*,
        *::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, 'Helvetica Neue', sans-serif;
            background: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #c8102e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus-visible {
            color: #a00d24;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid #c8102e;
            outline-offset: 2px;
            border-radius: 2px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.35rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0b1a2a;
            margin-top: 0;
        }
        h1 {
            font-size: 2.2rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.7rem;
            margin-top: 2.5rem;
            margin-bottom: 0.6rem;
            border-bottom: 3px solid #c8102e;
            padding-bottom: 0.3rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.3rem;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            color: #2c3e50;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2a 0%, #1a2f44 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5c518;
            text-shadow: 2px 2px 0 #c8102e;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #f5c518;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #fff;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #b0c4de;
            letter-spacing: 0;
            text-shadow: none;
            display: none;
        }
        @media (min-width: 600px) {
            .my-logo small {
                display: inline;
            }
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.3rem 0.7rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid #f5c518;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0e8f0;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: rgba(245, 197, 24, 0.2);
            color: #f5c518;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 0.3rem;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.4rem 0;
                gap: 0.1rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.4rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1rem;
                border-radius: 4px;
            }
        }
        .breadcrumb {
            background: #eef1f5;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            color: #4a5a6a;
            border-bottom: 1px solid #dce2ea;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem 0.1rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.4rem;
            color: #8a9aa8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2c5f8a;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        .main-content {
            padding: 1.8rem 0 2.5rem;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 992px) {
            .article-wrapper {
                grid-template-columns: 2fr 1fr;
            }
        }
        .article-body {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        @media (min-width: 600px) {
            .article-body {
                padding: 2.5rem 2.2rem;
            }
        }
        .last-updated {
            display: block;
            font-size: 0.85rem;
            color: #6a7a8a;
            margin-bottom: 1.2rem;
            border-left: 4px solid #c8102e;
            padding-left: 0.8rem;
            font-style: italic;
        }
        .last-updated i {
            margin-right: 0.4rem;
        }
        .featured-image {
            border-radius: 14px;
            overflow: hidden;
            margin: 1.5rem 0 2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
            max-height: 420px;
        }
        .featured-image figcaption {
            background: #f0f3f7;
            padding: 0.5rem 1rem;
            font-size: 0.8rem;
            color: #4a5a6a;
            text-align: center;
        }
        .article-body p {
            margin-bottom: 1.1rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
        }
        .highlight-box {
            background: #f0f6ff;
            border-left: 5px solid #c8102e;
            padding: 1rem 1.4rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .pro-tip {
            background: #fef8e7;
            border: 1px solid #f5d77b;
            border-radius: 12px;
            padding: 1rem 1.4rem;
            margin: 1.5rem 0;
        }
        .pro-tip strong {
            color: #b8860b;
        }
        .stat-card {
            display: inline-block;
            background: #0b1a2a;
            color: #f5c518;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            margin: 0.2rem 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.4rem 1.2rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            border-bottom: 2px solid #c8102e;
            padding-bottom: 0.3rem;
        }
        .link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .link-list li {
            margin-bottom: 0.5rem;
            padding: 0.3rem 0;
            border-bottom: 1px solid #edf0f4;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.92rem;
            color: #1e2a3a;
        }
        .link-list a:hover {
            color: #c8102e;
            text-decoration: none;
        }
        .link-list a i {
            color: #c8102e;
            font-size: 0.7rem;
            width: 1rem;
        }
        .search-form {
            display: flex;
            gap: 0.4rem;
            margin: 1.2rem 0 0.5rem;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #dce2ea;
            border-radius: 30px;
            font-size: 0.95rem;
            background: #f8f9fc;
            transition: border 0.2s;
            min-width: 0;
        }
        .search-form input[type="text"]:focus {
            border-color: #c8102e;
            outline: none;
            background: #fff;
        }
        .search-form button {
            background: #c8102e;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.6rem 1.4rem;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            white-space: nowrap;
        }
        .search-form button:hover {
            background: #a00d24;
        }
        .search-form button:active {
            transform: scale(0.97);
        }
        .search-form button i {
            margin-right: 0.3rem;
        }
        .feedback-section {
            background: #fff;
            border-radius: 14px;
            padding: 1.8rem 1.5rem;
            margin-top: 2rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.8rem;
        }
        @media (min-width: 600px) {
            .feedback-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #dce2ea;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            resize: vertical;
            min-height: 90px;
            background: #f8f9fc;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #c8102e;
            outline: none;
            background: #fff;
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #dce2ea;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #f8f9fc;
            margin-bottom: 0.6rem;
        }
        .comment-form input[type="text"]:focus {
            border-color: #c8102e;
            outline: none;
            background: #fff;
        }
        .comment-form .form-row {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 120px;
        }
        .btn-primary {
            background: #c8102e;
            color: #fff;
            border: none;
            padding: 0.6rem 1.8rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn-primary:hover {
            background: #a00d24;
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-primary i {
            margin-right: 0.4rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            margin: 0.6rem 0 1rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d0d5dd;
            cursor: pointer;
            transition: color 0.15s, transform 0.1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c518;
        }
        .star-rating label:hover {
            transform: scale(1.1);
        }
        .rating-display {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1rem;
            margin-top: 0.3rem;
        }
        .rating-display .stars-avg {
            color: #f5c518;
            font-size: 1.2rem;
            letter-spacing: 2px;
        }
        .rating-display .avg-num {
            font-weight: 700;
            font-size: 1.2rem;
            color: #0b1a2a;
        }
        friend-link {
            display: block;
            background: #1e2a3a;
            color: #e0e8f0;
            padding: 1.5rem 0;
            margin-top: 2.5rem;
        }
        friend-link .container {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 2rem;
            justify-content: center;
        }
        friend-link a {
            color: #b0c4de;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        friend-link a:hover {
            color: #f5c518;
            text-decoration: underline;
        }
        friend-link .fl-head {
            width: 100%;
            text-align: center;
            font-weight: 600;
            color: #f5c518;
            font-size: 1rem;
            margin-bottom: 0.2rem;
        }
        friend-link .fl-head i {
            margin-right: 0.5rem;
        }
        .site-footer {
            background: #0b1a2a;
            color: #b0c4de;
            padding: 1.8rem 0 1.2rem;
            font-size: 0.85rem;
            border-top: 3px solid #c8102e;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.8rem;
            text-align: center;
        }
        .site-footer .copyright {
            color: #8a9aa8;
            font-size: 0.8rem;
        }
        .site-footer .copyright i {
            margin: 0 0.3rem;
        }
        .site-footer a {
            color: #b0c4de;
        }
        .site-footer a:hover {
            color: #f5c518;
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .article-body {
                padding: 1.2rem 0.9rem;
            }
            .sidebar-card {
                padding: 1rem 0.9rem;
            }
            .feedback-section {
                padding: 1.2rem 0.9rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .stat-card {
                font-size: 0.8rem;
            }
        }
        @media (min-width: 769px) {
            .main-nav a {
                font-size: 0.95rem;
                padding: 0.5rem 1rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }
        :focus-visible {
            outline: 2px solid #c8102e;
            outline-offset: 2px;
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 1rem;
            background: #c8102e;
            color: #fff;
            padding: 0.5rem 1.2rem;
            border-radius: 0 0 8px 8px;
            z-index: 10000;
            font-weight: 600;
        }
        .skip-link:focus {
            top: 0;
        }
        .main-nav.open {
            display: flex;
        }
        @media (max-width: 768px) {
            .main-nav {
                transition: none;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-small {
            font-size: 0.85rem;
            color: #5a6a7a;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }