/* roulang page: index */
:root {
            --bc-primary: #1B4332;
            --bc-primary-dark: #142F24;
            --bc-secondary: #F4A261;
            --bc-secondary-dark: #E08C4A;
            --bc-accent: #E9C46A;
            --bc-bg: #F7F5F0;
            --bc-surface: #FFFFFF;
            --bc-text: #1F2937;
            --bc-text-sub: #6B7280;
            --bc-border: #E5E7EB;
            --bc-success: #2D6A4F;
            --bc-shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --bc-shadow-hover: 0 4px 16px rgba(0, 0, 0, .10);
            --bc-radius: 16px;
            --bc-radius-sm: 10px;
            --bs-body-font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            --bs-body-bg: #F7F5F0;
            --bs-body-color: #1F2937;
            --bs-primary: #1B4332;
            --bs-primary-rgb: 27, 67, 50;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bc-bg);
            color: var(--bc-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--bc-primary); text-decoration: none; transition: color .2s ease; }
        a:hover { color: var(--bc-primary-dark); }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1200px; padding-left: clamp(1rem, 4vw, 3rem); padding-right: clamp(1rem, 4vw, 3rem); }

        .btn { border-radius: 10px; font-weight: 600; padding: .65rem 1.75rem; transition: all .25s ease; border: none; }
        .btn:focus, .btn:focus-visible { outline: 2px solid rgba(244, 162, 97, .5); outline-offset: 2px; box-shadow: none; }
        .btn-primary {
            background-color: var(--bc-primary);
            color: #fff;
        }
        .btn-primary:hover { background-color: var(--bc-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--bc-shadow-hover); }
        .btn-secondary {
            background-color: var(--bc-secondary);
            color: #142F24;
            font-weight: 700;
        }
        .btn-secondary:hover { background-color: var(--bc-secondary-dark); color: #142F24; transform: translateY(-2px); box-shadow: var(--bc-shadow-hover); }
        .btn-outline-primary {
            background: transparent;
            border: 1px solid var(--bc-border);
            color: var(--bc-primary);
        }
        .btn-outline-primary:hover { border-color: var(--bc-primary); background: rgba(27, 67, 50, .04); color: var(--bc-primary); transform: translateY(-2px); }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
        }
        .btn-outline-light:hover { border-color: #fff; background: rgba(255, 255, 255, .08); color: #fff; }

        .badge {
            border-radius: 4px;
            padding: .25rem .5rem;
            font-size: .75rem;
            font-weight: 500;
        }
        .badge-soft { background: rgba(27, 67, 50, .08); color: var(--bc-primary); }
        .badge-accent { background: var(--bc-accent); color: #142F24; }

        .card {
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            box-shadow: var(--bc-shadow-sm);
            background: var(--bc-surface);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bc-shadow-hover);
            border-color: var(--bc-primary);
        }

        .section-title { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.3; margin-bottom: .5em; letter-spacing: -0.01em; }
        .section-subtitle { color: var(--bc-text-sub); font-size: 1rem; margin-bottom: 2rem; }
        .text-sub { color: var(--bc-text-sub); }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: transparent;
            transition: background .3s ease, box-shadow .3s ease;
        }
        .site-header.scrolled {
            background: rgba(27, 67, 50, .97);
            box-shadow: 0 2px 12px rgba(0, 0, 0, .15);
        }
        .site-header .navbar { padding: 0; height: 64px; }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--bc-primary);
            letter-spacing: -0.01em;
        }
        .site-header.scrolled .navbar-brand { color: #fff; }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--bc-secondary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #142F24;
        }
        .navbar-brand .brand-icon svg { width: 20px; height: 20px; }

        .navbar-nav .nav-link {
            color: var(--bc-primary);
            font-weight: 500;
            font-size: .95rem;
            padding: .5rem .9rem !important;
            border-radius: 8px;
            transition: all .2s ease;
        }
        .site-header.scrolled .navbar-nav .nav-link { color: rgba(255, 255, 255, .88); }
        .navbar-nav .nav-link:hover { background: rgba(27, 67, 50, .08); color: var(--bc-primary); }
        .site-header.scrolled .navbar-nav .nav-link:hover { background: rgba(255, 255, 255, .12); color: #fff; }
        .navbar-nav .nav-link.active { color: var(--bc-secondary); font-weight: 600; }
        .site-header.scrolled .navbar-nav .nav-link.active { color: var(--bc-secondary); }

        .header-cta {
            background: var(--bc-secondary);
            color: #142F24;
            font-weight: 700;
            border-radius: 10px;
            padding: .45rem 1.4rem;
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: all .25s ease;
        }
        .header-cta:hover { background: var(--bc-secondary-dark); color: #142F24; transform: translateY(-1px); }
        .header-search {
            background: transparent;
            border: none;
            color: var(--bc-primary);
            font-size: 1.1rem;
            padding: .4rem .6rem;
            cursor: pointer;
        }
        .site-header.scrolled .header-search { color: #fff; }

        .navbar-toggler {
            border: none;
            color: var(--bc-primary);
            font-size: 1.4rem;
            padding: .25rem .5rem;
        }
        .site-header.scrolled .navbar-toggler { color: #fff; }
        .navbar-toggler:focus { box-shadow: none; }

        @media (max-width: 991.98px) {
            .site-header { height: 56px; }
            .site-header .navbar { height: 56px; }
            .navbar-collapse {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                max-width: 340px;
                height: 100vh;
                background: var(--bc-primary);
                padding: 80px 32px 32px;
                transition: right .35s ease;
                z-index: 1050;
                box-shadow: -4px 0 20px rgba(0, 0, 0, .2);
            }
            .navbar-collapse.show { right: 0; }
            .navbar-nav .nav-link {
                color: #fff;
                font-size: 1.2rem;
                padding: 1rem 0 !important;
                border-bottom: 1px solid rgba(255, 255, 255, .1);
            }
            .navbar-nav .nav-link:hover { background: transparent; color: var(--bc-accent); }
            .navbar-collapse .header-cta {
                margin-top: 24px;
                width: 100%;
                justify-content: center;
            }
            .navbar-collapse .header-search { display: none; }
            .navbar-toggler { z-index: 1060; position: relative; }
        }

        /* ===== Hero ===== */
        .hero {
            padding: 0;
            min-height: 92vh;
            display: flex;
            align-items: stretch;
            background: var(--bc-bg);
            margin-top: 0;
            overflow: hidden;
        }
        .hero-inner { display: flex; width: 100%; min-height: 92vh; }
        .hero-content {
            width: 55%;
            padding: 140px clamp(1rem, 4vw, 3rem) 80px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background: linear-gradient(135deg, #fff 0%, var(--bc-bg) 100%);
            position: relative;
        }
        .hero-visual {
            width: 45%;
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 500px;
        }
        .hero-visual::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(27, 67, 50, 0.25), transparent);
        }
        .hero-status {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(27, 67, 50, .06);
            border-radius: 30px;
            font-size: .85rem;
            color: var(--bc-primary);
            font-weight: 500;
            margin-bottom: 28px;
            width: fit-content;
        }
        .hero-status .dot {
            width: 8px;
            height: 8px;
            background: var(--bc-success);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(45, 106, 79, .4); }
            50% { box-shadow: 0 0 0 6px rgba(45, 106, 79, 0); }
        }
        .hero h1 {
            font-size: clamp(2rem, 4vw, 3.25rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--bc-text);
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            color: var(--bc-secondary);
            position: relative;
        }
        .hero-sub {
            font-size: 1.05rem;
            color: var(--bc-text-sub);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 540px;
        }
        .hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-visual .floating-card {
            position: absolute;
            bottom: 40px;
            right: 30px;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--bc-shadow-hover);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            z-index: 2;
            animation: float 4s ease-in-out infinite;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .floating-card .fc-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(27, 67, 50, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bc-primary);
            font-size: 1.2rem;
        }
        .floating-card .fc-text .fc-label { font-size: .75rem; color: var(--bc-text-sub); }
        .floating-card .fc-text .fc-value { font-size: 1rem; font-weight: 700; color: var(--bc-text); }

        @media (max-width: 991.98px) {
            .hero-inner { flex-direction: column; }
            .hero-content { width: 100%; padding: 110px 1.5rem 50px; }
            .hero-visual { width: 100%; min-height: 240px; order: 2; }
            .hero { min-height: auto; }
        }
        @media (max-width: 575.98px) {
            .hero-content { padding: 100px 1rem 40px; }
            .hero-visual { min-height: 200px; }
            .hero-cta .btn { width: 100%; }
        }

        /* ===== Compare Table ===== */
        .compare-section { padding: clamp(3rem, 6vw, 5rem) 0; background: var(--bc-bg); }
        .compare-card {
            border-radius: var(--bc-radius);
            border: 1px solid var(--bc-border);
            background: var(--bc-surface);
            box-shadow: var(--bc-shadow-sm);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        .compare-card:hover { box-shadow: var(--bc-shadow-hover); border-color: var(--bc-primary); }
        .compare-card.featured {
            border: 2px solid var(--bc-primary);
            position: relative;
            box-shadow: 0 4px 20px rgba(27, 67, 50, .12);
        }
        .compare-card__header {
            background: var(--bc-primary);
            color: #fff;
            padding: 24px 20px;
            text-align: center;
            position: relative;
        }
        .compare-card.featured .compare-card__header { background: var(--bc-primary-dark); }
        .compare-card__header h3 { font-size: 1.35rem; font-weight: 700; margin: 0; }
        .compare-card__header .price { font-size: .85rem; color: rgba(255, 255, 255, .75); margin-top: 4px; }
        .compare-card.featured .recommend-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--bc-accent);
            color: #142F24;
            font-size: .75rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 20px;
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(233, 196, 106, .4);
        }
        .compare-card__body { padding: 20px; flex-grow: 1; }
        .compare-line {
            padding: 14px 4px;
            border-bottom: 1px solid var(--bc-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            min-height: 56px;
        }
        .compare-line:last-child { border-bottom: none; }
        .compare-line .label { font-size: .88rem; color: var(--bc-text-sub); }
        .compare-line .value { font-weight: 600; font-size: .92rem; color: var(--bc-text); text-align: right; }
        .compare-card.featured .compare-line .value { color: var(--bc-primary); }
        .compare-card__footer { padding: 16px 20px 24px; text-align: center; }
        .compare-card__footer .btn { width: 100%; }

