* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            background-color: #ffffff;
            color: #1f2937;
            line-height: 1.6;
            font-size: 15px;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: #0284c7;
            transition: color 0.2s ease;
        }

        a:hover {
            color: #0369a1;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .btn {
            border: none;
            outline: none;
            cursor: pointer;
            border-radius: 6px;
            transition: all 0.2s ease;
            font-size: 14px;
            padding: 8px 16px;
        }

        h1 {
            font-size: 26px;
            font-weight: 700;
            margin: 24px 0;
            color: #111827;
            display: none;
        }

        h2 {
            font-size: 20px;
            font-weight: 600;
            margin: 0 0 16px;
            color: #111827;
            display: none;
        }

        h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 20px 0 12px;
            color: #111827;
        }

        .card {
            background: #ffffff;
            border-radius: 8px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.1);
            border: 1px solid #e5e7eb;
        }

        .badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            color: #ffffff !important;
        }

        .title-h2 {
            font-size: 18px;
            font-weight: 600;
            color: #111827;
            margin-bottom: 16px;
        }

        header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: #ffffff;
            border-bottom: 1px solid #e5e7eb;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
            padding: 12px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .header-right {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #111827;
        }

        .logo span {
            color: #0284c7;
        }

        .nav-main {
            display: flex;
            gap: 24px;
            list-style: none;
        }

        .nav-main a {
            color: #4b5563;
            font-weight: 500;
            font-size: 14px;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
        }

        .nav-main a:hover,
        .nav-main a.active {
            color: #0284c7;
            border-bottom: 2px solid #0284c7;
        }

        .search-wrap {
            display: flex;
            width: 420px;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid #e5e7eb;
        }

        .search-input {
            width: 100%;
            padding: 10px 18px;
            border: none;
            font-size: 14px;
            color: #1f2937;
            outline: none;
        }

        .search-input:focus {
            background-color: #f8fafc;
        }

        .search-btn {
            width: 80px;
            background: #0284c7;
            color: #fff;
            font-weight: 500;
            padding: 10px 0;
            cursor: pointer;
        }

        .search-btn:hover {
            background: #0369a1;
        }

        .avatar-link {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: 4px;
            width: fit-content;
            max-width: 120px;
            min-width: 36px;
            height: 36px;
            border-radius: 18px;
            background-color: #f3f4f6;
            transition: background-color 0.2s ease;
            color: #4b5563;
            font-size: 14px;
            font-weight: 500;
            text-align: left;
            padding: 0 12px;
            flex-shrink: 0;
        }

        .avatar-username {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            flex: 0 1 auto;
            min-width: 0;
        }

        .avatar-svg {
            width: 20px;
            height: 20px;
            fill: #6b7280;
            flex-shrink: 0;
        }

        .avatar-link.avatar-text {
            width: 120px;
            padding: 0 12px;
            border-radius: 18px;
        }


        .avatar-link svg {
            display: block;
        }

        .avatar-link:hover {
            background-color: #e5e7eb;
            color: #0284c7;
        }


        .breadcrumb {
            padding: 20px 0;
            font-size: 14px;
            color: #6b7280;
        }

        .breadcrumb a {
            color: #6b7280;
        }

        .breadcrumb a:hover {
            color: #0284c7;
        }

        .breadcrumb span {
            margin: 0 8px;
            color: #d1d5db;
        }

        .standard-header {
            padding: 20px;
            margin-bottom: 24px;
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
        }

        .standard-header .standard-code {
            font-weight: 700;
            color: #0284c7;
            font-size: 20px;
            margin-bottom: 8px;
            display: inline-block;
        }

        .standard-header .standard-status {
            margin-left: 12px;
        }

        .standard-header .standard-name-cn {
            font-weight: 600;
            color: #1f2937;
            font-size: 18px;
            margin-bottom: 8px;
        }

        .standard-header .standard-name-en {
            font-size: 14px;
            color: #6b7280;
            font-style: italic;
        }

        .content-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
            margin-bottom: 20px;
            border-bottom: 1px solid #e5e7eb;
            padding-bottom: 0;
        }

