/* roulang page: index */
:root {
            --ink: #10213f;
            --ink-deep: #08152d;
            --muted: #66738c;
            --soft: #f4f7fb;
            --line: #e6ebf3;
            --white: #ffffff;
            --primary: #315de9;
            --primary-dark: #2347c5;
            --cyan: #29b8db;
            --green: #25a979;
            --orange: #e99a3e;
            --shadow: 0 18px 55px rgba(29, 54, 101, .10);
            --shadow-hover: 0 24px 65px rgba(31, 68, 148, .18);
            --radius-xl: 30px;
            --radius-lg: 22px;
            --radius-md: 16px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: "Noto Sans SC", "Manrope", sans-serif;
            color: var(--ink);
            background: var(--white);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input, select { font: inherit; }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
            outline: 3px solid rgba(49, 93, 233, .28);
            outline-offset: 3px;
        }
        .container { max-width: 1180px; }
        .section { padding: 106px 0; }
        .section-soft { background: var(--soft); }
        .section-blue { background: #eff4ff; }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: .78rem;
            font-weight: 800;
            letter-spacing: .13em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .eyebrow i { font-size: .62rem; }
        .section-title {
            margin: 0;
            font-size: clamp(2rem, 4vw, 3.25rem);
            letter-spacing: -.045em;
            line-height: 1.2;
            font-weight: 800;
        }
        .section-lead {
            max-width: 720px;
            color: var(--muted);
            font-size: 1.04rem;
            margin: 18px 0 0;
        }
        .text-gradient {
            background: linear-gradient(100deg, #315de9 5%, #20a9ca 95%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,.88);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226,232,242,.82);
        }
        .navbar { min-height: 78px; }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            font-size: 1.14rem;
            font-weight: 800;
            letter-spacing: -.025em;
            white-space: nowrap;
        }
        .brand-mark {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            border-radius: 13px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            box-shadow: 0 10px 22px rgba(49,93,233,.25);
        }
        .nav-link {
            color: #65718a !important;
            font-size: .93rem;
            font-weight: 600;
            padding: 10px 15px !important;
            border-radius: 10px;
            transition: .25s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary) !important;
            background: #eff4ff;
        }
        .btn-primary-custom, .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            border-radius: 12px;
            padding: 13px 21px;
            font-size: .94rem;
            font-weight: 700;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
        }
        .btn-primary-custom {
            color: #fff;
            background: var(--primary);
            border: 1px solid var(--primary);
            box-shadow: 0 12px 25px rgba(49,93,233,.23);
        }
        .btn-primary-custom:hover {
            color: #fff;
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 16px 30px rgba(49,93,233,.31);
        }
        .btn-outline-custom {
            color: var(--ink);
            background: #fff;
            border: 1px solid #d8e0ee;
        }
        .btn-outline-custom:hover {
            color: var(--primary);
            border-color: #aebfe8;
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(29,54,101,.09);
        }
        .btn-small { padding: 10px 16px; font-size: .86rem; }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 88px 0 92px;
            background:
                radial-gradient(circle at 8% 18%, rgba(49,93,233,.08), transparent 29%),
                radial-gradient(circle at 86% 12%, rgba(41,184,219,.10), transparent 25%),
                #fbfdff;
        }
        .hero:after {
            content: "";
            position: absolute;
            width: 430px;
            height: 430px;
            border: 1px solid rgba(49,93,233,.10);
            border-radius: 50%;
            right: -150px;
            bottom: -235px;
        }
        .hero-content { position: relative; z-index: 1; }
        .hero h1 {
            max-width: 680px;
            font-size: clamp(2.8rem, 6vw, 5.4rem);
            line-height: 1.08;
            letter-spacing: -.07em;
            margin: 0 0 24px;
            font-weight: 800;
        }
        .hero-copy {
            max-width: 665px;
            color: var(--muted);
            font-size: 1.08rem;
            margin-bottom: 30px;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
        .hero-note {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 26px;
            color: #72809a;
            font-size: .84rem;
        }
        .hero-note span { display: inline-flex; align-items: center; gap: 7px; }
        .hero-note i { color: var(--green); }
        .hero-panel {
            position: relative;
            min-height: 420px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--ink-deep);
        }
        .hero-panel img {
            width: 100%;
            height: 100%;
            min-height: 420px;
            object-fit: cover;
            opacity: .74;
        }
        .hero-panel:after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7,25,60,.15), rgba(9,23,49,.86));
        }
        .signal-card {
            position: absolute;
            left: 25px;
            right: 25px;
            bottom: 24px;
            z-index: 2;
            padding: 22px;
            border-radius: 19px;
            color: #fff;
            background: rgba(11,29,63,.76);
            border: 1px solid rgba(255,255,255,.18);
            backdrop-filter: blur(13px);
        }
        .signal-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 19px; }
        .signal-title { font-weight: 700; }
        .status-dot {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: #7ff0c0;
            font-size: .8rem;
        }
        .status-dot:before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #55e8a9;
            box-shadow: 0 0 0 5px rgba(85,232,169,.12);
        }
        .signal-line {
            height: 70px;
            display: flex;
            align-items: end;
            gap: 6px;
            padding: 0 2px;
        }
        .signal-line span {
            flex: 1;
            min-width: 4px;
            border-radius: 5px 5px 0 0;
            background: linear-gradient(to top, #2e67ef, #50d0db);
            opacity: .92;
        }
        .signal-meta { display:flex; justify-content:space-between; margin-top: 13px; color: #aebbd2; font-size: .78rem; }

