/* roulang page: index */
:root{
      --primary:#2563EB;
      --primary-dark:#1D4ED8;
      --primary-soft:#EAF2FF;
      --accent:#06B6D4;
      --signal:#7C3AED;
      --text:#0F172A;
      --muted:#64748B;
      --weak:#F8FBFF;
      --card:#FFFFFF;
      --border:#E2E8F0;
      --border-strong:rgba(37,99,235,.22);
      --success:#10B981;
      --shadow:0 18px 45px rgba(15,23,42,.08);
      --shadow-hover:0 24px 60px rgba(37,99,235,.14);
      --radius-xl:22px;
      --radius-2xl:28px;
      --radius-3xl:34px;
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 8% 4%, rgba(37,99,235,.12), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(6,182,212,.12), transparent 32%),
        linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 42%,#F7FAFC 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(37,99,235,.16)}
    .site-container{width:min(100% - 40px, 1240px);margin-inline:auto}
    .nav-shell{
      position:sticky;top:0;z-index:50;
      border-bottom:1px solid rgba(226,232,240,.86);
      background:rgba(255,255,255,.82);
      backdrop-filter:blur(18px);
      box-shadow:0 8px 24px rgba(15,23,42,.04);
    }
    .brand-mark{
      width:44px;height:44px;border-radius:16px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      color:white;font-weight:900;letter-spacing:-.04em;
      box-shadow:0 12px 28px rgba(37,99,235,.25);
      position:relative;overflow:hidden;
    }
    .brand-mark:after{
      content:"";position:absolute;inset:auto -10px -15px auto;width:34px;height:34px;
      border-radius:999px;background:rgba(255,255,255,.22);
    }
    .nav-link{
      display:inline-flex;align-items:center;gap:.45rem;
      padding:.65rem .95rem;border-radius:999px;
      color:#334155;font-size:14px;font-weight:700;
      transition:.22s ease;
      white-space:nowrap;
    }
    .nav-link:hover{background:#EFF6FF;color:var(--primary);transform:translateY(-1px)}
    .nav-link.active{background:var(--primary-soft);color:var(--primary)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
      min-height:46px;padding:.78rem 1.18rem;border-radius:999px;
      font-weight:800;line-height:1;border:1px solid transparent;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
      cursor:pointer;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--primary),#2F6BFF);
      color:#fff;box-shadow:0 14px 30px rgba(37,99,235,.25);
    }
    .btn-primary:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));transform:translateY(-2px);box-shadow:0 20px 42px rgba(37,99,235,.30)}
    .btn-primary:focus{outline:none;box-shadow:0 0 0 5px rgba(37,99,235,.14),0 20px 42px rgba(37,99,235,.25)}
    .btn-secondary{
      background:rgba(255,255,255,.86);color:#1E40AF;border-color:rgba(37,99,235,.20);
      box-shadow:0 10px 26px rgba(15,23,42,.05);
    }
    .btn-secondary:hover{background:#EFF6FF;border-color:rgba(37,99,235,.38);transform:translateY(-2px)}
    .btn:active{transform:translateY(0) scale(.99)}
    .badge{
      display:inline-flex;align-items:center;gap:.45rem;
      padding:.42rem .72rem;border-radius:999px;
      background:#ECFEFF;color:#155E75;border:1px solid rgba(6,182,212,.18);
      font-size:13px;font-weight:800;line-height:1.2;
    }
    .badge-dot{width:8px;height:8px;border-radius:999px;background:var(--success);box-shadow:0 0 0 5px rgba(16,185,129,.13)}
    .section{padding:88px 0}
    .section-title{font-size:clamp(2rem,4vw,2.8rem);line-height:1.18;font-weight:900;letter-spacing:-.04em;color:var(--text)}
    .section-kicker{color:var(--primary);font-weight:900;font-size:14px;letter-spacing:.08em}
    .section-desc{color:var(--muted);font-size:17px;line-height:1.85}
    .grid-bg{
      position:relative;
      background-image:
        linear-gradient(rgba(37,99,235,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,.06) 1px, transparent 1px);
      background-size:28px 28px;
    }
    .grid-bg:before{
      content:"";position:absolute;inset:0;
      background:linear-gradient(180deg,rgba(248,251,255,.66),rgba(255,255,255,.92));
      pointer-events:none;
    }
    .hero{position:relative;padding:72px 0 40px;overflow:hidden}
