:root {
  --primary: #2980FE;
  --primary-soft: #EAF3FF;
  --primary-light: #F4F8FF;
  --white: #FFFFFF;
  --gray-50: #F7F9FC;
  --gray-100: #EEF2F6;
  --gray-200: #DDE5EE;
  --gray-500: #687385;
  --gray-700: #2E3747;
  --gray-900: #131A27;
  --shadow: 0 20px 50px rgba(20, 56, 105, .08);
  --radius-lg: 28px;
  --radius-md: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  color: var(--gray-700);
  background: linear-gradient(180deg, #fff 0%, #f7fbff 45%, #fff 100%);
  line-height: 1.72;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(221,229,238,.8);
}
.nav-shell {
  width: min(1180px, calc(100% - 24px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--gray-900); }
.logo { width: 38px; height: 38px; border-radius: 12px; object-fit: cover; }
.brand-text { white-space: nowrap; letter-spacing: .02em; }
.nav-toggle {
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-700);
  border-radius: 999px;
  padding: 9px 14px;
  font-weight: 700;
}
.site-nav {
  position: absolute;
  top: 68px;
  left: 12px;
  right: 12px;
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.site-nav.is-open { display: flex; }
.site-nav a { padding: 10px 12px; border-radius: 14px; color: var(--gray-500); font-weight: 650; }
.site-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.launch-hero {
  position: relative;
  padding: 44px 0 28px;
  background:
    radial-gradient(circle at 18% 8%, rgba(41,128,254,.16), transparent 30%),
    radial-gradient(circle at 88% 18%, rgba(41,128,254,.10), transparent 34%);
}
.launch-hero .container {
  display: grid;
  gap: 28px;
  align-items: center;
}
.eyebrow, .category-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid rgba(41,128,254,.18);
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .06em;
}
.hero-copy h1, .page-hero h1 {
  margin: 16px 0 12px;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.05;
  letter-spacing: -.04em;
  color: var(--gray-900);
}
.hero-copy p, .page-hero p { margin: 0 0 22px; color: var(--gray-500); font-size: clamp(16px, 2vw, 19px); }
.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 24px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--white);
  font-weight: 850;
  box-shadow: 0 16px 35px rgba(41,128,254,.28);
  transition: transform .2s ease, box-shadow .2s ease;
  cursor: pointer;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 20px 40px rgba(41,128,254,.32); }
.hero-tags, .inline-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.hero-tags span, .inline-tags span {
  border: 1px solid var(--gray-200);
  background: rgba(255,255,255,.88);
  color: var(--gray-500);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
}
.app-showcase, .hero-visual {
  position: relative;
  border-radius: 34px;
  padding: 18px;
  min-height: 350px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #ffffff, #eef6ff);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.app-showcase:before, .hero-visual:before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  background: rgba(41,128,254,.14);
  border-radius: 50%;
  filter: blur(12px);
}
.phone-art { position: relative; max-height: 410px; margin: auto; object-fit: contain; z-index: 2; }
.float-label {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(221,229,238,.9);
  background: rgba(255,255,255,.88);
  color: var(--gray-700);
  box-shadow: 0 12px 28px rgba(19,26,39,.08);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 800;
}
.float-label.one { top: 24px; left: 18px; }
.float-label.two { top: 76px; right: 18px; }
.float-label.three { bottom: 76px; left: 18px; }
.float-label.four { bottom: 24px; right: 18px; }
.section { padding: 38px 0; }
.section-head { margin: 0 auto 22px; max-width: 760px; text-align: center; }
.section-head h2 { margin: 0 0 10px; font-size: clamp(26px, 4vw, 42px); line-height: 1.15; color: var(--gray-900); letter-spacing: -.025em; }
.section-head p { margin: 0; color: var(--gray-500); }
.highlight-bar, .category-grid, .risk-grid, .faq-grid, .info-grid { display: grid; gap: 14px; }
.highlight-card, .category-card, .risk-card, .faq-item, .info-card, .step-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: 0 12px 30px rgba(20,56,105,.05);
}
.highlight-card .mark, .category-card .mark { color: var(--primary); font-weight: 900; font-size: 13px; letter-spacing: .08em; }
.highlight-card h3, .category-card h3, .risk-card h3, .info-card h3, .step-card h3 { margin: 8px 0 7px; color: var(--gray-900); font-size: 19px; line-height: 1.25; }
.highlight-card p, .category-card p, .risk-card p, .info-card p, .step-card p, .faq-item p { margin: 0; color: var(--gray-500); }
.text-link { display: inline-flex; margin-top: 12px; color: var(--primary); font-weight: 800; }
.launch-card, .big-feature-card {
  display: grid;
  gap: 22px;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 22px;
}
.launch-card.gradient-bg, .big-feature-card.gradient-bg { background: linear-gradient(135deg, #ffffff 0%, #f1f7ff 100%); }