        /* ===== Level Highlights ===== */
        .level-section { padding: clamp(3rem, 6vw, 5rem) 0; background: var(--bc-surface); }
        .level-card {
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            padding: 28px 24px;
            height: 100%;
            transition: all .3s ease;
        }
        .level-card:hover { transform: translateY(-4px); border-color: var(--bc-primary); box-shadow: var(--bc-shadow-hover); }
        .level-card .level-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(27, 67, 50, .08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bc-primary);
            font-size: 1.4rem;
            margin-bottom: 18px;
        }
        .level-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 14px; }
        .level-card ul { list-style: none; padding: 0; margin: 0; }
        .level-card ul li {
            padding: 6px 0;
            font-size: .9rem;
            color: var(--bc-text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .level-card ul li i { color: var(--bc-accent); font-size: .9rem; }

        /* ===== Content Preview ===== */
        .preview-section { padding: clamp(3rem, 6vw, 5rem) 0; background: var(--bc-bg); }
        .preview-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
        .preview-card {
            border-radius: var(--bc-radius);
            border: 1px solid var(--bc-border);
            background: var(--bc-surface);
            overflow: hidden;
            transition: all .3s ease;
            position: relative;
            box-shadow: var(--bc-shadow-sm);
        }
        .preview-card:hover { transform: translateY(-4px); box-shadow: var(--bc-shadow-hover); border-color: var(--bc-primary); }
        .preview-card .preview-img { position: relative; overflow: hidden; }
        .preview-card .preview-img img { width: 100%; object-fit: cover; transition: transform .5s ease; }
        .preview-card:hover .preview-img img { transform: scale(1.04); }
        .preview-card .preview-body { padding: 20px 24px 24px; }
        .preview-card .preview-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--bc-accent);
            color: #142F24;
            font-size: .75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 12px;
        }
        .preview-card .preview-tag i { font-size: .8rem; }
        .preview-card h4 { font-size: 1.15rem; font-weight: 600; margin-bottom: 10px; line-height: 1.4; }
        .preview-card p { font-size: .9rem; color: var(--bc-text-sub); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
        .preview-card .preview-link { font-size: .85rem; font-weight: 600; color: var(--bc-primary); }
        .preview-card .preview-link:hover { color: var(--bc-secondary-dark); }
        .preview-col { display: flex; flex-direction: column; gap: 24px; }

        @media (max-width: 991.98px) {
            .preview-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 575.98px) {
            .preview-grid { grid-template-columns: 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-section { padding: clamp(3rem, 6vw, 5rem) 0; background: var(--bc-surface); }
        .faq-wrap {
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            background: var(--bc-surface);
            overflow: hidden;
        }
        .accordion-item { border: none; border-bottom: 1px solid var(--bc-border); background: transparent; }
        .accordion-item:last-child { border-bottom: none; }
        .accordion-button {
            background: transparent;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--bc-text);
            box-shadow: none;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .accordion-button::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--bc-secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .accordion-button::after {
            content: "+";
            font-family: "PingFang SC", sans-serif;
            background-image: none;
            width: auto;
            height: auto;
            font-size: 1.6rem;
            font-weight: 300;
            color: var(--bc-primary);
            transition: transform .25s ease;
            margin-left: auto;
        }
        .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
        .accordion-button:not(.collapsed) {
            background: rgba(27, 67, 50, .03);
            color: var(--bc-primary);
        }
        .accordion-button:focus { box-shadow: none; }
        .accordion-body {
            padding: 0 24px 24px 44px;
            border-left: 4px solid var(--bc-primary);
            margin: 0 24px 16px 24px;
            border-radius: 0 8px 8px 0;
            background: #fff;
            font-size: .95rem;
            color: var(--bc-text-sub);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: clamp(3.5rem, 7vw, 6rem) 0;
            background: linear-gradient(135deg, var(--bc-primary) 0%, var(--bc-primary-dark) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: .08;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border: 2px solid rgba(233, 196, 106, .3);
            border-radius: 20px;
            transform: rotate(45deg);
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; color: #fff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255, 255, 255, .7); font-size: 1rem; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-section .btn { padding: .75rem 2.5rem; font-size: 1rem; }

        /* ===== News List ===== */
        .news-section { padding: clamp(3rem, 6vw, 5rem) 0; background: var(--bc-bg); }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 28px;
            padding: 24px 0;
            border-bottom: 1px solid var(--bc-border);
            transition: background .2s ease;
        }
        .news-item:first-child { padding-top: 0; }
        .news-item:last-child { border-bottom: none; }
        .news-item .news-date {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--bc-primary);
            line-height: 1.2;
            min-width: 80px;
            text-align: center;
            padding-top: 4px;
            background: rgba(27, 67, 50, .04);
            border-radius: 8px;
            padding: 10px 12px;
        }
        .news-item .news-date .month { font-size: .75rem; font-weight: 400; color: var(--bc-text-sub); display: block; }
        .news-item h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
        .news-item h4 a { color: var(--bc-text); }
        .news-item h4 a:hover { color: var(--bc-primary); }
        .news-item p { font-size: .88rem; color: var(--bc-text-sub); margin-bottom: 8px; line-height: 1.6; }
        .news-item .news-meta { display: flex; align-items: center; gap: 12px; }
        .news-item .badge { margin-right: 4px; }
        .news-empty {
            border: 2px dashed var(--bc-border);
            border-radius: var(--bc-radius);
            padding: 48px;
            text-align: center;
            color: var(--bc-text-sub);
            font-size: .95rem;
            background: var(--bc-surface);
        }
        .news-empty i { font-size: 2rem; color: var(--bc-border); display: block; margin-bottom: 12px; }

        /* ===== Footer ===== */
        .site-footer {
            background: #142F24;
            color: rgba(255, 255, 255, .72);
            padding: 56px 0 24px;
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--bc-secondary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #142F24;
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .site-footer ul { list-style: none; padding: 0; margin: 0; }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a { color: rgba(255, 255, 255, .6); font-size: .9rem; transition: color .2s; }
        .site-footer ul li a:hover { color: var(--bc-accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 20px;
            margin-top: 36px;
            text-align: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .4);
        }

        /* ===== Modal Login ===== */
        .modal-content { border-radius: var(--bc-radius); overflow: hidden; border: none; }
        .login-modal-wrap { display: flex; }
        .login-brand-side {
            background: var(--bc-primary);
            padding: 48px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            color: #fff;
            min-width: 40%;
        }
        .login-brand-side .brand-icon {
            width: 48px;
            height: 48px;
            background: var(--bc-secondary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #142F24;
            font-size: 1.4rem;
            margin-bottom: 20px;
        }
        .login-brand-side h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 10px; }
        .login-brand-side p { font-size: .9rem; color: rgba(255, 255, 255, .65); }
        .login-form-side { padding: 40px; flex: 1; }
        .login-form-side h4 { font-size: 1.2rem; font-weight: 600; margin-bottom: 24px; }
        .form-control {
            border-radius: 10px;
            border: 1px solid var(--bc-border);
            padding: .6rem .9rem;
            font-size: .95rem;
        }
        .form-control:focus {
            border-color: var(--bc-primary);
            box-shadow: 0 0 0 2px rgba(27, 67, 50, .15);
        }
        .form-label { font-size: .85rem; color: var(--bc-text-sub); margin-bottom: 8px; font-weight: 500; }
        .modal-backdrop.show { opacity: .6; }
        @media (max-width: 575.98px) {
            .login-brand-side { display: none; }
            .login-form-side { padding: 28px 20px; }
        }

        /* ===== Misc ===== */
        .section-head { margin-bottom: 40px; }
        .section-head .section-line {
            width: 48px;
            height: 3px;
            background: var(--bc-secondary);
            border-radius: 3px;
            margin-bottom: 16px;
        }
        .view-all { font-size: .9rem; font-weight: 600; color: var(--bc-primary); white-space: nowrap; }
        .view-all:hover { color: var(--bc-secondary-dark); }

        @media (max-width: 767.98px) {
            .news-item { flex-direction: column; gap: 12px; }
            .news-item .news-date { min-width: auto; align-self: flex-start; text-align: left; padding: 6px 14px; display: inline-flex; gap: 6px; align-items: baseline; }
            .news-item .news-date .month { display: inline; }
            .compare-card { margin-bottom: 4px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bc-primary: #1B4332;
            --bc-primary-dark: #142F24;
            --bc-secondary: #F4A261;
            --bc-secondary-dark: #E08C4A;
            --bc-accent: #E9C46A;
            --bc-bg: #F7F5F0;
            --bc-surface: #FFFFFF;
            --bc-text: #1F2937;
            --bc-text-sub: #6B7280;
            --bc-border: #E5E7EB;
            --bc-success: #2D6A4F;
            --bc-shadow-sm: 0 1px 3px rgba(0,0,0,.06);
            --bc-shadow-hover: 0 4px 16px rgba(0,0,0,.10);
            --bc-radius: 16px;
            --bc-radius-sm: 10px;
            --bs-body-font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            --bs-body-bg: var(--bc-bg);
            --bs-body-color: var(--bc-text);
            --bs-link-color: var(--bc-primary);
            --bs-link-hover-color: var(--bc-primary-dark);
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bs-body-font-family);
            background: var(--bc-bg);
            color: var(--bc-text);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--bc-primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--bc-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1, h2, h3, h4, h5, h6 {
            color: var(--bc-text);
            margin-top: 0;
            line-height: 1.3;
        }
        p {
            margin-top: 0;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bc-primary);
            box-shadow: 0 2px 12px rgba(0,0,0,.12);
        }
        .site-header .navbar {
            min-height: 64px;
            padding: 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -.01em;
            color: #fff !important;
        }
        .brand-icon {
            display: inline-flex;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
            align-items: center;
            justify-content: center;
        }
        .brand-icon svg {
            width: 20px;
            height: 20px;
        }
        .navbar-nav .nav-link {
            color: rgba(255,255,255,.8);
            font-weight: 500;
            padding: 1.1rem 1rem;
            font-size: .95rem;
            border-bottom: 3px solid transparent;
            transition: color .2s, border-color .2s;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #fff;
            border-bottom-color: var(--bc-secondary);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bc-secondary);
            color: var(--bc-primary-dark) !important;
            font-weight: 700;
            font-size: .9rem;
            padding: .5rem 1.25rem;
            border-radius: var(--bc-radius-sm);
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .header-cta:hover {
            background: var(--bc-secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(244,162,97,.3);
        }
        .header-search {
            background: none;
            border: none;
            color: rgba(255,255,255,.8);
            font-size: 1.1rem;
            padding: .5rem;
            border-radius: 50%;
            transition: background .2s, color .2s;
        }
        .header-search:hover {
            background: rgba(255,255,255,.1);
            color: #fff;
        }
        .navbar-toggler {
            border: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 0;
            outline: none;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        @media (max-width: 991.98px) {
            .site-header .navbar {
                min-height: 56px;
            }
            .navbar-collapse {
                background: var(--bc-primary);
                padding: 1rem;
                border-radius: 0 0 var(--bc-radius) var(--bc-radius);
                margin-top: .5rem;
            }
            .navbar-nav .nav-link {
                padding: .6rem 0;
                border-bottom: none;
            }
            .navbar-nav .nav-link.active {
                border-bottom: none;
                color: var(--bc-secondary);
            }
            .navbar-collapse .d-flex {
                margin-top: .75rem;
                flex-wrap: wrap;
                gap: .5rem;
            }
        }

