* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.75;
            color: #333;
            background-color: #fefefe;
            max-width: 120rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        a { color: #6a11cb; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #2575fc; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); margin: 2rem 0 1rem; color: #1a1a2e; line-height: 1.2; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin: 3rem 0 1.5rem; padding-top: 1rem; border-top: 3px solid #f0f0f0; color: #2d3436; }
        h3 { font-size: clamp(1.5rem, 3vw, 1.9rem); margin: 2rem 0 1rem; color: #444; }
        h4 { font-size: 1.3rem; margin: 1.5rem 0 0.75rem; color: #555; }
        p, li { margin-bottom: 1.5em; font-size: 1.125rem; color: #444; }
        .lead { font-size: 1.4rem; color: #555; font-weight: 300; margin-bottom: 2.5rem; }
        strong { color: #1a1a2e; font-weight: 700; }
        em { font-style: italic; }
        blockquote {
            border-left: 5px solid #6a11cb;
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            background: linear-gradient(135deg, #f9f7ff 0%, #eef2ff 100%);
            border-radius: 0 8px 8px 0;
            font-style: italic;
            font-size: 1.25rem;
        }
        .emoji { font-size: 1.2em; margin-right: 0.3em; }
        .container {
            display: grid;
            grid-template-columns: 1fr minmax(auto, 85rem) 1fr;
            grid-template-areas:
                "header header header"
                "nav nav nav"
                ". breadcrumb ."
                ". main ."
                "footer footer footer";
            gap: 2rem;
        }
        header { grid-area: header; }
        nav { grid-area: nav; }
        .breadcrumb { grid-area: breadcrumb; }
        main { grid-area: main; }
        footer { grid-area: footer; }
        .site-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            border-bottom: 1px solid #eaeaea;
        }
        .my-logo {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(90deg, #6a11cb 0%, #2575fc 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .my-logo:hover { text-decoration: none; }
        .main-nav {
            display: flex;
            justify-content: center;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            border-radius: 12px;
            padding: 0.8rem 1.5rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }
        .nav-list a {
            color: #fff;
            font-weight: 500;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-list a:hover { text-decoration: none; color: #ffcc00; }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #ffcc00;
            transition: width 0.3s ease;
        }
        .nav-list a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav { display: none; }
        .breadcrumb {
            font-size: 0.95rem;
            color: #666;
            padding: 1rem 0;
        }
        .breadcrumb a { color: #666; }
        .breadcrumb a:hover { color: #6a11cb; }
        .breadcrumb .separator { margin: 0 0.5rem; color: #aaa; }
        .functional-module {
            background: #f8f9ff;
            border: 1px solid #e1e8ff;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .module-title { font-size: 1.5rem; margin-bottom: 1.5rem; color: #1a1a2e; }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .form-group { display: flex; flex-direction: column; }
        label { margin-bottom: 0.5rem; font-weight: 600; color: #444; }
        input, textarea, select {
            padding: 0.9rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #6a11cb;
            box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.1);
        }
        button, .btn {
            background: linear-gradient(90deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.3s ease;
            align-self: start;
        }
        button:hover, .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(106, 17, 203, 0.2);
            text-decoration: none;
        }
        .stars { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
        .star { font-size: 1.8rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffcc00; }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 1.5rem;
            border-bottom: 2px dashed #e0e0e0;
            margin-bottom: 3rem;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .update-time {
            font-size: 0.95rem;
            color: #6c757d;
            background: #f1f3f9;
            padding: 0.5rem 1rem;
            border-radius: 20px;
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 16px;
            margin: 2.5rem 0;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .link-list {
            background: #f0f7ff;
            border-radius: 12px;
            padding: 2rem;
            margin: 2.5rem 0;
        }
        .link-list h3 { margin-top: 0; }
        .link-list ul { columns: 2; list-style-position: inside; }
        .link-list li { margin-bottom: 0.75rem; break-inside: avoid; }
        footer {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #fff;
            padding: 3rem 2rem;
            border-radius: 16px 16px 0 0;
            margin-top: 4rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 3rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            border-bottom: 2px solid #2d3748;
            padding-bottom: 0.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #cbd5e0;
        }
        friend-link:hover { color: #ffcc00; text-decoration: none; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .container { grid-template-columns: 1fr; grid-template-areas: "header" "nav" "breadcrumb" "main" "footer"; }
            .main-nav { justify-content: flex-end; padding: 0.8rem; }
            .nav-list { display: none; }
            .hamburger { display: block; }
            .mobile-nav {
                display: none;
                flex-direction: column;
                background: #1a1a2e;
                border-radius: 0 0 12px 12px;
                padding: 1rem;
                position: absolute;
                width: 100%;
                z-index: 1000;
                top: 100%;
                left: 0;
            }
            .mobile-nav.active { display: flex; }
            .mobile-nav a {
                color: #fff;
                padding: 1rem;
                border-bottom: 1px solid #2d3748;
            }
            .mobile-nav a:last-child { border-bottom: none; }
            .link-list ul { columns: 1; }
        }
        @media (max-width: 768px) {
            .article-meta { flex-direction: column; align-items: flex-start; }
            .form-grid { grid-template-columns: 1fr; }
            .footer-content { flex-direction: column; }
        }