:root{
    --pink:#ff2e63;
    --cyan:#00d1c1;
    --yellow:#ffd60a;
    --purple:#7b2ff7;
    --dark:#111318;
    --text:#1c1e26;
    --muted:#565a67;
    --light:#f6f7fb;
    --white:#ffffff;
    --radius:20px;
    --radius-sm:12px;
    --shadow:0 12px 40px rgba(17,19,24,.08);
    --shadow-hover:0 20px 50px rgba(255,46,99,.18);
    --container:1180px;
    --nav-gap:0;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:var(--text);
    background:linear-gradient(180deg,#fdfbfa 0%,#f6f7fb 30%,#f2f5ff 100%);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;height:auto;display:block}
  a{text-decoration:none;color:inherit}
  ul{list-style:none}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

  /* ===== 顶部导航 ===== */
  .site-header{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(17,19,24,.06);
  }
  .nav-wrap{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 0;gap:16px;flex-wrap:wrap;
  }
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand .ai-page-logo{max-width:130px}
  .brand-text{font-weight:800;font-size:18px;color:var(--dark);letter-spacing:.5px}
  .brand-text span{color:var(--pink)}
  .nav-links{
    display:flex;align-items:center;gap:var(--nav-gap);
    flex-wrap:wrap;
  }
  .nav-links a{
    font-size:14px;font-weight:600;color:var(--muted);
    padding:8px 12px;border-radius:10px;
    transition:color .25s,background .25s;
    white-space:nowrap;
  }
  .nav-links a:hover{color:var(--pink);background:rgba(255,46,99,.07)}
  .nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;
    padding:11px 22px;border-radius:50px;font-weight:700;font-size:14px;
    border:none;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--pink),var(--purple));
    color:#fff;box-shadow:0 8px 22px rgba(255,46,99,.32);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,46,99,.42)}
  .btn-ghost{
    background:#fff;color:var(--dark);border:1.5px solid rgba(17,19,24,.14);
  }
  .btn-ghost:hover{border-color:var(--pink);color:var(--pink);transform:translateY(-2px)}
  .btn-lg{padding:15px 32px;font-size:16px}
  .menu-toggle{
    display:none;background:none;border:none;cursor:pointer;
    width:42px;height:42px;border-radius:10px;
    background:rgba(255,46,99,.1);
    align-items:center;justify-content:center;
  }
  .menu-toggle span{display:block;width:20px;height:2px;background:var(--pink);position:relative}
  .menu-toggle span::before,.menu-toggle span::after{
    content:'';position:absolute;left:0;width:20px;height:2px;background:var(--pink);transition:transform .3s;
  }
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}

  /* ===== HERO 首屏 ===== */
  .hero{
    position:relative;overflow:hidden;
    padding:88px 0 76px;
    background:
      radial-gradient(circle at 12% 20%,rgba(255,46,99,.14),transparent 45%),
      radial-gradient(circle at 88% 15%,rgba(0,209,193,.16),transparent 42%),
      radial-gradient(circle at 70% 90%,rgba(123,47,247,.12),transparent 50%),
      linear-gradient(135deg,#fff7f9 0%,#f3f8ff 50%,#fffdf2 100%);
  }
  .hero::before{
    content:'';position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(17,19,24,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(17,19,24,.035) 1px,transparent 1px);
    background-size:56px 56px;
    mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 72%);
    -webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 72%);
  }
  .hero-inner{position:relative;z-index:2}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:7px 16px;border-radius:50px;font-size:13px;font-weight:700;
    background:rgba(255,46,99,.1);color:var(--pink);
    border:1px solid rgba(255,46,99,.2);margin-bottom:24px;
    animation:fadeUp .7s ease both;
  }
  .hero-badge i{width:8px;height:8px;border-radius:50%;background:var(--cyan);display:inline-block;animation:pulse 1.8s infinite}
  .hero h1{
    font-size:clamp(30px,5vw,56px);line-height:1.15;font-weight:900;letter-spacing:-1px;
    color:var(--dark);max-width:820px;margin-bottom:22px;
    animation:fadeUp .7s .08s ease both;
  }
  .hero h1 em{
    font-style:normal;
    background:linear-gradient(120deg,var(--pink),var(--purple) 55%,var(--cyan));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-sub{
    font-size:clamp(15px,1.8vw,18px);color:var(--muted);max-width:640px;
    margin-bottom:34px;animation:fadeUp .7s .16s ease both;
  }
  .hero-actions{
    display:flex;flex-wrap:wrap;gap:14px;align-items:center;
    animation:fadeUp .7s .24s ease both;
  }
  .hero-stats{
    display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
    margin-top:56px;animation:fadeUp .7s .34s ease both;
  }
  .stat-card{
    background:rgba(255,255,255,.78);
    border:1px solid rgba(255,255,255,.9);
    border-radius:var(--radius-sm);
    padding:20px 18px;text-align:left;
    box-shadow:0 8px 26px rgba(17,19,24,.05);
    transition:transform .3s,box-shadow .3s;
    backdrop-filter:blur(6px);
  }
  .stat-card:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(255,46,99,.12)}
  .stat-num{
    font-size:clamp(22px,3vw,32px);font-weight:900;letter-spacing:-.5px;color:var(--dark);
    display:flex;align-items:baseline;gap:4px;
  }
  .stat-num span{font-size:14px;font-weight:700;color:var(--pink)}
  .stat-label{font-size:13px;color:var(--muted);font-weight:600;margin-top:6px}