        /* ===== 页面 Banner ===== */
        .page-banner {
            background: var(--bc-bg);
            padding: 2.5rem 0 2rem;
            border-bottom: 1px solid var(--bc-border);
            position: relative;
            overflow: hidden;
        }
        .page-banner .banner-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .page-banner .banner-text {
            flex: 1 1 60%;
            min-width: 280px;
        }
        .page-banner h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            margin-bottom: .75rem;
            letter-spacing: -.01em;
            color: var(--bc-primary);
        }
        .page-banner .banner-desc {
            color: var(--bc-text-sub);
            font-size: .95rem;
            max-width: 620px;
            margin-bottom: 1.25rem;
            line-height: 1.8;
        }
        .breadcrumb-nav {
            font-size: .85rem;
            color: var(--bc-text-sub);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 0;
        }
        .breadcrumb-nav a {
            color: var(--bc-primary);
            font-weight: 500;
        }
        .breadcrumb-nav .sep {
            color: #b0b0b0;
        }
        .breadcrumb-nav .current {
            color: var(--bc-secondary-dark);
            font-weight: 600;
        }
        .banner-decor {
            flex: 0 0 200px;
            height: 140px;
            border-radius: var(--bc-radius);
            overflow: hidden;
            box-shadow: var(--bc-shadow-sm);
            position: relative;
        }
        .banner-decor img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .banner-decor::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27,67,50,.25), transparent);
        }
        @media (max-width: 767.98px) {
            .page-banner {
                padding: 2rem 0 1.5rem;
            }
            .banner-decor {
                flex: 0 0 100%;
                height: 120px;
                margin-top: 1rem;
            }
        }

        /* ===== 主要内容区 ===== */
        .news-section {
            padding: 3rem 0 2.5rem;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .news-item {
            display: flex;
            gap: 1.25rem;
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            padding: 1.25rem;
            box-shadow: var(--bc-shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--bc-shadow-hover);
            border-color: var(--bc-primary);
        }
        .news-thumb {
            flex: 0 0 180px;
            border-radius: 12px;
            overflow: hidden;
            height: 130px;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .news-item:hover .news-thumb img {
            transform: scale(1.04);
        }
        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: .75rem;
            margin-bottom: .4rem;
        }
        .news-tag {
            display: inline-block;
            background: rgba(27,67,50,.08);
            color: var(--bc-primary);
            font-size: .75rem;
            font-weight: 600;
            padding: .15rem .6rem;
            border-radius: 6px;
            letter-spacing: .02em;
        }
        .news-tag.hot {
            background: rgba(244,162,97,.15);
            color: var(--bc-secondary-dark);
        }
        .news-date {
            font-size: .8rem;
            color: var(--bc-text-sub);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-date i {
            font-size: .75rem;
        }
        .news-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: .4rem;
            line-height: 1.45;
        }
        .news-title a {
            color: var(--bc-text);
            transition: color .2s;
        }
        .news-title a:hover {
            color: var(--bc-primary);
        }
        .news-excerpt {
            font-size: .88rem;
            color: var(--bc-text-sub);
            line-height: 1.7;
            margin-bottom: .5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .load-more {
            text-align: center;
            margin-top: 2rem;
        }
        .btn-outline-primary {
            border: 1.5px solid var(--bc-primary);
            color: var(--bc-primary);
            border-radius: var(--bc-radius-sm);
            padding: .55rem 2rem;
            font-weight: 600;
            transition: all .25s ease;
        }
        .btn-outline-primary:hover {
            background: var(--bc-primary);
            color: #fff;
            border-color: var(--bc-primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(27,67,50,.2);
        }
        .btn-outline-primary:focus,
        .btn:focus {
            outline: 2px solid rgba(244,162,97,.5);
            outline-offset: 2px;
            box-shadow: none;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-widget {
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            padding: 1.5rem;
            box-shadow: var(--bc-shadow-sm);
        }
        .sidebar-widget h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            padding-bottom: .75rem;
            border-bottom: 2px solid var(--bc-bg);
            position: relative;
            color: var(--bc-primary);
        }
        .sidebar-widget h4::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 36px;
            height: 2px;
            background: var(--bc-secondary);
        }
        .sidebar-nav {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-nav li {
            margin-bottom: .35rem;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: .5rem .75rem;
            border-radius: 8px;
            font-size: .9rem;
            color: var(--bc-text);
            transition: background .2s, color .2s, padding-left .2s;
        }
        .sidebar-nav a i {
            color: var(--bc-primary);
            font-size: .85rem;
            transition: color .2s;
        }
        .sidebar-nav a:hover {
            background: rgba(27,67,50,.06);
            color: var(--bc-primary);
            padding-left: 1rem;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: .5rem;
        }
        .tag-cloud a {
            display: inline-block;
            background: var(--bc-bg);
            color: var(--bc-text);
            font-size: .8rem;
            padding: .3rem .75rem;
            border-radius: 20px;
            border: 1px solid transparent;
            transition: background .2s, color .2s, border-color .2s;
        }
        .tag-cloud a:hover {
            background: var(--bc-primary);
            color: #fff;
            border-color: var(--bc-primary);
        }
        .contact-card {
            background: linear-gradient(135deg, var(--bc-primary), var(--bc-primary-dark));
            border: none;
            color: #fff;
        }
        .contact-card h4 {
            color: #fff;
            border-bottom-color: rgba(255,255,255,.15);
        }
        .contact-card h4::after {
            background: var(--bc-secondary);
        }
        .contact-card p {
            font-size: .88rem;
            color: rgba(255,255,255,.75);
            margin-bottom: 1rem;
            line-height: 1.7;
        }
        .contact-card .btn {
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
            border: none;
            font-weight: 700;
            font-size: .9rem;
            border-radius: var(--bc-radius-sm);
            padding: .55rem 1.25rem;
            transition: background .2s, transform .2s;
        }
        .contact-card .btn:hover {
            background: var(--bc-secondary-dark);
            transform: translateY(-2px);
        }
        .contact-info {
            list-style: none;
            padding: 0;
            margin: 0 0 1rem;
        }
        .contact-info li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .85rem;
            color: rgba(255,255,255,.7);
            margin-bottom: .5rem;
        }
        .contact-info li i {
            color: var(--bc-accent);
        }
        @media (max-width: 991.98px) {
            .news-item {
                flex-direction: row;
            }
            .news-thumb {
                flex: 0 0 140px;
                height: 110px;
            }
        }
        @media (max-width: 575.98px) {
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                flex: 0 0 100%;
                height: 160px;
            }
            .sidebar {
                margin-top: 1.5rem;
            }
        }

        /* ===== CTA 区域 ===== */
        .cta-section {
            padding: 3rem 0;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--bc-primary) 0%, var(--bc-primary-dark) 100%);
            border-radius: var(--bc-radius);
            padding: 3rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 80px;
            border: 2px solid rgba(233,196,106,.3);
            transform: rotate(45deg);
            top: -30px;
            right: -30px;
            border-radius: 8px;
            pointer-events: none;
        }
        .cta-box h2 {
            color: #fff;
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: .75rem;
            position: relative;
        }
        .cta-box p {
            color: rgba(255,255,255,.7);
            font-size: .95rem;
            max-width: 520px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
            position: relative;
        }
        .cta-box .btn-cta {
            display: inline-block;
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: .65rem 2.25rem;
            border-radius: var(--bc-radius-sm);
            border: none;
            transition: background .2s, transform .2s, box-shadow .2s;
            position: relative;
        }
        .cta-box .btn-cta:hover {
            background: var(--bc-secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(244,162,97,.3);
        }
        .cta-box .btn-cta:focus {
            outline: 2px solid rgba(233,196,106,.6);
            outline-offset: 2px;
        }

        /* ===== FAQ 区域 ===== */
        .faq-section {
            padding: 1rem 0 3.5rem;
        }
        .section-title {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            text-align: center;
            margin-bottom: 1.5rem;
            color: var(--bc-primary);
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 3px;
            background: var(--bc-secondary);
            margin: .5rem auto 0;
            border-radius: 2px;
        }
        .accordion-wrapper {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            overflow: hidden;
            box-shadow: var(--bc-shadow-sm);
        }
        .accordion-item {
            border: none;
            border-bottom: 1px solid var(--bc-border);
            background: transparent;
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-button {
            background: transparent;
            padding: 1.1rem 1.5rem;
            font-size: .95rem;
            font-weight: 600;
            color: var(--bc-text);
            display: flex;
            align-items: center;
            gap: .75rem;
            border: none;
            box-shadow: none !important;
        }
        .accordion-button::after {
            display: none;
        }
        .accordion-button .faq-num {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bc-primary);
            color: #fff;
            font-size: .75rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .accordion-button .faq-icon {
            margin-left: auto;
            font-size: 1rem;
            color: var(--bc-primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(27,67,50,.03);
            color: var(--bc-primary);
        }
        .accordion-button:not(.collapsed) .faq-icon {
            transform: rotate(45deg);
        }
        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(244,162,97,.4);
            outline-offset: -2px;
        }
        .accordion-body {
            padding: 1rem 1.5rem 1.5rem 3.25rem;
            font-size: .9rem;
            color: var(--bc-text-sub);
            line-height: 1.8;
            background: #fff;
            border-left: 3px solid var(--bc-primary);
            margin: 0 1.5rem 1rem 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        @media (max-width: 575.98px) {
            .accordion-body {
                padding: .75rem 1rem .75rem 2.5rem;
                margin: 0 .75rem .75rem .75rem;
            }
            .accordion-button {
                padding: .9rem 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #142F24;
            color: rgba(255,255,255,.6);
            padding: 3rem 0 0;
            margin-top: 1rem;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: .75rem;
        }
        .site-footer .footer-brand .brand-icon {
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
        }
        .site-footer h5 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: .02em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: .5rem;
            font-size: .88rem;
        }
        .site-footer ul a {
            color: rgba(255,255,255,.55);
            transition: color .2s;
        }
        .site-footer ul a:hover {
            color: var(--bc-accent);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            margin-top: 2.5rem;
            padding: 1.25rem 0;
            text-align: center;
            font-size: .85rem;
            color: rgba(255,255,255,.4);
        }
        .footer-bottom span {
            opacity: .8;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 991.98px) {
            .news-section {
                padding: 2rem 0 1.5rem;
            }
            .cta-box {
                padding: 2.5rem 1.5rem;
            }
        }
        @media (max-width: 767.98px) {
            .news-list {
                gap: 1rem;
            }
            .news-item {
                padding: 1rem;
            }
            .news-thumb {
                flex: 0 0 120px;
                height: 100px;
            }
            .news-title {
                font-size: .95rem;
            }
            .news-excerpt {
                font-size: .82rem;
            }
        }
        @media (max-width: 575.98px) {
            .news-thumb {
                flex: 0 0 100%;
                height: 160px;
            }
            .cta-box {
                padding: 2rem 1.25rem;
                border-radius: 12px;
            }
            .cta-box .btn-cta {
                width: 100%;
            }
            .footer-bottom {
                padding: 1rem;
            }
        }

