body {
            margin: 0;
            padding: 0;
            font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif;
            background: linear-gradient(180deg, #065f46 0%, #047857 100%);
            color: #f8f9fa;
            position: relative;
            overflow-x: hidden;
            min-height: 100vh;
            font-size: 14px;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
        }

        .video-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(
                rgba(6, 95, 70, 0.85),
                rgba(4, 120, 87, 0.75)
            );
            z-index: -1;
        }

        .container {
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin: 0 auto;
            padding: 15px;
        }

        @media (min-width: 768px) {
            .container {
                max-width: 600px;
                padding: 20px;
            }
        }

        .header {
            text-align: center;
            padding: 15px 0;
        }

        .logo-container {
            margin-bottom: 10px;
        }

        .academy-icon {
            width: 80px;
            height: 80px;
            margin-bottom: 10px;
            display: inline-block;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.3), rgba(6, 95, 70, 0.2));
            padding: 10px;
            border-radius: 50%;
            animation: pulse 3s ease-in-out infinite;
            border: 2px solid rgba(110, 231, 183, 0.3);
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        .header h1 {
            margin: 10px 0 5px 0;
            font-size: 1.8rem;
            font-weight: bold;
        }

        .subtitle {
            margin: 0;
            font-size: 14px;
            color: #d1fae5;
            font-weight: 300;
        }

        .banner {
            background: linear-gradient(135deg, rgba(6, 95, 70, 0.8) 0%, rgba(4, 120, 87, 0.9) 100%);
            color: white;
            padding: 16px;
            border-radius: 12px;
            margin-bottom: 18px;
            box-shadow: 0 6px 20px rgba(6, 95, 70, 0.4);
            border: 1px solid rgba(110, 231, 183, 0.2);
            backdrop-filter: blur(15px);
        }

        .banner-header {
            margin-bottom: 12px;
            text-align: center;
        }

        .banner-header h3 {
            margin: 0;
            font-size: 16px;
            color: #6ee7b7;
            font-weight: bold;
        }

        .module-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .module-item {
            display: flex;
            align-items: center;
            background: rgba(110, 231, 183, 0.1);
            border-radius: 10px;
            padding: 12px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(110, 231, 183, 0.2);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .module-item:hover {
            background: rgba(110, 231, 183, 0.15);
            transform: translateY(-1px);
            border-color: rgba(110, 231, 183, 0.3);
            box-shadow: 0 4px 12px rgba(110, 231, 183, 0.1);
        }

        .module-rank {
            width: 24px;
            height: 24px;
            background: rgba(110, 231, 183, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: bold;
            color: #6ee7b7;
            margin-right: 12px;
            flex-shrink: 0;
        }

        .module-info {
            flex: 1;
            min-width: 0;
        }

        .module-name {
            font-size: 14px;
            font-weight: bold;
            color: white;
            margin-bottom: 4px;
        }

        .module-details {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }

        .module-level {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.7);
            flex-shrink: 0;
        }

        .students {
            font-size: 10px;
            color: #6ee7b7;
            background: rgba(110, 231, 183, 0.1);
            padding: 2px 6px;
            border-radius: 8px;
            white-space: nowrap;
        }

        .features {
            display: flex;
            justify-content: center;
            margin: 15px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .feature-item {
            display: flex;
            align-items: center;
            font-size: 12px;
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(110, 231, 183, 0.1));
            padding: 6px 10px;
            border-radius: 15px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(110, 231, 183, 0.2);
        }

        .feature-item span {
            margin-right: 5px;
        }

        .search-container {
            display: flex;
            margin: 18px 0;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .search-box {
            flex: 1;
            padding: 14px 12px;
            border: none;
            font-size: 15px;
            outline: none;
            background: white;
            font-family: inherit;
        }

        .search-box::placeholder {
            color: #9ca3af;
            font-size: 14px;
        }

        .search-button {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: white;
            border: none;
            padding: 14px 20px;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
            min-width: 80px;
            border: 1px solid rgba(110, 231, 183, 0.3);
        }

        .search-button:hover {
            background: linear-gradient(135deg, #059669 0%, #047857 100%);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
        }

        .search-button:disabled {
            background-color: #666;
            cursor: not-allowed;
            transform: none;
        }

        .educational-notice {
            background: rgba(16, 185, 129, 0.1);
            border-radius: 12px;
            padding: 16px;
            margin: 20px 0;
            border: 1px solid rgba(110, 231, 183, 0.3);
        }

        .educational-notice h4 {
            margin: 0 0 10px 0;
            color: #6ee7b7;
            font-size: 16px;
        }

        .educational-notice p {
            margin: 0;
            font-size: 13px;
            line-height: 1.5;
            color: #d1fae5;
        }

        .disclaimer {
            margin-top: 25px;
            padding: 15px;
            font-size: 12px;
            line-height: 1.5;
            color: #fef3c7;
            background: rgba(245, 158, 11, 0.2);
            border-radius: 8px;
            border-left: 3px solid #f59e0b;
        }

        /* Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 9999;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-content {
            background: rgb(6, 78, 59);
            border-radius: 12px;
            padding: 32px 18px;
            max-width: 340px;
            width: 90%;
        }

        .modal-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            font-size: 20px;
            font-weight: bold;
        }

        .progress-item {
            margin-bottom: 16px;
        }

        .progress-title {
            font-size: 15px;
            margin-bottom: 8px;
        }

        .progress-bar {
            background: #eee;
            border-radius: 8px;
            height: 16px;
            overflow: hidden;
        }

        .progress-fill {
            background: #10b981;
            height: 100%;
            border-radius: 8px;
            transition: width 0.3s ease;
            width: 0%;
        }

        .result-button {
            background: #15a223;
            color: #fff;
            padding: 25px 0;
            font-size: large;
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            margin: 20px auto 0;
            animation: breath 1.6s infinite;
            border: none;
        }

        @keyframes breath {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.9;
                transform: scale(1.03);
            }
        }

        .hidden {
            display: none;
        }