/* 核心变量 */
        :root {
            --primary-gradient: linear-gradient(45deg, #0088ff, #00c6ff);
            --hover-gradient: linear-gradient(45deg, #00c6ff, #0088ff);
            --bg-gradient: linear-gradient(120deg, #e0f2ff, #f0f7ff);
            --card-bg: rgba(255, 255, 255, 0.9);
            --shadow-sm: 0 2px 8px rgba(0, 136, 255, 0.1);
            --shadow-md: 0 4px 12px rgba(0, 136, 255, 0.15);
            --shadow-lg: 0 8px 24px rgba(0, 136, 255, 0.2);
            --border-color: rgba(0, 136, 255, 0.1);
            --text-primary: #202124;
            --text-secondary: #5f6368;
        }

        /* 重置样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-gradient);
            min-height: 100vh;
            overflow-x: hidden;
        }

        /* 通用动画 */
        @keyframes gradientFlow {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }

        @keyframes floating {
            0% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
            100% {
                transform: translateY(0);
            }
        }

        @keyframes shine {
            0% {
                background-position: -100% 50%;
            }
            100% {
                background-position: 200% 50%;
            }
        }

        /* PC端样式 */
        .pc-container {
            display: none;
            min-height: 100vh;
            position: relative;
            overflow: hidden;
        }

        .pc-background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            overflow: hidden;
            pointer-events: none;
        }

        .gradient-bg {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 500%;
            height: 500%;
            background: linear-gradient(
                45deg,
                rgba(0, 136, 255, 0.25),
                rgba(0, 198, 255, 0.25),
                rgba(0, 136, 255, 0.25)
            );
            animation: gradientMove 12s ease infinite;
            transform-origin: center;
        }

        .floating-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }

        .shape {
            position: absolute;
            background: linear-gradient(45deg, rgba(0, 136, 255, 0.25), rgba(0, 198, 255, 0.25));
            border-radius: 50%;
            filter: blur(80px);
            animation: float 20s infinite;
            pointer-events: none;
        }

        .shape:nth-child(1) {
            width: 800px;
            height: 800px;
            top: 10%;
            left: 10%;
            animation: float1 15s ease-in-out infinite;
        }

        .shape:nth-child(2) {
            width: 900px;
            height: 900px;
            top: 60%;
            left: 70%;
            animation: float2 20s ease-in-out infinite;
        }

        .shape:nth-child(3) {
            width: 700px;
            height: 700px;
            top: 40%;
            left: 30%;
            animation: float3 18s ease-in-out infinite;
        }

        .shape:nth-child(4) {
            width: 850px;
            height: 850px;
            top: 20%;
            left: 80%;
            animation: float4 25s ease-in-out infinite;
        }

        .shape:nth-child(5) {
            width: 750px;
            height: 750px;
            top: 70%;
            left: 20%;
            animation: float5 22s ease-in-out infinite;
        }

        .shape:nth-child(6) {
            width: 800px;
            height: 800px;
            top: 30%;
            left: 60%;
            animation: float6 17s ease-in-out infinite;
        }

        .light-effect {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(
                circle at 50% 50%,
                rgba(0, 136, 255, 0.4) 0%,
                transparent 70%
            );
            animation: lightPulse 6s ease-in-out infinite;
            pointer-events: none;
        }

        .pc-content {
            position: relative;
            z-index: 1;
            padding: 120px 40px 100px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .pc-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 40px;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
        }

        .pc-header-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .pc-header-logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .pc-header-logo img {
            height: 40px;
            width: auto;
            transition: transform 0.3s ease;
        }

        .pc-header-logo img:hover {
            transform: scale(1.05);
        }

        .pc-header-right {
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .pc-header-link {
            color: var(--text-primary);
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .pc-header-link:hover {
            color: #0088ff;
        }

        .pc-logo {
            height: 48px;
            width: auto;
            transition: transform 0.3s ease;
        }

