*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f7f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6f00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.25;
            margin-top: 1.6em;
            margin-bottom: 0.5em;
            color: #0b1a2e;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.4em;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #ff6f00;
            padding-left: 16px;
        }
        h3 {
            font-size: 1.3rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.1rem;
            color: #2a4a6e;
        }
        p {
            margin-bottom: 1.2em;
        }
        ul,
        ol {
            margin: 0.6em 0 1.2em 1.8em;
        }
        li {
            margin-bottom: 0.4em;
        }
        strong {
            color: #0b1a2e;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2e 0%, #162b44 100%);
            color: #fff;
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            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;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ffb347, #ff6f00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(255, 111, 0, 0.25);
            display: inline-block;
        }
        .my-logo small {
            font-size: 0.65rem;
            -webkit-text-fill-color: #aac9ff;
            color: #aac9ff;
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .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, 0.08);
        }
        .main-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e0edff;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.92rem;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #ffb347;
            text-decoration: none;
        }
        .main-nav .active {
            background: rgba(255, 111, 0, 0.2);
            color: #ffb347;
        }
        .breadcrumb-wrap {
            background: #e9edf2;
            padding: 8px 0;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4px;
        }
        .breadcrumb-wrap a {
            color: #2a4a6e;
        }
        .breadcrumb-wrap span {
            color: #6a7a8e;
        }
        .breadcrumb-wrap .sep {
            margin: 0 4px;
            color: #99aabb;
        }
        .search-section {
            background: #fff;
            padding: 24px 0 16px;
            border-bottom: 1px solid #e0e6ed;
        }
        .search-form {
            display: flex;
            max-width: 580px;
            margin: 0 auto;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            border: 1px solid #d0d8e0;
            transition: box-shadow 0.3s;
        }
        .search-form:focus-within {
            box-shadow: 0 2px 20px rgba(255, 111, 0, 0.15);
            border-color: #ff6f00;
        }
        .search-form input[type="text"] {
            flex: 1;
            border: none;
            padding: 14px 20px;
            font-size: 1rem;
            outline: none;
            background: #fff;
            color: #1e1e2a;
        }
        .search-form button {
            background: #ff6f00;
            border: none;
            color: #fff;
            padding: 0 28px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
        }
        .search-form button:hover {
            background: #e05e00;
        }
        .main-content {
            padding: 30px 0 50px;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-body {
            background: #fff;
            border-radius: 16px;
            padding: 32px 36px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .article-body .last-updated {
            display: inline-block;
            background: #eef3f8;
            color: #3e5a76;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 16px;
        }
        .article-body figure {
            margin: 28px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 3px 18px rgba(0, 0, 0, 0.06);
        }
        .article-body figure img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #d0d8e0;
        }
        .article-body figure figcaption {
            padding: 12px 18px;
            background: #f4f7fb;
            font-size: 0.88rem;
            color: #3a4e66;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 22px 24px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf4;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            border-bottom: 2px solid #ff6f00;
            padding-bottom: 8px;
            margin-bottom: 14px;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-card ul li {
            margin-bottom: 6px;
        }
        .sidebar-card ul li a {
            display: block;
            padding: 6px 0;
            border-bottom: 1px dashed #e0e6ed;
            font-size: 0.92rem;
        }
        .sidebar-card ul li a:hover {
            border-bottom-color: #ff6f00;
        }
        .feedback-section {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 2px solid #e8edf4;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .comment-box,
        .rating-box {
            background: #f8fafc;
            border-radius: 14px;
            padding: 24px 28px;
            border: 1px solid #e4eaf0;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            font-size: 1.15rem;
            color: #0b1a2e;
        }
        .comment-box textarea,
        .comment-box input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #d0d8e0;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.95rem;
            margin-bottom: 12px;
            transition: border 0.2s;
            background: #fff;
        }
        .comment-box textarea:focus,
        .comment-box input:focus {
            border-color: #ff6f00;
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 111, 0, 0.08);
        }
        .comment-box textarea {
            min-height: 80px;
            resize: vertical;
        }
        .comment-box button,
        .rating-box button {
            background: #ff6f00;
            color: #fff;
            border: none;
            padding: 12px 30px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #e05e00;
            transform: translateY(-1px);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d0d8e0;
            margin: 10px 0 16px;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars i {
            transition: color 0.15s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #ffb347;
            transform: scale(1.08);
        }
        .rating-box .score-value {
            font-size: 0.95rem;
            color: #3a5a76;
            margin-bottom: 8px;
        }
        .site-footer {
            background: #0b1a2e;
            color: #c0d0e0;
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: #ffb347;
            margin-top: 0;
            font-size: 1.05rem;
            border-bottom: 1px solid #1e3a5f;
            padding-bottom: 8px;
        }
        .footer-inner a {
            color: #aac9ff;
        }
        .footer-inner a:hover {
            color: #ffb347;
        }
        .footer-inner ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-inner ul li {
            margin-bottom: 6px;
        }
        friend-link {
            display: block;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #1e3a5f;
            font-size: 0.92rem;
            grid-column: 1 / -1;
        }
        friend-link a {
            display: inline-block;
            margin: 0 12px 6px 0;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            font-size: 0.85rem;
            color: #7a8ea0;
            padding-top: 20px;
            border-top: 1px solid #1a2e46;
            margin-top: 10px;
        }
        @media (max-width: 992px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b1a2e;
                padding: 12px 0 16px;
                border-top: 1px solid #1e3a5f;
                margin-top: 12px;
                gap: 2px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 20px;
                border-radius: 0;
                width: 100%;
            }
            .header-inner {
                position: relative;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .article-body {
                padding: 20px 18px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .search-form {
                flex-direction: column;
                border-radius: 16px;
            }
            .search-form input[type="text"] {
                border-radius: 0;
                padding: 12px 16px;
            }
            .search-form button {
                border-radius: 0;
                justify-content: center;
                padding: 12px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body {
                padding: 16px 12px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .sidebar-card {
                padding: 16px;
            }
        }
        .schema-hidden {
            display: none;
        }