/* roulang page: index */
:root{
            --blue:#1769e0;
            --blue-deep:#0d4db3;
            --blue-soft:#eaf3ff;
            --cyan:#16b8b0;
            --purple:#7568e8;
            --ink:#17263d;
            --muted:#68768b;
            --line:#dce6f2;
            --paper:#ffffff;
            --wash:#f5f8fc;
            --warm:#fbfcfe;
            --shadow:0 16px 38px rgba(35,75,125,.10);
            --shadow-sm:0 8px 22px rgba(35,75,125,.08);
            --radius:16px;
            --radius-lg:24px;
            --container:1220px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{
            font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
            color:var(--ink);background:var(--warm);line-height:1.75;
            -webkit-font-smoothing:antialiased;
        }
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input{font:inherit}
        button{border:0;cursor:pointer}
        :focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:4px}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.08em}
        .eyebrow:before{content:"";width:22px;height:2px;background:var(--blue)}
        h1,h2,h3{line-height:1.25;letter-spacing:-.02em}
        h1{font-size:clamp(40px,5vw,70px);font-weight:800}
        h2{font-size:clamp(28px,3.2vw,42px);font-weight:800}
        h3{font-size:20px;font-weight:750}
        .section{padding:108px 0;position:relative}
        .section.alt{background:var(--wash)}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:42px}
        .section-head p{max-width:560px;color:var(--muted);font-size:15px;line-height:1.9}
        .section-title{margin-top:14px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:700;transition:.25s ease;border:1px solid transparent}
        .btn-primary{background:var(--blue);color:#fff;box-shadow:0 9px 18px rgba(23,105,224,.2)}
        .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(23,105,224,.28)}
        .btn-light{background:#fff;color:var(--blue);border-color:var(--line)}
        .btn-light:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
        .btn-text{color:var(--blue);padding:0;min-height:auto}
        .btn-text:hover{color:var(--blue-deep);gap:13px}
        .tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:700}
        .tag.green{background:#e6f8f4;color:#087f78}
        .tag.purple{background:#eeecff;color:#6556c8}
        .tag.gray{background:#f0f3f7;color:#69778a}
        .topbar{height:76px;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,230,242,.8);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:850;letter-spacing:-.04em;color:var(--ink)}
        .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--blue);position:relative;box-shadow:0 7px 14px rgba(23,105,224,.2)}
        .brand-mark:after{content:"";position:absolute;left:12px;top:9px;border-left:11px solid #fff;border-top:8px solid transparent;border-bottom:8px solid transparent}
        .nav-links{display:flex;align-items:center;gap:30px;margin-left:auto}
        .nav-links a{font-size:14px;color:#536177;position:relative;padding:26px 0}
        .nav-links a:hover,.nav-links a.active{color:var(--blue)}
        .nav-links a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--blue);border-radius:3px}
        .nav-action{margin-left:8px}
        .menu-toggle{display:none;background:transparent;color:var(--ink);font-size:26px}
        .hero{min-height:650px;padding:76px 0 92px;overflow:hidden;background:#edf5ff;position:relative}
        .hero:before{content:"";position:absolute;width:460px;height:460px;border:1px solid rgba(23,105,224,.12);border-radius:50%;right:-90px;top:-130px}
        .hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(237,245,255,.94) 0%,rgba(237,245,255,.84) 43%,rgba(237,245,255,.18) 100%);pointer-events:none}
        .hero-bg{position:absolute;inset:0;background:url('/assets/images/aced0faf49edca18.jpg') center/cover no-repeat;opacity:.18}
        .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr .98fr;gap:72px;align-items:center}
        .hero-copy{max-width:650px}
        .hero h1{margin:20px 0 22px;max-width:620px}
        .hero-lead{font-size:17px;line-height:1.9;color:#52637a;max-width:630px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
