:root {
    --cbx-bg-primary: #0f172a;
    --cbx-bg-secondary: #111827;
    --cbx-accent: #3b82f6;
    --cbx-highlight: #06b6d4;
    --cbx-text: #e5e7eb;
    --cbx-text-muted: #9ca3af;
    --cbx-border: rgba(59, 130, 246, 0.2);
    --cbx-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --cbx-radius: 12px;
    --cbx-radius-lg: 20px;
    --cbx-transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--cbx-bg-primary);
    color: var(--cbx-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

.cbx-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.cbx-section {
    padding: 80px 0;
}

.cbx-section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--cbx-text), var(--cbx-highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cbx-section-desc {
    text-align: center;
    color: var(--cbx-text-muted);
    margin-bottom: 48px;
    font-size: 1.05rem;
}

.cbx-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--cbx-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--cbx-transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.cbx-btn-primary {
    background: linear-gradient(135deg, var(--cbx-accent), var(--cbx-highlight));
    color: #fff;
    border-color: transparent;
}

.cbx-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
}

.cbx-btn-outline {
    background: transparent;
    border-color: var(--cbx-accent);
    color: var(--cbx-accent);
}

.cbx-btn-outline:hover {
    background: rgba(59, 130, 246, 0.15);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.cbx-btn-sm {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.cbx-btn-glow:hover {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.6), 0 0 60px rgba(6, 182, 212, 0.3);
}

.cbx-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--cbx-transition);
    background: transparent;
}

.cbx-header.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.cbx-header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cbx-logo img {
    height: 36px;
    width: auto;
}

.cbx-nav {
    display: flex;
    gap: 32px;
}

.cbx-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--cbx-text-muted);
    transition: color var(--cbx-transition);
}

.cbx-nav a:hover {
    color: var(--cbx-accent);
}

.cbx-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.cbx-nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--cbx-text);
}

.cbx-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 24px 80px;
}

.cbx-hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(59, 130, 246, 0.15), transparent 50%),
                radial-gradient(ellipse 60% 40% at 80% 80%, rgba(6, 182, 212, 0.1), transparent 40%);
    pointer-events: none;
}

.cbx-hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.cbx-hero-text h1 {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--cbx-text);
}

.cbx-hero-sub {
    font-size: 1.2rem;
    color: var(--cbx-text-muted);
    margin-bottom: 32px;
    max-width: 480px;
}

.cbx-hero-actions {
    display: flex;
    gap: 16px;
}

.cbx-hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cbx-hero-phone {
    width: 280px;
    position: relative;
    z-index: 2;
}

.cbx-hero-phone img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 16px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
}

.cbx-hero-chart {
    position: absolute;
    right: -40px;
    width: 200px;
    opacity: 0.9;
}

.cbx-hero-chart img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 12px;
}

.cbx-platform {
    background: var(--cbx-bg-secondary);
}

.cbx-platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.cbx-platform-card {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius-lg);
    padding: 32px;
    transition: all var(--cbx-transition);
}

.cbx-platform-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--cbx-shadow);
    border-color: rgba(59, 130, 246, 0.4);
}

.cbx-platform-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cbx-platform-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--cbx-text);
}

.cbx-platform-card p {
    color: var(--cbx-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.cbx-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.cbx-feature-card {
    background: var(--cbx-bg-secondary);
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius-lg);
    padding: 32px;
    transition: all var(--cbx-transition);
}

.cbx-feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    border-color: var(--cbx-highlight);
}

.cbx-feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cbx-feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.cbx-feature-card p {
    color: var(--cbx-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.cbx-assets {
    background: var(--cbx-bg-secondary);
}

.cbx-assets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.cbx-asset-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: rgba(17, 24, 39, 0.6);
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius);
    transition: all var(--cbx-transition);
}

.cbx-asset-item:hover {
    transform: scale(1.05);
    border-color: var(--cbx-accent);
}

.cbx-asset-item img {
    width: 48px;
    height: 48px;
}

.cbx-asset-item span {
    font-weight: 600;
    font-size: 1rem;
}

.cbx-download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.cbx-download-card {
    background: var(--cbx-bg-secondary);
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--cbx-transition);
}

.cbx-download-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--cbx-accent);
}

.cbx-download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.cbx-download-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.cbx-download-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.cbx-download-card p {
    color: var(--cbx-text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.6;
}

.cbx-gallery {
    background: var(--cbx-bg-secondary);
}

.cbx-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.cbx-gallery-item {
    position: relative;
    border-radius: var(--cbx-radius);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--cbx-border);
    transition: all var(--cbx-transition);
}

.cbx-gallery-item:hover {
    transform: scale(1.03);
    border-color: var(--cbx-accent);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
}

.cbx-gallery-item:nth-child(1) { grid-column: span 2; }
.cbx-gallery-item:nth-child(2) { grid-row: span 2; }
.cbx-gallery-item:nth-child(4) { grid-column: span 2; }

.cbx-gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--cbx-transition);
}

.cbx-gallery-item:hover img {
    transform: scale(1.05);
}

.cbx-gallery-item span {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    font-size: 0.9rem;
}

.cbx-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--cbx-transition);
}

.cbx-modal.active {
    opacity: 1;
    visibility: visible;
}

.cbx-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
}

.cbx-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.cbx-modal-close {
    position: absolute;
    top: -48px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.cbx-modal-img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--cbx-radius);
}

.cbx-modal-caption {
    text-align: center;
    margin-top: 12px;
    color: var(--cbx-text-muted);
}

.cbx-security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.cbx-security-card {
    background: var(--cbx-bg-secondary);
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--cbx-transition);
}

.cbx-security-card:hover {
    transform: translateY(-4px);
    border-color: var(--cbx-highlight);
}

.cbx-security-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.cbx-security-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.cbx-security-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.cbx-security-card p {
    color: var(--cbx-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.cbx-flow {
    background: var(--cbx-bg-secondary);
}

.cbx-flow-timeline {
    max-width: 700px;
    margin: 0 auto;
}

.cbx-flow-item {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    position: relative;
}

.cbx-flow-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 23px;
    top: 56px;
    bottom: -32px;
    width: 2px;
    background: linear-gradient(to bottom, var(--cbx-accent), var(--cbx-highlight));
    opacity: 0.5;
}

.cbx-flow-dot {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--cbx-accent), var(--cbx-highlight));
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
}

.cbx-flow-content h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.cbx-flow-content p {
    color: var(--cbx-text-muted);
    font-size: 0.95rem;
}

.cbx-faq-term {
    max-width: 800px;
    margin: 0 auto 24px;
    padding: 16px 20px;
    background: rgba(17, 24, 39, 0.6);
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius);
}

.cbx-faq-term-desc {
    font-size: 0.9rem;
    color: var(--cbx-text-muted);
    line-height: 1.8;
}

.cbx-faq-term-desc ruby {
    font-size: 0.85em;
}

.cbx-faq-term-desc rt {
    font-size: 0.7em;
    opacity: 0.9;
}

.cbx-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.cbx-faq-toggle small {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--cbx-text-muted);
    margin-top: 4px;
}

.cbx-faq-item {
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius);
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--cbx-bg-secondary);
}

.cbx-faq-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--cbx-text);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: background var(--cbx-transition);
}

.cbx-faq-toggle:hover {
    background: rgba(59, 130, 246, 0.1);
}

.cbx-faq-icon {
    font-size: 1.5rem;
    color: var(--cbx-accent);
    transition: transform var(--cbx-transition);
}

.cbx-faq-item.active .cbx-faq-icon {
    transform: rotate(45deg);
}

.cbx-faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.cbx-faq-item.active .cbx-faq-content {
    max-height: 300px;
}

.cbx-faq-content p {
    padding: 0 24px 20px;
    color: var(--cbx-text-muted);
    line-height: 1.7;
    font-size: 0.95rem;
}

.cbx-cta-banner {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(6, 182, 212, 0.2));
    border: 1px solid var(--cbx-border);
    border-radius: var(--cbx-radius-lg);
    padding: 60px 48px;
    text-align: center;
}

.cbx-cta-banner h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.cbx-cta-banner p {
    color: var(--cbx-text-muted);
    margin-bottom: 28px;
}

.cbx-footer {
    background: var(--cbx-bg-secondary);
    padding: 60px 0 24px;
    border-top: 1px solid var(--cbx-border);
}

.cbx-footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 48px;
}

.cbx-footer-col h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--cbx-text);
}

.cbx-footer-col p {
    color: var(--cbx-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.cbx-footer-col ul li {
    margin-bottom: 10px;
}

.cbx-footer-col a {
    color: var(--cbx-text-muted);
    font-size: 0.9rem;
    transition: color var(--cbx-transition);
}

.cbx-footer-col a:hover {
    color: var(--cbx-accent);
}

.cbx-footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--cbx-border);
    text-align: center;
}

.cbx-footer-bottom p {
    color: var(--cbx-text-muted);
    font-size: 0.9rem;
}

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--cbx-accent), var(--cbx-highlight));
    color: #fff;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: bold;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--cbx-transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
}

.cbx-fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.cbx-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .cbx-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .cbx-hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .cbx-hero-actions {
        justify-content: center;
    }

    .cbx-hero-visual {
        order: -1;
    }

    .cbx-platform-grid,
    .cbx-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cbx-assets-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .cbx-security-grid {
        grid-template-columns: 1fr;
    }

    .cbx-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cbx-header-inner {
        position: relative;
    }

    .cbx-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--cbx-bg-secondary);
        padding: 24px;
        gap: 16px;
        margin-top: 16px;
        border-radius: var(--cbx-radius);
    }

    .cbx-nav.active {
        display: flex;
    }

    .cbx-nav-toggle {
        display: flex;
    }

    .cbx-hero-text h1 {
        font-size: 2rem;
    }

    .cbx-platform-grid,
    .cbx-features-grid,
    .cbx-assets-grid,
    .cbx-download-grid {
        grid-template-columns: 1fr;
    }

    .cbx-gallery-grid {
        grid-template-columns: 1fr;
    }

    .cbx-gallery-item:nth-child(1),
    .cbx-gallery-item:nth-child(2),
    .cbx-gallery-item:nth-child(4) {
        grid-column: auto;
        grid-row: auto;
    }

    .cbx-footer-grid {
        grid-template-columns: 1fr;
    }
}