:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-light: #F5F9FF;
    --text: #1F2937;
    --muted: #667085;
    --soft: #F5F7FA;
    --line: #E5EAF0;
    --white: #FFFFFF;
    --deep: #111827;
    --shadow: 0 18px 45px rgba(32, 65, 120, 0.08);
    --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    background: linear-gradient(180deg, #F7FAFF 0%, #FFFFFF 18%, #F7FAFF 100%);
    color: var(--text);
    line-height: 1.75;
    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: 50;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}
.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand, .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--deep);
    letter-spacing: -0.02em;
}
.brand-logo, .footer-logo {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 12px;
}
.site-nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    padding: 12px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.site-nav.open { display: grid; gap: 4px; }
.site-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    color: var(--muted);
    font-weight: 700;
    font-size: 14px;
}
.site-nav a:hover, .site-nav a.active {
    color: var(--primary);
    background: var(--primary-soft);
}
.nav-toggle {
    width: 44px;
    height: 44px;
    display: inline-grid;
    place-items: center;
    gap: 4px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
}
.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--deep);
    border-radius: 999px;
}
.section { padding: 58px 0; }
.section.tight { padding: 42px 0; }
.eyebrow, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.02em;
}
.section-title { max-width: 760px; margin: 0 0 26px; }
.section-title.center { text-align: center; margin-inline: auto; }
.section-title h1, .section-title h2 {
    margin: 10px 0 12px;
    color: var(--deep);
    line-height: 1.16;
    letter-spacing: -0.045em;
}
.section-title h1 { font-size: clamp(34px, 8vw, 66px); }
.section-title h2 { font-size: clamp(28px, 6vw, 46px); }
.section-title p { color: var(--muted); margin: 0; font-size: 17px; }
.web3-dashboard-hero {
    position: relative;
    padding: 54px 0 48px;
    overflow: hidden;
}
.web3-dashboard-hero::before {
    content: "";
    position: absolute;
    inset: -120px -90px auto auto;
    width: 420px;
    height: 420px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(41,128,254,0.20), rgba(41,128,254,0));
    pointer-events: none;
}
.hero-grid {
    display: grid;
    gap: 32px;
    align-items: center;
}
.hero-copy h1 {
    margin: 14px 0 18px;
    color: var(--deep);
    font-size: clamp(36px, 9vw, 72px);
    line-height: 1.05;
    letter-spacing: -0.055em;
}
.hero-copy p {
    margin: 0 0 22px;
    color: var(--muted);
    font-size: 17px;
}
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    min-width: 148px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    box-shadow: 0 14px 26px rgba(41,128,254,0.22);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(41,128,254,0.26); }
.security-tags, .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}
.security-tags span, .tag-row span {
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--white);
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}
.hero-console {
    position: relative;
    display: grid;
    gap: 16px;
    padding: 16px;
    border: 1px solid rgba(41,128,254,0.18);
    border-radius: 30px;
    background: linear-gradient(145deg, rgba(255,255,255,0.95), rgba(245,249,255,0.9));
    box-shadow: var(--shadow);
}
.product-frame {
    position: relative;
    min-height: 280px;
    display: grid;
    place-items: center;
    border-radius: 24px;
    overflow: hidden;
    background: linear-gradient(160deg, #FFFFFF 0%, #EDF5FF 100%);
    border: 1px solid var(--line);
}
.product-frame img { max-height: 360px; object-fit: contain; }
.status-panel {
    display: grid;
    gap: 10px;
}
.status-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 18px;
    background: var(--white);
