*,
        *::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, BlinkMacSystemFont, sans-serif;
            background: #f5f7fa;
            color: #1a2a3a;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #e85d2c;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #c0441e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a3a5c 0%, #2a4a6c 100%);
            padding: 16px 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;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
            color: #ffd166;
        }
        .my-logo .logo-sub {
            font-size: 0.65rem;
            font-weight: 400;
            display: block;
            letter-spacing: 2px;
            color: #ffd166;
            margin-top: -4px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .primary-nav {
            display: flex;
            gap: 8px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        .primary-nav a {
            color: rgba(255, 255, 255, 0.88);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        .primary-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #ffd166;
            text-decoration: none;
        }
        .primary-nav a .fa {
            margin-right: 6px;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid #e9edf2;
            padding: 10px 0;
            font-size: 0.85rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #aab;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #4a6a8a;
        }
        .breadcrumb .current {
            color: #1a3a5c;
            font-weight: 600;
        }
        .main-wrap {
            padding: 32px 0 48px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 36px;
        }
        .content-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #1a3a5c;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .content-body h1 .highlight {
            color: #e85d2c;
        }
        .last-updated {
            display: inline-block;
            background: #eef2f7;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: #5a6a7a;
            margin-bottom: 20px;
        }
        .content-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1a3a5c;
            margin-top: 48px;
            margin-bottom: 16px;
            border-bottom: 3px solid #e85d2c;
            padding-bottom: 8px;
        }
        .content-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #2a4a6c;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .content-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #3a5a7a;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .content-body p {
            margin-bottom: 16px;
            color: #2a3a4a;
        }
        .content-body ul,
        .content-body ol {
            margin: 12px 0 20px 24px;
        }
        .content-body li {
            margin-bottom: 8px;
        }
        .content-body .feature-box {
            background: linear-gradient(145deg, #f0f4fa, #fff);
            border-left: 4px solid #e85d2c;
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .content-body .feature-box strong {
            color: #1a3a5c;
        }
        .content-img-wrap {
            margin: 28px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            background: #eef2f7;
        }
        .content-img-wrap img {
            width: 100%;
            object-fit: cover;
        }
        .content-img-wrap figcaption {
            padding: 10px 18px;
            font-size: 0.85rem;
            color: #5a6a7a;
            background: #f8fafc;
            border-top: 1px solid #e9edf2;
        }
        .sidebar {
            position: sticky;
            top: 96px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 22px 20px;
            margin-bottom: 24px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e9edf2;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1a3a5c;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-link-list li {
            margin-bottom: 8px;
            border-bottom: 1px solid #f0f2f5;
            padding-bottom: 8px;
        }
        .sidebar-link-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #2a4a6c;
            font-weight: 500;
            font-size: 0.9rem;
        }
        .sidebar-link-list a:hover {
            color: #e85d2c;
            text-decoration: none;
        }
        .sidebar-link-list .fa {
            color: #e85d2c;
            font-size: 0.75rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 16px 0 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid #dce2ea;
            border-radius: 30px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
            background: #f8fafc;
        }
        .search-form input:focus {
            border-color: #e85d2c;
            background: #fff;
        }
        .search-form button {
            background: #e85d2c;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 20px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #c0441e;
            transform: scale(0.97);
        }
        .comment-section,
        .rating-section {
            background: #fff;
            border-radius: 14px;
            padding: 24px 22px;
            margin-top: 36px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e9edf2;
        }
        .comment-section h3,
        .rating-section h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #1a3a5c;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce2ea;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            margin-bottom: 12px;
            resize: vertical;
            transition: border 0.2s;
            background: #f8fafc;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: #e85d2c;
            background: #fff;
            outline: none;
        }
        .comment-form .btn-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: #e85d2c;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 28px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            font-size: 0.95rem;
        }
        .btn-primary:hover {
            background: #c0441e;
            transform: scale(0.97);
        }
        .btn-outline {
            background: transparent;
            color: #1a3a5c;
            border: 2px solid #dce2ea;
            border-radius: 30px;
            padding: 8px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, border 0.2s;
            font-size: 0.95rem;
        }
        .btn-outline:hover {
            background: #f0f4fa;
            border-color: #b0c0d0;
        }
        .star-group {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 8px 0 16px;
        }
        .star-group input {
            display: none;
        }
        .star-group label {
            font-size: 2rem;
            color: #dce2ea;
            cursor: pointer;
            transition: color 0.15s, transform 0.1s;
        }
        .star-group label:hover,
        .star-group label:hover~label,
        .star-group input:checked~label {
            color: #ffb800;
            transform: scale(1.05);
        }
        friend-link {
            display: block;
            padding: 28px 0 12px;
            border-top: 2px solid #e9edf2;
            margin-top: 32px;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: #1a3a5c;
            margin-bottom: 12px;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            list-style: none;
            padding: 0;
        }
        friend-link .fl-list a {
            color: #4a6a8a;
            font-size: 0.9rem;
        }
        friend-link .fl-list a:hover {
            color: #e85d2c;
        }
        .site-footer {
            background: #1a3a5c;
            color: rgba(255, 255, 255, 0.85);
            padding: 28px 0 22px;
            margin-top: 20px;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 8px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .sidebar-card {
                margin-bottom: 0;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 8px;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 10px 14px;
                border-radius: 8px;
            }
            .content-body h1 {
                font-size: 1.8rem;
            }
            .content-body h2 {
                font-size: 1.4rem;
            }
            .content-body h3 {
                font-size: 1.15rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo .logo-sub {
                font-size: 0.55rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .content-body h1 {
                font-size: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .star-group label {
                font-size: 1.6rem;
            }
            .comment-form .btn-row {
                flex-direction: column;
            }
            .comment-form .btn-row button {
                width: 100%;
            }
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .text-sm {
            font-size: 0.88rem;
        }
        .text-muted {
            color: #5a6a7a;
        }
        .fw-600 {
            font-weight: 600;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-4 {
            gap: 4px;
        }
        .rounded-full {
            border-radius: 999px;
        }