/* ============================================================
   标准宝 · 公共样式 site.css
   视觉规范：品牌蓝 #2563EB / 浅蓝 #0EA5E9 / 成功绿 #10B981
   告警 #F59E0B / #EF4444；中性色 0F172A/475569/94A3B8/E2E8F0/F8FAFC
   字体：系统栈；圆角：卡片12/按钮8/输入8；间距 8 的倍数
   ============================================================ */
:root{
  --blue:#2563EB;
  --blue-600:#1D4ED8;
  --sky:#0EA5E9;
  --green:#10B981;
  --amber:#F59E0B;
  --red:#EF4444;
  --ink:#0F172A;
  --body:#475569;
  --muted:#94A3B8;
  --line:#E2E8F0;
  --bg:#F8FAFC;
  --card:#FFFFFF;
  --shadow:0 1px 2px rgba(15,23,42,.06), 0 4px 16px rgba(15,23,42,.04);
  --shadow-lg:0 8px 32px rgba(37,99,235,.12);
  --radius:12px;
  --radius-sm:8px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --num:font-feature-settings "tnum";
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%}
.num{font-feature-settings:"tnum"}

/* ── 容器 ── */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.section{padding:64px 0}
.section-sm{padding:32px 0}

/* ── 顶栏 ── */
.site-nav{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-nav .container{display:flex;align-items:center;height:64px;gap:32px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)}
.nav-brand .logo-mark{
  width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--sky));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:800;
}
.nav-links{display:flex;gap:24px;flex:1}
.nav-links a{color:var(--body);font-size:14px;font-weight:500}
.nav-links a:hover{color:var(--blue)}
.nav-cta{display:flex;gap:12px;align-items:center}

/* ── 按钮 ── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:14px;font-weight:600;font-family:var(--font);cursor:pointer;transition:all .15s;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-600));color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.3)}
.btn-primary:hover{box-shadow:0 8px 24px rgba(37,99,235,.4);transform:translateY(-1px)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}
.btn-ghost{background:transparent;color:var(--body)}
.btn-ghost:hover{color:var(--blue);background:#F1F5F9}
.btn-lg{height:48px;padding:0 28px;font-size:15px;border-radius:10px}
.btn-block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ── 输入框 ── */
.field{position:relative;margin-bottom:16px}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1.5px solid var(--line);
  border-radius:var(--radius-sm);font-size:14px;font-family:var(--font);color:var(--ink);
  outline:none;background:#fff;transition:border-color .15s,box-shadow .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12);
}
.field textarea{height:auto;padding:12px 14px;resize:vertical}

/* ── 卡片 ── */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
}
.card-hover{transition:transform .15s,box-shadow .15s}
.card-hover:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}

/* ── 徽章 / 标签 ── */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:99px;font-size:12px;font-weight:600;
}
.badge-blue{background:#EFF6FF;color:var(--blue)}
.badge-green{background:#ECFDF5;color:#059669}
.badge-amber{background:#FFFBEB;color:#B45309}
.badge-red{background:#FEF2F2;color:#B91C1C}
.badge-slate{background:#F1F5F9;color:#475569}

/* ── 页脚 ── */
.site-footer{background:#0F172A;color:#94A3B8;padding:48px 0 24px;margin-top:64px}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.08)}
.site-footer h4{color:#fff;font-size:14px;margin:0 0 14px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:10px}
.site-footer a{color:#94A3B8;font-size:13px}
.site-footer a:hover{color:#fff}
.site-footer .brand-desc{font-size:13px;line-height:1.8;margin:12px 0 0;max-width:280px}
.site-footer .bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
  padding-top:20px;font-size:12px;color:#64748B;
}

/* ── Hero 区 ── */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(600px 300px at 85% -10%,rgba(14,165,233,.18),transparent 60%),
    radial-gradient(500px 280px at 10% 20%,rgba(37,99,235,.10),transparent 60%),
    linear-gradient(180deg,#FFFFFF,#F5F9FF);
  padding:80px 0 64px;
}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.2;font-weight:700;margin:0 0 16px;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--blue),var(--sky));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{font-size:17px;color:var(--body);margin:0 0 28px;max-width:520px;line-height:1.7}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero .hero-visual{position:relative}
.hero-deco-ring{
  position:absolute;border-radius:50%;pointer-events:none;
}
.hero-deco-ring.r1{width:420px;height:420px;border:1px solid rgba(37,99,235,.15);top:50%;left:50%;transform:translate(-50%,-50%)}
.hero-deco-ring.r2{width:300px;height:300px;border:1px solid rgba(14,165,233,.2);top:50%;left:50%;transform:translate(-50%,-50%)}
.hero-deco-grid{
  position:absolute;inset:-40px;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(37,99,235,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:radial-gradient(ellipse at center,#000 40%,transparent 75%);
  mask-image:radial-gradient(ellipse at center,#000 40%,transparent 75%);
}

