/* roulang page: index */
:root{--bg:#f4f7ff;--surface:#fff;--surface-soft:#edf3ff;--ink:#14233f;--muted:#596a84;--line:#dce5f3;--blue:#335de4;--blue-dark:#254ac5;--pale:#e7eeff;--navy:#142446;--radius:24px;--shadow:0 18px 50px rgba(36,68,133,.09);--space:clamp(72px,8vw,116px)}
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:100px}
    body{margin:0;padding-bottom:76px;background:var(--bg);color:var(--ink);font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,border-color .2s}
    button{font:inherit;cursor:pointer}img{max-width:100%;display:block}
    button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #83a5ff;outline-offset:4px}
    ::selection{background:#bed0ff;color:#172c65}
    .container{width:min(1180px,calc(100% - 48px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(248,250,255,.94);border-bottom:1px solid rgba(220,229,243,.85);backdrop-filter:blur(18px)}
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:36px}
    .logo{display:inline-flex;align-items:center;gap:11px;font-size:22px;font-weight:850;letter-spacing:-.05em;white-space:nowrap}
    .logo-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:var(--blue);color:#fff;box-shadow:0 7px 18px rgba(51,93,228,.22);font-size:18px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 16px;border-radius:11px;color:var(--muted);font-size:14px;font-weight:650;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--pale)}
    .nav-action{white-space:nowrap;padding:10px 19px!important}
    .menu-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid transparent;border-radius:13px;padding:13px 22px;font-size:14px;font-weight:750;line-height:1.25;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
    .btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(51,93,228,.19)}
    .btn-primary:hover{background:var(--blue-dark);box-shadow:0 14px 27px rgba(51,93,228,.25)}
    .btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-outline:hover{border-color:#a9bef9;color:var(--blue)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:780;font-size:13px;letter-spacing:.08em}
    .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:#6486ff;box-shadow:0 0 0 5px #e6edff}
    .section{padding:var(--space) 0;border-bottom:1px solid var(--line)}
    .section-white{background:#fff}.section-blue{background:#edf3ff}
    .section-heading{max-width:700px;margin-bottom:32px}
    .section-heading h2{margin:12px 0 14px;font-size:clamp(27px,3.2vw,42px);line-height:1.25;letter-spacing:-.045em;font-weight:800}
    .section-heading p,.section-intro{margin:0;color:var(--muted);font-size:15px;line-height:1.95}
    .hero{padding:72px 0 83px;overflow:hidden;background:radial-gradient(circle at 85% 10%,#dfe9ff 0,transparent 34%),linear-gradient(180deg,#f8faff 0%,#f2f6ff 100%)}
    .hero-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:65px;align-items:center}
    h1{font-size:clamp(37px,5.1vw,68px);font-weight:850;line-height:1.17;letter-spacing:-.06em;margin:19px 0 23px}
    .hero-lead{max-width:650px;font-size:16px;color:#50617c;line-height:2;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .hero-note{display:flex;align-items:center;gap:9px;margin-top:21px;color:#667892;font-size:13px}
    .hero-note i{color:var(--blue)}
    .hero-art{position:relative;min-height:360px;overflow:hidden;border-radius:30px;background:#142b60;box-shadow:0 32px 70px rgba(23,51,108,.23)}
    .hero-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.64}
    .hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(19,39,87,.24),rgba(16,39,92,.88))}
    .art-content{position:absolute;inset:auto 28px 28px;z-index:1;color:white}
    .art-label{font-size:12px;letter-spacing:.13em;color:#c8d8ff}
    .art-content strong{display:block;margin:10px 0;font-size:25px;line-height:1.3}
    .art-track{display:flex;align-items:center;gap:9px;margin-top:18px}
    .art-track span{height:7px;border-radius:20px;background:#91adff;flex:1}.art-track span:nth-child(2){flex:1.6;background:#fff}.art-track span:nth-child(3){flex:.65}
    .hero-strip{margin-top:44px;padding:17px 22px;display:flex;align-items:center;flex-wrap:wrap;gap:14px 32px;border:1px solid #dce6f9;background:rgba(255,255,255,.8);border-radius:17px;color:#546684;font-size:13px;box-shadow:0 10px 30px rgba(31,65,138,.04)}
    .hero-strip strong{color:var(--ink)}.hero-strip i{margin-right:8px;color:var(--blue)}
    .three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s}
    .card:hover{transform:translateY(-5px);box-shadow:0 24px 55px rgba(37,67,124,.14);border-color:#b9caf7}
    .feature-card{padding:28px;min-height:250px}
    .feature-icon{display:grid;place-items:center;width:48px;height:48px;margin-bottom:27px;border-radius:15px;background:#e9efff;color:var(--blue);font-size:20px}
    .feature-card h3,.check-card h3{font-size:18px;line-height:1.4;margin:0 0 11px;font-weight:760}
    .feature-card p,.check-card p,.price-card p{margin:0;font-size:14px;line-height:1.85;color:var(--muted)}
    .check-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
    .check-layout .section-heading{position:sticky;top:110px}
    .check-list{display:grid;gap:13px}
    .check-card{display:flex;gap:17px;padding:22px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px rgba(34,62,121,.04)}
    .check-num{font-size:14px;color:var(--blue);font-weight:800;padding-top:2px}
    .badge-band{background:#172b53;color:#fff}
    .badge-band .section-heading p{color:#bac9e3}.badge-band .eyebrow{color:#aebfff}
    .badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .assurance-badge{border:1px solid rgba(255,255,255,.17);background:rgba(255,255,255,.055);border-radius:18px;padding:24px 21px;min-height:175px}
    .assurance-badge i{font-size:21px;color:#9eb8ff}.assurance-badge strong{display:block;font-size:16px;margin:16px 0 6px}.assurance-badge span{display:block;color:#bbc9e1;font-size:13px;line-height:1.7}
    .boundary-wrap{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .boundary-panel{border-radius:25px;padding:32px;background:#fff;border:1px solid var(--line)}
    .boundary-panel.dark{background:#e7efff;border-color:#d7e3ff}
    .boundary-panel h3{margin:0 0 10px;font-size:21px}.boundary-panel p{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.85}
    .clean-list{padding:0;margin:0;list-style:none;display:grid;gap:13px}
