*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fa;
            color: #1a1a2e;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a { color: #e10600; text-decoration: none; transition: color 0.2s; }
        a:hover { color: #b00500; text-decoration: underline; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
        .site-header {
            background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 100%);
            color: #fff;
            padding: 16px 0;
            border-bottom: 4px solid #e10600;
            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: 900;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .my-logo i { color: #e10600; font-size: 2rem; }
        .my-logo span { background: linear-gradient(135deg, #fff, #e10600); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .my-logo:hover { text-decoration: none; }
        .nav-wrapper { display: flex; align-items: center; gap: 12px; }
        .main-nav { display: flex; gap: 8px; flex-wrap: wrap; }
        .main-nav a {
            color: #ddd;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            border: 1px solid transparent;
        }
        .main-nav a:hover {
            background: rgba(225,6,0,0.15);
            border-color: #e10600;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.8rem;
            color: #fff;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover { background: rgba(255,255,255,0.1); }
        .breadcrumb {
            background: #fff;
            padding: 10px 0;
            border-bottom: 1px solid #e9ecef;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb li+li::before { content: "›"; margin-right: 6px; color: #999; }
        .breadcrumb a { color: #e10600; }
        .breadcrumb .active { color: #666; }
        .main-content { flex: 1; padding: 40px 0; }
        .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: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 12px;
            color: #0a0a1a;
        }
        .article-body h1 i { color: #e10600; margin-right: 12px; }
        .article-body .subhead {
            font-size: 1.15rem;
            color: #555;
            margin-bottom: 30px;
            border-left: 4px solid #e10600;
            padding-left: 18px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin: 48px 0 16px 0;
            color: #0a0a1a;
            border-bottom: 3px solid #e10600;
            padding-bottom: 8px;
        }
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin: 32px 0 12px 0;
            color: #1a1a3e;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 24px 0 8px 0;
            color: #2a2a4e;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #222;
        }
        .article-body ul, .article-body ol {
            margin: 14px 0 22px 28px;
            font-size: 1.05rem;
        }
        .article-body li { margin-bottom: 8px; }
        .article-body strong { color: #0a0a1a; font-weight: 700; }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #fef3f2, #fff);
            border-left: 6px solid #e10600;
            padding: 20px 26px;
            border-radius: 8px;
            margin: 24px 0;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .article-body .highlight-box i { color: #e10600; margin-right: 8px; }
        .featured-img-wrapper {
            margin: 30px 0 24px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0,0,0,0.1);
        }
        .featured-img-wrapper img {
            width: 100%;
            display: block;
            transition: transform 0.4s;
        }
        .featured-img-wrapper img:hover { transform: scale(1.02); }
        .featured-img-wrapper figcaption {
            background: #fff;
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #666;
            border-top: 1px solid #eee;
        }
        .sidebar {
            background: #fff;
            border-radius: 12px;
            padding: 24px 20px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
            border: 1px solid #e9ecef;
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0a0a1a;
            border-bottom: 2px solid #e10600;
            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;
            border-radius: 8px;
            background: #f8f9fa;
            transition: all 0.2s;
            font-size: 0.95rem;
        }
        .sidebar a:hover { background: #e10600; color: #fff; text-decoration: none; }
        .sidebar a i { width: 20px; text-align: center; }
        .search-section {
            background: #fff;
            border-radius: 12px;
            padding: 28px 30px;
            margin: 40px 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            border: 1px solid #e9ecef;
        }
        .search-section h2 { font-size: 1.5rem; margin-bottom: 18px; border: none; }
        .search-form { display: flex; gap: 12px; flex-wrap: wrap; }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            transition: border 0.3s;
            outline: none;
        }
        .search-form input:focus { border-color: #e10600; }
        .search-form button {
            padding: 14px 36px;
            background: #e10600;
            color: #fff;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover { background: #b00500; transform: scale(1.02); }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 40px 0;
        }
        @media (max-width: 768px) {
            .feedback-grid { grid-template-columns: 1fr; }
        }
        .feedback-card {
            background: #fff;
            border-radius: 12px;
            padding: 28px 30px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            border: 1px solid #e9ecef;
        }
        .feedback-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
        .feedback-card h3 i { color: #e10600; }
        .feedback-card form { display: flex; flex-direction: column; gap: 14px; }
        .feedback-card input, .feedback-card textarea, .feedback-card select {
            padding: 12px 16px;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            font-size: 0.95rem;
            transition: border 0.3s;
            outline: none;
            font-family: inherit;
        }
        .feedback-card input:focus, .feedback-card textarea:focus, .feedback-card select:focus {
            border-color: #e10600;
        }
        .feedback-card textarea { min-height: 100px; resize: vertical; }
        .feedback-card button {
            padding: 12px 28px;
            background: #e10600;
            color: #fff;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            align-self: flex-start;
        }
        .feedback-card button:hover { background: #b00500; transform: scale(1.02); }
        .star-rating { display: flex; gap: 6px; font-size: 1.6rem; color: #ffc107; cursor: pointer; }
        .star-rating i { transition: transform 0.2s; }
        .star-rating i:hover { transform: scale(1.2); }
        .friend-links-section {
            background: #0a0a1a;
            color: #fff;
            padding: 40px 0;
            margin-top: 40px;
        }
        friend-link {
            display: block;
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }
        friend-link h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link h3 i { color: #e10600; }
        friend-link .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            list-style: none;
            padding: 0;
        }
        friend-link .link-list a {
            color: #ffb3b3;
            font-size: 0.95rem;
            transition: color 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        friend-link .link-list a:hover { color: #fff; text-decoration: underline; }
        .site-footer {
            background: #0a0a1a;
            color: #aaa;
            padding: 20px 0;
            border-top: 2px solid #e10600;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .container { display: flex; flex-direction: column; gap: 6px; }
        .site-footer a { color: #ffb3b3; }
        .site-footer a:hover { color: #fff; }
        @media (max-width: 768px) {
            .header-inner { flex-wrap: wrap; }
            .my-logo { font-size: 1.4rem; }
            .hamburger { display: block; }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                margin-top: 12px;
                background: #12122a;
                padding: 12px 16px;
                border-radius: 12px;
            }
            .main-nav.show { display: flex; }
            .main-nav a { padding: 10px 16px; border-radius: 8px; }
            .article-body h1 { font-size: 1.8rem; }
            .article-body h2 { font-size: 1.4rem; }
            .article-body h3 { font-size: 1.15rem; }
            .breadcrumb { font-size: 0.75rem; }
            .search-form input { min-width: 100%; }
            .feedback-card { padding: 20px; }
            .sidebar { position: static; margin-top: 30px; }
            .featured-img-wrapper { margin: 20px 0; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 12px; }
            .article-body h1 { font-size: 1.5rem; }
            .article-body p { font-size: 0.98rem; }
            .my-logo { font-size: 1.2rem; }
            .my-logo i { font-size: 1.4rem; }
        }
        .schema-hidden { display: none; }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #e9ecef;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #555;
            margin-bottom: 20px;
        }
        .last-updated i { color: #e10600; }
        .toc-item { display: flex; align-items: center; gap: 8px; }
        .toc-item i { color: #e10600; font-size: 0.8rem; }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #e10600;
            color: #fff;
            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(225,6,0,0.3);
            cursor: pointer;
            transition: transform 0.3s, opacity 0.3s;
            opacity: 0.7;
            border: none;
            z-index: 999;
        }
        .scroll-top:hover { opacity: 1; transform: translateY(-4px); }
        @media (max-width: 768px) {
            .scroll-top { bottom: 16px; right: 16px; width: 40px; height: 40px; font-size: 1rem; }
        }