* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: #f8f9fc;
            color: #1a1a2e;
            line-height: 1.8;
            font-size: 16px;
        }
        a {
            color: #e44d2e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b8321a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0f0c29, #1a1a3e, #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;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-shadow: 0 0 30px rgba(255, 210, 0, 0.15);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #aaa;
            display: block;
            font-weight: 400;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #f7971e;
            color: #f7971e;
        }
        nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #ddd;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: 0.2s;
            border: 1px solid transparent;
        }
        nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
            font-size: 0.8rem;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #e9ecef;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #999;
        }
        .breadcrumb a {
            color: #e44d2e;
        }
        .breadcrumb .current {
            color: #666;
            font-weight: 500;
        }
        .page-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 900px) {
            .page-wrap {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        article {
            background: #fff;
            border-radius: 20px;
            padding: 32px 36px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        @media (max-width: 600px) {
            article {
                padding: 20px 16px;
            }
        }
        article h1 {
            font-size: 2.4rem;
            line-height: 1.2;
            margin-bottom: 12px;
            color: #0f0c29;
            font-weight: 800;
        }
        article h1 i {
            color: #f7971e;
            margin-right: 12px;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            color: #777;
            font-size: 0.9rem;
            margin-bottom: 28px;
            padding-bottom: 16px;
            border-bottom: 1px solid #f0f0f0;
        }
        .meta-info i {
            margin-right: 6px;
            color: #e44d2e;
        }
        article h2 {
            font-size: 1.8rem;
            margin: 40px 0 16px 0;
            color: #1a1a3e;
            font-weight: 700;
            border-left: 5px solid #f7971e;
            padding-left: 18px;
        }
        article h3 {
            font-size: 1.35rem;
            margin: 32px 0 12px 0;
            color: #2a2a4e;
            font-weight: 600;
        }
        article h4 {
            font-size: 1.1rem;
            margin: 24px 0 8px 0;
            color: #3a3a5e;
            font-weight: 600;
            font-style: italic;
        }
        article p {
            margin-bottom: 18px;
            color: #2d2d44;
        }
        article ul,
        article ol {
            margin: 12px 0 22px 30px;
            color: #2d2d44;
        }
        article li {
            margin-bottom: 8px;
        }
        .feature-img {
            margin: 28px 0;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .highlight-box {
            background: #fef6e9;
            border-left: 5px solid #f7971e;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .highlight-box p {
            margin-bottom: 0;
        }
        .btn-download {
            display: inline-block;
            background: linear-gradient(135deg, #e44d2e, #b8321a);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: 0.3s;
            box-shadow: 0 6px 20px rgba(228, 77, 46, 0.3);
            border: none;
            cursor: pointer;
        }
        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(228, 77, 46, 0.4);
            text-decoration: none;
            color: #fff;
        }
        .btn-download i {
            margin-right: 10px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 14px;
            color: #1a1a3e;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 10px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card li a {
            display: block;
            padding: 8px 12px;
            background: #f8f9fc;
            border-radius: 8px;
            transition: 0.2s;
            font-size: 0.92rem;
        }
        .sidebar-card li a:hover {
            background: #fef0e8;
            text-decoration: none;
            color: #e44d2e;
        }
        .sidebar-card li a i {
            margin-right: 8px;
            color: #f7971e;
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
        }
        .search-form input:focus {
            border-color: #f7971e;
        }
        .search-form button {
            background: #1a1a3e;
            color: #fff;
            border: none;
            padding: 0 20px;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-form button:hover {
            background: #e44d2e;
        }
        .interaction-area {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 2px solid #f0f0f0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 700px) {
            .interaction-area {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .interaction-card {
            background: #f8f9fc;
            padding: 22px 24px;
            border-radius: 16px;
        }
        .interaction-card h3 {
            font-size: 1.2rem;
            margin-bottom: 14px;
            color: #1a1a3e;
        }
        .interaction-card h3 i {
            color: #f7971e;
            margin-right: 8px;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            padding: 10px 14px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
            font-family: inherit;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            border-color: #f7971e;
        }
        .interaction-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .interaction-card .btn-submit {
            background: #e44d2e;
            color: #fff;
            border: none;
            padding: 12px 20px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 1rem;
        }
        .interaction-card .btn-submit:hover {
            background: #b8321a;
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #ccc;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: 0.2s;
            color: #ccc;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f7b731;
        }
        footer {
            background: #0f0c29;
            color: #bbb;
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media (max-width: 700px) {
            footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        footer a {
            color: #f7971e;
        }
        footer a:hover {
            color: #ffd200;
        }
        friend-link {
            display: block;
            margin-top: 10px;
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: #888;
        }
        .copyright strong {
            color: #ddd;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .header-inner {
                position: relative;
            }
            article h1 {
                font-size: 1.8rem;
            }
            article h2 {
                font-size: 1.4rem;
            }
            article h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            article {
                padding: 16px 12px;
            }
            .sidebar-card {
                padding: 16px 14px;
            }
            .interaction-card {
                padding: 16px 14px;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #1a1a3e;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            transition: 0.3s;
            cursor: pointer;
            border: none;
            z-index: 999;
        }
        .scroll-top:hover {
            background: #e44d2e;
            transform: translateY(-4px);
        }
        @media (max-width: 600px) {
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th {
            background: #1a1a3e;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
        }
        table td {
            padding: 10px 16px;
            border-bottom: 1px solid #eee;
        }
        table tr:hover td {
            background: #f8f4f0;
        }
        blockquote {
            background: #f0ede8;
            padding: 18px 24px;
            border-radius: 12px;
            margin: 20px 0;
            font-style: italic;
            border-left: 5px solid #f7971e;
            color: #3a3a4e;
        }
        blockquote cite {
            display: block;
            margin-top: 8px;
            font-size: 0.85rem;
            color: #888;
        }