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

body {
    font-family: 'Inter', sans-serif;
    background-color: #ffffff;
    color: #0f172a;
    line-height: 1.5;
    scroll-behavior: smooth;
}

:root {
    --primary-blue: #0a66c2;
    --primary-dark: #054a8c;
    --primary-light: #eef4fc;
    --accent-blue: #2c7be5;
    --gray-light: #f8fafc;
    --gray-border: #e2e8f0;
    --text-muted: #475569;
    --shadow-sm: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 20px 25px -12px rgba(0, 0, 0, 0.08);
    --transition: all 0.25s ease;
}

/* .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2px 24px;
} */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 150px;
}

/* 导航栏 */
.navbar {
    background: white;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    flex-wrap: wrap;
}
.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue) 0%, #0f4c81 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}
.logo p {
    font-size: 0.7rem;
    color: var(--text-muted);
}
.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: #1e293b;
    transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
    color: var(--primary-blue);
}
.btn-outline {
    border: 1px solid var(--primary-blue);
    background: transparent;
    padding: 6px 18px;
    border-radius: 40px;
    color: var(--primary-blue);
    font-weight: 600;
    transition: var(--transition);
}
.btn-outline:hover {
    background: var(--primary-blue);
    color: white;
}

/* Hero */
.hero {
    background: linear-gradient(105deg, #f0f7ff 0%, #ffffff 100%);
    padding: 8rem 0 4rem;
}
.hero-grid {
    display: flex;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}
.hero-content {
    flex: 1;
}
.hero-badge {
    background: rgba(10,102,194,0.1);
    display: inline-block;
    padding: 0.25rem 1rem;
    border-radius: 30px;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}
.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #0b2b42;
}
.hero-content p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 90%;
}
.btn-primary {
    background: var(--primary-blue);
    color: white;
    padding: 0.8rem 1.8rem;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 8px rgba(10,102,194,0.2);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}
.hero-visual {
    flex: 1;
    text-align: center;
}
.hero-visual i {
    font-size: 8rem;
    color: var(--primary-blue);
    opacity: 0.8;
}

/* 通用节 */
section {
    padding: 5rem 0;
}
.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}
.section-sub {
    text-align: center;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 3rem auto;
}

/* 三大承诺卡片 */
.promise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}
.promise-card {
    background: white;
    border-radius: 28px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-border);
    transition: var(--transition);
}
.promise-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.promise-card i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}
.promise-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

/* 生命周期服务 */
.lifecycle-section {
    background: var(--gray-light);
}
.lifecycle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.lifecycle-item {
    background: white;
    border-radius: 28px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--primary-blue);
}
.step-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-blue);
    color: white;
    font-size: 1.6rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 30px;
    margin-bottom: 1.2rem;
}
.lifecycle-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}
.lifecycle-item ul {
    list-style: none;
    padding-left: 0;
}
.lifecycle-item li {
    margin-bottom: 0.5rem;
    padding-left: 1.2rem;
    position: relative;
    color: var(--text-muted);
    font-size: 0.9rem;
}
.lifecycle-item li::before {
    content: "✓";
    color: var(--primary-blue);
    position: absolute;
    left: 0;
    font-weight: bold;
}
.lifecycle-item .advantage {
    margin-top: 0.8rem;
    font-weight: 600;
    color: var(--primary-dark);
}

/* 优势网格 */
.advantages-section {
    background: white;
}
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.adv-card {
    background: var(--gray-light);
    border-radius: 24px;
    padding: 1.8rem;
    transition: var(--transition);
    border: 1px solid var(--gray-border);
}
.adv-card:hover {
    background: white;
    box-shadow: var(--shadow-sm);
}
.adv-card i {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}
.adv-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}
.adv-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 客户成功保障 */
.guarantee-section {
    background: var(--primary-light);
}
.guarantee-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
}
.guarantee-content {
    flex: 1.5;
}
.guarantee-content h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}
.guarantee-content ul {
    list-style: none;
}
.guarantee-content li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
}
.guarantee-content li i {
    width: 28px;
    color: var(--primary-blue);
    font-size: 1.2rem;
}
.guarantee-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}
.stat {
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    text-align: center;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}
.stat span {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-blue);
}

/* 案例摘要 */
.case-summary {
    background: white;
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}
.case-card {
    background: var(--gray-light);
    border-radius: 28px;
    padding: 2rem;
    text-align: center;
}
.case-card i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}
.case-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
}
.more-link {
    text-align: center;
    margin-top: 1rem;
}
.more-link a {
    color: var(--primary-blue);
    font-weight: 600;
    text-decoration: none;
}

/* CTA 区域 */
.cta-block {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    border-radius: 48px;
    text-align: center;
    padding: 3rem 2rem;
    margin: 2rem 0;
    color: white;
}
.cta-block h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}
.cta-button {
    background: white;
    color: var(--primary-blue);
    padding: 0.8rem 2rem;
    border-radius: 40px;
    text-decoration: none;
    display: inline-block;
    font-weight: 700;
    margin: 1rem 0;
    transition: var(--transition);
}
.cta-button:hover {
    background: #f0f7ff;
    transform: translateY(-2px);
}
.trust-badge {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* 页脚 */
footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 3rem 0 2rem;
    margin-top: 2rem;
}
.footer-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
}
.footer-info {
    flex: 2;
}
.footer-info h3 {
    color: white;
    margin-bottom: 0.5rem;
}
.footer-info p {
    margin: 0.5rem 0;
}
.social-icons i {
    font-size: 1.2rem;
    margin-right: 1rem;
    margin-top: 1rem;
    cursor: pointer;
}
.footer-links {
    flex: 1;
    display: flex;
    gap: 2rem;
}
.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 0.5rem;
}
.copyright {
    text-align: center;
    padding-top: 2rem;
    font-size: 0.75rem;
    border-top: 1px solid #1e293b;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 0.8rem;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .hero-grid {
        flex-direction: column;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .guarantee-flex {
        flex-direction: column;
    }
    .guarantee-stats {
        width: 100%;
    }
    .footer-grid {
        flex-direction: column;
    }
}