/* roulang page: index */
:root {
            --steel-blue: #2C5F8A;
            --steel-deep: #1F476A;
            --night-blue: #16293D;
            --tactical-orange: #E17A28;
            --deep-orange: #C8661F;
            --alert-red: #C84C3C;
            --page-bg: #F2F6FA;
            --section-white: #FFFFFF;
            --section-alt: #EDF3F9;
            --card-bg: #FFFFFF;
            --card-border: #D9E3ED;
            --card-shadow: 0 8px 24px rgba(22,41,61,.06);
            --card-shadow-hover: 0 18px 40px rgba(22,41,61,.12);
            --text-primary: #1B2A38;
            --text-secondary: #5A6E80;
            --text-weak: #8196A8;
            --success-green: #2E8B6A;
            --warning-amber: #C98A1B;
            --grid-line: rgba(44,95,138,.12);
            --font-sans: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
            --font-mono: 'SF Mono','Roboto Mono','Consolas',monospace;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-badge: 4px;
            --radius-chip: 999px;
            --tactical-notch: 6px;
            --section-padding: 72px 0;
            --container-max: 1180px;
            --focus-ring: 0 0 0 3px rgba(44,95,138,.25);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--page-bg);
        }
        a { text-decoration: none; color: var(--steel-blue); transition: all .2s ease; }
        a:hover { color: var(--steel-deep); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }
        .section-pt { padding: var(--section-padding); }
        .bg-white { background-color: var(--section-white); }
        .bg-alt { background-color: var(--section-alt); }
        .bg-dark { background-color: var(--night-blue); }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: .75rem;
            position: relative;
            padding-left: 16px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background-color: var(--tactical-orange);
            border-radius: 2px;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 760px;
            margin-bottom: 2rem;
        }
        .btn { border-radius: var(--radius-btn); font-weight: 600; padding: 10px 22px; transition: all .25s ease; }
        .btn:focus { outline: none; box-shadow: var(--focus-ring); }
        .btn-primary-tactical {
            background-color: var(--tactical-orange);
            border: none;
            color: #fff;
            font-size: 15px;
            padding: 12px 28px;
        }
        .btn-primary-tactical:hover { background-color: var(--deep-orange); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 18px rgba(225,122,40,.35); }
        .btn-primary-tactical:active { background-color: var(--deep-orange); transform: translateY(1px); box-shadow: 0 3px 10px rgba(225,122,40,.3); }
        .btn-outline-steel {
            background-color: transparent;
            border: 1.5px solid var(--steel-blue);
            color: var(--steel-blue);
            font-size: 15px;
            padding: 12px 28px;
        }
        .btn-outline-steel:hover { background-color: rgba(44,95,138,.08); color: var(--steel-deep); border-color: var(--steel-deep); transform: translateY(-1px); }
        .btn-ghost-light {
            background-color: transparent;
            border: 1.5px solid rgba(255,255,255,.7);
            color: #fff;
            font-size: 15px;
            padding: 12px 28px;
        }
        .btn-ghost-light:hover { background-color: rgba(255,255,255,.15); color: #fff; border-color: #fff; transform: translateY(-1px); }
        .badge-chip {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
            line-height: 1.4;
        }
        .badge-orange { background-color: rgba(225,122,40,.15); color: var(--tactical-orange); }
        .badge-green { background-color: rgba(46,139,106,.15); color: var(--success-green); }
        .badge-blue { background-color: rgba(44,95,138,.15); color: var(--steel-blue); }
        .chip {
            display: inline-block;
            background-color: var(--section-white);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-chip);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .2s ease;
            cursor: default;
        }
        .chip:hover {
            background-color: rgba(44,95,138,.08);
            border-color: var(--steel-blue);
            color: var(--steel-blue);
        }
        .chip-selected {
            background-color: var(--steel-blue);
            border-color: var(--steel-blue);
            color: #fff;
        }
        .card-tactical {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            position: relative;
            overflow: hidden;
            transition: all .3s ease;
        }
        .card-tactical::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 0;
            height: 0;
            border-style: solid;
            border-width: 0 var(--tactical-notch) var(--tactical-notch) 0;
            border-color: transparent var(--tactical-orange) transparent transparent;
            opacity: .7;
        }
        .card-tactical:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .stat-card {
            background-color: rgba(255,255,255,.06);
            border: 1px solid rgba(255,255,255,.15);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            text-align: center;
            backdrop-filter: blur(4px);
        }
        .stat-card .stat-number {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            letter-spacing: -.5px;
        }
        .stat-card .stat-unit {
            font-size: 12px;
            color: rgba(255,255,255,.65);
            margin-left: 4px;
        }
        .stat-card .stat-label {
            font-size: 12px;
            color: rgba(255,255,255,.6);
            margin-top: 6px;
            text-transform: uppercase;
            letter-spacing: .5px;
