:root{
      --bg:#f5f8f4;
      --card:#ffffff;
      --card-2:#eef7ef;
      --line:#d7e6d9;
      --text:#12301f;
      --muted:#5f7265;
      --green:#19c15b;
      --green-2:#0fa94a;
      --accent:#7ae36a;
      --shadow:0 18px 45px rgba(18,48,31,.08);
      --radius:22px;
      --max: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(25,193,91,.10), transparent 32%),
        radial-gradient(circle at top right, rgba(122,227,106,.12), transparent 28%),
        linear-gradient(180deg, #f7fbf7 0%, #f3f8f4 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:30;
      backdrop-filter:blur(12px);
      background:rgba(247,251,247,.82);
      border-bottom:1px solid rgba(215,230,217,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;flex:0 0 auto}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav-links{
      display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center;justify-content:flex-end;
      font-size:14px;color:#244033;
    }
    .nav-links a{padding:8px 0;border-bottom:2px solid transparent}
    .nav-links a:hover{border-bottom-color:var(--green)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;
      transition:.25s ease;box-shadow:none
    }
    .btn-primary{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;box-shadow:0 12px 24px rgba(25,193,91,.22)}
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
    .menu-toggle{display:none}
    .hero{
      padding:34px 0 22px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.table-wrap,.form-card,.review-card,.news-card,.timeline-item{
      background:var(--card);border:1px solid rgba(215,230,217,.9);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{
      padding:34px;
      position:relative;overflow:hidden;
      background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(238,247,239,.92)),
        radial-gradient(circle at right top, rgba(25,193,91,.12), transparent 30%);
    }
    .hero-main:before{
      content:"";position:absolute;inset:auto -30px -60px auto;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(25,193,91,.18), rgba(25,193,91,0) 68%);
    }
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 14px;border-radius:999px;background:#eaf8ee;color:#14743a;
      font-size:13px;font-weight:700;border:1px solid #cce9d2;
    }
    h1{margin:18px 0 14px;font-size:clamp(30px,5vw,50px);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.85;color:var(--muted);max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini{
      padding:14px 16px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .mini strong{display:block;font-size:18px}
    .mini span{display:block;margin-top:4px;color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{padding:22px;background:linear-gradient(180deg,#f7fff8,#edf8ef)}
    .hero-side h2{margin:0 0 12px;font-size:20px}
    .stack{
      display:grid;gap:12px
    }
    .stack .item{
      padding:15px 16px;border-radius:18px;background:rgba(255,255,255,.88);border:1px solid var(--line)
    }
    .stack .item strong{display:block;margin-bottom:6px}
    .stack .item p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
    section{padding:18px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px
    }
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .card{padding:20px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .kpi{
      display:flex;align-items:flex-start;justify-content:space-between;gap:10px
    }
    .kpi strong{font-size:30px;line-height:1}
    .kpi span{font-size:13px;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#244033;font-size:13px
    }
    .service-list,.bullet-list{margin:0;padding-left:18px}
    .service-list li,.bullet-list li{margin:8px 0}
    .panel{padding:20px}
    .steps{counter-reset:step}
    .step{
      display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)
    }
    .step:last-child{border-bottom:none;padding-bottom:0}
    .step .n{
      width:34px;height:34px;border-radius:50%;background:#eaf8ee;color:#11743a;
      display:grid;place-items:center;font-weight:800;flex:0 0 auto
    }
    .step h3{margin:0 0 6px;font-size:17px}
    .compare{width:100%;border-collapse:separate;border-spacing:0}
    .compare th,.compare td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
    .compare th{background:#f3fbf4;position:sticky;top:0}
    .compare tr:last-child td{border-bottom:none}
    .rating{font-size:22px;font-weight:800;color:#0f7e37}
    .table-wrap{overflow:auto}
    details.faq-item{padding:0}
    details.faq-item summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;justify-content:space-between;gap:12px
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    details.faq-item .faq-content{padding:0 20px 18px;color:var(--muted);line-height:1.75}
    .review-card{padding:18px}
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .stars{color:#0f8e3d;font-weight:900;letter-spacing:1px}
    .meta{font-size:13px;color:var(--muted)}
    .timeline{
      display:grid;gap:12px
    }
    .timeline-item{padding:18px}
    .timeline-item strong{display:block;margin-bottom:6px}
    .article-list{display:grid;gap:12px}
    .news-card{padding:18px;display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
    .news-card time{color:#0f7e37;font-weight:700;font-size:13px;white-space:nowrap}
    .form-card{padding:22px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-weight:700;font-size:14px}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text)
    }
    textarea{min-height:130px;resize:vertical}
    .full{grid-column:1/-1}
    .footer{
      margin-top:10px;padding:26px 0 20px;border-top:1px solid rgba(215,230,217,.9);background:#f3f8f4;color:var(--text)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px}
    .footer a{color:#105f32}
    .footer small,.footer p{color:var(--muted)}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      width:52px;height:52px;border-radius:50%;display:grid;place-items:center;border:none;
      background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;box-shadow:0 14px 28px rgba(25,193,91,.25);cursor:pointer
    }
    .fade-in{opacity:0;transform:translateY(14px);transition:.6s ease}
    .fade-in.show{opacity:1;transform:translateY(0)}
    .mobile-only{display:none}
    .top-visual{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:14px}
    .notice{
      padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line);color:var(--muted);font-size:14px
    }
    @media (max-width: 960px){
      .hero-grid,.grid-4,.grid-3,.footer-grid{grid-template-columns:1fr}
      .grid-2,.form-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:76px;background:#fff;padding:14px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav{position:relative}
      .hero-main{padding:24px}
      .hero-points{grid-template-columns:1fr}
      .mobile-only{display:block}
      .section-head{align-items:flex-start;flex-direction:column}
    }