:root {
        --bg-primary: #0a0612;
        --bg-secondary: #0f0a1a;
        --bg-card: rgba(255, 255, 255, 0.03);
        --bg-card-hover: rgba(255, 255, 255, 0.06);
        --border-subtle: rgba(255, 255, 255, 0.08);
        --border-hover: rgba(168, 85, 247, 0.35);
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --text-muted: #64748b;
        --accent-purple: #a855f7;
        --accent-blue: #3b82f6;
        --accent-cyan: #06b6d4;
        --accent-green: #34d399;
        --accent-red: #f87171;
        --accent-amber: #fbbf24;
        --accent-glow-purple: rgba(168, 85, 247, 0.15);
        --accent-glow-blue: rgba(59, 130, 246, 0.12);
        --accent-glow-cyan: rgba(6, 182, 212, 0.1);
        --gradient-hero: linear-gradient(120deg, #a855f7 0%, #7c3aed 30%, #3b82f6 65%, #06b6d4 100%);
        --gradient-quantum: linear-gradient(135deg, rgba(168, 85, 247, 0.4), rgba(6, 182, 212, 0.3));
        --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        --font-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-sans);
        background-color: var(--bg-primary);
        color: var(--text-primary);
        line-height: 1.7;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: color 0.3s ease; }

    .quantum-bg {
        position: fixed;
        top: 0; left: 0;
        width: 100vw; height: 100vh;
        pointer-events: none;
        z-index: 0;
        overflow: hidden;
    }
    .quantum-bg::before,
    .quantum-bg::after {
        content: '';
        position: absolute;
        border-radius: 50%;
        filter: blur(80px);
        opacity: 0.3;
        animation: quantumFloat 12s ease-in-out infinite alternate;
    }
    .quantum-bg::before {
        width: 500px; height: 500px;
        background: radial-gradient(circle, rgba(168, 85, 247, 0.25), transparent 70%);
        top: -100px; left: -100px;
    }
    .quantum-bg::after {
        width: 600px; height: 600px;
        background: radial-gradient(circle, rgba(6, 182, 212, 0.2), transparent 70%);
        bottom: -150px; right: -150px;
        animation-delay: -6s;
    }
    @keyframes quantumFloat {
        0% { transform: translate(0, 0) scale(1); }
        33% { transform: translate(40px, -30px) scale(1.15); }
        66% { transform: translate(-30px, 20px) scale(0.95); }
        100% { transform: translate(20px, -10px) scale(1.05); }
    }

    header {
        position: fixed;
        top: 16px;
        left: 50%;
        transform: translateX(-50%);
        width: 94%;
        max-width: 1250px;
        background: rgba(10, 6, 18, 0.75);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 50px;
        padding: 10px 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
        transition: all 0.3s ease;
    }
    header.scrolled {
        background: rgba(10, 6, 18, 0.92);
        box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 800;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 36px; height: 36px;
        background: var(--gradient-hero);
        border-radius: 10px;
        display: flex; align-items: center; justify-content: center;
        font-size: 15px; font-weight: 900; color: #fff;
        box-shadow: 0 0 24px rgba(168, 85, 247, 0.5);
        animation: logoGlow 3s ease-in-out infinite alternate;
    }
    @keyframes logoGlow {
        0% { box-shadow: 0 0 16px rgba(168, 85, 247, 0.4); }
        100% { box-shadow: 0 0 32px rgba(6, 182, 212, 0.5); }
    }
    .logo span {
        background: linear-gradient(90deg, #fff 60%, #a855f7);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    nav {
        flex: 1;
        display: flex;
        justify-content: center;
    }
    nav ul {
        display: flex;
        list-style: none;
        gap: 4px;
        font-size: 12.5px;
        color: var(--text-secondary);
        align-items: center;
        flex-wrap: nowrap;
    }
    nav ul li a {
        display: inline-block;
        padding: 6px 10px;
        border-radius: 20px;
        color: var(--text-secondary);
        font-weight: 500;
        transition: all 0.25s ease;
    }
    nav ul li a:hover { color: #fff; background: rgba(168, 85, 247, 0.12); }
    nav ul li a.active {
        color: #fff;
        background: rgba(168, 85, 247, 0.18);
        box-shadow: 0 0 12px rgba(168, 85, 247, 0.2);
    }
    nav ul li a::after {
        content: '';
        position: absolute;
        bottom: 0; left: 50%;
        transform: translateX(-50%);
        width: 0; height: 2px;
        background: var(--gradient-hero);
        border-radius: 2px;
        transition: width 0.3s ease;
    }
    nav ul li a:hover::after,
    nav ul li a.active::after { width: 60%; }
    .lang-select {
        font-size: 13px;
        color: var(--text-secondary);
        cursor: pointer;
        padding: 6px 12px;
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 20px;
        transition: all 0.3s;
        flex-shrink: 0;
    }
    .lang-select:hover { border-color: rgba(168, 85, 247, 0.4); color: #fff; }

