/* ============================================================
   中京信达（zjxd.aiepco.com）· 设计系统 v1
   色板锁定：2026-10-15（Jet 确认 A 案再暗一点点）
   品牌色取自 logo：冷银 #B8CBDD；底色按 logo 色相提亮并加一丝丝光泽
   ============================================================ */
:root{
  --ink:#2A5178; --slate:#31618F; --slate2:#3E7AB4;
  --silver:#CBDAE8; --silver-dim:#A3BACF;
  --copper:#D2A055;                 /* 唯一强调色：CTA / 关键数字 / 细线 */
  --paper:#EEF4FA; --white:#fff; --line:#DBE7F3;
  --card-bg:linear-gradient(180deg,#FFFFFF 0%,#FDFBF7 58%,#F9F6F0 100%);
  --card-line:#E7DFD3;
  --card-3d:
    inset 0 1px 0 rgba(255,255,255,.98),
    0 1px 0 rgba(255,255,255,.85),
    0 2px 0 rgba(203,216,229,.55),
    0 10px 22px rgba(38,80,124,.13),
    0 3px 8px rgba(38,80,124,.07);
  --text:#16202C; --sub:#57697C;
  --gloss:linear-gradient(115deg,rgba(255,255,255,.10) 0%,rgba(255,255,255,0) 26%,rgba(255,255,255,.045) 52%,rgba(255,255,255,0) 76%);
  --cn:"Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --en:Inter,"Helvetica Neue",Helvetica,Arial,sans-serif;
  --r-card:12px; --r-btn:8px;
  --wrap:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--white);color:var(--text);font-family:var(--cn);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sec{padding:72px 0}
.sec.paper{background:var(--paper)}
.sec.tight{padding:56px 0}
.eyebrow{font-family:var(--en);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--copper);margin-bottom:12px}
h1{font-size:40px;line-height:1.25;font-weight:600;letter-spacing:.01em}
h2{font-size:28px;font-weight:600;line-height:1.35}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
.lead{margin-top:12px;color:var(--sub);font-size:15px;max-width:820px}
.muted{color:var(--sub);font-size:13px}
.center{text-align:center}
.mt-s{margin-top:14px}.mt-m{margin-top:26px}.mt-l{margin-top:40px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:linear-gradient(180deg,#376AA3 0%,#31618F 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.20), 0 2px 16px rgba(49,97,143,.18);border-bottom:1px solid rgba(255,255,255,.13)}
.nav{display:flex;align-items:center;gap:28px;height:76px;position:relative}
.nav::after{content:"";position:absolute;left:0;right:0;top:0;height:34px;background:var(--gloss);pointer-events:none;opacity:.5}
.brand{display:flex;align-items:center}
.brand img{height:54px;width:auto;filter:drop-shadow(0 1px 3px rgba(14,40,70,.38))}
nav{margin-left:auto;display:flex;align-items:center;gap:24px;font-size:15px;color:#D6DEE8}
nav a{padding:6px 0;border-bottom:1px solid transparent}
nav a:hover{color:#fff;border-bottom-color:var(--silver)}
nav a.on{color:#fff;border-bottom-color:var(--copper)}
.nav-right{display:flex;align-items:center;gap:18px;margin-left:8px}
.lang{font-family:var(--en);font-size:12px;letter-spacing:.06em;color:var(--silver-dim);display:flex;gap:8px}
.lang b{color:#fff;font-weight:600}
.tel{font-family:var(--en);font-size:14px;color:#E4EAF1;font-variant-numeric:tabular-nums}
.burger{display:none;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.35);color:#fff;border-radius:8px;width:42px;height:38px;font-size:16px}
.cta-sm{background:var(--copper);color:#1E242E;font-size:14px;font-weight:600;padding:10px 18px;border-radius:var(--r-btn)}

