/* ============================================
   国产自拍 - 游戏解说视频社区 原创样式表
   域名: jycfhg.cn
   配色: 军事橄榄绿 + 琥珀橙 + 深炭灰
   ============================================ */

/* === CSS变量定义 === */
:root {
    --primary: #3D5A1E;
    --primary-light: #5A7D2E;
    --primary-dark: #2A3F14;
    --accent: #E8922F;
    --accent-light: #F5A94D;
    --accent-dark: #C47518;
    --bg-dark: #121A0E;
    --bg-card: #1C2814;
    --bg-section: #162010;
    --text-main: #E8E4D9;
    --text-muted: #A8A290;
    --text-bright: #FFFFFF;
    --border-color: #3D5A1E;
    --shadow: rgba(0,0,0,0.4);
    --gradient-hero: linear-gradient(135deg, #121A0E 0%, #2A3F14 50%, #3D5A1E 100%);
    --gradient-accent: linear-gradient(90deg, #E8922F, #F5A94D);
    --radius: 10px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

/* === 全局重置 === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* === 通用容器 === */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === 顶部导航 === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(18, 26, 14, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(61, 90, 30, 0.3);
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-logo img {
    height: 42px;
    width: auto;
}

.brand-logo span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.main-nav a {
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent);
    background: rgba(232, 146, 47, 0.1);
}

.nav-search {
    display: flex;
    align-items: center;
    background: rgba(61, 90, 30, 0.3);
    border: 1px solid rgba(61, 90, 30, 0.5);
    border-radius: 20px;
    overflow: hidden;
}

.nav-search input {
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 7px 14px;
    font-size: 0.88rem;
    width: 160px;
    outline: none;
}

.nav-search input::placeholder {
    color: var(--text-muted);
}

.nav-search button {
    background: var(--accent);
    border: none;
    color: #fff;
    padding: 7px 14px;
    cursor: pointer;
    font-size: 0.88rem;
    transition: var(--transition);
}

.nav-search button:hover {
    background: var(--accent-light);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.6rem;
    cursor: pointer;
    padding: 6px;
}

/* === Hero Banner === */
.hero-section {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 68px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.55;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(18,26,14,0.6) 0%, rgba(18,26,14,0.85) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 60px 20px;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-bright);
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero-content h1 .brand-highlight {
    color: var(--accent);
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 28px;
    line-height: 1.8;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 28px;
}

.hero-tags span {
    background: rgba(61, 90, 30, 0.5);
    border: 1px solid rgba(90, 125, 46, 0.4);
    color: var(--accent-light);
    padding: 5px 16px;
    border-radius: 20px;
    font-size: 0.88rem;
}

.hero-btn {
    display: inline-block;
    background: var(--gradient-accent);
    color: #fff;
    padding: 13px 36px;
    border-radius: 30px;
    font-size: 1.05rem;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(232, 146, 47, 0.35);
    transition: var(--transition);
}

.hero-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(232, 146, 47, 0.5);
    color: #fff;
}

/* === 通用Section === */
.section-block {
    padding: 65px 0;
}

.section-block:nth-child(even) {
    background: var(--bg-section);
}

.section-title {
    text-align: center;
    margin-bottom: 45px;
}

.section-title h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 12px;
}

.section-title h2 .hl {
    color: var(--accent);
}

.section-title p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* === 视频卡片网格 === */
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(61, 90, 30, 0.25);
    transition: var(--transition);
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 12px 35px rgba(232, 146, 47, 0.15);
}

.video-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img {
    transform: scale(1.06);
}

.play-btn-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(18, 26, 14, 0.45);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-card:hover .play-btn-overlay {
    opacity: 1;
}

.play-icon {
    width: 60px;
    height: 60px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(232, 146, 47, 0.5);
    transition: transform 0.3s ease;
}

.video-card:hover .play-icon {
    transform: scale(1.1);
}

.play-icon::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent #fff;
    margin-left: 4px;
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.78rem;
}

.video-info {
    padding: 16px;
}

.video-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-bright);
    margin-bottom: 8px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* === 专家团队 === */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.expert-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid rgba(61, 90, 30, 0.25);
    transition: var(--transition);
}

.expert-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.expert-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 14px;
    border: 3px solid var(--accent);
}

.expert-card h4 {
    font-size: 1.05rem;
    color: var(--text-bright);
    margin-bottom: 6px;
}

.expert-card .role {
    color: var(--accent);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.expert-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* === AI赋能区 === */
.ai-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: center;
}

.ai-features-img img {
    border-radius: var(--radius-lg);
    border: 1px solid rgba(61, 90, 30, 0.3);
}

