/* 基础变量与设计基因 (继承首页视觉契约) */
        :root {
            --color-primary: #c644e0;
            --color-primary-glow: rgba(198, 68, 224, 0.4);
            --color-primary-dark: #9b2bba;
            --color-secondary: #00e5ff;
            --color-bg-dark: #0a0510;
            --color-bg-surface: #140b1c;
            --color-bg-elevated: #1e112a;
            --color-text-main: #f0f0f5;
            --color-text-muted: #a09aa8;
            --color-border: rgba(198, 68, 224, 0.15);
            
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            
            --transition: all 0.25s ease;
            --font-main: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --layout-width: 1200px;
        }

        /* 全局重置与强制规则 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--color-bg-dark);
            color: var(--color-text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        /* 强制文本换行规范 */
        .echo-wrap {
            word-break: break-word;
            overflow-wrap: break-word;
            word-break: keep-all; /* 中文优化 */
        }

        h1, h2, h3, h4 {
            white-space: normal;
            color: var(--color-text-main);
            line-height: 1.3;
        }

        /* 强制Flexbox规则工具类 */
        .flex-matrix {
            display: flex;
            flex-wrap: wrap;
        }
        
        .flex-ping {
            min-width: 0;
        }

        /* --- 导航栏样式 (完美复刻首页要求) --- */
        .peak-cloak {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 5, 16, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            padding: 0 var(--space-md);
        }

        .helm-orbit {
            max-width: var(--layout-width);
            margin: 0 auto;
            height: 80px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        
        .helm-orbit > * {
            min-width: 0;
        }

        .sigil {
            display: flex;
            align-items: center;
        }

        .sigil img {
            height: 32px;
            width: auto;
        }

        .helm-matrix {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            align-items: center;
        }
        
        .helm-matrix > * {
            min-width: 0;
        }

        .helm-wire {
            color: var(--color-text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
        }

        .helm-wire:hover,
        .helm-wire.active {
            color: var(--color-text-main);
        }

        .helm-wire.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-primary-glow);
        }

        .warp-spark {
            display: inline-block;
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            box-shadow: 0 4px 15px rgba(198, 68, 224, 0.3);
            text-align: center;
            border: 1px solid transparent;
        }

        .warp-spark:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(198, 68, 224, 0.5);
            background: linear-gradient(135deg, #d45ceb, var(--color-primary));
        }

        /* --- 主内容区壳层 --- */
        .tunnel-mesh {
            width: 100%;
            display: flex;
            flex-direction: column;
        }

        /* --- 1. Hero区块: 透明定价 (Reverse Split 创意变体) --- */
        .nexus-portal {
            padding: var(--space-xl) var(--space-md);
            max-width: var(--layout-width);
            margin: 0 auto;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--space-lg);
            position: relative;
        }
        
        /* 装饰性背景光晕 */
        .nexus-portal::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 30%;
            width: 40vw;
            height: 40vw;
            background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
            opacity: 0.3;
            z-index: -1;
            filter: blur(60px);
        }

        .nexus-aura, .nexus-echo {
            flex: 1;
            min-width: 300px;
        }

        /* Reverse Split: 图形在左，文字在右 (通过DOM顺序或flex order实现，这里DOM顺序图形在前) */
        
        .nexus-aura {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        /* 纯CSS/SVG构建的抽象价值图形 */
        .glyph-cluster {
            position: relative;
            width: 100%;
            max-width: 400px;
            aspect-ratio: 1;
            background: var(--color-bg-surface);
            border-radius: 50%;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: inset 0 0 50px rgba(198, 68, 224, 0.05), 0 20px 40px rgba(0,0,0,0.4);
        }

        .glyph-cluster svg {
            width: 50%;
            height: 50%;
            color: var(--color-primary);
            filter: drop-shadow(0 0 20px var(--color-primary-glow));
        }

        .nexus-apex {
            font-size: clamp(2.5rem, 4vw, 3.5rem);
            font-weight: 700;
            letter-spacing: -1px;
            margin-bottom: var(--space-sm);
            background: linear-gradient(to right, #fff, #d1c5d6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nexus-desc {
            font-size: 1.125rem;
            color: var(--color-text-muted);
            max-width: 500px;
            margin-bottom: var(--space-md);
        }