        .ticker {
            background: var(--ink-deep);
            color: #d6e2ff;
            overflow: hidden;
            border-top: 1px solid rgba(255,255,255,.06);
            border-bottom: 1px solid rgba(255,255,255,.06);
        }
        .ticker-track {
            display: flex;
            gap: 54px;
            white-space: nowrap;
            padding: 14px 0;
            animation: ticker 27s linear infinite;
            font-size: .82rem;
        }
        .ticker-item { display: inline-flex; align-items: center; gap: 10px; }
        .ticker-item i { color: var(--cyan); }
        @keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-35%); } }

        .pain-list { margin-top: 38px; }
        .pain-item {
            display: grid;
            grid-template-columns: 54px 1fr 170px;
            align-items: center;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--line);
        }
        .pain-item:first-child { border-top: 1px solid var(--line); }
        .pain-num {
            color: var(--primary);
            font-family: "Manrope", sans-serif;
            font-size: 1.35rem;
            font-weight: 800;
        }
        .pain-item h3 { font-size: 1.08rem; margin: 0 0 5px; }
        .pain-item p { color: var(--muted); margin: 0; font-size: .9rem; }
        .pain-fix { color: var(--green); font-size: .87rem; font-weight: 700; text-align: right; }

        .solution-wrap {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 58px;
            align-items: center;
        }
        .solution-visual {
            position: relative;
            min-height: 405px;
            padding: 28px;
            border-radius: var(--radius-xl);
            background: #0c1d3c;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .solution-visual:before {
            content: "";
            position: absolute;
            width: 330px;
            height: 330px;
            border: 1px solid rgba(74,157,255,.28);
            border-radius: 50%;
            left: 50%;
            top: 50%;
            transform: translate(-50%,-50%);
            box-shadow: 0 0 0 48px rgba(49,93,233,.08), 0 0 0 100px rgba(49,93,233,.035);
        }
        .node-core {
            position: absolute;
            top: 50%;
            left: 50%;
            z-index: 2;
            width: 102px;
            height: 102px;
            display: grid;
            place-items: center;
            transform: translate(-50%, -50%);
            border-radius: 50%;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            box-shadow: 0 0 0 12px rgba(49,93,233,.18), 0 18px 34px rgba(0,0,0,.28);
            font-size: 1.6rem;
        }
        .node-label {
            position: absolute;
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #c9d7f2;
            font-size: .76rem;
            background: rgba(255,255,255,.08);
            border: 1px solid rgba(255,255,255,.12);
            border-radius: 30px;
            padding: 9px 12px;
        }
        .node-label i { color: #64d5e3; }
        .node-a { top: 37px; left: 33px; }
        .node-b { top: 45px; right: 27px; }
        .node-c { bottom: 40px; left: 57px; }
        .node-d { bottom: 36px; right: 37px; }
        .solution-points { margin: 32px 0 0; padding: 0; list-style: none; }
        .solution-points li { display: flex; gap: 13px; margin: 17px 0; color: #55637d; }
        .solution-points i { color: var(--primary); margin-top: 5px; }

        .scene-grid {
            display: grid;
            grid-template-columns: 1.3fr .7fr;
            gap: 22px;
            margin-top: 42px;
        }
        .scene-feature, .scene-mini {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .scene-feature {
            min-height: 360px;
            position: relative;
            color: #fff;
            background: #112a58;
        }
        .scene-feature img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; opacity: .66; }
        .scene-feature:after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(6,20,49,.88), rgba(7,27,64,.05));
        }
        .scene-content { position: absolute; z-index: 2; left: 30px; right: 30px; bottom: 27px; }
        .scene-content h3 { font-size: 1.5rem; margin: 0 0 8px; }
        .scene-content p { color: #d3def2; margin: 0; max-width: 560px; }
        .scene-side { display: grid; gap: 22px; }
        .scene-mini {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 169px;
            padding: 24px;
            background: #fff;
            border: 1px solid var(--line);
        }
        .scene-mini i { color: var(--primary); font-size: 1.4rem; }
        .scene-mini h3 { font-size: 1.04rem; margin: 15px 0 5px; }
        .scene-mini p { color: var(--muted); font-size: .84rem; margin: 0; }

