/* roulang page: index */
:root {
            --primary: #1769e0;
            --primary-dark: #0e52ba;
            --primary-soft: #eaf3ff;
            --primary-pale: #f5f9ff;
            --accent: #0f9f83;
            --accent-soft: #e9f8f4;
            --warning: #d97706;
            --warning-soft: #fff7e8;
            --danger: #c43d4f;
            --danger-soft: #fff0f2;
            --ink: #16243a;
            --text: #34445b;
            --muted: #6d7d91;
            --line: #dce5f0;
            --line-strong: #c8d6e7;
            --surface: #ffffff;
            --surface-alt: #f7f9fc;
            --footer: #122138;
            --radius-sm: 9px;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 5px 16px rgba(25, 58, 99, .07);
            --shadow: 0 14px 38px rgba(25, 58, 99, .10);
            --container: 1220px;
            --section-space: 92px;
            --button-height: 46px;
            --transition: 180ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 116px;
        }

        body {
            margin: 0;
            color: var(--text);
            background: var(--surface);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body.menu-open {
            overflow: hidden;
        }

        h1, h2, h3, p, ul, ol, figure {
            margin-top: 0;
        }

        h1, h2, h3 {
            color: var(--ink);
            line-height: 1.22;
            letter-spacing: -.025em;
        }

        h1 {
            margin-bottom: 22px;
            font-size: clamp(2.35rem, 5vw, 4.65rem);
            max-width: 980px;
        }

        h2 {
            margin-bottom: 16px;
            font-size: clamp(1.75rem, 3vw, 2.65rem);
        }

        h3 {
            margin-bottom: 10px;
            font-size: 1.17rem;
        }

        p {
            margin-bottom: 1em;
        }

        ul, ol {
            padding-left: 1.2em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        button, input, select, textarea {
            color: inherit;
            font: inherit;
        }

        button {
            border: 0;
            cursor: pointer;
        }

        button:disabled,
        .button[aria-disabled="true"] {
            cursor: not-allowed;
            opacity: .56;
            transform: none !important;
            box-shadow: none !important;
        }

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

        :focus-visible {
            outline: 3px solid rgba(23, 105, 224, .28);
            outline-offset: 3px;
        }

        ::selection {
            color: #fff;
            background: var(--primary);
        }

        .container {
            width: min(calc(100% - 40px), var(--container));
            margin-inline: auto;
        }

        .section {
            padding: var(--section-space) 0;
        }

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

        .section-blue {
            background: var(--primary-pale);
            border-top: 1px solid #e7eff9;
            border-bottom: 1px solid #e7eff9;
        }

        .eyebrow {
            display: inline-flex;
            gap: 8px;
            align-items: center;
            margin-bottom: 13px;
            color: var(--primary-dark);
            font-size: .86rem;
            font-weight: 750;
            letter-spacing: .04em;
        }

        .eyebrow::before {
            width: 22px;
            height: 3px;
            border-radius: 99px;
            background: var(--primary);
            content: "";
        }

        .section-head {
            display: flex;
            gap: 36px;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 38px;
        }

        .section-head > div:first-child {
            max-width: 730px;
        }

        .section-head p {
            max-width: 690px;
            margin-bottom: 0;
            color: var(--muted);
            font-size: 1.02rem;
        }

        .button {
            min-height: var(--button-height);
            display: inline-flex;
            gap: 9px;
            align-items: center;
            justify-content: center;
            padding: 11px 19px;
            border: 1px solid transparent;
            border-radius: 11px;
            font-weight: 720;
            line-height: 1.2;
            white-space: nowrap;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .button:active {
            transform: translateY(0) scale(.98);
        }

        .button-primary {
            color: #fff;
            border-color: var(--primary);
            background: var(--primary);
            box-shadow: 0 8px 18px rgba(23, 105, 224, .2);
        }

        .button-primary:hover {
            border-color: var(--primary-dark);
            background: var(--primary-dark);
            box-shadow: 0 10px 24px rgba(23, 105, 224, .25);
        }

        .button-secondary {
            color: var(--primary-dark);
            border-color: var(--line-strong);
            background: #fff;
        }

        .button-secondary:hover {
            border-color: var(--primary);
            background: var(--primary-pale);
        }

        .button-text {
            min-height: auto;
            padding: 7px 0;
            color: var(--primary-dark);
        }

        .button-text:hover {
            color: var(--primary);
            transform: translateX(3px);
        }

        .badge {
            display: inline-flex;
            gap: 6px;
            align-items: center;
            padding: 5px 10px;
            border-radius: 999px;
            color: var(--primary-dark);
            background: var(--primary-soft);
            font-size: .78rem;
            font-weight: 730;
            line-height: 1.2;
        }

        .badge.green {
            color: #087560;
            background: var(--accent-soft);
        }

        .badge.orange {
            color: #9a5805;
            background: var(--warning-soft);
        }

        .badge.red {
            color: #9f2e3d;
            background: var(--danger-soft);
        }

        .status-dot {
            width: 8px;
            height: 8px;
            flex: 0 0 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(15, 159, 131, .12);
        }

        .notice-bar {
            position: relative;
            z-index: 101;
            color: #43546a;
            background: #eef5fd;
            border-bottom: 1px solid #dce8f6;
            font-size: .84rem;
        }

        .notice-inner {
            min-height: 40px;
            display: flex;
            gap: 14px;
            align-items: center;
            justify-content: center;
            padding: 7px 40px;
            text-align: center;
        }

        .notice-inner strong {
            color: var(--primary-dark);
        }

        .notice-close {
            position: absolute;
            top: 7px;
            right: max(12px, calc((100vw - var(--container)) / 2));
            width: 28px;
            height: 28px;
            display: grid;
            place-items: center;
            border-radius: 8px;
            color: var(--muted);
            background: transparent;
            font-size: 1.1rem;
        }

        .notice-close:hover {
            color: var(--ink);
            background: rgba(255,255,255,.8);
        }

        .site-header {
            position: sticky;
            z-index: 100;
            top: 0;
            border-bottom: 1px solid rgba(220, 229, 240, .92);
            background: rgba(255, 255, 255, .96);
            box-shadow: 0 5px 18px rgba(27, 51, 82, .045);
        }

        .nav-shell {
            min-height: 76px;
            display: grid;
            grid-template-columns: minmax(240px, 1fr) auto minmax(320px, 1fr);
            gap: 24px;
            align-items: center;
        }

        .brand {
            min-width: 0;
            display: inline-flex;
            gap: 11px;
            align-items: center;
            color: var(--ink);
            font-size: 1rem;
            font-weight: 820;
            line-height: 1.25;
        }

        .brand-mark {
            width: 37px;
            height: 37px;
            flex: 0 0 37px;
            display: grid;
            grid-template-columns: repeat(2, 7px);
            gap: 4px;
            place-content: center;
            border-radius: 11px;
            color: #fff;
            background: var(--primary);
            box-shadow: 0 7px 15px rgba(23, 105, 224, .19);
        }

        .brand-mark i {
            width: 7px;
            height: 7px;
            border-radius: 2px;
            background: currentColor;
        }

        .brand-mark i:last-child {
            background: #8ce3d2;
        }

        .nav-links {
            display: flex;
            gap: 5px;
            align-items: center;
            justify-content: center;
        }

        .nav-links a {
            padding: 9px 13px;
            border-radius: 9px;
            color: #526279;
            font-size: .92rem;
            font-weight: 680;
        }

        .nav-links a:hover {
            color: var(--primary-dark);
            background: var(--primary-pale);
        }

        .nav-links a.active {
            color: var(--primary-dark);
            background: var(--primary-soft);
        }

        .nav-actions {
            display: flex;
            gap: 9px;
            align-items: center;
            justify-content: flex-end;
        }

        .command-search {
            width: 186px;
            height: 40px;
            display: flex;
            gap: 8px;
            align-items: center;
            padding: 0 10px;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #f9fbfd;
            transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
        }

        .command-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(23, 105, 224, .1);
        }

        .command-search svg {
            width: 17px;
            flex: 0 0 17px;
            color: var(--muted);
        }

