/* ============================================
   官网首页 v2.0 - 深蓝科技风
   ============================================ */

/* ========== CSS 变量 ========== */
:root {
    --bg-dark: #0a101f;
    --bg-card: rgba(15, 30, 60, 0.6);
    --bg-card-hover: rgba(20, 40, 80, 0.8);
    --primary: #0099ff;
    --primary-light: #00ccff;
    --primary-gradient: linear-gradient(135deg, #0099ff, #00ccff);
    --primary-glow: rgba(0, 153, 255, 0.3);
    --primary-glow-strong: rgba(0, 204, 255, 0.5);
    --border-glow: rgba(0, 150, 255, 0.2);
    --border-glow-strong: rgba(0, 200, 255, 0.4);
    --text-primary: #ffffff;
    --text-secondary: #b0c4e0;
    --text-muted: #667892;
    --success: #36d370;
    --warning: #ff9c40;
    --danger: #ff6b6b;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-glow: 0 0 30px rgba(0, 153, 255, 0.2);
    --shadow-glow-strong: 0 0 40px rgba(0, 204, 255, 0.3);
}

/* ========== 全局重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark) !important;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 0;
    margin-top: 0;
}

/* 公众号弹窗二维码居中 */
.modal-overlay .modal-body img {
    display: block !important;
    margin: 0 auto 16px !important;
}

/* 悬浮客服弹窗二维码居中 */
.service-qrcode {
    text-align: center !important;
}
.service-qrcode img {
    display: block !important;
    margin: 0 auto !important;
    float: none !important;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 153, 255, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 80%, rgba(0, 204, 255, 0.08), transparent);
    pointer-events: none;
    z-index: -1;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; color: inherit; font: inherit; }

/* ========== 通用工具类 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

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

.section-more {
    text-align: center;
    margin-top: 40px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 15px;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--primary-glow-strong);
}

/* 顶部导航栏登录/注册按钮：恢复为全站统一风格（对齐user页面header样式） */
.header-actions .btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-dark)) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3) !important;
    border: none !important;
}

.header-actions .btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-blue-light), var(--accent-blue)) !important;
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5) !important;
    transform: translateY(-2px) !important;
}

.header-actions .btn-ghost {
    background: transparent !important;
    color: var(--text-secondary) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: none !important;
}

.header-actions .btn-ghost:hover {
    border-color: var(--accent-blue) !important;
    color: var(--accent-blue) !important;
    background: transparent !important;
    transform: none !important;
    box-shadow: none !important;
}

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

.btn-outline:hover {
    background: rgba(0, 153, 255, 0.1);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ========== 滚动渐入 ========== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 区块2：轮播图 Hero ========== */
.hero-section {
    position: relative;
    height: 420px;
    overflow: hidden;
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    align-items: center;
}

.hero-slide img {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.hero-slide-link {
    position: absolute;
    inset: 0;
    display: block;
    z-index: 1;
}

.hero-slide-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    background: 
        linear-gradient(90deg, rgba(10, 16, 31, 0.85) 0%, rgba(10, 16, 31, 0.5) 50%, transparent 100%),
        linear-gradient(180deg, rgba(10, 16, 31, 0.3) 0%, transparent 30%, rgba(10, 16, 31, 0.6) 100%);
}

.hero-content-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 5;
    display: flex;
    align-items: flex-start;
    padding-top: 80px;
    pointer-events: none;
}

.hero-content-overlay .hero-slide-content {
    pointer-events: auto;
    margin: 0 auto;
    text-align: center;
    max-width: 700px;
    padding-top: 0;
}

.hero-content-overlay .hero-buttons {
    justify-content: center;
}

.hero-content-overlay .hero-badges {
    justify-content: center;
}

.hero-default {
    background: 
        radial-gradient(ellipse 60% 50% at 30% 50%, rgba(0, 100, 200, 0.3), transparent),
        radial-gradient(ellipse 40% 30% at 70% 70%, rgba(0, 200, 255, 0.15), transparent),
        var(--bg-dark);
}

.hero-slide-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    padding-top: 60px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

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

.hero-badge {
    padding: 6px 14px;
    background: rgba(0, 153, 255, 0.1);
    border: 1px solid var(--border-glow);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(10, 16, 31, 0.6);
    backdrop-filter: blur(10px);
    color: #fff;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    transition: all 0.3s ease;
    border: 1px solid var(--border-glow);
}