/* roulang page: article */
:root {
            --bc-primary: #1B4332;
            --bc-primary-dark: #142F24;
            --bc-secondary: #F4A261;
            --bc-secondary-dark: #E08C4A;
            --bc-accent: #E9C46A;
            --bc-bg: #F7F5F0;
            --bc-surface: #FFFFFF;
            --bc-text: #1F2937;
            --bc-text-sub: #6B7280;
            --bc-border: #E5E7EB;
            --bc-success: #2D6A4F;
            --bc-shadow-sm: 0 1px 3px rgba(0,0,0,.06);
            --bc-shadow-hover: 0 4px 16px rgba(0,0,0,.10);
            --bc-radius: 16px;
            --bc-radius-sm: 10px;
            --bs-body-font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            --bs-body-bg: var(--bc-bg);
            --bs-body-color: var(--bc-text);
            --bs-link-color: var(--bc-primary);
            --bs-link-hover-color: var(--bc-primary-dark);
            --bs-primary: var(--bc-primary);
            --bs-btn-focus-box-shadow: 0 0 0 4px rgba(244,162,97,.35);
        }

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

        body {
            font-family: var(--bs-body-font-family);
            background: var(--bc-bg);
            color: var(--bc-text);
            line-height: 1.75;
            overflow-x: hidden;
            margin: 0;
        }

        body.modal-open {
            padding-right: 0 !important;
        }

        a {
            color: var(--bc-primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        .container {
            max-width: 1200px;
        }

        section {
            padding: clamp(3rem, 6vw, 5rem) 0;
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: .5em;
            letter-spacing: -.01em;
            color: var(--bc-text);
        }

        .section-subtitle {
            color: var(--bc-text-sub);
            margin-bottom: 2rem;
            font-size: .95rem;
        }

        /* ======= 导航 ======= */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(20, 47, 36, .78);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,.08);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            background: var(--bc-primary);
            box-shadow: 0 4px 20px rgba(20,47,36,.35);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 64px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: -.01em;
            color: #fff;
        }

        .navbar-brand:hover {
            color: var(--bc-accent);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--bc-secondary);
            color: #1a1a1a;
            flex-shrink: 0;
        }

        .brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .site-header .navbar-nav {
            gap: .25rem;
        }

        .site-header .nav-link {
            color: rgba(255,255,255,.85);
            font-size: .95rem;
            font-weight: 500;
            padding: .5rem 1rem;
            border-radius: 8px;
            transition: color .2s, background .2s;
        }

        .site-header .nav-link:hover {
            color: #fff;
            background: rgba(255,255,255,.1);
        }

        .site-header .nav-link.active {
            color: #fff;
            font-weight: 600;
            background: rgba(255,255,255,.14);
        }

        .site-header .nav-link.active::after {
            content: '';
            display: block;
            height: 2px;
            width: 22px;
            background: var(--bc-secondary);
            margin: 2px auto 0;
            border-radius: 2px;
        }

        .header-search {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,.35);
            background: transparent;
            color: #fff;
            font-size: 1rem;
            cursor: pointer;
            transition: background .2s, border-color .2s;
        }

        .header-search:hover {
            background: rgba(255,255,255,.12);
            border-color: rgba(255,255,255,.6);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            padding: .5rem 1.35rem;
            border-radius: var(--bc-radius-sm);
            background: var(--bc-secondary);
            color: #1a1a1a;
            font-weight: 700;
            font-size: .9rem;
            border: none;
            transition: background .2s, transform .15s, box-shadow .2s;
        }

        .header-cta:hover {
            background: var(--bc-secondary-dark);
            color: #1a1a1a;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(244,162,97,.35);
        }

        .navbar-toggler {
            border: 1px solid rgba(255,255,255,.4);
            color: #fff;
            border-radius: 8px;
            padding: .3rem .6rem;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(244,162,97,.5);
        }

        .navbar-toggler i {
            font-size: 1.4rem;
            line-height: 1;
        }

        @media (max-width: 991.98px) {
            .site-header {
                height: 56px;
            }

            .site-header .navbar {
                min-height: 56px;
            }

            .site-header .navbar-collapse {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bc-primary-dark);
                display: flex !important;
                align-items: center;
                justify-content: center;
                flex-direction: column;
                padding: 2rem;
                z-index: 1050;
                transform: translateX(100%);
                transition: transform .3s ease;
            }

            .site-header .navbar-collapse.show {
                transform: translateX(0);
            }

            .site-header .navbar-nav {
                flex-direction: column;
                text-align: center;
                gap: .75rem;
                margin-bottom: 1.5rem !important;
            }

            .site-header .nav-link {
                font-size: 1.2rem;
                padding: .6rem 1.5rem;
                color: rgba(255,255,255,.9);
                border-radius: 10px;
            }

            .site-header .nav-link.active {
                background: rgba(255,255,255,.12);
            }

            .site-header .navbar-collapse .d-flex {
                flex-direction: column;
                gap: .75rem !important;
            }

            .site-header .header-cta {
                width: 100%;
                justify-content: center;
                padding: .7rem 1rem;
            }

            .site-header .navbar-brand {
                font-size: 1.15rem;
            }

            .navbar-toggler {
                position: relative;
                z-index: 1060;
            }
        }

        /* ======= 文章 hero ======= */
        .article-hero {
            background: var(--bc-bg);
            padding: 8rem 0 3rem;
            border-bottom: 1px solid var(--bc-border);
            background-image: radial-gradient(circle, rgba(27,67,50,.07) 1px, transparent 1px);
            background-size: 26px 26px;
        }

        .crumb-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .35rem;
            font-size: .875rem;
            color: var(--bc-text-sub);
            margin-bottom: 1.25rem;
        }

        .crumb-nav a {
            color: var(--bc-primary);
            font-weight: 500;
        }

        .crumb-nav a:hover {
            color: var(--bc-primary-dark);
            text-decoration: underline;
        }

        .crumb-nav .sep {
            color: #bbb;
        }

        .crumb-nav .current {
            color: var(--bc-text-sub);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            padding: .3rem .8rem;
            border-radius: 20px;
            background: #FEF3C7;
            color: #92400E;
            font-size: .8rem;
            font-weight: 600;
            margin-bottom: .9rem;
        }

        .article-cat-badge i {
            font-size: .75rem;
        }

        .article-hero h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--bc-text);
            letter-spacing: -.01em;
            margin-bottom: 1rem;
            max-width: 880px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .4rem 1.2rem;
            font-size: .875rem;
            color: var(--bc-text-sub);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }

        .article-meta i {
            font-size: .9rem;
            color: var(--bc-primary);
        }

        .article-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: #d1d5db;
            display: inline-block;
        }

        /* ======= 正文区域 ======= */
        .article-main {
            padding: 2.5rem 0 0;
        }

        .article-content-wrap {
            max-width: 760px;
            margin: 0 auto;
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            box-shadow: var(--bc-shadow-sm);
            padding: clamp(1.5rem, 4vw, 3rem);
            position: relative;
            top: 0;
        }

        .article-body {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: #2d3748;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            color: var(--bc-text);
            line-height: 1.35;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 1.75rem 0 .75rem;
            color: var(--bc-text);
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 1.25em;
        }

        .article-body img {
            border-radius: 12px;
            margin: 1.5rem auto;
            display: block;
        }

        .article-body blockquote {
            border-left: 4px solid var(--bc-primary);
            background: #f8faf9;
            padding: 1rem 1.25rem;
            border-radius: 0 10px 10px 0;
            margin: 1.5rem 0;
            color: #374151;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            display: block;
            overflow-x: auto;
            font-size: .95rem;
        }

        .article-body table th,
        .article-body table td {
            padding: .7rem 1rem;
            border: 1px solid var(--bc-border);
            text-align: left;
        }

        .article-body table th {
            background: var(--bc-primary);
            color: #fff;
            font-weight: 600;
            white-space: nowrap;
        }

        .article-body ul,
        .article-body ol {
            margin: 1rem 0 1.25rem;
            padding-left: 1.4rem;
        }

        .article-body li {
            margin-bottom: .45rem;
        }

        .article-body a {
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .content-not-found {
            text-align: center;
            padding: 3rem 1rem;
        }

        .content-not-found i {
            font-size: 3rem;
            color: #d1d5db;
            margin-bottom: 1rem;
            display: block;
        }

        .content-not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: .75rem;
        }

        .content-not-found p {
            color: var(--bc-text-sub);
            margin-bottom: 1.5rem;
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .45rem;
            background: var(--bc-primary);
            color: #fff;
            font-weight: 600;
            padding: .65rem 1.75rem;
            border-radius: var(--bc-radius-sm);
            border: none;
            transition: background .2s, transform .15s, box-shadow .2s;
        }

