*,
        *::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: #fafafc;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #b22234;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #8b0000;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0a0a1a;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #b22234;
            padding-bottom: 0.5rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #b22234;
            padding-left: 0.8rem;
            margin-top: 2.4rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 1.8rem;
        }
        h4 {
            font-size: 1.15rem;
            margin-top: 1.2rem;
            color: #2d2d44;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 300;
            color: #2c2c44;
        }
        strong,
        b {
            color: #111;
        }
        em {
            font-style: italic;
        }
        .highlight-box {
            background: #f0f4ff;
            border-left: 6px solid #b22234;
            padding: 1.2rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .stat-badge {
            display: inline-block;
            background: #1a1a2e;
            color: #fff;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        header {
            background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 100%);
            color: #fff;
            padding: 0.8rem 0;
            border-bottom: 4px solid #b22234;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, #b22234, #ff6b35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 10px rgba(178, 34, 52, 0.3);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.65rem;
            -webkit-text-fill-color: #aaa;
            display: block;
            font-weight: 400;
            letter-spacing: 1px;
        }
        nav.main-nav {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        nav.main-nav a {
            color: #ddd;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s;
        }
        nav.main-nav a:hover {
            background: rgba(178, 34, 52, 0.25);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #f0f0f5;
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            margin: 0.8rem 0 1.2rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb a {
            color: #b22234;
        }
        .breadcrumb span {
            color: #666;
        }
        .search-wrap {
            background: #fff;
            border-radius: 50px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            padding: 0.3rem 0.3rem 0.3rem 1.5rem;
            display: flex;
            max-width: 480px;
            margin: 1.5rem 0;
            border: 1px solid #e0e0e8;
        }
        .search-wrap input {
            flex: 1;
            border: none;
            padding: 0.7rem 0;
            font-size: 1rem;
            background: transparent;
            outline: none;
            min-width: 0;
        }
        .search-wrap button {
            background: #b22234;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.6rem 1.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            white-space: nowrap;
        }
        .search-wrap button:hover {
            background: #8b0000;
        }
        .user-feedback {
            background: #fff;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin: 2.5rem 0;
            border: 1px solid #e8e8f0;
        }
        .user-feedback h3 {
            margin-top: 0;
        }
        .feedback-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .feedback-form .row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .feedback-form .row input,
        .feedback-form .row textarea,
        .feedback-form .row select {
            flex: 1;
            min-width: 200px;
            padding: 0.8rem 1.2rem;
            border: 1px solid #d0d0e0;
            border-radius: 12px;
            font-size: 1rem;
            background: #fafafc;
            transition: border 0.2s;
        }
        .feedback-form .row textarea {
            min-height: 100px;
            width: 100%;
        }
        .feedback-form .row input:focus,
        .feedback-form .row textarea:focus,
        .feedback-form .row select:focus {
            border-color: #b22234;
            outline: none;
            box-shadow: 0 0 0 3px rgba(178, 34, 52, 0.1);
        }
        .feedback-form .btn-submit {
            background: #b22234;
            color: #fff;
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-form .btn-submit:hover {
            background: #8b0000;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #f4c430;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .star-rating i {
            transition: transform 0.15s, color 0.2s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
            color: #ffb800;
        }
        .featured-image {
            border-radius: 20px;
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            background: #e8e8f0;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #555;
            background: #f8f8fc;
            border-top: 1px solid #e0e0e8;
        }
        footer {
            background: #0a0a1a;
            color: #ccc;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 4px solid #b22234;
        }
        footer .container {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            background: rgba(255, 255, 255, 0.04);
            padding: 1.2rem 1.5rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            color: #f0b0b0;
            font-size: 0.95rem;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: rgba(178, 34, 52, 0.2);
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            font-size: 0.85rem;
            color: #888;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.2rem;
            text-align: center;
        }
        .copyright strong {
            color: #ddd;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: #fff;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.9rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #eee;
        }
        th {
            background: #1a1a2e;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f8f8ff;
        }
        .toc {
            background: #f8f8fc;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0 2.5rem;
            border: 1px solid #e0e0e8;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            columns: 2 280px;
            list-style: none;
            padding: 0;
            margin: 0.6rem 0 0;
        }
        .toc ul li {
            padding: 0.2rem 0;
        }
        .toc ul li a {
            color: #b22234;
            font-weight: 500;
        }
        .toc ul li a:hover {
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 0.4rem;
            }
            header .container {
                flex-wrap: nowrap;
            }
            .hamburger {
                display: block;
            }
            nav.main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #0a0a1a;
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.8rem;
                border-bottom: 3px solid #b22234;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
            }
            #nav-toggle:checked~nav.main-nav {
                display: flex;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
            .search-wrap {
                flex-direction: column;
                border-radius: 16px;
                padding: 0.8rem;
                gap: 0.6rem;
            }
            .search-wrap input {
                width: 100%;
                padding: 0.6rem 0.8rem;
                border: 1px solid #ddd;
                border-radius: 30px;
            }
            .search-wrap button {
                width: 100%;
                padding: 0.7rem;
            }
            .user-feedback {
                padding: 1.2rem;
            }
            .feedback-form .row {
                flex-direction: column;
            }
            .feedback-form .row input,
            .feedback-form .row textarea,
            .feedback-form .row select {
                min-width: auto;
                width: 100%;
            }
            .toc ul {
                columns: 1;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.6rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo small {
                font-size: 0.55rem;
            }
            .star-rating {
                font-size: 1.4rem;
            }
            friend-link {
                flex-direction: column;
                gap: 0.4rem;
            }
            .featured-image figcaption {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.3rem;
            }
            h2 {
                font-size: 1.15rem;
            }
            p {
                font-size: 0.95rem;
            }
            .lead {
                font-size: 1.05rem;
            }
        }
        .update-badge {
            background: #eef2f7;
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #555;
            display: inline-block;
            margin-bottom: 0.8rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 1.2rem 0;
        }
        @media (max-width: 600px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 1.2rem 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #ededf5;
        }
        .emoji-big {
            font-size: 2rem;
            display: inline-block;
            margin-right: 0.4rem;
        }
        .inline-link {
            font-weight: 600;
            border-bottom: 1px dotted #b22234;
        }