  /* ===== 通用 Section ===== */
  .section{padding:80px 0}
  .section-head{
    max-width:720px;margin:0 auto 48px;text-align:center;
  }
  .eyebrow{
    display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;
    text-transform:uppercase;color:var(--pink);
    padding:5px 14px;border-radius:50px;
    background:rgba(255,46,99,.08);margin-bottom:14px;
  }
  .section-head h2{
    font-size:clamp(24px,3.6vw,38px);font-weight:900;color:var(--dark);
    line-height:1.25;letter-spacing:-.5px;margin-bottom:14px;
  }
  .section-head p{font-size:16px;color:var(--muted)}
  .divider{width:56px;height:4px;border-radius:4px;margin:18px auto 0;
    background:linear-gradient(90deg,var(--pink),var(--cyan));}

  /* ===== 关于我们 平台介绍 ===== */
  .about-grid{
    display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start;
  }
  .about-text h2{font-size:clamp(24px,3vw,34px);font-weight:900;color:var(--dark);margin-bottom:18px;letter-spacing:-.5px}
  .about-text p{color:var(--muted);font-size:15.5px;margin-bottom:16px}
  .about-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
  .tag{
    display:inline-block;padding:7px 15px;border-radius:50px;font-size:13px;font-weight:700;
    background:#fff;border:1px solid rgba(17,19,24,.08);color:var(--text);
    transition:transform .25s,box-shadow .25s,border-color .25s;
  }
  .tag:hover{transform:translateY(-2px);border-color:var(--pink);box-shadow:0 8px 18px rgba(255,46,99,.12)}
  .about-card{
    background:linear-gradient(160deg,#fff,#fdf6f8);
    border-radius:var(--radius);padding:30px;
    border:1px solid rgba(255,46,99,.12);
    box-shadow:var(--shadow);
    position:relative;overflow:hidden;
  }
  .about-card::after{
    content:'';position:absolute;top:-60px;right:-60px;width:160px;height:160px;
    border-radius:50%;background:radial-gradient(circle,rgba(0,209,193,.25),transparent 70%);
  }
  .about-card h3{font-size:18px;font-weight:800;margin-bottom:18px;color:var(--dark)}
  .about-list li{
    display:flex;align-items:flex-start;gap:12px;
    padding:10px 0;font-size:14.5px;color:var(--text);font-weight:600;
    border-bottom:1px dashed rgba(17,19,24,.08);
  }
  .about-list li:last-child{border-bottom:none}
  .about-list li span{
    width:22px;height:22px;border-radius:50%;flex-shrink:0;
    background:linear-gradient(135deg,var(--pink),var(--purple));
    color:#fff;font-size:12px;font-weight:800;
    display:inline-flex;align-items:center;justify-content:center;margin-top:2px;
  }