        .command-search input {
            min-width: 0;
            width: 100%;
            border: 0;
            outline: 0;
            background: transparent;
            font-size: .86rem;
        }

        .command-search kbd {
            padding: 2px 5px;
            border: 1px solid var(--line);
            border-radius: 5px;
            color: var(--muted);
            background: #fff;
            font-family: inherit;
            font-size: .7rem;
        }

        .nav-quick {
            width: 40px;
            height: 40px;
            display: grid;
            place-items: center;
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--muted);
            background: #fff;
        }

        .nav-quick:hover {
            color: var(--primary);
            border-color: #b9d0ed;
            background: var(--primary-pale);
        }

        .menu-toggle {
            width: 42px;
            height: 42px;
            display: none;
            place-items: center;
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--ink);
            background: #fff;
        }

        .menu-toggle span,
        .menu-toggle::before,
        .menu-toggle::after {
            width: 19px;
            height: 2px;
            border-radius: 2px;
            background: currentColor;
            content: "";
            transition: transform var(--transition), opacity var(--transition);
        }

        .menu-toggle {
            gap: 4px;
        }

        .menu-toggle[aria-expanded="true"] span {
            opacity: 0;
        }

        .menu-toggle[aria-expanded="true"]::before {
            transform: translateY(6px) rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"]::after {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-panel {
            display: none;
        }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 74px 0 66px;
            background:
                linear-gradient(180deg, #f4f8fe 0%, #ffffff 76%);
            border-bottom: 1px solid #edf2f8;
        }

        .hero::after {
            position: absolute;
            right: -5%;
            bottom: 32px;
            width: 32%;
            height: 1px;
            background: #cfe0f5;
            content: "";
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 1050px;
        }

        .hero-kicker {
            display: inline-flex;
            gap: 10px;
            align-items: center;
            margin-bottom: 19px;
            padding: 7px 12px;
            border: 1px solid #cee0f4;
            border-radius: 999px;
            color: var(--primary-dark);
            background: rgba(255,255,255,.78);
            font-size: .84rem;
            font-weight: 740;
        }

        .hero-lead {
            max-width: 820px;
            margin-bottom: 28px;
            color: #56677d;
            font-size: clamp(1.04rem, 2vw, 1.2rem);
            line-height: 1.85;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 35px;
        }

        .hero-stage {
            display: grid;
            grid-template-columns: 1.55fr .75fr .75fr;
            gap: 14px;
            align-items: stretch;
        }

        .hero-index,
        .hero-mini {
            border: 1px solid #dce7f4;
            border-radius: var(--radius);
            background: rgba(255,255,255,.92);
            box-shadow: var(--shadow-sm);
        }

        .hero-index {
            min-height: 170px;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 22px;
            align-items: center;
            padding: 24px;
        }

        .hero-index h2 {
            margin-bottom: 8px;
            font-size: 1.22rem;
        }

        .hero-index p {
            max-width: 480px;
            margin: 0;
            color: var(--muted);
            font-size: .92rem;
        }

        .region-pills {
            display: grid;
            grid-template-columns: repeat(2, 70px);
            gap: 9px;
        }

        .region-pills span {
            min-height: 48px;
            display: grid;
            place-items: center;
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--primary-dark);
            background: var(--primary-pale);
            font-size: .87rem;
            font-weight: 730;
        }

        .hero-mini {
            min-height: 170px;
            padding: 22px;
        }

        .hero-mini .mini-label {
            display: flex;
            gap: 8px;
            align-items: center;
            margin-bottom: 16px;
            color: var(--muted);
            font-size: .8rem;
            font-weight: 680;
        }

        .hero-mini strong {
            display: block;
            margin-bottom: 7px;
            color: var(--ink);
            font-size: 1.5rem;
        }

        .hero-mini p {
            margin: 0;
            color: var(--muted);
            font-size: .83rem;
            line-height: 1.6;
        }

        .countdown {
            display: flex;
            gap: 6px;
            margin: 12px 0;
        }

        .countdown span {
            min-width: 36px;
            padding: 7px 5px;
            border-radius: 8px;
            color: var(--primary-dark);
            background: var(--primary-soft);
            text-align: center;
            font-size: .84rem;
            font-weight: 800;
        }

        .trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            margin-top: 25px;
            color: #65768b;
            font-size: .84rem;
        }

        .trust-strip span {
            display: inline-flex;
            gap: 8px;
            align-items: center;
        }

        .trust-strip span::before {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
            content: "";
        }

        .pain-layout {
            display: grid;
            grid-template-columns: 4fr 8fr;
            gap: 55px;
            align-items: start;
        }

        .pain-intro {
            position: sticky;
            top: 112px;
        }

        .pain-intro p {
            color: var(--muted);
        }

        .service-index {
            display: grid;
            gap: 12px;
        }

        .service-row {
            display: grid;
            grid-template-columns: 56px 1fr auto;
            gap: 18px;
            align-items: center;
            padding: 20px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: 0 5px 14px rgba(31, 66, 109, .045);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .service-row:hover {
            border-color: #b9d2ef;
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .service-number {
            width: 48px;
            height: 48px;
            display: grid;
            place-items: center;
            border-radius: 12px;
            color: var(--primary-dark);
            background: var(--primary-soft);
            font-weight: 820;
        }

        .service-row p {
            margin: 0;
            color: var(--muted);
            font-size: .9rem;
        }

        .row-action {
            color: var(--primary-dark);
            font-size: .86rem;
            font-weight: 740;
        }

        .row-action:hover {
            color: var(--primary);
        }

        .metrics-band {
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.35fr repeat(4, 1fr);
            border: 1px solid #d9e7f7;
            border-radius: var(--radius-lg);
            background: #edf5ff;
        }

        .metric-intro,
        .metric {
            min-height: 174px;
            padding: 28px;
        }

        .metric-intro {
            display: flex;
            flex-direction: column;
            justify-content: center;
            color: #fff;
            background: var(--primary);
        }

        .metric-intro h2 {
            margin-bottom: 8px;
            color: #fff;
            font-size: 1.55rem;
        }

        .metric-intro p {
            margin: 0;
            color: #dceaff;
            font-size: .9rem;
        }

        .metric {
            display: flex;
            flex-direction: column;
            justify-content: center;
            border-left: 1px solid #d8e5f5;
        }

        .metric strong {
            margin-bottom: 6px;
            color: var(--ink);
            font-size: 2rem;
            line-height: 1;
        }

        .metric small {
            color: var(--muted);
            font-size: .82rem;
        }

        .metric-trend {
            display: inline-flex;
            gap: 5px;
            align-items: center;
            margin-top: 12px;
            color: #087962;
            font-size: .75rem;
            font-weight: 720;
        }

        .case-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            grid-template-rows: repeat(2, minmax(210px, auto));
            gap: 18px;
        }

        .case-card {
            position: relative;
            overflow: hidden;
            min-height: 210px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 26px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .case-card.featured {
            grid-row: 1 / span 2;
            min-height: 438px;
            padding: 34px;
            color: #fff;
            border-color: #1d68c7;
            background:
                linear-gradient(145deg, #125cbe, #2485e7);
        }

        .case-card.featured::before {
            position: absolute;
            top: 30px;
            right: 30px;
            width: 145px;
            height: 145px;
            border: 1px solid rgba(255,255,255,.2);
            border-radius: 28px;
            content: "";
            transform: rotate(9deg);
        }

        .case-card.featured h3 {
            max-width: 530px;
            color: #fff;
            font-size: 2rem;
        }

        .case-card.featured p {
            max-width: 570px;
            color: #dceaff;
        }

        .case-card h3 {
            margin-top: 15px;
        }

        .case-card p {
            margin-bottom: 14px;
            color: var(--muted);
            font-size: .92rem;
        }

        .case-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            font-size: .8rem;
        }

        .case-card.featured .case-meta {
            color: #dbeaff;
        }

        .case-card:not(.featured):hover {
            border-color: #b6d1ef;
            box-shadow: var(--shadow);
        }

