:root{
  --ink:#101a26; --navy:#12304e; --navy-2:#0d2136; --gold:#b8873b; --gold-2:#d8ab63;
  --paper:#faf8f4; --line:#e6e0d5; --muted:#6b7886; --white:#fff;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 var(--sans);letter-spacing:.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1080px,calc(100% - 48px));margin:0 auto}

/* ---------- 顶栏 ---------- */
.top{position:sticky;top:0;z-index:20;background:rgba(250,248,244,.94);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.top .row{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:baseline;gap:10px}
.brand b{font:700 20px/1 var(--serif);letter-spacing:.14em;color:var(--navy)}
.brand small{font-size:12px;color:var(--muted);letter-spacing:.08em}
.nav{display:flex;align-items:center;gap:26px;font-size:14.5px}
.nav a{color:#33465c;padding:4px 0;border-bottom:1px solid transparent}
.nav a:hover{color:var(--navy);border-bottom-color:var(--gold)}
.lang{display:flex;gap:6px;font-size:13px;color:var(--muted)}
.lang a{padding:2px 8px;border:1px solid var(--line);border-radius:999px}
.lang a.on{background:var(--navy);border-color:var(--navy);color:#fff}

/* ---------- 首屏 ---------- */
.hero{background:radial-gradient(1200px 420px at 20% -10%,#1b3d61 0%,var(--navy-2) 55%,#0a1929 100%);color:#eef3f8;padding:76px 0 0}
.hero .kicker{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.22em;color:var(--gold-2);text-transform:uppercase}
.hero .kicker::before{content:"";width:26px;height:1px;background:var(--gold-2);display:inline-block}
.hero h1{font:700 clamp(30px,4.4vw,52px)/1.24 var(--sans);margin:18px 0 14px;letter-spacing:.02em}
.hero p.lead{max-width:640px;margin:0;color:#c9d6e4;font-size:16.5px}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 56px}
.btn{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;border-radius:2px;font-size:15px;transition:.18s}
.btn-a{background:var(--gold);color:#1b1207;font-weight:600}
.btn-a:hover{background:var(--gold-2)}
.btn-b{border:1px solid rgba(255,255,255,.28);color:#e8eef5}
.btn-b:hover{border-color:var(--gold-2);color:#fff}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.14)}
.stats div{padding:22px 8px 26px;border-right:1px solid rgba(255,255,255,.09)}
.stats div:last-child{border-right:0}
.stats b{display:block;font:600 30px/1.1 var(--serif);color:#fff;letter-spacing:.02em}
.stats span{display:block;margin-top:6px;font-size:12.5px;color:#9fb2c6;letter-spacing:.06em}

/* ---------- 区块 ---------- */
section.blk{padding:64px 0}
.page-hd + section.blk{padding-top:48px}
.blk-hd{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:26px}
.blk-hd h2{font:700 23px/1.35 var(--sans);margin:0;color:var(--navy);letter-spacing:.02em}
.blk-hd p{margin:0;color:var(--muted);font-size:14px}

.card{background:#fff;border:1px solid var(--line);border-radius:3px}
.case{padding:0;overflow:hidden}
.case-hd{padding:26px 28px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.case-hd .tag{font-size:12px;letter-spacing:.18em;color:var(--gold);text-transform:uppercase;white-space:nowrap;padding-top:6px}
.case-hd h3{font:700 20px/1.45 var(--sans);margin:6px 0 8px;color:var(--navy)}
.case-hd p{margin:0;color:var(--muted);font-size:14.5px;max-width:640px}
.case-bd{padding:22px 28px 26px}
.case-bd ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.case-bd li{position:relative;padding-left:18px;font-size:14.5px;color:#2b3c4f}
.case-bd li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;background:var(--gold);transform:rotate(45deg)}
.case-meta{display:grid;grid-template-columns:repeat(2,1fr);gap:0;margin:20px 0 0;border-top:1px solid var(--line)}
.case-meta div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.case-meta div:nth-child(odd){padding-right:26px;border-right:1px solid var(--line)}
.case-meta div:nth-child(even){padding-left:26px}
.case-meta b{color:var(--muted);font-weight:400}
.case-ft{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;flex-wrap:wrap}
.case-ft .note{color:var(--muted);font-size:12.8px}
.btn-dark{background:var(--navy);color:#fff;height:42px;padding:0 20px;border-radius:2px;font-size:14.5px}
.btn-dark:hover{background:#1a3d63}

