:root{
    --navy:#0E1B2A;
    --navy2:#13263b;
    --blue:#1A3A6B;
    --orange:#FF6A00;
    --orange-d:#E85C00;
    --yellow:#FFB400;
    --ink:#1c2430;
    --gray:#5b6675;
    --line:#e7ecf2;
    --bg:#f6f8fb;
    --white:#fff;
    --radius:16px;
    --shadow:0 10px 30px rgba(14,27,42,.08);
    --shadow-lg:0 18px 50px rgba(14,27,42,.14);
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
    color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  .wrap{max-width:1140px;margin:0 auto;padding:0 20px}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:var(--orange);color:#fff;font-weight:700;font-size:16px;
    padding:14px 28px;border-radius:999px;border:none;cursor:pointer;
    transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
    box-shadow:0 8px 20px rgba(255,106,0,.32);
  }
  .btn:hover{background:var(--orange-d);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,0,.4)}
  .btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55);box-shadow:none}
  .btn.ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
  .btn.blue{background:var(--blue);box-shadow:0 8px 20px rgba(26,58,107,.3)}
  .btn.blue:hover{background:#16345f}
  .section{padding:78px 0}
  .section.alt{background:var(--bg)}
  .eyebrow{display:inline-block;color:var(--orange);font-weight:700;font-size:14px;letter-spacing:.5px;margin-bottom:12px}
  .h2{font-size:34px;line-height:1.25;font-weight:800;letter-spacing:-.5px}
  .sub{color:var(--gray);font-size:17px;max-width:640px;margin-top:14px}
  .center{text-align:center}
  .center .sub{margin-left:auto;margin-right:auto}

  /* Header */
  header{position:sticky;top:0;z-index:50;background:rgba(14,27,42,.96);backdrop-filter:blur(8px);color:#fff}
  .nav{display:flex;align-items:center;justify-content:space-between;height:68px}
  .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}
  .logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--orange),var(--yellow));display:flex;align-items:center;justify-content:center;font-size:18px}
  .nav-links{display:flex;gap:28px;font-size:15px;color:rgba(255,255,255,.82)}
  .nav-links a:hover{color:#fff}
  .nav .btn{padding:10px 20px;font-size:14px}
  @media(max-width:860px){.nav-links{display:none}}

  /* Hero */
  .hero{position:relative;background:radial-gradient(1200px 600px at 80% -10%,#1d3a63 0%,var(--navy) 55%);color:#fff;overflow:hidden}
  .hero:before{content:"";position:absolute;inset:0;background:
    radial-gradient(600px 300px at 10% 90%,rgba(255,106,0,.18),transparent 60%),
    radial-gradient(500px 280px at 95% 70%,rgba(255,180,0,.12),transparent 60%);}
  .hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:64px 0 72px}
  @media(max-width:920px){.hero-grid{grid-template-columns:1fr;gap:36px}}
  .hero h1{font-size:44px;line-height:1.18;font-weight:900;letter-spacing:-1px}
  .hero h1 .hl{color:var(--orange);background:linear-gradient(180deg,transparent 62%,rgba(255,180,0,.35) 0)}
  .hero p.lead{margin-top:18px;font-size:18px;color:rgba(255,255,255,.86);max-width:520px}
  .hero-cta{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap}
  .hero-stats{margin-top:34px;display:flex;gap:30px;flex-wrap:wrap}
  .hero-stats .s b{display:block;font-size:26px;font-weight:900;color:var(--yellow)}
  .hero-stats .s span{font-size:13px;color:rgba(255,255,255,.7)}

  /* Lead form card */
  .lead-card{background:#fff;color:var(--ink);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-lg);text-align:center}
  .lead-card h3{font-size:20px;font-weight:800}
  .lead-card .tag{display:inline-block;background:#fff3e8;color:var(--orange-d);font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px}
  .lead-card .hero-qr-wrap{display:flex;justify-content:center;margin:18px 0 14px}
  .lead-card .hero-qr{width:180px;height:180px;border:1px solid var(--line);border-radius:10px;background:#fff}
  .lead-card .qr-ph{font-size:13px;color:var(--gray);text-align:center;margin:18px 0}
  .lead-card .wxid{text-align:center;font-size:14px;color:var(--ink);margin-bottom:14px}
  .lead-card .wxid span{font-weight:800;color:var(--orange-d)}
  .lead-card .btn{width:100%;margin-top:0}
  .lead-card .privacy{margin-top:12px;font-size:12px;color:var(--gray);text-align:center}

