/* =========================================================
   华致赢管理技术 · 网站共享样式 (原型 v0.1)
   设计：深蓝 + 白底 · 语义化 · GEO 友好
   ========================================================= */
:root{
  --brand:#1B4E9B;        /* 主深蓝 */
  --brand-2:#2E6BE6;      /* 亮蓝(数字线) */
  --accent:#C8A24B;       /* 金色(精益线) */
  --ink:#1A2433;          /* 正文深色 */
  --ink-2:#43536B;        /* 次级 */
  --ink-3:#7A879C;        /* 弱化 */
  --line:#E3E8F0;
  --bg:#FFFFFF;
  --bg-soft:#F4F7FB;
  --bg-dark:#0E2A52;
  --ok:#1E7E4E;
  --warn:#B45309;
  --radius:14px;
  --shadow:0 6px 22px rgba(14,42,82,.08);
  --maxw:1160px;
  --font: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部条 ---------- */
.topbar{background:var(--bg-dark);color:#CFE0F6;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;min-height:34px;gap:12px}
.topbar a{color:#CFE0F6}
.lang-switch{display:inline-flex;border:1px solid #35639E;border-radius:6px;overflow:hidden}
.lang-switch span,.lang-switch a{padding:1px 10px;font-size:12px;line-height:20px}
.lang-switch .on{background:#35639E;color:#fff}
/* ---------- 头部导航 ---------- */
.site-header{background:var(--bg);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;flex-shrink:0;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand-mark{width:44px;height:44px;display:flex;align-items:center;justify-content:center}
.brand-mark img{width:100%;height:100%;object-fit:contain;display:block}
.brand-name{font-size:19px;line-height:1.25}
.brand-sub{display:block;font-size:11px;color:var(--ink-3);font-weight:400;letter-spacing:1px}
.main-nav{display:flex;gap:14px;margin-left:auto;align-items:center;flex-wrap:nowrap}
.main-nav a{color:var(--ink-2);font-size:14px;white-space:nowrap}
.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--brand);text-decoration:none;font-weight:600}
.cta-btn{background:var(--brand);color:#fff!important;padding:8px 14px;border-radius:8px;font-weight:600;font-size:14px!important}
.cta-btn:hover{background:var(--brand-2);text-decoration:none}
@media(max-width:900px){.main-nav{display:none}}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(120deg,#0E2A52 0%,#1B4E9B 62%,#2E6BE6 100%);color:#fff;padding:72px 0 80px}
.hero .wrap{display:grid;grid-template-columns:1.35fr .9fr;gap:44px;align-items:center}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.hero-eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:#9FC0F0;border:1px solid #35639E;padding:3px 12px;border-radius:20px;margin-bottom:18px}
.hero h1{font-size:36px;line-height:1.28;letter-spacing:.5px;margin-bottom:16px;font-weight:800}
@media(max-width:1100px){.hero h1{font-size:30px}}
@media(max-width:700px){.hero h1{font-size:26px}}
.hero .lead{font-size:17.5px;color:#D6E4F8;max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:9px;font-weight:600;font-size:15px}
.btn-light{background:#fff;color:var(--brand)!important}
.btn-light:hover{background:#E8F0FD;text-decoration:none}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff!important}
.btn-ghost:hover{background:rgba(255,255,255,.12);text-decoration:none}
.btn-solid{background:var(--brand);color:#fff!important}
.btn-solid:hover{background:var(--brand-2);text-decoration:none}
.hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.metric{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:16px}
.metric b{display:block;font-size:26px;color:#fff}
.metric span{font-size:13px;color:#BFD4F0}
.hero-note{margin-top:16px;font-size:12.5px;color:#9FC0F0}

/* ---------- 版块 ---------- */
.section{padding:66px 0}
.section.soft{background:var(--bg-soft)}
.sec-head{max-width:760px;margin-bottom:38px}
.sec-tag{display:inline-block;font-size:12.5px;letter-spacing:1.5px;color:var(--brand);font-weight:700;margin-bottom:8px}
.sec-head h2{font-size:30px;line-height:1.35;font-weight:800;color:var(--ink)}
.sec-head p{color:var(--ink-2);margin-top:10px;font-size:16px}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* ---------- 卡片 ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:860px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card .ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.b-lb{background:#EEF3FC;color:var(--brand)}
.b-gd{background:#F6EFE2;color:var(--accent)}
.card h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.card p{font-size:14.5px;color:var(--ink-2)}
.card a.more{font-size:14px;font-weight:600;display:inline-block;margin-top:12px}