        .metric-band { background: var(--ink-deep); color: #fff; }
        .metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric {
            padding: 24px 20px;
            border-left: 1px solid rgba(255,255,255,.14);
        }
        .metric:first-child { border-left: 0; }
        .metric strong {
            display: block;
            font-family: "Manrope", sans-serif;
            font-size: 2.45rem;
            letter-spacing: -.06em;
            color: #fff;
        }
        .metric span { color: #aebbd2; font-size: .88rem; }

        .node-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 19px;
            margin-top: 42px;
        }
        .node-card {
            padding: 26px;
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: 0 8px 27px rgba(29,54,101,.045);
            transition: .28s ease;
        }
        .node-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: #c7d5f6; }
        .node-card-top { display:flex; justify-content:space-between; align-items:center; margin-bottom: 22px; }
        .node-icon {
            width: 45px; height: 45px; display:grid; place-items:center; border-radius: 14px;
            color: var(--primary); background: #edf3ff; font-size: 1.1rem;
        }
        .node-badge { color: var(--green); background:#eaf9f2; font-size:.73rem; font-weight:700; padding:5px 9px; border-radius:20px; }
        .node-card h3 { font-size: 1.12rem; margin: 0 0 8px; }
        .node-card p { color: var(--muted); font-size: .86rem; margin: 0; }
        .node-bar { height: 6px; border-radius: 8px; margin-top: 20px; background: #edf0f6; overflow: hidden; }
        .node-bar span { display:block; height:100%; border-radius:inherit; background: linear-gradient(90deg, var(--primary), var(--cyan)); }

        .compare-table {
            margin-top: 42px;
            overflow: hidden;
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
        }
        .compare-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            border-bottom: 1px solid var(--line);
        }
        .compare-row:last-child { border-bottom: 0; }
        .compare-row > div { padding: 18px 23px; font-size: .9rem; }
        .compare-row > div + div { border-left: 1px solid var(--line); }
        .compare-head { background: #f8faff; font-weight: 800; color: var(--ink); }
        .compare-head > div:nth-child(2) { color: var(--primary); }
        .check { color: var(--green); margin-right: 7px; }

        .timeline {
            position: relative;
            margin-top: 50px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .timeline:before {
            content: "";
            position: absolute;
            top: 21px;
            left: 8%;
            right: 8%;
            height: 1px;
            background: #cbd8f2;
        }
        .milestone { position: relative; z-index:1; }
        .milestone-dot {
            width: 43px; height: 43px; display:grid; place-items:center;
            margin-bottom: 20px; border-radius: 50%; color:#fff;
            background: var(--primary); border: 7px solid #eff4ff;
            box-shadow: 0 0 0 1px #abc0ee;
            font-size: .78rem; font-weight:800;
        }
        .milestone h3 { font-size: 1.02rem; margin-bottom: 7px; }
        .milestone p { color: var(--muted); font-size: .85rem; margin:0; }

        .quote-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:20px; margin-top:42px; }
        .quote-card {
            padding: 27px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background:#fff;
            box-shadow: 0 8px 26px rgba(29,54,101,.045);
        }
        .stars { color:#f1a33c; font-size:.8rem; letter-spacing: 2px; }
        .quote-card blockquote { margin: 18px 0 23px; font-size: .93rem; line-height:1.8; color:#46536d; }
        .quote-person { display:flex; align-items:center; gap:11px; }
        .avatar { width:38px; height:38px; display:grid; place-items:center; border-radius:50%; color:var(--primary); background:#edf3ff; font-weight:800; }
        .quote-person strong { display:block; font-size:.87rem; }
        .quote-person small { color:#8a95a9; }

        .updates-layout { display:grid; grid-template-columns: .8fr 1.2fr; gap:52px; align-items:start; }
        .update-list { margin-top: 4px; }
        .update-item { display:grid; grid-template-columns:100px 1fr; gap:22px; padding: 21px 0; border-bottom:1px solid var(--line); }
        .update-date { color:var(--primary); font-family:"Manrope",sans-serif; font-size:.82rem; font-weight:800; }
        .update-item h3 { margin:0 0 5px; font-size:1rem; }
        .update-item p { color:var(--muted); font-size:.85rem; margin:0; }

