/* roulang page: index */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--brand-bg);
            color: var(--brand-text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--brand-blue);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        :focus-visible {
            outline: 2px solid var(--brand-blue);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding-inline: 1rem;
            }
        }

        .section-padding {
            padding-top: 4rem;
            padding-bottom: 4rem;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        @media (min-width: 1024px) {
            .section-padding {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        .card-base {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            transition: var(--transition-base);
        }

        .card-base:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-blue);
            color: #FFFFFF;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.5rem;
            font-size: 1rem;
            transition: var(--transition-base);
            border: 1px solid var(--brand-blue);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(15, 46, 82, 0.18);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(15, 46, 82, 0.15);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--brand-blue);
            color: var(--brand-blue);
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.5rem;
            font-size: 1rem;
            transition: var(--transition-base);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-secondary:hover {
            background: #EAF1F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            text-decoration: none;
        }

        .btn-large {
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
        }

        .data-num {
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--brand-muted);
            padding: 0.5rem 0.75rem;
            border-radius: 6px;
            transition: var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--brand-blue);
            background: #EAF1F9;
            text-decoration: none;
        }
        .nav-link.active {
            color: var(--brand-blue);
            font-weight: 600;
            background: #EAF1F9;
        }

        .step-dot {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            border: 2px solid var(--brand-border);
            background: #fff;
            color: var(--brand-muted);
            transition: var(--transition-base);
            flex-shrink: 0;
        }
        .step-dot.completed {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #fff;
        }
        .step-dot.current {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #fff;
            box-shadow: 0 0 0 4px rgba(30, 78, 140, 0.18);
        }

        .step-line {
            height: 2px;
            background: var(--brand-border);
            flex: 1;
            min-width: 20px;
            margin: 0 0.25rem;
            transition: var(--transition-base);
        }
        .step-line.completed {
            background: var(--brand-blue);
        }

        .progress-bar-bg {
            background: var(--brand-border);
            border-radius: 999px;
            overflow: hidden;
            height: 8px;
        }
        .progress-bar-fill {
            background: var(--brand-blue);
            border-radius: 999px;
            height: 100%;
            transition: width 0.6s ease;
        }

        .metric-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            padding: 1.5rem;
            border: 1px solid var(--brand-border);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .metric-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-border);
            border-radius: 0 0 var(--radius-card) var(--radius-card);
        }
        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-border);
        }

        .trend-up {
            color: var(--brand-green);
        }
        .trend-down {
            color: var(--brand-red);
        }
        .trend-flat {
            color: var(--brand-muted);
        }

        .faq-item {
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            background: #fff;
            overflow: hidden;
            transition: var(--transition-base);
            margin-bottom: 0.75rem;
        }
        .faq-item.open {
            border-color: var(--brand-blue);
            box-shadow: 0 4px 16px rgba(30, 78, 140, 0.08);
        }
        .faq-question {
            padding: 1rem 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--brand-text);
            user-select: none;
            background: #fff;
            transition: var(--transition-base);
            gap: 1rem;
        }
        .faq-question:hover {
            background: #F5F8FC;
        }
        .faq-answer {
            padding: 0 1.25rem 1.25rem;
            background: #F5F8FC;
            color: var(--brand-muted);
            font-size: 0.95rem;
            line-height: 1.75;
            display: none;
            border-top: 1px solid var(--brand-border);
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-arrow {
            transition: transform 0.3s ease;
            flex-shrink: 0;
            color: var(--brand-blue);
            font-size: 1.1rem;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .form-input,
        .form-select {
            width: 100%;
            height: 48px;
            padding: 0 1rem;
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            background: #fff;
            color: var(--brand-text);
            font-size: 1rem;
            transition: var(--transition-base);
            appearance: none;
        }
        .form-input:focus,
        .form-select:focus {
            border-color: var(--brand-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.12);
        }
        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-text);
            margin-bottom: 0.4rem;
            display: block;
        }

        .float-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: #fff;
            border-top: 1px solid var(--brand-border);
            box-shadow: 0 -4px 20px rgba(15, 46, 82, 0.08);
            z-index: 80;
            transform: translateY(120%);
            transition: transform 0.4s ease;
            padding: 0.75rem 1rem;
        }
        .float-cta.visible {
            transform: translateY(0);
        }

        .tab-btn {
            padding: 0.6rem 1.25rem;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 8px 8px 0 0;
            color: var(--brand-muted);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .tab-btn:hover {
            color: var(--brand-blue);
            background: #EAF1F9;
        }
        .tab-btn.active {
            color: var(--brand-blue);
            background: #fff;
            border-color: var(--brand-border);
            border-bottom-color: #fff;
            border-radius: 8px 8px 0 0;
            position: relative;
            font-weight: 700;
        }
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--brand-blue);
        }

        .compare-table th {
            background: var(--brand-blue);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.75rem 1rem;
            text-align: left;
            white-space: nowrap;
        }
        .compare-table td {
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--brand-border);
            color: var(--brand-text);
            vertical-align: middle;
        }
        .compare-table tr:nth-child(even) td {
            background: #F9FBFE;
        }
        .compare-table tr:hover td {
            background: #F5F8FC;
        }

        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 248, 252, 0.82);
        }
        .hero-content {
            position: relative;
            z-index: 1;
        }

        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }

        @media (max-width: 767px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
        }
        @media (min-width: 768px) {
            .mobile-menu-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        .grid-bg-overlay {
            position: absolute;
            inset: 0;
            pointer-events: none;
            background-image: radial-gradient(circle, rgba(30, 78, 140, 0.04) 1px, transparent 1px);
            background-size: 22px 22px;
        }

        .avatar-placeholder {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
            flex-shrink: 0;
        }

        .section-title-h2 {
            font-size: clamp(1.4rem, 2vw, 1.8rem);
            font-weight: 700;
            color: var(--brand-text);
            line-height: 1.25;
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--brand-muted);
            max-width: 720px;
            line-height: 1.7;
        }

        .h1-display {
            font-size: clamp(1.8rem, 2.5vw, 2.6rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--brand-text);
        }

/* roulang page: category1 */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: all .2s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--brand-bg);
            color: var(--brand-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--brand-blue);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }
        button, select, input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }
        .card-base {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            border: 1px solid var(--brand-border);
            box-shadow: var(--card-shadow);
            transition: var(--transition-base);
        }
        .card-base:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
        }
        .btn-primary {
            display: inline-block;
            background: var(--brand-blue);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: .75rem 1.5rem;
            font-weight: 600;
            transition: var(--transition-base);
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(15, 46, 82, 0.18);
            transform: translateY(-2px);
            color: #FFFFFF;
            text-decoration: none;
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--brand-blue);
            border: 1px solid var(--brand-blue);
            border-radius: var(--radius-btn);
            padding: .65rem 1.3rem;
            font-weight: 500;
            transition: var(--transition-base);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: #EAF1F9;
            color: var(--brand-blue);
            text-decoration: none;
            transform: translateY(-1px);
        }
        .btn-large {
            padding: 1rem 2.5rem;
            font-size: 1.05rem;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: .45rem 1.1rem;
            border-radius: 999px;
            background: #FFFFFF;
            border: 1px solid var(--brand-border);
            color: var(--brand-muted);
            font-size: .875rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .filter-tag:hover, .filter-tag.active {
            background: var(--brand-blue);
            color: #FFFFFF;
            border-color: var(--brand-blue);
        }
        .filter-tag.active {
            box-shadow: 0 2px 10px rgba(30, 78, 140, 0.2);
        }
        .sort-select {
            padding: .5rem 2.25rem .5rem 1rem;
            border-radius: var(--radius-btn);
            border: 1px solid var(--brand-border);
            background-color: #FFFFFF;
            color: var(--brand-text);
            font-size: .875rem;
            font-weight: 500;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231E4E8C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right .8rem center;
            cursor: pointer;
            transition: var(--transition-base);
        }
        .sort-select:focus {
            outline: none;
            border-color: var(--brand-blue);
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.1);
        }
        .pagination-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: var(--radius-btn);
            border: 1px solid var(--brand-border);
            background: #FFFFFF;
            color: var(--brand-text);
            font-weight: 500;
            font-size: .9rem;
            cursor: pointer;
            transition: var(--transition-base);
        }
        .pagination-number:hover, .pagination-number.active {
            background: var(--brand-blue);
            color: #FFFFFF;
            border-color: var(--brand-blue);
        }
        .hero-category {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 248, 252, 0.82);
            z-index: 1;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .card-span-2 {
            grid-column: span 2;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .card-span-2 {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .card-span-2 {
                grid-column: span 1;
            }
            .hero-category {
                min-height: 280px;
            }
            .container {
                padding-inline: 1rem;
            }
        }

/* roulang page: category2 */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--brand-bg);
            color: var(--brand-text);
            line-height: 1.7;
            font-size: 16px;
        }

        a {
            color: var(--brand-blue);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--brand-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible,
        a:focus-visible,
        select:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }

        .card-base {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            transition: var(--transition-base);
        }

        .card-base:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-blue);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition-base);
            text-decoration: none;
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(15, 46, 82, 0.18);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--brand-blue);
            border: 1px solid var(--brand-blue);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition-base);
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: #EAF1F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
        }

        .btn-large {
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
        }

        .rarity-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .rarity-dot--consumer { background: #B0C3D9; }
        .rarity-dot--industrial { background: #5E98D9; }
        .rarity-dot--milspec { background: #4B69FF; }
        .rarity-dot--restricted { background: #8847FF; }
        .rarity-dot--classified { background: #D32CE6; }
        .rarity-dot--covert { background: #EB4B4B; }
        .rarity-dot--rare { background: #C8892B; }

        .rarity-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-muted);
            transition: var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }

        .rarity-tag:hover,
        .rarity-tag.active {
            border-color: var(--brand-blue);
            color: var(--brand-blue);
            background: #EAF1F9;
        }

        .filter-select {
            height: 44px;
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-btn);
            background: #fff;
            padding: 0 1rem;
            font-size: 0.9rem;
            color: var(--brand-text);
            transition: var(--transition-base);
            cursor: pointer;
            min-width: 140px;
        }

        .filter-select:focus {
            border-color: var(--brand-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.1);
        }

        .data-bar {
            height: 6px;
            border-radius: 999px;
            background: var(--brand-border);
            overflow: hidden;
            position: relative;
        }

        .data-bar-fill {
            height: 100%;
            border-radius: 999px;
            transition: width 0.6s ease;
        }

        .rarity-card-image {
            aspect-ratio: 16/9;
            background: var(--brand-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            position: relative;
        }

        .rarity-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .card-base:hover .rarity-card-image img {
            transform: scale(1.03);
        }

        .rarity-card-image .rarity-badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(4px);
            color: var(--brand-text);
            border: 1px solid var(--brand-border);
        }

        .stat-grid-inline {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            padding: 0.75rem 1.25rem;
            border-bottom: 1px solid var(--brand-border);
            font-size: 0.82rem;
            color: var(--brand-muted);
        }

        .stat-grid-inline span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        .stat-grid-inline strong {
            color: var(--brand-text);
            font-weight: 700;
            font-variant-numeric: tabular-nums;
        }

        .card-content {
            padding: 1.25rem;
        }

        .card-content h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--brand-text);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .card-content p {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.6;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--brand-blue);
            transition: var(--transition-base);
        }

        .card-link:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        .faq-item {
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            margin-bottom: 0.75rem;
            background: #fff;
            transition: var(--transition-base);
            overflow: hidden;
        }

        .faq-item.active {
            border-color: var(--brand-blue);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1rem 1.25rem;
            background: transparent;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--brand-text);
            text-align: left;
            gap: 1rem;
            transition: var(--transition-base);
        }

        .faq-question:hover {
            color: var(--brand-blue);
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            transition: transform 0.3s ease;
            color: var(--brand-muted);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--brand-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            background: var(--brand-bg);
            padding: 0 1.25rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 1rem 1.25rem;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--brand-muted);
            line-height: 1.7;
        }

        .faq-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-bg);
            color: var(--brand-blue);
            font-weight: 700;
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        .faq-item.active .faq-number {
            background: var(--brand-blue);
            color: #fff;
        }

        .form-container {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--table-shadow);
            border: 1px solid var(--brand-border);
            padding: 2.5rem;
        }

        .form-input {
            width: 100%;
            height: 48px;
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-btn);
            padding: 0 1rem;
            font-size: 0.95rem;
            color: var(--brand-text);
            background: #fff;
            transition: var(--transition-base);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--brand-blue);
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.1);
        }

        .form-label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-text);
            margin-bottom: 0.5rem;
        }

        .pagination-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 0.75rem;
            border-radius: var(--radius-btn);
            font-size: 0.9rem;
            font-weight: 600;
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-muted);
            transition: var(--transition-base);
            cursor: pointer;
        }

        .pagination-btn:hover {
            border-color: var(--brand-blue);
            color: var(--brand-blue);
        }

        .pagination-btn.active {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #fff;
        }

        .section-hero-cat {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 3.5rem 0 3rem;
        }

        .section-hero-cat::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 248, 252, 0.86);
        }

        .section-hero-cat .container {
            position: relative;
            z-index: 1;
        }

        .section-hero-cat h1 {
            font-size: clamp(1.8rem, 2.5vw, 2.6rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--brand-dark);
            max-width: 800px;
        }

        .section-hero-cat p {
            font-size: 1.1rem;
            color: var(--brand-muted);
            max-width: 600px;
            margin-top: 0.75rem;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .container {
                padding-inline: 1rem;
            }
            .section-hero-cat {
                padding: 2.5rem 0 2rem;
            }
            .section-hero-cat h1 {
                font-size: 1.5rem;
            }
            .section-hero-cat p {
                font-size: 0.95rem;
            }
            .form-container {
                padding: 1.5rem;
            }
            .stat-grid-inline {
                flex-direction: column;
                gap: 0.35rem;
            }
        }

        @media (max-width: 520px) {
            .section-hero-cat h1 {
                font-size: 1.3rem;
            }
            .rarity-tag {
                font-size: 0.7rem;
                padding: 0.2rem 0.5rem;
                gap: 0.25rem;
            }
            .filter-select {
                width: 100%;
                min-width: auto;
            }
        }

/* roulang page: category3 */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--brand-bg);
            color: var(--brand-text);
            line-height: 1.7;
            font-size: 1rem;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding-inline: 1rem;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #ffffff;
            border-bottom: 1px solid var(--brand-border);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--brand-dark);
            white-space: nowrap;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--brand-blue);
            color: #fff;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }

        .nav-link {
            font-size: 0.9rem;
            color: var(--brand-muted);
            padding: 0.4rem 0.65rem;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition-base);
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--brand-blue);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--brand-blue);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 60%;
        }

        .nav-link.active {
            font-weight: 600;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            color: var(--brand-text);
            flex-direction: column;
            gap: 5px;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 8px;
            transition: var(--transition-base);
        }

        .hamburger:hover {
            background: var(--brand-bg);
        }

        .hamburger-line {
            width: 22px;
            height: 2px;
            background: var(--brand-text);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--brand-border);
            padding: 1rem 1.5rem;
            flex-direction: column;
            gap: 0.35rem;
            box-shadow: 0 10px 30px rgba(15, 46, 82, 0.08);
            z-index: 99;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 0.6rem 0.8rem;
            border-radius: 8px;
            font-size: 0.95rem;
        }

        .mobile-menu .nav-link:hover,
        .mobile-menu .nav-link.active {
            background: var(--brand-bg);
            color: var(--brand-blue);
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }

        /* Hero */
        .hero-category {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 248, 252, 0.82);
            z-index: 1;
        }

        .hero-category .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            padding-top: 2.5rem;
            padding-bottom: 2.5rem;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--brand-blue);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.35rem 0.9rem;
            border-radius: 20px;
            width: fit-content;
            letter-spacing: 0.03em;
        }

        .hero-category h1 {
            font-size: clamp(1.7rem, 2.4vw, 2.4rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--brand-dark);
            max-width: 720px;
        }

        .hero-category .hero-sub {
            font-size: 1rem;
            color: var(--brand-muted);
            max-width: 560px;
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .hero-category {
                min-height: 240px;
            }
            .hero-category h1 {
                font-size: 1.5rem;
            }
        }

        /* 筛选栏 */
        .filter-bar {
            background: #fff;
            border-bottom: 1px solid var(--brand-border);
            padding: 0.9rem 0;
            position: relative;
            z-index: 10;
            box-shadow: 0 2px 8px rgba(15, 46, 82, 0.03);
        }

        .filter-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .filter-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .filter-tag {
            padding: 0.4rem 1rem;
            border-radius: 20px;
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-muted);
            font-size: 0.85rem;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--brand-light);
            color: var(--brand-blue);
            background: #f0f6fc;
        }

        .filter-tag.active {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #fff;
            font-weight: 600;
        }

        .sort-select {
            appearance: none;
            -webkit-appearance: none;
            padding: 0.5rem 2.2rem 0.5rem 1rem;
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234A5A6E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 0.7rem center;
            color: var(--brand-text);
            font-size: 0.85rem;
            cursor: pointer;
            transition: var(--transition-base);
            min-width: 140px;
        }

        .sort-select:focus {
            border-color: var(--brand-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.1);
        }

        /* 卡片网格 */
        .card-grid-section {
            padding: 2.5rem 0 1.5rem;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1.1rem;
            }
        }

        .weapon-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--brand-border);
            box-shadow: var(--card-shadow);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition-base);
            position: relative;
        }

        .weapon-card:hover {
            border-color: var(--brand-blue);
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .weapon-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--brand-bg);
            position: relative;
        }

        .weapon-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .weapon-card:hover .card-img img {
            transform: scale(1.03);
        }

        .weapon-card .card-body {
            padding: 1.1rem 1.25rem 1.25rem;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
            flex: 1;
        }

        .weapon-card .data-row {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.78rem;
            color: var(--brand-muted);
            border-bottom: 1px solid var(--brand-border);
            padding-bottom: 0.55rem;
            flex-wrap: wrap;
        }

        .weapon-card .data-item {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            white-space: nowrap;
        }

        .data-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand-light);
            flex-shrink: 0;
        }

        .data-dot.gold {
            background: var(--brand-gold);
        }

        .data-dot.green {
            background: var(--brand-green);
        }

        .weapon-card .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--brand-text);
            line-height: 1.35;
        }

        .weapon-card .card-desc {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .weapon-card .card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-blue);
            text-align: right;
            transition: var(--transition-base);
            margin-top: auto;
        }

        .weapon-card .card-link:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        /* 首行大卡 */
        .weapon-card.featured {
            grid-column: span 2;
        }

        .weapon-card.featured .card-img {
            aspect-ratio: 16/7;
        }

        .weapon-card.featured .card-title {
            font-size: 1.25rem;
        }

        @media (max-width: 1024px) {
            .weapon-card.featured {
                grid-column: span 2;
            }
        }

        @media (max-width: 640px) {
            .weapon-card.featured {
                grid-column: span 1;
            }
            .weapon-card.featured .card-img {
                aspect-ratio: 16/9;
            }
        }

        /* 分页 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            padding: 1.5rem 0 0;
            flex-wrap: wrap;
        }

        .page-btn {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-muted);
            font-size: 0.88rem;
            cursor: pointer;
            transition: var(--transition-base);
            font-weight: 500;
        }

        .page-btn:hover {
            border-color: var(--brand-light);
            color: var(--brand-blue);
            background: #f0f6fc;
        }

        .page-btn.current {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #fff;
            font-weight: 700;
            cursor: default;
        }

        .page-btn.dots {
            border: none;
            background: none;
            cursor: default;
        }

        /* 品牌介绍 */
        .brand-intro {
            padding: 3rem 0 1rem;
        }

        .brand-intro-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--brand-border);
            box-shadow: var(--card-shadow);
            padding: 2rem 2.2rem;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .brand-intro-card h2 {
            font-size: clamp(1.25rem, 1.8vw, 1.5rem);
            font-weight: 700;
            color: var(--brand-dark);
        }

        .brand-intro-card p {
            color: var(--brand-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* FAQ */
        .faq-section {
            padding: 2.5rem 0 1rem;
        }

        .faq-section .section-heading {
            text-align: left;
            margin-bottom: 1.5rem;
        }

        .section-heading h2 {
            font-size: clamp(1.35rem, 1.8vw, 1.65rem);
            font-weight: 700;
            color: var(--brand-dark);
        }

