/* ============================================
   国产自拍 - 精选动漫影视创作平台
   原创CSS样式 | pvimsyuu.cn
   配色：深紫#6C3CE1 活力橙#FF6B35 薄荷绿#00D4AA
   ============================================ */

/* === 基础重置与变量 === */
:root {
    --primary: #6C3CE1;
    --primary-dark: #5A2DC5;
    --secondary: #FF6B35;
    --accent: #00D4AA;
    --bg-dark: #0F0A1E;
    --bg-light: #F8F6FF;
    --bg-card: #1A1230;
    --text-main: #2D1B4E;
    --text-sub: #8B7FA8;
    --text-light: #C4BBD9;
    --border: #2A1F45;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(108,60,225,0.12);
}

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

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

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

a { color: var(--accent); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--secondary); }

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* === 顶部导航 === */
.sv-header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(15,10,30,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.sv-header-inner {
    display: flex; align-items: center; justify-content: space-between;
    max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 68px;
}

.sv-logo { display: flex; align-items: center; gap: 10px; }
.sv-logo img { height: 42px; width: auto; }
.sv-logo-text { font-size: 1.4rem; font-weight: 700; color: #fff; }
.sv-logo-text span { color: var(--secondary); }

.sv-nav { display: flex; align-items: center; gap: 0; }
.sv-nav a {
    color: var(--text-light); padding: 8px 16px; font-size: 0.95rem;
    border-radius: 8px; transition: all 0.3s; white-space: nowrap;
}
.sv-nav a:hover, .sv-nav a.active {
    color: #fff; background: rgba(108,60,225,0.25);
}

.sv-search-box {
    position: relative; width: 220px;
}
.sv-search-box input {
    width: 100%; padding: 8px 36px 8px 14px; border-radius: 20px;
    border: 1px solid var(--border); background: rgba(255,255,255,0.06);
    color: #fff; font-size: 0.88rem; outline: none; transition: all 0.3s;
}
.sv-search-box input:focus { border-color: var(--primary); background: rgba(108,60,225,0.1); }
.sv-search-box input::placeholder { color: var(--text-sub); }
.sv-search-btn {
    position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
    background: var(--primary); border: none; color: #fff; width: 30px; height: 30px;
    border-radius: 50%; cursor: pointer; font-size: 0.85rem; display: flex;
    align-items: center; justify-content: center; transition: background 0.3s;
}
.sv-search-btn:hover { background: var(--secondary); }

.sv-menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* === Hero Banner === */
.sv-hero {
    position: relative; min-height: 520px; display: flex; align-items: center;
    margin-top: 68px; overflow: hidden;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1A0F35 50%, var(--bg-dark) 100%);
}
.sv-hero-bg {
    position: absolute; inset: 0; z-index: 0;
}
.sv-hero-bg img {
    width: 100%; height: 100%; object-fit: cover; opacity: 0.35;
}
.sv-hero-content {
    position: relative; z-index: 2; max-width: 640px; padding: 60px 0;
}
.sv-hero h1 {
    font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.3; margin-bottom: 16px;
}
.sv-hero h1 em { font-style: normal; color: var(--secondary); }
.sv-hero .sv-hero-desc {
    font-size: 1.1rem; color: var(--text-light); margin-bottom: 28px; line-height: 1.8;
}
.sv-hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.sv-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: 30px; font-size: 1rem; font-weight: 600;
    cursor: pointer; transition: all 0.3s; border: none;
}
.sv-btn-primary { background: var(--primary); color: #fff; }
.sv-btn-primary:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,107,53,0.3); }
.sv-btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.sv-btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* === 通用Section === */
.sv-section { padding: 70px 0; }
.sv-section-alt { background: rgba(108,60,225,0.04); }

.sv-section-header {
    text-align: center; margin-bottom: 48px;
}
.sv-section-header h2 {
    font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: 12px;
}
.sv-section-header h2 span { color: var(--secondary); }
.sv-section-header p {
    font-size: 1.05rem; color: var(--text-sub); max-width: 600px; margin: 0 auto;
}
.sv-tag {
    display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.8rem;
    background: rgba(108,60,225,0.15); color: var(--primary); margin-bottom: 12px;
    font-weight: 600; letter-spacing: 1px;
}

/* === 视频卡片网格 === */
.sv-video-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.sv-video-card {
    position: relative; border-radius: var(--radius); overflow: hidden;
    background: var(--bg-card); transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}
.sv-video-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(108,60,225,0.2); }

.sv-video-thumb {
    position: relative; padding-top: 56.25%; overflow: hidden;
}
.sv-video-thumb img {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s;
}
.sv-video-card:hover .sv-video-thumb img { transform: scale(1.08); }

.sv-play-btn {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0);
    width: 56px; height: 56px; border-radius: 50%;
    background: rgba(108,60,225,0.9); display: flex; align-items: center; justify-content: center;
    transition: transform 0.3s, background 0.3s; z-index: 2;
}
.sv-play-btn::after {
    content: ''; width: 0; height: 0;
    border-left: 18px solid #fff; border-top: 11px solid transparent; border-bottom: 11px solid transparent;
    margin-left: 4px;
}
.sv-video-card:hover .sv-play-btn { transform: translate(-50%, -50%) scale(1); }
.sv-play-btn:hover { background: var(--secondary); }

.sv-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;
}

.sv-video-info { padding: 14px 16px; }
.sv-video-title {
    font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 8px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.sv-video-meta {
    display: flex; align-items: center; gap: 14px; font-size: 0.8rem; color: var(--text-sub);
}
.sv-video-meta span { display: flex; align-items: center; gap: 4px; }

.sv-video-tags { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.sv-video-tags span {
    padding: 2px 10px; border-radius: 12px; font-size: 0.72rem;
    background: rgba(108,60,225,0.12); color: var(--primary);
}

/* === 影视传媒模块 === */
.sv-media-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.sv-media-card {
    background: var(--bg-card); border-radius: var(--radius); padding: 28px 20px;
    text-align: center; transition: all 0.3s; border: 1px solid transparent;
}
.sv-media-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.sv-media-icon {
    width: 56px; height: 56px; border-radius: 14px; margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.sv-media-card h4 { font-size: 1.05rem; color: #fff; margin-bottom: 8px; }
.sv-media-card p { font-size: 0.85rem; color: var(--text-sub); line-height: 1.6; }

/* === 娱乐专区 === */
.sv-ent-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.sv-ent-card {
    display: flex; gap: 20px; background: var(--bg-card); border-radius: var(--radius);
    padding: 24px; transition: all 0.3s; align-items: center;
}
.sv-ent-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.sv-ent-icon {
    flex-shrink: 0; width: 64px; height: 64px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center; font-size: 1.8rem;
    background: linear-gradient(135deg, var(--secondary), #FF9A5C);
}
.sv-ent-card h4 { font-size: 1rem; color: #fff; margin-bottom: 6px; }
.sv-ent-card p { font-size: 0.85rem; color: var(--text-sub); }

/* === AI赋能 === */
.sv-ai-section {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.sv-ai-features { display: flex; flex-direction: column; gap: 20px; }
.sv-ai-item {
    display: flex; gap: 16px; padding: 20px; background: var(--bg-card);
    border-radius: var(--radius); transition: all 0.3s;
}
.sv-ai-item:hover { box-shadow: var(--shadow); }
.sv-ai-num {
    flex-shrink: 0; width: 40px; height: 40px; border-radius: 10px;
    background: var(--primary); color: #fff; display: flex; align-items: center;
    justify-content: center; font-weight: 700; font-size: 1.1rem;
}
.sv-ai-item h4 { font-size: 0.95rem; color: #fff; margin-bottom: 4px; }
.sv-ai-item p { font-size: 0.85rem; color: var(--text-sub); }
.sv-ai-img { border-radius: var(--radius); overflow: hidden; }
.sv-ai-img img { width: 100%; border-radius: var(--radius); }

/* === 社区功能 === */
.sv-community-banner {
    position: relative; border-radius: var(--radius); overflow: hidden; margin-bottom: 32px;
}
.sv-community-banner img { width: 100%; height: 280px; object-fit: cover; }
.sv-community-overlay {
    position: absolute; inset: 0; background: linear-gradient(to right, rgba(15,10,30,0.85), transparent);
    display: flex; align-items: center; padding: 0 48px;
}
.sv-community-overlay h3 { font-size: 1.8rem; color: #fff; }
.sv-community-overlay h3 span { color: var(--accent); }

.sv-community-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.sv-community-card {
    background: var(--bg-card); border-radius: var(--radius); padding: 24px;
    text-align: center; transition: all 0.3s; border: 1px solid var(--border);
}
.sv-community-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.sv-community-card .icon {
    font-size: 2rem; margin-bottom: 12px; display: block;
}
.sv-community-card h4 { font-size: 1rem; color: #fff; margin-bottom: 6px; }
.sv-community-card p { font-size: 0.83rem; color: var(--text-sub); }

/* === 专家展示 === */
.sv-expert-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.sv-expert-card {
    background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
    text-align: center; transition: all 0.3s;
}
.sv-expert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.sv-expert-avatar {
    width: 100%; height: 220px; overflow: hidden;
}
.sv-expert-avatar img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.sv-expert-card:hover .sv-expert-avatar img { transform: scale(1.05); }
.sv-expert-info { padding: 18px 16px; }
.sv-expert-info h4 { font-size: 1.05rem; color: #fff; margin-bottom: 4px; }
.sv-expert-info .role { font-size: 0.83rem; color: var(--secondary); margin-bottom: 8px; }
.sv-expert-info p { font-size: 0.8rem; color: var(--text-sub); margin-bottom: 12px; }
.sv-expert-btns { display: flex; gap: 8px; justify-content: center; }
.sv-expert-btns a {
    padding: 6px 14px; border-radius: 16px; font-size: 0.78rem; font-weight: 600;
}
.sv-expert-btns .btn-contact { background: var(--primary); color: #fff; }
.sv-expert-btns .btn-works { background: rgba(0,212,170,0.12); color: var(--accent); }

/* === 合作品牌 === */
.sv-partners-wall {
    display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; align-items: center;
}
.sv-partner-item {
    width: 140px; height: 70px; background: var(--bg-card); border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border); transition: all 0.3s;
    font-size: 0.9rem; color: var(--text-sub); font-weight: 600;
}
.sv-partner-item:hover { border-color: var(--primary); color: #fff; }

/* === 用户评论 === */
.sv-reviews-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
.sv-review-card {
    background: var(--bg-card); border-radius: var(--radius); padding: 24px;
    border-left: 3px solid var(--primary); transition: all 0.3s;
}
.sv-review-card:hover { box-shadow: var(--shadow); }
.sv-review-stars { color: var(--secondary); font-size: 0.9rem; margin-bottom: 10px; }
.sv-review-text { font-size: 0.9rem; color: var(--text-light); margin-bottom: 14px; line-height: 1.7; }
.sv-review-author { display: flex; align-items: center; gap: 10px; }
.sv-review-author .avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 0.85rem; font-weight: 700;
}
.sv-review-author .name { font-size: 0.85rem; color: #fff; }
.sv-review-author .date { font-size: 0.75rem; color: var(--text-sub); }