    .clean-list li{position:relative;padding-left:24px;color:#405371;font-size:14px;line-height:1.7}
    .clean-list li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
    .news-list{overflow:hidden;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    .news-item{display:grid;grid-template-columns:125px 1fr auto;gap:20px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line)}
    .news-item:last-child{border-bottom:0}
    .news-type{font-size:13px;color:var(--blue);font-weight:750}
    .news-item h3{margin:0 0 4px;font-size:17px}.news-item p{margin:0;font-size:13px;color:var(--muted)}
    .news-arrow{color:#8498ba}
    .trust-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:center}
    .trust-quote{margin:0;padding:36px;border-radius:25px;background:var(--navy);color:#fff;box-shadow:0 20px 45px rgba(23,43,83,.19)}
    .trust-quote i{font-size:28px;color:#a5baff}
    .trust-quote blockquote{margin:18px 0 25px;font-size:22px;font-weight:650;line-height:1.65}
    .trust-quote figcaption{font-size:13px;color:#bccbe9}
    .trust-points{display:grid;gap:15px}
    .trust-point{display:flex;gap:15px;padding:17px 0;border-bottom:1px solid var(--line)}
    .trust-point i{color:var(--blue);font-size:18px;padding-top:4px}
    .trust-point strong{display:block;font-size:16px}.trust-point span{display:block;color:var(--muted);font-size:13px;line-height:1.75;margin-top:4px}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
    .faq-item[open]{border-color:#b8c9f5;box-shadow:var(--shadow)}
    .faq-item summary{position:relative;list-style:none;padding:20px 51px 20px 22px;font-weight:730;cursor:pointer}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"+";position:absolute;right:21px;top:16px;color:var(--blue);font-size:25px;font-weight:400}
    .faq-item[open] summary::after{content:"−"}
    .faq-item p{margin:0;padding:0 22px 22px;color:var(--muted);font-size:14px;line-height:1.9}
    .node-layout{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
    .node-visual{padding:32px;background:#172b53;border-radius:25px;color:#fff;min-height:300px;position:relative;overflow:hidden}
    .node-visual::after{content:"";position:absolute;width:250px;height:250px;right:-70px;bottom:-95px;border:1px solid rgba(255,255,255,.2);border-radius:50%;box-shadow:0 0 0 45px rgba(255,255,255,.04),0 0 0 95px rgba(255,255,255,.035)}
    .node-visual strong{font-size:25px;position:relative;z-index:1}.node-visual p{font-size:14px;line-height:1.9;color:#c0cde5;max-width:310px;position:relative;z-index:1}
    .node-chip{display:inline-flex;gap:9px;align-items:center;margin-top:32px;padding:11px 15px;border-radius:12px;background:rgba(255,255,255,.11);font-size:13px;position:relative;z-index:1}
    .node-chip i{color:#99b3ff}
    .node-copy{padding:10px 0}.node-copy .clean-list{margin-top:23px}
    .plans-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}
    .price-card{padding:25px;display:flex;flex-direction:column;gap:12px;min-height:215px}
    .price-card h3{margin:0;font-size:19px}.price-card .period{font-size:27px;font-weight:820;letter-spacing:-.04em;color:var(--blue)}
    .price-card.highlight{background:#ecf1ff;border-color:#abc0fa}
    .plans-note{margin:19px 0 0;color:var(--muted);font-size:13px}
    .download-panel{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;padding:37px;border-radius:26px;background:#e9f0ff;border:1px solid #d2dfff}
    .download-panel h2{font-size:clamp(25px,3vw,34px);line-height:1.3;margin:10px 0}
    .download-panel p{max-width:720px;margin:0;color:var(--muted);font-size:14px;line-height:1.9}
    .download-symbol{display:grid;place-items:center;width:86px;height:86px;border-radius:23px;background:#fff;color:var(--blue);font-size:34px;box-shadow:0 12px 25px rgba(42,84,180,.1)}
    .site-footer{background:#132544;color:#d6e1f4;padding:64px 0 38px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:48px}
    .footer-logo{color:#fff}.footer-desc{max-width:470px;color:#aebeda;font-size:14px;line-height:1.95;margin:20px 0 0}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px 22px;align-content:start;justify-content:flex-end}
    .footer-links a{font-size:14px;color:#c2d1e9}.footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:48px;padding-top:22px;display:flex;justify-content:space-between;gap:15px;color:#91a6c6;font-size:12px}
    .bottom-bar{position:fixed;bottom:0;left:0;right:0;z-index:45;background:rgba(255,255,255,.97);border-top:1px solid var(--line);box-shadow:0 -10px 35px rgba(22,45,93,.09);backdrop-filter:blur(16px)}
    .bottom-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .bottom-inner strong{display:block;font-size:15px}.bottom-inner span{display:block;color:var(--muted);font-size:12px}
    @media(max-width:1024px){.nav-shell{gap:18px}.nav-links a{padding:9px 10px}.hero-top{gap:35px}.badge-grid,.plans-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(100% - 36px,1180px)}.nav-shell{min-height:70px;flex-wrap:wrap;gap:10px}.menu-toggle{display:inline-flex;margin-left:auto}.nav-action{margin-left:0}.nav-links{display:none;order:4;width:100%;margin:0;padding:0 0 15px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:11px 14px}.hero{padding:53px 0 65px}.hero-top,.check-layout,.trust-layout,.node-layout{grid-template-columns:1fr;gap:27px}.hero-art{min-height:290px}.check-layout .section-heading{position:static}.three-grid{grid-template-columns:repeat(2,1fr)}.faq-list{grid-template-columns:1fr}.section{padding:72px 0}.footer-grid{grid-template-columns:1fr;gap:27px}.footer-links{justify-content:flex-start}}
    @media(max-width:520px){body{padding-bottom:72px}.container{width:calc(100% - 32px)}.logo{font-size:20px}.nav-action{padding:9px 13px!important;font-size:13px}.hero{padding:42px 0 55px}.hero-lead{font-size:14px}.hero-actions .btn{flex:1}.hero-art{min-height:245px}.art-content{inset:auto 20px 20px}.art-content strong{font-size:21px}.hero-strip{gap:11px 18px;padding:15px}.hero-strip span{width:100%}.section{padding:59px 0}.three-grid,.badge-grid,.boundary-wrap,.plans-grid{grid-template-columns:1fr}.feature-card{min-height:auto}.assurance-badge{min-height:auto}.news-item{grid-template-columns:1fr auto;gap:5px;padding:20px}.news-type{grid-column:1 / -1}.news-item p{line-height:1.6}.download-panel{grid-template-columns:1fr;padding:26px}.download-symbol{width:65px;height:65px;font-size:25px;grid-row:1}.bottom-inner{height:72px}.bottom-inner span{display:none}.bottom-inner .btn{padding:11px 13px;font-size:12px}.footer-bottom{flex-direction:column}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* roulang page: category1 */
