* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f7f9fc;
            color: #1a1e2b;
            line-height: 1.7;
            font-size: 1.05rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a2f44 100%);
            padding: 1.2rem 0;
            border-bottom: 3px solid #f5c842;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #f5c842;
            text-decoration: none;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(245, 200, 66, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            color: #ffd866;
        }
        .my-logo span {
            color: #ffffff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e0e8f0;
            text-decoration: none;
            padding: 0.5rem 1.1rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.25s;
        }
        nav a:hover,
        nav a:focus {
            background: #f5c842;
            color: #0b1a2e;
            outline: none;
        }
        .breadcrumb {
            background: #ffffff;
            padding: 0.7rem 0;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #94a3b8;
            margin-right: 0.8rem;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2563eb;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 500;
        }
        main {
            padding: 2.5rem 0 3rem;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #0b1a2e;
            line-height: 1.2;
            margin-bottom: 0.8rem;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0f2a40;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid #f5c842;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a3a55;
            margin-top: 2rem;
            margin-bottom: 0.7rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2c4a6e;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: #2d3a4a;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            padding: 1rem 0 1.5rem;
            color: #64748b;
            font-size: 0.95rem;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 1.8rem;
        }
        .meta-info i {
            margin-right: 0.4rem;
            color: #f5c842;
        }
        .featured-img {
            width: 100%;
            border-radius: 16px;
            margin: 1.5rem 0 2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            max-height: 500px;
            object-fit: cover;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .content-area {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #ffffff;
            border-radius: 14px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #edf2f7;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-left: 3px solid #f5c842;
            padding-left: 0.7rem;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        .sidebar-card a {
            color: #2563eb;
            text-decoration: none;
            font-size: 0.95rem;
        }
        .sidebar-card a:hover {
            text-decoration: underline;
        }
        .highlight-box {
            background: #f0f7ff;
            border-radius: 12px;
            padding: 1.5rem 1.8rem;
            margin: 1.8rem 0;
            border-left: 5px solid #2563eb;
        }
        .highlight-box strong {
            color: #0b1a2e;
        }
        .tip-box {
            background: #fffbeb;
            border-radius: 12px;
            padding: 1.5rem 1.8rem;
            margin: 1.8rem 0;
            border-left: 5px solid #f5c842;
        }
        .inline-link {
            color: #2563eb;
            font-weight: 500;
            text-decoration: none;
            border-bottom: 1px dotted #94a3b8;
        }
        .inline-link:hover {
            color: #1d4ed8;
            border-bottom: 1px solid #1d4ed8;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            margin: 1.2rem 0 1.8rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            transition: border 0.2s;
            background: #ffffff;
        }
        .search-form input:focus {
            border-color: #f5c842;
            outline: none;
        }
        .search-form button {
            background: #f5c842;
            border: none;
            border-radius: 40px;
            padding: 0 1.8rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            color: #0b1a2e;
        }
        .search-form button:hover {
            background: #e6b93a;
            transform: scale(0.97);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        .feedback-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.8rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #edf2f7;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fafcff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #f5c842;
            outline: none;
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card button {
            background: #0b1a2e;
            color: #ffffff;
            border: none;
            padding: 0.8rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #1a2f44;
            transform: scale(0.97);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d1d5db;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.2s;
            color: #d1d5db;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c842;
        }
        footer {
            background: #0b1a2e;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 3px solid #f5c842;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        footer h4 {
            color: #f5c842;
            margin-top: 0;
            font-size: 1.1rem;
        }
        footer a {
            color: #94b8d9;
            text-decoration: none;
        }
        footer a:hover {
            color: #f5c842;
        }
        friend-link {
            display: block;
            margin-top: 0.8rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.4rem;
            padding: 0.3rem 0.8rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(245, 200, 66, 0.15);
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #1e3a5a;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            text-align: center;
            font-size: 0.9rem;
            color: #8ca3b8;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 1rem;
                gap: 0.3rem;
            }
            nav.active {
                display: flex;
            }
            nav a {
                padding: 0.6rem 1rem;
                border-radius: 10px;
                width: 100%;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr;
            }
            .meta-info {
                flex-direction: column;
                gap: 0.6rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 1rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 0.7rem;
            }
        }
        .emoji-big {
            font-size: 1.3em;
        }
        .tag {
            display: inline-block;
            background: #eef2f6;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            color: #475569;
            margin-right: 0.3rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #edf2f7;
        }
        th {
            background: #f0f4fa;
            font-weight: 600;
            color: #0b1a2e;
        }
        tr:last-child td {
            border-bottom: none;
        }