:root {
        --primary: #1a56db;
        --primary-dark: #123fa6;
        --primary-light: #e8f0fe;
        --accent: #f97316;
        --accent-light: #fff7ed;
        --text: #1e293b;
        --text-secondary: #64748b;
        --text-light: #94a3b8;
        --bg: #ffffff;
        --bg-gray: #f8fafc;
        --bg-dark: #0f172a;
        --border: #e2e8f0;
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
        --shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
        --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.10), 0 4px 10px rgba(0, 0, 0, 0.08);
        --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.08);
        --radius: 12px;
        --radius-lg: 16px;
        --radius-xl: 20px;
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }

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

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    .container-narrow {
        max-width: 900px;
        margin: 0 auto;
        padding: 0 24px;
    }

    header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid transparent;
        transition: all var(--transition);
        padding: 0;
    }

    header.scrolled {
        border-bottom-color: var(--border);
        box-shadow: var(--shadow-sm);
    }

    header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 14px;
        padding-bottom: 14px;
    }

    .logo-area {
        display: flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        flex-shrink: 0;
    }

    .logo-icon {
        width: 42px;
        height: 42px;
        background: linear-gradient(135deg, #2563eb, #1d4ed8);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: transform var(--transition), box-shadow var(--transition);
    }

    .logo-icon svg {
        width: 24px;
        height: 24px;
    }

    .logo-area:hover .logo-icon {
        transform: scale(1.06);
        box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
    }

    .logo-text {
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--text);
        letter-spacing: -0.02em;
        white-space: nowrap;
    }

    .logo-text span {
        color: var(--primary);
    }

    nav {
        display: flex;
        align-items: center;
        gap: 28px;
    }

    nav a {
        text-decoration: none;
        color: var(--text-secondary);
        font-weight: 500;
        font-size: 0.95rem;
        transition: color var(--transition);
        position: relative;
        white-space: nowrap;
        padding: 4px 0;
    }

    nav a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
        transition: width var(--transition);
    }

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

    nav a:hover::after {
        width: 100%;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        padding: 11px 22px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 0.95rem;
        cursor: pointer;
        text-decoration: none;
        transition: all var(--transition);
        border: none;
        font-family: var(--font-family);
        white-space: nowrap;
        letter-spacing: 0.01em;
    }

    .btn-primary {
        background: linear-gradient(135deg, #2563eb, #1d4ed8);
        color: #fff;
        box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    }

    .btn-primary:hover {
        background: linear-gradient(135deg, #1d4ed8, #163fbb);
        box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
        transform: translateY(-2px);
    }

    .btn-outline {
        background: transparent;
        color: var(--primary);
        border: 2px solid var(--primary);
    }

    .btn-outline:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
    }

    .btn-lg {
        padding: 14px 32px;
        font-size: 1.05rem;
        border-radius: 50px;
    }

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

    .btn-white:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
    }

    .mobile-menu-toggle {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 8px;
        z-index: 1001;
    }

    .mobile-menu-toggle span {
        display: block;
        width: 26px;
        height: 2.5px;
        background: var(--text);
        border-radius: 3px;
        margin: 6px 0;
        transition: all var(--transition);
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .hero-section {
        padding: 80px 0 70px;
        background: linear-gradient(180deg, #f0f5ff 0%, #ffffff 50%, #fafcff 100%);
        position: relative;
        overflow: hidden;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        top: -200px;
        right: -150px;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }

    .hero-section::after {
        content: '';
        position: absolute;
        bottom: -100px;
        left: -100px;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(249, 115, 22, 0.05) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }

    .hero-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 50px;
        align-items: center;
        position: relative;
        z-index: 1;
    }

    .hero-content {
        animation: fadeInUp 0.8s ease-out;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--primary-light);
        color: var(--primary);
        padding: 7px 16px;
        border-radius: 50px;
        font-size: 0.85rem;
        font-weight: 600;
        margin-bottom: 20px;
        letter-spacing: 0.02em;
    }

