* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0 1rem;
            scroll-behavior: smooth;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #fff;
            box-shadow: 0 0 40px rgba(0, 0, 0, .04);
            border-radius: 24px;
            padding: 0 2rem 2rem;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0;
            border-bottom: 2px solid #eef0f5;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #6b3fa0, #9b4dca);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -.5px;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: .85;
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            color: #1e1e2a;
            cursor: pointer;
            padding: .4rem .6rem;
            border-radius: 8px;
            transition: background .2s;
        }
        .hamburger:hover {
            background: #f0f0f5;
        }
        nav#main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            align-items: center;
        }
        nav#main-nav ul li a {
            font-weight: 600;
            font-size: .95rem;
            color: #2d2d3f;
            padding: .4rem 0;
            border-bottom: 2px solid transparent;
            transition: .2s;
        }
        nav#main-nav ul li a:hover {
            color: #6b3fa0;
            border-bottom-color: #6b3fa0;
            text-decoration: none;
        }
        .breadcrumb {
            padding: .8rem 0 .4rem;
            font-size: .85rem;
            color: #6b7280;
            display: flex;
            flex-wrap: wrap;
            gap: .3rem .6rem;
        }
        .breadcrumb a {
            color: #6b7280;
        }
        .breadcrumb a:hover {
            color: #2563eb;
        }
        .breadcrumb span {
            color: #9ca3af;
        }
        .hero {
            padding: 2rem 0 1.2rem;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0f0f1a;
            margin-bottom: .6rem;
        }
        .hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            color: #6b7280;
            font-size: .9rem;
            margin-bottom: .4rem;
        }
        .hero .meta i {
            margin-right: .3rem;
        }
        .last-updated {
            font-weight: 600;
            color: #4b5563;
        }
        .content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 1.5rem 0 2rem;
        }
        .content-main {
            min-width: 0;
        }
        .content-main h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem;
            color: #0f0f1a;
            border-left: 5px solid #7c3aed;
            padding-left: 1rem;
        }
        .content-main h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 1.8rem 0 .8rem;
            color: #1e1e2a;
        }
        .content-main h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.4rem 0 .6rem;
            color: #2d2d3f;
        }
        .content-main p {
            margin-bottom: 1.2rem;
            font-size: 1.02rem;
            color: #2a2a3a;
        }
        .content-main ul,
        .content-main ol {
            margin: .8rem 0 1.4rem 1.8rem;
        }
        .content-main li {
            margin-bottom: .5rem;
            font-size: 1.02rem;
        }
        .content-main .img-wrapper {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            background: #f3f4f6;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
        }
        .content-main .img-wrapper figcaption {
            padding: .8rem 1.2rem;
            font-size: .85rem;
            color: #6b7280;
            background: #fafafa;
            border-top: 1px solid #eee;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f5f3ff, #ede9fe);
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 1.8rem 0;
            border-left: 4px solid #7c3aed;
        }
        .highlight-box strong {
            color: #4c1d95;
        }
        .btn {
            display: inline-block;
            background: #7c3aed;
            color: #fff;
            padding: .55rem 1.4rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: .9rem;
            border: none;
            cursor: pointer;
            transition: .25s;
        }
        .btn:hover {
            background: #6d28d9;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, .3);
            text-decoration: none;
            color: #fff;
        }
        blockquote {
            border-left: 4px solid #7c3aed;
            background: #f9f7ff;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2d2d3f;
        }
        blockquote footer {
            margin-top: .6rem;
            font-style: normal;
            font-weight: 600;
            color: #4b5563;
        }
        .sidebar {
            position: sticky;
            top: 1.5rem;
            align-self: start;
        }
        .sidebar-card {
            background: #f9fafb;
            border-radius: 16px;
            padding: 1.4rem 1.6rem;
            margin-bottom: 1.8rem;
            border: 1px solid #eef0f5;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: .8rem;
            color: #0f0f1a;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: .4rem 0;
            border-bottom: 1px solid #edf2f7;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-size: .92rem;
            font-weight: 500;
        }
        .search-form {
            display: flex;
            gap: .5rem;
            margin: 1rem 0 1.8rem;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: .7rem 1.2rem;
