/* roulang page: index */
:root{
      --ink:#101827;
      --muted:#697386;
      --soft:#f5f7fb;
      --line:#e5e9f1;
      --brand:#e74729;
      --brand-dark:#b92e1a;
      --gold:#f4b740;
      --navy:#172236;
      --white:#fff;
      --radius:18px;
      --shadow:0 18px 48px rgba(23,34,54,.10);
      --shadow-sm:0 8px 24px rgba(23,34,54,.07);
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container{max-width:1180px;padding:0 24px}
    .site-header{height:78px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(16px)}
    .nav-wrap{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:inline-flex;align-items:center;gap:11px;font-size:21px;font-weight:800;letter-spacing:0;color:var(--ink);white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:900;font-size:15px;box-shadow:0 5px 12px rgba(231,71,41,.28)}
    .main-nav{display:flex;align-items:center;gap:7px;margin-left:16px}
    .main-nav a{font-size:14px;color:var(--muted);padding:8px 14px;border-radius:9px}
    .main-nav a:hover,.main-nav a.active{color:var(--brand);background:#fff1ed}
    .nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
    .command-search{display:flex;align-items:center;width:205px;height:39px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;padding:0 12px;color:#9aa3b2}
    .command-search i{font-size:13px;margin-right:8px}
    .command-search input{border:0;outline:0;background:transparent;width:100%;font-size:13px;color:var(--ink)}
    .command-search input::placeholder{color:#a5adba}
    .shortcut{font-size:12px;color:#9aa3b2;border:1px solid var(--line);padding:1px 5px;border-radius:5px}
    .nav-button,.button-main{border:0;background:var(--brand);color:#fff;font-weight:700;border-radius:10px;padding:10px 17px;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 8px 18px rgba(231,71,41,.18)}
    .nav-button:hover,.button-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:transparent;color:var(--ink);font-size:22px}
    .hero{min-height:610px;position:relative;color:#fff;display:flex;align-items:flex-end;overflow:hidden;background:#111c2c url("https://images.unsplash.com/photo-1542751371-adc38448a05e?auto=format&fit=crop&w=2000&q=90") center/cover no-repeat}
    .hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,18,31,.92) 0%,rgba(10,18,31,.62) 48%,rgba(10,18,31,.12) 100%)}
    .hero-inner{position:relative;z-index:1;padding:92px 24px 62px}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;color:#ffd37a;font-size:13px;font-weight:700;letter-spacing:1px;margin-bottom:18px}
    .hero-kicker span{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 5px rgba(244,183,64,.16)}
    h1{font-size:clamp(42px,5.5vw,74px);line-height:1.12;letter-spacing:0;margin:0 0 24px;font-weight:850;max-width:720px}
    .hero-copy{max-width:660px;color:rgba(255,255,255,.83);font-size:18px;line-height:1.9;margin-bottom:31px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .button-light{display:inline-flex;align-items:center;gap:8px;color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:10px;padding:10px 17px;background:rgba(255,255,255,.09)}
    .button-light:hover{background:#fff;color:var(--ink)}
    .hero-stats{display:flex;gap:35px;margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.22);max-width:690px}
    .hero-stat strong{display:block;font-size:25px;line-height:1.2;color:#fff}
    .hero-stat small{color:rgba(255,255,255,.62);font-size:12px}
    .section{padding:92px 0}
    .section-soft{background:var(--soft)}
    .section-dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:38px}
    .section-kicker{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:1.7px;text-transform:uppercase;margin-bottom:8px}
    .section-dark .section-kicker{color:#f4b740}
    h2{font-size:clamp(29px,3.3vw,44px);line-height:1.25;letter-spacing:0;margin:0;font-weight:820}
    .section-intro{max-width:590px;color:var(--muted);margin:13px 0 0;line-height:1.85}
    .section-dark .section-intro{color:rgba(255,255,255,.68)}
