*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
:root {
    --brand: #00BEBD;
    --brand-dark: #009B9A;
    --brand-light: #E6F8F8;
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--slate-50);
    color: var(--slate-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a {
    text-decoration: none;
    color: inherit;
}
ul {
    list-style: none;
}

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header (与首页保持完全统一) */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--slate-100);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.header-inner {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-box {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--brand);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(0, 190, 189, 0.3);
}
.logo-text span:first-child {
    font-size: 18px;
    font-weight: 900;
    color: var(--slate-900);
    letter-spacing: -0.5px;
    display: block;
}
.logo-text span:last-child {
    font-size: 11px;
    color: var(--slate-400);
    font-weight: 500;
    display: block;
}
.nav-links {
    display: flex;
    gap: 32px;
    font-size: 15px;
    font-weight: 500;
    color: var(--slate-700);
}
.nav-links a:hover, .nav-links a.active {
    color: var(--brand);
    transition: color 0.2s;
}
.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--slate-700);
    cursor: pointer;
    padding: 8px;
}
.mobile-menu {
    display: none;
    background: white;
    border-bottom: 1px solid var(--slate-100);
    padding: 12px 20px;
}
.mobile-menu a {
    display: block;
    padding: 10px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--slate-700);
    border-bottom: 1px solid var(--slate-50);
}
.mobile-menu a:hover {
    color: var(--brand);
}

/* Hero Banner */
.page-hero {
    background: var(--slate-900);
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 190, 189, 0.12) 0%, transparent 100%);
    pointer-events: none;
}
.breadcrumb {
    font-size: 13px;
    color: var(--slate-400);
    margin-bottom: 16px;
}
.breadcrumb a:hover {
    color: var(--brand);
}
.page-hero h1 {
    font-size: 40px;
    font-weight: 900;
    margin-bottom: 16px;
    letter-spacing: -1px;
}
.page-hero p {
    font-size: 16px;
    color: #cbd5e1;
    max-width: 700px;
    line-height: 1.7;
}

/* Single Page Content Sections */
.content-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--slate-200);
}
.content-section:nth-child(even) {
    background: white;
}
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px auto;
}
.section-tag {
    display: inline-block;
    background: var(--brand-light);
    color: var(--brand);
    font-size: 12px;
    font-weight: bold;
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.section-header h2 {
    font-size: 30px;
    font-weight: 900;
    color: var(--slate-900);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.section-header p {
    font-size: 15px;
    color: var(--slate-600);
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.card {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}
.content-section:nth-child(even) .card {
    background: var(--slate-50);
}
.card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 190, 189, 0.4);
    box-shadow: 0 12px 30px rgba(0,0,0,0.06);
}
.card-icon {
    width: 48px;
    height: 48px;
    background: var(--brand-light);
    color: var(--brand);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}
.card h3 {
    font-size: 18px;
    font-weight: bold;
    color: var(--slate-900);
    margin-bottom: 12px;
}
.card p {
    font-size: 14px;
    color: var(--slate-600);
    line-height: 1.6;
}

/* Contact Strip */
.contact-strip {
    background: var(--slate-900);
    color: white;
    padding: 40px 0;
    border-top: 1px solid var(--slate-800);
}
.contact-strip-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.contact-strip h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 4px;
}
.contact-strip p {
    font-size: 13px;
    color: var(--slate-400);
}
.contact-info-list {
    display: flex;
    gap: 24px;
    font-size: 14px;
}
.contact-info-list div {
    display: flex;
    align-items: center;
    gap: 8px;
}
.contact-info-list span {
    color: var(--brand);
}

/* Footer */
footer {
    background: var(--slate-950);
    color: var(--slate-500);
    padding: 30px 0;
    border-top: 1px solid var(--slate-900);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    flex-wrap: wrap;
    gap: 15px;
}
.footer-brand {
    color: #cbd5e1;
    font-weight: bold;
}
.footer-links {
    display: flex;
    gap: 20px;
}
.footer-links a:hover {
    color: var(--brand);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .grid-3, .grid-2 {
grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .nav-links {
display: none;
    }
    .menu-btn {
display: block;
    }
    .page-hero h1 {
font-size: 28px;
    }
    .contact-strip-inner {
flex-direction: column;
text-align: center;
    }
    .contact-info-list {
flex-direction: column;
gap: 10px;
    }
}