.vs{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);background:#fff}
.vs .col{padding:22px 26px 24px}
.vs .col + .col{border-left:1px solid var(--line)}
.vs h4{margin:0 0 12px;font:700 15.5px/1.4 var(--sans);color:var(--navy)}
.vs .col.after h4{color:var(--gold)}
.vs ul{margin:0;padding:0;list-style:none;display:grid;gap:9px}
.vs li{position:relative;padding-left:16px;font-size:14px;color:#2b3c4f}
.vs li::before{content:"";position:absolute;left:0;top:.6em;width:5px;height:5px;background:#8fa1b5;transform:rotate(45deg)}
.vs .col.after li::before{background:var(--gold)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);background:#fff}
.steps div{padding:24px 22px 26px;border-right:1px solid var(--line)}
.steps div:last-child{border-right:0}
.steps em{font:600 22px/1 var(--serif);color:var(--gold);font-style:normal}
.steps h4{margin:12px 0 8px;font-size:15.5px;font-weight:700;color:var(--navy)}
.steps p{margin:0;font-size:13.8px;color:var(--muted);line-height:1.7}

.scope{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.scope .box{background:#fff;border:1px solid var(--line);padding:24px 24px 22px}
.scope .box h4{margin:0 0 8px;font:700 16.5px/1.45 var(--sans);color:var(--navy)}
.scope .box p{margin:0;color:var(--muted);font-size:14px}
.scope .no{margin:18px 0 0;font-size:13.5px;color:#8a7c66}

.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line)}
.table th,.table td{text-align:left;padding:13px 18px;border-bottom:1px solid var(--line);font-size:14.2px}
.table th{width:220px;font-weight:600;color:var(--navy);background:#fbfaf7}
.table tr:last-child td,.table tr:last-child th{border-bottom:0}
.table td{color:#2b3c4f}

.contact-band{background:var(--navy);color:#eaf1f8;padding:56px 0}
.contact-band h2{font:700 23px/1.35 var(--sans);margin:0 0 10px}
.contact-band p{margin:0 0 20px;color:#b9c9da;max-width:620px;font-size:15px}
.contact-band .mail{font:600 26px/1.2 var(--serif);color:var(--gold-2)}
.contact-band .note{margin-top:14px;font-size:13px;color:#8fa4ba}

footer.foot{border-top:1px solid var(--line);background:#fbfaf7;padding:26px 0;color:var(--muted);font-size:13px}
footer.foot .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- 内页 ---------- */
.page-hd{background:linear-gradient(180deg,#12304e,#0d2136);color:#eef3f8;padding:56px 0 46px}
.page-hd .kicker{font-size:12.5px;letter-spacing:.2em;color:var(--gold-2);text-transform:uppercase}
.page-hd h1{font:700 clamp(26px,3.4vw,38px)/1.32 var(--sans);margin:12px 0 10px}
.page-hd p{margin:0;color:#c3d2e2;max-width:680px;font-size:15.5px}
.prose{max-width:760px;margin:0 auto}
.prose h2{font:700 19.5px/1.45 var(--sans);color:var(--navy);margin:34px 0 10px}
.prose p{margin:0 0 14px;color:#2b3c4f;font-size:15.5px}
.prose ul{margin:0 0 16px;padding-left:20px;color:#2b3c4f;font-size:15px}
.prose li{margin:6px 0}

@media (max-width:900px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats div:nth-child(2){border-right:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps div:nth-child(2){border-right:0}
  .steps div:nth-child(1),.steps div:nth-child(2){border-bottom:1px solid var(--line)}
  .case-meta{grid-template-columns:1fr}
  .case-meta div:nth-child(odd){padding-right:0;border-right:0}
  .case-meta div:nth-child(even){padding-left:0}
}
@media (max-width:640px){
  .wrap{width:calc(100% - 32px)}
  .vs{grid-template-columns:1fr}
  .vs .col + .col{border-left:0;border-top:1px solid var(--line)}
  .hero h1{font-size:26px;line-height:1.34}
  .nav{display:none}
  .hero{padding-top:52px}
  .hero .cta{margin-bottom:40px}
  .scope{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .steps div{border-right:0;border-bottom:1px solid var(--line)}
  .steps div:last-child{border-bottom:0}
  .case-hd{flex-direction:column;padding:22px 20px 16px}
  .case-bd{padding:18px 20px 22px}
  section.blk{padding:44px 0}
}