  /* Trust bar */
  .trust{background:var(--navy2);color:#fff}
  .trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:30px 0;text-align:center}
  @media(max-width:680px){.trust-grid{grid-template-columns:repeat(2,1fr)}}
  .trust .t b{display:block;font-size:30px;font-weight:900;color:var(--yellow)}
  .trust .t span{font-size:13px;color:rgba(255,255,255,.72)}

  /* Why */
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
  @media(max-width:860px){.grid-3{grid-template-columns:1fr}}
  .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .18s,box-shadow .18s}
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .card .ic{width:52px;height:52px;border-radius:14px;background:#fff3e8;color:var(--orange);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px}
  .card h4{font-size:18px;font-weight:800;margin-bottom:8px}
  .card p{color:var(--gray);font-size:15px}

  /* Resources */
  .res-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:44px}
  @media(max-width:760px){.res-grid{grid-template-columns:1fr}}
  .res{position:relative;border-radius:var(--radius);overflow:hidden;padding:28px;color:#fff;min-height:180px;display:flex;flex-direction:column;justify-content:flex-end}
  .res.r1{background:linear-gradient(135deg,#1A3A6B,#0E1B2A)}
  .res.r2{background:linear-gradient(135deg,#FF6A00,#E85C00)}
  .res.r3{background:linear-gradient(135deg,#13263b,#2a4a7a)}
  .res.r4{background:linear-gradient(135deg,#0f6b54,#0E1B2A)}
  .res h4{font-size:20px;font-weight:800}
  .res p{font-size:14px;color:rgba(255,255,255,.85);margin-top:6px}
  .res .num{position:absolute;top:18px;right:22px;font-size:46px;font-weight:900;opacity:.18}

  /* Areas */
  .areas{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;justify-content:center}
  .area{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 20px;font-weight:600;font-size:15px;color:var(--blue)}
  .area:hover{border-color:var(--orange);color:var(--orange)}

  /* Process */
  .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:44px;counter-reset:s}
  @media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
  @media(max-width:520px){.steps{grid-template-columns:1fr}}
  .step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px;position:relative}
  .step .n{counter-increment:s;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
  .step .n:before{content:counter(s)}
  .step h5{font-size:16px;font-weight:800}
  .step p{font-size:13px;color:var(--gray);margin-top:4px}

  /* Cases */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
  @media(max-width:860px){.case-grid{grid-template-columns:1fr}}
  .case{background:linear-gradient(180deg,#fff,#fbfdff);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
  .case .big{font-size:38px;font-weight:900;color:var(--orange)}
  .case .big.blue{color:var(--blue)}
  .case .big.green{color:#0f9d58}
  .case h4{font-size:17px;font-weight:800;margin:6px 0 8px}
  .case p{font-size:14px;color:var(--gray)}

  /* Case photo */
  .photo-case{margin-top:54px;text-align:center}
  .photo-case .frame{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
  .photo-case .frame img{display:block;max-height:520px;width:auto;border-radius:10px}
  .photo-case .cap{margin-top:16px;color:var(--gray);font-size:15px}
  .photo-case .cap b{color:var(--ink);font-size:17px;display:block;margin-bottom:4px}
  @media(max-width:860px){.photo-case .frame img{max-height:none;width:100%}}

  /* Testimonials */
  .t-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
  @media(max-width:860px){.t-grid{grid-template-columns:1fr}}
  .tcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
  .tcard .stars{color:var(--yellow);font-size:16px;margin-bottom:10px}
  .tcard p{font-size:15px;color:#39424f}
  .tcard .who{margin-top:14px;display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700}
  .tcard .av{width:38px;height:38px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}

  /* FAQ */
  .faq{max-width:780px;margin:40px auto 0}
  .faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;background:#fff}
  .faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 20px;font-size:16px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
  .faq-q .plus{color:var(--orange);font-size:22px;transition:transform .2s}
  .faq-item.open .plus{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 20px;color:var(--gray);font-size:15px}
  .faq-item.open .faq-a{max-height:240px;padding:0 20px 18px}

  /* Final CTA */
  .final{background:radial-gradient(900px 500px at 70% 0%,#1d3a63,var(--navy));color:#fff;text-align:center}
  .final h2{font-size:36px;font-weight:900}
  .final p{margin-top:14px;color:rgba(255,255,255,.85);font-size:17px}
  .final .btn{margin-top:26px}

  /* Footer */
  footer{background:#0a121d;color:rgba(255,255,255,.7);padding:40px 0;font-size:14px}
  .foot-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
  .foot-grid a{color:rgba(255,255,255,.75)}
  .foot-grid a:hover{color:#fff}
  .foot-cols{display:flex;gap:50px;flex-wrap:wrap}
  .foot-col h5{color:#fff;font-size:15px;margin-bottom:12px}
  .foot-col p{margin-bottom:6px}
  .copy{border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:18px;font-size:13px;color:rgba(255,255,255,.5)}

  /* WeChat QR modal */
  .modal-mask{position:fixed;inset:0;background:rgba(8,15,25,.6);z-index:80;display:none;align-items:center;justify-content:center;padding:20px}
  .modal-mask.show{display:flex}
  .modal{background:#fff;border-radius:18px;max-width:340px;width:100%;padding:26px;text-align:center;position:relative;box-shadow:var(--shadow-lg)}
  .modal .close{position:absolute;top:12px;right:16px;border:none;background:none;font-size:24px;color:#999;cursor:pointer;line-height:1}
  .modal h4{font-size:19px;font-weight:800;margin-bottom:4px}
  .modal .wxid{color:var(--orange-d);font-weight:700;margin:6px 0 14px}
  .modal .qr{width:200px;height:200px;object-fit:contain;margin:0 auto;border:1px solid var(--line);border-radius:12px;background:#fafafa}
  .modal .qr-ph{width:200px;height:200px;margin:0 auto;border:1px dashed var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--gray);font-size:13px;padding:14px}
  .modal .hint{font-size:13px;color:var(--gray);margin-top:14px}
  .modal .copy-btn{margin-top:14px;background:#07c160;color:#fff;border:none;font-weight:700;padding:10px 18px;border-radius:999px;cursor:pointer;font-size:14px}

  /* Float buttons */
  .float{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:12px}
  .fab{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;box-shadow:var(--shadow-lg);cursor:pointer;border:none}
  .fab.wx{background:#07c160}
  .fab.tel{background:var(--orange)}
  .fab.top{background:var(--blue);display:none}
  @media(max-width:520px){.float{right:12px;bottom:12px}}

  .badge-new{position:absolute;top:-10px;right:-10px;background:var(--orange);color:#fff;font-size:11px;font-weight:800;padding:3px 8px;border-radius:999px}

  /* GEO 核心结论块（AI 可直接引用的直接答案） */
  .verdict{background:#fff;border-bottom:1px solid var(--line);padding:30px 0}
  .verdict .wrap{max-width:880px}
  .verdict .vtext{font-size:19px;line-height:1.7;font-weight:700;color:var(--ink);margin-top:10px;
    border-left:4px solid var(--orange);padding:6px 0 6px 18px;
    background:linear-gradient(90deg,rgba(255,106,0,.06),transparent 60%);border-radius:0 8px 8px 0}

  /* About 页特有 */
  .about-intro{padding:70px 0}
  .about-intro .grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
  @media(max-width:860px){.about-intro .grid-2{grid-template-columns:1fr}}
  .about-intro p{color:var(--gray);font-size:16px;margin-top:14px}
  .about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
  .about-stats .s{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center}
  .about-stats .s b{display:block;font-size:24px;font-weight:900;color:var(--orange)}
  .about-stats .s span{font-size:13px;color:var(--gray)}