/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
    color: #1f2937;
    line-height: 1.7;
    background: #ffffff;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

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

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid #e5e7eb;
    z-index: 100;
}

.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 1px;
    border-radius: 6px;
}

.brand-text .brand-cn {
    font-size: 18px;
    font-weight: 700;
    color: #1e3a8a;
    line-height: 1.2;
}

.brand-text .brand-en {
    font-size: 10px;
    color: #6b7280;
    letter-spacing: 2px;
    line-height: 1.2;
    margin-top: 2px;
}

.main-nav {
    display: flex;
    gap: 36px;
}

.main-nav a {
    font-size: 15px;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
    padding: 6px 0;
}

.main-nav a:hover {
    color: #1e3a8a;
}

.main-nav a.active {
    color: #1e3a8a;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: #1e3a8a;
    border-radius: 1px;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    color: #fff;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0f1f4a 0%, #1e3a8a 45%, #2563eb 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 100px 24px;
    max-width: 1200px;
}

.hero-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    font-size: 12px;
    letter-spacing: 3px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.hero-sub {
    font-size: 18px;
    line-height: 1.7;
    opacity: 0.85;
    max-width: 640px;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 13px 32px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.25s;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: #fff;
    color: #1e3a8a;
}

.btn-primary:hover {
    background: #f3f4f6;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-ghost {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

/* ===== Stats ===== */
.stats {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 0;
}

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

.stat-item {
    padding: 36px 24px;
    text-align: center;
    border-right: 1px solid #e5e7eb;
}

.stat-item:last-child {
    border-right: none;
}

.stat-num {
    font-size: 36px;
    font-weight: 700;
    color: #1e3a8a;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: #6b7280;
}

/* ===== Section ===== */
.section {
    padding: 90px 0;
}

.section-gray {
    background: #f9fafb;
}

.section-head {
    text-align: center;
    margin-bottom: 60px;
}

.section-head h2 {
    font-size: 36px;
    color: #1e3a8a;
    margin-bottom: 12px;
    font-weight: 700;
}

.section-head p {
    color: #6b7280;
    font-size: 16px;
}

/* ===== Feature Cards ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 36px 28px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(30, 58, 138, 0.1);
    border-color: #c7d2fe;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #1e3a8a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 18px;
    color: #1e3a8a;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.6;
}

/* ===== Business Grid ===== */
.biz-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.biz-card {
    background: #fff;
    border-radius: 8px;
    padding: 40px 28px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.biz-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #1e3a8a 0%, #2563eb 100%);
    opacity: 0;
    transition: opacity 0.3s;
}

.biz-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(30, 58, 138, 0.12);
}

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

.biz-num {
    font-size: 14px;
    color: #2563eb;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.biz-card h3 {
    font-size: 20px;
    color: #1e3a8a;
    margin-bottom: 12px;
}

.biz-card p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.6;
}

/* ===== Page Banner (sub pages) ===== */
.page-banner {
    background: linear-gradient(135deg, #0f1f4a 0%, #1e3a8a 100%);
    color: #fff;
    padding: 100px 0 80px;
    text-align: center;
}

.page-banner h1 {
    font-size: 42px;
    margin-bottom: 8px;
    font-weight: 700;
}

.page-banner p {
    font-size: 14px;
    letter-spacing: 4px;
    opacity: 0.7;
}

/* ===== About Page ===== */
.about-content {
    max-width: 880px;
    margin: 0 auto;
}

.about-content p {
    font-size: 16px;
    color: #374151;
    margin-bottom: 18px;
    line-height: 1.9;
}

.block-title {
    font-size: 26px;
    color: #1e3a8a;
    margin: 50px 0 20px;
    padding-left: 14px;
    border-left: 4px solid #2563eb;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.value-item {
    background: #f9fafb;
    border-radius: 8px;
    padding: 24px;
    border-left: 3px solid #2563eb;
}

.value-item h3 {
    color: #1e3a8a;
    margin-bottom: 8px;
    font-size: 18px;
}

.value-item p {
    color: #6b7280;
    font-size: 14px;
    margin: 0;
}

/* ===== Business List ===== */
.biz-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.biz-row {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 36px 40px;
    transition: all 0.3s;
}

.biz-row:hover {
    box-shadow: 0 8px 24px rgba(30, 58, 138, 0.08);
    border-color: #c7d2fe;
}

.biz-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.biz-info .biz-tag {
    margin-bottom: 0;
    font-size: 13px;
}

.biz-info h2 {
    color: #1e3a8a;
    font-size: 24px;
}

.biz-info p {
    color: #6b7280;
    font-size: 15px;
    line-height: 1.8;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.contact-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 40px 28px;
    text-align: center;
    transition: all 0.3s;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(30, 58, 138, 0.1);
    border-color: #c7d2fe;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #1e3a8a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px;
}

.contact-card h3 {
    color: #1e3a8a;
    margin-bottom: 12px;
    font-size: 18px;
}

.contact-card p {
    color: #4b5563;
    font-size: 15px;
    margin: 4px 0;
}

.contact-card .muted {
    color: #9ca3af;
    font-size: 13px;
}

.contact-cta {
    text-align: center;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #fff;
    border-radius: 12px;
    padding: 60px 40px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-cta h2 {
    font-size: 30px;
    margin-bottom: 14px;
}

.contact-cta p {
    font-size: 15px;
    opacity: 0.9;
    max-width: 560px;
    margin: 0 auto;
}

/* ===== CTA Strip ===== */
.cta {
    background: #f9fafb;
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 32px;
    color: #1e3a8a;
    margin-bottom: 14px;
}

.cta p {
    color: #6b7280;
    margin-bottom: 32px;
    font-size: 16px;
}

/* ===== Footer ===== */
.site-footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #1e293b;
}

.footer-brand {
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 14px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
}

.footer-col h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 18px;
    font-weight: 500;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 10px;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-col p {
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: #64748b;
}

.footer-bottom p {
    margin: 4px 0;
}

.footer-bottom a {
    color: #94a3b8;
    transition: color 0.2s;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .feature-grid,
    .biz-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-wrap {
        flex-direction: column;
        height: auto;
        padding: 16px 24px;
        gap: 12px;
    }

    .main-nav {
        gap: 18px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-sub {
        font-size: 15px;
    }

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

    .stat-item:nth-child(2) {
        border-right: none;
    }

    .stat-item {
        border-bottom: 1px solid #e5e7eb;
    }

    .feature-grid,
    .biz-grid,
    .value-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 60px 0;
    }

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

    .page-banner {
        padding: 60px 0 50px;
    }

    .page-banner h1 {
        font-size: 30px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}