/* roulang page: index */
:root {
            --primary: #2E6F95;
            --primary-dark: #1F5473;
            --primary-light: #5B93B5;
            --accent: #4DE3EA;
            --accent-light: #7BF0F5;
            --success: #3D9A6A;
            --nav-bg: #0E2230;
            --footer-bg: #0A1A25;
            --body-bg: #F5F8FB;
            --card-bg: #FFFFFF;
            --hero-bg: #EEF4F9;
            --title-color: #102A3A;
            --text-color: #33475B;
            --weak-text: #5B7186;
            --muted-text: #98A9B8;
            --border-soft: rgba(46, 111, 149, .10);
            --border-line: rgba(46, 111, 149, .14);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-panel: 16px;
            --shadow-xs: 0 2px 8px rgba(16, 42, 58, .05);
            --shadow-card: 0 4px 20px rgba(16, 42, 58, .06);
            --shadow-hover: 0 16px 40px rgba(16, 42, 58, .12);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            background: var(--body-bg);
            color: var(--text-color);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        h1, h2, h3, h4, h5, h6 {
            color: var(--title-color);
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 .5em;
        }

        p {
            margin: 0 0 1.2em;
        }

        .container {
            max-width: 1200px;
        }

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

        .section-block {
            padding: clamp(56px, 8vw, 92px) 0;
        }

        .section-head {
            margin-bottom: 40px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .04em;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-eyebrow::before {
            content: "";
            width: 18px;
            height: 2px;
            background: var(--primary);
            margin-right: 10px;
            border-radius: 99px;
        }

        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            margin: 0 0 12px;
            letter-spacing: .02em;
        }

        .section-sub {
            color: var(--weak-text);
            font-size: 15px;
            max-width: 640px;
            line-height: 1.8;
        }

        .announce-bar {
            background: #06141E;
            color: rgba(255, 255, 255, .7);
            font-size: 13px;
            text-align: center;
            padding: 8px 16px;
            border-bottom: 1px solid rgba(77, 227, 234, .16);
        }

        .announce-bar strong {
            color: var(--accent);
            font-weight: 600;
            margin-right: 6px;
        }

        .site-nav {
            background: var(--nav-bg);
        }

        .navbar {
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .site-nav .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 0;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: .02em;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: var(--nav-bg);
            border-radius: 10px;
            font-size: 18px;
        }

        .brand-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--nav-bg);
            background: var(--accent);
            padding: 2px 8px;
            border-radius: 99px;
            letter-spacing: .06em;
            line-height: 1.5;
        }

        .site-nav .navbar-nav {
            gap: 2px;
        }

        .site-nav .nav-link {
            position: relative;
            color: rgba(255, 255, 255, .76);
            font-size: 15px;
            font-weight: 500;
            padding: 25px 16px !important;
            transition: color .2s ease;
            white-space: nowrap;
        }

        .site-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            border-radius: 99px 99px 0 0;
            background: transparent;
            transform: scaleX(.4);
            opacity: 0;
            transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .site-nav .nav-link:hover,
        .site-nav .nav-link.active {
            color: #fff;
        }

        .site-nav .nav-link:hover::after,
        .site-nav .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--accent);
            box-shadow: 0 0 12px rgba(77, 227, 234, .45);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 0 24px;
            margin-left: 12px;
            background: var(--accent);
            color: var(--nav-bg);
            font-weight: 700;
            font-size: 14px;
            border-radius: 10px;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            border: none;
            line-height: 1;
        }

        .nav-cta:hover {
            background: var(--accent-light);
            color: var(--nav-bg);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(77, 227, 234, .25);
        }

        .navbar-toggler {
            border: none;
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .8);
            font-size: 20px;
        }

        .navbar-toggler:hover,
        .navbar-toggler:focus {
            color: var(--accent);
            box-shadow: none;
        }

        .hero-section {
            background: var(--hero-bg);
            padding: clamp(64px, 8vw, 104px) 0 120px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            opacity: .06;
            z-index: 0;
        }

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

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            letter-spacing: .04em;
        }

        .hero-eyebrow::before {
            content: "🏒";
            font-size: 18px;
        }

        .hero-title {
            font-size: clamp(28px, 4.2vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--title-color);
            margin-bottom: 20px;
            letter-spacing: .01em;
            max-width: 14em;
        }

        .hero-subtitle {
            font-size: clamp(16px, 1.4vw, 18px);
            line-height: 1.9;
            color: var(--text-color);
            max-width: 560px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-bottom: 34px;
        }

        .btn-main,
        .btn-ghost,
        .nav-cta,
        .btn-news {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: none;
            transition: background .22s ease, color .22s ease, border-color .22s ease, transform .22s ease, box-shadow .22s ease;
            font-family: var(--font-stack);
            text-decoration: none;
            cursor: pointer;
            line-height: 1;
        }

        .btn-main {
            min-height: 48px;
            padding: 0 28px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
        }

        .btn-main:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31, 84, 115, .18);
        }

        .btn-ghost {
            min-height: 48px;
            padding: 0 28px;
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            font-size: 15px;
        }

        .btn-ghost:hover {
            background: rgba(46, 111, 149, .08);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .hero-points {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
        }

        .hero-points li {
            font-size: 14px;
            color: var(--weak-text);
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-points li i {
            color: var(--success);
            font-size: 15px;
        }

        .hero-visual {
            position: relative;
            min-height: 380px;
        }

        .hero-collage-back {
            position: absolute;
            top: 20px;
            right: 10px;
            width: 74%;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transform: rotate(2deg);
            border: 6px solid #fff;
            z-index: 1;
        }

        .hero-collage-front {
            position: absolute;
            left: 0;
            bottom: 0;
            width: 72%;
            background: #fff;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 6px solid #fff;
            z-index: 2;
        }

        .hero-collage-front img {
            width: 100%;
            aspect-ratio: 10 / 8;
            object-fit: cover;
            display: block;
        }

        .hero-collage-back img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            display: block;
        }

        .hero-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 14px 16px;
            background: #fff;
        }

        .hero-card-meta .badge-custom {
            background: rgba(46, 111, 149, .1);
            color: var(--primary);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 99px;
            font-weight: 600;
            white-space: nowrap;
        }

        .hero-card-meta span {
            font-size: 13px;
            color: var(--weak-text);
            line-height: 1.5;
        }

        .shortcut-section {
            margin-top: -64px;
            position: relative;
            z-index: 5;
            padding-bottom: 10px;
        }

        .shortcut-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 18px;
            box-shadow: var(--shadow-card);
            padding: 30px 34px;
        }

        .shortcut-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .shortcut-icon {
            width: 48px;
            height: 48px;
            flex: 0 0 48px;
            border-radius: 14px;
            background: rgba(46, 111, 149, .09);
            color: var(--primary);
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .shortcut-content h3 {
            font-size: 16px;
            margin-bottom: 4px;
            font-weight: 700;
        }

        .shortcut-content p {
            font-size: 13px;
            color: var(--weak-text);
            line-height: 1.6;
            margin: 0;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 111, 149, .3);
        }

        .feature-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #E9F0F6;
        }

        .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

        .feature-card:hover .feature-card-img img {
            transform: scale(1.04);
        }

        .feature-card-img .tag-badge {
            position: absolute;
            left: 16px;
            top: 16px;
            background: #fff;
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 99px;
            box-shadow: 0 4px 12px rgba(16, 42, 58, .08);
        }

        .feature-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .feature-card-body h3 {
            font-size: 19px;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .feature-card-body p {
            color: var(--weak-text);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .feature-card-meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--muted-text);
            border-top: 1px solid var(--border-soft);
            padding-top: 14px;
        }

        .feature-card-meta .cat-name {
            color: var(--primary);
            font-weight: 600;
        }

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

        .card-link:hover .feature-card-body h3 {
            color: var(--primary);
            transition: color .2s ease;
        }

        .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap .2s ease, color .2s ease;
        }

        .arrow-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        .guide-section {
            background: #fff;
        }

        .guide-panel {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 20px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .guide-panel img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .guide-content {
            padding: clamp(28px, 4vw, 48px);
        }

        .guide-content .section-title {
            font-size: clamp(22px, 2.6vw, 30px);
        }

        .guide-content p {
            color: var(--text-color);
            font-size: 15px;
            line-height: 1.9;
        }

        .guide-list {
            list-style: none;
            padding: 0;
            margin: 18px 0 26px;
        }

        .guide-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            padding: 8px 0;
            color: var(--title-color);
            line-height: 1.6;
        }

        .guide-list li i {
            color: var(--success);
            margin-top: 4px;
            font-size: 15px;
        }

        .workflow-wrap {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 22px;
            box-shadow: var(--shadow-card);
            padding: clamp(32px, 5vw, 56px);
        }

        .workflow-icon {
            width: 54px;
            height: 54px;
            border-radius: 18px;
            background: rgba(46, 111, 149, .1);
            color: var(--primary);
            font-size: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .workflow-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--muted-text);
            letter-spacing: .06em;
            margin-bottom: 6px;
            display: block;
        }

        .workflow-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .workflow-card p {
            font-size: 14px;
            color: var(--weak-text);
            line-height: 1.7;
            margin: 0;
        }

        .latest-section {
            background: var(--body-bg);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: block;
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 16px;
            padding: 24px 28px;
            box-shadow: var(--shadow-xs);
            transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
        }

        .news-item:hover {
            transform: translateY(-2px);
            border-color: rgba(46, 111, 149, .3);
            box-shadow: var(--shadow-card);
        }

