:root {
    --primary: #2980FE;
    --primary-soft: #eaf3ff;
    --primary-very-soft: #f5f9ff;
    --white: #ffffff;
    --ink: #1f2937;
    --muted: #64748b;
    --soft: #f4f7fb;
    --line: #e5edf6;
    --deep: #111827;
    --radius: 24px;
    --shadow: 0 18px 50px rgba(41, 128, 254, .09);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, #ffffff 0%, #f7fbff 52%, #ffffff 100%);
    line-height: 1.72;
    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; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo, .footer-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); letter-spacing: -.02em; }
.logo img, .footer-logo img { width: 38px; height: 38px; object-fit: contain; border-radius: 12px; }
.nav-toggle {
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--ink);
    border-radius: 999px;
    padding: 10px 15px;
    font-weight: 700;
}
.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    gap: 8px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 12px;
}
.site-nav.is-open { display: flex; }
.site-nav a { padding: 10px 12px; border-radius: 14px; color: var(--muted); font-weight: 650; font-size: 14px; }
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.section { padding: 58px 0; }
.section-tight { padding: 34px 0; }
.eyebrow, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid #d9eaff;
    border-radius: 999px;
    padding: 7px 12px;
    font-size: 13px;
    font-weight: 800;
}
h1, h2, h3 { color: var(--deep); line-height: 1.18; margin: 0; letter-spacing: -.03em; }
h1 { font-size: clamp(34px, 8vw, 66px); }
h2 { font-size: clamp(26px, 5vw, 42px); }
h3 { font-size: 20px; }
p { margin: 0; color: var(--muted); }
.lead { font-size: 18px; color: #46566b; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    background: var(--primary);
    color: var(--white);
    border-radius: 999px;
    font-weight: 800;
    box-shadow: 0 14px 28px rgba(41, 128, 254, .22);
    transition: transform .2s ease, box-shadow .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(41, 128, 254, .28); }
.text-link { color: var(--primary); font-weight: 800; }
.web3-dashboard-hero {
    padding: 54px 0 38px;
    background:
        radial-gradient(circle at 80% 10%, rgba(41,128,254,.18), transparent 32%),
        linear-gradient(180deg, #f7fbff, #ffffff);
}
.hero-grid { display: grid; gap: 28px; align-items: center; }
.hero-copy { display: grid; gap: 20px; }
.security-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.security-tags span {
    padding: 9px 12px;
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: 999px;
    color: #415166;
    font-weight: 700;
    font-size: 13px;
}
.hero-console {
    position: relative;
    padding: 18px;
    background: rgba(255,255,255,.9);
    border: 1px solid var(--line);
    border-radius: 32px;
    box-shadow: var(--shadow);
}
.product-frame {
    border-radius: 28px;
    background: linear-gradient(145deg, #eef6ff, #ffffff);
    padding: 18px;
    min-height: 280px;
    display: grid;
    place-items: center;
}
.product-frame img { max-height: 430px; object-fit: contain; }
.status-panel { display: grid; gap: 10px; margin-top: 14px; }
.status-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px;
    border-radius: 18px;
    background: var(--white);
    border: 1px solid var(--line);
}
.status-card strong { color: var(--deep); }
.status-card span { color: var(--primary); font-size: 13px; font-weight: 800; }
.service-index { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 24px; }
.service-card {
    display: grid;
    gap: 10px;
    padding: 20px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 14px 36px rgba(15, 23, 42, .04);
}
.service-card .tag, .mini-tag { color: var(--primary); font-size: 12px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.service-card:hover { border-color: #c9e0ff; transform: translateY(-2px); transition: .2s ease; }
.console-section, .digital-assets-hub, .web3-ecosystem-section, .hardware-wallet-section, .swap-service-section, .privacy-boundary-section, .submit-chain-section, .developer-center-section {
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 22px;
    background: var(--white);
    box-shadow: var(--shadow);
}
.feature-grid { display: grid; gap: 22px; align-items: center; }
.feature-media { background: var(--primary-very-soft); border-radius: 28px; padding: 18px; border: 1px solid var(--line); }
.feature-media img { margin: 0 auto; max-height: 390px; object-fit: contain; }
.feature-copy { display: grid; gap: 16px; }
.feature-points, .check-list, .plain-list { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.feature-points li, .check-list li, .plain-list li {
    position: relative;
    padding: 12px 12px 12px 38px;
    background: var(--primary-very-soft);
