*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1a2639;
            line-height: 1.8;
            padding: 0 16px;
        }
        a {
            color: #c44536;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #8b2c1a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0d1b2a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-bottom: 4px solid #c44536;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #c44536;
            padding-left: 1rem;
            background: linear-gradient(to right, #fff0eb, transparent);
        }
        h3 {
            font-size: 1.35rem;
            color: #2a3b4c;
        }
        h4 {
            font-size: 1.1rem;
            color: #3d4f63;
        }
        p {
            margin-bottom: 1.2rem;
            color: #2c3e50;
        }
        strong,
        b {
            color: #0d1b2a;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            border-radius: 24px;
            padding: 24px 32px 40px;
            margin-top: 20px;
            margin-bottom: 40px;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            border-bottom: 2px solid #e8edf3;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: #0d1b2a;
            background: linear-gradient(135deg, #c44536, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            text-decoration: none;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #c44536;
            font-size: 1.8rem;
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 20px;
        }
        nav a {
            font-weight: 500;
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        nav a:hover {
            border-bottom-color: #c44536;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0d1b2a;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #f0f0f0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.9rem;
            padding: 14px 0 6px;
            color: #5a6b7c;
            background: transparent;
            list-style: none;
        }
        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #a0b0c0;
            font-weight: 700;
            margin-right: 6px;
        }
        .breadcrumb a {
            color: #c44536;
        }
        .breadcrumb .current {
            color: #2c3e50;
            font-weight: 600;
        }
        .search-wrap {
            background: #f0f4fa;
            border-radius: 60px;
            padding: 8px 16px 8px 24px;
            display: flex;
            align-items: center;
            max-width: 460px;
            margin: 20px 0 24px;
            border: 1px solid #dce3ec;
            transition: 0.2s;
        }
        .search-wrap:focus-within {
            border-color: #c44536;
            box-shadow: 0 0 0 3px rgba(196, 69, 54, 0.15);
        }
        .search-wrap i {
            color: #7f8fa3;
            font-size: 1.1rem;
            margin-right: 10px;
        }
        .search-wrap input {
            border: none;
            background: transparent;
            flex: 1;
            padding: 10px 0;
            font-size: 1rem;
            outline: none;
            color: #1a2639;
        }
        .search-wrap input::placeholder {
            color: #8a9aa8;
        }
        .search-wrap button {
            background: #c44536;
            border: none;
            color: white;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 40px;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
        }
        .search-wrap button:hover {
            background: #a83426;
            transform: scale(1.02);
        }
        .feature-img {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
            background: #eef3f9;
            padding: 8px;
        }
        .feature-img img {
            border-radius: 12px;
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/9;
            background: #d9e2ed;
        }
        .feature-img figcaption {
            font-size: 0.9rem;
            color: #4a5b6e;
            padding: 8px 8px 4px;
            font-style: italic;
        }
        .info-box {
            background: linear-gradient(135deg, #faf6f3, #f0eae4);
            border-left: 6px solid #c44536;
            padding: 18px 24px;
            border-radius: 12px;
            margin: 24px 0;
            font-size: 0.98rem;
        }
        .info-box strong {
            color: #8b2c1a;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 10px 20px;
            background: #f8fafd;
            padding: 16px 20px;
            border-radius: 16px;
            margin: 20px 0 28px;
            border: 1px solid #e2e8f0;
        }
        .link-grid a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 0;
            font-weight: 500;
        }
        .link-grid a i {
            font-size: 0.8rem;
            color: #c44536;
        }
        .feedback-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 3px solid #e8edf3;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        @media (max-width:720px) {
            .feedback-section {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .comment-box,
        .rating-box {
            background: #f9fbfd;
            border-radius: 18px;
            padding: 24px 28px;
            border: 1px solid #e2e8f0;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
        }
        .comment-box textarea,
        .rating-box select,
        .rating-box input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #d0d9e4;
            border-radius: 10px;
            font-size: 1rem;
            background: white;
            transition: 0.2s;
            font-family: inherit;
        }
        .comment-box textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-box textarea:focus,
        .rating-box select:focus,
        .rating-box input:focus {
            border-color: #c44536;
            outline: none;
            box-shadow: 0 0 0 3px rgba(196, 69, 54, 0.1);
        }
        .comment-box button,
        .rating-box button {
            background: #c44536;
            color: white;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: 0.2s;
            margin-top: 10px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #a83426;
            transform: translateY(-1px);
        }
        .star-display {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #f1c40f;
            margin: 6px 0 10px;
        }
        .star-display i {
            cursor: pointer;
            transition: 0.15s;
        }
        .star-display i:hover {
            transform: scale(1.15);
        }
        footer {
            margin-top: 48px;
            padding-top: 28px;
            border-top: 2px solid #e8edf3;
            font-size: 0.95rem;
        }
        friend-link {
            display: block;
            background: #f0f4fa;
            padding: 18px 24px;
            border-radius: 16px;
            margin-bottom: 20px;
            border: 1px solid #dce3ec;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 16px 4px 0;
            font-weight: 500;
        }
        .copyright {
            color: #4a5b6e;
            font-size: 0.9rem;
            padding: 12px 0 6px;
            text-align: center;
            border-top: 1px solid #e2e8f0;
            margin-top: 12px;
        }
        .copyright strong {
            color: #1a2639;
        }
        @media (max-width:820px) {
            .container {
                padding: 16px 16px 30px;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0 8px;
                gap: 6px;
                border-top: 1px solid #e2e8f0;
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid #f0f0f0;
            }
            .search-wrap {
                max-width: 100%;
                flex-wrap: wrap;
                padding: 8px 12px;
            }
            .search-wrap button {
                padding: 6px 16px;
                font-size: 0.85rem;
                margin-top: 4px;
                width: 100%;
            }
            .link-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width:480px) {
            .link-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.8rem;
                gap: 4px 8px;
            }
            .feature-img {
                margin: 16px 0 20px;
            }
            .feedback-section {
                padding: 0 4px;
            }
            .comment-box,
            .rating-box {
                padding: 16px 14px;
            }
        }
        .text-small {
            font-size: 0.9rem;
            color: #5a6b7c;
        }
        .badge {
            display: inline-block;
            background: #c44536;
            color: white;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 40px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }
        .spacer {
            height: 12px;
        }
        .hr-symbol {
            text-align: center;
            font-size: 1.4rem;
            letter-spacing: 12px;
            color: #c0ccdd;
            margin: 28px 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 28px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #0d1b2a;
            color: white;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e2e8f0;
            background: #fafcfe;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f2f6fc;
        }
        .schema-hidden {
            display: none;
        }