        .section-heading p {
            color: var(--brand-muted);
            font-size: 0.9rem;
            margin-top: 0.3rem;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--brand-border);
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item.open {
            border-color: var(--brand-blue);
            box-shadow: var(--card-shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            width: 100%;
            text-align: left;
            padding: 1rem 1.25rem;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--brand-text);
            transition: var(--transition-base);
        }

        .faq-question:hover {
            color: var(--brand-blue);
        }

        .faq-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-bg);
            color: var(--brand-blue);
            font-size: 0.8rem;
            font-weight: 700;
            flex-shrink: 0;
            transition: var(--transition-base);
        }

        .faq-item.open .faq-num {
            background: var(--brand-blue);
            color: #fff;
        }

        .faq-arrow {
            margin-left: auto;
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--brand-muted);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--brand-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: var(--brand-bg);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 1rem 1.25rem 1.1rem 3.5rem;
            font-size: 0.9rem;
            color: var(--brand-muted);
            line-height: 1.7;
        }

        @media (max-width: 640px) {
            .faq-answer-inner {
                padding-left: 1.25rem;
            }
        }

        /* CTA 表单 */
        .cta-form-section {
            padding: 3rem 0 2rem;
        }

        .cta-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--table-shadow);
            padding: 2.2rem 2.5rem;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 2rem;
            border: 1px solid var(--brand-border);
        }

        @media (max-width: 768px) {
            .cta-card {
                grid-template-columns: 1fr;
                padding: 1.5rem 1.25rem;
                gap: 1.25rem;
            }
        }

        .cta-left h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.4;
            margin-bottom: 0.5rem;
        }

        .cta-left p {
            color: var(--brand-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .form-field {
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
        }

        .form-field label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--brand-text);
        }

        .form-field input,
        .form-field select {
            height: 46px;
            padding: 0 0.9rem;
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            background: #fff;
            font-size: 0.9rem;
            color: var(--brand-text);
            transition: var(--transition-base);
            appearance: none;
            -webkit-appearance: none;
        }

        .form-field select {
            background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234A5A6E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 0.8rem center;
            padding-right: 2.4rem;
        }

        .form-field input:focus,
        .form-field select:focus {
            border-color: var(--brand-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.1);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-blue);
            color: #fff;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.75rem 2rem;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-base);
            width: 100%;
            letter-spacing: 0.02em;
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(15, 46, 82, 0.18);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .form-disclaimer {
            font-size: 0.76rem;
            color: var(--brand-muted);
            line-height: 1.5;
            text-align: center;
            margin-top: 0.25rem;
        }

        /* 页脚 */
        .site-footer {
            background: var(--brand-dark);
            color: #c8d6e8;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }

        .site-footer .container {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 2rem;
        }

        @media (max-width: 768px) {
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: #a8bad0;
        }

        .footer-nav {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }

        .footer-nav h3 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.4rem;
        }

        .footer-nav a {
            color: #a8bad0;
            font-size: 0.85rem;
            transition: var(--transition-base);
        }

        .footer-nav a:hover {
            color: #fff;
        }

        .footer-disclaimer {
            font-size: 0.82rem;
            line-height: 1.7;
            color: #a8bad0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 2rem;
            padding-top: 1rem;
            text-align: center;
            font-size: 0.78rem;
            color: #8ba0b8;
        }

        @media (max-width: 640px) {
            .site-footer {
                padding: 2rem 0 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: 0.25s ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--brand-bg);
            color: var(--brand-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding-inline: 1rem;
            }
        }

        /* 分类页 Hero 独有样式 */
        .category-hero {
            position: relative;
            min-height: 380px;
            padding: 4rem 0 3rem;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 248, 252, 0.88);
            z-index: 1;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .category-hero h1 {
            font-size: clamp(1.8rem, 2.5vw, 2.4rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--brand-dark);
            max-width: 740px;
        }

        .category-hero .subtitle {
            font-size: 1.05rem;
            color: var(--brand-muted);
            margin-top: 0.8rem;
            max-width: 560px;
            line-height: 1.65;
        }

        /* 筛选栏 */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--brand-border);
            margin-bottom: 2rem;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-muted);
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition-base);
            user-select: none;
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--brand-light);
            color: var(--brand-blue);
            background: #EAF1F9;
        }

        .filter-tag.active {
            background: var(--brand-blue);
            color: #fff;
            border-color: var(--brand-blue);
        }

        .sort-select {
            padding: 0.45rem 2rem 0.45rem 0.9rem;
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%234A5A6E' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 0.8rem center;
            appearance: none;
            -webkit-appearance: none;
            color: var(--brand-text);
            font-size: 0.85rem;
            cursor: pointer;
            min-width: 150px;
            transition: border-color var(--transition-base);
        }

        .sort-select:focus {
            border-color: var(--brand-blue);
            box-shadow: 0 0 0 3px rgba(30, 78, 140, 0.12);
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
            margin-bottom: 2rem;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }

        .wear-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--brand-border);
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .wear-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
            transform: translateY(-3px);
        }

        .wear-card .thumb {
            aspect-ratio: 16/9;
            background: var(--brand-bg);
            overflow: hidden;
            position: relative;
        }

        .wear-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .wear-card:hover .thumb img {
            transform: scale(1.03);
        }

        .wear-card .card-body {
            padding: 1.25rem 1.35rem 1.35rem;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 0.7rem;
        }

        .wear-card .data-row {
            display: flex;
            align-items: center;
            gap: 0.9rem;
            font-size: 0.78rem;
            color: var(--brand-muted);
            padding-bottom: 0.7rem;
            border-bottom: 1px solid var(--brand-border);
            flex-wrap: wrap;
        }

        .wear-card .data-row span {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        .wear-card .data-row .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }

        .wear-card .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--brand-text);
            line-height: 1.4;
        }

        .wear-card .desc {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.55;
            flex: 1;
        }

        .wear-card .card-link {
            align-self: flex-end;
            color: var(--brand-blue);
            font-size: 0.88rem;
            font-weight: 600;
            transition: color var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .wear-card .card-link:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        .wear-card.span-2 {
            grid-column: span 2;
        }

        @media (max-width: 1024px) {
            .wear-card.span-2 {
                grid-column: span 1;
            }
        }

        /* 磨损等级颜色标识 */
        .wear-fn { background: #3E7A5E; }
        .wear-mw { background: #6B8F5E; }
        .wear-ft { background: #C8892B; }
        .wear-ww { background: #B84A4A; }
        .wear-bs { background: #7A3B3B; }

        /* 对比表格 */
        .compare-section {
            padding: 3rem 0;
        }

        .compare-wrap {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--table-shadow);
            overflow: hidden;
            border: 1px solid var(--brand-border);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
            min-width: 640px;
        }

        .compare-table thead {
            background: var(--brand-blue);
            color: #fff;
        }