    .hero-badge .dot {
        width: 8px;
        height: 8px;
        background: #22c55e;
        border-radius: 50%;
        animation: pulse-dot 2s infinite;
    }

    @keyframes pulse-dot {
        0%,
        100% {
            box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
        }
        50% {
            box-shadow: 0 0 0 12px rgba(34, 197, 94, 0);
        }
    }

    .hero-content h1 {
        font-size: 3rem;
        font-weight: 900;
        line-height: 1.2;
        color: var(--text);
        margin-bottom: 18px;
        letter-spacing: -0.03em;
    }

    .hero-content h1 .highlight {
        background: linear-gradient(135deg, #2563eb, #6366f1);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .hero-content .hero-desc {
        font-size: 1.15rem;
        color: var(--text-secondary);
        margin-bottom: 30px;
        line-height: 1.8;
        max-width: 480px;
    }

    .hero-buttons {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
        margin-bottom: 28px;
    }

    .hero-stats-row {
        display: flex;
        gap: 28px;
        flex-wrap: wrap;
    }

    .hero-stat-item {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .hero-stat-num {
        font-size: 1.6rem;
        font-weight: 800;
        color: var(--primary);
        letter-spacing: -0.02em;
    }

    .hero-stat-label {
        font-size: 0.85rem;
        color: var(--text-secondary);
        line-height: 1.3;
    }

    .hero-visual {
        animation: fadeInUp 0.9s ease-out 0.15s both;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .hero-visual-inner {
        position: relative;
        width: 100%;
        max-width: 520px;
    }

    .hero-dashboard-mock {
        width: 100%;
        aspect-ratio: 4/3;
        background: #fff;
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-xl);
        overflow: hidden;
        position: relative;
        border: 1px solid var(--border);
    }

    .hero-dashboard-mock .mock-header {
        height: 44px;
        background: #f1f5f9;
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 0 16px;
    }

    .mock-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
    }
    .mock-dot.red {
        background: #ef4444;
    }
    .mock-dot.yellow {
        background: #f59e0b;
    }
    .mock-dot.green {
        background: #22c55e;
    }

    .mock-body {
        padding: 20px;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .mock-chat-bubble {
        padding: 12px 16px;
        border-radius: 14px;
        font-size: 0.8rem;
        max-width: 75%;
        animation: mockBubbleIn 0.5s ease-out both;
    }
    .mock-chat-bubble.user {
        background: #e8f0fe;
        align-self: flex-end;
        color: #1e40af;
        animation-delay: 0.2s;
    }
    .mock-chat-bubble.ai {
        background: #f1f5f9;
        align-self: flex-start;
        color: #334155;
        animation-delay: 0.5s;
    }
    .mock-chat-bubble.ai:nth-child(3) {
        animation-delay: 0.8s;
    }
    .mock-chat-bubble.user:nth-child(4) {
        animation-delay: 1.1s;
    }
    .mock-chat-bubble.ai:nth-child(5) {
        animation-delay: 1.4s;
    }

    @keyframes mockBubbleIn {
        from {
            opacity: 0;
            transform: translateY(14px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .mock-typing-indicator {
        display: flex;
        gap: 4px;
        padding: 12px 16px;
        align-self: flex-start;
        animation: mockBubbleIn 0.5s ease-out 1.7s both;
    }
    .mock-typing-indicator span {
        width: 7px;
        height: 7px;
        background: #94a3b8;
        border-radius: 50%;
        animation: typingBounce 1.2s infinite;
    }
    .mock-typing-indicator span:nth-child(2) {
        animation-delay: 0.2s;
    }
    .mock-typing-indicator span:nth-child(3) {
        animation-delay: 0.4s;
    }

    @keyframes typingBounce {
        0%,
        60%,
        100% {
            transform: translateY(0);
        }
        30% {
            transform: translateY(-8px);
        }
    }

    .hero-float-card {
        position: absolute;
        background: #fff;
        border-radius: var(--radius);
        box-shadow: var(--shadow-lg);
        padding: 14px 18px;
        font-size: 0.8rem;
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 8px;
        animation: floatAround 5s ease-in-out infinite;
        z-index: 2;
    }
    .hero-float-card.top-right {
        top: -18px;
        right: -10px;
        animation-delay: 0s;
    }
    .hero-float-card.bottom-left {
        bottom: 20px;
        left: -20px;
        animation-delay: 2.5s;
        font-size: 0.75rem;
    }

    @keyframes floatAround {
        0%,
        100% {
            transform: translateY(0);
        }
        25% {
            transform: translateY(-10px);
        }
        50% {
            transform: translateY(-2px);
        }
        75% {
            transform: translateY(-12px);
        }
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .section {
        padding: 80px 0;
    }
    .section-gray {
        background: var(--bg-gray);
    }

    .section-header {
        text-align: center;
        margin-bottom: 50px;
        animation: fadeInUp 0.7s ease-out both;
    }

    .section-header .section-label {
        display: inline-block;
        font-size: 0.85rem;
        font-weight: 700;
        color: var(--primary);
        text-transform: uppercase;
        letter-spacing: 0.08em;
        margin-bottom: 10px;
        background: var(--primary-light);
        padding: 5px 14px;
        border-radius: 50px;
    }

    .section-header h2 {
        font-size: 2.3rem;
        font-weight: 800;
        color: var(--text);
        margin-bottom: 12px;
        letter-spacing: -0.02em;
    }

    .section-header .section-subtitle {
        font-size: 1.05rem;
        color: var(--text-secondary);
        max-width: 600px;
        margin: 0 auto;
    }

    .features-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .feature-card {
        background: #fff;
        border-radius: var(--radius-lg);
        padding: 32px 24px;
        text-align: center;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border);
        transition: all var(--transition);
        animation: fadeInUp 0.7s ease-out both;
        cursor: default;
    }
    .feature-card:nth-child(1) {
        animation-delay: 0.05s;
    }
    .feature-card:nth-child(2) {
        animation-delay: 0.15s;
    }
    .feature-card:nth-child(3) {
        animation-delay: 0.25s;
    }
    .feature-card:nth-child(4) {
        animation-delay: 0.35s;
    }
    .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
        border-color: #cbd5e1;
    }

    .feature-icon-wrap {
        width: 60px;
        height: 60px;
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px;
        font-size: 1.8rem;
        transition: transform var(--transition);
    }
    .feature-card:hover .feature-icon-wrap {
        transform: scale(1.1);
    }
    .fi-blue {
        background: #eff6ff;
        color: #2563eb;
    }
    .fi-orange {
        background: #fff7ed;
        color: #f97316;
    }
    .fi-green {
        background: #f0fdf4;
        color: #16a34a;
    }
    .fi-purple {
        background: #faf5ff;
        color: #7c3aed;
    }

    .feature-card h3 {
        font-size: 1.15rem;
        font-weight: 700;
        margin-bottom: 8px;
        color: var(--text);
    }

    .feature-card p {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.6;
    }

    .products-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }

    .product-card {
        background: #fff;
        border-radius: var(--radius-xl);
        padding: 36px 30px;
        box-shadow: var(--shadow);
        border: 1px solid var(--border);
        transition: all var(--transition);
        display: flex;
        gap: 20px;
        align-items: flex-start;
        animation: fadeInUp 0.7s ease-out both;
        cursor: default;
    }
    .product-card:nth-child(1) {
        animation-delay: 0.05s;
    }
    .product-card:nth-child(2) {
        animation-delay: 0.15s;
    }
    .product-card:nth-child(3) {
        animation-delay: 0.25s;
    }
    .product-card:nth-child(4) {
        animation-delay: 0.35s;
    }
    .product-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-xl);
    }

    .product-icon {
        width: 56px;
        height: 56px;
        border-radius: 14px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.6rem;
    }