/* === FAQ === */
.sv-faq-list { max-width: 800px; margin: 0 auto; }
.sv-faq-item {
    background: var(--bg-card); border-radius: var(--radius); margin-bottom: 12px;
    overflow: hidden; border: 1px solid var(--border); transition: all 0.3s;
}
.sv-faq-item:hover { border-color: var(--primary); }
.sv-faq-q {
    padding: 18px 24px; cursor: pointer; display: flex; justify-content: space-between;
    align-items: center; font-size: 0.95rem; color: #fff; font-weight: 600;
    user-select: none;
}
.sv-faq-q::after { content: '+'; font-size: 1.3rem; color: var(--primary); transition: transform 0.3s; }
.sv-faq-item.active .sv-faq-q::after { transform: rotate(45deg); }
.sv-faq-a {
    padding: 0 24px; max-height: 0; overflow: hidden; transition: all 0.4s;
}
.sv-faq-item.active .sv-faq-a { padding: 0 24px 18px; max-height: 300px; }
.sv-faq-a p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.7; }

/* === 联系我们 === */
.sv-contact-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.sv-contact-info h3 { font-size: 1.4rem; color: #fff; margin-bottom: 20px; }
.sv-contact-item {
    display: flex; gap: 14px; margin-bottom: 18px; align-items: flex-start;
}
.sv-contact-item .icon {
    flex-shrink: 0; width: 40px; height: 40px; border-radius: 10px;
    background: rgba(108,60,225,0.15); display: flex; align-items: center;
    justify-content: center; font-size: 1.1rem;
}
.sv-contact-item .label { font-size: 0.8rem; color: var(--text-sub); }
.sv-contact-item .value { font-size: 0.95rem; color: #fff; }
.sv-contact-qr {
    display: flex; gap: 24px; justify-content: center; align-items: flex-start;
}
.sv-qr-item { text-align: center; }
.sv-qr-item img { width: 160px; height: 160px; border-radius: 10px; margin-bottom: 8px; }
.sv-qr-item p { font-size: 0.85rem; color: var(--text-sub); }

/* === 页脚 === */
.sv-footer {
    background: #080515; border-top: 1px solid var(--border); padding: 40px 0 20px;
}
.sv-footer-top {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px;
}
.sv-footer-brand .logo { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.sv-footer-brand .logo img { height: 36px; }
.sv-footer-brand .logo span { font-size: 1.2rem; font-weight: 700; color: #fff; }
.sv-footer-brand p { font-size: 0.85rem; color: var(--text-sub); line-height: 1.7; }
.sv-footer-col h5 { font-size: 0.95rem; color: #fff; margin-bottom: 14px; }
.sv-footer-col a { display: block; font-size: 0.85rem; color: var(--text-sub); padding: 4px 0; }
.sv-footer-col a:hover { color: var(--accent); }

.sv-footer-share { display: flex; gap: 10px; margin-top: 16px; }
.sv-footer-share a {
    width: 36px; height: 36px; border-radius: 50%; background: rgba(108,60,225,0.15);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-light); font-size: 0.9rem; transition: all 0.3s;
}
.sv-footer-share a:hover { background: var(--primary); color: #fff; }

.sv-footer-bottom {
    border-top: 1px solid var(--border); padding-top: 20px;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.8rem; color: var(--text-sub); flex-wrap: wrap; gap: 10px;
}

/* === How-To指南 === */
.sv-howto-steps {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.sv-howto-step {
    text-align: center; padding: 28px 16px; background: var(--bg-card);
    border-radius: var(--radius); position: relative;
}
.sv-howto-step .step-num {
    width: 44px; height: 44px; border-radius: 50%; background: var(--primary);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 700; margin: 0 auto 14px;
}
.sv-howto-step h4 { font-size: 0.95rem; color: #fff; margin-bottom: 6px; }
.sv-howto-step p { font-size: 0.82rem; color: var(--text-sub); }

/* === 回到顶部 === */
.sv-back-top {
    position: fixed; bottom: 30px; right: 30px; width: 44px; height: 44px;
    border-radius: 50%; background: var(--primary); color: #fff; border: none;
    cursor: pointer; font-size: 1.2rem; display: none; align-items: center;
    justify-content: center; z-index: 999; transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(108,60,225,0.3);
}
.sv-back-top:hover { background: var(--secondary); transform: translateY(-3px); }
.sv-back-top.show { display: flex; }