        .pricing-grid { display:grid; grid-template-columns: repeat(4, 1fr); gap:16px; margin-top:42px; }
        .price-card {
            position: relative;
            padding: 27px 23px;
            border:1px solid var(--line);
            border-radius:var(--radius-lg);
            background:#fff;
            transition:.28s ease;
        }
        .price-card:hover { transform:translateY(-5px); box-shadow:var(--shadow-hover); }
        .price-card.featured { border:2px solid var(--primary); box-shadow: 0 15px 37px rgba(49,93,233,.14); }
        .popular { position:absolute; top:-13px; right:18px; padding:5px 11px; border-radius:20px; color:#fff; background:var(--primary); font-size:.7rem; font-weight:800; }
        .price-card h3 { font-size:1.05rem; margin:0; }
        .price { margin:19px 0 5px; font-family:"Manrope",sans-serif; font-weight:800; font-size:2rem; letter-spacing:-.06em; }
        .price small { font-family:"Noto Sans SC"; font-size:.8rem; color:var(--muted); letter-spacing:0; font-weight:500; }
        .price-note { color:var(--muted); font-size:.78rem; min-height:42px; }
        .price-card ul { list-style:none; margin:23px 0; padding:0; color:#5e6b83; font-size:.82rem; }
        .price-card li { margin:11px 0; }
        .price-card li i { color:var(--green); margin-right:7px; }

        .assurance {
            display:grid;
            grid-template-columns: repeat(4, 1fr);
            gap:15px;
            margin-top: 39px;
        }
        .assurance-item {
            display:flex; gap:13px; align-items:flex-start;
            padding:22px 20px; border-radius:17px; background:#fff; border:1px solid var(--line);
        }
        .assurance-item i { color:var(--primary); font-size:1.25rem; margin-top:4px; }
        .assurance-item h3 { font-size:.94rem; margin:0 0 5px; }
        .assurance-item p { color:var(--muted); font-size:.79rem; margin:0; line-height:1.6; }

        .faq-list { max-width: 880px; margin: 40px auto 0; }
        .accordion-item { margin-bottom:12px; border:1px solid var(--line) !important; border-radius:15px !important; overflow:hidden; }
        .accordion-button { padding:20px 22px; color:var(--ink); background:#fff; font-weight:700; box-shadow:none !important; }
        .accordion-button:not(.collapsed) { color:var(--primary); background:#f5f8ff; }
        .accordion-body { padding:0 22px 21px; color:var(--muted); font-size:.91rem; background:#f5f8ff; }

        .lead-section {
            padding: 92px 0;
            background: linear-gradient(135deg, #eef4ff 0%, #f8fbff 52%, #e9f8fb 100%);
        }
        .lead-box {
            display:grid;
            grid-template-columns: 1fr .9fr;
            gap:65px;
            align-items:center;
        }
        .lead-box h2 { font-size:clamp(2rem,4vw,3.2rem); line-height:1.2; letter-spacing:-.05em; margin:0 0 17px; }
        .lead-box p { color:var(--muted); max-width:580px; }
        .lead-form {
            padding:28px;
            background:#fff;
            border:1px solid rgba(196,211,238,.8);
            border-radius:var(--radius-lg);
            box-shadow:var(--shadow);
        }
        .form-label { color:#53617a; font-size:.84rem; font-weight:700; margin-bottom:7px; }
        .form-control, .form-select {
            min-height:48px;
            border:1px solid #dce4f1;
            border-radius:11px;
            color:var(--ink);
            font-size:.88rem;
        }
        .form-control:focus, .form-select:focus { border-color:#8da9ee; box-shadow:0 0 0 .22rem rgba(49,93,233,.1); }
        .form-tip { color:#8591a5; font-size:.76rem; margin-top:13px; }
        .form-success { display:none; color:var(--green); font-size:.85rem; margin-top:13px; }

        .site-footer { color:#afbdd4; background:var(--ink-deep); padding:58px 0 24px; }
        .footer-main { display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:40px; padding-bottom:48px; }
        .footer-brand { color:#fff; margin-bottom:16px; }
        .footer-desc { max-width:330px; color:#99a9c4; font-size:.86rem; }
        .footer-title { color:#fff; font-size:.88rem; margin-bottom:16px; }
        .footer-links { list-style:none; margin:0; padding:0; }
        .footer-links li { margin:9px 0; }
        .footer-links a { color:#99a9c4; font-size:.83rem; transition:.2s ease; }
        .footer-links a:hover { color:#fff; }
        .footer-bottom { display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; padding-top:22px; border-top:1px solid rgba(255,255,255,.1); color:#8596b2; font-size:.77rem; }
        .footer-disclaimer { max-width:690px; }

