:root {
  --primary: #2980FE;
  --primary-dark: #1268e8;
  --primary-soft: #eaf3ff;
  --bg: #f6f9fd;
  --panel: #ffffff;
  --panel-soft: #f9fbff;
  --text: #253041;
  --muted: #647083;
  --line: #e3eaf3;
  --line-strong: #d5e2f1;
  --shadow: 0 18px 48px rgba(39, 74, 120, .10);
  --shadow-soft: 0 10px 28px rgba(39, 74, 120, .08);
  --radius: 24px;
  --radius-sm: 18px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 0%, rgba(41, 128, 254, .10), transparent 24rem),
    linear-gradient(180deg, #ffffff 0%, #f6f9fd 42%, #ffffff 100%);
  line-height: 1.72;
  overflow-x: hidden;
}

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

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

p {
  margin: 0 0 16px;
  color: var(--muted);
}

h1, h2, h3 {
  margin: 0;
  line-height: 1.18;
  color: var(--text);
}

h1 {
  font-size: clamp(34px, 9vw, 68px);
  letter-spacing: -1.8px;
}

h2 {
  font-size: clamp(28px, 6vw, 44px);
  letter-spacing: -1px;
}

h3 {
  font-size: 20px;
}

ul, ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

li + li {
  margin-top: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(227, 234, 243, .86);
}

.nav-shell {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.2px;
}

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

.brand-text {
  white-space: nowrap;
}

.nav-toggle-input {
  display: none;
}

.nav-toggle {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: grid;
  place-content: center;
  gap: 5px;
  background: var(--panel);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 8px;
  background: var(--text);
}

.main-nav {
  position: absolute;
  top: 72px;
  left: 16px;
  right: 16px;
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow-soft);
}

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

.main-nav a {
  padding: 12px 14px;
  border-radius: 14px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  background: #fff;
}

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

.site-main {
  min-height: 70vh;
}

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

.section {
  padding: 62px 0;
}

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

.section-kicker,
.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: 8px 13px;
  font-size: 13px;
  font-weight: 750;
  margin-bottom: 14px;
}

.section-head p {
  margin-top: 14px;
  font-size: 17px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 24px;
  border-radius: 999px;
  color: #fff;
  background: var(--primary);
  box-shadow: 0 14px 26px rgba(41, 128, 254, .25);
  font-weight: 800;
  line-height: 1;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
  box-shadow: 0 18px 32px rgba(41, 128, 254, .30);
}

.app-hero {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 56px 0 28px;
  display: grid;
  gap: 32px;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-copy p {
  font-size: 18px;
  max-width: 650px;
  margin-top: 18px;
}

.hero-actions {
  margin: 26px 0 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

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

.hero-tags span,
.mini-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .82);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 650;
}

.app-visual {
  position: relative;
  padding: 18px;
  border-radius: 32px;
  background:
    linear-gradient(145deg, rgba(41, 128, 254, .12), rgba(255, 255, 255, .82)),
    #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.app-visual::before {
  content: "";
  position: absolute;
  inset: 10% -20% auto auto;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  background: rgba(41, 128, 254, .12);
  filter: blur(10px);
}

.app-visual img {
  position: relative;
  width: min(84%, 420px);
  margin: 0 auto;
  border-radius: 28px;
  filter: drop-shadow(0 24px 34px rgba(55, 79, 110, .18));
}

.floating-card {
  position: relative;
  margin-top: 12px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  box-shadow: var(--shadow-soft);
}

.floating-card strong {
  display: block;
  color: var(--text);
  margin-bottom: 4px;
}

.floating-card span {
  color: var(--muted);
  font-size: 13px;
}

.ability-bar {
  width: min(100% - 32px, var(--container));
  margin: 22px auto 24px;
  display: grid;
  gap: 12px;
}

.ability-item {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 8px 22px rgba(55, 79, 110, .05);
}

.ability-item::before {
  content: "";
  width: 34px;
  height: 4px;
  display: block;
  background: var(--primary);
  border-radius: 999px;
  margin-bottom: 12px;
}

.ability-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.ability-item p {
  margin: 0;
  font-size: 14px;
}

.feature-showcase {
  display: grid;
  gap: 16px;
}

.feature-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.feature-card img {
  margin: 18px 0 0;
  border-radius: 20px;
  background: var(--panel-soft);
}

.feature-card p {
  margin-top: 10px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 6px;
  color: var(--primary);
  font-weight: 800;
}

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

.product-section,
.wallet-panel,
.cold-wallet-panel,
.swap-panel,
.dapp-panel {
  display: grid;
  gap: 26px;
  align-items: center;
}

.panel-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.panel-card.blue-tint,
.cold-wallet-panel .panel-card {
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.panel-media {
  position: relative;
  padding: 20px;
  border-radius: 30px;
  background: linear-gradient(145deg, #edf5ff, #ffffff);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.panel-media img {
  margin: 0 auto;
  border-radius: 24px;
}

.check-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.check-list span {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--muted);
}

.check-list span::before {
  content: "";
  flex: 0 0 9px;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--primary);
  margin-top: 8px;
}

.info-stack {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.info-box,
.notice-box {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  padding: 16px;
}

.info-box strong,
.notice-box strong {
  display: block;
  color: var(--text);
  margin-bottom: 6px;
}

.notice-box {
  border-left: 4px solid var(--primary);
}

.gradient-band {
  background:
    radial-gradient(circle at top right, rgba(41, 128, 254, .13), transparent 24rem),
    linear-gradient(180deg, #f4f8ff 0%, #ffffff 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.step-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 10px 24px rgba(55, 79, 110, .05);
}

.step-card .step-no {
  width: 42px;
  height: 42px;
  display: grid;
  place-content: center;
  background: var(--primary);
  color: #fff;
  border-radius: 14px;
  font-weight: 850;
  margin-bottom: 14px;
}

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

.risk-card,
.category-card,
.eco-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 8px 22px rgba(55, 79, 110, .05);
}

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

.risk-card em {
  display: block;
  color: var(--primary);
  font-style: normal;
  font-weight: 800;
  margin-top: 8px;
}

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

.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px 20px;
}

.faq-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.cta-section {
  width: min(100% - 32px, var(--container));
  margin: 36px auto 78px;
  padding: 38px 24px;
  text-align: center;
  border-radius: 30px;
  background:
    radial-gradient(circle at 15% 0%, rgba(41, 128, 254, .16), transparent 20rem),
    linear-gradient(135deg, #eef6ff, #ffffff 70%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.cta-section p {
  max-width: 720px;
  margin: 14px auto 24px;
}

.page-hero {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 52px 0 28px;
}

.page-hero-inner {
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at top right, rgba(41, 128, 254, .13), transparent 22rem),
    var(--panel);
  box-shadow: var(--shadow-soft);
  padding: 26px;
}

.page-hero p {
  max-width: 780px;
  margin-top: 16px;
  font-size: 17px;
}

.content-layout {
  width: min(100% - 32px, var(--container));
  margin: 0 auto 78px;
  display: grid;
  gap: 20px;
}

.article-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.article-panel h2 {
  font-size: 28px;
  margin-bottom: 14px;
}

.article-panel h3 {
  margin: 22px 0 10px;
}

.side-panel {
  align-self: start;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 20px;
  box-shadow: var(--shadow-soft);
}

.side-panel h3 {
  margin-bottom: 12px;
}

.side-links {
  display: grid;
  gap: 8px;
}

.side-links a {
  padding: 11px 12px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--muted);
  font-weight: 700;
}

.side-links a:hover {
  color: var(--primary);
  border-color: rgba(41, 128, 254, .28);
}

.tip-grid,
.guide-grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.tip-card,
.guide-card {
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
}

.tip-card strong,
.guide-card strong {
  display: block;
  color: var(--text);
  margin-bottom: 6px;
}

.page-download {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.download-steps {
  display: grid;
  gap: 12px;
  margin: 22px 0;
}

.download-step {
  display: flex;
  gap: 14px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.download-step span {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  display: grid;
  place-content: center;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 850;
}

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

.footer-shell {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 34px 0;
  display: grid;
  gap: 22px;
}

.footer-brand {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.footer-brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 14px;
}

.footer-brand p {
  margin: 6px 0 0;
  max-width: 620px;
  font-size: 14px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.footer-links a {
  color: var(--muted);
  font-weight: 650;
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid var(--line);
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 18px 0 28px;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

@media (min-width: 560px) {
  .ability-bar,
  .category-grid,
  .ecosystem-grid,
  .risk-grid,
  .tip-grid,
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 860px) {
  .nav-toggle {
    display: none;
  }

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

  .main-nav a {
    background: transparent;
    padding: 10px 11px;
  }

  .app-hero {
    grid-template-columns: 1.02fr .98fr;
    padding-top: 78px;
  }

  .hero-copy p {
    font-size: 19px;
  }

  .app-visual {
    min-height: 560px;
    display: grid;
    place-content: center;
  }

  .floating-card {
    position: absolute;
    margin: 0;
    width: 188px;
  }

  .floating-card.card-assets {
    left: 20px;
    top: 46px;
  }

  .floating-card.card-cold {
    right: 18px;
    top: 106px;
  }

  .floating-card.card-swap {
    left: 34px;
    bottom: 70px;
  }

  .floating-card.card-dapp {
    right: 26px;
    bottom: 34px;
  }

  .ability-bar {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .wallet-panel,
  .cold-wallet-panel,
  .swap-panel,
  .dapp-panel,
  .product-section {
    grid-template-columns: 1fr 1fr;
  }

  .cold-wallet-panel .panel-media {
    order: -1;
  }

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

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

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

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

  .article-panel {
    padding: 34px;
  }

  .page-hero-inner {
    padding: 38px;
  }

  .footer-shell {
    grid-template-columns: 1fr 420px;
    align-items: start;
  }

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

@media (min-width: 1120px) {
  .section {
    padding: 78px 0;
  }

  .feature-card.large {
    min-height: 430px;
  }

  .feature-card img {
    max-height: 260px;
    object-fit: contain;
  }
}