/* roulang page: index */
:root{
      --page:#f5f8fc;--surface:#fff;--surface-muted:#edf4fb;--text:#17283d;
      --text-secondary:#617287;--primary:#2476d8;--primary-hover:#155eb5;
      --secondary:#7d91b2;--border:#dce6f1;--success:#2d9278;--focus:#9bc7fa;
      --radius:20px;--shadow:0 16px 42px rgba(30, seventy, 110, .09);
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--page);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}
    .container{width:min(1180px,calc(100% - 40px));margin-inline:auto}.section{padding:96px 0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--primary);border-radius:99px}.section-head{max-width:680px;margin-bottom:40px}.section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.2;letter-spacing:-.04em;margin:12px 0 14px}.section-head p{margin:0;color:var(--text-secondary);font-size:16px}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);border-bottom:1px solid var(--border);backdrop-filter:blur(14px)}.nav-wrap{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}.brand-mark{width:32px;height:32px;border-radius:10px;background:var(--primary);position:relative;box-shadow:0 7px 16px rgba(36,118,216,.22)}.brand-mark:after{content:"";position:absolute;width:10px;height:10px;border:2px solid #fff;border-radius:50%;left:11px;top:7px}.brand-mark:before{content:"";position:absolute;width:14px;height:2px;background:#fff;left:9px;bottom:8px;border-radius:5px}
    .steps{display:flex;align-items:center;gap:0}.step{display:flex;align-items:center;gap:8px;color:#8a9aae;font-size:13px;font-weight:700}.step:not(:last-child):after{content:"";width:35px;height:1px;background:var(--border);margin:0 12px}.step-num{width:25px;height:25px;border:1px solid var(--border);border-radius:50%;display:grid;place-items:center;font-size:11px}.step.active{color:var(--primary)}.step.active .step-num{background:var(--primary);color:#fff;border-color:var(--primary)}.menu-btn{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 12px;color:var(--text)}
    .hero{padding:78px 0 86px;background:#fff;border-bottom:1px solid var(--border)}.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:64px;align-items:center}.hero h1{font-size:clamp(40px,6vw,68px);line-height:1.1;letter-spacing:-.06em;margin:18px 0 22px}.hero h1 span{color:var(--primary)}.hero-copy{font-size:18px;color:var(--text-secondary);max-width:620px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:12px;font-weight:700;transition:.22s ease}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 9px 20px rgba(36,118,216,.2)}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}.btn-secondary{background:#fff;border-color:var(--border);color:var(--text)}.btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}.btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
    .entry-board{border:1px solid var(--border);border-radius:26px;background:var(--surface);padding:24px;box-shadow:var(--shadow);transform:rotate(1deg)}.board-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:18px;margin-bottom:18px}.live{font-size:12px;color:var(--success);font-weight:700}.live:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--success);margin-right:6px}.entry-list{display:grid;gap:12px}.entry{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;border:1px solid var(--border);border-radius:16px;background:linear-gradient(90deg,#f8fbff,#fff);transition:.22s}.entry:hover{transform:translateX(4px);border-color:#a9c9ed}.entry strong{display:block;font-size:16px}.entry small{color:var(--text-secondary)}.entry-tag,.tag{display:inline-flex;align-items:center;border-radius:99px;padding:4px 9px;background:#e8f2ff;color:var(--primary);font-size:12px;font-weight:700;white-space:nowrap}.board-foot{display:flex;gap:10px;margin-top:18px;color:var(--text-secondary);font-size:12px}
    .soft{background:var(--surface-muted)}.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.pain-card{display:flex;gap:18px;padding:24px;background:#fff;border:1px solid var(--border);border-radius:18px}.pain-index{color:var(--primary);font-size:22px;font-weight:800}.pain-card h3{margin:0 0 6px;font-size:18px}.pain-card p{margin:0;color:var(--text-secondary);font-size:14px}
