/* Mobile first responsive Web3 platform styling */
:root {
  --primary: #2980FE;
  --primary-soft: #EAF3FF;
  --primary-faint: #F4F9FF;
  --white: #FFFFFF;
  --ink: #1F2937;
  --text: #374151;
  --muted: #6B7280;
  --line: #E5E7EB;
  --soft: #F8FAFC;
  --panel: #F3F6FA;
  --shadow: 0 18px 45px rgba(41, 128, 254, .10);
  --shadow-card: 0 12px 28px rgba(31, 41, 55, .07);
  --radius: 24px;
}

* {
  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%, #F7FBFF 38%, #FFFFFF 100%);
  line-height: 1.75;
  overflow-x: hidden;
}

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

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

.container {
  width: min(100% - 32px, 1180px);
  margin: 0 auto;
}

.narrow-container {
  width: min(100% - 32px, 920px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(229, 231, 235, .86);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(100% - 28px, 1180px);
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.logo,
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: .02em;
}

.logo img,
.footer-logo img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  object-fit: contain;
}

.nav-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mobile-nav-trigger {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: inline-grid;
  place-items: center;
  background: var(--white);
  cursor: pointer;
}

.mobile-nav-trigger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 999px;
  margin: 2px 0;
}

.site-nav {
  position: absolute;
  left: 14px;
  right: 14px;
  top: 72px;
  display: none;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow-card);
}

.nav-toggle:checked ~ .site-nav {
  display: grid;
}

.site-nav a {
  padding: 10px 12px;
  border-radius: 14px;
  color: var(--text);
  font-size: 15px;
}

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

.section {
  padding: 56px 0;
}

.section-head {
  margin-bottom: 24px;
}

.eyebrow,
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid rgba(41, 128, 254, .16);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3 {
  color: var(--ink);
  line-height: 1.25;
  margin: 0;
}

h1 {
  font-size: clamp(34px, 8vw, 64px);
  letter-spacing: -.04em;
}

h2 {
  font-size: clamp(26px, 5vw, 42px);
  letter-spacing: -.03em;
}

h3 {
  font-size: 20px;
  letter-spacing: -.02em;
}

p {
  margin: 12px 0 0;
}

.lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 760px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(41, 128, 254, .28);
  border: 1px solid rgba(41, 128, 254, .1);
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px rgba(41, 128, 254, .34);
}

.link-arrow {
  display: inline-flex;
  margin-top: 14px;
  color: var(--primary);
  font-weight: 800;
}

.link-arrow::after {
  content: "→";
  margin-left: 6px;
}

/* web3 dashboard hero */
.web3-dashboard-hero {
  position: relative;
  padding: 54px 0 46px;
  overflow: hidden;
}

.web3-dashboard-hero::before {
  content: "";
  position: absolute;
  inset: -120px -50px auto auto;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(41,128,254,.20), rgba(41,128,254,0) 66%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 30px;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-copy h1 {
  margin-top: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 26px;
}

.safety-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.safety-tags span {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  box-shadow: 0 8px 18px rgba(31,41,55,.04);
}

.hero-console {
  position: relative;
  border-radius: 30px;
  padding: 16px;
  background: linear-gradient(145deg, rgba(255,255,255,.92), rgba(244,249,255,.95));
  border: 1px solid rgba(41, 128, 254, .16);
  box-shadow: var(--shadow);
}

.product-frame {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 18px;
  min-height: 320px;
  display: grid;
  place-items: center;
}

.product-frame img {
  max-height: 360px;
  object-fit: contain;
}

.status-panel {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.status-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 10px 20px rgba(31,41,55,.04);
}

.status-card strong {
  color: var(--ink);
}

.status-card span {
  color: var(--primary);
  font-weight: 800;
  font-size: 13px;
}

.service-index,
.category-grid,
.risk-grid,
.faq-summary,
.info-grid,
.check-grid {
  display: grid;
  gap: 16px;
}

.service-card,
.info-card,
.risk-card,
.faq-item,
.step-card,
.check-card,
.related-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.service-card {
  position: relative;
  min-height: 178px;
}

.service-card::before,
.risk-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 5px;
  height: 42px;
  border-radius: 24px 0 12px 0;
  background: var(--primary);
}

.service-card p,
.risk-card p,
.faq-item p,
.step-card p,
.check-card p,
.info-card p {
  color: var(--muted);
}

.service-card .tag {
  display: inline-flex;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 12px;
}

.feature-section,
.digital-assets-hub,
.web3-ecosystem-section,
.hardware-wallet-section,
.swap-service-section,
.privacy-boundary-section,
.submit-chain-section,
.developer-center-section {
  border-radius: 32px;
  padding: 26px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow-card);
}

.digital-assets-hub {
  background: linear-gradient(135deg, #FFFFFF 0%, #F4F9FF 100%);
}

.web3-ecosystem-section {
  background: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 100%);
}

.hardware-wallet-section {
  background: linear-gradient(135deg, #F3F6FA 0%, #FFFFFF 100%);
}

