/* roulang page: index */
:root{
            --ink:#061522;--night:#081d2d;--panel:#102d40;--panel-2:#12384a;
            --cyan:#62f2d0;--mint:#9bcfae;--ice:#e8fbf5;--muted:#9bb4c0;
            --line:rgba(174,239,226,.18);--soft:rgba(100,242,208,.1);
            --shadow:0 22px 60px rgba(0,0,0,.28);--glow:0 0 26px rgba(98,242,208,.2);
            --radius:20px
        }
        *,*:before,*:after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--ink);color:var(--ice);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
        body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.23;background-image:linear-gradient(rgba(103,238,209,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(103,238,209,.06) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(to bottom,#000,transparent 88%);z-index:-2}
        body:after{content:"";position:fixed;width:540px;height:540px;right:-180px;top:80px;background:rgba(42,153,151,.15);filter:blur(100px);border-radius:50%;pointer-events:none;z-index:-1}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{max-width:100%;display:block}
        .container{max-width:1180px}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(6,21,34,.76);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:.25s}
        .site-header.scrolled{background:rgba(6,21,34,.95);border-color:var(--line)}
        .navbar{padding:17px 0}
        .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.04em;line-height:1.15;max-width:310px}
        .brand-mark{width:35px;height:35px;border:1px solid var(--cyan);border-radius:11px;display:grid;place-items:center;color:var(--cyan);box-shadow:var(--glow);font-size:18px}
        .brand-text{font-size:15px}
        .navbar-toggler{border:1px solid var(--line);padding:9px 11px}.navbar-toggler:focus{box-shadow:0 0 0 3px var(--soft)}
        .navbar-toggler-icon{filter:invert(1);width:1.2em;height:1.2em}
        .nav-link{color:var(--muted)!important;margin:0 9px;padding:8px 13px!important;border-radius:10px;font-size:14px}
        .nav-link:hover,.nav-link.active{color:var(--ice)!important;background:var(--soft)}
        .nav-link.active{box-shadow:inset 0 -2px var(--cyan)}
        .btn-main,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:12px;padding:12px 20px;font-weight:700;font-size:14px;transition:.25s}
        .btn-main{background:var(--cyan);color:#062127;box-shadow:0 8px 24px rgba(98,242,208,.18);border:1px solid var(--cyan)}
        .btn-main:hover{transform:translateY(-3px);background:#b2ffe7;color:#062127;box-shadow:0 13px 32px rgba(98,242,208,.3)}
        .btn-ghost{border:1px solid var(--line);color:var(--ice);background:rgba(255,255,255,.035)}
        .btn-ghost:hover{border-color:var(--cyan);background:var(--soft);transform:translateY(-3px)}
        .hero{padding:86px 0 74px;position:relative;overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:62px;align-items:center}
        .eyebrow,.section-kicker{color:var(--cyan);font-size:12px;letter-spacing:.18em;font-weight:800;text-transform:uppercase}
        h1,h2,h3{letter-spacing:-.045em;line-height:1.2}
        h1{font-size:clamp(38px,5.2vw,70px);margin:17px 0 22px;max-width:760px}
        h1 em{font-style:normal;color:var(--cyan);position:relative}
        h1 em:after{content:"";height:5px;position:absolute;left:3px;right:4px;bottom:-5px;background:var(--cyan);opacity:.45;border-radius:5px}
        .hero-copy{font-size:18px;color:#c1d5d8;max-width:650px}
        .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:30px}
        .hero-meta{display:flex;gap:23px;flex-wrap:wrap;margin-top:31px;color:var(--muted);font-size:13px}
        .hero-meta strong{display:block;color:var(--ice);font-size:18px;line-height:1.2}
        .signal-panel{border:1px solid var(--line);background:linear-gradient(145deg,rgba(28,74,89,.75),rgba(10,33,49,.9));border-radius:26px;padding:25px;box-shadow:var(--shadow);position:relative}
        .signal-panel:before{content:"";position:absolute;inset:12px;border:1px solid rgba(98,242,208,.1);border-radius:18px;pointer-events:none}
