:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-faint: #F4F9FF;
    --bg: #F6F8FB;
    --panel: #FFFFFF;
    --text: #1E293B;
    --muted: #64748B;
    --line: #E5EAF1;
    --deep: #0F172A;
    --shadow: 0 20px 60px rgba(41, 128, 254, 0.10);
    --radius: 24px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 42%, #F6F8FB 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: #1265D8;
}

main {
    min-height: 70vh;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(229, 234, 241, 0.9);
}

.header-inner {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
    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;
    color: var(--deep);
    font-weight: 800;
    letter-spacing: 0.02em;
}

.logo img,
.footer-logo img {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 12px;
}

.nav-toggle {
    border: 1px solid var(--line);
    background: #fff;
    color: var(--deep);
    border-radius: 999px;
    padding: 9px 15px;
    font-weight: 700;
    cursor: pointer;
}

.site-nav {
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    display: none;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.site-nav.open {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.site-nav a {
    padding: 10px 12px;
    color: var(--muted);
    border-radius: 14px;
    font-weight: 700;
    font-size: 14px;
}

.site-nav a.active,
.site-nav a:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.container,
.web3-dashboard-hero,
.service-index,
.section-inner,
.page-hero,
.page-content,
.cta-section,
.faq-section {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}

.web3-dashboard-hero {
    padding: 54px 0 34px;
    display: grid;
    gap: 24px;
}

.hero-copy {
    background: linear-gradient(135deg, #FFFFFF 0%, #F2F7FF 100%);
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 28px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.hero-copy::after {
    content: "";
    position: absolute;
    right: -70px;
    top: -90px;
    width: 210px;
    height: 210px;
    background: rgba(41, 128, 254, 0.12);
    border-radius: 50%;
}

.eyebrow,
.category-badge,
.service-tag,
.mini-tag {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 7px 11px;
    border-radius: 999px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41, 128, 254, 0.16);
    font-size: 13px;
    font-weight: 800;
}

h1,
h2,
h3 {
    color: var(--deep);
    line-height: 1.18;
    margin: 0 0 14px;
}

h1 {
    font-size: clamp(34px, 8vw, 64px);
    letter-spacing: -0.05em;
}

h2 {
    font-size: clamp(26px, 5vw, 42px);
    letter-spacing: -0.03em;
}

h3 {
    font-size: 20px;
}

p {
    margin: 0 0 14px;
    color: var(--muted);
}

.lead {
    font-size: 17px;
    color: #475569;
    max-width: 720px;
}

.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;
    border: 1px solid var(--primary);
    box-shadow: 0 14px 26px rgba(41, 128, 254, 0.24);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.download-btn:hover {
    color: #fff;
    background: #126FE8;
    transform: translateY(-2px);
    box-shadow: 0 18px 34px rgba(41, 128, 254, 0.28);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 24px;
}

.security-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.security-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.hero-console {
    border-radius: 30px;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: var(--shadow);
    padding: 20px;
    display: grid;
    gap: 16px;
}

.visual-shell {
    background: radial-gradient(circle at 50% 0%, rgba(41, 128, 254, .16), transparent 42%), var(--primary-faint);
    border: 1px solid var(--line);
    border-radius: 28px;
    min-height: 280px;
    display: grid;
    place-items: center;
    padding: 20px;
}

.visual-shell img {
    max-height: 430px;
    object-fit: contain;
    filter: drop-shadow(0 22px 35px rgba(15, 23, 42, 0.12));
}

.status-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.status-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 14px;
}

.status-card strong {
    display: block;
    color: var(--deep);
    margin-bottom: 3px;
}

.status-card span {
    color: var(--muted);
    font-size: 13px;
}

.section {
    padding: 34px 0;
}

.section-muted {
    background: linear-gradient(180deg, rgba(234, 243, 255, 0.42), rgba(246, 248, 251, 0.72));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section-heading {
    display: grid;
    gap: 6px;
    margin-bottom: 20px;
}

.service-index .section-heading,
.section-inner .section-heading {
    margin-bottom: 18px;
}

.service-grid,
.category-grid {
    display: grid;
    gap: 14px;
}

.service-card,
.feature-card,
.risk-card,
.faq-item,
.step-card,
.policy-panel,
.ecosystem-card,
.doc-card,
.notice-card,
.check-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 12px 34px rgba(15, 23, 42, 0.04);
}

.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 3px;
    background: var(--primary);
    border-radius: 0 0 999px 999px;
}

.service-card a,
.feature-card a,
.step-card a,
.risk-card a,
.doc-card a,
.notice-card a,
.check-card a {
    font-weight: 800;
}

.panel-split,
.digital-assets-hub,
.web3-ecosystem-section,
.hardware-wallet-section,
.swap-service-section,
.developer-center-section,
.submit-chain-section {
    display: grid;
    gap: 22px;
    align-items: center;
}

.panel-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.panel-card.soft {
    background: linear-gradient(135deg, #FFFFFF 0%, #F3F8FF 100%);
}

.panel-visual {
    background: var(--primary-faint);
    border: 1px solid var(--line);
    border-radius: 30px;
    padding: 22px;
    min-height: 260px;
    display: grid;
    place-items: center;
}