        .compare-table th {
            padding: 0.85rem 1.1rem;
            text-align: left;
            font-weight: 600;
            font-size: 0.82rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .compare-table td {
            padding: 0.9rem 1.1rem;
            border-bottom: 1px solid #EEF3F8;
            color: var(--brand-text);
            vertical-align: middle;
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr:hover {
            background: #FAFBFD;
        }

        .bar-cell {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            min-width: 180px;
        }

        .bar-track {
            flex: 1;
            height: 8px;
            background: #EDF2F7;
            border-radius: 4px;
            overflow: hidden;
        }

        .bar-fill {
            height: 100%;
            border-radius: 4px;
            background: var(--brand-light);
            transition: width 0.6s ease;
        }

        .bar-fill.fn { background: #3E7A5E; }
        .bar-fill.mw { background: #6B8F5E; }
        .bar-fill.ft { background: #C8892B; }
        .bar-fill.ww { background: #B84A4A; }
        .bar-fill.bs { background: #7A3B3B; }

        .conclusion-row {
            background: #F5F8FC;
            padding: 0.9rem 1.1rem;
            font-size: 0.85rem;
            color: var(--brand-dark);
            border-top: 1px solid var(--brand-border);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
        }

        .conclusion-row .icon {
            color: var(--brand-gold);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* 品牌介绍 */
        .brand-intro {
            padding: 3rem 0;
        }

        .brand-intro .intro-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            padding: 2rem 2.25rem;
        }

        .brand-intro .intro-card p {
            color: var(--brand-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .brand-intro .intro-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--brand-dark);
            margin-bottom: 1rem;
        }

        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            padding: 1.5rem 0 2rem;
            flex-wrap: wrap;
        }

        .pagination button,
        .pagination a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 0.6rem;
            border-radius: 8px;
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-text);
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition-base);
            font-weight: 500;
        }

        .pagination .current {
            background: var(--brand-blue);
            color: #fff;
            border-color: var(--brand-blue);
            font-weight: 700;
        }

        .pagination button:hover:not(.current),
        .pagination a:hover:not(.current) {
            border-color: var(--brand-blue);
            color: var(--brand-blue);
            background: #EAF1F9;
        }

        .pagination .dots {
            border: none;
            background: transparent;
            cursor: default;
            color: var(--brand-muted);
        }

        /* 隐藏卡片 */
        .wear-card.hidden {
            display: none;
        }

        /* CTA 区块 */
        .cta-section {
            padding: 3.5rem 0;
            background: #EAF1F9;
            border-radius: 16px;
            margin: 2rem 0;
        }

        .cta-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 1rem;
        }

        .cta-inner h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--brand-dark);
        }

        .cta-inner p {
            color: var(--brand-muted);
            max-width: 480px;
            font-size: 0.92rem;
        }

        /* 响应式表格滚动 */
        @media (max-width: 768px) {
            .compare-table-wrap {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .compare-table {
                min-width: 640px;
            }
        }

        @media (max-width: 640px) {
            .category-hero {
                min-height: 300px;
                padding: 3rem 0 2rem;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .brand-intro .intro-card {
                padding: 1.5rem 1.25rem;
            }
        }

/* roulang page: category5 */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: all 0.25s ease;
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--brand-text);
            background-color: var(--brand-bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--brand-blue);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--brand-dark);
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding-inline: 1rem;
            }
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--brand-border);
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.2s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(15, 46, 82, 0.08);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 1rem;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--brand-blue);
            white-space: nowrap;
            text-decoration: none;
        }

        .logo-link:hover {
            color: var(--brand-dark);
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--brand-blue);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 16px;
            height: 16px;
            fill: #FFFFFF;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.85rem;
            border-radius: 6px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--brand-muted);
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition-base);
            border: 1px solid transparent;
        }

        .nav-links a:hover {
            color: var(--brand-blue);
            background: #F0F5FB;
            border-color: var(--brand-border);
        }

        .nav-links a.active {
            color: #FFFFFF;
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            box-shadow: 0 4px 12px rgba(30, 78, 140, 0.2);
        }

        .nav-links a .nav-slug-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand-light);
            margin-left: 0.35rem;
            opacity: 0.75;
        }

        .nav-links a.active .nav-slug-dot {
            background: #FFFFFF;
            opacity: 1;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: 1px solid var(--brand-border);
            border-radius: 6px;
            padding: 0.5rem 0.6rem;
            color: var(--brand-blue);
            font-size: 1.2rem;
            line-height: 1;
            align-items: center;
            justify-content: center;
        }

        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: #FFFFFF;
            border-bottom: 1px solid var(--brand-border);
            box-shadow: 0 12px 28px rgba(15, 46, 82, 0.10);
            padding: 0.75rem 1rem;
            z-index: 99;
        }

        .mobile-menu-panel.open {
            display: block;
        }

        .mobile-menu-panel a {
            display: block;
            padding: 0.65rem 0.8rem;
            border-radius: 6px;
            color: var(--brand-muted);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .mobile-menu-panel a:hover {
            background: #F0F5FB;
            color: var(--brand-blue);
        }

        .mobile-menu-panel a.active {
            background: var(--brand-blue);
            color: #FFFFFF;
        }

        @media (max-width: 900px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
        }

        /* Hero */
        .page-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            padding: 3.5rem 0;
            background-color: var(--brand-bg);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 248, 252, 0.88);
            z-index: 1;
        }

        .page-hero > .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        .page-hero h1 {
            font-size: clamp(1.7rem, 2.5vw, 2.3rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--brand-text);
            margin: 0 0 1rem 0;
        }

        .page-hero .hero-subtitle {
            font-size: 1.05rem;
            line-height: 1.6;
            color: var(--brand-muted);
            max-width: 520px;
            margin: 0;
        }

        .hero-mini-card {
            background: rgba(255, 255, 255, 0.92);
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            box-shadow: var(--card-shadow);
            backdrop-filter: blur(4px);
        }

        .hero-mini-card h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--brand-blue);
            margin: 0 0 0.75rem 0;
        }

        .hero-mini-bar-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.5rem;
            font-size: 0.78rem;
            color: var(--brand-muted);
        }

        .hero-mini-bar-label {
            width: 50px;
            flex-shrink: 0;
            font-weight: 500;
        }

        .hero-mini-bar-track {
            flex: 1;
            height: 8px;
            background: var(--brand-border);
            border-radius: 4px;
            overflow: hidden;
        }

        .hero-mini-bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 0.6s ease;
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: auto;
                padding: 2.5rem 0;
            }
            .page-hero > .container {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* Filter bar */
        .filter-bar {
            background: #FFFFFF;
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-card);
            padding: 0.9rem 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            box-shadow: var(--card-shadow);
        }

        .filter-tags {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .filter-tag {
            padding: 0.4rem 0.9rem;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid var(--brand-border);
            background: #FFFFFF;
            color: var(--brand-muted);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--brand-light);
            color: var(--brand-blue);
            background: #F0F5FB;
        }

        .filter-tag.active {
            background: var(--brand-blue);
            border-color: var(--brand-blue);
            color: #FFFFFF;
        }