    .hero>*{position:relative;z-index:1}
    .hero-title{
      font-size:clamp(2.45rem,6vw,4rem);
      line-height:1.08;font-weight:900;letter-spacing:-.055em;
    }
    .gradient-word{
      color:var(--primary);
      background:linear-gradient(135deg,var(--primary),var(--accent));
      -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
    }
    .metric-strip{
      display:grid;grid-template-columns:repeat(4,1fr);gap:12px;
      margin-top:32px;
    }
    .metric-pill{
      background:rgba(255,255,255,.75);
      border:1px solid rgba(226,232,240,.88);
      border-radius:18px;padding:14px 16px;
      box-shadow:0 10px 26px rgba(15,23,42,.04);
    }
    .metric-pill strong{display:block;font-size:15px;line-height:1.25}
    .metric-pill span{font-size:12px;color:var(--muted)}
    .preview-card{
      border:1px solid rgba(148,163,184,.22);
      background:rgba(255,255,255,.92);
      border-radius:34px;box-shadow:var(--shadow);
      padding:18px;position:relative;overflow:hidden;
    }
    .preview-card:before{
      content:"";position:absolute;inset:-80px -80px auto auto;width:220px;height:220px;border-radius:999px;
      background:radial-gradient(circle,rgba(6,182,212,.18),transparent 70%);
    }
    .window-dots span{width:10px;height:10px;border-radius:999px;display:inline-block}
    .panel-img{
      height:270px;border-radius:24px;object-fit:cover;width:100%;
      border:1px solid rgba(226,232,240,.8);
      background:linear-gradient(135deg,#EFF6FF,#ECFEFF);
    }
    .float-card{
      position:absolute;background:white;border:1px solid rgba(226,232,240,.9);
      border-radius:18px;padding:13px 15px;box-shadow:0 16px 38px rgba(15,23,42,.12);
      font-weight:800;font-size:14px;
    }
    .float-a{left:2px;bottom:86px}
    .float-b{right:12px;bottom:30px}
    .card{
      background:var(--card);border:1px solid rgba(148,163,184,.22);
      border-radius:var(--radius-2xl);box-shadow:var(--shadow);
      transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease, background .25s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(37,99,235,.26)}
    .diagnosis-line{height:5px;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.82}
    .timeline-panel{
      position:relative;
    }
    .timeline-panel:before{
      content:"";position:absolute;left:30px;top:34px;bottom:34px;width:2px;background:linear-gradient(180deg,rgba(37,99,235,.22),rgba(6,182,212,.22));
    }
    .timeline-item{position:relative;padding-left:78px}
    .timeline-num{
      position:absolute;left:0;top:0;width:62px;height:62px;border-radius:22px;
      display:grid;place-items:center;background:#fff;color:var(--primary);font-weight:900;
      border:1px solid rgba(37,99,235,.18);box-shadow:0 12px 24px rgba(37,99,235,.10);
    }
    .step-nav{
      background:#fff;border:1px solid rgba(148,163,184,.22);
      border-radius:28px;padding:14px;box-shadow:var(--shadow);
    }
    .step-chip{
      width:100%;text-align:left;padding:16px 18px;border-radius:20px;
      color:#475569;font-weight:800;display:flex;align-items:center;justify-content:space-between;
      transition:.22s ease;
    }
    .step-chip.active,.step-chip:hover{background:#EFF6FF;color:var(--primary)}
    .status-tag{
      display:inline-flex;align-items:center;padding:.35rem .6rem;border-radius:999px;
      background:#F5F3FF;color:#5B21B6;font-size:12px;font-weight:900;
      border:1px solid rgba(124,58,237,.16);
    }
    .bento{
      display:grid;grid-template-columns:1.2fr .8fr;gap:18px;
    }
    .bento-small{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .resource-row{
      display:flex;gap:16px;align-items:flex-start;padding:18px;border-radius:22px;
      background:rgba(255,255,255,.82);border:1px solid rgba(226,232,240,.88);
      transition:.22s ease;
    }
    .resource-row:hover{background:#fff;border-color:rgba(37,99,235,.24);transform:translateX(3px)}
    .link-arrow{display:inline-flex;align-items:center;gap:.45rem;color:var(--primary);font-weight:900;transition:.2s ease}
    .link-arrow:hover{gap:.72rem}
