* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Arial, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 20px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.05);
            border-radius: 24px;
            padding: 20px 30px 40px;
            margin-top: 20px;
            margin-bottom: 40px;
        }
        header {
            padding: 20px 0 10px;
            border-bottom: 2px solid #eef2f7;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0d1b2a;
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #5a6a7a;
            color: #5a6a7a;
            display: block;
            letter-spacing: 0.3px;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #1e2a3a;
            background: none;
            border: none;
            padding: 8px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #eef2f7;
        }
        nav {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            text-decoration: none;
            color: #2c3e50;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 30px;
            transition: all 0.25s;
            font-size: 0.95rem;
        }
        nav a:hover {
            background: #1e3c72;
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-active {
            background: #eef2f7;
            color: #1e3c72;
        }
        .breadcrumb {
            padding: 16px 0 8px;
            font-size: 0.85rem;
            color: #5a6a7a;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
            background: #f9fafc;
            border-radius: 12px;
            padding: 12px 18px;
            margin: 16px 0 24px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 10px;
            color: #b0c4d8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2a5298;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin: 10px 0 20px;
            color: #0b1a2e;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 4px solid #e8edf5;
            color: #0f2842;
        }
        h3 {
            font-size: 1.45rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #1a3350;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 24px 0 10px;
            color: #2a4a6a;
        }
        p {
            margin: 0 0 18px;
            font-size: 1.05rem;
            color: #2c3e50;
        }
        .content-section {
            margin: 24px 0;
        }
        .highlight-box {
            background: #f0f5fe;
            border-left: 6px solid #2a5298;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .emoji-big {
            font-size: 1.6rem;
            margin-right: 6px;
        }
        .last-updated {
            display: inline-block;
            background: #eef2f7;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #4a5a6a;
            margin: 8px 0 20px;
        }
        .featured-image {
            width: 100%;
            border-radius: 20px;
            margin: 28px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            display: block;
            max-height: 500px;
            object-fit: cover;
        }
        figure {
            margin: 28px 0;
        }
        figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #6a7a8a;
            margin-top: 8px;
            font-style: italic;
        }
        .link-list {
            background: #f8faff;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 28px 0;
            border: 1px solid #e2eaf2;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px 24px;
        }
        .link-list li {
            padding: 6px 0;
        }
        .link-list a {
            color: #1e3c72;
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s;
        }
        .link-list a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        .link-list a i {
            font-size: 0.8rem;
            color: #2a5298;
        }
        .form-card {
            background: #f9fbfe;
            border: 1px solid #e2eaf2;
            border-radius: 20px;
            padding: 28px 32px;
            margin: 32px 0;
        }
        .form-card h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            font-size: 0.95rem;
            color: #1e2a3a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce4ec;
            border-radius: 12px;
            font-size: 1rem;
            transition: border 0.25s;
            background: #fff;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #2a5298;
            box-shadow: 0 0 0 4px rgba(42, 82, 152, 0.08);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            padding: 12px 32px;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            background: #1e3c72;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            background: #2a5298;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 60, 114, 0.25);
        }
        .btn-secondary {
            background: #e8edf5;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #d0dae8;
            box-shadow: none;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            cursor: pointer;
            color: #d0dae8;
            transition: color 0.15s;
        }
        .rating-stars i.active {
            color: #f1c40f;
        }
        .rating-stars i:hover,
        .rating-stars i.hover {
            color: #f1c40f;
        }
        footer {
            margin-top: 48px;
            padding-top: 28px;
            border-top: 2px solid #eef2f7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 24px;
        }
        footer a {
            color: #2a5298;
            text-decoration: none;
        }
        footer a:hover {
            text-decoration: underline;
        }
        friend-link {
            display: block;
            padding: 16px 20px;
            background: #f0f5fe;
            border-radius: 16px;
            margin: 20px 0;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
        }
        .copyright {
            text-align: center;
            padding: 20px 0 8px;
            color: #5a6a7a;
            font-size: 0.9rem;
            border-top: 1px solid #e8edf5;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 12px;
            }
            .container {
                padding: 16px 16px 30px;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 6px;
                padding: 16px 0 8px;
                border-top: 1px solid #eef2f7;
                margin-top: 12px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 18px;
                width: 100%;
                border-radius: 10px;
            }
            .link-list ul {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .form-card {
                padding: 20px;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 10px 14px;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                padding: 20px 24px;
            }
            .link-list ul {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .gap-8 {
            gap: 8px;
        }
        .text-muted {
            color: #6a7a8a;
            font-size: 0.9rem;
        }
        .badge {
            display: inline-block;
            background: #e8edf5;
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #1e3c72;
        }
        blockquote {
            border-left: 4px solid #2a5298;
            padding: 12px 20px;
            margin: 20px 0;
            background: #f8faff;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2c3e50;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e2eaf2;
        }
        th {
            background: #f0f5fe;
            font-weight: 600;
            color: #0f2842;
        }
        tr:hover {
            background: #f8faff;
        }