/* ===================================================
   情侣小站平台 - 主样式表
   设计风格: 暖粉色调 + 毛玻璃 + 圆角卡片 + 柔和渐变
   =================================================== */

/* ========== Google Fonts ========== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;700&family=Montserrat:wght@400;500;600;700&display=swap');

/* ========== CSS 变量 (Design Tokens) ========== */
:root {
    /* 主色调 - 暖粉系 */
    --color-primary: #FF6B8B;
    --color-primary-dark: #FF5278;
    --color-primary-light: #FF9EAE;
    --color-primary-soft: rgba(255,107,139,0.08);
    
    /* 辅助色 */
    --color-secondary: #4ECDC4;
    --color-accent: #FF8E53;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #FF6B8B, #FF8E53);
    --gradient-card: linear-gradient(135deg, rgba(255,107,139,0.05), rgba(255,142,83,0.05));
    --gradient-hero: linear-gradient(135deg, #FFF5F5 0%, #FFE8EC 50%, #FFF0F3 100%);
    
    /* 文字 */
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    --color-text-warm: #5D4037;
    
    /* 背景 */
    --color-bg: #F9F9F9;
    --color-bg-card: rgba(255,255,255,0.72);
    --color-bg-white: #FFFFFF;
    
    /* 边框 */
    --color-border: rgba(255,230,220,0.55);
    --color-border-light: rgba(0,0,0,0.06);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 24px rgba(200,150,140,0.10), 0 1px 3px rgba(200,150,140,0.08), inset 0 1px 1px rgba(255,255,255,0.6);
    --shadow-hover: 0 12px 36px rgba(200,150,140,0.16);
    --shadow-btn: 0 4px 14px rgba(255,107,139,.25);
    --shadow-btn-hover: 0 6px 20px rgba(255,107,139,.35);
    
    /* 圆角 */
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    
    /* 字体 */
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', -apple-system, 'Helvetica Neue', sans-serif;
    --font-en: 'Montserrat', sans-serif;
    
    /* 间距 */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 20px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    
    /* 最大宽度 */
    --max-width: 1200px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

a {
    color: var(--color-primary-dark);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

img {
    max-width: 100%;
    height: auto;
}

/* ========== 毛玻璃卡片 ========== */
.card {
    background: var(--color-bg-card);
    backdrop-filter: blur(14px) saturate(1.2);
    -webkit-backdrop-filter: blur(14px) saturate(1.2);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 160%;
    background: radial-gradient(ellipse, rgba(255,107,139,0.04) 0%, transparent 70%);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #FFFFFF;
    box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
    color: #FFFFFF;
}

.btn-secondary {
    background: var(--color-bg-white);
    color: var(--color-primary-dark);
    border: 1.5px solid var(--color-primary-light);
}

.btn-secondary:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary-light);
}

.btn-outline:hover {
    background: var(--color-primary-soft);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: rgba(0,0,0,0.04);
    color: var(--color-text);
}

.btn-danger {
    background: linear-gradient(135deg, #FF5252, #FF1744);
    color: #FFFFFF;
}

.btn-danger:hover {
    box-shadow: 0 6px 20px rgba(255,82,82,.3);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: var(--radius-xs);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 17px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    border: none;
}

.btn-icon:hover {
    background: rgba(255,107,139,0.15);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ========== 输入表单 ========== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-warm);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid rgba(0,0,0,0.08);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--color-text);
    background: var(--color-bg-white);
    transition: all 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(255,107,139,0.08);
}

.form-input::placeholder {
    color: var(--color-text-light);
}

textarea.form-input {
    min-height: 100px;
    resize: vertical;
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%23999'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 64px;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.navbar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary-dark);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--color-primary-dark);
}

.navbar-brand .logo-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    font-size: 18px;
    font-weight: 700;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.navbar-nav a {
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all 0.3s ease;
}

.navbar-nav a:hover {
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
}

.navbar-nav a.active {
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
}

.navbar-nav .btn {
    padding: 10px 24px;
}

.navbar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: none;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.navbar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========== Hero 区域 ========== */
.hero {
    padding: 140px 0 80px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,107,139,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(78,205,196,0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 20px;
    background: rgba(255,107,139,0.1);
    color: var(--color-primary-dark);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    animation: pulseGlow 1.5s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,107,139,0.4); }
    50% { box-shadow: 0 0 0 8px rgba(255,107,139,0); }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.hero-title .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-visual-card {
    width: 360px;
    background: var(--color-bg-card);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: 32px;
}