        }
        .card-img-top { border-radius: var(--radius-card) var(--radius-card) 0 0; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .card-body-tactical { padding: 18px 20px 20px; }
        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: .5rem;
            color: var(--text-primary);
        }
        .card-text {
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: .75rem;
        }
        .card-link {
            font-size: .875rem;
            font-weight: 600;
            color: var(--steel-blue);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link:hover { color: var(--steel-deep); gap: 10px; }
        .card-link .arrow { transition: transform .2s ease; }
        .card-link:hover .arrow { transform: translateX(4px); }
        .nav-tactical {
            background-color: #fff;
            border-bottom: 1px solid var(--card-border);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 2px 10px rgba(22,41,61,.05);
        }
        .nav-tactical::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background-color: var(--tactical-orange);
        }
        .navbar-brand-tactical {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--steel-deep);
            white-space: nowrap;
        }
        .navbar-brand-tactical:hover { color: var(--steel-blue); }
        .nav-link-tactical {
            font-size: .9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px !important;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-link-tactical:hover { color: var(--steel-blue); background-color: rgba(44,95,138,.06); }
        .nav-link-tactical.active { color: var(--steel-blue); position: relative; font-weight: 600; }
        .nav-link-tactical.active::before {
            content: '';
            position: absolute;
            left: 10px;
            bottom: 4px;
            width: 16px;
            height: 3px;
            border-radius: 2px;
            background-color: var(--tactical-orange);
        }
        .hero-dark {
            background-color: var(--night-blue);
            background-image: linear-gradient(rgba(22,41,61,.88), rgba(22,41,61,.92)), url('/assets/images/d3a71a8000006155.jpg');
            background-size: cover;
            background-position: center;
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .hero-dark::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: 
                linear-gradient(var(--grid-line) 1px, transparent 1px),
                linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            opacity: .5;
        }
        .hero-title {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: rgba(255,255,255,.82);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 560px;
            position: relative;
            z-index: 1;
        }
        .timeline-node {
            position: relative;
            padding-left: 32px;
            padding-bottom: 28px;
            border-left: 2px solid var(--card-border);
            margin-left: 12px;
        }
        .timeline-node::before {
            content: '';
            position: absolute;
            left: -9px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--steel-blue);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--steel-blue);
        }
        .timeline-node:last-child { border-left-color: transparent; padding-bottom: 0; }
        .timeline-year {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: .95rem;
            color: var(--tactical-orange);
            letter-spacing: .5px;
        }
        .timeline-text {
            font-size: .9rem;
            color: var(--text-secondary);
            margin-top: 2px;
        }
        .list-item-tactical {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            border-left: 3px solid transparent;
            border-bottom: 1px solid var(--card-border);
            transition: all .25s ease;
            background-color: #fff;
        }
        .list-item-tactical:last-child { border-bottom: none; }
        .list-item-tactical:hover {
            border-left-color: var(--steel-blue);
            background-color: rgba(44,95,138,.04);
            transform: translateX(4px);
        }
        .list-item-title {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
        }
        .list-item-meta {
            font-size: .8rem;
            color: var(--text-weak);
            white-space: nowrap;
            margin-left: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item {
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            margin-bottom: 10px;
            background-color: #fff;
            overflow: hidden;
            transition: all .25s ease;
        }
        .faq-item.active {
            border-left: 3px solid var(--tactical-orange);
            box-shadow: var(--card-shadow);
        }
        .faq-question {
            padding: 16px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color .2s ease;
        }
        .faq-question:hover { color: var(--steel-blue); }
        .faq-question .fa-chevron-down { transition: transform .3s ease; color: var(--text-weak); }
        .faq-item.active .fa-chevron-down { transform: rotate(180deg); color: var(--tactical-orange); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 20px;
            transition: all .35s ease;
            color: var(--text-secondary);
            font-size: .9rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 20px 16px;
        }
        .form-tactical {
            background-color: rgba(255,255,255,.08);
            border: 1px solid rgba(255,255,255,.2);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(4px);
        }
        .form-tactical input {
            background-color: #fff;
            border: 1.5px solid var(--card-border);
            border-radius: var(--radius-btn);
