:root {
  --primary: #2980FE;
  --primary-soft: #EAF3FF;
  --primary-pale: #F4F8FF;
  --bg: #F7FAFF;
  --white: #FFFFFF;
  --line: #E5ECF5;
  --text: #1F2937;
  --muted: #64748B;
  --deep: #0F172A;
  --shadow: 0 20px 60px rgba(15, 23, 42, .08);
  --soft-shadow: 0 12px 30px rgba(41, 128, 254, .10);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 42%, #FFFFFF 100%);
  overflow-x: hidden;
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.content-container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.gradient-bg { background: radial-gradient(circle at top left, rgba(41,128,254,.14), transparent 34%), linear-gradient(135deg, #FFFFFF 0%, #F4F8FF 100%); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(229,236,245,.88);
}
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.logo, .footer-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); letter-spacing: .02em; }
.logo img, .footer-logo img { width: 38px; height: 38px; border-radius: 12px; box-shadow: var(--soft-shadow); }
.main-nav { display: none; align-items: center; gap: 6px; }
.main-nav a { padding: 10px 12px; color: var(--muted); font-size: 14px; border-radius: 999px; transition: .2s ease; }
.main-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-toggle { width: 44px; height: 44px; border: 1px solid var(--line); background: var(--white); border-radius: 14px; display: grid; place-content: center; gap: 5px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--deep); border-radius: 999px; }
.mobile-nav { display: none; padding: 0 16px 16px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.mobile-nav.is-open { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mobile-nav a { padding: 12px 14px; border: 1px solid var(--line); border-radius: 16px; background: var(--primary-pale); color: var(--deep); font-size: 14px; }
.launch-hero { padding: 56px 0 34px; position: relative; overflow: hidden; }
.launch-hero::after { content: ""; position: absolute; right: -120px; top: 60px; width: 320px; height: 320px; border-radius: 50%; background: rgba(41,128,254,.11); filter: blur(4px); z-index: 0; }
.hero-grid { position: relative; z-index: 1; display: grid; gap: 34px; align-items: center; }
.eyebrow, .category-badge { display: inline-flex; align-items: center; width: fit-content; gap: 8px; padding: 8px 13px; border-radius: 999px; color: var(--primary); background: var(--primary-soft); border: 1px solid rgba(41,128,254,.15); font-weight: 700; font-size: 13px; }
.hero-copy h1, .sub-hero h1 { margin: 18px 0 16px; color: var(--deep); font-size: clamp(38px, 9vw, 72px); line-height: 1.06; letter-spacing: -.04em; }
.hero-copy p, .sub-hero p { margin: 0 0 24px; color: var(--muted); font-size: 17px; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin: 22px 0; }
.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 16px 34px rgba(41,128,254,.24);
  transition: transform .2s ease, box-shadow .2s ease;
  border: 0;
  cursor: pointer;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 22px 44px rgba(41,128,254,.28); }
.security-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.security-tags span, .pill { padding: 8px 12px; border-radius: 999px; background: var(--white); color: var(--muted); border: 1px solid var(--line); font-size: 13px; box-shadow: 0 8px 20px rgba(15,23,42,.04); }
.hero-visual, .app-showcase { position: relative; min-height: 380px; display: grid; place-items: center; }
.phone-stage { width: min(340px, 88%); padding: 18px; border-radius: 38px; background: linear-gradient(180deg, #FFFFFF, #EEF5FF); border: 1px solid var(--line); box-shadow: var(--shadow); }
.phone-stage img { border-radius: 28px; margin: auto; }
.float-label { position: absolute; padding: 10px 14px; background: rgba(255,255,255,.9); border: 1px solid var(--line); border-radius: 999px; color: var(--deep); font-size: 13px; box-shadow: var(--soft-shadow); backdrop-filter: blur(10px); }
.float-label strong { color: var(--primary); }
.float-label.one { top: 18px; left: 4px; }
.float-label.two { top: 92px; right: 0; }
