/* 核心变量与重置 */
        :root {
            --pr: #6d6fea;
            --pr-dk: #5557d9;
            --bg: #ffffff;
            --bg-alt: #f4f5f7;
            --bg-dk: #1a1a2e;
            --tx: #1f2328;
            --tx-mut: #656d76;
            --tx-inv: #ffffff;
            --rad: 16px;
            --rad-lg: 24px;
            --tr: 0.25s ease;
            --sh: 0 8px 24px rgba(109, 111, 234, 0.08);
            --sh-hv: 0 16px 40px rgba(109, 111, 234, 0.15);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg);
            color: var(--tx);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        /* 强制规范体系 */
        .globe, .biome, .hearth, .nexus, .skulk, .tail {
            display: flex;
            flex-wrap: wrap;
        }

        .globe > *, .biome > *, .hearth > *, .nexus > *, .skulk > *, .tail > *,
        .blaze > *, .flare > *, .aurora > *, .den > *, .gecko > *, .pelt > * {
            min-width: 0;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        .crest {
            white-space: normal;
        }

        /* 导航层 (scout/orbit) */
        .apex {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .scout {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .scout > * { min-width: 0; }

        .snout img {
            height: 36px;
            display: block;
        }

        .skulk {
            gap: 32px;
            align-items: center;
        }

        .trail {
            text-decoration: none;
            color: var(--tx-mut);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--tr);
            padding: 8px 0;
            position: relative;
        }

        .trail::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--pr);
            transition: var(--tr);
        }

        .trail:hover, .trail.active {
            color: var(--tx);
        }

        .trail:hover::after, .trail.active::after {
            width: 100%;
        }

        /* Hero层 (blaze/flare - fullbleed_overlay) */
        .blaze {
            background: var(--bg-dk);
            position: relative;
            overflow: hidden;
            padding: 140px 24px 120px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            color: var(--tx-inv);
        }

        .blaze::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 80% 20%, rgba(109, 111, 234, 0.3) 0%, transparent 60%),
                        radial-gradient(circle at 20% 80%, rgba(85, 87, 217, 0.2) 0%, transparent 50%);
            z-index: 1;
        }

        .flare {
            position: relative;
            z-index: 2;
            max-width: 800px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
        }

        .flare .crest {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
        }

        .flare .fur {
            font-size: clamp(1.125rem, 2vw, 1.35rem);
            opacity: 0.85;
            max-width: 680px;
        }

        /* 内存机制细节 (biome/den) */
        .biome {
            padding: 100px 24px;
            background: var(--bg);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .biome .hearth {
            max-width: 1200px;
            width: 100%;
            flex-direction: column;
            align-items: center;
            gap: 64px;
        }

        .biome .pelt.intro {
            text-align: center;
            max-width: 720px;
        }

        .biome .crest.section-title {
            font-size: clamp(2rem, 4vw, 2.75rem);
            font-weight: 700;
            margin-bottom: 20px;
        }

        .biome .fur.subtitle {
            font-size: 1.15rem;
            color: var(--tx-mut);
        }

        .nexus.grid {
            width: 100%;
            gap: 32px;
            justify-content: center;
        }

        .den {
            flex: 1 1 340px;
            background: var(--bg);
            border: 1px solid rgba(0,0,0,0.06);
            border-radius: var(--rad-lg);
            padding: 48px 40px;
            box-shadow: var(--sh);
            transition: var(--tr);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            transform: translateY(0);
        }

        .den:hover {
            transform: translateY(-8px);
            box-shadow: var(--sh-hv);
            border-color: rgba(109, 111, 234, 0.3);
        }

        .paw {
            width: 56px;
            height: 56px;
            color: var(--pr);
            background: rgba(109, 111, 234, 0.08);
            padding: 14px;
            border-radius: 16px;
            margin-bottom: 28px;
        }

        .den .crest {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .den .fur {
            color: var(--tx-mut);
            font-size: 1.05rem;
        }

        /* 标签页能力 (gecko) */
        .gecko {
            padding: 100px 24px;
            background: var(--bg-alt);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .gecko .hearth {
            max-width: 1200px;
            width: 100%;
            align-items: center;
            gap: 64px;
        }

        .gecko .pelt {
            flex: 1 1 450px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .gecko .crest {
            font-size: clamp(2rem, 4vw, 2.75rem);
            font-weight: 700;
        }

        .gecko .fur {
            font-size: 1.15rem;
            color: var(--tx-mut);
        }

        .gaze {
            width: 100%;
            height: auto;
            border-radius: var(--rad);
            box-shadow: var(--sh);
            display: block;
            border: 1px solid rgba(0,0,0,0.04);
        }

        /* 硬件加速结语 (aurora) */
        .aurora {
            padding: 120px 24px;
            background: linear-gradient(180deg, var(--bg) 0%, rgba(109, 111, 234, 0.05) 100%);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .aurora .hearth {
            max-width: 800px;
            width: 100%;
            text-align: center;
            flex-direction: column;
            align-items: center;
            gap: 32px;
        }

        .aurora .crest {
            font-size: clamp(2rem, 4vw, 2.5rem);
            font-weight: 700;
        }

        .aurora .fur {
            font-size: 1.15rem;
            color: var(--tx-mut);
        }

        /* 按钮与交互 (spark) */
        .spark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 36px;
            background: var(--pr);
            color: var(--tx-inv);
            text-decoration: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--tr);
            box-shadow: 0 8px 20px rgba(109, 111, 234, 0.25);
        }

        .spark:hover {
            background: var(--pr-dk);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(109, 111, 234, 0.35);
            color: var(--tx-inv);
        }

        /* 页脚 (root/ash) */
        .root {
            background: #111116;
            color: #8b8b99;
            padding: 80px 24px 40px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .tail {
            max-width: 1200px;
            width: 100%;
            gap: 40px;
            justify-content: space-between;
        }

        .tail .pelt.brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: -0.02em;
        }

        .tail .nexus {
            gap: 32px;
            align-items: center;
        }

        .tail .trail {
            color: #8b8b99;
            text-decoration: none;
            transition: var(--tr);
            font-size: 0.95rem;
        }

        .tail .trail:hover {
            color: #ffffff;
        }
        
        .tail .trail::after {
            display: none;
        }

        .tail .pelt.copy {
            width: 100%;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 32px;
            margin-top: 16px;
            text-align: center;
            font-size: 0.85rem;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .skulk {
                width: 100%;
                margin-top: 16px;
                gap: 16px;
                overflow-x: auto;
                padding-bottom: 8px;
                flex-wrap: nowrap; /* 移动端导航允许横向滚动以保持清晰 */
            }
            .skulk > * {
                flex-shrink: 0;
            }
            .blaze {
                padding: 100px 20px 80px;
            }
            .biome, .gecko, .aurora {
                padding: 64px 20px;
            }
            .biome .hearth, .gecko .hearth {
                gap: 48px;
            }
            .den {
                padding: 32px 24px;
            }
        }