        .hero-facts{display:flex;gap:28px;margin-top:38px;flex-wrap:wrap}
        .fact{display:flex;align-items:center;gap:10px;color:#536177;font-size:13px}
        .fact strong{display:block;color:var(--ink);font-size:20px;line-height:1.2}
        .hero-panel{position:relative;background:#fff;border:1px solid #d7e5f5;border-radius:24px;padding:16px;box-shadow:0 24px 55px rgba(45,92,148,.16);transform:rotate(1deg)}
        .hero-image{height:390px;overflow:hidden;border-radius:16px;position:relative;background:#dcecff}
        .hero-image img{width:100%;height:100%;object-fit:cover}
        .hero-overlay{position:absolute;left:18px;right:18px;bottom:18px;padding:18px;border-radius:13px;background:rgba(10,37,75,.83);color:#fff}
        .hero-overlay strong{font-size:20px;display:block;margin-bottom:5px}
        .hero-overlay span{font-size:13px;color:#cfdded}
        .panel-chip{position:absolute;top:30px;right:28px;background:#fff;color:var(--blue);border-radius:9px;padding:8px 12px;font-size:12px;font-weight:700;box-shadow:var(--shadow-sm)}
        .feature-grid{display:grid;grid-template-columns:1.25fr .9fr .9fr;grid-auto-rows:minmax(190px,auto);gap:18px}
        .feature-card,.content-card,.price-card,.quote-card,.news-card,.category-box{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.25s ease}
        .feature-card:hover,.content-card:hover,.price-card:hover,.news-card:hover,.category-box:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .feature-card{padding:28px;position:relative;overflow:hidden}
        .feature-card.large{grid-row:span 2;background:linear-gradient(145deg,#fff 0%,#eef6ff 100%)}
        .feature-card .icon{width:44px;height:44px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-size:19px;font-weight:800;margin-bottom:28px}
        .feature-card h3{margin-bottom:10px}
        .feature-card p{color:var(--muted);font-size:14px;line-height:1.8}
        .feature-card .line{position:absolute;right:24px;bottom:24px;width:80px;height:1px;background:#b9d5f8}
        .feature-card .line:after{content:"";display:block;width:26px;height:3px;background:var(--blue);margin-top:-1px}
        .scene-band{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .scene-item{padding:28px 24px;border-right:1px solid var(--line);position:relative}
        .scene-item:last-child{border-right:0}
        .scene-num{font-size:13px;color:var(--blue);font-weight:800;margin-bottom:22px}
        .scene-item h3{font-size:18px;margin-bottom:10px}
        .scene-item p{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:15px}
        .stage{display:grid;grid-template-columns:.78fr 1.22fr;gap:34px;align-items:stretch}
        .stage-menu{display:flex;flex-direction:column;gap:12px}
        .stage-tab{padding:19px 20px;background:#fff;border:1px solid var(--line);border-radius:12px;text-align:left;color:var(--muted);transition:.2s}
        .stage-tab:hover,.stage-tab.active{border-color:#9bc4f4;color:var(--blue);background:var(--blue-soft)}
        .stage-tab strong{display:block;color:inherit;margin-bottom:3px}
        .stage-tab span{font-size:12px}
        .screen{background:#102b52;border-radius:20px;padding:13px;box-shadow:var(--shadow);min-height:390px}
        .screen-top{height:30px;display:flex;align-items:center;gap:6px;padding:0 8px}
        .dot{width:7px;height:7px;border-radius:50%;background:#8fa6c5}
        .screen-body{height:335px;border-radius:12px;overflow:hidden;position:relative;background:#dbeaff}
        .screen-body img{width:100%;height:100%;object-fit:cover;opacity:.88}
        .screen-label{position:absolute;left:20px;bottom:20px;right:20px;background:rgba(13,39,75,.88);padding:16px;border-radius:10px;color:#fff}
        .screen-label b{display:block;margin-bottom:4px}
        .screen-label small{color:#c9daed}
        .case-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
        .case-main,.case-small{position:relative;overflow:hidden;border-radius:18px;min-height:350px;background:#17375f;color:#fff}
        .case-small{min-height:166px}
        .case-stack{display:grid;gap:18px}