/* ---------- 双产品 ---------- */
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:860px){.pillars{grid-template-columns:1fr}}
.pillar{border-radius:18px;padding:34px;border:1px solid var(--line);position:relative;overflow:hidden}
.pillar.lean{background:#FAF6EE;border-color:#E6D9BC}
.pillar.digi{background:#F0F5FD;border-color:#C9DCF6}
.pillar .tag{font-size:12.5px;letter-spacing:1.5px;font-weight:700;margin-bottom:10px}
.pillar.lean .tag{color:#9A6B13}
.pillar.digi .tag{color:var(--brand)}
.pillar h2{font-size:27px;margin-bottom:12px}
.pillar ul{list-style:none;margin:16px 0 6px}
.pillar li{position:relative;padding-left:22px;margin-bottom:9px;color:var(--ink-2);font-size:15px}
.pillar li::before{content:"›";position:absolute;left:6px;color:var(--brand-2);font-weight:700}
.pillar .link-row{margin-top:16px;display:flex;gap:16px;align-items:center}

/* ---------- 行业 ---------- */
.ind-card{padding:22px 22px 18px}
.ind-card .ind-no{font-size:13px;color:var(--brand-2);font-weight:700;letter-spacing:1px}
.ind-card h3{font-size:17px;margin:4px 0 8px}
.ind-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.ind-tags span{font-size:12px;color:var(--ink-2);background:var(--bg-soft);border:1px solid var(--line);padding:2px 9px;border-radius:12px}

/* ---------- 案例 ---------- */
.case{border-left:4px solid var(--brand);background:var(--bg);padding:22px 24px;border-radius:0 14px 14px 0;border:1px solid var(--line);border-left-width:4px}
.case .src{display:inline-block;font-size:12px;font-weight:700;padding:2px 10px;border-radius:12px;margin-bottom:10px}
.src-hzy{background:#F6EFE2;color:#8A5D0A}
.src-dms{background:#E4EEFB;color:var(--brand)}
.case h3{font-size:17px;margin-bottom:6px}
.case p{font-size:14.5px;color:var(--ink-2)}
.case .nums{display:flex;gap:26px;margin-top:12px;flex-wrap:wrap}
.case .nums b{display:block;font-size:22px;color:var(--brand)}
.case .nums span{font-size:12.5px;color:var(--ink-3)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:st}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:relative}
.step .n{font-size:30px;font-weight:800;color:#D7E3F6;line-height:1}
.step h3{font-size:16px;margin:6px 0 6px}
.step p{font-size:13.5px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
details{border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px;background:var(--bg)}
summary{cursor:pointer;font-weight:600;font-size:16px;color:var(--ink);list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"Q  ";color:var(--brand);font-weight:800}
details p{margin-top:10px;color:var(--ink-2);font-size:14.5px}
details[open]{border-color:#B9CDEF}

/* ---------- CTA ---------- */
.cta-band{background:var(--bg-dark);color:#fff;text-align:center;padding:58px 24px;border-radius:22px}
.cta-band h2{font-size:28px;margin-bottom:10px}
.cta-band p{color:#BFD4F0;max-width:640px;margin:0 auto 24px}
/* ---------- Footer ---------- */
.site-footer{background:#0A1E3C;color:#9FB4D4;font-size:13.5px;margin-top:70px}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:30px;padding:48px 0 34px}
@media(max-width:900px){.site-footer .cols{grid-template-columns:1fr 1fr}}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer a{color:#9FB4D4}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid #16325C;padding:16px 0;font-size:12.5px;color:#6E84A8}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:6px 12px;z-index:99}
.skip-link:focus{left:8px;top:8px;color:var(--brand)}

/* ---------- 面包屑 ---------- */
.breadcrumbs{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:12px 0;font-size:13.5px;color:var(--ink-3)}
.breadcrumbs .wrap{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumbs a{color:var(--ink-2)}
.breadcrumbs a:hover{color:var(--brand)}
.breadcrumbs .sep{color:var(--ink-3);opacity:.6}
.breadcrumbs .cur{color:var(--ink-3)}

/* ---------- 行业落地页专属 ---------- */
.page-hero{padding:64px 0 70px}
.page-hero .wrap{display:grid;grid-template-columns:1.5fr 1fr;gap:44px;align-items:center}
@media(max-width:900px){.page-hero .wrap{grid-template-columns:1fr}}
.page-hero h1{font-size:34px;line-height:1.3;font-weight:800;letter-spacing:.5px;margin-bottom:16px}
@media(max-width:700px){.page-hero h1{font-size:26px}}
.page-hero .lead{font-size:16.5px;color:var(--ink-2);max-width:640px;margin-bottom:24px}
.lead b{color:var(--ink)}
.page-hero .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.page-hero .tag-row span{font-size:12px;background:#EEF3FC;color:var(--brand);border:1px solid #C9DCF6;padding:3px 11px;border-radius:20px;font-weight:600}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 行业方案双支柱（精益×智能运维） */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:860px){.duo{grid-template-columns:1fr}}
.duo .pillar{height:100%}

/* 方案要点列表（行业页复用） */
.chk-list{list-style:none;margin:14px 0 0}
.chk-list li{position:relative;padding-left:26px;margin-bottom:8px;font-size:14.5px;color:var(--ink-2)}
.chk-list li::before{content:"✓";position:absolute;left:2px;color:var(--ok);font-weight:800}
.duo .digi .chk-list li::before{color:var(--brand-2)}

/* 行业痛点列表 */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:860px){.stat-band{grid-template-columns:1fr 1fr}}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center}
.stat b{display:block;font-size:24px;color:var(--brand);line-height:1.3}
.stat span{font-size:12.5px;color:var(--ink-3)}
.stat em{display:block;font-style:normal;font-size:11px;color:#B9C6DA;margin-top:2px}

/* =========================================================
   移动端自适应增强（汉堡菜单 + 小屏细节）
   ========================================================= */
.nav-toggle{display:none}
.nav-burger{display:none}
@media(max-width:900px){
  .site-header .wrap{position:relative;min-height:64px}
  /* 汉堡按钮（纯 CSS，checkbox 控制） */
  .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;margin-left:auto;padding:10px;cursor:pointer;z-index:60}
  .nav-burger span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
  .nav-toggle:checked ~ .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked ~ .nav-burger span:nth-child(2){opacity:0}
  .nav-toggle:checked ~ .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  /* 下拉菜单面板 */
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 20px 14px;gap:0;box-shadow:var(--shadow);margin-left:0}
  .main-nav a{padding:12px 4px;font-size:15px;border-bottom:1px solid var(--bg-soft)}
  .main-nav a:last-child{border-bottom:0}
  .main-nav .cta-btn{margin-top:10px;text-align:center}
  .nav-toggle:checked ~ .main-nav{display:flex}
}
@media(max-width:700px){
  .wrap{padding:0 16px}
  .topbar{font-size:12px}
  .topbar .wrap{flex-wrap:wrap;padding-top:5px;padding-bottom:5px;gap:2px 12px}
  .brand-name{font-size:17px}
  .hero{padding:48px 0 54px}
  .hero .wrap{gap:30px}
  .hero .lead{font-size:16px}
  .metric b{font-size:22px}
  .section{padding:46px 0}
  .sec-head{margin-bottom:26px}
  .sec-head h2{font-size:23px}
  .pillar{padding:24px}
  .pillar h2{font-size:22px}
  .page-hero{padding:44px 0 50px}
  .cta-band{padding:42px 18px;border-radius:16px}
  .cta-band h2{font-size:22px}
  .btn{padding:12px 18px}
  .hero-actions .btn{flex:1 1 auto;text-align:center}
  .card{padding:20px}
  .case{padding:18px}
  .case .nums{gap:18px}
  .case .nums b{font-size:19px}
  details{padding:14px 16px}
  summary{font-size:15px}
}
@media(max-width:560px){
  .brand{flex-shrink:1;min-width:0}
  .brand-name{font-size:16px}
  .brand-sub{display:none}
  .site-footer .cols{grid-template-columns:1fr;gap:22px}
  .site-footer figure img{width:78px!important;height:78px!important}
}