        .panel-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;margin-bottom:22px}
        .live-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);margin-right:7px}
        .signal-title{font-size:26px;font-weight:800;margin-bottom:18px}
        .signal-row{display:grid;grid-template-columns:30px 1fr auto;gap:12px;align-items:center;padding:15px 0;border-top:1px solid var(--line)}
        .signal-row small{color:var(--muted);display:block}.signal-row b{font-size:15px}.rank{color:var(--cyan);font-weight:800}
        .bar{height:5px;background:#234655;border-radius:8px;margin-top:8px;overflow:hidden}.bar i{display:block;height:100%;background:var(--cyan);border-radius:8px}
        .section{padding:92px 0}.section-dark{background:rgba(15,40,56,.55);border-top:1px solid rgba(174,239,226,.07);border-bottom:1px solid rgba(174,239,226,.07)}
        .section-head{max-width:710px;margin-bottom:39px}.section-head h2{font-size:clamp(29px,4vw,46px);margin:10px 0 14px}.section-head p{color:var(--muted);margin:0;font-size:16px}
        .story-line{position:relative;padding-left:55px;max-width:940px}.story-line:before{content:"";position:absolute;left:17px;top:12px;bottom:12px;width:1px;background:linear-gradient(var(--cyan),rgba(98,242,208,.08))}
        .story-item{position:relative;display:grid;grid-template-columns:170px 1fr;gap:30px;padding:0 0 34px;margin-bottom:25px;border-bottom:1px solid rgba(174,239,226,.1)}
        .story-item:last-child{border-bottom:0}.story-item:before{content:"";position:absolute;left:-44px;top:8px;width:12px;height:12px;border:3px solid var(--cyan);background:var(--ink);border-radius:50%;box-shadow:0 0 14px rgba(98,242,208,.6)}
        .story-label{color:var(--cyan);font-size:12px;letter-spacing:.1em;font-weight:800}.story-item h3{font-size:23px;margin:0 0 7px}.story-item p{color:var(--muted);margin:0;font-size:15px}
        .entry-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}.entry-card{min-height:250px;padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(130deg,rgba(21,62,77,.86),rgba(9,28,43,.8));position:relative;overflow:hidden}.entry-card:after{content:"青";position:absolute;right:25px;bottom:-35px;font-size:190px;color:rgba(98,242,208,.05);font-weight:900}.entry-card h3{font-size:27px;margin:18px 0 10px;max-width:470px}.entry-card p{color:var(--muted);max-width:510px}.entry-link{color:var(--cyan);font-weight:700;font-size:14px}.entry-small{display:flex;flex-direction:column;justify-content:space-between;min-height:250px;background:rgba(255,255,255,.035)}
        .resource-layout{display:grid;grid-template-columns:1fr .65fr;gap:28px}.resource-list{border-top:1px solid var(--line)}.resource-item{display:grid;grid-template-columns:58px 1fr auto;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.resource-number{font-size:25px;color:var(--cyan);font-weight:800}.resource-item h3{font-size:18px;margin:0 0 4px}.resource-item p{color:var(--muted);margin:0;font-size:14px}.arrow{font-size:23px;color:var(--cyan)}
        .info-box{padding:27px;border:1px solid var(--line);background:rgba(98,242,208,.06);border-radius:18px}.info-box h3{font-size:22px}.info-box p{color:var(--muted);font-size:14px}.tag{display:inline-block;color:var(--cyan);background:var(--soft);border:1px solid rgba(98,242,208,.22);border-radius:99px;padding:4px 10px;font-size:12px;margin:3px}
        .result-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}.result-main{padding:34px;border-radius:22px;background:var(--panel);border:1px solid var(--line)}.result-main h3{font-size:29px}.result-main p{color:var(--muted)}.result-words{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px}.result-word{padding:10px 14px;border-left:2px solid var(--cyan);background:rgba(255,255,255,.035);color:#d4e8e5}.result-side{display:grid;gap:22px}.metric{padding:25px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.035)}.metric strong{display:block;font-size:28px;color:var(--cyan)}.metric span{color:var(--muted);font-size:13px}