    .quote-mark{font-size:56px;line-height:1;color:rgba(37,99,235,.16);font-weight:900}
    .faq-item{
      border:1px solid rgba(226,232,240,.92);background:#fff;border-radius:22px;overflow:hidden;
      box-shadow:0 10px 26px rgba(15,23,42,.04);
    }
    .faq-q{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
      padding:20px 22px;text-align:left;font-weight:900;color:var(--text);cursor:pointer;
    }
    .faq-q:focus{outline:none;background:#EFF6FF}
    .faq-a{display:none;padding:0 22px 22px;color:var(--muted);line-height:1.85}
    .faq-item.open .faq-a{display:block}
    .faq-icon{width:28px;height:28px;border-radius:999px;background:#EFF6FF;color:var(--primary);display:grid;place-items:center;flex:0 0 auto;transition:.2s ease}
    .faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
    .cta-card{
      position:relative;overflow:hidden;border-radius:36px;
      background:
        linear-gradient(90deg,rgba(234,242,255,.96),rgba(236,254,255,.90)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border:1px solid rgba(37,99,235,.16);
      box-shadow:var(--shadow);
    }
    .cta-card:after{
      content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.88),rgba(255,255,255,.58));
      pointer-events:none;
    }
    .cta-card>*{position:relative;z-index:1}
    .footer{
      background:linear-gradient(180deg,#F8FBFF,#EEF6FF);
      border-top:1px solid rgba(226,232,240,.9);
    }
    .footer-link{color:#475569;font-weight:700;transition:.2s ease}
    .footer-link:hover{color:var(--primary)}
    .mobile-menu{display:none}
    @media (max-width:1024px){
      .desktop-nav{display:none}
      .mobile-menu{display:flex}
      .hero{padding-top:52px}
      .metric-strip{grid-template-columns:repeat(2,1fr)}
      .bento{grid-template-columns:1fr}
      .float-a,.float-b{position:static;margin-top:12px}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 28px, 1240px)}
      .section{padding:64px 0}
      .hero-title{font-size:clamp(2.15rem,11vw,3rem)}
      .metric-strip{grid-template-columns:1fr}
      .timeline-panel:before{left:24px}
      .timeline-item{padding-left:64px}
      .timeline-num{width:50px;height:50px;border-radius:18px}
      .bento-small{grid-template-columns:1fr}
      .panel-img{height:220px}
      .btn{width:100%}
      .nav-cta{width:auto;min-height:40px;padding:.65rem .86rem;font-size:13px}
    }
    @media (max-width:520px){
      .brand-mark{width:40px;height:40px;border-radius:14px}
      .brand-sub{display:none}
      .hero{padding-top:42px}
      .section-title{font-size:2rem}
      .preview-card{border-radius:26px;padding:12px}
      .cta-card{border-radius:28px}
    }

/* roulang page: category1 */
:root{
      --primary:#2563EB;
      --primary-dark:#1D4ED8;
      --primary-soft:#EFF6FF;
      --accent:#06B6D4;
      --signal:#7C3AED;
      --success:#10B981;
      --text:#0F172A;
      --muted:#64748B;
      --weak:#F8FBFF;
      --border:#E2E8F0;
      --card:#FFFFFF;
      --radius-xl:24px;
      --radius-2xl:30px;
      --shadow-soft:0 18px 45px rgba(15,23,42,.08);
      --shadow-hover:0 28px 70px rgba(37,99,235,.15);
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(37,99,235,.12), transparent 32%),
        radial-gradient(circle at 86% 12%, rgba(6,182,212,.12), transparent 34%),
        linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 42%,#F8FBFF 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(37,99,235,.16)}
    .site-container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
    .nav-shell{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.84);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(226,232,240,.78);
      box-shadow:0 10px 28px rgba(15,23,42,.04);
    }
    .brand-mark{
      width:44px;
      height:44px;
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:15px;
      color:#fff;
      font-weight:900;
      letter-spacing:-.05em;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 14px 30px rgba(37,99,235,.25);
      position:relative;
      overflow:hidden;
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:7px -12px auto auto;
      width:28px;
