/* roulang page: index */
:root {
            --bg: #070a14;
            --bg-soft: #0d1221;
            --panel: #11182a;
            --panel-light: #151e33;
            --primary: #5b6cff;
            --primary-deep: #4050df;
            --cyan: #3ed8ff;
            --text: #f4f7ff;
            --muted: #98a4bf;
            --muted-2: #697693;
            --line: rgba(151, 169, 215, .16);
            --line-strong: rgba(151, 169, 215, .28);
            --radius-lg: 28px;
            --radius-md: 20px;
            --shadow: 0 24px 70px rgba(0, 0, 0, .28);
            --shadow-hover: 0 26px 80px rgba(47, 76, 220, .22);
        }

        *, *::before, *::after { box-sizing: border-box; }

        html { scroll-behavior: smooth; }

        body {
            margin: 0;
            background:
                radial-gradient(circle at 85% 4%, rgba(80, 98, 255, .16), transparent 27rem),
                radial-gradient(circle at 8% 30%, rgba(40, 182, 255, .07), transparent 24rem),
                var(--bg);
            color: var(--text);
            font-family: "Noto Sans SC", "Manrope", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }

        a { color: inherit; text-decoration: none; transition: color .25s ease, background .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease; }
        img { max-width: 100%; display: block; }
        button, a { -webkit-tap-highlight-color: transparent; }
        button:focus-visible, a:focus-visible { outline: 3px solid rgba(62, 216, 255, .68); outline-offset: 4px; }
        h1, h2, h3, h4, p { margin-top: 0; }
        h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -.035em; }
        .container { max-width: 1180px; }
        .section { padding: 112px 0; position: relative; }
        .section-soft { background: rgba(14, 20, 37, .72); border-top: 1px solid rgba(151, 169, 215, .08); border-bottom: 1px solid rgba(151, 169, 215, .08); }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 7px 12px;
            border: 1px solid rgba(108, 126, 255, .32);
            border-radius: 999px;
            color: #b9c1ff;
            background: rgba(91, 108, 255, .1);
            font-size: .76rem;
            font-weight: 700;
            letter-spacing: .08em;
        }
        .eyebrow i { color: var(--cyan); font-size: .65rem; }
        .section-heading { max-width: 720px; margin-bottom: 48px; }
        .section-heading h2 { font-size: clamp(2rem, 4vw, 3.25rem); margin: 18px 0 16px; }
        .section-heading p { color: var(--muted); margin-bottom: 0; font-size: 1.04rem; }
        .text-muted-custom { color: var(--muted) !important; }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(7, 10, 20, .72);
            border-bottom: 1px solid rgba(151, 169, 215, .1);
            backdrop-filter: blur(18px);
        }
        .navbar { min-height: 78px; padding: 12px 0; }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: -.04em;
        }
        .brand-mark {
            width: 35px;
            height: 35px;
            display: inline-grid;
            place-items: center;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            box-shadow: 0 8px 24px rgba(72, 102, 255, .35);
        }
        .navbar-nav { gap: 8px; }
        .nav-link {
            color: #aab4cb !important;
            font-size: .92rem;
            font-weight: 600;
            padding: 10px 14px !important;
            border-radius: 10px;
        }
        .nav-link:hover, .nav-link.active { color: #fff !important; background: rgba(255, 255, 255, .07); }
        .nav-download {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-left: 14px;
            padding: 10px 17px;
            border: 1px solid rgba(117, 135, 255, .52);
            border-radius: 12px;
            background: rgba(91, 108, 255, .14);
            color: #eef0ff;
            font-size: .88rem;
            font-weight: 700;
        }
        .nav-download:hover { color: #fff; background: var(--primary); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(91, 108, 255, .25); }
        .navbar-toggler { border: 1px solid var(--line-strong); padding: 9px 11px; }
        .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(91,108,255,.2); }
        .navbar-toggler-icon { filter: invert(1); }