.hero-visual-card .instance-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.hero-visual-card .instance-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    font-size: 18px;
}

.hero-visual-card .instance-info {
    flex: 1;
}

.hero-visual-card .instance-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text);
}

.hero-visual-card .instance-status {
    font-size: 12px;
    color: var(--color-secondary);
}

.hero-visual-card .instance-badge {
    padding: 4px 10px;
    border-radius: 10px;
    background: rgba(78,205,196,0.1);
    color: var(--color-secondary);
    font-size: 12px;
    font-weight: 500;
}

/* ========== Section 通用 ========== */
.section {
    padding: var(--space-2xl) 0;
}

.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-label {
    display: inline-block;
    padding: 4px 16px;
    border-radius: 20px;
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.section-desc {
    font-size: 16px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========== 功能卡片网格 ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.feature-card {
    padding: 32px 28px;
    text-align: center;
}

.feature-card .feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    font-size: 28px;
    color: #FFF;
    box-shadow: var(--shadow-btn);
}

.feature-card .feature-icon.green {
    background: linear-gradient(135deg, #4ECDC4, #6AD1C8);
    box-shadow: 0 4px 14px rgba(78,205,196,.25);
}

.feature-card .feature-icon.purple {
    background: linear-gradient(135deg, #9171FA, #B8A5FD);
    box-shadow: 0 4px 14px rgba(145,113,250,.25);
}

.feature-card .feature-icon.orange {
    background: linear-gradient(135deg, #FF8E53, #FFB87A);
    box-shadow: 0 4px 14px rgba(255,142,83,.25);
}

.feature-card h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-warm);
    margin-bottom: var(--space-xs);
}

.feature-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========== 多实例特色展示 ========== */
.instance-showcase {
    background: var(--gradient-hero);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.showcase-card {
    padding: 28px;
    text-align: center;
}

.showcase-card .showcase-num {
    font-family: var(--font-en);
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.showcase-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-warm);
    margin: 8px 0;
}

.showcase-card p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========== 产品预览展示 ========== */
.product-showcase {
    background: var(--color-bg-white);
}

.preview-row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: var(--space-xl);
}

.preview-row:last-child {
    margin-bottom: 0;
}

.preview-row.reverse {
    flex-direction: row-reverse;
}

.preview-image-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

/* ---------- 电脑显示器框架 ---------- */
.monitor-frame {
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.monitor-frame:hover {
    transform: translateY(-6px);
}

.monitor-frame:hover .monitor-screen {
    box-shadow: 0 16px 40px rgba(200,150,140,0.18);
}

/* 显示器边框 - 淡粉色 */
.monitor-bezel {
    width: 520px;
    max-width: 100%;
    background: linear-gradient(180deg, #fce4e8 0%, #f8d0d8 100%);
    border-radius: 18px 18px 0 0;
    padding: 14px 14px 10px;
    box-shadow: 
        0 8px 30px rgba(200,150,160,0.18),
        inset 0 1px 0 rgba(255,255,255,0.5);
    border: 1px solid rgba(255,107,139,0.15);
    position: relative;
}

/* 顶部摄像头小孔 */
.monitor-camera {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #d4a0a8;
    margin: 0 auto 8px;
    box-shadow: inset 0 1px 1px rgba(255,255,255,0.6);
    position: relative;
}

.monitor-camera::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: rgba(180,100,110,0.6);
}

/* 屏幕区域 */
.monitor-screen {
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: 6px !important;
    padding: 0 !important;
    overflow: hidden;
    background: #fff !important;
    border: none !important;
    box-shadow: 
        inset 0 0 0 2px rgba(255,180,190,0.25),
        0 0 0 1px rgba(255,107,139,0.1) !important;
    transition: box-shadow 0.4s ease !important;
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.monitor-screen img {
    width: 100%;
    height: auto;
    object-fit: cover;
    object-position: top;
    display: block;
    min-height: 100%;
}

