/* roulang page: index */
:root {
            --primary: #2457d6;
            --primary-dark: #173fa8;
            --primary-soft: #edf3ff;
            --cyan: #1b91ad;
            --cyan-soft: #eaf8fb;
            --warm: #f28a3a;
            --warm-soft: #fff3e8;
            --success: #16856a;
            --success-soft: #e9f8f3;
            --danger: #d84747;
            --bg: #f7f9fc;
            --surface: #ffffff;
            --surface-alt: #f0f4f9;
            --text: #15213a;
            --muted: #66738a;
            --light-text: #8c98ab;
            --border: #dfe6f0;
            --border-strong: #cbd6e5;
            --shadow-sm: 0 8px 24px rgba(29, 53, 91, .07);
            --shadow: 0 18px 48px rgba(30, 58, 105, .11);
            --shadow-hover: 0 24px 54px rgba(30, 68, 137, .15);
            --radius-sm: 9px;
            --radius: 15px;
            --radius-lg: 22px;
            --container: 1220px;
            --header-height: 76px;
            --ease: 180ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 96px;
        }

        body {
            margin: 0;
            color: var(--text);
            background:
                linear-gradient(rgba(36, 87, 214, .025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(36, 87, 214, .025) 1px, transparent 1px),
                var(--bg);
            background-size: 38px 38px;
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body.menu-open {
            overflow: hidden;
        }

        h1, h2, h3, h4, p, ul, ol, dl, dd, blockquote {
            margin-top: 0;
        }

        h1, h2, h3, h4 {
            color: var(--text);
            line-height: 1.22;
            letter-spacing: -.025em;
        }

        h1 {
            margin-bottom: 24px;
            font-size: clamp(2.55rem, 5.3vw, 4.8rem);
            font-weight: 850;
        }

        h2 {
            margin-bottom: 18px;
            font-size: clamp(1.9rem, 3.4vw, 2.75rem);
            font-weight: 800;
        }

        h3 {
            margin-bottom: 12px;
            font-size: 1.25rem;
            font-weight: 750;
        }

        p {
            margin-bottom: 18px;
            color: var(--muted);
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button, input, select {
            font: inherit;
        }

        button, a {
            -webkit-tap-highlight-color: transparent;
        }

        button {
            border: 0;
        }

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

        ul, ol {
            padding-left: 1.25rem;
        }

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

        :focus-visible {
            outline: 3px solid rgba(36, 87, 214, .28);
            outline-offset: 3px;
        }

        .skip-link {
            position: fixed;
            z-index: 1000;
            top: 12px;
            left: 12px;
            padding: 10px 16px;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-sm);
            transform: translateY(-160%);
            transition: transform var(--ease);
        }

        .skip-link:focus {
            transform: translateY(0);
        }

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

        .section {
            position: relative;
            padding: 104px 0;
        }

        .section-tight {
            padding: 74px 0;
        }

        .section-soft {
            background: rgba(237, 243, 255, .68);
            border-block: 1px solid rgba(203, 214, 229, .76);
        }

        .section-head {
            display: grid;
            grid-template-columns: minmax(0, 1.2fr) minmax(280px, .65fr);
            align-items: end;
            gap: 52px;
            margin-bottom: 46px;
        }

        .section-head p {
            margin-bottom: 4px;
            font-size: 1.03rem;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 15px;
            color: var(--primary);
            font-size: .82rem;
            font-weight: 800;
            letter-spacing: .08em;
        }

        .section-kicker::before {
            width: 28px;
            height: 2px;
            content: "";
            background: var(--primary);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            min-height: 30px;
            padding: 4px 10px;
            color: var(--primary-dark);
            background: var(--primary-soft);
            border: 1px solid #d4e1ff;
            border-radius: 999px;
            font-size: .78rem;
            font-weight: 750;
            line-height: 1.2;
        }

        .badge::before {
            width: 6px;
            height: 6px;
            content: "";
            background: currentColor;
            border-radius: 50%;
        }

        .badge-cyan {
            color: #126f85;
            background: var(--cyan-soft);
            border-color: #c9eaf0;
        }

        .badge-warm {
            color: #a85218;
            background: var(--warm-soft);
            border-color: #f5d5b9;
        }

        .badge-success {
            color: var(--success);
            background: var(--success-soft);
            border-color: #c6eadf;
        }

        .btn {
            display: inline-flex;
            min-height: 48px;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 11px 19px;
            color: var(--text);
            background: var(--surface);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 12px rgba(25, 48, 87, .05);
            cursor: pointer;
            font-size: .94rem;
            font-weight: 750;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        .btn:hover {
            border-color: #9fb4d4;
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-primary {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 10px 22px rgba(36, 87, 214, .22);
        }

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

        .btn-soft {
            color: var(--primary-dark);
            background: var(--primary-soft);
            border-color: #ccdafa;
        }

        .btn-link {
            min-height: auto;
            padding: 6px 0;
            color: var(--primary);
            background: transparent;
            border: 0;
            border-radius: 0;
            box-shadow: none;
        }

        .btn-link:hover {
            color: var(--primary-dark);
            box-shadow: none;
        }

        .btn .arrow {
            transition: transform var(--ease);
        }

        .btn:hover .arrow {
            transform: translateX(3px);
        }

        .btn[disabled] {
            color: var(--light-text);
            background: #e9edf3;
            border-color: #dce2eb;
            box-shadow: none;
            cursor: not-allowed;
            opacity: .72;
            transform: none;
        }

