/* ============================================================
   SmartCS Light Theme — 明亮科技风
   从设计稿 style.css 提取，整合为 WordPress 主题样式
   ============================================================ */

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-subtle: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
    --gradient-text: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-blue: #3b82f6;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-white: #ffffff;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

/* ---- Layout ---- */
.smartcs-light {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}
.smartcs-light .page-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
}
.smartcs-light .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Navigation ---- */
.smartcs-light .navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    padding: 0 32px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
}
.smartcs-light .nav-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.smartcs-light .logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 14px;
}
.smartcs-light .brand-name {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.smartcs-light .nav-center {
    display: flex;
    align-items: center;
    gap: 4px;
}
.smartcs-light .nav-item {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}
.smartcs-light .nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}
.smartcs-light .nav-item.active {
    color: var(--accent-primary);
    background: var(--gradient-subtle);
}
.smartcs-light .nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}
.smartcs-light .nav-btn {
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.smartcs-light .nav-btn-outline {
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
}
.smartcs-light .nav-btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.smartcs-light .nav-btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}
.smartcs-light .nav-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99,102,241,0.4);
    color: white;
}

/* ---- Section Shared ---- */
.smartcs-light .section {
    padding: 100px 0;
}
.smartcs-light .section-header {
    text-align: center;
    margin-bottom: 60px;
}
.smartcs-light .section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: var(--gradient-subtle);
    border-radius: var(--radius-full);
    color: var(--accent-primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}
.smartcs-light .section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}
.smartcs-light .section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---- Hero ---- */
.smartcs-light .hero {
    padding: 160px 0 80px;
    position: relative;
    overflow: hidden;
}
.smartcs-light .hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.smartcs-light .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--radius-full);
    color: var(--accent-primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}
.smartcs-light .hero-badge svg {
    width: 16px;
    height: 16px;
    fill: #f59e0b;
}
.smartcs-light .hero-title {
    font-size: 52px;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
}
.smartcs-light .hero-title span {
    display: block;
    font-size: 24px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: 16px;
    letter-spacing: 0;
    background: none;
    -webkit-text-fill-color: var(--text-secondary);
}
.smartcs-light .hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 40px;
    line-height: 1.7;
}
.smartcs-light .hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 60px;
}
.smartcs-light .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}
.smartcs-light .btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}
.smartcs-light .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99,102,241,0.4);
    color: white;
}
.smartcs-light .btn-secondary {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
}
.smartcs-light .btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.smartcs-light .btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* ---- Hero Visual (Chat Demo) ---- */
.smartcs-light .hero-visual {
    width: 100%;
    max-width: 700px;
}
.smartcs-light .hero-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-xl), var(--shadow-glow, 0 0 40px rgba(99,102,241,0.08));
    text-align: left;
}
.smartcs-light .chat-demo {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.smartcs-light .chat-message {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.smartcs-light .chat-message.ai {
    justify-content: flex-start;
}
.smartcs-light .chat-message.user {
    justify-content: flex-end;
    flex-direction: row-reverse;
}
.smartcs-light .chat-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}
.smartcs-light .chat-avatar.ai {
    background: var(--gradient-primary);
    color: white;
}
.smartcs-light .chat-avatar.user-avatar {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}
.smartcs-light .chat-bubble {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    line-height: 1.6;
    max-width: 85%;
}
.smartcs-light .chat-message.ai .chat-bubble {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}
.smartcs-light .chat-message.user .chat-bubble {
    background: var(--gradient-primary);
    color: white;
    border-bottom-right-radius: 4px;
}

/* ---- Features Grid ---- */
.smartcs-light .features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.smartcs-light .feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
}
.smartcs-light .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(99,102,241,0.2);
}
.smartcs-light .feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.smartcs-light .feature-icon.purple { background: var(--gradient-subtle); color: var(--accent-primary); }
.smartcs-light .feature-icon.cyan { background: linear-gradient(135deg, #ecfeff 0%, #cffafe 100%); color: var(--accent-cyan); }
.smartcs-light .feature-icon.green { background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%); color: var(--accent-success); }
.smartcs-light .feature-icon.blue { background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%); color: var(--accent-blue); }
.smartcs-light .feature-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}
.smartcs-light .feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---- Features Dual Column ---- */
.smartcs-light .features-dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.smartcs-light .features-column {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}
.smartcs-light .features-column-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}
.smartcs-light .features-column-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}
.smartcs-light .features-column-title {
    font-size: 20px;
    font-weight: 700;
}
.smartcs-light .features-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.smartcs-light .feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.smartcs-light .feature-item-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-primary);
}
.smartcs-light .feature-item-content h4 {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--text-primary);
}
.smartcs-light .feature-item-content p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* ---- Pricing ---- */
.smartcs-light .pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}
.smartcs-light .pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
}
.smartcs-light .pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.smartcs-light .pricing-card.featured {
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 0 1px rgba(99,102,241,0.1), var(--shadow-xl);
    transform: scale(1.05);
}
.smartcs-light .pricing-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}
.smartcs-light .pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: var(--radius-full);
}
.smartcs-light .pricing-header {
    margin-bottom: 28px;
}
.smartcs-light .pricing-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}
.smartcs-light .pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
    margin-bottom: 8px;
}
.smartcs-light .pricing-currency {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-secondary);
}
.smartcs-light .pricing-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
}
.smartcs-light .pricing-period {
    font-size: 16px;
    color: var(--text-muted);
}
.smartcs-light .pricing-desc {
    font-size: 14px;
    color: var(--text-secondary);
}
.smartcs-light .pricing-features {
    text-align: left;
    margin-bottom: 28px;
}
.smartcs-light .pricing-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
    color: var(--text-secondary);
}
.smartcs-light .pricing-feature:last-child {
    border-bottom: none;
}
.smartcs-light .pricing-feature svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--accent-success);
    stroke: var(--accent-success);
    fill: none;
}
.smartcs-light .pricing-btn {
    display: block;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}
.smartcs-light .pricing-btn-outline {
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
}
.smartcs-light .pricing-btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.smartcs-light .pricing-btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}
.smartcs-light .pricing-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99,102,241,0.4);
    color: white;
}

