/* ========================================
   丝梦建站 - 首页专属样式
   竖向悬浮时序布局
   ======================================== */

/* Hero Banner - 全屏柔雅展示 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-yellow-soft) 50%, var(--color-cream-dark) 100%);
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.08;
    background-image: 
        radial-gradient(circle at 20% 30%, var(--color-brown-light) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, var(--color-accent) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 40px;
}

.hero-badge {
    display: inline-block;
    padding: 10px 30px;
    background: var(--color-white);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 30px;
    box-shadow: var(--shadow-soft);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: 64px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 25px;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-title span {
    color: var(--color-accent);
    position: relative;
}

.hero-description {
    font-size: 20px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll svg {
    width: 30px;
    height: 30px;
    stroke: var(--color-brown-medium);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-15px);
    }
    60% {
        transform: translateX(-50%) translateY(-7px);
    }
}

/* ========================================
   竖向时序悬浮布局
   ======================================== */
.timeline-section {
    position: relative;
    padding: 120px 0;
    background: var(--color-cream);
}

.timeline-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-brown-light) 100%);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 100px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: calc(50% + 60px);
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: calc(50% + 60px);
    text-align: left;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 24px;
    background: var(--color-white);
    border: 4px solid var(--color-accent);
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 0 8px var(--color-cream-dark);
}

.timeline-content {
    max-width: 450px;
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    position: relative;
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.timeline-content::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 0;
    height: 0;
    border: 12px solid transparent;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::after {
    right: -24px;
    border-left-color: var(--color-white);
}

.timeline-item:nth-child(even) .timeline-content::after {
    left: -24px;
    border-right-color: var(--color-white);
}

.timeline-number {
    font-family: var(--font-primary);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 15px;
}

.timeline-title {
    font-family: var(--font-primary);
    font-size: 26px;
    color: var(--color-text-primary);
    margin-bottom: 15px;
}

.timeline-text {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   核心优势板块
   ======================================== */
.advantages-section {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-yellow-soft) 100%);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.advantage-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-brown-light));
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

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

.advantage-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-hover);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--color-cream-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.advantage-card:hover .advantage-icon {
    background: var(--color-accent);
}

.advantage-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--color-brown-dark);
    transition: var(--transition-smooth);
}

.advantage-card:hover .advantage-icon svg {
    stroke: var(--color-white);
}

.advantage-title {
    font-family: var(--font-primary);
    font-size: 20px;
    color: var(--color-text-primary);
    margin-bottom: 15px;
}

.advantage-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   快速入口
   ======================================== */
.quick-access-section {
    padding: 120px 0;
    background: var(--color-white);
}

.quick-access-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.access-card {
    position: relative;
    height: 400px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    group: ;
}

.access-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.access-card:hover .access-image {
    transform: scale(1.1);
}

.access-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px;
    background: linear-gradient(transparent, rgba(93, 78, 55, 0.9));
    color: var(--color-white);
    transform: translateY(0);
    transition: var(--transition-smooth);
}

.access-title {
    font-family: var(--font-primary);
    font-size: 28px;
    margin-bottom: 10px;
}

.access-text {
    font-size: 15px;
    opacity: 0.9;
    margin-bottom: 20px;
}

.access-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-yellow-warm);
}

.access-link svg {
    width: 18px;
    height: 18px;
    transition: var(--transition-smooth);
}

.access-card:hover .access-link svg {
    transform: translateX(5px);
}

/* ========================================
   首页资讯列表
   ======================================== */
.news-section {
    padding: 120px 0;
    background: var(--color-cream-dark);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
}

/* ========================================
   响应式调整
   ======================================== */
@media (max-width: 1200px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 48px;
    }
    
    .timeline-line {
        left: 40px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 100px;
        margin-right: 0;
        text-align: left;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::after,
    .timeline-item:nth-child(even) .timeline-content::after {
        left: -24px;
        border-right-color: var(--color-white);
        border-left-color: transparent;
    }
    
    .timeline-dot {
        left: 40px;
    }
    
    .quick-access-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .timeline-container {
        padding: 0 20px;
    }
    
    .timeline-line {
        left: 30px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 70px;
    }
    
    .timeline-dot {
        left: 30px;
        width: 18px;
        height: 18px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .timeline-content {
        padding: 25px;
    }
    
    .timeline-title {
        font-size: 20px;
    }
}