        .poster-track {
            display: flex;
            gap: 15px;
            overflow-x: auto;
            padding: 4px 2px 20px;
            scroll-snap-type: x mandatory;
            scrollbar-color: #b8cbe2 #edf2f7;
            scrollbar-width: thin;
        }

        .poster-card {
            min-width: 216px;
            max-width: 216px;
            overflow: hidden;
            scroll-snap-align: start;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .poster-cover {
            aspect-ratio: 4 / 3;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 18px;
            color: #fff;
            background: #2c70c4;
        }

        .poster-card:nth-child(2) .poster-cover { background: #147f78; }
        .poster-card:nth-child(3) .poster-cover { background: #5965ad; }
        .poster-card:nth-child(4) .poster-cover { background: #b26b26; }
        .poster-card:nth-child(5) .poster-cover { background: #55758f; }

        .poster-cover strong {
            max-width: 150px;
            font-size: 1.18rem;
            line-height: 1.35;
        }

        .poster-content {
            padding: 16px;
        }

        .poster-content h3 {
            display: -webkit-box;
            overflow: hidden;
            margin-bottom: 7px;
            font-size: 1rem;
            -webkit-box-orient: vertical;
            -webkit-line-clamp: 2;
        }

        .poster-content p {
            display: -webkit-box;
            overflow: hidden;
            margin: 0 0 10px;
            color: var(--muted);
            font-size: .82rem;
            -webkit-box-orient: vertical;
            -webkit-line-clamp: 2;
        }

        .poster-card:hover {
            border-color: #b4ceec;
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .solutions {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 64px;
            align-items: start;
        }

        .solution-copy {
            position: sticky;
            top: 112px;
        }

        .solution-copy > p {
            color: var(--muted);
        }

        .solution-list {
            position: relative;
            display: grid;
            gap: 0;
        }

        .solution-list::before {
            position: absolute;
            top: 32px;
            bottom: 32px;
            left: 24px;
            width: 2px;
            background: #d7e5f5;
            content: "";
        }

        .solution-item {
            position: relative;
            display: grid;
            grid-template-columns: 50px 1fr;
            gap: 18px;
            padding: 0 0 36px;
        }

        .solution-item:last-child {
            padding-bottom: 0;
        }

        .step-mark {
            position: relative;
            z-index: 1;
            width: 50px;
            height: 50px;
            display: grid;
            place-items: center;
            border: 6px solid var(--surface-alt);
            border-radius: 50%;
            color: #fff;
            background: var(--primary);
            font-weight: 820;
        }

        .step-body {
            padding: 20px 22px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .step-body p {
            margin-bottom: 12px;
            color: var(--muted);
            font-size: .92rem;
        }

        .step-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
        }

        .news-layout {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 34px;
            align-items: stretch;
        }

        .news-list {
            border-top: 1px solid var(--line);
        }

        .news-item {
            display: grid;
            grid-template-columns: 96px 1fr auto;
            gap: 20px;
            align-items: center;
            padding: 19px 4px;
            border-bottom: 1px solid var(--line);
        }

        .news-date {
            color: var(--muted);
            font-size: .82rem;
        }

        .news-item h3 {
            margin: 0 0 5px;
            font-size: 1rem;
        }

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

        .news-item p {
            margin: 0;
            color: var(--muted);
            font-size: .85rem;
        }

        .news-type {
            color: var(--primary-dark);
            font-size: .8rem;
            font-weight: 720;
        }

        .ranking-panel {
            padding: 25px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: var(--primary-pale);
        }

        .ranking-panel h3 {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
        }

        .ranking-panel h3 small {
            color: var(--muted);
            font-size: .72rem;
            font-weight: 500;
        }

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

        .rank-item {
            display: grid;
            grid-template-columns: 30px 1fr auto;
            gap: 11px;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid #dae6f4;
        }

        .rank-item:last-child {
            border-bottom: 0;
        }

        .rank-no {
            width: 25px;
            height: 25px;
            display: grid;
            place-items: center;
            border-radius: 7px;
            color: var(--primary-dark);
            background: #fff;
            font-size: .76rem;
            font-weight: 800;
        }

        .rank-item:first-child .rank-no {
            color: #fff;
            background: var(--primary);
        }

        .rank-name {
            color: var(--ink);
            font-size: .88rem;
            font-weight: 690;
        }

        .trend-up {
            color: var(--accent);
            font-size: .75rem;
            font-weight: 720;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 4fr 8fr;
            gap: 60px;
            align-items: start;
        }

        .faq-side p {
            color: var(--muted);
        }

        .faq-list {
            border-top: 1px solid var(--line);
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-question {
            width: 100%;
            min-height: 72px;
            display: flex;
            gap: 20px;
            align-items: center;
            justify-content: space-between;
            padding: 18px 4px;
            color: var(--ink);
            background: transparent;
            text-align: left;
            font-weight: 740;
        }

        .faq-question:hover {
            color: var(--primary-dark);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            flex: 0 0 28px;
            display: grid;
            place-items: center;
            border-radius: 50%;
            color: var(--primary-dark);
            background: var(--primary-soft);
            transition: transform var(--transition);
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            max-width: 760px;
            padding: 0 52px 22px 4px;
            color: var(--muted);
            font-size: .93rem;
        }

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

        .contact-section {
            padding: 88px 0 104px;
            background: #edf5ff;
            border-top: 1px solid #dce9f7;
        }

        .contact-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 70px;
            align-items: start;
        }

        .contact-copy p {
            max-width: 510px;
            color: var(--muted);
        }

        .contact-options {
            display: grid;
            gap: 11px;
            margin-top: 28px;
        }

        .contact-option {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: #465972;
            font-size: .9rem;
        }

        .contact-option i {
            width: 24px;
            height: 24px;
            flex: 0 0 24px;
            display: grid;
            place-items: center;
            border-radius: 7px;
            color: var(--primary-dark);
            background: #fff;
            font-style: normal;
            font-size: .76rem;
            font-weight: 800;
        }

        .feedback-form {
            padding: 30px;
            border: 1px solid #d5e4f5;
            border-radius: var(--radius-lg);
            background: #fff;
            box-shadow: var(--shadow);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .field {
            display: grid;
            gap: 7px;
        }

        .field.full {
            grid-column: 1 / -1;
        }

        .field label {
            color: var(--ink);
            font-size: .86rem;
            font-weight: 720;
        }

        .field input,
        .field select,
        .field textarea {
            width: 100%;
            border: 1px solid var(--line-strong);
            border-radius: 10px;
            outline: 0;
            background: #fbfcfe;
            transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
        }

        .field input,
        .field select {
            height: 46px;
            padding: 0 13px;
        }

        .field textarea {
            min-height: 126px;
            resize: vertical;
            padding: 12px 13px;
        }

        .field input:hover,
        .field select:hover,
        .field textarea:hover {
            border-color: #9fbadc;
        }

        .field input:focus,
        .field select:focus,
        .field textarea:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(23, 105, 224, .1);
        }

        .field input.invalid,
        .field textarea.invalid {
            border-color: var(--danger);
            background: var(--danger-soft);
        }

        .check-field {
            grid-column: 1 / -1;
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: var(--muted);
            font-size: .82rem;
        }

        .check-field input {
            width: 17px;
            height: 17px;
            flex: 0 0 17px;
            margin-top: 4px;
            accent-color: var(--primary);
        }

        .form-actions {
            grid-column: 1 / -1;
            display: flex;
            gap: 14px;
            align-items: center;
            justify-content: space-between;
            margin-top: 2px;
        }

        .form-note {
            color: var(--muted);
            font-size: .78rem;
        }

        .form-status {
            display: none;
            grid-column: 1 / -1;
            padding: 10px 13px;
            border-radius: 9px;
            color: #087560;
            background: var(--accent-soft);
            font-size: .85rem;
        }

        .form-status.show {
            display: block;
        }

        .site-footer {
            padding: 56px 0 24px;
            color: #c4cfdd;
            background: var(--footer);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 58px;
            padding-bottom: 38px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
            color: #fff;
        }

        .footer-brand p {
            max-width: 500px;
            margin: 0;
            color: #95a7bc;
            font-size: .88rem;
        }

