/* roulang page: index */
:root{
      --bg:#06101f;
      --bg-deep:#030a15;
      --panel:rgba(12,29,54,.78);
      --panel-strong:rgba(15,37,68,.94);
      --panel-soft:rgba(19,48,83,.55);
      --line:rgba(143,194,255,.18);
      --line-bright:rgba(89,183,255,.55);
      --blue:#38adff;
      --blue-bright:#76d4ff;
      --cyan:#57e2df;
      --violet:#a78bfa;
      --rose:#ef8bac;
      --text:#eff8ff;
      --muted:#a5b8cb;
      --dim:#6f849d;
      --success:#70e1ad;
      --warning:#ffd47a;
      --danger:#e9899a;
      --radius:18px;
      --radius-sm:12px;
      --shadow:0 22px 52px rgba(0,0,0,.3), 0 0 28px rgba(35,139,255,.09);
      --shadow-hover:0 26px 64px rgba(0,0,0,.42), 0 0 34px rgba(54,173,255,.2);
      --max:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;background:var(--bg-deep)}
    body{
      margin:0;
      min-width:320px;
      color:var(--text);
      background:
        radial-gradient(circle at 87% 8%,rgba(43,114,212,.16),transparent 25rem),
        radial-gradient(circle at 12% 42%,rgba(76,56,170,.11),transparent 27rem),
        linear-gradient(180deg,#071426 0%,#06101f 46%,#030a15 100%);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.7;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.32;
      background-image:linear-gradient(rgba(104,178,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(104,178,255,.05) 1px,transparent 1px);
      background-size:54px 54px;
      mask-image:linear-gradient(to bottom,black,transparent 70%);
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease}
    img{display:block;max-width:100%}
    button,input,select{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
      outline:3px solid rgba(93,207,255,.7);
      outline-offset:3px;
    }
    .site-shell{position:relative}
    .container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
    .section{padding:88px 0;position:relative}
    .section-head{max-width:730px;margin-bottom:34px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      margin:0 0 13px;color:var(--blue-bright);font-size:13px;font-weight:700;letter-spacing:.08em;
    }
    .eyebrow:before{content:"";width:24px;height:1px;background:var(--blue)}
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{color:var(--text);font-weight:750;line-height:1.22;letter-spacing:-.035em}
    h1{font-size:clamp(36px,5vw,62px);margin-bottom:20px}
    h2{font-size:clamp(27px,3.3vw,42px);margin-bottom:15px}
    h3{font-size:20px;margin-bottom:8px}
    p{color:var(--muted)}
    .section-head p{max-width:680px;margin-bottom:0}
    .glass{
      background:linear-gradient(135deg,rgba(20,48,83,.8),rgba(8,22,42,.69));
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      backdrop-filter:blur(14px);
      -webkit-backdrop-filter:blur(14px);
    }
    .skip-link{position:absolute;left:-999px;top:8px;z-index:1000;background:var(--blue);color:#03101d;padding:9px 14px;border-radius:8px;font-weight:700}
    .skip-link:focus{left:12px}
    .top-status{border-bottom:1px solid rgba(130,189,255,.12);background:rgba(3,11,24,.7)}
    .status-inner{min-height:35px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:12px;color:var(--dim)}
    .status-inner strong{font-weight:650;color:#badcff}
    .status-dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 12px var(--success);display:inline-block;margin-right:7px}
    .site-header{
      position:sticky;top:0;z-index:100;background:rgba(5,15,29,.84);
      backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(140,195,255,.14);
    }
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:0;font-size:18px;font-weight:800;letter-spacing:-.04em;color:var(--text)}
    .brand-mark{width:31px;height:31px;flex:none;border-radius:10px;position:relative;border:1px solid rgba(137,218,255,.65);background:linear-gradient(135deg,rgba(73,203,255,.28),rgba(124,91,244,.27));box-shadow:inset 0 0 14px rgba(112,210,255,.2),0 0 18px rgba(54,169,255,.12)}
    .brand-mark:after,.brand-mark:before{content:"";position:absolute;border-radius:50%;background:#a9e7ff}
    .brand-mark:before{width:7px;height:7px;left:7px;top:7px}
    .brand-mark:after{width:5px;height:5px;right:6px;bottom:7px;box-shadow:-7px -4px 0 -1px rgba(144,113,255,.95)}
    .desktop-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
    .desktop-nav a{padding:10px 13px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:650}
    .desktop-nav a:hover{color:var(--text);background:rgba(66,153,238,.1)}
    .desktop-nav a.active{color:var(--blue-bright);background:rgba(47,158,255,.1);box-shadow:inset 0 -2px 0 var(--blue)}
    .location-entry{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:rgba(27,64,105,.27);font-size:13px;font-weight:700;color:#c9e9ff;white-space:nowrap}
