:root{
  --navy:#0e2a47; --navy2:#16395f; --navy3:#1e4a78;
  --gold:#b8863b; --gold-l:#d9b06a;
  --ink:#1b2430; --ink2:#4b5768; --ink3:#7a8698;
  --line:#e2e7ee; --bg:#f6f7f9; --card:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.narrow{max-width:880px;margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand .mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(150deg,var(--navy),var(--navy3));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:.5px}
.brand .tx b{display:block;font-size:17px;font-weight:800;letter-spacing:1.5px;line-height:1.25}
.brand .tx span{display:block;font-size:10.5px;color:var(--ink3);letter-spacing:2.2px;text-transform:uppercase}
nav{margin-left:auto;display:flex;align-items:center;gap:2px}
nav a{padding:9px 13px;font-size:14.5px;color:var(--ink2);border-radius:8px;white-space:nowrap;transition:.18s}
nav a:hover{color:var(--navy);background:#f0f3f8}
nav a.on{color:var(--navy);font-weight:700;background:#eef3f9}
.nav-cta{margin-left:10px;padding:9px 18px!important;background:var(--navy);color:#fff!important;border-radius:999px;font-weight:700}
.nav-cta:hover{background:var(--navy3)!important}
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px}
.burger i{display:block;width:17px;height:1.8px;background:var(--navy);border-radius:2px;transition:.2s}
.burger.open i:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.burger.open i:nth-child(2){opacity:0}
.burger.open i:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}
@media(max-width:980px){
  nav{position:fixed;inset:68px 0 auto;background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:10px 14px 18px;border-bottom:1px solid var(--line);display:none;max-height:calc(100vh - 68px);overflow:auto}
  nav.open{display:flex}
  nav a{padding:13px 12px;border-radius:10px;font-size:15.5px}
  .nav-cta{margin:8px 0 0;text-align:center}
  .burger{display:flex}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(150deg,rgba(9,33,60,.95) 0%,rgba(17,56,96,.86) 55%,rgba(24,78,127,.78) 100%),
    url("../photos/banner.jpg");background-size:cover;background-position:center 44%}
.hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(700px 340px at 82% 12%,rgba(216,176,106,.22),transparent 62%),
             radial-gradient(520px 300px at 8% 92%,rgba(120,180,255,.16),transparent 66%)}
.hero .wrap{position:relative;z-index:2;padding:88px 22px 78px}
.hero .kick{display:inline-block;font-size:12.5px;letter-spacing:2.6px;color:var(--gold-l);border:1px solid rgba(217,176,106,.5);
  border-radius:999px;padding:5px 15px;margin-bottom:22px}
.hero h1{font-size:44px;line-height:1.3;font-weight:800;letter-spacing:.5px;max-width:15em}
.hero h1 em{font-style:normal;color:var(--gold-l)}
.hero .sub{margin-top:20px;font-size:17.5px;line-height:1.85;color:#ccdaeb;max-width:44em}
.hero .btns{margin-top:34px;display:flex;gap:13px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 28px;border-radius:999px;font-size:15.5px;font-weight:700;transition:.2s;cursor:pointer}
.btn.pri{background:var(--gold);color:#241a06}
.btn.pri:hover{background:var(--gold-l)}
.btn.gho{border:1px solid rgba(255,255,255,.42);color:#fff}
.btn.gho:hover{background:rgba(255,255,255,.1)}
.hero .metrics{margin-top:52px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.16);
  border-radius:14px;overflow:hidden}
.hero .metrics div{background:rgba(9,32,58,.55);padding:20px 18px}
.hero .metrics b{display:block;font-size:27px;font-weight:800;color:#fff;letter-spacing:.5px}
.hero .metrics span{display:block;font-size:13px;color:#b9cbe1;margin-top:4px}

/* ---------- 通用区块 ---------- */
section{padding:74px 0}
section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:42px}
.sec-head .k{font-size:12.5px;letter-spacing:2.4px;color:var(--gold);font-weight:800;margin-bottom:12px}
.sec-head h2{font-size:31px;line-height:1.4;font-weight:800;letter-spacing:.3px}
.sec-head p{margin-top:14px;font-size:16px;color:var(--ink2)}
.sec-head.cen{margin-left:auto;margin-right:auto;text-align:center}
h3{font-size:20px;font-weight:800;letter-spacing:.2px}
h4{font-size:15.5px;font-weight:800}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 24px;transition:.22s}
.card:hover{box-shadow:0 10px 28px rgba(14,42,71,.08);transform:translateY(-3px)}
.card h3{margin-bottom:10px}
.card p{font-size:14.8px;color:var(--ink2)}
.card ul{margin:12px 0 0 18px;font-size:14.5px;color:var(--ink2)}
.card li{margin-bottom:6px}