/* ---- Features Page: Detail List ---- */
.smartcs-light .features-detail-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.smartcs-light .features-detail-item {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all 0.3s;
}
.smartcs-light .features-detail-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(99,102,241,0.2);
}
.smartcs-light .features-detail-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-primary);
}
.smartcs-light .features-detail-content {
    flex: 1;
}
.smartcs-light .features-detail-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 12px;
    color: var(--text-primary);
}
.smartcs-light .features-detail-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}
.smartcs-light .features-detail-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
}
.smartcs-light .features-detail-tag {
    padding: 4px 12px;
    background: var(--gradient-subtle);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-primary);
}

/* ---- About Page ---- */
.smartcs-light .about-mission {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}
.smartcs-light .about-mission h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.smartcs-light .about-mission p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 650px;
    margin: 0 auto;
}
.smartcs-light .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}
.smartcs-light .stat-item {
    text-align: center;
    padding: 32px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}
.smartcs-light .stat-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.smartcs-light .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}
.smartcs-light .values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.smartcs-light .value-card {
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s;
}
.smartcs-light .value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.smartcs-light .value-card .feature-icon {
    margin-bottom: 20px;
}

/* ---- Contact Section ---- */
.smartcs-light .contact-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 60px;
    text-align: center;
}
.smartcs-light .contact-section h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}
.smartcs-light .contact-section p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* ---- Footer ---- */
.smartcs-light .footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 0;
}
.smartcs-light .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.smartcs-light .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.smartcs-light .footer-logo span {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.smartcs-light .footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}
.smartcs-light .footer-social {
    display: flex;
    gap: 12px;
}
.smartcs-light .footer-social a {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all 0.2s;
}
.smartcs-light .footer-social a:hover {
    background: var(--accent-primary);
    color: white;
}
.smartcs-light .footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.smartcs-light .footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.smartcs-light .footer-links a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}
.smartcs-light .footer-links a:hover {
    color: var(--accent-primary);
}
.smartcs-light .footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.smartcs-light .footer-copyright {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}
.smartcs-light .footer-legal {
    display: flex;
    gap: 20px;
}
.smartcs-light .footer-legal a {
    font-size: 13px;
    color: var(--text-muted);
    text-decoration: none;
}
.smartcs-light .footer-legal a:hover {
    color: var(--accent-primary);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .smartcs-light .features-grid { grid-template-columns: repeat(2, 1fr); }
    .smartcs-light .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .smartcs-light .values-grid { grid-template-columns: repeat(2, 1fr); }
    .smartcs-light .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 782px) {
    .smartcs-light .hero-title { font-size: 36px; }
    .smartcs-light .hero-title span { font-size: 18px; }
    .smartcs-light .hero { padding: 120px 0 60px; }
    .smartcs-light .section { padding: 60px 0; }
    .smartcs-light .section-title { font-size: 28px; }
    .smartcs-light .features-grid { grid-template-columns: 1fr; }
    .smartcs-light .features-dual { grid-template-columns: 1fr; }
    .smartcs-light .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
    .smartcs-light .pricing-card.featured { transform: none; }
    .smartcs-light .pricing-card.featured:hover { transform: translateY(-4px); }
    .smartcs-light .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .smartcs-light .values-grid { grid-template-columns: 1fr; }
    .smartcs-light .features-detail-item { flex-direction: column; }
    .smartcs-light .footer-grid { grid-template-columns: 1fr; }
    .smartcs-light .footer-bottom { flex-direction: column; text-align: center; }
    .smartcs-light .nav-center { display: none; }
    .smartcs-light .contact-section { padding: 40px 24px; }
}