:root{
      --bg:#f4fbf7;
      --bg-2:#ffffff;
      --card:#ffffff;
      --card-2:#edf8f2;
      --line:#d9eadf;
      --text:#173126;
      --muted:#577063;
      --brand:#2ea46f;
      --brand-2:#6fe0a4;
      --accent:#f4b968;
      --shadow:0 16px 36px rgba(24, 71, 48, .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;background:linear-gradient(180deg,#f8fdf9 0%,#f2faf5 38%,#ffffff 100%);color:var(--text);line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:40;background:rgba(248,253,249,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(217,234,223,.75)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line);box-shadow:0 8px 18px rgba(23,49,38,.06)}
    .brand h2{margin:0;font-size:1rem;line-height:1.2}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:.88rem}
    .menu{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:6px}
    .menu a,.menu button{padding:9px 12px;border-radius:999px;border:1px solid transparent;background:transparent;color:var(--text);font-size:.92rem;cursor:pointer;transition:.2s ease}
    .menu a:hover,.menu button:hover{background:#eaf8ef;border-color:var(--line);transform:translateY(-1px)}
    .menu .primary{background:linear-gradient(135deg,var(--brand),#1f8f5e);color:#fff;box-shadow:0 10px 22px rgba(46,164,111,.24)}
    .menu .primary:hover{background:linear-gradient(135deg,#279960,#187a50)}
    .mobile-toggle{display:none}
    .hero{padding:34px 0 16px}
    .hero-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-main{background:
      radial-gradient(circle at 20% 20%, rgba(111,224,164,.24), transparent 22%),
      radial-gradient(circle at 85% 10%, rgba(244,185,104,.18), transparent 18%),
      linear-gradient(135deg,#ffffff 0%,#f2fbf6 100%);
      border:1px solid var(--line);border-radius:28px;padding:32px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-main::after{content:"";position:absolute;inset:auto -60px -80px auto;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle, rgba(46,164,111,.14), transparent 65%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#e8f8ef;border:1px solid #cde9d8;color:#1d6e49;font-size:.88rem;font-weight:600}
    h1{margin:14px 0 12px;font-size:clamp(2rem,4vw,3.55rem);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:1.04rem;max-width:58ch}
    .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:13px 18px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font-weight:700;box-shadow:0 10px 20px rgba(23,49,38,.05);transition:.2s ease}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(23,49,38,.09)}
    .btn.brand{background:linear-gradient(135deg,var(--brand),#1f8f5e);color:#fff;border-color:transparent}
    .btn.soft{background:#eef9f2}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini-stat{background:rgba(255,255,255,.72);border:1px solid rgba(217,234,223,.9);border-radius:18px;padding:14px}
    .mini-stat b{display:block;font-size:1.2rem;margin-bottom:4px}
    .mini-stat span{color:var(--muted);font-size:.9rem}
    .hero-side{display:grid;gap:14px}
    .side-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 10px;font-size:1.08rem}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#effaf3;border:1px solid #d4eadb;color:#2a6344;font-size:.9rem}
    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:1.6rem}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .grid-4,.grid-3,.grid-2{display:grid;gap:14px}
    .grid-4{grid-template-columns:repeat(4,1fr)}
    .grid-3{grid-template-columns:repeat(3,1fr)}
    .grid-2{grid-template-columns:repeat(2,1fr)}
    .card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow);transition:.2s ease}
    .card:hover{transform:translateY(-3px)}
    .metric b{font-size:1.8rem;display:block;margin-bottom:4px}
    .metric span{color:var(--muted)}
    .service{background:linear-gradient(180deg,#fff 0%,#f5fbf7 100%)}
    .service h3{margin:0 0 8px;font-size:1.06rem}
    .service p{margin:0;color:var(--muted)}
    .process{counter-reset:step}
    .step{position:relative;padding-top:8px}
    .step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;background:#e8f8ef;color:#1d6e49;font-weight:800;margin-bottom:12px}
    .compare{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px}
    th,td{padding:14px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#effaf3;color:#244d39;font-size:.95rem}
    .rating{font-weight:800;color:#1e7a51}
    .review{display:flex;flex-direction:column;gap:10px}
    .review .who{display:flex;align-items:center;justify-content:space-between;gap:12px;font-weight:700}
    .stars{color:#f0a93d;letter-spacing:1px}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .timeline-item b{color:#1b6b49}
    .faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}
    .faq-q{width:100%;text-align:left;background:none;border:0;padding:16px 18px;font-size:1rem;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:16px}
    .faq-a p{margin:0;color:var(--muted)}
    .article-list{display:grid;gap:12px}
    .article{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .article small{color:var(--muted)}
    .form{display:grid;gap:12px}
    .form .row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    input,select,textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid #cfe3d6;background:#fff;color:var(--text);font:inherit;outline:none}
    textarea{min-height:124px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#89d3aa;box-shadow:0 0 0 4px rgba(111,224,164,.16)}
    .submit{border:0;background:linear-gradient(135deg,var(--brand),#1f8f5e);color:#fff;font-weight:800;cursor:pointer}
    .image-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .image-strip .imgbox{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
    .image-strip img{width:100%;height:auto;display:block}
    .floating{position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px}
    .floating a,.floating button{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);cursor:pointer}
    .footer{margin-top:18px;background:#f3fbf6;border-top:1px solid var(--line);color:#234032}
    .footer a{color:#1a6f49}
    .footer-inner{padding:26px 0 20px;display:grid;gap:14px}
    .footer-top{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .footer-note{color:var(--muted);margin:0}
    .kefu{display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center}
    .kefu img{width:140px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .copyright{padding-top:8px;border-top:1px solid rgba(88,112,99,.15);color:#5e7569;font-size:.92rem}
    .scroll-entrance{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
    .scroll-entrance.show{opacity:1;transform:translateY(0)}
    @media (max-width: 1024px){
      .hero-wrap,.footer-top,.grid-4,.grid-3,.grid-2,.image-strip{grid-template-columns:1fr 1fr}
      .grid-4{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 760px){
      .mobile-toggle{display:inline-flex}
      .menu{display:none;flex-direction:column;align-items:stretch;width:100%;padding:10px 0 4px}
      .menu.open{display:flex}
      .nav{flex-wrap:wrap}
      .hero-wrap,.footer-top,.grid-4,.grid-3,.grid-2,.hero-meta,.image-strip,.timeline-item,.form .row,.kefu{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .section-head{align-items:flex-start;flex-direction:column}
      table{min-width:860px}
    }