* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0c1a2d 0%, #1a1a2e 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4, h5 { color: #4fc3f7; font-weight: 700; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); text-align: center; margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-left: 5px solid #ff9800; padding-left: 15px; margin-top: 2.5rem; }
        h3 { font-size: clamp(1.5rem, 3vw, 2rem); color: #81d4fa; margin-top: 2rem; }
        h4 { font-size: 1.4rem; color: #b3e5fc; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        a { color: #4fc3f7; text-decoration: none; transition: color 0.3s ease, transform 0.2s; }
        a:hover { color: #ff9800; transform: translateY(-2px); }
        .highlight { background-color: rgba(255, 152, 0, 0.15); padding: 0.2rem 0.5rem; border-radius: 4px; font-weight: 600; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .site-header {
            background: rgba(10, 25, 47, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #1e88e5;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #4fc3f7, #ff9800);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 5px rgba(0,0,0,0.3);
        }
        .logo a:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: 30px;
            border: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            border-color: #4fc3f7;
            background: rgba(79, 195, 247, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #4fc3f7;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: rgba(10, 25, 47, 0.98);
                padding: 20px;
                transition: left 0.4s ease;
                flex-direction: column;
                display: flex;
            }
            .main-nav.active { left: 0; }
            .main-nav ul { flex-direction: column; gap: 15px; }
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.95rem;
            background: rgba(30, 40, 60, 0.7);
            border-radius: 10px;
            margin: 20px 0;
            padding-left: 20px;
        }
        .breadcrumb a { color: #81d4fa; }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-content { background: rgba(20, 30, 48, 0.7); border-radius: 15px; padding: 30px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
        .featured-image {
            width: 100%;
            border-radius: 10px;
            border: 3px solid #1e88e5;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0, 150, 255, 0.3);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            border-top: 1px solid #2a3c5a;
            border-bottom: 1px solid #2a3c5a;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 10px;
        }
        .update-time { font-style: italic; color: #ffcc80; }
        .sidebar {
            background: rgba(20, 30, 48, 0.7);
            border-radius: 15px;
            padding: 25px;
            height: fit-content;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
        }
        .widget { margin-bottom: 35px; }
        .widget h3 {
            font-size: 1.5rem;
            border-bottom: 2px dashed #4fc3f7;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .form-group { display: flex; flex-direction: column; }
        input, textarea, select {
            padding: 12px 15px;
            border-radius: 8px;
            border: 1px solid #3a506b;
            background: rgba(30, 40, 60, 0.8);
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4fc3f7;
            box-shadow: 0 0 8px rgba(79, 195, 247, 0.5);
        }
        button, .btn {
            padding: 12px 25px;
            background: linear-gradient(90deg, #1e88e5, #4fc3f7);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #1565c0, #0288d1);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(21, 101, 192, 0.4);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .star-rating input { display: none; }
        .star-rating label {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label { color: #ff9800; }
        .comment-list { margin-top: 30px; }
        .comment {
            background: rgba(40, 50, 70, 0.6);
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 20px;
            border-left: 4px solid #4fc3f7;
        }
        .comment-author { font-weight: bold; color: #ffcc80; }
        .comment-date { font-size: 0.9rem; color: #aaa; margin-left: 10px; }
        .site-footer {
            background: rgba(10, 20, 35, 0.95);
            border-top: 2px solid #1e88e5;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 { font-size: 1.5rem; margin-bottom: 20px; }
        friend-link {
            display: block;
            background: rgba(30, 40, 60, 0.7);
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 10px;
            border: 1px solid transparent;
            transition: all 0.3s;
        }
        friend-link:hover {
            border-color: #4fc3f7;
            background: rgba(79, 195, 247, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2a3c5a;
            font-size: 0.9rem;
            color: #aaa;
        }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .p-3 { padding: 1rem; }
        .rounded { border-radius: 10px; }
        .shadow { box-shadow: 0 5px 15px rgba(0,0,0,0.2); }