/* 显示器底部品牌标识 */
.monitor-brand {
    text-align: center;
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 500;
    color: rgba(180,100,120,0.6);
    letter-spacing: 1px;
    padding: 6px 0 2px;
}

/* 支架 */
.monitor-stand {
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 支架颈部 */
.monitor-neck {
    width: 44px;
    height: 28px;
    background: linear-gradient(180deg, #f8d0d8, #f0c4d0);
    clip-path: polygon(30% 0%, 70% 0%, 85% 100%, 15% 100%);
}

/* 底座 */
.monitor-base {
    width: 160px;
    height: 14px;
    background: linear-gradient(180deg, #f8d0d8 0%, #f0c4d0 100%);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(200,150,160,0.18);
    position: relative;
}

.monitor-base::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 3px;
    background: rgba(200,140,150,0.25);
    border-radius: 0 0 4px 4px;
}

/* ---------- 占位符（图片未加载时） ---------- */
.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--color-text-light);
    font-size: 14px;
    position: absolute;
    inset: 0;
}

.preview-placeholder-icon {
    font-size: 40px;
    opacity: 0.5;
}

.preview-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    border-radius: 20px;
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    font-size: 13px;
    font-weight: 500;
}

.preview-text {
    flex: 1;
    max-width: 480px;
}

.preview-row.reverse .preview-text {
    text-align: right;
}

.preview-title {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    color: var(--color-text-warm);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.4;
}

.preview-row.reverse .preview-title {
    justify-content: flex-end;
}

.preview-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.preview-desc {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: var(--space-md);
}

.preview-desc .highlight-text {
    color: var(--color-primary-dark);
    font-weight: 600;
}

.preview-features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.preview-row.reverse .preview-features-list {
    align-items: flex-end;
}

.preview-features-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: 8px 0;
}

.preview-features-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gradient-primary);
    flex-shrink: 0;
}

.preview-row.reverse .preview-features-list li {
    flex-direction: row-reverse;
}

/* ========== 场景卡片 ========== */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.scenario-card {
    padding: 32px 28px;
}

.scenario-card .scenario-icon {
    font-size: 32px;
    margin-bottom: var(--space-sm);
}

.scenario-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-warm);
    margin-bottom: 8px;
}

.scenario-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========== 定价表格 ========== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.pricing-card {
    padding: 32px 24px;
    text-align: center;
    position: relative;
}

.pricing-card.recommended {
    border: 2px solid var(--color-primary-light);
    transform: scale(1.03);
}

.pricing-card.recommended::after {
    content: '推荐';
    position: absolute;
    top: 14px;
    right: -8px;
    padding: 4px 16px;
    background: var(--gradient-primary);
    color: #FFF;
    font-size: 12px;
    font-weight: 500;
    border-radius: 0 8px 8px 0;
}

.pricing-card.recommended:hover {
    transform: scale(1.03) translateY(-4px);
}

.pricing-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-warm);
    margin-bottom: var(--space-sm);
}

.pricing-price {
    font-family: var(--font-en);
    margin-bottom: var(--space-md);
}

.pricing-price .currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    vertical-align: top;
}

.pricing-price .amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.pricing-price .period {
    font-size: 14px;
    color: var(--color-text-light);
}

.pricing-price .original {
    font-size: 14px;
    color: var(--color-text-light);
    text-decoration: line-through;
    display: block;
    margin-top: 4px;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-md);
    text-align: left;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-bottom: 1px solid rgba(0,0,0,0.03);
}

.pricing-features li::before {
    content: '✓ ';
    color: var(--color-primary);
    font-weight: 700;
}

.pricing-features li.disabled {
    color: var(--color-text-light);
    text-decoration: line-through;
}

.pricing-features li.disabled::before {
    content: '× ';
    color: #CCC;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--color-text);
    color: rgba(255,255,255,0.7);
    padding: var(--space-2xl) 0 var(--space-md);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
}

.footer-brand {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    color: #FFF;
    margin-bottom: var(--space-sm);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
}

.footer h4 {
    font-size: 16px;
    font-weight: 600;
    color: #FFF;
    margin-bottom: var(--space-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: var(--space-xl) auto 0;
    padding: var(--space-md) var(--space-md) 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* ========== 认证页面 ========== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    padding: var(--space-md);
}