        .pc-logo:hover {
            transform: scale(1.05);
        }

        .header-meta-logo {
            height: 36px;
            width: auto;
            filter: brightness(0) invert(1);
            opacity: 0.9;
            transition: opacity 0.3s ease;
        }

        .header-meta-logo:hover {
            opacity: 1;
        }

        .pc-hero {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 60px;
            margin-bottom: 80px;
        }

        .pc-hero-left {
            flex: 1;
            text-align: left;
            max-width: 600px;
        }

        .pc-hero-title {
            font-size: 48px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .pc-hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .pc-hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .pc-stat-item {
            text-align: center;
        }

        .pc-stat-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .pc-stat-label {
            font-size: 16px;
            color: var(--text-secondary);
        }

        .pc-hero-right {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding-top: 20px;
        }

        .pc-qr-section {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            width: 100%;
            max-width: 400px;
            box-shadow: var(--shadow-md);
        }

        .messenger-logo-large {
            width: 80px;
            height: 80px;
            margin-bottom: 20px;
        }

        .qr-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .qr-code {
            width: 180px;
            height: 180px;
            margin: 0 auto 20px;
            padding: 10px;
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        #qrcode {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        #qrcode img {
            display: block;
            margin: 0 auto;
        }

        #qrcode img:nth-child(2) {
            display: none!important;
        }

        .qr-desc {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }

        .pc-screenshot-section {
            width: 100%;
            padding: 60px 0;
            position: relative;
        }

        .pc-screenshot-container {
            position: relative;
            width: 100%;
            height: 0;
            padding-bottom: 56.25%; /* 16:9 比例 (2160/3840 = 0.5625) */
            overflow: hidden;
            border-radius: 15px;
            box-shadow: var(--shadow-lg);
        }

        .pc-screenshot-slider {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            transition: transform 0.5s ease;
        }

        .pc-screenshot-item {
            flex: 0 0 100%;
            height: 100%;
            position: relative;
            width: 100%;
        }

        .pc-screenshot-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
        }

        .pc-screenshot-nav {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 10;
        }

        .pc-screenshot-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .pc-screenshot-dot.active {
            background: #fff;
            transform: scale(1.2);
        }

        .pc-screenshot-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 50px;
            height: 50px;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 10;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .pc-screenshot-arrow:hover {
            background: #fff;
            transform: translateY(-50%) scale(1.1);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
        }

        .pc-screenshot-prev {
            left: 20px;
        }

        .pc-screenshot-next {
            right: 20px;
        }

        .pc-screenshot-arrow svg {
            width: 24px;
            height: 24px;
            fill: var(--text-primary);
        }

        .pc-features-section {
            width: 100%;
            padding: 60px 0;
            position: relative;
        }

        .pc-feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .pc-feature-card {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            padding: 30px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .pc-feature-card:hover {
            transform: translateY(-5px);
        }

        .pc-section-title {
            font-size: 32px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 30px;
            text-align: center;
        }

        .pc-footer {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px 40px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            display: flex;
            justify-content: space-between;
            align-items: center;
            z-index: 1000;
            border-top: 1px solid var(--border-color);
        }

        .pc-footer-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .pc-footer-logo {
            height: 30px;
            width: auto;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }

        .pc-footer-logo:hover {
            opacity: 1;
        }

        .pc-footer-right {
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .pc-footer-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .pc-footer-link:hover {
            color: var(--text-primary);
        }

        .pc-copyright {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 15px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 14px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-color);
            z-index: 999;
            margin-top: 80px;
        }

        /* 移动端样式 */
        .mobile-container {
            display: none;
            min-height: 100vh;
            background: var(--bg-gradient);
            position: relative;
        }

        .mobile-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-logo {
            height: 40px;
            width: auto;
        }

        .main-content {
            padding-top: 60px;
            padding-bottom: 80px;
        }