        /* --- 2. 价格卡片区块: VPN购买计划 --- */
        .vault-cluster {
            padding: var(--space-lg) var(--space-md);
            background: linear-gradient(to bottom, transparent, var(--color-bg-surface), transparent);
            width: 100%;
        }

        .vault-mesh {
            max-width: var(--layout-width);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .vault-apex {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 700;
            text-align: center;
            margin-bottom: var(--space-xs);
        }

        .vault-subtitle {
            text-align: center;
            color: var(--color-text-muted);
            margin-bottom: var(--space-lg);
            max-width: 600px;
        }

        .vault-matrix {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: var(--space-md);
            width: 100%;
            align-items: stretch;
        }

        .vault-node {
            background: var(--color-bg-elevated);
            border-radius: var(--radius-xl);
            padding: var(--space-md);
            border: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            min-width: 0; /* Flex/Grid child safety */
        }

        .vault-node:hover {
            transform: translateY(-5px);
            border-color: var(--color-primary);
            box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 20px rgba(198, 68, 224, 0.1);
        }

        /* 推荐套餐高亮 */
        .vault-node.node-featured {
            background: linear-gradient(180deg, var(--color-bg-elevated) 0%, rgba(198, 68, 224, 0.05) 100%);
            border: 2px solid var(--color-primary);
            transform: scale(1.02);
        }

        .vault-node.node-featured:hover {
            transform: scale(1.02) translateY(-5px);
        }

        .node-blip {
            position: absolute;
            top: 0;
            right: 0;
            background: var(--color-primary);
            color: #fff;
            padding: 0.3rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            border-bottom-left-radius: var(--radius-md);
            box-shadow: -2px 2px 10px rgba(198, 68, 224, 0.4);
        }

        .node-apex {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-bottom: var(--space-sm);
        }

        .node-value-cluster {
            display: flex;
            align-items: baseline;
            margin-bottom: var(--space-sm);
            flex-wrap: wrap;
        }

        .node-currency {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-main);
        }

        .node-amount {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1;
            color: var(--color-text-main);
            margin: 0 0.2rem;
        }

        .node-period {
            color: var(--color-text-muted);
        }

        .node-billing {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: var(--space-md);
            padding-bottom: var(--space-md);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .node-matrix {
            list-style: none;
            margin-bottom: var(--space-lg);
            flex-grow: 1;
        }

        .node-ping {
            display: flex;
            align-items: flex-start;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
        }

        .node-ping svg {
            width: 20px;
            height: 20px;
            color: var(--color-primary);
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .vault-node .warp-spark {
            width: 100%;
            padding: 1rem;
            font-size: 1.1rem;
        }

        .vault-node:not(.node-featured) .warp-spark {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
            box-shadow: none;
        }

        .vault-node:not(.node-featured) .warp-spark:hover {
            background: rgba(198, 68, 224, 0.1);
        }

        /* --- 3. 退款承诺区块 (Trust Badge) --- */
        .aura-cloak {
            padding: var(--space-xl) var(--space-md);
            width: 100%;
            display: flex;
            justify-content: center;
        }

        .aura-mesh {
            max-width: 800px;
            background: linear-gradient(135deg, var(--color-bg-surface), var(--color-bg-elevated));
            border-radius: var(--radius-xl);
            padding: var(--space-lg);
            border: 1px solid var(--color-border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--space-md);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .aura-glyph {
            flex: 0 0 100px;
            height: 100px;
            display: flex;
            justify-content: center;
            align-items: center;
            background: rgba(198, 68, 224, 0.1);
            border-radius: 50%;
            color: var(--color-primary);
        }

        .aura-glyph svg {
            width: 50px;
            height: 50px;
        }

        .aura-echo {
            flex: 1;
            min-width: 250px;
        }

        .aura-apex {
            font-size: 1.8rem;
            margin-bottom: var(--space-xs);
        }

        /* --- 4. FAQ区块 --- */
        .depth-tunnel {
            padding: var(--space-lg) var(--space-md) var(--space-xl);
            max-width: 900px;
            margin: 0 auto;
            width: 100%;
        }

