:root {
  --primary: #2980FE;
  --primary-dark: #1168e3;
  --ink: #1f2937;
  --muted: #667085;
  --soft: #f5f7fb;
  --softer: #eef6ff;
  --line: #e5eaf2;
  --white: #ffffff;
  --radius-lg: 30px;
  --radius-md: 22px;
  --shadow: 0 18px 50px rgba(41, 128, 254, .12);
}
* { 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(--ink);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 42%, #ffffff 100%);
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.nav-wrap {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 18px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .02em; color: #111827; }
.logo { width: 38px; height: 38px; object-fit: contain; border-radius: 12px; }
.site-nav { display: none; width: 100%; padding: 0 0 18px; }
.site-nav.open { display: grid; gap: 8px; }
.site-nav a { padding: 10px 12px; border-radius: 999px; color: #4b5563; font-size: 14px; }
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--softer); }
.nav-toggle { border: 0; background: var(--softer); width: 42px; height: 42px; border-radius: 14px; display: grid; place-content: center; gap: 4px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--primary); border-radius: 999px; }
.container, .content-container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.section { padding: 62px 0; }
.section-title { margin: 0 0 12px; font-size: clamp(28px, 5vw, 44px); line-height: 1.15; letter-spacing: -0.03em; }
.section-lead { color: var(--muted); max-width: 760px; margin: 0 0 28px; }
.eyebrow, .category-badge { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); background: var(--softer); border: 1px solid #d9eaff; padding: 7px 12px; border-radius: 999px; font-size: 13px; font-weight: 700; margin-bottom: 16px; }
.download-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; background: var(--primary); color: #fff; font-weight: 800; box-shadow: 0 12px 30px rgba(41,128,254,.28); transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.download-btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 16px 38px rgba(41,128,254,.32); }
.link-more { color: var(--primary); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; }
.link-more::after { content: '›'; font-size: 20px; line-height: 1; }
.web3-dashboard-hero { padding: 54px 0 34px; position: relative; overflow: hidden; }
.web3-dashboard-hero::before { content: ''; position: absolute; inset: -130px -80px auto auto; width: 380px; height: 380px; border-radius: 50%; background: radial-gradient(circle, rgba(41,128,254,.22), rgba(41,128,254,0) 68%); pointer-events: none; }
.hero-grid { display: grid; gap: 34px; align-items: center; }
.hero-copy h1 { margin: 0 0 18px; font-size: clamp(38px, 9vw, 72px); line-height: 1.02; letter-spacing: -0.055em; }
.hero-copy p { color: var(--muted); font-size: 17px; max-width: 670px; margin: 0 0 24px; }
.security-tags, .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.security-tags span, .hero-tags span, .mini-tag { padding: 8px 12px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: #445066; font-size: 13px; box-shadow: 0 10px 26px rgba(15,23,42,.04); }
.hero-console { position: relative; padding: 18px; border: 1px solid var(--line); background: linear-gradient(145deg, #ffffff 0%, #eef6ff 100%); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.hero-console::after { content: ''; position: absolute; inset: auto -50px -80px auto; width: 220px; height: 220px; background: rgba(41,128,254,.12); border-radius: 50%; }
.product-stage { position: relative; z-index: 2; display: grid; gap: 14px; }
.product-frame { background: #fff; border: 1px solid var(--line); border-radius: 28px; padding: 16px; display: grid; place-items: center; min-height: 260px; }
.product-frame img { max-height: 360px; object-fit: contain; filter: drop-shadow(0 18px 35px rgba(41,128,254,.16)); }
.status-grid { display: grid; gap: 12px; }
.status-card { background: rgba(255,255,255,.86); border: 1px solid var(--line); border-radius: 18px; padding: 14px; box-shadow: 0 12px 28px rgba(15,23,42,.05); }
.status-card strong { display: block; color: #111827; line-height: 1.25; }
.status-card span { color: var(--muted); font-size: 13px; }
.service-index { padding: 34px 0 46px; }
.service-grid, .category-grid, .risk-grid, .faq-grid { display: grid; gap: 16px; }
.service-card, .category-card, .risk-card, .faq-item, .feature-card, .safety-panel, .info-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 22px; box-shadow: 0 14px 34px rgba(15,23,42,.05); }
.service-card .tag, .risk-card .tag { display: inline-flex; color: var(--primary); background: var(--softer); border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 800; margin-bottom: 12px; }
.service-card h3, .category-card h3, .risk-card h3, .feature-card h3, .faq-item h3 { margin: 0 0 8px; font-size: 20px; }
.service-card p, .category-card p, .risk-card p, .feature-card p, .faq-item p, .info-card p { color: var(--muted); margin: 0; }
.split-feature, .digital-assets-hub, .web3-ecosystem-section, .hardware-wallet-section, .swap-service-section, .developer-center-section { display: grid; gap: 26px; align-items: center; }
.feature-visual { background: linear-gradient(145deg, #f6faff, #ffffff); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; min-height: 280px; display: grid; place-items: center; box-shadow: var(--shadow); }
.feature-visual img { max-height: 380px; object-fit: contain; }