    .text-link{color:var(--brand);font-weight:700;font-size:14px;white-space:nowrap}
    .text-link:hover{color:var(--brand-dark)}
    .series-bar{background:#fff;border:1px solid var(--line);border-radius:15px;padding:8px;box-shadow:var(--shadow-sm);display:flex;gap:7px;overflow:auto}
    .series-bar a{min-width:max-content;padding:13px 22px;border-radius:10px;color:var(--muted);font-weight:700;font-size:14px}
    .series-bar a:hover,.series-bar a.active{background:var(--brand);color:#fff}
    .feature-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
    .feature-main{min-height:370px;border-radius:var(--radius);overflow:hidden;position:relative;background:url("https://images.unsplash.com/photo-1550745165-9bc0b252726f?auto=format&fit=crop&w=1200&q=85") center/cover}
    .feature-main::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,16,29,.84),transparent 65%)}
    .feature-content{position:absolute;z-index:1;bottom:28px;left:30px;right:30px;color:#fff}
    .feature-content h3{font-size:28px;margin:0 0 8px}
    .feature-content p{margin:0;color:rgba(255,255,255,.75);font-size:14px}
    .recommend-list{display:grid;gap:14px}
    .recommend-item{display:flex;gap:17px;align-items:center;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.25s}
    .recommend-item:hover{transform:translateX(4px);box-shadow:var(--shadow-sm);border-color:#f4c0b5}
    .recommend-icon{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;background:#fff2ed;color:var(--brand);font-size:20px;flex:0 0 auto}
    .recommend-item h3{font-size:16px;margin:0 0 3px}
    .recommend-item p{font-size:13px;color:var(--muted);margin:0;line-height:1.55}
    .icon-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .icon-card{padding:27px 23px;background:#fff;border:1px solid var(--line);border-radius:15px;transition:.25s}
    .icon-card:hover{border-color:#f0a99a;box-shadow:var(--shadow-sm);transform:translateY(-4px)}
    .icon-card i{font-size:22px;color:var(--brand);margin-bottom:18px}
    .icon-card h3{font-size:17px;margin:0 0 8px}
    .icon-card p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}
    .split-showcase{display:grid;grid-template-columns:.85fr 1.15fr;gap:62px;align-items:center}
    .showcase-copy h2{max-width:470px}
    .showcase-copy p{color:var(--muted);margin:18px 0 25px;max-width:480px}
    .check-list{padding:0;margin:0;list-style:none;display:grid;gap:12px}
    .check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14px}
    .check-list i{color:#39a878;margin-top:5px}
    .device-stage{background:#dfe5ee;border-radius:22px;padding:26px;position:relative;min-height:360px;display:flex;align-items:center;justify-content:center}
    .screen{background:#111c2c;border:7px solid #27364a;border-radius:17px;width:74%;min-height:250px;padding:21px;color:#fff;box-shadow:0 22px 32px rgba(20,31,49,.25);position:relative}
    .screen-top{display:flex;justify-content:space-between;color:#9ba8ba;font-size:11px;border-bottom:1px solid #344256;padding-bottom:13px}
    .screen h3{font-size:23px;margin:23px 0 8px}.screen p{font-size:12px;color:#aeb8c7;margin:0 0 20px}
    .screen-bars{display:flex;gap:8px}.screen-bars span{height:7px;border-radius:5px;background:#e74729;width:31%}.screen-bars span:nth-child(2){background:#f4b740;width:21%}.screen-bars span:nth-child(3){background:#6d89a8;width:43%}
    .floating-label{position:absolute;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:11px;padding:10px 13px;font-size:12px;font-weight:700;color:var(--ink)}
    .label-one{top:50px;left:27px}.label-two{right:23px;bottom:52px}
    .rank-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .rank-panel{border:1px solid rgba(255,255,255,.13);border-radius:15px;background:rgba(255,255,255,.06);padding:20px}
    .rank-row{display:grid;grid-template-columns:40px 1fr 80px;align-items:center;gap:12px;padding:15px 4px;border-bottom:1px solid rgba(255,255,255,.1)}
