/* ============================================================
   花生加科技官网 · 全站样式
   品牌色取自 logo（实测）：主蓝 #2088F8 / 辅黄 #F8D830 / 点缀绿 #30F8A0
   ============================================================ */
:root{
  --brand:#2088F8;
  --brand-deep:#0F5CB8;
  --navy:#0E2A47;
  --ink:#14202E;
  --ink-2:#46536A;
  --ink-3:#7B8593;
  --accent:#F8D830;
  --accent-deep:#B98F06;
  --mint:#2ED593;
  --bg:#FFFFFF;
  --surface:#F5F9FE;
  --line:#E3EAF2;
  --radius:14px;
  --shadow:0 10px 30px rgba(14,42,71,.08);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
.wrap{max-width:1080px;margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header .bar{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand img{width:40px;height:40px;}
.brand b{color:var(--brand);}
.nav{display:flex;align-items:center;gap:6px;}
.nav a{
  color:var(--ink-2);font-size:15px;padding:8px 14px;border-radius:8px;
  transition:color .2s,background .2s;
}
.nav a:hover{color:var(--brand);background:var(--surface);}
.nav a.active{color:var(--brand-deep);font-weight:650;background:var(--surface);}
.nav .cta{
  margin-left:10px;background:var(--brand);color:#fff;font-weight:600;
  padding:9px 20px;border-radius:100px;
}
.nav .cta:hover{background:var(--brand-deep);color:#fff;}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer;}
.burger span{display:block;width:18px;height:2px;background:var(--ink);margin:4px 0;border-radius:2px;}

/* ---------- hero（首页） ---------- */
.hero{
  background:
    radial-gradient(900px 420px at 85% -10%,rgba(32,136,248,.14),transparent 60%),
    radial-gradient(700px 380px at -10% 110%,rgba(248,216,48,.16),transparent 55%),
    linear-gradient(180deg,#FBFDFF 0%,#F1F7FE 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero .grid{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;padding:84px 0 72px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand-deep);font-weight:700;
  background:#fff;border:1px solid var(--line);border-radius:100px;
  padding:6px 16px;margin-bottom:22px;box-shadow:var(--shadow);
}
.hero h1{font-size:44px;line-height:1.32;font-weight:750;letter-spacing:-.01em;margin-bottom:18px;}
.hero h1 .u{
  background-image:linear-gradient(transparent 68%,var(--accent) 68%);
  background-repeat:no-repeat;
}
.hero .sub{font-size:18px;color:var(--ink-2);max-width:620px;margin-bottom:30px;}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-block;font-weight:650;font-size:16px;
  padding:13px 30px;border-radius:100px;transition:.2s;
}
.btn.primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(32,136,248,.35);}
.btn.primary:hover{background:var(--brand-deep);transform:translateY(-1px);}
.btn.ghost{border:1.5px solid var(--brand);color:var(--brand-deep);background:#fff;}
.btn.ghost:hover{background:var(--surface);}
.hero .art{position:relative;display:flex;justify-content:center;}
.hero .art img{
  width:min(320px,70vw);
  filter:drop-shadow(0 24px 40px rgba(14,42,71,.16));
  animation:float 5s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.hero .art::before{
  content:"";position:absolute;inset:8% 12%;
  background:radial-gradient(circle at 50% 55%,rgba(32,136,248,.16),transparent 65%);
  border-radius:50%;
}

/* ---------- 通用 section ---------- */
section.block{padding:76px 0;}
section.block.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head .tag{
  font-size:13px;letter-spacing:.16em;color:var(--brand-deep);font-weight:700;margin-bottom:10px;
}
.sec-head h2{font-size:30px;line-height:1.45;font-weight:700;color:var(--ink);}
.sec-head p{color:var(--ink-2);margin-top:12px;font-size:16.5px;}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 20px;text-align:center;box-shadow:var(--shadow);
}
.stat .n{font-size:34px;font-weight:750;color:var(--brand);line-height:1.2;}
.stat .n small{font-size:18px;font-weight:700;}
.stat .t{font-size:14px;color:var(--ink-3);margin-top:6px;letter-spacing:.06em;}

/* 业务卡 */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;position:relative;overflow:hidden;
  transition:transform .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(14,42,71,.12);}
.card::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:var(--brand);}
.card .num{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);margin-bottom:10px;}
.card h3{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:10px;}
.card p{font-size:15px;color:var(--ink-2);}
.card .fix{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:14px;color:var(--ink-3);line-height:1.8;
}
.card .fix b{color:var(--brand-deep);font-weight:650;}

/* 理念：三步转化 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;position:relative;
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-size:13px;font-weight:750;color:var(--brand);
  letter-spacing:.1em;
}
.step h4{font-size:18px;font-weight:700;margin:8px 0 8px;color:var(--navy);}
.step p{font-size:15px;color:var(--ink-2);}
.step .arrow{
  position:absolute;right:-16px;top:50%;transform:translateY(-50%);
  color:var(--brand);font-size:20px;font-weight:700;z-index:2;
}
.steps .step:last-child .arrow{display:none;}

/* 三要素 */
.tri{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tri .cell{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
}
.tri .cell .t{font-size:16.5px;font-weight:700;color:var(--brand-deep);margin-bottom:8px;}
.tri .cell .d{font-size:14.5px;color:var(--ink-2);}