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

.ai-feature-list li {
    padding: 14px 0;
    border-bottom: 1px solid rgba(61, 90, 30, 0.2);
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.ai-feature-list li:last-child {
    border-bottom: none;
}

.ai-feature-list .feat-icon {
    width: 38px;
    height: 38px;
    background: rgba(232, 146, 47, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.ai-feature-list h4 {
    font-size: 1rem;
    color: var(--text-bright);
    margin-bottom: 4px;
}

.ai-feature-list p {
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* === 社区模块 === */
.community-banner {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 30px;
}

.community-banner img {
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.community-banner .overlay-text {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(transparent, rgba(18,26,14,0.9));
    color: var(--text-bright);
}

.community-banner .overlay-text h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.community-items {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.community-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 22px 16px;
    text-align: center;
    border: 1px solid rgba(61, 90, 30, 0.2);
    transition: var(--transition);
}

.community-item:hover {
    border-color: var(--accent);
    background: rgba(61, 90, 30, 0.15);
}

.community-item .icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.community-item h4 {
    font-size: 0.95rem;
    color: var(--text-bright);
    margin-bottom: 6px;
}

.community-item p {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* === 用户评论 === */
.review-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

.review-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid rgba(61, 90, 30, 0.2);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.review-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-weight: 700;
    font-size: 1.1rem;
}

.review-name {
    font-weight: 600;
    color: var(--text-bright);
    font-size: 0.95rem;
}

.review-date {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.review-stars {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.review-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

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

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-bottom: 12px;
    border: 1px solid rgba(61, 90, 30, 0.2);
    overflow: hidden;
}

.faq-question {
    padding: 18px 22px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-bright);
    transition: var(--transition);
}

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

.faq-question .arrow {
    transition: transform 0.3s ease;
    color: var(--accent);
    font-size: 1.2rem;
}

.faq-item.active .faq-question .arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-answer-inner {
    padding: 0 22px 18px;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.8;
}

/* === 联系我们 === */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.contact-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(61, 90, 30, 0.25);
}

.contact-card img {
    width: 140px;
    height: 140px;
    margin: 0 auto 16px;
    border-radius: var(--radius);
}

.contact-card h4 {
    color: var(--text-bright);
    font-size: 1rem;
    margin-bottom: 6px;
}

.contact-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* === 面包屑 === */
.breadcrumb {
    padding: 14px 0;
    margin-top: 68px;
}

.breadcrumb a {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb span {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin: 0 6px;
}

.breadcrumb .current {
    color: var(--accent);
}

/* === 页脚 === */
.site-footer {
    background: var(--primary-dark);
    border-top: 1px solid rgba(61, 90, 30, 0.3);
    padding: 50px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 35px;
}

.footer-brand img {
    height: 40px;
    margin-bottom: 14px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 12px;
}

.footer-col h4 {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    font-size: 0.88rem;
    padding: 4px 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(61, 90, 30, 0.2);
    padding: 18px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.footer-bottom a {
    color: var(--accent);
}

/* === 内页标题区 === */
.page-hero {
    background: var(--gradient-hero);
    padding: 100px 0 50px;
    text-align: center;
    margin-top: 68px;
}

.page-hero h1 {
    font-size: 2.2rem;
    color: var(--text-bright);
    margin-bottom: 12px;
}

.page-hero p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* === 标签云 === */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
    justify-content: center;
}

.tag-cloud a {
    background: rgba(61, 90, 30, 0.3);
    color: var(--text-muted);
    padding: 5px 14px;
    border-radius: 16px;
    font-size: 0.82rem;
    border: 1px solid rgba(61, 90, 30, 0.3);
    transition: var(--transition);
}

.tag-cloud a:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* === 懒加载 === */
.lazy-img {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-img.loaded {
    opacity: 1;
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .expert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .ai-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: fixed;
        top: 68px;
        left: 0;
        width: 100%;
        background: rgba(18, 26, 14, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        border-bottom: 1px solid var(--border-color);
    }

    .main-nav.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .nav-search {
        display: none;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-section {
        min-height: 400px;
    }

    .video-grid {
        grid-template-columns: 1fr;
    }

    .expert-grid {
        grid-template-columns: 1fr 1fr;
    }

    .community-items {
        grid-template-columns: repeat(2, 1fr);
    }

    .review-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .section-title h2 {
        font-size: 1.5rem;
    }

    .section-block {
        padding: 40px 0;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

    .expert-grid {
        grid-template-columns: 1fr;
    }

    .community-items {
        grid-template-columns: 1fr;
    }

    .header-inner {
        height: 58px;
    }

    .hero-section {
        margin-top: 58px;
    }

    .breadcrumb {
        margin-top: 58px;
    }

    .page-hero {
        margin-top: 58px;
        padding: 80px 0 40px;
    }
}