        .faq-wrap{max-width:920px}.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)!important}.accordion-button{background:transparent;color:var(--ice);font-weight:700;padding:21px 0;font-size:17px;box-shadow:none!important}.accordion-button:not(.collapsed){color:var(--cyan);background:transparent}.accordion-button:after{filter:invert(1);opacity:.7}.accordion-body{color:var(--muted);padding:0 38px 22px 0;font-size:15px}
        .quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.quote{padding:32px;border:1px solid var(--line);border-radius:22px;background:rgba(16,45,64,.74);box-shadow:var(--shadow)}.quote-mark{font-size:46px;color:var(--cyan);line-height:.7}.quote p{font-size:18px;margin:19px 0;color:#d9eae7}.quote footer{color:var(--muted);font-size:13px}
        .cta{padding:65px 0}.cta-panel{padding:42px 48px;border:1px solid rgba(98,242,208,.35);border-radius:25px;background:radial-gradient(circle at 90% 10%,rgba(98,242,208,.14),transparent 37%),rgba(16,45,64,.8);display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-panel h2{font-size:35px;margin:10px 0}.cta-panel p{color:var(--muted);margin:0;max-width:670px}.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
        .site-footer{padding:48px 0 25px;border-top:1px solid var(--line);background:#061522}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:35px}.footer-brand{font-size:19px;font-weight:800}.footer-text{color:var(--muted);font-size:14px;max-width:370px;margin-top:13px}.footer-title{font-size:13px;color:var(--cyan);font-weight:800;margin-bottom:13px}.footer-links{display:grid;gap:8px;color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--cyan)}.copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:20px;color:#718995;font-size:12px;display:flex;justify-content:space-between;gap:15px}
        .float-cta{position:fixed;right:22px;bottom:22px;z-index:10;border-radius:50px;padding:12px 17px;background:var(--cyan);color:#062127;font-weight:800;font-size:13px;box-shadow:var(--glow)}
        .float-cta:hover{transform:translateY(-3px);color:#062127}
        :focus-visible{outline:3px solid rgba(98,242,208,.65);outline-offset:3px}
        @media(max-width:991px){.hero-grid,.entry-grid,.resource-layout,.result-grid{grid-template-columns:1fr}.hero{padding-top:65px}.navbar .btn-main{display:none}.nav-link{margin:4px 0}.navbar-collapse{padding-top:15px}.cta-panel{display:block}.cta-actions{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr}}
        @media(max-width:767px){.section{padding:67px 0}.hero{padding:52px 0 58px}.hero-copy{font-size:16px}.signal-panel{padding:20px}.story-line{padding-left:38px}.story-line:before{left:10px}.story-item{display:block;padding-bottom:25px}.story-item:before{left:-34px}.story-label{margin-bottom:9px;display:block}.story-item h3{font-size:20px}.quote-grid{grid-template-columns:1fr}.cta-panel{padding:30px 24px}.cta-panel h2{font-size:28px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}.float-cta{right:14px;bottom:14px}}
        @media(max-width:520px){h1{font-size:39px}.hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}.resource-item{grid-template-columns:40px 1fr 20px;gap:12px}.resource-item h3{font-size:16px}.resource-item p{font-size:13px}.signal-title{font-size:22px}}

/* roulang page: category1 */
:root{
      --ink:#061522;--night:#081d2d;--panel:#102d40;--panel-2:#12384a;
      --cyan:#62f2d0;--mint:#9bcfae;--ice:#e8fbf5;--muted:#9bb4c0;
      --line:rgba(174,239,226,.18);--soft:rgba(100,242,208,.1);
      --shadow:0 22px 60px rgba(0,0,0,.28);--glow:0 0 26px rgba(98,242,208,.2);
      --radius:20px
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--ink);color:var(--ice);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.23;background-image:linear-gradient(rgba(103,238,209,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(103,238,209,.06) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(to bottom,#000,transparent 88%);z-index:-2}
    body:after{content:"";position:fixed;width:540px;height:540px;right:-180px;top:80px;background:rgba(42,153,151,.15);filter:blur(100px);border-radius:50%;pointer-events:none;z-index:-1}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    .container{max-width:1180px}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(6,21,34,.76);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:.25s}
