:root {
        --primary-green: #2e7d32;
        --light-green: #81c784;
        --accent-yellow: #fbc02d;
        --bg-light: #f1f8e9;
        --text-dark: #1b5e20;
        --text-gray: #455a64;
        --purple-theme: #6a1b9a;
        --purple-light: #9c27b0;
    }

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

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

    a {
        text-decoration: none;
        color: inherit;
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* Header & Nav */
    header {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }

    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 70px;
    }

    .logo-box {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: bold;
        font-size: 1.2rem;
        color: var(--primary-green);
    }

    .logo-box img {
        height: 36px;
        width: auto;
        border-radius: 8px;
    }

    .nav-links {
        display: none;
        gap: 20px;
        font-size: 0.95rem;
        font-weight: 500;
    }

    .nav-links a:hover {
        color: var(--primary-green);
    }

    /* Hero Section */
    .hero {
        background: linear-gradient(135deg, #e8f5e9 0%, #fff9c4 100%);
        padding: 60px 0 80px;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: -50px;
        right: -50px;
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(129, 199, 132, 0.4) 0%, transparent 70%);
        border-radius: 50%;
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        gap: 40px;
        align-items: center;
        position: relative;
        z-index: 2;
    }

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

    .hero-text h1 {
        font-size: 2.2rem;
        color: var(--text-dark);
        margin-bottom: 20px;
        line-height: 1.3;
    }

    .hero-text p {
        font-size: 1.1rem;
        color: var(--text-gray);
        margin-bottom: 30px;
    }

    .hero-badges {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
        margin-bottom: 30px;
    }

    .badge {
        background: #fff;
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 0.9rem;
        color: var(--primary-green);
        box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        font-weight: bold;
    }

    .download-group {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .btn-download {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 12px 28px;
        border-radius: 30px;
        font-size: 1rem;
        font-weight: bold;
        color: #fff;
        background: var(--primary-green);
        box-shadow: 0 6px 15px rgba(46, 125, 50, 0.3);
        transition: transform 0.2s, box-shadow 0.2s;
    }

    .btn-download:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(46, 125, 50, 0.4);
    }
    
    .btn-download.android {
        background: linear-gradient(135deg, #4caf50, #2e7d32);
    }

    .btn-download.ios {
        background: linear-gradient(135deg, #fbc02d, #f57f17);
        color: #333;
    }

    .btn-download.pc {
        background: linear-gradient(135deg, #90a4ae, #546e7a);
    }

    .hero-image {
        width: 100%;
        max-width: 400px;
        border-radius: 20px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.15);
        transform: perspective(1000px) rotateY(-5deg);
        transition: transform 0.3s;
    }

    .hero-image:hover {
        transform: perspective(1000px) rotateY(0deg);
    }

    /* Section Common */
    section {
        padding: 80px 0;
    }

    .section-title {
        text-align: center;
        font-size: 2rem;
        color: var(--text-dark);
        margin-bottom: 15px;
        font-weight: 800;
    }

    .section-desc {
        text-align: center;
        color: #666;
        margin-bottom: 50px;
        font-size: 1.05rem;
    }

    /* Parallax Wall (High Energy) */
    .parallax-wall {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        perspective: 1000px;
    }

    .parallax-card {
        background: #fff;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s;
        transform-style: preserve-3d;
        position: relative;
        display: flex;
        flex-direction: column;
    }

    .parallax-card:hover {
        transform: translateY(-10px) rotateX(5deg) rotateY(-5deg) scale(1.02);
        box-shadow: 0 20px 40px rgba(46, 125, 50, 0.2);
        z-index: 10;
    }

    .parallax-card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        transition: transform 0.4s;
    }

    .parallax-card:hover img {
        transform: scale(1.05);
    }

    .card-content {
        padding: 20px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }

    .card-content h3 {
        font-size: 1.2rem;
        color: var(--text-dark);
        margin-bottom: 10px;
    }

    .card-content p {
        font-size: 0.9rem;
        color: #666;
        margin-bottom: 15px;
        flex-grow: 1;
    }

    .card-tag {
        display: inline-block;
        background: #e8f5e9;
        color: var(--primary-green);
        padding: 4px 10px;
        border-radius: 12px;
        font-size: 0.8rem;
        font-weight: bold;
        align-self: flex-start;
    }

    /* Film Strip (Original) */
    .film-strip-section {
        background: #fff;
    }

    .film-strip {
        display: flex;
        overflow-x: auto;
        gap: 20px;
        padding: 20px 0;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }

    .film-strip::-webkit-scrollbar {
        height: 8px;
    }
    .film-strip::-webkit-scrollbar-thumb {
        background: var(--light-green);
        border-radius: 4px;
    }

    .film-item {
        flex: 0 0 280px;
        scroll-snap-align: start;
        background: #f9f9f9;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        display: flex;
        flex-direction: column;
    }

    .film-item img {
        width: 100%;
        height: 380px;
        object-fit: cover;
    }