    .rank-row:last-child{border:0}.rank-num{font-size:18px;font-weight:800;color:#f4b740}.rank-name{font-weight:700;font-size:14px}.rank-meta{font-size:12px;color:rgba(255,255,255,.55)}.rank-score{text-align:right;color:#f4b740;font-weight:700;font-size:13px}
    .metric-box{display:flex;flex-direction:column;justify-content:center;padding:28px}.metric-box strong{font-size:48px;line-height:1;color:#fff}.metric-box span{color:rgba(255,255,255,.58);font-size:14px;margin-top:10px}
    .news-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
    .news-card{border-top:3px solid var(--brand);padding:23px 22px;background:#fff;border-radius:0 0 14px 14px;box-shadow:var(--shadow-sm)}
    .news-date{font-size:12px;color:var(--brand);font-weight:700}.news-card h3{font-size:18px;line-height:1.45;margin:11px 0 9px}.news-card p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}
    .proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .proof-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:15px}
    .proof-card p{font-size:15px;line-height:1.85;margin:0 0 18px}.proof-card strong{font-size:14px}.proof-card small{display:block;color:var(--muted);font-size:12px}
    .partner-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}.partner{padding:12px 17px;border:1px solid var(--line);border-radius:9px;color:#667084;font-weight:700;background:#fff;font-size:14px}
    .trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:15px;overflow:hidden}
    .trust-item{background:#fff;padding:24px 20px;display:flex;gap:13px;align-items:flex-start}.trust-item i{color:var(--brand);font-size:19px;margin-top:5px}.trust-item h3{font-size:15px;margin:0 0 4px}.trust-item p{font-size:12px;color:var(--muted);margin:0;line-height:1.55}
    .cta-section{padding:80px 0;background:#fff4ef}.cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-box h2{max-width:650px}.cta-box p{color:var(--muted);margin:12px 0 0;max-width:650px}
    footer{background:#101827;color:#fff;padding:58px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:40px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.12)}.footer-brand{max-width:310px}.footer-brand p{color:rgba(255,255,255,.55);font-size:13px;line-height:1.8;margin-top:17px}.footer-links{display:flex;gap:80px}.footer-col h3{font-size:13px;margin:0 0 13px;color:#fff}.footer-col a{display:block;font-size:13px;color:rgba(255,255,255,.52);margin:7px 0}.footer-col a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;color:rgba(255,255,255,.42);font-size:12px;padding-top:20px}
    :focus-visible{outline:3px solid rgba(231,71,41,.38);outline-offset:3px}
    @media(max-width:1024px){.main-nav{margin-left:0}.command-search{width:165px}.icon-grid{grid-template-columns:repeat(2,1fr)}.hero{min-height:570px}.split-showcase{gap:35px}}
    @media(max-width:768px){.site-header,.nav-wrap{height:68px}.nav-wrap{gap:15px}.main-nav,.nav-tools{display:none}.menu-toggle{display:block;margin-left:auto}.hero-inner{padding:74px 24px 45px}.hero-copy{font-size:16px}.hero-stats{gap:22px;margin-top:37px}.section{padding:65px 0}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:15px}.feature-grid,.split-showcase,.rank-grid{grid-template-columns:1fr}.feature-main{min-height:330px}.device-stage{min-height:330px}.news-grid,.proof-grid{grid-template-columns:1fr}.trust-row{grid-template-columns:repeat(2,1fr)}.cta-box{display:block}.cta-box .button-main{margin-top:24px}.footer-top{display:block}.footer-links{gap:45px;margin-top:35px}}
    @media(max-width:520px){.container{padding:0 18px}.brand{font-size:18px}.brand-mark{width:30px;height:30px}.hero{min-height:650px}.hero h1{font-size:42px}.hero-stats{flex-wrap:wrap}.hero-stat{min-width:100px}.series-bar a{padding:11px 15px}.icon-grid{grid-template-columns:1fr}.screen{width:88%}.floating-label{font-size:11px;padding:8px}.label-one{left:10px}.label-two{right:10px}.trust-row{grid-template-columns:1fr}.footer-links{gap:24px;flex-wrap:wrap}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}