        .app-hero {
            padding: 30px 20px;
            text-align: center;
            background: linear-gradient(180deg, rgba(224, 242, 255, 0.9) 0%, rgba(240, 247, 255, 0.6) 100%);
            position: relative;
            margin-bottom: 15px;  /* 减小底部间距 */
        }

        .screenshot-section {
            padding: 20px 0;  /* 减小内边距 */
            background: #fff;
            margin-bottom: 20px;  /* 减小底部间距 */
        }
        .app-info {
            display: inline-flex;
            align-items: center;
            gap: 20px;
            padding: 20px;
            background: var(--card-bg);
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            margin-bottom: 30px;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .app-info:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .app-icon {
            width: 80px;
            height: 80px;
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
        }

        .app-details {
            text-align: left;
        }

        .app-name {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .app-developer {
            color: #0088ff;
            font-size: 14px;
            margin-bottom: 4px;
        }

        .app-meta {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .app-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            padding: 0 20px;
            margin-bottom: 30px;
        }

        .stat-card {
            background: var(--card-bg);
            padding: 15px;
            border-radius: 15px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .stat-value {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .screenshot-section {
            padding: 30px 0;
            background: #fff;
            margin-bottom: 30px;
        }

        .section-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 20px;
            padding: 0 20px;
        }

        .screenshot-scroll {
            display: flex;
            gap: 15px;
            padding: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .screenshot-scroll::-webkit-scrollbar {
            display: none;
        }

        .screenshot-item {
            flex: 0 0 auto;
            width: 200px;
            height: 356px; /* 9:16 比例 */
            scroll-snap-align: start;
            position: relative;
            cursor: pointer;
        }

        .screenshot-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 15px;
            box-shadow: var(--shadow-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .screenshot-item:hover .screenshot-img {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .features-section {
            padding: 30px 20px;
            background: linear-gradient(180deg, #fff 0%, var(--bg-gradient) 100%);
        }

        .feature-grid {
            display: grid;
            gap: 20px;
        }

        .feature-card {
            background: var(--card-bg);
            padding: 20px;
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: flex-start;
            gap: 20px;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 15px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .feature-icon svg {
            width: 45px;
            height: 45px;
            fill: #fff;
            display: block;  /* 防止图标变形 */
        }

        .feature-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .feature-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .mobile-footer {
            padding: 40px 20px;
            text-align: center;
            background: linear-gradient(180deg, var(--bg-gradient) 0%, #fff 100%);
        }

        .footer-logo-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        .mobile-footer-logo {
            height: 30px;
            width: auto;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }

        .mobile-footer-logo:hover {
            opacity: 1;
        }

        .mobile-footer-text {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* 更新移动端footer样式 */
        .mobile-footer {
            padding: 30px 20px;
            text-align: center;
            background: linear-gradient(180deg, var(--bg-gradient) 0%, #fff 100%);
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .footer-link {
            color: var(--text-secondary);
            font-size: 13px;
            text-decoration: none;
        }

        .footer-legal {
            text-align: center;
            color: var(--text-secondary);
            font-size: 13px;
            line-height: 1.6;
            margin-top: 20px;
        }

        .floating-bar {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            padding: 15px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            z-index: 1000;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            width: 90%;
            max-width: 400px;
        }

        .floating-bar-left {
            display: flex;
            align-items: center;
            gap: 15px;
            white-space: nowrap;
        }

        .floating-bar-logo {
            width: 40px;
            height: 40px;
            object-fit: contain;
        }

        .floating-bar-text {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
        }

        .download-btn {
            padding: 12px 30px;
            border: none;
            border-radius: 25px;
            font-size: 16px;
            font-weight: 600;
            color: white;
            background-size: 200% 200%;
            background-image: var(--primary-gradient);
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .download-btn::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to right,
                transparent,
                rgba(255, 255, 255, 0.3),
                transparent
            );
            transform: rotate(45deg);
            animation: shine 3s infinite;
        }

        .download-btn:hover {
            background-image: var(--hover-gradient);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 136, 255, 0.3);
        }