        .btn-brand:hover {
            background: var(--bc-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(27,67,50,.25);
        }

        .btn-brand:focus-visible {
            outline: 2px solid rgba(244,162,97,.5);
            outline-offset: 2px;
        }

        /* ======= 文末标签和上一篇 ======= */
        .article-bottom {
            padding: 2.5rem 0 0;
        }

        .article-bottom .container {
            max-width: 960px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .5rem;
            margin-bottom: 1.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--bc-border);
        }

        .tags-label {
            font-size: .9rem;
            color: var(--bc-text-sub);
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }

        .tag-item {
            display: inline-block;
            padding: .3rem .75rem;
            border-radius: 6px;
            background: #f1f5f4;
            color: var(--bc-primary);
            font-size: .8rem;
            font-weight: 500;
            transition: background .2s, color .2s;
        }

        .tag-item:hover {
            background: var(--bc-primary);
            color: #fff;
        }

        .prev-next {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        .pn-card {
            display: block;
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            padding: 1.2rem 1.5rem;
            box-shadow: var(--bc-shadow-sm);
            transition: box-shadow .25s, transform .25s, border-color .25s;
        }

        .pn-card:hover {
            box-shadow: var(--bc-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--bc-primary);
        }

        .pn-direction {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            font-size: .8rem;
            color: var(--bc-text-sub);
            margin-bottom: .4rem;
        }

        .pn-title {
            display: block;
            font-size: .95rem;
            font-weight: 600;
            color: var(--bc-text);
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

        .pn-card:hover .pn-title {
            color: var(--bc-primary);
        }

        /* ======= 相关推荐 ======= */
        .related-section {
            padding: 4rem 0;
            background: var(--bc-bg);
        }

        .related-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.5rem;
        }

        .related-section .section-header h2 {
            margin-bottom: 0;
        }

        .related-card {
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--bc-shadow-sm);
            transition: box-shadow .3s, transform .3s, border-color .3s;
        }

        .related-card:hover {
            box-shadow: var(--bc-shadow-hover);
            transform: translateY(-4px);
            border-color: var(--bc-primary);
        }

        .related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }

        .related-body {
            padding: 1.25rem 1.25rem 1.4rem;
        }

        .tag-badge {
            display: inline-block;
            padding: .2rem .6rem;
            border-radius: 5px;
            background: #fef3c7;
            color: #92400e;
            font-size: .75rem;
            font-weight: 600;
            margin-bottom: .6rem;
        }

        .related-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: .5rem;
        }

        .related-body h3 a {
            color: var(--bc-text);
        }

        .related-body h3 a:hover {
            color: var(--bc-primary);
        }

        .related-body p {
            font-size: .875rem;
            color: var(--bc-text-sub);
            margin-bottom: .5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-link {
            font-size: .85rem;
            font-weight: 600;
            color: var(--bc-primary);
            display: inline-flex;
            align-items: center;
            gap: .25rem;
        }

        .related-link i {
            font-size: .75rem;
            transition: transform .2s;
        }

        .related-link:hover i {
            transform: translateX(3px);
        }

        /* ======= CTA 区块 ======= */
        .cta-section {
            background: var(--bc-primary);
            background-image: linear-gradient(120deg, rgba(255,255,255,.05) 25%, transparent 25%),
                linear-gradient(60deg, rgba(255,255,255,.04) 25%, transparent 25%),
                linear-gradient(120deg, transparent 75%, rgba(255,255,255,.05) 75%),
                linear-gradient(60deg, transparent 75%, rgba(255,255,255,.04) 75%);
            background-size: 60px 60px;
            padding: clamp(3.5rem, 6vw, 5rem) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: .75rem;
        }

        .cta-section p {
            color: rgba(255,255,255,.7);
            max-width: 620px;
            margin: 0 auto 1.5rem;
            font-size: .95rem;
            line-height: 1.7;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: var(--bc-secondary);
            color: #1a1a1a;
            font-weight: 700;
            padding: .8rem 2.2rem;
            border-radius: var(--bc-radius-sm);
            font-size: 1rem;
            border: none;
            transition: background .25s, transform .15s, box-shadow .25s;
        }

        .cta-button:hover {
            background: var(--bc-secondary-dark);
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(244,162,97,.35);
        }

        .cta-button:focus-visible {
            outline: 2px solid rgba(255,255,255,.7);
            outline-offset: 3px;
        }

        .cta-decor {
            position: absolute;
            width: 90px;
            height: 90px;
            border: 1px solid rgba(233,196,106,.25);
            transform: rotate(45deg);
        }

        .cta-decor-1 {
            top: -30px;
            left: 8%;
        }

        .cta-decor-2 {
            bottom: -30px;
            right: 10%;
            width: 130px;
            height: 130px;
        }

        /* ======= 页脚 ======= */
        .site-footer {
            background: #142F24;
            padding: 4rem 0 0;
            color: rgba(255,255,255,.65);
        }

        .site-footer h5 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }

        .site-footer a {
            color: rgba(255,255,255,.6);
            font-size: .9rem;
            transition: color .2s;
        }

        .site-footer a:hover {
            color: var(--bc-accent);
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
            line-height: 2.2;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: .75rem;
        }

        .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--bc-secondary);
            color: #1a1a1a;
            border-radius: 8px;
        }

        .footer-brand .brand-icon svg {
            width: 18px;
            height: 18px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            margin-top: 3rem;
            padding: 1.5rem 0;
            text-align: center;
            font-size: .875rem;
            color: rgba(255,255,255,.45);
        }

        /* ======= 登录模态框 ======= */
        .login-modal .modal-content {
            border-radius: 18px;
            overflow: hidden;
            border: none;
            box-shadow: 0 20px 60px rgba(20,47,36,.3);
        }

        .login-brand-side {
            background: var(--bc-primary);
            padding: 3rem 2rem;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .login-brand-side .brand-icon {
            width: 44px;
            height: 44px;
            margin-bottom: 1rem;
        }

        .login-brand-side h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: .5rem;
        }

        .login-brand-side p {
            color: rgba(255,255,255,.7);
            font-size: .875rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        .login-form-side {
            padding: 2.5rem 2rem;
        }

        .login-form-side h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: .25rem;
            color: var(--bc-text);
        }

        .login-form-side .form-label {
            font-size: .875rem;
            color: var(--bc-text-sub);
            margin-bottom: .35rem;
            font-weight: 500;
        }

        .login-form-side .form-control {
            border-radius: var(--bc-radius-sm);
            border: 1px solid var(--bc-border);
            padding: .6rem .9rem;
            transition: border-color .2s, box-shadow .2s;
        }

        .login-form-side .form-control:focus {
            border-color: var(--bc-primary);
            box-shadow: 0 0 0 3px rgba(27,67,50,.15);
        }

        .login-form-side .btn-brand {
            width: 100%;
        }

        .login-links {
            display: flex;
            justify-content: space-between;
            margin-top: .75rem;
            font-size: .85rem;
        }

        .login-links a {
            color: var(--bc-text-sub);
        }

        .login-links a:hover {
            color: var(--bc-primary);
        }

        /* ======= 响应式 ======= */
        @media (max-width: 991.98px) {
            .site-header {
                height: 56px;
            }

            .site-header .navbar {
                min-height: 56px;
            }

            .article-hero {
                padding: 5.5rem 0 2rem;
            }

            .article-hero h1 {
                font-size: 1.7rem;
            }

            .related-section .row {
                --bs-gutter-y: 1.5rem;
            }
        }

        @media (max-width: 767.98px) {
            .article-content-wrap {
                padding: 1.5rem;
                border-radius: 12px;
            }

            .article-main {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .article-bottom .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .prev-next {
                grid-template-columns: 1fr;
                gap: .75rem;
            }

            .related-section .row {
                --bs-gutter-y: 1rem;
            }

            .cta-decor {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .article-hero h1 {
                font-size: 1.45rem;
            }

            .article-meta {
                gap: .3rem .8rem;
                font-size: .8rem;
            }

            .article-body {
                font-size: 1rem;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-body h3 {
                font-size: 1.1rem;
            }

            .login-brand-side {
                display: none !important;
            }

            .login-form-side {
                padding: 1.8rem 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --bc-primary: #1B4332;
            --bc-primary-dark: #142F24;
            --bc-secondary: #F4A261;
            --bc-secondary-dark: #E08C4A;
            --bc-accent: #E9C46A;
            --bc-bg: #F7F5F0;
            --bc-surface: #FFFFFF;
            --bc-text: #1F2937;
            --bc-text-sub: #6B7280;
            --bc-border: #E5E7EB;
            --bc-success: #2D6A4F;
            --bc-shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --bc-shadow-hover: 0 4px 16px rgba(0, 0, 0, .10);
            --bc-radius: 16px;
            --bc-radius-sm: 10px;
            --bs-body-font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            --bs-body-bg: var(--bc-bg);
            --bs-link-color: var(--bc-primary);
            --bs-link-hover-color: var(--bc-primary-dark);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--bs-body-font-family);
            background: var(--bc-bg);
            color: var(--bc-text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--bc-primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: clamp(1rem, 4vw, 3rem);
            padding-right: clamp(1rem, 4vw, 3rem);
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: background .35s ease, box-shadow .35s ease;
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: var(--bc-primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, .15);
        }

        .site-header .navbar {
            padding: 0;
            min-height: 0;
        }

        .site-header .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--bc-primary);
            margin-right: 0;
        }

        .site-header.scrolled .navbar-brand {
            color: #fff;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--bc-primary);
            color: #fff;
            flex-shrink: 0;
        }

        .brand-icon svg {
            width: 22px;
            height: 22px;
        }

        .site-header .navbar-nav {
            gap: .25rem;
        }

        .site-header .nav-link {
            color: var(--bc-text);
            font-weight: 500;
            font-size: .95rem;
            padding: .5rem 1rem !important;
            border-radius: 8px;
            transition: background .2s, color .2s;
        }

        .site-header .nav-link:hover {
            color: var(--bc-primary);
            background: rgba(27, 67, 50, .06);
        }

        .site-header .nav-link.active {
            color: var(--bc-primary);
            font-weight: 600;
        }

        .site-header .nav-link.active::after {
            content: '';
            display: block;
            height: 2px;
            border-radius: 2px;
            background: var(--bc-secondary);
            margin-top: 2px;
        }

        .site-header.scrolled .nav-link {
            color: rgba(255, 255, 255, .85);
        }

        .site-header.scrolled .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .12);
        }

