:root {
  --primary: #2980FE;
  --primary-dark: #1368e6;
  --primary-soft: #eef6ff;
  --bg: #ffffff;
  --bg-soft: #f7f9fc;
  --bg-blue: #f2f7ff;
  --text: #202936;
  --muted: #697386;
  --line: #e4e9f2;
  --card: #ffffff;
  --radius: 24px;
  --shadow: 0 18px 50px rgba(31, 61, 116, 0.08);
}

* { box-sizing: border-box; }
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 45%, #ffffff 100%);
  line-height: 1.72;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 14px; color: var(--muted); }
h1, h2, h3 { margin: 0 0 14px; line-height: 1.2; color: var(--text); }
h1 { font-size: clamp(2.2rem, 8vw, 4.8rem); letter-spacing: -0.06em; }
h2 { font-size: clamp(1.7rem, 4vw, 3rem); letter-spacing: -0.04em; }
h3 { font-size: 1.18rem; }
ul, ol { margin: 0; padding-left: 20px; color: var(--muted); }
main { min-height: 60vh; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(228,233,242,0.9);
}
.nav-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand, .footer-brand { display: flex; align-items: center; gap: 12px; }
.brand-logo, .footer-logo { width: 40px; height: 40px; object-fit: contain; border-radius: 12px; }
.brand-text { font-weight: 800; color: var(--text); letter-spacing: -0.02em; white-space: nowrap; }
.desktop-nav { display: none; align-items: center; gap: 6px; }
.desktop-nav a, .mobile-nav a {
  color: #344054;
  font-size: 0.94rem;
  padding: 10px 12px;
  border-radius: 999px;
}
.desktop-nav a:hover, .desktop-nav a.active, .mobile-nav a:hover { background: var(--primary-soft); color: var(--primary); }
.nav-toggle {
  display: inline-grid;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  place-content: center;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--text); display: block; border-radius: 99px; }
.mobile-nav {
  display: none;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 14px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
}
.mobile-nav.open { display: grid; }

.container, .content-container, .page-container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}
.section { padding: 60px 0; }
.section-header { margin-bottom: 26px; max-width: 760px; }
.section-kicker, .category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid #d8eaff;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 800;
  margin-bottom: 14px;
}
.text-link { color: var(--primary); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: '→'; }
.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 12px 28px rgba(41,128,254,0.22);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  border: none;
  cursor: pointer;
}
.download-btn:hover { transform: translateY(-2px); background: var(--primary-dark); box-shadow: 0 16px 34px rgba(41,128,254,0.28); }

.web3-dashboard-hero {
  position: relative;
  overflow: hidden;
  padding: 56px 0 28px;
  background:
    radial-gradient(circle at 18% 16%, rgba(41,128,254,0.15), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(41,128,254,0.09), transparent 32%);
}
.web3-dashboard-hero::after {
  content: '';
  position: absolute;
  inset: auto -120px -160px auto;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  background: rgba(41,128,254,0.08);
  pointer-events: none;
}
.hero-grid { display: grid; gap: 30px; align-items: center; }
.hero-copy { position: relative; z-index: 1; }
.hero-copy p { font-size: 1.05rem; max-width: 650px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin: 24px 0 18px; }
.security-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.security-tags span, .mini-tag {
  background: #fff;
  border: 1px solid var(--line);
  color: #435066;
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.86rem;
  font-weight: 700;
}
.hero-panel {
  position: relative;
  min-height: 460px;
  border: 1px solid rgba(216,234,255,0.95);
  background: linear-gradient(145deg, rgba(255,255,255,0.95), rgba(240,247,255,0.86));
  border-radius: 30px;
  box-shadow: var(--shadow);
  padding: 18px;
  overflow: hidden;
}
.product-frame {
  position: relative;
  z-index: 2;
  width: min(320px, 78%);
  margin: 28px auto 0;
  background: #fff;
  border-radius: 30px;
  padding: 14px;
  box-shadow: 0 30px 60px rgba(31,61,116,0.12);
}
.product-frame img { border-radius: 24px; object-fit: contain; margin: auto; max-height: 360px; }
.status-card {
  position: absolute;
  z-index: 3;
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px 14px;
  min-width: 150px;
  box-shadow: 0 14px 40px rgba(31,61,116,0.1);
}
.status-card strong { display: block; color: var(--text); font-size: 0.92rem; }
.status-card span { color: var(--muted); font-size: 0.78rem; }
.status-card::before {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 99px;
  background: var(--primary);
  display: inline-block;
  margin-right: 6px;
}
.status-card.one { top: 20px; left: 16px; }
.status-card.two { top: 88px; right: 16px; }
.status-card.three { bottom: 112px; left: 16px; }
.status-card.four { bottom: 46px; right: 16px; }
.status-card.five { bottom: 26px; left: 38%; min-width: 170px; }

.service-index { padding: 48px 0; }
.category-grid, .service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.service-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 12px 30px rgba(31,61,116,0.06);
}
.service-card .label {
  display: inline-flex;
  color: var(--primary);
  font-weight: 900;
  font-size: 0.8rem;
  padding: 5px 10px;
  background: var(--primary-soft);
  border-radius: 999px;
  margin-bottom: 14px;
}

