* {
  box-sizing: border-box;
}
:root {
  --primary: #2980FE;
  --white: #ffffff;
  --soft: #f7faff;
  --pale: #eef5ff;
  --line: #e5eaf2;
  --text: #1e2a3a;
  --muted: #647386;
  --deep: #172033;
  --shadow: 0 18px 45px rgba(28, 72, 130, 0.10);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
}
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%, #f8fbff 48%, #ffffff 100%);
  line-height: 1.7;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  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, 0.92);
  border-bottom: 1px solid rgba(229, 234, 242, 0.9);
  backdrop-filter: blur(18px);
}
.header-inner {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--deep);
  letter-spacing: -0.02em;
}
.logo,
.footer-brand img {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  object-fit: contain;
}
.nav-toggle {
  display: none;
}
.nav-toggle-label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--white);
}
.nav-toggle-label span {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--deep);
}
.site-nav {
  position: absolute;
  top: 68px;
  left: 16px;
  right: 16px;
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.site-nav a {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 650;
  font-size: 15px;
}
.site-nav a:hover {
  color: var(--primary);
  background: var(--pale);
}
.nav-toggle:checked ~ .site-nav {
  display: flex;
}
.section {
  padding: 66px 0;
}
.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}
.section-heading.center {
  margin-inline: auto;
  text-align: center;
}
.eyebrow,
.category-badge,
.feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: #eef5ff;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}
h1,
h2,
h3 {
  color: var(--deep);
  line-height: 1.16;
  margin: 0 0 14px;
}
h1 {
  font-size: clamp(34px, 8vw, 72px);
  letter-spacing: -0.055em;
}
h2 {
  font-size: clamp(28px, 5.4vw, 48px);
  letter-spacing: -0.04em;
}
h3 {
  font-size: 20px;
  letter-spacing: -0.02em;
}
p {
  margin: 0 0 16px;
  color: var(--muted);
}
.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--white);
  font-weight: 800;
  border: 1px solid var(--primary);
  box-shadow: 0 14px 30px rgba(41, 128, 254, 0.25);
  transition: transform .2s ease, box-shadow .2s ease;
}
.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(41, 128, 254, 0.30);
}
.text-link {
  display: inline-flex;
  color: var(--primary);
  font-weight: 800;
}
.launch-hero {
  position: relative;
  overflow: hidden;
  padding: 58px 0 36px;
}
.launch-hero::before {
  content: "";
  position: absolute;
  inset: -140px -80px auto auto;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(41,128,254,.22), rgba(41,128,254,0) 65%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}
.hero-copy {
  position: relative;
  z-index: 1;
}
.hero-copy p {
  font-size: 17px;
  max-width: 640px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 26px 0 20px;
}
.security-tags,
.floating-tags,
.check-list,
.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  list-style: none;
  margin: 0;
}
.security-tags li,
.floating-tags span,
.check-list li,
.inline-links a {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}
.hero-visual,
.app-showcase {
  position: relative;
}
.app-showcase {
  min-height: 430px;
  display: grid;
  place-items: center;
  border-radius: 38px;
  background: linear-gradient(145deg, #eef5ff, #ffffff 62%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.app-showcase::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(41,128,254,.12);
  bottom: -120px;
  left: -80px;
}
.app-showcase img {
  position: relative;
  z-index: 2;
  max-height: 410px;
  object-fit: contain;
  filter: drop-shadow(0 18px 26px rgba(24, 65, 120, .18));
}
.floating-tags span {
  position: absolute;
  z-index: 3;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 28px rgba(27, 60, 110, .12);
}
.float-one { top: 28px; left: 18px; }
.float-two { top: 88px; right: 16px; }
.float-three { bottom: 74px; left: 24px; }
.float-four { bottom: 26px; right: 20px; }
.highlight-bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.highlight-card,
.category-card,
.risk-card,
.faq-item,
.small-card,
.info-card,
.step-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 10px 30px rgba(28, 72, 130, 0.06);
}
.highlight-card {
  min-height: 176px;
}
.highlight-card .number,
.step-number {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
  margin-bottom: 14px;
}
.big-feature-card,
.launch-card {
  display: grid;
  gap: 28px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  padding: 26px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.big-feature-card.soft,
.gradient-background {
  background: linear-gradient(145deg, #f4f8ff 0%, #ffffff 58%, #eef5ff 100%);
}
.feature-media {
  border-radius: 28px;