.carousel-arrow:hover {
    background: rgba(0, 153, 255, 0.3);
    border-color: var(--primary);
}

.carousel-prev { left: 24px; }
.carousel-next { right: 24px; }

.carousel-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    width: 28px;
    border-radius: 5px;
    background: var(--primary-gradient);
    box-shadow: 0 0 10px var(--primary-glow);
}

/* ========== 区块3：VIP中心 ========== */
.vip-section {
    background: linear-gradient(90deg, rgba(10, 16, 31, 0.95) 0%, rgba(15, 25, 50, 0.95) 50%, rgba(10, 16, 31, 0.95) 100%) !important;
    border-top: 1px solid rgba(0, 153, 255, 0.2) !important;
    border-bottom: 1px solid rgba(0, 153, 255, 0.2) !important;
    padding: 30px 0 !important;
    margin: 0 !important;
}

.vip-container {
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 0 24px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 20px !important;
    box-sizing: border-box !important;
    width: 100% !important;
    float: none !important;
    flex-wrap: nowrap !important;
}

.vip-left {
    display: flex !important;
    align-items: center !important;
    gap: 16px !important;
    flex-shrink: 0 !important;
}

.vip-icon {
    font-size: 36px !important;
    line-height: 1 !important;
}

.vip-logo {
    height: 40px !important;
    width: auto !important;
    object-fit: contain !important;
    display: block !important;
}

.vip-title {
    font-size: 22px !important;
    font-weight: 700 !important;
    color: #fff !important;
    margin: 0 !important;
    line-height: 1.3 !important;
}

.vip-desc {
    font-size: 13px !important;
    color: #b0c4e0 !important;
    margin-top: 4px !important;
    white-space: nowrap !important;
    line-height: 1.4 !important;
}

.vip-features {
    display: flex !important;
    gap: 28px !important;
    flex: 1 !important;
    justify-content: center !important;
    flex-wrap: nowrap !important;
}

.vip-feature {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    color: #b0c4e0 !important;
    font-size: 13px !important;
    line-height: 1.3 !important;
    float: none !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
}

.vip-feature-icon {
    width: 32px !important;
    height: 32px !important;
    background: rgba(0, 153, 255, 0.1) !important;
    border: 1px solid rgba(0, 153, 255, 0.2) !important;
    border-radius: 8px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 16px !important;
    flex-shrink: 0 !important;
    float: none !important;
}

/* 会员信息样式 */
.vip-member-info {
    display: flex !important;
    gap: 20px !important;
    align-items: center !important;
    flex: 1 !important;
    justify-content: center !important;
    flex-wrap: wrap !important;
}

.vip-member-info .vip-feature {
    flex-direction: row !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 10px 18px !important;
    background: rgba(0, 153, 255, 0.05) !important;
    border-radius: 10px !important;
    border: 1px solid rgba(0, 153, 255, 0.15) !important;
}

.vip-member-info .vip-feature-icon {
    font-size: 18px !important;
    margin: 0 !important;
}

.vip-feature-text {
    display: flex !important;
    flex-direction: column !important;
    gap: 2px !important;
    line-height: 1.3 !important;
}

.vip-feature-label {
    font-size: 12px !important;
    color: #667892 !important;
}

.vip-feature-value {
    font-size: 14px !important;
    color: #fff !important;
    font-weight: 600 !important;
}

.vip-btn {
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 12px 28px !important;
    background: linear-gradient(135deg, #0099ff 0%, #00ccff 100%) !important;
    border: none !important;
    border-radius: 50px !important;
    color: #fff !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    text-decoration: none !important;
    box-shadow: 0 4px 20px rgba(0, 153, 255, 0.4) !important;
    transition: all 0.3s !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    float: none !important;
    line-height: 1.4 !important;
}

.vip-btn:hover {
    background: linear-gradient(135deg, #0088ee 0%, #00bbff 100%) !important;
    box-shadow: 0 6px 30px rgba(0, 153, 255, 0.6) !important;
    transform: translateY(-2px) !important;
    color: #fff !important;
    text-decoration: none !important;
}