        .site-header {
            position: sticky;
            z-index: 100;
            top: 0;
            height: var(--header-height);
            background: rgba(255, 255, 255, .91);
            border-bottom: 1px solid rgba(203, 214, 229, .78);
            backdrop-filter: blur(14px);
            box-shadow: 0 7px 22px rgba(24, 48, 86, .04);
        }

        .nav-wrap {
            display: flex;
            height: var(--header-height);
            align-items: center;
            gap: 30px;
        }

        .logo {
            display: inline-flex;
            flex: 0 0 auto;
            align-items: center;
            gap: 11px;
            font-size: .98rem;
            font-weight: 850;
            letter-spacing: -.02em;
        }

        .logo-mark {
            position: relative;
            display: grid;
            width: 38px;
            height: 38px;
            place-items: center;
            color: #fff;
            background: var(--primary);
            border-radius: 10px;
            box-shadow: 0 8px 18px rgba(36, 87, 214, .24);
        }

        .logo-mark::before,
        .logo-mark::after {
            position: absolute;
            content: "";
            background: rgba(255, 255, 255, .78);
        }

        .logo-mark::before {
            width: 18px;
            height: 2px;
        }

        .logo-mark::after {
            width: 2px;
            height: 18px;
        }

        .logo-mark span {
            width: 10px;
            height: 10px;
            border: 2px solid #fff;
            border-radius: 50%;
        }

        .desktop-nav {
            display: flex;
            height: 100%;
            align-items: stretch;
            gap: 7px;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 0 14px;
            color: #4f5d73;
            font-size: .93rem;
            font-weight: 700;
            transition: color var(--ease), background var(--ease);
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(237, 243, 255, .65);
        }

        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            position: absolute;
            right: 14px;
            bottom: 0;
            left: 14px;
            height: 3px;
            content: "";
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }

        .mega-wrap {
            position: relative;
        }

        .mega-trigger {
            min-height: 42px;
            padding: 8px 13px;
        }

        .chevron {
            width: 7px;
            height: 7px;
            border-right: 2px solid currentColor;
            border-bottom: 2px solid currentColor;
            transform: translateY(-2px) rotate(45deg);
            transition: transform var(--ease);
        }

        .mega-trigger[aria-expanded="true"] .chevron {
            transform: translateY(2px) rotate(225deg);
        }

        .mega-menu {
            position: absolute;
            top: calc(100% + 14px);
            right: 0;
            width: 430px;
            padding: 14px;
            visibility: hidden;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            opacity: 0;
            transform: translateY(-7px);
            transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
        }

        .mega-menu.open {
            visibility: visible;
            opacity: 1;
            transform: translateY(0);
        }

        .mega-title {
            padding: 6px 8px 12px;
            color: var(--muted);
            font-size: .76rem;
            font-weight: 800;
            letter-spacing: .06em;
        }

        .mega-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .mega-item {
            display: block;
            min-height: 92px;
            padding: 15px;
            background: #f9fbfe;
            border: 1px solid var(--border);
            border-radius: 11px;
            transition: border-color var(--ease), background var(--ease), transform var(--ease);
        }

        .mega-item:hover {
            background: var(--primary-soft);
            border-color: #b9cafa;
            transform: translateY(-2px);
        }

        .mega-item strong {
            display: block;
            margin-bottom: 5px;
            font-size: .93rem;
        }

        .mega-item span {
            display: block;
            color: var(--muted);
            font-size: .78rem;
            line-height: 1.55;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            padding: 10px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            margin: 4px auto;
            background: var(--text);
            transition: transform var(--ease), opacity var(--ease);
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-panel {
            display: none;
        }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 54px 0 80px;
        }

        .hero::before {
            position: absolute;
            top: -260px;
            left: 50%;
            width: 850px;
            height: 850px;
            content: "";
            background: radial-gradient(circle, rgba(36, 87, 214, .13), rgba(36, 87, 214, 0) 67%);
            transform: translateX(-15%);
            pointer-events: none;
        }

        .hero-stage {
            position: relative;
            overflow: hidden;
            min-height: 610px;
            padding: 56px;
            background:
                linear-gradient(115deg, rgba(255,255,255,.98) 0%, rgba(248,251,255,.98) 62%, rgba(234,242,255,.98) 100%);
            border: 1px solid var(--border);
            border-radius: 26px;
            box-shadow: var(--shadow);
        }

        .hero-stage::before,
        .hero-stage::after {
            position: absolute;
            content: "";
            pointer-events: none;
        }

        .hero-stage::before {
            inset: 0;
            background:
                linear-gradient(90deg, transparent 49.85%, rgba(36,87,214,.055) 50%, transparent 50.15%),
                linear-gradient(transparent 49.85%, rgba(36,87,214,.055) 50%, transparent 50.15%);
            background-size: 110px 110px;
            mask-image: linear-gradient(to left, #000, transparent 78%);
        }

        .hero-stage::after {
            right: -70px;
            bottom: -130px;
            width: 390px;
            height: 390px;
            border: 1px solid rgba(36, 87, 214, .14);
            border-radius: 50%;
            box-shadow:
                0 0 0 55px rgba(36,87,214,.025),
                0 0 0 110px rgba(36,87,214,.02);
        }

        .hero-topline {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 54px;
        }

        .promo-label {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #9c4c14;
            font-size: .86rem;
            font-weight: 800;
        }

