/* ===== 轮播图 ===== */
.hero-slider {
    position: relative;
    height: 700px;
    overflow: hidden;
    background: var(--secondary-color);
}

.slider-container {
    position: relative;
    height: 100%;
}

.slider-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
}

.slider-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(6,23,56,0.9) 0%, rgba(10,92,245,0.7) 100%);
}

.slider-item.active {
    opacity: 1;
    visibility: visible;
}

.slider-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
    color: white;
    margin: 0 auto;
    text-align: center;
}

.slider-subtitle {
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 20px;
    color: rgba(255,255,255,0.8);
    animation: fadeInUp 1s ease;
}

.slider-content h2 {
    font-size: 58px;
    font-weight: 700;
    margin-bottom: 25px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    animation: fadeInUp 1s ease 0.2s both;
}

.slider-content p {
    font-size: 18px;
    margin-bottom: 35px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.4s both;
}

.slider-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1s ease 0.6s both;
}

.btn-primary, .btn-secondary {
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
    background: #0a3c9c;
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(10,92,245,0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--secondary-color);
    transform: translateY(-3px);
}

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

/* 轮播控制 */
.slider-controls {
    position: absolute;
    bottom: 40px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 15px;
    z-index: 3;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dot.active {
    background: var(--primary-color);
    transform: scale(1.3);
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: var(--transition);
    z-index: 3;
    backdrop-filter: blur(5px);
}

.slider-arrow:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.slider-arrow.prev {
    left: 40px;
}

.slider-arrow.next {
    right: 40px;
}