    .solution-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}.process{position:relative;border-left:2px solid #cfe0f2;margin-left:12px}.process-item{position:relative;padding:0 0 30px 30px}.process-item:last-child{padding-bottom:0}.process-item:before{content:"";position:absolute;left:-10px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;border:4px solid var(--primary)}.process-item h3{margin:0 0 5px;font-size:19px}.process-item p{margin:0;color:var(--text-secondary);font-size:14px}.feature-panel{background:#fff;border:1px solid var(--border);border-radius:22px;padding:28px;box-shadow:var(--shadow)}.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.filter-chip{padding:9px 13px;border-radius:10px;background:#f3f7fc;color:var(--text-secondary);font-size:13px}.filter-chip.selected{background:#dfeeff;color:var(--primary);font-weight:700}.mini-list{display:grid;gap:10px}.mini-list li{list-style:none;display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--border);font-size:14px}.mini-list ul{padding:0;margin:0}.mini-list time{color:var(--text-secondary);white-space:nowrap}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:32px}.metric{padding:24px;background:#fff;border:1px solid var(--border);border-radius:18px}.metric strong{font-size:32px;letter-spacing:-.05em;color:var(--primary)}.metric span{display:block;color:var(--text-secondary);font-size:13px;margin-top:4px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare-card{padding:24px;border-radius:18px;border:1px solid var(--border);background:#fff}.compare-card.highlight{background:#eaf4ff;border-color:#b5d4f2}.compare-card h3{margin:0 0 12px}.compare-card p{margin:0;color:var(--text-secondary);font-size:14px}
    .quote-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:16px}.quote{background:#fff;border:1px solid var(--border);border-radius:20px;padding:25px;box-shadow:0 10px 26px rgba(30,70,110,.05)}.quote.large{padding:32px}.quote-mark{font-size:36px;color:#9ec7ed;line-height:1}.quote p{margin:12px 0 20px;font-size:15px}.quote footer{color:var(--text-secondary);font-size:13px}.quote .tag{margin-top:6px}
    .info-wrap{display:grid;grid-template-columns:1fr 330px;gap:28px}.info-list{background:#fff;border:1px solid var(--border);border-radius:20px;padding:10px 24px}.info-item{display:flex;justify-content:space-between;gap:20px;padding:19px 0;border-bottom:1px solid var(--border)}.info-item:last-child{border:0}.info-item a:hover{color:var(--primary)}.info-item p{margin:4px 0 0;color:var(--text-secondary);font-size:13px}.info-item time{font-size:12px;color:var(--text-secondary);white-space:nowrap}.notice{padding:25px;border-radius:20px;background:#e6f1fc;border:1px solid #c9def2}.notice h3{margin:0 0 10px}.notice p{font-size:14px;color:var(--text-secondary);margin:0}
    .faq-list{display:grid;gap:10px;max-width:850px}.faq-list details{background:#fff;border:1px solid var(--border);border-radius:15px;padding:0 20px}.faq-list details[open]{border-color:#acd0f3;background:#fbfdff}.faq-list summary{cursor:pointer;list-style:none;padding:19px 30px 19px 0;font-weight:700;position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--primary);font-size:20px}.faq-list details[open] summary:after{content:"－"}.faq-answer{padding:0 0 19px;color:var(--text-secondary);font-size:14px}
    .cta{padding:65px 0;background:#163b68;color:#fff}.cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{margin:0 0 10px;font-size:clamp(27px,4vw,42px);line-height:1.2}.cta p{margin:0;color:#c7d9ed}.cta .btn-primary{background:#fff;color:#165da9}.cta .btn-primary:hover{background:#e9f3ff}
    .site-footer{background:#102d50;color:#c8d7e8;padding:48px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:35px}.footer-brand{color:#fff;font-size:20px}.footer-title{font-size:13px;color:#fff;font-weight:700;margin-bottom:13px}.footer-links{display:grid;gap:8px;font-size:13px}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}.top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--primary);box-shadow:var(--shadow);z-index:10}
    @media(max-width:900px){.steps{display:none}.menu-btn{display:block}.hero-grid,.solution-layout{grid-template-columns:1fr;gap:38px}.hero{padding-top:55px}.entry-board{transform:none}.metrics{grid-template-columns:repeat(2,1fr)}.quote-grid{grid-template-columns:1fr 1fr}.quote.large{grid-column:span 2}.info-wrap{grid-template-columns:1fr}}
    @media(max-width:640px){.container{width:min(100% - 28px,1180px)}.section{padding:66px 0}.nav-wrap{min-height:68px}.brand{font-size:14px}.brand-mark{width:29px;height:29px}.hero h1{font-size:40px}.hero-copy{font-size:16px}.actions .btn{width:100%}.pain-grid,.compare{grid-template-columns:1fr}.metrics{gap:10px}.metric{padding:18px}.metric strong{font-size:27px}.quote-grid{grid-template-columns:1fr}.quote.large{grid-column:auto}.info-item{display:block}.info-item time{display:block;margin-top:7px}.cta-box{display:block}.cta .btn{margin-top:24px;width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:26px}.footer-grid>div:first-child{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
    @media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
      --page:#f5f8fc;--surface:#fff;--surface-muted:#edf4fb;--text:#17283d;
      --text-secondary:#617287;--primary:#2476d8;--primary-hover:#155eb5;
      --secondary:#7d91b2;--border:#dce6f1;--success:#2d9278;--focus:#9bc7fa;
      --danger-muted:#a56d78;--radius:20px;--shadow:0 16px 42px rgba(30,70,110,.09)
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--page);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);backdrop-filter:blur(14px)}
    .nav-wrap{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:32px;height:32px;border-radius:10px;background:var(--primary);position:relative;box-shadow:0 7px 16px rgba(36,118,216,.22)}
    .brand-mark:after{content:"";position:absolute;width:10px;height:10px;border:2px solid #fff;border-radius:50%;left:11px;top:7px}
    .brand-mark:before{content:"";position:absolute;width:14px;height:2px;background:#fff;left:9px;bottom:8px;border-radius:5px}
    .steps{display:flex;align-items:center;gap:0}
    .step{display:flex;align-items:center;gap:9px;color:var(--secondary);font-size:13px;font-weight:700;padding:10px 18px;position:relative;transition:.2s ease}
    .step:not(:last-child):after{content:"";height:1px;width:24px;background:var(--border);position:absolute;right:-12px;top:50%}
    .step-num{width:28px;height:28px;border:1px solid var(--border);border-radius:50%;display:grid;place-items:center;font-size:11px;background:#fff}
    .step:hover,.step.active{color:var(--primary)}
    .step.active .step-num{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 5px 12px rgba(36,118,216,.2)}
    .menu-btn{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 12px;color:var(--text)}
    .page-hero{padding:72px 0 58px;background:#fff;border-bottom:1px solid var(--border)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.06em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--primary);border-radius:99px}
    .page-hero h1{font-size:clamp(38px,5vw,60px);line-height:1.12;letter-spacing:-.06em;margin:16px 0 14px}
    .page-hero p{max-width:680px;margin:0;color:var(--text-secondary);font-size:17px}
    .breadcrumb{display:flex;gap:9px;align-items:center;margin-top:26px;color:var(--text-secondary);font-size:13px}
    .breadcrumb a:hover{color:var(--primary)}
    .section{padding:76px 0}
    .section-head{max-width:680px;margin-bottom:30px}
    .section-head h2{font-size:clamp(27px,4vw,42px);line-height:1.2;letter-spacing:-.04em;margin:10px 0 12px}
    .section-head p{margin:0;color:var(--text-secondary)}
    .filter-panel{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:20px;box-shadow:var(--shadow)}
    .filter-form{display:flex;gap:12px;align-items:end;flex-wrap:wrap}
    .field{display:grid;gap:6px;flex:1 1 210px}
    .field label{font-size:12px;font-weight:700;color:var(--text-secondary)}
    .field input,.field select{width:100%;height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);padding:0 13px;outline:0}
    .field input:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,118,216,.12)}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:700;transition:.22s ease}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 9px 20px rgba(36,118,216,.18)}
    .btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}
    .btn-secondary{background:#fff;border-color:var(--border);color:var(--text)}
    .btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
    .tag{display:inline-flex;align-items:center;border-radius:99px;padding:4px 10px;background:#e8f2ff;color:var(--primary);font-size:12px;font-weight:700;white-space:nowrap}
    .tag.soft{background:#eef3f8;color:var(--text-secondary)}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}
    .feature{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
    .cover{min-height:300px;border-radius:22px;background:linear-gradient(135deg,#d9ebff,#f3f7fc 58%,#dbe9f5);border:1px solid #cbddec;position:relative;overflow:hidden;padding:30px;display:flex;align-items:end}
    .cover:before,.cover:after{content:"";position:absolute;border:1px solid rgba(36,118,216,.18);border-radius:50%}
    .cover:before{width:260px;height:260px;right:-80px;top:-70px}
    .cover:after{width:150px;height:150px;left:-45px;top:35px}
    .cover-content{position:relative;z-index:1;max-width:400px}
    .cover h3{font-size:30px;line-height:1.25;margin:12px 0 8px}
    .cover p{margin:0;color:var(--text-secondary);font-size:14px}
    .feature-info{background:#fff;border:1px solid var(--border);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
    .feature-info h3{font-size:24px;line-height:1.35;margin:8px 0 12px}
    .feature-info p{color:var(--text-secondary);font-size:14px;margin:0 0 22px}
    .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--text-secondary);font-size:12px}
    .browse-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:28px;align-items:start}
    .content-list{display:grid;gap:13px}
    .content-card{display:grid;grid-template-columns:150px minmax(0,1fr) auto;gap:20px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:18px;padding:15px;transition:.22s ease}
    .content-card:hover{transform:translateY(-3px);border-color:#acd0f3;box-shadow:var(--shadow)}
    .thumb{height:106px;border-radius:13px;background:linear-gradient(140deg,#d7e9fa,#f0f5fa);display:grid;place-items:center;color:var(--primary);font-size:26px;border:1px solid #d0e0ef}
    .content-card h3{font-size:18px;line-height:1.35;margin:7px 0 5px}
    .content-card p{font-size:13px;color:var(--text-secondary);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .side-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:21px;position:sticky;top:105px}
    .side-card h3{font-size:16px;margin:0 0 14px}
    .side-links{display:grid;gap:8px}
    .side-links a{padding:10px 11px;border-radius:9px;background:#f4f7fb;color:var(--text-secondary);font-size:13px;transition:.2s}
    .side-links a:hover,.side-links a.active{background:#e4f0fe;color:var(--primary)}
    .notice{margin-top:16px;padding:14px;border-left:3px solid var(--success);background:#f0f8f5;color:var(--text-secondary);font-size:12px;border-radius:8px}
    .pagination{display:flex;gap:8px;justify-content:center;margin-top:28px}
    .page-num{width:38px;height:38px;border:1px solid var(--border);background:#fff;border-radius:10px;display:grid;place-items:center;color:var(--text-secondary);font-size:13px}
    .page-num:hover,.page-num.active{color:#fff;background:var(--primary);border-color:var(--primary)}
    .faq-list{display:grid;gap:10px;max-width:850px}
    .faq-list details{background:#fff;border:1px solid var(--border);border-radius:15px;padding:0 20px}
    .faq-list details[open]{border-color:#acd0f3;background:#fbfdff}
    .faq-list summary{cursor:pointer;list-style:none;padding:18px 30px 18px 0;font-weight:700;position:relative}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--primary);font-size:20px}
    .faq-list details[open] summary:after{content:"－"}
