* {
  box-sizing: border-box;
}

:root {
  --primary: #2980FE;
  --primary-soft: #EAF3FF;
  --primary-tint: #F5F9FF;
  --bg: #FFFFFF;
  --bg-soft: #F6F8FB;
  --bg-blue: #F2F7FF;
  --text: #1F2937;
  --muted: #667085;
  --line: #E5EAF1;
  --line-blue: #CFE2FF;
  --card: #FFFFFF;
  --shadow: 0 18px 50px rgba(23, 41, 77, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #ffffff 0%, #f7faff 46%, #ffffff 100%);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

main {
  min-height: 70vh;
}

.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);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(229, 234, 241, 0.9);
}

.nav-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
  white-space: nowrap;
}

.logo,
.brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: 12px;
}

.site-nav {
  position: absolute;
  left: 14px;
  right: 14px;
  top: 76px;
  padding: 14px;
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.site-nav.is-open {
  display: grid;
}

.site-nav a {
  color: #344054;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--bg-soft);
}

.site-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.nav-toggle {
  border: 1px solid var(--line-blue);
  background: #fff;
  color: var(--primary);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 700;
}

.eyebrow,
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.launch-hero {
  position: relative;
  padding: 54px 0 34px;
  overflow: hidden;
}

.launch-hero::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  top: -200px;
  right: -220px;
  background: radial-gradient(circle, rgba(41, 128, 254, 0.18), rgba(41, 128, 254, 0));
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.hero-copy h1,
.page-hero h1 {
  margin: 16px 0 16px;
  color: #111827;
  font-size: clamp(34px, 9vw, 66px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.hero-copy p,
.page-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 16px 36px rgba(41, 128, 254, 0.28);
  border: 1px solid rgba(41, 128, 254, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 42px rgba(41, 128, 254, 0.32);
  background: #1f73ee;
}

.hero-tags,
.inline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags span,
.inline-tags span {
  display: inline-flex;
  padding: 8px 12px;
  border: 1px solid var(--line-blue);
  border-radius: 999px;
  color: #37506c;
  background: rgba(255, 255, 255, 0.84);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  padding: 28px;
  border-radius: 34px;
  background:
    linear-gradient(150deg, rgba(41, 128, 254, 0.16), rgba(255, 255, 255, 0.86)),
    radial-gradient(circle at top right, rgba(41, 128, 254, 0.2), transparent 40%);
  border: 1px solid var(--line-blue);
  box-shadow: var(--shadow);
}

.app-showcase {
  width: min(320px, 78vw);
  margin: 0 auto;
  filter: drop-shadow(0 26px 45px rgba(23, 41, 77, 0.16));
  border-radius: 30px;
}

.float-label {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 190px;
  padding: 10px 12px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  color: #344054;
  font-weight: 800;
  font-size: 13px;
  box-shadow: 0 12px 32px rgba(23, 41, 77, 0.1);
}

.float-label::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--primary);
}

.float-one { left: 14px; top: 42px; }
.float-two { right: 16px; top: 96px; }
.float-three { left: 22px; bottom: 88px; }
.float-four { right: 20px; bottom: 36px; }

.section {
  padding: 42px 0;
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.section-head.center {
  text-align: center;
  justify-items: center;
}

.section-title {
  margin: 0;
  color: #111827;
  font-size: clamp(26px, 6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.section-desc {
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}

.highlight-bar {
  display: grid;
  gap: 14px;
}

.highlight-card,
.category-card,
.risk-card,
.info-card,
.faq-item,
.step-card,
.check-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 35px rgba(23, 41, 77, 0.05);
}

.highlight-card {
  padding: 18px;
  display: grid;
  gap: 8px;
}

.highlight-card .tag,
.card-kicker {
  width: fit-content;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 12px;
  font-weight: 800;
}

.highlight-card h3,
.category-card h3,
.risk-card h3,
.info-card h3,
.step-card h3,
.check-card h3 {
  margin: 0;
  font-size: 18px;
  color: #111827;
}

.highlight-card p,
.category-card p,
.risk-card p,
.info-card p,
.step-card p,
.check-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  width: fit-content;
  color: var(--primary);
  font-weight: 800;
}

.text-link::after {
  content: "›";
  font-size: 20px;
  line-height: 1;
}

.launch-card,
.big-feature-card {
  border-radius: 32px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.big-feature-card {
  display: grid;
  gap: 24px;
  padding: 24px;
}

.wallet-feature {
  background:
    linear-gradient(135deg, #ffffff 0%, #f6faff 100%);
}

.cold-wallet-feature {
  background:
    linear-gradient(135deg, #f7faff 0%, #ffffff 100%);
}

.swap-feature {
  background:
    linear-gradient(135deg, #ffffff 0%, #f3f7ff 100%);
}

.dapp-feature {
  background:
    linear-gradient(135deg, #f5f9ff 0%, #ffffff 100%);
}

.feature-copy {
  display: grid;
  gap: 14px;
  align-content: center;
}

.feature-copy h2 {
  margin: 0;
  font-size: clamp(25px, 6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.feature-copy p {
  margin: 0;
  color: var(--muted);
}

.feature-list,
.clean-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 4px 0;
  list-style: none;
}

.feature-list li,
.clean-list li {
  position: relative;
  padding-left: 24px;
  color: #475467;
}

.feature-list li::before,
.clean-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 0 5px rgba(41, 128, 254, 0.11);
}