        .content-tab {
            padding: 12px 24px;
            background: transparent;
            color: #6b7280;
            font-weight: 500;
            border: none;
            border-bottom: 3px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .content-tab:hover {
            color: #0284c7;
            background-color: #f8fafc;
        }

        .content-tab.active {
            color: #0284c7;
            border-bottom: 3px solid #0284c7;
            font-weight: 600;
        }

        .content-panel {
            display: none;
            padding: 24px;
            background: #ffffff;
            border-radius: 8px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            border: 1px solid #e5e7eb;
            margin-bottom: 24px;
        }

        .content-panel.active {
            display: block;
        }

        #relation-panel,
        #similar-panel {
            box-shadow: none;
            border: none;
            background: transparent;
            padding: 0;
            margin-top: -8px;
        }

        .info-group {
            margin-bottom: 28px;
        }

        .info-group h3 {
            margin-bottom: 12px;
            padding-bottom: 6px;
            border-bottom: 1px solid #f0f0f0;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 16px 20px;
        }

        .info-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .info-item label {
            font-weight: 500;
            color: #374151;
            font-size: 14px;
        }

        .info-item value {
            color: #6b7280;
            font-size: 14px;
        }

        .scope-text {
            color: #6b7280;
            font-size: 14px;
            line-height: 1.8;
            padding: 8px 0;
        }

        .interpretation-content h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 20px 0 12px;
            color: #111827;
        }

        .interpretation-content p,
        .interpretation-content li,
        .interpretation-content blockquote {
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .interpretation-content ul,
        .interpretation-content ol {
            margin: 12px 0 12px 24px;
        }

        .interpretation-content li {
            margin-bottom: 8px;
        }

        .interpretation-content strong {
            color: #1f2937;
        }

        .interpretation-content blockquote {
            border-left: 4px solid #0284c7;
            padding: 12px 16px;
            background: #f8fafc;
            margin: 16px 0;
            border-radius: 0 6px 6px 0;
        }

        .interpretation-content hr {
            border: none;
            border-top: 1px solid #e5e7eb;
            margin: 24px 0;
        }

        .interpretation-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 16px 0;
        }

        .interpretation-content table th,
        .interpretation-content table td {
            border: 1px solid #e5e7eb;
            padding: 8px 12px;
            text-align: left;
            font-size: 14px;
        }

        .interpretation-content table th {
            background: #f8fafc;
            font-weight: 600;
        }

        .interpretation-content img {
            max-width: 100%;
            border-radius: 6px;
            margin: 16px 0;
        }

        .preview-big-box {
            margin-bottom: 30px;
        }

        .preview-big-img {
            width: 100%;
            border-radius: 8px;
            border: 1px solid #e5e7eb;
            margin-bottom: 8px;
        }

        .preview-desc {
            font-size: 14px;
            color: #6b7280;
            text-align: center;
        }

        .relation-desc {
            padding: 12px 16px;
            background: #f8fafc;
            border-radius: 8px;
            margin-bottom: 16px;
            line-height: 1.7;
            font-size: 15px;
        }

        .relation-img {
            max-width: 100%;
            border-radius: 8px;
            margin: 12px 0 20px;
            border: 1px solid #e5e7eb;
        }

        .relation-list,
        .similar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding: 0;
            background: transparent !important;
            border: none !important;
            box-shadow: none !important;
        }

        .standard-link {
            display: block;
            color: inherit;
            text-decoration: none;
        }

        .standard-item {
            display: flex;
            flex-wrap: nowrap;
            padding: 0;
            background: #ffffff;
            border-radius: 8px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            border: 1px solid #e5e7eb;
            overflow: hidden;
        }

        .standard-item:hover {
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
            border-color: #dbeafe;
        }

        .standard-left {
            flex: 0 0 65%;
            min-width: 0;
            padding: 20px;
        }

        .standard-right {
            flex: 1;
            min-width: 0;
            padding: 20px;
            background-color: #f8fafc;
            border-left: 1px solid #e2e8f0;
            align-self: stretch;
        }