        .hero {
            min-height: 790px;
            padding: 150px 0 82px;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            width: 540px;
            height: 540px;
            right: -150px;
            top: 90px;
            border-radius: 50%;
            background: rgba(84, 103, 255, .18);
            filter: blur(90px);
        }
        .hero-wrap { position: relative; z-index: 1; }
        .hero-copy { max-width: 650px; }
        .hero h1 {
            font-size: clamp(2.9rem, 6.3vw, 5.7rem);
            font-weight: 800;
            margin: 23px 0 25px;
            line-height: 1.08;
            background: linear-gradient(135deg, #fff 15%, #ccd4ff 58%, #72e1ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-lead { max-width: 625px; color: #b9c3db; font-size: 1.12rem; line-height: 1.9; margin-bottom: 34px; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-bottom: 40px; }
        .btn-primary-custom, .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 13px 20px;
            border-radius: 13px;
            font-weight: 700;
            font-size: .94rem;
            border: 1px solid transparent;
        }
        .btn-primary-custom {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #7080ff);
            box-shadow: 0 14px 32px rgba(76, 94, 255, .3);
        }
        .btn-primary-custom:hover { color: #fff; transform: translateY(-3px); box-shadow: 0 18px 38px rgba(76, 94, 255, .42); }
        .btn-outline-custom { color: #dae1f5; border-color: var(--line-strong); background: rgba(255,255,255,.035); }
        .btn-outline-custom:hover { color: #fff; border-color: rgba(98, 218, 255, .7); background: rgba(62,216,255,.08); transform: translateY(-3px); }
        .hero-note { display: flex; gap: 24px; flex-wrap: wrap; color: var(--muted); font-size: .85rem; }
        .hero-note span { display: inline-flex; align-items: center; gap: 7px; }
        .hero-note i { color: var(--cyan); }

        .hero-visual { position: relative; min-height: 470px; margin-left: 30px; }
        .hero-image {
            position: absolute;
            inset: 20px 0 25px 30px;
            overflow: hidden;
            border-radius: 32px;
            border: 1px solid rgba(156, 174, 255, .28);
            box-shadow: var(--shadow);
            transform: rotate(2.5deg);
            background: #17213b;
        }
        .hero-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(145deg, rgba(15, 25, 68, .16), rgba(6, 9, 20, .74));
        }
        .hero-image img { width: 100%; height: 100%; object-fit: cover; opacity: .8; }
        .hero-console {
            position: absolute;
            z-index: 2;
            left: 0;
            bottom: 0;
            width: 78%;
            padding: 20px;
            border-radius: 22px;
            background: rgba(17, 24, 42, .87);
            border: 1px solid rgba(160, 178, 255, .28);
            box-shadow: 0 20px 60px rgba(0,0,0,.35);
            backdrop-filter: blur(18px);
        }
        .console-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 19px; }
        .console-title { font-weight: 700; font-size: .95rem; }
        .status-dot { display: inline-flex; align-items: center; gap: 7px; color: #9ef1c1; font-size: .74rem; }
        .status-dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #42e58e; box-shadow: 0 0 12px #42e58e; }
        .route-line { height: 7px; border-radius: 99px; background: linear-gradient(90deg, var(--primary) 0 78%, rgba(255,255,255,.1) 78%); margin-bottom: 18px; }
        .route-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: .75rem; }
        .float-chip {
            position: absolute;
            z-index: 3;
            right: -15px;
            top: 60px;
            padding: 14px 15px;
            border-radius: 16px;
            background: #171f36;
            border: 1px solid var(--line-strong);
            box-shadow: 0 14px 34px rgba(0,0,0,.28);
            font-size: .78rem;
        }
        .float-chip strong { display: block; color: #fff; font-size: 1.1rem; margin-top: 2px; }

        .ticker {
            padding: 15px 0;
            overflow: hidden;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            background: rgba(15, 23, 43, .7);
        }
        .ticker-track { display: flex; justify-content: center; gap: 42px; flex-wrap: wrap; color: #aeb9d3; font-size: .82rem; }
        .ticker-item { display: inline-flex; align-items: center; gap: 9px; }
        .ticker-item i { color: var(--cyan); }

        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .feature-card, .scenario-card, .quote-card, .update-card, .price-card, .security-card {
            height: 100%;
            padding: 29px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: linear-gradient(145deg, rgba(22, 31, 55, .9), rgba(13, 18, 33, .92));
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }
        .feature-card:hover, .scenario-card:hover, .quote-card:hover, .update-card:hover, .price-card:hover, .security-card:hover {
            transform: translateY(-7px);
            border-color: rgba(105, 130, 255, .58);
            box-shadow: var(--shadow-hover);
        }
        .icon-box {
            width: 52px;
            height: 52px;
            display: grid;
            place-items: center;
            margin-bottom: 23px;
            border-radius: 16px;
            color: #dce2ff;
            background: linear-gradient(135deg, rgba(91,108,255,.28), rgba(62,216,255,.12));
            border: 1px solid rgba(119, 143, 255, .28);
            font-size: 1.2rem;
        }
        .feature-card h3, .scenario-card h3, .security-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
        .feature-card p, .scenario-card p, .security-card p { color: var(--muted); font-size: .92rem; margin-bottom: 0; }