            padding: 12px 16px;
            font-size: .95rem;
            color: var(--text-primary);
            width: 100%;
            transition: all .2s ease;
        }
        .form-tactical input:focus {
            border-color: var(--steel-blue);
            box-shadow: 0 0 0 3px rgba(44,95,138,.25);
            outline: none;
        }
        .step-card {
            background-color: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            transition: all .3s ease;
        }
        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--card-shadow-hover);
            border-color: var(--steel-blue);
        }
        .step-number {
            font-family: var(--font-mono);
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--tactical-orange);
            line-height: 1;
            margin-bottom: 12px;
            letter-spacing: -1px;
        }
        .step-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: .5rem;
        }
        .step-text {
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .review-card {
            background-color: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 24px 26px;
            position: relative;
        }
        .review-card::before {
            content: '\201C';
            font-size: 3rem;
            font-family: Georgia, serif;
            color: var(--tactical-orange);
            opacity: .3;
            position: absolute;
            top: 8px;
            left: 16px;
            line-height: 1;
        }
        .review-text {
            font-size: .9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 20px;
            margin-bottom: .5rem;
        }
        .review-meta {
            font-size: .8rem;
            color: var(--text-weak);
            padding-left: 20px;
        }
        .footer-tactical {
            background-color: var(--night-blue);
            color: rgba(255,255,255,.75);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-tactical a {
            color: rgba(255,255,255,.7);
            transition: color .2s ease;
            font-size: .875rem;
        }
        .footer-tactical a:hover { color: var(--tactical-orange); }
        .footer-brand {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: .75rem;
        }
        .footer-desc {
            font-size: .85rem;
            line-height: 1.6;
            color: rgba(255,255,255,.55);
            max-width: 260px;
        }
        .footer-col-title {
            font-size: .875rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: .5px;
            text-transform: uppercase;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            margin-top: 36px;
            padding-top: 20px;
            font-size: .8rem;
            color: rgba(255,255,255,.5);
        }
        .guarantee-card {
            background-color: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            position: relative;
            transition: all .3s ease;
        }
        .guarantee-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 0;
            border-style: solid;
            border-width: 0 0 var(--tactical-notch) var(--tactical-notch);
            border-color: transparent transparent var(--steel-blue) transparent;
        }
        .guarantee-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--card-shadow-hover);
        }
        .guarantee-icon {
            font-size: 1.5rem;
            color: var(--steel-blue);
            margin-bottom: .75rem;
        }
        .guarantee-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: .4rem;
        }
        .guarantee-text {
            font-size: .85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .comparison-card {
            background-color: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: all .3s ease;
        }
        .comparison-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
            border-color: var(--steel-blue);
        }
        .comparison-status {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
            margin-bottom: 12px;
        }
        .status-green { background-color: var(--success-green); box-shadow: 0 0 8px rgba(46,139,106,.5); }
        .status-amber { background-color: var(--warning-amber); box-shadow: 0 0 8px rgba(201,138,27,.4); }
        .comparison-value {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--steel-deep);
            margin-bottom: .3rem;
        }
        .comparison-label {
            font-size: .85rem;
            color: var(--text-secondary);
            font-weight: 600;
            margin-bottom: .5rem;
        }
        .comparison-desc {
            font-size: .8rem;
            color: var(--text-weak);
            line-height: 1.5;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }
        .nav-cta-group .btn {
            white-space: nowrap;
            font-size: .85rem;
            padding: 8px 18px;
        }
        @media (max-width: 991px) {
            .nav-cta-group {
                margin-top: 10px;
                width: 100%;
                justify-content: flex-start;
            }
            .hero-title { font-size: 2rem; }
            .section-title { font-size: 1.6rem; }
            .section-pt { padding: 48px 0; }
        }
        @media (max-width: 767px) {
            .section-pt { padding: 36px 0; }
            .hero-dark { padding: 56px 0 50px; }
            .hero-title { font-size: 1.6rem; }
            .section-title { font-size: 1.4rem; }
            .stat-card .stat-number { font-size: 1.5rem; }
            .card-title { font-size: .95rem; }
            .nav-cta-group .btn { padding: 8px 14px; font-size: .8rem; }
            .footer-tactical { padding: 40px 0 20px; }
        }
        @media (max-width: 575px) {
            .hero-title { font-size: 1.4rem; }
            .container { padding: 0 14px; }
            .section-title { font-size: 1.25rem; padding-left: 12px; }
            .section-title::before { width: 3px; }
            .stat-card { padding: 14px 12px; }
            .stat-card .stat-number { font-size: 1.2rem; }
            .list-item-tactical { flex-direction: column; align-items: flex-start; gap: 4px; }
            .list-item-meta { margin-left: 0; }
            .btn { font-size: 14px; padding: 10px 16px; }
            .form-tactical { padding: 16px; }
            .nav-cta-group .btn { font-size: .75rem; padding: 6px 12px; }
        }

/* roulang page: category1 */
:root {
            --steel-blue: #2C5F8A;
            --steel-deep: #1F476A;
            --night-blue: #16293D;
            --tactical-orange: #E17A28;
            --deep-orange: #C8661F;
            --alert-red: #C84C3C;
            --page-bg: #F2F6FA;
            --section-white: #FFFFFF;
            --section-alt: #EDF3F9;
            --card-bg: #FFFFFF;
            --card-border: #D9E3ED;
            --card-shadow: 0 8px 24px rgba(22,41,61,.06);
            --card-shadow-hover: 0 18px 40px rgba(22,41,61,.12);
            --text-primary: #1B2A38;
            --text-secondary: #5A6E80;
            --text-weak: #8196A8;
            --success-green: #2E8B6A;
            --warning-amber: #C98A1B;
            --grid-line: rgba(44,95,138,.12);
            --font-sans: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
            --font-mono: 'SF Mono','Roboto Mono','Consolas',monospace;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-badge: 4px;
            --radius-chip: 999px;
            --tactical-notch: 6px;
            --section-padding: 72px 0;
            --container-max: 1180px;
            --focus-ring: 0 0 0 3px rgba(44,95,138,.25);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--page-bg);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            text-decoration: none;
            color: var(--steel-blue);
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        a:hover {
            color: var(--steel-deep);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
        }
        input, select, textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        main {
            flex: 1 0 auto;
        }

        /* ===== 导航 ===== */
        .nav-tactical {
            background-color: #fff;
            border-bottom: 1px solid var(--card-border);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 2px 12px rgba(22,41,61,.04);
        }
        .nav-tactical::before {
            content: '';
            display: block;
            height: 3px;
            background: linear-gradient(90deg, var(--steel-blue) 0%, var(--tactical-orange) 45%, var(--steel-deep) 100%);
        }
        .navbar-brand-tactical {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--steel-deep) !important;
            letter-spacing: .5px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 0;
        }
        .navbar-brand-tactical .brand-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--steel-blue), var(--steel-deep));
            color: #fff;
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
            flex-shrink: 0;
        }
        .nav-link-tactical {
            font-size: .925rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 10px 14px;
            position: relative;
            transition: color .2s ease;
            white-space: nowrap;
        }
        .nav-link-tactical:hover {
            color: var(--steel-blue);
        }
        .nav-link-tactical.active {
            color: var(--steel-blue);
            font-weight: 600;
        }
        .nav-link-tactical.active::before {
            content: '';
            position: absolute;
            left: 8px;
            bottom: 2px;
            width: 8px;
            height: 3px;
            background-color: var(--tactical-orange);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            flex-wrap: nowrap;
        }
        .nav-cta-group .btn {
            padding: 9px 20px;
            font-size: .9rem;
            white-space: nowrap;
        }
        .navbar-toggler-tactical {
            border: none;
            background: transparent;
            font-size: 1.4rem;
            color: var(--steel-deep);
            padding: 10px 12px;
            cursor: pointer;
            transition: color .2s ease;
        }
        .navbar-toggler-tactical:hover {
            color: var(--tactical-orange);
        }
        .navbar-toggler-tactical:focus {
            outline: none;
            box-shadow: var(--focus-ring);
            border-radius: 4px;
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 10px 22px;
            transition: all .25s ease;
            letter-spacing: .02em;
        }
        .btn:focus {
            outline: none;
            box-shadow: var(--focus-ring);
        }
        .btn-primary-tactical {
            background-color: var(--tactical-orange);
            border: 1px solid var(--tactical-orange);
            color: #fff;
            font-size: 15px;
            padding: 12px 28px;
        }
        .btn-primary-tactical:hover {
            background-color: var(--deep-orange);
            border-color: var(--deep-orange);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(225,122,40,.35);
        }
        .btn-primary-tactical:active {
            background-color: var(--deep-orange);
            border-color: var(--deep-orange);
            transform: translateY(1px);
            box-shadow: 0 3px 10px rgba(225,122,40,.3);
        }
        .btn-outline-steel {
            background-color: transparent;
            border: 1.5px solid var(--steel-blue);
            color: var(--steel-blue);
            font-size: 15px;
            padding: 11px 26px;
