:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-soft-2: #F5F9FF;
    --text: #1F2937;
    --muted: #667085;
    --line: #E5EAF2;
    --surface: #FFFFFF;
    --surface-soft: #F7F9FC;
    --surface-blue: #F3F8FF;
    --deep: #111827;
    --radius-sm: 16px;
    --radius: 22px;
    --radius-lg: 30px;
    --shadow: 0 18px 55px rgba(31, 41, 55, 0.08);
    --shadow-soft: 0 12px 28px rgba(41, 128, 254, 0.08);
}

* { 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%, #F7FAFF 46%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
p { margin: 0 0 16px; color: var(--muted); }
h1, h2, h3 { color: var(--deep); line-height: 1.18; margin: 0 0 16px; }
h1 { font-size: clamp(2rem, 7vw, 4.7rem); letter-spacing: -0.05em; }
h2 { font-size: clamp(1.55rem, 4vw, 2.5rem); letter-spacing: -0.035em; }
h3 { font-size: 1.12rem; }
ul, ol { margin: 0; padding-left: 20px; color: var(--muted); }
li + li { margin-top: 8px; }

.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.section { padding: 58px 0; }
.section-tight { padding: 36px 0; }
.eyebrow, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, 0.16);
    border-radius: 999px;
    padding: 7px 12px;
    font-weight: 700;
    font-size: 0.88rem;
    margin-bottom: 16px;
}
.eyebrow::before, .category-badge::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 999px;
    box-shadow: 0 0 0 4px rgba(41,128,254,0.12);
}
.section-head { margin-bottom: 24px; }
.section-head p { max-width: 760px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,0.92);
    border-bottom: 1px solid rgba(229,234,242,0.86);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.brand-logo { width: 40px; height: 40px; object-fit: contain; border-radius: 12px; }
.brand-text { font-weight: 800; color: var(--deep); white-space: nowrap; letter-spacing: -0.02em; }
.nav-toggle {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    border-radius: 14px;
    padding: 9px 13px;
    font-weight: 700;
}
.site-nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 10px;
    box-shadow: var(--shadow);
}
.site-nav.is-open { display: grid; }
.site-nav a {
    padding: 12px 14px;
    border-radius: 14px;
    color: var(--muted);
    font-weight: 700;
    font-size: 0.95rem;
}
.site-nav a.active, .site-nav a:hover { color: var(--primary); background: var(--primary-soft); }

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 22px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 14px 30px rgba(41,128,254,0.25);
    border: 1px solid rgba(41,128,254,0.35);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    cursor: pointer;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(41,128,254,0.30); }

.web3-dashboard-hero {
    padding: 42px 0 34px;
    background:
        radial-gradient(circle at 82% 8%, rgba(41,128,254,0.18), transparent 34%),
        linear-gradient(180deg, #FFFFFF 0%, #F5F9FF 100%);
    border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; gap: 28px; align-items: center; }
.hero-copy { max-width: 680px; }
.hero-copy .lead { font-size: 1.08rem; color: #4B5563; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 24px 0 20px; }
.security-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.security-tags span, .pill {
    display: inline-flex;
    border: 1px solid var(--line);
    background: rgba(255,255,255,0.88);
    color: #475467;
    border-radius: 999px;
    padding: 7px 11px;
    font-weight: 700;
    font-size: 0.86rem;
}
.hero-console {
    background: rgba(255,255,255,0.78);
    border: 1px solid rgba(229,234,242,0.9);
    border-radius: var(--radius-lg);
    padding: 16px;
    box-shadow: var(--shadow);
}
.product-frame {
    position: relative;
    overflow: hidden;
    border-radius: 28px;
    background: linear-gradient(135deg, #F2F7FF 0%, #FFFFFF 55%, #EAF3FF 100%);
    min-height: 310px;
    display: grid;
    place-items: center;
    padding: 20px;
}
.product-frame img { max-height: 420px; object-fit: contain; filter: drop-shadow(0 28px 35px rgba(16,24,40,0.12)); }
.status-grid { display: grid; gap: 10px; margin-top: 12px; }
.status-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 14px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}
.status-card strong { display: block; color: var(--deep); font-size: 0.95rem; }
.status-card span { color: var(--muted); font-size: 0.84rem; }
.status-dot { width: 10px; height: 10px; margin-top: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px rgba(41,128,254,0.13); flex: 0 0 auto; }