        .site-header.scrolled .nav-link.active {
            color: #fff;
        }

        .header-search {
            border: none;
            background: transparent;
            color: var(--bc-text);
            font-size: 1.1rem;
            padding: .4rem .6rem;
            border-radius: 8px;
            transition: background .2s, color .2s;
        }

        .header-search:hover {
            background: rgba(27, 67, 50, .08);
            color: var(--bc-primary);
        }

        .site-header.scrolled .header-search {
            color: #fff;
        }

        .site-header.scrolled .header-search:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
            border: none;
            border-radius: var(--bc-radius-sm);
            padding: .5rem 1.25rem;
            font-weight: 700;
            font-size: .9rem;
            border: none;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .header-cta:hover {
            background: var(--bc-secondary-dark);
            color: var(--bc-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(244, 162, 97, .4);
        }

        .navbar-toggler {
            border: none;
            color: var(--bc-primary);
            padding: .25rem .5rem;
            font-size: 1.5rem;
            box-shadow: none !important;
        }

        .site-header.scrolled .navbar-toggler {
            color: #fff;
        }

        .page-banner {
            padding: 130px 0 55px;
            background: var(--bc-bg);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--bc-border);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(27, 67, 50, .08) 0%, transparent 55%);
            pointer-events: none;
        }

        .page-banner .banner-inner {
            display: flex;
            align-items: center;
            gap: 3rem;
        }

        .page-banner .banner-text {
            flex: 0 0 60%;
        }

        .page-banner .banner-image {
            flex: 1;
            border-radius: var(--bc-radius);
            overflow: hidden;
            box-shadow: var(--bc-shadow-hover);
        }

        .page-banner .banner-image img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

        .page-banner .breadcrumb {
            margin-bottom: 1rem;
            font-size: .85rem;
            color: var(--bc-text-sub);
        }

        .page-banner .breadcrumb a {
            color: var(--bc-text-sub);
        }

        .page-banner .breadcrumb a:hover {
            color: var(--bc-primary);
        }

        .page-banner .breadcrumb-item + .breadcrumb-item::before {
            content: '/';
            color: var(--bc-text-sub);
        }

        .page-banner h1 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--bc-primary);
            margin-bottom: .5rem;
            line-height: 1.25;
        }

        .page-banner .banner-desc {
            color: var(--bc-text-sub);
            font-size: 1rem;
            max-width: 560px;
            margin-bottom: 0;
        }

        .member-compare {
            padding: clamp(3rem, 6vw, 5rem) 0;
        }

        .member-compare .compare-wrap {
            background: var(--bc-surface);
            border-radius: var(--bc-radius);
            border: 1px solid var(--bc-border);
            padding: 2rem;
            box-shadow: var(--bc-shadow-sm);
            height: 100%;
        }

        .member-compare .compare-wrap h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--bc-text);
            margin-bottom: .5rem;
        }

        .member-compare .compare-wrap .section-sub {
            color: var(--bc-text-sub);
            margin-bottom: 1.5rem;
        }

        .member-compare .table {
            margin-bottom: 1.5rem;
            border-collapse: separate;
            border-spacing: 0;
        }

        .member-compare .table thead th {
            background: var(--bc-primary);
            color: #fff;
            font-weight: 600;
            font-size: .9rem;
            padding: .75rem 1rem;
            border: none;
            text-align: center;
        }

        .member-compare .table thead th:first-child {
            border-radius: 8px 0 0 0;
        }

        .member-compare .table thead th:last-child {
            border-radius: 0 8px 0 0;
        }

        .member-compare .table tbody td {
            padding: .75rem 1rem;
            vertical-align: middle;
            border-top: 1px solid var(--bc-border);
            background: var(--bc-surface);
            text-align: center;
            font-size: .9rem;
        }

        .member-compare .table tbody tr:nth-child(even) td {
            background: #faf9f6;
        }

        .member-compare .table tbody tr:last-child td:first-child {
            border-radius: 0 0 0 8px;
        }

        .member-compare .table tbody tr:last-child td:last-child {
            border-radius: 0 0 8px 0;
        }

        .member-compare .table .highlight-col {
            border-left: 2px solid var(--bc-primary);
            border-right: 2px solid var(--bc-primary);
            background: rgba(233, 196, 106, .08) !important;
            font-weight: 600;
            color: var(--bc-primary);
        }

        .member-compare .table .recommend-badge {
            display: inline-block;
            background: var(--bc-accent);
            color: var(--bc-primary-dark);
            font-size: .7rem;
            font-weight: 700;
            padding: .15rem .5rem;
            border-radius: 20px;
            margin-left: .3rem;
            vertical-align: middle;
        }

        .compare-actions {
            display: flex;
            flex-direction: column;
            gap: .5rem;
        }

        .compare-actions .btn {
            width: 100%;
            border-radius: var(--bc-radius-sm);
            padding: .6rem 1.5rem;
            font-weight: 600;
            font-size: .9rem;
            transition: all .2s ease;
        }

        .btn-primary-bc {
            background: var(--bc-primary);
            color: #fff;
            border: 1px solid var(--bc-primary);
        }

        .btn-primary-bc:hover {
            background: var(--bc-primary-dark);
            border-color: var(--bc-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(27, 67, 50, .3);
            color: #fff;
        }

        .btn-secondary-bc {
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
            border: 1px solid var(--bc-secondary);
            font-weight: 700;
        }

        .btn-secondary-bc:hover {
            background: var(--bc-secondary-dark);
            border-color: var(--bc-secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(244, 162, 97, .4);
            color: var(--bc-primary-dark);
        }

        .btn-outline-bc {
            background: transparent;
            color: var(--bc-primary);
            border: 1px solid var(--bc-border);
        }

        .btn-outline-bc:hover {
            border-color: var(--bc-primary);
            background: rgba(27, 67, 50, .04);
            transform: translateY(-2px);
            color: var(--bc-primary);
        }

        .level-cards {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            height: 100%;
        }

        .level-card {
            position: relative;
            background: var(--bc-surface);
            border-radius: var(--bc-radius);
            border: 1px solid var(--bc-border);
            padding: 1.5rem;
            box-shadow: var(--bc-shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            overflow: hidden;
        }

        .level-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bc-shadow-hover);
            border-color: var(--bc-primary);
        }

        .level-card .level-head {
            display: flex;
            align-items: center;
            gap: .75rem;
            margin-bottom: .75rem;
        }

        .level-card .level-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
            background: rgba(27, 67, 50, .1);
            color: var(--bc-primary);
        }

        .level-card .level-name {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--bc-text);
        }

        .level-card .level-tag {
            font-size: .75rem;
            color: var(--bc-text-sub);
        }

        .level-card .level-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .level-card .level-points li {
            display: flex;
            align-items: flex-start;
            gap: .55rem;
            font-size: .88rem;
            color: var(--bc-text);
            line-height: 1.6;
            margin-bottom: .4rem;
        }

        .level-card .level-points li:last-child {
            margin-bottom: 0;
        }

        .level-card .level-points li i {
            color: var(--bc-success);
            font-size: .85rem;
            margin-top: .15rem;
        }

        .level-card.featured {
            border-color: var(--bc-primary);
            background: linear-gradient(145deg, #f0f5f1 0%, #fff 100%);
            box-shadow: 0 4px 16px rgba(27, 67, 50, .08);
        }

        .level-card.featured::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 60px;
            height: 60px;
            background: radial-gradient(circle at top right, var(--bc-accent) 0%, transparent 70%);
            opacity: .3;
            pointer-events: none;
        }

        .level-card.vip .level-icon {
            background: rgba(233, 196, 106, .2);
            color: #b18a2b;
        }

        .member-process {
            padding: 0 0 clamp(3rem, 6vw, 5rem);
        }

        .member-process .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .member-process .section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            margin-bottom: .5rem;
        }

        .member-process .section-title p {
            color: var(--bc-text-sub);
            max-width: 560px;
            margin: 0 auto;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .process-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: var(--bc-surface);
            border-radius: var(--bc-radius);
            border: 1px solid var(--bc-border);
            box-shadow: var(--bc-shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease;
            position: relative;
        }

        .process-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bc-shadow-hover);
        }

        .process-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bc-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .process-card .step-icon {
            font-size: 1.8rem;
            color: var(--bc-secondary);
            margin-bottom: .75rem;
            display: block;
        }

        .process-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: .5rem;
            color: var(--bc-text);
        }

        .process-card p {
            font-size: .85rem;
            color: var(--bc-text-sub);
            margin-bottom: 0;
        }

        .member-stats {
            padding: clamp(2rem, 4vw, 3rem) 0;
            background: var(--bc-primary);
            border-radius: var(--bc-radius);
            color: #fff;
            margin-bottom: clamp(3rem, 6vw, 5rem);
        }

        .member-stats .container {
            position: relative;
        }

        .member-stats .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }

        .stats-item {
            text-align: center;
            padding: 1rem;
        }

        .stats-item .stat-num {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 800;
            color: var(--bc-accent);
            line-height: 1.2;
        }

        .stats-item .stat-label {
            font-size: .9rem;
            color: rgba(255, 255, 255, .75);
            margin-top: .25rem;
        }

        .member-faq {
            padding: 0 0 clamp(3rem, 6vw, 5rem);
        }

        .member-faq .section-title {
            margin-bottom: 2rem;
        }

        .member-faq .section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            margin-bottom: .5rem;
        }

        .member-faq .section-title p {
            color: var(--bc-text-sub);
        }

        .member-faq .accordion-item {
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius-sm);
            margin-bottom: .75rem;
            overflow: hidden;
            background: var(--bc-surface);
            box-shadow: var(--bc-shadow-sm);
        }

        .member-faq .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--bc-text);
            padding: 1rem 1.25rem;
            background: var(--bc-surface);
            border: none;
            box-shadow: none;
        }

        .member-faq .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231B4332'%3E%3Cpath d='M8 1a1 1 0 0 1 1 1v5h5a1 1 0 1 1 0 2H9v5a1 1 0 1 1-2 0V9H2a1 1 0 1 1 0-2h5V2a1 1 0 0 1 1-1z'/%3E%3C/svg%3E");
            transition: transform .25s ease;
        }

        .member-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }

        .member-faq .accordion-button:not(.collapsed) {
            background: var(--bc-surface);
            color: var(--bc-primary);
            box-shadow: none;
        }

        .member-faq .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(244, 162, 97, .5);
            outline: none;
        }