        .case-main img,.case-small img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.58}
        .case-main:after,.case-small:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(9,28,56,.92),rgba(9,28,56,.03))}
        .case-text{position:absolute;z-index:1;left:26px;right:26px;bottom:24px}
        .case-text h3{font-size:24px;margin:12px 0 8px}
        .case-text p{font-size:13px;color:#d6e2f1;line-height:1.75}
        .case-small .case-text h3{font-size:17px;margin:8px 0 4px}
        .case-small .case-text{left:18px;right:18px;bottom:17px}
        .price-grid{display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:18px;align-items:stretch}
        .price-card{padding:30px;position:relative}
        .price-card.featured{border:2px solid var(--blue);box-shadow:0 18px 38px rgba(23,105,224,.15)}
        .price-card.featured:before{content:"更适合持续关注更新";position:absolute;right:18px;top:18px;font-size:11px;color:var(--blue);background:var(--blue-soft);padding:5px 8px;border-radius:5px}
        .price-card h3{margin:18px 0 9px}
        .price-card p{font-size:13px;color:var(--muted);min-height:50px}
        .price-list{list-style:none;margin:24px 0 28px;border-top:1px solid var(--line);padding-top:17px}
        .price-list li{font-size:13px;color:#536177;margin:10px 0;padding-left:18px;position:relative}
        .price-list li:before{content:"✓";position:absolute;left:0;color:var(--cyan);font-weight:800}
        .quote-wall{display:grid;grid-template-columns:1fr 1.15fr .9fr;gap:18px;align-items:start}
        .quote-card{padding:24px}
        .quote-card:nth-child(2){margin-top:38px}
        .quote-card:nth-child(3){margin-top:12px}
        .quote-mark{font-size:30px;color:var(--blue);line-height:1;margin-bottom:13px}
        .quote-card p{font-size:15px;line-height:1.8;margin-bottom:18px}
        .user{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}
        .avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-weight:800}
        .feedback-track{display:flex;gap:14px;overflow:auto;padding:6px 2px 16px;scrollbar-width:thin}
        .feedback-pill{flex:0 0 230px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:17px 18px}
        .feedback-pill strong{display:block;font-size:14px;margin-bottom:7px}
        .feedback-pill span{font-size:12px;color:var(--muted)}
        .updates{display:grid;grid-template-columns:.75fr 1.25fr;gap:54px}
        .update-intro{padding-right:30px}
        .update-intro p{color:var(--muted);font-size:15px;line-height:1.9;margin-top:20px}
        .timeline{border-left:2px solid #cfe0f4;padding-left:28px}
        .timeline-item{position:relative;padding-bottom:26px}
        .timeline-item:last-child{padding-bottom:0}
        .timeline-item:before{content:"";position:absolute;width:10px;height:10px;background:var(--blue);border:3px solid #e5f1ff;border-radius:50%;left:-34px;top:7px}
        .timeline-meta{display:flex;gap:10px;align-items:center;margin-bottom:7px}
        .timeline-date{font-size:12px;color:var(--muted)}
        .timeline-item h3{font-size:17px;margin-bottom:4px}
        .timeline-item p{font-size:13px;color:var(--muted)}
        .category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:13px}
        .category-box{padding:22px 18px}
        .category-box strong{display:block;margin-bottom:6px}
        .category-box span{font-size:12px;color:var(--muted)}
        .flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
        .flow:before{content:"";position:absolute;left:8%;right:8%;top:25px;border-top:1px dashed #aec8e7}
        .flow-step{position:relative;text-align:center;padding:0 12px}
        .flow-no{position:relative;z-index:1;margin:0 auto 20px;width:50px;height:50px;border-radius:50%;display:grid;place-items:center;background:#fff;border:2px solid var(--blue);color:var(--blue);font-weight:800}
        .flow-step h3{font-size:16px;margin-bottom:8px}
        .flow-step p{font-size:12px;color:var(--muted);line-height:1.7}
        .faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
        .faq-item{border-bottom:1px solid var(--line)}
        .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;padding:22px 4px;background:transparent;color:var(--ink);font-weight:700}
