*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #0c0e13;
            color: #e8edf5;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #7aa9ff;
            text-decoration: none;
            transition: color 0.2s ease, text-shadow 0.2s ease;
        }
        a:hover {
            color: #b3ccff;
            text-shadow: 0 0 8px rgba(122, 169, 255, 0.25);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: #f0f4ff;
            letter-spacing: 0.01em;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #f0e6ff 0%, #7aa9ff 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 1rem;
            border-left: 4px solid #7aa9ff;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            margin: 1.8rem 0 0.8rem;
            color: #d4e0ff;
        }
        h4 {
            font-size: 1.15rem;
            margin: 1.4rem 0 0.6rem;
            color: #bdc9f0;
        }
        p {
            margin-bottom: 1.2rem;
            color: #d5dce8;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background: #14181f;
            border-bottom: 1px solid #2a3140;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(8px);
            background: rgba(20, 24, 31, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.8rem 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #b3ccff, #7aa9ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            display: inline-block;
            transition: transform 0.2s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: #8899bb;
            color: #8899bb;
            display: block;
            letter-spacing: 0.3px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }
        nav a {
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #bcc8e6;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: #242b38;
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #bcc8e6;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #242b38;
        }
        .nav-mobile {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 0.3rem;
            padding: 0.8rem 0 1.2rem;
            border-top: 1px solid #2a3140;
            margin-top: 0.6rem;
        }
        .nav-mobile a {
            padding: 0.6rem 1rem;
            border-radius: 6px;
        }
        .nav-mobile.open {
            display: flex;
        }
        .breadcrumb {
            background: #1a1f28;
            padding: 0.7rem 1.5rem;
            font-size: 0.85rem;
            color: #8899bb;
            border-bottom: 1px solid #232b36;
        }
        .breadcrumb a {
            color: #7aa9ff;
        }
        .breadcrumb a:hover {
            color: #b3ccff;
        }
        .breadcrumb span {
            color: #5a6f8a;
        }
        .hero {
            padding: 2.5rem 0 1.5rem;
            text-align: center;
        }
        .hero p {
            font-size: 1.1rem;
            max-width: 800px;
            margin: 0 auto 1.8rem;
            color: #a8b9d9;
        }
        .hero-meta {
            font-size: 0.9rem;
            color: #7a8faf;
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .hero-meta i {
            margin-right: 0.4rem;
            color: #7aa9ff;
        }
        .search-box {
            background: #1a1f28;
            border-radius: 40px;
            padding: 0.3rem 0.3rem 0.3rem 1.5rem;
            display: flex;
            align-items: center;
            max-width: 520px;
            margin: 1.8rem auto 0;
            border: 1px solid #2e3a4a;
            transition: border 0.3s, box-shadow 0.3s;
        }
        .search-box:focus-within {
            border-color: #7aa9ff;
            box-shadow: 0 0 20px rgba(122, 169, 255, 0.12);
        }
        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 0.7rem 0;
            font-size: 1rem;
            color: #e8edf5;
            outline: none;
        }
        .search-box input::placeholder {
            color: #5a6f8a;
        }
        .search-box button {
            background: #7aa9ff;
            border: none;
            color: #0c0e13;
            padding: 0.6rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.15s;
        }
        .search-box button:hover {
            background: #96bdff;
            transform: scale(1.02);
        }
        main {
            flex: 1;
            padding: 1.5rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
            margin-top: 1.5rem;
        }
        @media (max-width: 920px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #171d26;
            border-radius: 16px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border: 1px solid #252e3b;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            color: #c8d6f0;
            border-bottom: 1px solid #252e3b;
            padding-bottom: 0.5rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #1f2733;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card li a {
            font-size: 0.92rem;
            display: block;
            padding: 0.2rem 0;
        }
        .sidebar-card .tag {
            display: inline-block;
            background: #1f2a3a;
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            font-size: 0.75rem;
            color: #7aa9ff;
            margin-left: 0.3rem;
        }
        .article-body {
            background: #11161e;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            border: 1px solid #1f2733;
        }
        .article-body img {
            margin: 1.8rem auto;
            border-radius: 16px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
        }
        .article-body .img-caption {
            text-align: center;
            font-size: 0.85rem;
            color: #7a8faf;
            margin-top: -1rem;
