/* 
  西部数据机场 - 暗黑炫酷玻璃拟物风格 CSS 
*/

:root {
    --bg-color: #0b0c10;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #45f3ff;
    --accent-hover: #00d2ff;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-weight: 800;
    line-height: 1.2;
}
.highlight {
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(69, 243, 255, 0.5);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(11, 12, 16, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}
.logo-wd { color: var(--accent-color); }
.logo-jc { color: #fff; }

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    margin-left: 30px;
    font-weight: 600;
    transition: color 0.3s ease;
}
.nav-links a:hover {
    color: var(--accent-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}
.btn-primary {
    background: var(--accent-color);
    color: #000;
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px rgba(69, 243, 255, 0.4);
}
.btn-glow {
    background: linear-gradient(45deg, var(--accent-color), #bc13fe);
    color: #fff;
    border: none;
}
.btn-glow:hover {
    box-shadow: 0 0 30px rgba(188, 19, 254, 0.6);
    transform: translateY(-2px);
}
.btn-outline {
    border: 2px solid var(--card-border);
    color: #fff;
}
.btn-outline:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}
.btn-buy {
    width: 100%;
    text-align: center;
    margin-top: 20px;
    background: rgba(255,255,255,0.1);
    color: #fff;
}
.btn-buy:hover {
    background: var(--accent-color);
    color: #000;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 60px;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    border-top: 1px solid var(--card-border);
    padding-top: 30px;
}

.stat-item {
    font-size: 1rem;
    color: var(--text-secondary);
}
.stat-item span {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
}

/* Background Effects */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 10s infinite alternate;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: #bc13fe;
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-color);
    bottom: 20%;
    right: 10%;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Sections */
section {
    padding: 100px 5%;
    position: relative;
    z-index: 2;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.section-sub {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 50px;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 40px 30px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(69, 243, 255, 0.3);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 40px;
    backdrop-filter: blur(10px);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.recommended {
    border-color: var(--accent-color);
    box-shadow: 0 0 30px rgba(69, 243, 255, 0.1);
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background: var(--accent-color);
    color: #000;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.plan-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.plan-price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 30px;
}
.plan-price span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.plan-features {
    list-style: none;
    margin-bottom: 30px;
    flex-grow: 1;
}

.plan-features li {
    margin-bottom: 15px;
    color: var(--text-secondary);
}
.plan-features strong {
    color: #fff;
}

/* Reviews */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.review-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.05), transparent);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 30px;
}

.review-stars {
    color: #ffd700;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.review-card p {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.reviewer {
    font-weight: 600;
    color: #fff;
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 50px auto 0;
}

.faq-item {
    border-bottom: 1px solid var(--card-border);
    padding: 20px 0;
}

.faq-question {
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: var(--accent-color);
}

.toggle-icon {
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, margin-top 0.4s ease, opacity 0.4s ease;
    color: var(--text-secondary);
    opacity: 0;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    margin-top: 15px;
    opacity: 1;
}
.faq-item.active .toggle-icon {
    transform: rotate(45deg);
}

/* SEO Articles Section */
.seo-articles {
    background: rgba(0,0,0,0.3);
}

.article-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    max-width: 1000px;
    margin: 40px auto 0;
}

.article-links a {
    display: block;
    padding: 15px 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-links a:hover {
    background: rgba(255,255,255,0.1);
    color: var(--accent-color);
    border-color: rgba(69, 243, 255, 0.3);
}

/* Footer & Tags */
.footer {
    border-top: 1px solid var(--card-border);
    padding: 60px 5% 20px;
    background: #050608;
}

.footer-tags-container {
    max-width: 1200px;
    margin: 0 auto 40px;
}

.footer-tags-container h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: #fff;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tags span {
    font-size: 0.8rem;
    color: #666;
    padding: 5px 12px;
    background: rgba(255,255,255,0.03);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.2s ease;
}

.tags span:hover {
    color: var(--text-secondary);
    border-color: rgba(255,255,255,0.2);
}

.footer-bottom {
    text-align: center;
    color: #555;
    font-size: 0.9rem;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1rem; }
    .nav-links { display: none; }
    .pricing-card.recommended { transform: scale(1); }
    .hero-stats { flex-direction: column; gap: 20px; }
}