        .split-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
        .split-panel.reverse { grid-template-columns: 1.1fr .9fr; }
        .visual-card {
            position: relative;
            min-height: 420px;
            padding: 27px;
            border-radius: 32px;
            overflow: hidden;
            border: 1px solid rgba(121, 146, 255, .22);
            background:
                linear-gradient(150deg, rgba(67, 81, 181, .45), rgba(12, 18, 38, .96)),
                url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1200&q=80") center/cover;
            box-shadow: var(--shadow);
        }
        .visual-card.alt { background: linear-gradient(150deg, rgba(14, 124, 174, .36), rgba(12, 18, 38, .96)), url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1200&q=80") center/cover; }
        .visual-label { display: inline-flex; padding: 7px 11px; border-radius: 999px; background: rgba(6,10,25,.55); border: 1px solid rgba(255,255,255,.17); color: #dce4ff; font-size: .75rem; }
        .visual-card h3 { position: absolute; left: 27px; bottom: 68px; max-width: 340px; font-size: 2.1rem; }
        .visual-card p { position: absolute; left: 27px; bottom: 27px; margin: 0; color: #b7c2df; font-size: .85rem; }
        .check-list { list-style: none; padding: 0; margin: 25px 0 0; }
        .check-list li { position: relative; padding-left: 30px; margin-bottom: 16px; color: #c3cce0; }
        .check-list li::before { content: "\f00c"; position: absolute; left: 0; top: 2px; width: 19px; height: 19px; display: grid; place-items: center; border-radius: 50%; background: rgba(62,216,255,.15); color: var(--cyan); font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: .66rem; }

        .node-board { padding: 30px; border-radius: 28px; border: 1px solid var(--line); background: rgba(17,24,42,.78); }
        .node-head, .node-row { display: grid; grid-template-columns: 1.2fr .8fr .6fr .6fr; gap: 18px; align-items: center; }
        .node-head { color: var(--muted-2); font-size: .74rem; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
        .node-row { padding: 18px 0; border-bottom: 1px solid rgba(151,169,215,.1); font-size: .88rem; }
        .node-row:last-child { border-bottom: 0; padding-bottom: 0; }
        .node-name { display: flex; align-items: center; gap: 10px; font-weight: 600; }
        .node-icon { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 10px; color: #bfcaff; background: rgba(91,108,255,.16); }
        .node-status { color: #82e6b0; font-size: .78rem; }
        .latency { color: #e9efff; font-weight: 700; }
        .bar { height: 6px; border-radius: 10px; background: rgba(255,255,255,.1); overflow: hidden; }
        .bar span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--cyan), var(--primary)); }

        .scenario-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
        .scenario-card { padding: 23px; }
        .scenario-card .scenario-num { color: var(--cyan); font-family: "Manrope", sans-serif; font-weight: 800; font-size: .82rem; margin-bottom: 23px; }
        .scenario-card h3 { font-size: 1.05rem; }

        .stage {
            padding: 55px;
            border-radius: 32px;
            background: linear-gradient(120deg, rgba(40,52,132,.62), rgba(12,17,34,.9));
            border: 1px solid rgba(119, 142, 255, .26);
            overflow: hidden;
            position: relative;
        }
        .stage::after { content: ""; position: absolute; width: 370px; height: 370px; right: -80px; top: -130px; border-radius: 50%; background: rgba(62,216,255,.13); filter: blur(8px); }
        .stage-content { position: relative; z-index: 1; max-width: 650px; }
        .stage h2 { font-size: clamp(2rem, 4vw, 3.3rem); margin: 16px 0; }
        .stage p { color: #bdc8e2; margin-bottom: 0; }
        .stage-bars { position: absolute; z-index: 1; right: 55px; bottom: 55px; width: 250px; }
        .stage-bars div { display: flex; align-items: center; gap: 13px; margin-top: 15px; color: #c8d1e8; font-size: .78rem; }
        .stage-bars div span { display: block; height: 8px; flex: 1; border-radius: 99px; background: linear-gradient(90deg, var(--cyan), var(--primary)); }