        .standard-type {
            display: inline-block;
            font-size: 12px;
            color: #0284c7;
            background: #eff6ff;
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .standard-code {
            font-weight: 700;
            color: #0284c7;
            font-size: 16px;
            margin-bottom: 6px;
            display: inline-block;
            margin-right: 12px;
        }

        .standard-status {
            display: inline-block;
            vertical-align: middle;
        }

        .badge-active {
            background: #10b981;
        }

        .badge-obsolete {
            background: #ef4444;
        }

        .standard-name-cn {
            font-weight: 600;
            color: #1f2937;
            font-size: 15px;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .standard-name-en {
            font-size: 13px;
            color: #6b7280;
            font-style: italic;
            margin-bottom: 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .standard-meta {
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 13px;
            height: 100%;
            justify-content: center;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .meta-item strong {
            color: #374151;
            font-weight: 500;
            min-width: 60px;
        }

        .meta-item span {
            color: #6b7280;
        }

        .download-section {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 40px;
            z-index: 998;
            display: flex;
            flex-direction: column;
            gap: 12px;
            justify-content: center;
            align-items: center;
        }

        .download-btn {
            padding: 12px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            width: 160px;
            text-align: center;
            border: none;
            color: #ffffff;
        }

        .download-btn.vip {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }

        .download-btn.vip:hover {
            background: linear-gradient(135deg, #d97706, #b45309);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
            transform: translateY(-2px);
        }

        .download-btn.normal {
            background: linear-gradient(135deg, #0284c7, #0369a1);
        }

        .download-btn.normal:hover {
            background: linear-gradient(135deg, #0369a1, #075985);
            box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
            transform: translateY(-2px);
        }

        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, .5);
            backdrop-filter: blur(5px);
            animation: fadeIn .3s ease
        }

        @keyframes fadeIn {
            from {
                opacity: 0
            }

            to {
                opacity: 1
            }
        }

        .modal.active {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background-color: #fff;
            margin: 15% auto;
            padding: 40px;
            border-radius: 16px;
            width: 90%;
            max-width: 500px;
            text-align: center;
            box-shadow: 0 15px 40px rgba(0, 0, 0, .2);
            animation: slideUp .3s ease
        }

        @keyframes slideUp {
            from {
                transform: translateY(30px);
                opacity: 0
            }

            to {
                transform: translateY(0);
                opacity: 1
            }
        }

        .modal h3#modalTitle {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #1d1d1f;
            letter-spacing: -.5px
        }

        .modal #modalContent {
            font-size: 16px;
            color: #6e6e73;
            margin-bottom: 20px;
            line-height: 1.7
        }

        .qrcode-container {
            margin: 15px 0 25px;
            padding: 15px
        }

        .qrcode-img {
            width: 200px;
            height: 200px;
            object-fit: contain;
            border-radius: 8px
        }

        .modal-buttons {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 10px
        }

        .modal-btn {
            padding: 10px 28px;
            border: none;
            border-radius: 20px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all .3s ease;
            min-width: 90px;
            display: inline-flex;
            align-items: center;
            justify-content: center
        }

        .modal-btn#wxPayBtn.wx-pay,
        .modal-btn#wxPayJsapiBtn.wx-pay {
            background-color: #34c759;
            color: #fff;
            box-shadow: 0 2px 10px rgba(52, 199, 89, .3);
            display: none
        }