        .promo-burst {
            display: grid;
            width: 62px;
            height: 62px;
            place-items: center;
            color: #fff;
            background: var(--warm);
            clip-path: polygon(50% 0%, 61% 14%, 79% 7%, 84% 25%, 100% 28%, 91% 45%, 100% 59%, 83% 67%, 83% 85%, 64% 83%, 51% 100%, 39% 84%, 20% 91%, 17% 72%, 0% 64%, 10% 48%, 1% 32%, 19% 25%, 22% 7%, 40% 15%);
            font-size: .7rem;
            line-height: 1.15;
            text-align: center;
            transform: rotate(-7deg);
        }

        .update-window {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--muted);
            font-size: .83rem;
            font-weight: 700;
        }

        .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--success);
            border-radius: 50%;
            box-shadow: 0 0 0 5px rgba(22, 133, 106, .1);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: min(820px, 78%);
        }

        .hero-content h1 span {
            color: var(--primary);
        }

        .hero-lead {
            max-width: 720px;
            margin-bottom: 30px;
            color: #4e5d74;
            font-size: clamp(1rem, 1.6vw, 1.16rem);
            line-height: 1.85;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 42px;
        }

        .hero-actions .btn {
            min-height: 54px;
            padding-inline: 23px;
        }

        .hero-index {
            display: grid;
            max-width: 800px;
            grid-template-columns: 1.15fr 1fr 1fr;
            gap: 1px;
            overflow: hidden;
            background: var(--border);
            border: 1px solid var(--border);
            border-radius: var(--radius);
        }

        .index-cell {
            position: relative;
            padding: 19px 21px;
            background: rgba(255, 255, 255, .94);
        }

        .index-cell::before {
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            content: "";
            background: transparent;
        }

        .index-cell:first-child::before {
            background: var(--primary);
        }

        .index-cell small {
            display: block;
            margin-bottom: 5px;
            color: var(--light-text);
            font-size: .72rem;
            font-weight: 750;
        }

        .index-cell strong {
            display: block;
            font-size: .98rem;
        }

        .hero-float {
            position: absolute;
            z-index: 3;
            right: 40px;
            bottom: 38px;
            width: 270px;
            padding: 20px;
            background: rgba(255, 255, 255, .94);
            border: 1px solid #cdd9ec;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .hero-float::before,
        .hero-float::after {
            position: absolute;
            width: 18px;
            height: 18px;
            content: "";
            border-color: var(--primary);
        }

        .hero-float::before {
            top: 7px;
            left: 7px;
            border-top: 2px solid var(--primary);
            border-left: 2px solid var(--primary);
        }

        .hero-float::after {
            right: 7px;
            bottom: 7px;
            border-right: 2px solid var(--primary);
            border-bottom: 2px solid var(--primary);
        }

        .float-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
            padding-bottom: 11px;
            border-bottom: 1px solid var(--border);
        }

        .float-head strong {
            font-size: .9rem;
        }

        .float-list {
            display: grid;
            gap: 9px;
        }

        .float-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--muted);
            font-size: .82rem;
        }

        .float-row b {
            color: var(--text);
        }

        .feature-rail {
            display: grid;
            grid-template-columns: 1.35fr .88fr .88fr;
            gap: 18px;
        }

        .feature-card {
            position: relative;
            overflow: hidden;
            min-height: 250px;
            padding: 29px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        .feature-card:hover {
            border-color: #b5c7e2;
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .feature-card.feature-main {
            grid-row: span 2;
            min-height: 518px;
            padding: 36px;
            background: linear-gradient(145deg, #fff, #eef4ff);
        }

        .feature-card:nth-child(4) {
            grid-column: 2 / 4;
        }

        .feature-number {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 48px;
            color: var(--primary);
            font-size: .75rem;
            font-weight: 800;
            letter-spacing: .09em;
        }

        .feature-number::after {
            width: 48px;
            height: 1px;
            content: "";
            background: var(--border-strong);
        }

        .feature-main .feature-number {
            margin-bottom: 112px;
        }

        .feature-card p {
            max-width: 490px;
            margin-bottom: 24px;
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 26px;
        }

        .corner-lines {
            position: absolute;
            right: -28px;
            bottom: -28px;
            width: 150px;
            height: 150px;
            border: 1px solid rgba(36,87,214,.13);
            border-radius: 50%;
            box-shadow: 0 0 0 27px rgba(36,87,214,.035), 0 0 0 54px rgba(36,87,214,.02);
        }

        .scene-layout {
            display: grid;
            grid-template-columns: .74fr 1.26fr;
            gap: 64px;
        }

        .scene-intro {
            position: sticky;
            top: 108px;
            align-self: start;
        }

        .scene-list {
            position: relative;
            display: grid;
            gap: 18px;
        }

        .scene-list::before {
            position: absolute;
            top: 30px;
            bottom: 30px;
            left: 29px;
            width: 1px;
            content: "";
            background: linear-gradient(var(--primary), var(--border));
        }

        .scene-item {
            position: relative;
            display: grid;
            grid-template-columns: 60px 1fr auto;
            align-items: center;
            gap: 20px;
            min-height: 142px;
            padding: 25px 25px 25px 0;
            background: var(--surface);
            border: 1px solid var(--border);
            border-left: 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            box-shadow: var(--shadow-sm);
            transition: transform var(--ease), border-color var(--ease);
        }

        .scene-item:hover {
            border-color: #b7c8e1;
            transform: translateX(4px);
        }

        .scene-num {
            z-index: 1;
            display: grid;
            width: 58px;
            height: 58px;
            place-items: center;
            color: #fff;
            background: var(--primary);
            border: 7px solid var(--bg);
            border-radius: 50%;
            font-size: .8rem;
            font-weight: 850;
        }

