*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fc;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0d47a1;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1565c0;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0d1b3e;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1.2rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 1rem;
            border-left: 5px solid #ffb300;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.8rem;
            color: #1a237e;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.5rem;
            color: #283593;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.2rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        blockquote {
            border-left: 4px solid #ffb300;
            background: #fff8e1;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #3e2723;
        }
        hr {
            border: none;
            border-top: 2px dashed #cfd8dc;
            margin: 2.5rem 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #fff;
            border-radius: 20px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
            padding: 1.5rem 2rem 2rem;
        }
        @media (max-width: 640px) {
            .container {
                padding: 1rem 1rem 1.5rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            body {
                padding: 0 0.5rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.8rem;
            border-bottom: 2px solid #e8edf3;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0d1b3e, #1a237e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #ffb300;
            font-size: 1.7rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0d1b3e;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e8edf3;
        }
        .primary-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1.2rem;
            align-items: center;
        }
        .primary-nav a {
            font-weight: 500;
            padding: 0.3rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            color: #1a1a2e;
        }
        .primary-nav a:hover {
            border-bottom-color: #ffb300;
            color: #0d1b3e;
            text-decoration: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.6rem 0 0.2rem;
            margin: 0;
            font-size: 0.85rem;
            color: #607d8b;
            width: 100%;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.6rem;
            color: #90a4ae;
        }
        .breadcrumb a {
            color: #546e7a;
        }
        .breadcrumb a:hover {
            color: #0d47a1;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 0.8rem;
                gap: 0.3rem 0;
                background: #fafcff;
                padding: 0.8rem 1rem;
                border-radius: 14px;
                border: 1px solid #e0e7ef;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 0.5rem 0.2rem;
                border-bottom: 1px solid #eef3f8;
            }
        }
        .search-wrap {
            display: flex;
            max-width: 520px;
            margin: 1.8rem auto 2.2rem;
            border-radius: 60px;
            overflow: hidden;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #dce3ec;
            background: #fff;
        }
        .search-wrap input {
            flex: 1;
            border: none;
            padding: 0.85rem 1.4rem;
            font-size: 1rem;
            outline: none;
            background: transparent;
            font-family: inherit;
        }
        .search-wrap button {
            background: #1a237e;
            color: #fff;
            border: none;
            padding: 0.85rem 1.8rem;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-wrap button:hover {
            background: #0d1b3e;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.2rem;
            margin: 2rem 0;
        }
        .feature-card {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.2rem 1.2rem 1.5rem;
            border: 1px solid #e8edf5;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        .feature-card i {
            font-size: 2rem;
            color: #ffb300;
            margin-bottom: 0.6rem;
        }
        .feature-card h4 {
            margin: 0.3rem 0 0.5rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fafdff;
            border-radius: 12px;
            overflow: hidden;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e0e7ef;
        }
        th {
            background: #0d1b3e;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f2f6fc;
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
            padding: 1.8rem;
            background: #f8faff;
            border-radius: 20px;
            border: 1px solid #e8edf5;
        }
        .feedback-section h3 {
            margin-top: 0;
        }
        .feedback-section form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-section input,
        .feedback-section textarea,
        .feedback-section select {
            padding: 0.7rem 1rem;
            border: 1px solid #d0d9e4;
            border-radius: 10px;
            font-family: inherit;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s;
        }
        .feedback-section input:focus,
        .feedback-section textarea:focus,
        .feedback-section select:focus {
            border-color: #1a237e;
            outline: none;
        }
        .feedback-section textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-section .btn {
            background: #1a237e;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .feedback-section .btn:hover {
            background: #0d1b3e;
        }
        .score-group {
            display: flex;
            gap: 0.8rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .score-group select {
            flex: 1;
            min-width: 100px;
        }
        @media (max-width: 720px) {
            .feedback-section {
                grid-template-columns: 1fr;
                padding: 1.2rem;
            }
        }
        .site-footer {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #e8edf3;
            font-size: 0.9rem;
            color: #546e7a;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        .site-footer friend-link {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.5rem;
            font-weight: 500;
        }
        .site-footer friend-link a {
            color: #1a237e;
        }
        .site-footer friend-link a:hover {
            color: #ffb300;
            text-decoration: none;
        }
        .copyright {
            width: 100%;
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1rem;
            border-top: 1px solid #e8edf3;
            font-size: 0.82rem;
            color: #78909c;
        }
        .last-updated {
            display: inline-block;
            background: #e8edf5;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #455a64;
            margin-bottom: 1rem;
        }
        .img-hero {
            border-radius: 16px;
            margin: 1.8rem 0;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .badge {
            display: inline-block;
            background: #ffb300;
            color: #0d1b3e;
            font-weight: 700;
            padding: 0.15rem 0.8rem;
            border-radius: 40px;
            font-size: 0.75rem;
            letter-spacing: 0.3px;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e8eaf6, #f5f7ff);
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.8rem 0;
            border-left: 6px solid #1a237e;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }
        .text-small {
            font-size: 0.85rem;
            color: #607d8b;
        }
        .flex-between {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .schema-hidden {
            display: none;
        }