/* 深色引言带 */
.band{
  background:linear-gradient(135deg,var(--navy) 0%,#123A63 100%);
  border-radius:18px;color:#fff;padding:44px 46px;
}
.band .k{font-size:12px;letter-spacing:.16em;color:#8FC1EF;margin-bottom:14px;font-weight:700;}
.band p{font-size:21px;line-height:1.8;font-weight:500;}
.band p b{color:var(--accent);}

/* 内页页头 */
.page-hero{
  background:
    radial-gradient(700px 300px at 90% -20%,rgba(32,136,248,.13),transparent 60%),
    linear-gradient(180deg,#FBFDFF,#F1F7FE);
  border-bottom:1px solid var(--line);padding:64px 0 52px;
}
.page-hero h1{font-size:36px;font-weight:750;line-height:1.4;margin-bottom:12px;}
.page-hero p{font-size:17px;color:var(--ink-2);max-width:760px;}

/* 正文排版（关于我们/政策页） */
.prose{max-width:820px;}
.prose h3{font-size:21px;font-weight:700;color:var(--navy);margin:38px 0 12px;display:flex;gap:10px;align-items:baseline;}
.prose h3 .no{font-size:13px;color:var(--brand);font-weight:750;}
.prose p{font-size:16px;color:var(--ink-2);margin-bottom:14px;}
.prose p strong{color:var(--ink);font-weight:650;}
.prose ul{margin:0 0 14px 22px;color:var(--ink-2);font-size:15.5px;}
.prose ul li{margin-bottom:6px;}
.prose .hl{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:10px;padding:18px 22px;font-size:15.5px;color:var(--ink-2);margin:18px 0;
}

/* 联系页 */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:stretch;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px;box-shadow:var(--shadow);
}
.contact-card h3{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:6px;}
.contact-card .row{display:flex;align-items:center;gap:12px;padding:16px 0;border-bottom:1px dashed var(--line);}
.contact-card .row:last-of-type{border-bottom:none;}
.contact-card .row .k{font-size:13px;color:var(--ink-3);width:64px;flex:none;letter-spacing:.08em;}
.contact-card .row .v{font-size:16px;color:var(--ink);font-weight:600;word-break:break-all;}
.mailto-btn{
  display:inline-block;margin-top:18px;background:var(--brand);color:#fff;font-weight:650;
  padding:12px 26px;border-radius:100px;transition:.2s;
}
.mailto-btn:hover{background:var(--brand-deep);}
.note{
  font-size:13.5px;color:var(--ink-3);background:var(--surface);
  border:1px dashed var(--line);border-radius:10px;padding:12px 16px;margin-top:16px;
}

/* 扫码联系 */
.qr-band{
  margin-top:26px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:34px;box-shadow:var(--shadow);
}
.qr-band .qr-head h3{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:6px;}
.qr-band .qr-head p{font-size:14.5px;color:var(--ink-3);}
.qr-items{display:flex;gap:28px;flex-wrap:wrap;margin-top:18px;}
.qr-item{
  flex:1;min-width:220px;display:flex;align-items:center;gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 22px;
}
.qr-item img{
  width:132px;height:132px;flex:none;background:#fff;
  border:1px solid var(--line);border-radius:10px;padding:6px;
}
.qr-item .qr-label{display:flex;flex-direction:column;gap:4px;}
.qr-item .qr-label b{font-size:18px;color:var(--navy);}
.qr-item .qr-label span{font-size:13.5px;color:var(--ink-3);letter-spacing:.05em;}

/* 页脚 */
.footer{background:var(--navy);color:#B9C6D6;margin-top:0;}
.footer .top{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px;padding:56px 0 40px;}
.footer .fbrand{display:flex;align-items:center;gap:12px;background:#fff;border-radius:12px;padding:10px 16px;width:fit-content;}
.footer .fbrand img{width:34px;height:34px;}
.footer .fbrand b{color:var(--ink);font-size:16px;}
.footer p{font-size:14px;line-height:2;margin-top:14px;}
.footer h5{color:#fff;font-size:14px;letter-spacing:.12em;margin-bottom:14px;font-weight:700;}
.footer a{color:#B9C6D6;font-size:14px;display:block;padding:4px 0;transition:color .2s;}
.footer a:hover{color:#fff;}
.footer .bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#7E93AB;
}
.footer .bottom a{display:inline;color:#9FB4CA;font-size:13px;}
.footer .bottom a:hover{color:#fff;}

/* reveal 动画（渐进增强：仅 JS 可用时才初始隐藏） */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:920px){
  .hero .grid{grid-template-columns:1fr;padding:56px 0 48px;}
  .hero .art{order:-1;}
  .hero .art img{width:min(200px,52vw);}
  .hero h1{font-size:32px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .cards,.steps,.tri{grid-template-columns:1fr;}
  .step .arrow{display:none;}
  .contact-grid{grid-template-columns:1fr;}
  .footer .top{grid-template-columns:1fr;gap:28px;}
  .band{padding:30px 24px;}
  .band p{font-size:18px;}
  .nav{
    display:none;position:absolute;top:68px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:12px 20px 18px;gap:2px;
    box-shadow:0 20px 40px rgba(14,42,71,.12);
  }
  .nav.open{display:flex;}
  .nav a{padding:12px 14px;font-size:16px;}
  .nav .cta{margin:10px 0 0;text-align:center;}
  .burger{display:block;}
  .wrap{padding:0 22px;}
  .page-hero h1{font-size:28px;}
}
@media print{
  .header,.footer .top{display:none;}
}