/* ---------- buttons ---------- */
.btn{height:50px;padding:0 26px;border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;cursor:pointer;border:0;font-family:inherit}
.btn-p{background:var(--copper);color:#1E242E}
.btn-s{border:1px solid rgba(255,255,255,.5);color:#EAF0F6}
.btn-o{border:1px solid var(--slate);color:var(--slate);background:transparent}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- hero（首页） ---------- */
.hero{background:var(--slate);color:#fff;position:relative;overflow:hidden}
.hero .sky{position:absolute;inset:0;background:
   linear-gradient(180deg, rgba(255,255,255,.16) 0%, rgba(255,255,255,0) 36%),
   var(--gloss),
   radial-gradient(1200px 460px at 86% 6%, rgba(255,255,255,.13), transparent 58%),
   radial-gradient(900px 420px at 6% 96%, rgba(210,160,85,.12), transparent 62%),
   linear-gradient(180deg,#3E7AB4 0%, #376AA3 48%, #31618F 100%)}
.hero .skyline{position:absolute;left:0;right:0;bottom:0;height:150px;opacity:.34}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:76px 0 64px}
.hero h1{font-size:44px}
.hero h1 em{font-style:normal;color:var(--copper)}
.hero p.lead{color:#C7D2DE;max-width:520px}
.hero .btns{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.hero .tagline{margin-top:26px;display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:var(--silver-dim);font-family:var(--en);letter-spacing:.04em}
.eyebrow.on-dark{color:var(--silver-dim)}

/* 内页 banner */
.banner{position:relative;overflow:hidden;background:linear-gradient(180deg,#376AA3 0%,#31618F 100%);color:#fff}
.banner::after{content:"";position:absolute;inset:0;background:var(--gloss);opacity:.55;pointer-events:none}
.banner .wrap{position:relative;padding:56px 24px 52px}
.banner h1{font-size:34px}
.banner .lead{color:#C7D2DE;margin-top:10px}
.crumb{font-size:13px;color:var(--silver-dim);margin-bottom:14px;font-family:var(--en);letter-spacing:.04em}
.crumb a:hover{color:#fff}
.crumb span{opacity:.6;margin:0 8px}

/* ---------- 版图（hero 卡） ---------- */
.map{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,.05));border:1px solid rgba(255,255,255,.30);border-radius:16px;padding:18px;box-shadow:0 12px 32px rgba(23,60,100,.18), inset 0 1px 0 rgba(255,255,255,.35)}
.map svg{width:100%;height:auto;display:block}
.map .cap{margin-top:10px;font-size:12px;color:var(--silver-dim);display:flex;justify-content:space-between;font-family:var(--en);letter-spacing:.06em}

/* ---------- 卡片族 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:44px}
.metric{background:var(--card-bg);border:1px solid var(--card-line);border-radius:var(--r-card);padding:26px 22px 24px;box-shadow:var(--card-3d);position:relative}
.metric::before{content:"";position:absolute;left:14px;right:14px;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent)}
.metric .n{font-family:var(--en);font-size:38px;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.metric .n i{font-style:normal;font-size:15px;font-weight:500;color:var(--sub);margin-left:6px}
.metric .rule{width:34px;height:2px;background:var(--copper);margin:14px 0 12px}
.metric span{font-size:13px;color:var(--sub)}

.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:38px}
.cards2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:34px}
.cards4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px}
.card{background:var(--card-bg);border:1px solid var(--card-line);border-radius:var(--r-card);padding:30px 26px 26px;box-shadow:var(--card-3d);display:flex;flex-direction:column;position:relative}
.card::before{content:"";position:absolute;left:16px;right:16px;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent)}
.card .ic{width:46px;height:46px;border-radius:10px;background:var(--slate);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.card .ic svg{width:22px;height:22px;stroke:var(--silver);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.card .en{font-family:var(--en);font-size:11px;letter-spacing:.14em;color:var(--silver-dim);margin-top:4px}
.card p{margin-top:14px;font-size:14px;color:var(--sub);flex:1}
.card .more{margin-top:20px;font-size:14px;font-weight:600;color:var(--copper)}
.card.flat{box-shadow:none;background:#fff}

/* 案例卡 */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:38px}
.case{border:1px solid var(--card-line);border-radius:var(--r-card);overflow:hidden;background:var(--card-bg);box-shadow:var(--card-3d);display:flex;flex-direction:column}
.case .thumb{height:132px;background:linear-gradient(160deg,var(--slate) 0%,var(--slate2) 100%);position:relative}
.case .thumb svg{position:absolute;inset:0;width:100%;height:100%;opacity:.34}
.case .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;position:relative}
.case h4{font-size:16px;line-height:1.5}
.case dl{margin-top:14px;font-size:13px;display:grid;grid-template-columns:auto 1fr;gap:6px 10px;color:var(--sub)}
.case dd{color:var(--text)}
.tag{align-self:flex-start;font-size:12px;color:var(--slate);background:rgba(49,97,143,.10);border:1px solid rgba(49,97,143,.14);border-radius:999px;padding:3px 10px;margin-bottom:12px}

/* 筛选 */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.chip{cursor:pointer;font-size:13px;padding:8px 16px;border-radius:999px;border:1px solid var(--card-line);background:var(--card-bg);color:var(--sub);box-shadow:0 2px 6px rgba(38,80,124,.07);user-select:none}
.chip.on{background:var(--slate);border-color:var(--slate);color:#fff}

/* 伙伴 */
.partners{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.partner{background:var(--card-bg);border:1px solid var(--card-line);border-radius:10px;height:64px;display:flex;align-items:center;justify-content:center;font-size:14px;box-shadow:inset 0 1px 0 rgba(255,255,255,.95), 0 2px 0 rgba(203,216,229,.45), 0 6px 14px rgba(38,80,124,.10)}
.partner.cn{background:var(--slate);border-color:var(--slate);color:#EAF0F6;box-shadow:0 6px 16px rgba(49,97,143,.28)}
.pgroup{margin-top:26px;font-size:13px;color:var(--sub)}

/* 团队 */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.member .ph{height:200px;border-radius:var(--r-card) var(--r-card) 0 0;background:linear-gradient(160deg,var(--slate) 0%,var(--slate2) 100%);display:flex;align-items:center;justify-content:center;font-family:var(--en);font-size:56px;font-weight:600;color:rgba(255,255,255,.9);letter-spacing:.04em}
.member .bd{padding:24px 22px 26px}
.member .nm{font-size:19px;font-weight:600}
.member .nm small{font-family:var(--en);font-size:12px;color:var(--silver-dim);letter-spacing:.1em;display:block;margin-top:2px}
.member .ro{color:var(--copper);font-size:13px;font-weight:600;margin-top:8px}
.member .bio{margin-top:12px;font-size:13.5px;color:var(--sub)}

/* 业务详情 */
.detail{display:grid;grid-template-columns:220px 1fr;gap:44px;align-items:start}
.side{position:sticky;top:100px}
.side a{display:block;padding:11px 14px;border-radius:8px;font-size:14px;color:var(--sub);border:1px solid transparent}
.side a:hover{background:#fff;border-color:var(--line);color:var(--text)}
.side a.on{background:var(--slate);color:#fff}
.side .t{font-size:12px;letter-spacing:.1em;color:var(--silver-dim);font-family:var(--en);margin:0 0 10px 14px}
.blk{padding:30px 0;border-bottom:1px solid var(--line)}
.blk:first-child{padding-top:0}
.blk:last-child{border-bottom:0}
.blk h3{margin-bottom:14px}
.blk h3::before{content:"";display:inline-block;width:18px;height:2px;background:var(--copper);vertical-align:middle;margin-right:10px}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:18px 34px}
.li{font-size:14.5px;color:var(--sub);padding-left:18px;position:relative;margin-top:8px}
.li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--silver-dim)}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:18px}
.step{background:var(--card-bg);border:1px solid var(--card-line);border-radius:10px;padding:18px;box-shadow:var(--card-3d);position:relative}
.step b{display:block;font-family:var(--en);font-size:12px;color:var(--copper);letter-spacing:.1em}
.step span{display:block;font-size:14px;font-weight:600;margin-top:6px}
.step p{font-size:12.5px;color:var(--sub);margin-top:6px}
.flow{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.flow span{font-size:13px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px;color:var(--sub)}
.flow span::after{content:"→";margin-left:10px;color:var(--silver-dim)}
.flow span:last-child::after{content:""}