.auth-card-container {
    width: 100%;
    max-width: 440px;
}

.auth-card {
    padding: 40px 36px;
}

.auth-card .auth-logo {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.auth-card .auth-logo .icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    color: #FFF;
    font-size: 24px;
    font-weight: 700;
}

.auth-card .auth-logo h2 {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--color-text);
}

.auth-card .auth-logo p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.auth-alt {
    text-align: center;
    margin-top: var(--space-md);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.auth-alt a {
    font-weight: 600;
    color: var(--color-primary-dark);
}

/* ========== 仪表板 ========== */
.dashboard {
    padding-top: 84px;
}

.dashboard-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-xl);
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.dashboard-header h1 {
    font-family: var(--font-serif);
    font-size: 28px;
    color: var(--color-text);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.stat-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
    z-index: 0;
}

/* 各色发光 */
.stat-card.stat-glow-pink::before  { box-shadow: inset 0 0 50px rgba(255,107,139,0.12), 0 0 30px rgba(255,107,139,0.06); }
.stat-card.stat-glow-green::before { box-shadow: inset 0 0 50px rgba(78,205,196,0.12), 0 0 30px rgba(78,205,196,0.06); }
.stat-card.stat-glow-purple::before { box-shadow: inset 0 0 50px rgba(145,113,250,0.12), 0 0 30px rgba(145,113,250,0.06); }
.stat-card.stat-glow-orange::before { box-shadow: inset 0 0 50px rgba(255,142,83,0.12), 0 0 30px rgba(255,142,83,0.06); }

.stat-card:hover { transform: translateY(-5px); }

.stat-card:hover::before { opacity: 1; }

.stat-card:hover .stat-icon {
    transform: scale(1.12);
}

/* 光点装饰 */
.stat-card .stat-spark {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    opacity: 0.03;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: none;
    z-index: 0;
}
.stat-card.stat-glow-pink .stat-spark  { background: #FF6B8B; }
.stat-card.stat-glow-green .stat-spark { background: #4ECDC4; }
.stat-card.stat-glow-purple .stat-spark { background: #9171FA; }
.stat-card.stat-glow-orange .stat-spark { background: #FF8E53; }
.stat-card:hover .stat-spark {
    opacity: 0.09;
    transform: scale(1.4) translate(-10px, 10px);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #FFF;
    position: relative;
    z-index: 1;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stat-card .stat-icon.pink { background: var(--gradient-primary); }
.stat-card .stat-icon.green { background: linear-gradient(135deg, #4ECDC4, #6AD1C8); }
.stat-card .stat-icon.purple { background: linear-gradient(135deg, #9171FA, #B8A5FD); }
.stat-card .stat-icon.orange { background: linear-gradient(135deg, #FF8E53, #FFB87A); }

.stat-card .stat-value {
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    position: relative;
    z-index: 1;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    position: relative;
    z-index: 1;
}

/* ========== 实例列表 ========== */
.instance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-md);
}

.instance-card {
    padding: 24px;
}

.instance-card .instance-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.instance-card .instance-name {
    font-weight: 600;
    font-size: 16px;
    color: var(--color-text-warm);
}

.instance-card .instance-key {
    font-size: 12px;
    color: var(--color-text-light);
    font-family: var(--font-en);
}

.instance-card .status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.active {
    background: rgba(78,205,196,0.1);
    color: #4ECDC4;
}

.status-badge.stopped {
    background: rgba(255,142,83,0.1);
    color: #FF8E53;
}

.status-badge.pending {
    background: rgba(145,113,250,0.1);
    color: #9171FA;
}

.status-badge.expired {
    background: rgba(255,82,82,0.1);
    color: #FF5252;
}

.instance-card .instance-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: var(--space-md);
}

.instance-card .meta-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.instance-card .instance-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.instance-card .instance-domain {
    padding: 10px 14px;
    background: rgba(0,0,0,0.02);
    border-radius: var(--radius-xs);
    font-size: 13px;
    font-family: var(--font-en);
    color: var(--color-primary-dark);
    word-break: break-all;
}

/* ========== 管理后台表格 ========== */
.admin-table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.admin-table th,
.admin-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.admin-table th {
    background: rgba(255,107,139,0.03);
    font-weight: 600;
    color: var(--color-text-warm);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-table tr:hover td {
    background: rgba(255,107,139,0.02);
}