    .faq-answer{padding:0 0 18px;color:var(--text-secondary);font-size:14px}
    .cta{padding:62px 0;background:#163b68;color:#fff}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 9px;font-size:clamp(27px,4vw,42px);line-height:1.2}
    .cta p{margin:0;color:#c7d9ed}
    .cta .btn-primary{background:#fff;color:#165da9}
    .cta .btn-primary:hover{background:#e9f3ff}
    .site-footer{background:#102d50;color:#c8d7e8;padding:42px 0 23px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:30px}
    .footer-brand{color:#fff;font-size:20px;font-weight:800;margin-bottom:8px}
    .footer-copy{font-size:13px;color:#a9bfd6;max-width:330px;margin:0}
    .footer-title{font-size:13px;color:#fff;font-weight:700;margin-bottom:11px}
    .footer-links{display:grid;gap:7px;font-size:13px}
    .footer-links a{transition:.2s}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(205,225,245,.16);padding-top:18px;font-size:12px;color:#9eb5cc;display:flex;justify-content:space-between;gap:20px}
    .tag.footer-tag{margin-left:8px;background:rgba(255,255,255,.12);color:#dcecff}
    .empty-state{display:none;text-align:center;background:#fff;border:1px dashed #b9ccdf;border-radius:18px;padding:35px;color:var(--text-secondary)}
    .top-btn{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border:1px solid var(--border);background:#fff;color:var(--primary);border-radius:12px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;z-index:20}
    .top-btn.show{opacity:1;pointer-events:auto}
    @media(max-width:900px){.steps{overflow-x:auto;max-width:62vw}.step{padding-inline:10px}.feature{grid-template-columns:1fr}.browse-layout{grid-template-columns:1fr}.side-card{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:640px){.container{width:min(100% - 28px,1180px)}.nav-wrap{min-height:68px}.brand{font-size:14px}.brand-mark{width:29px;height:29px}.steps{display:none}.menu-btn{display:block}.page-hero{padding:52px 0 42px}.page-hero h1{font-size:38px}.section{padding:58px 0}.content-card{grid-template-columns:92px minmax(0,1fr);gap:13px}.thumb{height:92px}.content-card .btn{grid-column:2;justify-self:start}.meta{align-items:flex-start;flex-direction:column;gap:4px}.filter-form{display:grid;grid-template-columns:1fr}.field{width:100%}.cta-box{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr;gap:25px}.footer-bottom{flex-direction:column;gap:7px}.cover{min-height:240px;padding:23px}.cover h3{font-size:25px}}
    @media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{
      --page:#f5f8fc;--surface:#fff;--surface-muted:#edf4fb;--text:#17283d;
      --text-secondary:#617287;--primary:#2476d8;--primary-hover:#155eb5;
      --secondary:#7d91b2;--border:#dce6f1;--success:#2d9278;--focus:#9bc7fa;
      --radius:20px;--shadow:0 16px 42px rgba(30,70,110,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--page);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);backdrop-filter:blur(14px)}
    .nav-wrap{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:32px;height:32px;border-radius:10px;background:var(--primary);position:relative;box-shadow:0 7px 16px rgba(36,118,216,.22)}
    .brand-mark:after{content:"";position:absolute;width:10px;height:10px;border:2px solid #fff;border-radius:50%;left:11px;top:7px}
    .brand-mark:before{content:"";position:absolute;width:14px;height:2px;background:#fff;left:9px;bottom:8px;border-radius:5px}
    .steps{display:flex;align-items:stretch;gap:8px}
    .step{position:relative;display:flex;align-items:center;gap:8px;padding:9px 13px;border-radius:12px;color:var(--text-secondary);font-size:13px;font-weight:700;transition:.2s ease}
    .step:not(:last-child):after{content:"";position:absolute;right:-8px;width:8px;height:1px;background:var(--border)}
    .step:hover{background:var(--surface-muted);color:var(--primary)}
    .step.active{background:#e8f2ff;color:var(--primary)}
    .step-num{font-size:11px;color:var(--secondary)}
    .step.active .step-num{color:var(--primary)}
    .menu-btn{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 12px;color:var(--text)}
    .hero{padding:72px 0 60px;background:#fff;border-bottom:1px solid var(--border)}