        }
        .btn-outline-steel:hover {
            background-color: rgba(44,95,138,.08);
            color: var(--steel-deep);
            border-color: var(--steel-deep);
            transform: translateY(-1px);
        }
        .btn-sm-tactical {
            padding: 7px 16px;
            font-size: .85rem;
            font-weight: 500;
        }

        /* ===== 区块 ===== */
        .section-tactical {
            padding: var(--section-padding);
        }
        .section-alt-bg {
            background-color: var(--section-alt);
        }
        .section-white-bg {
            background-color: var(--section-white);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: .75rem;
            position: relative;
            padding-left: 16px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background-color: var(--tactical-orange);
            border-radius: 2px;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 760px;
            margin-bottom: 2rem;
        }

        /* ===== 卡片 ===== */
        .card-tactical {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            box-shadow: var(--card-shadow);
            position: relative;
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .card-tactical::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 0;
            height: 0;
            border-style: solid;
            border-width: 0 var(--tactical-notch) var(--tactical-notch) 0;
            border-color: transparent var(--tactical-orange) transparent transparent;
            opacity: .6;
            z-index: 2;
        }
        .card-tactical:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .card-tactical:focus-within {
            outline: 2px solid rgba(44,95,138,.35);
            outline-offset: 2px;
        }
        .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #E8EEF4;
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .card-tactical:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-img-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 3;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .card-body-tactical {
            padding: 18px 20px 16px;
        }
        .card-title-tactical {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .card-desc-tactical {
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-data-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: .8rem;
            color: var(--text-weak);
            border-top: 1px dashed var(--card-border);
            padding-top: 10px;
            font-family: var(--font-mono);
        }
        .card-data-row .data-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .card-data-row .data-item i {
            font-size: .72rem;
            color: var(--steel-blue);
        }
        .card-link-pseudo {
            font-size: .85rem;
            font-weight: 600;
            color: var(--steel-blue);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 2px 0;
            transition: color .2s ease;
        }
        .card-link-pseudo:hover {
            color: var(--tactical-orange);
        }
        .card-link-pseudo i {
            font-size: .72rem;
            transition: transform .2s ease;
        }
        .card-link-pseudo:hover i {
            transform: translateX(3px);
        }

        /* ===== 徽章/芯片 ===== */
        .badge-chip {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
            line-height: 1.4;
            letter-spacing: .3px;
        }
        .badge-orange {
            background-color: rgba(225,122,40,.14);
            color: var(--tactical-orange);
        }
        .badge-green {
            background-color: rgba(46,139,106,.14);
            color: var(--success-green);
        }
        .badge-blue {
            background-color: rgba(44,95,138,.14);
            color: var(--steel-blue);
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--section-white);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-chip);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .2s ease;
            cursor: pointer;
            user-select: none;
        }
        .chip:hover {
            background-color: rgba(44,95,138,.08);
            border-color: var(--steel-blue);
            color: var(--steel-blue);
        }
        .chip-selected {
            background-color: var(--steel-blue);
            border-color: var(--steel-blue);
            color: #fff;
        }
        .chip-selected:hover {
            background-color: var(--steel-deep);
            border-color: var(--steel-deep);
            color: #fff;
        }
        .chip i {
            font-size: .72rem;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-tactical {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .85rem;
            color: var(--text-weak);
            margin-bottom: 12px;
        }
        .breadcrumb-tactical a {
            color: rgba(255,255,255,.75);
            transition: color .2s ease;
        }
        .breadcrumb-tactical a:hover {
            color: var(--tactical-orange);
        }
        .breadcrumb-tactical .sep {
            color: rgba(255,255,255,.45);
            font-size: .72rem;
        }
        .breadcrumb-tactical .current {
            color: rgba(255,255,255,.9);
            font-weight: 500;
        }

        /* ===== 分类H1区 ===== */
        .category-hero {
            background-color: var(--night-blue);
            background-image:
                linear-gradient(rgba(44,95,138,.18) 1px, transparent 1px),
                linear-gradient(90deg, rgba(44,95,138,.18) 1px, transparent 1px);
            background-size: 42px 42px;
            padding: 64px 0 52px;
            position: relative;
