:root{
  --ink:#0E2A47; --ink2:#163A5F; --blue:#2E6FA8; --blue-l:#5B93C4;
  --gold:#B45309; --soft:#F6F9FC; --line:#E3EAF2; --muted:#5C6B7F;
  --white:#fff; --radius:10px; --maxw:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Source Han Sans SC",sans-serif;
  color:#1F2937;background:#fff;line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.narrow{max-width:860px}

/* ---------- 顶栏 ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:32px;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:19px;letter-spacing:.5px}
.logo .mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,#0E2A47,#2E6FA8);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.logo small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px;line-height:1.2}
.nav{margin-left:auto;display:flex;gap:26px;align-items:center;font-size:15px;color:#334155}
.nav a{padding:6px 0;border-bottom:2px solid transparent;transition:.2s}
.nav a:hover,.nav a.on{color:var(--blue);border-color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:8px;font-size:15px;font-weight:600;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--blue)}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:#96450a}
.btn-ghost{border-color:#CBD8E5;color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(140deg,#0B2239 0%,#0E2A47 45%,#1B4C78 100%);
  color:#fff;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(ellipse at 70% 20%,#000 20%,transparent 72%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;
  padding-top:88px;padding-bottom:88px;align-items:center}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1px;
  color:#9CC3E3;border:1px solid rgba(156,195,227,.4);border-radius:99px;padding:5px 14px;margin-bottom:22px}
.hero .eyebrow i{width:6px;height:6px;border-radius:50%;background:#4ADE80;display:block}
.hero h1{font-size:clamp(28px,3.4vw,44px);line-height:1.3;font-weight:700;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:#7FB6E8}
.hero p.sub{margin-top:20px;font-size:17px;line-height:1.85;color:#C7D8E7;max-width:560px}
.hero .cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero .cta .btn-ghost{border-color:rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.06)}
.hero .cta .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.hero-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:14px;
  padding:26px;backdrop-filter:blur(6px)}
.hero-card .hd{font-size:13px;color:#9CC3E3;letter-spacing:1px;margin-bottom:18px;
  padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.14)}
.hero-card .row{display:flex;align-items:baseline;justify-content:space-between;padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.12)}
.hero-card .row:last-child{border:0;padding-bottom:0}
.hero-card .row span{font-size:14px;color:#C7D8E7}
.hero-card .row b{font-size:22px;color:#fff;font-weight:700}
.hero-card .row b i{font-size:13px;font-style:normal;font-weight:400;color:#9CC3E3;margin-left:3px}

/* ---------- 通用区块 ---------- */
section{padding:76px 0}
section.soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-hd{margin-bottom:40px}
.sec-hd .tag{display:inline-block;font-size:12px;letter-spacing:2px;color:var(--blue);
  font-weight:700;margin-bottom:12px}
.sec-hd h2{font-size:clamp(23px,2.4vw,31px);color:var(--ink);line-height:1.4;letter-spacing:.3px}
.sec-hd p{margin-top:14px;color:var(--muted);font-size:16px;max-width:780px;line-height:1.9}
.center{text-align:center}
.center .sec-hd p{margin-left:auto;margin-right:auto}

.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:.24s;position:relative}
.card:hover{border-color:#BFD3E6;box-shadow:0 10px 30px rgba(14,42,71,.08);transform:translateY(-3px)}
.card .ico{width:46px;height:46px;border-radius:10px;background:#EDF4FA;color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card h3{font-size:19px;color:var(--ink);margin-bottom:10px;letter-spacing:.2px}
.card p{font-size:15px;color:var(--muted);line-height:1.85}
.card ul{margin-top:14px;padding-left:0;list-style:none}
.card ul li{font-size:14.5px;color:#475569;padding-left:20px;position:relative;margin:7px 0}
.card ul li:before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--blue-l)}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;
  color:var(--blue);font-weight:600}

/* 平台条 */
.plat{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;padding:26px 0}
.plat .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:center}
.plat span.lb{font-size:13.5px;color:#94A3B8;letter-spacing:1px}
.plat b{font-size:15px;color:var(--ink);font-weight:600;background:var(--soft);
  border:1px solid var(--line);border-radius:6px;padding:7px 16px}

/* 步骤 */
.steps{counter-reset:s;display:grid;gap:0}
.step{display:grid;grid-template-columns:56px 1fr;gap:20px;padding:22px 0;border-bottom:1px dashed var(--line)}
.step:last-child{border:0}
.step .n{width:44px;height:44px;border-radius:50%;background:#EDF4FA;color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}
.step h4{font-size:17px;color:var(--ink);margin-bottom:6px}
.step p{font-size:15px;color:var(--muted)}