/* 已登录会员状态卡 */
.vip-status-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-xl);
    padding: 32px 40px;
    backdrop-filter: blur(10px);
}

.vip-status-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.vip-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.vip-info h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.vip-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-right: 8px;
}

.vip-badge.svip {
    background: linear-gradient(135deg, #ff9c40, #ff6b6b);
    color: #fff;
}

.vip-badge.vip {
    background: var(--primary-gradient);
    color: #fff;
}

.vip-badge.normal {
    background: rgba(102, 120, 146, 0.2);
    color: var(--text-muted);
}

.vip-expire {
    font-size: 13px;
    color: var(--text-muted);
}

.vip-status-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.vip-status-text {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========== 品牌简介 ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-title { text-align: left; margin-bottom: 20px; }

.about-desc {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
    font-size: 15px;
}

.about-features {
    display: flex;
    gap: 24px;
    margin-top: 28px;
    flex-wrap: wrap;
}

.about-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.about-feature-icon { font-size: 20px; }

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.about-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.about-stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.about-stat-num {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 4px;
}

.about-stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== 快速通道 ========== */
.channel-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.channel-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: all 0.3s ease;
    display: block;
    overflow: hidden;
}

.channel-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.channel-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.channel-card:hover::before { transform: scaleX(1); }

.channel-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.channel-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.channel-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.channel-arrow {
    color: var(--primary-light);
    font-size: 18px;
    transition: transform 0.3s ease;
}

.channel-card:hover .channel-arrow {
    transform: translateX(4px);
}

/* ========== 核心优势 ========== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all 0.3s ease;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-glow);
}

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

.advantage-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.advantage-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

/* ========== 产品矩阵 ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.product-tag {
    position: absolute;
    top: 16px; right: 16px;
    padding: 3px 10px;
    background: linear-gradient(135deg, #ff6b6b, #ff9c40);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 12px;
    z-index: 1;
}

.product-category {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.product-cat-tag {
    padding: 3px 10px;
    background: rgba(0, 153, 255, 0.1);
    border-radius: 12px;
    font-size: 12px;
    color: var(--primary-light);
}

.product-device { font-size: 14px; }

.product-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.product-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
    flex-grow: 0;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.feature-tag {
    padding: 2px 8px;
    background: rgba(54, 211, 112, 0.1);
    border-radius: 10px;
    font-size: 11px;
    color: var(--success);
}

.product-prices {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 16px;
    padding: 12px 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
}

.price-col {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 45px;
    word-break: break-word;
    overflow: hidden;
}

.price-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.price-value {
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
    display: block;
}

.price-value.market { color: var(--warning); }
.price-value.vip { color: var(--success); }
.price-value.payback { color: var(--primary-light); }

.product-btn {
    margin-top: auto;
    font-size: 13px;
    padding: 10px 16px;
}

.products-footer {
    text-align: center;
    margin-top: 40px;
}

.products-more {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

/* ========== 适用场景 ========== */
.scenes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.scene-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all 0.3s ease;
}

.scene-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.scene-icon { font-size: 40px; margin-bottom: 16px; }

.scene-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.scene-pain, .scene-solution, .scene-tools {
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.7;
}

.scene-label {
    font-weight: 600;
    color: var(--primary-light);
}

.scene-pain p { color: var(--warning); display: inline; }
.scene-solution p { color: var(--success); display: inline; }
.scene-tools span { color: var(--text-secondary); display: inline; }

/* ========== 数据成果 ========== */
.stats-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(0, 100, 200, 0.1), rgba(0, 200, 255, 0.05));
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-item {
    padding: 30px 20px;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.count-up {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-suffix {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-light);
    margin-left: 4px;
}

.stat-label {
    font-size: 15px;
    color: var(--text-secondary);
}

/* ========== 客户案例 ========== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.case-image {
    position: relative;
    height: 180px;
    overflow: hidden;
    background: linear-gradient(135deg, #1a2a4a, #0d1a30);
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.08);
}

.case-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.case-category-tag {
    position: absolute;
    top: 12px; left: 12px;
    padding: 4px 12px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    font-size: 12px;
    color: #fff;
}

.case-body {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.case-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.case-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.case-metrics {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.case-metric {
    display: flex;
    align-items: center;
    gap: 4px;
}

.metric-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--success);
}

.metric-label {
    font-size: 11px;
    color: var(--text-muted);
}

.metric-trend.up {
    color: var(--success);
    font-size: 12px;
}

.case-link {
    margin-top: auto;
    font-size: 13px;
    color: var(--primary-light);
    font-weight: 500;
    transition: transform 0.3s ease;
}

.case-card:hover .case-link {
    transform: translateX(4px);
}

/* ========== 使用流程 ========== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
}

.process-step {
    position: relative;
    text-align: center;
    padding: 30px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.process-step:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.step-number {
    width: 50px;
    height: 50px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.step-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-arrow { display: none; }

/* ========== 会员权益 ========== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.benefit-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 28px 22px;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.benefit-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.benefit-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.benefit-list li {
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(0, 150, 255, 0.06);
}

.benefit-list li:last-child { border-bottom: none; }

/* ========== 价格对比 ========== */
.price-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
}

.price-market {
    opacity: 0.8;
}

.price-vip {
    position: relative;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.price-card-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 18px;
    background: linear-gradient(135deg, #ff6b6b, #ff9c40);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    white-space: nowrap;
}

.price-card-header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-glow);
}

.price-card-header h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}

.price-card-header p {
    font-size: 14px;
    color: var(--text-muted);
}

.price-list {
    margin-bottom: 20px;
}

.price-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(0, 150, 255, 0.06);
}

.price-list li:last-child { border-bottom: none; }

.price-list-name {
    word-break: break-word;
    padding-right: 10px;
}

.price-list-value {
    font-weight: 600;
    color: var(--text-muted);
    flex-shrink: 0;
}

.price-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-glow);
    font-size: 16px;
    font-weight: 600;
}

.market-total .total-num {
    font-size: 28px;
    color: var(--danger);
    font-weight: 800;
    text-decoration: line-through;
    opacity: 0.7;
}

.vip-price-show {
    text-align: center;
    margin: 20px 0 24px;
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.vip-price-symbol {
    font-size: 20px;
    color: var(--success);
    margin-right: 2px;
}

.vip-price-num {
    font-size: 52px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--success), #60e3a0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.vip-price-period {
    font-size: 16px;
    color: var(--text-muted);
    margin-left: 4px;
}

.member-benefits-list {
    margin-bottom: 24px;
}

.member-benefits-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
    word-break: break-word;
}

.check-icon {
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
}

/* ========== FAQ ========== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

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

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

.faq-question {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 22px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover { background: rgba(0, 153, 255, 0.05); }

.faq-q-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.faq-q-text {
    flex-grow: 1;
    font-size: 15px;
    font-weight: 600;
}

.faq-arrow {
    font-size: 20px;
    color: var(--text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-arrow {
    transform: rotate(45deg);
    color: var(--primary-light);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 22px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 22px 18px 62px;
}

.faq-a-icon { display: none; }

.faq-a-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========== CTA ========== */
.cta-card {
    background: 
        linear-gradient(135deg, rgba(0, 100, 200, 0.3), rgba(0, 180, 255, 0.15)),
        var(--bg-card);
    border: 1px solid var(--border-glow-strong);
    border-radius: var(--radius-xl);
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 0 60px rgba(0, 150, 255, 0.15);
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(0, 200, 255, 0.1) 0%, transparent 50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.cta-content { position: relative; z-index: 1; }

.cta-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.3;
}

.cta-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.cta-trust {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-muted);
}


/* ========== 左侧悬浮侧边导航 ========== */
.side-nav {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: rgba(10, 16, 31, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 153, 255, 0.2);
    border-radius: 50px;
    padding: 12px 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.side-nav-toggle {
    display: none;
    position: fixed;
    left: 15px;
    bottom: 20px;
    z-index: 91;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0099ff, #00ccff);
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 153, 255, 0.4);
    align-items: center;
    justify-content: center;
}

.side-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.side-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 30px;
    cursor: pointer;
    color: #b0c4e0;
    font-size: 13px;
    white-space: nowrap;
    transition: all 0.3s ease;
    overflow: hidden;
    max-width: 40px;
    position: relative;
}

.side-nav:hover .side-nav-item {
    max-width: 200px;
}

.side-nav-item:hover {
    background: rgba(0, 153, 255, 0.1);
    color: #00ccff;
}

