:root {
        --primary: #22d3ee;
        --accent: #fb923c;
        --bg-dark: #0f172a;
        --text-light: #e2e8f0;
        --border-w: 3px;
        --shadow-hard: 8px 8px 0 0 rgba(34, 211, 238, 0.2);
    }

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

    body {
        background-color: var(--bg-dark);
        color: var(--text-light);
        font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        overflow-x: hidden;
    }

    /* 标题手写/圆体感 */
    h1, h2, h3, .hand-font {
        font-family: 'Comic Sans MS', 'Chalkboard SE', 'Marker Felt', 'PingFang SC', sans-serif;
        font-weight: 800;
    }

    /* 几何色块背景装饰 */
    .deco-circle {
        position: absolute;
        width: 180px;
        height: 180px;
        border-radius: 50%;
        background: var(--primary);
        opacity: 0.12;
        z-index: 0;
        pointer-events: none;
    }

    .deco-square {
        position: absolute;
        width: 100px;
        height: 100px;
        background: var(--accent);
        opacity: 0.15;
        z-index: 0;
        transform: rotate(15deg);
        pointer-events: none;
    }

    .deco-triangle {
        position: absolute;
        width: 0;
        height: 0;
        border-left: 50px solid transparent;
        border-right: 50px solid transparent;
        border-bottom: 86px solid var(--primary);
        opacity: 0.1;
        z-index: 0;
        pointer-events: none;
    }

    /* 全直角 */
    .no-round, .card, .btn, .navbar, .tag-panel, .timeline-item {
        border-radius: 0 !important;
    }

    /* 粗边框硬阴影 */
    .hard-box {
        border: var(--border-w) solid var(--primary);
        box-shadow: var(--shadow-hard);
    }

    .hard-box-accent {
        border: var(--border-w) solid var(--accent);
        box-shadow: 8px 8px 0 0 rgba(251, 146, 60, 0.25);
    }

    /* 导航栏 */
    .custom-nav {
        background: rgba(15, 23, 42, 0.9);
        border-bottom: var(--border-w) solid var(--primary);
        transition: all 0.3s ease;
        z-index: 999;
    }

    .custom-nav.scrolled {
        background: rgba(15, 23, 42, 0.95);
        box-shadow: 0 4px 20px rgba(34, 211, 238, 0.3);
    }

    .navbar-brand {
        font-size: 1.6rem;
        font-weight: 900;
        color: var(--primary) !important;
        letter-spacing: 1px;
    }

    .nav-link {
        color: var(--text-light) !important;
        font-weight: 600;
        margin: 0 12px;
        position: relative;
        padding: 8px 0;
        transition: color 0.2s;
    }

    .nav-link:hover {
        color: var(--accent) !important;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 3px;
        background: var(--accent);
        transition: width 0.3s;
    }

    .nav-link:hover::after {
        width: 100%;
    }

    /* Hero 区 */
    .hero-section {
        position: relative;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(rgba(15,23,42,0.6), rgba(15,23,42,0.85)), url('{随机图片}') center/cover no-repeat fixed;
        border-bottom: var(--border-w) solid var(--accent);
    }

    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
        padding: 2rem;
    }

    .hero-title {
        font-size: 4.5rem;
        color: var(--primary);
        text-shadow: 4px 4px 0 rgba(251, 146, 60, 0.6);
        letter-spacing: 4px;
    }

    .hero-sub {
        font-size: 1.5rem;
        margin-top: 20px;
        color: var(--text-light);
        font-weight: 300;
    }

    .hero-btn {
        margin-top: 30px;
        padding: 14px 40px;
        font-size: 1.2rem;
        font-weight: 700;
        background: var(--accent);
        color: var(--bg-dark);
        border: var(--border-w) solid var(--bg-dark);
        box-shadow: 6px 6px 0 0 var(--primary);
        transition: all 0.2s;
        text-decoration: none;
        display: inline-block;
    }

    .hero-btn:hover {
        transform: translate(3px, 3px);
        box-shadow: 3px 3px 0 0 var(--primary);
        color: var(--bg-dark);
    }

    /* 区块通用 */
    .section-block {
        padding: 90px 20px;
        position: relative;
        z-index: 1;
    }

    .section-title {
        font-size: 2.8rem;
        font-weight: 800;
        color: var(--primary);
        margin-bottom: 20px;
        position: relative;
        display: inline-block;
    }

    .section-title::before {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 0;
        width: 60%;
        height: 5px;
        background: var(--accent);
    }

