* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f5f7fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #1d4ed8;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0f3b9e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .site-header {
            background: #ffffff;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            padding: 18px 28px;
            margin: 20px auto 16px;
            max-width: 1280px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #1e3a5f, #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo small {
            font-size: 0.75rem;
            font-weight: 400;
            -webkit-text-fill-color: #64748b;
            display: block;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            padding: 8px 12px;
            font-size: 1.5rem;
            color: #1e293b;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #2563eb;
            color: #2563eb;
        }
        .nav-toggle .fa-times {
            display: none;
        }
        .nav-toggle.active .fa-bars {
            display: none;
        }
        .nav-toggle.active .fa-times {
            display: inline;
        }
        .primary-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 20px;
        }
        .primary-nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .primary-nav a:hover {
            border-bottom-color: #2563eb;
            text-decoration: none;
        }
        .breadcrumb {
            max-width: 1280px;
            margin: 0 auto 12px;
            font-size: 0.85rem;
            color: #64748b;
            padding: 0 8px;
        }
        .breadcrumb a {
            color: #475569;
        }
        .breadcrumb a:hover {
            color: #1d4ed8;
        }
        .breadcrumb span {
            margin: 0 4px;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto 40px;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
        }
        .main-content {
            background: #ffffff;
            border-radius: 20px;
            padding: 32px 36px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #ffffff;
            border-radius: 20px;
            padding: 24px 22px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 20px;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0f172a;
        }
        h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 14px;
            color: #1e293b;
            border-left: 5px solid #2563eb;
            padding-left: 16px;
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 28px;
            margin-bottom: 10px;
            color: #334155;
        }
        h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-top: 20px;
            margin-bottom: 6px;
            color: #475569;
        }
        p {
            margin-bottom: 16px;
        }
        .update-badge {
            display: inline-block;
            background: #dbeafe;
            color: #1e40af;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 18px;
        }
        .hero-img-wrap {
            margin: 20px 0 28px;
            border-radius: 16px;
            overflow: hidden;
            background: #eef2ff;
            position: relative;
        }
        .hero-img-wrap img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .hero-img-wrap figcaption {
            font-size: 0.85rem;
            color: #64748b;
            padding: 10px 16px;
            background: #f8fafc;
            border-top: 1px solid #e2e8f0;
        }
        .link-group {
            background: #f8fafc;
            border-radius: 14px;
            padding: 18px 22px;
            margin: 24px 0;
            border: 1px solid #e2e8f0;
        }
        .link-group h4 {
            margin-top: 0;
        }
        .link-group ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
        }
        .link-group ul li a {
            font-weight: 500;
        }
        .search-box {
            background: #f1f5f9;
            border-radius: 40px;
            padding: 4px 4px 4px 20px;
            display: flex;
            align-items: center;
            border: 1px solid #e2e8f0;
            transition: 0.2s;
            margin: 20px 0;
        }
        .search-box:focus-within {
            border-color: #2563eb;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 12px 0;
            font-size: 0.95rem;
            outline: none;
        }
        .search-box button {
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.9rem;
        }
        .search-box button:hover {
            background: #1d4ed8;
        }
        .interact-area {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 2px solid #e2e8f0;
        }
        .interact-area h3 {
            margin-top: 0;
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form select,
        .rating-form input {
            padding: 12px 16px;
            border: 1px solid #cbd5e1;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            transition: 0.2s;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form select:focus {
            border-color: #2563eb;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            outline: none;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: 0.2s;
            align-self: flex-start;
        }
        .btn:hover {
            background: #1d4ed8;
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: #2563eb;
            border: 2px solid #2563eb;
        }
        .btn-outline:hover {
            background: #2563eb;
            color: #fff;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 12px;
            border-left: 4px solid #2563eb;
            padding-left: 12px;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar ul li a {
            font-weight: 500;
        }
        .site-footer {
            max-width: 1280px;
            margin: 0 auto 30px;
            background: #ffffff;
            border-radius: 20px;
            padding: 28px 32px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
        }
        .footer-col {
            flex: 1 1 200px;
        }
        .footer-col h4 {
            margin-top: 0;
            font-size: 1rem;
            color: #0f172a;
        }
        friend-link {
            display: block;
            margin: 6px 0;
        }
        friend-link a {
            color: #475569;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: #1d4ed8;
        }
        .copyright {
            margin-top: 24px;
            padding-top: 18px;
            border-top: 1px solid #e2e8f0;
            font-size: 0.85rem;
            color: #94a3b8;
            text-align: center;
        }
        @media (max-width: 900px) {
            .container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .main-content {
                padding: 20px 18px;
            }
            .site-header {
                padding: 14px 18px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .link-group ul {
                flex-direction: column;
                gap: 6px;
            }
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding-top: 16px;
                gap: 4px;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 8px 0;
                border-bottom: none;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 8px;
            }
            .main-content {
                padding: 16px 14px;
            }
            .search-box {
                flex-wrap: wrap;
                padding: 4px;
                background: #fff;
                border-radius: 20px;
            }
            .search-box input {
                width: 100%;
                padding: 10px 14px;
            }
            .search-box button {
                width: 100%;
                border-radius: 20px;
                margin-top: 4px;
            }
            .btn {
                width: 100%;
                text-align: center;
            }
        }