*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --accent: #e8b830;
            --accent-dark: #c9a020;
            --bg: #f8f6f0;
            --bg-card: #ffffff;
            --text: #1e1e1e;
            --text-light: #555;
            --border: #ddd;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --font: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 70px;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        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(--primary);
            color: #fff;
            height: var(--header-h);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--accent);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: var(--accent);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
        }
        .nav-list li a {
            color: #f0ede8;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: var(--bg-card);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #aaa;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        main {
            padding: 40px 0 60px;
        }
        .article-header {
            margin-bottom: 40px;
        }
        .article-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .article-header .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            color: var(--text-light);
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border);
            padding-bottom: 16px;
            margin-bottom: 20px;
        }
        .article-header .meta i {
            margin-right: 6px;
            color: var(--accent-dark);
        }
        .hero-img {
            margin: 24px 0 32px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .content h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
        }
        .content h3 {
            font-size: 1.4rem;
            color: var(--primary-light);
            margin: 32px 0 12px;
        }
        .content h4 {
            font-size: 1.15rem;
            color: var(--text);
            margin: 24px 0 8px;
            font-weight: 600;
        }
        .content p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .content p b,
        .content p strong {
            color: var(--primary);
        }
        .content ul,
        .content ol {
            margin: 0 0 20px 24px;
        }
        .content li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .content blockquote {
            border-left: 4px solid var(--accent);
            background: #fef9e7;
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: #333;
        }
        .content .emoji-lg {
            font-size: 1.4rem;
        }
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin: 30px 0;
        }
        .info-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 20px;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--accent);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }
        .info-card i {
            font-size: 2rem;
            color: var(--accent-dark);
            margin-bottom: 12px;
        }
        .info-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 28px 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .table-wrap th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .table-wrap td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
        }
        .table-wrap tr:last-child td {
            border-bottom: none;
        }
        .table-wrap tr:hover td {
            background: #f5f2eb;
        }
        .search-box {
            background: var(--bg-card);
            padding: 28px 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 40px 0;
            text-align: center;
        }
        .search-box h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            max-width: 550px;
            margin: 16px auto 0;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            padding: 12px 28px;
            background: var(--accent);
            border: none;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: var(--accent-dark);
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 40px 0;
        }
        .feedback-card {
            background: var(--bg-card);
            padding: 24px 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 12px;
        }
        .feedback-card label {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s;
            width: 100%;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--accent);
            outline: none;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: var(--primary-light);
        }
        .star-wrap {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-wrap i.active {
            color: var(--accent);
        }
        friend-link {
            display: block;
            margin-top: 40px;
            padding: 28px 30px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        friend-link h3 {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }
        friend-link li a {
            color: var(--primary-light);
            font-weight: 500;
        }
        friend-link li a:hover {
            color: var(--accent-dark);
        }
        footer {
            background: var(--primary);
            color: #ddd;
            padding: 32px 0 24px;
            font-size: 0.9rem;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-inner .copy {
            color: #bbb;
        }
        .footer-inner .copy strong {
            color: var(--accent);
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        @media (max-width: 820px) {
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--primary);
                padding: 12px 20px 20px;
                box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-list li a {
                display: block;
                padding: 10px 12px;
                font-size: 1rem;
            }
            .hamburger {
                display: block;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .content h2 {
                font-size: 1.5rem;
            }
            .content h3 {
                font-size: 1.2rem;
            }
            .header-inner {
                padding: 0 16px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            :root {
                --header-h: 60px;
            }
            .article-header h1 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 14px;
            }
            .search-box {
                padding: 20px 16px;
            }
            .feedback-card {
                padding: 18px 16px;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb ol {
                padding: 0 14px;
                font-size: 0.8rem;
            }
        }
        a,
        button,
        .info-card,
        .btn-submit {
            transition: all 0.2s ease;
        }
        ::selection {
            background: var(--accent);
            color: var(--primary);
        }