:root{
  --bg:#0a0e14;
  --bg-alt:#11161f;
  --bg-card:#141b26;
  --ink:#e8edf4;
  --ink-soft:#9aa7b8;
  --brand:#4d8bff;
  --brand-bright:#7eb0ff;
  --brand-dark:#0b46c2;
  --accent:#22d3c5;
  --line:#243040;
  --line-soft:#1c2533;
  --radius:16px;
  --maxw:1140px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}
*{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(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* 按钮 */
.btn{display:inline-block;padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;transition:.2s;cursor:pointer;border:1px solid transparent}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-bright);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-bright)}

/* 导航 */
.nav{position:sticky;top:0;z-index:50;background:transparent;backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.18);padding:12px 0;color:#fff}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{font-weight:800;font-size:22px;letter-spacing:.3px;display:flex;align-items:center;gap:10px}
.brand-mark{color:#fff;font-size:22px}
.brand-mark-img{height:46px;width:auto;display:block}
.brand-text{font-size:20px;font-weight:800;letter-spacing:.3px}
.brand-suffix{font-size:13px;font-weight:700;color:#fff;background:var(--brand);padding:2px 8px;border-radius:6px;margin-left:4px}
.nav-links{display:flex;gap:44px;font-size:15px;font-weight:700;color:#fff}
.nav-links a{position:relative;transition:color .2s ease}
.nav-links a:hover{color:var(--brand-bright)}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--brand-bright));box-shadow:0 0 10px rgba(34,211,197,.6)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:42px;height:42px;background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 英雄区 */
.hero{position:relative;overflow:hidden;padding:90px 0 70px;background:radial-gradient(1200px 600px at 50% -10%,#13243f 0%,var(--bg) 60%)}
.hero-bg{position:absolute;inset:0;background-image:radial-gradient(circle at 80% 10%,rgba(77,139,255,.16),transparent 42%),radial-gradient(circle at 10% 90%,rgba(34,211,197,.12),transparent 42%);background-size:cover}
.hero-inner{position:relative;text-align:center;max-width:820px;margin:0 auto}
.badge{display:inline-block;padding:6px 14px;border-radius:999px;background:rgba(77,139,255,.12);border:1px solid rgba(77,139,255,.32);color:var(--brand-bright);font-size:13px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.15;font-weight:800;letter-spacing:-.5px}
.hero .hl{color:var(--brand-bright)}
.lead{margin:22px auto 0;max-width:620px;color:var(--ink-soft);font-size:17px}
.hero-cta{margin-top:32px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stats{margin-top:54px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:720px;margin-left:auto;margin-right:auto}
.hero-stats div{background:var(--bg-card);border:1px solid var(--line);border-radius:14px;padding:18px 10px;box-shadow:var(--shadow)}
.hero-stats strong{display:block;font-size:26px;color:var(--brand-bright)}
.hero-stats span{font-size:13px;color:var(--ink-soft)}

/* 通用区块 */
.section{padding:76px 0}
.section-alt{background:var(--bg-alt)}
.section-title{text-align:center;font-size:clamp(26px,4vw,36px);font-weight:800}
.section-sub{text-align:center;color:var(--ink-soft);margin-top:10px;margin-bottom:42px}

/* 网格 */
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}

/* 卡片 */
.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-4px);border-color:var(--brand)}
.card-ico{font-size:30px;margin-bottom:12px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--ink-soft);font-size:14.5px}
.card-soft{background:var(--bg-card)}

/* 特性 */
.feature{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative}
.feature-num{font-size:30px;font-weight:800;color:#2a3a55}
.feature h3{margin:8px 0 8px;font-size:19px}
.feature p{color:var(--ink-soft);font-size:14.5px}

/* CTA */
.cta{background:linear-gradient(135deg,#0e2a66 0%,#0b46c2 100%);color:#fff;text-align:center}
.cta h2{font-size:clamp(24px,4vw,34px);font-weight:800}
.cta p{margin:12px auto 26px;max-width:560px;opacity:.92}
.contact-form{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;max-width:760px;margin:0 auto}
.contact-form input{padding:13px 16px;border-radius:10px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;min-width:200px;font-size:15px;flex:1}
.contact-form input::placeholder{color:rgba(255,255,255,.6)}
.contact-form .btn{flex:0 0 auto}
.contact-form select{padding:13px 16px;border-radius:10px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;min-width:200px;font-size:15px;flex:1}
.contact-form select option{color:#111}
.form-tip{margin-top:16px;font-weight:600}
.form-note{margin-top:12px;font-size:12px;color:rgba(255,255,255,.78)}

/* 授权服务商标识 */
.partner-badge{display:inline-block;margin:26px auto 0;padding:9px 18px;border-radius:999px;background:var(--bg-card);border:1px solid var(--line);color:var(--ink);font-size:14px;font-weight:600;box-shadow:var(--shadow)}
.partner-badge b{color:var(--brand-bright)}

/* 关于我们 / 服务商 */
.about-inner{max-width:880px;margin:0 auto}
.about-card{display:flex;gap:26px;align-items:flex-start;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow);text-align:left}
.about-logo{flex:0 0 auto;width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:800}
.about-body{flex:1}
.about-body h3{font-size:22px;margin-bottom:4px}
.about-tag{color:var(--brand-bright);font-weight:700;font-size:14px;margin-bottom:14px}
.about-body>p{color:var(--ink-soft);font-size:15px}
.about-list{list-style:none;margin:16px 0;display:grid;gap:8px}
.about-list li{color:var(--ink);font-size:14.5px}
.about-contact{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:8px}
.about-phone{font-size:16px;font-weight:700;color:var(--ink)}
.about-phone a{color:var(--brand-bright)}

/* 行业自律公约 · 承诺表 */
.convention-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:8px;font-size:14.5px}
.ct-row{display:grid;grid-template-columns:140px 1fr;border-bottom:1px solid var(--line)}
.ct-row:last-child{border-bottom:none}
.ct-row>span{padding:12px 16px}
.ct-row>span:first-child{background:var(--bg-alt);color:var(--brand-bright);font-weight:700;border-right:1px solid var(--line)}
.ct-head>span{background:var(--bg-card);color:var(--ink);font-weight:800}
.ct-head>span:first-child{color:var(--ink)}

/* AI 信赖的品牌 · 价值带 */
.value-band{text-align:center}
.value-kicker{color:var(--brand-bright);font-weight:700;font-size:16px;margin:6px 0 2px}
.value-line{font-size:24px;font-weight:800;margin:0 auto;max-width:640px;line-height:1.5}
.solution-band{text-align:center}
.solution-band .btn{margin-top:18px}

/* CTA 直拨电话 */
.cta-phone{margin-top:18px;font-size:16px;font-weight:700}
.cta-phone a{color:#fff;text-decoration:underline}

/* 合作流程 */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.process-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.2s}
.process-card:hover{transform:translateY(-4px);border-color:var(--brand)}
.process-num{font-size:34px;font-weight:800;color:var(--brand-bright);opacity:.22;line-height:1}
.process-card h3{font-size:18px;margin:10px 0 8px}
.process-card p{color:var(--ink-soft);font-size:14.5px}

/* 页脚 */
.footer{border-top:1px solid var(--line-soft);padding:22px 0;background:var(--bg-alt)}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-soft)}
.beian a{color:var(--brand-bright)}

/* 平台标签云 */
.platform-cloud{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;max-width:900px;margin:0 auto}
.tag{display:inline-block;padding:10px 18px;border-radius:999px;background:var(--bg-card);border:1px solid var(--line);font-weight:600;font-size:15px;color:var(--ink);box-shadow:var(--shadow);transition:.2s}
.tag:hover{border-color:var(--brand);color:var(--brand-bright);transform:translateY(-2px)}

/* 三大平台授权生态伙伴标识（Hero 内） */
.partner-row{margin-top:30px}
.partner-row-label{display:block;font-size:13px;color:var(--ink-soft);letter-spacing:1px;margin-bottom:12px}
.partner-pills{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.partner-pill{display:inline-flex;flex-direction:column;align-items:flex-start;padding:10px 18px;border-radius:14px;background:var(--bg-card);border:1px solid var(--line);box-shadow:var(--shadow);transition:.2s;text-align:left;min-width:150px}
.partner-pill b{font-size:15px;color:var(--ink);font-weight:700}
.partner-pill span{font-size:12.5px;color:var(--brand-bright);margin-top:2px}
.partner-pill:hover{border-color:var(--brand);transform:translateY(-3px);background:rgba(77,139,255,.08)}

/* 生态伙伴卡片 */
.eco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.eco-card{display:block;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.2s;box-shadow:var(--shadow);text-align:left}
.eco-card:hover{transform:translateY(-5px);border-color:var(--brand)}
.eco-ico{font-size:34px;margin-bottom:14px}
.eco-card h3{font-size:20px;margin-bottom:4px}
.eco-sub{color:var(--brand-bright);font-weight:700;font-size:13.5px;margin-bottom:12px}
.eco-card p{color:var(--ink-soft);font-size:14.5px;line-height:1.65}
.eco-link{display:inline-block;margin-top:16px;color:var(--brand-bright);font-weight:600;font-size:14px}

/* 核心业务：能力标签 */
.svc-card{display:flex;flex-direction:column}
.svc-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.svc-tags span{font-size:12.5px;padding:5px 11px;border-radius:999px;background:rgba(77,139,255,.1);border:1px solid rgba(77,139,255,.28);color:var(--brand-bright)}

/* 服务优势编号 */
.adv-card .adv-num{font-size:28px;font-weight:800;color:var(--brand-bright);opacity:.28;line-height:1;margin-bottom:8px}
.adv-card h3{font-size:18px;margin-bottom:8px}
.adv-card p{color:var(--ink-soft);font-size:14.5px}

/* 面包屑（子页面） */
.crumb{max-width:var(--maxw);margin:0 auto;padding:18px 24px 0;font-size:13.5px;color:var(--ink-soft)}
.crumb a{color:var(--brand-bright)}
.crumb a:hover{text-decoration:underline}

/* 子页面 Hero 变体 */
.page-hero{padding:64px 0 56px}
.page-hero h1{font-size:clamp(30px,5vw,48px)}

/* 关于我们高亮句 */
.about-highlight{margin-top:14px;padding:14px 16px;border-left:3px solid var(--brand);background:rgba(77,139,255,.07);border-radius:8px;color:var(--ink)!important;font-size:15px;font-weight:600}

/* 优势对比表 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);background:var(--bg-card)}
.compare-table{width:100%;border-collapse:collapse;min-width:720px}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top;font-size:14.5px}
.compare-table th{background:var(--bg-alt);font-weight:700;color:var(--ink)}
.compare-table th.us{background:rgba(77,139,255,.14);color:var(--brand-bright)}
.compare-table th.them{background:var(--bg-alt);color:var(--ink-soft)}
.compare-table td.us{background:rgba(77,139,255,.07);color:var(--ink)}
.compare-table td.them{color:var(--ink-soft)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table tbody tr:hover td{background:rgba(255,255,255,.04)}

/* 响应式 */
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .nav-toggle{display:inline-flex}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:6px 0;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:15px 24px;font-size:16px}
  .nav-links a:hover{background:var(--bg-alt)}
  .nav-links a.active{background:rgba(34,211,197,.10)}
  .nav-links a.active::after{display:none}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .about-card{flex-direction:column;align-items:center;text-align:center}
  .about-list{justify-items:start}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .eco-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .grid-4{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .contact-form input{min-width:100%}
  .section{padding:52px 0}
  .hero{padding:60px 0 44px}
  .brand{font-size:18px}
  .section-title{font-size:24px}
  .hero-stats{gap:12px}
  .hero-stats strong{font-size:22px}
  .compare-table th,.compare-table td{padding:13px 14px;font-size:13.5px}
  .partner-badge{font-size:13px;padding:8px 14px}
  .about-card{padding:24px}
  .partner-pill{min-width:calc(50% - 6px)}
  .page-hero{padding:44px 0 36px}
}

/* 鼠标跟随光（全站统一） */
.cursor-glow{position:fixed;inset:0;z-index:9999;pointer-events:none}
.cursor-glow canvas{display:block;width:100%;height:100%;mix-blend-mode:screen}

/* 顶部蓝色半圆渐变（背景装饰层） */
.top-glow{position:absolute;top:-230px;left:50%;transform:translateX(-50%);width:min(1200px,132vw);height:640px;background:radial-gradient(ellipse 50% 50% at 50% 50%,rgba(43,140,255,.30) 0%,rgba(43,140,255,.12) 45%,rgba(43,140,255,0) 72%);pointer-events:none;z-index:0}
section,header,footer{position:relative;z-index:1}

/* SEO 隐藏关键词区块：对搜索引擎可见、对用户界面无任何影响 */
.seo-txt{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}