.float-label.three { bottom: 92px; left: 0; }
.float-label.four { bottom: 26px; right: 10px; }
.highlight-bar { padding: 24px 0 46px; }
.highlight-grid { display: grid; gap: 14px; grid-template-columns: 1fr; }
.highlight-card, .mini-card, .risk-card, .faq-item, .category-card, .step-card, .notice-card, .launch-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 26px rgba(15,23,42,.04);
}
.highlight-card { padding: 18px; min-height: 150px; transition: .2s ease; }
.highlight-card:hover { transform: translateY(-3px); border-color: rgba(41,128,254,.30); }
.highlight-card small { display: inline-flex; color: var(--primary); font-weight: 800; margin-bottom: 8px; }
.highlight-card h3, .mini-card h3, .risk-card h3, .category-card h3, .step-card h3 { margin: 0 0 8px; color: var(--deep); line-height: 1.35; }
.highlight-card p, .mini-card p, .risk-card p, .category-card p, .step-card p, .notice-card p { margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.inline-link { color: var(--primary); font-weight: 800; font-size: 14px; }
.section-head { margin: 0 0 22px; display: grid; gap: 8px; }
.section-head.center { text-align: center; justify-items: center; }
.section-head h2 { margin: 0; color: var(--deep); font-size: clamp(28px, 6vw, 46px); line-height: 1.14; letter-spacing: -.03em; }
.section-head p { margin: 0; color: var(--muted); max-width: 720px; }
.feature-section { padding: 42px 0; }
.big-feature-card { padding: 22px; display: grid; gap: 24px; align-items: center; border-radius: var(--radius-xl); background: rgba(255,255,255,.86); border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; }
.wallet-feature { background: linear-gradient(135deg, #FFFFFF 0%, #F6FAFF 100%); }
.cold-wallet-feature { background: linear-gradient(135deg, #F6FAFF 0%, #FFFFFF 100%); }
.swap-feature { background: linear-gradient(135deg, #FFFFFF 0%, #F8FBFF 100%); }
.dapp-feature { background: linear-gradient(135deg, #F7FAFF 0%, #FFFFFF 100%); }
.feature-copy h2, .feature-copy h3 { margin: 0 0 12px; color: var(--deep); font-size: clamp(26px, 5vw, 42px); line-height: 1.15; letter-spacing: -.03em; }
.feature-copy p { color: var(--muted); margin: 0 0 18px; }
.feature-points { list-style: none; margin: 18px 0; padding: 0; display: grid; gap: 10px; }
.feature-points li { position: relative; padding-left: 28px; color: var(--text); }
.feature-points li::before { content: ""; position: absolute; left: 0; top: .66em; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px var(--primary-soft); }
.feature-media { position: relative; background: var(--primary-pale); border-radius: 28px; padding: 22px; min-height: 280px; display: grid; place-items: center; border: 1px solid var(--line); }
.feature-media img { max-height: 380px; object-fit: contain; filter: drop-shadow(0 18px 30px rgba(15,23,42,.10)); }
.feature-note { padding: 14px 16px; border-left: 4px solid var(--primary); background: var(--primary-pale); border-radius: 16px; color: var(--muted); font-size: 14px; }
.process-steps { padding: 54px 0; }
.steps-grid { display: grid; gap: 14px; }
.step-card { padding: 18px; position: relative; overflow: hidden; }
.step-num { width: 40px; height: 40px; display: grid; place-items: center; background: var(--primary); color: #fff; border-radius: 14px; font-weight: 900; margin-bottom: 14px; }
.risk-grid { display: grid; gap: 14px; }
.risk-card { padding: 18px; border-top: 4px solid var(--primary); }
.risk-card b { display: block; color: var(--deep); margin-bottom: 6px; }
.app-category-center { padding: 56px 0; }
.category-grid { display: grid; gap: 14px; }
.category-card { padding: 20px; min-height: 175px; }
.category-card .icon-dot { width: 42px; height: 42px; border-radius: 16px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-weight: 900; margin-bottom: 14px; }
.safety-panel { padding: 54px 0; background: linear-gradient(180deg, #F6FAFF, #FFFFFF); }
.faq-list { display: grid; gap: 12px; }
.faq-item { padding: 18px 20px; }
.faq-item h3 { margin: 0 0 6px; color: var(--deep); }
