* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #222;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a { color: #2a5db0; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #ff4757; text-decoration: underline; }
        .my-logo {
            font-size: 2.4rem;
            font-weight: 900;
            color: #ff4757;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            letter-spacing: -0.5px;
        }
        .my-logo a { color: inherit; }
        header {
            background: #ffffff;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
        }
        nav { display: flex; align-items: center; }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 28px;
        }
        .nav-links a {
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 30px;
            color: #333;
        }
        .nav-links a:hover {
            background: #ff4757;
            color: white;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(255,71,87,0.3);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #555;
        }
        .breadcrumb {
            padding: 14px 0;
            background: #f8f9fa;
            font-size: 0.95rem;
            border-bottom: 1px solid #eaeaea;
        }
        .breadcrumb a:after {
            content: '›';
            margin: 0 10px;
            color: #888;
        }
        .breadcrumb a:last-child:after { display: none; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px auto;
        }
        article {
            background: white;
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        aside {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 3.2rem;
            color: #1a1a1a;
            margin-bottom: 25px;
            text-align: center;
            line-height: 1.2;
            border-bottom: 4px solid #ff4757;
            padding-bottom: 20px;
        }
        h2 {
            font-size: 2.3rem;
            color: #2d2d2d;
            margin-top: 45px;
            margin-bottom: 20px;
            padding-left: 15px;
            border-left: 6px solid #2a5db0;
        }
        h3 {
            font-size: 1.8rem;
            color: #3a3a3a;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
            margin-top: 22px;
            margin-bottom: 12px;
        }
        p {
            margin-bottom: 22px;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(90deg, #fff9e6 0%, #fff0cc 100%);
            border-left: 5px solid #ffcc00;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 12px 12px 0;
            font-weight: 500;
        }
        img.featured {
            width: 100%;
            height: auto;
            border-radius: 15px;
            margin: 30px 0;
            box-shadow: 0 12px 25px rgba(0,0,0,0.15);
            transition: transform 0.4s ease;
        }
        img.featured:hover { transform: scale(1.01); }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin: 35px 0;
        }
        .link-card {
            background: #f8f9ff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid #e0e5ff;
            transition: all 0.3s ease;
        }
        .link-card:hover {
            background: #eef1ff;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(42,93,176,0.1);
        }
        .functional-sections {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin: 40px 0;
        }
        .functional-box {
            background: #f9f9f9;
            padding: 25px;
            border-radius: 15px;
            border: 1px solid #eee;
        }
        .functional-box h3 {
            color: #2a5db0;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        input, textarea, select {
            padding: 14px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
        }
        button {
            padding: 14px;
            background: linear-gradient(90deg, #ff4757 0%, #ff6b81 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover {
            background: linear-gradient(90deg, #ff3742 0%, #ff5770 100%);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255,71,87,0.4);
        }
        friend-link {
            display: block;
            margin: 12px 0;
            padding: 15px;
            background: #f0f7ff;
            border-radius: 10px;
            border: 1px dashed #2a5db0;
        }
        friend-link a { font-weight: 700; font-size: 1.1rem; }
        footer {
            background: #1a1a1a;
            color: #ddd;
            padding: 50px 0 25px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: #ff4757;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .footer-section ul { list-style: none; }
        .footer-section li { margin-bottom: 12px; }
        .footer-section a { color: #aaa; }
        .footer-section a:hover { color: #ff4757; }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #888;
        }
        .update-time {
            background: #e8f4ff;
            padding: 12px 20px;
            border-radius: 10px;
            display: inline-block;
            margin-bottom: 30px;
            font-weight: 600;
        }
        @media (max-width: 1024px) {
            main { grid-template-columns: 1fr; }
            aside { position: static; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
                gap: 15px;
            }
            .nav-links.active { display: flex; }
            .hamburger { display: block; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .functional-sections { grid-template-columns: 1fr; }
            .footer-content { grid-template-columns: 1fr; }
            .header-top { flex-wrap: wrap; }
        }