/* M-O-S-D */
.mosd{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.mosd .m{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 22px;overflow:hidden;transition:.22s}
.mosd .m:hover{box-shadow:0 12px 30px rgba(14,42,71,.09);transform:translateY(-3px)}
.mosd .m .bg{position:absolute;right:-12px;top:-24px;font-size:92px;font-weight:900;color:#f1f4f9;line-height:1;letter-spacing:-4px}
.mosd .m .lt{position:relative;display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:1.6px;color:var(--gold);font-weight:800}
.mosd .m h3{position:relative;margin:8px 0 4px;font-size:18.5px}
.mosd .m .en{position:relative;font-size:11.5px;letter-spacing:1.4px;color:var(--ink3);text-transform:uppercase}
.mosd .m p{position:relative;font-size:14.3px;color:var(--ink2);margin-top:12px}
.mosd .m ul{position:relative;margin:12px 0 0 17px;font-size:13.8px;color:var(--ink2)}
.mosd .m li{margin-bottom:5px}
.more{display:inline-block;margin-top:16px;font-size:13.8px;font-weight:700;color:var(--navy3);position:relative}
.more::after{content:" →"}

/* 客户 */
.clients{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.clients div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px;text-align:center}
.clients b{display:block;font-size:16.5px;color:var(--navy)}
.clients span{display:block;font-size:12.8px;color:var(--ink3);margin-top:7px;line-height:1.6}

/* 案例 */
.case{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px 28px 24px;margin-bottom:20px}
.case-hd{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;padding-bottom:14px;border-bottom:2px solid #eef2f7}
.case-hd h3{font-size:21px}
.flag{font-size:11.5px;font-weight:800;letter-spacing:.6px;color:#8a5d10;background:#fdf6e8;border:1px solid #f0dfbb;border-radius:999px;padding:2px 11px}
.flag.p{color:#1d4b8f;background:#f0f5ff;border-color:#d6e2fb}
.tags{margin-left:auto;display:flex;gap:7px;flex-wrap:wrap}
.tags span{font-size:11.5px;color:var(--ink2);background:#f2f4f8;border-radius:999px;padding:2px 11px}
.case-body{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:18px}
.case-body .blk{background:#fafbfd;border:1px solid #eef1f6;border-radius:12px;padding:16px 18px}
.case-body .blk h4{font-size:13.5px;color:var(--gold);letter-spacing:1.4px;margin-bottom:8px}
.case-body .blk p{font-size:14.3px;color:var(--ink2)}
.case-res{margin-top:18px;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.case-res .r{border-radius:12px;padding:16px 18px}
.case-res .r h4{font-size:14.5px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.case-res .r h4::before{content:"";width:4px;height:16px;border-radius:2px;background:currentColor}
.case-res .biz{background:#f2f7ff;color:#1b4278}
.case-res .gov{background:#f2fbf5;color:#16603c}
.case-res .r ul{margin-left:17px;font-size:14.3px}
.case-res .r li{margin-bottom:7px;color:var(--ink2)}
.case-foot{margin-top:14px;font-size:12.5px;color:var(--ink3);display:flex;gap:16px;flex-wrap:wrap}
.switch{display:inline-flex;background:#eef1f6;border-radius:999px;padding:4px;gap:2px;margin-bottom:26px}
.switch button{border:0;background:transparent;padding:9px 20px;border-radius:999px;font-size:14px;font-weight:700;color:var(--ink2);cursor:pointer;font-family:inherit}
.switch button.on{background:#fff;color:var(--navy);box-shadow:0 1px 5px rgba(14,42,71,.12)}
.hide-biz .case[data-has="gov"]{display:block}
.view-biz .case:not(.has-biz){display:none}
.view-gov .case:not(.has-gov){display:none}
.view-biz .case-res .gov{display:none}
.view-gov .case-res .biz{display:none}
.view-biz .case-res,.view-gov .case-res{grid-template-columns:1fr}
.view-biz .case-res .biz,.view-gov .case-res .gov{max-width:none}

