/* ============ 设计变量（内容区 + 页头/页尾共用） ============ */
:root{
  /* 内容区配色（沿用 what-is-crm 既有设计） */
  --brand:#1d4ed8;
  --brand-600:#2563eb;
  --brand-dark:#1e3a8a;
  --brand-light:#eff4ff;
  --accent:#f97316;
  --accent-hover:#ea670c;
  --text:#0f172a;
  --text-2:#334155;
  --text-muted:#64748b;
  --border:#e8edf4;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --radius:14px;
  --radius-sm:10px;
  --maxw:1200px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.05);
  --shadow-md:0 4px 12px rgba(15,23,42,.06),0 12px 32px rgba(15,23,42,.08);
  --ease-out:cubic-bezier(0.23,1,0.32,1);
  --ease-in-out:cubic-bezier(0.77,0,0.175,1);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
  /* 页头/页尾配色（取自 vs-wkcrm 线上样式，主色 #2A7EFC） */
  --blue:#2A7EFC;
  --blue-deep:#1668DC;
  --blue-soft:#EAF2FF;
  --brand-cyan:#00A8E8;
  --accent-soft:#FFF3E6;
  --ink:#0F1B2D;
  --muted:#666666;
  --faint:#999999;
  --line:#E8EDF5;
  --line-strong:#D6E0EE;
  --tint:#F5F8FC;
  --white:#FFFFFF;
  --wrap:1240px;
  --ease:cubic-bezier(.16,1,.3,1);
  --header-h:68px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{font-family:var(--font);color:var(--text-2);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--brand);text-decoration:none}
img,svg{max-width:100%;height:auto;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.3;color:var(--brand-dark)}
p{margin:12px 0;color:var(--text-2)}
ul,ol{margin:12px 0 12px 22px}
li{margin:8px 0}
strong{color:var(--text)}

/* dms是什么行业卡片 */
.industry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:22px 0}
.industry{display:flex;gap:16px;padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform 200ms var(--ease-out),box-shadow 200ms var(--ease-out)}
@media (hover:hover) and (pointer:fine){
  .industry:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
}
.industry .ico{flex:0 0 46px;height:46px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center}
.industry .ico svg{width:24px;height:24px}
.industry h3{margin:0 0 6px;font-size:1.05rem;color:var(--text)}
.industry h3 a{color:var(--text)}
.industry h3 a:hover{color:var(--brand)}
.industry p{margin:0;color:var(--text-muted);font-size:.92rem;line-height:1.65}

/* ============ 按钮（vs-wkcrm 同款蓝系） ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(42,126,252,.28)}
.btn-primary:hover{background:var(--blue-deep);box-shadow:0 10px 26px rgba(42,126,252,.36)}
.btn-line{background:transparent;color:var(--blue);border-color:var(--line-strong)}
.btn-line:hover{border-color:var(--blue);background:var(--blue-soft)}
.btn-ghost{background:transparent;color:var(--ink);border-color:transparent;padding:9px 14px}
.btn-ghost:hover{color:var(--blue);background:var(--blue-soft)}
.btn-secondary{background:#fff;color:var(--brand-dark);box-shadow:var(--shadow-sm)}
.btn-sm{padding:8px 16px;font-size:14px}
@media (hover:hover) and (pointer:fine){
  .btn-secondary:hover{box-shadow:var(--shadow-md);text-decoration:none;transform:translateY(-1px)}
}
/* 深色 Hero 上的主按钮用品牌橙，保证对比度 */
.hero .btn-primary{background:var(--accent);box-shadow:0 4px 14px rgba(249,115,22,.32)}
.hero .btn-primary:hover{background:var(--accent-hover);box-shadow:0 6px 20px rgba(249,115,22,.4)}

