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

:root {
    --primary-blue: #2563eb;
    --dark-blue: #1e40af;
    --light-blue: #3b82f6;
    --accent-teal: #0891b2;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-light: #e5e7eb;
    --success-green: #10b981;
    --info-cyan: #06b6d4;
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
    line-height: 1.65;
    color: var(--text-primary);
    background: var(--bg-light);
    font-size: 16px;
}

.wrapper {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

.topbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navigation {
    padding: 16px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.brand i {
    color: var(--primary-blue);
    font-size: 26px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.main-menu {
    display: flex;
    list-style: none;
    gap: 4px;
    align-items: center;
}

.main-menu li a {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 6px;
}

.main-menu li a:hover {
    color: var(--primary-blue);
    background: rgba(37, 99, 235, 0.08);
}

.header-action .action-btn {
    background: var(--primary-blue);
    color: var(--bg-white);
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.header-action .action-btn:hover {
    background: var(--dark-blue);
}

.hero-banner {
    background: linear-gradient(to bottom right, #eff6ff, #dbeafe);
    padding: 70px 0 60px;
}

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

.hero-text h1 {
    font-size: 42px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 18px;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.hero-text .lead {
    font-size: 19px;
    color: var(--text-secondary);
    margin-bottom: 14px;
    line-height: 1.6;
}

.hero-text p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 13px 28px;
    border-radius: 7px;
    font-size: 15px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--bg-white);
}

.btn-primary:hover {
    background: var(--dark-blue);
    transform: translateY(-1px);
}

.btn-outline {
    background: var(--bg-white);
    color: var(--primary-blue);
    border: 1px solid var(--border-light);
}

.btn-outline:hover {
    border-color: var(--primary-blue);
    background: rgba(37, 99, 235, 0.05);
}

.hero-visual {
    position: relative;
}

.visual-placeholder {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(8, 145, 178, 0.1));
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    border: 2px dashed var(--border-light);
}

.visual-placeholder i {
    font-size: 80px;
    color: var(--primary-blue);
    opacity: 0.3;
}

.content-block {
    padding: 70px 0;
    background: var(--bg-white);
}

.content-block.alt-bg {
    background: var(--bg-light);
}

.section-head {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-head h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}

.section-head p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.feature-box {
    background: var(--bg-white);
    padding: 32px 26px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.feature-box:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.feature-icon-wrap {
    width: 56px;
    height: 56px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.feature-icon-wrap i {
    font-size: 26px;
    color: var(--primary-blue);
}

.feature-box h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.feature-box p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.65;
}

.info-layout {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.info-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.info-row.reverse {
    direction: rtl;
}

.info-row.reverse > * {
    direction: ltr;
}

.info-text h3 {
    font-size: 30px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

.info-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 14px;
}

.info-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.info-image {
    position: relative;
}

.image-placeholder {
    background: linear-gradient(to bottom right, rgba(37, 99, 235, 0.08), rgba(8, 145, 178, 0.08));
    border-radius: 8px;
    padding: 50px 30px;
    text-align: center;
    border: 1px solid var(--border-light);
}

.image-placeholder i {
    font-size: 60px;
    color: var(--primary-blue);
    opacity: 0.25;
}

.stats-banner {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.stat-box {
    text-align: center;
    color: var(--bg-white);
}

.stat-value {
    font-size: 44px;
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

.stat-desc {
    font-size: 15px;
    opacity: 0.9;
    font-weight: 400;
}

.promo-section {
    padding: 70px 0;
    background: var(--bg-light);
    text-align: center;
}

.promo-content h2 {
    font-size: 34px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.promo-content p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.site-footer {
    background: var(--text-primary);
    padding: 50px 0 20px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-layout {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: var(--bg-white);
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: var(--bg-white);
    margin-bottom: 14px;
}

.footer-brand i {
    color: var(--light-blue);
    font-size: 24px;
}

.footer-section p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.social-row {
    display: flex;
    gap: 10px;
}

.social-row a {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 16px;
}

.social-row a:hover {
    background: var(--light-blue);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-section ul li a:hover {
    color: var(--light-blue);
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
}

.contact-list i {
    color: var(--light-blue);
    width: 18px;
}

.footer-base {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-base p {
    font-size: 13px;
    margin-bottom: 6px;
}

.notice-text {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.text-content {
    padding: 70px 0;
    background: var(--bg-white);
}

.content-container {
    max-width: 820px;
    margin: 0 auto;
}

.content-container h1 {
    font-size: 38px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.content-container h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 40px;
    margin-bottom: 16px;
}

.content-container h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 30px;
    margin-bottom: 12px;
}

.content-container p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 18px;
}

.content-container ul {
    margin: 16px 0;
    padding-left: 24px;
}

.content-container ul li {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 10px;
}

.content-container strong {
    color: var(--text-primary);
    font-weight: 600;
}

.error-page {
    padding: 100px 0;
    text-align: center;
    background: var(--bg-light);
}

.error-box h1 {
    font-size: 100px;
    color: var(--primary-blue);
    font-weight: 700;
    margin-bottom: 12px;
}

.error-box h2 {
    font-size: 32px;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 14px;
}

.error-box p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

@media (max-width: 992px) {
    .main-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--border-light);
    }

    .main-menu.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .header-action {
        display: none;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-text h1 {
        font-size: 34px;
    }

    .footer-layout {
        grid-template-columns: 1fr 1fr;
    }

    .info-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .feature-list {
        grid-template-columns: 1fr;
    }

    .stats-row {
        grid-template-columns: 1fr 1fr;
    }

    .hero-text h1 {
        font-size: 30px;
    }

    .section-head h2 {
        font-size: 28px;
    }

    .content-container h1 {
        font-size: 30px;
    }

    .footer-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .wrapper {
        padding: 0 16px;
    }

    .hero-banner {
        padding: 50px 0 40px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .stats-row {
        grid-template-columns: 1fr;
    }

    .error-box h1 {
        font-size: 70px;
    }
}