/* 合伙人 */
.partners{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pt{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.22s;display:flex;flex-direction:column}
.pt:hover{box-shadow:0 12px 30px rgba(14,42,71,.09);transform:translateY(-3px)}
.pt .ph{aspect-ratio:1/1;background:#eef1f6;overflow:hidden}
.pt .ph img{width:100%;height:100%;object-fit:cover}
.pt .tx{padding:16px 16px 18px;flex:1;display:flex;flex-direction:column}
.pt .tx b{font-size:16.5px;letter-spacing:.5px}
.pt .tx p{margin-top:8px;font-size:13.2px;line-height:1.72;color:var(--ink2)}
.pt .tx .no{margin-top:auto;padding-top:10px;font-size:11.5px;color:#aab3c2;letter-spacing:1px}

/* 通用列表/表格 */
.kv{background:#fff;border:1px solid var(--line);border-radius:16px;padding:4px 24px}
.kv .row{display:grid;grid-template-columns:190px 1fr;gap:18px;padding:15px 0;border-bottom:1px dashed #e8ecf3;font-size:14.8px}
.kv .row:last-child{border-bottom:0}
.kv .row b{color:var(--navy);font-weight:700}
.kv .row span{color:var(--ink2)}
.quote{background:#fff;border-left:4px solid var(--gold);border-radius:0 14px 14px 0;padding:22px 26px;font-size:16px;color:var(--ink2);line-height:1.9}
.note{background:#fdf9f0;border:1px solid #f0e2c6;border-radius:14px;padding:18px 22px;font-size:14.3px;color:#7a5a12}
.note b{color:#8a5d10}
.timeline{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 30px}
.timeline .tl{border-left:2px solid #e6ebf2;padding:0 0 22px 24px;position:relative}
.timeline .tl:last-child{padding-bottom:0}
.timeline .tl::before{content:"";position:absolute;left:-7px;top:7px;width:12px;height:12px;border-radius:50%;background:#fff;border:3px solid var(--gold)}
.timeline .tl b{display:block;font-size:13.5px;color:var(--gold);letter-spacing:1.2px;margin-bottom:5px}
.timeline .tl p{font-size:15px;color:var(--ink2)}

/* CTA */
.cta{background:linear-gradient(140deg,#0c2a49,#1b5285);border-radius:20px;padding:52px 44px;color:#fff;
  display:flex;align-items:center;gap:30px;flex-wrap:wrap;justify-content:space-between}
.cta h3{font-size:25px;margin-bottom:8px}
.cta p{color:#c4d4e7;font-size:15.5px}

/* 页头 */
.pagehead{padding:66px 0 58px;color:#fff;
  background-image:linear-gradient(140deg,rgba(9,33,60,.93),rgba(21,66,113,.85)),url("../photos/banner.jpg");
  background-size:cover;background-position:center 44%}
.pagehead .k{font-size:12.5px;letter-spacing:2.4px;color:var(--gold-l);font-weight:800;margin-bottom:12px}
.pagehead h1{font-size:34px;font-weight:800;letter-spacing:.4px}
.pagehead p{margin-top:14px;color:#d3e0ee;font-size:16px;max-width:46em}

/* 照片 */
.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.strip figure{margin:0}
.strip img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;background:#e9edf3}
.strip figcaption{font-size:12.8px;color:var(--ink3);padding:9px 2px 0;line-height:1.6}
.thumb{border-radius:12px;overflow:hidden;background:#eef1f6;margin-bottom:14px}
.thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.artfig{margin:26px 0}
.artfig img{width:100%;border-radius:14px}
.artgrid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0 0 8px}
.artgrid img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px}
.artgrid.one{grid-template-columns:1fr}

/* footer */
footer{background:#0a1c31;color:#93a6bd;padding:56px 0 30px;font-size:14px;margin-top:0}
footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:30px}
footer h5{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.6px}
footer p,footer li{font-size:13.6px;line-height:1.95}
footer ul{list-style:none}
footer a:hover{color:var(--gold-l)}
footer .bot{margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;gap:18px;flex-wrap:wrap;font-size:12.8px;color:#7b8ea6}

@media(max-width:1000px){
  .hero h1{font-size:34px}
  .hero .metrics{grid-template-columns:1fr 1fr}
  .mosd,.grid4,.partners,.clients{grid-template-columns:1fr 1fr}
  .grid3{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  body{font-size:15.5px}
  section{padding:52px 0}
  .hero .wrap{padding:60px 20px 54px}
  .hero h1{font-size:27px}
  .sec-head h2{font-size:24px}
  .pagehead h1{font-size:26px}
  .grid2,.grid3,.grid4,.mosd,.partners,.clients,.case-body,.case-res,.strip,.artgrid{grid-template-columns:1fr}
  .strip figure:nth-child(n+4){display:none}
  .kv .row{grid-template-columns:1fr;gap:4px}
  .cta{padding:34px 24px}
  footer .cols{grid-template-columns:1fr}
}