*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
            background: #0b0d10;
            color: #e8eaed;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #facc15;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #ffb703;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 12px;
        }
        .site-header {
            background: #15191f;
            padding: 12px 0;
            border-bottom: 2px solid #facc15;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(6px);
            background-color: rgba(21, 25, 31, 0.94);
        }
        .header-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #facc15;
            text-transform: uppercase;
            background: linear-gradient(135deg, #facc15, #ff8c00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 12px rgba(250, 204, 21, 0.3);
            display: inline-block;
        }
        .my-logo small {
            font-size: 0.75rem;
            -webkit-text-fill-color: #aaa;
            color: #aaa;
            display: block;
            font-weight: 400;
            letter-spacing: 2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #facc15;
            color: #facc15;
            font-size: 1.5rem;
            padding: 4px 12px;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #facc1520;
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            list-style: none;
            padding: 0;
            margin: 0;
            align-items: center;
        }
        .nav-menu li a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: border-color 0.25s;
        }
        .nav-menu li a:hover {
            border-bottom-color: #facc15;
            text-decoration: none;
        }
        .breadcrumb {
            background: #1e232b;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.85rem;
            margin: 16px 0 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            color: #9aa0a8;
        }
        .breadcrumb a {
            color: #facc15;
        }
        .breadcrumb span+span::before {
            content: "›";
            margin-right: 8px;
            color: #666;
        }
        .hero-figure {
            margin: 24px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.7);
            background: #1a1f26;
            padding: 8px;
        }
        .hero-figure img {
            border-radius: 12px;
            width: 100%;
            aspect-ratio: 1200/630;
            object-fit: cover;
            background: #2a2f38;
        }
        .hero-figure figcaption {
            padding: 12px 8px 4px;
            font-size: 0.9rem;
            color: #b0b6c0;
            text-align: center;
            font-style: italic;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #facc15;
            margin: 20px 0 8px;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fdd835;
            margin: 40px 0 16px;
            border-left: 5px solid #facc15;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #ffd966;
            margin: 28px 0 12px;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #ffecb3;
            margin: 20px 0 8px;
        }
        p {
            margin-bottom: 1.2rem;
            color: #d5d8de;
        }
        .highlight {
            background: #2a2f3a;
            padding: 0 6px;
            border-radius: 4px;
            font-weight: 600;
            color: #facc15;
        }
        strong {
            color: #ffe082;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 6px;
        }
        .class-card {
            background: #1a1f28;
            border-radius: 16px;
            padding: 24px 20px;
            margin: 24px 0;
            border-left: 4px solid #facc15;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .class-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(250, 204, 21, 0.12);
        }
        .class-card h3 {
            margin-top: 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 12px;
            margin: 16px 0;
        }
        .stat-item {
            background: #242a34;
            border-radius: 10px;
            padding: 12px 16px;
            text-align: center;
        }
        .stat-item .label {
            font-size: 0.8rem;
            color: #9aa0a8;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .stat-item .value {
            font-size: 1.3rem;
            font-weight: 700;
            color: #facc15;
        }
        .form-block {
            background: #1a1f28;
            border-radius: 16px;
            padding: 24px 20px;
            margin: 28px 0;
            border: 1px solid #2f3540;
        }
        .form-block h3 {
            margin-top: 0;
            color: #facc15;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 4px;
            color: #ccc;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid #3a404a;
            background: #0f1217;
            color: #e8eaed;
            font-size: 1rem;
            transition: border 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #facc15;
            box-shadow: 0 0 0 3px #facc1525;
        }
        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            background: #facc15;
            color: #0b0d10;
            font-weight: 700;
            padding: 10px 28px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
        }
        .btn:hover {
            background: #ffb703;
            transform: scale(1.02);
        }
        .btn:active {
            transform: scale(0.97);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #444;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .star-rating .star {
            transition: color 0.2s, transform 0.15s;
            user-select: none;
        }
        .star-rating .star.active,
        .star-rating .star:hover {
            color: #facc15;
            transform: scale(1.1);
        }
        .site-footer {
            background: #15191f;
            padding: 28px 16px 20px;
            margin-top: 48px;
            border-top: 2px solid #2a2f3a;
            border-radius: 20px 20px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }
        .footer-grid h4 {
            color: #facc15;
            margin-bottom: 10px;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid ul li {
            margin-bottom: 6px;
        }
        .footer-grid ul li a {
            font-size: 0.9rem;
            color: #b0b6c0;
        }
        .footer-grid ul li a:hover {
            color: #facc15;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 20px;
            border-top: 1px solid #2a2f3a;
            font-size: 0.85rem;
            color: #7a7f88;
        }
        .copyright strong {
            color: #ccc;
        }
        friend-link {
            display: block;
            background: #1e232b;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 16px 0 8px;
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            margin-bottom: 4px;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .header-grid {
                flex-direction: row;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 12px 0 4px;
                gap: 6px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 8px 4px;
                border-bottom: 1px solid #2a2f3a;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-figure img {
                aspect-ratio: 16/9;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .form-block {
                padding: 16px;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 8px;
            }
            .container {
                padding: 0 4px;
            }
            .class-card {
                padding: 16px 12px;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        :target {
            scroll-margin-top: 80px;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .text-muted {
            color: #9aa0a8;
            font-size: 0.9rem;
        }
        .tag {
            display: inline-block;
            background: #2a2f3a;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #facc15;
            margin-right: 6px;
        }