    .hero-grid{display:grid;grid-template-columns:1fr 1.12fr;gap:62px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--primary);border-radius:99px}
    h1{font-size:clamp(40px,6vw,64px);line-height:1.1;letter-spacing:-.06em;margin:18px 0}
    .hero-copy{font-size:17px;color:var(--text-secondary);max-width:570px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:12px;font-weight:700;transition:.22s ease}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 9px 20px rgba(36,118,216,.2)}
    .btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}
    .btn-secondary{background:#fff;border-color:var(--border);color:var(--text)}
    .btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
    .hero-board{background:#f7fbff;border:1px solid #cfe1f4;border-radius:24px;padding:24px;box-shadow:var(--shadow);transform:rotate(1deg)}
    .board-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--border)}
    .board-title{font-size:18px;font-weight:800}
    .status{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--success);font-weight:700}
    .status:before{content:"";width:7px;height:7px;background:var(--success);border-radius:50%}
    .topic-band{display:grid;grid-template-columns:1.1fr .9fr;gap:13px;margin-top:18px}
    .topic-cover{min-height:190px;border-radius:17px;padding:20px;color:#fff;background:linear-gradient(135deg,#2476d8,#6b91c0);display:flex;flex-direction:column;justify-content:flex-end}
    .topic-cover small{opacity:.8}
    .topic-cover strong{font-size:24px;line-height:1.25;margin-top:8px}
    .board-list{display:grid;gap:10px}
    .board-item{background:#fff;border:1px solid var(--border);border-radius:14px;padding:13px}
    .board-item b{display:block;font-size:14px}
    .board-item span{color:var(--text-secondary);font-size:12px}
    .section{padding:92px 0}
    .section-head{max-width:720px;margin-bottom:36px}
    .section-head h2{font-size:clamp(28px,4vw,43px);line-height:1.2;letter-spacing:-.04em;margin:12px 0}
    .section-head p{margin:0;color:var(--text-secondary);font-size:16px}
    .crumbs{font-size:13px;color:var(--text-secondary);margin-bottom:28px}
    .crumbs a:hover{color:var(--primary)}
    .crumbs span{padding:0 8px;color:#a4b4c6}
    .topic-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:20px}
    .topic-card{background:#fff;border:1px solid var(--border);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);transition:.22s ease}
    .topic-card:hover{transform:translateY(-3px);border-color:#acd0f3;box-shadow:0 20px 45px rgba(30,70,110,.13)}
    .topic-art{height:230px;background:linear-gradient(120deg,#1b4f91,#8cb5d9);position:relative;padding:22px;color:#fff}
    .topic-art:after{content:"专题";position:absolute;right:20px;top:20px;border:1px solid rgba(255,255,255,.5);border-radius:99px;padding:4px 10px;font-size:12px}
    .topic-art h3{position:absolute;bottom:20px;left:22px;margin:0;font-size:27px}
    .topic-body{padding:23px}
    .topic-body p{color:var(--text-secondary);margin:12px 0 18px}
    .small-topics{display:grid;gap:14px}
    .small-topic{background:#fff;border:1px solid var(--border);border-radius:17px;padding:20px;transition:.2s}
    .small-topic:hover{border-color:#acd0f3;transform:translateX(3px)}
    .small-topic h3{font-size:18px;margin:10px 0 5px}
    .small-topic p{font-size:13px;color:var(--text-secondary);margin:0}
    .filter-panel{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:16px;background:#fff;border:1px solid var(--border);border-radius:16px;margin-bottom:24px}
    .search-box{display:flex;gap:8px;flex:1;min-width:240px}
    .search-box input{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 13px;background:#fbfdff;color:var(--text)}
    .search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,118,216,.1);outline:0}
    .chips{display:flex;gap:8px;flex-wrap:wrap}
    .filter-chip{border:0;padding:9px 13px;border-radius:10px;background:#f1f6fb;color:var(--text-secondary);font-size:13px;transition:.2s}
    .filter-chip:hover,.filter-chip.selected{background:#dfeeff;color:var(--primary);font-weight:700}
