/* 体育预测平台 - 政治预测网站 - 专业企业服务 */
/* 设计风格：野兽派 + 数据可视化 + 高对比度 */
/* 色彩系统：深酒红 + 荧光绿 + 暗金 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

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

body {
    font-family: 'Noto Sans SC', system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: #0a0a0a;
    color: #e8e0d4;
    overflow-x: hidden;
    line-height: 1.6;
}

::selection {
    background: #39ff14;
    color: #0a0a0a;
}

/* 核心布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section:nth-child(even) {
    background: #111111;
    border-top: 1px solid rgba(57, 255, 20, 0.1);
    border-bottom: 1px solid rgba(57, 255, 20, 0.1);
}

/* 导航 */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid #39ff14;
    box-shadow: 0 0 30px rgba(57, 255, 20, 0.15);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 900;
    font-size: 1.4rem;
    text-decoration: none;
    color: #39ff14;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(57, 255, 20, 0.5);
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: #39ff14;
    color: #0a0a0a;
    font-weight: 900;
    transform: skewX(-10deg);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    color: #e8e0d4;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 1px;
    position: relative;
    padding: 4px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #39ff14;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a:hover {
    color: #39ff14;
}

.main-nav a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px;
    border-radius: 4px;
    color: #0a0a0a !important;
    font-weight: 700;
    background: #39ff14;
    letter-spacing: 1px;
    text-transform: uppercase;
    transform: skewX(-10deg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
}

.nav-cta:hover {
    transform: skewX(-10deg) scale(1.05);
    box-shadow: 0 0 40px rgba(57, 255, 20, 0.5);
    color: #0a0a0a !important;
}

.nav-cta::after {
    display: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: 2px solid #39ff14;
    color: #39ff14;
    padding: 8px 16px;
    font-size: 1.2rem;
    cursor: pointer;
    transform: skewX(-10deg);
    transition: all 0.3s;
}

.menu-toggle:hover {
    background: #39ff14;
    color: #0a0a0a;
}

/* 首页Hero */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a0a0a 50%, #0a0a0a 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(57, 255, 20, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(139, 0, 0, 0.05) 0%, transparent 50%);
    animation: heroGlow 20s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, -2%) rotate(1deg); }
    66% { transform: translate(-2%, 2%) rotate(-1deg); }
}

.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 0;
    margin-bottom: 20px;
    background: rgba(57, 255, 20, 0.1);
    color: #39ff14;
    border: 1px solid #39ff14;
    transform: skewX(-10deg);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 900;
    color: #e8e0d4;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.hero h1 span {
    color: #39ff14;
    text-shadow: 0 0 30px rgba(57, 255, 20, 0.3);
}

.hero p {
    font-size: 1.15rem;
    opacity: 0.7;
    max-width: 560px;
    margin-bottom: 36px;
    color: #b0a898;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    border: 2px solid rgba(57, 255, 20, 0.2);
    transform: skewX(-2deg);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: skewX(-10deg);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.btn-primary {
    color: #0a0a0a;
    background: #39ff14;
    box-shadow: 0 0 30px rgba(57, 255, 20, 0.3);
}

.btn-primary:hover {
    transform: skewX(-10deg) translateY(-2px);
    box-shadow: 0 0 50px rgba(57, 255, 20, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid #39ff14;
    color: #39ff14;
}

.btn-outline:hover {
    background: #39ff14;
    color: #0a0a0a;
    transform: skewX(-10deg) translateY(-2px);
}

/* 标签/标题 */
.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 16px;
    color: #39ff14;
    text-transform: uppercase;
    border-bottom: 2px solid #39ff14;
    padding-bottom: 8px;
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 16px;
    font-weight: 900;
    color: #e8e0d4;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.section-desc {
    max-width: 600px;
    opacity: 0.7;
    margin-bottom: 48px;
    color: #b0a898;
    line-height: 1.8;
}

/* 卡片网格 */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.category-card {
    border-radius: 4px;
    padding: 32px;
    border: 1px solid rgba(57, 255, 20, 0.15);
    background: rgba(17, 17, 17, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #39ff14, #8b0000);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-card:hover {
    transform: translateY(-4px);
    border-color: #39ff14;
    box-shadow: 0 8px 30px rgba(57, 255, 20, 0.15);
}

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

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    background: rgba(57, 255, 20, 0.1);
    border: 1px solid rgba(57, 255, 20, 0.2);
    transform: skewX(-10deg);
}

.card-link {
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    color: #39ff14;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: gap 0.3s;
}

.card-link:hover {
    gap: 14px;
}

/* 特性块 */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-image {
    border-radius: 4px;
    overflow: hidden;
    border: 2px solid rgba(57, 255, 20, 0.15);
    transform: skewX(-2deg);
}

.feature-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-image:hover img {
    transform: scale(1.05);
}

.feature-text {
    position: relative;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(57, 255, 20, 0.05);
}

.feature-list li::before {
    content: '→';
    font-weight: 700;
    color: #39ff14;
    font-size: 1.2rem;
}

/* 数据条 */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item {
    padding: 32px 24px;
    border-radius: 4px;
    border: 1px solid rgba(57, 255, 20, 0.15);
    background: rgba(17, 17, 17, 0.6);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.stat-item:hover {
    border-color: #39ff14;
    box-shadow: 0 0 20px rgba(57, 255, 20, 0.1);
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #39ff14, #8b0000);
    opacity: 0;
    transition: opacity 0.3s;
}

.stat-item:hover::after {
    opacity: 1;
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    color: #39ff14;
    line-height: 1;
    margin-bottom: 8px;
    text-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-top: 8px;
    color: #b0a898;
    letter-spacing: 1px;
}

/* 内容墙 */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.content-wall-item {
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid rgba(57, 255, 20, 0.15);
    background: rgba(17, 17, 17, 0.6);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-wall-item:hover {
    transform: translateY(-4px);
    border-color: #39ff14;
    box-shadow: 0 8px 30px rgba(57, 255, 20, 0.15);
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.6s;
}

.content-wall-item:hover img {
    transform: scale(1.05);
}

.content-wall-body {
    padding: 24px;
}

.content-wall-body h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: #e8e0d4;
}

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

.faq-item {
    border: 1px solid rgba(57, 255, 20, 0.15);
    border-radius: 4px;
    margin-bottom: 8px;
    overflow: hidden;
    cursor: pointer;
    background: rgba(17, 17, 17, 0.6);
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: #39ff14;
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #e8e0d4;
    font-size: 1.05rem;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.4rem;
    color: #39ff14;
    transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    opacity: 0.7;
    color: #b0a898;
    line-height: 1.8;
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 0.7; transform: translateY(0); }
}

/* CTA横幅 */
.cta-banner {
    padding: 64px 32px;
    text-align: center;
    border-radius: 4px;
    color: #e8e0d4;
    background: linear-gradient(135deg, #1a0a0a 0%, #0a0a0a 100%);
    border: 2px solid rgba(57, 255, 20, 0.2);
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(57, 255, 20, 0.03) 0%, transparent 50%);
    animation: ctaGlow 10s ease-in-out infinite;
}

@keyframes ctaGlow {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(2%, -2%); }
}

.cta-banner h2 {
    color: #e8e0d4;
    font-size: 2rem;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-banner p {
    position: relative;
    z-index: 1;
    opacity: 0.7;
}

.cta-banner .btn {
    position: relative;
    z-index: 1;
    margin-top: 24px;
}

.cta-banner .btn-primary {
    background: #39ff14;
    color: #0a0a0a;
}

/* 页脚 */
.site-footer {
    padding: 64px 0 32px;
    background: #0a0a0a;
    border-top: 2px solid rgba(57, 255, 20, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.footer-brand {
    color: #b0a898;
    line-height: 1.8;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-col h4 {
    color: #39ff14;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.footer-col a {
    display: block;
    color: #b0a898;
    text-decoration: none;
    padding: 6px 0;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #39ff14;
}

.footer-bottom {
    border-top: 1px solid rgba(57, 255, 20, 0.1);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    color: #666;
}

/* 工具类 */
.text-accent {
    color: #39ff14;
}

.text-center {
    text-align: center;
}

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.7;
    color: #b0a898;
    line-height: 1.8;
}

.mt-0 {
    margin-top: 0;
}

.mb-0 {
    margin-bottom: 0;
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    
    .main-nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.98);
        padding: 24px;
        border-bottom: 2px solid #39ff14;
        gap: 16px;
    }
    
    .hero {
        min-height: 70vh;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .section {
        padding: 64px 0;
    }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
}

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

::-webkit-scrollbar-track {
    background: #0a0a0a;
}

::-webkit-scrollbar-thumb {
    background: #39ff14;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2ccc10;
}