/* 
 * 尧图网站定制 - 全站主样式
 * 风格：深色科技风 + 霓虹蓝绿渐变 + 玻璃拟态
 * 布局：浮动悬浮卡片布局
 */

:root {
    --bg-dark: #0a0e17;
    --bg-card: rgba(20, 30, 48, 0.6);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --neon-blue: #00f3ff;
    --neon-green: #00ff9d;
    --neon-purple: #bd00ff;
    --text-primary: #ffffff;
    --text-secondary: #a0b3c6;
    --border-glass: rgba(255, 255, 255, 0.1);
    --gradient-main: linear-gradient(135deg, var(--neon-blue), var(--neon-green));
    --gradient-hover: linear-gradient(135deg, var(--neon-green), var(--neon-blue));
    --shadow-neon: 0 0 20px rgba(0, 243, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 243, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(0, 255, 157, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(189, 0, 255, 0.05) 0%, transparent 50%);
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-main);
    border-radius: 4px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    background: rgba(10, 14, 23, 0.8);
    border-bottom: 1px solid var(--border-glass);
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.98);
    box-shadow: 0 4px 30px rgba(0, 243, 255, 0.1);
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: 1px;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.navbar-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.navbar-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    transition: width 0.3s ease;
}

.navbar-nav a:hover,
.navbar-nav a.active {
    color: var(--text-primary);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--neon-blue);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ==================== Hero Banner ==================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 100px 5% 50px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/banner.jpg') center/cover no-repeat;
    opacity: 0.3;
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-main);
    color: var(--bg-dark);
    box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--neon-blue);
    border: 2px solid var(--neon-blue);
}

.btn-outline:hover {
    background: var(--neon-blue);
    color: var(--bg-dark);
}

/* ==================== 浮动卡片布局 ==================== */
.section {
    padding: 100px 5%;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    font-size: 1.1rem;
}

.float-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    position: relative;
}

.float-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.float-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.float-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 243, 255, 0.2);
    border-color: rgba(0, 243, 255, 0.3);
}

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

.card-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-main);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--bg-dark);
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 服务特色 ==================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-glass);
    border-radius: 15px;
    border: 1px solid var(--border-glass);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: scale(1.05);
}

.feature-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

/* ==================== 案例展示 ==================== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    transition: all 0.4s ease;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 255, 157, 0.15);
}

.case-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.case-info {
    padding: 1.5rem;
}

.case-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* ==================== 新闻列表 ==================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.news-card {
    background: var(--bg-card);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 243, 255, 0.3);
}

.news-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.news-content {
    padding: 1.5rem;
}

.news-title {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.news-excerpt {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    color: var(--neon-blue);
    font-size: 0.85rem;
}

/* ==================== 页脚 ==================== */
.footer {
    background: rgba(5, 8, 13, 0.95);
    padding: 60px 5% 30px;
    border-top: 1px solid var(--border-glass);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-title {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--neon-blue);
}

.footer-contact p {
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-glass);
    color: var(--text-secondary);
}

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .navbar-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 23, 0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    .navbar-nav.active {
        transform: translateX(0);
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.2rem;
    }

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

    .hero-btns {
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .float-grid,
    .case-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 内页通用样式 ==================== */
.page-header {
    padding: 150px 5% 80px;
    text-align: center;
    position: relative;
    background: linear-gradient(180deg, rgba(10, 14, 23, 0.8) 0%, var(--bg-dark) 100%);
}

.page-title {
    font-size: 3rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

.content-section {
    padding: 80px 5%;
}

/* 价格表 */
.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.price-card.featured {
    border-color: var(--neon-blue);
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.2);
}

.price-card.featured::before {
    content: '推荐';
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--gradient-main);
    color: var(--bg-dark);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.price-name {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
}

.price-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.price-features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-glass);
    color: var(--text-secondary);
}

.price-features li:last-child {
    border-bottom: none;
}

/* 联系表单 */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.2);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* 资讯详情页 */
.article-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 5%;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-glass);
}

.article-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-meta {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.article-body {
    color: var(--text-secondary);
    line-height: 2;
    font-size: 1.1rem;
}

.article-body img {
    max-width: 100%;
    border-radius: 10px;
    margin: 2rem 0;
}

.related-news {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-glass);
}