.feature-media {
  min-height: 260px;
  display: grid;
  place-items: center;
  padding: 18px;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(207, 226, 255, 0.9);
}

.feature-media img {
  max-height: 420px;
  object-fit: contain;
  filter: drop-shadow(0 22px 38px rgba(23, 41, 77, 0.12));
}

.process-steps {
  display: grid;
  gap: 14px;
  counter-reset: step;
}

.step-card {
  position: relative;
  padding: 20px;
  display: grid;
  gap: 8px;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 24px rgba(41, 128, 254, 0.22);
}

.risk-grid {
  display: grid;
  gap: 14px;
}

.risk-card {
  padding: 18px;
  border-left: 4px solid var(--primary);
  display: grid;
  gap: 8px;
}

.risk-label {
  width: fit-content;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 12px;
  font-weight: 800;
}

.app-category-center,
.category-grid {
  display: grid;
  gap: 14px;
}

.category-card {
  padding: 20px;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-blue);
}

.safety-panel {
  padding: 24px;
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(41, 128, 254, 0.10), rgba(255, 255, 255, 0.9)),
    var(--bg-blue);
  border: 1px solid var(--line-blue);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 18px;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.cta-section {
  margin: 34px 0 56px;
  padding: 34px 22px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 20% 20%, rgba(41, 128, 254, 0.15), transparent 36%),
    linear-gradient(135deg, #f4f8ff, #ffffff);
  border: 1px solid var(--line-blue);
  text-align: center;
  box-shadow: var(--shadow);
}

.cta-section h2 {
  margin: 0 0 10px;
  font-size: clamp(25px, 7vw, 42px);
  letter-spacing: -0.035em;
}

.cta-section p {
  margin: 0 auto 22px;
  color: var(--muted);
  max-width: 720px;
}

.page-hero {
  padding: 52px 0 28px;
  background:
    radial-gradient(circle at top right, rgba(41, 128, 254, 0.14), transparent 42%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.page-hero .container {
  display: grid;
  gap: 14px;
}

.content-layout {
  display: grid;
  gap: 18px;
  padding: 30px 0 54px;
}

.article-card {
  padding: 22px;
  border-radius: 28px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 35px rgba(23, 41, 77, 0.05);
}

.article-card h2 {
  margin: 0 0 12px;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.article-card p {
  color: var(--muted);
  margin: 0 0 14px;
}

.info-grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.info-card,
.check-card {
  padding: 18px;
}

.side-panel {
  display: grid;
  gap: 14px;
  align-content: start;
}

.side-panel .download-wrap {
  padding: 20px;
  border-radius: 28px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 35px rgba(23, 41, 77, 0.05);
}

.download-wrap p {
  margin: 0 0 15px;
  color: var(--muted);
}

.download-page-grid {
  display: grid;
  gap: 20px;
}

.download-panel {
  padding: 26px;
  border-radius: 32px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.numbered-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
  counter-reset: listitem;
}

.numbered-list li {
  counter-increment: listitem;
  position: relative;
  padding: 14px 14px 14px 58px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--primary-tint);
}

.numbered-list li::before {
  content: counter(listitem);
  position: absolute;
  left: 14px;
  top: 14px;
  width: 30px;
  height: 30px;
  border-radius: 11px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.site-footer {
  background: #101828;
  color: #D0D5DD;
  padding: 44px 0 20px;
}

.footer-grid {
  display: grid;
  gap: 26px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  margin-bottom: 10px;
}

.footer-brand img {
  width: 36px;
  height: 36px;
  border-radius: 12px;
}

.site-footer h2 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 16px;
}

.site-footer a {
  display: block;
  color: #D0D5DD;
  margin: 8px 0;
  font-size: 14px;
}

.site-footer a:hover {
  color: #fff;
}

.footer-bottom {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
  color: #98A2B3;
}

@media (min-width: 640px) {
  .highlight-bar,
  .risk-grid,
  .app-category-center,
  .category-grid,
  .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .download-page-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

@media (min-width: 900px) {
  .container {
    width: min(1120px, calc(100% - 56px));
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  .site-nav a {
    background: transparent;
    padding: 8px 9px;
  }

  .launch-hero {
    padding: 76px 0 48px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.92fr);
  }

  .hero-copy p {
    max-width: 640px;
  }

  .highlight-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .big-feature-card {
    grid-template-columns: 1fr 0.9fr;
    padding: 34px;
    min-height: 470px;
  }

  .big-feature-card.reverse .feature-copy {
    order: 2;
  }

  .big-feature-card.reverse .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,
  .category-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .content-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
  }

  .article-card {
    padding: 30px;
  }

  .footer-grid {
    grid-template-columns: 1.3fr repeat(3, 1fr);
  }
}

@media (min-width: 1100px) {
  .site-nav a {
    padding: 8px 12px;
  }

  .hero-visual {
    min-height: 520px;
  }

  .app-showcase {
    width: 360px;
  }
}

@media (max-width: 420px) {
  .container,
  .nav-shell {
    width: min(100% - 22px, 1120px);
  }

  .hero-visual {
    padding: 16px;
    min-height: 320px;
  }

  .float-label {
    font-size: 12px;
    padding: 8px 10px;
  }

  .float-one { left: 8px; top: 24px; }
  .float-two { right: 8px; top: 76px; }
  .float-three { left: 10px; bottom: 78px; }
  .float-four { right: 10px; bottom: 22px; }

  .download-btn {
    width: 100%;
  }

  .hero-actions .download-btn {
    width: auto;
    min-width: 150px;
  }
}