*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #2d6a4f;
            --primary-light: #40916c;
            --primary-dark: #1b4332;
            --secondary: #ffb703;
            --accent: #e63946;
            --bg: #f9fbfd;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #555;
            --border: #d8e2dc;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --radius: 18px;
            --transition: 0.25s ease;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 1.0625rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--card-bg);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 3px solid var(--primary);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 0;
            gap: 10px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 2rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .my-logo span {
            font-weight: 300;
            color: var(--text-light);
            font-size: 1rem;
            margin-left: 4px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 16px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            transition: background var(--transition), color var(--transition);
        }
        .main-nav a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        .main-nav a.active {
            background: var(--primary-light);
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid var(--primary);
            border-radius: 10px;
            padding: 8px 12px;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--primary);
            color: #fff;
        }
        .breadcrumb {
            background: var(--card-bg);
            padding: 12px 0 4px;
            font-size: 0.9rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: var(--text-light);
            font-weight: 700;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 70%, var(--primary-light) 100%);
            color: #fff;
            padding: 60px 0 50px;
            border-radius: 0 0 60px 60px;
            margin-bottom: 50px;
        }
        .hero h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
            font-weight: 900;
            line-height: 1.15;
            max-width: 900px;
            margin-bottom: 18px;
        }
        .hero h1 i {
            color: var(--secondary);
        }
        .hero p {
            font-size: 1.25rem;
            max-width: 740px;
            opacity: 0.92;
            margin-bottom: 24px;
        }
        .hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 36px;
            font-size: 0.95rem;
            opacity: 0.8;
        }
        .hero .meta i {
            margin-right: 6px;
        }
        .hero .last-updated {
            background: rgba(255, 255, 255, 0.15);
            padding: 4px 16px;
            border-radius: 40px;
            font-weight: 600;
        }
        .search-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 32px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }
        .search-section label {
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form {
            flex: 1;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 14px 20px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition), transform 0.15s;
        }
        .search-form button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            margin-bottom: 50px;
        }
        @media(max-width:960px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            min-width: 0;
        }
        .main-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 6px solid var(--secondary);
            padding-left: 18px;
        }
        .main-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .main-content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .main-content p {
            margin-bottom: 18px;
        }
        .main-content ul,
        .main-content ol {
            margin-bottom: 20px;
            padding-left: 28px;
        }
        .main-content li {
            margin-bottom: 6px;
        }
        .main-content .highlight-box {
            background: #eef7f2;
            border-left: 5px solid var(--primary);
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .main-content .highlight-box strong {
            color: var(--primary-dark);
        }
        .main-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        .main-content th {
            background: var(--primary);
            color: #fff;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .main-content td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--border);
        }
        .main-content tr:nth-child(even) td {
            background: #f4f9f6;
        }
        .feature-img {
            margin: 28px 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
            margin-bottom: 28px;
        }
        .sidebar-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 14px;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 8px;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
        }
        .sidebar-link-list li {
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
        }
        .sidebar-link-list li:last-child {
            border-bottom: none;
        }
        .sidebar-link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
        }
        .sidebar-link-list a i {
            color: var(--secondary);
            width: 20px;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0;
        }
        @media(max-width:700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px;
        }
        .feedback-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border var(--transition);
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--primary);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition), transform 0.15s;
        }
        .feedback-card .btn-submit:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--secondary);
        }
        friend-link {
            display: block;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 28px;
            margin: 40px 0 20px;
        }
        friend-link h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 14px;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
        }
        friend-link li a {
            font-weight: 500;
        }
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 0 28px;
            margin-top: 50px;
            border-radius: 40px 40px 0 0;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
        }
        .site-footer a {
            color: var(--secondary);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .copyright {
            width: 100%;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            margin-top: 20px;
            font-size: 0.9rem;
            opacity: 0.75;
        }
        @media(max-width:760px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--card-bg);
                padding: 16px 0 20px;
                border-top: 2px solid var(--border);
                border-radius: 0 0 20px 20px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 20px;
                width: 100%;
                border-radius: 0;
            }
            .header-inner {
                padding: 10px 0;
            }
            .hero {
                padding: 40px 0 36px;
                border-radius: 0 0 40px 40px;
            }
            .search-section {
                padding: 20px;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }
        @media(max-width:480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo span {
                font-size: 0.8rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .main-content h2 {
                font-size: 1.6rem;
            }
            .main-content h3 {
                font-size: 1.25rem;
            }
            .sidebar-card {
                padding: 16px;
            }
        }