.faq-item p { margin: 0; color: var(--muted); }
.cta-section { padding: 52px 0 68px; }
.cta-card { text-align: center; padding: 32px 20px; border-radius: var(--radius-xl); background: radial-gradient(circle at top, rgba(41,128,254,.16), transparent 35%), #FFFFFF; border: 1px solid var(--line); box-shadow: var(--shadow); }
.cta-card h2 { margin: 0 0 12px; color: var(--deep); font-size: clamp(28px, 6vw, 44px); }
.cta-card p { margin: 0 auto 20px; max-width: 680px; color: var(--muted); }
.sub-hero { padding: 54px 0 34px; }
.page-layout { display: grid; gap: 24px; padding: 28px 0 64px; }
.article-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 22px; box-shadow: var(--shadow); }
.article-card h2 { color: var(--deep); margin: 0 0 12px; font-size: 26px; }
.article-card p { color: var(--muted); margin: 0 0 16px; }
.check-list { display: grid; gap: 10px; padding: 0; margin: 18px 0; list-style: none; }
.check-list li { padding: 14px 14px 14px 42px; border: 1px solid var(--line); border-radius: 18px; background: var(--primary-pale); position: relative; }
.check-list li::before { content: "✓"; position: absolute; left: 15px; top: 13px; color: var(--primary); font-weight: 900; }
.side-panel { display: grid; gap: 14px; align-content: start; }
.notice-card { padding: 18px; }
.notice-card h3 { margin: 0 0 10px; color: var(--deep); }
.download-panel { text-align: left; padding: 20px; background: linear-gradient(135deg, #FFFFFF, #F2F7FF); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--soft-shadow); }
.download-panel .download-btn { width: 100%; }
.two-col { display: grid; gap: 14px; }
.info-strip { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 0; }
.info-strip span { background: var(--primary-soft); color: var(--primary); border-radius: 999px; padding: 8px 12px; font-size: 13px; font-weight: 800; }
.about-grid { display: grid; gap: 16px; }
.download-flow { counter-reset: flow; display: grid; gap: 12px; }
.download-flow li { list-style: none; padding: 16px 16px 16px 58px; border: 1px solid var(--line); border-radius: 20px; background: var(--white); position: relative; }
.download-flow li::before { counter-increment: flow; content: counter(flow); position: absolute; left: 16px; top: 15px; width: 30px; height: 30px; border-radius: 12px; display: grid; place-items: center; background: var(--primary); color: #fff; font-weight: 900; }
.site-footer { background: #0F172A; color: rgba(255,255,255,.78); padding: 42px 0 0; }
.footer-grid { display: grid; gap: 26px; }
.footer-logo { color: #fff; }
.site-footer p { color: rgba(255,255,255,.65); margin: 12px 0 0; }
.site-footer h3 { color: #fff; margin: 0 0 12px; }
.site-footer a:not(.footer-logo) { display: block; color: rgba(255,255,255,.72); margin: 8px 0; }
.footer-bottom { margin-top: 32px; border-top: 1px solid rgba(255,255,255,.10); padding: 18px; text-align: center; color: rgba(255,255,255,.52); font-size: 13px; }
@media (min-width: 640px) {
  .highlight-grid, .category-grid, .risk-grid, .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col, .about-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 860px) {
  .nav-toggle { display: none; }
  .desktop-nav { display: flex; }
  .mobile-nav { display: none !important; }
  .launch-hero { padding: 76px 0 52px; }
  .hero-grid { grid-template-columns: 1.02fr .98fr; gap: 42px; }
  .highlight-grid { grid-template-columns: repeat(3, 1fr); }
  .big-feature-card { grid-template-columns: 1fr 1fr; padding: 34px; }
  .big-feature-card.reverse .feature-media { order: -1; }
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
  .risk-grid { grid-template-columns: repeat(3, 1fr); }
  .category-grid { grid-template-columns: repeat(4, 1fr); }
  .page-layout { grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
  .article-card { padding: 34px; }
  .footer-grid { grid-template-columns: 1.5fr .7fr .7fr; }
}
@media (min-width: 1120px) {
  .hero-copy h1 { font-size: 72px; }
  .phone-stage { width: 380px; }
  .hero-visual { min-height: 500px; }
  .feature-section { padding: 56px 0; }
}