    /* 时间线 - 使用说明 */
    .timeline-wrap {
        position: relative;
        padding: 20px 0;
    }

    .timeline-wrap::before {
        content: '';
        position: absolute;
        left: 20px;
        top: 0;
        bottom: 0;
        width: 4px;
        background: var(--primary);
    }

    .timeline-item {
        position: relative;
        padding-left: 60px;
        padding-bottom: 50px;
        border: none;
    }

    .timeline-item::before {
        content: '';
        position: absolute;
        left: 10px;
        top: 5px;
        width: 24px;
        height: 24px;
        background: var(--accent);
        border: 3px solid var(--bg-dark);
        box-shadow: 0 0 0 3px var(--accent);
    }

    .timeline-step {
        font-size: 1.4rem;
        font-weight: 800;
        color: var(--accent);
    }

    .timeline-text {
        font-size: 1.1rem;
        color: var(--text-light);
        margin-top: 8px;
    }

    /* 标签页切换 - 特色网格 */
    .tab-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 40px;
        border-bottom: 3px solid var(--primary);
        padding-bottom: 10px;
    }

    .tab-btn {
        padding: 10px 28px;
        background: transparent;
        border: 3px solid var(--primary);
        color: var(--primary);
        font-weight: 700;
        cursor: pointer;
        transition: all 0.2s;
    }

    .tab-btn.active, .tab-btn:hover {
        background: var(--primary);
        color: var(--bg-dark);
    }

    .tab-content-panel {
        display: none;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }

    .tab-content-panel.active {
        display: grid;
    }

    .feature-card {
        background: var(--bg-dark);
        border: 3px solid var(--primary);
        padding: 30px 20px;
        text-align: center;
        transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
        cursor: pointer;
    }

    .feature-card:hover {
        transform: scale(1.03);
        border-color: var(--accent);
        box-shadow: 8px 8px 0 0 rgba(251, 146, 60, 0.3);
    }

    .feature-icon {
        font-size: 3rem;
        color: var(--accent);
        margin-bottom: 20px;
    }

    .feature-title {
        font-size: 1.4rem;
        color: var(--primary);
        font-weight: 700;
        margin-bottom: 12px;
    }

    .feature-desc {
        color: var(--text-light);
        font-size: 0.95rem;
        line-height: 1.7;
    }

    /* 长文区 */
    .long-article {
        background: rgba(34, 211, 238, 0.05);
        border-left: 8px solid var(--primary);
        padding: 50px;
        max-width: 1000px;
        margin: 0 auto;
    }

    .long-article h3 {
        color: var(--accent);
        font-size: 2rem;
        margin-bottom: 30px;
    }

    .long-article p {
        font-size: 1.1rem;
        line-height: 2;
        margin-bottom: 25px;
        color: var(--text-light);
    }

    /* FAQ */
    .faq-item {
        background: transparent;
        border: 3px solid var(--accent);
        margin-bottom: 20px;
        padding: 25px 30px;
        box-shadow: 5px 5px 0 0 rgba(251, 146, 60, 0.15);
    }

    .faq-q {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--primary);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .faq-a {
        margin-top: 15px;
        color: var(--text-light);
        font-size: 1rem;
        line-height: 1.8;
        display: none;
    }

    .faq-item.open .faq-a {
        display: block;
    }

    .faq-icon {
        font-size: 1.6rem;
        color: var(--accent);
        transition: transform 0.3s;
    }

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

    /* CTA */
    .cta-section {
        background: linear-gradient(135deg, rgba(34,211,238,0.15), rgba(251,146,60,0.1));
        border-top: 3px solid var(--primary);
        border-bottom: 3px solid var(--accent);
        text-align: center;
        padding: 100px 20px;
    }

    .cta-btn {
        padding: 16px 50px;
        font-size: 1.3rem;
        font-weight: 800;
        background: var(--accent);
        color: var(--bg-dark);
        border: 3px solid var(--bg-dark);
        box-shadow: 8px 8px 0 0 var(--primary);
        transition: all 0.2s;
        text-decoration: none;
        display: inline-block;
        margin-top: 30px;
    }

    .cta-btn:hover {
        transform: translate(4px, 4px);
        box-shadow: 4px 4px 0 0 var(--primary);
        color: var(--bg-dark);
    }

    /* 友情链接 */
    .friends-links {
        background: rgba(15, 23, 42, 0.9);
        border-top: 3px solid var(--primary);
        padding: 50px 20px;
        text-align: center;
    }

    .friends-links h4 {
        color: var(--primary);
        font-size: 1.5rem;
        margin-bottom: 25px;
        font-weight: 700;
    }

    /* 页脚 */
    footer {
        background: #0a0f1c;
        border-top: 3px solid var(--accent);
        padding: 40px 20px;
        text-align: center;
        color: var(--text-light);
    }

    footer a {
        color: var(--primary);
        text-decoration: none;
        font-weight: 600;
    }

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

    /* 移动端适配 */
    @media (max-width: 768px) {
        .hero-title {
            font-size: 2.5rem;
        }
        .hero-sub {
            font-size: 1.1rem;
        }
        .section-title {
            font-size: 2rem;
        }
        .long-article {
            padding: 30px 20px;
        }
        .tab-content-panel {
            grid-template-columns: 1fr;
        }
    }

    /* 卡片装饰 */
    .card-deco {
        position: relative;
    }

    .card-deco::after {
        content: '';
        position: absolute;
        top: -12px;
        right: -12px;
        width: 30px;
        height: 30px;
        background: var(--accent);
        opacity: 0.4;
    }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .about-hero {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(34, 211, 238, 0.15));
            border-bottom: var(--border-w) solid var(--primary);
            position: relative;
            overflow: hidden;
        }
.about-hero .hero-content {
            max-width: 900px;
            margin: 0 auto;
            padding: 80px 20px 60px;
            text-align: center;
        }
.about-hero .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            text-shadow: 3px 3px 0 rgba(0,0,0,0.3);
            letter-spacing: 2px;
            margin-bottom: 20px;
        }
.about-hero .hero-sub {
            font-size: 1.15rem;
            color: var(--text-light);
            opacity: 0.9;
            line-height: 1.8;
            max-width: 700px;
            margin: 0 auto;
        }
.about-section {
            padding: 70px 0;
            position: relative;
        }
.about-section:nth-child(even) {
            background: rgba(34, 211, 238, 0.04);
        }
.section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: var(--border-w);
            background: var(--accent);
            border-radius: 2px;
        }
.about-text {
            color: var(--text-light);
            font-size: 1.02rem;
            line-height: 1.9;
            opacity: 0.92;
            margin-bottom: 20px;
        }
.about-text strong {
            color: var(--primary);
            font-weight: 700;
        }
.about-text .highlight {
            color: var(--accent);
            font-weight: 600;
        }
.feature-list {
            list-style: none;
            padding: 0;
            margin: 25px 0;
        }
.feature-list li {
            padding: 12px 0 12px 35px;
            position: relative;
            color: var(--text-light);
            font-size: 1rem;
            line-height: 1.7;
            border-left: 2px solid rgba(34, 211, 238, 0.3);
            margin-bottom: 8px;
            transition: all 0.3s ease;
        }
.feature-list li:hover {
            border-left-color: var(--primary);
            background: rgba(34, 211, 238, 0.06);
        }
.feature-list li::before {
            content: '✦';
            position: absolute;
            left: 10px;
            color: var(--primary);
            font-size: 0.9rem;
            top: 15px;
        }
.stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin: 30px 0;
            justify-content: center;
        }
.stat-box {
            background: rgba(34, 211, 238, 0.08);
            border: 2px solid var(--primary);
            border-radius: 12px;
            padding: 25px 30px;
            text-align: center;
            min-width: 140px;
            flex: 1;
            max-width: 200px;
            transition: all 0.3s ease;
        }
.stat-box:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hard);
            background: rgba(34, 211, 238, 0.15);
        }
.stat-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            display: block;
            margin-bottom: 5px;
        }
.stat-label {
            font-size: 0.85rem;
            color: var(--text-light);
            opacity: 0.8;
            letter-spacing: 1px;
        }
.quote-box {
            background: rgba(251, 146, 60, 0.08);
            border-left: 4px solid var(--accent);
            padding: 25px 30px;
            border-radius: 0 12px 12px 0;
            margin: 30px 0;
        }
.quote-box p {
            color: var(--text-light);
            font-size: 1.05rem;
            font-style: italic;
            line-height: 1.8;
            margin: 0;
        }
.quote-box .quote-author {
            display: block;
            margin-top: 15px;
            color: var(--accent);
            font-style: normal;
            font-weight: 600;
            font-size: 0.9rem;
        }
.value-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
.value-item {
            background: rgba(34, 211, 238, 0.05);
            border: 2px solid rgba(34, 211, 238, 0.2);
            border-radius: 12px;
            padding: 25px;
            transition: all 0.3s ease;
        }
.value-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hard);
            transform: translateY(-3px);
        }
.value-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 15px;
            display: block;
        }
.value-item h4 {
            color: var(--text-light);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
.value-item p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.85;
            margin: 0;
        }
.about-hero .hero-title {
                font-size: 2rem;
            }
.about-section {
                padding: 50px 0;
            }
.stat-box {
                min-width: 120px;
                padding: 20px;
            }

/* --- 子页面追加 --- */
/* 本页特殊微调——基于全局变量, 保证风格一致 */
        .legal-block {
            background: rgba(255,255,255,0.03);
            border-left: 4px solid var(--primary);
            padding: 1.8rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin-bottom: 2.2rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
        }
.legal-block h2 {
            color: var(--primary);
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            border-bottom: 1px dashed rgba(34,211,238,0.3);
            padding-bottom: 0.7rem;
        }
.legal-block h2 i {
            color: var(--accent);
            font-size: 1.5rem;
        }
.legal-block p, .legal-block li {
            color: var(--text-light);
            font-size: 1rem;
            line-height: 1.8;
            opacity: 0.92;
        }
.legal-block ul {
            padding-left: 1.4rem;
            margin-top: 0.6rem;
        }
.legal-block li {
            margin-bottom: 0.4rem;
        }
.highlight-note {
            background: rgba(251,146,60,0.08);
            border: 1px solid rgba(251,146,60,0.3);
            padding: 1.2rem 1.4rem;
            border-radius: 8px;
            margin: 1.5rem 0 0.8rem;
            color: var(--text-light);
            font-weight: 500;
        }
.highlight-note i {
            color: var(--accent);
            margin-right: 0.5rem;
        }
.signature-date {
            margin-top: 2rem;
            text-align: right;
            font-style: italic;
            color: #94a3b8;
            border-top: 1px solid rgba(148,163,184,0.2);
            padding-top: 1.5rem;
        }
.signature-date span {
            color: var(--primary);
        }
.breadcrumb-custom {
            color: #94a3b8;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
.breadcrumb-custom a {
            color: var(--primary);
            text-decoration: none;
        }
.breadcrumb-custom a:hover {
            text-decoration: underline;
        }
/* 确保导航高亮当前页 (免责声明) */
        .nav-link.active-disclaimer {
            color: var(--primary) !important;
            font-weight: 700;
            border-bottom: 2px solid var(--accent);
        }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .guide-hero {
            padding: 120px 0 80px;
            background: linear-gradient(135deg, rgba(15,23,42,.9) 0%, rgba(34,211,238,.15) 100%);
            position: relative;
            overflow: hidden;
        }
.guide-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: var(--accent);
            opacity: .1;
            border-radius: 50%;
        }
.step-card {
            background: rgba(255,255,255,.04);
            border: 1px solid rgba(34,211,238,.2);
            border-radius: 16px;
            padding: 30px;
            margin-bottom: 20px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }
.step-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: var(--shadow-hard);
        }
.step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--bg-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 20px;
        }
.tip-box {
            background: rgba(251,146,60,.1);
            border-left: 4px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 30px 0;
        }
.faq-item:hover {
            border-color: var(--primary);
            background: rgba(34,211,238,.05);
        }
.key-feature {
            background: rgba(255,255,255,.04);
            border: 1px solid rgba(34,211,238,.15);
            border-radius: 16px;
            padding: 24px;
            height: 100%;
            transition: all .3s ease;
        }
.key-feature:hover {
            border-color: var(--accent);
            transform: translateY(-3px);
        }
.key-feature i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
.key-feature h4 {
            color: var(--text-light);
            font-weight: 600;
            margin-bottom: 12px;
        }
.key-feature p {
            color: rgba(226,232,240,.75);
            font-size: .9rem;
            line-height: 1.7;
        }
.editor-note {
            background: rgba(34,211,238,.08);
            border: 1px dashed var(--primary);
            border-radius: 16px;
            padding: 30px;
            margin: 40px 0;
        }
.editor-note h3 {
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 16px;
        }
.editor-note p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 16px;
        }
.editor-note p:last-child {
            margin-bottom: 0;
        }
.guide-hero {
                padding: 100px 0 60px;
            }
.step-card {
                padding: 20px;
            }