    main {
        position: relative;
        z-index: 1;
        max-width: 1200px;
        margin: 0 auto;
        padding: 170px 20px 60px;
    }

    /* 博客英雄区——编辑风格 */
    .blog-hero {
        margin-bottom: 70px;
        text-align: center;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(168, 85, 247, 0.1);
        border: 1px solid rgba(168, 85, 247, 0.3);
        border-radius: 50px;
        padding: 8px 18px;
        font-size: 12px;
        font-weight: 600;
        color: #c084fc;
        margin-bottom: 24px;
    }
    .pulse-dot {
        width: 7px; height: 7px;
        border-radius: 50%;
        background: #a855f7;
        animation: pulseDot 1.5s ease-in-out infinite;
    }
    @keyframes pulseDot {
        0%, 100% { box-shadow: 0 0 0 0 rgba(168,85,247,0.5); }
        50% { box-shadow: 0 0 0 8px rgba(168,85,247,0); }
    }
    .blog-hero h1 {
        font-size: 48px;
        font-weight: 900;
        line-height: 1.2;
        letter-spacing: -1px;
        margin-bottom: 16px;
    }
    .gradient-text {
        background: var(--gradient-hero);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .blog-hero > p {
        font-size: 18px;
        color: var(--text-secondary);
        max-width: 750px;
        margin: 0 auto 30px;
        line-height: 1.8;
    }
    .blog-hero .highlight {
        color: #c084fc;
        font-weight: 600;
    }
    .hero-quote {
        max-width: 680px;
        margin: 0 auto;
        font-family: var(--font-serif);
        font-style: italic;
        font-size: 16px;
        color: #e2e8f0;
        border-left: 3px solid #a855f7;
        padding-left: 20px;
        text-align: left;
        line-height: 1.8;
    }

    .section-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-end;
        margin-bottom: 36px;
        flex-wrap: wrap;
        gap: 16px;
    }
    .section-tag {
        font-size: 12px;
        font-weight: 700;
        color: #06b6d4;
        letter-spacing: 2px;
        text-transform: uppercase;
        margin-bottom: 8px;
        display: block;
    }
    .section-title {
        font-size: 32px;
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.5px;
    }
    .section-title .accent { color: #a855f7; }

    /* 特色文章 */
    .featured-section {
        margin-bottom: 70px;
    }
    .featured-card {
        display: grid;
        grid-template-columns: 1fr 1.2fr;
        gap: 30px;
        background: var(--bg-card);
        border: 1px solid var(--border-subtle);
        border-radius: 24px;
        overflow: hidden;
        transition: all 0.4s;
    }
    .featured-card:hover {
        border-color: var(--border-hover);
        box-shadow: 0 20px 50px rgba(0,0,0,0.4);
    }
    .featured-thumb {
        background: linear-gradient(135deg, rgba(168,85,247,0.15), rgba(6,182,212,0.1));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 80px;
        min-height: 260px;
    }
    .featured-content {
        padding: 32px 32px 28px 0;
    }
    .featured-category {
        font-size: 11px;
        font-weight: 700;
        color: #06b6d4;
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 10px;
        display: block;
    }
    .featured-content h3 {
        font-size: 24px;
        font-weight: 800;
        line-height: 1.4;
        margin-bottom: 12px;
        letter-spacing: -0.3px;
    }
    .featured-content p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin-bottom: 18px;
    }
    .featured-meta {
        display: flex;
        gap: 16px;
        font-size: 12px;
        color: var(--text-muted);
    }
    .featured-meta span {
        display: flex;
        align-items: center;
        gap: 4px;
    }

