/* ============================================================
   顺糖GEO 官网 · 首页落地页样式 v3.0「云蓝」
   参考风格：蓝色科技渐变 hero + 右侧预约表单卡
   仅首页使用；子页面仍用 site.css
   ============================================================ */
:root{
  --blue-900:#0B2A8E;
  --blue-700:#1D46D8;
  --blue-600:#1F5AF6;
  --blue-500:#2F7BFF;
  --blue-100:#E8F0FF;
  --ink:#1B2333;
  --ink-2:#4A5568;
  --line:#E4EAF5;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FF;
  --radius:14px;
  --shadow-lg:0 24px 60px rgba(13,42,140,.18);
  --shadow-md:0 10px 30px rgba(13,42,140,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-bar{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:19px;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand img{width:34px;height:34px;border-radius:8px}
.main-nav{display:flex;gap:26px;flex:1}
.main-nav a{color:var(--ink-2);font-size:15px;padding:4px 0}
.main-nav a:hover{color:var(--blue-600);text-decoration:none}
.header-cta{display:flex;align-items:center;gap:16px;flex-shrink:0}
.header-phone{display:flex;align-items:center;gap:6px;color:var(--ink);font-weight:700;font-size:15px}
.header-phone svg{color:var(--blue-600)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;font-weight:600;cursor:pointer;border:none;
  padding:12px 26px;font-size:16px;transition:transform .15s,box-shadow .15s;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:#fff;
  box-shadow:0 8px 20px rgba(31,90,246,.35);
}
.btn-primary:hover{box-shadow:0 12px 26px rgba(31,90,246,.45)}
.btn-white{background:#fff;color:var(--blue-600);box-shadow:0 8px 20px rgba(4,16,60,.18)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:8px}
.btn-lg{padding:15px 34px;font-size:17px}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(120,180,255,.55), transparent 60%),
    radial-gradient(700px 380px at -10% 110%, rgba(47,123,255,.5), transparent 60%),
    linear-gradient(120deg,#0B2A8E 0%,#1D46D8 45%,#2F7BFF 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(2px 2px at 12% 30%, rgba(255,255,255,.5) 50%, transparent 51%),
    radial-gradient(2px 2px at 30% 70%, rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(2px 2px at 60% 20%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(2px 2px at 80% 60%, rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(2px 2px at 90% 25%, rgba(255,255,255,.45) 50%, transparent 51%);
}
.hero::after{
  content:"";position:absolute;left:-10%;right:-10%;bottom:-90px;height:180px;
  background:radial-gradient(60% 100% at 50% 0%, rgba(255,255,255,.16), transparent 70%);
  border-radius:50% 50% 0 0;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;
  gap:56px;align-items:center;padding:72px 0 96px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;letter-spacing:.5px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  border-radius:999px;padding:6px 16px;margin-bottom:22px;
}
.hero h1{
  font-size:44px;line-height:1.28;margin:0 0 18px;font-weight:800;letter-spacing:.5px;
  text-wrap:balance;
}
.hero h1 .hl{
  background:linear-gradient(90deg,#9ED4FF,#DDEBFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{font-size:18px;color:rgba(255,255,255,.88);margin:0 0 30px;max-width:34em}
.hero-points{list-style:none;margin:0 0 34px;padding:0;display:grid;gap:12px}
.hero-points li{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.92);font-size:16px}
.hero-points svg{flex-shrink:0;margin-top:5px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 预约表单卡 ---------- */
.lead-card{
  background:#fff;border-radius:18px;box-shadow:var(--shadow-lg);
  padding:34px 32px;color:var(--ink);
}
.lead-card h2{margin:0 0 6px;font-size:23px;text-align:center;color:var(--ink)}
.lead-card .sub{margin:0 0 24px;text-align:center;color:var(--ink-2);font-size:14px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);background:#F6F8FC;border-radius:10px;
  padding:13px 14px;font-size:15px;font-family:inherit;color:var(--ink);
  transition:border-color .15s,box-shadow .15s;
}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(47,123,255,.15);
  background:#fff;
}
.field input::placeholder,.field textarea::placeholder{color:#A6B0C3}
.hp-field{position:absolute;left:-9999px;top:-9999px}
.lead-note{margin:14px 0 0;font-size:12.5px;color:#8B94A8;text-align:center}
.lead-note a{color:var(--blue-600);font-weight:600}

/* ---------- 数据条 ---------- */
.stats-strip{background:#fff;padding:34px 0;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats-grid b{display:block;font-size:30px;color:var(--blue-600);font-weight:800}
.stats-grid span{color:var(--ink-2);font-size:14px}

