/* ============ 首页 HERO 轮播 ============ */
.hero-carousel {
    position: relative;
    height: 100vh;
    min-height: 640px;
    overflow: hidden;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease;
    pointer-events: none;
}

.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
}

.carousel-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.08);
    transition: transform 8s ease;
}

.carousel-slide.active .carousel-bg {
    transform: scale(1);
}

.carousel-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 30, 60, 0.75) 0%, rgba(14, 107, 176, 0.55) 50%, rgba(10, 30, 60, 0.7) 100%);
}

.carousel-content {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 80px;
}

.hero-label {
    display: inline-block;
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 6px;
    margin-bottom: 28px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    width: fit-content;
    opacity: 0;
    transform: translateY(20px);
    animation: heroIn 1s ease 0.3s forwards;
}

.carousel-slide.active .hero-label {
    animation: heroIn 1s ease 0.3s forwards;
}

.carousel-slide.active .hero-title {
    animation: heroIn 1s ease 0.5s forwards;
}

.carousel-slide.active .hero-subtitle {
    animation: heroIn 1s ease 0.7s forwards;
}

.carousel-slide.active .hero-btns {
    animation: heroIn 1s ease 0.9s forwards;
}

@keyframes heroIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 28px;
    max-width: 720px;
    opacity: 0;
    transform: translateY(20px);
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 44px;
    max-width: 640px;
    opacity: 0;
    transform: translateY(20px);
}

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(20px);
}

/* Carousel controls */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    transition: all 0.3s ease;
    cursor: pointer;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    color: #0E6BB0;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev { left: 32px; }
.carousel-next { right: 32px; }

.carousel-dots {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 5;
}

.carousel-dot {
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: #fff;
    width: 64px;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 11px;
    letter-spacing: 3px;
    z-index: 5;
}

.scroll-line {
    display: block;
    width: 40px;
    height: 1px;
    background: rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    inset: 0;
    background: #fff;
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: translateX(-100%); }
    50%, 100% { transform: translateX(100%); }
}

@media (max-width: 900px) {
    .hero-title { font-size: 42px; }
    .hero-subtitle { font-size: 15px; }
    .carousel-prev { left: 16px; }
    .carousel-next { right: 16px; }
    .carousel-btn { width: 44px; height: 44px; }
    .carousel-dots { bottom: 60px; }
    .hero-scroll { display: none; }
}

@media (max-width: 480px) {
    .hero-carousel { min-height: 560px; }
    .hero-title { font-size: 32px; }
    .hero-label { font-size: 12px; letter-spacing: 3px; }
}

/* ============ 服务 GRID ============ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    position: relative;
    padding: 44px 36px 40px;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: block;
    color: inherit;
    border: 1px solid rgba(14, 107, 176, 0.08);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary-lighter) 0%, #D0E4F5 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(14, 107, 176, 0.3);
}

.service-num {
    position: absolute;
    top: 32px;
    right: 36px;
    font-size: 36px;
    font-weight: 800;
    color: #F0F4FA;
    letter-spacing: -2px;
    transition: var(--transition);
}

.service-card:hover .service-num {
    color: rgba(14, 107, 176, 0.15);
}

.service-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 14px;
}

.service-desc {
    font-size: 14.5px;
    color: var(--text-light);
    line-height: 1.75;
    margin-bottom: 24px;
}

.service-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.service-card:hover .service-cta {
    gap: 14px;
}

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

@media (max-width: 640px) {
    .services-grid { grid-template-columns: 1fr; }
}

/* ============ ABOUT 关于我们 专区 ============ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
    min-height: 540px;
}

.about-image-main {
    width: 100%;
    height: 480px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(14, 107, 176, 0.2);
}

.about-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-image-sub {
    position: absolute;
    right: -40px;
    bottom: 0;
    width: 240px;
    height: 220px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    border: 8px solid #fff;
}

.about-image-sub img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.experience-badge {
    position: absolute;
    left: -30px;
    top: 40px;
    background: #fff;
    padding: 24px 28px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 16px 40px rgba(14, 107, 176, 0.18);
    border-left: 4px solid var(--primary);
}

.exp-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.exp-text {
    font-size: 14px;
    color: var(--text-regular);
    font-weight: 600;
    line-height: 1.4;
}

.about-content .section-label {
    display: inline-block;
    margin-bottom: 20px;
    position: relative;
}

.about-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.about-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 36px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

.about-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.about-feature:hover {
    background: var(--primary-lighter);
}

.about-feat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary-lighter);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.about-feature:hover .about-feat-icon {
    background: var(--primary);
    color: #fff;
}

.about-feature h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.about-feature p {
    font-size: 13px;
    color: var(--text-light);
    margin: 0;
}

.about-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 60px; }
    .about-visual { min-height: 440px; }
    .about-image-main { height: 420px; }
    .about-image-sub { right: 0; }
    .experience-badge { left: 0; }
    .about-title { font-size: 32px; }
}

@media (max-width: 640px) {
    .about-features { grid-template-columns: 1fr; }
    .about-image-sub { display: none; }
    .about-title { font-size: 28px; }
}

/* ============ 统计数据 ============ */
.stats-section {
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.stat-item {
    text-align: center;
    color: #fff;
    padding: 32px 20px;
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -16px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
}

.stat-num {
    font-size: 56px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 12px;
    letter-spacing: -2px;
}

.stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    letter-spacing: 1px;
}

@media (max-width: 900px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .stat-item::after { display: none; }
    .stat-num { font-size: 44px; }
}

/* ============ 服务流程 ============ */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    position: relative;
}

.process-item {
    position: relative;
    text-align: center;
    padding: 40px 24px 32px;
    background: #fff;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    z-index: 2;
    border: 1px solid var(--border);
}

.process-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.process-num {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    box-shadow: 0 8px 20px rgba(14, 107, 176, 0.3);
}

.process-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--primary-lighter);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.process-item:hover .process-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.1) rotate(-5deg);
}

.process-item h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.process-item p {
    font-size: 13.5px;
    color: var(--text-light);
    line-height: 1.7;
    margin: 0;
}

@media (max-width: 1024px) {
    .process-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }
}

@media (max-width: 640px) {
    .process-grid { grid-template-columns: 1fr; }
}

/* ============ 案例预览 ============ */
.cases-preview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.case-item {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border);
}

.case-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.case-thumb {
    position: relative;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.case-icon-wrap {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.case-item:hover .case-icon-wrap {
    background: rgba(255, 255, 255, 0.28);
    transform: scale(1.08) rotate(10deg);
}

.case-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.case-item h4 {
    padding: 20px 20px 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
}

.case-item p {
    padding: 0 20px 20px;
    font-size: 13.5px;
    color: var(--text-light);
    line-height: 1.7;
}

@media (max-width: 1024px) {
    .cases-preview-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .cases-preview-grid { grid-template-columns: 1fr; }
}

/* ============ CTA 专区 ============ */
.cta-section {
    background: linear-gradient(135deg, #0E6BB0 0%, #1976D2 50%, #0A5489 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 80px 0;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-content h2 {
    font-size: 38px;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}

.cta-content p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.cta-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

@media (max-width: 900px) {
    .cta-inner { flex-direction: column; text-align: center; padding: 60px 0; }
    .cta-content h2 { font-size: 28px; }
}