* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --secondary: #f5c518;
            --accent: #e8453c;
            --bg: #f8f9fc;
            --card-bg: #ffffff;
            --text: #1e2a3a;
            --text-light: #4a5a6a;
            --border: #dce1e8;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            --radius: 16px;
            --radius-sm: 10px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }
        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);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: var(--primary);
            color: #fff;
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, var(--secondary), #ffdd44);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            color: #fff;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--secondary);
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .navbar {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .navbar a {
            color: #e8edf4;
            font-weight: 500;
            font-size: 0.92rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .navbar a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }
        .navbar a.active {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }
        .breadcrumb {
            padding: 16px 0 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .breadcrumb .sep {
            margin: 0 4px;
            color: #aab;
        }
        .page-wrap {
            padding: 20px 0 60px;
        }
        .featured-image {
            margin: 24px 0 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--card-bg);
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 12px 20px;
            font-size: 0.88rem;
            color: var(--text-light);
            background: var(--card-bg);
            border-top: 1px solid var(--border);
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 12px;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 48px 0 16px;
            color: var(--primary);
            border-left: 6px solid var(--secondary);
            padding-left: 18px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--primary-light);
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: var(--text);
        }
        p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-light);
            font-weight: 400;
            margin-bottom: 24px;
            border-left: 4px solid var(--secondary);
            padding-left: 20px;
            background: #f4f6fa;
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        ul,
        ol {
            margin: 0 0 20px 24px;
        }
        li {
            margin-bottom: 8px;
        }
        .highlight-box {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow);
            margin: 28px 0;
            border-left: 6px solid var(--secondary);
        }
        .highlight-box h4 {
            margin-top: 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: var(--card-bg);
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f0f4fa;
        }
        .search-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 30px;
            box-shadow: var(--shadow);
            margin: 40px 0;
        }
        .search-section h2 {
            margin-top: 0;
            border-left-color: var(--accent);
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-family: var(--font);
            transition: border-color 0.2s;
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--primary-light);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        .feedback-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 16px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-family: var(--font);
            transition: border-color 0.2s;
            background: #fafcff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            outline: none;
            border-color: var(--primary-light);
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card button {
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card button:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
            color: #ddd;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--secondary);
        }
        .last-updated {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 16px;
        }
        .site-footer {
            background: var(--primary);
            color: #d0d8e4;
            padding: 48px 0 32px;
            margin-top: 60px;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .site-footer h4 {
            color: #fff;
            margin-bottom: 16px;
            font-size: 1.1rem;
        }
        .site-footer a {
            color: #b0c4d8;
            display: block;
            margin-bottom: 6px;
            font-size: 0.92rem;
        }
        .site-footer a:hover {
            color: var(--secondary);
        }
        .site-footer .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            margin-top: 16px;
            text-align: center;
            font-size: 0.88rem;
            color: #9aafc4;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            margin-bottom: 6px;
            padding: 4px 0;
        }
        @media (max-width: 900px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: block;
            }
            .navbar {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                transform: translateY(-110%);
                opacity: 0;
                transition: transform 0.35s ease, opacity 0.35s ease;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                pointer-events: none;
                align-items: stretch;
            }
            .navbar.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .navbar a {
                padding: 10px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                font-size: 1rem;
            }
            .navbar a:last-child {
                border-bottom: none;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
                padding-left: 14px;
            }
            h3 {
                font-size: 1.2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .highlight-box {
                padding: 20px;
            }
            .feedback-card {
                padding: 20px;
            }
            .search-section {
                padding: 20px;
            }
            .breadcrumb {
                font-size: 0.78rem;
                padding: 12px 0 4px;
            }
        }
        @media (max-width: 480px) {
            :root {
                --header-h: 60px;
            }
            .my-logo {
                font-size: 1.25rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            .lead {
                font-size: 1rem;
                padding: 12px 16px;
            }
            .container {
                padding: 0 14px;
            }
            .featured-image figcaption {
                font-size: 0.78rem;
                padding: 8px 14px;
            }
            th,
            td {
                padding: 10px 12px;
                font-size: 0.82rem;
            }
        }
        .badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary);
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .divider {
            height: 2px;
            background: linear-gradient(to right, var(--border), transparent);
            margin: 32px 0;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }