@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;600&family=Inter:wght@300;400;500;600;700;800&family=Orbitron:wght@500;700;900&display=swap');

:root {
    /* 科技感配色系统 - 极简亮白风格 */
    --bg-darker: #f1f5f9;      /* 浅灰底 */
    --bg-dark: #ffffff;        /* 纯白主底 */
    --bg-panel: rgba(255, 255, 255, 0.75); /* 白色玻璃半透明 */
    --bg-panel-hover: rgba(255, 255, 255, 0.9);
    
    --primary: #0096c7;        /* 调深一点的赛博蓝以保证文字可读性 */
    --secondary: #7209b7;      /* 调深一点的幻影紫 */
    --accent: #10b981;         /* 在线状态绿 */
    --accent-red: #ef4444;     /* 故障红 */
    
    --text-primary: #0f172a;   /* 暗黑字 */
    --text-secondary: #475569; /* 深灰字 */
    --text-muted: #64748b;     /* 中灰字 */
    
    --border-color: rgba(0, 150, 199, 0.12);
    --border-glow: rgba(0, 150, 199, 0.25);
    --border-color-purple: rgba(114, 9, 183, 0.12);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-tech: 'Orbitron', sans-serif;
    --font-code: 'Fira Code', monospace;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--bg-darker);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 背景粒子 Canvas 容器 */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

/* 赛博网格底纹 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 150, 199, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 150, 199, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -2;
    pointer-events: none;
}

/* 渐变暗影底纹 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 60%, var(--bg-darker) 100%);
    z-index: -2;
    pointer-events: none;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
    box-shadow: 0 0 8px var(--primary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
    box-shadow: 0 0 12px var(--secondary);
}

/* 顶部导航栏 - 玻璃拟态 */
.header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03), 0 0 20px rgba(0, 150, 199, 0.03);
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-tech);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    text-decoration: none;
}

.logo span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary);
    display: inline-block;
    animation: pulse-glow 2s infinite;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.25rem 0;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--primary);
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.5);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition-normal);
    box-shadow: 0 0 8px var(--primary);
}

.nav-menu a:hover::after, .nav-menu a.active::after {
    width: 100%;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-normal);
}

/* 首屏 Hero 区域 */
.hero {
    position: relative;
    padding: 7rem 2rem 5rem;
    text-align: center;
    overflow: hidden;
}

.hero-inner {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.hero-badge {
    font-family: var(--font-tech);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.3);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
    animation: glow-pulse-border 3s infinite alternate;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.hero h1 span {
    background: linear-gradient(90deg, var(--text-primary), var(--primary), var(--secondary), var(--text-primary));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 4s linear infinite;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* 通用按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-glow {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--bg-darker);
    border: none;
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.4);
    font-weight: 700;
}

.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 242, 254, 0.7), 0 0 15px rgba(168, 85, 247, 0.5);
    color: #ffffff;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.btn-outline:hover {
    background: rgba(0, 242, 254, 0.1);
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
    transform: translateY(-2px);
}

/* 主内容布局 */
.layout-wrapper {
    max-width: 1300px;
    margin: 2rem auto 6rem;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 3rem;
    position: relative;
    z-index: 10;
}

.main-content {
    min-width: 0;
}

/* 侧边栏 */
.sidebar {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* 过滤及搜索栏 - 科技风面板 */
.filter-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 0.75rem;
}

.filter-header h3 {
    font-family: var(--font-tech);
    font-size: 1.1rem;
    letter-spacing: 1px;
    color: var(--primary);
}

.filter-group-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.search-input-wrap {
    position: relative;
}

.search-input-wrap input, .filter-group select {
    width: 100%;
    background: rgba(2, 4, 10, 0.6);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition-fast);
    outline: none;
}

.search-input-wrap input:focus, .filter-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

/* 分区标题 */
.section-title-wrap {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    margin-top: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 0.75rem;
}

.section-icon {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.1), rgba(168, 85, 247, 0.1));
    border: 1px solid var(--border-color);
    color: var(--primary);
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

.section-title-text h2 {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    letter-spacing: 1px;
    background: linear-gradient(90deg, var(--text-primary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title-text span {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 机场卡片列表 */
.card-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2rem;
    margin-bottom: 3.5rem;
}

/* 赛博朋克机场卡片 */
.card {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.04);
}

/* 边框发光粒子特效 */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
    transition: var(--transition-slow);
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.4);
    box-shadow: 0 12px 40px rgba(0, 242, 254, 0.15);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.card-title-wrap {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
}

.card-title {
    font-family: var(--font-tech);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-price {
    text-align: right;
}

.price-currency {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
}

.price-value {
    font-family: var(--font-tech);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