        .modal-btn.wx-pay:before {
            content: "";
            width: 16px;
            height: 16px;
            margin-right: 6px;
            background-size: 100% 100%;
            background-repeat: no-repeat;
            background-position: center center;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1024 1024'%3E%3Cpath d='M964.949 290.702L377.856 629.76l-3.527 2.389c-4.665 2.389-9.444 3.527-15.36 3.527-12.971 0-23.666-7.054-29.582-17.749l-2.389-4.665-93.298-203.321c-1.138-2.389-1.138-4.665-1.138-7.054 0-9.444 7.054-16.612 16.612-16.612 3.527 0 7.054 1.138 10.581 3.527l109.909 78.052c8.192 4.665 17.749 8.192 28.331 8.192 5.916 0 11.719-1.138 17.749-3.527l515.186-229.262C838.77 134.713 686.421 63.716 513.82 63.716 232.676 63.716 3.413 254.066 3.413 489.131c0 127.545 68.494 243.371 176.014 321.422 8.192 5.916 14.108 16.612 14.108 27.193 0 3.527-1.138 7.054-2.389 10.581-8.192 31.858-22.528 83.968-22.528 86.244-1.138 3.527-2.389 8.192-2.389 12.971 0 9.444 7.054 16.612 16.612 16.612 3.527 0 7.054-1.138 9.444-3.527l111.047-64.967c8.192-4.665 17.749-8.192 27.193-8.192 4.665 0 10.581 1.138 15.36 2.389 51.996 15.36 108.772 23.666 166.684 23.666 261.129 0 490.391-190.35 490.391-425.291 0-70.997-21.276-138.24-57.913-197.404z' fill='%23FFFFFF'/%3E%3C/svg%3E")
        }

        .modal-btn#wxPayBtn.wx-pay:hover,
        .modal-btn#wxPayJsapiBtn.wx-pay:hover {
            background-color: #28a745;
            transform: translateY(-1px);
            box-shadow: 0 4px 15px rgba(52, 199, 89, .4)
        }

        .modal-btn#aliPayBtn.ali-pay {
            background-color: #007aff;
            color: #fff;
            box-shadow: 0 2px 10px rgba(0, 122, 255, .3);
            display: none
        }

        .modal-btn.ali-pay:before {
            content: "";
            width: 16px;
            height: 16px;
            margin-right: 6px;
            background-size: 100% 100%;
            background-repeat: no-repeat;
            background-position: center center;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1024 1024'%3E%3Cpath d='M561.911 1024h-99.724c-13.037-2.286-26.05-4.67-39.111-6.859-201.881-34.052-368.372-193.247-411.059-393.498-4.865-22.839-8.051-46.044-12.016-69.077v-85.131q3.454-21.38 6.932-42.76c32.374-202.392 192.152-371.267 392.379-414.392 22.839-4.062 46.418-7.297 69.483-10.337h85.131c14.594 2.432 29.382 4.621 44.073 7.005 202.197 32.958 369.71 191.374 413.492 391.042 4.621 21.21 7.978 42.711 11.943 64.091v99.724c-2.432 14.594-4.354 29.48-7.54 43.976-5.181 23.52-11.213 46.822-17.026 70.877-105.489-26.755-204.849-63.24-304.768-100.673 36.485-65.015 63.41-131.928 80.266-204.63h-190.717v-67.545h232.236v-39.598h-233.501V149.489c-33.444 0-65.794-0.438-98.119 0.243-11.335 0.219-15.372 8.756-15.348 19.458v82.698c0 4.257-0.365 8.489-0.584 13.548H232.893v39.209h235.933v67.886h-194.584v38.917h377.858a16.661 16.661 0 0 1 0 3.235 588.423 588.423 0 0 1-50.568 123.731c-1.07 1.97-6.859 3.113-9.729 2.214-71.437-22.45-143.165-43.49-217.789-52.757-43.246-5.351-86.031-5.862-128.45 6.543-85.568 25.028-139.833 97.292-131.344 181.79 4.719 47.211 25.636 84.96 64.334 112.859 52.611 37.944 112.348 48.111 174.931 42.2 76.034-7.297 142.557-38.917 200.543-87.758 28.628-24.128 54.703-51.273 81.969-77.104 98.922 43.538 199.789 87.903 300.608 132.22a10.337 10.337 0 0 1-0.657 2.724c-1.484 2.432-3.04 4.865-4.694 7.078-75.961 104.954-176.585 173.302-302.749 203.365-21.964 5.156-44.39 8.173-66.596 12.21z' fill='%23FFFFFF'/%3E%3Cpath d='M548.849 621.721c-54.386 67.423-115.486 122.783-201.541 140.271-57.038 11.602-113.394 6.543-160.994-31.279-62.267-49.473-41.349-128.401 12.818-155.667 45.849-23.156 93.96-29.188 144.43-23.35 72.872 8.148 138.082 38.211 205.286 70.026z' fill='%23FFFFFF'/%3E%3C/svg%3E")
        }