    .film-info {
        padding: 15px;
        background: #fff;
    }

    .film-info h3 {
        font-size: 1.1rem;
        color: var(--primary-green);
        margin-bottom: 8px;
    }

    .film-info .date {
        font-size: 0.8rem;
        color: #999;
        margin-bottom: 10px;
    }

    .film-info p {
        font-size: 0.9rem;
        color: #555;
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* Energy Timeline (Calendar) */
    .timeline-section {
        background: #1a1a1a;
        color: #fff;
    }

    .timeline-section .section-title {
        color: var(--light-green);
    }
    .timeline-section .section-desc {
        color: #aaa;
    }

    .timeline {
        position: relative;
        max-width: 800px;
        margin: 0 auto;
        padding: 40px 0;
    }

    .timeline::before {
        content: '';
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        width: 4px;
        height: 100%;
        background: rgba(129, 199, 132, 0.3);
        border-radius: 2px;
    }

    .timeline-item {
        position: relative;
        margin-bottom: 40px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }

    .timeline-item:nth-child(odd) {
        flex-direction: row-reverse;
    }

    .timeline-content {
        width: 45%;
        background: #2a2a2a;
        padding: 20px;
        border-radius: 12px;
        border: 1px solid rgba(129, 199, 132, 0.2);
        position: relative;
    }

    .timeline-content h3 {
        color: var(--light-green);
        font-size: 1.1rem;
        margin-bottom: 8px;
    }

    .timeline-content p {
        font-size: 0.9rem;
        color: #ccc;
    }

    .timeline-time {
        width: 45%;
        text-align: right;
        font-size: 1.2rem;
        font-weight: bold;
        color: var(--accent-yellow);
    }

    .timeline-item:nth-child(odd) .timeline-time {
        text-align: left;
    }

    .timeline-dot {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        width: 16px;
        height: 16px;
        background: var(--light-green);
        border-radius: 50%;
        box-shadow: 0 0 0 4px rgba(129, 199, 132, 0.2);
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0% { box-shadow: 0 0 0 0 rgba(129, 199, 132, 0.6); }
        70% { box-shadow: 0 0 0 15px rgba(129, 199, 132, 0); }
        100% { box-shadow: 0 0 0 0 rgba(129, 199, 132, 0); }
    }

    /* Bubble Matrix (Wishes & Trends) */
    .bubble-section {
        background: linear-gradient(180deg, #f3e5f5 0%, #e1bee7 100%);
    }

    .bubble-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }

    .bubble-column h3 {
        text-align: center;
        color: var(--purple-theme);
        margin-bottom: 20px;
        font-size: 1.4rem;
    }

    .bubble-list {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .bubble-item {
        background: rgba(255, 255, 255, 0.7);
        backdrop-filter: blur(10px);
        border-radius: 30px;
        padding: 15px 25px;
        display: flex;
        align-items: center;
        gap: 15px;
        border: 2px solid transparent;
        transition: transform 0.2s;
    }

    .bubble-item:hover {
        transform: translateX(5px);
    }

    .bubble-item.top-1 {
        border-color: #ffd700;
        box-shadow: 0 0 15px rgba(255, 215, 0, 0.4);
        background: #fff;
    }
    .bubble-item.top-2 {
        border-color: #c0c0c0;
        box-shadow: 0 0 15px rgba(192, 192, 192, 0.4);
        background: #fff;
    }
    .bubble-item.top-3 {
        border-color: #cd7f32;
        box-shadow: 0 0 15px rgba(205, 127, 50, 0.4);
        background: #fff;
    }

    .rank-num {
        font-weight: bold;
        font-size: 1.2rem;
        color: var(--purple-theme);
        width: 30px;
        text-align: center;
    }

    .bubble-item p {
        font-size: 0.95rem;
        color: #444;
        margin: 0;
    }

    /* Danmaku Flow (Echoes) */
    .danmaku-section {
        background: #f9fbe7;
    }

    .danmaku-container {
        position: relative;
        height: 400px;
        background: #fff;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: inset 0 0 20px rgba(0,0,0,0.05);
    }

    .danmaku-track {
        position: absolute;
        white-space: nowrap;
        display: flex;
        align-items: center;
        gap: 10px;
        background: #fff;
        padding: 8px 16px;
        border-radius: 20px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        animation: scrollLeft linear infinite;
    }

    .danmaku-track img {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        object-fit: cover;
    }