.price-period {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.card-slogan {
    background: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.1);
    color: var(--primary);
    padding: 0.5rem 0.875rem;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

/* 规格网格 */
.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.spec-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spec-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.spec-value svg {
    color: var(--accent);
}

.card-note {
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.note-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.note-content {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.card-actions .btn {
    padding: 0.65rem 1rem;
    font-size: 0.85rem;
    justify-content: center;
    border-radius: 6px;
}

/* 节点测速模拟器面板 */
.terminal-panel {
    background: #02040a;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 242, 254, 0.05);
    margin-bottom: 3rem;
}

.terminal-header {
    background: rgba(10, 16, 32, 0.9);
    padding: 0.75rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 242, 254, 0.15);
}

.terminal-controls {
    display: flex;
    gap: 6px;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background-color: var(--accent-red); }
.terminal-dot.yellow { background-color: #ffb300; }
.terminal-dot.green { background-color: var(--accent); }

.terminal-title {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

.terminal-badge {
    background: rgba(0, 242, 254, 0.1);
    color: var(--primary);
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    border: 1px solid rgba(0, 242, 254, 0.2);
    font-family: var(--font-code);
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--text-primary);
    min-height: 280px;
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    line-height: 1.5;
}

.terminal-line {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.terminal-line.cmd::before {
    content: '椰汁科技@client:~$';
    color: var(--primary);
    font-weight: 600;
}

.terminal-line.system {
    color: var(--secondary);
}

.terminal-line.success {
    color: var(--accent);
}

.terminal-line.error {
    color: var(--accent-red);
}

.speed-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.8rem;
}

.speed-table th, .speed-table td {
    padding: 0.5rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.speed-table th {
    color: var(--primary);
    font-weight: 600;
}

.latency-bar {
    width: 60px;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
}

.latency-fill {
    height: 100%;
    width: 0;
    transition: width 0.5s ease-out;
}

.latency-fill.good { background-color: var(--accent); }
.latency-fill.medium { background-color: #ffb300; }
.latency-fill.bad { background-color: var(--accent-red); }

.terminal-action-area {
    padding: 1rem 1.5rem;
    background: rgba(10, 16, 32, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.terminal-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.status-indicator.active {
    background-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    animation: pulse-glow 1.5s infinite;
}

/* 知识库教程 Tabs 切换 */
.tutorial-card {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.tutorial-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(2, 4, 10, 0.5);
    border-bottom: 1px solid rgba(0, 242, 254, 0.15);
}

.tab-btn {
    background: none;
    border: none;
    padding: 1.25rem;
    color: var(--text-secondary);
    font-family: var(--font-tech);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    letter-spacing: 1px;
}

.tab-btn:hover {
    color: var(--primary);
    background: rgba(0, 242, 254, 0.02);
}

.tab-btn.active {
    color: var(--primary);
    background: rgba(0, 242, 254, 0.05);
    box-shadow: inset 0 -3px 0 var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
}

.tab-content {
    display: none;
    padding: 2.5rem;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

/* 步骤结构 */
.step-list {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.step-item {
    display: flex;
    gap: 1.5rem;
    position: relative;
}

.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 20px;
    top: 50px;
    bottom: -35px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), transparent);
}

.step-num {
    font-family: var(--font-tech);
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--primary);
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid var(--border-color);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

.step-body {
    flex-grow: 1;
}

.step-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.step-body p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.client-download-box {
    background: rgba(2, 4, 10, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.client-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.client-name {
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.client-badge {
    background: rgba(0, 230, 118, 0.1);
    color: var(--accent);
    font-size: 0.7rem;
    padding: 0.1/0.5rem;
    border-radius: 4px;
    font-family: var(--font-code);
}

.client-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* 按钮组 */
.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

/* 警告框 */
.alert-box {
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    display: flex;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.alert-box svg {
    color: var(--secondary);
    flex-shrink: 0;
    margin-top: 2px;
}

/* FAQ 常见问题解答折叠面板 */
.faq-wrap {
    margin-top: 4rem;
}

.faq-item {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition-fast);
}

.faq-question {
    padding: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.02);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease-out;
    background: rgba(2, 4, 10, 0.2);
    border-top: 0 solid rgba(255, 255, 255, 0.05);
}

.faq-answer-inner {
    padding: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

.faq-item.active {
    border-color: var(--border-color);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    border-top-width: 1px;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-question svg {
    transition: var(--transition-fast);
    color: var(--text-secondary);
}

/* 文章列表结构 */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.article-card {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.08);
}

.article-card-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.article-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    transition: var(--transition-fast);
}

.article-card:hover h3 {
    color: var(--primary);
}

.article-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-more {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: var(--transition-fast);
    margin-top: auto;
}

.article-more:hover {
    gap: 0.5rem;
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.3);
}

