* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fc;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #0057a3;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #e85d04;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(145deg, #0b1a2e, #1a3a5c);
            color: #fff;
            padding: 18px 0 12px;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            transition: opacity 0.3s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo span {
            color: #fcca46;
            font-weight: 300;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.25s;
        }
        .hamburger:hover {
            border-color: #fcca46;
            color: #fcca46;
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 22px;
            list-style: none;
            align-items: center;
            transition: all 0.3s ease;
        }
        .nav-menu li a {
            color: #eef4ff;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-menu li a:hover {
            border-bottom-color: #fcca46;
            color: #fcca46;
            text-decoration: none;
        }
        .nav-menu li a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        @media (max-width: 820px) {
            .hamburger {
                display: inline-block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 18px;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 10px 16px;
                border-radius: 8px;
                background: rgba(255, 255, 255, 0.06);
            }
            .nav-menu li a:hover {
                background: rgba(255, 255, 255, 0.15);
                border-bottom-color: transparent;
            }
        }
        .breadcrumb {
            background: #e9edf4;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d7e2;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #6c7a8d;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #1a3a5c;
        }
        .breadcrumb .current {
            color: #6c7a8d;
            font-weight: 500;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media (max-width: 920px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 12px;
            color: #0b1a2e;
            letter-spacing: -0.02em;
        }
        .article-body h1 i {
            color: #e85d04;
            margin-right: 10px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 4px solid #fcca46;
            color: #0b1a2e;
            letter-spacing: -0.01em;
        }
        .article-body h2 i {
            color: #0057a3;
            margin-right: 10px;
        }
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #1a3a5c;
        }
        .article-body h3 i {
            color: #e85d04;
            margin-right: 8px;
            font-size: 1.2rem;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: #2d4a6b;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2c3e50;
        }
        .article-body p b,
        .article-body p strong {
            color: #0b1a2e;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 22px 26px;
            font-size: 1.05rem;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 5px solid #0057a3;
            background: #eef4ff;
            padding: 18px 24px;
            margin: 28px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1a3a5c;
            font-weight: 450;
        }
        .article-body .feature-img {
            margin: 32px 0;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #e9edf4;
            padding: 6px 16px 6px 12px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #2d4a6b;
            margin-bottom: 20px;
        }
        .update-badge i {
            color: #0057a3;
        }
        .sidebar {
            background: #ffffff;
            border-radius: 20px;
            padding: 28px 22px;
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.05);
            border: 1px solid #e6ebf2;
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0b1a2e;
            border-left: 4px solid #fcca46;
            padding-left: 14px;
        }
        .sidebar ul {
            list-style: none;
            margin: 0;
        }
        .sidebar ul li {
            padding: 10px 0;
            border-bottom: 1px solid #edf0f5;
        }
        .sidebar ul li:last-child {
            border-bottom: none;
        }
        .sidebar ul li a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar ul li a i {
            color: #e85d04;
            font-size: 0.85rem;
        }
        .search-box {
            background: #fff;
            border-radius: 60px;
            display: flex;
            overflow: hidden;
            border: 2px solid #d0d7e2;
            transition: 0.3s;
            margin-bottom: 28px;
        }
        .search-box:focus-within {
            border-color: #0057a3;
            box-shadow: 0 0 0 4px rgba(0, 87, 163, 0.12);
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 14px 20px;
            font-size: 1rem;
            background: transparent;
            outline: none;
            font-family: inherit;
        }
        .search-box button {
            background: #0057a3;
            color: #fff;
            border: none;
            padding: 0 28px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #0b1a2e;
        }
        .feedback-section {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 2px dashed #d0d7e2;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 20px;
        }
        @media (max-width: 700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .card-form {
            background: #fff;
            border-radius: 18px;
            padding: 26px 24px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
            border: 1px solid #e6ebf2;
        }
        .card-form h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-form h3 i {
            color: #fcca46;
        }
        .card-form label {
            font-weight: 600;
            font-size: 0.9rem;
            display: block;
            margin: 12px 0 4px;
            color: #1a3a5c;
        }
        .card-form input,
        .card-form textarea,
        .card-form select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce2ec;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: 0.25s;
            background: #fafcff;
        }
        .card-form input:focus,
        .card-form textarea:focus,
        .card-form select:focus {
            border-color: #0057a3;
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 87, 163, 0.1);
        }
        .card-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .card-form .star-select {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            margin: 6px 0 10px;
            direction: rtl;
        }
        .card-form .star-select input {
            display: none;
        }
        .card-form .star-select label {
            cursor: pointer;
            color: #d0d7e2;
            transition: 0.2s;
            font-size: 1.8rem;
            margin: 0;
            line-height: 1;
        }
        .card-form .star-select label:hover,
        .card-form .star-select label:hover~label,
        .card-form .star-select input:checked~label {
            color: #fcca46;
        }
        .card-form .btn-submit {
            background: #0057a3;
            color: #fff;
            border: none;
            padding: 14px 28px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            margin-top: 14px;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        .card-form .btn-submit:hover {
            background: #0b1a2e;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
        }
        footer {
            background: #0b1a2e;
            color: #cbd5e1;
            padding: 40px 0 28px;
            margin-top: 60px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 720px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        footer h4 {
            color: #fcca46;
            font-size: 1.1rem;
            margin-bottom: 12px;
            font-weight: 600;
        }
        footer a {
            color: #b0c4de;
        }
        footer a:hover {
            color: #fcca46;
        }
        footer .copy {
            text-align: center;
            border-top: 1px solid #1f3a56;
            padding-top: 24px;
            margin-top: 30px;
            font-size: 0.9rem;
            color: #8ea3bb;
        }
        friend-link {
            display: block;
            background: #13273f;
            padding: 18px 22px;
            border-radius: 14px;
            margin: 20px 0 10px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 14px 4px 0;
            padding: 4px 0;
        }
        friend-link a i {
            margin-right: 6px;
            font-size: 0.8rem;
            color: #fcca46;
        }
        @media (max-width: 480px) {
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 14px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .eeat-author {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #eef4ff;
            padding: 16px 20px;
            border-radius: 16px;
            margin: 30px 0 10px;
            font-size: 0.95rem;
            border: 1px solid #dce2ec;
        }
        .eeat-author i {
            font-size: 2.2rem;
            color: #0057a3;
        }
        .eeat-author strong {
            color: #0b1a2e;
        }