            color: #fff;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(22,41,61,.15) 0%, rgba(22,41,61,.72) 100%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 2.35rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: .5px;
        }
        .category-hero h1 .highlight-orange {
            color: var(--tactical-orange);
        }
        .category-hero .lead-desc {
            font-size: 1.05rem;
            color: rgba(255,255,255,.82);
            max-width: 680px;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== 筛选工具条 ===== */
        .filter-bar {
            background-color: var(--section-white);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 18px 22px;
            box-shadow: var(--card-shadow);
        }
        .filter-group-label {
            font-size: .82rem;
            font-weight: 700;
            color: var(--steel-deep);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-right: 14px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .filter-group-label i {
            font-size: .72rem;
            color: var(--tactical-orange);
        }
        .filter-chips-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .filter-divider {
            border-top: 1px dashed var(--card-border);
            margin: 14px 0;
        }

        /* ===== 更新说明条 ===== */
        .update-info-strip {
            background-color: var(--night-blue);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .update-info-strip::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--tactical-orange);
        }
        .update-info-strip .update-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .update-info-strip .update-title .pulse-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--success-green);
            animation: pulse-dot 2s infinite;
            display: inline-block;
        }
        .update-info-strip .update-desc {
            color: rgba(255,255,255,.78);
            font-size: .95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .update-info-strip .update-meta {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 10px;
            font-size: .82rem;
            color: rgba(255,255,255,.6);
            font-family: var(--font-mono);
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: .45; transform: scale(1.3); }
        }

        /* ===== 步骤卡 ===== */
        .step-card {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 28px 26px;
            position: relative;
            box-shadow: var(--card-shadow);
            transition: all .3s ease;
            height: 100%;
        }
        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--card-shadow-hover);
        }
        .step-num {
            font-family: var(--font-mono);
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--steel-blue);
            line-height: 1.1;
            margin-bottom: 14px;
            display: inline-block;
            position: relative;
        }
        .step-num::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 2px;
            width: 32px;
            height: 3px;
            background-color: var(--tactical-orange);
            border-radius: 2px;
        }
        .step-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 相关分类入口卡 ===== */
        .entry-card {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--card-shadow);
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all .3s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 3px;
            background-color: var(--steel-blue);
            opacity: 0;
            transition: opacity .3s ease;
        }
        .entry-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--card-shadow-hover);
            border-color: rgba(44,95,138,.4);
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: rgba(44,95,138,.1);
            color: var(--steel-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .entry-card .entry-info {
            flex: 1;
        }
        .entry-card .entry-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .entry-card .entry-desc {
            font-size: .82rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }
        .entry-card .entry-arrow {
            color: var(--text-weak);
            font-size: .9rem;
            transition: all .2s ease;
            flex-shrink: 0;
        }
        .entry-card:hover .entry-arrow {
            color: var(--tactical-orange);
            transform: translateX(4px);
        }

        /* ===== FAQ ===== */
        .accordion-tactical .accordion-item {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: box-shadow .3s ease;
        }
        .accordion-tactical .accordion-item:hover {
            box-shadow: var(--card-shadow-hover);
        }
        .accordion-tactical .accordion-button {
            background-color: transparent;
            border: none;
            border-radius: var(--radius-card) !important;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            padding: 18px 22px;
            box-shadow: none !important;
            position: relative;
            transition: all .2s ease;
        }
        .accordion-tactical .accordion-button:not(.collapsed) {
            background-color: rgba(44,95,138,.05);
            color: var(--steel-deep);
            border-left: 3px solid var(--tactical-orange);
            padding-left: 19px;
        }
        .accordion-tactical .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }
        .accordion-tactical .accordion-button::after {
            filter: brightness(0) saturate(100%) invert(34%) sepia(17%) saturate(965%) hue-rotate(170deg) brightness(94%) contrast(91%);
            transition: transform .3s ease;
        }
        .accordion-tactical .accordion-body {
            padding: 6px 22px 20px;
            font-size: .92rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA 横条 ===== */
        .cta-strip {
            background-color: var(--night-blue);
