* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #93c5fd;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 3rem 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 1rem 0;
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-desktop a:hover {
            border-bottom-color: #60a5fa;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e2e8f0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1e293b;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            border-top: 1px solid #334155;
            box-shadow: 0 10px 15px rgba(0,0,0,0.3);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 1rem;
            border-bottom: 1px solid #334155;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1.5rem 0;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        .breadcrumb span {
            margin: 0 0.5rem;
        }
        .hero {
            text-align: center;
            padding: 4rem 0;
            background: radial-gradient(circle at top, #1e293b 0%, #0f172a 70%);
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            background: linear-gradient(90deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
        }
        .subtitle {
            font-size: 1.4rem;
            color: #cbd5e1;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .search-section {
            background-color: #1e293b;
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem auto;
            max-width: 800px;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #475569;
            border-radius: 8px 0 0 8px;
            background-color: #0f172a;
            color: #e2e8f0;
            font-size: 1rem;
        }
        .search-button {
            background: linear-gradient(90deg, #3b82f6, #6366f1);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: opacity 0.3s;
        }
        .search-button:hover {
            opacity: 0.9;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            background-color: rgba(30, 41, 59, 0.6);
            padding: 2.5rem;
            border-radius: 16px;
            border: 1px solid #334155;
        }
        h2 {
            font-size: 2.2rem;
            margin: 3rem 0 1.5rem;
            color: #93c5fd;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #475569;
        }
        h2:first-of-type {
            margin-top: 0;
        }
        h3 {
            font-size: 1.7rem;
            margin: 2.5rem 0 1rem;
            color: #a5b4fc;
        }
        h4 {
            font-size: 1.3rem;
            margin: 2rem 0 1rem;
            color: #c7d2fe;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: #cbd5e1;
        }
        .highlight {
            background-color: rgba(59, 130, 246, 0.15);
            border-left: 4px solid #3b82f6;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip {
            background-color: rgba(34, 197, 94, 0.1);
            border-left: 4px solid #22c55e;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .warning {
            background-color: rgba(239, 68, 68, 0.1);
            border-left: 4px solid #ef4444;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .bold {
            font-weight: 700;
            color: #f1f5f9;
        }
        .emoji {
            margin-right: 0.5rem;
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            margin: 2.5rem auto;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            border: 1px solid #475569;
        }
        .sidebar {
            background-color: rgba(30, 41, 59, 0.6);
            padding: 2rem;
            border-radius: 16px;
            border: 1px solid #334155;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            margin-top: 0;
        }
        .toc-list {
            list-style: none;
        }
        .toc-list li {
            margin-bottom: 1rem;
            padding-left: 1rem;
            border-left: 3px solid #3b82f6;
        }
        .update-time {
            background-color: #1e293b;
            padding: 1rem;
            border-radius: 8px;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .interaction-section {
            background-color: #1e293b;
            padding: 3rem;
            border-radius: 16px;
            margin-top: 4rem;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        .interaction-box {
            background-color: #0f172a;
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid #334155;
        }
        .interaction-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating-stars i {
            color: #475569;
            cursor: pointer;
            font-size: 1.8rem;
            transition: color 0.3s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #fbbf24;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border-radius: 8px;
            border: 1px solid #475569;
            background-color: #1e293b;
            color: #e2e8f0;
            font-size: 1rem;
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(90deg, #8b5cf6, #d946ef);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.1rem;
            transition: opacity 0.3s;
            width: 100%;
        }
        .submit-btn:hover {
            opacity: 0.9;
        }
        .site-footer {
            background-color: #0f172a;
            border-top: 2px solid #334155;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-links {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 3rem;
        }
        .footer-col h4 {
            color: #93c5fd;
            margin-bottom: 1.5rem;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem 1rem;
            background-color: #1e293b;
            border-radius: 6px;
            margin-bottom: 0.8rem;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: #334155;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .text-center {
            text-align: center;
        }
        .mt-4 {
            margin-top: 4rem;
        }