.service-index { display: grid; gap: 14px; }
.service-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-soft);
    min-height: 180px;
}
.service-card .tag { color: var(--primary); font-weight: 800; font-size: 0.8rem; letter-spacing: .04em; }
.service-card a, .text-link { color: var(--primary); font-weight: 800; display: inline-flex; margin-top: 8px; }
.service-card p { font-size: 0.95rem; }

.feature-panel {
    display: grid;
    gap: 24px;
    align-items: center;
    padding: 26px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}
.feature-panel.alt { background: linear-gradient(135deg, #F6FAFF 0%, #FFFFFF 70%); }
.feature-panel.soft { background: var(--surface-soft); }
.feature-media {
    border-radius: 26px;
    background: linear-gradient(135deg, #EEF6FF 0%, #FFFFFF 100%);
    border: 1px solid var(--line);
    padding: 16px;
    display: grid;
    place-items: center;
    min-height: 260px;
}
.feature-media img { max-height: 360px; object-fit: contain; }
.feature-list { display: grid; gap: 10px; margin: 18px 0; }
.feature-list li { list-style: none; position: relative; padding-left: 26px; color: var(--muted); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); }
.digital-assets-hub .feature-panel { border-left: 4px solid var(--primary); }
.web3-ecosystem-section { background: #FFFFFF; }
.hardware-wallet-section { background: linear-gradient(180deg, #F6F9FE 0%, #FFFFFF 100%); }
.swap-service-section .feature-panel { background: linear-gradient(135deg, #FFFFFF 0%, #F4F8FF 100%); }

.privacy-boundary-section .privacy-grid,
.submit-chain-section .submit-grid,
.developer-center-section .developer-grid,
.content-shell {
    display: grid;
    gap: 18px;
}
.safety-panel, .info-card, .article-card, .side-panel, .code-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow-soft);
}
.safety-panel { border-top: 4px solid var(--primary); }
.boundary-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.boundary-tags span { color: var(--primary); background: var(--primary-soft); border-radius: 999px; padding: 6px 10px; font-weight: 800; font-size: 0.84rem; }
.category-grid { display: grid; gap: 14px; }
.category-grid .info-card { min-height: 150px; }

.submit-card-list { display: grid; gap: 12px; }
.submit-card-list .info-card { display: flex; gap: 14px; align-items: flex-start; }
.number-mark {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    flex: 0 0 auto;
    background: var(--primary);
    color: #fff;
    display: inline-grid;
    place-items: center;
    font-weight: 900;
}
.code-panel {
    background: linear-gradient(135deg, #F7FAFF 0%, #FFFFFF 100%);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}
.code-row { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); padding: 12px 0; color: #475467; }
.code-row:last-child { border-bottom: 0; }
.code-row span:first-child { color: var(--primary); font-weight: 800; }

.process-steps { display: grid; gap: 14px; }
.step-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 20px;
    position: relative;
}
.step-card .step-num { color: var(--primary); font-weight: 900; font-size: 1.7rem; line-height: 1; }
.step-card a { color: var(--primary); font-weight: 800; }

.risk-grid { display: grid; gap: 14px; }
.risk-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 4px solid var(--primary);
    border-radius: 20px;
    padding: 18px;
}
.risk-card .risk-name { color: var(--deep); font-weight: 900; }
.risk-card .risk-action { color: var(--primary); font-weight: 800; }
.risk-card a { color: var(--primary); font-weight: 800; }

.faq-list { display: grid; gap: 12px; }
.faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
}
.faq-item h2, .faq-item h3 { font-size: 1.05rem; margin-bottom: 8px; }
.faq-item p { margin-bottom: 0; }