:root{--bg:#f4f7ff;--surface:#fff;--surface-soft:#edf3ff;--ink:#14233f;--muted:#596a84;--line:#dce5f3;--blue:#335de4;--blue-dark:#254ac5;--pale:#e7eeff;--navy:#142446;--radius:24px;--shadow:0 18px 50px rgba(36,68,133,.09);--space:clamp(72px,8vw,116px)}
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:105px}
    body{margin:0;padding-bottom:86px;background:var(--bg);color:var(--ink);font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,border-color .2s}
    button{font:inherit;cursor:pointer}
    img{max-width:100%;display:block}
    button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #83a5ff;outline-offset:4px}
    .container{width:min(1180px,calc(100% - 48px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(248,250,255,.94);border-bottom:1px solid rgba(220,229,243,.85);backdrop-filter:blur(18px)}
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:36px}
    .logo{display:inline-flex;align-items:center;gap:11px;font-size:22px;font-weight:850;letter-spacing:-.05em;white-space:nowrap}
    .logo-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:var(--blue);color:#fff;box-shadow:0 7px 18px rgba(51,93,228,.22);font-size:18px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 16px;border-radius:11px;color:var(--muted);font-size:14px;font-weight:650;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--pale)}
    .nav-action{white-space:nowrap;padding:10px 19px!important}
    .menu-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid transparent;border-radius:13px;padding:13px 22px;font-size:14px;font-weight:750;line-height:1.25;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(51,93,228,.19)}
    .btn-primary:hover{background:var(--blue-dark);box-shadow:0 14px 27px rgba(51,93,228,.25)}
    .btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-outline:hover{border-color:#a9bef9;color:var(--blue)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:780;font-size:13px;letter-spacing:.08em}
    .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:#6486ff;box-shadow:0 0 0 5px #e6edff}
    .section{padding:var(--space) 0;border-bottom:1px solid var(--line)}
    .section-white{background:#fff}
    .section-blue{background:#edf3ff}
    .section-heading{max-width:700px;margin-bottom:32px}
    .section-heading h2{margin:12px 0 14px;font-size:clamp(27px,3.2vw,42px);line-height:1.25;letter-spacing:-.045em;font-weight:800}
    .section-heading p,.section-intro{margin:0;color:var(--muted);font-size:15px;line-height:1.95}
    .hero{padding:75px 0 83px;overflow:hidden;background:radial-gradient(circle at 85% 10%,#dfe9ff 0,transparent 34%),linear-gradient(180deg,#f8faff 0%,#f2f6ff 100%)}
    .hero-top{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:65px;align-items:center}
    .hero-lead{max-width:650px;font-size:16px;color:#50617c;line-height:2;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .hero-note{display:flex;align-items:center;gap:9px;margin-top:21px;color:#667892;font-size:13px}
    .hero-note i{color:var(--blue)}
    .hero-strip{margin-top:44px;padding:17px 22px;display:flex;align-items:center;flex-wrap:wrap;gap:14px 32px;border:1px solid #dce6f9;background:rgba(255,255,255,.8);border-radius:17px;color:#546684;font-size:13px;box-shadow:0 10px 30px rgba(31,65,138,.04)}
    .hero-strip strong{color:var(--ink)}
    .hero-strip i{margin-right:8px;color:var(--blue)}
    .three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s}
    .card:hover{transform:translateY(-5px);box-shadow:0 24px 55px rgba(37,67,124,.14);border-color:#b9caf7}
    .feature-card{padding:28px;min-height:250px}
    .feature-icon{display:grid;place-items:center;width:48px;height:48px;margin-bottom:27px;border-radius:15px;background:#e9efff;color:var(--blue);font-size:20px}
    .feature-card h3,.check-card h3{font-size:18px;line-height:1.4;margin:0 0 11px;font-weight:760}
    .feature-card p,.check-card p{margin:0;font-size:14px;line-height:1.85;color:var(--muted)}
    .clean-list{padding:0;margin:0;list-style:none;display:grid;gap:13px}
    .clean-list li{position:relative;padding-left:24px;color:#405371;font-size:14px;line-height:1.7}
    .clean-list li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
    .badge-band{background:#172b53;color:#fff}
    .badge-band .section-heading p{color:#bac9e3}
    .badge-band .eyebrow{color:#aebfff}
    .badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .assurance-badge{border:1px solid rgba(255,255,255,.17);background:rgba(255,255,255,.055);border-radius:18px;padding:24px 21px;min-height:175px}
    .assurance-badge i{font-size:21px;color:#9eb8ff}
    .assurance-badge strong{display:block;font-size:16px;margin:16px 0 6px}
    .assurance-badge span{display:block;color:#bbc9e1;font-size:13px;line-height:1.7}
    .site-footer{background:#101e3b;color:#d0daf0;padding:64px 0 28px}
    .footer-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:60px}
    .footer-logo{color:#fff}
    .footer-desc{max-width:560px;margin:21px 0 0;color:#aebdd7;font-size:14px;line-height:1.9}
    .footer-links{display:flex;flex-wrap:wrap;align-content:start;justify-content:flex-end;gap:12px 23px;max-width:330px;padding-top:9px}
    .footer-links a{color:#b8c6df;font-size:14px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:52px;padding-top:22px;color:#91a4c5;font-size:12px}
    /* 节点服务页 */
    .hero h1{font-size:clamp(39px,5.5vw,70px);line-height:1.12;letter-spacing:-.06em;font-weight:850;margin:17px 0 22px}
    .hero h1 em{font-style:normal;color:var(--blue)}
    .status-panel{padding:26px;background:#fff;border:1px solid #dce6f9;border-radius:28px;box-shadow:0 28px 65px rgba(36,68,133,.13)}
    .panel-head{display:flex;justify-content:space-between;gap:15px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}
    .panel-head strong{font-size:17px}
    .pill{display:inline-flex;align-items:center;gap:7px;border:1px solid #d5e4fd;background:#f1f6ff;border-radius:999px;padding:6px 12px;color:var(--blue-dark);font-size:12px;font-weight:700;white-space:nowrap}