/* === 面包屑 === */
.sv-breadcrumb {
    padding: 14px 0; font-size: 0.85rem; color: var(--text-sub);
}
.sv-breadcrumb a { color: var(--text-sub); }
.sv-breadcrumb a:hover { color: var(--accent); }
.sv-breadcrumb span { margin: 0 8px; }

/* === 内页通用 === */
.sv-page-hero {
    margin-top: 68px; padding: 48px 0; text-align: center;
    background: linear-gradient(135deg, var(--bg-dark), #1A0F35);
}
.sv-page-hero h1 { font-size: 2.2rem; color: #fff; margin-bottom: 10px; }
.sv-page-hero p { font-size: 1rem; color: var(--text-sub); }

.sv-content-section { padding: 48px 0; }
.sv-content-section h2 { font-size: 1.6rem; color: #fff; margin-bottom: 16px; }
.sv-content-section h3 { font-size: 1.3rem; color: #fff; margin-bottom: 12px; }
.sv-content-section p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 16px; line-height: 1.8; }

/* === 搜索弹窗 === */
.sv-search-modal {
    display: none; position: fixed; inset: 0; z-index: 2000;
    background: rgba(15,10,30,0.95); align-items: flex-start; justify-content: center;
    padding-top: 120px;
}
.sv-search-modal.active { display: flex; }
.sv-search-modal-inner { width: 100%; max-width: 600px; padding: 0 20px; }
.sv-search-modal input {
    width: 100%; padding: 16px 24px; border-radius: 12px; border: 2px solid var(--primary);
    background: var(--bg-card); color: #fff; font-size: 1.1rem; outline: none;
}
.sv-search-modal .sv-search-hint {
    margin-top: 16px; text-align: center; color: var(--text-sub); font-size: 0.88rem;
}
.sv-search-close {
    position: absolute; top: 30px; right: 30px; background: none; border: none;
    color: #fff; font-size: 2rem; cursor: pointer;
}

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

@media (max-width: 768px) {
    .sv-nav { display: none; position: fixed; top: 68px; left: 0; width: 100%;
        background: var(--bg-dark); flex-direction: column; padding: 20px;
        border-bottom: 1px solid var(--border); gap: 4px;
    }
    .sv-nav.active { display: flex; }
    .sv-menu-toggle { display: block; }
    .sv-search-box { width: 160px; }

    .sv-hero h1 { font-size: 1.8rem; }
    .sv-hero { min-height: 400px; }
    .sv-hero-content { padding: 40px 0; }

    .sv-video-grid { grid-template-columns: 1fr; }
    .sv-media-grid { grid-template-columns: 1fr 1fr; }
    .sv-ent-grid { grid-template-columns: 1fr; }
    .sv-expert-grid { grid-template-columns: 1fr 1fr; }
    .sv-reviews-grid { grid-template-columns: 1fr; }
    .sv-contact-grid { grid-template-columns: 1fr; }
    .sv-community-grid { grid-template-columns: 1fr 1fr; }
    .sv-howto-steps { grid-template-columns: 1fr; }
    .sv-footer-top { grid-template-columns: 1fr; }

    .sv-section-header h2 { font-size: 1.5rem; }
    .sv-section { padding: 48px 0; }
}

@media (max-width: 480px) {
    .sv-media-grid { grid-template-columns: 1fr; }
    .sv-expert-grid { grid-template-columns: 1fr; }
    .sv-community-grid { grid-template-columns: 1fr; }
    .sv-search-box { width: 120px; }
    .sv-hero h1 { font-size: 1.5rem; }
    .sv-contact-qr { flex-direction: column; align-items: center; }
}

/* === 懒加载 === */
img[data-src] { opacity: 0; transition: opacity 0.4s; }
img[data-src].loaded { opacity: 1; }