  background: linear-gradient(160deg, #eef5ff, #ffffff);
  border: 1px solid var(--line);
  min-height: 260px;
  display: grid;
  place-items: center;
  padding: 18px;
}
.feature-media img {
  max-height: 330px;
  object-fit: contain;
}
.feature-content ul,
.content-card ul,
.download-steps,
.faq-list,
.clean-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.feature-content li,
.content-card li,
.download-steps li,
.clean-list li {
  margin: 8px 0;
}
.wallet-feature .feature-content,
.swap-feature .feature-content,
.dapp-feature .feature-content,
.cold-wallet-feature .feature-content {
  max-width: 560px;
}
.process-steps,
.risk-grid,
.app-category-center,
.category-grid,
.card-grid,
.faq-grid {
  display: grid;
  gap: 16px;
}
.process-steps {
  counter-reset: step;
}
.step-card {
  position: relative;
  overflow: hidden;
}
.step-card::after {
  content: "";
  position: absolute;
  inset: auto 18px 18px auto;
  width: 76px;
  height: 76px;
  background: rgba(41,128,254,.08);
  border-radius: 26px;
}
.risk-card {
  border-left: 4px solid var(--primary);
}
.risk-card strong {
  color: var(--deep);
}
.app-category-center .category-card {
  min-height: 190px;
}
.category-card:hover,
.highlight-card:hover,
.risk-card:hover {
  transform: translateY(-3px);
  transition: transform .2s ease;
}
.faq-item details {
  margin: 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 850;
  color: var(--deep);
}
.faq-item p {
  margin-top: 12px;
}
.cta-section {
  text-align: center;
  padding: 68px 0;
}
.cta-box {
  border: 1px solid var(--line);
  border-radius: 34px;
  padding: 34px 22px;
  background: linear-gradient(135deg, #eef5ff, #ffffff 58%, #f8fbff);
  box-shadow: var(--shadow);
}
.page-hero {
  padding: 58px 0 30px;
  background: radial-gradient(circle at top right, rgba(41,128,254,.14), rgba(255,255,255,0) 42%);
}
.page-hero .container {
  display: grid;
  gap: 22px;
}
.page-hero p {
  max-width: 780px;
  font-size: 17px;
}
.content-container {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
}
.content-layout {
  display: grid;
  gap: 20px;
}
.content-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 12px 34px rgba(28, 72, 130, 0.07);
}
.safety-panel,
.notice-panel {
  border-radius: var(--radius-lg);
  border: 1px solid #d8e7ff;
  background: linear-gradient(145deg, #eef5ff, #ffffff);
  padding: 22px;
}
.aside-panel {
  display: grid;
  gap: 14px;
  align-content: start;
}
.download-page-grid {
  display: grid;
  gap: 20px;
}
.download-main {
  display: grid;
  gap: 22px;
  justify-items: start;
}
.download-steps {
  list-style: none;
  padding: 0;
}
.download-steps li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
}
.download-steps span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
}
.site-footer {
  margin-top: 38px;
  background: #f6f9fe;
  border-top: 1px solid var(--line);
  padding-top: 38px;
}
.footer-grid {
  display: grid;
  gap: 26px;
}
.site-footer h3 {
  font-size: 16px;
  margin-bottom: 10px;
}
.site-footer a {
  display: block;
  color: var(--muted);
  margin: 8px 0;
}
.site-footer a:hover {
  color: var(--primary);
}
.footer-bottom {
  margin-top: 28px;
  padding: 18px;
  text-align: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
@media (min-width: 620px) {
  .highlight-bar,
  .category-grid,
  .risk-grid,
  .faq-grid,
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .app-category-center,
  .process-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 900px) {
  .site-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
  }
  .site-nav a {
    font-size: 14px;
    padding: 9px 10px;
  }
  .nav-toggle-label {
    display: none;
  }
  .hero-grid {
    grid-template-columns: 1.02fr .98fr;
  }
  .launch-hero {
    padding: 92px 0 60px;
  }
  .highlight-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .big-feature-card,
  .download-page-grid,
  .content-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  }
  .big-feature-card.reverse .feature-media,
  .cold-wallet-feature .feature-media {
    order: -1;
  }
  .process-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .risk-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .app-category-center {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: 1.3fr .7fr .7fr;
  }
  .content-card {
    padding: 32px;
  }
}
@media (min-width: 1120px) {
  .site-nav a {
    padding-inline: 12px;
  }
  .big-feature-card {
    padding: 38px;
  }
  .section {
    padding: 82px 0;
  }
}
@media (max-width: 420px) {
  .container,
  .content-container {
    width: min(100% - 24px, 1120px);
  }
  .app-showcase {
    min-height: 360px;
    border-radius: 30px;
  }
  .floating-tags span {
    font-size: 12px;
    padding: 7px 9px;
  }
  .feature-media {
    min-height: 220px;
  }
  .download-btn {
    width: 100%;
  }
}