*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b35;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
            padding: 20px 28px 32px;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0 16px;
            border-bottom: 2px solid #eef0f5;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #0a2a44, #1e4d7a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #ff6b35;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            z-index: 100;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #1a1a2e;
            border-radius: 3px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
            transition: max-height 0.4s ease;
        }
        .main-nav a {
            font-weight: 500;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            font-size: 0.95rem;
            color: #1a1a2e;
        }
        .main-nav a:hover {
            border-bottom-color: #ff6b35;
            color: #ff6b35;
            text-decoration: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 12px 0 8px;
            font-size: 0.85rem;
            color: #5a6a7a;
            width: 100%;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 10px;
            color: #b0b8c4;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #5a6a7a;
        }
        .breadcrumb a:hover {
            color: #ff6b35;
        }
        .breadcrumb .current {
            color: #1a1a2e;
            font-weight: 600;
        }
        .search-section {
            background: linear-gradient(135deg, #f0f4fe, #e6ecf7);
            border-radius: 16px;
            padding: 24px 28px;
            margin: 20px 0 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            justify-content: space-between;
        }
        .search-section label {
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #d0d8e4;
            border-radius: 50px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .search-form input:focus {
            border-color: #ff6b35;
        }
        .search-form button {
            background: #1e4d7a;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #ff6b35;
        }
        .content {
            padding: 8px 0 24px;
        }
        .content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 12px;
            color: #0a2a44;
        }
        .content h1 i {
            color: #ff6b35;
            margin-right: 8px;
        }
        .content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #eef0f5;
            color: #0a2a44;
        }
        .content h2 i {
            color: #ff6b35;
            margin-right: 10px;
        }
        .content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: #1a3a5a;
        }
        .content h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: #2a4a6a;
        }
        .content p {
            margin: 0 0 16px;
            font-size: 1.02rem;
            color: #2c2c3e;
        }
        .content ul,
        .content ol {
            margin: 0 0 20px 24px;
        }
        .content li {
            margin-bottom: 6px;
            font-size: 1.02rem;
        }
        .content .feature-box {
            background: #f8faff;
            border-left: 4px solid #ff6b35;
            padding: 18px 22px;
            border-radius: 8px;
            margin: 20px 0;
        }
        .content .feature-box i {
            color: #ff6b35;
            margin-right: 8px;
        }
        .content .highlight {
            background: #fff7e6;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .content .stat-badge {
            display: inline-block;
            background: #1e4d7a;
            color: #fff;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 6px;
        }
        .content .emoji-big {
            font-size: 1.6rem;
            margin-right: 4px;
        }
        .content-figure {
            margin: 28px 0;
            text-align: center;
        }
        .content-figure img {
            width: 100%;
            max-width: 820px;
            margin: 0 auto;
            border-radius: 16px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .content-figure figcaption {
            font-size: 0.85rem;
            color: #5a6a7a;
            margin-top: 10px;
            font-style: italic;
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #eef3fa;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #2a4a6a;
            margin-bottom: 18px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 28px;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #0a2a44;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #eef0f5;
        }
        .data-table tr:nth-child(even) {
            background: #f8faff;
        }
        .data-table tr:hover {
            background: #fff3e6;
        }
        .user-feedback {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0 20px;
            padding: 28px 0;
            border-top: 2px solid #eef0f5;
        }
        .feedback-card {
            background: #f8faff;
            border-radius: 16px;
            padding: 24px 28px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .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: 12px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea {
            padding: 10px 14px;
            border: 2px solid #d0d8e4;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: #ff6b35;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: #1e4d7a;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #ff6b35;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d0d8e4;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #ffb347;
        }
        friend-link {
            display: block;
            padding: 20px 0 12px;
            border-top: 2px solid #eef0f5;
            margin-top: 20px;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: #0a2a44;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 16px 4px 0;
            padding: 4px 0;
            font-weight: 500;
        }
        .site-footer {
            padding: 20px 0 4px;
            text-align: center;
            font-size: 0.9rem;
            color: #5a6a7a;
            border-top: 1px solid #eef0f5;
            margin-top: 12px;
        }
        .site-footer .copyright {
            font-weight: 500;
            color: #1a1a2e;
        }
        @media (max-width: 768px) {
            .container {
                padding: 12px 16px 20px;
            }
            .site-header {
                padding: 8px 0 12px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo i {
                font-size: 1.5rem;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                max-height: 0;
                overflow: hidden;
                flex-direction: column;
                width: 100%;
                gap: 0;
                background: #fff;
                border-radius: 12px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
                padding: 0 12px;
            }
            .main-nav.open {
                max-height: 500px;
                padding: 12px 12px 18px;
            }
            .main-nav a {
                padding: 10px 4px;
                border-bottom: 1px solid #f0f2f6;
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 0 4px;
            }
            .content h1 {
                font-size: 1.6rem;
            }
            .content h2 {
                font-size: 1.3rem;
                margin-top: 28px;
            }
            .content h3 {
                font-size: 1.1rem;
            }
            .content h4 {
                font-size: 1rem;
            }
            .content p,
            .content li {
                font-size: 0.95rem;
            }
            .search-section {
                flex-direction: column;
                padding: 18px 16px;
            }
            .search-form {
                width: 100%;
            }
            .user-feedback {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 20px 0;
            }
            .feedback-card {
                padding: 18px 16px;
            }
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
            friend-link a {
                display: block;
                margin: 4px 0;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 8px 10px 16px;
            }
            .content h1 {
                font-size: 1.3rem;
            }
            .content h2 {
                font-size: 1.1rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
            .search-form button {
                padding: 10px 14px;
                font-size: 0.85rem;
            }
            .search-form input {
                padding: 10px 14px;
                font-size: 0.85rem;
            }
            .star-rating label {
                font-size: 1.4rem;
            }
        }
        .schema-hidden {
            display: none;
        }