.feature-copy h2 { margin: 0 0 12px; color: var(--gray-900); font-size: clamp(26px, 4vw, 44px); line-height: 1.12; }
.feature-copy p { color: var(--gray-500); margin: 0 0 14px; }
.check-list, .clean-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.check-list li, .clean-list li { position: relative; padding-left: 28px; color: var(--gray-700); }
.check-list li:before, .clean-list li:before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 5px var(--primary-soft);
}
.feature-visual {
  border-radius: 28px;
  min-height: 250px;
  display: grid;
  place-items: center;
  padding: 18px;
  background: linear-gradient(160deg, var(--primary-soft), #fff);
  border: 1px solid var(--gray-200);
}
.feature-visual img { max-height: 360px; object-fit: contain; }
.cold-wallet-feature .feature-visual { background: linear-gradient(160deg, #f5f8fc, #eaf3ff); }
.swap-feature .feature-visual { background: linear-gradient(160deg, #fff, #eef6ff); }
.dapp-feature .feature-visual { background: linear-gradient(160deg, #eef6ff, #fff); }
.process-steps { display: grid; gap: 14px; counter-reset: step; }
.step-card { position: relative; padding-top: 56px; }
.step-card:before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 16px;
  left: 18px;
  color: var(--primary);
  font-weight: 950;
  letter-spacing: -.05em;
}
.risk-card { border-left: 4px solid var(--primary); }
.risk-card .suggest { margin-top: 12px; padding: 10px 12px; border-radius: 14px; background: var(--primary-light); color: var(--gray-700); font-size: 14px; }
.app-category-center { padding: 4px; border-radius: 32px; background: linear-gradient(135deg, #f6faff, #fff); }
.page-hero { padding: 52px 0 28px; background: radial-gradient(circle at 20% 0%, rgba(41,128,254,.13), transparent 35%); }
.page-shell { display: grid; gap: 22px; align-items: start; }
.content-container {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
}
.content-container h2 { margin: 24px 0 10px; color: var(--gray-900); font-size: 26px; }
.content-container p { color: var(--gray-500); }
.safety-panel {
  border: 1px solid rgba(41,128,254,.18);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f4f8ff, #fff);
  padding: 18px;
  margin: 20px 0;
}
.safety-panel h3 { margin: 0 0 10px; color: var(--gray-900); }
.side-panel { display: grid; gap: 14px; }
.cta-section {
  margin: 24px auto 0;
  text-align: center;
  border: 1px solid var(--gray-200);
  border-radius: 32px;
  padding: 30px 20px;
  background: linear-gradient(135deg, #f7fbff, #ffffff 56%, #eaf3ff);
  box-shadow: var(--shadow);
}
.cta-section h2 { margin: 0 0 10px; color: var(--gray-900); font-size: clamp(26px, 4vw, 42px); }
.cta-section p { margin: 0 auto 20px; color: var(--gray-500); max-width: 680px; }
.faq-item h3 { margin: 0 0 8px; color: var(--gray-900); font-size: 18px; }
.site-footer { margin-top: 48px; padding: 38px 0 0; background: #f6f9fe; border-top: 1px solid var(--gray-200); }
.footer-grid { display: grid; gap: 22px; }
.footer-brand { color: var(--gray-900); font-size: 20px; font-weight: 900; margin-bottom: 8px; }
.footer-grid p { color: var(--gray-500); margin: 0; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: var(--gray-500); }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { margin-top: 26px; padding: 16px; text-align: center; color: var(--gray-500); border-top: 1px solid var(--gray-200); font-size: 13px; }
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.note-line { color: var(--gray-500); font-size: 14px; }
@media (min-width: 560px) {
  .highlight-bar, .category-grid, .info-grid { grid-template-columns: repeat(2, 1fr); }
  .risk-grid, .faq-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 860px) {
  .nav-toggle { display: none; }
  .site-nav { position: static; display: flex; flex-direction: row; align-items: center; border: 0; box-shadow: none; background: transparent; padding: 0; gap: 2px; }
  .site-nav a { font-size: 14px; padding: 8px 10px; }
  .launch-hero { padding: 76px 0 48px; }
  .launch-hero .container, .big-feature-card, .launch-card, .page-shell { grid-template-columns: minmax(0, 1fr) minmax(320px, .86fr); }
  .big-feature-card.reverse, .launch-card.reverse { grid-template-columns: minmax(320px, .86fr) minmax(0, 1fr); }
  .big-feature-card.reverse .feature-copy, .launch-card.reverse .feature-copy { order: 2; }
  .big-feature-card.reverse .feature-visual, .launch-card.reverse .feature-visual { order: 1; }
  .highlight-bar { grid-template-columns: repeat(3, 1fr); }
  .category-grid { grid-template-columns: repeat(4, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .risk-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr .8fr; }
  .content-container { padding: 34px; }
}
@media (min-width: 1100px) {
  .site-nav a { padding: 9px 12px; }
  .app-showcase { min-height: 520px; }
  .section { padding: 54px 0; }
  .page-hero { padding: 70px 0 36px; }
}