*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #faf9f6;
            color: #1e1e2a;
            line-height: 1.8;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #c94b1f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #9e3a16;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(145deg, #0f1a2e, #1a2a44);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(255, 210, 0, 0.15);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #aac4e0;
            color: #aac4e0;
            letter-spacing: 1px;
            font-weight: 400;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #e8edf5;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            display: block;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #ffd200;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #f0ede6;
            padding: 12px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #e0dcd2;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 10px;
            color: #999;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #6b5e4a;
        }
        .breadcrumb .current {
            color: #1e1e2a;
            font-weight: 600;
        }
        main {
            flex: 1;
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 12px;
            color: #0f1a2e;
        }
        .article-body h1 span {
            background: linear-gradient(135deg, #c94b1f, #f7971e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-body .meta {
            color: #6b6b7a;
            font-size: 0.9rem;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .article-body .meta i {
            margin-right: 4px;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-bottom: 6px;
            border-bottom: 3px solid #f0e6d6;
            color: #1a2a44;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 28px 0 12px;
            color: #2c3e5a;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: #3d4f6f;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2c2c3a;
        }
        .article-body p b,
        .article-body p strong {
            color: #0f1a2e;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body .feature-box {
            background: #f5f0e8;
            border-left: 5px solid #f7971e;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .feature-box p:last-child {
            margin-bottom: 0;
        }
        .img-wrap {
            margin: 30px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
            background: #e8e4dc;
        }
        .img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .img-wrap figcaption {
            padding: 10px 16px;
            font-size: 0.85rem;
            color: #5a5a6a;
            background: #faf9f6;
            border-top: 1px solid #e8e4dc;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 22px 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #edeae2;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #0f1a2e;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0ede6;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-size: 0.95rem;
            display: block;
            padding: 4px 0;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 10px 0 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid #e0dcd2;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
            background: #faf9f6;
        }
        .search-form input:focus {
            border-color: #f7971e;
        }
        .search-form button {
            background: #1a2a44;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0 20px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: #0f1a2e;
        }
        .feedback-section {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 2px solid #edeae2;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #edeae2;
        }
        .feedback-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0f1a2e;
        }
        .feedback-card textarea,
        .feedback-card input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0dcd2;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.25s;
            background: #faf9f6;
            margin-bottom: 12px;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: #f7971e;
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card .btn {
            background: #f7971e;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 28px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card .btn:hover {
            background: #d97f0e;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin-bottom: 14px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f7b731;
        }
        .star-rating label i {
            font-size: inherit;
        }
        footer {
            background: #0f1a2e;
            color: #c8d4e6;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 4px solid #f7971e;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        @media (max-width: 768px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        footer h4 {
            color: #ffd200;
            font-size: 1.05rem;
            margin-bottom: 12px;
            font-weight: 700;
        }
        footer a {
            color: #aac4e0;
        }
        footer a:hover {
            color: #ffd200;
            text-decoration: none;
        }
        footer .copyright {
            border-top: 1px solid #2a3f5a;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #8899b0;
        }
        friend-link {
            display: block;
            background: #1a2a44;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 12px 0;
            font-size: 0.95rem;
            line-height: 2;
        }
        friend-link a {
            margin: 0 6px;
            padding: 4px 8px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.05);
            display: inline-block;
        }
        friend-link a:hover {
            background: rgba(255, 210, 0, 0.12);
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a2a44;
                padding: 12px 0 16px;
                border-radius: 0 0 16px 16px;
                margin-top: 12px;
            }
            .nav-list li a {
                padding: 10px 20px;
                border-radius: 0;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 14px;
            }
            .breadcrumb ol {
                font-size: 0.75rem;
                gap: 4px 8px;
            }
        }
        @media (max-width: 480px) {
            .article-body h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .feedback-card {
                padding: 16px;
            }
        }
        .highlight {
            background: #fff8e0;
            padding: 0 4px;
            border-radius: 4px;
        }
        .badge {
            display: inline-block;
            background: #f7971e;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .text-sm {
            font-size: 0.9rem;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-10 {
            margin-bottom: 10px;
        }
        .scroll-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            background: #1a2a44;
            color: #ffd200;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: background 0.25s, transform 0.2s;
            border: none;
            z-index: 999;
        }
        .scroll-top:hover {
            background: #f7971e;
            color: #0f1a2e;
            transform: translateY(-4px);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .article-body th {
            background: #1a2a44;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-body td {
            padding: 10px 16px;
            border-bottom: 1px solid #edeae2;
            background: #faf9f6;
        }
        .article-body tr:last-child td {
            border-bottom: none;
        }
        .article-body tr:hover td {
            background: #f5f0e8;
        }