        @media (max-width: 991px) {
            .section { padding:82px 0; }
            .navbar-collapse { padding:14px 0 8px; }
            .hero { padding:70px 0 75px; }
            .hero-panel { margin-top:38px; }
            .solution-wrap, .updates-layout, .lead-box { grid-template-columns:1fr; gap:35px; }
            .node-grid, .quote-grid { grid-template-columns: repeat(2, 1fr); }
            .pricing-grid { grid-template-columns: repeat(2, 1fr); }
            .assurance { grid-template-columns: repeat(2, 1fr); }
            .footer-main { grid-template-columns: 1.4fr 1fr 1fr; }
        }
        @media (max-width: 767px) {
            .section { padding:68px 0; }
            .hero h1 { font-size:clamp(2.55rem, 13vw, 4.2rem); }
            .hero-copy { font-size:1rem; }
            .hero-panel, .hero-panel img { min-height:340px; }
            .pain-item { grid-template-columns:42px 1fr; gap:13px; }
            .pain-fix { grid-column:2; text-align:left; }
            .scene-grid { grid-template-columns:1fr; }
            .metrics { grid-template-columns: repeat(2,1fr); }
            .metric { border-left:0; border-bottom:1px solid rgba(255,255,255,.12); }
            .metric strong { font-size:2rem; }
            .timeline { grid-template-columns:repeat(2,1fr); gap:30px 20px; }
            .timeline:before { display:none; }
            .compare-row > div { padding:14px 12px; font-size:.78rem; }
            .compare-row { grid-template-columns:1.1fr 1fr 1fr; }
            .footer-main { grid-template-columns:1fr 1fr; gap:28px; }
        }
        @media (max-width: 520px) {
            .container { width: min(100% - 30px, 1180px); }
            .brand { font-size:1rem; }
            .brand-mark { width:34px; height:34px; }
            .hero-actions .btn-primary-custom, .hero-actions .btn-outline-custom { width:100%; }
            .hero-note { display:block; }
            .hero-note span { margin:5px 12px 5px 0; }
            .signal-card { left:15px; right:15px; bottom:15px; padding:17px; }
            .node-grid, .quote-grid, .pricing-grid, .assurance { grid-template-columns:1fr; }
            .metrics { grid-template-columns:1fr 1fr; }
            .metric { padding:18px 12px; }
            .metric strong { font-size:1.65rem; }
            .timeline { grid-template-columns:1fr; }
            .update-item { grid-template-columns:1fr; gap:4px; }
            .footer-main { grid-template-columns:1fr; }
            .footer-bottom { flex-direction:column; }
            .solution-visual { min-height:350px; }
            .node-label { font-size:.67rem; padding:7px 9px; }
            .node-a { left:13px; }
            .node-b { right:12px; }
            .node-c { left:23px; }
            .node-d { right:18px; }
        }

