* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f8f9fa;
            color: #1a1a2e;
            line-height: 1.8;
            font-size: 16px;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #004499;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 900;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(90deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.04);
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 14px;
            display: block;
            -webkit-text-fill-color: #aaa;
            letter-spacing: 1px;
        }
        .hamburger {
            display: none;
            font-size: 28px;
            color: #fff;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 6px;
            transition: background 0.3s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 24px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #ddd;
            font-weight: 500;
            font-size: 15px;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .nav-menu a:hover {
            color: #ffd200;
            border-bottom-color: #ffd200;
            text-decoration: none;
        }
        .nav-menu a.active {
            color: #ffd200;
            border-bottom-color: #ffd200;
        }
        .breadcrumb {
            background: #eef1f5;
            padding: 12px 0;
            font-size: 14px;
            color: #555;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 8px;
            color: #999;
        }
        .breadcrumb a {
            color: #0066cc;
        }
        .breadcrumb .current {
            color: #333;
            font-weight: 600;
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .main-content h1 {
            font-size: 36px;
            font-weight: 800;
            color: #0f0c29;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .main-content h1 .highlight {
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: #1a1a2e;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #f7971e;
        }
        .main-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: #302b63;
            margin: 32px 0 12px;
        }
        .main-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: #444;
            margin: 24px 0 10px;
        }
        .main-content p {
            margin-bottom: 18px;
            color: #2d2d3a;
        }
        .main-content .lead {
            font-size: 19px;
            font-weight: 400;
            color: #1a1a2e;
            background: #f0f2ff;
            padding: 20px 24px;
            border-radius: 12px;
            border-left: 5px solid #f7971e;
            margin-bottom: 28px;
        }
        .main-content ul,
        .main-content ol {
            margin: 16px 0 24px 24px;
            color: #2d2d3a;
        }
        .main-content li {
            margin-bottom: 8px;
        }
        .main-content strong {
            color: #0f0c29;
        }
        .main-content .emoji-big {
            font-size: 28px;
            margin-right: 6px;
        }
        .main-content .tip-box {
            background: #eef9f2;
            border-radius: 12px;
            padding: 20px 24px;
            margin: 24px 0;
            border-left: 5px solid #28a745;
        }
        .main-content .tip-box strong {
            color: #155724;
        }
        .main-content .pro-tip {
            background: #fff8e1;
            border-left-color: #ffc107;
        }
        .main-content .stat-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .main-content .stat-item {
            background: #fff;
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            border: 1px solid #eaeaea;
        }
        .main-content .stat-item .number {
            font-size: 32px;
            font-weight: 800;
            color: #f7971e;
            display: block;
        }
        .main-content .stat-item .label {
            font-size: 14px;
            color: #666;
            margin-top: 4px;
        }
        .main-content .image-wrapper {
            margin: 32px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .main-content .image-wrapper figcaption {
            background: #f1f3f8;
            padding: 12px 18px;
            font-size: 14px;
            color: #555;
            text-align: center;
            font-style: italic;
        }
        .main-content .link-list {
            background: #f9faff;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
            border: 1px solid #e0e4f0;
        }
        .main-content .link-list a {
            display: inline-block;
            margin: 4px 12px 4px 0;
        }
        .main-content .last-updated {
            font-size: 14px;
            color: #888;
            margin-top: 8px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-section {
            background: #fff;
            padding: 32px 28px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin: 40px 0;
            border: 1px solid #eaeaea;
        }
        .search-section h3 {
            margin-top: 0;
            border-bottom: none;
        }
        .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 #ddd;
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            border-color: #f7971e;
        }
        .search-form button {
            padding: 14px 32px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            color: #1a1a2e;
            font-weight: 700;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .search-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(247, 151, 30, 0.4);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        .feedback-card {
            background: #fff;
            padding: 28px 26px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #eaeaea;
        }
        .feedback-card h3 {
            margin-top: 0;
            border-bottom: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card textarea {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 15px;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: border-color 0.3s;
            margin: 12px 0;
        }
        .feedback-card textarea:focus {
            border-color: #f7971e;
        }
        .feedback-card input[type="text"] {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 15px;
            outline: none;
            transition: border-color 0.3s;
            margin-bottom: 12px;
        }
        .feedback-card input[type="text"]:focus {
            border-color: #f7971e;
        }
        .feedback-card .btn-submit {
            padding: 12px 28px;
            background: linear-gradient(135deg, #302b63, #24243e);
            color: #fff;
            font-weight: 600;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .feedback-card .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(48, 43, 99, 0.4);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 6px;
            margin: 12px 0 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 28px;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f7971e;
        }
        .site-footer {
            background: #0f0c29;
            color: #ccc;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .site-footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 14px;
        }
        .site-footer p {
            font-size: 14px;
            line-height: 1.7;
            color: #aaa;
        }
        .site-footer a {
            color: #bbb;
            font-size: 14px;
            display: inline-block;
            margin-bottom: 6px;
        }
        .site-footer a:hover {
            color: #ffd200;
        }
        .site-footer .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin-top: 8px;
        }
        .site-footer .friend-links a {
            font-size: 14px;
        }
        .site-footer .copyright {
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid #2a2a4a;
            font-size: 13px;
            color: #777;
        }
        .site-footer .copyright strong {
            color: #aaa;
        }
        @media (max-width: 900px) {
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 8px;
                padding: 18px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 12px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                font-size: 16px;
                padding: 10px 0;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .main-content h1 {
                font-size: 26px;
            }
            .main-content h2 {
                font-size: 22px;
            }
            .main-content h3 {
                font-size: 18px;
            }
            .main-content .lead {
                font-size: 16px;
                padding: 16px 18px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .container {
                padding: 0 14px;
            }
            .stat-box {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .stat-box {
                grid-template-columns: 1fr;
            }
            .my-logo {
                font-size: 22px;
            }
            .feedback-card {
                padding: 20px 16px;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #f7971e;
            color: #1a1a2e;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 4px 16px rgba(247, 151, 30, 0.4);
            cursor: pointer;
            transition: transform 0.3s, opacity 0.3s;
            opacity: 0.8;
            border: none;
            z-index: 999;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            opacity: 1;
        }