.cta-section {
    padding: 54px 0;
    background: radial-gradient(circle at 20% 10%, rgba(41,128,254,0.12), transparent 30%), linear-gradient(135deg, #F4F8FF 0%, #FFFFFF 100%);
}
.cta-panel {
    text-align: center;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 34px 20px;
    background: rgba(255,255,255,0.85);
    box-shadow: var(--shadow-soft);
}
.cta-panel p { max-width: 680px; margin-left: auto; margin-right: auto; }

.page-hero {
    padding: 48px 0 26px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F9FF 100%);
    border-bottom: 1px solid var(--line);
}
.page-hero .summary { font-size: 1.08rem; max-width: 820px; }
.article-layout { display: grid; gap: 18px; align-items: start; }
.article-card h2 { font-size: 1.35rem; margin-top: 4px; }
.checklist-grid { display: grid; gap: 12px; }
.check-item {
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 16px;
}
.check-item strong { display: block; color: var(--deep); margin-bottom: 6px; }
.side-panel { background: linear-gradient(180deg, #FFFFFF 0%, #F6FAFF 100%); }
.side-panel a { display: block; color: var(--primary); font-weight: 800; padding: 9px 0; border-bottom: 1px solid var(--line); }
.side-panel a:last-child { border-bottom: 0; }
.info-band {
    background: var(--primary-soft-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
}
.download-card { margin-top: 18px; }

.download-steps { counter-reset: download; display: grid; gap: 12px; margin: 24px 0; }
.download-step {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
}
.download-step::before {
    counter-increment: download;
    content: counter(download, decimal-leading-zero);
    color: var(--primary);
    font-weight: 900;
    display: block;
    margin-bottom: 6px;
}

.site-footer { background: #FFFFFF; border-top: 1px solid var(--line); padding-top: 38px; }
.footer-grid { display: grid; gap: 24px; }
.footer-brand { color: var(--deep); font-weight: 900; font-size: 1.15rem; margin-bottom: 10px; }
.site-footer h2 { font-size: 1rem; margin-bottom: 10px; }
.site-footer a { display: block; color: var(--muted); padding: 5px 0; }
.site-footer a:hover { color: var(--primary); }
.footer-bottom {
    border-top: 1px solid var(--line);
    margin-top: 26px;
    padding: 18px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    color: var(--muted);
    font-size: 0.9rem;
}

@media (min-width: 640px) {
    .status-grid, .service-index, .category-grid, .checklist-grid, .risk-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .process-steps { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .download-steps { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (min-width: 900px) {
    .nav-toggle { display: none; }
    .site-nav {
        display: flex;
        position: static;
        padding: 0;
        box-shadow: none;
        border: 0;
        background: transparent;
        border-radius: 0;
        gap: 2px;
        align-items: center;
    }
    .site-nav a { padding: 9px 10px; font-size: 0.89rem; }
    .web3-dashboard-hero { padding: 74px 0 52px; }
    .hero-grid { grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr); gap: 44px; }
    .status-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .status-card:first-child { grid-column: span 2; }
    .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-panel { grid-template-columns: 1.05fr 0.95fr; padding: 34px; }
    .feature-panel.reverse .feature-media { order: -1; }
    .privacy-boundary-section .privacy-grid { grid-template-columns: 1.1fr 0.9fr; }
    .submit-chain-section .submit-grid { grid-template-columns: 0.95fr 1.05fr; }
    .developer-center-section .developer-grid { grid-template-columns: 0.95fr 1.05fr; }
    .process-steps { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .risk-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .article-layout { grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; }
    .footer-grid { grid-template-columns: 1.3fr .7fr .7fr; }
    .download-steps { grid-template-columns: repeat(4, minmax(0,1fr)); }
}

@media (min-width: 1120px) {
    .site-nav a { padding: 9px 13px; }
    .section { padding: 76px 0; }
}