/* roulang page: category1 */
:root {
            --ink:#10213f;
            --ink-deep:#08152d;
            --muted:#66738c;
            --soft:#f4f7fb;
            --line:#e6ebf3;
            --white:#fff;
            --primary:#315de9;
            --primary-dark:#2347c5;
            --cyan:#29b8db;
            --green:#25a979;
            --orange:#e99a3e;
            --shadow:0 18px 55px rgba(29,54,101,.10);
            --shadow-hover:0 24px 65px rgba(31,68,148,.18);
            --radius-xl:30px;
            --radius-lg:22px;
            --radius-md:16px;
        }
        html{scroll-behavior:smooth}
        body{
            margin:0;
            color:var(--ink);
            background:var(--white);
            font-family:"Noto Sans SC","Manrope",sans-serif;
            line-height:1.75;
            -webkit-font-smoothing:antialiased;
        }
        *,*:before,*:after{box-sizing:border-box}
        a{color:inherit;text-decoration:none}
        img{max-width:100%;display:block}
        button,input,select,textarea{font:inherit}
        button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
            outline:3px solid rgba(49,93,233,.28);
            outline-offset:3px;
        }
        .container{max-width:1180px}
        .site-header{
            position:sticky;
            top:0;
            z-index:1000;
            background:rgba(255,255,255,.9);
            backdrop-filter:blur(18px);
            border-bottom:1px solid rgba(226,232,242,.84);
        }
        .navbar{min-height:78px}
        .brand{
            display:inline-flex;
            align-items:center;
            gap:11px;
            font-size:1.14rem;
            font-weight:800;
            letter-spacing:-.025em;
            white-space:nowrap;
        }
        .brand-mark{
            width:38px;
            height:38px;
            display:grid;
            place-items:center;
            border-radius:13px;
            color:#fff;
            background:linear-gradient(135deg,var(--primary),var(--cyan));
            box-shadow:0 10px 22px rgba(49,93,233,.25);
        }
        .nav-link{
            color:#65718a!important;
            font-size:.93rem;
            font-weight:600;
            padding:10px 15px!important;
            border-radius:10px;
            transition:.25s ease;
        }
        .nav-link:hover,.nav-link.active{
            color:var(--primary)!important;
            background:#eff4ff;
        }
        .btn-primary-custom,.btn-outline-custom{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            gap:9px;
            border-radius:12px;
            padding:13px 21px;
            font-size:.94rem;
            font-weight:700;
            transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
        }
        .btn-primary-custom{
            color:#fff;
            background:var(--primary);
            border:1px solid var(--primary);
            box-shadow:0 12px 25px rgba(49,93,233,.23);
        }
        .btn-primary-custom:hover{
            color:#fff;
            background:var(--primary-dark);
            transform:translateY(-2px);
            box-shadow:0 16px 30px rgba(49,93,233,.31);
        }
        .btn-outline-custom{
            color:var(--ink);
            background:#fff;
            border:1px solid #d8e0ee;
        }
        .btn-outline-custom:hover{
            color:var(--primary);
            border-color:#aebfe8;
            transform:translateY(-2px);
            box-shadow:0 10px 22px rgba(29,54,101,.09);
        }
        .btn-small{padding:10px 16px;font-size:.86rem}
        .section{padding:100px 0}
        .section-soft{background:var(--soft)}
        .section-blue{background:#eff4ff}
        .eyebrow{
            display:inline-flex;
            align-items:center;
            gap:8px;
            color:var(--primary);
            font-size:.78rem;
            font-weight:800;
            letter-spacing:.13em;
            margin-bottom:16px;
        }
        .eyebrow i{font-size:.62rem}
        .section-title{
            margin:0;
            font-size:clamp(2rem,4vw,3.25rem);
            letter-spacing:-.045em;
            line-height:1.2;
            font-weight:800;
        }
        .section-lead{
            max-width:720px;
            color:var(--muted);
            font-size:1.04rem;
            margin:18px 0 0;
        }
        .text-gradient{
            background:linear-gradient(100deg,#315de9 5%,#20a9ca 95%);
            -webkit-background-clip:text;
            background-clip:text;
            color:transparent;
        }
        .page-hero{
            position:relative;
            overflow:hidden;
            padding:90px 0 82px;
            background:
                radial-gradient(circle at 6% 12%,rgba(49,93,233,.11),transparent 28%),
                radial-gradient(circle at 94% 20%,rgba(41,184,219,.12),transparent 25%),
                #fbfdff;
        }
        .page-hero:after{
            content:"";
            position:absolute;
            width:480px;
            height:480px;
            border:1px solid rgba(49,93,233,.11);
            border-radius:50%;
            right:-215px;
            bottom:-275px;
        }
        .hero-copy{position:relative;z-index:1}
        .hero-copy h1{
            max-width:760px;
            margin:0 0 22px;
            font-size:clamp(2.65rem,5vw,5rem);
            line-height:1.1;
            letter-spacing:-.07em;
            font-weight:800;
        }
        .hero-copy p{
            max-width:700px;
            color:var(--muted);
            font-size:1.08rem;
            margin:0 0 30px;
        }
        .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
        .route-board{
            position:relative;
            z-index:1;
            padding:25px;
            min-height:350px;