        .price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
        .price-card { padding: 26px; position: relative; }
        .price-card.featured { border-color: rgba(93, 117, 255, .75); background: linear-gradient(160deg, rgba(48,61,150,.6), rgba(16,23,44,.96)); box-shadow: 0 20px 60px rgba(64,80,223,.17); }
        .price-badge { position: absolute; top: 19px; right: 18px; padding: 4px 8px; border-radius: 99px; background: rgba(62,216,255,.14); color: var(--cyan); font-size: .67rem; font-weight: 700; }
        .price-card h3 { font-size: 1.1rem; margin-bottom: 20px; }
        .price { font-family: "Manrope", sans-serif; font-size: 2.3rem; font-weight: 800; margin-bottom: 6px; }
        .price small { color: var(--muted); font-size: .78rem; font-weight: 500; }
        .price-desc { min-height: 47px; color: var(--muted); font-size: .79rem; margin-bottom: 22px; }
        .price-card ul { list-style: none; padding: 18px 0 0; margin: 0; border-top: 1px solid var(--line); }
        .price-card li { color: #c5cee2; font-size: .8rem; margin-bottom: 10px; }
        .price-card li i { color: var(--cyan); margin-right: 7px; }

        .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 24px; overflow: hidden; background: rgba(16,23,41,.72); }
        .stat-item { padding: 31px 25px; border-right: 1px solid var(--line); }
        .stat-item:last-child { border-right: 0; }
        .stat-value { font-family: "Manrope", sans-serif; font-size: 2.25rem; font-weight: 800; letter-spacing: -.06em; }
        .stat-value span { color: var(--cyan); }
        .stat-label { color: var(--muted); font-size: .83rem; margin-top: 3px; }

        .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
        .quote-card { padding: 26px; }
        .stars { color: #ffd36a; letter-spacing: 3px; font-size: .78rem; margin-bottom: 17px; }
        .quote-card blockquote { color: #dce3f2; font-size: .93rem; line-height: 1.8; margin: 0 0 24px; }
        .quote-person { display: flex; align-items: center; gap: 11px; color: #fff; font-weight: 600; font-size: .84rem; }
        .avatar { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg, #5568ff, #24c5e3); font-size: .75rem; }

        .updates-grid { display: grid; grid-template-columns: 1.3fr .85fr .85fr; gap: 17px; }
        .update-card { padding: 25px; }
        .update-card.featured-update { min-height: 260px; display: flex; flex-direction: column; justify-content: flex-end; background: linear-gradient(160deg, rgba(31,48,118,.9), rgba(15,21,39,.98)); }
        .update-tag { color: var(--cyan); font-size: .74rem; font-weight: 700; margin-bottom: 13px; }
        .update-card h3 { font-size: 1.18rem; margin-bottom: 10px; }
        .update-card p { color: var(--muted); font-size: .83rem; margin-bottom: 0; }
        .update-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 19px; color: #d7ddff; font-size: .8rem; font-weight: 700; }
        .update-link:hover { color: var(--cyan); gap: 11px; }

        .faq-wrap { max-width: 880px; margin: 0 auto; }
        .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line); }
        .accordion-button { background: transparent !important; color: #eff3ff !important; box-shadow: none !important; padding: 22px 0; font-weight: 700; font-size: 1rem; }
        .accordion-button::after { filter: invert(1); opacity: .7; }
        .accordion-body { color: var(--muted); padding: 0 35px 22px 0; font-size: .9rem; }

        .final-cta { padding: 72px 0; background: linear-gradient(110deg, #202d88, #111a3d 57%, #10172c); border-top: 1px solid rgba(132,153,255,.25); border-bottom: 1px solid rgba(132,153,255,.25); }
        .final-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .final-cta h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 12px; }
        .final-cta p { max-width: 660px; margin-bottom: 0; color: #c4ceea; }

        .site-footer { padding: 70px 0 25px; background: #05070f; }
        .footer-main { display: grid; grid-template-columns: 1.4fr .8fr .8fr .9fr; gap: 40px; padding-bottom: 48px; }
        .footer-brand p { max-width: 310px; color: var(--muted); font-size: .85rem; margin-top: 18px; }
        .footer-title { margin-bottom: 18px; color: #f1f4ff; font-size: .88rem; font-weight: 700; }
        .footer-links { display: grid; gap: 10px; }
        .footer-links a { color: var(--muted); font-size: .82rem; }
        .footer-links a:hover { color: var(--cyan); }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted-2); font-size: .76rem; }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a { width: 31px; height: 31px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); }
        .footer-social a:hover { color: #fff; border-color: var(--primary); background: rgba(91,108,255,.15); }

