*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f5f7fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #0055b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
            border-radius: 28px;
            padding: 20px 24px 40px;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0 16px;
            border-bottom: 2px solid #eef0f6;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #0a2351, #1d4ed8);
            -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 a:hover {
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #4a5568;
            display: block;
            -webkit-text-fill-color: #4a5568;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #1e2b4f;
            border-radius: 8px;
            font-size: 1.6rem;
            padding: 4px 12px;
            cursor: pointer;
            color: #1e2b4f;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #1e2b4f;
            color: #fff;
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 18px;
            align-items: center;
        }
        nav a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 6px 2px;
            color: #1e2b4f;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        nav a:hover {
            border-bottom-color: #1d4ed8;
            color: #1d4ed8;
            text-decoration: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 0.85rem;
            padding: 12px 0 8px;
            color: #4a5568;
            width: 100%;
        }
        .breadcrumb a {
            color: #1d4ed8;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span.sep {
            color: #a0aec0;
        }
        .breadcrumb .current {
            color: #2d3748;
            font-weight: 600;
        }
        .hero {
            padding: 28px 0 16px;
            text-align: center;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(145deg, #0a2351, #1d4ed8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .hero p {
            font-size: 1.15rem;
            color: #2d3748;
            max-width: 780px;
            margin: 0 auto 12px;
        }
        .last-updated {
            display: inline-block;
            background: #edf2f7;
            border-radius: 40px;
            padding: 6px 20px;
            font-size: 0.85rem;
            color: #2d3748;
            font-weight: 500;
        }
        .last-updated i {
            margin-right: 6px;
            color: #1d4ed8;
        }
        .search-section {
            background: #f0f4fe;
            border-radius: 20px;
            padding: 24px 28px;
            margin: 24px 0 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }
        .search-section label {
            font-weight: 700;
            font-size: 1.1rem;
            color: #0a2351;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-section form {
            flex: 1;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            min-width: 200px;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 160px;
            padding: 12px 18px;
            border: 2px solid #d0d9e8;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #1d4ed8;
            box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
        }
        .search-section button {
            background: #0a2351;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 32px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-section button:hover {
            background: #1d4ed8;
            transform: scale(1.02);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px 40px;
            margin: 16px 0 36px;
        }
        .main-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0a2351;
            margin: 40px 0 16px;
            border-left: 6px solid #1d4ed8;
            padding-left: 16px;
        }
        .main-content h2:first-of-type {
            margin-top: 8px;
        }
        .main-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1e2b4f;
            margin: 28px 0 12px;
        }
        .main-content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2d3748;
            margin: 20px 0 8px;
        }
        .main-content p {
            margin-bottom: 16px;
            color: #2d3748;
        }
        .main-content ul,
        .main-content ol {
            margin: 12px 0 20px 24px;
            color: #2d3748;
        }
        .main-content li {
            margin-bottom: 6px;
        }
        .main-content strong {
            color: #0a2351;
        }
        .main-content .highlight-box {
            background: #f0f4fe;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 24px 0;
            border-left: 6px solid #1d4ed8;
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            background: #f7f9fc;
            padding: 10px 16px;
            font-size: 0.9rem;
            color: #4a5568;
            font-style: italic;
        }
        .sidebar {
            background: #f8faff;
            border-radius: 20px;
            padding: 20px 22px;
            border: 1px solid #e2e8f0;
            align-self: start;
            position: sticky;
            top: 20px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #0a2351;
            margin-bottom: 16px;
            border-bottom: 3px solid #1d4ed8;
            padding-bottom: 8px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar li {
            margin-bottom: 10px;
        }
        .sidebar a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            background: #ffffff;
            border-radius: 12px;
            border: 1px solid #e9edf4;
            font-weight: 500;
            color: #1e2b4f;
            transition: 0.2s;
        }
        .sidebar a:hover {
            background: #eef4ff;
            border-color: #1d4ed8;
            text-decoration: none;
            transform: translateX(4px);
        }
        .sidebar a i {
            color: #1d4ed8;
            width: 20px;
            text-align: center;
        }
        .feedback-section {
            margin: 40px 0 20px;
            padding: 24px 28px;
            background: #f7f9fd;
            border-radius: 20px;
            border: 1px solid #e2e8f0;
        }
        .feedback-section h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0a2351;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px 32px;
        }
        .feedback-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 18px 20px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .feedback-card label {
            font-weight: 600;
            display: block;
            margin-bottom: 8px;
            color: #1e2b4f;
        }
        .feedback-card textarea,
        .feedback-card input[type="number"],
        .feedback-card input[type="text"] {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid #d0d9e8;
            border-radius: 12px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
            font-family: inherit;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: #1d4ed8;
            box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .star-group {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            margin: 6px 0 10px;
        }
        .feedback-card .star-group i.active {
            color: #f59e0b;
        }
        .feedback-card button {
            background: #0a2351;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: 0.2s;
            margin-top: 8px;
        }
        .feedback-card button:hover {
            background: #1d4ed8;
            transform: scale(1.02);
        }
        .feedback-card .rating-value {
            font-size: 1rem;
            color: #4a5568;
            margin-left: 8px;
        }
        footer {
            margin-top: 48px;
            padding-top: 28px;
            border-top: 2px solid #eef0f6;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }
        .footer-grid h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #0a2351;
            margin-bottom: 12px;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid li {
            margin-bottom: 8px;
        }
        .footer-grid a {
            color: #2d3748;
            font-weight: 500;
        }
        .footer-grid a:hover {
            color: #1d4ed8;
        }
        friend-link {
            display: block;
            background: #f0f4fe;
            border-radius: 16px;
            padding: 16px 20px;
            margin: 16px 0 20px;
            font-weight: 500;
        }
        friend-link a {
            color: #1d4ed8;
            font-weight: 600;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding: 20px 0 8px;
            font-size: 0.9rem;
            color: #4a5568;
            border-top: 1px solid #e2e8f0;
            margin-top: 20px;
        }
        .copyright strong {
            color: #0a2351;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .container {
                padding: 12px 16px 28px;
            }
        }
        @media (max-width: 680px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 0 8px;
                gap: 4px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid #e9edf4;
            }
            .search-section {
                flex-direction: column;
                align-items: stretch;
            }
            .search-section form {
                flex-direction: column;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .feedback-card .star-group {
                font-size: 1.4rem;
            }
        }
        .emoji-big {
            font-size: 1.4em;
            display: inline-block;
        }
        .text-accent {
            color: #1d4ed8;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .fw-700 {
            font-weight: 700;
        }