/* ============================================================
   海豚领航 DolphinPilot — 官网样式 V1
   品牌色：深海军蓝 #0d3b66 / 商务蓝 #0f4c81 / 点缀金 #c9a25c
   ============================================================ */
:root{
  --navy:#0d3b66; --blue:#0f4c81; --blue-deep:#092c4d;
  --gold:#c9a25c; --ink:#1c2733; --sub:#5a6a7e;
  --line:#e3e8ef; --bg:#f7f9fc; --card:#ffffff; --blue-soft:#eaf2fa;
  --shadow:0 6px 24px rgba(13,59,102,.08);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);line-height:1.8;font-size:16px;background:#fff;}
a{color:var(--blue);text-decoration:none;}
img{max-width:100%;display:block;}
ul{list-style:none;}

/* ---------- 布局 ---------- */
.wrap{max-width:1120px;margin:0 auto;padding:0 28px;}
section{padding:84px 0;}
.sec-alt{background:var(--bg);}
.sec-head{max-width:760px;margin:0 auto 52px;text-align:center;}
.sec-head .kicker{display:inline-block;font-size:13px;letter-spacing:4px;color:var(--gold);font-weight:600;margin-bottom:10px;text-transform:uppercase;}
.sec-head h2{font-size:32px;font-weight:700;color:var(--ink);letter-spacing:1px;}
.sec-head p{color:var(--sub);margin-top:14px;font-size:15.5px;}

/* ---------- 头部导航 ---------- */
header.site{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand .mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--navy));display:flex;align-items:center;justify-content:center;}
.brand .mark-img{width:42px;height:42px;object-fit:contain;display:block;flex:0 0 42px;}
.foot-brand .fimg{width:56px;height:56px;object-fit:contain;display:block;margin-bottom:12px;}
.brand .name{font-size:19px;font-weight:700;color:var(--navy);letter-spacing:1px;}
.brand .name small{display:block;font-size:10px;letter-spacing:2.5px;color:var(--sub);font-weight:500;line-height:1.2;}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{color:var(--ink);font-size:15px;font-weight:500;position:relative;padding:4px 0;}
.nav-links a:hover{color:var(--blue);}
.nav-links a.active{color:var(--blue);}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2.5px;background:var(--gold);border-radius:2px;}
.nav-cta{background:var(--blue);color:#fff !important;padding:9px 22px !important;border-radius:8px;font-size:14px !important;}
.nav-cta:hover{background:var(--navy);}
.nav-cta.active::after{display:none;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--blue) 55%,#12558f 100%);color:#fff;padding:110px 0 120px;position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;right:-140px;top:-140px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(201,162,92,.18),transparent 65%);}
.hero::before{content:"";position:absolute;left:-120px;bottom:-180px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.07),transparent 60%);}
.hero-in{position:relative;z-index:2;max-width:820px;}
.hero .tagline{display:inline-block;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:5px 18px;font-size:13.5px;letter-spacing:3px;color:rgba(255,255,255,.9);margin-bottom:26px;background:rgba(255,255,255,.07);}
.hero h1{font-size:46px;font-weight:700;letter-spacing:2px;line-height:1.35;}
.hero h1 .gold{color:var(--gold);}
.hero .en{margin-top:14px;font-size:15px;color:rgba(255,255,255,.65);letter-spacing:1px;font-style:italic;}
.hero p.lead{margin-top:22px;font-size:17px;color:rgba(255,255,255,.88);max-width:640px;}
.hero-btns{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap;}
.btn{display:inline-block;padding:13px 34px;border-radius:10px;font-size:15.5px;font-weight:600;letter-spacing:1px;transition:.2s;}
.btn-main{background:var(--gold);color:#fff;}
.btn-main:hover{background:#b8914c;transform:translateY(-1px);}
.btn-ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);}
.btn-blue{background:var(--blue);color:#fff;}
.btn-blue:hover{background:var(--navy);transform:translateY(-1px);}

/* ---------- 数字条 ---------- */
.stats{background:#fff;margin-top:-58px;position:relative;z-index:5;border-radius:14px;box-shadow:var(--shadow);padding:36px 20px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.stat{text-align:center;padding:8px 10px;border-right:1px solid var(--line);}
.stat:last-child{border-right:none;}
.stat b{display:block;font-size:34px;color:var(--blue);font-weight:700;line-height:1.2;}
.stat span{font-size:13.5px;color:var(--sub);}

/* ---------- 引擎 ---------- */
.engines{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.engine{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:34px 28px;transition:.25s;position:relative;overflow:hidden;}
.engine:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c9dcf0;}
.engine .no{position:absolute;right:18px;top:10px;font-size:52px;font-weight:800;color:var(--blue-soft);line-height:1;}
.engine h3{font-size:19px;color:var(--navy);margin-bottom:12px;font-weight:700;}
.engine p{font-size:14.5px;color:var(--sub);}