    .pin{width:9px;height:9px;border:2px solid var(--cyan);border-radius:50% 50% 50% 0;transform:rotate(-45deg);position:relative}
    .pin:after{content:"";position:absolute;width:3px;height:3px;border-radius:50%;background:var(--cyan);top:1px;left:1px}
    .menu-button{display:none;border:1px solid var(--line);border-radius:10px;background:rgba(28,62,101,.45);color:var(--text);padding:9px 11px}
    .hero{padding:54px 0 68px;position:relative}
    .hero-board{
      position:relative;overflow:hidden;min-height:550px;padding:clamp(30px,5vw,68px);
      border:1px solid rgba(134,205,255,.25);border-radius:26px;background:
      linear-gradient(110deg,rgba(9,24,46,.96) 0%,rgba(14,37,70,.89) 57%,rgba(13,28,57,.72) 100%);
      box-shadow:0 30px 80px rgba(0,0,0,.32),inset 0 1px 0 rgba(204,239,255,.12);
    }
    .hero-board:before{content:"";position:absolute;width:430px;height:430px;right:-120px;top:-120px;border:1px solid rgba(108,205,255,.2);border-radius:50%;box-shadow:0 0 0 42px rgba(78,151,255,.04),0 0 0 92px rgba(78,151,255,.03)}
    .hero-board:after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.42;background:linear-gradient(90deg,transparent 49.8%,rgba(150,215,255,.12) 50%,transparent 50.2%),linear-gradient(transparent 49.8%,rgba(150,215,255,.08) 50%,transparent 50.2%);background-size:110px 110px}
    .hero-grid{position:relative;z-index:2;min-height:410px;display:grid;grid-template-columns:minmax(0,1.07fr) minmax(335px,.93fr);gap:42px;align-items:center}
    .offer-chip{display:inline-flex;align-items:center;gap:9px;padding:8px 12px;margin-bottom:17px;border:1px solid rgba(255,206,124,.48);border-radius:999px;background:rgba(138,92,27,.18);color:#ffe0a0;font-size:13px;font-weight:750}
    .offer-chip b{color:#fff2ce}
    .hero-copy{max-width:650px}
    .hero-copy p{font-size:17px;max-width:610px;margin-bottom:27px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:27px}
    .button{
      display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 17px;border-radius:10px;border:1px solid transparent;font-weight:750;font-size:14px;letter-spacing:.01em;
    }
    .button.primary{color:#031220;background:var(--blue);box-shadow:0 8px 24px rgba(50,171,255,.28)}
    .button.primary:hover{background:#7bd5ff;box-shadow:0 11px 31px rgba(62,183,255,.43);transform:translateY(-2px)}
    .button.secondary{color:#d8f0ff;border-color:rgba(111,202,255,.5);background:rgba(26,67,111,.24)}
    .button.secondary:hover{background:rgba(56,150,232,.22);border-color:var(--blue-bright);transform:translateY(-2px)}
    .button:active{transform:translateY(1px)}
    .hero-points{display:flex;flex-wrap:wrap;gap:17px;color:var(--muted);font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-points i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
    .burst{
      position:absolute;z-index:5;top:26px;right:30px;width:92px;height:92px;display:flex;align-items:center;justify-content:center;text-align:center;
      font-size:12px;line-height:1.25;font-weight:800;color:#061426;background:#8cddff;clip-path:polygon(50% 0%,59% 15%,75% 7%,79% 24%,96% 25%,86% 41%,100% 52%,84% 60%,92% 76%,74% 77%,69% 95%,55% 84%,43% 100%,35% 82%,18% 89%,19% 71%,0% 65%,14% 51%,2% 37%,20% 31%,18% 13%,37% 18%)
    }
    .signal-stack{position:relative;min-height:360px}
    .signal-card{position:absolute;border-radius:18px;border:1px solid var(--line);background:linear-gradient(145deg,rgba(22,55,93,.9),rgba(9,25,47,.93));box-shadow:var(--shadow);overflow:hidden}
    .signal-main{width:89%;right:0;top:13px;padding:18px}
    .visual{height:177px;border-radius:12px;position:relative;overflow:hidden;background:linear-gradient(135deg,#172d58,#273a83 46%,#6a3b83 100%)}
    .visual:before{content:"";position:absolute;width:150px;height:150px;border-radius:50%;top:-35px;left:22%;background:rgba(112,220,255,.3);filter:blur(3px)}
    .visual:after{content:"";position:absolute;left:14%;right:14%;bottom:17px;height:57px;border:1px solid rgba(215,242,255,.43);border-radius:50% 50% 8px 8px;background:linear-gradient(90deg,rgba(61,194,255,.26),rgba(169,112,255,.31));box-shadow:0 -15px 35px rgba(89,205,255,.16)}
    .visual-label{position:absolute;top:13px;left:13px;z-index:2;padding:5px 8px;border-radius:7px;background:rgba(3,13,28,.58);border:1px solid rgba(193,229,255,.3);font-size:11px;color:#d7efff}
    .play-symbol{position:absolute;z-index:2;left:50%;top:50%;width:50px;height:50px;transform:translate(-50%,-50%);border-radius:50%;border:1px solid rgba(220,245,255,.65);background:rgba(16,65,110,.54);display:grid;place-items:center;box-shadow:0 0 24px rgba(83,197,255,.35)}
    .play-symbol:after{content:"";margin-left:4px;border-left:13px solid #d7f5ff;border-top:8px solid transparent;border-bottom:8px solid transparent}