        .scene-copy h3 {
            margin-bottom: 7px;
        }

        .scene-copy p {
            margin: 0;
            font-size: .92rem;
        }

        .path-board {
            display: grid;
            grid-template-columns: 1.25fr .75fr;
            gap: 18px;
        }

        .path-main,
        .path-small {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }

        .path-main {
            padding: 34px;
        }

        .path-small {
            display: grid;
            min-height: 168px;
            align-content: space-between;
            padding: 24px;
        }

        .path-side {
            display: grid;
            gap: 18px;
        }

        .path-titlebar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 27px;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border);
        }

        .path-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
        }

        .path-step {
            position: relative;
            padding: 19px 15px;
            background: #f8faff;
            border: 1px solid var(--border);
            border-radius: 11px;
        }

        .path-step:not(:last-child)::after {
            position: absolute;
            z-index: 2;
            top: 50%;
            right: -9px;
            width: 16px;
            height: 16px;
            content: "›";
            color: var(--primary);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 50%;
            font-size: 15px;
            font-weight: 900;
            line-height: 13px;
            text-align: center;
        }

        .path-step small {
            display: block;
            margin-bottom: 7px;
            color: var(--primary);
            font-size: .7rem;
            font-weight: 800;
        }

        .path-step strong {
            display: block;
            font-size: .87rem;
        }

        .path-summary {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin-top: 25px;
        }

        .metric {
            font-size: 2rem;
            font-weight: 850;
            line-height: 1;
        }

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

        .trust-strip {
            padding: 28px 0;
            background: var(--surface);
            border-block: 1px solid var(--border);
        }

        .trust-inner {
            display: grid;
            grid-template-columns: 1.1fr repeat(3, 1fr);
            align-items: center;
            gap: 22px;
        }

        .trust-copy strong {
            display: block;
            margin-bottom: 4px;
        }

        .trust-copy span {
            color: var(--muted);
            font-size: .82rem;
        }

        .trust-point {
            position: relative;
            padding-left: 24px;
            font-size: .9rem;
            font-weight: 730;
        }

        .trust-point::before {
            position: absolute;
            top: 9px;
            left: 0;
            width: 9px;
            height: 9px;
            content: "";
            background: var(--success);
            border: 3px solid #dff4ee;
            border-radius: 50%;
            box-sizing: content-box;
        }

        .content-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
            gap: 25px;
        }

        .update-list {
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }

        .update-item {
            display: grid;
            grid-template-columns: 64px 1fr auto;
            align-items: center;
            gap: 20px;
            min-height: 114px;
            padding: 19px 24px;
            border-bottom: 1px solid var(--border);
            transition: background var(--ease);
        }

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

        .update-item:hover {
            background: #f8faff;
        }

        .update-date {
            display: grid;
            width: 58px;
            height: 58px;
            place-items: center;
            align-content: center;
            color: var(--primary);
            background: var(--primary-soft);
            border: 1px solid #d6e2fb;
            border-radius: 10px;
            font-size: .72rem;
            font-weight: 800;
            line-height: 1.25;
        }

        .update-date b {
            font-size: 1.15rem;
        }

        .update-copy h3 {
            margin-bottom: 5px;
            font-size: 1.02rem;
        }

        .update-copy h3 a:hover {
            color: var(--primary);
        }

        .update-copy p {
            margin: 0;
            font-size: .86rem;
        }

        .text-arrow {
            display: inline-flex;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 50%;
            transition: color var(--ease), background var(--ease), transform var(--ease);
        }

        .update-item:hover .text-arrow {
            color: #fff;
            background: var(--primary);
            transform: translateX(3px);
        }

        .topic-panel {
            padding: 28px;
            background: linear-gradient(155deg, #214fbf, #183b91);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .topic-panel h3,
        .topic-panel p {
            color: #fff;
        }

        .topic-panel p {
            color: rgba(255,255,255,.72);
            font-size: .9rem;
        }

        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin: 23px 0 28px;
        }

        .topic-cloud a {
            padding: 7px 11px;
            color: rgba(255,255,255,.88);
            background: rgba(255,255,255,.09);
            border: 1px solid rgba(255,255,255,.17);
            border-radius: 999px;
            font-size: .78rem;
            transition: background var(--ease), border-color var(--ease);
        }

        .topic-cloud a:hover {
            background: rgba(255,255,255,.18);
            border-color: rgba(255,255,255,.4);
        }

        .topic-panel .btn {
            width: 100%;
            color: var(--primary-dark);
            border-color: #fff;
        }

        .access-grid {
            display: grid;
            grid-template-columns: .85fr 1.15fr .85fr;
            align-items: stretch;
            gap: 18px;
        }

        .access-card {
            position: relative;
            display: flex;
            min-height: 360px;
            flex-direction: column;
            padding: 30px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
        }

        .access-card:hover {
            border-color: #abc0e0;
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .access-card.recommended {
            min-height: 400px;
            margin-top: -20px;
            padding: 35px;
            background: linear-gradient(155deg, #fff, #edf3ff);
            border: 2px solid var(--primary);
        }

        .recommended-label {
            position: absolute;
            top: -14px;
            left: 28px;
            padding: 5px 12px;
            color: #fff;
            background: var(--primary);
            border-radius: 999px;
            font-size: .74rem;
            font-weight: 800;
        }

        .access-name {
            margin-bottom: 7px;
            font-size: 1.35rem;
            font-weight: 820;
        }

        .access-note {
            min-height: 48px;
            color: var(--muted);
            font-size: .88rem;
        }

