* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f8f9fc;
            color: #1e293b;
            line-height: 1.7;
            scroll-behavior: smooth;
        }
        a {
            color: #2a6f97;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1a4b6d;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 16px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a3a5c 100%);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #facc15;
            letter-spacing: 1px;
            text-shadow: 2px 2px 0 #0b1a2e;
            font-style: italic;
        }
        .my-logo i {
            margin-right: 8px;
            color: #f97316;
        }
        .my-logo:hover {
            color: #fde047;
            text-decoration: none;
        }
        .nav-list {
            display: flex;
            gap: 12px;
            list-style: none;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-list a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 40px;
            transition: background 0.25s, color 0.25s;
            font-size: 0.95rem;
        }
        .nav-list a:hover {
            background: #facc15;
            color: #0b1a2e;
            text-decoration: none;
        }
        .nav-list a i {
            margin-right: 6px;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid #facc15;
            color: #facc15;
            font-size: 1.6rem;
            padding: 4px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .hamburger:hover {
            background: #facc15;
            color: #0b1a2e;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-wrapper {
                display: none;
                width: 100%;
                margin-top: 14px;
                flex-direction: column;
                background: #0f2740;
                padding: 16px 12px;
                border-radius: 16px;
            }
            .nav-wrapper.open {
                display: flex;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                gap: 6px;
            }
            .nav-list a {
                display: block;
                width: 100%;
                padding: 10px 16px;
                border-bottom: 1px solid #2a4a6a;
            }
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce3ed;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "▸";
            margin-right: 10px;
            color: #6b7a8f;
        }
        .breadcrumb a {
            color: #2a6f97;
        }
        .breadcrumb .current {
            color: #0b1a2e;
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0b1a2e;
            margin-bottom: 10px;
            line-height: 1.2;
        }
        .article-body h1 i {
            color: #f97316;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: #475569;
            font-size: 0.95rem;
            margin-bottom: 24px;
            border-bottom: 1px solid #dce3ed;
            padding-bottom: 16px;
        }
        .meta-info i {
            margin-right: 6px;
            color: #f97316;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0f2740;
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 6px solid #facc15;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a3a5c;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2a4a6a;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #1e293b;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 28px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 6px solid #facc15;
            padding: 18px 24px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .highlight-box i {
            color: #f97316;
            margin-right: 10px;
        }
        .feature-image {
            margin: 30px 0;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .feature-image figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
            margin-top: 10px;
            font-style: italic;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 24px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.05);
            margin-bottom: 28px;
            border: 1px solid #e9edf4;
        }
        .sidebar-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #0b1a2e;
            margin-bottom: 14px;
            border-bottom: 2px solid #facc15;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card a {
            display: block;
            padding: 6px 0;
            border-bottom: 1px solid #eef2f7;
            font-weight: 500;
        }
        .sidebar-card a i {
            margin-right: 8px;
            color: #f97316;
            width: 18px;
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #dce3ed;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
        }
        .search-form input:focus {
            border-color: #f97316;
        }
        .search-form button {
            background: #f97316;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 20px;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-form button:hover {
            background: #e05d0a;
        }
        .comment-box,
        .rating-box {
            background: #ffffff;
            border-radius: 20px;
            padding: 28px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            margin-top: 40px;
            border: 1px solid #e9edf4;
        }
        .comment-box h3,
        .rating-box h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #0b1a2e;
            margin-bottom: 18px;
        }
        .comment-box textarea,
        .comment-box input {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #dce3ed;
            border-radius: 14px;
            font-size: 1rem;
            margin-bottom: 14px;
            outline: none;
            transition: 0.2s;
            font-family: inherit;
        }
        .comment-box textarea:focus,
        .comment-box input:focus {
            border-color: #f97316;
        }
        .comment-box textarea {
            min-height: 110px;
            resize: vertical;
        }
        .comment-box button,
        .rating-box button {
            background: #2a6f97;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 32px;
            font-size: 1rem;
            cursor: pointer;
            font-weight: 600;
            transition: 0.2s;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #1a4b6d;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 6px;
            margin: 12px 0 20px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2.2rem;
            color: #d1d5db;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #facc15;
        }
        .rating-box .score-display {
            font-size: 1.2rem;
            font-weight: 600;
            color: #0b1a2e;
            margin-top: 8px;
        }
        .site-footer {
            background: #0b1a2e;
            color: #cbd5e1;
            padding: 40px 0 24px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .site-footer h4 {
            color: #facc15;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .site-footer a {
            color: #a0b8d0;
        }
        .site-footer a:hover {
            color: #facc15;
        }
        friend-link {
            display: block;
            background: #0f2740;
            padding: 18px 22px;
            border-radius: 14px;
            margin: 20px 0 12px;
            line-height: 2;
        }
        friend-link a {
            color: #a0c4e8;
            margin: 0 8px;
            font-weight: 500;
        }
        friend-link a:hover {
            color: #facc15;
        }
        .copyright {
            border-top: 1px solid #1f3a54;
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: #869bb0;
        }
        .copyright i {
            margin: 0 4px;
        }
        @media (max-width: 576px) {
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 14px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        .schema-hidden {
            display: none;
        }