    .signal-meta{padding:16px 2px 2px}
    .signal-meta h3{font-size:18px;margin:0 0 5px}
    .signal-meta p{font-size:13px;margin:0}
    .mini-card{left:0;bottom:1px;width:59%;padding:15px;z-index:2}
    .mini-card .badge{margin-bottom:10px}
    .mini-card strong{display:block;font-size:15px;color:#e8f6ff;margin-bottom:8px}
    .progress{height:6px;margin:0;background:rgba(131,186,235,.17);border-radius:99px;overflow:hidden}
    .progress .progress-meter{height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));border-radius:inherit;box-shadow:0 0 10px var(--blue)}
    .coord-card{right:5px;bottom:12px;width:34%;padding:14px;z-index:3}
    .coord-card small{display:block;color:var(--dim);font-size:11px;margin-bottom:5px}
    .coord-card b{color:#dff3ff;font-size:16px}
    .badge{display:inline-flex;align-items:center;gap:5px;padding:4px 8px;border-radius:7px;border:1px solid rgba(110,196,255,.3);background:rgba(35,122,185,.14);color:#aee4ff;font-size:11px;font-weight:700;line-height:1.35}
    .badge.violet{color:#ded3ff;border-color:rgba(174,139,255,.35);background:rgba(130,82,201,.15)}
    .badge.rose{color:#ffcfdb;border-color:rgba(240,139,173,.35);background:rgba(213,83,125,.13)}
    .badge.good{color:#bbf5d8;border-color:rgba(104,223,168,.35);background:rgba(59,163,112,.14)}
    .directory{padding-top:72px}
    .problem-grid{display:grid;grid-template-columns:1.12fr .88fr .88fr;gap:16px}
    .problem-card{min-height:194px;padding:22px;border-radius:var(--radius);position:relative;overflow:hidden}
    .problem-card:first-child{grid-row:span 2;min-height:404px;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(160deg,rgba(22,61,102,.9),rgba(11,27,51,.9))}
    .problem-card:after{content:"";position:absolute;right:-26px;top:-26px;width:110px;height:110px;border:1px solid rgba(113,205,255,.18);border-radius:50%}
    .problem-index{position:absolute;right:18px;top:14px;color:rgba(160,216,255,.32);font-size:34px;font-weight:800;line-height:1}
    .problem-card h3,.problem-card p,.problem-card .badge{position:relative;z-index:2}
    .problem-card p{font-size:14px;margin:0 0 14px}
    .problem-card:first-child p{font-size:15px;max-width:330px}
    .feature-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
    .feature-main{padding:29px;min-height:390px;border-radius:var(--radius);display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
    .feature-main:before{content:"";position:absolute;right:-65px;bottom:-110px;width:310px;height:310px;border-radius:50%;background:radial-gradient(circle,rgba(60,184,255,.23),transparent 66%)}
    .feature-main > *{position:relative;z-index:1}
    .feature-main p{max-width:580px}
    .feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:27px}
    .feature-item{padding:13px 14px;border:1px solid rgba(143,200,255,.17);border-radius:11px;background:rgba(5,20,39,.34);font-size:13px;color:#bed4e7}
    .feature-item b{display:block;color:#e6f6ff;font-size:14px;margin-bottom:3px}
    .feature-side{display:grid;gap:20px}
    .feature-small{padding:22px;border-radius:var(--radius);min-height:185px;position:relative}
    .feature-small p{font-size:14px;margin-bottom:16px}
    .feature-small .button{padding:8px 12px;min-height:39px;font-size:13px}
    .icon-slab{width:40px;height:40px;margin-bottom:17px;display:grid;place-items:center;border-radius:11px;border:1px solid rgba(105,202,255,.35);background:rgba(50,137,206,.18);color:var(--blue-bright);font-size:19px}
    .result-strip{margin-top:20px;padding:18px 20px;border-radius:15px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .result-stat{padding:5px 10px;border-left:1px solid var(--line)}
    .result-stat:first-child{border-left:0}
    .result-stat b{display:block;font-size:22px;color:#dff5ff;letter-spacing:-.04em}
    .result-stat span{font-size:12px;color:var(--dim)}
    .scene-panel{padding:28px;border-radius:22px;overflow:hidden}
    .scene-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:38px;align-items:center}
    .scene-copy p{font-size:15px}
    .steps{margin:22px 0 0;padding:0;list-style:none;counter-reset:step}
    .steps li{position:relative;padding:0 0 18px 48px;counter-increment:step;color:var(--muted);font-size:14px}
    .steps li:before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:0;width:31px;height:31px;border-radius:9px;display:grid;place-items:center;background:rgba(39,139,214,.18);border:1px solid rgba(91,191,255,.35);color:#bfeaff;font-size:11px;font-weight:800}
    .steps li:not(:last-child):after{content:"";position:absolute;left:15px;top:34px;height:calc(100% - 20px);border-left:1px dashed rgba(121,196,255,.35)}
    .steps b{display:block;color:#e4f4ff;font-size:15px;margin-bottom:2px}
    .filter-demo{padding:21px;border-radius:16px;background:rgba(4,16,34,.5);border:1px solid rgba(131,202,255,.2)}
    .filter-demo .demo-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;font-size:13px}
    .filter-demo .demo-top strong{color:#e9f7ff}
    .search-demo{height:44px;padding:0 13px;display:flex;align-items:center;gap:8px;border:1px solid rgba(109,195,255,.36);border-radius:10px;background:rgba(14,44,75,.63);color:#7d9bb8;font-size:13px;margin-bottom:12px}
    .filter-row{display:flex;flex-wrap:wrap;gap:8px}
    .filter-row span{padding:5px 9px;border-radius:7px;border:1px solid var(--line);font-size:11px;color:#a9c2d8}
    .filter-row span.on{color:#d9f5ff;background:rgba(42,158,235,.22);border-color:rgba(95,205,255,.5)}
    .info-section{padding-bottom:55px}
    .info-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:20px}
    .news-board,.recommend-board{padding:25px;border-radius:var(--radius)}
    .news-board h2,.recommend-board h2{font-size:26px}
    .news-list{list-style:none;margin:19px 0 0;padding:0}
    .news-list li{border-top:1px solid rgba(132,193,246,.14)}
    .news-list a{display:grid;grid-template-columns:100px 1fr auto;align-items:center;gap:14px;padding:15px 0}
    .news-list a:hover .news-title{color:var(--blue-bright)}
    .news-list time{font-size:12px;color:var(--dim)}
    .news-type{font-size:11px;color:#bceaff}
    .news-title{font-size:15px;font-weight:700;color:#dceeff;transition:color .2s}
    .arrow{color:var(--blue);font-size:20px}
    .recommend-card{padding:17px;border:1px solid var(--line);border-radius:13px;background:rgba(5,19,37,.35);margin-top:15px}
    .recommend-card h3{font-size:17px;margin-bottom:5px}
    .recommend-card p{font-size:13px;margin-bottom:12px}
    .recommend-card a{font-size:13px;font-weight:700;color:var(--blue-bright)}
    .testimonials{padding-top:55px}
    .quote-track{display:grid;grid-template-columns:.8fr 1.2fr .8fr;gap:15px;align-items:center}
    .quote-card{padding:20px;border-radius:var(--radius);opacity:.73}
    .quote-card.featured{padding:29px;opacity:1;border-color:rgba(101,200,255,.43);background:linear-gradient(135deg,rgba(24,62,104,.88),rgba(13,29,56,.9))}
    .quote-mark{color:var(--blue);font-size:38px;line-height:.8;font-family:Georgia,serif}
    .quote-card p{font-size:14px;margin:9px 0 18px}
    .quote-card.featured p{font-size:17px;color:#d4e7f7}
    .quote-person{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--dim)}
    .avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#59bcf4,#7858ae);border:1px solid rgba(213,242,255,.48)}
    .download-section{padding:68px 0}
    .download-panel{position:relative;overflow:hidden;padding:clamp(28px,5vw,52px);border-radius:24px;border:1px solid rgba(113,203,255,.34);background:linear-gradient(115deg,rgba(18,57,95,.93),rgba(25,34,74,.89));box-shadow:var(--shadow)}
    .download-panel:after{content:"";position:absolute;width:400px;height:400px;right:-135px;top:-190px;border-radius:50%;background:radial-gradient(circle,rgba(111,216,255,.32),transparent 65%)}
    .download-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr .83fr;gap:34px;align-items:center}
    .download-content h2{max-width:630px}
    .download-content p{max-width:650px;margin-bottom:0}
    .email-form{padding:16px;border-radius:14px;background:rgba(2,14,31,.46);border:1px solid rgba(176,224,255,.18)}
    .email-form label{display:block;margin-bottom:7px;color:#cae6f8;font-size:13px;font-weight:700}
    .form-row{display:flex;gap:9px}
    .email-form input{min-width:0;flex:1;height:46px;padding:0 12px;border:1px solid rgba(125,203,255,.33);border-radius:9px;background:rgba(8,29,55,.82);color:var(--text)}
    .email-form input::placeholder{color:#7592ae}
    .email-form input:focus{border-color:var(--blue);background:rgba(10,40,71,.95);box-shadow:0 0 0 3px rgba(50,171,255,.16);outline:0}
    .form-note{margin:10px 0 0;font-size:11px;color:#a6bacb}
    .faq-section{padding-top:50px}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:45px;align-items:start}
    .faq-copy{position:sticky;top:104px}
    .faq-copy p{font-size:15px}
    .accordion{margin:0;background:transparent}
    .accordion-item{margin-bottom:10px;border:1px solid var(--line);border-radius:12px;background:rgba(11,30,55,.64);overflow:hidden}
    .accordion-title{position:relative;display:block;padding:17px 48px 17px 18px;border:0!important;color:#e4f3ff!important;font-weight:700;font-size:15px;background:transparent}
    .accordion-title:before{right:18px;margin-top:-10px;color:var(--blue-bright);font-size:23px}
    .accordion-title:hover,.accordion-title:focus{background:rgba(43,132,207,.13);color:#fff!important}
    .accordion-content{padding:0 18px 17px;border:0!important;background:transparent;color:var(--muted);font-size:14px}
    .accordion-content p{margin:0;color:var(--muted)}
    .footer{margin-top:58px;border-top:1px solid rgba(130,194,255,.14);background:rgba(2,9,19,.8)}
    .footer-main{padding:45px 0 25px;display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:34px}
    .footer .brand{margin-bottom:13px}
    .footer p{font-size:13px;max-width:430px}
    .footer h3{font-size:14px;color:#d9efff;letter-spacing:0;margin-bottom:13px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:7px 0}
    .footer-links a{font-size:13px;color:var(--muted)}
    .footer-links a:hover{color:var(--blue-bright)}
    .footer-bottom{padding:17px 0;border-top:1px solid rgba(130,194,255,.1);display:flex;justify-content:space-between;gap:18px;font-size:12px;color:var(--dim)}
    .off-canvas{background:#071527;color:var(--text);padding:22px}
    .off-canvas .brand{margin-bottom:27px}
    .mobile-nav{list-style:none;margin:0;padding:0}
    .mobile-nav a{display:block;padding:13px 0;border-bottom:1px solid rgba(144,201,255,.13);font-weight:700;color:#c9ddea}
    .mobile-nav a.active{color:var(--blue-bright)}
    .mobile-note{margin-top:25px;padding:14px;border-radius:12px;border:1px solid var(--line);background:rgba(23,57,91,.3);color:var(--muted);font-size:12px}
    @media(max-width:1024px){
      .desktop-nav{display:none}.menu-button{display:inline-flex}.location-entry{margin-left:auto}
      .hero-grid{grid-template-columns:1fr;gap:23px}.signal-stack{max-width:610px;width:100%;margin-left:auto;min-height:315px}
      .problem-grid{grid-template-columns:1fr 1fr}.problem-card:first-child{grid-column:span 2;grid-row:auto;min-height:250px}
      .result-strip{grid-template-columns:repeat(2,1fr)}
      .quote-track{grid-template-columns:1fr 1fr}.quote-card:first-child{display:none}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--max))}
      .section{padding:60px 0}.hero{padding:32px 0 44px}.hero-board{min-height:auto;padding:30px 23px;border-radius:20px}
      .burst{width:73px;height:73px;top:15px;right:15px;font-size:10px}.hero-copy{padding-top:35px}.hero-copy p{font-size:15px}
      .feature-layout,.scene-grid,.info-layout,.download-content,.faq-layout{grid-template-columns:1fr}
      .feature-main{min-height:auto}.faq-copy{position:static}.faq-layout{gap:22px}.info-section{padding-bottom:35px}
      .footer-main{grid-template-columns:1fr 1fr}.footer-main>div:first-child{grid-column:span 2}
      .quote-track{grid-template-columns:1fr}.quote-card:not(.featured){display:none}
      .section-head{margin-bottom:25px}.status-inner span:last-child{display:none}
    }
    @media(max-width:520px){
      body{font-size:15px}.container{width:calc(100% - 28px)}.nav-wrap{height:66px;gap:10px}.brand{font-size:15px}.brand-mark{width:27px;height:27px}.location-entry{font-size:0;padding:10px}.location-entry .pin{margin:0}.menu-button{padding:8px 10px}
      .hero-board{padding:25px 17px}.hero-actions{display:grid;grid-template-columns:1fr}.button{width:100%}.hero-points{gap:9px 13px}
      .signal-stack{min-height:306px}.signal-main{width:95%;padding:12px}.visual{height:145px}.mini-card{padding:12px;width:65%}.coord-card{width:33%;padding:10px}.coord-card b{font-size:13px}
      .problem-grid{grid-template-columns:1fr}.problem-card:first-child{grid-column:auto;min-height:255px}.problem-card{min-height:175px}
      .feature-list{grid-template-columns:1fr}.result-strip{grid-template-columns:1fr 1fr;padding:12px}.result-stat:nth-child(3){border-left:0}.scene-panel{padding:20px}
      .news-board,.recommend-board{padding:19px}.news-list a{grid-template-columns:1fr auto;gap:6px}.news-list time{grid-column:1;grid-row:2}.news-type{display:none}
      .form-row{flex-direction:column}.email-form .button{width:100%}.footer-main{grid-template-columns:1fr;gap:24px}.footer-main>div:first-child{grid-column:auto}.footer-bottom{flex-direction:column;gap:5px}
      .offer-chip{font-size:11px}.result-stat b{font-size:19px}
    }

/* roulang page: category1 */
:root{
      --bg:#06101f;
      --bg-deep:#030a15;
      --panel:rgba(12,29,54,.78);
      --panel-strong:rgba(15,37,68,.94);
      --panel-soft:rgba(19,48,83,.55);
      --line:rgba(143,194,255,.18);
      --line-bright:rgba(89,183,255,.55);
      --blue:#38adff;
      --blue-bright:#76d4ff;
      --cyan:#57e2df;
      --violet:#a78bfa;
      --rose:#ef8bac;
      --text:#eff8ff;
      --muted:#a5b8cb;
      --dim:#6f849d;
      --success:#70e1ad;
      --warning:#ffd47a;
      --danger:#e9899a;
      --radius:18px;
      --radius-sm:12px;
      --shadow:0 22px 52px rgba(0,0,0,.3),0 0 28px rgba(35,139,255,.09);
      --shadow-hover:0 26px 64px rgba(0,0,0,.42),0 0 34px rgba(54,173,255,.2);
      --max:1240px;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth;background:var(--bg-deep)}
    body{
      margin:0;min-width:320px;color:var(--text);
      background:radial-gradient(circle at 87% 8%,rgba(43,114,212,.16),transparent 25rem),radial-gradient(circle at 12% 42%,rgba(76,56,170,.11),transparent 27rem),linear-gradient(180deg,#071426 0%,#06101f 46%,#030a15 100%);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      font-size:16px;line-height:1.7;overflow-x:hidden;
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.32;
      background-image:linear-gradient(rgba(104,178,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(104,178,255,.05) 1px,transparent 1px);
      background-size:54px 54px;mask-image:linear-gradient(to bottom,black,transparent 70%);
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease}
    img{display:block;max-width:100%}
    button,input,select{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(93,207,255,.7);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
    .section{padding:86px 0;position:relative}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 12px;color:var(--blue-bright);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:24px;height:1px;background:var(--blue)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:-.055em;margin-bottom:18px}
    h2{font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-.04em;margin-bottom:12px}
    h3{font-size:19px;line-height:1.35;margin-bottom:8px}
    p{color:var(--muted)}
    .site-header{
      position:sticky;top:0;z-index:100;background:rgba(5,15,29,.84);
      backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(140,195,255,.14)
    }
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:0;font-size:18px;font-weight:800;letter-spacing:-.04em;color:var(--text)}
    .brand-mark{width:31px;height:31px;flex:none;border-radius:10px;position:relative;border:1px solid rgba(137,218,255,.65);background:linear-gradient(135deg,rgba(73,203,255,.28),rgba(124,91,244,.27));box-shadow:inset 0 0 14px rgba(112,210,255,.2),0 0 18px rgba(54,169,255,.12)}
    .brand-mark:after,.brand-mark:before{content:"";position:absolute;border-radius:50%;background:#a9e7ff}
    .brand-mark:before{width:7px;height:7px;left:7px;top:7px}
    .brand-mark:after{width:5px;height:5px;right:6px;bottom:7px;box-shadow:-7px -4px 0 -1px rgba(144,113,255,.95)}
    .desktop-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
    .desktop-nav a{padding:10px 13px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:650}
    .desktop-nav a:hover{color:var(--text);background:rgba(66,153,238,.1)}
    .desktop-nav a.active{color:var(--blue-bright);background:rgba(47,158,255,.1);box-shadow:inset 0 -2px 0 var(--blue)}
    .location-entry{display:inline-flex;align-items:center;gap:9px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:rgba(18,46,82,.48);color:#c9eaff;font-size:13px;white-space:nowrap}
    .location-entry:hover{border-color:var(--line-bright);background:rgba(31,81,135,.55)}
    .pin{width:10px;height:10px;border:2px solid var(--cyan);border-radius:50%;position:relative;display:inline-block}
    .pin:after{content:"";position:absolute;width:4px;height:4px;border-right:1px solid var(--cyan);border-bottom:1px solid var(--cyan);transform:rotate(45deg);left:1px;top:6px}
    .menu-button{display:none;border:1px solid var(--line);border-radius:10px;background:rgba(28,62,101,.45);color:var(--text);padding:9px 11px}
    .mobile-menu{display:none}
    .category-head{padding:64px 0 42px;border-bottom:1px solid rgba(143,194,255,.12)}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:9px;align-items:center;color:var(--dim);font-size:13px;margin-bottom:22px}
    .breadcrumb a:hover{color:var(--blue-bright)}
    .breadcrumb .current{color:var(--blue-bright)}
    .head-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:48px;align-items:end}
    .category-intro{max-width:750px}
    .category-intro p{font-size:17px;max-width:720px;margin-bottom:0}
    .status-panel,.filter-bar,.side-panel,.content-card,.notice-panel,.faq-item,.cta-panel{
      border:1px solid var(--line);background:linear-gradient(145deg,rgba(16,40,72,.82),rgba(8,24,47,.76));
      box-shadow:var(--shadow);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)
    }
    .status-panel{padding:20px;border-radius:var(--radius);display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .status-item{padding-left:14px;border-left:2px solid var(--blue)}
    .status-item:nth-child(2){border-color:var(--violet)}
    .status-item small{display:block;color:var(--dim);font-size:12px;margin-bottom:3px}
    .status-item strong{font-size:17px;color:var(--text)}
    .filter-section{padding:34px 0 24px}