        @media (max-width: 1199px) {
            .hero { min-height: auto; }
            .hero-visual { margin-left: 0; }
            .scenario-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 991px) {
            .navbar-collapse { padding: 16px 0 8px; }
            .nav-download { margin: 8px 0 0; }
            .hero { padding-top: 135px; }
            .hero-visual { margin-top: 60px; min-height: 420px; }
            .split-panel, .split-panel.reverse { grid-template-columns: 1fr; gap: 38px; }
            .split-panel.reverse .visual-card { order: -1; }
            .price-grid { grid-template-columns: repeat(2, 1fr); }
            .updates-grid { grid-template-columns: 1fr 1fr; }
            .featured-update { grid-column: span 2; }
            .footer-main { grid-template-columns: 1.5fr 1fr 1fr; }
            .footer-contact { grid-column: span 3; }
        }
        @media (max-width: 767px) {
            .section { padding: 78px 0; }
            .hero { padding: 120px 0 65px; }
            .hero h1 { font-size: clamp(2.65rem, 13vw, 4.2rem); }
            .hero-lead { font-size: 1rem; }
            .hero-visual { min-height: 350px; }
            .hero-image { inset: 15px 0 25px 10px; }
            .hero-console { width: 88%; }
            .float-chip { right: 0; top: 28px; }
            .feature-grid, .quote-grid { grid-template-columns: 1fr; }
            .node-board { padding: 20px 15px; overflow-x: auto; }
            .node-head, .node-row { min-width: 590px; }
            .stage { padding: 32px 25px 190px; }
            .stage-bars { left: 25px; right: 25px; bottom: 32px; width: auto; }
            .stat-grid { grid-template-columns: repeat(2, 1fr); }
            .stat-item:nth-child(2) { border-right: 0; }
            .stat-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
            .updates-grid { grid-template-columns: 1fr; }
            .featured-update { grid-column: auto; }
            .final-cta-inner { align-items: flex-start; flex-direction: column; }
            .footer-main { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
            .footer-brand { grid-column: span 2; }
            .footer-contact { grid-column: span 2; }
            .footer-bottom { align-items: flex-start; flex-direction: column; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 20px; padding-right: 20px; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .btn-primary-custom, .btn-outline-custom { width: 100%; }
            .hero-note { gap: 12px; flex-direction: column; }
            .scenario-grid, .price-grid { grid-template-columns: 1fr; }
            .price-card { min-height: auto; }
            .stat-value { font-size: 1.8rem; }
            .stat-item { padding: 25px 18px; }
            .visual-card { min-height: 330px; }
        }