        .access-status {
            margin: 24px 0;
            color: var(--primary);
            font-size: 1.55rem;
            font-weight: 850;
        }

        .access-list {
            display: grid;
            gap: 11px;
            margin: 0 0 28px;
            padding: 0;
            list-style: none;
        }

        .access-list li {
            position: relative;
            padding-left: 23px;
            color: #526077;
            font-size: .9rem;
        }

        .access-list li::before {
            position: absolute;
            top: 6px;
            left: 0;
            width: 13px;
            height: 8px;
            content: "";
            border-bottom: 2px solid var(--success);
            border-left: 2px solid var(--success);
            transform: rotate(-45deg);
        }

        .access-card .btn {
            width: 100%;
            margin-top: auto;
        }

        .security-grid {
            display: grid;
            grid-template-columns: .72fr 1.28fr;
            gap: 56px;
            align-items: center;
        }

        .shield-visual {
            position: relative;
            display: grid;
            min-height: 380px;
            place-items: center;
            background: linear-gradient(145deg, #edf3ff, #fff);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }

        .shield {
            position: relative;
            display: grid;
            width: 150px;
            height: 180px;
            place-items: center;
            color: var(--primary);
            background: #fff;
            border: 3px solid var(--primary);
            border-radius: 75px 75px 58px 58px;
            box-shadow: 0 20px 45px rgba(36,87,214,.16);
            clip-path: polygon(50% 0, 94% 15%, 88% 70%, 50% 100%, 12% 70%, 6% 15%);
        }

        .shield::before {
            width: 54px;
            height: 28px;
            content: "";
            border-bottom: 7px solid var(--primary);
            border-left: 7px solid var(--primary);
            transform: translateY(-7px) rotate(-45deg);
        }

        .visual-label {
            position: absolute;
            padding: 8px 12px;
            color: var(--primary-dark);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 9px;
            box-shadow: var(--shadow-sm);
            font-size: .76rem;
            font-weight: 750;
        }

        .visual-label.one {
            top: 54px;
            left: 34px;
        }

        .visual-label.two {
            right: 31px;
            bottom: 58px;
        }

        .security-list {
            display: grid;
            gap: 14px;
            margin-top: 29px;
        }

        .security-item {
            display: grid;
            grid-template-columns: 42px 1fr;
            gap: 15px;
            padding: 17px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
        }

        .security-icon {
            display: grid;
            width: 42px;
            height: 42px;
            place-items: center;
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 10px;
            font-weight: 900;
        }

        .security-item h3 {
            margin-bottom: 4px;
            font-size: .98rem;
        }

        .security-item p {
            margin: 0;
            font-size: .84rem;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: .65fr 1.35fr;
            gap: 64px;
        }

        .faq-note {
            padding: 24px;
            background: var(--primary-soft);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius) var(--radius) 0;
        }

        .faq-note strong {
            display: block;
            margin-bottom: 7px;
        }

        .faq-note p {
            margin: 0;
            font-size: .88rem;
        }

        .faq-list {
            display: grid;
            gap: 12px;
        }

        .faq-item {
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: border-color var(--ease), box-shadow var(--ease);
        }

        .faq-item.open {
            border-color: #abc0e7;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            width: 100%;
            min-height: 68px;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 19px 22px;
            color: var(--text);
            background: transparent;
            cursor: pointer;
            text-align: left;
            font-weight: 750;
        }

        .faq-question:hover {
            color: var(--primary);
            background: #fafcff;
        }

        .faq-icon {
            position: relative;
            flex: 0 0 28px;
            width: 28px;
            height: 28px;
            background: var(--primary-soft);
            border-radius: 50%;
        }

        .faq-icon::before,
        .faq-icon::after {
            position: absolute;
            top: 13px;
            left: 8px;
            width: 12px;
            height: 2px;
            content: "";
            background: var(--primary);
            transition: transform var(--ease);
        }

        .faq-icon::after {
            transform: rotate(90deg);
        }

        .faq-item.open .faq-icon::after {
            transform: rotate(0);
        }

        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 260ms ease;
        }

        .faq-item.open .faq-answer {
            grid-template-rows: 1fr;
        }

        .faq-answer-inner {
            overflow: hidden;
        }

        .faq-answer p {
            margin: 0;
            padding: 0 22px 21px;
            font-size: .93rem;
        }

        .cta {
            padding: 76px 0 94px;
        }

        .cta-panel {
            position: relative;
            display: grid;
            overflow: hidden;
            grid-template-columns: 1fr auto;
            align-items: center;
            gap: 35px;
            padding: 48px 52px;
            color: #fff;
            background: linear-gradient(120deg, #2457d6, #173c98);
            border-radius: var(--radius-lg);
            box-shadow: 0 24px 60px rgba(29, 67, 158, .24);
        }

        .cta-panel::before {
            position: absolute;
            top: -70px;
            right: 180px;
            width: 260px;
            height: 260px;
            content: "";
            border: 1px solid rgba(255,255,255,.15);
            border-radius: 50%;
            box-shadow: 0 0 0 46px rgba(255,255,255,.035), 0 0 0 92px rgba(255,255,255,.025);
        }

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

        .cta-copy h2 {
            margin-bottom: 10px;
            color: #fff;
        }

        .cta-copy p {
            max-width: 680px;
            margin: 0;
            color: rgba(255,255,255,.74);
        }

        .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 10px;
        }

        .cta-actions .btn:first-child {
            color: var(--primary-dark);
            background: #fff;
            border-color: #fff;
        }

        .cta-actions .btn:last-child {
            color: #fff;
            background: rgba(255,255,255,.09);
            border-color: rgba(255,255,255,.32);
        }