.feature-block {
  border-radius: 30px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 22px;
  display: grid;
  gap: 26px;
  align-items: center;
}
.feature-block.alt, .hardware-wallet-section .feature-block { background: linear-gradient(145deg, #ffffff, var(--bg-blue)); }
.feature-copy .check-list { display: grid; gap: 10px; margin: 18px 0; padding: 0; list-style: none; }
.check-list li {
  position: relative;
  padding-left: 30px;
  color: #435066;
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 6px;
  background: var(--primary-soft);
  border: 1px solid #cfe4ff;
}
.image-card {
  background: linear-gradient(180deg, var(--bg-soft), #fff);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 18px;
  min-height: 280px;
  display: grid;
  place-items: center;
}
.image-card img { max-height: 360px; object-fit: contain; }

.privacy-boundary-section, .submit-chain-section, .developer-center-section { padding: 60px 0; }
.safety-panel, .privacy-panel, .submit-panel, .developer-panel, .cta-section {
  background: linear-gradient(145deg, #ffffff, var(--bg-blue));
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 26px;
  box-shadow: var(--shadow);
}
.boundary-tags, .doc-links { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.boundary-tags span, .doc-links a, .code-pill {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  color: #435066;
  font-weight: 800;
  font-size: 0.9rem;
}
.submit-list, .developer-list { display: grid; gap: 14px; margin-top: 20px; }
.submit-list div, .developer-list div, .code-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}
.code-card {
  font-family: "SFMono-Regular", Consolas, monospace;
  color: #334155;
  background: #f8fbff;
  overflow: hidden;
}
.code-card span { color: var(--primary); }

.process-steps { display: grid; gap: 14px; counter-reset: step; }
.step-card {
  counter-increment: step;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  position: relative;
}
.step-number {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: inline-grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
  margin-bottom: 12px;
}
.risk-grid { display: grid; gap: 16px; }
.risk-card {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--primary);
  border-radius: 20px;
  padding: 20px;
}
.risk-card small { display: block; color: var(--primary); font-weight: 900; margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
}
.faq-item h3 { margin-bottom: 8px; }
.cta-section { text-align: center; margin: 54px auto; }
.cta-section p { max-width: 640px; margin: 0 auto 22px; }

.page-hero {
  padding: 58px 0 34px;
  background: radial-gradient(circle at 10% 20%, rgba(41,128,254,0.12), transparent 28%), linear-gradient(180deg, #fff, #f7fbff);
}
.page-hero .summary { font-size: 1.05rem; max-width: 760px; }
.article-layout { display: grid; gap: 24px; align-items: start; padding: 40px 0 70px; }
.article-main {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 24px;
  box-shadow: 0 12px 34px rgba(31,61,116,0.05);
}
.article-main p { margin-bottom: 18px; }
.side-panel {
  background: var(--bg-blue);
  border: 1px solid #dcecff;
  border-radius: 24px;
  padding: 22px;
}
.info-grid { display: grid; gap: 14px; margin: 22px 0; }
.info-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}
.notice-box {
  background: #f8fbff;
  border: 1px solid #dcecff;
  border-radius: 20px;
  padding: 18px;
  margin: 20px 0;
}
.page-actions { margin-top: 24px; }
.download-steps { display: grid; gap: 14px; margin: 26px 0; }
.download-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}
.download-step span {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 16px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 900;
}
.about-grid { display: grid; gap: 16px; }

.site-footer {
  background: #f7f9fc;
  border-top: 1px solid var(--line);
  padding: 34px 0 18px;
}
.footer-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  gap: 22px;
}
.footer-brand p { margin: 4px 0 0; font-size: 0.92rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-links a {
  color: #435066;
  background: #fff;
  border: 1px solid var(--line);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
}
.footer-bottom {
  width: min(1180px, calc(100% - 32px));
  margin: 26px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

@media (min-width: 640px) {
  .category-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .risk-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .nav-toggle, .mobile-nav { display: none !important; }
  .desktop-nav { display: flex; }
  .web3-dashboard-hero { padding: 82px 0 46px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(420px, 0.82fr); gap: 48px; }
  .feature-block { grid-template-columns: 1.05fr 0.95fr; padding: 34px; }
  .feature-block.reverse .feature-copy { order: 2; }
  .feature-block.reverse .image-card { order: 1; }
  .category-grid { grid-template-columns: repeat(4, 1fr); }
  .category-grid .service-card:nth-child(1), .category-grid .service-card:nth-child(7) { grid-column: span 2; }
  .service-grid { grid-template-columns: repeat(3, 1fr); }
  .risk-grid { grid-template-columns: repeat(4, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .article-layout { grid-template-columns: minmax(0, 1fr) 330px; }
  .article-main { padding: 34px; }
  .footer-shell { grid-template-columns: 1.1fr 1fr; align-items: center; }
  .footer-bottom { flex-direction: row; justify-content: space-between; }
}

@media (min-width: 1120px) {
  .risk-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 460px) {
  .status-card { position: static; min-width: 0; margin-top: 10px; }
  .hero-panel { min-height: auto; }
  .product-frame { width: 84%; margin-top: 10px; }
  .download-btn { width: 100%; }
  .hero-actions { align-items: stretch; }
  .mobile-nav { grid-template-columns: 1fr; }
}