:root {
    --sky: #0EA5E9;
    --sky-dark: #0284C7;
    --sky-light: #38BDF8;
    --amber: #F59E0B;
    --amber-dark: #D97706;
    --amber-light: #FBBF24;
    --ink: #0C4A6E;
    --muted: #64748B;
    --white: #FFFFFF;
    --surface: #F0F9FF;
    --border: #E0F2FE;
    --radius: 10px;
    --transition: 0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    color: var(--ink);
    line-height: 1.65;
    background: var(--white);
    overflow-x: hidden;
}

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

.z74347container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Top banner */
.z74347top-banner {
    background: var(--ink);
    color: #BAE6FD;
    padding: 8px 0;
    font-size: 0.82rem;
    border-bottom: 2px solid var(--amber);
}

.z74347top-banner .z74347container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.z74347language-selector a {
    color: #BAE6FD;
    text-decoration: none;
    margin-left: 12px;
    font-size: 0.78rem;
}

.z74347language-selector a.z74347active { color: var(--amber-light); font-weight: 600; }

/* Header */
.z74347main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(14, 165, 233, 0.08);
}

.z74347header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
    gap: 16px;
    position: relative;
}

.z74347logo a {
    text-decoration: none;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--sky-dark);
    letter-spacing: -0.01em;
}

.z74347menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 1.2rem;
    color: var(--sky);
    cursor: pointer;
}

.z74347main-navigation ul {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 4px;
}

.z74347main-navigation a {
    display: block;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: 6px;
    border: 1px solid transparent;
    transition: var(--transition);
}

.z74347main-navigation a:hover,
.z74347main-navigation li.z74347this a {
    color: var(--sky-dark);
    background: var(--surface);
    border-color: var(--border);
}

/* Intro */
.z74347intro-section {
    padding: 56px 0 40px;
    background: linear-gradient(180deg, var(--surface) 0%, var(--white) 100%);
    border-bottom: 1px solid var(--border);
}

.z74347intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.z74347intro-text h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 12px;
}

.z74347highlight { color: var(--amber); }

.z74347intro-subtitle { color: var(--muted); margin-bottom: 12px; font-size: 1rem; }

.z74347intro-description { color: var(--muted); font-size: 0.92rem; margin-bottom: 16px; }

.z74347intro-tip {
    font-size: 0.88rem;
    color: var(--muted);
    padding: 14px;
    background: var(--white);
    border: 1px solid var(--border);
    border-left: 3px solid var(--amber);
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.z74347intro-buttons { display: flex; flex-wrap: wrap; gap: 12px; }

.z74347btn {
    display: inline-block;
    padding: 11px 22px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid transparent;
    transition: var(--transition);
}

.z74347btn-primary { background: var(--amber); color: var(--white); border-color: var(--amber-dark); }

.z74347btn-primary:hover { background: var(--amber-dark); }

.z74347btn-secondary { background: var(--white); color: var(--sky-dark); border-color: var(--sky); }

.z74347btn-secondary:hover { background: var(--surface); }

.z74347platform-image {
    max-width: 300px;
    margin: 0 auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 16px 40px rgba(14, 165, 233, 0.15);
}

.z74347trading-ticker {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.z74347ticker-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    font-size: 0.82rem;
}

.z74347currency { display: block; font-weight: 700; color: var(--ink); margin-bottom: 4px; }

.z74347price { display: block; color: var(--muted); }

.z74347change { font-weight: 600; }

.z74347positive { color: #16A34A; }

.z74347negative { color: #DC2626; }

/* Section headers */
.z74347section-header { text-align: center; margin-bottom: 36px; }

.z74347section-header h2 { font-size: clamp(1.35rem, 3vw, 1.85rem); font-weight: 700; margin-bottom: 8px; }