        .site-footer {
            padding: 62px 0 28px;
            background: #edf2f7;
            border-top: 1px solid var(--border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.45fr .65fr .65fr .9fr;
            gap: 46px;
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .footer-brand p {
            max-width: 430px;
            margin: 0;
            font-size: .88rem;
        }

        .footer-col h3 {
            margin-bottom: 17px;
            font-size: .9rem;
        }

        .footer-links {
            display: grid;
            gap: 10px;
            padding: 0;
            list-style: none;
        }

        .footer-links a {
            color: var(--muted);
            font-size: .86rem;
            transition: color var(--ease), transform var(--ease);
        }

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

        .footer-status {
            padding: 15px;
            background: rgba(255,255,255,.65);
            border: 1px solid var(--border);
            border-radius: 11px;
        }

        .footer-status strong {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
            font-size: .84rem;
        }

        .footer-status strong::before {
            width: 7px;
            height: 7px;
            content: "";
            background: var(--success);
            border-radius: 50%;
        }

        .footer-status span {
            display: block;
            color: var(--muted);
            font-size: .78rem;
            line-height: 1.6;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-top: 46px;
            padding-top: 22px;
            color: var(--light-text);
            border-top: 1px solid var(--border-strong);
            font-size: .77rem;
        }

        .back-top {
            color: var(--primary);
            font-weight: 750;
        }

        @media (max-width: 1200px) {
            .container {
                width: min(calc(100% - 36px), 1100px);
            }

            .hero-stage {
                padding: 48px;
            }

            .hero-content {
                width: 82%;
            }

            .hero-float {
                right: 28px;
                bottom: 26px;
            }

            .feature-rail {
                grid-template-columns: 1.15fr 1fr;
            }

            .feature-card:nth-child(4) {
                grid-column: auto;
            }

            .feature-card.feature-main {
                min-height: 518px;
            }

            .footer-grid {
                grid-template-columns: 1.25fr .65fr .65fr;
            }

            .footer-col:last-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 992px) {
            :root {
                --header-height: 68px;
            }

            .desktop-nav,
            .mega-wrap {
                display: none;
            }

            .nav-actions .btn-primary {
                min-height: 42px;
                padding: 8px 13px;
            }

            .menu-toggle {
                display: block;
            }

            .mobile-panel {
                position: fixed;
                z-index: 99;
                top: var(--header-height);
                right: 0;
                bottom: 0;
                display: block;
                width: min(390px, 92vw);
                padding: 22px;
                visibility: hidden;
                background: #fff;
                border-left: 1px solid var(--border);
                box-shadow: -18px 20px 50px rgba(29,53,91,.14);
                opacity: 0;
                transform: translateX(100%);
                transition: transform 240ms ease, opacity 240ms ease, visibility 240ms ease;
            }

            .mobile-panel.open {
                visibility: visible;
                opacity: 1;
                transform: translateX(0);
            }

            .mobile-nav {
                display: grid;
                gap: 8px;
            }

            .mobile-nav a {
                padding: 14px 15px;
                background: #f8faff;
                border: 1px solid var(--border);
                border-radius: 10px;
                font-weight: 750;
            }

            .mobile-nav a.active {
                color: var(--primary);
                background: var(--primary-soft);
                border-color: #bfd0f6;
            }

            .mobile-group-title {
                margin: 24px 0 10px;
                color: var(--muted);
                font-size: .77rem;
                font-weight: 800;
                letter-spacing: .07em;
            }

            .mobile-quick {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .mobile-quick a {
                padding: 13px;
                color: var(--primary-dark);
                background: var(--primary-soft);
                border-radius: 9px;
                font-size: .82rem;
                font-weight: 700;
            }

            .hero {
                padding-top: 34px;
            }

            .hero-stage {
                min-height: auto;
                padding: 38px;
            }

            .hero-topline {
                margin-bottom: 40px;
            }

            .hero-content {
                width: 100%;
            }

            .hero-index {
                max-width: none;
                margin-bottom: 210px;
            }

            .hero-float {
                right: 38px;
                bottom: 35px;
                left: 38px;
                width: auto;
            }

            .section {
                padding: 82px 0;
            }

            .section-head {
                grid-template-columns: 1fr;
                gap: 4px;
                margin-bottom: 38px;
            }

            .feature-rail {
                grid-template-columns: 1fr 1fr;
            }

            .feature-card.feature-main {
                grid-column: 1 / -1;
                grid-row: auto;
                min-height: 340px;
            }

            .feature-main .feature-number {
                margin-bottom: 55px;
            }

            .scene-layout,
            .security-grid,
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 38px;
            }

            .scene-intro {
                position: static;
            }

            .path-board {
                grid-template-columns: 1fr;
            }

            .path-side {
                grid-template-columns: 1fr 1fr;
            }

            .trust-inner {
                grid-template-columns: 1fr 1fr;
            }

            .content-layout {
                grid-template-columns: 1fr;
            }

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

            .access-card,
            .access-card.recommended {
                min-height: auto;
                margin-top: 0;
            }

            .cta-panel {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(calc(100% - 28px), 680px);
            }

            .logo {
                font-size: .86rem;
            }

            .logo-mark {
                width: 35px;
                height: 35px;
            }

            .nav-wrap {
                gap: 12px;
            }

            .nav-actions {
                gap: 7px;
            }

            .nav-actions .btn-primary {
                display: none;
            }

            .hero-stage {
                padding: 28px;
                border-radius: 18px;
            }

