:root {
    --okx-black: #000000;
    --okx-cyan: #00FFD1;
    --okx-gray: #111111;
    --okx-card-bg: rgba(255, 255, 255, 0.03);
    --okx-border: rgba(255, 255, 255, 0.08);
    --font-mono: 'JetBrains Mono', monospace;
}

body {
    background: var(--okx-black);
    color: #fff;
    scroll-behavior: smooth;
    margin: 0;
}

.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(0, 255, 209, 0.08), transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.03), transparent 40%);
    pointer-events: none;
    z-index: -1;
}

.container-okx {
    padding: 0 32px 100px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 导航 */
.sub-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(15px);
    padding: 20px 0;
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--okx-border);
}

.sub-nav-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.sub-nav-status span {
    color: var(--okx-cyan);
    margin-right: 4px;
}

.btn-back {
    padding: 10px 24px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
    text-decoration: none;
    transition: 0.3s;
}
.btn-back span {
    margin-left: 6px;
}

.btn-back:hover { background: rgba(255,255,255,0.1); }

/* Hero Section */
.hero-header { padding: 80px 0 60px; }
.section-label {
    color: var(--okx-cyan);
    font-family: var(--font-mono);
    font-weight: 800;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
}

.hero-title-v2 {
    font-size: clamp(3rem, 10vw, 6rem);
    line-height: 0.9;
    font-weight: 900;
    letter-spacing: -5px;
    margin: 20px 0;
}

.hero-underline {
    height: 1px;
    background: linear-gradient(90deg, var(--okx-cyan), transparent);
    width: 300px;
    margin: 24px 0;
}

.hero-desc-v2 {
    font-size: 1.4rem;
    max-width: 750px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
}

.hero-actions { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.btn-register {
    background: #fff;
    color: #000;
    padding: 18px 48px;
    font-weight: 900;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: 0.3s;
    text-decoration: none;
    border: none;
}

.btn-register:hover { background: var(--okx-cyan); transform: translateX(10px); }
.reward-info { font-family: var(--font-mono); font-size: 0.8rem; color: var(--okx-cyan); }

/* 板块通用 */
.content-section { margin-top: 90px; padding: 30px 0; }
.section-title-v2 { font-size: 3rem; margin-bottom: 40px; font-weight: 800; }

/* 1. 里程碑时间轴 */
.timeline-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.timeline-node {
    padding: 30px;
    background: var(--okx-card-bg);
    border: 1px solid var(--okx-border);
    position: relative;
}

.timeline-year {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--okx-cyan);
    margin-bottom: 10px;
}

.timeline-event { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.6; }

/* 2. Web3 架构金字塔 */
.stack-pyramid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 40px;
}

.stack-layer {
    padding: 30px;
    background: var(--okx-card-bg);
    border: 1px solid var(--okx-border);
    transition: 0.3s;
}

.stack-layer:hover { border-color: var(--okx-cyan); background: rgba(0, 255, 209, 0.03); }
.layer-id { font-family: var(--font-mono); font-size: 0.75rem; color: var(--okx-cyan); margin-bottom: 8px; display: block; }
.layer-title { font-size: 1.2rem; font-weight: 800; margin-bottom: 8px; }
.layer-desc { font-size: 0.85rem; color: rgba(255,255,255,0.5); }

/* 3. Gas 费模拟器 */
.gas-visualizer {
    background: var(--okx-card-bg);
    border: 1px solid var(--okx-border);
    padding: 40px;
    border-radius: 4px;
    margin-top: 40px;
}

.gas-meter-track {
    height: 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 6px;
    margin: 30px 0;
    position: relative;
    overflow: hidden;
}

.gas-meter-fill {
    height: 100%;
    width: 65%;
    background: linear-gradient(90deg, var(--okx-cyan), #a855f7);
    box-shadow: 0 0 20px var(--okx-cyan);
}

.gas-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    text-align: center;
}

