*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #0a1a3f;
            --primary-light: #1a2f5f;
            --accent: #f6b83d;
            --accent-hover: #f0a820;
            --bg: #f4f7fc;
            --card-bg: #ffffff;
            --text: #1e1e2a;
            --text-light: #555568;
            --border: #dce3ed;
            --shadow: 0 8px 32px rgba(10, 26, 63, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1120px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent-hover);
            text-decoration-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 {
            background: var(--primary);
            color: #fff;
            padding: 14px 0 12px;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px 18px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--accent);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: opacity var(--transition);
        }
        .my-logo:hover {
            opacity: 0.85;
            color: var(--accent);
        }
        .my-logo span {
            font-weight: 300;
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 6px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: border-color var(--transition), color var(--transition);
        }
        .nav-menu a:hover,
        .nav-menu a:focus-visible {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .breadcrumb {
            background: #e8edf5;
            padding: 10px 0;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 4px 12px;
            padding: 0 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #999;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
        }
        .main-content {
            padding: 32px 0 48px;
        }
        .main-content .container {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 32px 28px 40px;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 6px;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-light);
            margin-top: 32px;
            margin-bottom: 10px;
        }
        h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 22px;
            margin-bottom: 6px;
        }
        p {
            margin-bottom: 18px;
            font-size: 1rem;
        }
        .lead {
            font-size: 1.12rem;
            color: var(--text-light);
            border-left: 4px solid var(--accent);
            padding-left: 20px;
            margin-bottom: 28px;
            font-weight: 400;
        }
        .emoji {
            font-style: normal;
        }
        strong {
            color: var(--primary);
        }
        .highlight-box {
            background: #fef9ec;
            border-left: 5px solid var(--accent);
            padding: 16px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .feature-img {
            margin: 28px 0 30px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .feature-img img {
            width: 100%;
            object-fit: cover;
            aspect-ratio: 1200/675;
            background: #e0e6f0;
        }
        .feature-img figcaption {
            padding: 12px 16px;
            font-size: 0.88rem;
            color: var(--text-light);
            background: #f8fafd;
            border-top: 1px solid var(--border);
            font-style: italic;
        }
        .search-section {
            background: #eef3fa;
            border-radius: var(--radius-sm);
            padding: 22px 24px;
            margin: 32px 0 28px;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1 1 240px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border-color var(--transition);
            background: #fff;
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform 0.15s;
        }
        .search-form button:hover {
            background: var(--primary-light);
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0 20px;
        }
        .feedback-card {
            background: #f8fafd;
            border-radius: var(--radius-sm);
            padding: 22px 24px 26px;
            border: 1px solid var(--border);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea {
            width: 100%;
            padding: 11px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border-color var(--transition);
            background: #fff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: var(--accent);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            align-self: flex-start;
            padding: 10px 28px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            border: none;
            border-radius: 50px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background var(--transition), transform 0.15s;
        }
        .feedback-card button:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            justify-content: flex-end;
            font-size: 1.6rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ccc;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0 28px;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: var(--primary);
            color: #fff;
            padding: 13px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
        }
        .data-table tr:nth-child(even) {
            background: #f8fafd;
        }
        .data-table tr:hover {
            background: #eef3fa;
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 36px 0 30px;
            margin-top: 20px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px 48px;
        }
        .footer-inner h4 {
            color: var(--accent);
            font-size: 1.1rem;
            margin-bottom: 12px;
            margin-top: 0;
        }
        .footer-inner p {
            font-size: 0.9rem;
            margin-bottom: 8px;
        }
        friend-link {
            display: block;
            margin: 8px 0;
        }
        friend-link a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: underline;
            text-underline-offset: 2px;
            font-size: 0.92rem;
            transition: color var(--transition);
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            margin-top: 12px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .copyright strong {
            color: var(--accent);
            font-weight: 500;
        }
        .last-updated {
            display: inline-block;
            background: rgba(246, 184, 61, 0.18);
            color: var(--accent);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            margin-bottom: 16px;
        }
        @media (max-width: 820px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 0 8px;
                gap: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .main-content .container {
                padding: 20px 16px 28px;
            }
            .search-form input {
                flex: 1 1 100%;
            }
            .search-form button {
                width: 100%;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.25rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .lead {
                font-size: 1rem;
                padding-left: 14px;
            }
            .data-table {
                font-size: 0.82rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
            .feedback-card {
                padding: 16px 14px 20px;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        @media (min-width: 821px) {
            .nav-menu {
                display: flex !important;
            }
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 20px;
            background: var(--accent);
            color: var(--primary);
            padding: 12px 24px;
            border-radius: 0 0 8px 8px;
            font-weight: 700;
            z-index: 999;
            transition: top 0.25s;
        }
        .skip-link:focus {
            top: 0;
        }
        .anchor-offset {
            scroll-margin-top: 90px;
        }