/* ===== 基础样式 & 变量 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a56db;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --gradient: linear-gradient(135deg, #1a56db 0%, #0e7490 100%);
    --gradient-dark: linear-gradient(135deg, #1e3a8a 0%, #164e63 100%);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* ===== 导航栏 ===== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.75rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-icon {
    font-size: 1.6rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: rgba(26, 86, 219, 0.06);
}

.nav-links .nav-cta {
    background: var(--gradient);
    color: white !important;
    padding: 0.5rem 1.25rem;
    border-radius: 25px;
    margin-left: 0.5rem;
}

.nav-links .nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* 移动端菜单按钮 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-toggle span {
    width: 24px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== 英雄区域 ===== */
.hero {
    position: relative;
    padding: 160px 24px 120px;
    overflow: hidden;
    background: var(--gradient-dark);
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.02); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.4rem 1.2rem;
    border-radius: 25px;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    letter-spacing: 0.5px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.hero .subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    opacity: 0.95;
    margin-bottom: 1rem;
    font-weight: 300;
}

.hero .tagline {
    font-size: clamp(0.9rem, 1.5vw, 1.05rem);
    opacity: 0.8;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.cta-button.primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.cta-button.primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.45);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    opacity: 0.8;
}

.hero-trust > span:first-child {
    opacity: 0.7;
}

.trust-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* ===== Section通用 ===== */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-tag {
    display: inline-block;
    background: rgba(26, 86, 219, 0.08);
    color: var(--primary);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 1.0rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

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

/* ===== 服务区域 ===== */
.services {
    padding: 100px 24px;
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.service-card.featured {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, rgba(26, 86, 219, 0.02) 0%, rgba(6, 182, 212, 0.02) 100%);
}

.service-card.featured::before {
    opacity: 1;
}

.card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient);
    color: white;
    padding: 0.2rem 0.7rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.service-icon {
    width: 48px;
    height: 48px;
    background: rgba(26, 86, 219, 0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--primary);
}

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

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.service-details {
    list-style: none;
    font-size: 0.88rem;
    line-height: 2;
    color: var(--text-secondary);
}

.service-details li {
    position: relative;
    padding-left: 1.25rem;
}

.service-details li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

/* ===== 合作伙伴 ===== */
.partners {
    padding: 100px 24px;
    background: var(--bg-white);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.partner-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.partner-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.partner-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.partner-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===== 一体化方案 ===== */
.solutions {
    padding: 100px 24px;
    background: var(--bg-light);
}

.solution-box {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 3rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.solution-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.solution-top h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.solution-badge {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #92400e;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.solution-components {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.component {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-light);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    min-width: 130px;
    transition: var(--transition);
}

.component:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow);
}

.component .component-icon {
    width: 40px;
    height: 40px;
    background: rgba(6, 182, 212, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.component .component-icon svg {
    width: 20px;
    height: 20px;
}

.component-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.component-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.component-plus {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-weight: 300;
}

.solution-benefits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: var(--radius);
}

.benefit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.benefit-icon {
    font-size: 1.1rem;
}

.cooperation-modes {
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}

.cooperation-modes h4 {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.modes-list {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

.mode-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mode-icon {
    font-size: 2rem;
}

.mode-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.mode-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== 关于我们 ===== */
.about {
    padding: 100px 24px;
    background: var(--bg-white);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stat {
    background: var(--bg-light);
    padding: 2rem 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.25rem;
    line-height: 1.2;
}

.stat-suffix {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.feature {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.feature-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(26, 86, 219, 0.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.feature-icon svg {
    width: 22px;
    height: 22px;
}

.feature h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.feature p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===== 联系区域 ===== */
.contact {
    padding: 100px 24px;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.contact-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.contact-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(26, 86, 219, 0.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-item h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.15rem;
}

.contact-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.contact-tip {
    background: rgba(26, 86, 219, 0.04);
    border-radius: var(--radius);
    padding: 1.25rem;
    border: 1px solid rgba(26, 86, 219, 0.1);
}

.contact-tip p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.contact-tip p:last-child {
    margin-bottom: 0;
}

/* 表单样式 */
.contact-form {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-white);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.submit-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient);
    color: white;
    border: none;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    justify-content: center;
}

.submit-button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 4rem 24px 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: white;
}

.footer-brand p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

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

.footer-links li {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0.6rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: rgba(255, 255, 255, 0.9);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ===== 动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .solution-benefits {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 300px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 0.5rem;
        box-shadow: var(--shadow-xl);
        transition: right 0.3s ease;
        z-index: 1000;
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links a {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }

    .nav-links .nav-cta {
        margin-left: 0;
        text-align: center;
        margin-top: 1rem;
    }

    .hero {
        padding: 140px 24px 80px;
        min-height: auto;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

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

    .solution-components {
        gap: 0.5rem;
    }

    .component {
        min-width: 100px;
        padding: 1rem;
    }

    .component-plus {
        display: none;
    }

    .solution-benefits {
        grid-template-columns: 1fr;
    }

    .modes-list {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-trust {
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .partners-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .stat {
        padding: 1.5rem 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .solution-box {
        padding: 1.5rem;
    }
}