        .news-item-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 9px;
        }

        .news-tag {
            background: rgba(46, 111, 149, .09);
            color: var(--primary);
            padding: 3px 10px;
            border-radius: 99px;
            font-size: 12px;
            font-weight: 700;
        }

        .news-date {
            font-size: 13px;
            color: var(--muted-text);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-feature-settings: "tnum";
        }

        .news-item h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--title-color);
            line-height: 1.55;
            transition: color .2s ease;
        }

        .news-item:hover h3 {
            color: var(--primary);
        }

        .news-item p {
            font-size: 14px;
            color: var(--weak-text);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.75;
        }

        .news-go {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-top: 12px;
            opacity: 0;
            transform: translateX(-6px);
            transition: opacity .2s ease, transform .2s ease, gap .2s ease;
        }

        .news-item:hover .news-go {
            opacity: 1;
            transform: translateX(0);
            gap: 8px;
        }

        .empty-state {
            border: 1.5px dashed #B8CAD9;
            background: #FAFCFE;
            border-radius: 14px;
            min-height: 220px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 36px 20px;
            color: var(--muted-text);
        }

        .empty-icon {
            font-size: 44px;
            margin-bottom: 14px;
            color: #AFC3D4;
        }

        .empty-state h3 {
            font-size: 16px;
            color: var(--weak-text);
            margin-bottom: 4px;
        }

        .empty-state p {
            font-size: 14px;
            color: var(--muted-text);
            margin: 0;
        }

        .faq-panel {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: #fff;
            border: 1px solid var(--border-soft) !important;
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
        }

        .accordion-button {
            background: #fff;
            color: var(--title-color);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            font-family: var(--font-stack);
            border: none;
            box-shadow: none;
            letter-spacing: .01em;
        }

        .accordion-button:not(.collapsed) {
            background: #fff;
            color: var(--primary);
            box-shadow: inset 3px 0 0 var(--primary);
        }

        .accordion-button::after {
            background-image: none;
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            width: auto;
            height: auto;
            transform: rotate(0deg);
            color: var(--primary);
            transition: transform .25s ease;
            font-size: 14px;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            background-image: none;
        }

        .accordion-body {
            padding: 4px 24px 24px;
            color: var(--weak-text);
            font-size: 14px;
            line-height: 1.85;
            border-top: 1px solid var(--border-soft);
            background: #FCFEFF;
        }

        .cta-subscribe-section {
            padding: 0 0 clamp(56px, 8vw, 92px);
        }

        .cta-box {
            background: var(--primary);
            border-radius: 24px;
            padding: clamp(38px, 6vw, 68px);
            position: relative;
            overflow: hidden;
            color: #fff;
            box-shadow: 0 20px 50px rgba(31, 84, 115, .18);
        }

        .cta-box::before,
        .cta-box::after {
            content: "";
            position: absolute;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(77, 227, 234, .13);
            pointer-events: none;
        }

        .cta-box::before {
            top: -44px;
            right: 12%;
        }

        .cta-box::after {
            left: -40px;
            bottom: -70px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, .08);
        }

        .cta-box h2 {
            color: #fff;
            font-size: clamp(23px, 3vw, 32px);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: rgba(255, 255, 255, .82);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 26px;
            max-width: 560px;
            position: relative;
            z-index: 1;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            max-width: 560px;
        }

        .subscribe-form .form-email {
            flex: 1 1 280px;
            min-height: 48px;
            border: none;
            border-radius: 10px;
            padding: 0 18px;
            font-size: 15px;
            color: var(--title-color);
            background: #fff;
            box-shadow: none;
        }

        .subscribe-form .form-email:focus {
            outline: 3px solid rgba(77, 227, 234, .55);
        }

        .btn-subscribe {
            min-height: 48px;
            padding: 0 30px;
            background: var(--nav-bg);
            color: #fff;
            font-weight: 700;
            border: 2px solid transparent;
            border-radius: 10px;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all .2s ease;
            font-family: var(--font-stack);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            border-color: var(--accent);
            background: #0d283a;
            color: #fff;
            transform: translateY(-1px);
        }

        .subscribe-note {
            margin-top: 14px;
            font-size: 12px;
            color: rgba(255, 255, 255, .66);
            position: relative;
            z-index: 1;
        }

        .subscribe-result {
            display: none;
            margin-top: 12px;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            background: rgba(0, 0, 0, .14);
            padding: 10px 14px;
            border-radius: 8px;
        }

        .subscribe-result.show {
            display: inline-block;
        }

        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 36px;
            font-size: 14px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-icon {
            background: var(--accent);
            color: var(--nav-bg);
            width: 34px;
            height: 34px;
            font-size: 16px;
            border-radius: 9px;
        }

        .footer-desc {
            color: rgba(255, 255, 255, .6);
            line-height: 1.8;
            font-size: 13px;
            max-width: 300px;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .62);
            font-size: 13px;
            transition: color .2s ease;
        }

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

        .footer-note {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 46px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, .45);
            font-size: 12px;
        }

        .footer-note a {
            color: rgba(255, 255, 255, .55);
        }

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

        @media (max-width: 991.98px) {
            .navbar {
                min-height: 64px;
            }
            .navbar-collapse {
                background: var(--nav-bg);
                border-top: 1px solid rgba(255, 255, 255, .06);
                margin-top: 6px;
                padding: 12px 4px 20px;
            }
            .site-nav .navbar-nav {
                gap: 0;
                width: 100%;
            }
            .site-nav .nav-item {
                border-bottom: 1px solid rgba(255, 255, 255, .06);
            }
            .site-nav .nav-link {
                padding: 14px 8px !important;
                display: block;
            }
            .site-nav .nav-link::after {
                display: none;
            }
            .site-nav .nav-link.active,
            .site-nav .nav-link:hover {
                color: var(--accent);
            }
            .nav-cta {
                margin: 18px 0 0;
                width: 100%;
            }
            .hero-visual {
                min-height: 320px;
                margin-top: 30px;
            }
            .hero-title br {
                display: none;
            }
            .guide-panel .guide-content {
                padding: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding: 48px 0;
            }
            .hero-section {
                padding-bottom: 100px;
            }
            .shortcut-card {
                padding: 22px;
            }
            .shortcut-item {
                padding: 8px 0;
            }
            .workflow-card {
                padding: 12px 0;
            }
            .news-item {
                padding: 20px;
            }
            .cta-subscribe-section {
                padding-bottom: 48px;
            }
            .cta-box {
                padding: 34px 22px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .btn-subscribe {
                width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            body {
                font-size: 15px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-main,
            .btn-ghost {
                width: 100%;
            }
            .hero-points {
                gap: 8px 14px;
            }
            .hero-points li {
                font-size: 13px;
            }
            .section-head {
                margin-bottom: 28px;
            }
            .news-item-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .footer-brand,
            .footer-title {
                margin-top: 16px;
            }
            .footer-note {
                flex-direction: column;
            }
        }

        .badge-custom {
            display: inline-block;
            background: rgba(46, 111, 149, .09);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 99px;
        }

        .text-weak {
            color: var(--weak-text);
            font-size: 14px;
        }

/* roulang page: category1 */
:root {
    --primary: #2E6F95;
    --primary-dark: #1F5473;
    --accent: #4DE3EA;
    --success: #3D9A6A;
    --bg: #F5F8FB;
    --dark: #0E2230;
    --footer-bg: #0A1A25;
    --heading: #102A3A;
    --text: #33475B;
    --muted: #5B7186;
    --border: rgba(46,111,149,0.14);
    --border-light: rgba(46,111,149,0.10);
    --radius: 14px;
    --radius-btn: 10px;
    --radius-panel: 16px;
    --shadow-card: 0 4px 20px rgba(16,42,58,0.06);
    --shadow-hover: 0 16px 40px rgba(16,42,58,0.12);
    --base-font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--base-font);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}
p { margin: 0 0 1.15rem; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: var(--base-font); }
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3 {
    margin: 0 0 .5em;
    color: var(--heading);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: .02em;
}
.container { max-width: 1200px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 30px;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 15px;
    transition: all .25s ease;
    line-height: 1;
}
.btn:focus-visible {
    outline: 2px solid rgba(46,111,149,.55);
    outline-offset: 2px;
}
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(46,111,149,.28);
}
.btn-outline-primary {
    background: #fff;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}
.btn-outline-primary:hover {
    background: rgba(46,111,149,.09);
    border-color: var(--primary-dark);
    color: var(--primary-dark);
}

/* 站点导航 */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(14,34,48,.98);
    border-bottom: 1px solid rgba(255,255,255,.06);
    box-shadow: 0 10px 30px rgba(10,26,37,.18);
}
.site-nav .navbar { min-height: 72px; padding: 0; }
.site-nav .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    color: #fff;
    font-size: 22px;
    font-weight: 700;
}
.site-nav .navbar-brand:hover { color: #fff; }
.site-nav .brand-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(77,227,234,.10);
    color: var(--accent);
    font-size: 16px;
    border: 1px solid rgba(77,227,234,.45);
}
.site-nav .brand-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    border: 1px solid rgba(77,227,234,.28);
    background: rgba(255,255,255,.06);
    color: #E7FBFB;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .04em;
}
.site-nav .nav-link {
    position: relative;
    padding: .9rem 1rem;
    margin: 0 2px;
    color: rgba(255,255,255,.78);
    font-weight: 500;
    font-size: 15px;
    white-space: nowrap;
}
.site-nav .nav-link:hover { color: #fff; background: rgba(255,255,255,.04); }
.site-nav .nav-link.active { color: #fff; }
.site-nav .nav-link.active::after {
    content: "";
    position: absolute;
    left: .7rem;
    right: .7rem;
    bottom: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
    box-shadow: 0 0 14px rgba(77,227,234,.4);
}
.site-nav .navbar-toggler {
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 12px;
    color: rgba(255,255,255,.9);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.site-nav .navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(77,227,234,.22);
}
.site-nav .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-btn);
    background: var(--accent);
    color: var(--dark);
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
    transition: all .25s ease;
}
.site-nav .nav-cta:hover {
    background: #8CF2F6;
    color: #0E2230;
    transform: translateY(-1px);
}