            margin-bottom: 1.8rem;
        }
        .highlight-box {
            background: #1a2330;
            border-left: 4px solid #7aa9ff;
            padding: 1.2rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .insight-card {
            background: #1a2330;
            border-radius: 14px;
            padding: 1.2rem 1.5rem;
            margin: 1.5rem 0;
            border: 1px solid #25303f;
        }
        .insight-card i {
            color: #7aa9ff;
            margin-right: 0.6rem;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.8rem 0;
        }
        .stat-item {
            background: #171d26;
            border-radius: 12px;
            padding: 1.2rem;
            text-align: center;
            border: 1px solid #252e3b;
        }
        .stat-item .num {
            font-size: 2rem;
            font-weight: 700;
            color: #7aa9ff;
            display: block;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: #8899bb;
            margin-top: 0.3rem;
        }
        .interaction-area {
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid #1f2733;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 700px) {
            .interaction-area {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
        }
        .interaction-card {
            background: #171d26;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            border: 1px solid #252e3b;
        }
        .interaction-card h4 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            background: #1a2330;
            border: 1px solid #2a3648;
            border-radius: 10px;
            padding: 0.7rem 1rem;
            font-size: 0.95rem;
            color: #e8edf5;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            border-color: #7aa9ff;
        }
        .interaction-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .interaction-card button {
            background: #7aa9ff;
            border: none;
            color: #0c0e13;
            font-weight: 600;
            padding: 0.7rem 1.5rem;
            border-radius: 40px;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background 0.2s, transform 0.15s;
            align-self: flex-start;
        }
        .interaction-card button:hover {
            background: #96bdff;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 0.4rem;
            font-size: 1.6rem;
            color: #3a4a5e;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.15s;
        }
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: #ffc857;
            transform: scale(1.1);
        }
        .rating-stars i.active {
            color: #ffc857;
        }
        friend-link {
            display: block;
            background: #14181f;
            border-top: 1px solid #252e3b;
            padding: 2rem 1.5rem;
            margin-top: 2rem;
        }
        friend-link .fl-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
            align-items: center;
            justify-content: center;
        }
        friend-link .fl-label {
            font-weight: 600;
            color: #8899bb;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        friend-link a {
            color: #7aa9ff;
            font-size: 0.92rem;
            padding: 0.2rem 0.4rem;
            border-radius: 4px;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #1f2733;
            color: #b3ccff;
        }
        footer {
            background: #0d1016;
            border-top: 1px solid #1f2733;
            padding: 1.8rem 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: #5a6f8a;
        }
        footer .copyright {
            max-width: 1200px;
            margin: 0 auto;
        }
        footer .copyright a {
            color: #7aa9ff;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .article-body {
                padding: 1.2rem 1rem;
            }
            .header-inner {
                padding: 0.6rem 1rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .hero {
                padding: 1.5rem 0 1rem;
            }
            .search-box {
                max-width: 100%;
                margin-left: 0.5rem;
                margin-right: 0.5rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.5rem 1rem;
                overflow-x: auto;
                white-space: nowrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .interaction-area {
                grid-template-columns: 1fr;
            }
            .hero-meta {
                gap: 1rem;
                font-size: 0.8rem;
            }
        }
        @media (min-width: 769px) {
            .nav-mobile {
                display: none !important;
            }
            .nav-desktop {
                display: flex !important;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0c0e13;
        }
        ::-webkit-scrollbar-thumb {
            background: #2a3648;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3e5068;
        }
        ::selection {
            background: #7aa9ff44;
            color: #fff;
        }
        .toc-list {
            list-style: none;
            padding: 0;
        }
        .toc-list li {
            padding: 0.3rem 0;
        }
        .toc-list li a {
            font-size: 0.92rem;
            color: #a8b9d9;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .toc-list li a:hover {
            color: #7aa9ff;
        }
        .toc-list li a i {
            font-size: 0.6rem;
            color: #5a6f8a;
        }
        .badge {
            display: inline-block;
            background: #1f2a3a;
            padding: 0.1rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            color: #7aa9ff;
        }