* {
  box-sizing: border-box;
}

:root {
  --primary: #2980FE;
  --primary-soft: #EAF3FF;
  --primary-soft-2: #F4F8FF;
  --white: #ffffff;
  --gray-50: #F7F9FC;
  --gray-100: #EEF2F7;
  --gray-200: #DDE5EF;
  --gray-500: #697586;
  --gray-700: #344054;
  --gray-900: #101828;
  --shadow: 0 20px 60px rgba(16, 24, 40, .08);
  --radius: 24px;
}

html {
  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(--gray-900);
  background: var(--white);
  line-height: 1.75;
  overflow-x: hidden;
}

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

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

p {
  color: var(--gray-500);
  margin: 0 0 18px;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
  color: var(--gray-900);
  line-height: 1.16;
  letter-spacing: -.03em;
}

h1 {
  font-size: clamp(2.35rem, 8vw, 5.4rem);
}

h2 {
  font-size: clamp(1.65rem, 5vw, 3rem);
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  width: min(860px, calc(100% - 32px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--gray-100);
}

.header-inner {
  width: min(1180px, calc(100% - 28px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--gray-900);
}

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

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  background: var(--white);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0 11px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--gray-900);
  border-radius: 10px;
}

.site-nav {
  position: absolute;
  left: 14px;
  right: 14px;
  top: 78px;
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--gray-100);
  border-radius: 22px;
  background: var(--white);
  box-shadow: var(--shadow);
}

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

.site-nav a {
  padding: 11px 12px;
  border-radius: 14px;
  color: var(--gray-700);
  font-size: .95rem;
}

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

.gradient-bg {
  background:
    radial-gradient(circle at 78% 18%, rgba(41, 128, 254, .18), transparent 34%),
    linear-gradient(180deg, #fff 0%, #f7fbff 52%, #ffffff 100%);
}

.launch-hero {
  padding: 54px 0 42px;
}

.hero-grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.eyebrow,
.category-badge {
  display: inline-flex;
  align-items: center;
  width: max-content;
  gap: 8px;
  padding: 7px 12px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
  font-size: .82rem;
  letter-spacing: .04em;
}

.lead {
  font-size: 1.08rem;
  color: var(--gray-700);
  max-width: 640px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--white);
  font-weight: 800;
  box-shadow: 0 14px 30px rgba(41, 128, 254, .24);
  transition: transform .2s ease, box-shadow .2s ease;
  border: 0;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(41, 128, 254, .28);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-tags span,
.mini-grid span {
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  background: rgba(255, 255, 255, .82);
  color: var(--gray-700);
  font-size: .9rem;
}

.app-showcase,
.hero-visual {
  position: relative;
  min-height: 380px;
  display: grid;
  place-items: center;
  border-radius: 32px;
  background: linear-gradient(145deg, #ffffff, #eef6ff);
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.app-showcase::before {
  content: "";
  position: absolute;
  width: 310px;
  height: 310px;
  border-radius: 50%;
  background: rgba(41, 128, 254, .12);
  filter: blur(4px);
}

.app-showcase img {
  position: relative;
  z-index: 1;
  max-height: 430px;
  object-fit: contain;
}

.float-label {
  position: absolute;
  z-index: 2;
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(221, 229, 239, .86);
  color: var(--gray-700);
  font-weight: 800;
  box-shadow: 0 10px 28px rgba(16, 24, 40, .08);
  font-size: .86rem;
}

.label-wallet { left: 20px; top: 48px; }
.label-cold { right: 18px; top: 92px; }
.label-swap { left: 18px; bottom: 92px; }
.label-dapp { right: 20px; bottom: 48px; }

.section {
  padding: 56px 0;
}

.soft-bg {
  background: var(--gray-50);
}

.section-heading {
  margin-bottom: 26px;
  max-width: 760px;
}

.highlight-bar {
  display: grid;
  gap: 12px;
}

.highlight-bar a,
.app-category-center a,
.process-steps a,
.risk-grid article {
  border: 1px solid var(--gray-100);
  background: var(--white);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(16, 24, 40, .04);
}

.highlight-bar a {
  display: grid;
  gap: 6px;
  position: relative;
}

.highlight-bar a::before,
.app-category-center a::before {
  content: "";
  width: 34px;
  height: 4px;
  border-radius: 99px;
  background: var(--primary);
  display: block;
  margin-bottom: 4px;
}

.highlight-bar strong,
.app-category-center strong,
.process-steps strong,
.risk-grid strong {
  color: var(--gray-900);
  font-size: 1.05rem;
}

.highlight-bar span,
.app-category-center span,
.process-steps span {
  color: var(--gray-500);
  font-size: .94rem;
}

.feature-section .container {
  display: grid;
  gap: 24px;
}

.big-feature-card {
  display: grid;
  gap: 24px;
  align-items: center;
  padding: 24px;
  border-radius: 30px;
  border: 1px solid var(--gray-100);
  background: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.big-feature-card.reverse {
  background: linear-gradient(145deg, #f7fbff, #ffffff);
}

.feature-image {
  border-radius: 24px;
  background: var(--primary-soft-2);
  min-height: 260px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.feature-image img {
  max-height: 360px;
  object-fit: contain;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 22px;
  display: grid;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding-left: 26px;
  color: var(--gray-700);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 5px var(--primary-soft);
}

.text-link {
  color: var(--primary);
  font-weight: 800;
}

.mini-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.safety-panel,
.side-panel,
.content-card,
.related-box {
  border: 1px solid var(--gray-100);
  border-radius: 24px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(16, 24, 40, .04);
}

.safety-panel {
  padding: 18px;
  margin: 18px 0;
  border-left: 4px solid var(--primary);
}

.page-hero {
  padding: 54px 0 48px;
  text-align: center;
}

.page-hero .download-btn {
  margin-top: 8px;
}

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

.content-card {
  padding: 24px;
}

.content-card h2 {
  font-size: clamp(1.35rem, 4vw, 2.1rem);
  margin-top: 8px;
}

.side-panel {
  padding: 22px;
  position: sticky;
  top: 92px;
}

.side-panel h2 {
  font-size: 1.3rem;
}

.related-box {
  display: grid;
  gap: 9px;
  padding: 16px;
  background: var(--gray-50);
}

.related-box a {
  color: var(--primary);
  font-weight: 800;
}

.step-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  gap: 14px;
}

.step-list li {
  display: grid;
  gap: 4px;
  padding: 18px;
  border-radius: 20px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
}

.step-list strong {
  color: var(--gray-900);
}

.step-list span {
  color: var(--gray-500);
}

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

.process-steps a {
  display: grid;
  gap: 8px;
  border-left: 4px solid var(--primary);
}

.process-steps b {
  color: var(--primary);
  font-size: 1.1rem;
}

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

.risk-grid article {
  display: grid;
  gap: 8px;
  border-top: 4px solid var(--primary);
}

.risk-grid p {
  margin: 0;
}

.risk-grid em {
  color: var(--gray-700);
  font-style: normal;
  font-size: .92rem;
}

.risk-grid a {
  color: var(--primary);
  font-weight: 800;
  font-size: .92rem;
}

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

.app-category-center a {
  min-height: 154px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.faq-item {
  border: 1px solid var(--gray-100);
  border-radius: 20px;
  background: var(--white);
  padding: 0;
  box-shadow: 0 10px 30px rgba(16, 24, 40, .04);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 800;
  color: var(--gray-900);
}

.faq-item p {
  padding: 0 20px 20px;
}

.cta-section {
  text-align: center;
  padding: 64px 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(41, 128, 254, .16), transparent 38%),
    linear-gradient(180deg, #ffffff, #f4f8ff);
}

.cta-section p {
  max-width: 620px;
  margin: 0 auto 22px;
}

.site-footer {
  background: #f8fafc;
  border-top: 1px solid var(--gray-100);
  padding: 40px 0 0;
}

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

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.site-footer h2 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.site-footer a {
  display: block;
  color: var(--gray-500);
  margin: 8px 0;
}

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

.footer-bottom {
  margin-top: 28px;
  padding: 18px;
  text-align: center;
  color: var(--gray-500);
  border-top: 1px solid var(--gray-100);
  font-size: .9rem;
}

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

  .content-card,
  .side-panel {
    padding: 30px;
  }
}

@media (min-width: 880px) {
  .nav-toggle {
    display: none;
  }

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

  .site-nav a {
    font-size: .92rem;
    padding: 8px 10px;
  }

  .launch-hero {
    padding: 76px 0 64px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, .82fr);
    gap: 48px;
  }

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

  .big-feature-card {
    grid-template-columns: 1.05fr .95fr;
    padding: 38px;
    min-height: 480px;
  }

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

  .content-layout {
    grid-template-columns: minmax(0, 1fr) 330px;
  }

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

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

  .app-category-center {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.2fr .7fr .7fr;
  }
}

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

  .app-showcase {
    min-height: 520px;
  }

  .section {
    padding: 74px 0;
  }
}