        .modal-btn#aliPayBtn.ali-pay:hover {
            background-color: #0062cc;
            transform: translateY(-1px);
            box-shadow: 0 4px 15px rgba(0, 122, 255, .4)
        }

        .modal-btn#downloadBtn.primary.download {
            background-color: #0071e3;
            color: #fff;
            box-shadow: 0 2px 10px rgba(0, 113, 227, .3);
            display: none
        }

        .modal-btn#downloadBtn.primary.download:hover {
            background-color: #0056b3;
            transform: translateY(-1px);
            box-shadow: 0 4px 15px rgba(0, 113, 227, .4)
        }

        .modal-btn#cancelBtn.secondary.cancel {
            background-color: #f5f5f7;
            color: #1d1d1f;
            transition: all .3s ease
        }

        .modal-btn#cancelBtn.secondary.cancel:hover {
            background-color: #e0e0e0;
            transform: translateY(-1px)
        }

        footer {
            background: #f8fafc;
            color: #6b7280;
            padding: 24px 0;
            margin-top: 40px;
            border-top: 1px solid #e2e8f0;
        }

        .footer-inner {
            text-align: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 16px;
        }

        .footer-links a {
            color: #6b7280;
            font-size: 14px;
        }

        .footer-links a:hover {
            color: #0284c7;
        }

        .footer-record {
            font-size: 12px;
            color: #9ca3af;
            margin-bottom: 8px;
        }

        .footer-desc {
            font-size: 11px;
            color: #9ca3af;
            line-height: 1.5;
            max-width: 800px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 12px;
            }

            .header-left {
                width: 100%;
                gap: 20px;
            }

            .header-right {
                width: 100%;
                display: flex;
                align-items: center;
                gap: 12px;
            }

            .nav-main {
                gap: 16px;
            }

            .search-wrap {
                flex: 1;
                max-width: calc(100% - 140px);
                min-width: 180px;
            }

            .search-input {
                width: 100%;
                padding: 10px 18px;
            }

            .search-btn {
                width: 70px;
            }

            .avatar-link {
                max-width: 110px;
                min-width: 32px;
            }

            .avatar-svg {
                width: 18px;
                height: 18px;
            }

            h1 {
                font-size: 22px;
                margin: 16px 0;
            }

            .content-tab {
                padding: 10px 16px;
                font-size: 13px;
            }

            .content-panel {
                padding: 16px;
            }

            #relation-panel,
            #similar-panel {
                padding: 0px;
            }

            .info-grid {
                grid-template-columns: 1fr;
            }

            .standard-item {
                flex-direction: column;
            }

            .standard-left,
            .standard-right {
                width: 100%;
            }

            .standard-right {
                border-left: none;
                border-top: 1px solid #e2e8f0;
                padding: 16px 20px;
            }

            .standard-meta {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px 12px;
                justify-content: flex-start;
            }

            .meta-item {
                flex: 1 1 calc(50% - 6px);
                min-width: auto;
                flex-direction: column;
                align-items: flex-start;
                gap: 2px;
            }

            .download-section {
            }

            .download-btn {
            }

            .modal-content {
                margin: 25% auto;
                padding: 30px 20px;
                width: 95%
            }

            .modal-buttons {
                flex-direction: column;
                align-items: center;
                gap: 8px
            }

            .modal-btn {
                width: 100%;
                max-width: 250px
            }
        }

        @media (max-width: 480px) {
            .search-wrap {
                max-width: calc(100% - 100px);
                min-width: 150px;
            }

            .nav-main {
                gap: 12px;
            }

            .avatar-link {
                max-width: 90px;
                font-size: 13px;
            }

            .avatar-svg {
                width: 18px;
                height: 18px;
            }

            .modal-content {
                padding: 20px 15px;
                border-radius: 12px
            }

            .modal h3#modalTitle {
                font-size: 20px
            }

            .modal #modalContent {
                font-size: 14px
            }
        }