            border: 2px solid #e5e7eb;
            border-radius: 40px;
            font-size: .95rem;
            outline: none;
            transition: .25s;
        }
        .search-form input[type="text"]:focus {
            border-color: #7c3aed;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, .15);
        }
        .search-form button {
            background: #7c3aed;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: .7rem 1.4rem;
            font-weight: 600;
            cursor: pointer;
            transition: .25s;
        }
        .search-form button:hover {
            background: #6d28d9;
        }
        .feedback-section {
            background: #f9fafb;
            border-radius: 20px;
            padding: 2rem;
            margin: 2.5rem 0 1.5rem;
            border: 1px solid #eef0f5;
        }
        .feedback-section h2 {
            border-left: none;
            padding-left: 0;
            margin-top: 0;
        }
        .rating-stars {
            display: flex;
            gap: .3rem;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            margin: .8rem 0 1.2rem;
        }
        .rating-stars .star.active {
            color: #f59e0b;
        }
        .rating-stars .star:hover {
            color: #f59e0b;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem 1.2rem;
            border: 2px solid #e5e7eb;
            border-radius: 16px;
            font-size: .95rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: .25s;
        }
        .comment-form textarea:focus {
            border-color: #7c3aed;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, .15);
        }
        .comment-form .btn {
            margin-top: .8rem;
        }
        .comment-list {
            margin-top: 1.8rem;
        }
        .comment-item {
            padding: 1rem 0;
            border-bottom: 1px solid #edf2f7;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0f0f1a;
        }
        .comment-item .date {
            font-size: .8rem;
            color: #9ca3af;
            margin-left: .8rem;
        }
        .comment-item .text {
            margin-top: .3rem;
            color: #2d2d3f;
        }
        footer {
            border-top: 2px solid #eef0f5;
            padding: 2rem 0 1.5rem;
            margin-top: 1rem;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 1.8rem;
        }
        footer .footer-brand .my-logo {
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: .6rem;
        }
        footer .footer-brand p {
            font-size: .9rem;
            color: #6b7280;
            max-width: 360px;
        }
        friend-link {
            display: block;
            font-style: normal;
        }
        friend-link h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: .6rem;
            color: #0f0f1a;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        friend-link ul li {
            padding: .25rem 0;
        }
        friend-link ul li a {
            font-size: .9rem;
            color: #2563eb;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #edf2f7;
            font-size: .85rem;
            color: #6b7280;
        }
        @media (max-width: 992px) {
            .content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding: 0 .6rem;
            }
            .container {
                padding: 0 1rem 1.5rem;
                border-radius: 16px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hamburger {
                display: block;
            }
            nav#main-nav {
                display: none;
                width: 100%;
                order: 3;
                padding-top: 1rem;
            }
            nav#main-nav.open {
                display: block;
            }
            nav#main-nav ul {
                flex-direction: column;
                gap: .4rem;
                align-items: stretch;
            }
            nav#main-nav ul li a {
                display: block;
                padding: .7rem 1rem;
                border-radius: 8px;
                background: #f9fafb;
                border-bottom: none;
            }
            nav#main-nav ul li a:hover {
                background: #f3f0ff;
                border-bottom: none;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .feedback-section {
                padding: 1.4rem;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
            .search-form {
                flex-wrap: wrap;
            }
            .search-form input[type="text"] {
                width: 100%;
            }
            .search-form button {
                width: 100%;
            }
            .breadcrumb {
                font-size: .75rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .content-main h2 {
                font-size: 1.4rem;
            }
            .content-main h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 .6rem 1rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        .text-sm {
            font-size: .9rem;
        }
        .mt-1 {
            margin-top: .5rem;
        }
        .mb-1 {
            margin-bottom: .5rem;
        }
        .flex {
            display: flex;
        }
        .gap-1 {
            gap: .5rem;
        }
        .items-center {
            align-items: center;
        }
        .fa-spin {
            animation: fa-spin 2s infinite linear;
        }
        @keyframes fa-spin {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }