*,
        *::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: #f5f3f0;
            color: #1e1e1e;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #b22234;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #7a1a1a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 40px rgba(0, 0, 0, .06);
            border-radius: 20px;
            padding: 1.5rem 2rem 2rem;
        }
        @media (max-width:768px) {
            body {
                padding: 0 .5rem;
            }
            .container {
                padding: 1rem 1rem 1.5rem;
                border-radius: 12px;
            }
        }
        header {
            padding: 1.2rem 0 .6rem;
            border-bottom: 3px solid #b22234;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -.5px;
            background: linear-gradient(135deg, #b22234, #2c5f8a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
        }
        .my-logo small {
            font-size: .75rem;
            font-weight: 400;
            -webkit-text-fill-color: #555;
            display: block;
            letter-spacing: 0;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: .85;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: #1e1e1e;
            padding: .25rem .5rem;
            border-radius: 8px;
            transition: background .2s;
        }
        .hamburger:hover {
            background: #f0eae4;
        }
        @media (max-width:768px) {
            .hamburger {
                display: block;
            }
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            gap: .25rem .75rem;
            align-items: center;
            transition: max-height .35s ease, opacity .25s ease;
        }
        nav a {
            font-weight: 600;
            font-size: .9rem;
            padding: .35rem .6rem;
            border-radius: 8px;
            color: #1e1e1e;
            transition: background .2s, color .2s;
        }
        nav a:hover {
            background: #b22234;
            color: #fff;
            text-decoration: none;
        }
        @media (max-width:768px) {
            nav {
                max-height: 0;
                opacity: 0;
                overflow: hidden;
                width: 100%;
                flex-direction: column;
                padding: .5rem 0 0;
                gap: .2rem;
            }
            nav.open {
                max-height: 600px;
                opacity: 1;
            }
            nav a {
                padding: .5rem .8rem;
                width: 100%;
                border-radius: 6px;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: .3rem .6rem;
            font-size: .85rem;
            padding: .75rem 0 .4rem;
            color: #666;
            list-style: none;
            width: 100%;
        }
        .breadcrumb li+li::before {
            content: "▸";
            margin-right: .6rem;
            color: #b22234;
        }
        .breadcrumb a {
            color: #2c5f8a;
        }
        main {
            padding: 1.8rem 0 2rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #1e1e1e;
            margin: 0 0 .5rem;
            letter-spacing: -1px;
        }
        h1 .highlight {
            background: linear-gradient(135deg, #b22234, #d4a017);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem;
            border-left: 5px solid #b22234;
            padding-left: 1rem;
            color: #1e1e1e;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 1.6rem 0 .7rem;
            color: #2c5f8a;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.2rem 0 .4rem;
            color: #444;
        }
        p {
            margin: 0 0 1.1rem;
            color: #2a2a2a;
        }
        .last-updated {
            font-size: .85rem;
            color: #888;
            margin-bottom: 1.6rem;
            display: block;
            border-bottom: 1px dashed #ddd;
            padding-bottom: .6rem;
        }
        .last-updated i {
            margin-right: .4rem;
        }
        .feature-img {
            margin: 1.8rem 0 2rem;
            border-radius: 16px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, .08);
        }
        .feature-img figcaption {
            font-size: .85rem;
            color: #777;
            text-align: center;
            margin-top: .5rem;
            font-style: italic;
        }
        .inline-link {
            font-weight: 600;
            color: #b22234;
            border-bottom: 1px dotted #b22234;
        }
        .inline-link:hover {
            border-bottom-style: solid;
        }
        .search-box {
            background: #f8f6f3;
            border-radius: 40px;
            padding: .3rem .3rem .3rem 1.2rem;
            display: flex;
            max-width: 480px;
            margin: 1.2rem 0 2rem;
            border: 1px solid #e0d8d0;
            transition: box-shadow .25s;
        }
        .search-box:focus-within {
            box-shadow: 0 0 0 3px rgba(178, 34, 52, .25);
            border-color: #b22234;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: .7rem 0;
            font-size: 1rem;
            outline: none;
            color: #1e1e1e;
        }
        .search-box button {
            background: #b22234;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: .6rem 1.4rem;
            font-weight: 600;
            font-size: .9rem;
            cursor: pointer;
            transition: background .25s, transform .15s;
        }