/* ============ 页头（复用 vs-wkcrm） ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 4px 20px rgba(15,27,45,.05)}
.header-inner{display:flex;align-items:center;gap:22px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:9px;flex:none}
.brand-logo{width:150px;height:auto;object-fit:contain}
.brand-logo-light{width:140px;background:#fff;border-radius:8px;padding:6px 10px}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.site-nav a{padding:8px 13px;border-radius:8px;font-size:15px;color:var(--muted);font-weight:500;transition:color .18s var(--ease),background-color .18s var(--ease)}
.site-nav a:hover{color:var(--blue);background:var(--blue-soft)}
.site-nav a[aria-current="page"]{color:var(--blue);font-weight:600}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:8px}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;padding:10px;background:transparent;border:1px solid var(--line-strong);border-radius:10px;cursor:pointer;flex-direction:column;justify-content:space-between}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(9px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}
.mobile-nav{display:flex;flex-direction:column;padding:8px 24px 18px;border-top:1px solid var(--line);background:#fff;box-shadow:0 16px 30px rgba(15,27,45,.07)}
.mobile-nav a{padding:13px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-nav a:last-child{border-bottom:0;color:var(--blue);font-weight:600}
.mobile-nav[hidden]{display:none}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#1e3a8a 0%,#1d4ed8 58%,#2563eb 100%);color:#fff;padding:72px 0 84px}
.hero::before{content:"";position:absolute;top:-130px;right:-90px;width:440px;height:440px;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%);border-radius:50%}
.hero::after{content:"";position:absolute;bottom:-170px;left:-70px;width:400px;height:400px;background:radial-gradient(circle,rgba(56,189,248,.18),transparent 70%);border-radius:50%}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.hero-copy .breadcrumb{font-size:.85rem;color:#bcd3f7;margin-bottom:18px}
.hero-copy .breadcrumb a{color:#bcd3f7}
.hero-copy .breadcrumb a:hover{color:#fff}
.hero h1{color:#fff;font-size:clamp(2rem,5vw,3.2rem);font-weight:800;letter-spacing:-.02em;margin:0 0 18px;line-height:1.22}
.hero .lead{color:#dbeafe;font-size:clamp(1.05rem,2vw,1.25rem);max-width:620px;line-height:1.7}
.hero .lead strong{color:#fff}
.hero-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.hero .updated{color:#93c5fd;margin-top:20px;font-size:.85rem}
.hero-visual{background:#f8fafc;border:1px solid rgba(255,255,255,.45);border-radius:22px;padding:20px;box-shadow:0 22px 50px rgba(2,6,23,.30)}
.hero-visual svg{width:100%;height:auto;display:block}

