* {
  box-sizing: border-box;
}

:root {
  --primary: #2980FE;
  --primary-dark: #0F62D9;
  --primary-soft: #EAF3FF;
  --ink: #202B3C;
  --muted: #667085;
  --line: #E5EAF2;
  --soft: #F6F8FB;
  --bluegray: #F2F7FF;
  --white: #FFFFFF;
  --shadow: 0 18px 48px rgba(32, 43, 60, 0.08);
  --radius: 24px;
  --radius-lg: 32px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FBFF 42%, #FFFFFF 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, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  width: min(1180px, calc(100% - 24px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  border-radius: 14px;
  font-size: 20px;
}

.site-nav {
  position: absolute;
  top: 72px;
  left: 12px;
  right: 12px;
  display: none;
  flex-direction: column;
  padding: 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.site-nav.open {
  display: flex;
}

.site-nav a {
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 650;
}

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

.web3-hero {
  position: relative;
  padding: 54px 0 34px;
  overflow: hidden;
}

.web3-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(41, 128, 254, 0.16), transparent 34%),
    radial-gradient(circle at 84% 8%, rgba(41, 128, 254, 0.12), transparent 32%),
    linear-gradient(180deg, #FFFFFF 0%, #F4F8FF 100%);
  z-index: -2;
}

.web3-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: 120px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(41, 128, 254, 0.18);
  border-radius: 50%;
  z-index: -1;
}

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

.eyebrow,
.category-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid rgba(41, 128, 254, 0.18);
  font-weight: 750;
  font-size: 13px;
}

h1, h2, h3 {
  margin: 0 0 14px;
  line-height: 1.18;
}

h1 {
  font-size: clamp(34px, 8vw, 62px);
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(26px, 5vw, 42px);
  letter-spacing: -0.025em;
}

h3 {
  font-size: 20px;
}

.lead {
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 24px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 16px;
  background: var(--primary);
  color: var(--white);
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(41, 128, 254, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
  box-shadow: 0 16px 36px rgba(41, 128, 254, 0.28);
}

.security-tags,
.float-tags,
.pill-list,
.meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.security-tags span,
.float-tags span,
.pill-list span,
.meta-list span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.hero-visual {
  position: relative;
  min-height: 360px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(41,128,254,0.12), rgba(255,255,255,0.88)),
    radial-gradient(circle at 72% 16%, rgba(41,128,254,0.18), transparent 34%);
  border: 1px solid rgba(41,128,254,0.18);
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: min(76%, 420px);
  filter: drop-shadow(0 24px 42px rgba(32, 43, 60, 0.18));
}

.float-tags {
  position: absolute;
  inset: auto 18px 18px 18px;
  justify-content: center;
}

.section {
  padding: 58px 0;
}

.section-soft {
  background: var(--soft);
}

.section-head {
  margin-bottom: 28px;
  max-width: 760px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.ecosystem-nav,
.category-grid {
  display: grid;
  gap: 16px;
}

.ecosystem-card,
.info-card,
.risk-card,
.faq-item,
.step-card,
.side-card,
.feature-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(32, 43, 60, 0.05);
}

.ecosystem-card {
  padding: 22px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.ecosystem-card:hover {
  transform: translateY(-3px);
  border-color: rgba(41, 128, 254, 0.42);
}

.ecosystem-card .tag,
.feature-card .tag {
  display: inline-block;
  color: var(--primary);
  font-weight: 800;
  font-size: 13px;
  margin-bottom: 12px;
}

.ecosystem-card p,
.info-card p,
.feature-card p,
.step-card p,
.risk-card p,
.side-card p,
.faq-item p {
  color: var(--muted);
  margin: 0;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 800;
  margin-top: 16px;
}

.text-link::after {
  content: "→";
}

.split-section {
  display: grid;
  gap: 24px;
  align-items: center;
}

.visual-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.visual-card::before {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  right: -70px;
  top: -70px;
  border-radius: 50%;
  background: rgba(41, 128, 254, 0.12);
}

.visual-card img {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  max-height: 360px;
  object-fit: contain;
}

.copy-block {
  padding: 10px 0;
}

.copy-block p {
  color: var(--muted);
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: grid;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding: 12px 14px 12px 42px;
  border-radius: 16px;
  background: var(--bluegray);
  color: var(--ink);
  border: 1px solid rgba(41, 128, 254, 0.10);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 14px;
  top: 12px;
  color: var(--primary);
  font-weight: 900;
}