    .filter-bar{border-radius:var(--radius);padding:20px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr auto;gap:12px;align-items:end}
    .field label{display:block;color:var(--muted);font-size:12px;margin:0 0 6px}
    .field input,.field select{width:100%;height:45px;border:1px solid rgba(143,194,255,.24);border-radius:9px;background:rgba(3,14,29,.72);color:var(--text);padding:0 12px}
    .field input::placeholder{color:#71869d}
    .field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(56,173,255,.13);outline:none}
    .button{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:10px 16px;border-radius:10px;border:1px solid transparent;font-weight:750;font-size:14px;letter-spacing:.01em}
    .button.primary{color:#031220;background:var(--blue);box-shadow:0 8px 24px rgba(50,171,255,.28)}
    .button.primary:hover{background:#7bd5ff;box-shadow:0 11px 31px rgba(62,183,255,.43);transform:translateY(-2px)}
    .button.secondary{color:#d8f0ff;border-color:rgba(111,202,255,.5);background:rgba(26,67,111,.24)}
    .button.secondary:hover{background:rgba(56,150,232,.22);border-color:var(--blue-bright);transform:translateY(-2px)}
    .button.ghost{color:var(--muted);background:transparent;border-color:var(--line)}
    .button.ghost:hover{color:var(--text);border-color:var(--line-bright)}
    .button:active{transform:translateY(1px)}
    .content-layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:26px;align-items:start}
    .result-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:16px}
    .result-head h2{font-size:24px;margin:0}
    .result-count{color:var(--dim);font-size:13px}
    .card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
    .content-card{position:relative;overflow:hidden;border-radius:var(--radius);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
    .content-card:first-child{grid-column:span 2}
    .content-card:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:var(--shadow-hover)}
    .content-card:before{content:"";height:2px;position:absolute;inset:0 0 auto;background:linear-gradient(90deg,var(--blue),transparent);opacity:.8}
    .card-inner{display:grid;grid-template-columns:190px minmax(0,1fr);gap:20px;padding:18px}
    .content-card:not(:first-child) .card-inner{display:block}
    .cover-art{position:relative;min-height:170px;aspect-ratio:16/10;overflow:hidden;border:1px solid rgba(153,215,255,.2);border-radius:12px;background:radial-gradient(circle at 72% 25%,rgba(102,220,255,.7),transparent 18%),linear-gradient(135deg,#182d61 0%,#4f3173 53%,#18233e 100%)}
    .content-card:nth-child(2) .cover-art{background:radial-gradient(circle at 25% 30%,rgba(236,139,174,.7),transparent 17%),linear-gradient(135deg,#25204f,#254c72 55%,#121a37)}
    .content-card:nth-child(3) .cover-art{background:radial-gradient(circle at 70% 70%,rgba(87,226,223,.62),transparent 20%),linear-gradient(135deg,#112e45,#493d79 60%,#16192d)}
    .content-card:nth-child(4) .cover-art{background:radial-gradient(circle at 30% 65%,rgba(255,212,122,.62),transparent 16%),linear-gradient(135deg,#223b64,#5a315d 60%,#171d37)}
    .cover-art:after{content:"";position:absolute;inset:14px;border:1px solid rgba(226,246,255,.28);border-radius:8px;transform:rotate(-4deg)}
    .cover-mark{position:absolute;z-index:1;left:16px;bottom:14px;color:#eaf8ff;font-size:12px;letter-spacing:.16em}
    .card-body{padding:2px 0}
    .tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:11px}
    .tag{display:inline-flex;align-items:center;padding:3px 8px;border:1px solid rgba(111,202,255,.32);border-radius:999px;color:var(--blue-bright);background:rgba(47,158,255,.1);font-size:11px;line-height:1.4}
    .tag.rose{color:#ffb6ce;border-color:rgba(239,139,172,.4);background:rgba(239,139,172,.09)}
    .tag.green{color:#9bf0c6;border-color:rgba(112,225,173,.35);background:rgba(112,225,173,.08)}
    .content-card h3{margin-bottom:7px}
    .content-card h3 a:hover{color:var(--blue-bright)}
    .card-summary{font-size:13px;line-height:1.7;margin-bottom:12px}
    .meta-line{display:flex;justify-content:space-between;gap:10px;color:var(--dim);font-size:12px;border-top:1px solid rgba(143,194,255,.11);padding-top:11px}
    .card-action{margin-top:15px;color:var(--blue-bright);font-size:13px;font-weight:700}
    .card-action span{margin-left:5px;transition:margin .2s}
    .content-card:hover .card-action span{margin-left:10px}
    .side-stack{display:grid;gap:18px}
    .side-panel{border-radius:var(--radius);padding:21px}
    .side-panel h3{font-size:17px;margin-bottom:15px}
    .side-list{list-style:none;padding:0;margin:0}
    .side-list li{border-top:1px solid rgba(143,194,255,.12);padding:12px 0}
    .side-list li:first-child{border-top:0;padding-top:0}
    .side-list a{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px}
    .side-list a:hover{color:var(--blue-bright)}
    .side-list b{color:var(--dim);font-weight:500}
    .notice-panel{padding:18px;border-radius:var(--radius-sm);border-color:rgba(255,212,122,.24);background:rgba(83,62,25,.2)}
    .notice-panel strong{display:block;color:var(--warning);font-size:14px;margin-bottom:5px}
    .notice-panel p{font-size:12px;margin:0;line-height:1.65}
    .pagination-wrap{display:flex;justify-content:center;align-items:center;gap:10px;padding:42px 0 0}
    .page-dot{width:10px;height:10px;border:1px solid var(--dim);border-radius:50%;background:transparent}
    .page-dot.active{background:var(--blue);border-color:var(--blue);box-shadow:0 0 12px rgba(56,173,255,.7)}
    .related{padding-top:35px;border-top:1px solid rgba(143,194,255,.12)}
    .related-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .related-box{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(14,35,64,.55)}
    .related-box h3{margin-bottom:8px}
    .related-box p{font-size:13px;margin-bottom:14px}
    .faq-section{padding-top:60px}
    .faq-list{max-width:900px;margin:0 auto}
    .faq-item{border-radius:var(--radius-sm);margin-bottom:10px;overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;border:0;background:transparent;color:var(--text);padding:17px 20px;font-weight:700}
    .faq-question:hover{background:rgba(56,173,255,.08)}
    .faq-question span:last-child{color:var(--blue-bright);font-size:20px}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question{color:var(--blue-bright)}
    .cta-panel{position:relative;overflow:hidden;padding:45px;border-radius:24px;text-align:center;background:linear-gradient(115deg,rgba(19,58,99,.85),rgba(41,40,88,.7))}
    .cta-panel:before{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(118,212,255,.2);border-radius:50%;right:-90px;top:-190px;box-shadow:0 0 0 35px rgba(87,226,223,.04),0 0 0 76px rgba(87,226,223,.03)}
    .cta-panel>*{position:relative;z-index:1}
    .cta-panel h2{margin-bottom:10px}
    .cta-panel p{max-width:670px;margin:0 auto 22px}
    .footer{border-top:1px solid rgba(143,194,255,.14);background:rgba(3,10,21,.82);padding:46px 0 22px}
    .footer-main{display:grid;grid-template-columns:1.5fr .7fr .9fr;gap:46px}
    .footer .brand{margin-bottom:14px}
    .footer p{font-size:13px;max-width:430px;margin:0}
    .footer h3{font-size:14px;color:var(--text);margin-bottom:12px}
    .footer-links{list-style:none;margin:0;padding:0}
    .footer-links li{margin:5px 0}
    .footer-links a{color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--blue-bright)}
    .footer-bottom{display:flex;justify-content:space-between;gap:15px;margin-top:35px;padding-top:18px;border-top:1px solid rgba(143,194,255,.1);color:var(--dim);font-size:12px}
    @media(max-width:1024px){
      .filter-bar{grid-template-columns:1.5fr 1fr 1fr;}.filter-bar .field:first-child{grid-column:span 3}
      .content-layout{grid-template-columns:1fr 250px}.card-inner{grid-template-columns:155px 1fr}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--max))}
      .nav-wrap{height:68px}.desktop-nav,.location-entry{display:none}.menu-button{display:block}
      .mobile-menu{padding:16px;background:rgba(5,15,29,.98);border-top:1px solid var(--line)}
      .mobile-menu.open{display:block}.mobile-menu a{display:block;padding:12px;color:var(--muted);border-bottom:1px solid rgba(143,194,255,.1)}
      .mobile-menu a.active,.mobile-menu a:hover{color:var(--blue-bright)}
      .category-head{padding:44px 0 30px}.head-grid{grid-template-columns:1fr;gap:25px}
      .section{padding:62px 0}.filter-bar{grid-template-columns:1fr 1fr}.filter-bar .field:first-child{grid-column:span 2}
      .content-layout{grid-template-columns:1fr}.side-stack{order:2}.card-grid{grid-template-columns:1fr}.content-card:first-child{grid-column:auto}
      .card-inner,.content-card:not(:first-child) .card-inner{display:grid;grid-template-columns:145px minmax(0,1fr);gap:16px}
      .related-grid{grid-template-columns:1fr}.footer-main{grid-template-columns:1fr 1fr;gap:28px}
      .footer-main>div:first-child{grid-column:span 2}
    }
    @media(max-width:520px){
      h1{font-size:34px}.filter-bar{grid-template-columns:1fr}.filter-bar .field:first-child{grid-column:auto}
      .card-inner,.content-card:not(:first-child) .card-inner{display:block}.cover-art{min-height:165px;margin-bottom:15px}
      .status-panel{grid-template-columns:1fr}.result-head{align-items:flex-start;flex-direction:column;gap:3px}
      .cta-panel{padding:30px 20px}.footer-main{grid-template-columns:1fr}.footer-main>div:first-child{grid-column:auto}
      .footer-bottom{flex-direction:column;gap:5px}
    }