*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        :focus-visible {
            outline: 2px solid #f5a623;
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #b5631a;
            text-decoration: underline;
            transition: color 0.2s;
        }
        a:hover {
            color: #7a3e0e;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 100%);
            color: #fff;
            padding: 12px 0;
            border-bottom: 3px solid #f5a623;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5a623;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo:hover {
            color: #ffcd7a;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #b5631a;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #f5a623;
            color: #f5a623;
            font-size: 1.4rem;
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px 18px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #e0e0e0;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-menu a:hover {
            color: #f5a623;
            border-bottom-color: #f5a623;
        }
        .nav-menu a.active {
            color: #f5a623;
            border-bottom-color: #f5a623;
        }
        .breadcrumb {
            background: #e9ecf3;
            padding: 10px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d5e0;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            gap: 4px 8px;
        }
        .breadcrumb a {
            color: #4a4a5a;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #b5631a;
        }
        .breadcrumb span {
            color: #6a6a7a;
        }
        .breadcrumb .current {
            color: #1a1a2e;
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 36px;
            padding: 32px 0 48px;
        }
        @media (max-width: 820px) {
            .main-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .article-body h1 {
            font-size: 2.2rem;
            line-height: 1.2;
            margin: 0 0 12px;
            color: #0f0f1a;
        }
        .article-body h1 i {
            color: #f5a623;
            margin-right: 8px;
        }
        .article-body .meta {
            color: #5a5a6a;
            font-size: 0.95rem;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .article-body .meta i {
            margin-right: 4px;
        }
        .article-body h2 {
            font-size: 1.6rem;
            margin: 40px 0 14px;
            color: #1a1a2e;
            border-left: 5px solid #f5a623;
            padding-left: 14px;
        }
        .article-body h3 {
            font-size: 1.25rem;
            margin: 28px 0 10px;
            color: #2a2a3e;
        }
        .article-body h4 {
            font-size: 1.05rem;
            margin: 22px 0 8px;
            color: #3a3a4e;
            font-weight: 600;
        }
        .article-body p {
            margin: 0 0 16px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 18px 24px;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body blockquote {
            border-left: 4px solid #f5a623;
            background: #f1f3f8;
            padding: 12px 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #2a2a3e;
        }
        .article-body .highlight-box {
            background: #eef0f7;
            border-radius: 12px;
            padding: 18px 22px;
            margin: 20px 0;
            border: 1px solid #d0d5e0;
        }
        .article-body img {
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .article-body .img-caption {
            font-size: 0.9rem;
            color: #5a5a6a;
            text-align: center;
            margin-top: -16px;
            margin-bottom: 20px;
        }
        .sidebar {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e5e8f0;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.1rem;
            margin-bottom: 14px;
            color: #1a1a2e;
            border-bottom: 2px solid #f5a623;
            padding-bottom: 6px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .sidebar li {
            margin-bottom: 8px;
        }
        .sidebar a {
            color: #3a3a4e;
            text-decoration: none;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 0;
        }
        .sidebar a:hover {
            color: #b5631a;
        }
        .sidebar a i {
            width: 18px;
            color: #f5a623;
            font-size: 0.85rem;
        }
        .search-form {
            display: flex;
            border: 2px solid #d0d5e0;
            border-radius: 40px;
            overflow: hidden;
            background: #fff;
            margin-bottom: 24px;
        }
        .search-form input {
            flex: 1;
            border: none;
            padding: 10px 18px;
            font-size: 0.95rem;
            background: transparent;
            outline: none;
        }
        .search-form button {
            background: #f5a623;
            border: none;
            padding: 0 20px;
            color: #fff;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #d48e1a;
        }
        .feedback-section {
            background: #ffffff;
            border-radius: 16px;
            padding: 28px 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e5e8f0;
            margin-top: 40px;
        }
        .feedback-section h2 {
            border-left: 5px solid #f5a623;
            padding-left: 14px;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            color: #1a1a2e;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid #d0d5e0;
            border-radius: 8px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f5a623;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .form-row .form-group {
            flex: 1 1 180px;
        }
        .btn {
            background: #1a1a2e;
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: #2a2a3e;
            transform: scale(1.02);
        }
        .btn-primary {
            background: #f5a623;
            color: #1a1a2e;
        }
        .btn-primary:hover {
            background: #e0961a;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 6px;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #d0d5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5a623;
        }
        friend-link {
            display: block;
            background: #1a1a2e;
            color: #e0e0e0;
            padding: 24px 0;
            margin-top: 20px;
            border-top: 3px solid #f5a623;
        }
        friend-link .container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 28px;
            justify-content: center;
        }
        friend-link a {
            color: #f5a623;
            text-decoration: none;
            font-weight: 500;
        }
        friend-link a:hover {
            color: #ffcd7a;
            text-decoration: underline;
        }
        .site-footer {
            background: #0f0f1a;
            color: #b0b0c0;
            padding: 20px 0;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
        }
        .site-footer a {
            color: #f5a623;
            text-decoration: none;
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        @media (max-width: 680px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0 4px;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 8px 12px;
                border-left: 3px solid transparent;
            }
            .nav-menu a:hover {
                border-left-color: #f5a623;
                background: rgba(245, 166, 35, 0.05);
            }
            .article-body h1 {
                font-size: 1.6rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .sidebar {
                position: static;
            }
            .header-inner {
                gap: 8px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 420px) {
            .container {
                padding: 0 12px;
            }
            .feedback-section {
                padding: 18px 14px;
            }
            .form-row {
                flex-direction: column;
            }
        }
        .text-small {
            font-size: 0.9rem;
            color: #5a5a6a;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .divider {
            border: none;
            border-top: 2px dashed #d0d5e0;
            margin: 32px 0;
        }
        .schema-hidden {
            display: none;
        }