/* roulang page: category1 */
:root {
  --bg:#070a14;
  --bg-soft:#0d1221;
  --panel:#11182a;
  --panel-light:#151e33;
  --primary:#5b6cff;
  --primary-deep:#4050df;
  --cyan:#3ed8ff;
  --text:#f4f7ff;
  --muted:#98a4bf;
  --muted-2:#697693;
  --line:rgba(151,169,215,.16);
  --line-strong:rgba(151,169,215,.28);
  --radius-lg:28px;
  --radius-md:20px;
  --shadow:0 24px 70px rgba(0,0,0,.28);
  --shadow-hover:0 26px 80px rgba(47,76,220,.22);
 }
 *{box-sizing:border-box}
 html{scroll-behavior:smooth}
 body{
  margin:0;
  background:
   radial-gradient(circle at 84% 7%,rgba(80,98,255,.16),transparent 28rem),
   radial-gradient(circle at 7% 35%,rgba(40,182,255,.07),transparent 24rem),
   var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","Manrope",sans-serif;
  line-height:1.75;
  overflow-x:hidden;
 }
 a{color:inherit;text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease}
 img{max-width:100%;display:block}
 button,a{-webkit-tap-highlight-color:transparent}
 button:focus-visible,a:focus-visible{outline:3px solid rgba(62,216,255,.68);outline-offset:4px}
 .container{max-width:1180px}
 .section{padding:108px 0;position:relative}
 .section-soft{background:rgba(14,20,37,.72);border-top:1px solid rgba(151,169,215,.08);border-bottom:1px solid rgba(151,169,215,.08)}
 .eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:7px 12px;
  border:1px solid rgba(108,126,255,.32);border-radius:999px;
  color:#b9c1ff;background:rgba(91,108,255,.1);font-size:.76rem;
  font-weight:700;letter-spacing:.08em
 }
 .eyebrow i{color:var(--cyan);font-size:.65rem}
 .section-heading{max-width:720px;margin-bottom:46px}
 .section-heading h2{font-size:clamp(2rem,4vw,3.25rem);line-height:1.2;margin:18px 0 16px;letter-spacing:-.04em}
 .section-heading p{color:var(--muted);margin:0;font-size:1.04rem}
 .text-muted-custom{color:var(--muted)!important}
 .site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(7,10,20,.72);border-bottom:1px solid rgba(151,169,215,.1);
  backdrop-filter:blur(18px)
 }
 .navbar{min-height:78px;padding:12px 0}
 .navbar-brand{display:inline-flex;align-items:center;gap:11px;font-size:1.15rem;font-weight:800;letter-spacing:-.04em}
 .brand-mark{
  width:35px;height:35px;display:inline-grid;place-items:center;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff;
  box-shadow:0 8px 24px rgba(72,102,255,.35)
 }
 .navbar-nav{gap:8px}
 .nav-link{color:#aab4cb!important;font-size:.92rem;font-weight:600;padding:10px 14px!important;border-radius:10px}
 .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(255,255,255,.07)}
 .nav-download{
  display:inline-flex;align-items:center;gap:8px;margin-left:14px;padding:10px 17px;
  border:1px solid rgba(117,135,255,.52);border-radius:12px;background:rgba(91,108,255,.14);
  color:#eef0ff;font-size:.88rem;font-weight:700
 }
 .nav-download:hover{color:#fff;background:var(--primary);transform:translateY(-2px);box-shadow:0 10px 24px rgba(91,108,255,.25)}
 .navbar-toggler{border:1px solid var(--line-strong);padding:9px 11px}
 .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(91,108,255,.2)}
 .navbar-toggler-icon{filter:invert(1)}
 .page-hero{
  min-height:590px;padding:158px 0 82px;position:relative;overflow:hidden;
  border-bottom:1px solid rgba(151,169,215,.1)
 }
 .page-hero:before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:55px;border-radius:50%;
  background:rgba(84,103,255,.18);filter:blur(90px)
 }
 .page-hero:after{
  content:"";position:absolute;left:5%;bottom:-240px;width:430px;height:430px;border-radius:50%;
  background:rgba(62,216,255,.06);filter:blur(90px)
 }
 .hero-grid{position:relative;z-index:1}
 .hero-copy{max-width:690px}
 .hero-copy h1{
  font-size:clamp(2.8rem,6vw,5.5rem);font-weight:800;line-height:1.08;
  letter-spacing:-.065em;margin:22px 0 24px;
  background:linear-gradient(135deg,#fff 15%,#ccd4ff 58%,#72e1ff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
 }
 .hero-copy p{max-width:670px;color:#b9c3db;font-size:1.1rem;line-height:1.9;margin:0}
 .hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
 .meta-chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 13px;border:1px solid var(--line);
  border-radius:12px;background:rgba(255,255,255,.035);color:#cad4eb;font-size:.84rem
 }
 .meta-chip i{color:var(--cyan)}
 .signal-panel{
  position:relative;min-height:335px;padding:26px;border:1px solid var(--line);
  border-radius:var(--radius-lg);background:linear-gradient(145deg,rgba(21,30,51,.95),rgba(12,18,33,.88));
  box-shadow:var(--shadow);overflow:hidden
 }
 .signal-panel:before{
  content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(91,108,255,.11),transparent 70%);
  transform:translateX(-100%);animation:scan 5s ease-in-out infinite