  /* ===== 服务能力卡片 ===== */
  .service-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  }
  .service-card{
    background:#fff;border-radius:var(--radius);padding:28px;
    border:1px solid rgba(17,19,24,.06);
    box-shadow:0 4px 20px rgba(17,19,24,.04);
    transition:transform .3s,box-shadow .3s,border-color .3s;
    position:relative;overflow:hidden;
  }
  .service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:rgba(255,46,99,.25)}
  .service-icon{
    width:52px;height:52px;border-radius:15px;display:flex;align-items:center;justify-content:center;
    font-size:22px;margin-bottom:18px;font-weight:900;color:#fff;
    background:linear-gradient(135deg,var(--pink),var(--purple));
    box-shadow:0 8px 20px rgba(255,46,99,.25);
  }
  .service-card:nth-child(2) .service-icon{background:linear-gradient(135deg,var(--cyan),#0b8f9d);box-shadow:0 8px 20px rgba(0,209,193,.25)}
  .service-card:nth-child(3) .service-icon{background:linear-gradient(135deg,var(--yellow),#f4a300);box-shadow:0 8px 20px rgba(255,214,10,.3);color:var(--dark)}
  .service-card:nth-child(4) .service-icon{background:linear-gradient(135deg,#7b2ff7,#4a0fbf);box-shadow:0 8px 20px rgba(123,47,247,.25)}
  .service-card:nth-child(5) .service-icon{background:linear-gradient(135deg,#ff6b6b,#e63946);box-shadow:0 8px 20px rgba(230,57,70,.25)}
  .service-card:nth-child(6) .service-icon{background:linear-gradient(135deg,#0b8f9d,var(--cyan));box-shadow:0 8px 20px rgba(0,209,193,.25)}
  .service-card h3{font-size:18px;font-weight:800;margin-bottom:10px;color:var(--dark)}
  .service-card p{font-size:14.5px;color:var(--muted);line-height:1.75}

  /* ===== 一站式制作 流程步骤 ===== */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
  .step{position:relative;background:#fff;border-radius:var(--radius);padding:26px 22px;
    border:1px solid rgba(17,19,24,.06);box-shadow:0 4px 20px rgba(17,19,24,.04);
    transition:transform .3s,box-shadow .3s}
  .step:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
  .step-num{font-size:32px;font-weight:900;line-height:1;
    background:linear-gradient(135deg,var(--pink),var(--purple));
    -webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:14px}
  .step h4{font-size:16px;font-weight:800;margin-bottom:8px;color:var(--dark)}
  .step p{font-size:13.5px;color:var(--muted)}

  /* ===== 行业方案 & 服务网络 ===== */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
  .solution-list{display:grid;gap:14px}
  .solution-item{
    display:flex;gap:14px;align-items:flex-start;
    padding:18px 20px;border-radius:var(--radius-sm);background:#fff;
    border:1px solid rgba(17,19,24,.06);
    transition:transform .25s,box-shadow .25s;
  }
  .solution-item:hover{transform:translateX(6px);box-shadow:0 10px 26px rgba(17,19,24,.06)}
  .solution-item .dot{
    width:10px;height:10px;border-radius:50%;flex-shrink:0;margin-top:7px;
    background:linear-gradient(135deg,var(--pink),var(--purple));
  }
  .solution-item h4{font-size:15px;font-weight:800;margin-bottom:4px;color:var(--dark)}
  .solution-item p{font-size:13.5px;color:var(--muted)}
  .network-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .network-card{
    background:linear-gradient(155deg,#fff,#fafbff);
    border:1px solid rgba(17,19,24,.07);border-radius:var(--radius-sm);
    padding:20px;transition:transform .3s,box-shadow .3s,border-color .3s;
  }
  .network-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(0,209,193,.3)}
  .network-card h4{font-size:15px;font-weight:800;margin-bottom:6px;color:var(--dark)}
  .network-card p{font-size:13px;color:var(--muted)}

  /* ===== 案例中心 ===== */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .case-card{
    border-radius:var(--radius);overflow:hidden;background:#fff;
    border:1px solid rgba(17,19,24,.06);box-shadow:0 4px 20px rgba(17,19,24,.04);
    transition:transform .3s,box-shadow .3s;
  }
  .case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
  .case-media{aspect-ratio:16/9;overflow:hidden;background:#f2f4f8}
  .case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
  .case-card:hover .case-media img{transform:scale(1.06)}
  .case-body{padding:20px}
  .case-body h3{font-size:16px;font-weight:800;margin-bottom:8px;color:var(--dark)}
  .case-body p{font-size:13.5px;color:var(--muted)}

  /* ===== 对比评测 表格 ===== */
  .compare-wrap{
    background:#fff;border-radius:var(--radius);overflow:hidden;
    border:1px solid rgba(17,19,24,.07);box-shadow:var(--shadow);
  }
  .compare-table{width:100%;border-collapse:collapse;font-size:14.5px}
  .compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid rgba(17,19,24,.06)}
  .compare-table thead th{background:linear-gradient(135deg,#fff5f7,#f3f8ff);font-weight:800;color:var(--dark);font-size:14px}
  .compare-table tbody tr:last-child td{border-bottom:none}
  .compare-table tbody tr:hover{background:#fcfbff}
  .compare-table td:first-child{font-weight:700;color:var(--dark)}
  .score-badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 14px;border-radius:50px;font-weight:800;font-size:13px;
    background:linear-gradient(135deg,rgba(255,46,99,.12),rgba(123,47,247,.12));
    color:var(--pink);
  }
  .stars{color:#ffb703;letter-spacing:2px;font-size:15px}
  .compare-note{
    display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
    padding:22px 26px;background:linear-gradient(135deg,#fff7f9,#f2fbff);
    border-top:1px solid rgba(17,19,24,.06);
  }
  .compare-note strong{font-size:15px;color:var(--dark)}
  .compare-note span{font-size:14px;color:var(--muted)}

  /* ===== 需求匹配 + Token比价 ===== */
  .demand-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
  .form-card{
    background:#fff;border-radius:var(--radius);padding:34px;
    border:1px solid rgba(17,19,24,.07);box-shadow:var(--shadow);
  }
  .form-card h3{font-size:20px;font-weight:900;color:var(--dark);margin-bottom:6px}
  .form-card .form-desc{font-size:14px;color:var(--muted);margin-bottom:24px}
  .form-group{margin-bottom:16px}
  .form-group label{display:block;font-size:13.5px;font-weight:700;margin-bottom:6px;color:var(--dark)}
  .form-group input,.form-group select,.form-group textarea{
    width:100%;padding:12px 14px;border-radius:10px;
    border:1.5px solid rgba(17,19,24,.12);background:#fbfbfd;
    font-size:14px;font-family:inherit;color:var(--text);
    transition:border-color .25s,box-shadow .25s,background .25s;
  }
  .form-group input:focus,.form-group select:focus,.form-group textarea:focus{
    outline:none;border-color:var(--pink);background:#fff;
    box-shadow:0 0 0 3px rgba(255,46,99,.12);
  }
  .form-group textarea{min-height:100px;resize:vertical}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .token-card{
    background:linear-gradient(160deg,#fff,#f7f9ff);
    border-radius:var(--radius);padding:30px;
    border:1px solid rgba(17,19,24,.07);box-shadow:var(--shadow);
  }
  .token-card h3{font-size:20px;font-weight:900;color:var(--dark);margin-bottom:6px}
  .token-card > p{font-size:14px;color:var(--muted);margin-bottom:22px}
  .token-list{display:grid;gap:12px}
  .token-row{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:14px 16px;border-radius:12px;background:#fff;
    border:1px solid rgba(17,19,24,.07);
    transition:transform .25s,box-shadow .25s;
  }
  .token-row:hover{transform:translateX(4px);box-shadow:0 8px 20px rgba(17,19,24,.06)}
  .token-model{font-weight:800;font-size:14px;color:var(--dark)}
  .token-model small{display:block;font-weight:600;color:var(--muted);font-size:12px}
  .token-price{font-weight:900;font-size:15px;color:var(--pink);white-space:nowrap}
  .token-price em{font-style:normal;font-size:12px;color:var(--muted);font-weight:600}