    border: 1px solid var(--line);
}
.status-card b { color: var(--deep); font-size: 15px; }
.status-card small { color: var(--muted); display: block; line-height: 1.45; }
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(41,128,254,0.12);
}
.status-pill {
    padding: 5px 9px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
}
.service-index {
    display: grid;
    gap: 14px;
}
.service-card, .info-card, .risk-card, .faq-item, .step-card, .mini-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 12px 28px rgba(32,65,120,0.05);
}
.service-card {
    padding: 20px;
    display: grid;
    gap: 12px;
}
.card-label {
    display: inline-flex;
    width: fit-content;
    padding: 5px 10px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 800;
    font-size: 12px;
}
.service-card h3, .info-card h3, .risk-card h3, .mini-card h3, .step-card h3 {
    margin: 0;
    color: var(--deep);
    line-height: 1.3;
}
.service-card p, .info-card p, .risk-card p, .mini-card p, .step-card p { margin: 0; color: var(--muted); }
.text-link {
    color: var(--primary);
    font-weight: 900;
    display: inline-flex;
    align-items: center;
    width: fit-content;
}
.feature-panel {
    display: grid;
    gap: 22px;
    align-items: center;
    padding: 24px;
    border-radius: 30px;
    border: 1px solid var(--line);
    background: var(--white);
    box-shadow: var(--shadow);
}
.feature-panel.alt { background: linear-gradient(160deg, #FFFFFF 0%, #F2F7FF 100%); }
.feature-media {
    display: grid;
    place-items: center;
    min-height: 260px;
    border-radius: 24px;
    background: linear-gradient(160deg, #F7FAFF, #FFFFFF);
    border: 1px solid var(--line);
    overflow: hidden;
}
.feature-media img { max-height: 360px; object-fit: contain; padding: 10px; }
.feature-copy h2 { margin: 10px 0 12px; font-size: clamp(26px, 6vw, 42px); line-height: 1.18; color: var(--deep); letter-spacing: -0.035em; }
.feature-copy p { color: var(--muted); margin: 0 0 16px; }
.check-list, .plain-list {
    display: grid;
    gap: 10px;
    padding: 0;
    margin: 16px 0;
    list-style: none;
}
.check-list li, .plain-list li {
    position: relative;
    padding: 12px 12px 12px 38px;
    border-radius: 16px;
    background: var(--primary-light);
    color: var(--text);
}
.check-list li::before, .plain-list li::before {
    content: "";
    position: absolute;
    left: 15px;
    top: 19px;
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: var(--primary);
}
.digital-assets-hub, .web3-ecosystem-section, .hardware-wallet-section, .swap-service-section { padding: 64px 0; }
.privacy-boundary-section, .submit-chain-section, .developer-center-section { padding: 64px 0; }
.safety-panel {
    padding: 24px;
    border-radius: 30px;
    background: linear-gradient(145deg, #FFFFFF, #F3F8FF);
    border: 1px solid rgba(41,128,254,0.16);
    box-shadow: var(--shadow);
}
.safety-panel-grid, .category-grid, .risk-grid, .faq-grid, .process-steps {
    display: grid;
    gap: 16px;
}
.info-card, .mini-card { padding: 20px; }
.info-card strong, .mini-card strong { color: var(--deep); }
.process-steps { counter-reset: step; }
.step-card {
    position: relative;
    padding: 22px;
    overflow: hidden;
}
.step-number {
    display: inline-grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 15px;
    background: var(--primary);
    color: var(--white);
    font-weight: 900;
    margin-bottom: 14px;
}
.risk-card {
    padding: 20px;
    border-left: 4px solid var(--primary);
}
.risk-card .suggestion {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--text);
    font-weight: 700;
    font-size: 14px;
}
.faq-item {
    padding: 20px;
}
.faq-item h3 {
    margin: 0 0 8px;
    color: var(--deep);
    font-size: 18px;
}
.faq-item p { margin: 0; color: var(--muted); }
.cta-section {
    margin: 34px 0 72px;
    text-align: center;
}
.cta-card {
    padding: 34px 22px;
    border-radius: 32px;
    background: linear-gradient(135deg, #FFFFFF, #EBF4FF);