@media (max-width: 991.98px) {
    .site-nav .navbar { min-height: 64px; }
    .site-nav .navbar-collapse {
        margin: 8px -4px 4px;
        padding: 8px;
        border-radius: 16px;
        background: rgba(255,255,255,.045);
    }
    .site-nav .nav-link {
        padding: .75rem 14px;
        border-radius: 10px;
        font-size: 16px;
    }
    .site-nav .nav-link::after { display: none; }
    .site-nav .nav-link.active { background: rgba(77,227,234,.10); color: #fff; }
    .site-nav .nav-link.active::after {
        display: block;
        content: "";
        position: absolute;
        left: 14px;
        bottom: 8px;
        right: auto;
        width: 22px;
        height: 2px;
        background: var(--accent);
    }
    .site-nav .nav-cta { width: 100%; margin: 10px 0 12px; }
}

/* 栏目 Hero */
.category-hero {
    background: #ecf2f8;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    padding: clamp(3rem, 6vw, 4.8rem) 0;
}
.category-hero .eyebrow {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: .06em;
    margin-bottom: 14px;
}
.category-hero .eyebrow i { color: var(--primary); font-size: 16px; }
.category-hero h1 {
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: .03em;
}
.hero-lead {
    max-width: 660px;
    font-size: clamp(15px, 1.5vw, 17px);
    color: #3A5064;
    margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-photo { position: relative; z-index: 1; margin-top: 8px; }
.hero-photo::before {
    content: "";
    position: absolute;
    right: -16px;
    bottom: -16px;
    width: 100%;
    height: 100%;
    border: 1px solid rgba(46,111,149,.24);
    border-radius: 20px;
    z-index: -1;
    pointer-events: none;
}
.hero-photo img {
    width: 100%;
    min-height: 250px;
    object-fit: cover;
    border-radius: 18px;
    box-shadow: 0 18px 48px rgba(16,42,58,.14);
    background: #fff;
}

/* 通用板块 */
.section { padding: clamp(3.5rem, 8vw, 5.8rem) 0; }
.section-alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 900px; margin-bottom: 2.8rem; }
.section-head .eyebrow {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .08em;
    margin-bottom: 14px;
}
.section-head .eyebrow::before {
    content: "";
    width: 26px;
    height: 2px;
    background: var(--primary);
}
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 12px; }
.section-head p { font-size: 16px; color: var(--muted); margin: 0; }

/* 核心玩法卡片 */
.feature-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 30px;
    height: 100%;
    box-shadow: var(--shadow-card);
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(46,111,149,.24);
    box-shadow: var(--shadow-hover);
}
.feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: rgba(46,111,149,.10);
    color: var(--primary);
    font-size: 22px;
    margin-bottom: 18px;
}
.feature-card h3 { font-size: 20px; margin-bottom: 8px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 15px; }

/* 流程列表 */
.flow-wrap { max-width: 920px; margin: 0 auto; }
.flow-item {
    display: flex;
    gap: 24px;
    padding: 28px 0;
    border-bottom: 1px solid rgba(46,111,149,.12);
}
.flow-item:last-child { border-bottom: none; }
.flow-number {
    flex: 0 0 54px;
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    box-shadow: 0 10px 22px rgba(46,111,149,.24);
    font-feature-settings: "tnum";
}
.flow-body h3 { font-size: 18px; margin-bottom: 6px; }
.flow-body p { margin: 0; color: var(--muted); max-width: 760px; }

/* 需求场景卡片 */
.scenario-card {
    display: flex;
    gap: 18px;
    background: #fff;
    padding: 26px;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    height: 100%;
    box-shadow: var(--shadow-card);
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.scenario-card:hover {
    transform: translateY(-3px);
    border-color: rgba(46,111,149,.22);
    box-shadow: var(--shadow-hover);
}
.scenario-icon {
    flex: 0 0 46px;
    width: 46px;
    height: 46px;
    margin-top: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(46,111,149,.09);
    color: var(--primary);
    font-size: 20px;
}
.scenario-card h3 { font-size: 17px; margin-bottom: 6px; }
.scenario-card p { margin: 0; color: var(--muted); font-size: 15px; }

/* FAQ */
.faq-accordion .accordion-item {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius) !important;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(16,42,58,.04);
}
.faq-accordion .accordion-item + .accordion-item { margin-top: 14px; }
.faq-accordion .accordion-header { margin: 0; }
.faq-accordion .accordion-button {
    padding: 22px 24px;
    font-size: 17px;
    font-weight: 600;
    color: var(--heading);
    background: #fff;
    border: none;
    box-shadow: none;
    position: relative;
}
.faq-accordion .accordion-button::after {
    font-family: "Font Awesome 6 Free";
    content: "\f067";
    font-weight: 900;
    color: var(--primary);
    background: none;
    width: auto;
    height: auto;
    font-size: 16px;
    transition: transform .25s ease;
    transform: rotate(0deg);
}
.faq-accordion .accordion-button:not(.collapsed) {
    background: #f1f7fa;
    color: var(--primary-dark);
}
.faq-accordion .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
.faq-accordion .accordion-button:focus { box-shadow: none; }
.faq-accordion .accordion-body {
    padding: 0 24px 24px;
    color: var(--text-body);
    font-size: 15px;
}

/* CTA 区域 */
.cta-panel {
    position: relative;
    background: var(--primary);
    border-radius: 22px;
    padding: clamp(34px, 5vw, 54px);
    color: #fff;
    overflow: hidden;
}
.cta-panel::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 4px;
    width: 130px;
    background: var(--accent);
}
.cta-panel h2 { color: #fff; margin-bottom: 10px; font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
.cta-panel p { color: rgba(255,255,255,.78); margin: 0; font-size: 16px; }
.cta-panel .btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 52px;
    padding: 0 30px;
    border-radius: var(--radius-btn);
    background: #fff;
    color: var(--primary-dark);
    border: 1px solid transparent;
    font-weight: 600;
    transition: all .25s ease;
}
.cta-panel .btn-cta:hover {
    background: #e6f1f7;
    color: var(--primary-dark);
    transform: translateY(-1px);
}

/* 页脚 */
.site-footer {
    background: var(--footer-bg);
    color: rgba(255,255,255,.60);
    font-size: 14px;
    padding-top: 56px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 14px;
}
.footer-brand .brand-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(77,227,234,.10);
    color: var(--accent);
    font-size: 16px;
    border: 1px solid rgba(77,227,234,.4);
}
.footer-brand .brand-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    border: 1px solid rgba(77,227,234,.28);
    background: rgba(255,255,255,.06);
    color: #E7FBFB;
    font-size: 11px;
    font-weight: 600;
}
.footer-desc {
    color: rgba(255,255,255,.52);
    font-size: 14px;
    max-width: 360px;
    margin-bottom: 0;
}
.footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
}
.site-footer .footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}
.site-footer .footer-links li + li { margin-top: 8px; }
.site-footer .footer-links a {
    color: rgba(255,255,255,.58);
    font-size: 14px;
}
.site-footer .footer-links a:hover { color: var(--accent); }
.footer-note {
    margin-top: 34px;
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    color: rgba(255,255,255,.40);
    font-size: 12px;
}

/* 响应式细节 */
@media (max-width: 991.98px) {
    .category-hero h1 { letter-spacing: .02em; }
    .flow-wrap { padding: 0 10px; }
    .cta-panel { text-align: left; }
}
@media (max-width: 767.98px) {
    .section-head { margin-bottom: 2rem; }
    .hero-photo { margin-top: 20px; }
    .hero-photo::before { display: none; }
    .hero-actions .btn { width: 100%; }
    .flow-item { flex-direction: column; gap: 14px; padding: 22px 0; }
    .flow-number { width: 46px; height: 46px; font-size: 15px; }
    .footer-note { flex-direction: column; gap: 8px; }
    .btn { height: 46px; padding: 0 24px; }
}
@media (max-width: 575.98px) {
    .container { padding-left: 20px; padding-right: 20px; }
    .site-nav .navbar-brand { font-size: 20px; gap: 8px; }
    .site-nav .navbar-brand .brand-badge { display: none; }
    .feature-card, .scenario-card { padding: 22px; }
    .faq-accordion .accordion-button { padding: 18px 16px; font-size: 16px; }
    .faq-accordion .accordion-body { padding: 0 16px 18px; }
}

/* roulang page: article */
:root {
            --primary: #2E6F95;
            --primary-dark: #1F5473;
            --primary-rgb: 46, 111, 149;
            --success: #3D9A6A;
            --accent: #4DE3EA;
            --accent-light: #7BF0F5;
            --navy: #0E2230;
            --navy-dark: #0A1A25;
            --bg: #F5F8FB;
            --bg-soft: #EEF4F9;
            --title: #102A3A;
            --text: #33475B;
            --subtext: #5B7186;
            --disabled: #98A9B8;
            --border: rgba(46, 111, 149, 0.14);
            --border-solid: #DCE7EF;
            --shadow-xs: 0 2px 8px rgba(16, 42, 58, 0.05);
            --shadow-card: 0 4px 20px rgba(16, 42, 58, 0.06);
            --shadow-hover: 0 16px 40px rgba(16, 42, 58, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-panel: 16px;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        img {
            max-width: 100%;
        }

        .container {
            --bs-gutter-x: 1.25rem;
        }

        @media (min-width: 1200px) {
            .container {
                max-width: 1200px;
            }
        }

        .site-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
            font-family: var(--font);
        }

        .site-btn:focus,
        .site-btn:focus-visible {
            outline: 2px solid rgba(77, 227, 234, 0.7);
            outline-offset: 2px;
        }

        .site-btn--primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .site-btn--primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(46, 111, 149, 0.18);
        }

        .site-btn--outline {
            background: #fff;
            border-color: var(--primary);
            color: var(--primary);
        }

        .site-btn--outline:hover {
            background: rgba(46, 111, 149, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .site-btn--light {
            background: #fff;
            border-color: #fff;
            color: var(--primary-dark);
        }

        .site-btn--light:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--navy);
            transform: translateY(-1px);
        }

        .site-btn--dark {
            background: var(--navy);
            border-color: var(--navy);
            color: #fff;
        }

        .site-btn--dark:hover {
            background: #16303F;
            border-color: #16303F;
            color: #fff;
            box-shadow: inset 0 0 0 2px rgba(77, 227, 234, 0.35);
        }

        /* ===== 导航 ===== */
        .site-nav {
            background: var(--navy);
            position: sticky;
            top: 0;
            z-index: 1040;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .site-nav .navbar {
            min-height: 72px;
            padding: 8px 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: #fff;
            font-size: 19px;
            font-weight: 700;
            letter-spacing: 0.02em;
            text-decoration: none;
            padding: 0;
            margin: 0;
        }

        .navbar-brand:hover {
            color: #fff;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(77, 227, 234, 0.12);
            border: 1px solid rgba(77, 227, 234, 0.22);
            color: var(--accent);
            font-size: 17px;
        }

        .brand-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            background: rgba(77, 227, 234, 0.14);
            border-radius: 999px;
            padding: 4px 9px;
            line-height: 1.2;
            letter-spacing: 0.04em;
        }

        .navbar-nav {
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            padding: 20px 14px !important;
            position: relative;
            border-radius: 0;
            letter-spacing: 0.01em;
            transition: color .2s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
        }

        .navbar-nav .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            border-radius: 3px;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(77, 227, 234, 0.55);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 42px;
            padding: 0 20px;
            background: var(--accent);
            color: var(--navy);
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: background .2s ease, transform .2s ease, color .2s ease;
        }

        .nav-cta:hover {
            background: var(--accent-light);
            color: var(--navy);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            width: 44px;
            height: 44px;
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            padding: 0;
        }

        .navbar-toggler:focus,
        .navbar-toggler:focus-visible {
            box-shadow: 0 0 0 4px rgba(77, 227, 234, 0.2);
            outline: none;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--subtext);
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid rgba(46, 111, 149, 0.08);
            border-radius: 999px;
            padding: 8px 18px;
            width: fit-content;
            max-width: 100%;
            margin-bottom: 34px;
        }

        .breadcrumb-custom a {
            color: var(--primary);
        }

        .breadcrumb-custom a:hover {
            text-decoration: underline;
            text-underline-offset: 3px;
            color: var(--primary-dark);
        }

        .breadcrumb-custom .sep {
            color: #B0C2D2;
            font-size: 12px;
        }

        .breadcrumb-custom .current {
            color: var(--title);
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 300px;
        }

        /* ===== 文章头部 ===== */
        .article-hero {
            position: relative;
            padding: 44px 0 128px;
            overflow: hidden;
            background-color: var(--bg-soft);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(46, 111, 149, 0.06);
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(238, 244, 249, 0.93);
        }

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

        .article-head {
            max-width: 940px;
        }

        .article-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(46, 111, 149, 0.10);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }

        .article-head h1 {
            font-size: clamp(28px, 4vw, 40px);
            line-height: 1.3;
            font-weight: 700;
            color: var(--title);
            letter-spacing: 0.02em;
            margin: 0 0 18px 0;
            padding-bottom: 0;
            border-left: 0;
        }

        .article-meta-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            color: var(--subtext);
            font-size: 14px;
        }

        .article-meta-line i {
            color: var(--primary);
            margin-right: 4px;
            opacity: 0.8;
        }

        .article-meta-line .meta-dot {
            color: #C2D1DD;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            position: relative;
            z-index: 2;
            margin-top: -72px;
            padding-bottom: 20px;
        }

        .article-paper {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-panel);
            box-shadow: 0 12px 40px rgba(16, 42, 58, 0.10);
            padding: clamp(28px, 5vw, 54px);
        }

        .article-content {
            max-width: 860px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
        }

        .article-content a {
            color: var(--primary-dark);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-thickness: 1px;
        }

        .article-content a:hover {
            color: var(--primary);
            text-decoration-thickness: 2px;
        }

        .article-content p,
        .article-content div {
            margin-bottom: 1.45em;
        }

        .article-content p:last-child {
            margin-bottom: 0;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--title);
            font-weight: 700;
            line-height: 1.45;
            letter-spacing: 0.02em;
            border-left: 3px solid var(--primary);
            padding-left: 14px;
            margin: 2em 0 0.8em;
        }

        .article-content h2 {
            font-size: 1.45em;
        }

        .article-content h3 {
            font-size: 1.22em;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5em 1em;
            padding-left: 0.6em;
        }

        .article-content li {
            margin-bottom: 0.5em;
        }

        .article-content img {
            border-radius: 14px;
            max-width: 100%;
            height: auto;
            display: block;
            margin: 1.8em auto;
            box-shadow: var(--shadow-card);
        }

        .article-content figure {
            margin: 1.8em 0;
            text-align: center;
        }

        .article-content figcaption {
            font-size: 13px;
            color: var(--subtext);
            margin-top: 10px;
            line-height: 1.6;
        }

        .article-content blockquote {
            border-left: 3px solid var(--success);
            background: rgba(61, 154, 106, 0.06);
            padding: 14px 20px;
            margin: 1.6em 0;
            color: var(--subtext);
            border-radius: 0 10px 10px 0;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 15px;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content th {
            background: rgba(46, 111, 149, 0.06);
            color: var(--title);
            font-weight: 600;
        }

        .article-tail {
            max-width: 860px;
            margin: 36px auto 0;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            background: rgba(46, 111, 149, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            border-radius: 999px;
            padding: 5px 13px;
            line-height: 1.4;
        }

        .tail-note {
            font-size: 13px;
            color: var(--subtext);
        }

        /* ===== 区块标题 ===== */
        .section-head {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-end;
            justify-content: space-between;
            gap: 14px;
            margin-bottom: 32px;
        }

        .section-head .section-eyebrow {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.08em;
            margin-bottom: 6px;
        }

        .section-head h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: var(--title);
            line-height: 1.3;
            letter-spacing: 0.02em;
            margin: 0;
            border-left: 0;
        }

        .section-head p {
            color: var(--subtext);
            font-size: 15px;
            margin: 8px 0 0;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding: 8px 0;
        }

        .section-more:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ===== 延伸阅读 ===== */
        .related-section {
            background: var(--bg);
            padding: clamp(56px, 8vw, 88px) 0 40px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .related-card:hover {
            transform: translateY(-5px);
            border-color: rgba(46, 111, 149, 0.3);
            box-shadow: var(--shadow-hover);
        }

        .related-card img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
        }

        .related-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 22px 24px 26px;
        }

        .related-body .cat-tag {
            display: inline-flex;
            align-self: flex-start;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(46, 111, 149, 0.09);
            border-radius: 999px;
            padding: 5px 12px;
            margin-bottom: 14px;
        }

        .related-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--title);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .related-body p {
            font-size: 14.5px;
            line-height: 1.7;
            color: var(--subtext);
            margin-bottom: 0;
        }

        .related-body .related-link {
            margin-top: auto;
            padding-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        /* ===== 页脚前 CTA ===== */
        .cta-section {
            background: var(--bg);
            padding: 48px 0 clamp(56px, 8vw, 88px);
        }

        .cta-panel {
            background: var(--primary);
            border-radius: 20px;
            padding: clamp(30px, 4.5vw, 56px);
            overflow: hidden;
            position: relative;
            color: #fff;
            box-shadow: 0 16px 40px rgba(46, 111, 149, 0.18);
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            border: 1.5px solid rgba(77, 227, 234, 0.25);
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            right: -10px;
            top: -10px;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            border: 1px solid rgba(77, 227, 234, 0.2);
        }

        .cta-panel h2 {
            color: #fff;
            font-size: clamp(22px, 2.6vw, 30px);
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 10px;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            margin: 0;
            line-height: 1.7;
        }

        .cta-panel .cta-right {
            display: flex;
            justify-content: flex-end;
        }

        /* ===== 空态 ===== */
        .notfound-section {
            padding: clamp(80px, 10vw, 120px) 0;
        }

        .notfound-box {
            max-width: 600px;
            margin: 0 auto;
            background: #fff;
            border: 1.5px dashed #B8CAD9;
            border-radius: 18px;
            padding: clamp(40px, 6vw, 64px) 32px;
            text-align: center;
            box-shadow: var(--shadow-xs);
        }

        .notfound-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 18px;
            border-radius: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #E9F0F6;
            color: var(--subtext);
            font-size: 28px;
        }

        .notfound-box h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--title);
            margin-bottom: 10px;
            border-left: 0;
            padding-left: 0;
        }

