:root{
      --bg:#f4fbf7;
      --bg2:#ecf8f1;
      --card:#ffffff;
      --line:#d7ebe0;
      --text:#173126;
      --muted:#5c7468;
      --brand:#1ea97a;
      --brand2:#36c28f;
      --accent:#dff7eb;
      --shadow:0 12px 30px rgba(23,49,38,.08);
      --radius:20px;
      --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;background:linear-gradient(180deg,var(--bg) 0%,#fff 48%,var(--bg2) 100%);color:var(--text)}
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:30;background:rgba(244,251,247,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,235,224,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:40px;height:40px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:16px;letter-spacing:.5px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .nav-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px;justify-content:flex-end}
    .nav-links a{padding:8px 10px;border-radius:999px;color:var(--text);font-size:13px}
    .nav-links a:hover,.nav-links a.active{background:var(--accent);color:#0d5f45}
    .hero{padding:34px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.metric,.review,.faq-item,.article-card,.value-card,.step-card,.compare-card,.case-card,.network-card,.price-card,.tag-cloud,.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:30px;position:relative;overflow:hidden}
    .hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:999px;background:radial-gradient(circle,rgba(54,194,143,.18),transparent 65%)}
    .hero-main::before{width:240px;height:240px;right:-90px;top:-70px}
    .hero-main::after{width:180px;height:180px;right:90px;bottom:-90px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;background:var(--accent);color:#0d5f45;border-radius:999px;font-size:13px;font-weight:600}
    h1{margin:18px 0 12px;font-size:clamp(30px,4.8vw,52px);line-height:1.08}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.9;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 10px 24px rgba(30,169,122,.24)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-side{padding:20px;display:grid;gap:14px}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{padding:16px}
    .metric strong{display:block;font-size:24px}
    .metric span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.55}
    .section{padding:18px 0}
    .section h2{margin:0 0 14px;font-size:clamp(22px,3vw,32px)}
    .section-sub{margin:-4px 0 18px;color:var(--muted);line-height:1.8}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .section-card{padding:20px}
    .value-card{padding:18px}
    .value-card h3,.step-card h3,.case-card h3,.article-card h3,.compare-card h3{margin:0 0 10px;font-size:18px}
    .value-card p,.step-card p,.case-card p,.article-card p,.compare-card p,.review p,.faq-item p,.network-card p{margin:0;color:var(--muted);line-height:1.8}
    .pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .pill{padding:7px 10px;border-radius:999px;background:#f3fbf7;border:1px solid var(--line);font-size:12px;color:#25624a}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step-card{padding:18px;position:relative}
    .step-card .num{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:12px;background:var(--accent);color:#0d5f45;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf4ef;text-align:left;vertical-align:top}
    th{background:#f5fbf7;color:#1d4a39}
    .rating{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
    .stars{color:#f3a42a;font-size:18px;letter-spacing:2px}
    .reviews,.articles,.faq-list,.cases,.network,.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review,.article-card,.faq-item,.case-card,.network-card,.price-card{padding:18px}
    .review .meta{margin-top:14px;color:#365345;font-size:13px;font-weight:700}
    .faq-item summary{list-style:none;cursor:pointer;font-weight:700;color:var(--text)}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"＋";float:right;color:var(--brand)}
    .faq-item[open] summary::after{content:"－"}
    .faq-item p{padding-top:12px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .form-card{padding:20px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:8px;color:#254b3a}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px;color:var(--text);font:inherit;outline:none}
    textarea{min-height:124px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(30,169,122,.65);box-shadow:0 0 0 4px rgba(30,169,122,.1)}
    .full{grid-column:1/-1}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer{padding:20px 0 32px;color:#274638}
    .footer .container{display:grid;gap:14px}
    .footer-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;align-items:center}
    .floating{position:fixed;right:14px;bottom:14px;z-index:35;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;min-width:48px;height:48px;padding:0 14px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 26px rgba(30,169,122,.26);border:none;font-weight:700}
    .float-panel{position:fixed;right:14px;bottom:74px;width:min(320px,calc(100vw - 28px));background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:14px;display:none;z-index:34}
    .float-panel.open{display:block}
    .float-panel img{border-radius:14px;border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .tag-cloud{padding:18px}
    .tag-cloud .pill{background:#fff}
    .case-card strong,.price-card strong{display:block;margin-bottom:8px}
    .inline-note{display:inline-block;margin-top:10px;font-size:13px;color:#4f6d5f}
    .toc{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .toc a{font-size:13px;padding:8px 10px;border:1px solid var(--line);border-radius:999px;color:#284b3c;background:#fff}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.steps,.reviews,.articles,.faq-list,.cases,.network,.prices{grid-template-columns:1fr 1fr}
      .hero-main{grid-column:1/-1}
      .hero-side{grid-column:1/-1}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 720px){
      .menu-btn{display:inline-flex}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}
      .nav-links.open{display:flex;flex-direction:column;align-items:stretch}
      .nav-links a{padding:12px 14px}
      .hero,.section{padding:14px 0}
      .hero-main{padding:22px}
      .hero-actions,.footer-top{flex-direction:column;align-items:stretch}
      .grid-3,.grid-4,.steps,.reviews,.articles,.faq-list,.cases,.network,.prices{grid-template-columns:1fr}
      h1{font-size:clamp(28px,10vw,40px)}
      .mini-grid{grid-template-columns:1fr 1fr}
    }