        .search-box button:hover {
            background: #7a1a1a;
            transform: scale(1.02);
        }
        .search-box button i {
            margin-right: .35rem;
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.8rem 0 1.5rem;
        }
        @media (max-width:768px) {
            .interact-grid {
                grid-template-columns: 1fr;
                gap: 1.6rem;
            }
        }
        .card {
            background: #faf8f6;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            border: 1px solid #e8e0d8;
            transition: box-shadow .25s;
        }
        .card:hover {
            box-shadow: 0 4px 20px rgba(0, 0, 0, .04);
        }
        .card h3 {
            margin-top: 0;
            border-left: 4px solid #d4a017;
            padding-left: .8rem;
        }
        .card form {
            display: flex;
            flex-direction: column;
            gap: .8rem;
        }
        .card input,
        .card textarea,
        .card select {
            padding: .7rem 1rem;
            border: 1px solid #d8d0c8;
            border-radius: 10px;
            font-size: .95rem;
            background: #fff;
            font-family: inherit;
            transition: border .2s;
        }
        .card input:focus,
        .card textarea:focus,
        .card select:focus {
            border-color: #b22234;
            outline: none;
            box-shadow: 0 0 0 2px rgba(178, 34, 52, .12);
        }
        .card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .card .btn {
            background: #2c5f8a;
            color: #fff;
            border: none;
            padding: .7rem 1.2rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            transition: background .25s, transform .15s;
            align-self: flex-start;
        }
        .card .btn:hover {
            background: #1a3f5e;
            transform: scale(1.02);
        }
        .card .btn i {
            margin-right: .4rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: .2rem;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color .2s, transform .15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #d4a017;
            transform: scale(1.05);
        }
        footer {
            border-top: 3px solid #b22234;
            padding: 2rem 0 1.2rem;
            margin-top: 2rem;
        }
        footer .flex-footer {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem 2rem;
        }
        friend-link {
            display: block;
            font-weight: 700;
            font-size: 1rem;
            color: #2c5f8a;
            margin-bottom: .6rem;
        }
        friend-link a {
            font-weight: 500;
            color: #1e1e1e;
            display: inline-block;
            margin: .15rem .8rem .15rem 0;
        }
        friend-link a:hover {
            color: #b22234;
        }
        .copyright {
            font-size: .85rem;
            color: #888;
            padding-top: 1.2rem;
            border-top: 1px solid #ece6e0;
            margin-top: 1.4rem;
            text-align: center;
        }
        .copyright i {
            margin-right: .3rem;
        }
        @media (max-width:480px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .search-box {
                flex-wrap: wrap;
                border-radius: 24px;
                padding: .3rem;
            }
            .search-box input {
                padding: .5rem .8rem;
                width: 100%;
            }
            .search-box button {
                width: 100%;
                border-radius: 20px;
                padding: .5rem;
            }
            .card {
                padding: 1.2rem;
            }
            .star-rating label {
                font-size: 1.5rem;
            }
        }
        :target {
            scroll-margin-top: 1.2rem;
        }
        .toc {
            background: #f8f6f3;
            border-radius: 16px;
            padding: 1.2rem 1.6rem;
            margin: 1.8rem 0 2rem;
            border: 1px solid #e8e0d8;
        }
        .toc h3 {
            margin: 0 0 .6rem;
            color: #1e1e1e;
            border: none;
            padding: 0;
        }
        .toc ul {
            columns: 2 240px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .toc li {
            padding: .2rem 0;
        }
        .toc li a {
            color: #2c5f8a;
            font-weight: 500;
        }
        .toc li a:hover {
            color: #b22234;
            text-decoration: underline;
        }
        @media (max-width:600px) {
            .toc ul {
                columns: 1;
            }
        }
        blockquote {
            border-left: 4px solid #d4a017;
            background: #fcf9f5;
            padding: 1rem 1.5rem;
            margin: 1.2rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #444;
        }
        blockquote cite {
            display: block;
            margin-top: .5rem;
            font-style: normal;
            font-weight: 600;
            color: #1e1e1e;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-item {
            background: #f0ece7;
            border-radius: 14px;
            padding: 1rem;
            text-align: center;
        }
        .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #b22234;
            display: block;
        }
        .stat-item .label {
            font-size: .85rem;
            color: #555;
        }