* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0a0a23 0%, #1a1a4e 100%);
            padding: 18px 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;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo span {
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo i {
            color: #ffd200;
            -webkit-text-fill-color: #ffd200;
            font-size: 1.6rem;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #aaa;
            -webkit-text-fill-color: #aaa;
            display: block;
            letter-spacing: 0.3px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list a {
            color: #ddd;
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a:hover,
        .nav-list a.active {
            background: rgba(255, 210, 0, 0.15);
            color: #ffd200;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-open .nav-list {
            display: flex !important;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #e8ecf0;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #999;
            margin-right: 12px;
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: #2a6f97;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 500;
        }
        main {
            padding: 40px 0 60px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0a0a23;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: #f7971e;
            margin-right: 10px;
        }
        .last-updated {
            display: inline-block;
            background: #eef3f8;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2a6f97;
            margin-bottom: 24px;
            border: 1px solid #dce5ec;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .hero-img {
            width: 100%;
            border-radius: 18px;
            margin: 24px 0 32px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
            display: block;
            object-fit: cover;
            aspect-ratio: 1200/630;
            background: #1a1a4e;
        }
        article {
            background: #fff;
            border-radius: 20px;
            padding: 40px 44px;
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.04);
        }
        article p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            color: #2d2d44;
        }
        article h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 16px;
            color: #0a0a23;
            border-left: 5px solid #f7971e;
            padding-left: 18px;
        }
        article h2 i {
            color: #f7971e;
            margin-right: 10px;
        }
        article h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #16213e;
        }
        article h3 i {
            color: #2a6f97;
            margin-right: 8px;
            font-size: 1.3rem;
        }
        article h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: #1a3a5c;
        }
        article ul,
        article ol {
            margin: 0 0 20px 24px;
            color: #2d2d44;
        }
        article li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        article strong {
            color: #0a0a23;
        }
        article a {
            color: #c7511a;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color 0.2s;
        }
        article a:hover {
            color: #0a0a23;
        }
        .highlight-box {
            background: #f9f3e7;
            border-left: 5px solid #f7971e;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .highlight-box i {
            color: #f7971e;
            margin-right: 8px;
        }
        .insight-box {
            background: #eef6fb;
            border-left: 5px solid #2a6f97;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .insight-box i {
            color: #2a6f97;
            margin-right: 8px;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-card {
            background: #f5f7fa;
            border-radius: 14px;
            padding: 20px;
            text-align: center;
            border: 1px solid #e8ecf0;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #f7971e;
            display: block;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: #555;
            margin-top: 4px;
        }
        .form-section {
            margin: 48px 0 32px;
            padding-top: 32px;
            border-top: 2px solid #e8ecf0;
        }
        .form-section h3 {
            margin-top: 0;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px 32px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 4px;
            color: #16213e;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #d0d7de;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s, box-shadow 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #f7971e;
            box-shadow: 0 0 0 3px rgba(247, 151, 30, 0.15);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            padding: 12px 32px;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #0a0a23;
            color: #fff;
        }
        .btn:hover {
            background: #1a1a4e;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .btn-primary {
            background: #f7971e;
            color: #0a0a23;
        }
        .btn-primary:hover {
            background: #e08810;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: #f7971e;
            transform: scale(1.1);
        }
        .rating-value {
            font-size: 1rem;
            font-weight: 600;
            margin-left: 12px;
            color: #555;
        }
        friend-link {
            display: block;
            padding: 32px 0 24px;
            margin-top: 40px;
            border-top: 2px solid #e8ecf0;
        }
        friend-link h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 14px;
            color: #0a0a23;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
            padding: 0;
        }
        friend-link a {
            color: #2a6f97;
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.2s;
        }
        friend-link a:hover {
            color: #f7971e;
            text-decoration: underline;
        }
        footer {
            background: #0a0a23;
            color: #ccc;
            padding: 28px 0;
            margin-top: 20px;
            font-size: 0.9rem;
        }
        footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        footer a {
            color: #ffd200;
            text-decoration: none;
        }
        footer a:hover {
            text-decoration: underline;
        }
        footer .copyright {
            color: #888;
            font-size: 0.85rem;
        }
        @media (max-width: 900px) {
            .form-grid {
                grid-template-columns: 1fr;
            }
            article {
                padding: 24px 18px;
            }
            h1 {
                font-size: 2rem;
            }
            article h2 {
                font-size: 1.6rem;
            }
            article h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f0f2e;
                padding: 16px 0;
                border-radius: 0 0 16px 16px;
                margin-top: 12px;
                gap: 2px;
            }
            .nav-list a {
                padding: 12px 20px;
                border-radius: 0;
                border-left: 3px solid transparent;
            }
            .nav-list a:hover {
                border-left-color: #ffd200;
                background: rgba(255, 210, 0, 0.06);
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.6rem;
            }
            article {
                padding: 16px 12px;
                border-radius: 14px;
            }
            article p {
                font-size: 0.98rem;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .form-grid {
                gap: 16px;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .author-note {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #f9fafc;
            padding: 16px 20px;
            border-radius: 14px;
            margin: 24px 0;
            border: 1px solid #e8ecf0;
            flex-wrap: wrap;
        }
        .author-note i {
            font-size: 2.2rem;
            color: #2a6f97;
        }
        .author-note p {
            margin: 0;
            font-size: 0.95rem;
            color: #444;
            flex: 1;
        }