    border: 1px solid var(--line);
    border-radius: 16px;
    color: #475569;
}
.feature-points li::before, .check-list li::before, .plain-list li::before {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    left: 16px;
    top: 20px;
    border-radius: 50%;
    background: var(--primary);
}
.hardware-wallet-section { background: linear-gradient(135deg, #f7fbff, #ffffff); }
.swap-service-section { background: linear-gradient(135deg, #ffffff, #f5f9ff); }
.boundary-grid, .submit-grid, .developer-grid { display: grid; gap: 18px; align-items: stretch; margin-top: 20px; }
.boundary-card, .submit-card, .doc-card, .safety-panel, .note-card, .content-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 20px;
}
.boundary-card { border-left: 5px solid var(--primary); }
.submit-card { background: linear-gradient(180deg, #ffffff, #f7fbff); }
.code-panel {
    background: #f8fbff;
    color: #26364b;
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 20px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    overflow: hidden;
}
.code-panel span { color: var(--primary); }
.process-steps { display: grid; gap: 14px; margin-top: 24px; counter-reset: step; }
.step-card {
    position: relative;
    padding: 20px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: 0 12px 30px rgba(15,23,42,.035);
}
.step-card::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-bottom: 12px;
    color: var(--white);
    background: var(--primary);
    border-radius: 14px;
    font-weight: 900;
}
.risk-grid { display: grid; gap: 14px; margin-top: 24px; }
.risk-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-top: 4px solid var(--primary);
    border-radius: 22px;
    padding: 20px;
}
.risk-card strong { display: block; color: var(--deep); margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; margin-top: 24px; }
.faq-item {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 18px;
}
.faq-item h3 { margin-bottom: 8px; }
.cta-section {
    text-align: center;
    padding: 54px 20px;
    border-radius: 32px;
    background: linear-gradient(135deg, #eaf3ff, #ffffff 62%, #f7fbff);
    border: 1px solid var(--line);
    display: grid;
    justify-items: center;
    gap: 16px;
}
.page-hero {
    padding: 48px 0 28px;
    background: radial-gradient(circle at 90% 0%, rgba(41,128,254,.12), transparent 34%), linear-gradient(180deg, #f7fbff, #ffffff);
}
.page-hero-inner { display: grid; gap: 18px; max-width: 860px; }
.page-layout { display: grid; gap: 24px; align-items: start; }
.article-body { display: grid; gap: 18px; }
.article-body p { font-size: 16px; }
.aside-panel { display: grid; gap: 14px; }
.info-strip { display: flex; flex-wrap: wrap; gap: 10px; }
.info-strip span {
    padding: 8px 11px;
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: 999px;
    color: var(--muted);
    font-weight: 700;
    font-size: 13px;
}
.category-grid { display: grid; gap: 14px; }
.site-footer { margin-top: 54px; background: #f7fbff; border-top: 1px solid var(--line); padding: 36px 0 18px; }
.footer-grid { display: grid; gap: 24px; }
.footer-grid p { margin-top: 12px; max-width: 460px; }
.footer-grid h3 { font-size: 15px; margin-bottom: 12px; }
.footer-grid a:not(.footer-logo) { display: block; color: var(--muted); margin: 7px 0; }
.footer-bottom { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; color: var(--muted); font-size: 13px; }
@media (min-width: 640px) {
    .service-index, .risk-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
    .status-panel { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
    .nav-toggle { display: none; }
    .site-nav { position: static; display: flex; flex-direction: row; align-items: center; padding: 0; border: 0; box-shadow: none; background: transparent; }
    .site-nav a { padding: 8px 10px; }
    .web3-dashboard-hero { padding: 86px 0 58px; }
    .hero-grid { grid-template-columns: 1.02fr .98fr; gap: 42px; }
    .service-index { grid-template-columns: repeat(4, 1fr); }
    .service-card:nth-child(1), .service-card:nth-child(7) { grid-column: span 2; }
    .feature-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
    .feature-grid.reverse .feature-media { order: 2; }
    .boundary-grid, .submit-grid, .developer-grid { grid-template-columns: 1fr 1fr; }
    .process-steps { grid-template-columns: repeat(3, 1fr); }
    .risk-grid { grid-template-columns: repeat(4, 1fr); }
    .page-layout { grid-template-columns: minmax(0, 1fr) 330px; }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.5fr .7fr .7fr; }
    .footer-bottom { flex-direction: row; justify-content: space-between; }
}
@media (min-width: 1120px) {
    .hero-console { padding: 22px; }
    .status-panel { grid-template-columns: repeat(2, 1fr); }
}