*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f9f7f4;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0 0 2rem 0;
        }
        a {
            color: #d46a2b;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #b24e1a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #1a2a3a 0%, #0f1a26 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #ff8a4c;
            background: linear-gradient(135deg, #ff8a4c, #f5c542);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(255, 138, 76, 0.25);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: #b0c4d9;
            color: #b0c4d9;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.6rem;
            align-items: center;
            list-style: none;
        }
        .nav-menu a {
            color: #e6edf5;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.25s, color 0.25s;
        }
        .nav-menu a:hover {
            border-bottom-color: #ff8a4c;
            color: #ff8a4c;
            text-decoration: none;
        }
        .nav-menu .active-link {
            border-bottom-color: #ff8a4c;
            color: #ff8a4c;
        }
        .breadcrumb-wrap {
            background: #fff;
            padding: 0.6rem 0;
            border-bottom: 1px solid #e4ddd5;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.6rem;
            align-items: center;
        }
        .breadcrumb-wrap ol li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #b0a090;
            font-weight: 600;
        }
        .breadcrumb-wrap a {
            color: #7a6a5a;
        }
        .breadcrumb-wrap a:hover {
            color: #d46a2b;
        }
        .breadcrumb-wrap .current {
            color: #1e1e2a;
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.2rem;
            margin: 2rem 0;
        }
        @media (max-width: 900px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 0.3rem 0;
            color: #0f1a26;
            background: linear-gradient(135deg, #0f1a26, #d46a2b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-body .sub-title {
            font-size: 1.05rem;
            color: #5a4e42;
            margin-bottom: 1.2rem;
            border-left: 4px solid #ff8a4c;
            padding-left: 1rem;
        }
        .article-body h2 {
            font-size: 1.75rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem 0;
            color: #1a2a3a;
            border-bottom: 3px solid #ff8a4c;
            padding-bottom: 0.3rem;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 1.8rem 0 0.7rem 0;
            color: #2d3f50;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.4rem 0 0.5rem 0;
            color: #3d5266;
        }
        .article-body p {
            margin-bottom: 1.1rem;
            color: #2c2c3a;
        }
        .article-body strong {
            color: #b24e1a;
        }
        .article-body ul,
        .article-body ol {
            margin: 0.6rem 0 1.2rem 1.6rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .highlight-box {
            background: #f0ebe4;
            border-left: 6px solid #ff8a4c;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.4rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .feature-image {
            margin: 1.6rem 0;
            border-radius: 14px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.2rem 1rem;
            text-align: center;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
            border: 1px solid #ece6df;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
        }
        .stat-card .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #d46a2b;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #5a4e42;
            margin-top: 0.2rem;
        }
        .linked-list {
            background: #f5f0ea;
            border-radius: 14px;
            padding: 1.2rem 1.6rem;
            margin: 1.6rem 0;
        }
        .linked-list h4 {
            margin-top: 0;
        }
        .linked-list ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.3rem 1.2rem;
        }
        .linked-list li::before {
            content: "🔗 ";
            font-size: 0.8rem;
        }
        .linked-list a {
            font-weight: 500;
        }
        @media (max-width: 500px) {
            .linked-list ul {
                grid-template-columns: 1fr;
            }
        }
        .last-updated {
            display: inline-block;
            background: #e8e2da;
            padding: 0.25rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #4a3e32;
            margin-top: 0.6rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.4rem 1.2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #ece6df;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #1a2a3a;
            margin-bottom: 0.8rem;
            border-left: 4px solid #ff8a4c;
            padding-left: 0.7rem;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.5rem;
            padding: 0.2rem 0;
            border-bottom: 1px solid #f0eae2;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .sidebar-card a i {
            width: 1.2rem;
            color: #d46a2b;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin: 0.8rem 0 0 0;
        }
        .search-form input[type="search"] {
            flex: 1;
            padding: 0.65rem 1rem;
            border: 2px solid #ddd6ce;
            border-radius: 30px;
            font-size: 0.9rem;
            background: #fcfaf8;
            transition: border-color 0.2s;
        }
        .search-form input[type="search"]:focus {
            outline: none;
            border-color: #ff8a4c;
        }
        .search-form button {
            background: #d46a2b;
            border: none;
            border-radius: 30px;
            padding: 0.6rem 1.2rem;
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #b24e1a;
            transform: scale(0.97);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem;
            margin: 1.2rem 0 0 0;
        }
        @media (max-width: 600px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .comment-form textarea,
        .comment-form input,
        .score-form select,
        .score-form input {
            width: 100%;
            padding: 0.65rem 0.9rem;
            border: 2px solid #ddd6ce;
            border-radius: 10px;
            font-size: 0.9rem;
            background: #fcfaf8;
            transition: border-color 0.2s;
            font-family: inherit;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .score-form select:focus,
        .score-form input:focus {
            outline: none;
            border-color: #ff8a4c;
        }
        .comment-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-grid .btn-submit {
            background: #1a2a3a;
            color: #fff;
            border: none;
            padding: 0.6rem 1.2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .feedback-grid .btn-submit:hover {
            background: #0f1a26;
            transform: scale(0.97);
        }
        .score-form .star-wrap {
            display: flex;
            gap: 0.3rem;
            font-size: 1.5rem;
            color: #e0d6cc;
            margin: 0.3rem 0;
        }
        .score-form .star-wrap .fa-star.active {
            color: #f5c542;
        }
        .site-footer {
            background: #0f1a26;
            color: #cbd5e0;
            padding: 2rem 0 1.2rem;
            margin-top: 2.5rem;
            border-radius: 24px 24px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 1.8rem;
        }
        @media (max-width: 700px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }
        .footer-inner h4 {
            color: #ff8a4c;
            font-size: 1.05rem;
            margin-bottom: 0.6rem;
        }
        .footer-inner a {
            color: #b0c4d9;
        }
        .footer-inner a:hover {
            color: #ff8a4c;
        }
        friend-link {
            display: block;
            margin-top: 1.4rem;
            padding-top: 1rem;
            border-top: 1px solid #2a3a4a;
        }
        friend-link h4 {
            font-size: 1rem;
            color: #ff8a4c;
            margin-bottom: 0.5rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.2rem;
        }
        friend-link li::before {
            content: "🌐 ";
            font-size: 0.75rem;
        }
        .copyright {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.82rem;
            color: #8a9aa8;
            border-top: 1px solid #1e2e3e;
            padding-top: 1rem;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem 0;
                padding: 0.8rem 0 0.4rem 0;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 0.4rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 0.4rem 0;
            }
            .article-body h1 {
                font-size: 1.6rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 420px) {
            .header-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
        }
        .section-anchor {
            scroll-margin-top: 80px;
        }