    .signal{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin:20px 0}
    .signal-item{min-height:100px;padding:17px 10px;text-align:center;border:1px solid #e5ecf8;border-radius:17px;background:#f8faff}
    .signal-item i{display:block;margin-bottom:10px;color:var(--blue);font-size:22px}
    .signal-item span{font-size:12px;font-weight:700;color:#435775}
    .panel-note{padding:13px 15px;border-radius:13px;background:#edf3ff;color:#526680;font-size:12px;line-height:1.7}
    .panel-note i{color:var(--blue);margin-right:6px}
    .section-kicker{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.13em}
    .split-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(35px,7vw,100px);align-items:center}
    .split-layout .section-heading{margin-bottom:24px}
    .scene-stack{display:grid;gap:14px}
    .scene-row{display:flex;gap:18px;align-items:flex-start;padding:23px 25px;background:#fff;border:1px solid var(--line);border-radius:19px;box-shadow:0 12px 28px rgba(36,68,133,.045)}
    .scene-row i{display:grid;place-items:center;flex:none;width:43px;height:43px;border-radius:13px;background:var(--pale);color:var(--blue)}
    .scene-row h3{margin:0 0 5px;font-size:16px;font-weight:750}
    .scene-row p{margin:0;font-size:13px;line-height:1.8;color:var(--muted)}
    .proof-band{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;overflow:hidden;border:1px solid var(--line);border-radius:22px;background:var(--line);box-shadow:var(--shadow)}
    .proof-cell{padding:31px;background:#fff}
    .proof-cell i{font-size:22px;color:var(--blue)}
    .proof-cell h3{margin:14px 0 7px;font-size:16px;font-weight:760}
    .proof-cell p{margin:0;color:var(--muted);font-size:13px;line-height:1.85}
    .compare-wrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:36px;align-items:start}
    .compare-board{overflow:hidden;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    .compare-line{display:grid;grid-template-columns:125px 1fr;gap:22px;padding:19px 24px;border-bottom:1px solid var(--line)}
    .compare-line:last-child{border-bottom:0}
    .compare-line strong{font-size:14px}
    .compare-line span{color:var(--muted);font-size:14px}
    .news-list{overflow:hidden;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    .news-item{display:grid;grid-template-columns:125px 1fr auto;gap:20px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line)}
    .news-item:last-child{border-bottom:0}
    .news-item h3{margin:0 0 4px;font-size:17px}
    .news-item p{margin:0;font-size:13px;color:var(--muted)}
    .news-arrow{color:#8498ba}
    .news-item:hover{background:#f8faff}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:17px;box-shadow:0 8px 24px rgba(34,62,121,.04)}
    .faq-item summary{display:flex;justify-content:space-between;gap:15px;align-items:center;padding:19px 22px;font-weight:750;font-size:15px;cursor:pointer;list-style:none}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--blue)}
    .faq-item[open] summary::after{content:"−"}
    .faq-item p{margin:0;padding:0 22px 21px;color:var(--muted);font-size:14px;line-height:1.85}
    .download-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:38px 42px;border-radius:26px;background:#fff;border:1px solid #d7e3fb;box-shadow:var(--shadow)}
    .download-box h2{margin:9px 0 9px;font-size:clamp(25px,3vw,37px);line-height:1.3;font-weight:800}
    .download-box p{margin:0;max-width:650px;color:var(--muted);font-size:14px}
    .fixed-cta{position:fixed;z-index:35;left:0;right:0;bottom:0;background:rgba(255,255,255,.96);border-top:1px solid var(--line);box-shadow:0 -10px 38px rgba(23,48,104,.08);backdrop-filter:blur(14px)}
    .fixed-cta-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .fixed-cta strong{display:block;font-size:15px}
    .fixed-cta span{color:var(--muted);font-size:12px}
    @media(max-width:1024px){
      .nav-shell{gap:14px}.nav-links a{padding:9px 10px}
      .hero-top{gap:28px}.signal{grid-template-columns:repeat(2,1fr)}
      .badge-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      :root{--space:70px}
      .nav-shell{min-height:70px;flex-wrap:wrap;padding:12px 0;gap:10px}
      .nav-links{order:3;width:100%;margin-left:0;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
      .nav-links::-webkit-scrollbar{display:none}
      .nav-action{margin-left:auto}
      .hero{padding:58px 0 68px}.hero-top,.split-layout,.compare-wrap{grid-template-columns:1fr}
      .status-panel{max-width:640px}.three-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .proof-band{grid-template-columns:1fr}.faq-list{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr;gap:25px}.footer-links{justify-content:flex-start;max-width:none}
      html{scroll-padding-top:130px}
    }
    @media(max-width:520px){
      .container{width:min(100% - 32px,1180px)}
      .logo{font-size:20px}.nav-action{padding:9px 13px!important;font-size:12px}
      .nav-links{gap:2px}.nav-links a{font-size:12px;padding:8px 10px}
      .hero h1{font-size:39px}.hero-lead{font-size:14px}
      .hero-actions .btn{flex:1;min-width:135px;padding:12px 14px}
      .hero-strip{gap:10px 20px;padding:16px}.status-panel{padding:18px}
      .three-grid,.badge-grid{grid-template-columns:1fr}.feature-card{min-height:0}
      .scene-row{padding:19px}.proof-cell{padding:23px}
      .compare-line{grid-template-columns:1fr;gap:5px;padding:16px 19px}
      .news-item{grid-template-columns:1fr auto;gap:5px 12px;padding:19px}
      .news-item .pill{grid-column:1/-1;justify-self:start}.news-item h3{font-size:15px}
      .download-box{display:block;padding:27px}.download-box .btn{margin-top:20px}
      .fixed-cta-inner{min-height:72px}.fixed-cta span{display:none}
      .fixed-cta .btn{padding:11px 13px;font-size:12px}
      .footer-bottom{display:grid}
    }
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* roulang page: category2 */
:root{--bg:#f4f7ff;--surface:#fff;--surface-soft:#edf3ff;--ink:#14233f;--muted:#596a84;--line:#dce5f3;--blue:#335de4;--blue-dark:#254ac5;--pale:#e7eeff;--navy:#142446;--radius:24px;--shadow:0 18px 50px rgba(36,68,133,.09);--space:clamp(72px,8vw,116px)}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;padding-bottom:76px;background:var(--bg);color:var(--ink);font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,border-color .2s}
button{font:inherit;cursor:pointer}
img{max-width:100%;display:block}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #83a5ff;outline-offset:4px}
.container{width:min(1180px,calc(100% - 48px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:40;background:rgba(248,250,255,.94);border-bottom:1px solid rgba(220,229,243,.85);backdrop-filter:blur(18px)}
.nav-shell{min-height:78px;display:flex;align-items:center;gap:36px}
.logo{display:inline-flex;align-items:center;gap:11px;font-size:22px;font-weight:850;letter-spacing:-.05em;white-space:nowrap}
.logo-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:var(--blue);color:#fff;box-shadow:0 7px 18px rgba(51,93,228,.22);font-size:18px}
.nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
.nav-links a{padding:9px 16px;border-radius:11px;color:var(--muted);font-size:14px;font-weight:650;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--pale)}
.nav-action{white-space:nowrap;padding:10px 19px!important}
.menu-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid transparent;border-radius:13px;padding:13px 22px;font-size:14px;font-weight:750;line-height:1.25;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(51,93,228,.19)}
.btn-primary:hover{background:var(--blue-dark);box-shadow:0 14px 27px rgba(51,93,228,.25);color:#fff}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:#a9bef9;color:var(--blue)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:780;font-size:13px;letter-spacing:.08em}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:#6486ff;box-shadow:0 0 0 5px #e6edff}
.section{padding:var(--space) 0;border-bottom:1px solid var(--line)}
.section-white{background:#fff}
.section-blue{background:#edf3ff}
.section-heading{max-width:700px;margin-bottom:32px}
.section-heading h2{margin:12px 0 14px;font-size:clamp(27px,3.2vw,42px);line-height:1.25;letter-spacing:-.045em;font-weight:800}
.section-heading p,.section-intro{margin:0;color:var(--muted);font-size:15px;line-height:1.95}
.hero{padding:72px 0 83px;overflow:hidden;background:radial-gradient(circle at 85% 10%,#dfe9ff 0,transparent 34%),linear-gradient(180deg,#f8faff 0%,#f2f6ff 100%)}
.hero-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:65px;align-items:center}
.hero-lead{max-width:650px;font-size:16px;color:#50617c;line-height:2;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-note{display:flex;align-items:center;gap:9px;margin-top:21px;color:#667892;font-size:13px}
.hero-note i{color:var(--blue)}
.hero-art{position:relative;min-height:360px;overflow:hidden;border-radius:30px;background:#142b60;box-shadow:0 32px 70px rgba(23,51,108,.23)}
.hero-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.64}
.hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(19,39,87,.24),rgba(16,39,92,.88))}
.hero-strip{margin-top:44px;padding:17px 22px;display:flex;align-items:center;flex-wrap:wrap;gap:14px 32px;border:1px solid #dce6f9;background:rgba(255,255,255,.8);border-radius:17px;color:#546684;font-size:13px;box-shadow:0 10px 30px rgba(31,65,138,.04)}
.hero-strip strong{color:var(--ink)}
.hero-strip i{margin-right:8px;color:var(--blue)}
.three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-5px);box-shadow:0 24px 55px rgba(37,67,124,.14);border-color:#b9caf7}
.feature-card{padding:28px;min-height:250px}
.feature-icon{display:grid;place-items:center;width:48px;height:48px;margin-bottom:27px;border-radius:15px;background:#e9efff;color:var(--blue);font-size:20px}
.feature-card h3,.check-card h3{font-size:18px;line-height:1.4;margin:0 0 11px;font-weight:760}
.feature-card p,.check-card p,.price-card p{margin:0;font-size:14px;line-height:1.85;color:var(--muted)}
.check-layout .section-heading{position:sticky;top:110px}
.check-list{display:grid;gap:13px}
.check-card{display:flex;gap:17px;padding:22px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px rgba(34,62,121,.04)}
.badge-band{background:#172b53;color:#fff}
.badge-band .section-heading p{color:#bac9e3}
.badge-band .eyebrow{color:#aebfff}
.badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.assurance-badge{border:1px solid rgba(255,255,255,.17);background:rgba(255,255,255,.055);border-radius:18px;padding:24px 21px;min-height:175px}
.assurance-badge i{font-size:21px;color:#9eb8ff}
.assurance-badge strong{display:block;font-size:16px;margin:16px 0 6px}
.assurance-badge span{display:block;color:#bbc9e1;font-size:13px;line-height:1.7}
.clean-list{padding:0;margin:0;list-style:none;display:grid;gap:13px}
.clean-list li{position:relative;padding-left:24px;color:#405371;font-size:14px;line-height:1.7}
.clean-list li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
.news-list{overflow:hidden;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
.news-item{display:grid;grid-template-columns:125px 1fr auto;gap:20px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line)}
.news-item:last-child{border-bottom:0}
.news-item h3{margin:0 0 4px;font-size:17px}
.news-item p{margin:0;font-size:13px;color:var(--muted)}
.news-arrow{color:#8498ba}
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.faq-item{align-self:start;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 8px 26px rgba(36,68,133,.05);overflow:hidden}
.faq-item summary{position:relative;padding:21px 49px 21px 22px;list-style:none;font-size:15px;font-weight:750;cursor:pointer}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";position:absolute;right:20px;top:19px;color:var(--blue);font-size:20px}
.faq-item[open] summary::after{content:"−"}
.faq-item p{margin:0;padding:0 22px 22px;color:var(--muted);font-size:14px;line-height:1.85}
.site-footer{background:#101f3c;color:#eaf0ff;padding:66px 0 24px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:55px;padding-bottom:48px}
.footer-logo{color:#fff}
.footer-desc{max-width:510px;margin:21px 0 0;color:#afc0df;font-size:14px;line-height:1.9}
.footer-links{display:flex;align-content:start;justify-content:flex-end;flex-wrap:wrap;gap:12px 26px}
.footer-links a{color:#c1cee7;font-size:14px}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;display:flex;justify-content:space-between;gap:16px;color:#9baccc;font-size:12px}
.page-hero h1{max-width:720px;margin:19px 0 22px;font-size:clamp(38px,5vw,64px);line-height:1.16;letter-spacing:-.06em;font-weight:850}
.page-hero .hero-top{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:48px}
.hero-visual{position:relative;isolation:isolate;min-height:400px;border-radius:30px;overflow:hidden;background:#152b57;box-shadow:0 28px 65px rgba(28,59,118,.2)}
.hero-visual>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero-visual::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(155deg,rgba(17,39,89,.18),rgba(10,27,65,.96))}
.quick-panel{position:relative;z-index:2;padding:32px;display:flex;flex-direction:column;justify-content:space-between;min-height:400px}
.quick-panel>p{color:#dce6ff;font-size:13px;font-weight:700;letter-spacing:.08em}
.quick-panel h2{color:#fff;font-size:clamp(25px,3vw,34px);font-weight:800;line-height:1.35;letter-spacing:-.04em;max-width:320px}
.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin-top:28px}
.quick-item{padding:16px;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.1);backdrop-filter:blur(8px);border-radius:16px;color:#fff}
.quick-item i{color:#9dbbff;margin-right:8px}
.quick-item strong{font-size:15px}
.quick-item span{display:block;color:#c7d6f5;font-size:12px;margin-top:3px}
.context-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:center}
.context-visual{padding:28px;background:var(--navy);color:#fff;border-radius:28px;box-shadow:var(--shadow)}
.context-visual .mini-label{color:#a9c2ff;font-size:13px;font-weight:700}
.context-visual strong{display:block;font-size:27px;line-height:1.35;margin:15px 0 27px}
.context-row{display:flex;justify-content:space-between;gap:12px;padding:15px 0;border-top:1px solid rgba(255,255,255,.18);font-size:14px}
.context-row span{color:#b9c9e5}
.context-row b{font-weight:650}
.scenario-list{display:grid;gap:18px}
.scenario{display:flex;gap:17px;align-items:flex-start}
.scenario-number{display:grid;place-items:center;flex:none;width:39px;height:39px;border-radius:12px;background:#e8efff;color:var(--blue);font-weight:800}
.scenario h3{font-size:17px;font-weight:750;margin:0 0 3px}
.scenario p{color:var(--muted);font-size:14px;margin:0}
.plan-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.price-card{padding:25px 22px;display:flex;flex-direction:column;min-height:328px}
.price-card.highlight{background:#172d5a;border-color:#172d5a;color:#fff}
.price-card.highlight p,.price-card.highlight .plan-caption{color:#c1d0ed}
.plan-chip{align-self:flex-start;background:var(--pale);border-radius:99px;padding:5px 11px;color:var(--blue);font-size:12px;font-weight:750}
.highlight .plan-chip{background:rgba(255,255,255,.14);color:#d6e3ff}
.price-card h3{font-size:27px;margin:23px 0 5px;font-weight:800}
.plan-caption{font-size:13px;color:var(--muted);margin-bottom:17px}
.price-card .plan-rule{border-top:1px solid var(--line);padding-top:18px;margin-top:auto;font-size:13px;line-height:1.7;color:var(--muted)}
.highlight .plan-rule{border-color:rgba(255,255,255,.2);color:#d0dcf3}
.fine-print{color:var(--muted);font-size:13px;line-height:1.8;margin:21px 0 0}
.compare-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:55px;align-items:start}
.compare-layout .section-heading{margin-bottom:0}
.compare-list{display:grid;gap:13px}
.compare-item{display:grid;grid-template-columns:48px 1fr;gap:17px;align-items:start;border:1px solid var(--line);background:#fff;border-radius:18px;padding:21px;box-shadow:0 8px 22px rgba(36,68,133,.04)}
.compare-item i{width:45px;height:45px;display:grid;place-items:center;border-radius:14px;background:#e9efff;color:var(--blue)}
.compare-item h3{font-weight:750;font-size:16px;margin:0 0 4px}
.compare-item p{font-size:13px;color:var(--muted);margin:0}
.boundary-layout{display:grid;grid-template-columns:1fr 1fr;gap:19px}
.boundary-card{padding:30px}
.boundary-card h3{font-size:21px;font-weight:800;margin:0 0 10px}
.boundary-card>p{color:var(--muted);font-size:14px;margin:0 0 24px}
.boundary-card .clean-list{border-top:1px solid var(--line);padding-top:20px}
.boundary-card.dark{background:#eaf1ff}
.assurance-strip{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:27px 32px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
.assurance-strip strong{font-size:19px}
.assurance-strip p{margin:4px 0 0;color:var(--muted);font-size:14px}
.assurance-strip i{font-size:30px;color:var(--blue)}
.conversion-bar{position:fixed;left:0;right:0;bottom:0;z-index:35;background:rgba(18,35,68,.97);color:#fff;box-shadow:0 -12px 40px rgba(18,35,68,.14);backdrop-filter:blur(12px)}
.conversion-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.conversion-inner strong{font-size:15px}
.conversion-inner span{color:#becee9;font-size:13px;margin-left:12px}
.conversion-inner .btn{padding:10px 18px}
@media(max-width:1024px){.nav-shell{gap:18px}.nav-links a{padding:8px 10px}.hero-top,.page-hero .hero-top{gap:28px}.plan-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.context-layout,.compare-layout{gap:30px}}
@media(max-width:768px){.nav-shell{min-height:70px;flex-wrap:wrap;gap:10px}.menu-toggle{display:inline-flex;margin-left:auto}.nav-action{margin-left:0}.nav-links{display:none;order:4;width:100%;margin:0 0 14px;padding:9px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.is-open{display:flex}.nav-links a{padding:11px 14px}.hero-top,.page-hero .hero-top,.context-layout,.compare-layout,.boundary-layout{grid-template-columns:1fr}.page-hero{padding:54px 0 65px}.hero-visual,.quick-panel{min-height:330px}.three-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr;gap:26px}.footer-links{justify-content:flex-start}.faq-list{grid-template-columns:1fr}.badge-grid{grid-template-columns:repeat(2,1fr)}.conversion-inner span{display:none}}
@media(max-width:520px){body{padding-bottom:70px}.container{width:min(100% - 32px,1180px)}.nav-shell{gap:8px}.logo{font-size:19px}.logo-icon{width:34px;height:34px}.nav-action{padding:9px 12px!important;font-size:12px}.page-hero h1{font-size:clamp(34px,10vw,46px)}.hero-actions .btn{flex:1;min-width:135px;padding:12px}.hero-visual,.quick-panel{min-height:345px}.quick-panel{padding:23px}.quick-item{padding:12px}.hero-strip{gap:8px 18px}.three-grid,.plan-grid,.badge-grid{grid-template-columns:1fr}.feature-card{min-height:auto}.section{padding:68px 0}.footer-bottom{flex-direction:column}.assurance-strip{padding:23px;align-items:flex-start}.conversion-inner{min-height:70px}.conversion-inner strong{font-size:13px}.conversion-inner .btn{padding:10px 12px;font-size:12px;white-space:nowrap}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* roulang page: category3 */
