/* ===== 深圳市勇玖照明技术有限公司 - 企业官网自定义样式 ===== */

:root {
    --color-primary: #0f2942;
    --color-primary-light: #1a3a5c;
    --color-accent: #f59e0b;
    --color-accent-light: #fbbf24;
    --color-accent-dark: #d97706;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ===== 导航栏 ===== */
.navbar {
    transition: all 0.4s ease;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--color-accent);
}

/* 移动端菜单 */
.mobile-menu {
    transform: translateX(100%);
    transition: transform 0.4s ease;
}

.mobile-menu.open {
    transform: translateX(0);
}

/* ===== Hero 区域 ===== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #0f2942 0%, #1a3a5c 50%, #0f2942 100%);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(245, 158, 11, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(245, 158, 11, 0.08) 0%, transparent 40%);
    z-index: 1;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(15, 41, 66, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 41, 66, 0.3) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: #ffffff;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

/* 光线动画 */
.light-beam {
    position: absolute;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(245, 158, 11, 0.4), transparent);
    animation: lightBeam 4s ease-in-out infinite;
}

.light-beam:nth-child(1) { left: 15%; animation-delay: 0s; }
.light-beam:nth-child(2) { left: 45%; animation-delay: 1.5s; }
.light-beam:nth-child(3) { left: 75%; animation-delay: 3s; }

@keyframes lightBeam {
    0%, 100% { opacity: 0; transform: translateY(-50%); }
    50% { opacity: 1; transform: translateY(50%); }
}

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background: var(--color-accent);
    color: #ffffff;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid var(--color-accent);
    cursor: pointer;
    text-decoration: none;
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background: transparent;
    color: #ffffff;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.4);
    cursor: pointer;
    text-decoration: none;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    transform: translateY(-2px);
}

.btn-dark {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid var(--color-primary);
    cursor: pointer;
    text-decoration: none;
}

.btn-dark:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(15, 41, 66, 0.25);
}

/* ===== 通用区块 ===== */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 2px;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 分隔线装饰 */
.title-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 1.5rem auto 0;
}

.title-decoration .line {
    width: 40px;
    height: 2px;
    background: var(--color-accent);
}

.title-decoration .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
}

/* ===== 卡片 ===== */
.feature-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover {
    border-color: transparent;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-6px);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 158, 11, 0.1);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    transition: all 0.4s ease;
}

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

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
    transition: color 0.4s ease;
}

.feature-card:hover .feature-icon svg {
    color: #ffffff;
}

/* ===== 产品卡片 ===== */
.product-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.product-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-6px);
}

.product-image {
    width: 100%;
    height: 260px;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image svg {
    width: 80px;
    height: 80px;
    color: var(--color-primary);
    opacity: 0.6;
    transition: all 0.4s ease;
}

.product-card:hover .product-image svg {
    transform: scale(1.15);
    color: var(--color-accent);
    opacity: 1;
}

.product-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 2px;
}

/* ===== 数据统计 ===== */
.stats-section {
    background: linear-gradient(135deg, #0f2942 0%, #1a3a5c 100%);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    margin-top: 0.75rem;
}

/* ===== 时间线 ===== */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: 2.5rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -2rem;
    top: 0.25rem;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid #ffffff;
    box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-year {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.timeline-desc {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1rem;
    color: var(--color-text);
    transition: all 0.3s ease;
    background: #ffffff;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== 页脚 ===== */
.footer {
    background: #0a1929;
    color: rgba(255, 255, 255, 0.7);
}

.footer-link {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s ease;
    text-decoration: none;
}

.footer-link:hover {
    color: var(--color-accent);
}

/* ===== 滚动动画 ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
}

/* 延迟动画 */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }

/* ===== 页面横幅 ===== */
.page-banner {
    position: relative;
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #0f2942 0%, #1a3a5c 100%);
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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;
}

.page-banner::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 70% 50%, rgba(245, 158, 11, 0.12) 0%, transparent 60%);
}

.page-banner-content {
    position: relative;
    z-index: 2;
}

/* ===== 滚动指示器 ===== */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .stat-number {
        font-size: 2.25rem;
    }
}