.panel-visual img {
    max-height: 380px;
    object-fit: contain;
}

.feature-list,
.check-list {
    display: grid;
    gap: 10px;
    margin: 18px 0;
    padding: 0;
    list-style: none;
}

.feature-list li,
.check-list li {
    padding: 12px 13px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    color: #475569;
}

.privacy-boundary-section {
    display: grid;
    gap: 16px;
}

.policy-panel {
    border-left: 4px solid var(--primary);
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.developer-terminal {
    background: #F8FAFC;
    border: 1px solid var(--line);
    border-radius: 24px;
    overflow: hidden;
}

.terminal-bar {
    display: flex;
    gap: 7px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #CBD5E1;
}

.code-block {
    margin: 0;
    padding: 18px;
    overflow: auto;
    color: #334155;
    font: 13px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.process-steps {
    display: grid;
    gap: 14px;
    counter-reset: steps;
}

.step-card {
    position: relative;
    padding-left: 66px;
}

.step-card::before {
    counter-increment: steps;
    content: counter(steps, decimal-leading-zero);
    position: absolute;
    left: 18px;
    top: 20px;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 13px;
}

.risk-grid,
.faq-grid {
    display: grid;
    gap: 14px;
}

.risk-card {
    border-top: 4px solid var(--primary);
}

.risk-card b {
    color: var(--deep);
}

.faq-item h3 {
    margin-bottom: 8px;
}

.cta-section {
    margin-top: 34px;
    margin-bottom: 54px;
    text-align: center;
    padding: 34px 22px;
    border: 1px solid var(--line);
    border-radius: 32px;
    background: linear-gradient(135deg, #FFFFFF 0%, #EAF3FF 100%);
    box-shadow: var(--shadow);
}

.site-footer {
    background: #fff;
    border-top: 1px solid var(--line);
}

.footer-grid {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
    padding: 38px 0 26px;
    display: grid;
    gap: 24px;
}

.footer-grid h2 {
    font-size: 16px;
    margin-bottom: 10px;
}

.footer-grid a {
    display: block;
    color: var(--muted);
    margin: 6px 0;
}

.footer-bottom {
    border-top: 1px solid var(--line);
    padding: 16px;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 13px;
}

.page-hero {
    padding: 48px 0 22px;
}

.page-hero-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #F2F7FF 100%);
    border: 1px solid var(--line);
    border-radius: 32px;
    padding: 28px;
    box-shadow: var(--shadow);
}

.page-content {
    padding: 10px 0 44px;
}

.content-layout {
    display: grid;
    gap: 18px;
}

.article-panel {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 24px;
}

.article-panel h2 {
    font-size: 26px;
    margin-top: 18px;
}

.side-panel {
    display: grid;
    gap: 14px;
}

.summary-list {
    display: grid;
    gap: 12px;
    padding: 0;
    margin: 18px 0;
    list-style: none;
}

.summary-list li {
    display: grid;
    gap: 4px;
    padding: 16px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: var(--primary-faint);
}

.summary-list strong {
    color: var(--deep);
}

.table-like {
    display: grid;
    gap: 10px;
    margin: 18px 0;
}

.table-like div {
    display: grid;
    gap: 4px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
}

.download-page-steps {
    display: grid;
    gap: 14px;
    margin-top: 24px;
}

.notice-card.accent {
    background: linear-gradient(135deg, #FFFFFF 0%, #F2F7FF 100%);
    border-left: 4px solid var(--primary);
}

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

    .web3-dashboard-hero {
        padding-top: 70px;
    }
}

@media (min-width: 880px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 2px;
        padding: 0;
        border: 0;
        box-shadow: none;
        background: transparent;
        flex-wrap: wrap;
    }

    .site-nav a {
        font-size: 13px;
        padding: 8px 10px;
    }

    .web3-dashboard-hero {
        grid-template-columns: minmax(0, 1.02fr) minmax(360px, .98fr);
        align-items: stretch;
    }

    .hero-copy,
    .hero-console,
    .panel-card,
    .article-panel,
    .page-hero-card {
        padding: 34px;
    }

    .service-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .service-card:nth-child(1),
    .service-card:nth-child(7) {
        grid-column: span 2;
    }

    .panel-split,
    .digital-assets-hub,
    .web3-ecosystem-section,
    .hardware-wallet-section,
    .swap-service-section,
    .developer-center-section,
    .submit-chain-section {
        grid-template-columns: minmax(0, 1fr) minmax(340px, .9fr);
    }

    .web3-ecosystem-section,
    .swap-service-section {
        grid-template-columns: minmax(340px, .9fr) minmax(0, 1fr);
    }

    .privacy-boundary-section {
        grid-template-columns: 1.2fr .8fr;
    }

    .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));
    }

    .footer-grid {
        grid-template-columns: 1.4fr repeat(3, 1fr);
    }

    .content-layout {
        grid-template-columns: minmax(0, 1fr) 320px;
        align-items: start;
    }

    .category-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 1120px) {
    .site-nav a {
        font-size: 14px;
        padding: 9px 12px;
    }

    .status-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}