*,
        *::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: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #004080;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0d1b2a;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.2rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 2px solid #e0e6ed;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #1b3a5c;
        }
        h4 {
            font-size: 1.1rem;
            color: #2a4a6b;
            font-weight: 600;
        }
        p {
            margin: 0.9rem 0;
            color: #2d3748;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0f1a2e, #1a2d4a);
            color: #fff;
            padding: 0.8rem 0;
            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;
            gap: 0.6rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-block;
            font-style: italic;
        }
        .my-logo small {
            font-size: 0.65rem;
            -webkit-text-fill-color: #aac4e0;
            color: #aac4e0;
            display: block;
            font-style: normal;
            font-weight: 400;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.1rem;
            flex-wrap: wrap;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            display: block;
            padding: 0.5rem 0.9rem;
            color: #e0edff;
            font-size: 0.88rem;
            font-weight: 500;
            border-radius: 6px;
            transition: background 0.25s, color 0.25s;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.13);
            color: #ffd966;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.7rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.nav-list {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 0.8rem;
            background: #0f1a2e;
            border-radius: 12px;
            padding: 0.8rem;
        }
        #nav-toggle:checked~.nav-list li a {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.6rem 1.2rem;
            font-size: 0.82rem;
            border-radius: 0 0 8px 8px;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            margin: 0 0 1.5rem 0;
        }
        .breadcrumb a {
            color: #2c5f8a;
        }
        .breadcrumb span {
            color: #5a6a7a;
        }
        .breadcrumb .current {
            color: #0d1b2a;
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2rem;
            margin: 1.5rem 0;
        }
        .content-area {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2.2rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem 1.4rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.15rem;
            margin-top: 0.2rem;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0;
        }
        .sidebar ul li {
            margin-bottom: 0.5rem;
        }
        .sidebar ul li a {
            display: block;
            padding: 0.4rem 0.6rem;
            border-radius: 6px;
            font-size: 0.9rem;
            transition: background 0.2s;
        }
        .sidebar ul li a:hover {
            background: #f0f4fb;
            text-decoration: none;
        }
        .search-box {
            background: #f0f4fb;
            border-radius: 40px;
            padding: 0.3rem 0.3rem 0.3rem 1.2rem;
            display: flex;
            align-items: center;
            border: 1px solid #dce3ed;
            transition: border 0.3s;
            max-width: 480px;
            margin: 1.2rem 0 1.8rem 0;
        }
        .search-box:focus-within {
            border-color: #f7971e;
            box-shadow: 0 0 0 3px rgba(247, 151, 30, 0.15);
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.7rem 0.5rem;
            font-size: 0.95rem;
            outline: none;
            color: #1a1a2e;
        }
        .search-box button {
            background: #f7971e;
            border: none;
            border-radius: 40px;
            padding: 0.55rem 1.2rem;
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-box button:hover {
            background: #e08500;
            transform: scale(1.02);
        }
        .featured-img {
            margin: 1.8rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            background: #eef2f7;
        }
        .featured-img img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 0.7rem 1.2rem;
            font-size: 0.85rem;
            color: #4a5a6a;
            background: #f8fafc;
            border-top: 1px solid #e6ecf3;
        }
        .interaction-zone {
            margin-top: 2.8rem;
            border-top: 2px solid #eef2f7;
            padding-top: 2rem;
        }
        .interaction-zone h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.92rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.65rem 0.9rem;
            border: 1px solid #d0d8e2;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.3s;
            background: #fafcfe;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f7971e;
            outline: none;
            box-shadow: 0 0 0 3px rgba(247, 151, 30, 0.12);
        }
        .form-group textarea {
            min-height: 110px;
            resize: vertical;
        }
        .btn {
            background: #1a2d4a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #0f1a2e;
            transform: translateY(-1px);
        }
        .btn-primary {
            background: #f7971e;
        }
        .btn-primary:hover {
            background: #e08500;
        }
        .score-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem 2rem;
            background: #f8fafc;
            padding: 1.2rem 1.6rem;
            border-radius: 14px;
            margin: 1.2rem 0 1.8rem 0;
        }
        .score-wrap .stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d0d8e2;
            cursor: pointer;
            transition: color 0.15s;
        }
        .score-wrap .stars i {
            transition: color 0.15s, transform 0.1s;
        }
        .score-wrap .stars i:hover,
        .score-wrap .stars i.active {
            color: #f7b731;
            transform: scale(1.08);
        }
        .score-wrap .score-display {
            font-weight: 700;
            font-size: 1.2rem;
            color: #1a2d4a;
        }
        .site-footer {
            background: #0d1b2a;
            color: #c8d6e5;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
            border-radius: 24px 24px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #ffd966;
            margin-top: 0;
            font-size: 1.05rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 0.5rem;
        }
        .footer-inner a {
            color: #aac4e0;
        }
        .footer-inner a:hover {
            color: #ffd966;
        }
        friend-link {
            display: block;
            margin-top: 0.6rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
            padding: 0.2rem 0.6rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 20px;
            font-size: 0.85rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.8rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.82rem;
            color: #8a9bb0;
        }
        .last-update {
            display: inline-block;
            background: #eef2f7;
            padding: 0.25rem 1rem;
            border-radius: 20px;
            font-size: 0.78rem;
            color: #4a5a6a;
            margin-bottom: 1rem;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .content-area {
                order: 1;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-list {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0;
            }
            .hamburger {
                display: block;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .content-area {
                padding: 1.2rem 1rem;
            }
            .sidebar {
                padding: 1.2rem 1rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .score-wrap {
                flex-direction: column;
                align-items: flex-start;
            }
            .search-box {
                max-width: 100%;
                flex-wrap: wrap;
                border-radius: 24px;
            }
            .search-box input {
                min-width: 140px;
            }
            .search-box button {
                margin-top: 0.2rem;
            }
            .breadcrumb {
                font-size: 0.72rem;
                padding: 0.4rem 0.8rem;
            }
        }
        @media (max-width: 480px) {
            html {
                font-size: 15px;
            }
            .container {
                padding: 0 0.8rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .nav-list li a {
                font-size: 0.82rem;
                padding: 0.4rem 0.7rem;
            }
        }
        .text-muted {
            color: #5a6a7a;
            font-size: 0.9rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            align-items: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .highlight {
            background: #fff9e6;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .emoji-lg {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        table th {
            background: #1a2d4a;
            color: #fff;
            padding: 0.6rem 0.9rem;
            text-align: left;
        }
        table td {
            padding: 0.5rem 0.9rem;
            border-bottom: 1px solid #e6ecf3;
        }
        table tr:hover td {
            background: #f8fafc;
        }