/* ---------- 板块卡片 ---------- */
.blocks{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.block{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:14px;padding:34px 30px;transition:.25s;display:flex;flex-direction:column;}
.block:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.block .ico{width:52px;height:52px;border-radius:12px;background:var(--blue-soft);display:flex;align-items:center;justify-content:center;margin-bottom:20px;}
.block .ico svg{width:28px;height:28px;stroke:var(--blue);}
.block h3{font-size:19px;color:var(--ink);margin-bottom:12px;font-weight:700;}
.block p{font-size:14.5px;color:var(--sub);flex:1;}
.block .more{margin-top:18px;color:var(--blue);font-weight:600;font-size:14.5px;}
.block .more:hover{color:var(--navy);}

/* ---------- LOGO 墙 ---------- */
.logos{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;}
.logo-chip{background:#fff;border:1px solid var(--line);border-radius:10px;height:86px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;filter:grayscale(1);opacity:.9;transition:.2s;}
.logo-chip:hover{filter:none;opacity:1;border-color:#c9dcf0;}
.logo-chip b{font-size:16px;color:var(--ink);font-weight:700;letter-spacing:1px;}
.logo-chip small{font-size:10px;color:var(--sub);letter-spacing:1px;}
.logo-chip.ph{border-style:dashed;background:transparent;}
.logo-chip.ph b{color:#aebbc9;font-weight:500;font-size:13px;}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy),var(--blue));border-radius:16px;padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;flex-wrap:wrap;}
.cta-band h3{font-size:26px;font-weight:700;letter-spacing:1px;}
.cta-band p{margin-top:8px;color:rgba(255,255,255,.8);font-size:15px;}

/* ---------- 通用内容卡/表格 ---------- */
.plain-list li{padding:12px 0 12px 30px;position:relative;border-bottom:1px dashed var(--line);color:var(--ink);font-size:15px;}
.plain-list li::before{content:"";position:absolute;left:6px;top:21px;width:8px;height:8px;border-radius:50%;background:var(--gold);}
.layer{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:34px 32px;margin-bottom:22px;display:grid;grid-template-columns:220px 1fr;gap:26px;}
.layer .lv{font-size:13px;color:var(--gold);letter-spacing:2px;font-weight:700;}
.layer h3{font-size:20px;color:var(--navy);margin-top:6px;}
.layer .lv-tag{display:inline-block;margin-top:14px;background:var(--blue-soft);color:var(--blue);font-size:12.5px;padding:3px 12px;border-radius:999px;}
.layer .body p.desc{color:var(--sub);font-size:14.5px;margin-bottom:12px;}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:6px 14px;font-size:13.5px;color:var(--ink);}

/* ---------- 案例卡 ---------- */
.case{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:34px 30px;transition:.25s;}
.case:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.case .cat{display:inline-block;font-size:12px;color:var(--blue);background:var(--blue-soft);padding:3px 12px;border-radius:999px;margin-bottom:14px;font-weight:600;}
.case h3{font-size:18px;color:var(--ink);margin-bottom:10px;}
.case p{font-size:14px;color:var(--sub);}
.case .kpi{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);display:flex;gap:26px;flex-wrap:wrap;}
.case .kpi div b{display:block;font-size:20px;color:var(--blue);}
.case .kpi div span{font-size:12px;color:var(--sub);}
.case .kpi div b em{font-style:normal;color:#aebbc9;font-size:13px;}

/* ---------- 洞察卡 ---------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;display:flex;flex-direction:column;}
.post:hover{box-shadow(var(--shadow));transform:translateY(-4px);box-shadow:var(--shadow);}
.post .cover{height:120px;background:linear-gradient(135deg,var(--navy),var(--blue));display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.85);font-size:13px;letter-spacing:3px;}
.post .cover.gold{background:linear-gradient(135deg,#8a6a2f,var(--gold));}
.post .bd{padding:24px 24px 26px;flex:1;display:flex;flex-direction:column;}
.post .meta{font-size:12.5px;color:var(--sub);margin-bottom:10px;display:flex;gap:10px;align-items:center;}
.post h3{font-size:16.5px;color:var(--ink);line-height:1.5;margin-bottom:10px;}
.post p{font-size:13.5px;color:var(--sub);flex:1;}
.post .more{margin-top:14px;font-size:13.5px;font-weight:600;color:var(--blue);}
.badge-soon{display:inline-block;font-size:11.5px;color:var(--gold);border:1px solid var(--gold);border-radius:4px;padding:0 8px;}