    border: 1px solid rgba(41,128,254,0.18);
    box-shadow: var(--shadow);
}
.cta-card h2 { margin: 0 0 12px; color: var(--deep); font-size: clamp(26px, 6vw, 42px); line-height: 1.2; }
.cta-card p { margin: 0 auto 20px; color: var(--muted); max-width: 720px; }
.page-hero {
    padding: 54px 0 34px;
    background: radial-gradient(circle at top right, rgba(41,128,254,0.14), transparent 34%), linear-gradient(180deg, #F7FAFF, #FFFFFF);
}
.page-hero-inner {
    display: grid;
    gap: 18px;
    max-width: 880px;
}
.page-hero h1 {
    margin: 0;
    font-size: clamp(34px, 8vw, 58px);
    line-height: 1.12;
    color: var(--deep);
    letter-spacing: -0.045em;
}
.page-hero p { margin: 0; color: var(--muted); font-size: 17px; }
.content-layout {
    display: grid;
    gap: 24px;
    align-items: start;
    padding: 40px 0 70px;
}
.article-card {
    padding: 24px;
    border-radius: 30px;
    background: var(--white);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.article-card h2 { margin: 0 0 12px; color: var(--deep); font-size: 28px; line-height: 1.25; }
.article-card h3 { margin: 24px 0 8px; color: var(--deep); font-size: 21px; }
.article-card p { color: var(--muted); margin: 0 0 14px; }
.side-panel {
    display: grid;
    gap: 14px;
}
.side-panel .mini-card { background: linear-gradient(180deg, #FFFFFF, #F7FAFF); }
.download-single { margin-top: 24px; }
.notice-box {
    padding: 18px;
    border-radius: 22px;
    border: 1px solid rgba(41,128,254,0.18);
    background: var(--primary-light);
    color: var(--text);
}
.notice-box p { margin: 0; color: var(--text); }
.download-flow {
    display: grid;
    gap: 14px;
    margin-top: 18px;
}
.download-flow li {
    padding: 16px 18px;
    border-radius: 18px;
    background: var(--white);
    border: 1px solid var(--line);
}
.faq-list { display: grid; gap: 14px; padding: 40px 0 70px; }
.site-footer {
    background: #F4F7FB;
    border-top: 1px solid var(--line);
    padding: 40px 0 20px;
}
.footer-grid {
    display: grid;
    gap: 26px;
}
.footer-grid h2 {
    font-size: 15px;
    color: var(--deep);
    margin: 0 0 12px;
}
.footer-grid p, .footer-bottom p { color: var(--muted); margin: 12px 0 0; }
.footer-grid a:not(.footer-brand) {
    display: block;
    color: var(--muted);
    margin: 8px 0;
}
.footer-grid a:hover { color: var(--primary); }
.footer-bottom {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    font-size: 13px;
}
.code-panel {
    padding: 18px;
    border-radius: 22px;
    background: #172033;
    color: #EAF3FF;
    overflow: hidden;
}
.code-panel pre {
    margin: 0;
    white-space: pre-wrap;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    line-height: 1.7;
}
@media (min-width: 640px) {
    .service-index, .category-grid, .risk-grid, .faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .status-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 900px) {
    .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 { padding: 9px 10px; font-size: 13px; }
    .hero-grid { grid-template-columns: 1.02fr .98fr; gap: 46px; }
    .hero-console { grid-template-columns: 1.08fr .92fr; padding: 20px; }
    .feature-panel { grid-template-columns: 1fr 1fr; padding: 34px; }
    .feature-panel.reverse .feature-media { order: 2; }
    .service-index { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .service-card.wide { grid-column: span 2; }
    .safety-panel-grid { grid-template-columns: 1.1fr .9fr; }
    .submit-grid, .developer-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 22px; align-items: stretch; }
    .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .risk-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .content-layout { grid-template-columns: minmax(0, 1fr) 320px; }
    .footer-grid { grid-template-columns: 1.4fr .7fr .7fr; }
}
@media (min-width: 1120px) {
    .site-nav a { padding: 10px 13px; font-size: 14px; }
    .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}