:root{--bg:#f4f7ff;--surface:#fff;--surface-soft:#edf3ff;--ink:#14233f;--muted:#596a84;--line:#dce5f3;--blue:#335de4;--blue-dark:#254ac5;--pale:#e7eeff;--navy:#142446;--radius:24px;--shadow:0 18px 50px rgba(36,68,133,.09);--space:clamp(72px,8vw,116px)}
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:100px}
    body{margin:0;padding-bottom:76px;background:var(--bg);color:var(--ink);font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s,border-color .2s}
    button{font:inherit;cursor:pointer}
    img{max-width:100%;display:block}
    button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #83a5ff;outline-offset:4px}
    .container{width:min(1180px,calc(100% - 48px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(248,250,255,.94);border-bottom:1px solid rgba(220,229,243,.85);backdrop-filter:blur(18px)}
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:36px}
    .logo{display:inline-flex;align-items:center;gap:11px;font-size:22px;font-weight:850;letter-spacing:-.05em;white-space:nowrap}
    .logo-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:var(--blue);color:#fff;box-shadow:0 7px 18px rgba(51,93,228,.22);font-size:18px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 16px;border-radius:11px;color:var(--muted);font-size:14px;font-weight:650;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--pale)}
    .nav-action{white-space:nowrap;padding:10px 19px!important}
    .menu-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid transparent;border-radius:13px;padding:13px 22px;font-size:14px;font-weight:750;line-height:1.25;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(51,93,228,.19)}
    .btn-primary:hover{background:var(--blue-dark);box-shadow:0 14px 27px rgba(51,93,228,.25);color:#fff}
    .btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-outline:hover{border-color:#a9bef9;color:var(--blue)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:780;font-size:13px;letter-spacing:.08em}
    .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:#6486ff;box-shadow:0 0 0 5px #e6edff}
    .section{padding:var(--space) 0;border-bottom:1px solid var(--line)}
    .section-white{background:#fff}
    .section-blue{background:#edf3ff}
    .section-heading{max-width:700px;margin-bottom:32px}
    .section-heading h2{margin:12px 0 14px;font-size:clamp(27px,3.2vw,42px);line-height:1.25;letter-spacing:-.045em;font-weight:800}
    .section-heading p,.section-intro{margin:0;color:var(--muted);font-size:15px;line-height:1.95}
    .hero{padding:72px 0 83px;overflow:hidden;background:radial-gradient(circle at 85% 10%,#dfe9ff 0,transparent 34%),linear-gradient(180deg,#f8faff 0%,#f2f6ff 100%)}
    .hero-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:65px;align-items:center}
    .hero h1{margin:18px 0 19px;font-size:clamp(38px,5.3vw,68px);line-height:1.15;letter-spacing:-.065em;font-weight:850}
    .hero-lead{max-width:650px;font-size:16px;color:#50617c;line-height:2;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .hero-note{display:flex;align-items:center;gap:9px;margin-top:21px;color:#667892;font-size:13px}
    .hero-note i{color:var(--blue)}
    .hero-points{list-style:none;padding:0;margin:26px 0 0;display:flex;flex-wrap:wrap;gap:10px 20px;color:#405371;font-size:14px}
    .hero-points li i{color:var(--blue);margin-right:7px}
    .hero-strip{margin-top:44px;padding:17px 22px;display:flex;align-items:center;flex-wrap:wrap;gap:14px 32px;border:1px solid #dce6f9;background:rgba(255,255,255,.8);border-radius:17px;color:#546684;font-size:13px;box-shadow:0 10px 30px rgba(31,65,138,.04)}
    .hero-strip strong{color:var(--ink)}
    .hero-strip i{margin-right:8px;color:var(--blue)}
    .three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s}
    .card:hover{transform:translateY(-5px);box-shadow:0 24px 55px rgba(37,67,124,.14);border-color:#b9caf7}
    .feature-card{padding:28px;min-height:250px}
    .feature-icon{display:grid;place-items:center;width:48px;height:48px;margin-bottom:27px;border-radius:15px;background:#e9efff;color:var(--blue);font-size:20px}
    .feature-card h3,.check-card h3{font-size:18px;line-height:1.4;margin:0 0 11px;font-weight:760}
    .feature-card p,.check-card p{margin:0;font-size:14px;line-height:1.85;color:var(--muted)}
    .clean-list{padding:0;margin:0;list-style:none;display:grid;gap:13px}
    .clean-list li{position:relative;padding-left:24px;color:#405371;font-size:14px;line-height:1.7}
    .clean-list li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
    .check-list{display:grid;gap:13px}
    .check-card{display:flex;gap:17px;padding:22px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px rgba(34,62,121,.04)}
    .badge-band{background:#172b53;color:#fff}
    .badge-band .section-heading p{color:#bac9e3}
    .badge-band .eyebrow{color:#aebfff}
    .badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .assurance-badge{border:1px solid rgba(255,255,255,.17);background:rgba(255,255,255,.055);border-radius:18px;padding:24px 21px;min-height:175px}
    .assurance-badge i{font-size:21px;color:#9eb8ff}
    .assurance-badge strong{display:block;font-size:16px;margin:16px 0 6px}
    .assurance-badge span{display:block;color:#bbc9e1;font-size:13px;line-height:1.7}
    .news-list{overflow:hidden;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    .news-item{display:grid;grid-template-columns:125px 1fr auto;gap:20px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line)}
    .news-item:last-child{border-bottom:0}
    .news-item h3{margin:0 0 4px;font-size:17px}
    .news-item p{margin:0;font-size:13px;color:var(--muted)}
    .news-arrow{color:#8498ba}
    .hero-panel{position:relative;isolation:isolate;overflow:hidden;min-height:410px;padding:30px;border-radius:30px;background:#142b60;color:#fff;box-shadow:0 32px 70px rgba(23,51,108,.23)}
    .hero-panel::before{content:"";position:absolute;z-index:-1;inset:0;background:radial-gradient(circle at 78% 18%,rgba(103,144,255,.43),transparent 35%),radial-gradient(circle at 18% 83%,rgba(66,105,216,.34),transparent 42%)}
    .panel-label{font-size:13px;color:#bed0ff;font-weight:700}
    .panel-title{margin:12px 0 26px;font-size:25px;font-weight:800;line-height:1.35}