        .footer-column h2 {
            margin-bottom: 14px;
            color: #fff;
            font-size: .92rem;
            letter-spacing: 0;
        }

        .footer-links {
            display: grid;
            gap: 9px;
        }

        .footer-links a {
            color: #9fb0c3;
            font-size: .86rem;
        }

        .footer-links a:hover {
            color: #fff;
            transform: translateX(2px);
        }

        .footer-compliance {
            margin-top: 16px;
            padding: 13px 15px;
            border: 1px solid rgba(255,255,255,.1);
            border-radius: 10px;
            color: #9fb0c3;
            background: rgba(255,255,255,.035);
            font-size: .8rem;
        }

        .footer-bottom {
            display: flex;
            gap: 20px;
            align-items: center;
            justify-content: space-between;
            padding-top: 22px;
            border-top: 1px solid rgba(255,255,255,.1);
            color: #8498ae;
            font-size: .78rem;
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

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

        .floating-cta {
            position: fixed;
            z-index: 80;
            right: 22px;
            bottom: 22px;
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 11px 12px 11px 17px;
            border: 1px solid #cdddf0;
            border-radius: 14px;
            background: rgba(255,255,255,.96);
            box-shadow: 0 16px 38px rgba(26, 59, 100, .18);
            backdrop-filter: blur(8px);
        }

        .floating-cta p {
            margin: 0;
            color: var(--ink);
            font-size: .82rem;
            font-weight: 700;
        }

        .floating-cta small {
            display: block;
            color: var(--muted);
            font-weight: 500;
        }

        .floating-close {
            width: 28px;
            height: 28px;
            display: grid;
            place-items: center;
            border-radius: 8px;
            color: var(--muted);
            background: var(--surface-alt);
        }

        .floating-close:hover {
            color: var(--ink);
            background: var(--primary-soft);
        }

        .search-dialog {
            position: fixed;
            z-index: 200;
            inset: 0;
            display: none;
            place-items: start center;
            padding: 14vh 20px 20px;
            background: rgba(16, 32, 53, .48);
        }

        .search-dialog.open {
            display: grid;
        }

        .search-modal {
            width: min(100%, 640px);
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: 16px;
            background: #fff;
            box-shadow: 0 24px 70px rgba(12, 33, 58, .25);
        }

        .search-modal form {
            display: flex;
            gap: 10px;
            padding: 14px;
            border-bottom: 1px solid var(--line);
        }

        .search-modal input {
            min-width: 0;
            flex: 1;
            height: 46px;
            padding: 0 14px;
            border: 1px solid var(--line-strong);
            border-radius: 10px;
            outline: 0;
        }

        .search-modal input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(23, 105, 224, .1);
        }

        .search-suggestions {
            padding: 17px;
        }

        .search-suggestions p {
            margin-bottom: 10px;
            color: var(--muted);
            font-size: .8rem;
        }

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

        .suggestion-tags button {
            padding: 7px 11px;
            border: 1px solid var(--line);
            border-radius: 999px;
            color: var(--text);
            background: var(--surface-alt);
            font-size: .82rem;
        }

        .suggestion-tags button:hover {
            color: var(--primary-dark);
            border-color: #b8d0ec;
            background: var(--primary-pale);
        }

        @media (max-width: 1080px) {
            :root {
                --section-space: 76px;
            }

            .nav-shell {
                grid-template-columns: minmax(210px, 1fr) auto;
            }

            .nav-links,
            .nav-actions .command-search,
            .nav-actions .nav-quick,
            .nav-actions .button {
                display: none;
            }

            .menu-toggle {
                display: grid;
            }

            .mobile-panel.open {
                display: block;
                padding: 0 20px 20px;
                border-top: 1px solid var(--line);
                background: #fff;
            }

            .mobile-search {
                display: flex;
                gap: 9px;
                padding: 16px 0 10px;
            }

            .mobile-search button:first-child {
                min-height: 44px;
                flex: 1;
                padding: 0 14px;
                border: 1px solid var(--line);
                border-radius: 10px;
                color: var(--muted);
                background: var(--surface-alt);
                text-align: left;
            }

            .mobile-panel nav {
                display: grid;
                gap: 5px;
            }

            .mobile-panel nav a {
                padding: 11px 12px;
                border-radius: 9px;
                color: var(--text);
                font-weight: 680;
            }

            .mobile-panel nav a.active {
                color: var(--primary-dark);
                background: var(--primary-soft);
            }

            .hero-stage {
                grid-template-columns: 1fr 1fr;
            }

            .hero-index {
                grid-column: 1 / -1;
            }

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

            .metric-intro {
                grid-column: 1 / -1;
            }

            .metric:nth-child(even) {
                border-left: 0;
            }

            .pain-layout,
            .solutions,
            .faq-layout,
            .contact-layout {
                gap: 38px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 64px;
            }

            html {
                scroll-padding-top: 84px;
            }

            .container {
                width: min(calc(100% - 32px), var(--container));
            }

            .notice-inner {
                justify-content: flex-start;
                padding: 8px 42px 8px 0;
                text-align: left;
            }

            .notice-close {
                right: 8px;
            }

            .nav-shell {
                min-height: 68px;
            }

            .brand {
                font-size: .91rem;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
                flex-basis: 34px;
            }

            .hero {
                padding: 56px 0 46px;
            }

            h1 {
                font-size: clamp(2.15rem, 10vw, 3.3rem);
            }

            .hero-lead {
                font-size: 1rem;
            }

            .hero-stage {
                grid-template-columns: 1fr;
            }

            .hero-index {
                grid-column: auto;
                grid-template-columns: 1fr;
            }

            .region-pills {
                grid-template-columns: repeat(4, 1fr);
            }

            .section-head {
                display: block;
                margin-bottom: 30px;
            }

            .section-head .button {
                margin-top: 17px;
            }

            .pain-layout,
            .solutions,
            .faq-layout,
            .contact-layout,
            .news-layout {
                grid-template-columns: 1fr;
            }

            .pain-intro,
            .solution-copy {
                position: static;
            }

            .service-row {
                grid-template-columns: 50px 1fr;
            }

            .row-action {
                grid-column: 2;
            }

            .metrics-band {
                grid-template-columns: 1fr 1fr;
            }

            .metric-intro {
                min-height: 145px;
            }

            .metric {
                min-height: 135px;
                padding: 22px;
            }

            .case-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }

            .case-card.featured {
                grid-row: auto;
                min-height: 350px;
            }

            .news-item {
                grid-template-columns: 78px 1fr;
            }

            .news-type {
                grid-column: 2;
            }

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

            .field.full,
            .check-field,
            .form-actions,
            .form-status {
                grid-column: auto;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .floating-cta {
                right: 14px;
                bottom: 14px;
                left: 14px;
                justify-content: space-between;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 54px;
            }

            .container {
                width: min(calc(100% - 26px), var(--container));
            }

            .brand-text {
                max-width: 210px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .hero {
                padding-top: 43px;
            }

            h1 {
                font-size: 2.23rem;
                overflow-wrap: anywhere;
            }

            h2 {
                font-size: 1.72rem;
            }

            .hero-actions {
                display: grid;
                grid-template-columns: 1fr;
            }

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

            .hero-index,
            .hero-mini {
                padding: 19px;
            }

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

            .trust-strip {
                display: grid;
                gap: 9px;
            }

            .service-row {
                grid-template-columns: 42px 1fr;
                gap: 13px;
                padding: 16px;
            }

            .service-number {
                width: 42px;
                height: 42px;
            }

            .metrics-band {
                grid-template-columns: 1fr;
            }

            .metric-intro,
            .metric {
                grid-column: auto;
                border-left: 0;
                border-top: 1px solid #d8e5f5;
            }

            .metric-intro {
                border-top: 0;
            }

            .case-card,
            .case-card.featured {
                min-height: 295px;
                padding: 23px;
            }

            .case-card.featured h3 {
                font-size: 1.55rem;
            }

            .poster-card {
                min-width: 79vw;
                max-width: 79vw;
            }

            .solution-item {
                grid-template-columns: 43px 1fr;
                gap: 12px;
            }