/* 侧边栏 Widget */
.widget {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
}

.widget-title {
    font-family: var(--font-tech);
    font-size: 0.95rem;
    letter-spacing: 1px;
    color: var(--primary);
    margin-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.5rem;
}

.widget-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.widget-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.widget-links a:hover {
    color: var(--primary);
    padding-left: 0.25rem;
}

.cooperation-widget {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(0, 242, 254, 0.05));
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.cooperation-widget h4 {
    font-family: var(--font-tech);
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.cooperation-widget p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* 终端商务合作页面 (`contact.html`) */
.terminal-contact-box {
    background: #02040a;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    max-width: 800px;
    margin: 0 auto;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.terminal-prompt {
    color: var(--primary);
    font-weight: 600;
}

.terminal-email-display {
    font-family: var(--font-tech);
    font-size: 1.8rem;
    color: var(--primary);
    text-align: center;
    padding: 2rem 0;
    letter-spacing: 1px;
    text-shadow: 0 0 15px rgba(0, 242, 254, 0.5);
    background: rgba(0, 242, 254, 0.02);
    border: 1px dashed rgba(0, 242, 254, 0.2);
    border-radius: 8px;
    margin: 1.5rem 0;
    position: relative;
}

.terminal-email-display::before {
    content: '合作对接邮箱 / EMAIL';
    position: absolute;
    top: -10px;
    left: 20px;
    background: #02040a;
    padding: 0 8px;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-sans);
}

.cursor-blink {
    display: inline-block;
    width: 10px;
    height: 1.25rem;
    background-color: var(--primary);
    vertical-align: middle;
    animation: blink 1s infinite;
}

.terminal-btn-group {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

/* 成功浮动提示 */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: rgba(2, 4, 10, 0.9);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 230, 118, 0.15), 0 0 10px rgba(0, 230, 118, 0.2);
    font-family: var(--font-code);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 9999;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* 独立文章排版详情页样式 */
.article-header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 1.5rem;
}

.article-header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-body {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body h2 {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    color: var(--primary);
    margin: 2.5rem 0 1rem;
    border-left: 3px solid var(--primary);
    padding-left: 0.75rem;
}

.article-body h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 1.75rem 0 0.75rem;
}

.article-body ul, .article-body ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body blockquote {
    background: rgba(0, 242, 254, 0.02);
    border-left: 3px solid var(--secondary);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-primary);
}

.article-body code {
    font-family: var(--font-code);
    background: rgba(2, 4, 10, 0.6);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--primary);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* 页脚 (Footer) */
.footer {
    background: var(--bg-darker);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
    margin-top: 6rem;
    position: relative;
    z-index: 10;
    box-shadow: 0 -10px 40px rgba(15, 23, 42, 0.02);
}

.footer-inner {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-brand {
    max-width: 320px;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: 4rem;
    flex-wrap: wrap;
}

.footer-nav-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-nav-col h4 {
    font-family: var(--font-tech);
    font-size: 0.85rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.5rem;
}

.footer-nav-col a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.footer-nav-col a:hover {
    color: var(--primary);
    text-shadow: none;
}

.footer-copyright {
    max-width: 1300px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-tech-info {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.footer-tech-info span {
    color: var(--primary);
}

/* 动效关键帧 */
@keyframes pulse-glow {
    0%, 100% {
        opacity: 0.4;
        box-shadow: 0 0 4px var(--primary);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 15px var(--primary);
    }
}

@keyframes glow-pulse-border {
    0% {
        border-color: rgba(0, 242, 254, 0.2);
        box-shadow: 0 0 10px rgba(0, 242, 254, 0.05);
    }
    100% {
        border-color: rgba(0, 242, 254, 0.6);
        box-shadow: 0 0 20px rgba(0, 242, 254, 0.2);
    }
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

@keyframes blink {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 响应式媒体查询 */
@media (max-width: 1024px) {
    .layout-wrapper {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        margin-top: 2rem;
    }
    
    .hero h1 {
        font-size: 2.75rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 68px;
        right: -100%;
        width: 70%;
        height: calc(100vh - 68px);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 3rem 2rem;
        gap: 2rem;
        transition: var(--transition-normal);
        border-left: 1px solid var(--border-color);
        align-items: flex-start;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 1rem;
        padding: 0 2rem;
    }
    
    .card-list {
        grid-template-columns: 1fr;
    }
    
    .tab-btn {
        padding: 0.75rem 0.25rem;
        font-size: 0.8rem;
    }
    
    .tab-btn svg {
        display: none;
    }
    
    .tab-content {
        padding: 1.5rem;
    }
    
    .footer-inner {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        gap: 2rem;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .card-actions {
        grid-template-columns: 1fr;
    }
    
    .terminal-email-display {
        font-size: 1.2rem;
        padding: 1.5rem 0.5rem;
    }
    
    .terminal-btn-group {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Plume 博客文章流样式 (Ermao 风格) */
.blog-feed-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3.5rem;
}

.blog-post-card {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.02);
}

.blog-post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    opacity: 0.6;
    transition: var(--transition-normal);
}

.blog-post-card:hover {
    transform: translateY(-3px);
    border-color: rgba(0, 150, 199, 0.25);
    box-shadow: 0 12px 35px rgba(0, 150, 199, 0.06);
}

.blog-post-card:hover::before {
    opacity: 1;
    width: 6px;
}

.post-title {
    font-family: var(--font-sans);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.post-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.post-title a:hover {
    color: var(--primary);
}

.post-badge {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    padding: 0.15rem 0.6rem;
    font-size: 0.7rem;
    border-radius: 4px;
    font-weight: 800;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(0, 150, 199, 0.25);
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    border-bottom: 1px dashed rgba(15, 23, 42, 0.08);
    padding-bottom: 0.75rem;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.meta-icon {
    font-size: 0.9rem;
}

.post-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.post-footer {
    display: flex;
    justify-content: flex-start;
}

.post-footer .btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* 单栏居中排版 */
.layout-single-column {
    grid-template-columns: 1fr !important;
    max-width: 860px !important;
    margin: 2rem auto 6rem !important;
}
.layout-single-column .sidebar {
    display: none !important;
}

/* 文章详情居中排版 */
.layout-single-column.layout-article-detail {
    max-width: 800px !important;
}

/* 热门文章侧边栏挂件样式 */
.hot-articles-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    padding: 0;
    margin: 0;
}
.hot-article-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
}
.hot-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    font-family: var(--font-tech);
    font-weight: 700;
    font-size: 0.75rem;
    background: rgba(0, 150, 199, 0.1);
    color: var(--text-secondary);
    flex-shrink: 0;
}
.hot-number.rank-1 {
    background: #ef4444;
    color: #ffffff;
}
.hot-number.rank-2 {
    background: #f97316;
    color: #ffffff;
}
.hot-number.rank-3 {
    background: #eab308;
    color: #ffffff;
}
.hot-article-link {
    flex: 1;
    color: var(--text-secondary);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: var(--transition-fast);
}
.hot-article-link:hover {
    color: var(--primary);
    padding-left: 2px;
}
.hot-views {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 35px;
    text-align: right;
    flex-shrink: 0;
}

/* 实时网络监测控制台样式 */
.network-monitor-section {
    max-width: 1300px;
    margin: 0 auto 2.5rem;
    padding: 0 2rem;
    position: relative;
    z-index: 10;
}
.monitor-container {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
}
.monitor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 150, 199, 0.1);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}
.monitor-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.monitor-title h3 {
    font-family: var(--font-tech);
    font-size: 1.05rem;
    letter-spacing: 1px;
    color: var(--text-primary);
}
.pulse-beacon {
    width: 10px;
    height: 10px;
    background-color: var(--accent);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px var(--accent);
    animation: beacon-blink 1.5s infinite;
}
@keyframes beacon-blink {
    0% { transform: scale(0.95); opacity: 0.5; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 10px 4px rgba(16, 185, 129, 0.2); }
    100% { transform: scale(0.95); opacity: 0.5; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.monitor-timestamp {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--text-muted);
}
.monitor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}
@media (max-width: 1024px) {
    .monitor-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 580px) {
    .monitor-grid {
        grid-template-columns: 1fr;
    }
}
.monitor-card {
    background: rgba(0, 150, 199, 0.02);
    border: 1px solid rgba(0, 150, 199, 0.08);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    transition: var(--transition-fast);
}
.monitor-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 150, 199, 0.08);
}
.monitor-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.monitor-card-header h4 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.monitor-card-value {
    font-family: var(--font-tech);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}
.monitor-card-value.highlight-green {
    color: var(--accent);
    text-shadow: 0 0 8px rgba(16, 185, 129, 0.15);
}
.monitor-card-value.highlight-cyan {
    color: var(--primary);
    text-shadow: 0 0 8px rgba(0, 150, 199, 0.15);
}
.monitor-card-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.monitor-chart-wrap {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 150, 199, 0.05);
    border-radius: 12px;
    padding: 1rem;
}
.chart-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}
.chart-header span:first-child {
    font-family: var(--font-tech);
    letter-spacing: 0.5px;
}
.jitter-value {
    font-family: var(--font-code);
    color: var(--primary);
}
.canvas-container {
    width: 100%;
    height: 60px;
    position: relative;
}
#oscilloscope-canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 6px;
    border: 1px solid rgba(0, 150, 199, 0.03);
}