            border:1px solid rgba(49,93,233,.12);
            border-radius:var(--radius-xl);
            background:#fff;
            box-shadow:var(--shadow);
        }
        .board-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}
        .board-title{font-size:.9rem;font-weight:800;color:var(--ink)}
        .live-dot{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:.76rem;font-weight:700}
        .live-dot:before{
            content:"";
            width:8px;height:8px;border-radius:50%;
            background:var(--green);
            box-shadow:0 0 0 5px rgba(37,169,121,.12);
        }
        .route-map{
            position:relative;
            height:178px;
            overflow:hidden;
            border-radius:20px;
            background:
                linear-gradient(135deg,rgba(49,93,233,.09) 25%,transparent 25%) 0 0/34px 34px,
                linear-gradient(315deg,rgba(41,184,219,.08) 25%,transparent 25%) 0 0/34px 34px,
                #f4f7ff;
        }
        .route-line{position:absolute;height:2px;background:linear-gradient(90deg,var(--primary),var(--cyan));transform-origin:left center;opacity:.75}
        .line-one{width:150px;left:20%;top:55%;transform:rotate(-20deg)}
        .line-two{width:150px;left:50%;top:47%;transform:rotate(26deg)}
        .line-three{width:110px;left:55%;top:67%;transform:rotate(-32deg)}
        .route-node{
            position:absolute;
            width:13px;height:13px;
            border-radius:50%;
            background:var(--primary);
            border:3px solid #fff;
            box-shadow:0 0 0 6px rgba(49,93,233,.14);
        }
        .node-a{left:18%;top:52%}.node-b{left:48%;top:39%}.node-c{left:76%;top:56%}.node-d{left:52%;top:75%}
        .board-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
        .board-stat{padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fbfcff}
        .board-stat strong{display:block;font-size:1.15rem;letter-spacing:-.04em}
        .board-stat span{color:var(--muted);font-size:.75rem}
        .metric-strip{padding:23px 0;border-bottom:1px solid var(--line);background:#fff}
        .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .metric{display:flex;align-items:center;gap:14px;padding:8px 16px;border-right:1px solid var(--line)}
        .metric:last-child{border-right:0}
        .metric i{font-size:1.35rem;color:var(--primary)}
        .metric strong{display:block;font-size:1.45rem;line-height:1.2}
        .metric span{display:block;color:var(--muted);font-size:.8rem}
        .split-heading{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:45px}
        .split-heading .section-lead{margin-top:0}
        .service-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:25px}
        .service-card{
            height:100%;
            padding:32px;
            border:1px solid var(--line);
            border-radius:var(--radius-lg);
            background:#fff;
            box-shadow:0 10px 35px rgba(29,54,101,.06);
            transition:.3s ease;
        }
        .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#c9d7f5}
        .service-icon{
            width:52px;height:52px;
            display:grid;place-items:center;
            margin-bottom:22px;
            border-radius:17px;
            color:var(--primary);
            background:#edf2ff;
            font-size:1.2rem;
        }
        .service-card h3{font-size:1.3rem;margin:0 0 11px;letter-spacing:-.03em}
        .service-card p{margin:0;color:var(--muted);font-size:.94rem}
        .service-list{list-style:none;padding:0;margin:25px 0 0}
        .service-list li{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--line);font-size:.9rem}
        .service-list i{margin-top:6px;color:var(--green)}
        .plan-card{
            position:relative;
            height:100%;
            padding:28px 25px;
            border:1px solid var(--line);
            border-radius:var(--radius-lg);
            background:#fff;
            transition:.3s ease;
        }
        .plan-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#bfd0f2}
        .plan-card.featured{border:2px solid var(--primary);box-shadow:0 17px 42px rgba(49,93,233,.14)}
        .plan-badge{
            position:absolute;
            top:18px;right:18px;
            padding:4px 9px;
            border-radius:30px;
            color:var(--primary);
            background:#eaf0ff;
            font-size:.7rem;
            font-weight:800;
        }
        .plan-name{font-size:1.1rem;font-weight:800;margin-bottom:13px}
        .plan-price{font-family:"Manrope",sans-serif;font-size:2.25rem;font-weight:800;letter-spacing:-.06em}
        .plan-price small{font-family:"Noto Sans SC";font-size:.84rem;color:var(--muted);font-weight:500;letter-spacing:0}
        .plan-desc{min-height:54px;margin:10px 0 20px;color:var(--muted);font-size:.84rem}
        .plan-card .btn-primary-custom,.plan-card .btn-outline-custom{width:100%}
        .compare-wrap{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow)}
        .compare-row{display:grid;grid-template-columns:1.3fr repeat(3,1fr);border-bottom:1px solid var(--line)}
        .compare-row:last-child{border-bottom:0}
        .compare-row>div{padding:17px 20px;font-size:.9rem;border-right:1px solid var(--line)}
        .compare-row>div:last-child{border-right:0}
        .compare-head{font-weight:800;background:#f5f8ff}
        .compare-row:not(.compare-head)>div:not(:first-child){color:var(--muted);text-align:center}
        .check{color:var(--green);font-weight:800}
        .milestone-list{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
        .milestone-list:before{content:"";position:absolute;left:8%;right:8%;top:25px;height:1px;background:#cdd9f1}
        .milestone{position:relative;z-index:1}
        .milestone-dot{width:50px;height:50px;display:grid;place-items:center;margin-bottom:18px;border:7px solid #eff4ff;border-radius:50%;color:#fff;background:var(--primary);font-size:.85rem;font-weight:800}
        .milestone:nth-child(2) .milestone-dot{background:var(--cyan)}
        .milestone:nth-child(3) .milestone-dot{background:var(--green)}
        .milestone:nth-child(4) .milestone-dot{background:var(--orange)}
        .milestone h3{font-size:1rem;margin:0 0 8px}
        .milestone p{margin:0;color:var(--muted);font-size:.86rem}
        .news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
        .news-main,.news-item{
            border:1px solid var(--line);
            border-radius:var(--radius-lg);
            background:#fff;
            transition:.3s ease;
        }
        .news-main:hover,.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
        .news-main{padding:30px}
        .news-label{color:var(--primary);font-size:.76rem;font-weight:800;letter-spacing:.1em}
        .news-main h3{max-width:620px;margin:14px 0;font-size:1.7rem;line-height:1.35;letter-spacing:-.04em}
        .news-main p,.news-item p{margin:0;color:var(--muted);font-size:.9rem}
        .news-side{display:grid;gap:14px}
        .news-item{padding:21px}
        .news-item h3{font-size:1rem;line-height:1.5;margin:8px 0}
        .news-date{color:#8793a8;font-size:.77rem}
        .security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
        .security-card{padding:25px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line)}
        .security-card i{color:var(--primary);font-size:1.25rem;margin-bottom:18px}
        .security-card h3{font-size:1.05rem;margin:0 0 8px}
        .security-card p{color:var(--muted);font-size:.87rem;margin:0}
        .faq-wrap{max-width:900px;margin:0 auto}
        .accordion-item{border:1px solid var(--line)!important;border-radius:15px!important;overflow:hidden;margin-bottom:12px;background:#fff}
        .accordion-button{padding:20px 22px;color:var(--ink);font-weight:700;background:#fff;box-shadow:none!important}
        .accordion-button:not(.collapsed){color:var(--primary);background:#f7f9ff}
        .accordion-body{padding:0 22px 21px;color:var(--muted);font-size:.92rem}
        .cta-panel{
            position:relative;
            overflow:hidden;
            padding:54px;
            border-radius:var(--radius-xl);
            background:linear-gradient(125deg,#10285a,#315de9);
            color:#fff;
            box-shadow:0 24px 58px rgba(36,71,170,.24);
        }
        .cta-panel:after{
            content:"";
            position:absolute;
            width:330px;height:330px;
            right:-80px;top:-170px;
            border:1px solid rgba(255,255,255,.2);
            border-radius:50%;
        }
        .cta-panel h2{position:relative;z-index:1;max-width:700px;margin:0 0 13px;font-size:clamp(1.8rem,3.2vw,2.7rem);letter-spacing:-.05em}
        .cta-panel p{position:relative;z-index:1;max-width:650px;margin:0 0 25px;color:rgba(255,255,255,.76)}
        .cta-panel .btn-outline-custom{position:relative;z-index:1;color:#fff;background:transparent;border-color:rgba(255,255,255,.45)}
        .cta-panel .btn-outline-custom:hover{color:#fff;background:rgba(255,255,255,.12);border-color:#fff}
        .site-footer{padding:70px 0 25px;background:var(--ink-deep);color:#fff}
        .footer-main{display:grid;grid-template-columns:1.4fr .8fr .9fr 1.15fr;gap:35px;padding-bottom:48px}
        .footer-brand{color:#fff}
        .footer-desc{max-width:280px;margin:18px 0 0;color:#98a8c5;font-size:.88rem}
        .footer-title{margin:4px 0 16px;font-size:.9rem;color:#fff}
        .footer-links{list-style:none;padding:0;margin:0}
        .footer-links li{margin:9px 0;color:#98a8c5;font-size:.84rem}
        .footer-links a{transition:.2s ease}
        .footer-links a:hover{color:#fff}
        .footer-bottom{display:flex;justify-content:space-between;gap:25px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);color:#8291ae;font-size:.76rem}
        .footer-disclaimer{max-width:650px;text-align:right}
        @media(max-width:991px){
            .navbar-nav{padding:14px 0}
            .navbar-collapse .btn-primary-custom{margin-bottom:12px}
            .service-grid,.news-layout{grid-template-columns:1fr}
            .footer-main{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:767px){
            .section{padding:72px 0}
            .page-hero{padding:68px 0 62px}
            .hero-copy h1{font-size:clamp(2.5rem,12vw,4rem)}
            .route-board{margin-top:30px}
            .metric-grid{grid-template-columns:repeat(2,1fr);gap:10px}
            .metric{padding:9px;border-right:0}
            .metric strong{font-size:1.2rem}
            .split-heading{display:block;margin-bottom:30px}
            .board-stats{gap:7px}
            .board-stat{padding:10px 8px}
            .compare-wrap{overflow-x:auto}
            .compare-row{min-width:650px}
            .milestone-list{grid-template-columns:repeat(2,1fr);gap:30px 18px}
            .milestone-list:before{display:none}
            .security-grid{grid-template-columns:1fr}
            .cta-panel{padding:34px 25px}
            .footer-main{grid-template-columns:1fr 1fr;gap:28px 18px}
            .footer-bottom{display:block}
            .footer-disclaimer{text-align:left;margin-top:12px}
        }
        @media(max-width:520px){
            .brand{font-size:1rem}
            .brand-mark{width:35px;height:35px}
            .hero-actions .btn-primary-custom,.hero-actions .btn-outline-custom{width:100%}
            .metric-grid{grid-template-columns:1fr 1fr}
            .metric{display:block}
            .metric i{display:block;margin-bottom:5px}
            .footer-main{grid-template-columns:1fr}
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}