        .sort-select {
            width: 150px;
            height: 40px;
            border: 1px solid var(--brand-border);
            border-radius: 6px;
            background: #FFFFFF;
            color: var(--brand-text);
            font-size: 0.85rem;
            padding: 0 0.75rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .sort-select:focus {
            border-color: var(--brand-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(59, 130, 196, 0.15);
        }

        /* Card grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .card-span-2 {
            grid-column: span 2;
        }

        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-span-2 {
                grid-column: span 2;
            }
        }

        @media (max-width: 640px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .card-span-2 {
                grid-column: span 1;
            }
        }

        .prob-card {
            background: #FFFFFF;
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .prob-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
            transform: translateY(-2px);
        }

        .prob-card-image {
            aspect-ratio: 16/9;
            background: var(--brand-bg);
            position: relative;
            overflow: hidden;
            flex-shrink: 0;
        }

        .prob-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .prob-card:hover .prob-card-image img {
            transform: scale(1.03);
        }

        .prob-card-body {
            padding: 1.25rem 1.25rem 1rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .prob-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--brand-text);
            margin: 0 0 0.4rem 0;
        }

        .prob-card .card-desc {
            font-size: 0.85rem;
            color: var(--brand-muted);
            line-height: 1.55;
            margin: 0 0 0.8rem 0;
            min-height: 2.6em;
        }

        .prob-bars {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
            margin-bottom: 0.8rem;
        }

        .prob-bar-row {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.75rem;
            color: var(--brand-muted);
        }

        .prob-bar-label {
            width: 44px;
            flex-shrink: 0;
            font-weight: 500;
            text-align: right;
        }

        .prob-bar-track {
            flex: 1;
            height: 7px;
            background: var(--brand-border);
            border-radius: 4px;
            overflow: hidden;
        }

        .prob-bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 0.5s ease;
        }

        .prob-bar-pct {
            width: 48px;
            flex-shrink: 0;
            font-weight: 600;
            font-variant-numeric: tabular-nums;
            color: var(--brand-text);
            text-align: left;
        }

        .card-data-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: var(--brand-muted);
            border-top: 1px solid var(--brand-border);
            padding-top: 0.6rem;
            margin-top: auto;
            flex-wrap: wrap;
        }

        .card-data-row span {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        .card-data-row .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .card-link {
            display: inline-block;
            margin-top: 0.7rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-blue);
            text-align: right;
            align-self: flex-end;
            transition: var(--transition-base);
        }

        .card-link:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        /* Data dashboard section */
        .dashboard-section {
            background: #FFFFFF;
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-card);
            box-shadow: var(--table-shadow);
            padding: 2rem 1.5rem;
            margin-top: 2.5rem;
        }

        .dashboard-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--brand-text);
            margin: 0 0 0.3rem 0;
        }

        .dashboard-desc {
            font-size: 0.9rem;
            color: var(--brand-muted);
            margin: 0 0 1.25rem 0;
        }

        .dashboard-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
        }

        .dashboard-table th {
            background: var(--brand-blue);
            color: #FFFFFF;
            font-weight: 600;
            text-align: left;
            padding: 0.7rem 0.9rem;
            white-space: nowrap;
        }

        .dashboard-table td {
            padding: 0.7rem 0.9rem;
            border-bottom: 1px solid var(--brand-border);
            color: var(--brand-text);
            vertical-align: middle;
        }

        .dashboard-table tr:last-child td {
            border-bottom: none;
        }

        .dashboard-table tr:hover td {
            background: #F9FBFE;
        }

        .table-bar {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            width: 100%;
        }

        .table-bar-track {
            flex: 1;
            min-width: 60px;
            height: 8px;
            background: var(--brand-border);
            border-radius: 4px;
            overflow: hidden;
        }

        .table-bar-fill {
            height: 100%;
            border-radius: 4px;
        }

        .table-pct {
            font-weight: 600;
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
        }

        .conclusion-row {
            background: #F0F5FB !important;
            border-top: 2px solid var(--brand-light);
        }

        .conclusion-row td {
            color: var(--brand-blue) !important;
            font-weight: 600;
            font-size: 0.86rem;
            padding: 0.85rem 0.9rem;
        }

        /* FAQ */
        .faq-container {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            padding: 1.75rem 2rem;
        }

        .faq-item {
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:last-child {
            margin-bottom: 0;
        }

        .faq-item.open {
            border-color: var(--brand-blue);
            box-shadow: 0 4px 14px rgba(30, 78, 140, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            padding: 1rem 1.15rem;
            background: #FFFFFF;
            border: none;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--brand-text);
            text-align: left;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .faq-question .faq-num {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--brand-bg);
            color: var(--brand-blue);
            font-size: 0.75rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item.open .faq-question .faq-num {
            background: var(--brand-blue);
            color: #FFFFFF;
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--brand-muted);
            transition: transform 0.3s ease;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }

        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            color: var(--brand-blue);
        }

        .faq-answer {
            display: none;
            padding: 0.9rem 1.15rem 1.1rem;
            background: var(--brand-bg);
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.65;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Form */
        .cta-form-section {
            background: var(--brand-bg);
            border-radius: var(--radius-card);
            padding: 2.5rem 2rem;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--brand-blue);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            gap: 2rem;
            align-items: start;
        }

        .form-intro h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--brand-text);
            margin: 0 0 0.6rem 0;
        }

        .form-intro p {
            font-size: 0.9rem;
            color: var(--brand-muted);
            margin: 0;
            line-height: 1.65;
        }

        .form-fields {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .form-field label {
            display: block;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--brand-text);
            margin-bottom: 0.35rem;
        }

        .form-field input,
        .form-field select {
            width: 100%;
            height: 48px;
            border: 1px solid var(--brand-border);
            border-radius: 6px;
            background: #FFFFFF;
            padding: 0 0.9rem;
            font-size: 0.88rem;
            color: var(--brand-text);
            transition: var(--transition-base);
            appearance: none;
        }

        .form-field input:focus,
        .form-field select:focus {
            border-color: var(--brand-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(59, 130, 196, 0.15);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-blue);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.7rem 1.5rem;
            font-size: 0.92rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(15, 46, 82, 0.18);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-large {
            padding: 0.85rem 2rem;
            font-size: 0.98rem;
        }

        .form-disclaimer {
            font-size: 0.75rem;
            color: var(--brand-muted);
            margin-top: 0.75rem;
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .form-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .faq-container {
                padding: 1.25rem 1rem;
            }
            .dashboard-section {
                padding: 1.5rem 1rem;
                overflow-x: auto;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--brand-dark);
            color: #B8C7D9;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }

        .footer-brand .logo-link {
            color: #FFFFFF;
            font-size: 1.1rem;
        }

        .footer-brand .logo-link:hover {
            color: #D0E0F0;
        }

        .footer-brand p {
            font-size: 0.82rem;
            color: #93A7BC;
            margin-top: 0.6rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 0.6rem 0;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            font-size: 0.82rem;
            color: #B8C7D9;
            padding: 0.3rem 0;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: #FFFFFF;
            padding-left: 0.3rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(184, 199, 217, 0.2);
            margin-top: 1.8rem;
            padding-top: 1rem;
            font-size: 0.78rem;
            color: #93A7BC;
            text-align: center;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* Brand intro section */
        .brand-intro-section {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            border: 1px solid var(--brand-border);
            box-shadow: var(--card-shadow);
            padding: 2rem 1.5rem;
            margin-top: 2.5rem;
        }

        .brand-intro-section h2 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--brand-text);
            margin: 0 0 0.8rem 0;
        }

        .brand-intro-section p {
            font-size: 0.9rem;
            color: var(--brand-muted);
            line-height: 1.75;
            margin: 0 0 0.6rem 0;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
            text-decoration: none;
        }

        .pagination a {
            background: #FFFFFF;
            color: var(--brand-blue);
            border: 1px solid var(--brand-border);
        }

        .pagination a:hover {
            border-color: var(--brand-blue);
            background: #F0F5FB;
            color: var(--brand-dark);
        }

        .pagination .current {
            background: var(--brand-blue);
            color: #FFFFFF;
            border: 1px solid var(--brand-blue);
            box-shadow: 0 4px 12px rgba(30, 78, 140, 0.2);
        }

        .pagination .dots {
            color: var(--brand-muted);
            border: none;
            background: none;
        }

        /* Section spacing */
        .section-pad {
            padding: 2.5rem 0;
        }

        .section-title {
            font-size: clamp(1.35rem, 2vw, 1.7rem);
            font-weight: 700;
            color: var(--brand-text);
            margin: 0 0 0.6rem 0;
        }

        .section-desc {
            font-size: 0.92rem;
            color: var(--brand-muted);
            margin: 0 0 1.5rem 0;
            max-width: 680px;
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .section-pad {
                padding: 1.75rem 0;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
        }

/* roulang page: category6 */
:root {
            --brand-blue: #1E4E8C;
            --brand-dark: #0F2E52;
            --brand-light: #3B82C4;
            --brand-bg: #F5F8FC;
            --brand-text: #1A2332;
            --brand-muted: #4A5A6E;
            --brand-border: #E2EAF3;
            --brand-gold: #C8892B;
            --brand-red: #B84A4A;
            --brand-green: #3E7A5E;
            --card-shadow: 0 4px 20px rgba(15, 46, 82, 0.05);
            --card-shadow-hover: 0 10px 32px rgba(15, 46, 82, 0.10);
            --table-shadow: 0 8px 28px rgba(15, 46, 82, 0.07);
            --radius-card: 12px;
            --radius-btn: 8px;
            --transition-base: all 0.25s ease;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--brand-text);
            background-color: var(--brand-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1.5rem;
        }

        .card-base {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            transition: var(--transition-base);
        }

        .card-base:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--brand-blue);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.5rem;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            border: 1px solid var(--brand-blue);
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            box-shadow: 0 6px 18px rgba(15, 46, 82, 0.18);
            transform: translateY(-2px);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(30, 78, 140, 0.35);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--brand-blue);
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.5rem;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            border: 1px solid var(--brand-blue);
        }

        .btn-secondary:hover {
            background: #EAF1F9;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(30, 78, 140, 0.12);
        }

        .btn-large {
            padding: 0.9rem 2rem;
            font-size: 1.05rem;
        }

        .nav-link {
            color: var(--brand-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-blue);
        }

        .metric-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 1.5rem;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            transition: var(--transition-base);
        }

        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-light);
        }

        .faq-item {
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition-base);
            background: #fff;
        }

        .faq-item.active {
            border-color: var(--brand-blue);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.25rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--brand-text);
            gap: 1rem;
            background: #fff;
            transition: var(--transition-base);
        }

        .faq-question:hover {
            color: var(--brand-blue);
        }

        .faq-question .arrow {
            flex-shrink: 0;
            transition: transform 0.25s ease;
            color: var(--brand-muted);
            font-size: 0.75rem;
        }

        .faq-item.active .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--brand-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.25s ease;
            background: var(--brand-bg);
            padding: 0 1.25rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 1rem 1.25rem;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--brand-muted);
            line-height: 1.7;
        }

        /* ===== 分类页6独有样式 ===== */
        .tool-wall-hero {
            min-height: 480px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            display: flex;
            align-items: center;
            padding: 3rem 0 2.5rem;
        }

        .tool-wall-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(245, 248, 252, 0.85);
            z-index: 1;
        }

        .tool-wall-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .tool-wall-inner {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 3rem;
            align-items: center;
        }

        .tool-wall-left h1 {
            font-size: clamp(1.8rem, 2.5vw, 2.6rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--brand-text);
            margin-bottom: 1rem;
            letter-spacing: -0.015em;
        }

        .tool-wall-left .hero-sub {
            font-size: 1.05rem;
            color: var(--brand-muted);
            line-height: 1.6;
            max-width: 460px;
            margin-bottom: 1.5rem;
        }

        .tool-wall-left .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.35rem 0.85rem;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--brand-border);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--brand-muted);
        }

        .tool-wall-right {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .main-tool-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: 0 8px 32px rgba(15, 46, 82, 0.09);
            border: 2px solid var(--brand-blue);
            padding: 1.75rem;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .main-tool-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--brand-blue);
        }

        .main-tool-card .tool-icon-lg {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 10px;
            background: rgba(30, 78, 140, 0.08);
            color: var(--brand-blue);
            margin-bottom: 0.75rem;
        }

        .main-tool-card h2 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--brand-text);
            margin-bottom: 0.5rem;
        }

        .main-tool-card p {
            font-size: 0.9rem;
            color: var(--brand-muted);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .main-tool-card .main-tool-actions {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .main-tool-card .btn-primary {
            padding: 0.7rem 1.5rem;
            font-size: 0.95rem;
        }

        .main-tool-card .btn-secondary {
            padding: 0.7rem 1.2rem;
            font-size: 0.9rem;
        }

        .tool-mini-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.75rem;
        }

        .tool-mini-entry {
            background: rgba(255, 255, 255, 0.75);
            border: 1px solid var(--brand-border);
            border-radius: 10px;
            padding: 0.75rem 0.85rem;
            text-align: center;
            transition: var(--transition-base);
            cursor: pointer;
            backdrop-filter: blur(4px);
        }

        .tool-mini-entry:hover {
            border-color: var(--brand-light);
            background: #fff;
            box-shadow: 0 4px 16px rgba(15, 46, 82, 0.08);
            transform: translateY(-2px);
        }

        .tool-mini-entry .mini-icon {
            display: flex;
            justify-content: center;
            margin-bottom: 0.35rem;
            color: var(--brand-blue);
        }

        .tool-mini-entry span {
            display: block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--brand-text);
            line-height: 1.3;
        }