        .notfound-box p {
            color: var(--subtext);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 26px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--navy-dark);
            color: rgba(255, 255, 255, 0.68);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .site-footer .brand-icon {
            background: rgba(77, 227, 234, 0.1);
            border-color: rgba(77, 227, 234, 0.18);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
            margin-bottom: 18px;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

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

        .footer-links li {
            margin-bottom: 6px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.58);
            font-size: 14px;
            display: inline-block;
            padding: 3px 0;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
            text-decoration: none;
        }

        .footer-note {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px 28px;
            margin-top: 44px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.42);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .site-nav .navbar {
                min-height: 64px;
            }

            .navbar-collapse {
                background: var(--navy);
                border-radius: 0 0 14px 14px;
                padding: 12px 0 18px;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 24px 40px rgba(0, 0, 0, 0.3);
                margin-top: 8px;
            }

            .navbar-nav {
                padding: 6px 18px;
                gap: 0;
            }

            .navbar-nav .nav-link {
                padding: 13px 8px !important;
                color: rgba(255, 255, 255, 0.78);
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .navbar-nav .nav-link.active {
                background: rgba(77, 227, 234, 0.05);
                border-left: 2px solid var(--accent);
                color: #fff;
                padding-left: 12px !important;
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .nav-cta {
                margin: 14px 18px 2px;
                width: calc(100% - 36px);
                justify-content: center;
            }
        }

        @media (max-width: 767.98px) {
            .article-hero {
                padding: 32px 0 90px;
            }

            .breadcrumb-custom {
                margin-bottom: 24px;
                padding: 7px 14px;
            }

            .article-head h1 {
                font-size: 26px;
            }

            .article-meta-line {
                gap: 8px;
                font-size: 13px;
            }

            .article-main {
                margin-top: -36px;
            }

            .article-paper {
                padding: 24px 18px;
                border-radius: 14px;
            }

            .article-content {
                font-size: 16px;
                line-height: 1.85;
            }

            .article-tail {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .tail-note {
                font-size: 12px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-right {
                justify-content: flex-start !important;
                margin-top: 16px;
            }

            .cta-panel .site-btn {
                width: 100%;
                justify-content: center;
            }

            .footer-note {
                flex-direction: column;
                gap: 6px;
            }

            .notfound-box {
                padding: 36px 20px;
            }
        }

        @media (min-width: 992px) {
            .navbar-expand-lg .navbar-nav .nav-link {
                padding-right: 14px;
                padding-left: 14px;
                line-height: 1.4;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E6F95;
            --primary-dark: #1F5473;
            --primary-deep: #163F57;
            --accent: #4DE3EA;
            --success: #3D9A6A;
            --bg: #F5F8FB;
            --surface: #FFFFFF;
            --hero-bg: #EEF4F9;
            --nav-bg: #0E2230;
            --footer-bg: #0A1A25;
            --heading: #102A3A;
            --text: #33475B;
            --muted: #5B7186;
            --faint: #98A9B8;
            --border: rgba(46, 111, 149, 0.14);
            --border-strong: rgba(46, 111, 149, 0.30);
            --radius-card: 14px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 24px rgba(16, 42, 58, 0.05);
            --shadow-hover: 0 16px 40px rgba(16, 42, 58, 0.12);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-cn);
            color: var(--heading);
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 16px;
            letter-spacing: 0.02em;
        }

        p {
            margin: 0 0 1em;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

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

        button {
            font-family: var(--font-cn);
        }

        .container {
            max-width: 1200px;
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ========== Header / Navigation ========== */
        .site-nav {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--nav-bg);
            box-shadow: 0 8px 24px rgba(10, 26, 37, 0.18);
        }

        .site-nav .navbar {
            background: transparent;
            min-height: 72px;
            padding-top: .625rem;
            padding-bottom: .625rem;
        }

        .site-nav .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.02em;
            margin-right: 0;
            padding: 0;
        }

        .site-nav .navbar-brand:hover,
        .site-nav .navbar-brand:focus {
            color: #FFFFFF;
            text-decoration: none;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 11px;
            background: rgba(77, 227, 234, 0.12);
            border: 1px solid rgba(77, 227, 234, 0.35);
            color: var(--accent);
            font-size: 17px;
            flex: 0 0 auto;
        }

        .brand-badge {
            display: inline-block;
            font-size: 11px;
            line-height: 1;
            padding: 5px 8px;
            border-radius: 999px;
            border: 1px solid rgba(77, 227, 234, 0.55);
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.08em;
        }

        .site-nav .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 10px;
            color: #FFFFFF;
            padding: 7px 12px;
            background: transparent;
            min-width: 44px;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .site-nav .navbar-toggler:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .site-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(77, 227, 234, 0.25);
            outline: none;
        }

        .site-nav .navbar-nav {
            gap: 2px;
        }

        .site-nav .nav-link {
            position: relative;
            display: inline-block;
            padding: 0.8rem 1rem;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.76);
            border-radius: 10px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0;
            height: 2px;
            border-radius: 999px;
            background: var(--accent);
            opacity: 0;
            box-shadow: 0 0 10px rgba(77, 227, 234, 0.45);
            transition: opacity .25s ease;
        }

        .site-nav .nav-link:hover {
            color: #FFFFFF;
            text-decoration: none;
        }

        .site-nav .nav-link:hover::after {
            opacity: 0.35;
        }

        .site-nav .nav-link.active {
            color: #FFFFFF;
        }

        .site-nav .nav-link.active::after {
            opacity: 1;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--nav-bg);
            border-radius: var(--radius-btn);
            padding: 0.65rem 1.1rem;
            font-size: 15px;
            font-weight: 600;
            min-height: 44px;
            white-space: nowrap;
            border: 1.5px solid transparent;
            transition: background .25s ease, color .25s ease, transform .2s ease;
        }

        .nav-cta:hover {
            background: #7BF0F5;
            color: var(--nav-bg);
            text-decoration: none;
            transform: translateY(-1px);
        }

        .nav-cta i {
            font-size: 15px;
        }

        /* ========== Hero ========== */
        .cat-hero {
            position: relative;
            background-color: var(--hero-bg);
            background-image: linear-gradient(105deg, rgba(238, 244, 249, 0.98) 0%, rgba(238, 244, 249, 0.94) 48%, rgba(245, 248, 251, 0.78) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: clamp(64px, 8vw, 96px) 0 72px;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .cat-hero .eyebrow {
            margin-bottom: 18px;
        }

        .cat-hero h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            letter-spacing: 0.04em;
            color: var(--heading);
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
            max-width: 45em;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-stage {
            position: relative;
        }

        .hero-stage-img {
            width: 100%;
            border-radius: 16px;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            border: 6px solid rgba(255, 255, 255, 0.85);
            box-shadow: 0 18px 40px rgba(16, 42, 58, 0.12);
            background: #DFEAF2;
        }

        .hero-float {
            position: absolute;
            right: -6px;
            bottom: -18px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 14px 30px rgba(16, 42, 58, 0.12);
            font-size: 14px;
            color: var(--heading);
            font-weight: 600;
        }

        .hero-float i {
            color: var(--primary);
            font-size: 18px;
        }

        /* ========== Section ========== */
        .section {
            padding: clamp(56px, 8vw, 88px) 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-head {
            margin-bottom: 42px;
        }

        .section-head h2 {
            font-size: clamp(24px, 3vw, 32px);
            margin-bottom: 14px;
            color: var(--heading);
        }

        .section-head .section-lead {
            font-size: 16px;
            color: var(--muted);
            max-width: 52em;
            margin-bottom: 0;
        }

        .section-head.text-center .section-lead {
            margin-left: auto;
            margin-right: auto;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .eyebrow::before {
            content: "";
            width: 22px;
            height: 2px;
            border-radius: 999px;
            background: var(--primary);
            opacity: .65;
        }

        /* ========== Buttons ========== */
        .btn {
            --bs-btn-focus-box-shadow: none;
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 0.7rem 1.45rem;
            min-height: 46px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-width: 1.5px;
            letter-spacing: 0.02em;
            transition: background-color .25s ease, border-color .25s ease, color .25s ease, box-shadow .25s ease, transform .2s ease;
        }

        .btn-brand {
            background: var(--primary);
            border-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-brand:hover,
        .btn-brand:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(46, 111, 149, 0.22);
        }

        .btn-brand-outline {
            background: var(--surface);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .btn-brand-outline:hover,
        .btn-brand-outline:focus {
            background: rgba(46, 111, 149, 0.08);
            border-color: var(--primary-dark);
            color: var(--primary-deep);
            text-decoration: none;
            transform: translateY(-1px);
        }

        .btn-inverse {
            background: var(--nav-bg);
            border-color: var(--nav-bg);
            color: #FFFFFF;
        }

        .btn-inverse:hover,
        .btn-inverse:focus {
            background: #163A50;
            border-color: #163A50;
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .btn-white-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.8);
            color: #FFFFFF;
        }

        .btn-white-outline:hover,
        .btn-white-outline:focus {
            background: rgba(255, 255, 255, 0.1);
            border-color: #FFFFFF;
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ========== Info Cards ========== */
        .theme-card {
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .theme-card:hover {
            border-color: var(--border-strong);
            box-shadow: 0 14px 32px rgba(16, 42, 58, 0.08);
        }

        .icon-bubble {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(46, 111, 149, 0.09);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .theme-card h3 {
            font-size: 19px;
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .theme-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .info-note {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            border: 1px dashed rgba(46, 111, 149, 0.30);
            background: rgba(46, 111, 149, 0.04);
            border-radius: 14px;
            padding: 16px 18px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 28px;
        }

        .info-note i {
            color: var(--primary);
            font-size: 17px;
            margin-top: 3px;
        }

        .info-note span {
            flex: 1;
        }

        /* ========== Split Media ========== */
        .split-image {
            position: relative;
            background: #FFFFFF;
            padding: 8px;
            border: 1px solid var(--border);
            border-radius: 18px;
            box-shadow: 0 18px 40px rgba(16, 42, 58, 0.08);
        }

        .split-image img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 12px;
            background: #DFEAF2;
        }

        .split-copy p {
            color: var(--text);
            font-size: 16px;
            line-height: 1.9;
        }

        .check-list {
            margin: 22px 0 26px;
        }

        .check-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            margin-bottom: 12px;
            color: var(--heading);
            font-weight: 500;
            font-size: 15px;
            line-height: 1.7;
        }

        .check-list li i {
            color: var(--success);
            font-size: 16px;
            margin-top: 4px;
            flex: 0 0 auto;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary-dark);
            font-size: 15px;
            border-bottom: 1px solid transparent;
            transition: border-color .2s ease, color .2s ease;
        }

        .text-link:hover {
            text-decoration: none;
            border-color: var(--primary);
            color: var(--primary-deep);
        }

        .text-link i {
            font-size: 14px;
        }

        /* ========== Scenario ========== */
        .scenario-card {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .scenario-card:hover {
            border-color: var(--border-strong);
            box-shadow: 0 14px 30px rgba(16, 42, 58, 0.08);
        }

        .scenario-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(46, 111, 149, 0.09);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex: 0 0 auto;
        }

        .scenario-card h3 {
            font-size: 18px;
            margin-bottom: 6px;
        }

        .scenario-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== Process ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .process-item {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .process-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(46, 111, 149, 0.10);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            margin-bottom: 16px;
        }

        .process-num {
            position: absolute;
            right: 18px;
            top: 18px;
            font-size: 14px;
            font-weight: 800;
            color: rgba(46, 111, 149, 0.24);
            letter-spacing: .04em;
            font-feature-settings: "tnum";
        }

        .process-item h3 {
            font-size: 17px;
            margin-bottom: 8px;
            padding-right: 32px;
        }

        .process-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ========== Relation ========== */
        .relation-card {
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px;
            color: var(--heading);
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .relation-card:hover,
        .relation-card:focus-visible {
            text-decoration: none;
            color: var(--heading);
            border-color: var(--border-strong);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .relation-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(46, 111, 149, 0.08);
            border-radius: 999px;
            padding: 5px 12px;
            margin-bottom: 16px;
        }

        .relation-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .relation-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 22px;
            flex: 1;
        }

        .relation-arrow {
            font-weight: 600;
            color: var(--primary-dark);
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .relation-arrow i {
            font-size: 13px;
            transition: transform .2s ease;
        }

        .relation-card:hover .relation-arrow i {
            transform: translateX(4px);
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .accordion-button {
            font-family: var(--font-cn);
            background: var(--surface);
            color: var(--heading);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.6;
            padding: 20px 24px;
            box-shadow: none;
            border-left: 3px solid transparent;
        }

        .accordion-button:not(.collapsed) {
            background: #F2F8FC;
            color: var(--primary-dark);
            border-left-color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(46, 111, 149, 0.16);
            outline: none;
        }

        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f107";
            color: var(--primary);
            width: 18px;
            height: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-left: auto;
            transition: transform .25s ease;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--primary-dark);
        }

        .accordion-body {
            padding: 6px 24px 22px 27px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid rgba(46, 111, 149, 0.08);
        }

        /* ========== CTA ========== */
        .cta-box {
            background: var(--primary);
            border-radius: 18px;
            padding: clamp(34px, 5vw, 52px);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .cta-box h2 {
            color: #FFFFFF;
            font-size: clamp(22px, 3vw, 30px);
            margin-bottom: 10px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 16px;
            margin-bottom: 0;
            max-width: 46em;
        }

        .cta-box .cta-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            justify-content: flex-start;
            margin-top: 24px;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            right: -120px;
            top: -180px;
            background: rgba(77, 227, 234, 0.14);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            width: 200px;
            height: 200px;
            right: 80px;
            bottom: -120px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box .container-fluid,
        .cta-box .row {
            position: relative;
            z-index: 1;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            padding-top: 56px;
            padding-bottom: 26px;
            line-height: 1.8;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
        }

        .footer-title {
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 13px;
            line-height: 1.6;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-note {
            display: flex;
            flex-direction: row;
            justify-content: space-between;
            gap: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 22px;
            color: rgba(255, 255, 255, 0.42);
            font-size: 12px;
            line-height: 1.7;
        }

        .footer-note span:first-child {
            color: rgba(255, 255, 255, 0.58);
            white-space: nowrap;
        }

        /* ========== Responsive ========== */
        @media (max-width: 991.98px) {
            .site-nav .navbar {
                min-height: 64px;
            }

            .site-nav .navbar-collapse {
                background: var(--nav-bg);
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 12px;
                padding: 10px 0 16px;
            }

            .site-nav .navbar-nav {
                gap: 0;
                padding-bottom: 4px;
            }

            .site-nav .nav-link {
                display: block;
                width: 100%;
                padding: 13px 10px;
                color: rgba(255, 255, 255, 0.8);
                font-size: 15px;
            }

            .site-nav .nav-link::after {
                left: 0;
                right: auto;
                top: 0;
                bottom: 0;
                width: 3px;
                height: auto;
                box-shadow: 0 0 10px rgba(77, 227, 234, 0.3);
            }

            .site-nav .nav-link:hover::after {
                opacity: .4;
            }

            .nav-cta {
                margin-top: 10px;
                justify-content: center;
                width: 100%;
            }

            .cat-hero {
                padding: 54px 0 58px;
            }

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

            .section-head {
                margin-bottom: 32px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }

            .cat-hero {
                padding: 44px 0 48px;
            }

            .hero-actions .btn {
                width: auto;
                min-width: 0;
            }

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

            .hero-stage {
                margin-top: 24px;
            }

            .site-footer {
                padding-top: 44px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-float {
                right: 8px;
                bottom: -12px;
                padding: 10px 14px;
                font-size: 13px;
            }

            .footer-note {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .process-item {
                padding: 22px 18px;
            }

            .relation-card {
                padding: 24px 20px;
            }

            .accordion-button {
                padding: 17px 16px;
                font-size: 15px;
            }

            .accordion-body {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category3 */
:root{
    --bs-primary: #2E6F95;
    --bs-secondary: #3D9A6A;
    --color-primary:#2E6F95;
    --color-primary-dark:#1F5473;
    --color-primary-soft:rgba(46,111,149,.08);
    --color-secondary:#3D9A6A;
    --color-accent:#4DE3EA;
    --color-bg:#F5F8FB;
    --color-bg-hero:#EEF4F9;
    --color-card:#FFFFFF;
    --color-dark:#0E2230;
    --color-footer:#0A1A25;
    --color-text-head:#102A3A;
    --color-text-body:#33475B;
    --color-muted:#5B7186;
    --color-fade:#98A9B8;
    --border-soft:rgba(46,111,149,.1);
    --border-line:rgba(46,111,149,.14);
    --shadow-xs:0 2px 8px rgba(16,42,58,.05);
    --shadow-card:0 8px 24px rgba(16,42,58,.05);
    --shadow-hover:0 16px 40px rgba(16,42,58,.12);
    --radius-card:14px;
    --radius-panel:16px;
    --radius-btn:10px;
    --ease:all .25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    background:var(--color-bg);
    color:var(--color-text-body);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{color:var(--color-text-head);line-height:1.3;letter-spacing:.02em;margin:0 0 .5rem}
p{margin:0 0 1rem;line-height:1.8}
a{color:var(--color-primary);text-decoration:none;transition:var(--ease)}
a:hover{color:var(--color-primary-dark)}
img{max-width:100%;height:auto}
button,input,textarea{font-family:inherit}
.container{max-width:1200px}
.row{gap:0}
::selection{background:rgba(46,111,149,.18);color:var(--color-dark)}

.btn{border-radius:var(--radius-btn);border:1.5px solid transparent;padding:11px 26px;font-weight:600;font-size:15px;transition:var(--ease)}
.btn-primary{--bs-btn-bg:var(--color-primary);--bs-btn-border-color:var(--color-primary);--bs-btn-hover-bg:var(--color-primary-dark);--bs-btn-hover-border-color:var(--color-primary-dark);--bs-btn-active-bg:var(--color-primary-dark);background:var(--color-primary);border-color:var(--color-primary);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--color-primary-dark);border-color:var(--color-primary-dark);color:#fff;transform:translateY(-1px)}
.btn-outline-primary{--bs-btn-color:var(--color-primary);--bs-btn-border-color:var(--color-primary);--bs-btn-hover-bg:rgba(46,111,149,.1);--bs-btn-hover-color:var(--color-primary-dark);--bs-btn-hover-border-color:var(--color-primary-dark);--bs-btn-active-bg:rgba(46,111,149,.15);background:transparent;color:var(--color-primary);border:1.5px solid var(--color-primary)}
.btn-outline-primary:hover{background:rgba(46,111,149,.1);color:var(--color-primary-dark)}
.btn-lg{padding:14px 32px;font-size:16px}
.btn:focus-visible,.form-control:focus-visible,.form-check-input:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;box-shadow:none}