      height:28px;
      border-radius:999px;
      background:rgba(255,255,255,.22);
    }
    .brand-sub{letter-spacing:.01em}
    .desktop-nav{display:flex}
    .nav-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      min-height:40px;
      padding:9px 15px;
      border-radius:999px;
      color:#475569;
      font-weight:800;
      font-size:14px;
      transition:all .22s ease;
      white-space:nowrap;
    }
    .nav-link:hover{
      color:var(--primary);
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .nav-link.active{
      color:var(--primary);
      background:#EAF2FF;
      box-shadow:inset 0 0 0 1px rgba(37,99,235,.12);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.45rem;
      border-radius:999px;
      min-height:44px;
      padding:0 18px;
      font-weight:900;
      font-size:14px;
      border:1px solid transparent;
      cursor:pointer;
      transition:transform .22s ease, box-shadow .22s ease, background-color .22s ease, border-color .22s ease, color .22s ease;
      white-space:nowrap;
    }
    .btn:focus-visible,.nav-link:focus-visible,.footer-link:focus-visible,.card-link:focus-visible{
      outline:none;
      box-shadow:0 0 0 4px rgba(37,99,235,.16);
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),#2F6BFF);
      box-shadow:0 14px 26px rgba(37,99,235,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);background:linear-gradient(135deg,var(--primary-dark),var(--primary));box-shadow:0 18px 34px rgba(37,99,235,.30)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{
      color:#1E3A8A;
      background:#fff;
      border-color:rgba(37,99,235,.18);
      box-shadow:0 10px 25px rgba(15,23,42,.05);
    }
    .btn-secondary:hover{background:#EFF6FF;border-color:rgba(37,99,235,.34);transform:translateY(-1px)}
    .mobile-menu{display:none}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      border:1px solid rgba(37,99,235,.12);
      background:#EFF6FF;
      color:#1E3A8A;
      min-height:30px;
      padding:5px 11px;
      border-radius:999px;
      font-size:12px;
      font-weight:900;
      line-height:1.2;
    }
    .badge-dot{
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--success);
      box-shadow:0 0 0 5px rgba(16,185,129,.12);
      animation:pulse-dot 1.9s ease-in-out infinite;
    }
    @keyframes pulse-dot{0%,100%{transform:scale(.92);opacity:.72}50%{transform:scale(1.12);opacity:1}}
    .section{padding:88px 0}
    .section-tight{padding:64px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 13px;
      border-radius:999px;
      border:1px solid rgba(6,182,212,.22);
      background:rgba(236,254,255,.72);
      color:#0E7490;
      font-size:13px;
      font-weight:900;
    }
    .hero-category{
      position:relative;
      padding:84px 0 56px;
      overflow:hidden;
    }
    .hero-category:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(rgba(248,251,255,.84),rgba(248,251,255,.94)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      z-index:-2;
    }
    .hero-category:after{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(37,99,235,.07) 1px,transparent 1px),
        linear-gradient(90deg,rgba(37,99,235,.07) 1px,transparent 1px);
      background-size:34px 34px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 80%);
      z-index:-1;
    }
    .hero-title{
      margin:18px auto 0;
      max-width:880px;
      font-weight:900;
      letter-spacing:-.055em;
      line-height:1.08;
      font-size:clamp(2.25rem,6vw,4rem);
    }
    .gradient-text{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
    .hero-desc{
      max-width:780px;
      margin:22px auto 0;
      color:#475569;
      font-size:clamp(1rem,2vw,1.18rem);
      line-height:1.85;
    }
    .tag-cloud{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:30px}
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      background:#fff;
      border:1px solid rgba(148,163,184,.24);
      color:#334155;
      padding:10px 14px;
      font-size:14px;
      font-weight:850;
      box-shadow:0 12px 28px rgba(15,23,42,.04);
    }