.side-nav-item.active {
    background: linear-gradient(135deg, rgba(0, 153, 255, 0.2), rgba(0, 204, 255, 0.1));
    color: #00ccff;
    box-shadow: inset 2px 0 0 #00ccff;
}

.side-nav-icon {
    font-size: 16px;
    flex-shrink: 0;
    width: 18px;
    text-align: center;
    line-height: 1;
}

.side-nav-label {
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.side-nav:hover .side-nav-label {
    opacity: 1;
    pointer-events: auto;
}

.side-nav-top {
    border-top: 1px solid rgba(0, 153, 255, 0.15);
    margin-top: 6px;
    padding-top: 10px;
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .products-grid { grid-template-columns: repeat(3, 1fr); }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
    /* VIP通栏移动端适配：左右两端一行，中间隐藏 */
    .vip-container {
        flex-direction: row !important;
        gap: 16px !important;
        text-align: left !important;
        padding: 0 20px !important;
    }
    .vip-left {
        justify-content: flex-start !important;
        gap: 12px !important;
        flex: 1;
        min-width: 0;
    }
    .vip-icon {
        width: 40px !important;
        height: 40px !important;
        font-size: 20px !important;
        flex-shrink: 0;
    }
    .vip-title {
        font-size: 16px !important;
        margin-bottom: 2px !important;
    }
    .vip-desc {
        font-size: 12px !important;
    }
    /* 手机端隐藏中间权益点/信息卡 */
    .vip-features,
    .vip-member-info {
        display: none !important;
    }
    .vip-btn {
        width: auto !important;
        padding: 10px 20px !important;
        font-size: 13px !important;
        flex-shrink: 0;
        justify-content: center !important;
    }
    
    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }
    
    .hero-section { height: 360px; }
    .hero-title { font-size: 36px; }
    .hero-subtitle { font-size: 16px; }
    .hero-content-overlay { padding-top: 60px; }
    
    /* 手机端侧边导航：隐藏 */
    .side-nav {
        display: none;
    }
    
    .vip-card-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .channel-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .scenes-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    
    .price-grid { grid-template-columns: 1fr; max-width: 450px; }
    
    .vip-status-card {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .vip-status-left { flex-direction: column; text-align: center; }
    .vip-status-right { flex-direction: column; }
}

@media (max-width: 600px) {
    .section { padding: 40px 0; }
    .section-title { font-size: 24px; }
    .section-subtitle { font-size: 14px; }
    
    .hero-section { height: 300px; }
    .hero-title { font-size: 24px; }
    .hero-subtitle { font-size: 13px; margin-bottom: 12px; }
    .hero-buttons { flex-direction: column; gap: 8px; margin-bottom: 10px; }
    .hero-buttons .btn { width: 100%; padding: 10px 20px; font-size: 14px; }
    .hero-badges { gap: 8px; flex-wrap: wrap; justify-content: center; }
    .hero-badge { font-size: 12px; padding: 4px 10px; }
    .hero-content-overlay { padding-top: 40px; }
    .hero-content-overlay .hero-slide-content { max-width: 90%; }
    
    .carousel-arrow { width: 36px; height: 36px; font-size: 20px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
    
    .channel-grid { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-number { font-size: 36px; }
    .process-steps { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    
    .cta-card { padding: 40px 24px; }
    .cta-title { font-size: 24px; }
    .cta-buttons { flex-direction: column; }
    .cta-buttons .btn { width: 100%; }
    
    .vip-card { padding: 28px 22px; }
    .price-num { font-size: 36px; }
    
    /* VIP通栏600px以下微调 */
    .vip-section { padding: 16px 0 !important; }
    .vip-container { padding: 0 16px !important; gap: 10px !important; }
    .vip-left { gap: 8px !important; }
    .vip-icon { width: 32px !important; height: 32px !important; font-size: 16px !important; }
    .vip-title { font-size: 14px !important; }
    .vip-desc { font-size: 11px !important; }
    .vip-btn { padding: 8px 14px !important; font-size: 12px !important; }
    
    .about-stats { grid-template-columns: 1fr 1fr; }
    .about-stat-num { font-size: 26px; }
    
    .cta-trust { gap: 12px; font-size: 12px; }
}