            background-image:
                radial-gradient(circle at 20% 30%, rgba(44,95,138,.25) 0%, transparent 55%),
                radial-gradient(circle at 80% 70%, rgba(225,122,40,.18) 0%, transparent 50%);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-strip::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 0;
            height: 0;
            border-style: solid;
            border-width: 0 var(--tactical-notch) var(--tactical-notch) 0;
            border-color: transparent var(--tactical-orange) transparent transparent;
            opacity: .8;
        }
        .cta-strip h3 {
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .cta-strip p {
            color: rgba(255,255,255,.78);
            margin-bottom: 0;
            font-size: .95rem;
        }
        .cta-strip .btn-group-cta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .cta-strip .btn-ghost-light {
            background-color: transparent;
            border: 1.5px solid rgba(255,255,255,.7);
            color: #fff;
            padding: 11px 26px;
            font-size: .95rem;
            font-weight: 500;
        }
        .cta-strip .btn-ghost-light:hover {
            background-color: rgba(255,255,255,.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-1px);
        }

        /* ===== 页脚 ===== */
        .footer-tactical {
            background-color: var(--night-blue);
            color: rgba(255,255,255,.72);
            padding: 56px 0 0;
            flex-shrink: 0;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .footer-desc {
            font-size: .88rem;
            line-height: 1.7;
            color: rgba(255,255,255,.6);
            max-width: 340px;
            margin-bottom: 0;
        }
        .footer-col-title {
            font-size: .88rem;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .footer-tactical .footer-col a,
        .footer-tactical .footer-col .footer-link {
            color: rgba(255,255,255,.6);
            font-size: .88rem;
            transition: color .2s ease;
        }
        .footer-tactical .footer-col a:hover {
            color: var(--tactical-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.12);
            margin-top: 40px;
            padding: 18px 0 22px;
            font-size: .8rem;
            color: rgba(255,255,255,.5);
        }
        .footer-bottom a {
            color: rgba(255,255,255,.55);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color .2s ease;
        }
        .footer-bottom a:hover {
            color: var(--tactical-orange);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            :root {
                --section-padding: 48px 0;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.85rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .nav-cta-group {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                padding: 8px 0 16px;
            }
            .nav-cta-group .btn {
                text-align: center;
            }
            .navbar-collapse {
                max-height: 70vh;
                overflow-y: auto;
            }
            .cta-strip {
                padding: 28px 24px;
            }
            .cta-strip .btn-group-cta {
                justify-content: flex-start;
                margin-top: 14px;
            }
        }
        @media (max-width: 767.98px) {
            :root {
                --section-padding: 36px 0;
            }
            .category-hero {
                padding: 36px 0 30px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .filter-bar {
                padding: 14px 16px;
            }
            .filter-group-label {
                margin-bottom: 6px;
                display: block;
            }
            .update-info-strip {
                padding: 22px 18px 22px 22px;
            }
            .step-card {
                padding: 22px 18px;
            }
            .step-num {
                font-size: 2rem;
            }
            .cta-strip h3 {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 1.3rem;
                padding-left: 12px;
            }
            .section-title::before {
                top: 5px;
                bottom: 5px;
                width: 3px;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .category-hero .lead-desc {
                font-size: .92rem;
            }
            .nav-cta-group .btn {
                padding: 10px 16px;
                font-size: .85rem;
            }
            .breadcrumb-tactical {
                font-size: .78rem;
                gap: 5px;
            }
            .btn {
                font-size: .9rem;
                padding: 10px 18px;
            }
            .btn-primary-tactical,
            .btn-outline-steel {
                padding: 10px 18px;
                font-size: .9rem;
            }
            .card-body-tactical {
                padding: 14px 16px 12px;
            }
            .card-title-tactical {
                font-size: .95rem;
            }
            .update-info-strip .update-title {
                font-size: 1.05rem;
            }
            .cta-strip {
                padding: 22px 18px;
            }
            .accordion-tactical .accordion-button {
                font-size: .92rem;
                padding: 14px 16px;
            }
            .accordion-tactical .accordion-body {
                padding: 4px 16px 16px;
                font-size: .85rem;
            }
            .footer-tactical {
                padding: 36px 0 0;
            }
            .footer-col-title {
                margin-bottom: 10px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start !important;
                gap: 6px;
                text-align: left;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}