* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.8;
            color: #2d2a24;
            background: #faf7f2;
            padding: 0;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e67e22;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            letter-spacing: 2px;
            background: linear-gradient(135deg, #f7b731, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: none;
            font-family: 'Georgia', serif;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: rgba(255, 255, 255, 0.7);
            letter-spacing: 1px;
            font-weight: 300;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        nav.main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        nav.main-nav a {
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.2s;
            white-space: nowrap;
        }
        nav.main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f7b731;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 4px 8px;
        }
        .mobile-nav {
            display: none;
            background: #0d1b2a;
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .mobile-nav.open {
            max-height: 600px;
            padding: 16px 20px;
        }
        .mobile-nav a {
            display: block;
            color: rgba(255, 255, 255, 0.85);
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 1rem;
        }
        .mobile-nav a:hover {
            color: #f7b731;
        }
        .breadcrumb {
            background: #f0ebe3;
            padding: 10px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #e0d6c8;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #7f6b5d;
        }
        .breadcrumb a:hover {
            color: #c0392b;
        }
        .breadcrumb span {
            color: #a08c7a;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            color: #1a1a2e;
            margin-bottom: 12px;
            font-weight: 800;
        }
        .article-body h2 {
            font-size: 1.9rem;
            color: #1a1a2e;
            margin-top: 48px;
            margin-bottom: 18px;
            padding-bottom: 8px;
            border-bottom: 3px solid #f7b731;
        }
        .article-body h3 {
            font-size: 1.4rem;
            color: #2c3e50;
            margin-top: 32px;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.15rem;
            color: #34495e;
            margin-top: 24px;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #3d3730;
        }
        .article-body strong {
            color: #c0392b;
            font-weight: 700;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 10px;
            font-size: 1.02rem;
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
            border: 1px solid #e8e0d6;
        }
        .article-body .img-caption {
            font-size: 0.9rem;
            color: #8a7a6a;
            text-align: center;
            margin-top: -16px;
            margin-bottom: 24px;
            font-style: italic;
        }
        .update-badge {
            display: inline-block;
            background: #1a1a2e;
            color: #f7b731;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 28px 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 100px;
            align-self: start;
            border: 1px solid #ede8e0;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            color: #1a1a2e;
            margin-bottom: 16px;
            border-left: 4px solid #f7b731;
            padding-left: 12px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar li {
            margin-bottom: 10px;
            padding: 6px 0;
            border-bottom: 1px solid #f0ebe3;
        }
        .sidebar li a {
            color: #5a4a3a;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar li a:hover {
            color: #c0392b;
        }
        .sidebar li a::before {
            content: '\f061';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.7rem;
            color: #f7b731;
        }
        .search-box {
            background: #fff;
            border-radius: 12px;
            padding: 24px;
            margin: 32px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #ede8e0;
        }
        .search-box h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: #1a1a2e;
        }
        .search-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid #e0d6c8;
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
            background: #faf7f2;
        }
        .search-form input:focus {
            border-color: #c0392b;
        }
        .search-form button {
            background: #c0392b;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #e67e22;
        }
        .user-feedback {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 32px 0;
        }
        @media (max-width: 700px) {
            .user-feedback {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #ede8e0;
        }
        .feedback-card h3 {
            font-size: 1.15rem;
            color: #1a1a2e;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 2px solid #e0d6c8;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            background: #faf7f2;
            transition: border 0.2s;
            font-family: inherit;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #c0392b;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: #1a1a2e;
            color: #fff;
            border: none;
            padding: 12px 20px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .feedback-card button:hover {
            background: #c0392b;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating .fa-star.active {
            color: #f7b731;
        }
        footer {
            background: #1a1a2e;
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media (max-width: 768px) {
            footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        footer h4 {
            color: #f7b731;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        footer a {
            color: rgba(255, 255, 255, 0.7);
        }
        footer a:hover {
            color: #f7b731;
        }
        footer ul {
            list-style: none;
            padding: 0;
        }
        footer li {
            margin-bottom: 8px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            padding: 20px 24px;
            border-radius: 12px;
            margin-top: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(247, 183, 49, 0.15);
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            nav.main-nav a {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-body h1 {
                font-size: 1.9rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            main {
                padding: 24px 0 40px;
            }
            .sidebar {
                position: static;
                margin-top: 24px;
            }
        }
        @media (min-width: 769px) {
            .mobile-nav {
                display: none !important;
            }
        }
        .highlight-box {
            background: linear-gradient(135deg, #fdf6ed, #fef9f2);
            border-left: 4px solid #f7b731;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .highlight-box p {
            margin-bottom: 0;
        }
        .emoji-big {
            font-size: 1.3em;
        }
        .table-of-contents {
            background: #fff;
            border: 1px solid #ede8e0;
            border-radius: 12px;
            padding: 24px 28px;
            margin: 24px 0 32px;
        }
        .table-of-contents h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .table-of-contents ol {
            margin: 12px 0 0 20px;
        }
        .table-of-contents li {
            margin-bottom: 6px;
        }
        .table-of-contents a {
            color: #5a4a3a;
        }
        .table-of-contents a:hover {
            color: #c0392b;
        }
        .btn-top {
            display: inline-block;
            background: #1a1a2e;
            color: #fff;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-top: 8px;
        }
        .btn-top:hover {
            background: #c0392b;
            color: #fff;
        }