    .site-header.scrolled{background:rgba(6,21,34,.95);border-color:var(--line)}
    .navbar{padding:17px 0}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.04em;line-height:1.15;max-width:310px}
    .brand-mark{width:35px;height:35px;border:1px solid var(--cyan);border-radius:11px;display:grid;place-items:center;color:var(--cyan);box-shadow:var(--glow);font-size:18px}
    .brand-text{font-size:15px}
    .navbar-toggler{border:1px solid var(--line);padding:9px 11px}
    .navbar-toggler:focus{box-shadow:0 0 0 3px var(--soft)}
    .navbar-toggler-icon{filter:invert(1);width:1.2em;height:1.2em}
    .nav-link{color:var(--muted)!important;margin:0 9px;padding:8px 13px!important;border-radius:10px;font-size:14px}
    .nav-link:hover,.nav-link.active{color:var(--ice)!important;background:var(--soft)}
    .nav-link.active{box-shadow:inset 0 -2px var(--cyan)}
    .btn-main,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:12px;padding:12px 20px;font-weight:700;font-size:14px;transition:.25s;border:1px solid transparent}
    .btn-main{background:var(--cyan);color:#062127;box-shadow:0 8px 24px rgba(98,242,208,.18)}
    .btn-main:hover{transform:translateY(-3px);background:#b2ffe7;color:#062127;box-shadow:0 13px 32px rgba(98,242,208,.3)}
    .btn-ghost{border-color:var(--line);color:var(--ice);background:rgba(255,255,255,.035)}
    .btn-ghost:hover{border-color:var(--cyan);background:var(--soft);transform:translateY(-3px)}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(98,242,208,.48);outline-offset:3px}
    .page-hero{padding:78px 0 56px;border-bottom:1px solid rgba(174,239,226,.1)}
    .eyebrow,.section-kicker{color:var(--cyan);font-size:12px;letter-spacing:.18em;font-weight:800}
    .breadcrumb{--bs-breadcrumb-divider-color:var(--muted);margin:20px 0 28px;font-size:13px}
    .breadcrumb-item,.breadcrumb-item a{color:var(--muted)}
    .breadcrumb-item.active{color:var(--ice)}
    h1,h2,h3{font-weight:800;letter-spacing:-.035em}
    h1{font-size:clamp(38px,6vw,68px);line-height:1.12;margin:0 0 22px;max-width:850px}
    .lead-copy{font-size:18px;color:#c1d5d8;max-width:720px;margin:0}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:29px}
    .progress-shell{margin-top:38px;max-width:640px;padding:18px 20px;border:1px solid var(--line);border-radius:16px;background:rgba(16,45,64,.62)}
    .progress-label{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin-bottom:10px}
    .progress{height:6px;background:rgba(255,255,255,.08);border-radius:20px}
    .progress-bar{background:var(--cyan);box-shadow:0 0 14px rgba(98,242,208,.45)}
    .section{padding:82px 0}
    .section-dark{background:rgba(15,40,56,.55);border-top:1px solid rgba(174,239,226,.07);border-bottom:1px solid rgba(174,239,226,.07)}
    .section-head{max-width:730px;margin-bottom:38px}
    .section-head h2{font-size:clamp(29px,4vw,46px);margin:10px 0 14px}
    .section-head p{color:var(--muted);margin:0}
    .feature-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;padding:28px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(130deg,rgba(21,62,77,.9),rgba(9,28,43,.82));box-shadow:var(--shadow);overflow:hidden}
    .visual-space{min-height:330px;border-radius:17px;position:relative;overflow:hidden;background:radial-gradient(circle at 28% 25%,rgba(98,242,208,.55),transparent 17%),linear-gradient(145deg,#174a56 0%,#0d3042 44%,#071926 100%)}
    .visual-space:before{content:"";position:absolute;inset:18% -12% 8% 12%;border:1px solid rgba(232,251,245,.42);transform:skewY(-12deg);box-shadow:0 0 0 18px rgba(98,242,208,.04),0 0 0 36px rgba(98,242,208,.035)}
    .visual-space:after{content:"青青空间";position:absolute;right:24px;bottom:22px;color:rgba(232,251,245,.72);font-size:14px;letter-spacing:.2em}
    .feature-copy{padding:12px 12px 10px}
    .tag{display:inline-block;color:var(--cyan);background:var(--soft);border:1px solid rgba(98,242,208,.22);border-radius:99px;padding:4px 10px;font-size:12px;margin:3px}
