*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #ed1c24;
            --primary-dark: #b3131a;
            --secondary: #ffc72c;
            --accent: #00a651;
            --dark: #1a1a2e;
            --gray: #f4f4f9;
            --text: #2d2d44;
            --light-text: #6b6b80;
            --white: #ffffff;
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: all 0.3s ease;
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--gray);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--white);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 10px 0;
        }
        .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, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--primary);
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list a {
            display: block;
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }
        .nav-list a:hover,
        .nav-list a:focus-visible {
            background: var(--primary);
            color: var(--white);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: var(--gray);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: var(--white);
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: var(--light-text);
        }
        .breadcrumb a {
            color: var(--light-text);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--dark);
        }
        .content-body h1 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .last-updated {
            display: inline-block;
            background: var(--secondary);
            color: var(--dark);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .content-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 4px solid var(--primary);
            color: var(--dark);
        }
        .content-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--dark);
        }
        .content-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: var(--text);
        }
        .content-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .content-body ul,
        .content-body ol {
            margin: 12px 0 24px 24px;
        }
        .content-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .feature-box {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 32px;
            box-shadow: var(--shadow);
            border-left: 6px solid var(--primary);
            margin: 32px 0;
        }
        .feature-box p:last-child {
            margin-bottom: 0;
        }
        .insight-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            margin: 24px 0;
            transition: var(--transition);
        }
        .insight-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
        }
        .insight-card h4 {
            margin-top: 0;
            color: var(--primary);
        }
        .featured-image {
            margin: 36px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--white);
            padding: 8px;
        }
        .featured-image img {
            border-radius: calc(var(--radius) - 4px);
            width: 100%;
        }
        .featured-image figcaption {
            padding: 12px 16px 4px;
            font-size: 0.9rem;
            color: var(--light-text);
            font-style: italic;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin-bottom: 28px;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
            border-bottom: 2px solid var(--gray);
            padding-bottom: 10px;
        }
        .sidebar-link-list {
            list-style: none;
        }
        .sidebar-link-list li+li {
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px solid var(--gray);
        }
        .sidebar-link-list a {
            display: flex;
            align-items: baseline;
            gap: 8px;
            font-size: 0.92rem;
            color: var(--text);
        }
        .sidebar-link-list a i {
            color: var(--primary);
            font-size: 0.7rem;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .sidebar-link-list a:hover {
            color: var(--primary);
        }
        .form-section {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 32px;
            box-shadow: var(--shadow);
            margin: 40px 0;
        }
        .form-section h3 {
            margin-top: 0;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e8;
            border-radius: 8px;
            font-size: 1rem;
            font-family: var(--font);
            transition: var(--transition);
            background: var(--gray);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            background: var(--white);
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--primary);
            color: var(--white);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(237, 28, 36, 0.3);
        }
        .btn-secondary {
            background: var(--dark);
        }
        .btn-secondary:hover {
            background: #2d2d44;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            transition: var(--transition);
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--secondary);
        }
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 0 24px;
            margin-top: 60px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .site-footer h4 {
            color: var(--white);
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 700;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.75);
        }
        .site-footer a:hover {
            color: var(--secondary);
        }
        friend-link {
            display: block;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--white);
                padding: 12px 0;
                border-radius: var(--radius);
                box-shadow: var(--shadow);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                margin-top: 8px;
                z-index: 999;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .nav-list a {
                padding: 12px 24px;
                border-radius: 0;
            }
            .header-inner {
                position: relative;
            }
            .content-body h1 {
                font-size: 1.8rem;
            }
            .content-body h2 {
                font-size: 1.5rem;
            }
            .content-body h3 {
                font-size: 1.2rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .form-section {
                padding: 20px;
            }
            .feature-box {
                padding: 20px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .content-body h1 {
                font-size: 1.5rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .highlight {
            background: rgba(255, 199, 44, 0.25);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .tag {
            display: inline-block;
            background: var(--gray);
            padding: 2px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--light-text);
            margin-right: 4px;
        }
        .tag-red {
            background: var(--primary);
            color: var(--white);
        }