:root {
    --primary: #2980FE;
    --primary-deep: #1269df;
    --primary-soft: #eef5ff;
    --bg: #f6f8fc;
    --surface: #ffffff;
    --surface-soft: #f8fbff;
    --text: #1f2d3d;
    --muted: #64748b;
    --muted-2: #8a99ad;
    --border: #e5ebf3;
    --line: #dce5ef;
    --shadow: 0 18px 45px rgba(31, 45, 61, 0.08);
    --shadow-soft: 0 12px 28px rgba(41, 128, 254, 0.08);
    --radius-lg: 30px;
    --radius-md: 22px;
    --radius-sm: 16px;
    --max: 1180px;
}

* { 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(--text);
    background: linear-gradient(180deg, #ffffff 0%, #f5f8fe 35%, #ffffff 100%);
    line-height: 1.72;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 16px; color: var(--muted); }
h1, h2, h3 { margin: 0 0 16px; line-height: 1.18; color: var(--text); }
h1 { font-size: clamp(34px, 8vw, 62px); letter-spacing: -1.4px; }
h2 { font-size: clamp(26px, 5vw, 42px); letter-spacing: -0.7px; }
h3 { font-size: 20px; }
ul, ol { margin: 0; padding-left: 22px; color: var(--muted); }
li + li { margin-top: 8px; }
main { min-height: 65vh; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.92);
    border-bottom: 1px solid rgba(229,235,243,.9);
    backdrop-filter: blur(16px);
}
.header-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); }
.logo-img { width: 34px; height: 34px; object-fit: contain; border-radius: 10px; }
.brand-text { white-space: nowrap; }
.nav-toggle { display: none; }
.nav-toggle-label {
    width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 14px;
    display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; cursor: pointer; background: #fff;
}
.nav-toggle-label span { width: 18px; height: 2px; background: var(--text); border-radius: 4px; }
.site-nav {
    display: none;
    position: absolute;
    top: 64px; left: 14px; right: 14px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--shadow);
}
.site-nav a { display: block; padding: 12px 14px; color: var(--muted); border-radius: 14px; font-weight: 650; }
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-toggle:checked ~ .site-nav { display: block; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 18px; }
.section { padding: 54px 0; }
.section.compact { padding: 34px 0; }
.section-heading { max-width: 780px; margin-bottom: 24px; }
.section-heading .eyebrow, .eyebrow, .badge {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--primary); background: var(--primary-soft); border: 1px solid rgba(41,128,254,.18);
    padding: 7px 12px; border-radius: 999px; font-size: 13px; font-weight: 800; margin-bottom: 14px;
}
.small-link { color: var(--primary); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; }
.small-link::after { content: '›'; font-size: 18px; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    border: 1px solid var(--primary);
    box-shadow: 0 14px 28px rgba(41, 128, 254, .22);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover { transform: translateY(-2px); background: var(--primary-deep); box-shadow: 0 18px 36px rgba(41, 128, 254, .28); }

.web3-dashboard-hero {
    position: relative;
    overflow: hidden;
    padding: 58px 0 34px;
}
.web3-dashboard-hero::before {
    content: '';
    position: absolute;
    inset: -220px -120px auto auto;
    width: 460px; height: 460px;
    background: radial-gradient(circle, rgba(41,128,254,.18), transparent 64%);
    pointer-events: none;
}
.hero-grid { display: grid; gap: 28px; align-items: center; }
.hero-copy { position: relative; z-index: 1; }
.hero-copy p { max-width: 660px; font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 24px 0; }
.security-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.security-tags span {
    padding: 9px 12px; border-radius: 999px; background: #fff; color: var(--muted); border: 1px solid var(--border); font-size: 13px; font-weight: 700;
}
.console-visual {
    position: relative;
    background: linear-gradient(145deg, #ffffff, #eef5ff);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    box-shadow: var(--shadow);
    overflow: hidden;
}
.console-visual::after {
    content: '';
    position: absolute; inset: auto -40px -70px auto; width: 190px; height: 190px;
    background: rgba(41,128,254,.12); border-radius: 50%;
}
.product-shot { width: min(300px, 80%); margin: 0 auto 18px; filter: drop-shadow(0 18px 28px rgba(24,45,70,.12)); }
.status-grid { display: grid; grid-template-columns: 1fr; gap: 12px; position: relative; z-index: 1; }
.status-card {
    background: rgba(255,255,255,.86); border: 1px solid var(--border); border-radius: 18px; padding: 14px;
    display: flex; justify-content: space-between; gap: 14px; align-items: center;
}
.status-card strong { display: block; font-size: 15px; }
.status-card span { color: var(--muted); font-size: 13px; }
.pulse { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 7px rgba(41,128,254,.12); flex: 0 0 auto; }

.service-index { display: grid; gap: 14px; }
.service-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-soft);
    min-height: 188px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.service-card .tag, .mini-tag {
    display: inline-flex; width: fit-content; color: var(--primary); font-size: 12px; font-weight: 850; background: var(--primary-soft); border-radius: 999px; padding: 5px 10px; margin-bottom: 12px;
}
.service-card p { font-size: 15px; }

.feature-panel {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    background: #fff;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}
.feature-grid { display: grid; gap: 24px; align-items: center; }
.feature-image {
    background: linear-gradient(145deg, #f8fbff, #edf4ff);
    border: 1px solid var(--border);
    border-radius: 26px;
    padding: 20px;
    display: grid;
    place-items: center;
}
.feature-image img { max-height: 360px; object-fit: contain; }
.feature-points { display: grid; gap: 12px; margin-top: 18px; }
.point-card, .check-card {
    padding: 14px; border-radius: 18px; background: var(--surface-soft); border: 1px solid var(--border);
}
.point-card strong, .check-card strong { display: block; color: var(--text); margin-bottom: 4px; }
.point-card span, .check-card span { color: var(--muted); font-size: 14px; }
.digital-assets-hub { background: linear-gradient(180deg, #ffffff, #f8fbff); }
.web3-ecosystem-section .feature-panel { background: linear-gradient(145deg, #ffffff, #f5f9ff); }
.hardware-wallet-section { background: #f5f8fc; }
.hardware-wallet-section .feature-panel { background: #fff; }
.swap-service-section .feature-panel { background: linear-gradient(145deg, #ffffff, #f8fbff); }

.privacy-boundary-section, .submit-chain-section, .developer-center-section { padding: 54px 0; }
.boundary-grid, .submit-grid, .developer-grid { display: grid; gap: 18px; }
.boundary-panel, .ecosystem-panel, .code-panel, .side-panel, .content-panel, .faq-item, .download-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow-soft);
}
.boundary-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.boundary-tags span { color: var(--primary); background: var(--primary-soft); border-radius: 999px; padding: 8px 11px; font-weight: 750; font-size: 13px; }
.ecosystem-panel { border-left: 5px solid var(--primary); }
.code-panel { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; background: #f8fbff; }
.code-line { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.code-line:last-child { border-bottom: 0; }
.code-line b { color: var(--primary); }

.process-steps { display: grid; gap: 14px; counter-reset: step; }
.step-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 18px 18px;
    box-shadow: var(--shadow-soft);
}
.step-number {
    width: 36px; height: 36px; border-radius: 12px; background: var(--primary); color: #fff; display: inline-grid; place-items: center; font-weight: 900; margin-bottom: 12px;
}
.risk-grid { display: grid; gap: 14px; }
.risk-card {
    background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--primary); border-radius: 20px; padding: 18px; box-shadow: var(--shadow-soft);
}
.risk-card h3 { font-size: 18px; }
.risk-card .advice { color: var(--text); font-weight: 800; margin: 10px 0 0; }
.faq-grid { display: grid; gap: 14px; }
.faq-item h3 { font-size: 18px; }
.cta-section { padding: 60px 0 72px; }
.cta-card {
    background: linear-gradient(135deg, #edf5ff, #ffffff);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 34px 22px;
    text-align: center;
    box-shadow: var(--shadow-soft);
}
.cta-card p { max-width: 680px; margin-left: auto; margin-right: auto; }