/* ---------- 文章页 ---------- */
.article{max-width:820px;margin:0 auto;}
.article .back{font-size:14px;margin-bottom:26px;display:inline-block;}
.article h1{font-size:32px;line-height:1.5;color:var(--ink);letter-spacing:.5px;}
.article .meta{color:var(--sub);font-size:14px;margin:18px 0 8px;display:flex;gap:16px;flex-wrap:wrap;}
.article .abstract{background:var(--blue-soft);border-left:4px solid var(--blue);border-radius:0 10px 10px 0;padding:18px 22px;margin:28px 0;color:var(--navy);font-size:15px;}
.article h2{font-size:22px;color:var(--navy);margin:44px 0 16px;letter-spacing:.5px;}
.article h3{font-size:17.5px;color:var(--ink);margin:28px 0 12px;}
.article p{margin:14px 0;font-size:16px;color:#2a3644;text-align:justify;}
.article ul.dot{margin:14px 0;}
.article ul.dot li{padding:7px 0 7px 26px;position:relative;font-size:15.5px;color:#2a3644;}
.article ul.dot li::before{content:"";position:absolute;left:4px;top:16px;width:8px;height:8px;border-radius:50%;background:var(--gold);}
.article blockquote{margin:26px 0;padding:20px 26px;background:var(--bg);border-radius:12px;color:var(--navy);font-size:15.5px;border:1px solid var(--line);}
.article table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;background:#fff;border-radius:10px;overflow:hidden;border:1px solid var(--line);}
.article table th{background:var(--blue-soft);padding:11px 14px;text-align:left;font-size:13.5px;}
.article table td{padding:11px 14px;border-top:1px solid var(--line);color:#2a3644;}
.article table td.k{color:var(--navy);font-weight:600;}
.article .end-cta{margin-top:44px;background:linear-gradient(120deg,var(--navy),var(--blue));border-radius:14px;padding:32px 34px;color:#fff;}
.article .end-cta h4{font-size:19px;margin-bottom:8px;}
.article .end-cta p{color:rgba(255,255,255,.85);font-size:14.5px;margin:0 0 16px;}

/* ---------- 关于页 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.value{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:30px;text-align:center;}
.value .k{font-size:13px;letter-spacing:3px;color:var(--gold);font-weight:700;}
.value h3{font-size:20px;color:var(--navy);margin:10px 0 8px;}
.value p{font-size:14px;color:var(--sub);}
.story{max-width:820px;margin:0 auto;text-align:center;}
.story p{font-size:16px;color:#2a3644;text-align:justify;}
.story .big{font-size:24px;color:var(--navy);font-weight:700;text-align:center;margin-bottom:26px;letter-spacing:1px;}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1/-1;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field label em{color:#c0392b;font-style:normal;}
.field input,.field select,.field textarea{border:1.5px solid var(--line);border-radius:10px;padding:12px 16px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink);transition:.2s;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(15,76,129,.12);}
.field textarea{min-height:130px;resize:vertical;}
.form-note{font-size:13px;color:var(--sub);margin-top:14px;}

/* ---------- 页脚 ---------- */
footer.site{background:var(--blue-deep);color:rgba(255,255,255,.75);padding:64px 0 0;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:1px;}
.foot-grid a{display:block;color:rgba(255,255,255,.72);font-size:14px;padding:5px 0;}
.foot-grid a:hover{color:#fff;}
.foot-brand .name{font-size:20px;color:#fff;font-weight:700;letter-spacing:1px;margin-bottom:10px;}
.foot-brand p{font-size:13.5px;line-height:1.9;}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}
.gold-line{width:44px;height:3px;background:var(--gold);border-radius:2px;margin:0 auto 22px;}

/* ---------- 客户评价卡 ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:30px 28px;display:flex;flex-direction:column;transition:.25s;}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9dcf0;}
.quote .qm{font-size:46px;line-height:.8;color:var(--gold);font-family:Georgia,serif;}
.quote h3{font-size:18.5px;color:var(--navy);font-weight:700;margin:14px 0 12px;line-height:1.5;letter-spacing:.3px;}
.quote p{font-size:14.5px;color:var(--sub);flex:1;}
.quote .who{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--sub);}
.quote .who b{display:block;color:var(--ink);font-size:13.5px;font-weight:600;margin-bottom:2px;}
/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .nav-links{display:none;}
  .hero h1{font-size:34px;}
  section{padding:60px 0;}
  .stats{grid-template-columns:repeat(2,1fr);margin-top:-40px;}
  .stat:nth-child(2){border-right:none;}
  .engines,.blocks,.posts,.value-grid{grid-template-columns:1fr;}
  .quotes{grid-template-columns:1fr;}
  .quote{padding:26px 22px 24px;}
  .logos{grid-template-columns:repeat(2,1fr);gap:14px;}
  .logo-chip{height:74px;}
  .layer{grid-template-columns:1fr;gap:14px;}
  .cta-band{padding:40px 30px;}
  .form-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:600px){
  .logos{grid-template-columns:repeat(2,1fr);}
  .logo-chip b{font-size:14px;}
}