:root {
            --primary-dark: #1a2a3a;
            --primary-accent: #f39c12;
            --secondary-accent: #3498db;
            --text-light: #ecf0f1;
            --text-dim: #bdc3c7;
            --bg-card: #2c3e50;
            --bg-body: #1e2b38;
            --success: #2ecc71;
            --warning: #e74c3c;
            --shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
            --border-radius: 12px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--primary-accent);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #0d1b2a 100%);
            padding: 1.5rem 0;
            border-bottom: 3px solid var(--primary-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-accent);
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            letter-spacing: 1px;
        }
        .my-logo span {
            color: var(--text-light);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--text-dim);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary-accent);
            background-color: rgba(255, 255, 255, 0.05);
        }
        .main-nav a:hover::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            background: var(--primary-accent);
            border-radius: 50%;
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-dim);
        }
        .breadcrumb a:last-of-type {
            color: var(--primary-accent);
        }
        .hero-section {
            text-align: center;
            padding: 3rem 1rem;
            background: linear-gradient(rgba(26, 42, 58, 0.9), rgba(26, 42, 58, 0.9)), url('https://images.unsplash.com/photo-1534423861386-85a16f5d13fd?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
        }
        .hero-section h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            color: var(--primary-accent);
            text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.7);
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            color: var(--text-dim);
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            background: var(--bg-card);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .search-box h3 {
            margin-bottom: 1rem;
            color: var(--primary-accent);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid transparent;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--text-light);
            font-size: 1rem;
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--primary-accent);
        }
        .search-form button {
            background-color: var(--primary-accent);
            color: var(--primary-dark);
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s;
        }
        .search-form button:hover {
            background-color: #e67e22;
        }
        .content-section {
            background-color: var(--bg-card);
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        h2 {
            color: var(--primary-accent);
            font-size: 2.2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid rgba(243, 156, 18, 0.3);
        }
        h3 {
            color: var(--secondary-accent);
            font-size: 1.8rem;
            margin: 1.8rem 0 1rem;
        }
        h4 {
            color: var(--text-dim);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(243, 156, 18, 0.15);
            border-left: 4px solid var(--primary-accent);
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.5rem;
        }
        .tier-list-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tier-card {
            background: linear-gradient(145deg, #34495e, #2c3e50);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-top: 5px solid;
        }
        .tier-s { border-top-color: #ff6b6b; }
        .tier-a { border-top-color: #f39c12; }
        .tier-b { border-top-color: #3498db; }
        .tier-c { border-top-color: #9b59b6; }
        .tier-d { border-top-color: #95a5a6; }
        .tier-card h4 {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .hero-list {
            list-style: none;
            margin-top: 1rem;
        }
        .hero-list li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
        }
        .content-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            border: 3px solid var(--primary-accent);
        }
        .user-interaction {
            background-color: var(--bg-card);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-top: 3rem;
        }
        .rating-section, .comment-section {
            margin-bottom: 2.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: var(--text-dim);
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
        }
        .star:hover,
        .star.active {
            color: var(--primary-accent);
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border-radius: var(--border-radius);
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid transparent;
            color: var(--text-light);
            font-size: 1rem;
            margin: 1rem 0;
            min-height: 150px;
        }
        .comment-form textarea:focus {
            outline: none;
            border-color: var(--secondary-accent);
        }
        .submit-btn {
            background-color: var(--secondary-accent);
            color: white;
            border: none;
            padding: 0.9rem 2.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            transition: background-color 0.3s;
        }
        .submit-btn:hover {
            background-color: #2980b9;
        }
        .site-footer {
            background-color: var(--primary-dark);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            border-top: 3px solid var(--primary-accent);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-accent);
            margin-bottom: 1rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1.5rem 0;
        }
        friend-link {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            padding: 0.7rem 1.2rem;
            border-radius: 50px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: var(--primary-accent);
            color: var(--primary-dark);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-dim);
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--primary-accent);
            font-weight: bold;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1.5rem;
                gap: 0;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 1rem;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .content-section {
                padding: 1.5rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                width: 100%;
                border-radius: var(--border-radius);
                margin-bottom: 0.5rem;
            }
            .tier-list-container {
                grid-template-columns: 1fr;
            }
        }