            .solution-list::before {
                left: 20px;
            }

            .step-mark {
                width: 43px;
                height: 43px;
            }

            .step-body {
                padding: 17px;
            }

            .news-item {
                grid-template-columns: 1fr auto;
                gap: 7px 12px;
            }

            .news-date {
                grid-column: 1;
            }

            .news-item > div {
                grid-column: 1 / -1;
            }

            .news-type {
                grid-column: 2;
                grid-row: 1;
            }

            .faq-answer {
                padding-right: 8px;
            }

            .feedback-form {
                padding: 20px;
            }

            .form-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .form-actions .button {
                width: 100%;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 31px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .footer-bottom {
                align-items: flex-start;
                flex-direction: column;
            }

            .floating-cta p {
                display: none;
            }

            .floating-cta {
                left: auto;
                padding: 8px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *, *::before, *::after {
                transition-duration: .01ms !important;
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
            }
        }

/* roulang page: category1 */
:root {
      --primary: #1769e0;
      --primary-dark: #0e52ba;
      --primary-soft: #eaf3ff;
      --primary-pale: #f5f9ff;
      --accent: #0f9f83;
      --accent-soft: #e9f8f4;
      --warning: #d97706;
      --warning-soft: #fff7e8;
      --danger: #c43d4f;
      --danger-soft: #fff0f2;
      --ink: #16243a;
      --text: #34445b;
      --muted: #6d7d91;
      --line: #dce5f0;
      --line-strong: #c8d6e7;
      --surface: #ffffff;
      --surface-alt: #f7f9fc;
      --footer: #122138;
      --radius-sm: 9px;
      --radius: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 5px 16px rgba(25, 58, 99, .07);
      --shadow: 0 14px 38px rgba(25, 58, 99, .10);
      --container: 1220px;
      --section-space: 68px;
      --button-height: 46px;
      --transition: 180ms ease;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 112px; }
    body {
      margin: 0;
      color: var(--text);
      background: var(--surface);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    body.menu-open { overflow: hidden; }
    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    }
    button, input, select, textarea { color: inherit; font: inherit; }
    button { border: 0; cursor: pointer; }
    button:disabled { cursor: not-allowed; opacity: .55; }
    img { display: block; max-width: 100%; }
    .container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
    .section { padding: var(--section-space) 0; }
    .section-alt { background: var(--surface-alt); }
    .section-blue { background: var(--primary-pale); border-block: 1px solid #e3edf9; }
    .skip-link {
      position: fixed; top: -80px; left: 18px; z-index: 300;
      padding: 8px 14px; border-radius: 8px; color: #fff; background: var(--primary);
    }
    .skip-link:focus { top: 14px; }
    :focus-visible { outline: 3px solid rgba(23,105,224,.35); outline-offset: 3px; }

    .notice-bar {
      border-bottom: 1px solid #e4ecf5;
      background: #f8fbff;
      color: #52647b;
      font-size: .84rem;
    }
    .notice-inner {
      min-height: 36px; display: flex; align-items: center; justify-content: space-between; gap: 18px;
    }
    .notice-inner p { margin: 0; }
    .notice-close {
      width: 28px; height: 28px; display: inline-grid; place-items: center;
      border-radius: 7px; color: var(--muted); background: transparent; font-size: 1.1rem;
    }
    .notice-close:hover { color: var(--primary-dark); background: var(--primary-soft); }

    .site-header {
      position: sticky; z-index: 100; top: 0;
      border-bottom: 1px solid rgba(220,229,240,.92);
      background: rgba(255,255,255,.97);
      box-shadow: 0 5px 18px rgba(27,51,82,.045);
    }
    .header-inner {
      min-height: 76px; display: flex; align-items: center; gap: 25px;
    }
    .brand {
      display: inline-flex; flex: 0 0 auto; align-items: center; gap: 10px;
      color: var(--ink); font-size: 1.02rem; font-weight: 800; line-height: 1.25;
    }
    .brand:hover { color: var(--primary-dark); }
    .brand-mark {
      width: 30px; height: 30px; display: inline-flex; align-items: flex-end; gap: 3px;
      padding: 6px; border-radius: 9px; background: var(--primary);
    }
    .brand-mark i { display: block; width: 3px; border-radius: 3px; background: #fff; }
    .brand-mark i:nth-child(1) { height: 8px; opacity: .72; }
    .brand-mark i:nth-child(2) { height: 14px; }
    .brand-mark i:nth-child(3) { height: 10px; opacity: .85; }
    .brand-mark i:nth-child(4) { height: 17px; }
    .nav-links { display: flex; align-items: center; gap: 5px; margin-left: auto; }
    .nav-links a {
      padding: 9px 11px; border-radius: 8px; color: #506177; font-size: .92rem; font-weight: 700; white-space: nowrap;
    }
    .nav-links a:hover { color: var(--primary-dark); background: var(--primary-pale); }
    .nav-links a.active { color: var(--primary-dark); background: var(--primary-soft); }
    .header-tools { display: flex; align-items: center; gap: 10px; }
    .command-search {
      width: 176px; height: 40px; display: flex; align-items: center; gap: 8px;
      padding: 0 10px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-alt);
    }
    .command-search svg { flex: 0 0 auto; color: var(--muted); }
    .command-search input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; font-size: .85rem; }
    .command-search kbd {
      padding: 1px 5px; border: 1px solid var(--line); border-radius: 4px; color: var(--muted); background: #fff; font-size: .7rem;
    }
    .button {
      min-height: var(--button-height); display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      padding: 10px 17px; border: 1px solid transparent; border-radius: 10px; font-weight: 750; line-height: 1.2; white-space: nowrap;
    }
    .button:hover { transform: translateY(-2px); }
    .button:active { transform: translateY(0) scale(.98); }
    .button-primary { color: #fff; border-color: var(--primary); background: var(--primary); box-shadow: 0 8px 18px rgba(23,105,224,.18); }
    .button-primary:hover { border-color: var(--primary-dark); background: var(--primary-dark); box-shadow: 0 11px 24px rgba(23,105,224,.24); }
    .button-secondary { color: var(--primary-dark); border-color: var(--line-strong); background: #fff; }
    .button-secondary:hover { border-color: var(--primary); background: var(--primary-pale); }
    .button-text { min-height: auto; padding: 5px 0; color: var(--primary-dark); background: transparent; }
    .button-text:hover { color: var(--primary); transform: translateX(3px); }
    .menu-toggle {
      display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line);
      border-radius: 9px; color: var(--primary-dark); background: #fff;
    }
    .menu-toggle svg { width: 21px; height: 21px; }

    .breadcrumb {
      display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 20px 0 0; color: var(--muted); font-size: .87rem;
    }
    .breadcrumb a:hover { color: var(--primary-dark); }
    .breadcrumb span[aria-hidden="true"] { color: #a1afbf; }
    .page-intro { padding: 28px 0 44px; }
    .intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) 342px; gap: 48px; align-items: end; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--primary-dark);
      font-size: .84rem; font-weight: 800; letter-spacing: .04em;
    }
    .eyebrow::before { width: 22px; height: 3px; border-radius: 99px; background: var(--primary); content: ""; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 860px; margin-bottom: 16px; color: var(--ink); font-size: clamp(2rem, 4vw, 3.45rem); line-height: 1.22; letter-spacing: 0; }
    h2 { margin-bottom: 12px; color: var(--ink); font-size: clamp(1.45rem, 2.4vw, 2.15rem); line-height: 1.35; letter-spacing: 0; }
    h3 { margin-bottom: 7px; color: var(--ink); font-size: 1.05rem; line-height: 1.45; }
    .intro-copy { max-width: 770px; margin-bottom: 0; color: var(--text); font-size: 1.04rem; }
    .update-panel {
      display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm);
    }
    .update-panel div { padding: 16px; }
    .update-panel div + div { border-left: 1px solid var(--line); }
    .update-panel strong { display: block; color: var(--ink); font-size: 1.35rem; line-height: 1.2; }
    .update-panel span { display: block; margin-top: 3px; color: var(--muted); font-size: .79rem; }