    .danmaku-track span {
        font-size: 0.9rem;
        color: #333;
    }

    .danmaku-track:nth-child(1) { top: 10%; animation-duration: 15s; animation-delay: 0s; }
    .danmaku-track:nth-child(2) { top: 25%; animation-duration: 18s; animation-delay: -5s; background: #e8f5e9;}
    .danmaku-track:nth-child(3) { top: 40%; animation-duration: 14s; animation-delay: -2s; }
    .danmaku-track:nth-child(4) { top: 55%; animation-duration: 20s; animation-delay: -8s; background: #fff9c4;}
    .danmaku-track:nth-child(5) { top: 70%; animation-duration: 16s; animation-delay: -12s; }
    .danmaku-track:nth-child(6) { top: 85%; animation-duration: 17s; animation-delay: -4s; background: #f3e5f5;}
    .danmaku-track:nth-child(7) { top: 18%; animation-duration: 19s; animation-delay: -15s; }
    .danmaku-track:nth-child(8) { top: 48%; animation-duration: 13s; animation-delay: -7s; background: #e0f7fa;}
    .danmaku-track:nth-child(9) { top: 78%; animation-duration: 21s; animation-delay: -10s; }
    .danmaku-track:nth-child(10) { top: 32%; animation-duration: 15s; animation-delay: -3s; background: #ffebee;}

    @keyframes scrollLeft {
        from { transform: translateX(100%); }
        to { transform: translateX(-100%); }
    }

    /* FAQ Accordion */
    .faq-section {
        background: #fff;
    }

    .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .faq-item {
        border: 1px solid #e0e0e0;
        border-radius: 12px;
        overflow: hidden;
    }

    .faq-question {
        width: 100%;
        text-align: left;
        padding: 20px;
        background: #f9f9f9;
        border: none;
        font-size: 1.05rem;
        font-weight: bold;
        color: var(--text-dark);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        transition: background 0.2s;
    }

    .faq-question:hover {
        background: #f0f0f0;
    }

    .faq-question::after {
        content: '+';
        font-size: 1.5rem;
        color: var(--primary-green);
    }

    .faq-item.active .faq-question::after {
        content: '-';
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
        background: #fff;
    }

    .faq-answer p {
        padding: 0 20px 20px;
        color: #666;
        font-size: 0.95rem;
        margin: 0;
    }

    .faq-item.active .faq-answer {
        max-height: 200px;
    }

    /* Footer & Install */
    .footer-install {
        background: linear-gradient(135deg, #2e7d32, #1b5e20);
        color: #fff;
        padding: 60px 0 30px;
    }

    .install-guide {
        text-align: center;
        margin-bottom: 40px;
    }

    .install-guide h3 {
        font-size: 1.5rem;
        margin-bottom: 15px;
        color: var(--accent-yellow);
    }

    .install-guide p {
        font-size: 1rem;
        color: #ccc;
        margin-bottom: 20px;
    }

    .footer-download-group {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
        margin-bottom: 50px;
    }

    .footer-bottom {
        text-align: center;
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: 30px;
        color: #a5d6a7;
        font-size: 0.9rem;
    }

    .footer-bottom p {
        margin-bottom: 8px;
    }

    .footer-bottom time {
        color: #81c784;
    }

    /* Modal for iOS Download */
    .modal-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.6);
        z-index: 1000;
        justify-content: center;
        align-items: center;
        padding: 20px;
    }

    .modal-overlay.show {
        display: flex;
    }

    .modal-content {
        background: #fff;
        border-radius: 16px;
        padding: 30px;
        max-width: 400px;
        width: 100%;
        text-align: center;
        box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    }

    .modal-content h3 {
        color: var(--text-dark);
        margin-bottom: 15px;
        font-size: 1.2rem;
    }

    .modal-content p {
        color: #666;
        font-size: 0.95rem;
        margin-bottom: 20px;
        word-break: break-all;
    }

    .copy-btn {
        background: var(--primary-green);
        color: #fff;
        border: none;
        padding: 12px 30px;
        border-radius: 25px;
        font-size: 1rem;
        font-weight: bold;
        cursor: pointer;
        width: 100%;
    }

    .copy-btn:hover {
        background: #1b5e20;
    }

    .close-modal {
        margin-top: 15px;
        background: transparent;
        border: none;
        color: #999;
        cursor: pointer;
        font-size: 0.9rem;
    }

    /* Responsive */
    @media (min-width: 768px) {
        .hero-content {
            flex-direction: row;
            justify-content: space-between;
            text-align: left;
        }
        .hero-text {
            flex: 1;
            text-align: left;
        }
        .hero-badges, .download-group {
            justify-content: flex-start;
        }
        .hero-image {
            flex: 1;
            max-width: 45%;
        }
        .nav-links {
            display: flex;
        }
        .timeline::before {
            left: 50%;
        }
        .timeline-item {
            flex-direction: row;
        }
        .timeline-item:nth-child(odd) {
            flex-direction: row-reverse;
        }
        .timeline-content {
            width: 45%;
        }
        .timeline-time {
            width: 45%;
            text-align: right;
        }
        .timeline-item:nth-child(odd) .timeline-time {
            text-align: left;
        }
    }

    @media (min-width: 1024px) {
        .hero-text h1 {
            font-size: 3rem;
        }
        .section-title {
            font-size: 2.5rem;
        }
        .parallax-wall {
            grid-template-columns: repeat(3, 1fr);
        }
    }