/* ── 信任条 ── */
.trust-bar{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-bar .container{display:flex;justify-content:center;gap:48px;padding:20px 24px;flex-wrap:wrap}
.trust-bar .item{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:14px}
.trust-bar .item b{color:var(--ink);font-size:18px;font-weight:700}

/* ── 区块标题 ── */
.sec-head{text-align:center;max-width:640px;margin:0 auto 48px}
.sec-head .eyebrow{color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.sec-head h2{font-size:32px;margin:8px 0 12px;font-weight:700;letter-spacing:-.3px}
.sec-head p{color:var(--body);margin:0;font-size:15px}

/* ── 三卡能力 ── */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card .ico{
  width:48px;height:48px;border-radius:12px;margin-bottom:16px;
  background:linear-gradient(135deg,#EFF6FF,#E0F2FE);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
}
.feature-card .ico svg{width:24px;height:24px}
.feature-card h3{font-size:18px;margin:0 0 8px}
.feature-card p{color:var(--body);font-size:14px;margin:0 0 14px;line-height:1.7}
.feature-card .demo-link{font-size:13px;font-weight:600}

/* ── 工作流时间线 ── */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.timeline .step{position:relative;padding-top:44px}
.timeline .step::before{
  counter-increment:step;content:counter(step);
  position:absolute;top:0;left:0;width:32px;height:32px;border-radius:10px;
  background:linear-gradient(135deg,var(--blue),var(--sky));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.timeline .step h3{font-size:15px;margin:0 0 6px}
.timeline .step p{font-size:13px;color:var(--body);margin:0}

/* ── 折叠区（FAQ / 报告样例）── */
.accordion{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.accordion .acc-item{border-bottom:1px solid var(--line)}
.accordion .acc-item:last-child{border-bottom:0}
.accordion .acc-head{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 24px;cursor:pointer;font-weight:600;font-size:15px;user-select:none;
}
.accordion .acc-head:hover{background:#F8FAFC}
.accordion .acc-head .chev{color:var(--muted);transition:transform .2s;flex-shrink:0}
.accordion .acc-item.open .chev{transform:rotate(180deg)}
.accordion .acc-body{display:none;padding:0 24px 20px;color:var(--body);font-size:14px;line-height:1.8}
.accordion .acc-item.open .acc-body{display:block}

/* ── 风险等级色（报告样例 / 报告页通用）── */
.risk-fatal{color:#B91C1C;background:#FEF2F2}
.risk-serious{color:#B45309;background:#FFFBEB}
.risk-normal{color:#1D4ED8;background:#EFF6FF}
.risk-pass{color:#059669;background:#ECFDF5}

/* ── 价格卡 ── */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.price-card{display:flex;flex-direction:column;position:relative}
.price-card .p-top{padding:24px;border-bottom:1px solid var(--line)}
.price-card .p-count{font-size:36px;font-weight:800;letter-spacing:-1px;font-feature-settings:"tnum"}
.price-card .p-count small{font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0}
.price-card .p-valid{color:var(--muted);font-size:13px;margin-top:4px}
.price-card .p-body{padding:20px 24px;flex:1;display:flex;flex-direction:column}
.price-card .p-feats{list-style:none;margin:0 0 20px;padding:0;flex:1}
.price-card .p-feats li{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--body);margin-bottom:10px;line-height:1.5}
.price-card .p-feats li svg{width:16px;height:16px;color:var(--green);flex-shrink:0;margin-top:2px}
.price-card .p-cta{margin-top:auto}
.price-card.featured{border-color:var(--blue);box-shadow:var(--shadow-lg)}

