:root {
  --primary: #2980FE;
  --primary-soft: #EAF3FF;
  --bg: #F6F9FC;
  --panel: #FFFFFF;
  --muted: #6B7280;
  --text: #1F2937;
  --deep: #111827;
  --line: #E5EAF1;
  --soft-line: #EEF3F8;
  --radius-lg: 28px;
  --radius-md: 20px;
  --shadow: 0 18px 50px rgba(41, 128, 254, .10);
  --shadow-card: 0 12px 32px rgba(31, 41, 55, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 36%, #F6F9FC 100%);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 16% 0%, rgba(41,128,254,.12), transparent 28rem),
    radial-gradient(circle at 94% 12%, rgba(41,128,254,.08), transparent 22rem);
  z-index: -1;
}
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,.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--soft-line);
}
.nav-wrap {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); letter-spacing: -.02em; }
.logo { width: 38px; height: 38px; border-radius: 13px; box-shadow: 0 8px 20px rgba(41,128,254,.18); }
.site-nav { display: none; flex-direction: column; position: absolute; left: 16px; right: 16px; top: 72px; padding: 14px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow-card); }
.site-nav.open { display: flex; }
.site-nav a { padding: 10px 12px; color: #4B5563; border-radius: 12px; font-size: 15px; }
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-toggle { width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 18px; height: 2px; background: var(--deep); border-radius: 2px; }

.container, .content-container { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.section { padding: 64px 0; }
.section-title { max-width: 760px; margin: 0 auto 28px; text-align: center; }
.kicker, .badge { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); background: var(--primary-soft); border: 1px solid rgba(41,128,254,.14); border-radius: 999px; padding: 7px 12px; font-size: 13px; font-weight: 700; }
h1, h2, h3 { color: var(--deep); line-height: 1.2; margin: 0; letter-spacing: -.03em; }
h1 { font-size: clamp(34px, 8vw, 64px); }
h2 { font-size: clamp(28px, 5vw, 44px); }
h3 { font-size: 21px; }
p { margin: 0; color: var(--muted); }
.lead { font-size: 17px; color: #4B5563; }
.muted { color: var(--muted); }

.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 28px rgba(41,128,254,.24);
  border: 1px solid rgba(255,255,255,.2);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(41,128,254,.30); background: #1F72EE; }
.link { color: var(--primary); font-weight: 750; display: inline-flex; align-items: center; gap: 6px; }
.link::after { content: "›"; font-size: 18px; }

.app-hero { padding: 62px 0 34px; }
.hero-grid { display: grid; grid-template-columns: 1fr; gap: 34px; align-items: center; }
.hero-copy { display: grid; gap: 20px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span { padding: 8px 12px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: #4B5563; font-size: 13px; box-shadow: 0 8px 22px rgba(31,41,55,.05); }
.app-visual { position: relative; min-height: 420px; display: grid; place-items: center; padding: 20px; border-radius: 34px; background: linear-gradient(145deg, rgba(41,128,254,.12), rgba(255,255,255,.92)); border: 1px solid rgba(41,128,254,.10); overflow: hidden; }
.app-visual::before { content: ""; position: absolute; width: 360px; height: 360px; border-radius: 50%; background: rgba(41,128,254,.12); filter: blur(10px); }
.app-visual img { position: relative; max-height: 430px; object-fit: contain; filter: drop-shadow(0 26px 42px rgba(41,128,254,.16)); }
.floating-card { position: relative; width: 100%; margin-top: 10px; background: rgba(255,255,255,.92); border: 1px solid var(--line); border-radius: 18px; padding: 12px 14px; box-shadow: var(--shadow-card); font-size: 13px; color: var(--muted); }
.floating-card strong { display: block; color: var(--deep); font-size: 14px; }
.float-stack { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; z-index: 2; width: 100%; }

.ability-bar { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 18px; background: rgba(255,255,255,.84); border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow-card); }
.ability-item { padding: 14px; border-radius: 18px; background: #fff; border: 1px solid var(--soft-line); }
.ability-item b { color: var(--primary); display: block; margin-bottom: 4px; }
.ability-item span { color: var(--muted); font-size: 14px; }

.feature-showcase { display: grid; grid-template-columns: 1fr; gap: 18px; }
.feature-card, .glass-card, .info-card, .risk-card, .faq-item, .category-card, .step-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.feature-card { padding: 20px; display: grid; gap: 16px; overflow: hidden; }
.feature-card img { width: 100%; min-height: 180px; object-fit: contain; border-radius: 18px; background: #F8FBFF; }
.feature-card p { margin-top: 8px; }

.product-section { padding: 74px 0; }
.product-panel { display: grid; grid-template-columns: 1fr; gap: 26px; align-items: center; padding: 22px; border-radius: 32px; border: 1px solid var(--line); background: rgba(255,255,255,.92); box-shadow: var(--shadow); overflow: hidden; }
.product-panel.alt, .cold-wallet-panel { background: linear-gradient(135deg, #F4F8FD, #FFFFFF); }
.product-panel.swap-panel { background: #fff; }
.product-panel.dapp-panel { background: linear-gradient(135deg, #FFFFFF 0%, #F2F7FF 100%); }
.panel-copy { display: grid; gap: 16px; }
.panel-copy ul, .check-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.panel-copy li, .check-list li { padding: 10px 12px; border-radius: 14px; background: #F8FBFF; border: 1px solid var(--soft-line); color: #4B5563; }
.panel-copy li::before, .check-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); display: inline-block; margin-right: 8px; }
.panel-image { padding: 16px; border-radius: 26px; background: linear-gradient(180deg, #F8FBFF, #FFFFFF); border: 1px solid var(--soft-line); }
.panel-image img { margin: 0 auto; max-height: 440px; object-fit: contain; }