.feature-copy { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; }
.feature-copy h2 { margin: 0 0 14px; font-size: clamp(26px, 4.8vw, 42px); line-height: 1.18; }
.feature-copy p { color: var(--muted); margin: 0 0 16px; }
.check-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 28px; color: #344054; }
.check-list li::before { content: ''; position: absolute; left: 0; top: 10px; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px rgba(41,128,254,.12); }
.alt-bg { background: linear-gradient(180deg, #f7fbff, #ffffff); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.privacy-boundary-section, .submit-chain-section { display: grid; gap: 20px; }
.boundary-panel { background: linear-gradient(135deg, #ffffff, #eef6ff); border: 1px solid #dcecff; border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow); }
.boundary-grid { display: grid; gap: 14px; margin-top: 18px; }
.boundary-item { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 18px; }
.submit-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow); }
.dev-panel { background: #111827; color: #dbeafe; border-radius: var(--radius-lg); padding: 24px; overflow: hidden; box-shadow: 0 20px 50px rgba(17,24,39,.16); }
.dev-panel .window-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.dev-panel .window-bar span { width: 10px; height: 10px; border-radius: 50%; background: #475569; }
.code-lines { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; line-height: 1.8; color: #bfdbfe; white-space: pre-wrap; }
.process-steps { display: grid; gap: 14px; counter-reset: step; }
.step-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 20px 20px 20px 72px; box-shadow: 0 12px 28px rgba(15,23,42,.05); }
.step-card::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; left: 18px; top: 20px; width: 38px; height: 38px; border-radius: 14px; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 900; }
.step-card h3 { margin: 0 0 6px; }
.step-card p { margin: 0; color: var(--muted); }
.risk-card { border-left: 4px solid var(--primary); }
.cta-section { text-align: center; padding: 70px 0; background: linear-gradient(135deg, #eef6ff, #ffffff); border-top: 1px solid var(--line); }
.cta-box { width: min(860px, calc(100% - 32px)); margin: 0 auto; background: rgba(255,255,255,.86); border: 1px solid #dcecff; border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow); }
.cta-box h2 { margin: 0 0 12px; font-size: clamp(28px, 5vw, 44px); }
.cta-box p { margin: 0 auto 22px; color: var(--muted); max-width: 640px; }
.page-hero { padding: 58px 0 34px; background: linear-gradient(180deg, #f4f9ff, #ffffff); border-bottom: 1px solid var(--line); }
.page-hero h1 { margin: 0 0 14px; font-size: clamp(34px, 7vw, 58px); line-height: 1.08; letter-spacing: -0.045em; }
.page-hero p { color: var(--muted); font-size: 17px; max-width: 780px; margin: 0; }
.page-layout { display: grid; gap: 24px; padding: 50px 0 72px; }
.article-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; box-shadow: 0 16px 36px rgba(15,23,42,.05); }
.article-card h2 { margin-top: 0; font-size: 28px; }
.article-card p { color: var(--muted); }
.sidebar { display: grid; gap: 16px; align-content: start; }
.notice-list { margin: 0; padding-left: 20px; color: var(--muted); }
.notice-list li { margin: 8px 0; }
.download-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow); }
.download-panel h2 { margin-top: 0; }
.download-panel ol { padding-left: 22px; color: var(--muted); }
.download-panel li { margin: 10px 0; }
.site-footer { background: #f6f8fb; border-top: 1px solid var(--line); padding: 46px 0 22px; }
.footer-grid { width: min(1180px, calc(100% - 32px)); margin: 0 auto; display: grid; gap: 28px; }
.footer-grid p { color: var(--muted); max-width: 420px; }
.footer-grid h3 { margin: 0 0 12px; font-size: 16px; }
.footer-grid a:not(.brand) { display: block; color: #5d6677; margin: 8px 0; }
.footer-grid a:hover { color: var(--primary); }
.footer-bottom { width: min(1180px, calc(100% - 32px)); margin: 28px auto 0; padding-top: 18px; border-top: 1px solid var(--line); color: #7b8495; font-size: 13px; }
.footer-brand { margin-bottom: 12px; }
@media (min-width: 680px) {
  .status-grid, .service-grid, .category-grid, .risk-grid, .faq-grid, .boundary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 980px) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; align-items: center; justify-content: flex-end; gap: 2px; width: auto; padding: 0; }
  .site-nav a { font-size: 13px; padding: 9px 10px; }
  .hero-grid { grid-template-columns: .95fr 1.05fr; }
  .status-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-grid { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .service-card { min-height: 176px; }
  .digital-assets-hub, .web3-ecosystem-section, .hardware-wallet-section, .swap-service-section, .developer-center-section { grid-template-columns: 1fr 1fr; }
  .reverse .feature-visual { order: 2; }
  .reverse .feature-copy { order: 1; }
  .privacy-boundary-section, .submit-chain-section { grid-template-columns: 1.05fr .95fr; align-items: stretch; }
  .category-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .risk-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-layout { grid-template-columns: minmax(0, 1fr) 340px; }
  .footer-grid { grid-template-columns: 1.4fr .8fr .8fr .8fr; }
}
@media (min-width: 1180px) {
  .site-nav a { font-size: 14px; padding: 10px 12px; }
}