    .tag:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--accent);
    }
    .intro-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:26px;align-items:stretch}
    .panel,.content-card,.faq-item,.cta-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(148,163,184,.22);
      border-radius:var(--radius-2xl);
      box-shadow:var(--shadow-soft);
    }
    .panel{padding:30px}
    .panel-title{font-size:clamp(1.55rem,3vw,2.4rem);line-height:1.18;font-weight:900;letter-spacing:-.035em}
    .panel p{color:#64748B}
    .toc-list{display:grid;gap:12px;margin-top:18px}
    .toc-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:14px 15px;
      border-radius:18px;
      background:#F8FBFF;
      border:1px solid rgba(226,232,240,.9);
      color:#334155;
      font-weight:900;
      transition:all .22s ease;
    }
    .toc-link:hover{background:#EFF6FF;color:var(--primary);border-color:rgba(37,99,235,.22);transform:translateX(3px)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:32px}
    .section-kicker{color:var(--primary);font-size:13px;font-weight:950;letter-spacing:.08em}
    .section-title{margin-top:8px;font-size:clamp(1.85rem,4vw,2.75rem);line-height:1.16;font-weight:950;letter-spacing:-.045em}
    .section-desc{max-width:620px;color:#64748B;font-size:16px}
    .bento-grid{display:grid;grid-template-columns:1.1fr .9fr;grid-auto-rows:minmax(180px,auto);gap:18px}
    .content-card{
      padding:24px;
      position:relative;
      overflow:hidden;
      transition:all .25s ease;
    }
    .content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(37,99,235,.25)}
    .content-card.large{grid-row:span 2;min-height:384px}
    .content-card.with-image{padding:0}
    .card-image{
      height:190px;
      background:linear-gradient(135deg,#EFF6FF,#ECFEFF);
      overflow:hidden;
    }
    .card-image img{width:100%;height:100%;object-fit:cover}
    .card-body{padding:24px}
    .card-label{
      display:inline-flex;
      align-items:center;
      padding:5px 10px;
      border-radius:999px;
      background:rgba(37,99,235,.09);
      color:#1D4ED8;
      font-size:12px;
      font-weight:950;
      margin-bottom:14px;
    }
    .content-card h3{font-size:1.22rem;line-height:1.35;font-weight:950;letter-spacing:-.02em}
    .content-card p{margin-top:10px;color:#64748B;line-height:1.75}
    .card-link{
      margin-top:18px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-weight:950;
      transition:gap .22s ease,color .22s ease;
    }
    .card-link:hover{gap:12px;color:var(--primary-dark)}
    .architecture-card{
      position:relative;
      overflow:hidden;
      padding:34px;
      border-radius:var(--radius-2xl);
      background:
        linear-gradient(135deg,rgba(239,246,255,.96),rgba(236,254,255,.74)),
        #fff;
      border:1px solid rgba(37,99,235,.13);
      box-shadow:var(--shadow-soft);
    }
    .architecture-card:after{
      content:"";
      position:absolute;
      right:-70px;
      top:-70px;
      width:210px;
      height:210px;
      border-radius:999px;
      background:radial-gradient(circle,rgba(124,58,237,.16),transparent 65%);
    }
    .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:30px;position:relative;z-index:1}
    .step{
      background:#fff;
      border:1px solid rgba(148,163,184,.24);
      border-radius:22px;
      padding:20px;
      min-height:178px;
      transition:all .24s ease;
    }
    .step:hover{transform:translateY(-3px);box-shadow:0 18px 42px rgba(37,99,235,.12);border-color:rgba(37,99,235,.24)}
    .step-num{
      width:34px;
      height:34px;
      border-radius:12px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      font-weight:950;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      margin-bottom:14px;
    }
    .step h3{font-weight:950;line-height:1.35}
    .step p{margin-top:8px;color:#64748B;font-size:14px;line-height:1.7}
    .scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .scenario{
      border-radius:var(--radius-2xl);
      border:1px solid rgba(148,163,184,.22);
      background:#fff;
      padding:26px;
      box-shadow:0 14px 36px rgba(15,23,42,.055);