    .feature-copy h3{font-size:31px;margin:22px 0 12px}
    .feature-copy p{color:var(--muted);margin-bottom:25px}
    .index-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
    .index-list li{display:flex;align-items:center;gap:16px;padding:15px 0;border-bottom:1px solid var(--line);color:#c9d9da}
    .index-list strong{color:var(--cyan);font-size:13px;min-width:34px}
    .info-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
    .side-note{border-left:2px solid var(--cyan);padding:8px 0 8px 22px;color:var(--muted)}
    .side-note strong{display:block;color:var(--ice);font-size:21px;margin-bottom:8px}
    .info-list{border-top:1px solid var(--line)}
    .info-item{display:grid;grid-template-columns:70px 1fr auto;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
    .info-number{font-size:28px;color:var(--cyan);font-weight:800}
    .info-item h3{font-size:20px;margin:0 0 5px}
    .info-item p{color:var(--muted);font-size:14px;margin:0}
    .arrow{font-size:24px;color:var(--cyan)}
    .focus-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
    .focus-card{padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);min-height:210px}
    .focus-card.highlight{background:radial-gradient(circle at 88% 10%,rgba(98,242,208,.15),transparent 35%),var(--panel-2)}
    .focus-card h3{font-size:26px;margin:15px 0 9px}
    .focus-card p{color:var(--muted);margin:0}
    .quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .quote{padding:29px;border:1px solid var(--line);border-radius:20px;background:rgba(16,45,64,.72);box-shadow:var(--shadow)}
    .quote-mark{font-size:42px;line-height:1;color:var(--cyan)}
    .quote p{font-size:18px;color:#d8e8e5;margin:8px 0 20px}
    .quote footer{color:var(--muted);font-size:13px}
    .faq-wrap{max-width:900px}
    .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)!important}
    .accordion-button{background:transparent;color:var(--ice);font-weight:700;padding:21px 0;font-size:17px;box-shadow:none!important}
    .accordion-button:not(.collapsed){color:var(--cyan);background:transparent}
    .accordion-button:after{filter:invert(1);opacity:.7}
    .accordion-body{color:var(--muted);padding:0 38px 22px 0;font-size:15px}
    .cta{padding:66px 0}
    .cta-panel{padding:42px 48px;border:1px solid rgba(98,242,208,.35);border-radius:25px;background:radial-gradient(circle at 90% 10%,rgba(98,242,208,.14),transparent 37%),rgba(16,45,64,.8);display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-panel h2{font-size:35px;margin:10px 0 10px}
    .cta-panel p{color:var(--muted);margin:0;max-width:620px}
    footer.site-footer{padding:30px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
    .footer-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
    .footer-brand{color:var(--ice);font-weight:700}
    .footer-links{display:flex;gap:20px;flex-wrap:wrap}
    .footer-links a:hover{color:var(--cyan)}
    .copyright{font-size:12px;color:#78929d}
    @media(max-width:991px){
      .hero-grid,.feature-panel,.info-layout,.focus-grid{grid-template-columns:1fr}
      .feature-panel{gap:25px}
      .visual-space{min-height:270px}
      .navbar-nav{padding-top:14px}
      .nav-link{margin:3px 0}
    }
    @media(max-width:767px){
      .page-hero{padding:57px 0 42px}
      .section{padding:62px 0}
      .feature-panel{padding:18px}
      .info-item{grid-template-columns:52px 1fr auto;gap:12px}
      .info-number{font-size:23px}
      .quote-grid{grid-template-columns:1fr}
      .cta-panel{padding:30px 24px;display:block}
      .cta-panel .hero-actions{margin-top:23px}
      .footer-inner{display:block}
      .footer-links{margin:16px 0}
    }
    @media(max-width:520px){
      body{font-size:15px}
      h1{font-size:39px}
      .lead-copy{font-size:16px}
      .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
      .visual-space{min-height:220px}
      .feature-copy h3{font-size:26px}
      .info-item{grid-template-columns:1fr;gap:5px}
      .arrow{display:none}
      .cta-panel h2{font-size:29px}
    }