            .hero-topline {
                align-items: flex-start;
                margin-bottom: 35px;
            }

            .update-window {
                display: none;
            }

            .hero-actions .btn {
                flex: 1 1 190px;
            }

            .hero-index {
                grid-template-columns: 1fr;
                margin-bottom: 215px;
            }

            .index-cell {
                padding: 15px 17px;
            }

            .hero-float {
                right: 27px;
                bottom: 25px;
                left: 27px;
            }

            .section {
                padding: 66px 0;
            }

            .section-tight {
                padding: 52px 0;
            }

            .feature-rail {
                grid-template-columns: 1fr;
            }

            .feature-card.feature-main,
            .feature-card:nth-child(4) {
                grid-column: auto;
            }

            .feature-card,
            .feature-card.feature-main {
                min-height: 280px;
                padding: 25px;
            }

            .feature-number,
            .feature-main .feature-number {
                margin-bottom: 42px;
            }

            .scene-item {
                grid-template-columns: 54px 1fr;
                padding-right: 18px;
            }

            .scene-item .btn {
                grid-column: 2;
                justify-self: start;
            }

            .scene-list::before {
                left: 26px;
            }

            .scene-num {
                width: 52px;
                height: 52px;
            }

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

            .path-step:nth-child(2)::after {
                display: none;
            }

            .path-side {
                grid-template-columns: 1fr;
            }

            .trust-inner {
                grid-template-columns: 1fr;
            }

            .trust-point {
                padding-block: 6px;
            }

            .update-item {
                grid-template-columns: 56px 1fr;
                gap: 14px;
                padding: 17px;
            }

            .update-item .text-arrow {
                display: none;
            }

            .update-date {
                width: 52px;
                height: 52px;
            }

            .shield-visual {
                min-height: 320px;
            }

            .faq-layout {
                gap: 28px;
            }

            .cta-panel {
                padding: 38px 30px;
            }

            .cta-actions {
                flex-wrap: wrap;
            }

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

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

            .footer-col:last-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                width: min(calc(100% - 22px), 480px);
            }

            .logo-text {
                max-width: 154px;
                overflow: hidden;
                line-height: 1.15;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .hero {
                padding: 22px 0 56px;
            }

            .hero-stage {
                padding: 22px;
            }

            .promo-burst {
                width: 54px;
                height: 54px;
                font-size: .64rem;
            }

            .hero-lead {
                line-height: 1.75;
            }

            .hero-actions {
                display: grid;
            }

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

            .hero-index {
                margin-bottom: 230px;
            }

            .hero-float {
                right: 20px;
                bottom: 20px;
                left: 20px;
                padding: 17px;
            }

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

            .feature-card,
            .feature-card.feature-main {
                min-height: 250px;
            }

            .scene-item {
                grid-template-columns: 46px 1fr;
                gap: 12px;
            }

            .scene-num {
                width: 45px;
                height: 45px;
                border-width: 5px;
            }

            .scene-list::before {
                left: 22px;
            }

            .path-main {
                padding: 23px;
            }

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

            .path-step::after {
                display: none;
            }

            .access-card,
            .access-card.recommended {
                padding: 25px;
            }

            .visual-label.one {
                top: 25px;
                left: 18px;
            }

            .visual-label.two {
                right: 18px;
                bottom: 28px;
            }

            .faq-question {
                padding: 17px;
            }

            .faq-answer p {
                padding: 0 17px 18px;
            }

            .cta {
                padding: 58px 0 70px;
            }

            .cta-panel {
                padding: 31px 23px;
            }

            .cta-actions {
                display: grid;
            }

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

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

            .footer-brand,
            .footer-col:last-child {
                grid-column: auto;
            }

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

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

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

/* roulang page: category1 */
:root {
  --primary: #2457d6;
  --primary-dark: #173fa8;
  --primary-soft: #edf3ff;
  --cyan: #1b91ad;
  --cyan-soft: #eaf8fb;
  --warm: #f28a3a;
  --warm-soft: #fff3e8;
  --success: #16856a;
  --success-soft: #e9f8f3;
  --danger: #d84747;
  --danger-soft: #fff0f0;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-alt: #f0f4f9;
  --text: #15213a;
  --muted: #66738a;
  --light-text: #8c98ab;
  --border: #dfe6f0;
  --border-strong: #cbd6e5;
  --shadow-sm: 0 8px 24px rgba(29, 53, 91, .07);
  --shadow: 0 18px 48px rgba(30, 58, 105, .11);
  --shadow-hover: 0 24px 54px rgba(30, 68, 137, .15);
  --radius-sm: 9px;
  --radius: 15px;
  --radius-lg: 22px;
  --container: 1220px;
  --header-height: 76px;
  --ease: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(rgba(36, 87, 214, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 87, 214, .025) 1px, transparent 1px),
    var(--bg);
  background-size: 38px 38px;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

button,
a,
select {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
}

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

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

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -.03em;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(2.55rem, 5vw, 4rem);
  font-weight: 900;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 3.6vw, 2.75rem);
  font-weight: 850;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.22rem;
  font-weight: 800;
}

p {
  color: var(--muted);
}

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

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

.section {
  position: relative;
  padding: 104px 0;
}

.section-tight {
  padding: 74px 0;
}

.section-soft {
  background: rgba(237, 243, 255, .68);
  border-block: 1px solid rgba(203, 214, 229, .76);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .65fr);
  align-items: end;
  gap: 52px;
  margin-bottom: 46px;
}

.section-head p {
  margin-bottom: 4px;
  font-size: 1.03rem;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 15px;
  color: var(--primary);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .08em;
}