/* roulang page: category1 */
:root{
      --ink:#101827;
      --muted:#697386;
      --soft:#f5f7fb;
      --line:#e5e9f1;
      --brand:#e74729;
      --brand-dark:#b92e1a;
      --gold:#f4b740;
      --navy:#172236;
      --white:#fff;
      --radius:18px;
      --shadow:0 18px 48px rgba(23,34,54,.10);
      --shadow-sm:0 8px 24px rgba(23,34,54,.07);
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    h1,h2,h3,h4,p{overflow-wrap:anywhere}
    .container{max-width:1180px;padding:0 24px}

    .site-header{height:78px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(16px)}
    .nav-wrap{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:inline-flex;align-items:center;gap:11px;font-size:21px;font-weight:800;letter-spacing:0;color:var(--ink);white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:900;font-size:15px;box-shadow:0 5px 12px rgba(231,71,41,.28)}
    .main-nav{display:flex;align-items:center;gap:7px;margin-left:16px}
    .main-nav a{font-size:14px;color:var(--muted);padding:8px 14px;border-radius:9px}
    .main-nav a:hover,.main-nav a.active{color:var(--brand);background:#fff1ed}
    .nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
    .command-search{display:flex;align-items:center;width:205px;height:39px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;padding:0 12px;color:#9aa3b2}
    .command-search i{font-size:13px;margin-right:8px}
    .command-search input{border:0;outline:0;background:transparent;width:100%;font-size:13px;color:var(--ink)}
    .command-search input::placeholder{color:#a5adba}
    .nav-button,.button-main{border:0;background:var(--brand);color:#fff;font-weight:700;border-radius:10px;padding:10px 17px;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 8px 18px rgba(231,71,41,.18)}
    .nav-button:hover,.button-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:transparent;color:var(--ink);font-size:22px}