    .filter-strip { border-block: 1px solid var(--line); background: #fff; }
    .filter-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 72px; }
    .filter-tabs { display: flex; align-items: center; gap: 8px; overflow-x: auto; padding-block: 12px; scrollbar-width: thin; }
    .filter-tabs button {
      flex: 0 0 auto; padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; color: #53647a; background: #fff; font-size: .88rem; font-weight: 700;
    }
    .filter-tabs button:hover, .filter-tabs button.active { color: var(--primary-dark); border-color: #b9d1f3; background: var(--primary-soft); }
    .sort-button {
      display: inline-flex; flex: 0 0 auto; align-items: center; gap: 7px; color: var(--primary-dark); background: transparent; font-weight: 750; white-space: nowrap;
    }
    .sort-button:hover { color: var(--primary); }

    .content-layout { display: grid; grid-template-columns: 272px minmax(0, 1fr); gap: 30px; align-items: start; }
    .side-filter { position: sticky; top: 98px; padding: 21px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
    .side-filter h2 { margin-bottom: 16px; font-size: 1.05rem; }
    .filter-group + .filter-group { margin-top: 19px; padding-top: 18px; border-top: 1px solid var(--line); }
    .filter-group h3 { margin-bottom: 10px; font-size: .88rem; }
    .check-option {
      display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 7px 0; color: #526278; font-size: .9rem; cursor: pointer;
    }
    .check-option:hover { color: var(--primary-dark); }
    .check-option input { width: 16px; height: 16px; accent-color: var(--primary); }
    .check-option span:last-child { color: #94a1b1; font-size: .77rem; }
    .hot-tags { display: flex; flex-wrap: wrap; gap: 7px; }
    .tag {
      display: inline-flex; align-items: center; padding: 5px 9px; border: 1px solid var(--line); border-radius: 999px; color: #63758b; background: var(--surface-alt); font-size: .76rem; font-weight: 700;
    }
    .tag:hover { color: var(--primary-dark); border-color: #b6d0f3; background: var(--primary-soft); }

    .list-top { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 16px; }
    .list-top p { margin: 0; color: var(--muted); font-size: .9rem; }
    .content-list { display: grid; gap: 14px; }
    .content-item {
      display: grid; grid-template-columns: 164px minmax(0, 1fr) auto; gap: 20px; align-items: center;
      padding: 15px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 4px 12px rgba(25,58,99,.035);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .content-item:hover { transform: translateY(-2px); border-color: #b8d1f0; box-shadow: var(--shadow); }
    .cover {
      position: relative; min-height: 104px; overflow: hidden; border-radius: 10px; background: #ddecff;
    }
    .cover::before, .cover::after { position: absolute; content: ""; }
    .cover::before { inset: 0; background: linear-gradient(135deg, #d9ecff 0%, #eff7ff 55%, #d7f1ea 100%); }
    .cover::after { right: 14px; bottom: 13px; width: 53px; height: 53px; border: 8px solid rgba(23,105,224,.55); border-radius: 50%; box-shadow: -23px -9px 0 -10px rgba(15,159,131,.9); }
    .cover--sea::before { background: linear-gradient(135deg, #e0efff, #e9f8f4); }
    .cover--warm::before { background: linear-gradient(135deg, #fff3db, #eff7ff); }
    .cover--violet::before { background: linear-gradient(135deg, #ececff, #eaf7ff); }
    .cover-label { position: absolute; z-index: 1; top: 10px; left: 10px; padding: 3px 8px; border-radius: 999px; color: var(--primary-dark); background: rgba(255,255,255,.85); font-size: .7rem; font-weight: 800; }
    .item-body { min-width: 0; }
    .item-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 5px; color: var(--muted); font-size: .78rem; }
    .badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px; border-radius: 999px; color: var(--primary-dark); background: var(--primary-soft); font-size: .76rem; font-weight: 780; line-height: 1.2; }
    .badge.green { color: #087560; background: var(--accent-soft); }
    .badge.orange { color: #9a5805; background: var(--warning-soft); }
    .item-body h3 { overflow: hidden; margin-bottom: 5px; font-size: 1.05rem; text-overflow: ellipsis; white-space: nowrap; }
    .item-body h3 a:hover { color: var(--primary-dark); }
    .item-body p {
      display: -webkit-box; overflow: hidden; margin-bottom: 0; color: var(--muted); font-size: .88rem; line-height: 1.7;
      -webkit-box-orient: vertical; -webkit-line-clamp: 2;
    }
    .item-action { color: var(--primary-dark); font-size: .87rem; font-weight: 800; white-space: nowrap; }
    .item-action:hover { color: var(--primary); transform: translateX(2px); }

    .pagination { display: flex; justify-content: center; gap: 8px; margin-top: 32px; }
    .pagination button {
      width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 8px; color: #5a6b81; background: #fff; font-weight: 750;
    }
    .pagination button:hover, .pagination button.active { color: #fff; border-color: var(--primary); background: var(--primary); }
    .pagination button:disabled { color: #a8b2bf; background: var(--surface-alt); }

    .index-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; }
    .index-card { padding: 29px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
    .index-card h2 { margin-bottom: 8px; font-size: 1.45rem; }
    .index-card > p { color: var(--muted); }
    .route-list { margin: 23px 0 0; padding: 0; list-style: none; counter-reset: route; }
    .route-list li {
      position: relative; display: grid; grid-template-columns: 34px minmax(0,1fr); gap: 12px; padding: 13px 0; border-top: 1px solid var(--line);
    }
    .route-list li::before {
      display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; color: var(--primary-dark); background: var(--primary-soft);
      content: counter(route, decimal-leading-zero); counter-increment: route; font-size: .72rem; font-weight: 800;
    }
    .route-list strong { display: block; color: var(--ink); font-size: .94rem; }
    .route-list span { display: block; color: var(--muted); font-size: .84rem; }
    .rules-list { display: grid; gap: 12px; margin-top: 22px; }
    .rule {
      display: flex; gap: 11px; align-items: flex-start; padding: 13px; border-radius: 10px; background: var(--primary-pale); color: #4d6078; font-size: .88rem;
    }
    .rule svg { flex: 0 0 auto; margin-top: 5px; color: var(--primary); }
    .rule strong { color: var(--ink); }

    .faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 60px; align-items: start; }
    .faq-intro p { color: var(--muted); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-question {
      width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 0;
      color: var(--ink); text-align: left; background: transparent; font-weight: 780;
    }
    .faq-question span:last-child {
      width: 27px; height: 27px; display: grid; flex: 0 0 auto; place-items: center; border-radius: 50%; color: var(--primary-dark); background: var(--primary-soft); font-size: 1.2rem; transition: transform var(--transition);
    }
    .faq-question[aria-expanded="true"] span:last-child { transform: rotate(45deg); background: var(--primary); color: #fff; }
    .faq-answer { display: none; max-width: 700px; padding: 0 0 18px; color: var(--muted); font-size: .93rem; }
    .faq-answer.open { display: block; }

    .feedback-band { padding: 54px 0; background: var(--primary-pale); border-top: 1px solid #dfeafa; }
    .feedback-grid { display: grid; grid-template-columns: .83fr 1.17fr; gap: 48px; align-items: start; }
    .feedback-copy h2 { max-width: 440px; }
    .feedback-copy p { max-width: 460px; color: var(--muted); }
    .contact-points { display: grid; gap: 11px; margin-top: 22px; }
    .contact-points a, .contact-points span { display: flex; align-items: center; gap: 9px; color: #506177; font-size: .9rem; }
    .contact-points a:hover { color: var(--primary-dark); }
    .feedback-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 23px; border: 1px solid #d6e4f5; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { color: var(--ink); font-size: .87rem; font-weight: 750; }
    input, select, textarea {
      width: 100%; border: 1px solid var(--line-strong); border-radius: 9px; outline: 0; background: #fff; padding: 10px 11px; line-height: 1.4;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }
    textarea { min-height: 104px; resize: vertical; }
    input::placeholder, textarea::placeholder { color: #a2adba; }
    input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(23,105,224,.14); }
    .privacy-check { display: flex; gap: 8px; align-items: flex-start; grid-column: 1 / -1; color: var(--muted); font-size: .82rem; line-height: 1.55; }
    .privacy-check input { width: 16px; height: 16px; margin-top: 3px; accent-color: var(--primary); }
    .form-actions { display: flex; align-items: center; justify-content: space-between; gap: 15px; grid-column: 1 / -1; }
    .form-note { color: var(--muted); font-size: .78rem; }

