*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f8f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            color: #fff;
            padding: 16px 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;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo i {
            -webkit-text-fill-color: #fbbf24;
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            list-style: none;
        }
        .nav-menu li a {
            color: #e2e8f0;
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fbbf24;
            text-decoration: none;
        }
        .nav-menu li a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 12px 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 14px;
            font-size: 0.9rem;
        }
        .breadcrumb ul li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb ul li+li::before {
            content: "›";
            color: #94a3b8;
            font-weight: 700;
            margin-right: 6px;
        }
        .breadcrumb ul li a {
            color: #475569;
        }
        .breadcrumb ul li a:hover {
            color: #2563eb;
        }
        .breadcrumb ul li:last-child {
            color: #1e293b;
            font-weight: 600;
        }
        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;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0f172a;
        }
        .article-body h1 i {
            color: #f59e0b;
            margin-right: 10px;
        }
        .article-body .lead {
            font-size: 1.2rem;
            color: #475569;
            margin-bottom: 28px;
            border-left: 4px solid #f59e0b;
            padding-left: 20px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #0f172a;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 8px;
        }
        .article-body h2 i {
            color: #2563eb;
            margin-right: 10px;
        }
        .article-body h3 {
            font-size: 1.45rem;
            font-weight: 700;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #1e293b;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #334155;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #1e293b;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }
        .article-body .highlight-box {
            background: #fef9e7;
            border-left: 5px solid #f59e0b;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .highlight-box strong {
            color: #92400e;
        }
        .article-body .stat-badge {
            display: inline-block;
            background: #dbeafe;
            color: #1e40af;
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .img-wrapper {
            margin: 32px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .img-wrapper figcaption {
            background: #f1f5f9;
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #475569;
            text-align: center;
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 28px 24px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 100px;
            height: fit-content;
            border: 1px solid #e2e8f0;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0f172a;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar ul li a {
            color: #2563eb;
            font-weight: 500;
        }
        .sidebar ul li a:hover {
            color: #1d4ed8;
        }
        .form-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid #e2e8f0;
        }
        .form-section h2 {
            margin-top: 0 !important;
        }
        .form-card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
            margin-bottom: 24px;
        }
        .form-card label {
            font-weight: 600;
            display: block;
            margin-bottom: 6px;
            color: #1e293b;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #f8fafc;
            margin-bottom: 16px;
        }
        .form-card input:focus,
        .form-card textarea:focus {
            border-color: #2563eb;
            outline: none;
            background: #fff;
        }
        .form-card textarea {
            min-height: 120px;
            resize: vertical;
        }
        .form-card .btn {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 10px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .form-card .btn:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
        }
        .form-card .btn i {
            font-size: 1.1rem;
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            color: #cbd5e1;
            cursor: pointer;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f59e0b;
            transform: scale(1.1);
        }
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 32px;
            margin-top: 60px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media(max-width:768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .site-footer h4 {
            color: #f1f5f9;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .site-footer a {
            color: #94a3b8;
        }
        .site-footer a:hover {
            color: #fbbf24;
            text-decoration: none;
        }
        .site-footer friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            padding: 20px 24px;
            margin: 20px 0 24px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            padding: 0;
            margin: 12px 0 0;
        }
        .site-footer friend-link ul li a {
            font-size: 0.95rem;
        }
        .site-footer .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 24px;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        .site-footer .copyright strong {
            color: #94a3b8;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(15, 23, 42, 0.98);
                padding: 16px 0;
                border-radius: 12px;
                margin-top: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .article-body h1 {
                font-size: 1.9rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.25rem;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .form-card {
                padding: 20px;
            }
            .sidebar {
                position: static;
                margin-top: 32px;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.6rem;
            }
            .breadcrumb ul {
                font-size: 0.8rem;
                gap: 4px 10px;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
        }
        .tag {
            display: inline-block;
            background: #e2e8f0;
            color: #1e293b;
            padding: 2px 12px;
            border-radius: 14px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 4px;
        }
        .last-update {
            color: #64748b;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 20px;
        }
        .last-update i {
            color: #2563eb;
        }