/* ── 登录页 ── */
.login-page{display:grid;grid-template-columns:1fr 480px;min-height:100vh}
.login-left{
  position:relative;overflow:hidden;padding:64px 56px;display:flex;flex-direction:column;justify-content:center;
  background:
    radial-gradient(500px 300px at 20% 0%,rgba(14,165,233,.25),transparent 60%),
    radial-gradient(600px 400px at 90% 90%,rgba(37,99,235,.2),transparent 60%),
    linear-gradient(160deg,#0F172A,#1E3A8A 60%,#1D4ED8);
  color:#fff;
}
.login-left .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;margin-bottom:48px}
.login-left .brand .logo-mark{
  width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--sky),#fff);
  display:flex;align-items:center;justify-content:center;color:#1D4ED8;font-weight:800;font-size:18px;
}
.login-left h1{font-size:38px;line-height:1.25;margin:0 0 16px;font-weight:700;letter-spacing:-.5px}
.login-left h1 em{font-style:normal;background:linear-gradient(90deg,#7DD3FC,#BAE6FD);-webkit-background-clip:text;background-clip:text;color:transparent}
.login-left .sub{font-size:16px;color:rgba(255,255,255,.75);max-width:420px;line-height:1.8;margin:0 0 56px}
.login-left .qrs{display:flex;gap:24px;flex-wrap:wrap}
.login-left .qr-item{text-align:center;font-size:12px;color:rgba(255,255,255,.7)}
.login-left .qr-item .qr-box{
  width:96px;height:96px;border-radius:12px;background:#fff;margin-bottom:8px;
  display:flex;align-items:center;justify-content:center;color:#94A3B8;font-size:24px;
}
.login-right{display:flex;align-items:center;justify-content:center;padding:48px 32px;background:#F8FAFC}
.login-card-box{width:420px;max-width:100%}
.login-card-box .lc-head{margin-bottom:20px}
.login-card-box .lc-head h2{font-size:22px;margin:0 0 4px}
.login-card-box .lc-head p{color:var(--muted);font-size:13px;margin:0}
.login-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px}
.login-tab{
  flex:1;background:none;border:0;border-bottom:2px solid transparent;padding:10px 4px;
  font-size:14px;font-weight:600;color:var(--muted);cursor:pointer;font-family:var(--font);
  transition:color .15s,border-color .15s;
}
.login-tab.active{color:var(--blue);border-bottom-color:var(--blue)}
.login-tab:hover{color:var(--blue)}
.login-panel{display:none}
.login-panel.active{display:block}
.login-hint{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7;text-align:center}
.login-agree{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin:14px 0 18px}
.login-agree input{width:16px;height:16px;accent-color:var(--blue);margin:0}

/* ── 2026-09 营销信任升级 ── */
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.basis-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:10px;padding:20px 22px}
.basis-card h3{font-size:16px;margin:0 0 8px}
.basis-card p{font-size:14px;color:var(--body);line-height:1.8;margin:0}
.audit-note{
  max-width:760px;margin:28px auto 0;padding:14px 18px;
  background:#FFFBEB;border:1px solid #FDE68A;border-radius:10px;
  font-size:13px;color:#92400E;line-height:1.8;
}
.scenario-card{display:flex;flex-direction:column;gap:12px}
.scenario-card h3{font-size:18px;margin:0}
.sc-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.7;margin:0}
.sc-row b{flex:0 0 64px;color:var(--ink);font-weight:700}
.sc-row span{flex:1;color:var(--body)}
.business-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.business-grid .ent-card{background:#F8FAFC;border:1px solid var(--line);border-radius:10px;padding:20px}
.business-grid .ent-card h3{font-size:16px;margin:0 0 8px}
.business-grid .ent-card p{font-size:13px;color:var(--body);line-height:1.7;margin:0}
.band-cta{display:flex;gap:16px;justify-content:center;align-items:center;flex-wrap:wrap;margin-top:32px}
.contact-mail{font-size:14px;color:var(--muted)}
.contact-wechat{display:flex;gap:14px;align-items:flex-start}
.contact-wechat img{width:96px;height:96px;border-radius:10px;border:1px solid var(--line);background:#fff;display:block}
.contact-wechat .qr-cap{font-size:12px;color:var(--muted);line-height:1.5;max-width:140px}
.qr-img{width:88px;aspect-ratio:1/1;flex:0 0 auto;border-radius:8px;background:#fff;border:1px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:10px;overflow:hidden}
.qr-img img{width:100%;height:100%;object-fit:contain;background:#fff;border-radius:8px}

/* ── 响应式 ── */
@media(max-width:960px){
  .hero .container{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:34px}
  .grid-3{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr 1fr}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .login-page{grid-template-columns:1fr}
  .login-left{display:none}
}
@media(max-width:640px){
  .section{padding:40px 0}
  .nav-links{display:none}
  .timeline{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .hero h1{font-size:28px}
  .trust-bar .container{gap:20px}
  .business-grid{grid-template-columns:1fr}
}