* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #ff6b00;
            --primary-dark: #cc5500;
            --secondary: #1a1a2e;
            --accent: #e94560;
            --bg-light: #f8f9fa;
            --bg-dark: #0f0f1a;
            --text-light: #f0f0f0;
            --text-dark: #1a1a2e;
            --gray: #6c757d;
            --border: #dee2e6;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1140px;
            --gold: #ffd700;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--primary-dark);
            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;
        }
        header {
            background: var(--secondary);
            color: var(--text-light);
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            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;
            padding: 14px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: var(--gold);
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 300;
            color: #aaa;
            display: block;
            letter-spacing: 1px;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            padding: 4px 8px;
            transition: opacity 0.2s;
        }
        .hamburger:hover {
            opacity: 0.7;
        }
        nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #ddd;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        nav a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
            font-size: 0.8rem;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 10px 20px;
            font-size: 0.85rem;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 8px 0 4px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--gray);
            font-weight: 500;
        }
        main {
            padding: 30px 0 60px;
        }
        .page-header {
            text-align: center;
            padding: 30px 0 20px;
        }
        .page-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.2;
        }
        .page-header h1 span {
            color: var(--primary);
        }
        .page-header .subhead {
            font-size: 1.1rem;
            color: var(--gray);
            margin-top: 8px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        .last-updated {
            display: inline-block;
            margin-top: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .hero-img-wrap {
            margin: 30px auto 40px;
            max-width: 860px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: #e9ecef;
            position: relative;
        }
        .hero-img-wrap img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }
        .hero-img-wrap .img-caption {
            padding: 12px 18px;
            background: rgba(0, 0, 0, 0.05);
            font-size: 0.85rem;
            color: var(--gray);
            text-align: center;
            font-style: italic;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 20px;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--primary);
        }
        .article-body h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--secondary);
            margin: 32px 0 12px;
        }
        .article-body h3 i {
            color: var(--accent);
            margin-right: 8px;
            font-size: 1.2rem;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2d2d44;
            margin: 24px 0 8px;
        }
        .article-body p {
            margin-bottom: 16px;
            font-size: 1.02rem;
            color: #2d2d2d;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1rem;
        }
        .article-body .highlight-box {
            background: #fff3e6;
            border-left: 4px solid var(--primary);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .highlight-box strong {
            color: var(--primary-dark);
        }
        .article-body .tip {
            background: #e6f7ee;
            border-left: 4px solid #28a745;
            padding: 14px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
        .inline-img {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            background: #e9ecef;
        }
        .inline-img img {
            width: 100%;
            height: auto;
        }
        .inline-img .img-label {
            padding: 8px 16px;
            font-size: 0.85rem;
            color: var(--gray);
            background: #f1f3f5;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar .card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 22px 18px;
            margin-bottom: 28px;
        }
        .sidebar .card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--secondary);
            border-bottom: 2px solid var(--primary);
            padding-bottom: 6px;
        }
        .sidebar .card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar .card li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar .card li:last-child {
            border-bottom: none;
        }
        .sidebar .card li a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar .card li a i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }
        .search-section {
            background: var(--secondary);
            color: var(--text-light);
            padding: 40px 20px;
            border-radius: var(--radius);
            margin: 40px 0;
            text-align: center;
        }
        .search-section h2 {
            font-size: 1.8rem;
            margin-bottom: 8px;
        }
        .search-section p {
            opacity: 0.8;
            margin-bottom: 20px;
        }
        .search-form {
            display: flex;
            max-width: 540px;
            margin: 0 auto;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            background: #fff;
            color: #333;
        }
        .search-form button {
            padding: 14px 32px;
            border: none;
            border-radius: 40px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .interaction-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 50px 0 30px;
        }
        @media (max-width: 650px) {
            .interaction-area {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 26px 24px;
        }
        .interaction-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--secondary);
        }
        .interaction-card h3 i {
            color: var(--primary);
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border 0.2s;
            background: #fafafa;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            border-color: var(--primary);
            background: #fff;
        }
        .interaction-card textarea {
            resize: vertical;
            min-height: 90px;
        }
        .interaction-card button {
            padding: 12px 20px;
            border: none;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .interaction-card button:hover {
            background: var(--primary-dark);
        }
        .interaction-card .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.5rem;
            color: #ccc;
            cursor: pointer;
            direction: rtl;
        }
        .interaction-card .star-rating input {
            display: none;
        }
        .interaction-card .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
            color: #ddd;
        }
        .interaction-card .star-rating label:hover,
        .interaction-card .star-rating label:hover~label,
        .interaction-card .star-rating input:checked~label {
            color: var(--gold);
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-item summary {
            padding: 16px 22px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            transition: background 0.2s;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-item summary:hover {
            background: #f8f4f0;
        }
        .faq-item .faq-answer {
            padding: 0 22px 18px;
            color: #444;
            line-height: 1.6;
        }
        footer {
            background: var(--secondary);
            color: #ccc;
            padding: 40px 20px 20px;
            margin-top: 60px;
            border-top: 4px solid var(--primary);
        }
        footer .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 700px) {
            footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        footer h4 {
            color: var(--primary);
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        footer a {
            color: #bbb;
        }
        footer a:hover {
            color: #fff;
        }
        footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        footer li {
            padding: 4px 0;
        }
        friend-link {
            display: block;
            padding: 12px 0 4px;
        }
        friend-link a {
            display: inline-block;
            margin: 0 12px 6px 0;
            padding: 4px 12px;
            background: rgba(255, 107, 0, 0.15);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        friend-link a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid #333;
            font-size: 0.85rem;
            color: #888;
        }
        .copyright strong {
            color: #ccc;
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--secondary);
                padding: 12px 0 16px;
                border-top: 1px solid #333;
                margin-top: 10px;
            }
            nav.show {
                display: flex;
            }
            nav a {
                padding: 10px 20px;
                width: 100%;
                border-radius: 0;
                border-bottom: 1px solid #2a2a3e;
            }
            .page-header h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .search-form input {
                min-width: 140px;
            }
            .interaction-area {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .page-header h1 {
                font-size: 1.5rem;
            }
            .sidebar .card {
                padding: 16px 12px;
            }
        }
        .anchor-offset {
            scroll-margin-top: 80px;
        }
        .article-body p,
        .article-body li {
            letter-spacing: 0.01em;
        }
        .article-body .lead {
            font-size: 1.15rem;
            font-weight: 500;
            color: #1a1a2e;
        }