/* 表格 */
.tbl{width:100%;border-collapse:separate;border-spacing:0;margin-top:26px;background:var(--card-bg);border:1px solid var(--card-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--card-3d);font-size:14px}
.tbl th{background:#fff;text-align:left;font-size:13px;color:var(--sub);font-weight:600;padding:14px 16px;border-bottom:1px solid var(--line)}
.tbl td{padding:14px 16px;border-bottom:1px solid #F0F3F7}
.tbl tr:last-child td{border-bottom:0}
.tbl td b{font-weight:600}

/* 联系 */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-top:34px}
.info{display:grid;gap:20px}
.info .row{display:flex;gap:14px;font-size:15px}
.info .k{width:80px;color:var(--sub);flex:none}
.info .v{font-weight:600}
.info .v small{display:block;font-weight:400;color:var(--sub);font-size:13px;margin-top:4px}
form{background:var(--card-bg);border:1px solid var(--card-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--card-3d);display:grid;gap:14px;position:relative}
form::before{content:"";position:absolute;left:16px;right:16px;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent)}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
input,select,textarea{width:100%;border:1px solid #E4EAF1;border-radius:8px;padding:12px 14px;font-size:14px;font-family:inherit;color:var(--text);background:#F9FBFD;box-shadow:inset 0 1px 2px rgba(38,80,124,.06)}
textarea{min-height:96px;resize:vertical}
label{font-size:13px;color:var(--sub);display:block;margin-bottom:6px}
form .btn{width:100%}
.consent{font-size:12px;color:var(--sub)}
.mapbox{margin-top:20px;height:220px;border-radius:var(--r-card);border:1px solid var(--card-line);background:linear-gradient(160deg,#E9F1F9,#F7FAFD);display:flex;align-items:center;justify-content:center;color:var(--sub);font-size:13px;box-shadow:inset 0 1px 0 rgba(255,255,255,.9)}

/* 富文本（合规页等） */
.doc{max-width:900px;font-size:15px;color:#26313D}
.doc h2{font-size:22px;margin:34px 0 12px}
.doc h2:first-child{margin-top:0}
.doc p{margin-top:10px;color:var(--sub)}
.doc .li{margin-top:8px}

/* 页脚 */
footer{background:linear-gradient(180deg,#376AA3 0%,#2A5178 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.16);color:#D3E1EF;font-size:13px;padding:52px 0 30px;position:relative}
footer::before{content:"";position:absolute;inset:0;background:var(--gloss);opacity:.45;pointer-events:none}
footer .wrap{position:relative}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
footer h5{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px}
footer a{display:block;padding:4px 0;color:#D8E6F3}
footer a:hover{color:#fff}
footer p{line-height:1.9}
.copy{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.22);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#BBD2E6}
.copy a{display:inline;color:#D8E6F3}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:56px 0 48px}
  .hero h1{font-size:34px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .cards3,.cards4,.cases,.team{grid-template-columns:1fr 1fr}
  .detail{grid-template-columns:1fr;gap:26px}
  .side{position:static;display:flex;gap:8px;overflow:auto;padding-bottom:6px}
  .side .t{display:none}
  .side a{white-space:nowrap;border-color:var(--line);background:#fff}
  .steps{grid-template-columns:1fr 1fr}
  .contact{grid-template-columns:1fr}
  .partners{grid-template-columns:repeat(3,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
  .cols2{grid-template-columns:1fr}
  h1{font-size:30px}
}
@media (max-width:640px){
  .sec{padding:52px 0}
  .wrap{padding:0 18px}
  nav,.nav-right .tel,.lang{display:none}
  .nav{height:64px}
  .brand img{height:38px}
  .burger{display:block}
  .hero h1{font-size:28px}
  .banner .wrap{padding:40px 18px 36px}
  .banner h1{font-size:26px}
  .metrics{grid-template-columns:1fr 1fr;gap:14px}
  .metric{padding:18px 16px}
  .metric .n{font-size:30px}
  .cards3,.cards4,.cases,.team,.cards2{grid-template-columns:1fr}
  .partners{grid-template-columns:1fr 1fr}
  .f2{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  h2{font-size:23px}
  .tbl{font-size:13px}
  .tbl th,.tbl td{padding:11px 12px}
}