        .download-btn:active {
            transform: translateY(0);
        }

        /* 媒体查询 */
        @media screen and (min-width: 1000px) {
            .pc-container {
                display: block;
            }
            .mobile-container {
                display: none;
            }
        }

        @media screen and (max-width: 1000px) {
            .pc-container {
                display: none;
            }
            .mobile-container {
                display: block;
            }
        }

        @media (max-width: 1200px) {
            .pc-content {
                padding: 100px 30px 80px;
            }

            .pc-hero {
                gap: 40px;
            }

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

        @media (max-width: 768px) {
            .pc-container {
                display: none;
            }

            .mobile-container {
                display: block;
            }
        }

        @media (max-width: 480px) {
            .pc-content {
                padding: 80px 20px 60px;
            }

            .pc-hero {
                flex-direction: column;
                text-align: center;
                gap: 30px;
            }

            .pc-hero-left {
                max-width: 100%;
            }

            .pc-feature-grid {
                grid-template-columns: 1fr;
            }
        }

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.5;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 30px;
        }

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

        .stat-value {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .gradient-btn {
            padding: 16px 40px;
            width: 100%;
            font-size: 18px;
            font-weight: 600;
            color: white;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            background-size: 300% 300%;
            background-image: linear-gradient(
                45deg,
                #0088ff,
                #00c6ff,
                #0088ff,
                #00a2ff,
                #0088ff
            );
            animation: gradientFlow 8s ease infinite;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 136, 255, 0.3);
        }

        .gradient-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 136, 255, 0.4);
        }

        .btn-shine {
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to right,
                transparent,
                rgba(255, 255, 255, 0.3),
                transparent
            );
            transform: rotate(45deg);
            animation: shine 3s infinite;
        }

        .gradient-download-btn {
            padding: 20px 50px;
            width: 85%;
            max-width: 320px;
            font-size: 22px;
            font-weight: 700;
            color: white;
            border: none;
            border-radius: 35px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            background-size: 300% 300%;
            background-image: linear-gradient(
                45deg,
                #0088ff,
                #00c6ff,
                #0088ff,
                #00a2ff,
                #0088ff
            );
            animation: gradientFlow 8s ease infinite;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 136, 255, 0.3);
            margin: 20px auto;
        }

        .gradient-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 136, 255, 0.4);
        }

        .btn-shine {
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to right,
                transparent,
                rgba(255, 255, 255, 0.3),
                transparent
            );
            transform: rotate(45deg);
            animation: shine 3s infinite;
        }

        @keyframes shine {
            0% {
                transform: translateX(-100%) rotate(45deg);
            }
            100% {
                transform: translateX(100%) rotate(45deg);
            }
        }

        @keyframes gradientFlow {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }

        /* 图片预览模态框 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 2000;
            cursor: pointer;
        }

        .modal-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            max-width: 90%;
            max-height: 90vh;
        }

        .modal-img {
            width: 100%;
            height: auto;
            object-fit: contain;
        }

        /* 新增动画效果 */
        @keyframes float1 {
            0%, 100% {
                transform: translate(0, 0) rotate(0deg) scale(1);
                opacity: 0.8;
            }
            25% {
                transform: translate(200px, 100px) rotate(90deg) scale(1.3);
                opacity: 1;
            }
            50% {
                transform: translate(100px, 200px) rotate(180deg) scale(1);
                opacity: 0.8;
            }
            75% {
                transform: translate(-100px, 100px) rotate(270deg) scale(0.7);
                opacity: 1;
            }
        }

        @keyframes float2 {
            0%, 100% {
                transform: translate(0, 0) rotate(0deg) scale(1);
                opacity: 0.7;
            }
            33% {
                transform: translate(-200px, -100px) rotate(120deg) scale(1.4);
                opacity: 1;
            }
            66% {
                transform: translate(100px, -200px) rotate(240deg) scale(0.6);
                opacity: 0.7;
            }
        }

        @keyframes float3 {
            0%, 100% {
                transform: translate(0, 0) rotate(0deg) scale(1);
                opacity: 0.8;
            }
            50% {
                transform: translate(-200px, 200px) rotate(180deg) scale(1.5);
                opacity: 1;
            }
        }

        @keyframes float4 {
            0%, 100% {
                transform: translate(0, 0) rotate(0deg) scale(1);
                opacity: 0.7;
            }
            25% {
                transform: translate(300px, -100px) rotate(90deg) scale(1.3);
                opacity: 1;
            }
            50% {
                transform: translate(100px, 300px) rotate(180deg) scale(0.7);
                opacity: 0.7;
            }
            75% {
                transform: translate(-200px, 100px) rotate(270deg) scale(1.2);
                opacity: 1;
            }
        }

        @keyframes float5 {
            0%, 100% {
                transform: translate(0, 0) rotate(0deg) scale(1);
                opacity: 0.8;
            }
            33% {
                transform: translate(-300px, 100px) rotate(120deg) scale(1.4);
                opacity: 1;
            }
            66% {
                transform: translate(200px, -200px) rotate(240deg) scale(0.6);
                opacity: 0.8;
            }
        }

        @keyframes float6 {
            0%, 100% {
                transform: translate(0, 0) rotate(0deg) scale(1);
                opacity: 0.7;
            }
            50% {
                transform: translate(200px, -300px) rotate(180deg) scale(1.5);
                opacity: 1;
            }
        }

        @keyframes gradientMove {
            0% {
                transform: translate(-50%, -50%) rotate(0deg) scale(1);
            }
            50% {
                transform: translate(-50%, -50%) rotate(180deg) scale(1.3);
            }
            100% {
                transform: translate(-50%, -50%) rotate(360deg) scale(1);
            }
        }

        @keyframes lightPulse {
            0%, 100% {
                opacity: 0.7;
                transform: scale(1);
            }
            50% {
                opacity: 1;
                transform: scale(1.8);
            }
        }

        /* 新增动态粒子效果 */
        .particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }

        .particle {
            position: absolute;
            background: rgba(0, 136, 255, 0.4);
            border-radius: 50%;
            pointer-events: none;
            animation: particleFloat 15s infinite linear;
            box-shadow: 0 0 20px rgba(0, 136, 255, 0.3);
        }

        .particle:nth-child(1) { width: 12px; height: 12px; top: 20%; left: 10%; animation-delay: 0s; }
        .particle:nth-child(2) { width: 16px; height: 16px; top: 60%; left: 20%; animation-delay: -2s; }
        .particle:nth-child(3) { width: 10px; height: 10px; top: 40%; left: 30%; animation-delay: -4s; }
        .particle:nth-child(4) { width: 14px; height: 14px; top: 80%; left: 40%; animation-delay: -6s; }
        .particle:nth-child(5) { width: 12px; height: 12px; top: 30%; left: 50%; animation-delay: -8s; }
        .particle:nth-child(6) { width: 16px; height: 16px; top: 70%; left: 60%; animation-delay: -10s; }
        .particle:nth-child(7) { width: 10px; height: 10px; top: 50%; left: 70%; animation-delay: -12s; }
        .particle:nth-child(8) { width: 14px; height: 14px; top: 20%; left: 80%; animation-delay: -14s; }

        @keyframes particleFloat {
            0% {
                transform: translate(0, 0) rotate(0deg);
                opacity: 0;
            }
            25% {
                transform: translate(200px, 200px) rotate(90deg);
                opacity: 1;
            }
            50% {
                transform: translate(400px, 0) rotate(180deg);
                opacity: 0.5;
            }
            75% {
                transform: translate(200px, -200px) rotate(270deg);
                opacity: 1;
            }
            100% {
                transform: translate(0, 0) rotate(360deg);
                opacity: 0;
            }
        }