.z74347section-header p { color: var(--muted); font-size: 0.92rem; }

.z74347section-header.dark h2 { color: var(--white); }

.z74347section-header.dark p { color: rgba(255,255,255,0.8); }

/* Download */
.z74347download-section { padding: 64px 0; background: var(--white); }

.z74347download-platforms {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.z74347platform-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    position: relative;
    transition: var(--transition);
    min-width: 0;
    overflow: hidden;
}

.z74347platform-card:hover { border-color: var(--sky-light); box-shadow: 0 8px 24px rgba(14, 165, 233, 0.1); }

.z74347platform-icon {
    width: 48px;
    height: 48px;
    background: var(--sky);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    margin: 0 auto 14px;
}

.z74347platform-card h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--ink); }

.z74347platform-card > p { font-size: 0.85rem; color: var(--muted); margin-bottom: 14px; }

.z74347platform-features { list-style: none; text-align: left; margin-bottom: 16px; }

.z74347platform-features li { font-size: 0.82rem; color: var(--muted); padding: 4px 0; }

.z74347btn-download { background: var(--sky); color: var(--white); border-color: var(--sky-dark); width: 100%; text-align: center; }

.z74347version-tag {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.75rem;
    color: var(--muted);
    padding: 2px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.z74347download-info {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.z74347info-item { display: flex; gap: 10px; align-items: flex-start; font-size: 0.88rem; color: var(--muted); }

.z74347info-item span:first-child { color: var(--amber); font-weight: 700; }

/* Features */
.z74347features-section { padding: 64px 0; }

.z74347features-section:not(.z74347dark-bg) { background: var(--surface); }

.z74347dark-bg { background: linear-gradient(135deg, var(--sky-dark) 0%, var(--ink) 100%); color: var(--white); }

.z74347features-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.z74347feature-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    transition: var(--transition);
}

.z74347dark-bg .z74347feature-box {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    color: var(--white);
}

.z74347feature-box:hover { border-color: var(--amber-light); }

.z74347feature-box .z74347feature-icon { color: var(--amber); font-size: 1rem; margin-bottom: 10px; }

.z74347feature-box h3 { font-size: 1rem; margin-bottom: 8px; }

.z74347feature-box p { font-size: 0.85rem; color: var(--muted); }

.z74347dark-bg .z74347feature-box p { color: rgba(255,255,255,0.75); }

.z74347stats-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.z74347stat-item { text-align: center; }

.z74347stat-value { display: block; font-size: 1.75rem; font-weight: 800; color: var(--amber-light); }

.z74347stat-label { font-size: 0.82rem; opacity: 0.85; }

/* Market */
.z74347market-section { padding: 64px 0; background: var(--white); }

.z74347market-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 20px; flex-wrap: wrap; }

.z74347tab-btn {
    padding: 8px 18px;
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--muted);
    transition: var(--transition);
}

.z74347tab-btn.z74347active,
.z74347tab-btn:hover { background: var(--sky); color: var(--white); border-color: var(--sky); }

.z74347market-table-container { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }

.z74347market-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 600px; }

.z74347market-table th {
    background: var(--surface);
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--ink);
    border-bottom: 1px solid var(--border);
}

.z74347market-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); color: var(--muted); }

.z74347coin-info { display: flex; align-items: center; gap: 10px; }

.z74347coin-icon { width: 28px; height: 28px; border-radius: 50%; background: var(--amber-light); }

.z74347coin-icon.btc { background: #F7931A; }
.z74347coin-icon.eth { background: #627EEA; }
.z74347coin-icon.sol { background: #9945FF; }

.z74347name { display: block; font-weight: 600; color: var(--ink); font-size: 0.88rem; }

.z74347symbol { font-size: 0.75rem; color: var(--muted); }

.z74347market-cta { text-align: center; margin-top: 24px; }

.z74347market-cta p { color: var(--muted); margin-bottom: 12px; font-size: 0.9rem; }

.z74347btn-outline { background: transparent; color: var(--sky-dark); border-color: var(--sky); }