/* ---------- 通用 section ---------- */
section.block{padding:76px 0}
section.block.soft{background:var(--bg-soft)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head .kicker{
  display:inline-block;color:var(--blue-600);font-size:13.5px;font-weight:700;
  letter-spacing:2px;margin-bottom:10px;
}
.sec-head h2{font-size:31px;margin:0 0 12px;color:var(--ink)}
.sec-head p{color:var(--ink-2);margin:0}

/* 服务卡片 */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;box-shadow:var(--shadow-md);
  transition:transform .18s,box-shadow .18s;display:flex;flex-direction:column;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(13,42,140,.14)}
.svc-icon{
  width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue-100),#DCE9FF);color:var(--blue-600);margin-bottom:18px;
}
.svc-card h3{margin:0 0 10px;font-size:19px}
.svc-card h3 a{color:var(--ink)}
.svc-card p{margin:0 0 14px;color:var(--ink-2);font-size:14.5px;flex:1}
.svc-card .more{font-size:14.5px;font-weight:600}

/* 流程 */
.flow3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;position:relative;box-shadow:var(--shadow-md);
}
.step i{
  font-style:normal;display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:50%;color:#fff;font-weight:800;font-size:17px;
  background:linear-gradient(135deg,var(--blue-600),var(--blue-500));margin-bottom:16px;
}
.step h3{margin:0 0 8px;font-size:18px}
.step p{margin:0;color:var(--ink-2);font-size:14.5px}

/* 差异化 */
.diff{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.diff-card{background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--line)}
.diff-card h3{margin:0 0 10px;font-size:17px}
.diff-card p{margin:0;color:var(--ink-2);font-size:14.5px}
.diff-card.win{border-color:var(--blue-500);background:linear-gradient(180deg,#F3F8FF,#fff)}
.diff-card.win h3{color:var(--blue-600)}

/* 品牌速查 */
.brand-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue-600);
  border-radius:var(--radius);padding:32px 34px;box-shadow:var(--shadow-md);
}
.brand-card h2{margin:0 0 12px;font-size:22px}
.brand-card>p{margin:0 0 14px;color:var(--ink-2)}
.brand-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.brand-list li{font-size:15px;color:var(--ink-2)}
.brand-list strong{color:var(--ink)}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto;display:grid;gap:14px}
.faq{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 26px;
}
.faq h3{margin:0 0 8px;font-size:16.5px;color:var(--ink)}
.faq p{margin:0;color:var(--ink-2);font-size:14.5px}
.faq-more{text-align:center;margin-top:26px}

/* CTA band */
.cta-band{
  background:linear-gradient(120deg,#0B2A8E,#1D46D8 55%,#2F7BFF);color:#fff;
  padding:64px 0;text-align:center;
}
.cta-band h2{font-size:30px;margin:0 0 12px}
.cta-band p{color:rgba(255,255,255,.85);margin:0 0 28px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0D1730;color:#B9C3DB;font-size:14.5px}
.footer-grid{
  display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px;
}
.site-footer .fh{color:#fff;font-weight:700;font-size:15.5px;margin:0 0 14px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.site-footer a{color:#B9C3DB}
.site-footer a:hover{color:#fff}
.footer-logo{width:170px;height:auto;border-radius:8px;margin-bottom:14px;background:#fff;padding:6px}
.site-footer strong{color:#fff}
.icp-footer{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:13px;color:#7E8AA8;
}
.icp-footer a{color:#7E8AA8}

/* ---------- 右侧悬浮工具 ---------- */
.float-tools{
  position:fixed;right:16px;bottom:18%;z-index:40;display:grid;gap:10px;
}
.float-tools a{
  display:flex;flex-direction:column;align-items:center;gap:4px;width:66px;padding:12px 6px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  color:var(--ink-2);font-size:12px;text-align:center;box-shadow:var(--shadow-md);
}
.float-tools a:hover{text-decoration:none;color:var(--blue-600)}
.float-tools svg{color:var(--blue-600)}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:52px 0 72px}
  .hero h1{font-size:34px}
  .main-nav{display:none}
  .header-phone span{display:none}
  .cards3,.flow3,.diff{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .float-tools{display:none}
}
@media (max-width:560px){
  .hero h1{font-size:28px}
  .lead-card{padding:26px 20px}
  .sec-head h2{font-size:25px}
  .footer-grid{grid-template-columns:1fr}
  .header-cta .btn{padding:8px 14px;font-size:13px}
}