    .page-hero{padding:82px 0 76px;background:#f8fafc;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;right:-100px;top:-140px;width:420px;height:420px;border:70px solid rgba(231,71,41,.07);border-radius:50%}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:1.4px;margin-bottom:15px}
    .hero-kicker span{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 5px rgba(244,183,64,.16)}
    .page-hero h1{font-size:clamp(36px,5vw,62px);line-height:1.16;letter-spacing:0;margin:0 0 20px;max-width:760px}
    .page-hero p{max-width:690px;color:var(--muted);font-size:18px;line-height:1.9;margin:0 0 28px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px}
    .tag{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px}
    .tag i{color:var(--brand)}

    .section{padding:86px 0}
    .section-soft{background:var(--soft)}
    .section-dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:36px}
    .section-kicker{color:var(--brand);font-size:12px;font-weight:800;letter-spacing:1.7px;text-transform:uppercase;margin-bottom:8px}
    .section-dark .section-kicker{color:var(--gold)}
    .section-head h2{font-size:clamp(27px,3vw,38px);line-height:1.3;margin:0}
    .section-intro{max-width:590px;color:var(--muted);margin:13px 0 0;line-height:1.85}
    .section-dark .section-intro{color:rgba(255,255,255,.68)}

    .extension-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
    .extension-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
    .extension-panel h3{font-size:24px;margin:0 0 10px}
    .extension-panel p{color:var(--muted);margin:0 0 24px}
    .extension-list{display:grid;gap:12px;padding:0;margin:0;list-style:none}
    .extension-list li{display:flex;align-items:flex-start;gap:13px;padding:14px 0;border-bottom:1px solid var(--line)}
    .extension-list li:last-child{border-bottom:0}
    .extension-list i{width:27px;height:27px;border-radius:8px;background:#fff1ed;color:var(--brand);display:grid;place-items:center;font-size:13px;margin-top:2px}
    .extension-list strong{display:block;font-size:15px;margin-bottom:2px}
    .extension-list span{display:block;color:var(--muted);font-size:13px;line-height:1.65}
    .visual-board{min-height:360px;border-radius:var(--radius);padding:30px;background:#1d2a40 url("https://images.unsplash.com/photo-1550745165-9bc0b252726f?auto=format&fit=crop&w=1200&q=85") center/cover;position:relative;overflow:hidden;color:#fff}
    .visual-board:before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(23,34,54,.96),rgba(23,34,54,.56))}
    .visual-board > *{position:relative;z-index:1}
    .board-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:70px;color:rgba(255,255,255,.7);font-size:13px}
    .status-dot{display:inline-flex;align-items:center;gap:7px}
    .status-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:#42c68b}
    .visual-board h3{font-size:30px;line-height:1.3;margin:0 0 12px}
    .visual-board p{color:rgba(255,255,255,.7);max-width:350px;font-size:14px}
    .board-footer{display:flex;gap:12px;margin-top:28px}
    .board-stat{padding:12px 15px;border:1px solid rgba(255,255,255,.16);border-radius:11px;background:rgba(255,255,255,.08)}
    .board-stat strong{display:block;font-size:20px}
    .board-stat span{font-size:11px;color:rgba(255,255,255,.58)}

    .category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .category-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:25px;transition:.25s}
    .category-card:hover{transform:translateY(-5px);border-color:#f0a99a;box-shadow:var(--shadow-sm)}
    .category-card .card-icon{width:43px;height:43px;border-radius:12px;background:#fff1ed;color:var(--brand);display:grid;place-items:center;font-size:18px;margin-bottom:20px}
    .category-card h3{font-size:18px;margin:0 0 8px}
    .category-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 18px}
    .card-link{font-size:13px;font-weight:800;color:var(--brand)}
    .card-link:hover{color:var(--brand-dark)}

    .compare-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:26px;align-items:start}
    .compare-intro{padding-top:8px}
    .compare-intro h2{font-size:34px;line-height:1.35;margin:0 0 15px}
    .compare-intro p{color:var(--muted);margin:0}
    .compare-list{display:grid;gap:10px}
    .compare-row{display:grid;grid-template-columns:46px 1fr 105px;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:13px;padding:17px 19px}
    .compare-row .num{font-weight:900;color:var(--brand);font-size:18px}
    .compare-row strong{font-size:15px}
    .compare-row span{font-size:12px;color:var(--muted);display:block}
    .compare-row b{font-size:13px;text-align:right;color:#2c9b70}

    .scene-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .scene-item{min-height:180px;border-radius:15px;padding:22px;display:flex;flex-direction:column;justify-content:flex-end;position:relative;overflow:hidden;background-size:cover;background-position:center;color:#fff}
    .scene-item:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(12,20,34,.85),rgba(12,20,34,.05))}
    .scene-item > *{position:relative;z-index:1}
    .scene-item h3{font-size:17px;margin:0 0 3px}
    .scene-item p{font-size:12px;color:rgba(255,255,255,.72);margin:0}
    .scene-one{background-image:url("https://images.unsplash.com/photo-1511512578047-dfb367046420?auto=format&fit=crop&w=700&q=85")}
    .scene-two{background-image:url("https://images.unsplash.com/photo-1593305841991-05c297ba4575?auto=format&fit=crop&w=700&q=85")}
    .scene-three{background-image:url("https://images.unsplash.com/photo-1600080972464-8e5f35f63d08?auto=format&fit=crop&w=700&q=85")}
    .scene-four{background-image:url("https://images.unsplash.com/photo-1542751371-adc38448a05e?auto=format&fit=crop&w=700&q=85")}

    .updates-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
    .update-list{display:grid;gap:12px}
    .update-item{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:13px}
    .update-item:hover{border-color:#f0a99a;box-shadow:var(--shadow-sm)}
    .update-item h3{font-size:16px;margin:0 0 4px}
    .update-item p{font-size:13px;color:var(--muted);margin:0}
    .update-date{white-space:nowrap;color:var(--brand);font-size:12px;font-weight:800}
    .notice-panel{padding:28px;border-radius:var(--radius);background:#fff7e8;border:1px solid #f6dfac}
    .notice-panel i{color:#d99716;font-size:24px;margin-bottom:20px}
    .notice-panel h3{font-size:21px;margin:0 0 10px}
    .notice-panel p{font-size:14px;color:#77633b;margin:0;line-height:1.8}

    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:13px;padding:20px 22px}
    .faq-item h3{font-size:16px;margin:0 0 8px}
    .faq-item p{font-size:13px;color:var(--muted);line-height:1.8;margin:0}

    .closing{padding:76px 0;background:#fff1ed}
    .closing-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .closing h2{font-size:32px;line-height:1.35;margin:0 0 9px}
    .closing p{color:var(--muted);margin:0}
    .button-outline{display:inline-flex;align-items:center;gap:8px;border:1px solid #f0a99a;border-radius:10px;color:var(--brand);padding:11px 18px;font-weight:800;background:#fff}
    .button-outline:hover{background:var(--brand);border-color:var(--brand);color:#fff}

    footer{background:var(--navy);color:#fff;padding:62px 0 24px}
    .footer-top{display:flex;justify-content:space-between;gap:50px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.12)}
    .footer-brand{max-width:350px}
    .footer-brand .brand{color:#fff}
    .footer-brand p{color:rgba(255,255,255,.6);font-size:14px;margin:19px 0 0;line-height:1.8}
    .footer-links{display:flex;gap:85px}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{font-size:14px;margin:0 0 8px;color:#fff}
    .footer-col a{font-size:13px;color:rgba(255,255,255,.6)}
    .footer-col a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;color:rgba(255,255,255,.42);font-size:12px;padding-top:22px}

    :focus-visible{outline:3px solid rgba(231,71,41,.35);outline-offset:3px}

    @media(max-width:1024px){
      .command-search{width:160px}
      .extension-layout,.compare-wrap,.updates-layout{grid-template-columns:1fr}
      .category-grid{grid-template-columns:repeat(2,1fr)}
      .scene-strip{grid-template-columns:repeat(2,1fr)}
    }

    @media(max-width:768px){
      .site-header,.nav-wrap{height:70px}
      .nav-wrap{gap:14px}
      .main-nav{display:none;position:absolute;left:16px;right:16px;top:70px;margin:0;padding:10px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow)}
      .main-nav.open{display:flex;flex-direction:column;align-items:stretch}
      .main-nav a{display:block}
      .nav-tools{margin-left:auto}
      .command-search{display:none}
      .nav-button{padding:9px 12px;font-size:13px}
      .menu-toggle{display:block}
      .page-hero{padding:64px 0 58px}
      .section{padding:66px 0}
      .section-head{display:block;margin-bottom:27px}
      .section-head .text-link{display:inline-block;margin-top:14px}
      .footer-top,.closing-inner{display:block}
      .footer-links{margin-top:33px;gap:45px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:5px}
    }

    @media(max-width:520px){
      .container{padding:0 18px}
      .brand{font-size:18px}
      .brand-mark{width:31px;height:31px}
      .nav-button{font-size:12px}
      .page-hero h1{font-size:35px}
      .page-hero p{font-size:16px}
      .extension-panel,.visual-board{padding:23px}
      .visual-board{min-height:330px}
      .visual-board h3{font-size:25px}
      .category-grid,.faq-grid,.scene-strip{grid-template-columns:1fr}
      .compare-row{grid-template-columns:35px 1fr;gap:10px}
      .compare-row b{grid-column:2;text-align:left}
      .update-item{display:block}
      .update-date{display:block;margin-top:9px}
      .closing h2{font-size:27px}
      .closing .button-main{margin-top:23px}
      .footer-links{gap:28px}
    }

/* 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}