:root {
            --primary: #2d7d46;
            --primary-dark: #1a5c2e;
            --accent: #ff8c00;
            --bg: #f5f7f5;
            --card-bg: #ffffff;
            --text: #223322;
            --text-light: #556655;
            --border: #dde5dd;
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --radius: 14px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .site-header {
            background: linear-gradient(135deg, #1a5c2e 0%, #2d7d46 50%, #1e6b3a 100%);
            color: #fff;
            padding: 14px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 2rem;
        }
        .my-logo:hover {
            color: #fff;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #fff;
            cursor: pointer;
        }
        .nav-menu {
            display: flex;
            gap: 18px;
            list-style: none;
            align-items: center;
        }
        .nav-menu li a {
            color: #e0efe0;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 20px;
            transition: background 0.3s, color 0.3s;
        }
        .nav-menu li a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb {
            max-width: 1280px;
            margin: 0 auto;
            padding: 14px 20px 4px;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .main-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 20px;
            display: grid;
            grid-template-columns: minmax(0, 1fr) 300px;
            gap: 30px;
        }
        .content {
            min-width: 0;
        }
        .sidebar {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
            height: max-content;
            position: sticky;
            top: 80px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--primary-dark);
            border-bottom: 2px solid var(--border);
            padding-bottom: 8px;
        }
        .sidebar ul {
            list-style: none;
            margin-bottom: 20px;
        }
        .sidebar ul li {
            margin-bottom: 6px;
        }
        .sidebar ul li a {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 4px 6px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .sidebar ul li a:hover {
            background: #eef6ee;
            text-decoration: none;
        }
        .search-box {
            display: flex;
            margin-bottom: 20px;
            border: 2px solid var(--border);
            border-radius: 30px;
            overflow: hidden;
            background: #fff;
            transition: border-color 0.3s;
        }
        .search-box:focus-within {
            border-color: var(--primary);
        }
        .search-box input {
            flex: 1;
            padding: 10px 16px;
            border: none;
            outline: none;
            font-size: 0.95rem;
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0 18px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: var(--primary-dark);
        }
        .article {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 30px 34px;
            box-shadow: var(--shadow);
        }
        .article h1 {
            font-size: 2.4rem;
            color: var(--primary-dark);
            margin-bottom: 8px;
            line-height: 1.3;
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        .article .meta {
            color: var(--text-light);
            font-size: 0.85rem;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article .meta i {
            margin-right: 4px;
        }
        .article h2 {
            font-size: 1.8rem;
            color: var(--primary-dark);
            margin: 40px 0 16px;
            padding-bottom: 6px;
            border-bottom: 2px solid var(--border);
        }
        .article h3 {
            font-size: 1.3rem;
            color: var(--primary);
            margin: 24px 0 10px;
        }
        .article h4 {
            font-size: 1.05rem;
            color: var(--text);
            margin: 16px 0 6px;
            font-weight: 700;
        }
        .article p {
            margin-bottom: 14px;
            font-size: 1rem;
        }
        .article ul,
        .article ol {
            margin-bottom: 14px;
            padding-left: 24px;
        }
        .article li {
            margin-bottom: 6px;
        }
        .article blockquote {
            background: #f0f8f0;
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 10px 10px 0;
            font-style: italic;
            color: #334433;
        }
        .article img {
            margin: 20px 0;
            box-shadow: var(--shadow);
        }
        .article figure {
            margin: 20px 0;
        }
        .article figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 6px;
        }
        .tip-box {
            background: #fff8ee;
            border: 1px solid #ffe0b8;
            border-radius: 10px;
            padding: 16px 18px;
            margin: 20px 0;
        }
        .tip-box strong {
            color: #cc6600;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #f0faf0, #e8f2e8);
            border-radius: 12px;
            text-align: center;
            padding: 20px 10px;
            box-shadow: var(--shadow);
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .stat-card .label {
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .feedback-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }
        .feedback-card {
            background: #fafcfa;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 20px;
        }
        .feedback-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .star-rating i {
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: #ffb400;
        }
        .feedback-card textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 10px;
            font-size: 0.9rem;
            resize: vertical;
            min-height: 80px;
            font-family: inherit;
        }
        .feedback-card input {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 10px;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }
        .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 22px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: background 0.3s;
        }
        .btn-submit:hover {
            background: var(--primary-dark);
        }
        .site-footer {
            background: #1a2b1a;
            color: #b0c0b0;
            padding: 40px 20px 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }
        .footer-inner h4 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 1rem;
        }
        .footer-inner a {
            color: #90b090;
        }
        .footer-inner a:hover {
            color: #fff;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0 0;
            border-top: 1px solid #2a3b2a;
            margin-top: 20px;
            font-size: 0.85rem;
            color: #708070;
        }
        friend-link {
            display: block;
            margin-top: 10px;
            font-size: 0.9rem;
        }
        friend-link a {
            margin-right: 10px;
        }
        @media (max-width: 900px) {
            .main-container {
                grid-template-columns: 1fr;
                padding: 14px;
            }
            .sidebar {
                position: static;
                order: 2;
                margin-top: 20px;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 10px 0;
                gap: 8px;
                background: var(--primary-dark);
                border-radius: 12px;
                margin-top: 10px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .feedback-wrap {
                grid-template-columns: 1fr;
            }
            .article {
                padding: 20px 16px;
            }
            .article h1 {
                font-size: 1.8rem;
            }
            .article h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .article {
                padding: 16px 12px;
            }
        }