*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fa;
            color: #1e2a3a;
            line-height: 1.8;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2a7f62;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #1e5f4a;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0d1b2a, #1b2f44);
            color: #fff;
            padding: 12px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f5d742, #f9a825);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(245, 215, 66, 0.15);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #b0c4d9;
            color: #b0c4d9;
            letter-spacing: 1px;
            font-weight: 400;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0edf5;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: rgba(255, 255, 255, 0.12);
            color: #f5d742;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .main-nav a.active {
            background: #f5d742;
            color: #0d1b2a;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #e9eef3;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce3ea;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #7f8c9b;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2a7f62;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        .page-content {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media(max-width:960px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0d1b2a;
            font-weight: 800;
            letter-spacing: -1px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #1b2f44;
            border-left: 5px solid #f5d742;
            padding-left: 18px;
            font-weight: 700;
        }
        .article-body h3 {
            font-size: 1.5rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #2a3f55;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.2rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #3a506b;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            color: #2c3e50;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 24px;
            padding-left: 28px;
            font-size: 1.05rem;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: #0d1b2a;
            font-weight: 700;
        }
        .article-body .highlight-box {
            background: #e8f0f8;
            border-radius: 16px;
            padding: 28px 32px;
            margin: 32px 0;
            border-left: 6px solid #f5d742;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .article-body .emoji-big {
            font-size: 1.8rem;
            display: inline-block;
            margin-right: 6px;
        }
        .featured-image {
            border-radius: 20px;
            overflow: hidden;
            margin: 32px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            background: #dce3ea;
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
            min-height: 260px;
            background: #7f8c9b;
        }
        .featured-image figcaption {
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #4a5b6b;
            background: #fff;
            font-style: italic;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 18px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 28px;
            border: 1px solid #e9eef3;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: #0d1b2a;
            border-bottom: 2px solid #f5d742;
            padding-bottom: 8px;
            font-weight: 700;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
        }
        .sidebar-link-list li {
            margin-bottom: 10px;
            padding: 6px 0;
            border-bottom: 1px solid #f0f4f8;
        }
        .sidebar-link-list li:last-child {
            border-bottom: none;
        }
        .sidebar-link-list a {
            font-size: 0.95rem;
            display: block;
            padding: 4px 0;
            font-weight: 500;
        }
        .sidebar-link-list a:hover {
            padding-left: 6px;
        }
        .search-form {
            display: flex;
            background: #f4f7fa;
            border-radius: 50px;
            overflow: hidden;
            border: 1px solid #dce3ea;
            transition: border 0.2s;
        }
        .search-form:focus-within {
            border-color: #f5d742;
            box-shadow: 0 0 0 3px rgba(245, 215, 66, 0.15);
        }
        .search-form input {
            flex: 1;
            border: none;
            padding: 12px 20px;
            font-size: 1rem;
            background: transparent;
            outline: none;
            font-family: inherit;
        }
        .search-form button {
            background: #f5d742;
            border: none;
            padding: 0 22px;
            cursor: pointer;
            font-size: 1.1rem;
            color: #0d1b2a;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #e6c83a;
        }
        .user-feedback {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0 20px;
        }
        @media(max-width:700px) {
            .user-feedback {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: 18px;
            padding: 28px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #e9eef3;
        }
        .feedback-card h3 {
            font-size: 1.3rem;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #0d1b2a;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border-radius: 12px;
            border: 1px solid #dce3ea;
            font-size: 1rem;
            font-family: inherit;
            background: #fafcfe;
            transition: border 0.2s;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #f5d742;
            outline: none;
            box-shadow: 0 0 0 3px rgba(245, 215, 66, 0.1);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #2a7f62;
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: #1e5f4a;
            transform: translateY(-2px);
        }
        .feedback-card .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #dce3ea;
            cursor: pointer;
            direction: rtl;
        }
        .feedback-card .star-rating input {
            display: none;
        }
        .feedback-card .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
            color: #dce3ea;
        }
        .feedback-card .star-rating input:checked~label,
        .feedback-card .star-rating label:hover,
        .feedback-card .star-rating label:hover~label {
            color: #f5d742;
        }
        .site-footer {
            background: #0d1b2a;
            color: #b0c4d9;
            padding: 48px 0 28px;
            margin-top: 40px;
            border-top: 4px solid #f5d742;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media(max-width:760px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand h3 {
            color: #f5d742;
            font-size: 1.4rem;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 0.95rem;
            max-width: 360px;
        }
        .footer-links h4 {
            color: #fff;
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #b0c4d9;
            font-size: 0.95rem;
        }
        .footer-links a:hover {
            color: #f5d742;
        }
        .footer-bottom {
            grid-column: 1 / -1;
            border-top: 1px solid #1e3347;
            padding-top: 22px;
            margin-top: 12px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.9rem;
        }
        .footer-bottom a {
            color: #b0c4d9;
        }
        .footer-bottom a:hover {
            color: #f5d742;
        }
        friend-link {
            display: block;
            padding: 12px 0;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            padding: 0;
        }
        friend-link a {
            color: #b0c4d9;
            font-size: 0.95rem;
        }
        friend-link a:hover {
            color: #f5d742;
        }
        @media(max-width:800px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 16px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                text-align: center;
                padding: 12px;
                border-radius: 12px;
            }
            .article-body h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .feedback-card {
                padding: 18px;
            }
            .sidebar-card {
                padding: 16px;
            }
        }
        .last-updated {
            display: inline-block;
            background: #e9eef3;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #4a5b6b;
            margin-bottom: 20px;
        }
        .text-muted {
            color: #5a6b7a;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }
        .anchor-offset {
            scroll-margin-top: 90px;
        }