:root{
  --ink:#101828;--body:#475467;--muted:#667085;--line:#e4e7ec;--soft:#f7f9fc;
  --brand:#1b4e9b;--brand2:#2f6be0;--accent:#0fb5a6;--warn:#b54708;
  --shadow:0 12px 32px rgba(16,24,40,.08);--radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--body);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand2)}
img{max-width:100%}
.wrap{width:min(calc(100% - 40px),1160px);margin:0 auto}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800}
h2{font-size:clamp(24px,2.8vw,34px);font-weight:750}
h3{font-size:19px;font-weight:700}
h4{font-size:16px;font-weight:700}
p{margin:0}
.lead{font-size:clamp(16px,1.6vw,19px);color:var(--body)}

/* 顶栏 */
.top{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top-in{height:68px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:17px}
.logo svg{width:30px;height:30px;flex:none}
.logo small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.06em}
.nav{display:flex;align-items:center;gap:4px;margin-left:8px;font-size:15px}
.nav>li{list-style:none;position:relative}
.nav a{display:block;padding:9px 12px;border-radius:8px;color:var(--body);font-weight:500}
.nav a:hover,.nav a.on{background:var(--soft);color:var(--brand)}
.nav .sub{position:absolute;top:100%;left:0;min-width:230px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;display:none}
.nav li:hover .sub{display:block}
.nav .sub a{font-size:14px;padding:9px 10px}
.top-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.menu-btn{display:none}
ul.nav{padding:0;margin:0}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.15s}
.btn-p{background:var(--brand);color:#fff}
.btn-p:hover{background:#16407f;color:#fff}
.btn-g{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-g:hover{border-color:#c7d2e0;color:var(--ink)}
.btn-s{padding:9px 16px;font-size:14px}
.btn-w{background:#fff;color:var(--brand)}

/* 通用版块 */
.section{padding:78px 0}
.section.soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:38px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.04em;text-transform:uppercase;margin-bottom:12px}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block}
.section-head p{margin-top:14px;font-size:17px}

/* 英雄区 */
.hero{padding:72px 0 56px;background:radial-gradient(900px 380px at 12% -10%,rgba(47,107,224,.10),transparent 60%),radial-gradient(700px 320px at 92% 0,rgba(15,181,166,.10),transparent 55%),#fff;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero p.lead{margin-top:20px;max-width:600px}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.trust{margin-top:34px;display:flex;gap:26px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.trust b{display:block;font-size:22px;color:var(--ink);font-weight:800}
.panel{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:22px}
.panel h4{margin-bottom:12px}
.line-item{display:flex;align-items:center;gap:10px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.line-item:last-child{border-bottom:0}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none}
.dot.b{background:var(--brand2)}
.dot.o{background:#f79009}

/* 卡片 */
.cards{display:grid;gap:18px}
.cards.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cards.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cards.c4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.18s}
.card:hover{box-shadow:var(--shadow);border-color:#d0d9e6;transform:translateY(-2px)}
.card .ico{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,rgba(47,107,224,.14),rgba(15,181,166,.14));color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:18px;margin-bottom:16px}
.card h3{margin-bottom:10px}
.card p{font-size:15px}
.card ul{margin:12px 0 0;padding-left:18px;font-size:14px;color:var(--body)}
.card li{margin:6px 0}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;font-size:14px;color:var(--brand)}

/* 表格 */
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:15px;background:#fff}
th{background:var(--soft);text-align:left;padding:13px 16px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:13px 16px;border-bottom:1px solid #f0f3f7;vertical-align:top}
tr:last-child td{border-bottom:0}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:st}
.step{position:relative;padding:24px 20px;background:#fff;border:1px solid var(--line);border-radius:12px}
.step:before{counter-increment:st;content:counter(st);position:absolute;top:-14px;left:20px;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.step h4{margin:8px 0 8px}
.step p{font-size:14px}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:12px;padding:0;margin-bottom:12px;background:#fff}
.faq summary{cursor:pointer;padding:17px 20px;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--brand);font-weight:700}
.faq details[open] summary:after{content:"–"}
.faq .a{padding:0 20px 18px;font-size:15px}

/* CTA 条 */
.cta{background:linear-gradient(120deg,#13386f,#1b4e9b 45%,#2f6be0);border-radius:18px;padding:44px;color:#fff;display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.82);margin-top:10px;max-width:620px}
.cta .btn-w{flex:none;margin-left:auto}

/* 页脚 */
.footer{background:#0d1b2e;color:rgba(255,255,255,.7);padding:56px 0 26px;font-size:14px}
.footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.02em}
.footer a{color:rgba(255,255,255,.72);display:block;padding:5px 0;font-size:14px}
.footer a:hover{color:#fff}
.footer .brandline{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:12px}
.footer .bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}

/* 内页头 */
.page-head{padding:64px 0 44px;background:linear-gradient(180deg,#f7f9fc,#fff);border-bottom:1px solid var(--line)}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.page-head p{margin-top:16px;max-width:760px;font-size:17px}

/* 杂项 */
.pill{display:inline-block;padding:4px 12px;border-radius:99px;background:rgba(27,78,155,.08);color:var(--brand);font-size:12.5px;font-weight:600}
.kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px}
.kpi div{padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:12px}
.kpi b{display:block;font-size:28px;color:var(--brand);font-weight:800}
.kpi span{font-size:13px;color:var(--muted)}
.note{font-size:13px;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:start}
.quote{border-left:3px solid var(--brand);padding:6px 0 6px 18px;color:var(--ink);font-size:16px}
.tag{display:inline-block;padding:3px 10px;border-radius:6px;background:var(--soft);border:1px solid var(--line);font-size:12px;color:var(--body);margin:0 6px 6px 0}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;color:var(--ink);background:#fff}
.field input:focus,.field textarea:focus{outline:2px solid rgba(47,107,224,.18);border-color:var(--brand2)}
.qr{width:190px;border:1px solid var(--line);border-radius:12px;display:block}
.article{max-width:780px}
.article h1{font-size:clamp(26px,3.2vw,38px)}
.article .meta{color:var(--muted);font-size:14px;margin:14px 0 26px}
.article h2{margin-top:38px;font-size:24px}
.article h3{margin-top:26px}
.article p{margin:14px 0}
.article ul,.article ol{padding-left:22px}
.article li{margin:7px 0}
.article blockquote{margin:20px 0;padding:12px 18px;background:var(--soft);border-left:3px solid var(--brand);color:var(--body)}
.article table{margin:20px 0}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}

@media(max-width:980px){
  .hero-grid,.split,.contact-grid{grid-template-columns:1fr}
  .cards.c3,.cards.c4{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .kpi{grid-template-columns:1fr 1fr}
  .footer .cols{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .menu-btn{display:inline-flex;margin-left:auto}
  .nav.open{display:flex;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 16px;box-shadow:var(--shadow)}
  .nav.open .sub{position:static;display:block;box-shadow:none;border:0;padding:0 0 6px 10px}
}
@media(max-width:640px){
  .cards.c3,.cards.c4,.steps,.kpi{grid-template-columns:1fr}
  .section{padding:54px 0}
  .cta{padding:28px}
  .cta .btn-w{margin-left:0}
  .hero{padding:48px 0 40px}
}