:root {
  --primary: #1267ff;
  --primary-dark: #0647c8;
  --primary-soft: #e9f2ff;
  --cyan: #23c4ff;
  --navy: #071a3a;
  --text: #12213f;
  --muted: #66718c;
  --line: #dce8ff;
  --card: rgba(255, 255, 255, 0.88);
  --shadow: 0 18px 45px rgba(22, 94, 210, 0.16);
  --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: #f7fbff;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 5%, rgba(38, 168, 255, 0.18), transparent 24rem),
    radial-gradient(circle at 88% 18%, rgba(37, 104, 255, 0.18), transparent 28rem),
    linear-gradient(180deg, #f7fbff 0%, #ffffff 48%, #f4f9ff 100%);
}
.container { width: min(1180px, calc(100% - 44px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 50; height: 82px; display: flex; align-items: center;
  background: rgba(255,255,255,.88); backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(190,213,255,.62); box-shadow: 0 10px 28px rgba(11,56,140,.06);
}
.nav-wrap { display:flex; align-items:center; justify-content:space-between; gap:24px; }
.brand { display:flex; align-items:center; gap:12px; min-width:0; }
.logo-mark { width:54px; height:54px; flex:0 0 auto; filter: drop-shadow(0 8px 14px rgba(18,103,255,.24)); }
.brand-title { margin:0; font-size:23px; line-height:1.08; letter-spacing:.02em; font-weight:800; color:#111c36; white-space:nowrap; }
.brand-subtitle { margin-top:4px; font-size:10px; letter-spacing:.12em; color:#4f5c77; text-transform:uppercase; white-space:nowrap; }
.nav { display:flex; align-items:center; gap:34px; font-size:16px; font-weight:700; color:#1c2941; }
.nav a:not(.nav-cta) { position:relative; padding:8px 0; }
.nav a:not(.nav-cta)::after { content:""; position:absolute; left:0; bottom:0; width:0; height:3px; border-radius:999px; background:linear-gradient(90deg,var(--primary),var(--cyan)); transition:width .25s ease; }
.nav a:not(.nav-cta):hover::after { width:100%; }
.nav-cta { padding:12px 22px; color:#fff; border-radius:12px; background:linear-gradient(135deg,#0a74ff,#0751de); box-shadow:0 10px 22px rgba(18,103,255,.24); }
.mobile-menu { display:none; border:0; background:#eef6ff; color:var(--primary); width:42px; height:42px; border-radius:12px; }
.mobile-menu img { width:22px; height:22px; }
.hero { position:relative; min-height:700px; display:grid; align-items:center; overflow:hidden; background:linear-gradient(120deg,rgba(255,255,255,.68),rgba(227,241,255,.58)), radial-gradient(circle at 78% 22%,rgba(255,255,255,.92),transparent 8rem), linear-gradient(135deg,#f8fbff 0%,#e8f3ff 45%,#d5eaff 100%); border-bottom:1px solid #e8f0ff; }
.hero::before { content:""; position:absolute; inset:0; background:linear-gradient(110deg,transparent 0%,transparent 32%,rgba(255,255,255,.86) 33%,transparent 34%,transparent 100%), repeating-linear-gradient(150deg,rgba(23,107,255,.08) 0 2px,transparent 2px 52px); transform:skewY(-2deg) translateY(20px); opacity:.65; pointer-events:none; }
.hero::after { content:""; position:absolute; right:-120px; bottom:-220px; width:760px; height:560px; background:radial-gradient(ellipse,rgba(17,100,255,.24),transparent 66%); filter:blur(2px); pointer-events:none; }
.hero-grid { position:relative; z-index:1; display:grid; grid-template-columns:1fr .92fr; gap:56px; align-items:center; padding:76px 0 62px; }
.hero-copy { max-width:590px; }
.hero-title { margin:0; font-size:clamp(42px,5vw,68px); line-height:1.12; letter-spacing:-.05em; font-weight:900; color:#111b34; }
.hero-title span { background:linear-gradient(120deg,#075bff 0%,#13a6ff 100%); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero-desc { margin:24px 0 34px; font-size:20px; line-height:1.8; color:#4f5d7a; max-width:540px; }
.actions { display:flex; align-items:center; gap:20px; flex-wrap:wrap; }