.process-steps { display: grid; grid-template-columns: 1fr; gap: 14px; counter-reset: step; }
.step-card { padding: 18px; position: relative; overflow: hidden; }
.step-card .num { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; background: var(--primary); color: #fff; font-weight: 800; margin-bottom: 12px; }
.step-card p { margin: 8px 0 12px; }

.risk-grid, .ecosystem-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.risk-card { padding: 18px; border-top: 4px solid var(--primary); }
.risk-card p { margin: 8px 0 12px; }
.risk-card small { display: block; color: #4B5563; background: #F8FBFF; border: 1px solid var(--soft-line); padding: 10px; border-radius: 12px; }
.category-card { padding: 18px; min-height: 150px; display: grid; gap: 10px; align-content: start; }
.category-card h3 { font-size: 18px; }

.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 18px; }
.faq-item h3 { font-size: 18px; margin-bottom: 8px; }

.cta-section { margin: 64px auto; padding: 38px 22px; text-align: center; border-radius: 32px; background: linear-gradient(135deg, #EAF3FF, #FFFFFF); border: 1px solid rgba(41,128,254,.14); box-shadow: var(--shadow); display: grid; gap: 16px; justify-items: center; }

.page-hero { padding: 58px 0 24px; }
.page-hero-inner { display: grid; gap: 16px; max-width: 820px; }
.detail-layout { width: min(1100px, calc(100% - 32px)); margin: 0 auto; display: grid; grid-template-columns: 1fr; gap: 22px; padding: 30px 0 68px; }
.article-card { background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 30px; padding: 24px; box-shadow: var(--shadow-card); display: grid; gap: 20px; }
.article-card h2 { font-size: 25px; }
.article-card p + p { margin-top: 10px; }
.sidebar { display: grid; gap: 14px; align-content: start; }
.info-card { padding: 18px; }
.info-card h3 { font-size: 18px; margin-bottom: 8px; }
.mini-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.note-box { padding: 16px; border-radius: 18px; background: var(--primary-soft); border: 1px solid rgba(41,128,254,.18); color: #385273; }
.table-like { display: grid; gap: 10px; }
.table-like div { padding: 12px; border: 1px solid var(--soft-line); border-radius: 14px; background: #F8FBFF; }

.download-page { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 64px 0; display: grid; gap: 22px; }
.download-card { padding: 28px; border-radius: 32px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); display: grid; gap: 18px; justify-items: start; }
.download-steps { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; width: 100%; }
.download-steps li { padding: 14px; border-radius: 16px; background: #F8FBFF; border: 1px solid var(--soft-line); color: #4B5563; }
.download-steps b { color: var(--primary); margin-right: 8px; }

.about-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.about-card { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow-card); }
.about-card h2 { font-size: 24px; margin-bottom: 12px; }

.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 36px 0 20px; }
.footer-inner { width: min(1160px, calc(100% - 32px)); margin: 0 auto; display: grid; grid-template-columns: 1fr; gap: 24px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; color: var(--deep); }
.footer-brand img { width: 32px; height: 32px; border-radius: 10px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: #4B5563; }
.footer-links a:hover { color: var(--primary); }
.copyright { width: min(1160px, calc(100% - 32px)); margin: 24px auto 0; color: var(--muted); font-size: 13px; }

@media (min-width: 640px) {
  .ability-bar { grid-template-columns: repeat(2, 1fr); }
  .feature-showcase, .risk-grid, .ecosystem-grid, .mini-grid, .about-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; position: static; flex-direction: row; align-items: center; padding: 0; background: transparent; border: 0; box-shadow: none; border-radius: 0; gap: 2px; }
  .site-nav a { padding: 8px 10px; font-size: 14px; }
  .hero-grid { grid-template-columns: .98fr 1.02fr; gap: 48px; }
  .float-stack { position: absolute; inset: auto 18px 18px 18px; grid-template-columns: 1fr 1fr; }
  .floating-card { margin-top: 0; }
  .floating-card:nth-child(1) { transform: translateY(-18px); }
  .floating-card:nth-child(2) { transform: translateY(8px); }
  .floating-card:nth-child(3) { transform: translateY(-6px); }
  .floating-card:nth-child(4) { transform: translateY(18px); }
  .ability-bar { grid-template-columns: repeat(5, 1fr); }
  .feature-showcase { grid-template-columns: repeat(2, 1fr); }
  .product-panel { grid-template-columns: 1.05fr .95fr; padding: 34px; }
  .product-panel.reverse { grid-template-columns: .95fr 1.05fr; }
  .product-panel.reverse .panel-image { order: -1; }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .risk-grid { grid-template-columns: repeat(4, 1fr); }
  .ecosystem-grid { grid-template-columns: repeat(4, 1fr); }
  .detail-layout { grid-template-columns: minmax(0, 1fr) 320px; }
  .article-card { padding: 34px; }
  .about-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr 360px; }
}

@media (min-width: 1120px) {
  .site-nav a { padding: 8px 12px; }
}