*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #ff6b35;
            --primary-dark: #e55a2b;
            --secondary: #004e89;
            --accent: #ffd166;
            --bg: #f8f9fa;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --border: #e9ecef;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --radius: 12px;
            --max-width: 1200px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: 72px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-card);
            border-bottom: 2px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.75rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--primary), #ff8c42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--primary);
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.88;
            text-decoration: none !important;
        }
        .my-logo span {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: var(--text-light);
            letter-spacing: 0.3px;
            display: block;
            margin-top: -4px;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-list a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border var(--transition), color var(--transition);
        }
        .nav-list a:hover {
            border-bottom-color: var(--primary);
            color: var(--primary);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--border);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            padding: 18px 0 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: var(--text-light);
            font-weight: 700;
        }
        .breadcrumb a {
            color: var(--secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .main-content {
            padding: 20px 0 60px;
        }
        .main-content h1 {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            margin: 0 0 12px;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .main-content h1 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .main-content h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin: 48px 0 18px;
            padding-bottom: 8px;
            border-bottom: 4px solid var(--primary);
            color: var(--text);
        }
        .main-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin: 32px 0 14px;
            color: var(--secondary);
        }
        .main-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 22px 0 10px;
            color: var(--text);
        }
        .main-content p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2d2d44;
        }
        .main-content ul,
        .main-content ol {
            margin: 0 0 20px 24px;
        }
        .main-content li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .main-content strong {
            color: var(--text);
            font-weight: 700;
        }
        .main-content .highlight-box {
            background: var(--bg-card);
            border-left: 5px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .main-content .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            font-size: 0.92rem;
            color: var(--text-light);
            margin: 8px 0 20px;
            padding: 12px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .meta-info i {
            margin-right: 6px;
            color: var(--primary);
        }
        .featured-image {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            padding: 10px 16px;
            font-size: 0.88rem;
            color: var(--text-light);
            background: var(--bg-card);
            border-bottom-left-radius: var(--radius);
            border-bottom-right-radius: var(--radius);
            border: 1px solid var(--border);
            border-top: 0;
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            padding: 10px 28px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background var(--transition), transform var(--transition);
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }
        .btn-secondary {
            background: var(--secondary);
        }
        .btn-secondary:hover {
            background: #003a6b;
        }
        .search-section {
            background: var(--bg-card);
            padding: 28px 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 36px 0;
            border: 1px solid var(--border);
        }
        .search-section form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border var(--transition);
        }
        .search-section input[type="text"]:focus {
            border-color: var(--primary);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        .interaction-card {
            background: var(--bg-card);
            padding: 24px 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 100px;
            font-family: var(--font);
            outline: none;
            transition: border var(--transition);
        }
        .interaction-card textarea:focus {
            border-color: var(--primary);
        }
        .interaction-card input[type="text"] {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border var(--transition);
        }
        .interaction-card input[type="text"]:focus {
            border-color: var(--primary);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 12px 0 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        .form-actions {
            display: flex;
            gap: 12px;
            margin-top: 14px;
            flex-wrap: wrap;
        }
        .related-links {
            background: var(--bg-card);
            padding: 24px 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 36px 0;
            border: 1px solid var(--border);
        }
        .related-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 12px 20px;
            list-style: none;
            margin: 16px 0 0;
            padding: 0;
        }
        .related-links li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            font-weight: 500;
        }
        .related-links li a i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .site-footer {
            background: var(--text);
            color: #e9ecef;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .site-footer a {
            color: #bbb;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid #333;
            font-size: 0.88rem;
            color: #888;
        }
        friend-link {
            display: block;
            margin: 12px 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0 6px 6px 0;
            padding: 4px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50px;
            font-size: 0.88rem;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        @media (max-width: 900px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
            }
            .main-content h1 {
                font-size: 2rem;
            }
            .main-content h2 {
                font-size: 1.6rem;
            }
            .main-content h3 {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 8px;
                border-bottom: 2px solid var(--border);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.25s ease;
                align-items: stretch;
            }
            .nav-list a {
                display: block;
                padding: 12px 16px;
                border-radius: 8px;
                border-bottom: none;
                font-size: 1.05rem;
            }
            .nav-list a:hover {
                background: var(--border);
                border-bottom: none;
            }
            #nav-toggle:checked~.nav-list {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .main-content h1 {
                font-size: 1.7rem;
            }
            .main-content {
                padding-top: 8px;
            }
            .search-section form {
                flex-direction: column;
            }
            .meta-info {
                flex-direction: column;
                gap: 6px;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.35rem;
            }
            .my-logo span {
                font-size: 0.6rem;
            }
            .container {
                padding: 0 12px;
            }
            .main-content h1 {
                font-size: 1.4rem;
            }
            .main-content h2 {
                font-size: 1.3rem;
            }
            .main-content p {
                font-size: 0.98rem;
            }
            .interaction-card {
                padding: 16px 18px;
            }
            .search-section {
                padding: 18px 18px;
            }
        }
        .anchor-offset {
            scroll-margin-top: 88px;
        }