 }
 @keyframes scan{0%,35%{transform:translateX(-100%)}70%,100%{transform:translateX(100%)}}
 .panel-top{position:relative;display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
 .panel-label{color:#aeb9d2;font-size:.84rem;font-weight:700}
 .live-status{display:inline-flex;align-items:center;gap:7px;color:#74edc0;font-size:.78rem}
 .live-status span{width:7px;height:7px;border-radius:50%;background:#5de0aa;box-shadow:0 0 0 5px rgba(93,224,170,.1)}
 .signal-list{position:relative;display:grid;gap:15px;padding-top:22px}
 .signal-row{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px}
 .signal-icon{
  width:34px;height:34px;display:grid;place-items:center;border-radius:11px;
  color:#b8c1ff;background:rgba(91,108,255,.14)
 }
 .signal-name{font-weight:700;font-size:.88rem}
 .signal-sub{font-size:.72rem;color:var(--muted-2);margin-top:2px}
 .signal-value{font-family:"Manrope",sans-serif;color:#b8f3dc;font-size:.82rem;font-weight:800}
 .signal-line{height:5px;margin-top:8px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden}
 .signal-line span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--cyan))}
 .button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
 .btn-primary-custom,.btn-outline-custom{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 20px;
  border-radius:13px;font-weight:700;font-size:.94rem;border:1px solid transparent
 }
 .btn-primary-custom{color:#fff;background:linear-gradient(135deg,var(--primary),#7080ff);box-shadow:0 14px 32px rgba(76,94,255,.3)}
 .btn-primary-custom:hover{color:#fff;transform:translateY(-3px);box-shadow:0 18px 38px rgba(76,94,255,.42)}
 .btn-outline-custom{color:#dae1f5;border-color:var(--line-strong);background:rgba(255,255,255,.035)}
 .btn-outline-custom:hover{color:#fff;border-color:rgba(98,218,255,.7);background:rgba(62,216,255,.08);transform:translateY(-3px)}
 .topic-strip{padding:24px 0;border-bottom:1px solid var(--line);background:rgba(9,13,25,.75)}
 .topic-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
 .topic-label{color:#e6ebfa;font-size:.9rem;font-weight:700;white-space:nowrap}
 .topic-list{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}
 .topic-list a{padding:7px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.8rem}
 .topic-list a:hover{color:#fff;border-color:rgba(98,218,255,.5);background:rgba(62,216,255,.07)}
 .article-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:28px;align-items:start}
 .article-feature{
  position:relative;min-height:420px;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;background:var(--panel);box-shadow:var(--shadow)
 }
 .article-feature img{width:100%;height:420px;object-fit:cover;opacity:.7;filter:saturate(.85)}
 .article-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,10,20,.98),rgba(7,10,20,.1) 68%)}
 .feature-copy{position:absolute;z-index:2;left:32px;right:32px;bottom:30px}
 .feature-copy h3{font-size:clamp(1.45rem,3vw,2.2rem);line-height:1.3;margin:15px 0 10px;letter-spacing:-.03em}
 .feature-copy p{color:#b5c1da;margin:0;max-width:650px}
 .article-list{display:grid;gap:15px}
 .article-card{
  display:block;padding:21px 22px;border:1px solid var(--line);border-radius:18px;
  background:rgba(17,24,42,.72)
 }
 .article-card:hover{transform:translateY(-4px);border-color:rgba(104,125,255,.58);background:rgba(22,31,54,.95);box-shadow:var(--shadow-hover)}
 .article-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
 .article-tag{color:#aeb9ff;background:rgba(91,108,255,.11);padding:4px 9px;border-radius:7px;font-size:.7rem;font-weight:700}
 .article-date{color:var(--muted-2);font-size:.72rem}
 .article-card h4{font-size:1.02rem;line-height:1.5;margin:0 0 7px}
 .article-card p{color:var(--muted);font-size:.82rem;line-height:1.7;margin:0}
 .insight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
 .insight-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(17,24,42,.68);min-height:230px}
 .insight-card:hover{transform:translateY(-5px);border-color:rgba(104,125,255,.6);box-shadow:var(--shadow-hover)}
 .insight-number{font:800 2.3rem/1 "Manrope",sans-serif;color:rgba(112,128,255,.34);margin-bottom:22px}
 .insight-card h3{font-size:1.18rem;margin:0 0 11px}
 .insight-card p{color:var(--muted);font-size:.9rem;margin:0}
 .split-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center}
 .split-section h2{font-size:clamp(2rem,4vw,3rem);line-height:1.22;letter-spacing:-.045em;margin:17px 0}
 .split-section>div>p{color:var(--muted);font-size:1rem}
 .check-list{display:grid;gap:14px;margin:26px 0 0;padding:0;list-style:none}
 .check-list li{display:flex;gap:13px;align-items:flex-start;color:#dbe3f7}
 .check-list i{color:var(--cyan);margin-top:6px}