        .faq-question span:last-child{color:var(--blue);font-size:22px;transition:.25s}
        .faq-answer{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;line-height:1.9;transition:max-height .3s ease}
        .faq-item.open .faq-answer{max-height:160px;padding:0 40px 22px 4px}
        .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
        .news-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .news-feature{padding:30px;background:linear-gradient(135deg,#eaf3ff,#fff);border:1px solid var(--line);border-radius:18px}
        .news-feature h3{font-size:25px;margin:18px 0 12px}
        .news-feature p,.news-item p{font-size:13px;color:var(--muted);line-height:1.8}
        .news-list{display:flex;flex-direction:column;gap:10px}
        .news-item{background:#fff;border:1px solid var(--line);border-radius:13px;padding:17px 19px;display:grid;grid-template-columns:80px 1fr auto;gap:12px;align-items:center}
        .news-item time{font-size:12px;color:var(--muted)}
        .news-item h3{font-size:15px;margin-bottom:3px}
        .news-item p{font-size:12px}
        .cta-section{padding:90px 0}
        .cta-box{position:relative;overflow:hidden;background:#123b70;border-radius:24px;padding:58px 64px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:40px}
        .cta-box:after{content:"";position:absolute;width:330px;height:330px;border:1px solid rgba(255,255,255,.16);border-radius:50%;right:-80px;top:-150px}
        .cta-box p{color:#c9d9ec;max-width:620px;margin-top:14px;font-size:15px}
        .cta-box .btn-light{position:relative;z-index:1;border:0}
        footer{background:#f0f4f9;border-top:1px solid var(--line);padding:54px 0 25px}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:42px}
        .footer-brand p{font-size:13px;color:var(--muted);max-width:300px;margin-top:14px}
        footer h3{font-size:14px;margin-bottom:14px}
        .footer-links{list-style:none;display:grid;gap:8px}
        .footer-links a{font-size:13px;color:var(--muted)}
        .footer-links a:hover{color:var(--blue)}
        .footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#8290a2;font-size:12px}
        .back-top{color:var(--blue);font-weight:700}
        @media(max-width:1100px){
            .hero-grid{gap:36px}.feature-grid{grid-template-columns:1fr 1fr}.feature-card.large{grid-row:span 1}.category-grid{grid-template-columns:repeat(3,1fr)}
        }
        @media(max-width:860px){
            .nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 24px 20px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow-sm)}
            .nav-links.open{display:flex}.nav-links a{padding:13px 0}.nav-links a.active:after{display:none}.nav-action{display:none}.menu-toggle{display:block}
            .hero-grid,.stage,.updates{grid-template-columns:1fr}.hero{padding-top:58px}.hero-panel{max-width:650px}.scene-band{grid-template-columns:1fr 1fr}.scene-item:nth-child(2){border-right:0}.scene-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
            .case-layout,.news-layout{grid-template-columns:1fr}.price-grid{grid-template-columns:1fr 1fr}.price-card.featured{order:-1}.quote-wall{grid-template-columns:1fr 1fr}.quote-card:nth-child(2),.quote-card:nth-child(3){margin-top:0}.flow{grid-template-columns:1fr 1fr;gap:28px}.flow:before{display:none}.footer-grid{grid-template-columns:1fr 1fr}
        }
        @media(max-width:576px){
            .container{width:min(100% - 32px,var(--container))}.section{padding:72px 0}.section-head{display:block;margin-bottom:30px}.section-head p{margin-top:16px}.hero{padding:46px 0 68px}.hero h1{font-size:38px}.hero-lead{font-size:15px}.hero-image{height:280px}.hero-facts{gap:17px}.feature-grid,.scene-band,.price-grid,.quote-wall,.category-grid,.flow{grid-template-columns:1fr}.scene-item{border-right:0!important;border-bottom:1px solid var(--line)}.scene-item:last-child{border-bottom:0}.case-main{min-height:300px}.case-small{min-height:190px}.screen{min-height:300px}.screen-body{height:245px}.news-item{grid-template-columns:1fr}.news-item .btn-text{justify-self:start}.cta-box{padding:38px 26px;display:block}.cta-box .btn{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:9px}
        }