/* =========================================================
   产品中心（产品线页）
   ========================================================= */
.pd-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.pd-cards{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.pd-cards{grid-template-columns:1fr}}
.pd-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.pd-card .ph{height:224px;display:flex;align-items:center;justify-content:center;padding:16px;background:#fff;border-bottom:1px solid var(--line)}
.pd-card .ph img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}
.pd-card .bd{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.pd-model{font-size:12.5px;font-weight:700;letter-spacing:.6px;color:var(--brand-2);margin-bottom:5px}
.pd-card h3{font-size:16.5px;margin-bottom:8px}
.pd-desc{font-size:13.8px;color:var(--ink-2);margin-bottom:10px}
.spec-list{list-style:none;margin:0}
.spec-list li{position:relative;padding-left:15px;font-size:13.3px;line-height:1.62;color:var(--ink-2);margin-bottom:5px}
.spec-list li::before{content:"";position:absolute;left:2px;top:.66em;width:5px;height:5px;border-radius:50%;background:#8FB4E8}
.cert-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:12px}
.cert-tags span{font-size:11.5px;line-height:1.6;padding:2px 9px;border-radius:20px;background:var(--bg-soft);border:1px solid var(--line);color:var(--ink-2)}
.cert-tags span.ma{background:#FFF4EA;border-color:#FADFC6;color:#9A5210}
.cert-tags span.cx{background:#F1F7FF;border-color:#CFE2FB;color:var(--brand)}

/* 系统价值 图卡 */
.pd-vals{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:860px){.pd-vals{grid-template-columns:1fr}}
.pd-val{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.pd-val .ph{background:#fff;border-bottom:1px solid var(--line)}
.pd-val .ph img{width:100%;height:206px;object-fit:contain;padding:10px;display:block}
.pd-val .bd{padding:18px 22px 20px}
.pd-val h3{font-size:17px;margin-bottom:6px}
.pd-val p{font-size:14.2px;color:var(--ink-2)}

/* 系统截图 / 示意图 */
.pd-shots{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:860px){.pd-shots{grid-template-columns:1fr}}
.pd-shot{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);margin:0}
.pd-shot img{width:100%;height:auto;border-radius:8px;display:block}
.pd-shot figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}

/* 小图标价值卡 */
.pd-icons{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.pd-icons{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.pd-icons{grid-template-columns:1fr}}
.pd-icon{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.pd-icon img{width:52px;height:52px;margin-bottom:12px}
.pd-icon h3{font-size:16px;margin-bottom:6px}
.pd-icon p{font-size:13.8px;color:var(--ink-2)}

/* 分组标题条 */
.pd-group-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;border-bottom:2px solid var(--line);padding-bottom:12px;margin-bottom:26px}
.pd-group-head .no{font-size:13px;font-weight:700;letter-spacing:1.6px;color:var(--brand-2)}
.pd-group-head h2{font-size:24px;font-weight:800}
.pd-group-head .en{font-size:12.5px;color:var(--ink-3);letter-spacing:.5px}

/* AI 产品主干带 */
.pd-ai{background:linear-gradient(120deg,#0E2A52 0%,#1B4E9B 62%,#2E6BE6 100%);color:#fff;border-radius:22px;padding:38px 40px;display:grid;grid-template-columns:1.35fr .85fr;gap:36px;align-items:center}
@media(max-width:900px){.pd-ai{grid-template-columns:1fr;padding:30px 24px}}
.pd-ai h2{font-size:27px;margin-bottom:12px;font-weight:800}
.pd-ai p{color:#D6E4F8;font-size:15.5px}
.pd-ai .pill-list{list-style:none;margin:16px 0 0}
.pd-ai .pill-list li{position:relative;padding-left:22px;margin-bottom:8px;color:#D6E4F8;font-size:14.5px}
.pd-ai .pill-list li::before{content:"›";position:absolute;left:6px;color:#9FC0F0;font-weight:700}
.pd-ai .side{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);border-radius:16px;padding:22px}
.pd-ai .side b{display:block;font-size:15px;color:#fff;margin-bottom:10px}
.pd-ai .side span{display:block;font-size:13.5px;color:#BFD4F0;margin-bottom:7px}

/* 产品卡脚注（开放方式 / 备注） */
.pd-note{font-size:12.5px;color:var(--ink-3);line-height:1.66;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
.pd-note b{color:var(--ink-2);font-weight:600}

/* 卡片内按钮与标签留出间距（仅产品中心） */
.pd-wrap .link-row{margin-top:14px}
.stat b.sm{font-size:16px;letter-spacing:.5px}

/* 来源与口径声明 */
.src-note{background:var(--bg-soft);border:1px dashed #C9D6E8;border-radius:12px;padding:14px 18px;font-size:13px;color:var(--ink-3);line-height:1.74}
.src-note b{color:var(--ink-2)}