.site-nav{
    position:sticky;
    top:0;
    z-index:1090;
    background:var(--color-dark);
    background-image:radial-gradient(circle at 15% -50%,rgba(77,227,234,.16) 0,rgba(14,34,48,.85) 62%);
    box-shadow:0 4px 24px rgba(10,26,37,.18);
}
.navbar{
    min-height:72px;
    padding:12px 0;
}
.navbar-brand{
    display:flex;
    align-items:center;
    gap:10px;
    padding:0;
    font-size:22px;
    font-weight:700;
    font-family:"PingFang SC","Microsoft YaHei",sans-serif;
    letter-spacing:.02em;
    color:#fff;
}
.navbar-brand:hover,.navbar-brand:focus{color:#fff}
.brand-icon{
    width:38px;
    height:38px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    color:var(--color-accent);
    background:rgba(77,227,234,.12);
    border:1px solid rgba(77,227,234,.38);
    border-radius:50%;
    flex:0 0 auto;
}
.brand-badge{
    font-size:12px;
    font-weight:500;
    color:var(--color-accent);
    background:rgba(77,227,234,.12);
    border:1px solid rgba(77,227,234,.26);
    padding:2px 9px;
    border-radius:999px;
    margin-left:3px;
}
.site-nav .navbar-nav{margin-left:auto;margin-right:auto}
.navbar-nav .nav-link{
    padding:10px 4px;
    margin:0 12px;
    font-size:15px;
    font-weight:500;
    color:rgba(255,255,255,.76);
    position:relative;
    letter-spacing:.03em;
    transition:var(--ease);
}
.navbar-nav .nav-link::after{
    content:"";
    position:absolute;
    left:8px;
    right:8px;
    bottom:0;
    height:2px;
    background:var(--color-accent);
    border-radius:2px;
    transform:scaleX(0);
    transform-origin:center;
    transition:transform .25s ease;
}
.navbar-nav .nav-link:hover,.navbar-nav .nav-link:focus{
    color:#fff;
}
.navbar-nav .nav-link.active{
    color:#fff;
}
.navbar-nav .nav-link.active::after{
    transform:scaleX(1);
    box-shadow:0 0 12px rgba(77,227,234,.45);
}
.site-nav .navbar-toggler{
    border:1px solid rgba(255,255,255,.28);
    padding:8px 14px;
    border-radius:10px;
    outline:none;
    box-shadow:none;
    color:#fff;
    min-height:44px;
}
.site-nav .navbar-toggler i{color:#fff;font-size:18px}
.nav-cta{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:var(--color-accent);
    color:var(--color-dark);
    padding:10px 22px;
    border-radius:var(--radius-btn);
    white-space:nowrap;
    font-size:15px;
    font-weight:700;
    transition:var(--ease);
    margin-left:6px;
}
.nav-cta:hover{
    background:#7BF0F5;
    color:var(--color-dark);
    transform:translateY(-1px);
}

.cat-hero{
    background:linear-gradient(110deg,#EFF5FA 0%,#E8F1F7 68%,#DDEBF3 100%);
    padding:16px 0 74px;
    border-bottom:1px solid rgba(46,111,149,.08);
    position:relative;
    overflow:hidden;
}
.cat-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url("/assets/images/backpic/back-3.webp");
    background-repeat:no-repeat;
    background-position:right 20px center;
    background-size:34%;
    background-blend-mode:soft-light;
    opacity:.22;
    pointer-events:none;
}
.site-breadcrumb{
    padding:18px 0 24px;
    position:relative;
    z-index:2;
}
.site-breadcrumb a,.site-breadcrumb span{
    font-size:13px;
    color:var(--color-muted);
    margin-right:8px;
}
.site-breadcrumb a:hover{color:var(--color-primary)}
.site-breadcrumb span{color:var(--color-text-head)}
.site-breadcrumb i{font-size:10px;color:var(--color-fade);margin-right:8px}

.eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:700;
    color:var(--color-primary);
    text-transform:none;
    letter-spacing:.12em;
    margin-bottom:14px;
}
.eyebrow::before{
    content:"";
    display:inline-block;
    width:18px;
    height:3px;
    border-radius:3px;
    background:var(--color-primary);
}
.cat-hero h1{
    font-size:clamp(28px,3.8vw,42px);
    font-weight:700;
    letter-spacing:.03em;
    color:var(--color-text-head);
    margin-bottom:16px;
    max-width:680px;
}
.cat-hero .lead{
    font-size:16px;
    line-height:1.9;
    color:#33475B;
    max-width:640px;
    margin-bottom:28px;
}
.hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    align-items:center;
}
.hero-mini-list{
    list-style:none;
    padding:0;
    margin:24px 0 0;
    display:flex;
    flex-wrap:wrap;
    gap:8px 28px;
}
.hero-mini-list li{
    font-size:14px;
    color:var(--color-muted);
    display:inline-flex;
    align-items:center;
    gap:7px;
}
.hero-mini-list li i{color:var(--color-secondary);font-size:14px}
.hero-figure-wrap{
    position:relative;
    z-index:2;
}
.hero-figure{
    background:#fff;
    border-radius:var(--radius-panel);
    padding:8px;
    box-shadow:var(--shadow-hover);
    border:1px solid rgba(46,111,149,.08);
    margin:0;
    margin-top:34px;
    position:relative;
    transform:rotate(1.2deg);
    transition:var(--ease);
}
.hero-figure img{
    width:100%;
    border-radius:11px;
    aspect-ratio:4/3;
    object-fit:cover;
}
.hero-figure::after{
    content:"";
    position:absolute;
    width:76%;
    height:76%;
    right:-12px;
    bottom:-14px;
    border:1px solid rgba(46,111,149,.16);
    border-radius:var(--radius-panel);
    z-index:-1;
    background:rgba(255,255,255,.32);
}
.hero-note{
    position:absolute;
    left:-16px;
    bottom:26px;
    background:var(--color-dark);
    color:#fff;
    font-size:13px;
    padding:10px 18px;
    border-radius:999px 999px 999px 6px;
    box-shadow:var(--shadow-card);
    border-left:3px solid var(--color-accent);
    display:flex;
    align-items:center;
    gap:8px;
}
.hero-note i{color:var(--color-accent)}

.quick-stats{
    background:#fff;
    border:1px solid var(--border-soft);
    box-shadow:var(--shadow-card);
    border-radius:18px;
    margin-top:-36px;
    position:relative;
    z-index:3;
    padding:26px 18px 14px;
}
.quick-stat-item{
    text-align:center;
    padding:10px 12px;
    position:relative;
}
.quick-stat-item .num{
    font-size:32px;
    font-weight:700;
    color:var(--color-primary);
    line-height:1.2;
    display:block;
    letter-spacing:-.02em;
    font-feature-settings:"tnum";
}
.quick-stat-item .txt{
    display:block;
    color:var(--color-muted);
    font-size:13px;
    margin-top:4px;
    line-height:1.5;
}
.quick-stat-item:not(:last-child)::after{
    content:"";
    position:absolute;
    right:0;
    top:24%;
    height:52%;
    width:1px;
    background:var(--border-line);
}
.section-block{
    padding:clamp(52px,7vw,84px) 0;
}
.section-block + .section-block{
    border-top:1px solid rgba(46,111,149,.07);
}
.bg-soft{
    background:#EFF5F9;
}
.sec-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    margin-bottom:36px;
    gap:18px;
}
.sec-head h2{
    font-size:clamp(24px,2.8vw,32px);
    font-weight:700;
    margin-bottom:6px;
}
.sec-head .sub{
    color:var(--color-muted);
    font-size:15px;
    margin:0;
}
.sec-head .link-more{
    font-size:14px;
    color:var(--color-primary);
    font-weight:600;
    display:inline-flex;
    align-items:center;
    gap:6px;
    white-space:nowrap;
}
.sec-head .link-more:hover{gap:10px}

.step-card{
    background:#fff;
    border:1px solid var(--border-soft);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-xs);
    padding:26px 24px;
    height:100%;
    position:relative;
    transition:var(--ease);
    overflow:hidden;
}
.step-card:hover{
    transform:translateY(-5px);
    border-color:rgba(46,111,149,.28);
    box-shadow:var(--shadow-hover);
}
.step-num{
    font-size:13px;
    font-weight:700;
    color:#FFF;
    background:var(--color-primary);
    padding:3px 2px;
    width:64px;
    text-align:center;
    border-radius:999px;
    margin-bottom:18px;
    display:inline-block;
    letter-spacing:.12em;
}
.step-card:nth-child(2) .step-num{background:var(--color-secondary)}
.step-card h3{
    font-size:19px;
    font-weight:700;
    margin-bottom:10px;
}
.step-card p{
    font-size:14.5px;
    color:var(--color-muted);
    margin-bottom:0;
}
.step-card .step-ico{
    font-size:12px;
    color:var(--color-primary);
    display:flex;
    width:34px;
    height:34px;
    align-items:center;
    justify-content:center;
    background:var(--color-primary-soft);
    border-radius:10px;
    margin-bottom:14px;
}

.dual-panel{
    background:#fff;
    border-radius:var(--radius-panel);
    border:1px solid var(--border-soft);
    box-shadow:var(--shadow-card);
    padding:30px 30px 14px;
    height:100%;
    transition:var(--ease);
}
.dual-panel:hover{
    box-shadow:var(--shadow-hover);
}
.dual-panel h3{
    font-size:20px;
    padding-bottom:14px;
    border-bottom:1px solid var(--border-line);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:16px;
}
.dual-panel h3 i{
    color:var(--color-primary);
}
.panel-list{
    list-style:none;
    padding:0;
    margin:0;
}
.panel-list li{
    display:flex;
    gap:13px;
    padding:13px 0;
    font-size:14.5px;
    border-bottom:1px dashed rgba(46,111,149,.1);
    line-height:1.75;
    color:var(--color-text-body);
}
.panel-list li:last-child{border-bottom:0}
.panel-list li i{
    color:var(--color-secondary);
    margin-top:4px;
    font-size:14px;
    flex:0 0 auto;
}
.panel-list li b{color:var(--color-text-head);font-weight:600}
.panel-banner{
    margin:18px 0 0;
    background:var(--color-bg-hero);
    border-radius:12px;
    padding:12px 16px;
    font-size:13.5px;
    color:var(--color-muted);
}