/* Guide */
.z74347guide-section { padding: 64px 0; background: var(--surface); }

.z74347guide-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.z74347step-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.z74347step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--amber);
    color: var(--white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
}

.z74347step-content h3 { font-size: 0.95rem; margin-bottom: 6px; color: var(--ink); }

.z74347step-content p { font-size: 0.82rem; color: var(--muted); }

.z74347guide-resources { margin-top: 32px; text-align: center; }

.z74347guide-resources h3 { margin-bottom: 16px; color: var(--ink); }

.z74347resources-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

.z74347resource-card {
    padding: 12px 20px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--ink);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.z74347resource-card:hover { border-color: var(--sky); color: var(--sky-dark); }

/* Community */
.z74347community-section { padding: 64px 0; background: linear-gradient(135deg, var(--ink) 0%, var(--sky-dark) 100%); color: var(--white); }

.z74347community-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: center;
}

.z74347community-text p { font-size: 0.92rem; opacity: 0.9; margin-bottom: 12px; }

.z74347social-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }

.z74347social-btn {
    padding: 8px 16px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    color: var(--white);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

.z74347social-btn:hover { background: var(--amber); border-color: var(--amber); }

.z74347app-qrcode { text-align: center; }

.z74347qrcode-image {
    width: 120px;
    height: 120px;
    background: var(--white);
    border-radius: var(--radius);
    margin: 0 auto 10px;
    border: 1px solid var(--border);
}

.z74347app-qrcode p { font-size: 0.82rem; opacity: 0.85; }

/* CTA */
.z74347cta-section {
    padding: 48px 0;
    background: var(--amber);
    text-align: center;
    color: var(--white);
}

.z74347cta-content h2 { font-size: 1.5rem; margin-bottom: 10px; }

.z74347cta-content p { opacity: 0.95; margin-bottom: 16px; font-size: 0.92rem; max-width: 560px; margin-left: auto; margin-right: auto; }

.z74347btn-cta { background: var(--white); color: var(--amber-dark); border-color: var(--white); }

/* Articles home */
.z74347article-home-section { padding: 64px 0; background: var(--surface); }

.z74347article-home-grid {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
}

.z74347article-home-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.z74347article-home-item:hover { border-color: var(--sky-light); }

.z74347article-home-thumb { display: block; aspect-ratio: 16/10; overflow: hidden; }

.z74347article-home-thumb img { width: 100%; height: 100%; object-fit: cover; }

.z74347article-home-item h3 { font-size: 0.85rem; padding: 10px 12px; line-height: 1.45; }

.z74347article-home-item h3 a { color: var(--ink); text-decoration: none; }

/* Links & footer */
.z74347links-section { padding: 32px 0; border-top: 1px solid var(--border); }

.z74347related-sites { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; }

.z74347related-sites a {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
    text-decoration: none;
    font-size: 0.85rem;
}

.z74347ad-section { text-align: center; padding: 12px 0; }

.z74347site-footer {
    background: var(--ink);
    color: #BAE6FD;
    padding: 40px 0 24px;
}

.z74347footer-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    margin-bottom: 28px;
}

.z74347footer-column h3 { font-size: 0.9rem; color: var(--amber-light); margin-bottom: 12px; }

.z74347footer-column ul { list-style: none; }

.z74347footer-column li { margin-bottom: 8px; }

.z74347footer-column a { color: #BAE6FD; text-decoration: none; font-size: 0.85rem; opacity: 0.85; }

.z74347footer-column a:hover { opacity: 1; color: var(--white); }

.z74347footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.85rem; }

.z74347disclaimer { opacity: 0.7; margin-top: 6px; font-size: 0.8rem; }

/* Inner pages */
.z74347page-wrap { background: var(--surface); min-height: 100vh; }

.z74347layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    padding: 28px 0 48px;
}