 .metric-board{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
 .metric-card{padding:25px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(145deg,rgba(21,30,51,.92),rgba(13,18,33,.8))}
 .metric-card:nth-child(2){transform:translateY(25px)}
 .metric-card:nth-child(3){transform:translateY(-10px)}
 .metric-card:nth-child(4){transform:translateY(15px)}
 .metric-icon{color:var(--cyan);font-size:1.2rem;margin-bottom:21px}
 .metric-card strong{display:block;font:800 2rem/1.1 "Manrope",sans-serif;letter-spacing:-.04em}
 .metric-card span{display:block;color:var(--muted);font-size:.8rem;margin-top:9px}
 .guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
 .guide-card{position:relative;padding:25px 22px;border-top:1px solid rgba(105,125,255,.55);background:rgba(17,24,42,.56)}
 .guide-card:before{content:"";position:absolute;top:-5px;left:22px;width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 5px rgba(62,216,255,.1)}
 .guide-step{color:#8797ff;font:800 .75rem "Manrope",sans-serif;letter-spacing:.08em}
 .guide-card h3{font-size:1rem;margin:18px 0 9px}
 .guide-card p{color:var(--muted);font-size:.82rem;margin:0}
 .faq-wrap{max-width:900px}
 .accordion-item{background:rgba(17,24,42,.7)!important;border:1px solid var(--line)!important;margin-bottom:12px;border-radius:16px!important;overflow:hidden}
 .accordion-button{background:transparent!important;color:#eaf0ff!important;font-weight:700;padding:20px 22px;box-shadow:none!important}
 .accordion-button:after{filter:invert(1);opacity:.7}
 .accordion-body{color:var(--muted);padding:0 22px 21px;font-size:.9rem}
 .cta-section{padding:78px 0}
 .cta-box{
  position:relative;overflow:hidden;padding:55px 60px;border:1px solid rgba(117,135,255,.32);
  border-radius:var(--radius-lg);background:linear-gradient(115deg,rgba(43,54,148,.7),rgba(15,26,53,.95) 62%);
  box-shadow:var(--shadow)
 }
 .cta-box:after{content:"";position:absolute;width:280px;height:280px;right:-70px;top:-100px;border-radius:50%;background:rgba(62,216,255,.14);filter:blur(8px)}
 .cta-content{position:relative;z-index:1;max-width:720px}
 .cta-content h2{font-size:clamp(1.9rem,4vw,3.2rem);line-height:1.2;letter-spacing:-.045em;margin:15px 0}
 .cta-content p{color:#c1cbe1;margin:0;max-width:630px}
 .site-footer{padding:68px 0 24px;background:#060912;border-top:1px solid rgba(151,169,215,.12)}
 .footer-main{display:grid;grid-template-columns:1.45fr .8fr .8fr 1fr;gap:38px;padding-bottom:48px}
 .footer-brand p{max-width:300px;color:var(--muted);font-size:.86rem;margin:18px 0 0}
 .footer-title{font-size:.84rem;color:#f0f4ff;font-weight:800;margin-bottom:16px}
 .footer-links{display:grid;gap:9px}
 .footer-links a,.footer-links span{color:var(--muted);font-size:.82rem}
 .footer-links a:hover{color:#fff;transform:translateX(3px)}
 .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted-2);font-size:.78rem}
 .footer-social{display:flex;gap:9px}
 .footer-social a{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;color:var(--muted)}
 .footer-social a:hover{color:#fff;border-color:var(--primary);background:rgba(91,108,255,.15)}
 .reveal{animation:fadeUp .75s ease both}
 .delay-1{animation-delay:.12s}.delay-2{animation-delay:.22s}
 @keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
 @media(max-width:991px){
  .navbar-collapse{padding:14px 0 8px}
  .navbar-nav{gap:2px}
  .nav-download{margin:12px 0 0;justify-content:center}
  .page-hero{padding-top:135px}
  .article-layout{grid-template-columns:1fr}
  .article-list{grid-template-columns:repeat(2,1fr)}
  .split-section{grid-template-columns:1fr;gap:42px}
  .footer-main{grid-template-columns:repeat(2,1fr)}
 }
 @media(max-width:767px){
  .section{padding:76px 0}
  .page-hero{min-height:auto;padding:128px 0 68px}
  .hero-copy h1{font-size:clamp(2.7rem,13vw,4rem)}
  .hero-copy p{font-size:1rem}
  .signal-panel{margin-top:38px;min-height:300px}
  .topic-strip-inner{display:block}
  .topic-label{margin-bottom:14px}
  .topic-list{justify-content:flex-start}
  .article-list,.insight-grid{grid-template-columns:1fr}
  .article-feature img{height:390px}
  .guide-grid{grid-template-columns:repeat(2,1fr)}
  .cta-box{padding:38px 26px}
 }
 @media(max-width:520px){
  .container{padding-left:20px;padding-right:20px}
  .hero-meta{display:grid}
  .meta-chip{width:100%}
  .button-row{display:grid}
  .button-row a{width:100%}
  .metric-board{grid-template-columns:1fr}
  .metric-card:nth-child(n){transform:none}
  .guide-grid{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{align-items:flex-start;flex-direction:column}
  .feature-copy{left:22px;right:22px;bottom:22px}
  .article-feature img{height:430px}
 }

/* 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}