.term-card{
    background:#fff;
    border:1px solid var(--border-soft);
    border-radius:var(--radius-card);
    padding:0;
    box-shadow:var(--shadow-xs);
    height:100%;
    overflow:hidden;
    transition:var(--ease);
}
.term-card:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-4px);
}
.term-card .term-head{
    display:flex;
    align-items:center;
    gap:10px;
    padding:16px 20px 10px;
}
.term-card .term-head .term-dot{
    width:32px;
    height:32px;
    border-radius:9px;
    background:var(--color-primary-soft);
    color:var(--color-primary);
    display:flex;
    align-items:center;
    justify-content:center;
}
.term-card .term-head h3{
    font-size:16px;
    margin:0;
    font-weight:700;
}
.term-card p{
    margin:0;
    padding:0 20px 18px;
    font-size:13.5px;
    color:var(--color-muted);
    line-height:1.8;
}
.term-card .weak{
    font-size:12px;
    color:var(--color-fade);
    display:block;
    padding:8px 20px;
    border-top:1px dashed rgba(46,111,149,.12);
    background:#FBFCFD;
}

.tip-list{
    background:#fff;
    border-radius:var(--radius-panel);
    border:1px solid var(--border-soft);
    box-shadow:var(--shadow-card);
    overflow:hidden;
}
.tip-item{
    display:flex;
    gap:16px;
    padding:22px 26px;
    border-bottom:1px solid rgba(46,111,149,.08);
    transition:background .2s ease;
}
.tip-item:last-child{border-bottom:none}
.tip-item:hover{background:#FAFCFE}
.tip-item .tip-index{
    font-size:13px;
    font-weight:700;
    background:var(--color-primary-soft);
    color:var(--color-primary);
    width:32px;
    height:32px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    flex:0 0 auto;
    margin-top:2px;
}
.tip-item:nth-child(2n) .tip-index{background:rgba(61,154,106,.12);color:var(--color-secondary)}
.tip-item .tip-content h3{
    font-size:16px;
    font-weight:700;
    margin-bottom:6px;
}
.tip-item .tip-content p{
    font-size:14px;
    color:var(--color-muted);
    margin:0;
    line-height:1.8;
}

.faq-section{
    background:#EFF5F9;
}
.simple-faq .accordion-item{
    background:#fff;
    border:1px solid var(--border-soft);
    border-radius:var(--radius-card) !important;
    margin-bottom:14px;
    box-shadow:var(--shadow-xs);
    overflow:hidden;
}
.accordion-button{
    border-radius:var(--radius-card) !important;
    background:#fff;
    padding:17px 22px;
    font-size:15.5px;
    font-weight:600;
    color:var(--color-text-head);
    box-shadow:none;
}  
.accordion-button:not(.collapsed){
    background:#FBFEFF;
    color:var(--color-text-head);
    box-shadow:none;
    border-left:3px solid var(--color-primary);
    border-radius:var(--radius-card) var(--radius-card) 0 0 !important;
}
.accordion-button:focus{
    box-shadow:none;
    border:1px solid var(--color-primary);
    outline:none;
}
.accordion-button::after{
    background-image:none;
    content:"+";
    font-family:"PingFang SC",sans-serif;
    font-size:22px;
    font-weight:400;
    color:var(--color-primary);
    width:auto;
    height:auto;
    display:flex;
    align-items:center;
    justify-content:center;
}
.accordion-button:not(.collapsed)::after{
    background-image:none;
    transform:rotate(45deg);
    color:var(--color-primary);
}
.accordion-body{
    padding:6px 24px 20px;
    font-size:14px;
    color:var(--color-muted);
    border-top:1px solid rgba(46,111,149,.08);
    background:#fff;
}
.accordion-body p:last-child{margin:0}

.cta-strip{
    padding:0 0 clamp(56px,7vw,88px);
}
.cta-panel{
    background:linear-gradient(120deg,var(--color-primary) 0%,#3E85AC 100%);
    border-radius:20px;
    padding:44px 40px;
    color:#fff;
    position:relative;
    overflow:hidden;
}
.cta-panel::before{
    content:"";
    position:absolute;
    width:230px;
    height:230px;
    right:-70px;
    top:-90px;
    border:20px solid rgba(255,255,255,.08);
    border-radius:50%;
}
.cta-panel::after{
    content:"";
    position:absolute;
    width:90px;
    height:3px;
    left:38px;
    bottom:26px;
    background:var(--color-accent);
    border-radius:3px;
    box-shadow:0 0 12px rgba(77,227,234,.5);
}
.cta-panel h2{
    color:#fff;
    font-size:clamp(22px,3vw,30px);
    font-weight:700;
    margin-bottom:10px;
    position:relative;
    z-index:1;
}
.cta-panel p{
    color:rgba(255,255,255,.88);
    font-size:15px;
    max-width:680px;
    position:relative;
    z-index:1;
}
.cta-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    position:relative;
    z-index:1;
}
.cta-btn-dark{
    background:var(--color-dark);
    color:#fff;
    border-radius:var(--radius-btn);
    padding:12px 30px;
    font-weight:600;
    transition:var(--ease);
    border:1px solid transparent;
    display:inline-flex;
    align-items:center;
    gap:8px;
}

.cta-btn-dark:hover{
    background:#102B3B;
    border-color:var(--color-accent);
    color:#fff;
}
.cta-btn-white{
    background:rgba(255,255,255,.14);
    color:#fff;
    border:1px solid rgba(255,255,255,.35);
    border-radius:var(--radius-btn);
    padding:11px 28px;
    font-weight:600;
    display:inline-flex;
    align-items:center;
    gap:8px;
}
.cta-btn-white:hover{
    background:rgba(255,255,255,.24);
    color:#fff;
}
.cta-mini-note{
    font-size:12px;
    color:rgba(255,255,255,.65);
    margin-top:14px;
    display:block;
    line-height:1.6;
}

.site-footer{
    background:var(--color-footer);
    padding:58px 0 0;
    color:rgba(255,255,255,.65);
}
.footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:21px;
    font-weight:700;
    color:#fff;
    margin-bottom:12px;
}
.footer-desc{
    font-size:13.5px;
    color:rgba(255,255,255,.52);
    line-height:1.85;
    margin-bottom:14px;
    max-width:300px;
}
.footer-title{
    font-size:14px;
    font-weight:600;
    color:#fff;
    margin-bottom:14px;
    letter-spacing:.05em;
}
.footer-links{
    list-style:none;
    padding:0;
    margin:0;
}
.footer-links li{margin-bottom:8px}
.footer-links a{
    font-size:13px;
    color:rgba(255,255,255,.52);
    transition:var(--ease);
}
.footer-links a:hover{
    color:var(--color-accent);
    padding-left:4px;
}
.footer-note{
    margin-top:38px;
    border-top:1px solid rgba(255,255,255,.08);
    padding:20px 0;
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:6px 18px;
    font-size:12px;
    color:rgba(255,255,255,.4);
}

@media (max-width: 991.98px){
    .navbar{custom-padding:0}
    .navbar-collapse{
        background:var(--color-dark);
        border:1px solid rgba(77,227,234,.2);
        border-radius:0 0 18px 18px;
        padding:20px 14px 26px;
        margin-top:12px;
        box-shadow:0 20px 40px rgba(10,26,37,.28);
    }
    .navbar-nav .nav-link{padding:13px 16px;margin:0;border-radius:10px;font-size:15px}
    .navbar-nav .nav-link::after{display:none}
    .navbar-nav .nav-link.active{
        background:rgba(77,227,234,.08);
        border-left:3px solid var(--color-accent);
        color:#fff;
    }
    .nav-cta{
        margin-top:12px;
        width:100%;
        justify-content:center;
    }
}
@media (max-width: 991px){
    .hero-figure-wrap{margin-top:30px}
    .hero-figure{margin-top:10px}
    .hero-note{left:8px;bottom:14px}
    .quick-stats{margin-top:26px}
    .quick-stat-item:not(:last-child)::after{display:none}
    .dual-panel{margin-top:20px}
    .sec-head{align-items:flex-start}
}
@media (max-width: 767.98px){
    .cat-hero{padding-top:6px}
    .site-breadcrumb{padding-top:12px}
    .quick-stat-item{padding:12px 6px}
    .quick-stat-item .num{font-size:26px}
    .step-card{padding:22px 18px}
    .sec-head .link-more{margin-top:2px}
    .cta-panel{padding:34px 22px}
    .cta-actions .btn{width:100%;justify-content:center}
}
@media (max-width: 575.98px){
    .navbar-brand{font-size:19px}
    .brand-icon{width:34px;height:34px;font-size:15px}
    .cat-hero h1{font-size:27px}
    .cat-hero .lead{font-size:15px}
    .hero-mini-list{flex-direction:column}
    .hero-figure-wrap{padding:0 6px}
    .hero-note{font-size:12px;padding:8px 12px;bottom:10px}
    .quick-stat-item .txt{font-size:12px}
    .quick-stat-item .num{font-size:23px}
    .section-block{padding:56px 0}
    .dual-panel,.term-card{padding:22px 18px}
    .tip-item{padding:18px}
    .accordion-button{padding:15px 16px;font-size:14.5px}
    .footer-note{flex-direction:column}
}