.page-hero { padding: 54px 0 24px; }
.page-hero-inner {
    max-width: 920px;
    background: linear-gradient(135deg, #ffffff, #f2f7ff);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-soft);
}
.page-hero h1 { font-size: clamp(32px, 7vw, 52px); }
.content-layout { display: grid; gap: 18px; align-items: start; }
.content-panel h2, .side-panel h2 { font-size: 25px; }
.info-list { display: grid; gap: 12px; margin: 18px 0; padding: 0; list-style: none; }
.info-list li { background: var(--surface-soft); border: 1px solid var(--border); border-radius: 16px; padding: 13px 14px; color: var(--muted); }
.notice-box { border-radius: 20px; border: 1px solid rgba(41,128,254,.2); background: var(--primary-soft); padding: 18px; margin: 18px 0; color: var(--muted); }
.category-grid { display: grid; gap: 14px; margin: 20px 0; }
.category-card { background: var(--surface-soft); border: 1px solid var(--border); border-radius: 18px; padding: 16px; }
.safety-panel { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; box-shadow: var(--shadow-soft); }
.download-panel { text-align: center; margin-top: 18px; }
.download-steps { display: grid; gap: 14px; margin: 22px 0; }
.download-step { display: flex; gap: 14px; align-items: flex-start; background: var(--surface-soft); border: 1px solid var(--border); border-radius: 18px; padding: 15px; }
.download-step b { background: var(--primary); color: #fff; min-width: 34px; height: 34px; border-radius: 12px; display: inline-grid; place-items: center; }
.about-grid { display: grid; gap: 18px; }
.about-card { background: #fff; border: 1px solid var(--border); border-radius: 22px; padding: 22px; box-shadow: var(--shadow-soft); }
.faq-list { display: grid; gap: 14px; }
.faq-list .faq-item { padding: 20px; }

.site-footer { background: #ffffff; border-top: 1px solid var(--border); }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 34px 18px; display: grid; gap: 20px; }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-logo { width: 38px; height: 38px; object-fit: contain; border-radius: 10px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px; }
.footer-links a { color: var(--muted); background: var(--surface-soft); border: 1px solid var(--border); padding: 9px 12px; border-radius: 999px; }
.footer-bottom { border-top: 1px solid var(--border); color: var(--muted-2); text-align: center; font-size: 13px; padding: 16px 18px 24px; }

@media (min-width: 640px) {
    .service-index { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .risk-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .download-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 860px) {
    .nav-toggle-label { display: none; }
    .site-nav { position: static; display: flex; align-items: center; gap: 4px; padding: 0; border: 0; box-shadow: none; background: transparent; }
    .site-nav a { padding: 8px 10px; font-size: 14px; }
    .header-inner { padding: 16px 22px; }
    .hero-grid { grid-template-columns: minmax(0, 1.04fr) minmax(360px, .96fr); gap: 38px; }
    .status-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .service-index { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .service-card:nth-child(1), .service-card:nth-child(7) { grid-column: span 2; }
    .feature-grid { grid-template-columns: 1fr 1fr; }
    .feature-grid.reverse .feature-copy { order: 2; }
    .feature-grid.reverse .feature-image { order: 1; }
    .feature-panel { padding: 34px; }
    .boundary-grid { grid-template-columns: 1.15fr .85fr; }
    .submit-grid, .developer-grid { grid-template-columns: .9fr 1.1fr; }
    .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) 330px; }
    .page-hero-inner { padding: 42px; }
    .about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-inner { grid-template-columns: 1fr auto; align-items: center; }
}
@media (min-width: 1120px) {
    .site-nav a { padding: 9px 12px; }
    .service-index { grid-template-columns: repeat(7, minmax(0, 1fr)); }
    .service-card:nth-child(1), .service-card:nth-child(7) { grid-column: span 1; }
}