.btn { border:0; cursor:pointer; display:inline-flex; align-items:center; justify-content:center; gap:10px; min-height:58px; padding:0 28px; border-radius:14px; font-weight:800; font-size:19px; transition:transform .22s ease, box-shadow .22s ease, background .22s ease; }
.btn img { width:24px; height:24px; }
.btn:hover { transform:translateY(-2px); }
.btn-primary { color:#fff; background:linear-gradient(135deg,#00a9ff 0%,#1267ff 56%,#073ed0 100%); box-shadow:0 18px 34px rgba(18,103,255,.32); }
.btn-primary:hover { box-shadow:0 22px 42px rgba(18,103,255,.42); }
.btn-outline { color:var(--primary-dark); background:rgba(255,255,255,.74); border:2px solid rgba(18,103,255,.72); box-shadow:0 14px 28px rgba(18,103,255,.08); }
.feature-pills { display:flex; align-items:center; gap:28px; flex-wrap:wrap; margin-top:38px; color:#49607e; font-weight:700; }
.pill { display:inline-flex; align-items:center; gap:9px; white-space:nowrap; }
.pill img { width:20px; height:20px; }
.visual-stage { position:relative; min-height:610px; display:flex; align-items:center; justify-content:flex-end; }
.phone-wrap { position:relative; margin-right:20px; }
.phone-base { position:absolute; left:50%; bottom:-44px; width:360px; height:100px; transform:translateX(-50%); }
.phone { position:relative; width:296px; height:604px; border-radius:42px; padding:13px; background:linear-gradient(135deg,#12151e,#343945 52%,#05070a); box-shadow:0 34px 56px rgba(11,31,73,.30), inset 0 0 0 2px rgba(255,255,255,.1); transform:rotate(-1.2deg); }
.phone-screen { position:relative; height:100%; border-radius:32px; background:linear-gradient(180deg,#fbfdff 0%,#f2f7ff 100%); overflow:hidden; padding:17px 18px 12px; }
.dynamic-island { position:absolute; top:9px; left:50%; width:88px; height:24px; transform:translateX(-50%); border-radius:999px; background:#050608; z-index:2; }
.status { display:flex; justify-content:space-between; font-size:12px; font-weight:800; color:#151a24; margin-bottom:42px; }
.app-top { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:18px; }
.app-top h3 { margin:0; font-size:22px; line-height:1.1; }
.app-top p { margin:6px 0 0; font-size:12px; color:#697895; }
.mini-logo { width:44px; height:44px; }
.app-banner { display:flex; align-items:center; justify-content:space-between; padding:15px; margin-bottom:16px; border-radius:18px; color:#fff; background:linear-gradient(135deg,#116bff 0%,#23c4ff 100%); box-shadow:0 15px 25px rgba(20,112,255,.24); }
.app-banner b { display:block; font-size:14px; }
.app-banner span { font-size:11px; opacity:.86; }
.app-cube { width:52px; height:52px; transform:rotate(12deg); }
.app-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.app-tile { min-height:91px; padding:13px 10px 10px; border-radius:17px; background:#fff; border:1px solid rgba(210,225,255,.82); box-shadow:0 10px 18px rgba(24,82,170,.08); text-align:center; font-size:12px; font-weight:800; color:#263555; }
.tile-icon { width:40px; height:40px; display:grid; place-items:center; margin:0 auto 8px; border-radius:13px; box-shadow:0 10px 16px rgba(0,0,0,.09); }
.tile-icon img { width:23px; height:23px; }
.bg-blue { background:linear-gradient(135deg,#0a76ff,#3157ff); }
.bg-green { background:linear-gradient(135deg,#1edc9e,#14a45a); }
.bg-purple { background:linear-gradient(135deg,#7b65ff,#6245e8); }
.bg-cyan { background:linear-gradient(135deg,#28d3ff,#1688df); }
.bg-orange { background:linear-gradient(135deg,#ffba39,#ff7612); }
.bg-violet { background:linear-gradient(135deg,#a26dff,#5b50dc); }
.app-nav { position:absolute; left:18px; right:18px; bottom:10px; height:52px; border-radius:17px 17px 26px 26px; display:grid; grid-template-columns:repeat(4,1fr); align-items:center; color:#9ba7b9; background:rgba(255,255,255,.94); border-top:1px solid #e5edff; font-size:10px; font-weight:800; }
.app-nav span { display:flex; flex-direction:column; align-items:center; gap:2px; }
.app-nav img { width:17px; height:17px; opacity:.72; }
.app-nav span:first-child { color:var(--primary); }
.app-nav span:first-child img { opacity:1; }
.qr-modal-preview { position:absolute; left:-260px; top:215px; width:260px; padding:24px 22px 20px; border-radius:24px; background:rgba(255,255,255,.96); box-shadow:0 28px 60px rgba(15,59,141,.20); text-align:center; border:1px solid rgba(218,230,255,.95); backdrop-filter:blur(14px); }
.qr-close { position:absolute; right:16px; top:12px; border:0; background:none; color:#95a1b9; font-size:22px; cursor:pointer; }
.download-icon { width:54px; height:54px; margin:0 auto 12px; border-radius:50%; display:grid; place-items:center; color:var(--primary); background:#eef6ff; box-shadow:inset 0 0 0 1px #d7e8ff,0 10px 20px rgba(18,103,255,.14); }
.download-icon img { width:30px; height:30px; }
.qr-modal-preview h3 { margin:0; font-size:22px; }
.qr-modal-preview p { margin:6px 0 16px; color:var(--primary); font-weight:800; }
.qr-code-img { width:176px; height:176px; margin:0 auto 13px; display:block; border-radius:12px; }
.qr-safe { font-size:12px; color:#71809e; display:flex; align-items:center; justify-content:center; gap:5px; }
.float-cube,.float-orb { position:absolute; pointer-events:none; opacity:.88; filter:drop-shadow(0 18px 24px rgba(50,120,220,.16)); }
.float-cube { width:72px; height:72px; }
.cube-1 { right:-24px; top:140px; }
.cube-2 { left:-34px; bottom:92px; width:52px; height:52px; transform:rotate(-18deg); }
.float-orb { width:34px; height:34px; right:18px; top:84px; }
.section { position:relative; padding:64px 0; }
.section-title { margin:0 0 34px; text-align:center; font-size:34px; line-height:1.2; font-weight:900; color:#101d39; }
.section-title::after { content:""; display:block; width:48px; height:5px; border-radius:999px; margin:12px auto 0; background:linear-gradient(90deg,#0e6dff,#20c3ff); }
.intro-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:26px; }
.intro-card,.tool-card,.contact-card { position:relative; background:var(--card); border:1px solid rgba(210,225,255,.86); border-radius:var(--radius); box-shadow:0 16px 38px rgba(23,69,150,.08); overflow:hidden; }
.intro-card { min-height:248px; padding:36px 28px 28px; text-align:center; }
.intro-card::before { content:""; position:absolute; inset:-30% -10% auto; height:130px; background:radial-gradient(circle,rgba(21,126,255,.12),transparent 68%); }
.card-icon { width:78px; height:78px; margin:0 auto 22px; display:grid; place-items:center; border-radius:50%; background:#eef6ff; }
.card-icon img { width:42px; height:42px; }
.intro-card h3,.tool-card h3,.contact-card h3 { margin:0 0 12px; font-size:22px; font-weight:900; }
.intro-card p,.tool-card p,.contact-card p { margin:0; color:#61708e; line-height:1.75; }
.tools-grid { display:grid; grid-template-columns:repeat(6,1fr); gap:18px; }
.tool-card { min-height:230px; padding:32px 18px 26px; text-align:center; transition:transform .22s ease, box-shadow .22s ease; }
.tool-card:hover { transform:translateY(-5px); box-shadow:0 24px 48px rgba(23,69,150,.13); }
.tool-icon { width:64px; height:64px; margin:0 auto 18px; border-radius:18px; display:grid; place-items:center; }
.tool-icon img { width:34px; height:34px; }
.arrow-circle { width:26px; height:26px; display:grid; place-items:center; margin:18px auto 0; border-radius:50%; border:1px solid #cbdaf4; color:#8a9bb8; font-size:24px; line-height:1; }
.contact-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.contact-card { min-height:124px; padding:24px; display:flex; align-items:center; gap:18px; }
.contact-icon { width:58px; height:58px; flex:0 0 auto; border-radius:17px; display:grid; place-items:center; }
.contact-icon img { width:31px; height:31px; }
.contact-card h3 { font-size:17px; margin-bottom:6px; }
.contact-card b { display:block; font-size:17px; color:#21304e; margin-bottom:4px; }
.footer { padding:40px 0 28px; background:radial-gradient(circle at 10% 0%,rgba(38,168,255,.25),transparent 28rem), linear-gradient(135deg,#03152f 0%,#063168 100%); color:#fff; }
.footer-top { display:flex; align-items:center; gap:18px; padding-bottom:26px; }
.footer .logo-mark { width:66px; height:66px; }
.footer-company { margin:0 0 8px; font-size:31px; }
.footer-address { margin:0; color:#d8e8ff; line-height:1.6; }
.license-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:0; border:1px dashed rgba(222,238,255,.35); border-radius:18px; overflow:hidden; }
.license-item { min-height:92px; display:flex; align-items:center; gap:14px; padding:20px; border-right:1px dashed rgba(222,238,255,.28); }
.license-item:last-child { border-right:0; }
.license-badge { width:42px; height:42px; border-radius:50%; background:rgba(255,255,255,.14); display:grid; place-items:center; }
.license-badge img { width:24px; height:24px; filter:brightness(0) invert(1); opacity:.95; }
.license-item b { display:block; margin-bottom:5px; }
.license-item span { color:#cbdcf6; font-size:13px; }
.footer-links { display:flex; align-items:center; justify-content:center; gap:22px; margin:30px 0 12px; color:#d9e8ff; }
.copyright { margin:0; text-align:center; color:#b7c9e7; font-size:13px; }
.modal-mask { position:fixed; inset:0; z-index:100; display:none; align-items:center; justify-content:center; padding:24px; background:rgba(4,16,42,.54); backdrop-filter:blur(12px); }
.modal-mask.active { display:flex; }
.modal-card { width:min(400px,100%); position:relative; padding:34px 30px 30px; text-align:center; border-radius:28px; background:rgba(255,255,255,.98); box-shadow:0 34px 90px rgba(0,0,0,.22); border:1px solid rgba(218,230,255,.95); }
.modal-card .logo-mark { width:58px; height:58px; margin-bottom:12px; }
.modal-card h2 { margin:0 0 8px; font-size:28px; }
.modal-card p { margin:0 0 20px; color:#66718c; }
.modal-card .qr-code-img { width:218px; height:218px; }
.modal-close { position:absolute; right:18px; top:14px; border:0; background:none; font-size:28px; color:#9aa7bd; cursor:pointer; }
@media (max-width: 1020px) {
  .nav { display:none; }
  .mobile-menu { display:grid; place-items:center; }
  .hero-grid { grid-template-columns:1fr; padding-top:54px; }
  .visual-stage { min-height:560px; justify-content:center; }
  .qr-modal-preview { left:50%; transform:translateX(-105%); top:230px; }
  .intro-grid,.contact-grid { grid-template-columns:repeat(2,1fr); }
  .tools-grid { grid-template-columns:repeat(3,1fr); }
  .license-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width: 640px) {
  .container { width:min(100% - 30px, 1180px); }
  .site-header { height:74px; }
  .brand-title { font-size:18px; }
  .brand-subtitle { display:none; }
  .logo-mark { width:44px; height:44px; }
  .hero { min-height:auto; }
  .hero-grid { gap:18px; padding:42px 0 46px; }
  .hero-desc { font-size:16px; }
  .btn { width:100%; }
  .feature-pills { gap:16px; margin-top:24px; font-size:14px; }
  .visual-stage { min-height:610px; transform:scale(.9); transform-origin:top center; }
  .qr-modal-preview { left:50%; top:220px; transform:translateX(-50%); z-index:4; }
  .phone-wrap { margin-right:0; }
  .intro-grid,.tools-grid,.contact-grid,.license-grid { grid-template-columns:1fr; }
  .footer-top { align-items:flex-start; }
  .footer-company { font-size:22px; }
  .license-item { border-right:0; border-bottom:1px dashed rgba(222,238,255,.28); }
  .license-item:last-child { border-bottom:0; }
  .footer-links { flex-wrap:wrap; gap:12px; }
}