        /* 筛选栏 */
        .filter-bar {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            padding: 1rem 1.5rem;
            margin-top: -1.5rem;
            position: relative;
            z-index: 3;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .filter-tag {
            padding: 0.4rem 1.1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--brand-muted);
            border: 1px solid var(--brand-border);
            background: #fff;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--brand-light);
            color: var(--brand-blue);
        }

        .filter-tag.active {
            background: var(--brand-blue);
            color: #fff;
            border-color: var(--brand-blue);
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--brand-muted);
        }

        .filter-sort select {
            padding: 0.45rem 1rem;
            border: 1px solid var(--brand-border);
            border-radius: 6px;
            font-size: 0.85rem;
            color: var(--brand-text);
            background: #fff;
            cursor: pointer;
            transition: var(--transition-base);
            appearance: auto;
        }

        .filter-sort select:focus {
            outline: 2px solid rgba(30, 78, 140, 0.35);
            outline-offset: 2px;
            border-color: var(--brand-blue);
        }

        /* 工具卡片网格 */
        .tool-grid-section {
            padding: 3rem 0 2rem;
        }

        .tool-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .tool-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            transition: var(--transition-base);
            position: relative;
        }

        .tool-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--brand-blue);
            transform: translateY(-3px);
        }

        .tool-card.span-2 {
            grid-column: span 2;
        }

        .tool-card .tool-card-top {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            margin-bottom: 0.85rem;
        }

        .tool-card .tool-card-icon {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(30, 78, 140, 0.07);
            color: var(--brand-blue);
        }

        .tool-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--brand-text);
            line-height: 1.35;
        }

        .tool-card .tool-card-desc {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.6;
            margin-bottom: 0.85rem;
            flex-grow: 1;
        }

        .tool-card .tool-data-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 0.6rem 0;
            border-top: 1px solid var(--brand-border);
            border-bottom: 1px solid var(--brand-border);
            margin-bottom: 0.85rem;
            font-size: 0.8rem;
            color: var(--brand-muted);
        }

        .tool-data-row span {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .tool-data-row .data-label {
            color: var(--brand-muted);
        }
        .tool-data-row .data-value {
            font-weight: 700;
            color: var(--brand-text);
            font-variant-numeric: tabular-nums;
        }

        .tool-card .btn-secondary {
            width: 100%;
            padding: 0.6rem 1rem;
            font-size: 0.88rem;
            justify-content: center;
        }

        .tool-card.span-2 .btn-secondary {
            width: auto;
            min-width: 180px;
        }

        /* 使用流程 */
        .steps-section {
            padding: 3.5rem 0;
            background: #fff;
            border-top: 1px solid var(--brand-border);
            border-bottom: 1px solid var(--brand-border);
        }

        .section-heading {
            text-align: center;
            margin-bottom: 2rem;
        }

        .section-heading h2 {
            font-size: clamp(1.4rem, 2vw, 1.8rem);
            font-weight: 700;
            color: var(--brand-text);
        }

        .section-heading p {
            color: var(--brand-muted);
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .step-card {
            text-align: center;
            padding: 1.5rem 1rem;
        }

        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--brand-blue);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--brand-text);
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.6;
        }

        /* 品牌介绍 + 数据说明 */
        .brand-notice-section {
            padding: 3.5rem 0;
        }

        .brand-notice-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--brand-border);
            padding: 2rem 2.5rem;
            display: grid;
            grid-template-columns: 1fr 0.35fr;
            gap: 2rem;
            align-items: start;
        }

        .brand-notice-left h2 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--brand-text);
            margin-bottom: 0.75rem;
        }

        .brand-notice-left p {
            font-size: 0.92rem;
            color: var(--brand-muted);
            line-height: 1.7;
        }

        .brand-notice-right {
            background: var(--brand-bg);
            border-radius: 8px;
            padding: 1.25rem 1.5rem;
            border-left: 3px solid var(--brand-blue);
        }

        .brand-notice-right h3 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-text);
            margin-bottom: 0.5rem;
        }

        .brand-notice-right p {
            font-size: 0.82rem;
            color: var(--brand-muted);
            line-height: 1.6;
        }

        /* 底部CTA */
        .bottom-cta-section {
            padding: 3rem 0 4rem;
        }

        .bottom-cta-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: 0 8px 28px rgba(15, 46, 82, 0.08);
            border: 1px solid var(--brand-border);
            padding: 2.5rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .bottom-cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--brand-blue);
        }

        .bottom-cta-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--brand-text);
            margin-bottom: 0.75rem;
        }

        .bottom-cta-card p {
            font-size: 0.95rem;
            color: var(--brand-muted);
            margin-bottom: 1.5rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .bottom-cta-card .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.75rem;
        }

        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 0.4rem;
            margin-top: 2.5rem;
            flex-wrap: wrap;
        }

        .page-btn {
            min-width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            border: 1px solid var(--brand-border);
            background: #fff;
            color: var(--brand-text);
        }

        .page-btn:hover {
            border-color: var(--brand-blue);
            color: var(--brand-blue);
            background: #F5F8FC;
        }

        .page-btn.active {
            background: var(--brand-blue);
            color: #fff;
            border-color: var(--brand-blue);
        }

        .page-btn.prev,
        .page-btn.next {
            padding: 0 1rem;
            font-size: 0.85rem;
            color: var(--brand-muted);
        }

        .page-btn.prev:hover,
        .page-btn.next:hover {
            color: var(--brand-blue);
            border-color: var(--brand-blue);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .tool-wall-inner {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .tool-wall-left .hero-sub {
                max-width: 100%;
            }

            .tool-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tool-card.span-2 {
                grid-column: span 2;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }

            .brand-notice-card {
                grid-template-columns: 1fr;
                padding: 1.75rem;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-inline: 1rem;
            }

            .tool-wall-hero {
                min-height: auto;
                padding: 2.5rem 0 2rem;
            }

            .tool-wall-left h1 {
                font-size: 1.6rem;
            }

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                padding: 1rem;
                margin-top: -1rem;
            }

            .filter-tags {
                flex-wrap: wrap;
                justify-content: flex-start;
            }

            .filter-sort {
                justify-content: space-between;
            }

            .tool-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .tool-card.span-2 {
                grid-column: span 1;
            }

            .tool-mini-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.5rem;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .brand-notice-card {
                padding: 1.5rem 1.25rem;
            }

            .bottom-cta-card {
                padding: 2rem 1.25rem;
            }

            .pagination {
                gap: 0.25rem;
            }

            .page-btn {
                min-width: 36px;
                height: 36px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .tool-mini-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .main-tool-card {
                padding: 1.25rem;
            }

            .main-tool-card .btn-primary,
            .main-tool-card .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .main-tool-card .main-tool-actions {
                flex-direction: column;
            }

            .tool-card {
                padding: 1.25rem;
            }

            .hero-tag {
                font-size: 0.75rem;
                padding: 0.3rem 0.7rem;
            }

            .filter-tag {
                font-size: 0.78rem;
                padding: 0.35rem 0.9rem;
            }
        }