* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fa;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        header {
            padding: 24px 0 16px;
            border-bottom: 2px solid #e2e8f0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #0f172a;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .my-logo i {
            -webkit-text-fill-color: #2563eb;
            margin-right: 6px;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #1e293b;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e2e8f0;
        }
        nav {
            display: flex;
            gap: 8px 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            color: #1e293b;
            font-size: 0.95rem;
        }
        nav a:hover {
            background: #e2e8f0;
            color: #2563eb;
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
            color: #2563eb;
        }
        .breadcrumb {
            padding: 12px 0 8px;
            font-size: 0.85rem;
            color: #64748b;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            gap: 4px 8px;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb span {
            color: #94a3b8;
        }
        main {
            padding: 32px 0 48px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0f172a;
        }
        h1 i {
            color: #2563eb;
            margin-right: 12px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #2563eb;
            color: #0f172a;
        }
        h2 i {
            color: #2563eb;
            margin-right: 10px;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: #1e293b;
        }
        h3 i {
            color: #7c3aed;
            margin-right: 8px;
            font-size: 1.1rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: #334155;
        }
        p {
            margin-bottom: 16px;
            font-size: 1.05rem;
            color: #1e293b;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #64748b;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .last-updated i {
            color: #2563eb;
        }
        .hero-img {
            margin: 24px 0 32px;
            border-radius: 14px;
            background: #e2e8f0;
            padding: 4px;
        }
        .highlight-box {
            background: linear-gradient(135deg, #eff6ff, #f5f3ff);
            border-left: 4px solid #2563eb;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-weight: 500;
        }
        .highlight-box i {
            color: #2563eb;
            margin-right: 8px;
        }
        .tip-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 20px 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin: 20px 0;
            border: 1px solid #e2e8f0;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .tip-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.10);
        }
        .tip-card h4 {
            margin-top: 0;
            color: #2563eb;
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            margin: 16px 0 24px;
            padding: 0;
            list-style: none;
        }
        .link-list li a {
            background: #f1f5f9;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            display: inline-block;
            border: 1px solid #e2e8f0;
            transition: all 0.2s;
        }
        .link-list li a:hover {
            background: #2563eb;
            color: #fff;
            border-color: #2563eb;
            text-decoration: none;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-item {
            background: #ffffff;
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
        }
        .stat-item i {
            font-size: 2rem;
            color: #2563eb;
            margin-bottom: 8px;
        }
        .stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0f172a;
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: #64748b;
        }
        .search-section {
            background: #ffffff;
            border-radius: 14px;
            padding: 28px 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            margin: 32px 0;
            border: 1px solid #e2e8f0;
        }
        .search-section h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-form input:focus {
            border-color: #2563eb;
        }
        .search-form button {
            padding: 14px 32px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 32px 0;
        }
        .feedback-card {
            background: #ffffff;
            border-radius: 14px;
            padding: 24px 28px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.2s;
            font-family: inherit;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #2563eb;
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card button {
            padding: 12px 28px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #fbbf24;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.2s, transform 0.1s;
            color: #d1d5db;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #fbbf24;
            transform: scale(1.05);
        }
        footer {
            padding: 32px 0 24px;
            border-top: 2px solid #e2e8f0;
            margin-top: 16px;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
        }
        .footer-col {
            flex: 1;
            min-width: 180px;
        }
        .footer-col h4 {
            margin-bottom: 12px;
            color: #0f172a;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: #475569;
        }
        .footer-col a:hover {
            color: #2563eb;
        }
        friend-link {
            display: block;
            padding: 12px 0;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: #f1f5f9;
            border-radius: 16px;
            font-size: 0.85rem;
            border: 1px solid #e2e8f0;
        }
        friend-link a:hover {
            background: #2563eb;
            color: #fff;
            border-color: #2563eb;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            font-size: 0.85rem;
            color: #64748b;
            border-top: 1px solid #e2e8f0;
            margin-top: 16px;
        }
        .copyright i {
            color: #ef4444;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 16px 0 8px;
                gap: 6px;
            }
            nav.show {
                display: flex;
            }
            nav a {
                width: 100%;
                padding: 10px 16px;
                border-radius: 8px;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-inner {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .feedback-card {
                padding: 16px 18px;
            }
            .search-section {
                padding: 18px 16px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        @media print {
            .search-section,
            .feedback-grid,
            .hamburger {
                display: none !important;
            }
            nav {
                display: flex !important;
            }
            body {
                max-width: 100%;
                padding: 0;
            }
        }