/* 表格 */
table.tb{width:100%;border-collapse:collapse;font-size:15px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
table.tb th{background:var(--ink);color:#fff;text-align:left;padding:14px 18px;font-weight:600;font-size:14.5px}
table.tb td{padding:14px 18px;border-top:1px solid var(--line);color:#334155;vertical-align:top}
table.tb tr:nth-child(even) td{background:#FAFCFF}

/* 案例 */
.case{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);
  border-radius:8px;padding:26px 28px;margin-bottom:20px}
.case .meta{display:flex;gap:10px;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.case .meta b{font-size:17px;color:var(--ink)}
.case .pill{font-size:12px;background:#EDF4FA;color:var(--blue);border-radius:99px;padding:3px 11px;font-weight:600}
.case dl{display:grid;grid-template-columns:88px 1fr;gap:10px 14px;font-size:15px}
.case dt{color:#94A3B8;font-size:13.5px;padding-top:4px}
.case dd{color:#334155}

/* 联系块 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.info-list{list-style:none}
.info-list li{display:grid;grid-template-columns:96px 1fr;gap:14px;padding:15px 0;
  border-bottom:1px solid var(--line);font-size:15.5px}
.info-list li b{color:#94A3B8;font-weight:400;font-size:14px}
.info-list li span{color:var(--ink)}
.note{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:20px 22px;
  font-size:14.5px;color:var(--muted);line-height:1.9}

/* CTA */
.cta-band{background:linear-gradient(135deg,#0E2A47,#1B4C78);color:#fff;padding:62px 0}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.3vw,29px);letter-spacing:.3px}
.cta-band p{color:#C7D8E7;margin-top:10px;font-size:16px}

/* 页头 */
.page-hd{background:linear-gradient(135deg,#0B2239,#163A5F);color:#fff;padding:64px 0 56px}
.page-hd .crumb{font-size:13.5px;color:#9CC3E3;margin-bottom:14px}
.page-hd .crumb a:hover{color:#fff}
.page-hd h1{font-size:clamp(26px,3vw,38px);letter-spacing:.5px;line-height:1.35}
.page-hd p{margin-top:16px;color:#C7D8E7;font-size:16.5px;max-width:760px;line-height:1.85}

/* 页脚 */
footer{background:#0A1F33;color:#9DB2C6;padding:56px 0 0;font-size:14.5px}
footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:42px}
footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.5px}
footer a{color:#9DB2C6;display:block;padding:5px 0;transition:.2s}
footer a:hover{color:#fff}
footer .brandline{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;
  font-size:17px;margin-bottom:14px}
footer .brandline .mark{width:32px;height:32px;border-radius:8px;
  background:linear-gradient(135deg,#2E6FA8,#5B93C4);display:flex;align-items:center;
  justify-content:center;font-size:16px}
footer .desc{line-height:1.9;font-size:14px;color:#8CA3B8}
footer .legal{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 26px;font-size:13.5px;
  color:#7E96AC;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;line-height:1.9}
footer .legal .l a{display:inline;color:#A9C0D4}
footer .legal .l a:hover{color:#fff;text-decoration:underline}
.icp{display:inline-flex;align-items:center;gap:6px;color:#A9C0D4}
.icp:hover{color:#fff;text-decoration:underline}

/* 法务正文 */
.doc{font-size:15.5px;color:#334155;line-height:2}
.doc h2{font-size:19px;color:var(--ink);margin:34px 0 12px}
.doc h2:first-child{margin-top:0}
.doc p{margin:10px 0}
.doc ul{margin:10px 0 10px 22px}
.doc li{margin:6px 0}
.doc .date{color:#94A3B8;font-size:14px;margin-bottom:24px}

@media(max-width:960px){
  .hero .wrap{grid-template-columns:1fr;gap:36px;padding-top:56px;padding-bottom:56px}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:28px}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav{display:none}
  .top .wrap{height:62px;gap:12px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  section{padding:52px 0}
  footer .cols{grid-template-columns:1fr}
  .hero h1{font-size:27px}
  table.tb{font-size:14px}
  table.tb th,table.tb td{padding:11px 12px}
  .case dl{grid-template-columns:1fr;gap:4px}
  .case dt{padding-top:10px}
}