*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.8;
            color: #1a1a2e;
            background: #f8f9fc;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #1e3a5f;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover {
            color: #e67e22;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.6em;
            margin-bottom: 0.5em;
            color: #0d1b2a;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.2em;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #e67e22;
            padding-left: 0.9rem;
        }
        h3 {
            font-size: 1.3rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        header {
            background: linear-gradient(135deg, #0d1b2a 0%, #1b3a5c 100%);
            padding: 0.8rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #f1c40f;
            text-shadow: 2px 2px 0 #e67e22;
            letter-spacing: -0.5px;
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.03);
            color: #f1c40f;
        }
        .my-logo span {
            color: #fff;
            text-shadow: none;
            font-weight: 300;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            color: #bbb;
            font-weight: 400;
            letter-spacing: 0.5px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav.main-nav ul {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            padding: 0;
            margin: 0;
            align-items: center;
        }
        nav.main-nav ul li a {
            color: #e0e0e0;
            padding: 0.5rem 0.9rem;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            display: block;
        }
        nav.main-nav ul li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f1c40f;
        }
        nav.main-nav ul li a i {
            margin-right: 0.4rem;
        }
        .breadcrumb {
            background: #eaeef5;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.1rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb ol li {
            color: #2c3e50;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #888;
        }
        .breadcrumb ol li a {
            color: #1e3a5f;
            border-bottom: 1px solid transparent;
        }
        .breadcrumb ol li a:hover {
            border-bottom-color: #1e3a5f;
        }
        .hero {
            background: linear-gradient(145deg, #1b2a4a, #162238);
            color: #f0f4fa;
            padding: 2.8rem 0 2.4rem;
            margin-bottom: 2rem;
            border-bottom: 4px solid #e67e22;
        }
        .hero h1 {
            color: #f1c40f;
            font-size: 2.6rem;
            margin: 0 0 0.6rem;
            text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
        }
        .hero p {
            font-size: 1.2rem;
            opacity: 0.92;
            max-width: 780px;
            margin-bottom: 0.3rem;
        }
        .hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.95rem;
            color: #b0c4de;
            margin-top: 1rem;
        }
        .hero .meta-line i {
            margin-right: 0.4rem;
            color: #e67e22;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 860px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
        }
        .sidebar {
            position: sticky;
            top: 6rem;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e8ecf2;
        }
        .sidebar-card h3 {
            margin-top: 0;
            font-size: 1.15rem;
            border-bottom: 2px solid #e67e22;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 500;
        }
        .sidebar-card ul li a i {
            color: #e67e22;
            width: 1.2rem;
            text-align: center;
        }
        .sidebar-card ul li a:hover {
            padding-left: 0.3rem;
        }
        article {
            background: #fff;
            border-radius: 16px;
            padding: 2.2rem 2.5rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef2f7;
        }
        @media (max-width: 600px) {
            article {
                padding: 1.4rem 1.2rem;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            nav.main-nav {
                display: none;
                width: 100%;
                margin-top: 0.8rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                padding-top: 0.6rem;
            }
            nav.main-nav.open {
                display: block;
            }
            nav.main-nav ul {
                flex-direction: column;
                gap: 0.1rem;
            }
            nav.main-nav ul li a {
                padding: 0.6rem 0.8rem;
                border-radius: 4px;
            }
        }
        .featured-img {
            margin: 1.8rem 0 2.2rem;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
            background: #eef2f7;
        }
        .featured-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #555;
            background: #f5f7fa;
            border-top: 1px solid #e0e6ed;
        }
        .form-card {
            background: #f0f4fe;
            border-radius: 14px;
            padding: 1.8rem 2rem;
            margin: 2.2rem 0;
            border: 1px solid #dce3ef;
        }
        .form-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #d0d9e6;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #1e3a5f;
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #1e3a5f;
            color: #fff;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn:hover {
            background: #2c4e7a;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: #e67e22;
        }
        .btn-secondary:hover {
            background: #cf6d17;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 2rem;
        }
        .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: #f1c40f;
        }
        .comment-item {
            border-bottom: 1px solid #e8ecf2;
            padding: 1.2rem 0;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-item strong {
            color: #1e3a5f;
        }
        .comment-item .date {
            font-size: 0.85rem;
            color: #888;
            margin-left: 0.8rem;
        }
        .comment-item p {
            margin: 0.3rem 0 0;
        }
        footer {
            background: #0d1b2a;
            color: #c8d6e5;
            padding: 2.8rem 0 1.8rem;
            margin-top: 3rem;
            border-top: 4px solid #e67e22;
        }
        footer a {
            color: #a8c4e0;
        }
        footer a:hover {
            color: #f1c40f;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (max-width: 700px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        footer h4 {
            color: #f1c40f;
            margin-top: 0;
            font-size: 1.1rem;
        }
        footer .copyright {
            border-top: 1px solid #2a3f5a;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.9rem;
            color: #8aa0b8;
        }
        friend-link {
            display: block;
            margin: 0.8rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
            padding: 0.2rem 0.8rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f1c40f;
        }
        .highlight {
            background: #fff9e6;
            padding: 0.2rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
        }
        .text-accent {
            color: #e67e22;
        }
        .text-muted {
            color: #6c7a8a;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .gap-1 {
            gap: 1rem;
        }
        .badge {
            display: inline-block;
            background: #e67e22;
            color: #fff;
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th {
            background: #1e3a5f;
            color: #fff;
            padding: 0.6rem 1rem;
            text-align: left;
        }
        table td {
            padding: 0.5rem 1rem;
            border-bottom: 1px solid #e0e6ed;
        }
        table tr:nth-child(even) {
            background: #f8f9fc;
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .form-card {
                padding: 1.2rem 1rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (min-width: 601px) {
            .nav-toggle {
                display: none !important;
            }
            nav.main-nav {
                display: block !important;
            }
        }