    .topic-stream{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .stream-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px;min-height:235px;display:flex;flex-direction:column;transition:.2s}
    .stream-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#acd0f3}
    .stream-thumb{height:88px;border-radius:13px;background:linear-gradient(135deg,#d7e8f9,#edf3f9);margin-bottom:16px;display:flex;align-items:flex-end;padding:12px;color:#345f88;font-size:13px;font-weight:700}
    .stream-card h3{font-size:17px;line-height:1.4;margin:0 0 7px}
    .stream-card p{font-size:13px;color:var(--text-secondary);margin:0 0 14px}
    .card-meta{display:flex;justify-content:space-between;gap:10px;margin-top:auto;color:var(--text-secondary);font-size:12px}
    .tag{display:inline-flex;align-items:center;border-radius:99px;padding:4px 9px;background:#e8f2ff;color:var(--primary);font-size:12px;font-weight:700;white-space:nowrap}
    .empty-state{display:none;text-align:center;padding:42px 20px;border:1px dashed #b8cde1;border-radius:18px;color:var(--text-secondary);background:#fbfdff}
    .notice{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:25px}
    .notice-card{padding:21px;border-radius:16px;background:#edf5fc;border:1px solid #d7e7f4}
    .notice-card h3{font-size:16px;margin:0 0 6px}
    .notice-card p{margin:0;color:var(--text-secondary);font-size:13px}
    .faq-list{display:grid;gap:10px;max-width:850px}
    .faq-list details{background:#fff;border:1px solid var(--border);border-radius:15px;padding:0 20px}
    .faq-list details[open]{border-color:#acd0f3;background:#fbfdff}
    .faq-list summary{cursor:pointer;list-style:none;padding:19px 30px 19px 0;font-weight:700;position:relative}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--primary);font-size:20px}
    .faq-list details[open] summary:after{content:"－"}
    .faq-answer{padding:0 0 19px;color:var(--text-secondary);font-size:14px}
    .cta{padding:65px 0;background:#163b68;color:#fff}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 10px;font-size:clamp(27px,4vw,42px);line-height:1.2}
    .cta p{margin:0;color:#c7d9ed}
    .cta .btn-primary{background:#fff;color:#165da9}
    .cta .btn-primary:hover{background:#e9f3ff}
    .site-footer{background:#102d50;color:#c8d7e8;padding:48px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:35px}
    .footer-brand{color:#fff;font-size:20px;font-weight:800}
    .footer-title{font-size:13px;color:#fff;font-weight:700;margin-bottom:13px}
    .footer-links{display:grid;gap:8px;font-size:13px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#91aac4}
    .tagline{display:inline-flex;margin-left:8px;padding:3px 8px;border-radius:99px;background:rgba(255,255,255,.1);color:#dceaf7}
    .backtop{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--primary);box-shadow:var(--shadow);font-weight:800}
    @media(max-width:900px){
      .hero-grid,.topic-layout{grid-template-columns:1fr}
      .topic-layout{gap:18px}
      .topic-stream{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,620px)}
      .nav-wrap{min-height:68px}
      .menu-btn{display:block}
      .steps{display:none;position:absolute;left:14px;right:14px;top:68px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column}
      .steps.open{display:flex}
      .step:not(:last-child):after{display:none}
      .hero{padding:52px 0}
      .hero-grid{gap:34px}
      h1{font-size:42px}
      .hero-board{transform:none}
      .section{padding:68px 0}
      .notice,.footer-grid{grid-template-columns:1fr}
      .cta-box{display:block}
      .cta .btn{margin-top:22px}
    }
    @media(max-width:520px){
      .topic-stream{grid-template-columns:1fr}
      .topic-band{grid-template-columns:1fr}
      .topic-cover{min-height:160px}
      .search-box{min-width:100%}
      .filter-panel{align-items:stretch}
      .chips{overflow-x:auto;flex-wrap:nowrap;padding-bottom:3px}
      .filter-chip{flex:0 0 auto}
      .hero-actions .btn{width:100%}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
    }