.z74347panel {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    min-width: 0;
    overflow: hidden;
}

.z74347list-grid { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 16px; }

.z74347list-item { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--white); }

.z74347list-thumb img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }

.z74347list-content { padding: 12px 14px; }

.z74347list-content h3 { font-size: 0.95rem; margin-bottom: 6px; line-height: 1.45; }

.z74347list-content h3 a { color: var(--ink); text-decoration: none; }

.z74347list-content p { font-size: 0.82rem; color: var(--muted); margin: 0; }

.z74347pages { margin-top: 20px; }

.z74347pages .pagelist { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0; }

.z74347pages .pagelist a,
.z74347pages .pagelist span {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--ink);
    text-decoration: none;
    font-size: 0.85rem;
}

.z74347side-title { font-size: 1rem; color: var(--sky-dark); margin-bottom: 14px; }

.z74347side-list { list-style: none; display: grid; gap: 10px; }

.z74347side-item a { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 10px; align-items: center; text-decoration: none; }

.z74347side-item img { width: 90px; height: 60px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); }

.z74347side-item span { font-size: 0.82rem; color: var(--ink); line-height: 1.4; }

.z74347article-title { font-size: 1.65rem; line-height: 1.35; margin-bottom: 10px; color: var(--ink); }

.z74347meta { font-size: 0.82rem; color: var(--muted); padding-bottom: 12px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }

.z74347article-body { line-height: 1.85; word-break: break-word; font-size: 0.95rem; color: var(--ink); }

.z74347article-body img { max-width: 100%; height: auto; border-radius: 8px; }

.z74347prenext { margin-top: 24px; display: grid; gap: 8px; padding-top: 16px; border-top: 1px solid var(--border); }

.z74347prenext a { color: var(--sky-dark); text-decoration: none; font-size: 0.9rem; }

.z74347related { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); }

.z74347rel-title { font-size: 1rem; color: var(--sky-dark); margin-bottom: 14px; }

.z74347related-list { list-style: none; display: grid; gap: 10px; }

.z74347related-item { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }

.z74347related-item a { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; align-items: center; text-decoration: none; padding: 0; }

.z74347related-item img { width: 120px; height: 80px; object-fit: cover; }

.z74347related-item h4 { font-size: 0.88rem; color: var(--ink); margin-bottom: 4px; font-weight: 600; }

.z74347related-item p { font-size: 0.78rem; color: var(--muted); margin: 0; }

@media (max-width: 1024px) {
    .z74347intro-content { grid-template-columns: 1fr; text-align: center; }
    .z74347intro-tip { text-align: left; }
    .z74347intro-buttons { justify-content: center; }
    .z74347download-platforms,
    .z74347features-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z74347guide-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z74347article-home-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .z74347layout { grid-template-columns: 1fr; }
    .z74347footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
    .z74347menu-toggle { display: block; }
    .z74347main-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        padding: 12px 20px;
        max-height: 70vh;
        overflow-y: auto;
    }
    .z74347main-navigation.active { display: block; }
    .z74347main-header { position: sticky; }
    .z74347header-row { flex-wrap: wrap; }
    .z74347main-navigation ul { flex-direction: column; }
    .z74347main-navigation a { border: 1px solid var(--border); padding: 12px 14px; }
    .z74347trading-ticker { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z74347stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z74347download-platforms,
    .z74347features-grid,
    .z74347guide-steps,
    .z74347download-info,
    .z74347list-grid { grid-template-columns: 1fr; }
    .z74347community-content { grid-template-columns: 1fr; }
    .z74347article-home-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z74347related-item a { grid-template-columns: 90px minmax(0, 1fr); }
    .z74347related-item img { width: 90px; height: 64px; }
}

@media (max-width: 480px) {
    .z74347trading-ticker,
    .z74347article-home-grid { grid-template-columns: 1fr; }
    .z74347footer-grid { grid-template-columns: 1fr; }
}