.gas-val { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 800; color: var(--okx-cyan); }
.gas-label { font-size: 0.75rem; color: rgba(255,255,255,0.4); text-transform: uppercase; margin-top: 8px; }

/* 4. 安全入场清单 */
.safety-checklist {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 40px;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 24px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--okx-border);
    cursor: pointer;
    transition: 0.2s;
}

.check-item:hover { border-color: var(--okx-cyan); }
.checkbox-ui {
    width: 20px;
    height: 20px;
    border: 2px solid var(--okx-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.check-item.active .checkbox-ui { background: var(--okx-cyan); border-color: var(--okx-cyan); }
.check-text { font-size: 0.9rem; font-weight: 600; }

/* 原有组件样式补完 */
.product-matrix {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--okx-border);
    border: 1px solid var(--okx-border);
}

.matrix-item { background: var(--okx-black); padding: 48px; transition: 0.3s; }
.matrix-item:hover { background: rgba(0, 255, 209, 0.04); }
.matrix-icon { color: var(--okx-cyan); margin-bottom: 24px; }
.matrix-desc { color: rgba(255,255,255,0.5); font-size: 0.9rem; margin-top: 12px; line-height: 1.6; }

.token-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
    margin-top: 40px;
}

.token-card {
    padding: 24px 12px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
    background: rgba(255,255,255,0.02);
    transition: 0.2s;
}

.token-card:hover { border-color: var(--okx-cyan); transform: translateY(-5px); }
.token-icon { width: 32px; height: 32px; margin-bottom: 12px; border-radius: 50%; }
.token-name { font-weight: 800; font-family: var(--font-mono); font-size: 0.9rem; }
.token-fullname { font-size: 0.65rem; color: rgba(255,255,255,0.4); margin-top: 4px; }

.safety-grid-v2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.safety-card-v2 { padding: 48px; background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 100%); border: 1px solid var(--okx-border); }
.safety-tag { font-size: 0.7rem; color: var(--okx-cyan); border: 1px solid var(--okx-cyan); padding: 2px 8px; margin-bottom: 15px; display: inline-block; font-family: var(--font-mono); }

.compare-wrapper { background: var(--okx-card-bg); border: 1px solid var(--okx-border); overflow-x: auto; margin-top: 40px; }
.compare-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 0.85rem; min-width: 800px; }
.compare-table th, .compare-table td { padding: 24px; border-bottom: 1px solid var(--okx-border); text-align: left; }
.compare-table th { color: var(--okx-cyan); background: rgba(255,255,255,0.02); }
.highlight-cyan { color: var(--okx-cyan); font-weight: 800; }

.faq-grid-v2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.faq-item-v2 { background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.05); padding: 30px; transition: 0.3s; }
.faq-item-v2:hover { background: rgba(255,255,255,0.04); border-color: var(--okx-cyan); }
.faq-q { font-size: 1rem; font-weight: 800; margin-bottom: 12px; color: var(--okx-cyan); }
.faq-a { color: rgba(255,255,255,0.5); font-size: 0.85rem; line-height: 1.7; }

.footer-v3 { margin-top: 140px; text-align: center; padding-bottom: 80px; }
.footer-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--okx-cyan), transparent); margin-bottom: 60px; }
.footer-title { font-size: clamp(2rem, 6vw, 4rem); font-weight: 900; margin-bottom: 24px; }
.footer-desc { color: rgba(255,255,255,0.5); font-size: 1.2rem; margin-bottom: 40px; }
.footer-copyright { margin-top: 100px; font-family: var(--font-mono); font-size: 0.7rem; opacity: 0.3; }

@media (max-width: 1024px) {
    .product-matrix { grid-template-columns: repeat(2, 1fr); }
    .safety-grid-v2, .faq-grid-v2, .safety-checklist { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .product-matrix { grid-template-columns: 1fr; }
    .btn-back span { display: none; }
    .btn-back { padding: 6px 12px; }
}