    .site-footer { color: #cfdae8; background: var(--footer); }
    .footer-top { display: grid; grid-template-columns: 1.55fr .72fr .72fr; gap: 48px; padding: 55px 0 38px; }
    .site-footer .brand { color: #fff; }
    .site-footer .brand-mark { background: #2c7bea; }
    .footer-brand p { max-width: 495px; margin: 17px 0; color: #aebdce; font-size: .88rem; }
    .footer-compliance { max-width: 530px; padding: 12px 14px; border: 1px solid rgba(189,211,237,.18); border-radius: 9px; color: #aebdce; background: rgba(255,255,255,.045); font-size: .79rem; line-height: 1.65; }
    .footer-column h2 { margin-bottom: 13px; color: #fff; font-size: .93rem; }
    .footer-links { display: grid; gap: 8px; }
    .footer-links a { color: #b4c3d4; font-size: .86rem; }
    .footer-links a:hover { color: #fff; transform: translateX(2px); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 19px 0; border-top: 1px solid rgba(196,215,238,.16); color: #8fa1b7; font-size: .78rem; }
    .footer-bottom-links { display: flex; flex-wrap: wrap; gap: 17px; }
    .footer-bottom-links a:hover { color: #fff; }

    @media (max-width: 1080px) {
      .header-inner { gap: 14px; }
      .nav-links a { padding-inline: 8px; font-size: .85rem; }
      .command-search { width: 145px; }
      .intro-grid { grid-template-columns: 1fr 292px; gap: 28px; }
      .content-layout { grid-template-columns: 238px minmax(0,1fr); gap: 21px; }
    }
    @media (max-width: 850px) {
      :root { --section-space: 54px; }
      .header-inner { min-height: 68px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .header-tools { margin-left: auto; }
      .command-search { display: none; }
      .header-tools .button { display: none; }
      .nav-links {
        position: fixed; top: 105px; right: 20px; left: 20px; display: none; flex-direction: column; align-items: stretch; padding: 12px;
        border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow);
      }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 12px; }
      .intro-grid, .content-layout, .faq-layout, .feedback-grid { grid-template-columns: 1fr; }
      .update-panel { max-width: 360px; }
      .side-filter { position: static; }
      .filter-inner { align-items: flex-start; flex-direction: column; padding-block: 10px; }
      .filter-tabs { width: 100%; }
      .index-grid { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1.25fr 1fr; }
      .footer-brand { grid-column: 1 / -1; }
    }
    @media (max-width: 600px) {
      .container { width: min(calc(100% - 32px), var(--container)); }
      .notice-inner { min-height: 40px; gap: 8px; line-height: 1.45; }
      .notice-inner p { font-size: .75rem; }
      .brand { font-size: .9rem; }
      .brand-mark { width: 28px; height: 28px; }
      .page-intro { padding-bottom: 31px; }
      h1 { font-size: 2rem; }
      .intro-copy { font-size: .97rem; }
      .content-item { grid-template-columns: 112px minmax(0,1fr); gap: 13px; padding: 11px; }
      .cover { min-height: 112px; }
      .item-action { display: none; }
      .item-body h3 { font-size: .96rem; white-space: normal; }
      .item-body p { font-size: .81rem; }
      .item-meta { gap: 5px; font-size: .72rem; }
      .feedback-form { grid-template-columns: 1fr; padding: 17px; }
      .field.full { grid-column: auto; }
      .form-actions { grid-column: auto; flex-direction: column; align-items: stretch; }
      .form-actions .button { width: 100%; }
      .footer-top { grid-template-columns: 1fr; gap: 28px; padding-top: 42px; }
      .footer-brand { grid-column: auto; }
      .footer-bottom { align-items: flex-start; flex-direction: column; gap: 9px; }
    }