        .depth-peak {
            text-align: center;
            margin-bottom: var(--space-lg);
        }

        .depth-apex {
            font-size: 2rem;
            font-weight: 700;
        }

        .depth-matrix {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .depth-node {
            background: var(--color-bg-surface);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            transition: var(--transition);
        }

        .depth-node:hover {
            background: var(--color-bg-elevated);
            border-color: var(--color-border);
        }

        .depth-apex {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: var(--space-xs);
            display: flex;
            align-items: center;
        }
        
        .depth-apex::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            margin-right: 12px;
            box-shadow: 0 0 5px var(--color-primary);
        }

        .depth-echo {
            color: var(--color-text-muted);
            padding-left: 18px;
            font-size: 0.95rem;
        }

        /* --- 页脚 --- */
        .tail-base {
            background: var(--color-bg-surface);
            border-top: 1px solid rgba(255,255,255,0.05);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
        }

        .tail-brand {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--color-text-main);
            margin-bottom: var(--space-sm);
            display: inline-block;
        }

        .tail-echo {
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }

        .tail-matrix {
            margin-top: var(--space-md);
            display: flex;
            justify-content: center;
            gap: var(--space-md);
            flex-wrap: wrap;
        }

        .tail-wire {
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }
        
        .tail-wire:hover {
            color: var(--color-primary);
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .vault-node.node-featured {
                transform: none;
            }
            .vault-node.node-featured:hover {
                transform: translateY(-5px);
            }
        }

        @media (max-width: 768px) {
            .helm-matrix {
                display: none; /* 简化移动端导航，实际项目中需JS配合菜单展开 */
            }
            
            .nexus-portal {
                flex-direction: column;
                text-align: center;
                padding-top: var(--space-md);
            }

            .nexus-echo {
                order: 2;
            }
            
            .nexus-aura {
                order: 1;
            }

            .nexus-apex {
                font-size: 2rem;
            }

            .vault-matrix {
                grid-template-columns: 1fr;
            }
            
            .aura-mesh {
                flex-direction: column;
                text-align: center;
            }
        }

.helm-peak-cloak {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: var(--color-text-main);
}
.helm-peak-cloak,
.helm-peak-cloak *,
.helm-peak-cloak *::before,
.helm-peak-cloak *::after {
    box-sizing: border-box;
}

.helm-peak-cloak nav,
.helm-peak-cloak div,
.helm-peak-cloak section,
.helm-peak-cloak article,
.helm-peak-cloak aside,
.helm-peak-cloak p,
.helm-peak-cloak h1,
.helm-peak-cloak h2,
.helm-peak-cloak h3,
.helm-peak-cloak h4,
.helm-peak-cloak h5,
.helm-peak-cloak h6,
.helm-peak-cloak a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.helm-peak-cloak p,
.helm-peak-cloak h1,
.helm-peak-cloak h2,
.helm-peak-cloak h3,
.helm-peak-cloak h4,
.helm-peak-cloak h5,
.helm-peak-cloak h6 {
    text-decoration: none;
}

.helm-peak-cloak img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.helm-peak-cloak {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.helm-peak-cloak a.helm-helm-wire {
    --aisite-shell-nav-padding: 0.5rem 0;
    --aisite-shell-nav-margin: 0;
    --aisite-shell-nav-line-height: normal;
    --aisite-shell-nav-display: inline;
    --aisite-shell-nav-height: auto;
    --aisite-shell-nav-min-height: auto;
}

.helm-peak-cloak a.helm-helm-wire,
.helm-peak-cloak a.helm-helm-wire:hover,
.helm-peak-cloak a.helm-helm-wire:focus,
.helm-peak-cloak a.helm-helm-wire:active,
.helm-peak-cloak a.helm-helm-wire.active,
.helm-peak-cloak a.helm-helm-wire[aria-current="page"] {
    background: transparent;
    border: none;
    border-bottom: none;
    box-shadow: none;
    outline: none;
    text-decoration: none;
    padding: var(--aisite-shell-nav-padding, 0);
    margin: var(--aisite-shell-nav-margin, 0);
    line-height: var(--aisite-shell-nav-line-height, normal);
    display: var(--aisite-shell-nav-display, inline);
    height: var(--aisite-shell-nav-height, auto);
    min-height: var(--aisite-shell-nav-min-height, auto);
}

.helm-peak-cloak{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(10, 5, 16, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(198, 68, 224, 0.15);
            z-index: 1000;
            padding: 0 2rem;
        }

.helm-peak-cloak .helm-helm-orbit{
            max-width: 1400px;
            margin: 0 auto;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

.helm-peak-cloak .helm-sigil{
            flex-shrink: 0;
            width: 160px;
        }

.helm-peak-cloak .helm-helm-matrix{
            align-items: center;
            gap: 2.5rem;
        }

.helm-peak-cloak .helm-helm-wire{
            font-size: 1rem;
            color: #a09aa8;
            font-weight: 500;
            position: relative;
            padding: 0.5rem 0;
        }

.helm-peak-cloak .helm-helm-wire:hover, .helm-peak-cloak .helm-helm-wire.active{
            color: #f0f0f5;
        }

.helm-peak-cloak .helm-helm-wire.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: #c644e0;
            box-shadow: 0 0 10px rgba(198, 68, 224, 0.4);
        }

.helm-peak-cloak .helm-warp-spark{
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.8rem 1.8rem;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            text-align: center;
        }

.helm-peak-cloak .helm-warp-spark{
            background: linear-gradient(135deg, #c644e0, #9b2bba);
            color: #fff;
            box-shadow: 0 4px 15px rgba(198, 68, 224, 0.3);
        }

.helm-peak-cloak .helm-warp-spark:hover{
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(198, 68, 224, 0.5);
        }

@media (max-width: 768px){.helm-peak-cloak .helm-helm-matrix{
                display: none; 
            }}

.helm-peak-cloak {
    background: rgb(10, 5, 16);
    background-image: none;
}

.base-base-tunnel {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: var(--color-text-main);
}
.base-base-tunnel,
.base-base-tunnel *,
.base-base-tunnel *::before,
.base-base-tunnel *::after {
    box-sizing: border-box;
}

.base-base-tunnel nav,
.base-base-tunnel div,
.base-base-tunnel section,
.base-base-tunnel article,
.base-base-tunnel aside,
.base-base-tunnel p,
.base-base-tunnel h1,
.base-base-tunnel h2,
.base-base-tunnel h3,
.base-base-tunnel h4,
.base-base-tunnel h5,
.base-base-tunnel h6,
.base-base-tunnel a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.base-base-tunnel p,
.base-base-tunnel h1,
.base-base-tunnel h2,
.base-base-tunnel h3,
.base-base-tunnel h4,
.base-base-tunnel h5,
.base-base-tunnel h6 {
    text-decoration: none;
}

.base-base-tunnel img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.base-base-tunnel {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.base-base-tunnel a,
.base-base-tunnel a:hover,
.base-base-tunnel a:focus,
.base-base-tunnel a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.base-base-tunnel{
            background: #050208;
            padding: 4rem 2rem 2rem;
            border-top: 1px solid rgba(198, 68, 224, 0.15);
            flex-direction: column;
        }

.base-base-tunnel .base-base-matrix{
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
            justify-content: space-between;
            gap: 2rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

.base-base-tunnel .base-base-cluster{
            flex-direction: column;
            gap: 1rem;
            width: calc(25% - 1.5rem);
        }

.base-base-tunnel .base-base-apex{
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(to right, #fff, #c644e0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

.base-base-tunnel .base-base-peak{
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.5rem;
        }

.base-base-tunnel .base-base-wire{
            color: #a09aa8;
            font-size: 0.9rem;
        }

.base-base-tunnel .base-base-wire:hover{
            color: #c644e0;
        }

.base-base-tunnel .base-base-tail{
            max-width: 1400px;
            margin: 2rem auto 0;
            width: 100%;
            justify-content: space-between;
            color: #a09aa8;
            font-size: 0.85rem;
        }

@media (max-width: 768px){.base-base-tunnel .base-base-cluster{
                width: 100%;
            }}