  /* ===== 客户评论 ===== */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .review-card{
    background:#fff;border-radius:var(--radius);padding:26px;
    border:1px solid rgba(17,19,24,.06);box-shadow:0 4px 20px rgba(17,19,24,.04);
    transition:transform .3s,box-shadow .3s;
    display:flex;flex-direction:column;
  }
  .review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .review-stars{color:#ffb703;font-size:15px;letter-spacing:2px;margin-bottom:12px}
  .review-text{font-size:14.5px;color:var(--text);line-height:1.8;flex:1}
  .review-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid rgba(17,19,24,.07)}
  .avatar{
    width:42px;height:42px;border-radius:50%;flex-shrink:0;
    display:flex;align-items:center;justify-content:center;
    font-size:15px;font-weight:900;color:#fff;
    background:linear-gradient(135deg,var(--pink),var(--purple));
  }
  .review-card:nth-child(2) .avatar{background:linear-gradient(135deg,var(--cyan),#0b8f9d)}
  .review-card:nth-child(3) .avatar{background:linear-gradient(135deg,var(--yellow),#f4a300);color:var(--dark)}
  .review-card:nth-child(4) .avatar{background:linear-gradient(135deg,#7b2ff7,#4a0fbf)}
  .review-card:nth-child(5) .avatar{background:linear-gradient(135deg,#ff6b6b,#e63946)}
  .review-card:nth-child(6) .avatar{background:linear-gradient(135deg,#0b8f9d,var(--cyan))}
  .review-user strong{display:block;font-size:14px;color:var(--dark)}
  .review-user span{font-size:12px;color:var(--muted)}

  /* ===== FAQ ===== */
  .faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
  .faq-item{
    background:#fff;border-radius:var(--radius-sm);
    border:1px solid rgba(17,19,24,.07);overflow:hidden;
    transition:box-shadow .25s,border-color .25s;
  }
  .faq-item.active{box-shadow:0 12px 30px rgba(255,46,99,.1);border-color:rgba(255,46,99,.25)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;background:none;border:none;cursor:pointer;
    font-size:15px;font-weight:700;color:var(--dark);text-align:left;font-family:inherit;
  }
  .faq-q .icon{
    width:26px;height:26px;border-radius:50%;flex-shrink:0;
    display:inline-flex;align-items:center;justify-content:center;
    background:rgba(255,46,99,.1);color:var(--pink);font-size:16px;font-weight:800;
    transition:transform .3s,background .3s;
  }
  .faq-item.active .faq-q .icon{transform:rotate(45deg);background:var(--pink);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.8}

  /* ===== AI百科 & 行业资讯 ===== */
  .wiki-news{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
  .wiki-box,.news-box{
    background:#fff;border-radius:var(--radius);padding:30px;
    border:1px solid rgba(17,19,24,.07);box-shadow:0 4px 20px rgba(17,19,24,.04);
  }
  .wiki-box h3,.news-box h3{font-size:19px;font-weight:900;color:var(--dark);margin-bottom:18px}
  .wiki-list li,.news-list li{
    padding:13px 0;border-bottom:1px dashed rgba(17,19,24,.08);
    font-size:14.5px;color:var(--text);font-weight:600;
    display:flex;align-items:center;gap:10px;
  }
  .wiki-list li:last-child,.news-list li:last-child{border-bottom:none}
  .wiki-list li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--pink);flex-shrink:0}
  .news-list li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--cyan);flex-shrink:0}
  .wiki-list a,.news-list a{transition:color .25s}
  .wiki-list a:hover,.news-list a:hover{color:var(--pink)}

  /* ===== 联系我们 / 页脚 ===== */
  .contact-section{padding:80px 0 0}
  .contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:40px}
  .contact-card{
    background:#fff;border-radius:var(--radius);padding:28px;text-align:center;
    border:1px solid rgba(17,19,24,.07);box-shadow:0 4px 20px rgba(17,19,24,.04);
    transition:transform .3s,box-shadow .3s;
  }
  .contact-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .contact-card .icon-box{
    width:56px;height:56px;border-radius:16px;margin:0 auto 16px;
    display:flex;align-items:center;justify-content:center;font-size:24px;
    background:linear-gradient(135deg,rgba(255,46,99,.1),rgba(123,47,247,.1));
  }
  .contact-card h4{font-size:16px;font-weight:800;margin-bottom:8px;color:var(--dark)}
  .contact-card p{font-size:14px;color:var(--muted);word-break:break-all}
  .contact-card a{color:var(--pink);font-weight:700}
  .qr-box{
    display:flex;align-items:center;justify-content:center;gap:24px;flex-wrap:wrap;
    background:#fff;border-radius:var(--radius);padding:28px;
    border:1px solid rgba(17,19,24,.07);box-shadow:0 4px 20px rgba(17,19,24,.04);
    margin-bottom:40px;
  }
  .qr-box img{width:130px;height:130px;object-fit:contain;border-radius:12px}
  .qr-box div p{font-size:14px;color:var(--muted);font-weight:600}
  .qr-box div strong{display:block;font-size:16px;color:var(--dark);margin-bottom:6px}

  /* ===== 友情链接 ===== */
  .friend-links{
    background:#fff;border-radius:var(--radius);padding:26px 30px;
    border:1px solid rgba(17,19,24,.07);box-shadow:0 4px 20px rgba(17,19,24,.04);
    margin-bottom:40px;
  }
  .friend-links h3{font-size:16px;font-weight:900;color:var(--dark);margin-bottom:14px}
  .friend-links .links{display:flex;flex-wrap:wrap;gap:10px 22px}
  .friend-links a{font-size:14px;color:var(--muted);font-weight:600;transition:color .25s}
  .friend-links a:hover{color:var(--pink)}

  /* ===== 浮动客服 & 返回顶部 ===== */
  .float-tools{position:fixed;right:22px;bottom:26px;z-index:200;display:flex;flex-direction:column;gap:12px}
  .float-btn{
    width:50px;height:50px;border-radius:50%;border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    background:#fff;box-shadow:0 8px 24px rgba(17,19,24,.15);
    font-size:18px;transition:transform .25s,box-shadow .25s;
    color:var(--pink);font-weight:800;
  }
  .float-btn:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 14px 30px rgba(255,46,99,.25)}
  .float-btn.primary{background:linear-gradient(135deg,var(--pink),var(--purple));color:#fff}
  .back-top{opacity:0;pointer-events:none;transition:opacity .3s,transform .3s}
  .back-top.show{opacity:1;pointer-events:auto}

  /* ===== 动画 ===== */
  @keyframes fadeUp{
    from{opacity:0;transform:translateY(24px)}
    to{opacity:1;transform:translateY(0)}
  }
  @keyframes pulse{
    0%,100%{opacity:1;transform:scale(1)}
    50%{opacity:.5;transform:scale(1.3)}
  }
  .reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
  .reveal.visible{opacity:1;transform:translateY(0)}

  /* ===== 响应式 ===== */
  @media(max-width:1024px){
    .about-grid,.split,.demand-grid,.wiki-news{grid-template-columns:1fr;gap:30px}
    .service-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .case-grid{grid-template-columns:repeat(2,1fr)}
  }
  @media(max-width:860px){
    .nav-links{
      display:none;width:100%;flex-direction:column;align-items:flex-start;
      gap:4px;padding:10px 0 4px;order:3;
    }
    .nav-links.open{display:flex}
    .nav-links a{width:100%;padding:10px 14px}
    .menu-toggle{display:flex}
    .hero-stats{grid-template-columns:repeat(2,1fr)}
    .review-grid{grid-template-columns:repeat(2,1fr)}
    .contact-grid{grid-template-columns:1fr}
  }
  @media(max-width:640px){
    .container{padding:0 18px}
    .section{padding:56px 0}
    .hero{padding:56px 0 50px}
    .service-grid,.steps,.case-grid,.review-grid,.network-grid{grid-template-columns:1fr}
    .hero-stats{grid-template-columns:1fr 1fr;gap:12px}
    .form-row{grid-template-columns:1fr}
    .compare-table{font-size:13px}
    .compare-table th,.compare-table td{padding:12px 10px}
    .compare-wrap{overflow-x:auto}
    .form-card,.token-card{padding:24px}
    .friend-links{padding:22px}
    .float-tools{right:14px;bottom:18px}
  }