* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 1.05rem;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b35;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        header {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            color: #fff;
            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;
            gap: 12px;
        }
        .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;
            display: inline-block;
            font-family: 'Segoe UI', system-ui, sans-serif;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #ffd200;
            margin-right: 6px;
        }
        .logo-sub {
            font-size: 0.75rem;
            color: #aab;
            display: block;
            letter-spacing: 2px;
            font-weight: 300;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #eee;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.06);
            transition: all 0.25s;
            display: block;
            white-space: nowrap;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #ffd200;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #e8edf5;
            padding: 12px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0d8e8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #888;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2a4a7f;
        }
        .breadcrumb .current {
            color: #666;
            font-weight: 500;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0f0c29;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .article-body h1 i {
            color: #f7971e;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            color: #5a5a7a;
            font-size: 0.9rem;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px dashed #d0d8e8;
        }
        .meta-info i {
            margin-right: 6px;
            color: #f7971e;
        }
        .article-body h2 {
            font-size: 1.9rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #1a1a2e;
            font-weight: 700;
            border-left: 5px solid #f7971e;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.45rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #2a2a4a;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.2rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #3a3a5a;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #2a2a3e;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .feature-box {
            background: #eef3fa;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 24px 0;
            border-left: 6px solid #f7971e;
        }
        .article-body .feature-box i {
            color: #f7971e;
            margin-right: 8px;
        }
        .article-body .highlight {
            background: linear-gradient(120deg, #fff3d6 0%, #fff3d6 40%, transparent 80%);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .article-body .pro-tip {
            background: #1a2a3a;
            color: #f0f4fa;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 24px 0;
        }
        .article-body .pro-tip strong {
            color: #ffd200;
        }
        .featured-image-wrap {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image-wrap img {
            width: 100%;
            display: block;
        }
        .featured-image-wrap figcaption {
            background: #f0f4fa;
            padding: 12px 20px;
            font-size: 0.85rem;
            color: #555;
            text-align: center;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 24px;
            border: 1px solid #e8edf5;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 14px;
            color: #0f0c29;
            border-bottom: 2px solid #f0f2f8;
            padding-bottom: 10px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f2f8;
        }
        .sidebar-card ul li a {
            font-weight: 500;
        }
        .sidebar-card ul li i {
            color: #f7971e;
            width: 20px;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #d0d8e8;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
        }
        .search-form input:focus {
            border-color: #f7971e;
            box-shadow: 0 0 0 4px rgba(247, 151, 30, 0.12);
        }
        .search-form button {
            background: #f7971e;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0 24px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-form button:hover {
            background: #e0860a;
            transform: scale(1.03);
        }
        .feedback-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 3px solid #e0e6f0;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #d0d8e8;
            border-radius: 12px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 120px;
            outline: none;
            transition: 0.2s;
            font-family: inherit;
        }
        .comment-box textarea:focus {
            border-color: #f7971e;
            box-shadow: 0 0 0 4px rgba(247, 151, 30, 0.08);
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #d0d8e8;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
            margin-bottom: 12px;
        }
        .comment-box input[type="text"]:focus {
            border-color: #f7971e;
        }
        .btn-submit {
            background: #f7971e;
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-submit:hover {
            background: #e0860a;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(247, 151, 30, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            margin: 12px 0;
        }
        .rating-stars i {
            transition: 0.15s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f7b731;
            transform: scale(1.1);
        }
        .rating-stars i.fa-solid {
            color: #f7b731;
        }
        friend-link {
            display: block;
            background: #1a1a2e;
            color: #ccd;
            padding: 32px 0;
            border-top: 4px solid #f7971e;
        }
        friend-link .container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
        }
        friend-link a {
            color: #aab8dd;
            font-weight: 500;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 20px;
            transition: 0.2s;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: #ffd200;
            background: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        footer {
            background: #0f0c29;
            color: #8899bb;
            padding: 24px 0;
            text-align: center;
            font-size: 0.85rem;
            border-top: 1px solid #2a2a4a;
        }
        footer .container {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        footer a {
            color: #aab8dd;
        }
        footer a:hover {
            color: #ffd200;
        }
        @media (max-width: 880px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(15, 12, 41, 0.98);
                padding: 16px 0;
                border-radius: 16px;
                margin-top: 8px;
            }
            .nav-list.show {
                display: flex;
            }
            .nav-list li a {
                padding: 12px 20px;
                border-radius: 0;
                background: transparent;
            }
            .hamburger {
                display: block;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.25rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .article-body h1 {
                font-size: 1.5rem;
            }
            .meta-info {
                font-size: 0.8rem;
                gap: 10px;
            }
            .btn-submit {
                width: 100%;
                justify-content: center;
            }
        }
        .text-sm {
            font-size: 0.9rem;
        }
        .mt-2 {
            margin-top: 12px;
        }
        .flex {
            display: flex;
        }
        .gap-2 {
            gap: 12px;
        }
        .items-center {
            align-items: center;
        }
        .rounded-full {
            border-radius: 999px;
        }