/* 全局CSS变量 - 森林绿原木 */
        :root {
            --primary: #16a34a;
            --accent: #84cc16;
            --bg: #f7fee7;
            --text: #1a2e05;
            --border: #1a2e05;
            --muted: #3f5e2f;
            --card-bg: #ffffff;
        }
        * { border-radius: 0 !important; }
        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
            letter-spacing: 0.01em;
            line-height: 1.7;
        }
        h1, h2, h3, .display-title, .brand-font {
            font-family: 'Segoe Script', 'Brush Script MT', 'Comic Sans MS', 'Dancing Script', 'Apple Chancery', cursive;
            font-weight: 700;
            letter-spacing: 0.01em;
        }
        /* 超大标题 */
        .hero-title {
            font-size: calc(3rem + 1vw);
            line-height: 1.1;
            font-weight: 800;
            color: var(--text);
        }
        .stat-number {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        /* 极简无阴影，纯描边分割 */
        .border-divider {
            border-bottom: 2px solid var(--border);
        }
        .no-shadow, .card, .navbar, .list-item, .table, .faq-item {
            box-shadow: none !important;
            border-radius: 0 !important;
        }
        .card, .list-item, .table, .faq-item, .cta-box {
            background: transparent;
            border: 2px solid var(--border);
        }
        .navbar {
            border-bottom: 2px solid var(--border);
            background: var(--bg);
            transition: background 0.25s ease, backdrop-filter 0.25s;
        }
        .navbar.scrolled {
            background: rgba(247, 254, 231, 0.9);
            backdrop-filter: blur(6px);
            border-bottom: 2px solid var(--border);
        }
        .nav-link {
            color: var(--text) !important;
            font-weight: 500;
            margin: 0 0.5rem;
        }
        .nav-link:hover {
            color: var(--primary) !important;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--text) !important;
            font-family: inherit;
            letter-spacing: -0.02em;
        }
        /* 左侧固定侧栏 */
        .left-sidebar {
            position: sticky;
            top: 5.5rem;
            align-self: flex-start;
            border-right: 2px solid var(--border);
            padding-right: 1.5rem;
            height: 100%;
            margin-bottom: 2rem;
        }
        .sidebar-link {
            display: block;
            padding: 0.5rem 0;
            color: var(--text);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dashed var(--primary);
            transition: padding-left 0.2s;
        }
        .sidebar-link:hover {
            padding-left: 8px;
            color: var(--primary);
        }
        /* 瀑布流卡片 (使用masonry-like) */
        .masonry-card {
            border: 2px solid var(--border);
            padding: 1.25rem;
            background: rgba(255, 255, 255, 0.3);
            margin-bottom: 1.5rem;
            transition: transform 0.2s;
        }
        .masonry-card:hover {
            transform: translateY(-3px);
            background: rgba(255,255,240,0.5);
        }
        /* 海报hover播放按钮 */
        .poster-wrap {
            position: relative;
            overflow: hidden;
            background: #e4f0c0;
            min-height: 150px;
            border: 2px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .poster-wrap img {
            width: 100%;
            height: auto;
            display: block;
            transition: opacity 0.3s;
        }
        .poster-wrap .play-overlay {
            position: absolute;
            inset: 0;
            background: rgba(22, 163, 74, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s;
            color: white;
            font-size: 3rem;
            backdrop-filter: grayscale(0.3);
        }
        .poster-wrap:hover .play-overlay {
            opacity: 1;
        }
        /* 表格样式 */
        .table-compare {
            width: 100%;
            border-collapse: collapse;
            border: 2px solid var(--border);
        }
        .table-compare th, .table-compare td {
            border: 2px solid var(--border);
            padding: 0.75rem 1rem;
            background: rgba(255,255,240,0.3);
        }
        .table-compare th {
            background: var(--primary);
            color: var(--bg);
            font-weight: 600;
        }
        /* 编号清单 */
        .numbered-list {
            list-style: none;
            counter-reset: step-counter;
            padding-left: 0;
        }
        .numbered-list li {
            counter-increment: step-counter;
            padding: 0.75rem 0 0.75rem 2.8rem;
            position: relative;
            border-bottom: 1px solid var(--border);
            font-weight: 500;
        }
        .numbered-list li::before {
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 0.6rem;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            font-family: 'Inter', sans-serif;
        }
        /* FAQ */
        .faq-item {
            padding: 1.2rem;
            margin-bottom: 1rem;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary);
        }
        /* 动画 */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.7s;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* 分隔线 */
        .section-title {
            border-left: 8px solid var(--primary);
            padding-left: 1rem;
            font-weight: 700;
            font-size: 2rem;
            margin: 3rem 0 2rem;
        }
        footer {
            border-top: 3px solid var(--text);
            padding: 2rem 0;
            margin-top: 4rem;
            background: var(--bg);
        }
        .cta-box {
            background: var(--primary);
            color: var(--bg);
            padding: 2.5rem;
            border: 2px solid var(--text);
        }
        .cta-box .btn {
            border: 2px solid var(--text);
            border-radius: 0;
            font-weight: 600;
            background: var(--bg);
            color: var(--text);
        }
        .cta-box .btn:hover {
            background: var(--accent);
            color: #1a2e05;
        }
        /* 侧边栏固定 */
        @media (max-width: 992px) {
            .left-sidebar {
                position: static;
                border-right: none;
                border-bottom: 2px solid var(--border);
                padding-bottom: 1rem;
                margin-bottom: 2rem;
            }
        }
        .sidebar-heading {
            font-weight: 800;
            letter-spacing: -0.02em;
            border-bottom: 2px solid var(--border);
            padding-bottom: 0.5rem;
        }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .about-hero { padding: 4rem 0 2rem; }
.about-section { padding: 2rem 0; }
.timeline-item { position: relative; padding-left: 2rem; margin-bottom: 2rem; }
.timeline-item::before { content: ''; position: absolute; left: 0; top: 0.5rem; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); }
.value-card { padding: 1.5rem; background: var(--card-bg); border: 2px solid var(--border); border-radius: 12px; margin-bottom: 1.5rem; transition: transform 0.2s; }
.value-card:hover { transform: translateY(-4px); }
.milestone { background: var(--card-bg); border: 2px solid var(--border); border-radius: 12px; padding: 1.5rem; text-align: center; }
.milestone i { font-size: 2rem; color: var(--primary); margin-bottom: 0.5rem; }
.milestone-number { font-size: 2.5rem; font-weight: 800; color: var(--primary); }
.about-quote { border-left: 4px solid var(--accent); padding: 1rem 1.5rem; background: rgba(132, 204, 22, 0.1); border-radius: 0 12px 12px 0; margin: 2rem 0; }
.about-hero { padding-top: 2rem; }