear-gradient(155deg, rgba(91,124,250,.2), rgba(15,29,48,.86)); }
        .recommend-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            padding: 4px 8px;
            border-radius: 7px;
            color: #08111f;
            background: var(--aqua);
            font-size: 10px;
            font-weight: 800;
        }
        .price-card h3 { margin-top: 0; }
        .price-value { margin: 22px 0 7px; font-size: 34px; font-weight: 850; letter-spacing: -.05em; }
        .price-value small { color: var(--muted); font-size: 12px; font-weight: 400; letter-spacing: 0; }
        .price-note { min-height: 48px; color: var(--muted); font-size: 12px; line-height: 1.65; }
        .price-list { display: grid; gap: 10px; min-height: 115px; margin: 18px 0 22px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); list-style: none; }
        .price-list li { display: flex; gap: 8px; color: var(--muted-light); font-size: 12px; }
        .price-list i { color: var(--aqua); margin-top: 4px; }

        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            border: 1px solid var(--line);
            border-radius: 22px;
            overflow: hidden;
            background: rgba(255,255,255,.03);
        }
        .stat { padding: 27px 20px; text-align: center; border-right: 1px solid var(--line); }
        .stat:last-child { border-right: 0; }
        .stat strong { display: block; font-size: 32px; letter-spacing: -.05em; }
        .stat span { color: var(--muted); font-size: 12px; }

        .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
        .quote-card { padding: 24px; }
        .quote-stars { color: #ffca6a; letter-spacing: 2px; font-size: 13px; }
        .quote-card p { margin: 17px 0 22px; color: var(--muted-light); }
        .quote-user { display: flex; align-items: center; gap: 11px; }
        .avatar { width: 37px; height: 37px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(145deg, #5975e8, #294071); font-size: 13px; font-weight: 800; }
        .quote-user strong { display: block; font-size: 13px; }
        .quote-user span { color: var(--muted); font-size: 11px; }

        .updates-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; }
        .updates-intro h2 { font-size: clamp(29px, 4vw, 44px); line-height: 1.18; letter-spacing: -.055em; margin: 14px 0; }
        .updates-intro p { color: var(--muted); line-height: 1.9; }
        .update-list { display: grid; gap: 12px; }
        .update-item { display: grid; grid-template-columns: 94px 1fr auto; gap: 17px; align-items: center; padding: 19px; }
        .update-date { color: #aebdff; font-size: 12px; font-weight: 800; }
        .update-item strong { display: block; font-size: 14px; }
        .update-item span { color: var(--muted); font-size: 12px; }
        .update-arrow { color: var(--muted); }

        .faq-list { max-width: 850px; margin: 0 auto; display: grid; gap: 10px; }
        .faq-item { border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.03); overflow: hidden; }
        .faq-item summary { padding: 19px 21px; color: var(--muted-light); font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after { content: "+"; color: var(--aqua); font-size: 20px; line-height: 1; }
        .faq-item[open] summary::after { content: "−"; }
        .faq-answer { padding: 0 21px 20px; color: var(--muted); font-size: 14px; line-height: 1.85; }

        .final-cta {
            padding: 92px 0;
            background:
                radial-gradient(circle at 50% 0%, rgba(91,124,250,.24), transparent 30rem),
                #07101c;
            border-top: 1px solid var(--line);
        }
        .cta-inner { max-width: 750px; margin: 0 auto; text-align: center; }
        .cta-inner h2 { margin: 15px 0; font-size: clamp(32px, 5vw, 55px); line-height: 1.12; letter-spacing: -.06em; }
        .cta-inner p { color: var(--muted-light); font-size: 16px; line-height: 1.9; margin-bottom: 28px; }

        .site-footer { padding: 45px 0 25px; border-top: 1px solid var(--line); background: var(--bg-deep); }
        .footer-top { display: flex; justify-content: space-between; gap: 35px; padding-bottom: 35px; }
        .footer-brand { max-width: 330px; }
        .footer-brand p { color: var(--muted); font-size: 13px; line-height: 1.8; margin-top: 17px; }
        .footer-links { display: flex; flex-wrap: wrap; gap: 45px; }
        .footer-column strong { display: block; margin-bottom: 12px; font-size: 13px; }
        .footer-column a { display: block; margin: 7px 0; color: var(--muted); font-size: 12px; transition: .2s ease; }
        .footer-column a:hover { color: #fff; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid var(--line); color: #718197; font-size: 11px; }
        .socials { display: flex; gap: 9px; }
        .socials a { width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); }
        .socials a:hover { color: #fff; border-color: var(--primary); background: rgba(91,124,250,.14); }

        @keyframes spin { to { transform: rotate(360deg); } }
        @keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-35%); } }

        @media (max-width: 1024px) {
            .desktop-nav { gap: 0; }
            .nav-link { padding-left: 9px; padding-right: 9px; }
            .hero-grid, .node-layout, .stage-layout, .updates-layout { gap: 32px; }
            .pricing-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .site-container { width: min(100% - 30px, 600px); }
            .nav-wrap { min-height: 68px; }
            .desktop-nav, .nav-actions { display: none; }
            .mobile-toggle { display: block; margin-left: auto; }
            .hero { padding: 65px 0 55px; }
            .hero-grid, .node-layout, .stage-layout, .scenario-grid, .trial-box, .updates-layout { grid-template-columns: 1fr; }
            .hero-stage { min-height: 380px; }
            h1 { font-size: clamp(40px, 12vw, 62px); }
            .section { padding: 72px 0; }
            .feature-grid, .quote-grid { grid-template-columns: 1fr; }
            .feature-card { min-height: auto; }
            .node-map { min-height: 320px; }
            .stats-strip { grid-template-columns: repeat(2, 1fr); }
            .stat:nth-child(2) { border-right: 0; }
            .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
            .trial-box { padding: 26px; }
            .footer-top { flex-direction: column; }
            .footer-links { gap: 26px; }
        }
        @media (max-width: 520px) {
            .site-container { width: calc(100% - 26px); }
            .brand { font-size: 14px; }
            .brand-mark { width: 31px; height: 31px; }
            .hero-copy { font-size: 15px; }
            .hero-actions .btn { width: 100%; }
            .hero-stage { min-height: 330px; transform: scale(.94); margin: -10px -15px; }
            .stage-orbit { width: 300px; height: 300px; }
            .connection-card { padding: 19px; }
            .floating-chip { transform: scale(.9); }
            .chip-one { right: -6px; }
            .chip-two { left: -7px; }
            .pricing-grid { grid-template-columns: 1fr; }
            .stats-strip { grid-template-columns: 1fr 1fr; }
            .stat { padding: 20px 10px; }
            .stat strong { font-size: 26px; }
            .update-item { grid-template-columns: 1fr auto; }
            .update-date { grid-column: 1 / -1; }
            .footer-links { display: grid; grid-template-columns: 1fr 1fr; }
            .footer-bottom { flex-direction: column; }
        }