/* ==========================================================================
   QuickQ 官网全站样式
   适配：Windows / Mac / Android / iOS / Linux · 全响应式 · 暗色+亮色结合
   ========================================================================== */

:root{
  --brand:#2563eb;
  --brand-2:#1d4ed8;
  --cyan:#06b6d4;
  --violet:#7c3aed;
  --grad:linear-gradient(120deg,#2563eb 0%,#06b6d4 50%,#7c3aed 100%);
  --dark:#070b18;
  --dark-2:#0b1220;
  --dark-3:#0f1830;
  --ink:#0f172a;
  --muted:#5b6b85;
  --line:#e5eaf3;
  --line-dark:rgba(255,255,255,.1);
  --bg:#ffffff;
  --bg-soft:#f5f8ff;
  --card:#ffffff;
  --radius:18px;
  --shadow-sm:0 4px 18px rgba(15,23,42,.06);
  --shadow:0 18px 50px rgba(15,23,42,.12);
  --shadow-blue:0 16px 40px rgba(37,99,235,.28);
  --max:1180px;
  --ease:cubic-bezier(.4,0,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
section{position:relative}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.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 var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:.5px}
.brand .logo{
  width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:17px;box-shadow:0 6px 16px rgba(37,99,235,.35);
}
.brand span em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.menu{display:flex;align-items:center;gap:6px}
.menu a{
  padding:8px 14px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);transition:.2s var(--ease);
}
.menu a:hover{color:var(--brand);background:#eef3ff}
.menu a.active{color:var(--brand);background:#e8efff;font-weight:600}
.nav-cta{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;
  padding:11px 22px;border-radius:12px;transition:.22s var(--ease);white-space:nowrap;line-height:1.2;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-blue)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(37,99,235,.4)}
.btn-ghost{background:#eef3ff;color:var(--brand)}
.btn-ghost:hover{background:#e0eaff}
.btn-light{background:#fff;color:var(--brand)}
.btn-outline{border:1.5px solid var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px}
.btn-block{width:100%}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;background:#eef3ff;place-items:center;flex-direction:column;gap:5px}
.hamburger span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:.25s}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1200px 500px at 80% -10%,rgba(6,182,212,.18),transparent 60%),radial-gradient(900px 500px at 10% 0,rgba(124,58,237,.16),transparent 60%),var(--dark);color:#fff;padding:88px 0 0;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#bcd6ff;
  background:rgba(37,99,235,.16);border:1px solid rgba(37,99,235,.35);padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:46px;line-height:1.18;letter-spacing:-1px;margin-bottom:20px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:#aeb9cf;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-trust{display:flex;gap:26px;flex-wrap:wrap;color:#8fa0bd;font-size:13.5px}
.hero-trust b{display:block;font-size:22px;color:#fff;font-weight:800}
.hero-visual{position:relative}
.hero-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:22px;
  padding:26px;backdrop-filter:blur(6px);
}
.app-screenshot{
  border-radius:14px;background:linear-gradient(160deg,#101a33,#1c2a50);border:1px solid rgba(255,255,255,.1);
  aspect-ratio:4/3;display:grid;place-items:center;
}
.hero-badges{margin-top:20px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.hero-badge{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:12px}
.hero-badge .ic{font-size:20px}
.hero-badge small{display:block;color:#8fa0bd;font-size:11.5px}
.hero-badge b{font-size:14px}
.wave{display:block;width:100%;margin-top:-1px}

/* ---------- 通用区块 ---------- */
.sec{padding:84px 0}
.sec-soft{background:var(--bg-soft)}
.sec-head{max-width:680px;margin:0 auto 52px;text-align:center}
.sec-head.left{margin:0 0 40px;text-align:left}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--brand);text-transform:uppercase;margin-bottom:12px}
.sec-head h2{font-size:33px;line-height:1.25;letter-spacing:-.6px;margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16.5px}

.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);transition:.25s var(--ease)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card .icon{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;font-size:24px;margin-bottom:18px;background:linear-gradient(135deg,#eef3ff,#e8f7fb)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* ---------- 数据统计 ---------- */
.stats{background:var(--dark);color:#fff;padding:64px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;text-align:center}
.stat b{display:block;font-size:38px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:#9fb0ca;font-size:14.5px}
.stat .unit{font-size:20px}

/* ---------- 步骤 ---------- */
.step{position:relative;padding-left:0}
.step-num{width:40px;height:40px;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;display:grid;place-items:center;margin-bottom:16px}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:15px;overflow:hidden;transition:.2s}
.faq-item.open{box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16.5px;font-weight:600;text-align:left;color:var(--ink)}
.faq-q .plus{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:#eef3ff;color:var(--brand);display:grid;place-items:center;font-size:18px;transition:.25s;font-weight:700}
.faq-item.open .plus{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:15px}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px 30px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:.25s var(--ease)}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-card.hot{border:2px solid var(--brand);box-shadow:var(--shadow-blue)}
.price-card .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12.5px;font-weight:700;padding:4px 16px;border-radius:999px}
.price-card .plan{font-size:16px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1px}
.price-card .amount{font-size:46px;font-weight:800;letter-spacing:-1px;margin:14px 0 2px}
.price-card .amount small{font-size:16px;color:var(--muted);font-weight:500}
.price-card .period{color:var(--muted);font-size:13.5px;margin-bottom:20px}
.price-card ul{display:flex;flex-direction:column;gap:11px;margin:18px 0 26px;flex:1}
.price-card ul li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#33415c}
.price-card ul li::before{content:"✓";color:var(--cyan);font-weight:800;flex:0 0 auto}
.billing-toggle{display:flex;justify-content:center;gap:12px;align-items:center;margin-bottom:44px;font-weight:600}
.switch{width:54px;height:30px;border-radius:999px;background:#cbd5e1;position:relative;transition:.2s;cursor:pointer}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;transition:.25s var(--ease);box-shadow:0 2px 6px rgba(0,0,0,.2)}
.switch.on{background:var(--brand)}
.switch.on::after{transform:translateX(24px)}
.save{color:var(--brand);font-size:13px;font-weight:700;background:#eef3ff;padding:3px 10px;border-radius:999px}

/* ---------- 口碑 ---------- */
.review{border-radius:16px;padding:26px;border:1px solid var(--line);background:var(--card);display:flex;flex-direction:column;gap:14px}
.stars{color:#f59e0b;letter-spacing:2px;font-size:16px}
.review p{color:#33415c;font-size:15px;flex:1}
.review .who{display:flex;align-items:center;gap:12px}
.review .who .ava{width:42px;height:42px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700}
.review .who b{display:block;font-size:14.5px}
.review .who span{color:var(--muted);font-size:12.5px}

/* ---------- 下载卡片 ---------- */
.dl-card{display:flex;align-items:center;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:15px;background:var(--card);box-shadow:var(--shadow-sm);transition:.22s}
.dl-card:hover{border-color:var(--brand);transform:translateY(-3px)}
.dl-card .os{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,#eef3ff,#e8f7fb);display:grid;place-items:center;font-size:22px;flex:0 0 auto}
.dl-card b{display:block}
.dl-card span{color:var(--muted);font-size:13px}
.dl-card .btn{margin-left:auto}

/* ---------- CTA ---------- */
.cta{background:radial-gradient(900px 400px at 20% -20%,rgba(6,182,212,.25),transparent 60%),radial-gradient(900px 400px at 90% 120%,rgba(124,58,237,.28),transparent 60%),var(--dark);color:#fff;text-align:center;padding:96px 0;border-radius:0}
.cta h2{font-size:38px;letter-spacing:-.8px;margin-bottom:16px}
.cta p{color:#aeb9cf;max-width:560px;margin:0 auto 30px;font-size:16.5px}
.cta .hero-actions{justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#9fb0ca;padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:46px}
.footer-grid .brand{color:#fff;margin-bottom:16px}
.footer-grid .brand span{color:#fff}
.footer-grid p{font-size:14px;max-width:300px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer .f-links li{margin-bottom:10px}
.site-footer .f-links a{font-size:14px;transition:.15s}
.site-footer .f-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid var(--line-dark);padding-top:24px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:13px}
.footer-bottom .legal a{margin-left:18px}
.footer-bottom a:hover{color:#fff}

/* ---------- 面包屑/页头 ---------- */
.page-banner{background:radial-gradient(1000px 400px at 80% -10%,rgba(6,182,212,.16),transparent 60%),var(--dark);color:#fff;padding:70px 0 60px;text-align:center}
.page-banner h1{font-size:40px;letter-spacing:-.8px;margin-bottom:14px}
.page-banner p{color:#aeb9cf;max-width:640px;margin:0 auto;font-size:16.5px}
.breadcrumb{display:flex;justify-content:center;gap:8px;color:#8fa0bd;font-size:13.5px;margin-top:18px}
.breadcrumb a{color:#bcd6ff}
.breadcrumb a:hover{color:#fff}

/* ---------- 内容页排版 ---------- */
.prose{max-width:820px;margin:0 auto}
.prose h2{font-size:26px;margin:42px 0 16px}
.prose h3{font-size:19px;margin:30px 0 12px}
.prose p{color:#33415c;margin-bottom:16px}
.prose ul,.prose ol{margin:0 0 18px 22px}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{color:#33415c;margin-bottom:8px}
.prose a{color:var(--brand)}
.prose .muted-date{color:var(--muted);font-size:13.5px;text-align:center;margin-bottom:32px}

/* ---------- 徽章墙 ---------- */
.badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.badge-pill{background:#eef3ff;color:var(--brand-2);font-weight:600;font-size:13.5px;padding:8px 16px;border-radius:999px}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero h1{font-size:36px}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:2}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-cta .btn-ghost{display:none}
  .menu{
    position:fixed;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:14px 20px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    transform:translateY(-135%);transition:transform .3s var(--ease);z-index:99;
  }
  .menu.open{transform:translateY(0)}
  .menu a{padding:12px 14px}
  .hamburger{display:flex}
  .hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .hamburger.open span:nth-child(2){opacity:0}
  .hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding-top:64px}
  .hero h1{font-size:30px}
  .hero p.lead{font-size:16px}
  .sec{padding:60px 0}
  .sec-head h2{font-size:26px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stat b{font-size:30px}
  .page-banner h1{font-size:30px}
  .cta h2{font-size:28px}
  .hero-trust{justify-content:space-between}
}