    /* 文章分类标签 */
    .topics-section {
        margin-bottom: 60px;
    }
    .topic-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .topic-tag {
        background: rgba(255,255,255,0.04);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 50px;
        padding: 8px 18px;
        font-size: 13px;
        font-weight: 600;
        color: #cbd5e1;
        transition: all 0.3s;
        cursor: pointer;
    }
    .topic-tag:hover,
    .topic-tag.active {
        background: rgba(168,85,247,0.12);
        border-color: rgba(168,85,247,0.35);
        color: #c084fc;
    }

    /* 文章网格 */
    .articles-section {
        margin-bottom: 80px;
    }
    .articles-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 22px;
    }
    .article-card {
        background: var(--bg-card);
        border: 1px solid var(--border-subtle);
        border-radius: 18px;
        overflow: hidden;
        transition: all 0.35s;
        cursor: pointer;
        display: flex;
        flex-direction: column;
    }
    .article-card:hover {
        border-color: var(--border-hover);
        transform: translateY(-4px);
        box-shadow: 0 16px 40px rgba(0,0,0,0.35);
    }
    .article-thumb {
        height: 140px;
        background: linear-gradient(135deg, rgba(168,85,247,0.12), rgba(6,182,212,0.08));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 48px;
    }
    .article-body {
        padding: 20px 22px 22px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }
    .article-category {
        font-size: 10px;
        font-weight: 700;
        color: #06b6d4;
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 8px;
    }
    .article-body h3 {
        font-size: 16px;
        font-weight: 700;
        line-height: 1.5;
        margin-bottom: 8px;
    }
    .article-body p {
        font-size: 12px;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 14px;
        flex-grow: 1;
    }
    .article-meta {
        font-size: 11px;
        color: var(--text-muted);
        display: flex;
        gap: 12px;
    }

    /* 量子趋势时间线 */
    .trend-section {
        margin-bottom: 80px;
        background: linear-gradient(135deg, rgba(6,182,212,0.04), rgba(168,85,247,0.04));
        border: 1px solid rgba(6,182,212,0.12);
        border-radius: 24px;
        padding: 44px 40px;
    }
    .trend-list {
        display: flex;
        flex-direction: column;
        gap: 18px;
        margin-top: 28px;
    }
    .trend-item {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        background: rgba(255,255,255,0.02);
        border-radius: 12px;
        padding: 16px;
        transition: all 0.3s;
    }
    .trend-item:hover {
        background: rgba(255,255,255,0.04);
    }
    .trend-icon {
        font-size: 22px;
        flex-shrink: 0;
        margin-top: 2px;
    }
    .trend-item h4 {
        font-size: 14px;
        font-weight: 700;
        margin-bottom: 4px;
    }
    .trend-item p {
        font-size: 12px;
        color: var(--text-secondary);
        line-height: 1.6;
    }
    .trend-date {
        font-size: 11px;
        color: #06b6d4;
        font-weight: 600;
        flex-shrink: 0;
        min-width: 80px;
        text-align: right;
    }

    /* 观点专栏 */
    .opinion-section {
        margin-bottom: 80px;
    }
    .opinion-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 22px;
    }
    .opinion-card {
        background: var(--bg-card);
        border: 1px solid var(--border-subtle);
        border-radius: 18px;
        padding: 26px 24px;
        transition: all 0.35s;
    }
    .opinion-card:hover {
        border-color: var(--border-hover);
        transform: translateY(-3px);
    }
    .author-info {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 14px;
    }
    .author-avatar {
        width: 40px; height: 40px;
        border-radius: 50%;
        background: linear-gradient(135deg, #334155, #1e293b);
        border: 2px solid rgba(168,85,247,0.3);
        display: flex; align-items: center; justify-content: center;
        font-weight: 700;
        font-size: 14px;
        color: #c084fc;
    }
    .author-name {
        font-size: 14px;
        font-weight: 700;
    }
    .author-title {
        font-size: 11px;
        color: var(--text-muted);
    }
    .opinion-card blockquote {
        font-family: var(--font-serif);
        font-size: 15px;
        font-style: italic;
        color: #e2e8f0;
        line-height: 1.8;
        margin-bottom: 14px;
        border-left: 2px solid rgba(168,85,247,0.4);
        padding-left: 14px;
    }
    .opinion-card .read-more {
        font-size: 12px;
        color: #c084fc;
        font-weight: 600;
    }