.admin-table .actions-cell {
    display: flex;
    gap: 8px;
}

/* ========== 弹窗/模态框 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    width: 90%;
    max-width: 500px;
    max-height: 85vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.modal-header h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    color: var(--color-text);
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.04);
    cursor: pointer;
    font-size: 18px;
    color: var(--color-text-secondary);
    transition: all 0.2s;
}

.modal-close:hover {
    background: rgba(0,0,0,0.08);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ========== 提示消息 ========== */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: msgSlideIn 0.3s ease;
}

.alert-success {
    background: rgba(78,205,196,0.1);
    color: #2D8A7E;
    border: 1px solid rgba(78,205,196,0.2);
}

.alert-error {
    background: rgba(255,82,82,0.1);
    color: #C62828;
    border: 1px solid rgba(255,82,82,0.2);
}

.alert-info {
    background: rgba(66,165,245,0.1);
    color: #1565C0;
    border: 1px solid rgba(66,165,245,0.2);
}

.alert-warning {
    background: rgba(255,142,83,0.1);
    color: #E65100;
    border: 1px solid rgba(255,142,83,0.2);
}

@keyframes msgSlideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== 空状态 ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    opacity: 0.6;
}

.empty-state h3 {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

/* ========== 加载动画 ========== */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,107,139,0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== Tabs ========== */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    padding-bottom: 0;
}

.tab-btn {
    padding: 10px 20px;
    border: none;
    background: none;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: var(--color-primary-dark);
}

.tab-btn.active {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* ========== 面包屑 ========== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.breadcrumb a {
    color: var(--color-text-secondary);
}

.breadcrumb .separator {
    color: var(--color-text-light);
}

/* ========== 工具类 ========== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
}
.hidden { display: none !important; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .showcase-grid { grid-template-columns: repeat(2, 1fr); }
    .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-actions { justify-content: center; }
    .hero-subtitle { max-width: 100%; }
    .hero-visual { display: none; }
    .footer-inner { grid-template-columns: repeat(2, 1fr); }
    .preview-row,
    .preview-row.reverse {
        flex-direction: column;
        gap: 32px;
        text-align: center;
    }
    .preview-row.reverse .preview-text {
        text-align: center;
    }
    .preview-row.reverse .preview-title {
        justify-content: center;
    }
    .preview-row.reverse .preview-features-list {
        align-items: center;
    }
    .preview-row.reverse .preview-features-list li {
        flex-direction: row;
    }
    .preview-text {
        max-width: 100%;
    }
    .monitor-bezel {
        width: 100%;
        max-width: 420px;
        padding: 10px 10px 8px;
    }
    .monitor-base {
        width: 120px;
        height: 10px;
    }
    .monitor-neck {
        width: 32px;
        height: 22px;
    }
}

@media (max-width: 768px) {
    .hero-title { font-size: 34px; }
    .section-title { font-size: 28px; }
    .pricing-grid { grid-template-columns: 1fr; }
    .pricing-card.recommended { transform: none; }
    .pricing-card.recommended:hover { transform: translateY(-4px); }
    .showcase-grid { grid-template-columns: 1fr; }
    .scenarios-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .instance-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    
    .navbar-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-bg-card);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-md);
        border-bottom: 1px solid rgba(0,0,0,0.04);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
    }
    .navbar-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    .navbar-toggle { display: flex; }
    .dashboard-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .hero { padding: 120px 0 60px; }
    .hero-title { font-size: 28px; }
    .section { padding: var(--space-xl) 0; }
    .auth-card { padding: 28px 20px; }
    .stats-grid { grid-template-columns: 1fr; }
    .monitor-bezel {
        border-radius: 12px 12px 0 0;
        padding: 8px 8px 6px;
    }
    .monitor-base {
        width: 90px;
        height: 8px;
        border-radius: 0 0 6px 6px;
    }
    .monitor-neck {
        width: 24px;
        height: 16px;
    }
    .monitor-brand {
        font-size: 8px;
    }
    .monitor-camera {
        width: 5px;
        height: 5px;
        margin-bottom: 5px;
    }
    .monitor-camera::after {
        width: 2px;
        height: 2px;
    }
}