/* ==================== Core Page Styles ==================== */
.container { max-width: 1400px; margin: 0 auto; padding: 0 24px; }

/* Hero Banner - enhanced */
.core-hero {
    position: relative;
    height: 560px;
    margin-top: 70px;
    overflow: hidden;
    background: #0a1a3a;
    display: flex;
    align-items: center;
}
.core-hero-bg {
    position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(135deg, #0a1a3a 0%, #1a3a6e 50%, #0d2a5e 100%);
}
.core-hero-bg::before {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(circle at 80% 20%, rgba(24, 144, 255, 0.35) 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(0, 200, 255, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(120, 80, 255, 0.15) 0%, transparent 60%);
}
.core-hero-bg::after {
    content: ""; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
}
.core-hero-inner {
    position: relative; z-index: 2;
    width: 100%;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
    color: #fff;
}
.core-hero-text .h1-title {
    font-size: 48px; font-weight: 700; line-height: 1.2;
    margin-bottom: 16px;
}
.core-hero-text .h1-en {
    display: inline-block;
    font-size: 14px; color: #1890ff;
    letter-spacing: 4px; font-weight: 600;
    margin-bottom: 16px;
    padding: 4px 12px;
    border: 1px solid rgba(24, 144, 255, 0.4);
    border-radius: 20px;
    background: rgba(24, 144, 255, 0.1);
}
.core-hero-text .h1-desc {
    font-size: 16px; color: rgba(255, 255, 255, 0.75);
    line-height: 1.8; margin-bottom: 28px; max-width: 560px;
}
.core-hero-text .h1-actions {
    display: flex; gap: 16px; flex-wrap: wrap;
}
.btn-primary, .btn-ghost {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: 30px;
    font-size: 14px; font-weight: 500;
    transition: all 0.3s ease; cursor: pointer;
}
.btn-primary {
    background: #1890ff; color: #fff; border: none;
}
.btn-primary:hover {
    background: #096dd9; transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(24, 144, 255, 0.4);
}
.btn-ghost {
    background: transparent; color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
}

/* Hero visual - floating tech cards */
.core-hero-visual {
    position: relative;
    height: 400px;
}
.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 20px;
    color: #fff;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: all 0.4s ease;
}
.floating-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(24, 144, 255, 0.5);
}
.fc-1 {
    top: 20px; left: 0; width: 200px;
    animation: floatA 6s ease-in-out infinite;
}
.fc-2 {
    top: 80px; right: 0; width: 220px;
    animation: floatB 7s ease-in-out infinite;
}
.fc-3 {
    bottom: 60px; left: 40px; width: 230px;
    animation: floatA 8s ease-in-out infinite reverse;
}
.fc-4 {
    bottom: 0; right: 30px; width: 180px;
    animation: floatB 9s ease-in-out infinite reverse;
}
@keyframes floatA {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}
@keyframes floatB {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}
.fc-icon {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; color: #fff; margin-bottom: 12px;
}
.fc-title {
    font-size: 14px; font-weight: 600; margin-bottom: 6px;
}
.fc-desc {
    font-size: 11px; color: rgba(255, 255, 255, 0.65); line-height: 1.5;
}

/* Section header */
.section-title {
    display: flex; flex-direction: column; gap: 6px;
    margin-bottom: 50px;
}
.section-title.center { align-items: center; text-align: center; }
.section-title .title-en {
    font-size: 13px; color: #1890ff; font-weight: 600;
    letter-spacing: 3px; text-transform: uppercase;
}
.section-title .title-cn {
    font-size: 32px; color: #1a2a45; font-weight: 700;
}
.section-title .title-line {
    width: 40px; height: 3px; background: #1890ff;
    border-radius: 2px; margin-top: 4px;
}
.section-title.center .title-line { margin-left: auto; margin-right: auto; }

/* Core services - 3 rows x 2 cols layout */
.core-services {
    padding: 100px 0;
    background: #fff;
}
.services-grid {
    display: flex;
    flex-direction: column;
    gap: 80px;
}
.service-row {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 60px;
    align-items: center;
    background: #f8fbff;
    border-radius: 16px;
    padding: 50px;
    border: 1px solid #f0f5fa;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}
.service-row::before {
    content: ""; position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, #1890ff, #096dd9);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.4s ease;
}
.service-row:hover {
    box-shadow: 0 20px 50px rgba(24, 144, 255, 0.1);
    border-color: rgba(24, 144, 255, 0.2);
}
.service-row:hover::before { transform: scaleX(1); }
.service-row.reverse { direction: rtl; }
.service-row.reverse .service-content { direction: ltr; }
.service-content {
    display: flex; flex-direction: column;
}
.service-title {
    font-size: 24px; color: #1a2a45;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
}
.service-intro {
    font-size: 13px; color: #888;
    line-height: 1.8;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px dashed #e0e8f0;
}
.service-subtitle {
    font-size: 16px; color: #1890ff;
    font-weight: 600;
    margin-bottom: 10px;
    margin-top: 6px;
}
.service-desc {
    font-size: 13px; color: #555;
    line-height: 1.9;
    margin-bottom: 20px;
}
.service-list {
    list-style: none; padding: 0; margin: 0;
    display: flex; flex-direction: column;
    gap: 12px;
}
.service-list li {
    display: flex; gap: 10px;
    font-size: 13px; color: #444;
    line-height: 1.8;
    align-items: flex-start;
}
.service-list .check {
    flex-shrink: 0;
    display: inline-flex; align-items: center; justify-content: center;
    width: 18px; height: 18px;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 50%;
    margin-top: 3px;
    line-height: 1;
}
.service-list strong {
    color: #1a2a45;
    font-weight: 600;
}
.service-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(24, 144, 255, 0.12);
    transition: transform 0.4s ease;
    background: #f4f8ff;
    align-self: stretch;
    display: flex;
}
.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    /*background: linear-gradient(135deg, #f0f9ff 0%, #e6f7ff 100%);*/
    text-align: center;
}
.cta-section h2 {
    font-size: 28px; color: #1a2a45;
    margin-bottom: 16px; font-weight: 600;
}
.cta-section p {
    color: #666; font-size: 14px;
    margin-bottom: 32px;
}
.cta-btn {
    display: inline-flex; align-items: center; gap: 12px;
    padding: 12px 40px; background: #1890ff; color: #fff;
    border-radius: 30px; font-size: 15px;
    transition: all 0.3s ease;
}
.cta-btn span {
    width: 24px; height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 12px;
}
.cta-btn:hover {
    background: #096dd9; transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(24, 144, 255, 0.3);
}

/* Mobile */
@media (max-width: 1024px) {
    .core-hero { height: 480px; }
    .core-hero-inner { grid-template-columns: 1fr; gap: 30px; }
    .core-hero-visual { height: 300px; }
    .services-grid { gap: 50px; }
    .service-row { grid-template-columns: 1fr; gap: 30px; padding: 36px 28px; }
    .service-row.reverse { direction: ltr; }
}
@media (max-width: 768px) {
    .core-hero { height: auto; padding: 60px 0 40px; margin-top: 60px; }
    .core-hero-text .h1-title { font-size: 30px; }
    .core-hero-text .h1-en { font-size: 12px; }
    .core-hero-visual { display: none; }
    .services-grid { gap: 30px; }
    .service-row { padding: 28px 20px; gap: 20px; }
    .service-title { font-size: 20px; }
    .section-title .title-cn { font-size: 24px; }
    .cta-section h2 { font-size: 20px; }
}