    /* 订阅区 */
    .newsletter-section {
        background: linear-gradient(135deg, rgba(168,85,247,0.08), rgba(6,182,212,0.06));
        border: 1px solid rgba(168,85,247,0.25);
        border-radius: 24px;
        padding: 44px 36px;
        text-align: center;
        margin-bottom: 60px;
    }
    .newsletter-section h2 {
        font-size: 28px;
        font-weight: 800;
        margin-bottom: 12px;
    }
    .newsletter-section p {
        font-size: 14px;
        color: var(--text-secondary);
        max-width: 500px;
        margin: 0 auto 24px;
    }
    .newsletter-form {
        display: flex;
        max-width: 480px;
        margin: 0 auto;
        gap: 10px;
    }
    .newsletter-form input {
        flex: 1;
        background: rgba(255,255,255,0.06);
        border: 1px solid rgba(255,255,255,0.12);
        border-radius: 50px;
        padding: 14px 20px;
        font-size: 14px;
        color: #fff;
        outline: none;
        font-family: inherit;
        transition: border-color 0.3s;
    }
    .newsletter-form input:focus {
        border-color: rgba(168,85,247,0.5);
    }
    .newsletter-form input::placeholder {
        color: var(--text-muted);
    }
    .newsletter-form button {
        background: var(--gradient-hero);
        border: none;
        border-radius: 50px;
        padding: 14px 28px;
        font-size: 14px;
        font-weight: 700;
        color: #fff;
        cursor: pointer;
        transition: all 0.3s;
        white-space: nowrap;
    }
    .newsletter-form button:hover {
        box-shadow: 0 10px 30px rgba(168,85,247,0.5);
        transform: translateY(-2px);
    }

    footer {
        border-top: 1px solid var(--border-subtle);
        padding: 60px 20px 30px;
        background-color: var(--bg-primary);
        position: relative;
        z-index: 1;
    }
    .footer-container { max-width: 1200px; margin: 0 auto; }
    .footer-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
        margin-bottom: 50px;
    }
    .footer-col h4 {
        font-size: 14px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 18px;
    }
    .footer-col ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-col ul li,
    .footer-col ul li a {
        font-size: 13px;
        color: var(--text-secondary);
        transition: color 0.25s;
    }
    .footer-col ul li a:hover { color: #c084fc; }
    .footer-bottom {
        text-align: center;
        font-size: 12px;
        color: var(--text-muted);
        padding-top: 24px;
        border-top: 1px solid var(--border-subtle);
    }
    .footer-bottom .footer-links {
        display: flex;
        justify-content: center;
        gap: 20px;
        font-size: 11px;
        margin-top: 6px;
    }
    .footer-bottom .footer-links a { color: var(--text-muted); }
    .footer-bottom .footer-links a:hover { color: #c084fc; }

    @media (max-width: 1100px) {
        header { width: 96%; padding: 10px 16px; }
        nav ul { gap: 2px; font-size: 11px; }
        nav ul li a { padding: 5px 7px; }
        .articles-grid { grid-template-columns: 1fr 1fr; }
        .featured-card { grid-template-columns: 1fr; }
        .featured-content { padding: 24px; }
        .opinion-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
        main { padding-top: 130px; }
        .blog-hero h1 { font-size: 34px; }
        .articles-grid { grid-template-columns: 1fr; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        .section-title { font-size: 26px; }
        .newsletter-form { flex-direction: column; }
        .newsletter-form button { width: 100%; }
    }