    .product-info h3 {
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 6px;
        color: var(--text);
    }
    .product-info p {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 10px;
    }
    .product-tag {
        display: inline-block;
        font-size: 0.75rem;
        font-weight: 600;
        padding: 4px 10px;
        border-radius: 20px;
        background: var(--primary-light);
        color: var(--primary);
    }

    .channels-section {
        padding: 80px 0;
        background: var(--bg-dark);
        color: #fff;
        overflow: hidden;
    }

    .channels-section .section-header h2 {
        color: #fff;
    }
    .channels-section .section-header .section-subtitle {
        color: #cbd5e1;
    }
    .channels-section .section-header .section-label {
        background: rgba(255, 255, 255, 0.12);
        color: #93c5fd;
    }

    .channels-marquee-wrap {
        overflow: hidden;
        padding: 30px 0;
        mask-image: linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%);
        -webkit-mask-image: linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%);
    }

    .channels-track {
        display: flex;
        gap: 20px;
        animation: scrollChannels 30s linear infinite;
        width: max-content;
    }

    @keyframes scrollChannels {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(-50%);
        }
    }

    .channel-chip {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 50px;
        padding: 12px 24px;
        font-weight: 600;
        font-size: 0.9rem;
        white-space: nowrap;
        transition: all var(--transition);
        cursor: default;
        color: #e2e8f0;
    }
    .channel-chip:hover {
        background: rgba(255, 255, 255, 0.16);
        border-color: rgba(255, 255, 255, 0.35);
        color: #fff;
    }

    .stats-bar {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        padding: 50px 0 0;
    }

    .stat-block {
        text-align: center;
        animation: fadeInUp 0.7s ease-out both;
    }
    .stat-block:nth-child(1) {
        animation-delay: 0.1s;
    }
    .stat-block:nth-child(2) {
        animation-delay: 0.2s;
    }
    .stat-block:nth-child(3) {
        animation-delay: 0.3s;
    }
    .stat-block:nth-child(4) {
        animation-delay: 0.4s;
    }

    .stat-number {
        font-size: 2.8rem;
        font-weight: 900;
        letter-spacing: -0.03em;
        background: linear-gradient(135deg, #60a5fa, #93c5fd);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .stat-desc {
        font-size: 0.9rem;
        color: #94a3b8;
        margin-top: 4px;
    }

    .testimonials-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .testimonial-card {
        background: #fff;
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        box-shadow: var(--shadow);
        border: 1px solid var(--border);
        transition: all var(--transition);
        animation: fadeInUp 0.7s ease-out both;
        cursor: default;
    }
    .testimonial-card:nth-child(1) {
        animation-delay: 0.05s;
    }
    .testimonial-card:nth-child(2) {
        animation-delay: 0.15s;
    }
    .testimonial-card:nth-child(3) {
        animation-delay: 0.25s;
    }
    .testimonial-card:nth-child(4) {
        animation-delay: 0.35s;
    }
    .testimonial-card:nth-child(5) {
        animation-delay: 0.45s;
    }
    .testimonial-card:nth-child(6) {
        animation-delay: 0.55s;
    }
    .testimonial-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-xl);
    }

    .testimonial-stars {
        color: #f59e0b;
        font-size: 1rem;
        letter-spacing: 2px;
        margin-bottom: 12px;
    }
    .testimonial-text {
        font-size: 0.95rem;
        color: var(--text);
        line-height: 1.7;
        margin-bottom: 16px;
        font-style: italic;
    }
    .testimonial-author {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .testimonial-avatar {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 0.9rem;
        color: #64748b;
        flex-shrink: 0;
    }
    .testimonial-name {
        font-weight: 700;
        font-size: 0.9rem;
        color: var(--text);
    }
    .testimonial-role {
        font-size: 0.78rem;
        color: var(--text-light);
    }

    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .faq-item {
        background: #fff;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        overflow: hidden;
        transition: all var(--transition);
        animation: fadeInUp 0.6s ease-out both;
    }
    .faq-item:nth-child(1) {
        animation-delay: 0.05s;
    }
    .faq-item:nth-child(2) {
        animation-delay: 0.1s;
    }
    .faq-item:nth-child(3) {
        animation-delay: 0.15s;
    }
    .faq-item:nth-child(4) {
        animation-delay: 0.2s;
    }
    .faq-item:nth-child(5) {
        animation-delay: 0.25s;
    }
    .faq-item:nth-child(6) {
        animation-delay: 0.3s;
    }
    .faq-item:nth-child(7) {
        animation-delay: 0.35s;
    }

    .faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 20px 24px;
        font-size: 1rem;
        font-weight: 600;
        text-align: left;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: var(--text);
        font-family: var(--font-family);
        transition: color var(--transition);
        gap: 16px;
    }
    .faq-question:hover {
        color: var(--primary);
    }
    .faq-icon {
        flex-shrink: 0;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: var(--bg-gray);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all var(--transition);
        font-size: 0.8rem;
        color: var(--text-secondary);
    }
    .faq-item.open .faq-icon {
        background: var(--primary);
        color: #fff;
        transform: rotate(45deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.4s ease;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
    }
    .faq-answer-inner {
        padding: 0 24px 20px;
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    .cta-section {
        padding: 80px 0;
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8, #2563eb);
        color: #fff;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1.2' fill='rgba(255,255,255,0.07)'/%3E%3C/svg%3E");
        pointer-events: none;
    }
    .cta-section .container {
        position: relative;
        z-index: 1;
    }
    .cta-section h2 {
        font-size: 2.4rem;
        font-weight: 900;
        margin-bottom: 14px;
        letter-spacing: -0.02em;
    }
    .cta-section p {
        font-size: 1.1rem;
        color: #bfdbfe;
        margin-bottom: 28px;
        max-width: 550px;
        margin-left: auto;
        margin-right: auto;
    }
    .cta-buttons {
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }

    footer {
        background: var(--bg-dark);
        color: #cbd5e1;
        padding: 50px 0 30px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-col h4 {
        color: #fff;
        font-weight: 700;
        margin-bottom: 16px;
        font-size: 0.95rem;
    }
    .footer-col a {
        display: block;
        color: #94a3b8;
        text-decoration: none;
        font-size: 0.85rem;
        margin-bottom: 8px;
        transition: color var(--transition);
    }
    .footer-col a:hover {
        color: #fff;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 24px;
        text-align: center;
        font-size: 0.82rem;
        color: #64748b;
    }

    @media (max-width: 1024px) {
        .features-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .products-grid {
            grid-template-columns: 1fr 1fr;
        }
        .testimonials-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .hero-grid {
            grid-template-columns: 1fr;
            gap: 30px;
        }
        .hero-visual {
            order: -1;
        }
        .hero-content h1 {
            font-size: 2.3rem;
        }
        .stats-bar {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 768px) {
        nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: #fff;
            flex-direction: column;
            padding: 80px 28px 30px;
            gap: 20px;
            box-shadow: var(--shadow-xl);
            transition: right var(--transition);
            z-index: 999;
        }
        nav.active {
            right: 0;
        }
        .mobile-menu-toggle {
            display: block;
        }
        .features-grid {
            grid-template-columns: 1fr;
        }
        .products-grid {
            grid-template-columns: 1fr;
        }
        .testimonials-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .hero-content h1 {
            font-size: 1.9rem;
        }
        .hero-section {
            padding: 50px 0 40px;
        }
        .section {
            padding: 50px 0;
        }
        .section-header h2 {
            font-size: 1.7rem;
        }
        .stats-bar {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .stat-number {
            font-size: 2rem;
        }
        .hero-float-card.top-right {
            top: -5px;
            right: 0;
            font-size: 0.7rem;
            padding: 10px 12px;
        }
        .hero-float-card.bottom-left {
            bottom: 8px;
            left: 0;
            font-size: 0.7rem;
            padding: 10px 12px;
        }
        .hero-buttons {
            flex-direction: column;
        }
        .hero-stats-row {
            gap: 16px;
        }
    }