.web3-section .visual-card,
.digital-assets-section .visual-card {
  background: linear-gradient(145deg, #FFFFFF, #F2F7FF);
}

.hardware-wallet-section,
.privacy-section {
  background: linear-gradient(180deg, #F6F8FB 0%, #FFFFFF 100%);
}

.swap-section .visual-card {
  background: linear-gradient(145deg, #FFFFFF, #EEF5FF);
}

.privacy-grid,
.submit-grid,
.developer-grid,
.risk-grid,
.faq-grid,
.process-steps {
  display: grid;
  gap: 16px;
}

.info-card,
.risk-card,
.step-card,
.side-card,
.feature-card {
  padding: 22px;
}

.info-card.highlight {
  border-left: 4px solid var(--primary);
}

.submit-panel,
.developer-panel,
.cta-section,
.page-hero {
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, #FFFFFF 0%, #F2F7FF 100%);
  border: 1px solid rgba(41,128,254,0.16);
  box-shadow: var(--shadow);
}

.submit-panel,
.developer-panel {
  padding: 26px;
}

.code-box {
  margin-top: 18px;
  padding: 18px;
  border-radius: 18px;
  background: #F7FAFF;
  border: 1px solid var(--line);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color: #355070;
  overflow: auto;
  white-space: pre-wrap;
}

.process-steps {
  counter-reset: step;
}

.step-card {
  position: relative;
  padding-top: 28px;
}

.step-number {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: var(--white);
  font-weight: 900;
  margin-bottom: 14px;
}

.risk-card {
  border-top: 4px solid var(--primary);
}

.risk-card strong {
  display: block;
  margin-top: 8px;
}

.faq-item {
  padding: 20px;
}

.cta-section {
  text-align: center;
  padding: 36px 22px;
}

.cta-section p {
  color: var(--muted);
  max-width: 650px;
  margin: 0 auto 22px;
}

.page-hero {
  margin: 34px auto 24px;
  padding: 34px 22px;
}

.page-hero p {
  max-width: 760px;
  color: var(--muted);
  margin: 0;
}

.page-layout {
  display: grid;
  gap: 22px;
  align-items: start;
}

.article-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 12px 32px rgba(32, 43, 60, 0.05);
}

.article-card p {
  color: var(--muted);
}

.article-card h2 {
  margin-top: 24px;
}

.notice-box {
  border-radius: var(--radius);
  padding: 20px;
  background: var(--bluegray);
  border: 1px solid rgba(41,128,254,0.14);
  margin: 22px 0;
}

.notice-box strong {
  display: block;
  color: var(--primary);
  margin-bottom: 8px;
}

.sidebar {
  display: grid;
  gap: 16px;
}

.side-card a {
  display: block;
  color: var(--primary);
  font-weight: 800;
  margin-top: 10px;
}

.download-inline {
  margin-top: 24px;
}

.download-section-single {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.install-steps {
  display: grid;
  gap: 14px;
  margin: 24px 0;
}

.install-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  align-items: start;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
}

.install-step span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--white);
  background: var(--primary);
  font-weight: 900;
}

.site-footer {
  margin-top: 48px;
  background: #F4F7FB;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-grid {
  display: grid;
  gap: 24px;
  padding: 38px 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  margin-bottom: 12px;
}

.footer-brand img {
  width: 34px;
  height: 34px;
}

.site-footer h3 {
  font-size: 16px;
  color: var(--ink);
}

.site-footer a {
  display: block;
  color: var(--muted);
  margin: 8px 0;
}

.site-footer a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

@media (min-width: 640px) {
  .ecosystem-nav,
  .category-grid,
  .privacy-grid,
  .submit-grid,
  .risk-grid,
  .faq-grid,
  .process-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-hero,
  .article-card {
    padding: 34px;
  }
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex !important;
    flex-direction: row;
    align-items: center;
    gap: 2px;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  .site-nav a {
    font-size: 14px;
    padding: 9px 10px;
  }

  .web3-hero {
    padding: 84px 0 56px;
  }

  .hero-grid,
  .split-section,
  .developer-grid,
  .submit-grid,
  .page-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .ecosystem-nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .ecosystem-card:nth-child(1),
  .ecosystem-card:nth-child(7) {
    grid-column: span 2;
  }

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

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

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

@media (min-width: 1120px) {
  .site-nav a {
    padding: 9px 13px;
  }

  .section {
    padding: 76px 0;
  }
}