*,
        *::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: #f5f7fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #1d6f9c;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #c44536;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #0f1a2e;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            border-bottom: 4px solid #e0a800;
            display: inline-block;
            padding-bottom: 0.25rem;
        }
        h2 {
            font-size: 1.6rem;
            border-left: 5px solid #e0a800;
            padding-left: 0.8rem;
            margin-top: 2.4rem;
        }
        h3 {
            font-size: 1.25rem;
            color: #1d3b5c;
        }
        h4 {
            font-size: 1.05rem;
            color: #2a4a6a;
        }
        p {
            margin: 0.9rem 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .badge {
            display: inline-block;
            background: #e0a800;
            color: #0f1a2e;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1c2e 0%, #1a3a5c 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .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: 900;
            color: #f7d44a;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            font-size: 2rem;
            color: #f7d44a;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #b0c7df;
            display: block;
            line-height: 1;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .main-nav {
            display: flex;
            gap: 0.3rem 1.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e8edf3;
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: rgba(247, 212, 74, 0.18);
            color: #f7d44a;
            text-decoration: none;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: #f7d44a;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            transition: transform 0.2s;
        }
        .hamburger-btn:active {
            transform: scale(0.92);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e9edf4;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0dae8;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #6f7d95;
        }
        .breadcrumb a {
            color: #1d6f9c;
        }
        .breadcrumb .current {
            color: #2a4a6a;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #f0f4fe, #e2e9f5);
            border-radius: 20px;
            padding: 2rem 2rem 1.8rem;
            margin: 1.5rem 0 2rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .hero p {
            font-size: 1.1rem;
            color: #1e3349;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
            background: #fafcff;
            border-radius: 16px;
            padding: 1.5rem 1.2rem;
            border: 1px solid #dce3ef;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
        }
        .sidebar h3 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #e0a800;
            padding-bottom: 0.4rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #eef2f8;
        }
        .sidebar li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            margin: 1.8rem 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf6;
        }
        .card-highlight {
            border-left: 6px solid #e0a800;
        }
        .feature-image {
            margin: 1.8rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
        }
        .feature-image img {
            width: 100%;
            object-fit: cover;
            max-height: 460px;
        }
        .feature-image figcaption {
            padding: 0.6rem 1rem;
            background: #f0f4fe;
            font-size: 0.85rem;
            color: #2a4a6a;
            font-style: italic;
        }
        .form-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            margin: 1.8rem 0;
            border: 1px solid #dce3ef;
        }
        .form-card label {
            display: block;
            font-weight: 600;
            margin: 0.8rem 0 0.3rem;
            color: #0f1a2e;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #c8d2e3;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s, box-shadow 0.2s;
            background: #f9fbfe;
        }
        .form-card input:focus,
        .form-card textarea:focus {
            border-color: #e0a800;
            outline: none;
            box-shadow: 0 0 0 3px rgba(224, 168, 0, 0.15);
        }
        .form-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-card .btn {
            background: #1a3a5c;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            margin-top: 0.8rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .form-card .btn:hover {
            background: #e0a800;
            color: #0f1a2e;
            transform: translateY(-2px);
        }
        .form-card .btn:active {
            transform: translateY(0);
        }
        .rating-stars {
            display: flex;
            gap: 0.4rem;
            font-size: 1.6rem;
            color: #d0d8e5;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            transition: color 0.15s, transform 0.15s;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #e0a800;
            transform: scale(1.05);
        }
        .comment-item {
            padding: 1rem 0;
            border-bottom: 1px solid #eef2f8;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-author {
            font-weight: 700;
            color: #0f1a2e;
        }
        .comment-date {
            font-size: 0.8rem;
            color: #6f7d95;
            margin-left: 0.8rem;
        }
        .comment-body {
            margin-top: 0.3rem;
            color: #1e3349;
        }
        .site-footer {
            background: #0b1c2e;
            color: #b0c7df;
            padding: 2rem 0 1.2rem;
            margin-top: 3rem;
            border-top: 4px solid #e0a800;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.8rem;
        }
        .site-footer a {
            color: #b0c7df;
        }
        .site-footer a:hover {
            color: #f7d44a;
        }
        .site-footer .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid #1a3a5c;
            font-size: 0.85rem;
        }
        friend-link {
            display: block;
            margin: 0.8rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
                margin-top: 1.5rem;
            }
            .main-content {
                order: 1;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger-btn {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f2940;
                padding: 1rem 0.8rem;
                border-radius: 0 0 16px 16px;
                margin-top: 0.4rem;
                gap: 0.2rem;
            }
            #nav-toggle:checked~.main-nav {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .hero {
                padding: 1.4rem 1.2rem;
            }
            .card,
            .form-card {
                padding: 1.2rem 1rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .feature-image img {
                max-height: 260px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        .text-small {
            font-size: 0.85rem;
            color: #4f6580;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            align-items: center;
        }
        .highlight {
            background: linear-gradient(120deg, #f7e9b0 0%, #f7e9b0 60%, transparent 90%);
            padding: 0 0.3rem;
            font-weight: 600;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        hr {
            border: none;
            border-top: 2px dashed #dce3ef;
            margin: 2rem 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        th,
        td {
            padding: 0.6rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e0e6f0;
        }
        th {
            background: #e9edf4;
            font-weight: 700;
            color: #0f1a2e;
        }
        tr:hover td {
            background: #f5f8fe;
        }