*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a3a5c;
            --primary-light: #2c5f8a;
            --accent: #f5a623;
            --accent-dark: #d4891a;
            --bg: #faf8f5;
            --card-bg: #ffffff;
            --text: #1e1e1e;
            --text-light: #555;
            --border: #e0dcd6;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --radius: 16px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1120px;
            --header-h: 70px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-h);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-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 {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            height: var(--header-h);
            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;
            gap: 20px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            text-decoration: none;
            white-space: nowrap;
        }
        .my-logo span {
            color: var(--accent);
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .my-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        nav.main-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav.main-nav a {
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text);
            background: transparent;
            transition: background 0.2s, color 0.2s;
        }
        nav.main-nav a:hover {
            background: var(--accent);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        .breadcrumb-wrap {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
            font-size: 0.82rem;
        }
        .breadcrumb-wrap .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-wrap a {
            color: var(--text-light);
        }
        .breadcrumb-wrap a:hover {
            color: var(--accent-dark);
        }
        .breadcrumb-wrap .sep {
            color: #bbb;
            font-size: 0.7rem;
        }
        .breadcrumb-wrap .current {
            color: var(--primary);
            font-weight: 600;
        }
        main {
            padding: 30px 0 60px;
        }
        .article-header {
            margin-bottom: 32px;
        }
        .article-header h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .article-header .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.88rem;
            color: var(--text-light);
        }
        .article-header .meta i {
            margin-right: 4px;
        }
        .last-updated {
            font-weight: 600;
            color: var(--primary-light);
        }
        .hero-img {
            margin: 24px 0 32px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .hero-img img {
            width: 100%;
            aspect-ratio: 1200/630;
            object-fit: cover;
            background: #e8e4de;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media(max-width:900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-light);
            margin: 28px 0 12px;
        }
        .article-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin: 20px 0 8px;
        }
        .article-body p {
            margin-bottom: 16px;
            font-size: 1rem;
            line-height: 1.8;
        }
        .article-body p b,
        .article-body p strong {
            color: var(--primary);
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-body .highlight-box {
            background: var(--card-bg);
            border-left: 4px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .insight-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            margin: 24px 0;
            border: 1px solid var(--border);
        }
        .insight-card h4 {
            margin-top: 0;
        }
        .sidebar {
            position: sticky;
            top: calc(var(--header-h) + 20px);
            align-self: start;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card li a {
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text);
        }
        .sidebar-card li a:hover {
            color: var(--accent-dark);
        }
        .sidebar-card li a i {
            color: var(--accent);
            width: 16px;
            font-size: 0.8rem;
        }
        .search-section {
            margin: 20px 0 30px;
        }
        .search-form {
            display: flex;
            gap: 10px;
            max-width: 600px;
            background: var(--card-bg);
            border-radius: 60px;
            padding: 4px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .search-form input {
            flex: 1;
            border: none;
            padding: 12px 20px;
            border-radius: 60px;
            font-size: 0.95rem;
            background: transparent;
            outline: none;
            font-family: var(--font);
        }
        .search-form button {
            background: var(--accent);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font);
        }
        .search-form button:hover {
            background: var(--accent-dark);
        }
        .interaction-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0;
        }
        @media(max-width:650px) {
            .interaction-section {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .interaction-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card h3 i {
            color: var(--accent);
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 0.92rem;
            font-family: var(--font);
            background: var(--bg);
            transition: border 0.2s;
            outline: none;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            border-color: var(--accent);
        }
        .interaction-card textarea {
            resize: vertical;
            min-height: 80px;
        }
        .interaction-card .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
            font-family: var(--font);
            align-self: flex-start;
        }
        .interaction-card .btn:hover {
            background: var(--primary-light);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            user-select: none;
        }
        .rating-stars .star.active {
            color: var(--accent);
        }
        .rating-stars .star:hover,
        .rating-stars .star.hover {
            color: var(--accent);
        }
        footer {
            background: var(--primary);
            color: #fff;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        footer .container {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        footer a {
            color: #f0e6d3;
        }
        footer a:hover {
            color: var(--accent);
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
        }
        .footer-links a {
            font-size: 0.9rem;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
            padding: 16px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
        }
        friend-link a {
            color: #f0e6d3;
            padding: 2px 10px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.06);
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.14);
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            padding-top: 8px;
        }
        .copyright p {
            margin-bottom: 4px;
        }
        @media(max-width:768px) {
            .article-header h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .hamburger {
                display: block;
            }
            nav.main-nav {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 12px 20px 20px;
                border-bottom: 2px solid var(--border);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
                gap: 4px;
            }
            nav.main-nav.open {
                display: flex;
            }
            nav.main-nav a {
                padding: 10px 16px;
                border-radius: 10px;
                font-size: 0.95rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 16px;
                padding: 8px;
            }
            .search-form input {
                padding: 12px 16px;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .sidebar {
                position: static;
            }
            .breadcrumb-wrap {
                font-size: 0.72rem;
            }
            .interaction-card .rating-stars {
                font-size: 1.4rem;
            }
        }
        @media(max-width:480px) {
            .article-header h1 {
                font-size: 1.35rem;
            }
            .container {
                padding: 0 14px;
            }
            .header-inner {
                padding: 0 14px;
            }
        }
        .schema-hidden {
            display: none;
        }
        .anchor-offset {
            scroll-margin-top: calc(var(--header-h) + 16px);
        }