*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fb;
            color: #1e2a3e;
            line-height: 1.8;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #a93226;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f1a2e, #1a2a4a);
            color: #fff;
            padding: 18px 0;
            border-bottom: 4px solid #e67e22;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #f1c40f, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform 0.25s;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #bdc3c7;
            color: #bdc3c7;
            display: block;
            font-weight: 400;
            letter-spacing: 0.5px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 8px 18px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #ecf0f1;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 20px;
            transition: background 0.25s, color 0.25s;
        }
        .nav-menu a:hover,
        .nav-menu a:focus {
            background: rgba(230, 126, 34, 0.2);
            color: #f1c40f;
            text-decoration: none;
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce3ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #7f8c8d;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2c3e50;
        }
        .breadcrumb .active {
            color: #c0392b;
            font-weight: 600;
        }
        .main-wrap {
            padding: 40px 0 60px;
        }
        .post-header {
            margin-bottom: 40px;
        }
        .post-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0f1a2e;
            margin-bottom: 12px;
        }
        .post-header .meta {
            color: #5d6d7e;
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
        }
        .post-header .meta i {
            margin-right: 4px;
        }
        .post-header .last-updated {
            background: #e8edf4;
            padding: 4px 14px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.85rem;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 18px;
            color: #1a2a4a;
            border-left: 6px solid #e67e22;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 34px 0 14px;
            color: #2c3e50;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 24px 0 10px;
            color: #34495e;
        }
        p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2c3e50;
        }
        .feature-img {
            margin: 28px 0;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }
        .feature-img img {
            width: 100%;
            border-radius: 16px;
        }
        .feature-img figcaption {
            padding: 10px 16px;
            background: #eef2f7;
            font-size: 0.9rem;
            color: #5d6d7e;
            text-align: center;
            font-style: italic;
        }
        .highlight {
            background: #fef9e7;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 6px;
        }
        ul,
        ol {
            margin: 0 0 20px 28px;
        }
        li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        blockquote {
            background: #eef2f7;
            border-left: 6px solid #e67e22;
            padding: 20px 28px;
            margin: 30px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2c3e50;
        }
        blockquote cite {
            display: block;
            margin-top: 10px;
            font-style: normal;
            font-weight: 600;
            color: #c0392b;
        }
        .search-section {
            background: #ffffff;
            border-radius: 20px;
            padding: 30px 34px;
            margin: 50px 0 40px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf4;
        }
        .search-section h2 {
            margin-top: 0;
            border-left-color: #2980b9;
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 10px;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #dce3ec;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input[type="text"]:focus {
            border-color: #2980b9;
        }
        .search-form button {
            background: #2980b9;
            color: #fff;
            border: none;
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #1f6a9a;
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 50px 0 40px;
        }
        .comment-section,
        .rating-section {
            background: #ffffff;
            border-radius: 20px;
            padding: 28px 30px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf4;
        }
        .comment-section h2,
        .rating-section h2 {
            margin-top: 0;
            font-size: 1.5rem;
            border-left-color: #27ae60;
        }
        .rating-section h2 {
            border-left-color: #f39c12;
        }
        .comment-section textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #dce3ec;
            border-radius: 14px;
            font-size: 1rem;
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: border 0.3s;
            font-family: inherit;
        }
        .comment-section textarea:focus {
            border-color: #27ae60;
        }
        .comment-section input[type="text"] {
            width: 100%;
            padding: 12px 18px;
            border: 2px solid #dce3ec;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            margin: 10px 0 14px;
        }
        .comment-section input[type="text"]:focus {
            border-color: #27ae60;
        }
        .comment-section .btn-submit,
        .rating-section .btn-submit {
            background: #27ae60;
            color: #fff;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-section .btn-submit:hover {
            background: #1e8e4e;
            transform: scale(1.02);
        }
        .rating-section .btn-submit {
            background: #f39c12;
        }
        .rating-section .btn-submit:hover {
            background: #d68910;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 12px 0 18px;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #dce3ec;
            cursor: pointer;
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
            transform: scale(1.1);
        }
        friend-link {
            display: block;
            background: #1a2a4a;
            color: #ecf0f1;
            padding: 28px 20px;
            border-radius: 20px;
            margin: 40px 0 20px;
            text-align: center;
        }
        friend-link .fl-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #f1c40f;
            display: block;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px 22px;
            list-style: none;
            padding: 0;
        }
        friend-link .fl-list a {
            color: #ecf0f1;
            font-weight: 500;
            transition: color 0.25s;
        }
        friend-link .fl-list a:hover {
            color: #f1c40f;
            text-decoration: underline;
        }
        .site-footer {
            background: #0f1a2e;
            color: #bdc3c7;
            padding: 30px 0;
            text-align: center;
            border-top: 4px solid #e67e22;
            font-size: 0.95rem;
        }
        .site-footer .copyright {
            margin-top: 10px;
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        @media (max-width: 992px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .post-header h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0 8px;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 14px;
                border-radius: 10px;
                width: 100%;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            .post-header h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .container {
                padding: 0 14px;
            }
            .search-section {
                padding: 20px 18px;
            }
            .comment-section,
            .rating-section {
                padding: 20px 18px;
            }
            .search-form button {
                padding: 12px 22px;
            }
            .breadcrumb ol {
                gap: 4px 8px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .post-header h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.4rem;
                padding-left: 12px;
            }
            h3 {
                font-size: 1.15rem;
            }
            body {
                font-size: 0.95rem;
            }
            p {
                font-size: 0.98rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            .search-form input[type="text"] {
                min-width: 140px;
                padding: 10px 16px;
            }
            .search-form button {
                padding: 10px 18px;
                font-size: 0.9rem;
            }
        }
        .spacer-sm {
            height: 16px;
        }
        .spacer-md {
            height: 32px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid #eef2f7;
        }
        th {
            background: #1a2a4a;
            color: #f1c40f;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f8faff;
        }