        .member-faq .accordion-body {
            padding: .75rem 1.25rem 1.25rem;
            color: var(--bc-text-sub);
            font-size: .92rem;
            border-left: 4px solid var(--bc-primary);
            margin: 0 1.25rem 1rem;
            background: #faf9f6;
            border-radius: 0 8px 8px 0;
            line-height: 1.75;
        }

        .member-cta {
            padding: clamp(2.5rem, 5vw, 4rem) 0;
            background: var(--bc-primary-dark);
            position: relative;
            overflow: hidden;
            border-radius: var(--bc-radius);
            text-align: center;
            margin-bottom: clamp(3rem, 6vw, 5rem);
        }

        .member-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: linear-gradient(45deg, transparent 45%, rgba(244, 162, 97, .08) 50%, transparent 55%);
            animation: ctaSlide 8s linear infinite;
        }

        @keyframes ctaSlide {
            0% {
                transform: translateX(-30%);
            }
            100% {
                transform: translateX(30%);
            }
        }

        .member-cta .cta-content {
            position: relative;
            z-index: 1;
        }

        .member-cta h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: .75rem;
        }

        .member-cta p {
            color: rgba(255, 255, 255, .7);
            font-size: 1.05rem;
            margin-bottom: 1.5rem;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }

        .member-cta .btn-cta-lg {
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
            border: none;
            border-radius: var(--bc-radius-sm);
            padding: .75rem 2.5rem;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all .2s ease;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
        }

        .member-cta .btn-cta-lg:hover {
            background: var(--bc-secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(244, 162, 97, .4);
            color: var(--bc-primary-dark);
        }

        .btn:focus,
        .btn-primary-bc:focus,
        .btn-secondary-bc:focus,
        .btn-outline-bc:focus,
        .header-cta:focus {
            outline: 2px solid rgba(244, 162, 97, .5);
            outline-offset: 2px;
            box-shadow: none;
        }

        .site-footer {
            background: #142F24 !important;
            color: rgba(255, 255, 255, .7);
            padding: clamp(3rem, 5vw, 4.5rem) 0 0;
            margin-top: 2rem;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: .5rem;
            color: #fff;
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }

        .site-footer .footer-brand .brand-icon {
            background: var(--bc-secondary);
            color: var(--bc-primary-dark);
        }

        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: .6rem;
        }

        .site-footer ul a {
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            transition: color .2s;
        }

        .site-footer ul a:hover {
            color: var(--bc-accent);
        }

        .site-footer .footer-bottom {
            margin-top: 3rem;
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 1.25rem 0;
            text-align: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .45);
        }

        @media (max-width: 1199.98px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 991.98px) {
            .site-header {
                height: 56px;
            }

            .page-banner .banner-inner {
                flex-direction: column;
                gap: 1.5rem;
            }

            .page-banner .banner-text {
                flex: 0 0 100%;
            }

            .page-banner .banner-image {
                width: 100%;
                max-width: 360px;
            }

            .member-compare .compare-wrap {
                margin-bottom: 2rem;
            }

            .navbar-collapse {
                background: var(--bc-primary);
                border-radius: 0 0 var(--bc-radius) var(--bc-radius);
                padding: 1rem;
                margin-top: .5rem;
                box-shadow: 0 8px 30px rgba(0, 0, 0, .2);
            }

            .site-header .nav-link {
                color: rgba(255, 255, 255, .9) !important;
            }

            .site-header .nav-link:hover {
                background: rgba(255, 255, 255, .12);
                color: #fff !important;
            }

            .site-header .nav-link.active {
                color: var(--bc-accent) !important;
            }

            .header-search {
                color: #fff !important;
            }

            .header-search:hover {
                background: rgba(255, 255, 255, .15);
                color: #fff !important;
            }

            .level-cards {
                gap: 1rem;
            }
        }

        @media (max-width: 767.98px) {
            .process-grid {
                grid-template-columns: 1fr;
            }

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

            .member-stats {
                border-radius: 12px;
                margin-left: .5rem;
                margin-right: .5rem;
            }

            .member-cta {
                margin-left: .5rem;
                margin-right: .5rem;
                border-radius: 12px;
            }

            .member-compare {
                padding-top: 2.5rem;
            }

            .page-banner {
                padding-top: 110px;
            }
        }

        @media (max-width: 575.98px) {
            .page-banner .banner-image {
                max-width: 100%;
            }

            .member-compare .compare-wrap {
                padding: 1.25rem;
            }

            .member-compare .table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }

            .member-cta .btn-cta-lg {
                width: 100%;
                justify-content: center;
            }

            .process-card {
                padding: 1.25rem;
            }

            .stats-item {
                padding: .5rem;
            }

            .stats-item .stat-num {
                font-size: 1.5rem;
            }

            .stats-item .stat-label {
                font-size: .8rem;
            }

            .level-card {
                padding: 1.25rem;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --bc-primary: #1B4332;
            --bc-primary-dark: #142F24;
            --bc-secondary: #F4A261;
            --bc-secondary-dark: #E08C4A;
            --bc-accent: #E9C46A;
            --bc-bg: #F7F5F0;
            --bc-surface: #FFFFFF;
            --bc-text: #1F2937;
            --bc-text-sub: #6B7280;
            --bc-border: #E5E7EB;
            --bc-success: #2D6A4F;
            --bc-shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --bc-shadow-hover: 0 4px 16px rgba(0, 0, 0, .10);
            --bc-radius: 16px;
            --bc-radius-sm: 10px;
            --bs-body-font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            --bs-body-bg: var(--bc-bg);
            --bs-body-color: var(--bc-text);
            --bs-primary: var(--bc-primary);
            --bs-primary-rgb: 27, 67, 50;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bs-body-font-family);
            background: var(--bc-bg);
            color: var(--bc-text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--bc-primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--bc-primary-dark);
        }
        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .container {
            max-width: 1200px;
            padding-left: clamp(1rem, 4vw, 3rem);
            padding-right: clamp(1rem, 4vw, 3rem);
        }
        section {
            padding: clamp(3rem, 6vw, 5rem) 0;
        }
        .section-head {
            margin-bottom: 2rem;
            max-width: 760px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--bc-text);
            margin-bottom: .5em;
        }
        .section-head p {
            font-size: .9375rem;
            color: var(--bc-text-sub);
            margin-bottom: 0;
        }

        /* ===== 按钮体系 ===== */
        .btn {
            border-radius: var(--bc-radius-sm);
            font-weight: 600;
            padding: .65rem 1.75rem;
            transition: all .25s ease;
        }
        .btn-primary {
            --bs-btn-bg: var(--bc-primary);
            --bs-btn-border-color: var(--bc-primary);
            --bs-btn-color: #fff;
            --bs-btn-hover-bg: var(--bc-primary-dark);
            --bs-btn-hover-border-color: var(--bc-primary-dark);
            --bs-btn-hover-color: #fff;
            --bs-btn-active-bg: var(--bc-primary-dark);
            --bs-btn-active-border-color: var(--bc-primary-dark);
            --bs-btn-focus-shadow-rgb: 27, 67, 50;
        }
        .btn-cta {
            background: var(--bc-secondary);
            border: none;
            color: var(--bc-text);
            font-weight: 700;
            border-radius: var(--bc-radius-sm);
            padding: .72rem 2rem;
            transition: all .25s ease;
            display: inline-block;
        }
        .btn-cta:hover {
            background: var(--bc-secondary-dark);
            color: var(--bc-text);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(244, 162, 97, .35);
        }
        .btn-outline-primary {
            --bs-btn-color: var(--bc-primary);
            --bs-btn-border-color: var(--bc-border);
            --bs-btn-hover-color: var(--bc-primary);
            --bs-btn-hover-bg: rgba(27, 67, 50, .04);
            --bs-btn-hover-border-color: var(--bc-primary);
            --bs-btn-active-bg: rgba(27, 67, 50, .08);
            --bs-btn-active-border-color: var(--bc-primary);
            border-radius: var(--bc-radius-sm);
            font-weight: 600;
        }
        .btn:focus,
        .btn-cta:focus {
            outline: 2px solid rgba(244, 162, 97, .5);
            outline-offset: 2px;
            box-shadow: none;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bc-primary);
            box-shadow: 0 2px 12px rgba(0, 0, 0, .08);
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            padding: 0;
            min-height: 64px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: .02em;
            padding: 0;
        }
        .navbar-brand:hover {
            color: var(--bc-accent);
        }
        .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .12);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--bc-accent);
            flex-shrink: 0;
        }
        .brand-icon svg {
            width: 20px;
            height: 20px;
        }
        .site-header .navbar-nav .nav-link {
            color: rgba(255, 255, 255, .85);
            font-size: .9375rem;
            font-weight: 500;
            padding: .45rem 1rem;
            border-radius: 8px;
            transition: all .2s ease;
            position: relative;
        }
        .site-header .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--bc-accent);
            font-weight: 600;
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0;
            height: 2px;
            background: var(--bc-accent);
            border-radius: 2px;
        }
        .header-search {
            background: rgba(255, 255, 255, .1);
            border: none;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all .2s ease;
        }
        .header-search:hover {
            background: rgba(255, 255, 255, .2);
            color: var(--bc-accent);
        }
        .header-cta {
            background: var(--bc-secondary);
            color: var(--bc-text);
            border-radius: var(--bc-radius-sm);
            padding: .45rem 1.25rem;
            font-weight: 700;
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
            transition: all .25s ease;
        }
        .header-cta:hover {
            background: var(--bc-secondary-dark);
            color: var(--bc-text);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: none;
            color: #fff;
            font-size: 1.4rem;
            padding: 0;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .header-search-box {
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bc-primary-dark);
            padding: 1rem 0;
            display: none;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
            z-index: 1040;
        }
        .header-search-box.active {
            display: block;
        }
        .header-search-box .form-control {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            border-radius: var(--bc-radius-sm);
            padding: .6rem 1rem;
        }
        .header-search-box .form-control::placeholder {
            color: rgba(255, 255, 255, .5);
        }
        .header-search-box .form-control:focus {
            background: rgba(255, 255, 255, .15);
            border-color: var(--bc-accent);
            box-shadow: 0 0 0 2px rgba(233, 196, 106, .25);
            color: #fff;
        }