/* roulang page: category2 */
:root{
 --primary:#1769e0;--primary-dark:#0e52ba;--primary-soft:#eaf3ff;--primary-pale:#f5f9ff;
 --accent:#0f9f83;--accent-soft:#e9f8f4;--warning:#d97706;--warning-soft:#fff7e8;
 --danger:#c43d4f;--danger-soft:#fff0f2;--ink:#16243a;--text:#34445b;--muted:#6d7d91;
 --line:#dce5f0;--line-strong:#c8d6e7;--surface:#fff;--surface-alt:#f7f9fc;--footer:#122138;
 --radius-sm:9px;--radius:14px;--radius-lg:20px;--shadow-sm:0 5px 16px rgba(25,58,99,.07);
 --shadow:0 14px 38px rgba(25,58,99,.10);--container:1220px;--space:84px;--transition:180ms ease
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;color:var(--text);background:var(--surface);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),border-color var(--transition),transform var(--transition),box-shadow var(--transition)}
button,input,select,textarea{font:inherit;color:inherit}
button{border:0;cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,105,224,.28);outline-offset:3px}
img{display:block;max-width:100%}
.container{width:min(calc(100% - 40px),var(--container));margin:auto}
.section{padding:var(--space) 0}
.section-alt{background:var(--surface-alt)}
.section-blue{background:var(--primary-pale);border-block:1px solid #e7eff9}
.eyebrow{display:inline-flex;gap:8px;align-items:center;margin-bottom:12px;color:var(--primary-dark);font-size:.84rem;font-weight:750;letter-spacing:.04em}
.eyebrow:before{content:"";width:22px;height:3px;border-radius:99px;background:var(--primary)}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{color:var(--ink);line-height:1.25}
h1{margin-bottom:20px;font-size:clamp(2.2rem,4.3vw,4.2rem);letter-spacing:0}
h2{margin-bottom:14px;font-size:clamp(1.7rem,2.8vw,2.45rem)}
h3{margin-bottom:8px;font-size:1.15rem}
.button{min-height:46px;display:inline-flex;gap:9px;align-items:center;justify-content:center;padding:11px 19px;border:1px solid transparent;border-radius:11px;font-weight:720;line-height:1.2;white-space:nowrap}
.button:hover{transform:translateY(-2px)}
.button:active{transform:translateY(0) scale(.98)}
.button-primary{color:#fff;border-color:var(--primary);background:var(--primary);box-shadow:0 8px 18px rgba(23,105,224,.2)}
.button-primary:hover{border-color:var(--primary-dark);background:var(--primary-dark);box-shadow:0 10px 24px rgba(23,105,224,.25)}
.button-secondary{color:var(--primary-dark);border-color:var(--line-strong);background:#fff}
.button-secondary:hover{border-color:var(--primary);background:var(--primary-pale)}
.button-text{min-height:auto;padding:6px 0;color:var(--primary-dark)}
.button-text:hover{color:var(--primary);transform:translateX(3px)}
.badge{display:inline-flex;gap:6px;align-items:center;padding:5px 10px;border-radius:999px;color:var(--primary-dark);background:var(--primary-soft);font-size:.78rem;font-weight:730;line-height:1.2}
.badge.green{color:#087560;background:var(--accent-soft)}
.badge.orange{color:#9a5805;background:var(--warning-soft)}
.badge.red{color:#9f2e3d;background:var(--danger-soft)}
.site-header{position:sticky;z-index:20;top:0;border-bottom:1px solid rgba(220,229,240,.92);background:rgba(255,255,255,.97);box-shadow:0 5px 18px rgba(27,51,82,.045)}
.navbar{min-height:76px;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap}
.brand-mark{width:29px;height:29px;display:grid;grid-template-columns:repeat(2,1fr);gap:3px;padding:5px;border-radius:8px;background:var(--primary)}
.brand-mark i{display:block;border-radius:2px;background:#fff}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{padding:10px 13px;border-radius:9px;color:var(--muted);font-size:.94rem;font-weight:650}
.nav-links a:hover,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
.command-search{width:178px;height:40px;display:flex;align-items:center;gap:8px;padding:0 11px;border:1px solid var(--line);border-radius:9px;color:var(--muted);background:var(--surface-alt);font-size:.84rem}
.command-search input{width:100%;min-width:0;border:0;outline:0;background:transparent}
.command-search kbd{padding:1px 5px;border:1px solid var(--line);border-radius:4px;background:#fff;font-size:.7rem}
.nav-cta{min-height:40px;padding:9px 14px;font-size:.86rem}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:1.3rem}
.notice{padding:8px 16px;text-align:center;color:#5d6e83;background:#f8fbff;border-bottom:1px solid var(--line);font-size:.82rem}
.notice strong{color:var(--ink)}
.page-intro{padding:64px 0 48px;background:var(--primary-pale);border-bottom:1px solid #e7eff9}
.breadcrumb{display:flex;gap:9px;margin-bottom:24px;color:var(--muted);font-size:.86rem}
.breadcrumb a{color:var(--primary-dark)}
.intro-grid{display:grid;grid-template-columns:1fr 390px;gap:60px;align-items:end}
.intro-grid p{max-width:760px;margin-bottom:0;color:var(--muted);font-size:1.05rem}
.intro-meta{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.topic-bar{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--line)}
.topic-tabs{display:flex;gap:8px;flex-wrap:wrap}
.topic-tabs button,.sort-button{padding:8px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--muted);font-weight:650;cursor:pointer}
.topic-tabs button:hover,.topic-tabs button.active,.sort-button:hover{border-color:var(--primary);color:var(--primary-dark);background:var(--primary-soft)}
.topic-search{height:40px;width:220px;padding:0 12px;border:1px solid var(--line);border-radius:8px;outline:0;background:#fff}
.topic-search:focus{border-color:var(--primary)}
.feature-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
.feature-panel,.timeline{border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.feature-panel{padding:30px;display:grid;grid-template-columns:190px 1fr;gap:27px}
.cover-art{min-height:250px;display:flex;align-items:flex-end;padding:18px;border-radius:12px;background:#18375f;color:#fff;position:relative;overflow:hidden}
.cover-art:before{content:"";position:absolute;inset:18px 18px auto auto;width:76px;height:76px;border:1px solid rgba(255,255,255,.45);border-radius:50%}
.cover-art:after{content:"";position:absolute;right:-20px;bottom:36px;width:150px;height:2px;background:#47c9b2;transform:rotate(-35deg)}
.cover-art span{position:relative;z-index:1;font-size:1.25rem;font-weight:800;line-height:1.35}
.feature-copy p{color:var(--muted)}
.feature-copy .button{margin-top:12px}
.timeline{padding:25px 27px}
.timeline h3{display:flex;justify-content:space-between;align-items:center}
.timeline-list{list-style:none;margin:14px 0 0;padding:0}
.timeline-list li{display:grid;grid-template-columns:74px 15px 1fr;gap:11px;padding:15px 0;border-top:1px solid var(--line);font-size:.92rem}
.timeline-list time{color:var(--muted);font-size:.82rem}
.status-dot{width:10px;height:10px;margin-top:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.status-dot.gray{background:#a9b6c7;box-shadow:0 0 0 4px #f0f3f7}
.content-layout{display:grid;grid-template-columns:250px 1fr;gap:42px}
.filter-panel{align-self:start;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.filter-panel h3{margin-bottom:15px}
.filter-panel label{display:flex;gap:9px;align-items:center;margin:12px 0;color:var(--text);font-size:.92rem}
.filter-panel input{accent-color:var(--primary)}
.content-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.content-item{display:grid;grid-template-columns:112px 1fr;gap:17px;padding:17px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm);transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.content-item:hover{transform:translateY(-3px);border-color:#b9d1ef;box-shadow:var(--shadow)}
.thumb{aspect-ratio:4/3;display:flex;align-items:flex-end;padding:10px;border-radius:9px;background:#dcecff;color:#174a91;font-size:.85rem;font-weight:750}
.thumb.teal{background:#dff5ef;color:#087560}.thumb.orange{background:#fff0d5;color:#9a5805}.thumb.rose{background:#fbe3e8;color:#9f2e3d}
.content-item h3{margin:9px 0 5px;font-size:1rem}
.content-item p{display:-webkit-box;overflow:hidden;margin:0;color:var(--muted);font-size:.84rem;line-height:1.55;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.item-meta{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:.75rem}
.loading{display:none;padding:18px;text-align:center;color:var(--muted);grid-column:1/-1}
.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;text-align:left;background:transparent;color:var(--ink);font-weight:720}
.faq-question span:last-child{color:var(--primary);font-size:1.35rem;transition:transform var(--transition)}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.faq-answer{display:none;padding:0 35px 19px 0;color:var(--muted);font-size:.94rem}
.faq-item.open .faq-answer{display:block}
.feedback{padding:30px;border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow);border:1px solid var(--line)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:15px}
.field label{display:block;margin-bottom:6px;color:var(--ink);font-size:.86rem;font-weight:700}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line-strong);border-radius:9px;padding:11px 12px;outline:0;background:#fbfdff}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(23,105,224,.1)}
.checkline{display:flex;gap:8px;align-items:flex-start;margin:12px 0 20px;color:var(--muted);font-size:.8rem}
.checkline input{margin-top:5px;accent-color:var(--primary)}
.site-footer{padding:55px 0 22px;color:#b9c6d8;background:var(--footer)}
.site-footer .brand{color:#fff}
.footer-top{display:grid;grid-template-columns:1.5fr .7fr .8fr;gap:65px;padding-bottom:40px}
.footer-brand p{max-width:510px;margin:18px 0;color:#aab9cc;font-size:.9rem}
.footer-compliance{padding:13px 15px;border-left:3px solid #47c9b2;color:#b9c6d8;background:rgba(255,255,255,.05);font-size:.82rem}
.footer-column h2{margin:2px 0 13px;color:#fff;font-size:1rem}
.footer-links{display:grid;gap:8px;font-size:.88rem}
.footer-links a:hover,.footer-bottom-links a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:.78rem}
.footer-bottom-links{display:flex;gap:18px}
.cta-band{padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:25px;border-radius:var(--radius-lg);background:var(--primary);color:#fff}
.cta-band h2{margin:0 0 7px;color:#fff;font-size:1.7rem}.cta-band p{margin:0;color:#dceaff}
.cta-band .button-secondary{border-color:#dbe9ff}
@media(max-width:1024px){.navbar{gap:14px}.nav-links a{padding-inline:8px}.command-search{width:145px}.feature-layout{grid-template-columns:1fr}.intro-grid{grid-template-columns:1fr;gap:20px}.intro-meta{justify-content:flex-start}.footer-top{gap:30px}}
@media(max-width:768px){:root{--space:58px}.navbar{min-height:68px}.nav-links{display:none;position:absolute;top:69px;left:20px;right:20px;padding:10px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px}.command-search{width:42px;padding:0;justify-content:center}.command-search input,.command-search kbd{display:none}.nav-cta{display:none}.menu-toggle{display:block}.page-intro{padding:45px 0 35px}.content-layout{grid-template-columns:1fr;gap:25px}.filter-panel{display:flex;gap:18px;align-items:center;overflow:auto;padding:15px}.filter-panel h3{margin:0;white-space:nowrap}.filter-panel label{margin:0;white-space:nowrap}.content-list{grid-template-columns:1fr}.support-grid{grid-template-columns:1fr;gap:48px}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.cta-band{align-items:flex-start;flex-direction:column}}
@media(max-width:480px){.container{width:min(calc(100% - 30px),var(--container))}.notice{font-size:.75rem}.brand{font-size:.9rem}.brand-mark{width:26px;height:26px}.topic-bar{align-items:stretch;flex-direction:column}.topic-search{width:100%}.feature-panel{grid-template-columns:1fr;padding:18px}.cover-art{min-height:150px}.content-item{grid-template-columns:92px 1fr;padding:12px;gap:12px}.form-row{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.footer-bottom{align-items:flex-start;flex-direction:column}.footer-bottom-links{flex-wrap:wrap}.cta-band{padding:24px 20px}}