*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a3a2a;
            --primary-light: #2d6a4f;
            --accent: #f9c74f;
            --accent-hover: #f5b820;
            --bg: #f4f1ea;
            --card-bg: #ffffff;
            --text: #1e1e1e;
            --text-light: #4a4a4a;
            --border: #d4cfc6;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --radius-sm: 6px;
            --font: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            --max-width: 1120px;
            --header-bg: #0f241b;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        header {
            background: var(--header-bg);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 16px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f9c74f, #f5b820);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #f9c74f;
            font-size: 1.8rem;
        }
        .my-logo a {
            color: inherit;
            -webkit-text-fill-color: inherit;
            background: none;
        }
        .my-logo a:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        nav a {
            color: #eee;
            padding: 8px 14px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        nav a:hover,
        nav a.active {
            background: var(--accent);
            color: #1a1a1a;
        }
        .nav-overlay {
            display: none;
        }
        .breadcrumb {
            background: #e8e3da;
            padding: 10px 20px;
            font-size: 0.88rem;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #888;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 500;
        }
        main {
            flex: 1;
            padding: 32px 0 48px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
        }
        article {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.2rem;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .last-updated {
            display: block;
            font-size: 0.85rem;
            color: #777;
            margin-bottom: 20px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 12px;
        }
        .last-updated i {
            margin-right: 6px;
        }
        h2 {
            font-size: 1.7rem;
            color: var(--primary);
            margin: 36px 0 14px;
            padding-bottom: 6px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        h3 {
            font-size: 1.25rem;
            color: var(--primary-light);
            margin: 28px 0 10px;
        }
        h4 {
            font-size: 1.05rem;
            color: #1f4a3a;
            margin: 20px 0 8px;
            font-weight: 600;
        }
        p {
            margin-bottom: 16px;
            font-size: 1rem;
            color: var(--text-light);
        }
        .feature-img {
            margin: 24px 0 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: #eae5dc;
            padding: 4px;
        }
        .feature-img img {
            border-radius: calc(var(--radius) - 4px);
            width: 100%;
        }
        .feature-img figcaption {
            font-size: 0.82rem;
            color: #666;
            text-align: center;
            padding: 8px 4px 2px;
        }
        .highlight-box {
            background: #f0f7f2;
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
        }
        .highlight-box strong {
            color: var(--primary);
        }
        ul,
        ol {
            margin: 12px 0 20px 24px;
            color: var(--text-light);
        }
        li {
            margin-bottom: 6px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 14px;
            margin: 20px 0;
        }
        .stat-card {
            background: #f4f8f5;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            text-align: center;
            border: 1px solid #dce8e0;
        }
        .stat-card .num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
        }
        .stat-card .label {
            font-size: 0.82rem;
            color: #666;
            display: block;
            margin-top: 2px;
        }
        .btn {
            display: inline-block;
            background: var(--accent);
            color: #1a1a1a;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: background 0.2s, transform 0.1s;
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
            color: #1a1a1a;
        }
        .btn-sm {
            padding: 4px 14px;
            font-size: 0.82rem;
        }
        .interact-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            margin-top: 24px;
        }
        .interact-section h2 {
            margin-top: 0;
            border-bottom: none;
            display: block;
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .interact-card {
            background: #faf8f5;
            padding: 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
        }
        .interact-card h3 {
            margin-top: 0;
            font-size: 1.1rem;
        }
        .interact-card form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .interact-card input,
        .interact-card textarea,
        .interact-card select {
            padding: 10px 14px;
            border: 1px solid #ccc;
            border-radius: var(--radius-sm);
            font-family: var(--font);
            font-size: 0.92rem;
            background: #fff;
            transition: border 0.2s;
            width: 100%;
        }
        .interact-card input:focus,
        .interact-card textarea:focus,
        .interact-card select:focus {
            border-color: var(--primary-light);
            outline: none;
            box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
        }
        .interact-card textarea {
            resize: vertical;
            min-height: 70px;
        }
        .interact-card .btn {
            align-self: flex-start;
        }
        .rating-stars {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            font-size: 1.4rem;
            color: #ccc;
            cursor: pointer;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            cursor: pointer;
            transition: color 0.15s;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #f9c74f;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .link-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
        }
        .link-card h3 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
            display: inline-block;
        }
        .link-card ul {
            list-style: none;
            margin: 12px 0 0;
            padding: 0;
        }
        .link-card li {
            margin-bottom: 8px;
        }
        .link-card a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            border-bottom: 1px solid #f0ede8;
            font-size: 0.92rem;
        }
        .link-card a i {
            width: 18px;
            color: var(--accent);
            font-size: 0.8rem;
        }
        footer {
            background: var(--header-bg);
            color: #ccc;
            padding: 36px 20px 24px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .footer-inner h4 {
            color: var(--accent);
            font-size: 1rem;
            margin-bottom: 10px;
            border: none;
        }
        friend-link {
            display: block;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            color: #bcd0c5;
            padding: 3px 0;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #2a4a3a;
            padding-top: 18px;
            margin-top: 10px;
            text-align: center;
            font-size: 0.82rem;
            color: #8a9e94;
        }
        .copyright strong {
            color: #ccc;
        }
        @media (max-width: 820px) {
            .interact-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                background: var(--header-bg);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                padding: 16px 20px;
                border-top: 1px solid #2a4a3a;
                box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
                gap: 4px;
                max-height: 70vh;
                overflow-y: auto;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 16px;
                border-radius: 8px;
                font-size: 1rem;
            }
            .nav-overlay.active {
                display: block;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.3);
                z-index: -1;
            }
            .main-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            article {
                padding: 20px 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            .interact-card {
                padding: 14px;
            }
            .breadcrumb {
                font-size: 0.78rem;
                padding: 8px 14px;
            }
            .container {
                padding: 0 12px;
            }
            .stat-card .num {
                font-size: 1.2rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }