*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f5f7fc;
            color: #1a1e2b;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0b1a33;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0f2248;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid #e43d2c;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1a2d5a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2a3f6a;
            margin-top: 1.4rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.02rem;
        }
        a {
            color: #c9341f;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
            border-bottom: 1px solid transparent;
        }
        a:hover,
        a:focus-visible {
            color: #0b1a33;
            border-bottom-color: #0b1a33;
        }
        strong {
            font-weight: 700;
            color: #0b1a33;
        }
        .highlight {
            background: #fff1e0;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .emoji-big {
            font-size: 1.3em;
            margin-right: 0.15em;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background: linear-gradient(135deg, #0b1a33 0%, #162d5a 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(11, 26, 51, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            color: #fff;
            border: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            color: #f5c518;
            border: none;
        }
        .my-logo i {
            color: #f5c518;
            font-size: 1.6rem;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.9rem;
            opacity: 0.7;
            display: none;
        }
        @media (min-width:500px) {
            .my-logo span {
                display: inline;
            }
        }
        nav {
            display: flex;
            align-items: center;
            gap: 0.4rem 1.2rem;
            flex-wrap: wrap;
        }
        nav a {
            color: #e8edf5;
            font-weight: 500;
            font-size: 0.95rem;
            border: none;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover,
        nav a:focus-visible {
            background: rgba(255, 255, 255, 0.12);
            color: #f5c518;
            border: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
        }
        .nav-menu {
            display: flex;
            gap: 0.4rem 1.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        @media (max-width:700px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 0.8rem 0 0.4rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 0.5rem 0.6rem;
            }
        }
        .breadcrumb {
            background: #eef1f7;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce1ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7a8aa5;
        }
        .breadcrumb a {
            color: #2a4a7a;
            border: none;
        }
        .breadcrumb a:hover {
            color: #c9341f;
        }
        .breadcrumb .current {
            color: #4a5a7a;
            font-weight: 500;
        }
        main {
            padding: 2.2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }
        @media (min-width:860px) {
            .content-grid {
                grid-template-columns: 1fr 300px;
            }
        }
        article {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        @media (max-width:500px) {
            article {
                padding: 1.2rem 1rem;
            }
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.4rem 1.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef1f7;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            border-left: 3px solid #e43d2c;
            padding-left: 0.7rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.5rem;
        }
        .sidebar-card li a {
            border: none;
            font-weight: 500;
            display: block;
            padding: 0.3rem 0;
            border-bottom: 1px solid #f0f2f7;
        }
        .sidebar-card li a:hover {
            color: #c9341f;
            border-bottom-color: #c9341f;
        }
        .feature-img {
            width: 100%;
            border-radius: 16px;
            margin: 1.5rem 0 1.8rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.07);
            display: block;
            max-width: 100%;
            height: auto;
        }
        .search-box {
            display: flex;
            max-width: 520px;
            margin: 1.2rem 0 1.8rem;
            border-radius: 50px;
            overflow: hidden;
            border: 1px solid #d0d7e6;
            background: #fff;
            transition: box-shadow 0.2s;
        }
        .search-box:focus-within {
            box-shadow: 0 0 0 3px rgba(196, 52, 31, 0.2);
            border-color: #c9341f;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 0.8rem 1.2rem;
            font-size: 1rem;
            background: transparent;
            outline: none;
            font-family: inherit;
        }
        .search-box button {
            background: #c9341f;
            color: #fff;
            border: none;
            padding: 0.8rem 1.6rem;
            font-size: 1rem;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.2s;
            font-family: inherit;
        }
        .search-box button:hover {
            background: #0b1a33;
        }
        .comment-section,
        .rating-section {
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 2px solid #eef1f7;
        }
        .comment-section h3,
        .rating-section h3 {
            margin-top: 0;
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
        }
        .comment-form input,
        .comment-form textarea,
        .rating-form select,
        .rating-form button {
            padding: 0.75rem 1rem;
            border: 1px solid #d0d7e6;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            background: #fff;
            transition: border-color 0.2s;
        }
        .comment-form input:focus,
        .comment-form textarea:focus,
        .rating-form select:focus {
            border-color: #c9341f;
            outline: none;
            box-shadow: 0 0 0 3px rgba(196, 52, 31, 0.1);
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form button,
        .rating-form button {
            background: #c9341f;
            color: #fff;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            max-width: 200px;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #0b1a33;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ffb83b;
        }
        .rating-stars i {
            cursor: pointer;
            transition: transform 0.15s, color 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.3);
            color: #ff9500;
        }
        footer {
            background: #0b1a33;
            color: #c8d2e3;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        footer .container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width:600px) {
            footer .container {
                grid-template-columns: 2fr 1fr;
            }
        }
        footer a {
            color: #b0c4e0;
            border: none;
        }
        footer a:hover {
            color: #f5c518;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            padding: 1.2rem 1.5rem;
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link h4 {
            color: #f5c518;
            margin: 0 0 0.6rem;
            font-size: 1.1rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.2rem;
        }
        friend-link li a {
            font-size: 0.95rem;
            padding: 0.2rem 0;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #8899b5;
            grid-column: 1 / -1;
        }
        .last-updated {
            display: inline-block;
            background: #eef1f7;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #4a5a7a;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #c9341f;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 6px 20px rgba(201, 52, 31, 0.3);
            border: none;
            cursor: pointer;
            z-index: 50;
            transition: transform 0.2s, opacity 0.3s;
            opacity: 0;
            pointer-events: none;
        }
        .btn-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .btn-top:hover {
            transform: scale(1.08);
        }
        @media (max-width:400px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 1rem;
            }
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0 1.8rem;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
        }
        .data-table th {
            background: #0b1a33;
            color: #fff;
            padding: 0.7rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #eef1f7;
            background: #fafbfd;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        blockquote {
            background: #f2f5fb;
            border-left: 4px solid #c9341f;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2a3f5a;
        }
        blockquote cite {
            display: block;
            margin-top: 0.5rem;
            font-style: normal;
            font-weight: 600;
            font-size: 0.9rem;
            color: #0b1a33;
        }
        @media (max-width:600px) {
            .data-table {
                font-size: 0.85rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.5rem 0.6rem;
            }
            blockquote {
                padding: 0.8rem 1rem;
            }
        }