        /* ===== 分类页 Banner ===== */
        .category-banner {
            background: var(--bc-bg);
            padding: 3.5rem 0 3rem;
            position: relative;
            border-bottom: 1px solid var(--bc-border);
            overflow: hidden;
        }
        .category-banner::after {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 260px;
            height: 260px;
            background: rgba(233, 196, 106, .08);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-banner .breadcrumb-nav {
            font-size: .85rem;
            color: var(--bc-text-sub);
            margin-bottom: .75rem;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .category-banner .breadcrumb-nav a {
            color: var(--bc-primary);
            font-weight: 500;
        }
        .category-banner .breadcrumb-nav .sep {
            color: var(--bc-border);
        }
        .category-banner h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--bc-text);
            margin-bottom: .5rem;
            letter-spacing: -.01em;
        }
        .category-banner .banner-desc {
            font-size: 1rem;
            color: var(--bc-text-sub);
            max-width: 520px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .category-banner .banner-img-wrap {
            position: relative;
            text-align: center;
        }
        .category-banner .banner-img-wrap img {
            border-radius: var(--bc-radius);
            box-shadow: var(--bc-shadow-hover);
            max-height: 220px;
            width: auto;
            margin: 0 auto;
            object-fit: cover;
            border: 4px solid #fff;
        }
        .category-banner .banner-badge {
            position: absolute;
            right: 10%;
            bottom: 10px;
            background: var(--bc-accent);
            color: var(--bc-text);
            font-size: .78rem;
            font-weight: 700;
            padding: .25rem .75rem;
            border-radius: 20px;
            box-shadow: var(--bc-shadow-sm);
        }

        /* ===== 快速帮助 ===== */
        .quick-help {
            padding-top: 3rem;
        }
        .quick-help .section-head {
            margin-bottom: 1.5rem;
        }
        .quick-card {
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius);
            padding: 1.5rem;
            box-shadow: var(--bc-shadow-sm);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .quick-card:hover {
            transform: translateY(-4px);
            border-color: var(--bc-primary);
            box-shadow: var(--bc-shadow-hover);
        }
        .quick-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(27, 67, 50, .08);
            color: var(--bc-primary);
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }
        .quick-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--bc-text);
            margin-bottom: .5rem;
        }
        .quick-card p {
            font-size: .875rem;
            color: var(--bc-text-sub);
            line-height: 1.7;
            margin-bottom: 1rem;
            flex: 1;
        }
        .quick-link {
            font-size: .875rem;
            font-weight: 600;
            color: var(--bc-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .2s ease;
        }
        .quick-link:hover {
            gap: 8px;
            color: var(--bc-primary-dark);
        }

        /* ===== FAQ 区块 ===== */
        .faq-block {
            background: var(--bc-surface);
            border-top: 1px solid var(--bc-border);
            border-bottom: 1px solid var(--bc-border);
        }
        .faq-col-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--bc-text);
            padding-bottom: .5rem;
            border-bottom: 2px solid var(--bc-accent);
            display: inline-block;
            margin-bottom: 1.5rem;
        }
        .accordion-item {
            background: var(--bc-surface);
            border: 1px solid var(--bc-border);
            border-radius: var(--bc-radius-sm) !important;
            overflow: hidden;
            margin-bottom: .75rem;
        }
        .accordion-button {
            background: var(--bc-surface);
            color: var(--bc-text);
            font-weight: 600;
            font-size: .9375rem;
            padding: 1rem 1.25rem;
            box-shadow: none !important;
            transition: background .25s ease, color .25s ease;
        }
        .accordion-button .acc-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--bc-primary);
            display: inline-block;
            margin-right: 12px;
            flex-shrink: 0;
            transition: background .25s ease;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(27, 67, 50, .04);
            color: var(--bc-primary);
        }
        .accordion-button:not(.collapsed) .acc-dot {
            background: var(--bc-secondary);
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%231B4332' stroke-width='1.6'%3e%3cpath d='M8 3.5v9M3.5 8h9'/%3e%3c/svg%3e");
            background-size: .9rem;
            background-position: center;
            transition: transform .25s ease;
            width: 1rem;
            height: 1rem;
        }
        .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%231B4332' stroke-width='1.6'%3e%3cpath d='M3.5 8h9'/%3e%3c/svg%3e");
            transform: rotate(0);
        }
        .accordion-body {
            padding: 1.15rem 1.25rem;
            border-left: 4px solid var(--bc-primary);
            font-size: .875rem;
            color: var(--bc-text-sub);
            line-height: 1.8;
            background: var(--bc-surface);
        }

        /* ===== 自助服务 ===== */
        .steps-section {
            background: var(--bc-bg);
        }
        .step-item {
            text-align: center;
            padding: 1.5rem 1rem;
            position: relative;
        }
        .step-num {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--bc-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            box-shadow: 0 4px 12px rgba(27, 67, 50, .25);
        }
        .step-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: .5rem;
            color: var(--bc-text);
        }
        .step-item p {
            font-size: .875rem;
            color: var(--bc-text-sub);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 260px;
            margin-left: auto;
            margin-right: auto;
        }
        .step-line {
            position: absolute;
            top: 41px;
            left: 60%;
            width: 80%;
            height: 2px;
            background: linear-gradient(90deg, var(--bc-primary), var(--bc-accent));
            border-radius: 2px;
            opacity: .3;
        }
        .step-item:last-child .step-line {
            display: none;
        }

        /* ===== 联系信息卡片 ===== */
        .contact-panel {
            background: var(--bc-surface);
            border-top: 1px solid var(--bc-border);
            border-bottom: 1px solid var(--bc-border);
        }
        .contact-inner {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            background: linear-gradient(120deg, rgba(27, 67, 50, .92), rgba(20, 47, 36, .94)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 2.5rem;
            color: #fff;
        }
        .contact-inner h2 {
            color: #fff;
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: .5rem;
        }
        .contact-inner .section-desc {
            color: rgba(255, 255, 255, .7);
            font-size: .9375rem;
            margin-bottom: 2rem;
        }
        .contact-item {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--bc-radius);
            padding: 1.5rem 1.25rem;
            text-align: center;
            transition: all .3s ease;
            height: 100%;
        }
        .contact-item:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-3px);
        }
        .contact-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--bc-accent);
            color: var(--bc-primary-dark);
            font-size: 1.2rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: .75rem;
        }
        .contact-label {
            font-size: .8rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: .25rem;
        }
        .contact-value {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.5;
        }

        /* ===== CTA ===== */
        .cta-panel {
            background: var(--bc-bg);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(233, 196, 106, .08), transparent 60%);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            margin-bottom: .75rem;
            color: var(--bc-text);
        }
        .cta-panel p {
            font-size: 1rem;
            color: var(--bc-text-sub);
            max-width: 560px;
            margin: 0 auto 2rem;
        }
        .cta-panel .btn-cta,
        .cta-panel .btn-outline-primary {
            margin: 0 .25rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #142F24;
            color: rgba(255, 255, 255, .65);
            padding: 3rem 0 0;
            font-size: .875rem;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .site-footer ul li {
            margin-bottom: .5rem;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, .55);
            transition: color .2s ease;
        }
        .site-footer ul a:hover {
            color: var(--bc-accent);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: .75rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 1.25rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: .8rem;
            color: rgba(255, 255, 255, .4);
        }

        /* ===== 登录模态框 ===== */
        .login-modal {
            display: flex;
            min-height: 420px;
        }
        .login-brand {
            background: var(--bc-primary);
            flex: 0 0 42%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            color: #fff;
            border-radius: 0;
        }
        .login-brand .brand-icon {
            width: 56px;
            height: 56px;
            background: rgba(255, 255, 255, .12);
            margin-bottom: 1rem;
        }
        .login-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: .25rem;
        }
        .login-brand p {
            color: rgba(255, 255, 255, .65);
            font-size: .875rem;
        }
        .login-form {
            flex: 1;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .login-form h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--bc-text);
        }
        .login-form label {
            font-size: .875rem;
            color: var(--bc-text-sub);
            margin-bottom: 8px;
            display: block;
        }
        .login-form .form-control {
            border-radius: var(--bc-radius-sm);
            border: 1px solid var(--bc-border);
            padding: .6rem .9rem;
            margin-bottom: 1rem;
            transition: all .2s ease;
        }
        .login-form .form-control:focus {
            border-color: var(--bc-primary);
            box-shadow: 0 0 0 2px rgba(27, 67, 50, .15);
        }
        .login-form .btn {
            margin-top: .5rem;
        }
        .forgot-link {
            font-size: .85rem;
            color: var(--bc-text-sub);
            text-align: center;
            display: block;
            margin-top: 1rem;
        }
        .forgot-link:hover {
            color: var(--bc-primary);
        }
        .modal-content {
            border: none;
            border-radius: var(--bc-radius);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .step-line {
                left: 55%;
                width: 90%;
            }
        }
        @media (max-width: 991.98px) {
            .site-header {
                height: 56px;
            }
            .site-header .navbar {
                min-height: 56px;
            }
            .navbar-collapse {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--bc-primary);
                padding: 1rem 1.5rem 1.5rem;
                box-shadow: 0 12px 32px rgba(0, 0, 0, .18);
                border-radius: 0 0 16px 16px;
                z-index: 1040;
            }
            .site-header .navbar-nav .nav-link {
                padding: .6rem .5rem;
                border-radius: 8px;
            }
            .site-header .navbar-nav .nav-link.active::after {
                left: .5rem;
                right: .5rem;
                bottom: 4px;
            }
            .category-banner {
                padding: 2.5rem 0 2rem;
            }
            .category-banner .banner-img-wrap {
                margin-top: 1.5rem;
            }
            .category-banner .banner-img-wrap img {
                max-height: 180px;
            }
            .contact-inner {
                padding: 1.5rem;
            }
            .step-line {
                display: none;
            }
            .step-item {
                margin-bottom: 1rem;
            }
            .login-brand {
                display: none;
            }
            .login-form {
                padding: 1.5rem;
            }
        }
        @media (max-width: 575.98px) {
            .quick-card {
                padding: 1.25rem;
            }
            .contact-inner {
                padding: 1.25rem;
                border-radius: 18px;
            }
            .contact-item {
                padding: 1.25rem 1rem;
            }
            .category-banner h1 {
                font-size: 1.75rem;
            }
            .header-cta {
                padding: .4rem .9rem;
                font-size: .82rem;
            }
            .cta-panel .btn-cta,
            .cta-panel .btn-outline-primary {
                width: 100%;
                max-width: 280px;
                margin: .35rem auto;
                display: block;
            }
        }