.swap-service-section {
  background: linear-gradient(135deg, #FFFFFF 0%, #EEF6FF 100%);
}

.privacy-boundary-section {
  background: #fff;
}

.submit-chain-section {
  background: linear-gradient(135deg, #F4F9FF 0%, #FFFFFF 100%);
}

.developer-center-section {
  background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
}

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

.feature-media {
  border-radius: 28px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 18px;
  display: grid;
  place-items: center;
  min-height: 260px;
}

.feature-media img {
  max-height: 330px;
  object-fit: contain;
}

.bullet-list,
.clean-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 10px;
}

.bullet-list li,
.clean-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text);
}

.bullet-list li::before,
.clean-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 0 5px rgba(41,128,254,.12);
}

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

.boundary-item {
  padding: 16px;
  border-radius: 18px;
  background: var(--primary-faint);
  border: 1px solid rgba(41,128,254,.12);
}

.tech-panel {
  background: #1F2937;
  color: #D1D5DB;
  border-radius: 24px;
  padding: 20px;
  overflow: hidden;
  box-shadow: 0 22px 40px rgba(31,41,55,.16);
}

.tech-line {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.tech-line b {
  color: #93C5FD;
  font-weight: 700;
}

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

.step-card {
  position: relative;
  padding-left: 72px;
}

.step-card::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 22px;
  width: 36px;
  height: 36px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
}

.risk-card {
  position: relative;
}

.risk-card .risk-action {
  display: block;
  margin-top: 10px;
  color: var(--ink);
  font-weight: 800;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--ink);
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.cta-section {
  margin: 30px auto 70px;
  border-radius: 34px;
  padding: 38px 22px;
  text-align: center;
  background: linear-gradient(135deg, #F4F9FF 0%, #FFFFFF 100%);
  border: 1px solid rgba(41,128,254,.16);
  box-shadow: var(--shadow);
}

.cta-section p {
  max-width: 680px;
  margin: 12px auto 24px;
  color: var(--muted);
}

/* content pages */
.page-hero {
  padding: 54px 0 26px;
}

.page-hero h1 {
  margin-top: 16px;
  max-width: 860px;
}

.page-hero .lead {
  margin-top: 16px;
}

.page-layout {
  display: grid;
  gap: 22px;
  padding: 26px 0 64px;
}

.content-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.content-panel + .content-panel {
  margin-top: 18px;
}

.content-panel h2 {
  font-size: clamp(24px, 4vw, 34px);
}

.sidebar {
  display: grid;
  gap: 16px;
  align-content: start;
}

.side-card {
  padding: 18px;
  background: var(--primary-faint);
  border: 1px solid rgba(41,128,254,.14);
  border-radius: 24px;
}

.side-card h3 {
  font-size: 18px;
}

.download-panel {
  margin-top: 18px;
  padding: 20px;
  border-radius: 24px;
  background: linear-gradient(135deg, #F4F9FF 0%, #FFFFFF 100%);
  border: 1px solid rgba(41,128,254,.14);
}

.download-panel p {
  margin-bottom: 18px;
  color: var(--muted);
}

.notice {
  border-left: 4px solid var(--primary);
  padding: 16px;
  border-radius: 18px;
  background: var(--primary-faint);
  color: var(--text);
}

.steps-list {
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  counter-reset: ordered;
}

.steps-list li {
  counter-increment: ordered;
  padding: 16px 16px 16px 58px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--line);
  position: relative;
}

.steps-list li::before {
  content: counter(ordered);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 30px;
  height: 30px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--primary);
  font-weight: 900;
}

.table-like {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.table-row {
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.table-row strong {
  color: var(--ink);
}

.site-footer {
  background: #F8FAFC;
  border-top: 1px solid var(--line);
  padding-top: 46px;
}

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

.site-footer p,
.site-footer a,
.footer-bottom {
  color: var(--muted);
  font-size: 14px;
}

.site-footer h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.site-footer a {
  display: block;
  margin: 8px 0;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--line);
  margin-top: 34px;
  padding: 18px;
}

@media (min-width: 640px) {
  .service-index,
  .category-grid,
  .check-grid,
  .faq-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .risk-grid,
  .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .status-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .table-row {
    grid-template-columns: 160px 1fr;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .mobile-nav-trigger {
    display: none;
  }

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

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

  .web3-dashboard-hero {
    padding: 86px 0 70px;
  }

  .hero-grid,
  .split-grid {
    grid-template-columns: 1.02fr .98fr;
  }

  .hero-console {
    padding: 22px;
  }

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

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

  .digital-assets-hub,
  .web3-ecosystem-section,
  .hardware-wallet-section,
  .swap-service-section,
  .privacy-boundary-section,
  .submit-chain-section,
  .developer-center-section,
  .feature-section {
    padding: 38px;
  }

  .reverse .feature-media {
    order: -1;
  }

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

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

  .faq-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .content-panel {
    padding: 34px;
  }

  .footer-grid {
    grid-template-columns: 1.3fr .7fr .7fr;
  }
}

@media (min-width: 1120px) {
  .site-nav a {
    padding: 9px 12px;
  }
}