    @media (max-width: 480px) {
        .hero-content h1 {
            font-size: 1.6rem;
        }
        .hero-desc {
            font-size: 0.95rem;
        }
        .btn-lg {
            padding: 12px 22px;
            font-size: 0.9rem;
        }
        .stats-bar {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .stat-number {
            font-size: 1.6rem;
        }
    }


/* ---- subpages & daily update ---- */
.page-hero {
    padding: 60px 0 40px;
    background: linear-gradient(180deg, #e8f0fe 0%, #ffffff 100%);
}
.page-hero .breadcrumb {
    font-size: 0.88rem;
    color: var(--text-light);
    margin-bottom: 16px;
}
.page-hero .breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}
.page-hero h1 {
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.page-hero p {
    color: var(--text-secondary);
    max-width: 680px;
    font-size: 1.05rem;
}
.download-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
    margin-bottom: 40px;
}
.download-box h2 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}
.download-box p {
    color: var(--text-secondary);
    margin-bottom: 22px;
}
.download-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
    font-size: 0.88rem;
    color: var(--text-light);
}
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.step {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}
.step-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 12px;
}
.step h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}
.step p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.news-section {
    padding: 80px 0;
    background: var(--bg-gray);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: box-shadow var(--transition), transform var(--transition);
}
.news-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.news-cover {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.news-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.4;
}
.news-card h3 a {
    color: var(--text);
    text-decoration: none;
}
.news-card h3 a:hover {
    color: var(--primary);
}
.news-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
}
.news-meta {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 12px;
}
.news-card .read-more {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
}
.daily-update-block {
    background: linear-gradient(135deg, #eff6ff, #fff);
    border: 1px solid #bfdbfe;
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 32px;
}
.daily-update-block .daily-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.daily-update-block h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}
.daily-update-block p {
    color: var(--text-secondary);
    margin-bottom: 14px;
}
.daily-update-block .read-more {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 36px;
    padding: 40px 0 80px;
}
.article-main h1 {
    font-size: 1.9rem;
    font-weight: 900;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.article-info {
    font-size: 0.88rem;
    color: var(--text-light);
    margin-bottom: 24px;
}
.article-content h2 {
    font-size: 1.25rem;
    margin: 28px 0 12px;
}
.article-content p,
.article-content li {
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-size: 0.98rem;
}
.article-content ul {
    padding-left: 1.2em;
    margin-bottom: 16px;
}
.article-content a {
    color: var(--primary);
}
.daily-stamp {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--primary);
    background: var(--primary-light);
    padding: 6px 12px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.sidebar .side-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 18px;
}
.sidebar .side-box h3 {
    font-size: 1rem;
    margin-bottom: 12px;
}
.sidebar .side-box a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 8px;
}
.sidebar .side-box a:hover {
    color: var(--primary);
}
.sitemap-list {
    list-style: none;
    padding: 0 0 60px;
}
.sitemap-list h2 {
    font-size: 1.25rem;
    margin: 28px 0 12px;
    color: var(--text);
}
.sitemap-list h2:first-child {
    margin-top: 0;
}
.sitemap-list ul {
    list-style: none;
    padding: 0;
    margin: 0 0 8px;
}
.sitemap-list li {
    margin-bottom: 10px;
}
.sitemap-list a {
    color: var(--primary);
    text-decoration: none;
    font-size: 1rem;
}
.sitemap-list a:hover {
    text-decoration: underline;
}
.daily-label {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 8px;
}
[data-daily-update] h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}
[data-daily-update] p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}
[data-daily-update] .read-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}
@media (max-width: 768px) {
    #reasons .features-grid {
        grid-template-columns: 1fr !important;
    }
}
.btn-white {
    background: #fff;
    color: var(--primary);
}
.btn-white:hover {
    background: #f1f5f9;
}
nav a.active {
    color: var(--primary);
}
@media (max-width: 1024px) {
    .news-grid,
    .steps {
        grid-template-columns: 1fr;
    }
    .article-layout {
        grid-template-columns: 1fr;
    }
}