:root{
      --bg:#f6fbfd;
      --bg2:#edf8fb;
      --card:#ffffff;
      --line:#d7e7ee;
      --text:#183043;
      --muted:#5d7281;
      --primary:#0ea5a8;
      --primary2:#2563eb;
      --accent:#14b8a6;
      --shadow:0 16px 40px rgba(15, 51, 71, .08);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:
      radial-gradient(circle at top left, rgba(20,184,166,.12), transparent 30%),
      radial-gradient(circle at right 10%, rgba(37,99,235,.10), transparent 24%),
      linear-gradient(180deg,var(--bg),#fff 40%,var(--bg2));}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    header{position:sticky;top:0;z-index:50;background:rgba(246,251,253,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,231,238,.9)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;padding:4px;box-shadow:0 6px 16px rgba(15,51,71,.08)}
    .brand strong{font-size:18px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#2b4354;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#e8f8f7;color:#0f5d60}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 14px 30px rgba(14,165,168,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(14,165,168,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:44px;height:44px;align-items:center;justify-content:center}
    .menu-toggle span{width:18px;height:2px;background:#295065;position:relative;display:block}
    .menu-toggle span:before,.menu-toggle span:after{content:"";position:absolute;left:0;width:18px;height:2px;background:#295065}
    .menu-toggle span:before{top:-6px}.menu-toggle span:after{top:6px}
    main{overflow:hidden}
    .hero{padding:34px 0 20px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-card,.info-card,.section-card,.quote-card,.form-card,.price-card,.faq-card,.compare-card,.case-card,.article-card{background:rgba(255,255,255,.88);border:1px solid rgba(215,231,238,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:34px;position:relative;overflow:hidden}
    .hero-card:before{content:"";position:absolute;inset:-60px -80px auto auto;width:220px;height:220px;background:radial-gradient(circle, rgba(20,184,166,.22), transparent 65%);border-radius:50%}
    .badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#e8fbfa;color:#0f6c6f;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,4vw,52px);line-height:1.12;margin:16px 0 14px}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:60ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}
    .mini{padding:16px;border-radius:16px;background:linear-gradient(180deg,#fbfeff,#f1fbff);border:1px solid #e0edf3}
    .mini strong{display:block;font-size:18px;margin-bottom:6px}
    .mini span{color:var(--muted);font-size:13px;line-height:1.6}
    .hero-side{display:grid;gap:16px}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .metric{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff,#f4fbfd);border:1px solid #dfebef}
    .metric .num{font-size:30px;font-weight:900;color:#0f6c6f;line-height:1}
    .metric .label{margin-top:10px;font-weight:700}
    .metric .desc{margin-top:6px;color:var(--muted);font-size:13px;line-height:1.6}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{font-size:28px;margin:0}
    .section-head p{margin:0;color:var(--muted);max-width:58ch;line-height:1.7}
    .section-card{padding:24px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card,.step-card,.benefit-card,.review-card,.case-card,.article-card{padding:20px;border-radius:18px;background:#fff;border:1px solid #e3edf1;transition:.25s}
    .service-card:hover,.step-card:hover,.benefit-card:hover,.review-card:hover,.case-card:hover,.article-card:hover{transform:translateY(-4px);box-shadow:0 16px 30px rgba(15,51,71,.08)}
    .service-card h3,.step-card h3,.benefit-card h3,.review-card h3,.case-card h3,.article-card h3{margin:10px 0 8px;font-size:18px}
    .service-card p,.step-card p,.benefit-card p,.review-card p,.case-card p,.article-card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#dffaf6,#e8f0ff);color:#0f6c6f;font-weight:900}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#f0faf9;border:1px solid #d7eeeb;color:#0e6265;font-size:13px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid #e1ebef}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #e9f0f3;font-size:14px;vertical-align:top}
    th{background:#f4fbfc;color:#274557}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f5b50a;font-size:18px;letter-spacing:2px}
    .check{color:#0f8f79;font-weight:700}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline .step-card{position:relative}
    .timeline .step-card:after{content:"";position:absolute;top:24px;right:-10px;width:20px;height:2px;background:linear-gradient(90deg,var(--primary),transparent)}
    .timeline .step-card:last-child:after{display:none}
    .qa{display:grid;gap:12px}
    .qa details{background:#fff;border:1px solid #dfeaf0;border-radius:16px;padding:0 18px;box-shadow:0 10px 26px rgba(15,51,71,.04)}
    .qa summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:700}
    .qa summary::-webkit-details-marker{display:none}
    .qa .answer{padding:0 0 18px;color:var(--muted);line-height:1.8}
    .testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card .meta{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}
    .review-card .role{font-size:13px;color:#0f6c6f;font-weight:700}
    .price-card{padding:22px}
    .price-list{display:grid;gap:12px}
    .price-item{display:flex;justify-content:space-between;gap:14px;padding:14px 0;border-bottom:1px dashed #dce8ee;font-size:14px}
    .price-item strong{color:#12384b}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .form-group{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#29495d}
    input,select,textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid #d8e6ec;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#7edbd5;box-shadow:0 0 0 4px rgba(14,165,168,.10)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .footer-top{padding:24px 0 28px}
    footer{border-top:1px solid #d7e7ee;background:#f4fbfc;color:#244153}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px}
    .footer-grid a{color:#174d6a}
    .footer-grid a:hover{text-decoration:underline}
    .contact-mini{display:grid;gap:10px;font-size:14px;color:var(--muted)}
    .qr{width:120px;border-radius:16px;border:1px solid #d9e6ec}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;border:1px solid #d8e6ec;background:#fff;box-shadow:0 12px 24px rgba(15,51,71,.12);cursor:pointer}
    .floating .primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border:none}
    .scrolltop{display:none}
    .mobile-nav{display:none}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .timeline-wrap{overflow:hidden}
    .badges-inline{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .small-note{font-size:12px;color:var(--muted);line-height:1.7}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .map-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .map-grid .tag{justify-content:center;text-align:center}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.timeline,.testimonial-grid,.article-list,.footer-grid,.split,.map-grid,.metric-grid,.form-grid{grid-template-columns:1fr 1fr}
      .hero-card{padding:26px}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-nav{display:none;padding:0 0 16px}
      .mobile-nav.open{display:block}
      .mobile-nav .panel{background:#fff;border:1px solid #dbe8ee;border-radius:18px;padding:14px;display:grid;gap:10px}
      .mobile-nav a{padding:12px 12px;border-radius:12px;background:#f7fbfc}
      .hero-grid,.grid-3,.grid-4,.timeline,.testimonial-grid,.article-list,.footer-grid,.split,.map-grid,.metric-grid,.form-grid{grid-template-columns:1fr}
      .hero-card,.section-card{padding:20px}
      h1{font-size:32px}
      .mini-grid{grid-template-columns:1fr}
      .floating{right:12px;bottom:12px}
      .scrolltop{display:grid}
    }