*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f7f5f2;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #c44536;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #8e2a1c;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1e1e2a 0%, #2d2d44 100%);
            color: #fff;
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f9dc5c;
            text-transform: uppercase;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
            color: #f9dc5c;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        .my-logo small {
            display: block;
            font-size: 0.6rem;
            color: #aaa;
            letter-spacing: 1px;
            text-transform: lowercase;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ddd;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            color: #f9dc5c;
            border-bottom-color: #f9dc5c;
            text-decoration: none;
        }
        .main-nav a.active {
            color: #f9dc5c;
            border-bottom-color: #f9dc5c;
        }
        .breadcrumb-wrap {
            background: #ece9e4;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d8d4ce;
        }
        .breadcrumb-wrap nav ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-wrap nav ol li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #888;
        }
        .breadcrumb-wrap a {
            color: #5a4a3a;
        }
        .breadcrumb-wrap a:hover {
            color: #c44536;
        }
        .breadcrumb-wrap .current {
            color: #2d2d44;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #2d2d44 0%, #1e1e2a 100%);
            color: #fff;
            padding: 3rem 0 3.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: "🧠";
            position: absolute;
            right: -2rem;
            bottom: -2rem;
            font-size: 16rem;
            opacity: 0.06;
            pointer-events: none;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .hero h1 .highlight {
            color: #f9dc5c;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 720px;
            margin: 0 auto 1.5rem;
            color: #ccc;
        }
        .hero .meta-badge {
            display: inline-flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 0.9rem;
            color: #aaa;
            background: rgba(255, 255, 255, 0.06);
            padding: 0.6rem 1.8rem;
            border-radius: 40px;
            backdrop-filter: blur(4px);
        }
        .hero .meta-badge i {
            margin-right: 0.4rem;
            color: #f9dc5c;
        }
        .search-section {
            background: #fff;
            padding: 1.5rem 0;
            border-bottom: 1px solid #e0dbd4;
        }
        .search-form {
            display: flex;
            gap: 0.75rem;
            max-width: 600px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .search-form input[type="text"] {
            flex: 1 1 260px;
            padding: 0.75rem 1.2rem;
            border: 2px solid #d8d4ce;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
            background: #faf9f7;
        }
        .search-form input[type="text"]:focus {
            border-color: #c44536;
            box-shadow: 0 0 0 4px rgba(196, 69, 54, 0.12);
        }
        .search-form button {
            background: #c44536;
            color: #fff;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #8e2a1c;
            transform: scale(1.02);
        }
        .main-content {
            padding: 2.5rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2.5rem;
        }
        @media(max-width:860px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            color: #1e1e2a;
            border-bottom: 3px solid #f9dc5c;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        .article-body h3 {
            font-size: 1.45rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: #2d2d44;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            color: #3d3d55;
        }
        .article-body p {
            margin-bottom: 1.2rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body .feature-img {
            border-radius: 16px;
            margin: 2rem 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .article-body .feature-img figcaption {
            font-size: 0.85rem;
            color: #666;
            text-align: center;
            margin-top: 0.6rem;
            font-style: italic;
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8e3dc;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #1e1e2a;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0ebe5;
        }
        .sidebar ul li:last-child {
            border-bottom: none;
        }
        .sidebar ul li a {
            color: #3d3d55;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar ul li a:hover {
            color: #c44536;
        }
        .sidebar .link-list-label {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #999;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .rating-wrap {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            border: 1px solid #e8e3dc;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.5rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #f9dc5c;
            cursor: pointer;
            transition: transform 0.1s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .rating-stars i.active {
            color: #f9a41a;
        }
        .rating-form {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .rating-form button {
            background: #2d2d44;
            color: #fff;
            border: none;
            padding: 0.5rem 1.6rem;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover {
            background: #1e1e2a;
        }
        .comments-area {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            border: 1px solid #e8e3dc;
            margin: 2.5rem 0;
        }
        .comments-area h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #d8d4ce;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            transition: border-color 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #c44536;
            outline: none;
        }
        .comment-form .form-row {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-top: 0.8rem;
        }
        .comment-form .form-row input {
            flex: 1 1 200px;
            padding: 0.6rem 1rem;
            border: 2px solid #d8d4ce;
            border-radius: 30px;
            font-size: 0.95rem;
        }
        .comment-form .form-row input:focus {
            border-color: #c44536;
            outline: none;
        }
        .comment-form button {
            background: #c44536;
            color: #fff;
            border: none;
            padding: 0.6rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            margin-top: 0.8rem;
        }
        .comment-form button:hover {
            background: #8e2a1c;
        }
        .site-footer {
            background: #1e1e2a;
            color: #bbb;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 4px solid #f9dc5c;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
        }
        .site-footer a {
            color: #ccc;
        }
        .site-footer a:hover {
            color: #f9dc5c;
        }
        .site-footer .copyright {
            text-align: center;
            padding-top: 1.8rem;
            margin-top: 1.8rem;
            border-top: 1px solid #333;
            font-size: 0.85rem;
            color: #888;
        }
        friend-link {
            display: block;
            margin: 0.8rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
        }
        @media(max-width:700px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.5rem;
                gap: 0.6rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.3rem 0;
                border-bottom: none;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
        }
        .text-muted {
            color: #888;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .badge {
            display: inline-block;
            background: #f9dc5c;
            color: #1e1e2a;
            padding: 0.15rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
        }
        .divider {
            height: 2px;
            background: linear-gradient(to right, #f9dc5c, transparent);
            margin: 2rem 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        table th {
            background: #2d2d44;
            color: #fff;
            padding: 0.65rem 1rem;
            text-align: left;
        }
        table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #e0dbd4;
        }
        table tr:hover td {
            background: #f9f6f0;
        }
        blockquote {
            border-left: 4px solid #c44536;
            padding: 0.8rem 1.2rem;
            margin: 1.5rem 0;
            background: #f9f6f0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #3d3d55;
        }
        blockquote cite {
            display: block;
            margin-top: 0.5rem;
            font-size: 0.85rem;
            color: #888;
            font-style: normal;
        }
        .tip-card {
            background: #eef6ed;
            border-left: 4px solid #3a8c3a;
            padding: 1rem 1.2rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .tip-card strong {
            color: #1e6b1e;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .last-updated {
            display: block;
            text-align: right;
            font-size: 0.85rem;
            color: #999;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e0dbd4;
        }