/* ============ 主体内容 ============ */
main.container{padding-top:8px;padding-bottom:24px}
h2{font-size:clamp(1.5rem,3vw,1.95rem);margin:56px 0 22px;color:var(--brand-dark);position:relative;padding-left:16px}
h2::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;border-radius:4px;background:linear-gradient(var(--brand),var(--brand-dark))}
h3{font-size:1.12rem;margin:22px 0 8px;color:var(--text)}
.lead-body{font-size:1.05rem;color:var(--text-2)}
/* 文章插图 */
.article-figure{margin:34px 0;text-align:center}
.article-figure .fig-card{display:inline-block;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);max-width:100%}
.article-figure svg{width:100%;max-width:640px;height:auto;display:block}
.article-figure figcaption{margin-top:12px;font-size:.85rem;color:var(--text-muted)}
/* 卡片网格 */
.grid{display:grid;gap:18px;margin:22px 0}
.grid-2{grid-template-columns:1fr 1fr}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform 200ms var(--ease-out),box-shadow 200ms var(--ease-out)}
.card h3{margin-top:0}
@media (hover:hover) and (pointer:fine){
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
}
/* 数据指标 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:26px 0}
.metric{text-align:center;background:linear-gradient(180deg,#fff,var(--brand-light));border:1px solid var(--border);border-radius:var(--radius);padding:28px 14px}
.metric .num{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand-dark));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.metric .label{font-size:.88rem;color:var(--text-muted);margin-top:10px}
/* 功能 / 问题卡片 */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:22px 0}
.feature{display:flex;gap:16px;padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform 200ms var(--ease-out),box-shadow 200ms var(--ease-out)}
@media (hover:hover) and (pointer:fine){
  .feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
}
.feature .ico{flex:0 0 46px;height:46px;border-radius:12px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center}
.feature .ico svg{width:24px;height:24px}
.feature h3{margin:0 0 6px;font-size:1.05rem;color:var(--text)}
.feature h3 a{color:var(--text)}
.feature h3 a:hover{color:var(--brand)}
.feature p{margin:0;color:var(--text-muted);font-size:.92rem;line-height:1.65}
/* 对比表 */
table.compare{width:100%;border-collapse:separate;border-spacing:0;margin:22px 0;font-size:.93rem;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
table.compare th,table.compare td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border)}
table.compare tr:last-child td{border-bottom:none}
table.compare th{background:var(--brand-light);color:var(--brand-dark);font-weight:700}
table.compare td:first-child{font-weight:600;color:var(--text)}
@media (hover:hover) and (pointer:fine){
  table.compare tbody tr{transition:background-color 150ms ease}
  table.compare tbody tr:hover{background:var(--bg-soft)}
}
/* FAQ */
details.faq{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:2px 20px;margin:12px 0;transition:border-color 160ms ease,box-shadow 160ms var(--ease-out)}
@media (hover:hover) and (pointer:fine){
  details.faq:hover{border-color:#c7d6f0;box-shadow:var(--shadow-sm)}
}
details.faq summary{cursor:pointer;font-weight:600;padding:16px 0;color:var(--text);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--brand);font-weight:700;font-size:1.4rem;line-height:1;transition:transform 220ms var(--ease-out)}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq p{padding:0 0 16px;color:var(--text-muted);line-height:1.7}
/* CTA 区块 */
.cta{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border-radius:var(--radius);padding:46px 32px;text-align:center;margin:60px 0;box-shadow:var(--shadow-md)}
.cta h2{color:#fff;margin-top:0;padding-left:0}
.cta h2::before{display:none}
.cta p{color:#dbeafe;max-width:640px;margin:0 auto}
.cta .cta-actions{margin-top:24px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta .btn-primary{background:#fff;color:var(--brand-dark);box-shadow:none}
@media (hover:hover){.cta .btn-primary:hover{background:#e2e8f0}}
/* 作者 */
.author{display:flex;align-items:center;gap:14px;margin:42px 0;padding:18px 22px;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;color:var(--text-muted)}
.author .avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex:0 0 46px}

/* ============ 页尾（复用 vs-wkcrm） ============ */
.site-footer{background:#0F1B2D;color:rgba(255,255,255,.68);padding:44px 0 26px;margin-top:80px}
.site-footer a{color:rgba(255,255,255,.68);text-decoration:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.ft-service{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-bottom:34px;margin:0 0 34px;border-bottom:1px solid rgba(255,255,255,.12);list-style:none}
.ft-service li{display:flex;flex-direction:column;gap:2px;padding-left:46px;position:relative}
.ft-ico{position:absolute;left:0;top:2px;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(42,126,252,.20);border:1px solid rgba(42,126,252,.35)}
.ic{width:1em;height:1em;flex:none;vertical-align:-.12em}
.ft-ico .ic{width:19px;height:19px;color:#7FD4FF}
.ft-t{font-size:15px;font-weight:700;color:#fff}
.ft-d{font-size:13px;color:rgba(255,255,255,.62);line-height:1.6}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;max-width:44ch}
.ft-company{font-size:15px !important;color:#fff !important;font-weight:600;margin-top:2px}
.ft-cr{font-size:13px !important;color:rgba(255,255,255,.5) !important}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col a{display:block;padding:6px 0;font-size:14px;transition:color .18s var(--ease)}
.footer-col a:hover{color:#7FD4FF}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom p{margin:0}
.footer-links{display:flex;gap:18px;margin:0;padding:0;list-style:none}
.footer-links a{color:rgba(255,255,255,.45)}
.footer-links a:hover{color:#7FD4FF}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .site-nav{display:none}
  .nav-toggle{display:flex}
  .header-cta{display:none}
}
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{display:none}
  .grid-2,.feature-grid,.metrics{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .ft-service{grid-template-columns:1fr 1fr}
  .hero{padding:52px 0 56px}
  .cta{padding:36px 20px}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr}
  .ft-service{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}