      transition:all .24s ease;
    }
    .scenario:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(37,99,235,.22)}
    .scenario-icon{
      width:46px;
      height:46px;
      border-radius:16px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:#EFF6FF;
      color:var(--primary);
      font-weight:950;
      margin-bottom:16px;
    }
    .scenario h3{font-size:1.12rem;font-weight:950}
    .scenario p{margin-top:10px;color:#64748B}
    .quote-panel{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:26px;
      align-items:center;
      padding:22px;
      border-radius:var(--radius-2xl);
      background:#fff;
      border:1px solid rgba(148,163,184,.22);
      box-shadow:var(--shadow-soft);
    }
    .quote-image{
      min-height:360px;
      border-radius:26px;
      overflow:hidden;
      background:linear-gradient(135deg,#EFF6FF,#ECFEFF);
    }
    .quote-image img{width:100%;height:100%;object-fit:cover}
    .quote-list{display:grid;gap:14px}
    .quote{
      padding:18px;
      border-radius:22px;
      background:#F8FBFF;
      border:1px solid rgba(226,232,240,.9);
    }
    .quote strong{display:block;font-weight:950;color:#0F172A}
    .quote p{margin-top:6px;color:#64748B}
    .faq-wrap{display:grid;gap:14px}
    .faq-item{overflow:hidden}
    .faq-question{
      width:100%;
      padding:20px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      background:#fff;
      border:0;
      text-align:left;
      color:#0F172A;
      font-weight:950;
      cursor:pointer;
    }
    .faq-question span:first-child{font-size:1rem}
    .faq-toggle{
      width:28px;
      height:28px;
      border-radius:999px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:var(--primary);
      background:#EFF6FF;
      flex:0 0 auto;
      transition:transform .22s ease,background .22s ease;
    }
    .faq-answer{
      display:none;
      padding:0 22px 22px;
      color:#64748B;
      line-height:1.85;
    }
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-toggle{transform:rotate(45deg);background:#DBEAFE}
    .cta-card{
      position:relative;
      overflow:hidden;
      padding:42px;
      background:
        linear-gradient(135deg,rgba(37,99,235,.09),rgba(6,182,212,.10)),
        #fff;
    }
    .cta-card:before{
      content:"";
      position:absolute;
      inset:0;
      background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      opacity:.08;
      z-index:0;
    }
    .cta-card>*{position:relative;z-index:1}
    .cta-title{font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.16;font-weight:950;letter-spacing:-.045em}
    .footer{
      background:linear-gradient(180deg,#F8FBFF,#EEF6FF);
      border-top:1px solid rgba(226,232,240,.84);
    }
    .footer-link{
      color:#64748B;
      font-weight:800;
      transition:all .2s ease;
    }
    .footer-link:hover{color:var(--primary);transform:translateX(2px)}
    @media (max-width:1024px){
      .desktop-nav{display:none!important}
      .mobile-menu{display:inline-flex}
      .intro-grid,.quote-panel{grid-template-columns:1fr}
      .bento-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:repeat(2,1fr)}
      .scenario-grid{grid-template-columns:1fr 1fr}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 28px,1180px)}
      .section{padding:64px 0}
      .section-tight{padding:48px 0}
      .hero-category{padding:64px 0 42px}
      .nav-cta{min-height:40px;padding:0 13px;font-size:13px}
      .brand-mark{width:40px;height:40px;border-radius:14px}
      .brand-sub{display:none!important}
      .panel,.architecture-card,.cta-card{padding:24px}
      .steps,.scenario-grid{grid-template-columns:1fr}
      .content-card.large{min-height:auto}
      .quote-image{min-height:260px}
    }
    @media (max-width:520px){
      .hero-title{letter-spacing:-.045em}
      .tag-cloud{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
      .tag{flex:0 0 auto}
      .btn{width:100%}
      .nav-shell .btn{width:auto}
      .cta-actions{flex-direction:column}
      .faq-question{padding:18px}
      .faq-answer{padding:0 18px 18px}
    }