*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #004e92;
            text-decoration: none;
            transition: color 0.2s ease, border-bottom 0.2s ease;
        }
        a:hover,
        a:focus {
            color: #ff6b35;
            border-bottom: 2px solid #ff6b35;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0f0c29, #1a1a4e, #24243e);
            color: #fff;
            padding: 0.8rem 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: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(255, 210, 0, 0.15);
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
            border-bottom: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #aab;
            display: block;
            font-weight: 300;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 0.3rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #ddd;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: background 0.25s, color 0.25s;
            border-bottom: none;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            background: rgba(255, 210, 0, 0.18);
            color: #ffd200;
            border-bottom: none;
        }
        .breadcrumb {
            background: #eef1f5;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            color: #555;
            border-bottom: 1px solid #e0e3e8;
        }
        .breadcrumb-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            align-items: center;
        }
        .breadcrumb-inner a {
            color: #004e92;
            border-bottom: none;
        }
        .breadcrumb-inner a:hover {
            color: #ff6b35;
        }
        .breadcrumb-inner span {
            color: #888;
        }
        main {
            flex: 1;
            padding: 2.5rem 0 3rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0f0c29;
            margin-bottom: 0.6rem;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h1 .highlight {
            background: linear-gradient(135deg, #f7971e, #ff6b35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #1a1a4e;
            margin: 2.2rem 0 0.8rem;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #f0c27f;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #2d2d5e;
            margin: 1.8rem 0 0.6rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #3a3a6e;
            margin: 1.2rem 0 0.4rem;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.95rem;
            color: #666;
            margin: 0.8rem 0 1.8rem;
            padding: 0.6rem 0;
            border-top: 1px solid #e8ecf0;
            border-bottom: 1px solid #e8ecf0;
        }
        .meta-info i {
            margin-right: 0.3rem;
            color: #f7971e;
        }
        .last-updated {
            font-weight: 600;
            color: #1a1a4e;
        }
        .content p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #2d2d3a;
        }
        .content strong {
            color: #0f0c29;
            font-weight: 700;
        }
        .content .insight-box {
            background: linear-gradient(135deg, #fef9e7, #fdebd0);
            border-left: 5px solid #f7971e;
            padding: 1.4rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
            box-shadow: 0 2px 12px rgba(247, 151, 30, 0.12);
        }
        .content .insight-box i {
            color: #f7971e;
            margin-right: 0.5rem;
        }
        .content .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.2rem;
            margin: 1.6rem 0;
        }
        .content .stat-card {
            background: #fff;
            padding: 1.2rem;
            border-radius: 12px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            text-align: center;
            border: 1px solid #eef0f4;
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .content .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
        }
        .content .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #f7971e;
            display: block;
            line-height: 1.2;
        }
        .content .stat-card .label {
            font-size: 0.95rem;
            color: #555;
            font-weight: 500;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 14px;
            overflow: hidden;
            background: #eef0f4;
            text-align: center;
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1rem;
            font-size: 0.9rem;
            color: #666;
            background: #f8f9fc;
            font-style: italic;
        }
        .link-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            margin: 1.2rem 0;
            padding: 1rem 1.2rem;
            background: #f8f9fc;
            border-radius: 12px;
            border: 1px solid #e8ecf0;
        }
        .link-group a {
            font-weight: 500;
            font-size: 0.95rem;
            border-bottom: none;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .link-group a i {
            color: #f7971e;
            font-size: 0.8rem;
        }
        .form-section {
            background: #fff;
            padding: 2rem 2rem 2.5rem;
            border-radius: 18px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            margin: 2.5rem 0;
            border: 1px solid #eef0f4;
        }
        .form-section h3 {
            margin-top: 0;
            border-bottom: none;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1a1a4e;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #e0e3e8;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.25s, box-shadow 0.25s;
            background: #fafbfc;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #f7971e;
            box-shadow: 0 0 0 4px rgba(247, 151, 30, 0.12);
            background: #fff;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2rem;
            background: linear-gradient(135deg, #f7971e, #ff6b35);
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
            box-shadow: 0 4px 16px rgba(247, 151, 30, 0.3);
        }
        .btn:hover,
        .btn:focus {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(247, 151, 30, 0.4);
            opacity: 0.95;
        }
        .btn-secondary {
            background: linear-gradient(135deg, #1a1a4e, #2d2d6e);
            box-shadow: 0 4px 16px rgba(26, 26, 78, 0.25);
        }
        .btn-secondary:hover {
            box-shadow: 0 8px 28px rgba(26, 26, 78, 0.35);
        }
        .rating-stars {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.4rem;
            font-size: 2rem;
            cursor: pointer;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            color: #ddd;
            transition: color 0.15s, transform 0.15s;
            cursor: pointer;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #f7971e;
            transform: scale(1.05);
        }
        .comment-list {
            margin: 1.6rem 0;
        }
        .comment-item {
            padding: 1.2rem 1.4rem;
            border-radius: 12px;
            background: #f8f9fc;
            margin-bottom: 0.8rem;
            border-left: 4px solid #f7971e;
        }
        .comment-item .author {
            font-weight: 700;
            color: #1a1a4e;
        }
        .comment-item .date {
            font-size: 0.85rem;
            color: #888;
            margin-left: 0.8rem;
        }
        .comment-item .text {
            margin-top: 0.4rem;
            color: #3a3a4e;
        }
        .site-footer {
            background: #0f0c29;
            color: #ccd;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #ffd200;
            margin-bottom: 0.8rem;
            font-size: 1.1rem;
            border-bottom: none;
        }
        .footer-inner a {
            color: #aab;
            border-bottom: none;
            display: block;
            padding: 0.2rem 0;
            font-size: 0.95rem;
        }
        .footer-inner a:hover {
            color: #ffd200;
        }
        friend-link {
            display: block;
            margin: 1.2rem 0 0.6rem;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            color: #aab;
        }
        friend-link a:hover {
            color: #ffd200;
        }
        .copyright {
            text-align: center;
            padding-top: 1.8rem;
            margin-top: 1.8rem;
            border-top: 1px solid #2a2a4e;
            font-size: 0.9rem;
            color: #889;
        }
        .copyright a {
            color: #aab;
            display: inline;
            padding: 0;
        }
        .copyright a:hover {
            color: #ffd200;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a1a4e;
                padding: 0.8rem 0;
                border-radius: 12px;
                margin-top: 0.8rem;
                gap: 0;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.7rem 1.2rem;
                width: 100%;
                text-align: left;
                border-radius: 0;
            }
            .header-inner {
                align-items: center;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .container {
                padding: 0 1rem;
            }
            .form-section {
                padding: 1.4rem 1.2rem;
            }
            .content .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .meta-info {
                flex-direction: column;
                gap: 0.3rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
        }
        @media (max-width: 480px) {
            .content .stat-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb-inner {
                font-size: 0.8rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #eef1f5;
        }
        ::-webkit-scrollbar-thumb {
            background: #c0c5d0;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #a0a8b8;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        :focus-visible {
            outline: 3px solid #f7971e;
            outline-offset: 2px;
        }