    .panel-line{display:flex;align-items:center;gap:14px;padding:17px 18px;margin-top:11px;border:1px solid rgba(255,255,255,.16);border-radius:17px;background:rgba(255,255,255,.09);backdrop-filter:blur(8px)}
    .panel-line i{display:grid;place-items:center;flex:none;width:35px;height:35px;border-radius:11px;background:rgba(146,176,255,.2);color:#b5c9ff}
    .panel-line strong{display:block;font-size:14px}
    .panel-line small{display:block;color:#bccbef;font-size:12px;margin-top:2px}
    .panel-foot{margin-top:24px;color:#c2d2f5;font-size:12px}
    .scene-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:56px;align-items:center}
    .scene-visual{position:relative;min-height:390px;overflow:hidden;border-radius:28px;background:#12294f}
    .scene-visual img{width:100%;height:390px;object-fit:cover;opacity:.74}
    .scene-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(12,30,65,.83))}
    .scene-caption{position:absolute;z-index:1;left:26px;right:26px;bottom:23px;color:#fff;font-size:15px;font-weight:700}
    .scene-caption i{margin-right:9px;color:#adc1ff}
    .scene-copy .section-heading{margin-bottom:25px}
    .scene-copy .clean-list{padding:22px 25px;border:1px solid var(--line);border-radius:19px;background:#fff}
    .compare-layout{display:grid;grid-template-columns:.76fr 1.24fr;gap:50px;align-items:start}
    .compare-layout .section-heading{margin-bottom:0}
    .compare-table{overflow:hidden;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    .compare-row{display:grid;grid-template-columns:125px 1fr;gap:18px;padding:21px 24px;border-bottom:1px solid var(--line);font-size:14px}
    .compare-row:last-child{border-bottom:0}
    .compare-row strong{color:var(--ink)}
    .compare-row span{color:var(--muted)}
    .news-tag{display:inline-flex;align-items:center;justify-content:center;min-width:93px;padding:7px 10px;border-radius:10px;background:var(--pale);color:var(--blue);font-size:12px;font-weight:760}
    .news-item:hover .news-arrow{color:var(--blue);transform:translateX(3px)}
    .faq-layout{display:grid;grid-template-columns:.76fr 1.24fr;gap:55px;align-items:start}
    .faq-list{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);border-radius:17px;background:#fff;box-shadow:0 8px 24px rgba(34,62,121,.04)}
    .faq-item[open]{border-color:#bdcdf9;box-shadow:var(--shadow)}
    .faq-item summary{position:relative;list-style:none;padding:20px 52px 20px 22px;font-weight:740;cursor:pointer}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"+";position:absolute;right:22px;top:16px;color:var(--blue);font-size:25px;font-weight:400}
    .faq-item[open] summary::after{content:"−"}
    .faq-item p{margin:0;padding:0 22px 22px;color:var(--muted);font-size:14px;line-height:1.9}
    .download-box{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:40px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .download-box h2{margin:10px 0;font-size:clamp(25px,3vw,36px);line-height:1.3;font-weight:800}
    .download-box p{margin:0;max-width:700px;font-size:14px;color:var(--muted)}
    .download-status{flex:none;display:inline-flex;gap:9px;align-items:center;border-radius:12px;padding:12px 16px;background:var(--pale);color:var(--blue);font-size:13px;font-weight:750}
    .site-footer{background:#101e3a;color:#dbe5fa;padding:56px 0 24px}
    .footer-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:48px;padding-bottom:45px}
    .footer-logo{color:#fff}
    .footer-desc{max-width:560px;margin:17px 0 0;color:#aebdd8;font-size:13px;line-height:1.9}
    .footer-links{display:flex;flex-wrap:wrap;align-content:start;gap:12px 24px;max-width:390px;padding-top:8px}
    .footer-links a{color:#c3d0e9;font-size:13px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:15px;padding-top:23px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#93a5c5}
    .fixed-action{position:fixed;z-index:35;left:0;right:0;bottom:0;background:rgba(255,255,255,.97);border-top:1px solid var(--line);box-shadow:0 -10px 30px rgba(25,54,111,.08);backdrop-filter:blur(14px)}
    .fixed-action .container{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .fixed-action strong{display:block;font-size:15px;line-height:1.35}
    .fixed-action span{display:block;color:var(--muted);font-size:12px}
    @media(max-width:1024px){
      .nav-shell{gap:18px}.nav-links a{padding:9px 11px}
      .hero-top{gap:30px}.scene-layout,.compare-layout,.faq-layout{gap:30px}
      .badge-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .nav-shell{min-height:70px;flex-wrap:wrap;gap:10px}
      .menu-toggle{display:inline-flex;margin-left:auto}
      .nav-shell>.nav-action{margin-left:0}
      .nav-links{display:none;order:4;width:100%;margin:0 0 12px;padding:9px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.is-open{display:flex}
      .nav-links a{padding:12px 14px}
      .hero{padding:55px 0 65px}.hero-top,.scene-layout,.compare-layout,.faq-layout{grid-template-columns:1fr}
      .hero-panel{min-height:0}.three-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .scene-visual{min-height:310px}.scene-visual img{height:310px}
      .section{padding:72px 0}.footer-grid{grid-template-columns:1fr;gap:25px}
    }
    @media(max-width:520px){
      body{padding-bottom:72px}.container{width:min(100% - 32px,1180px)}
      .logo{font-size:20px}.nav-shell>.nav-action{padding:9px 12px!important;font-size:12px}
      .hero h1{font-size:clamp(35px,10vw,48px)}.hero-lead{font-size:14px}
      .hero-actions .btn{flex:1;padding:13px 12px}.hero-points{display:grid;gap:7px}
      .hero-panel{padding:23px;border-radius:23px}.panel-title{font-size:21px}
      .hero-strip{gap:10px 20px;margin-top:27px}
      .three-grid,.badge-grid{grid-template-columns:1fr}
      .feature-card{min-height:0}.section{padding:64px 0}
      .compare-row{grid-template-columns:1fr;gap:4px;padding:17px 20px}
      .news-item{grid-template-columns:1fr auto;gap:7px;padding:20px}
      .news-item .news-tag{grid-column:1/-1;justify-self:start}.news-item p{line-height:1.7}
      .download-box{flex-direction:column;align-items:flex-start;padding:27px}
      .footer-bottom{flex-direction:column}.fixed-action .container{min-height:72px}
      .fixed-action strong{font-size:13px}.fixed-action span{display:none}
      .fixed-action .btn{padding:11px 13px;font-size:12px;white-space:nowrap}
    }
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}