.section-kicker::before {
  width: 28px;
  height: 2px;
  content: "";
  background: var(--primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  padding: 4px 10px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border: 1px solid #d4e1ff;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 750;
  line-height: 1.2;
}

.badge::before {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  content: "";
  background: currentColor;
  border-radius: 50%;
}

.badge-cyan {
  color: #126f85;
  background: var(--cyan-soft);
  border-color: #c9eaf0;
}

.badge-warm {
  color: #a85218;
  background: var(--warm-soft);
  border-color: #f5d5b9;
}

.badge-success {
  color: var(--success);
  background: var(--success-soft);
  border-color: #c6eadf;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 19px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(25, 48, 87, .05);
  cursor: pointer;
  font-size: .94rem;
  font-weight: 750;
  transition: transform var(--ease), color var(--ease), background var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.btn:hover {
  border-color: #9fb4d4;
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible,
.nav-link:focus-visible,
.logo:focus-visible,
.mega-item:focus-visible,
.filter-chip:focus-visible,
.content-link:focus-visible,
.faq-question:focus-visible,
select:focus-visible,
.footer-links a:focus-visible,
.back-top:focus-visible {
  outline: 3px solid rgba(36, 87, 214, .28);
  outline-offset: 3px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  color: var(--light-text);
  background: var(--surface-alt);
  border-color: var(--border);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 10px 22px rgba(36, 87, 214, .22);
}

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

.btn-soft {
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-color: #ccdafa;
}

.btn-link {
  min-height: auto;
  padding: 6px 0;
  color: var(--primary);
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.btn-link:hover {
  color: var(--primary-dark);
  box-shadow: none;
}

.btn .arrow {
  transition: transform var(--ease);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* 导航 */
.site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  height: var(--header-height);
  background: rgba(247, 249, 252, .9);
  border-bottom: 1px solid rgba(203, 214, 229, .72);
  backdrop-filter: blur(16px);
  transition: box-shadow var(--ease), background var(--ease);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, .95);
  box-shadow: 0 10px 30px rgba(30, 58, 105, .09);
}

.nav-wrap {
  display: flex;
  height: 100%;
  align-items: center;
  gap: 34px;
}

.logo {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 900;
  letter-spacing: -.02em;
}

.logo-mark {
  position: relative;
  width: 35px;
  height: 35px;
  flex: 0 0 35px;
  background: var(--primary-soft);
  border: 2px solid var(--primary);
  border-radius: 10px;
}

.logo-mark::before,
.logo-mark::after {
  position: absolute;
  content: "";
  background: var(--primary);
}

.logo-mark::before {
  top: 7px;
  bottom: 7px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.logo-mark::after {
  top: 50%;
  right: 7px;
  left: 7px;
  height: 2px;
  transform: translateY(-50%);
}

.logo-mark span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  background: var(--warm);
  border: 2px solid #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
}

.logo-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  height: 100%;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  height: 100%;
  align-items: center;
  padding: 0 15px;
  color: var(--muted);
  font-size: .94rem;
  font-weight: 750;
  transition: color var(--ease);
}

.nav-link::after {
  position: absolute;
  right: 15px;
  bottom: -1px;
  left: 15px;
  height: 3px;
  content: "";
  background: var(--primary);
  border-radius: 3px 3px 0 0;
  opacity: 0;
  transform: scaleX(.35);
  transition: opacity var(--ease), transform var(--ease);
}

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

.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.mega-wrap {
  position: relative;
}

.mega-trigger {
  min-height: 44px;
  box-shadow: none;
}

.chevron {
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--ease);
}

.mega-trigger[aria-expanded="true"] .chevron {
  transform: rotate(225deg) translate(-1px, -1px);
}

.mega-menu {
  position: absolute;
  top: calc(100% + 15px);
  right: 0;
  width: min(590px, calc(100vw - 40px));
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--ease), transform var(--ease);
}

.mega-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mega-menu::before {
  position: absolute;
  top: -7px;
  right: 48px;
  width: 13px;
  height: 13px;
  content: "";
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  transform: rotate(45deg);
}

.mega-title {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .08em;
}

.mega-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mega-item {
  display: grid;
  gap: 3px;
  padding: 14px;
  background: #fafcff;
  border: 1px solid var(--border);
  border-radius: 11px;
  transition: transform var(--ease), background var(--ease), border-color var(--ease);
}

.mega-item strong {
  color: var(--text);
  font-size: .93rem;
}

.mega-item span {
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.55;
}

.mega-item:hover {
  background: var(--primary-soft);
  border-color: #b9cdf8;
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-panel {
  position: fixed;
  z-index: 999;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  width: min(390px, 100%);
  padding: 24px 20px 34px;
  overflow-y: auto;
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: -18px 20px 48px rgba(30, 58, 105, .15);
  transform: translateX(105%);
  transition: transform 240ms ease;
}

.mobile-panel.open {
  transform: translateX(0);
}

.mobile-nav {
  display: grid;
  gap: 8px;
}

.mobile-nav a {
  display: flex;
  min-height: 50px;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 750;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: #d4e1ff;
}

.mobile-group {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.mobile-group-title {
  margin-bottom: 10px;
  color: var(--light-text);
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .08em;
}

.mobile-quick {
  display: grid;
  gap: 9px;
}

.mobile-quick a {
  display: block;
  padding: 13px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 750;
}

.mobile-panel .btn-primary {
  width: 100%;
  margin-top: 20px;
}

/* 分类首屏 */
.category-hero {
  position: relative;
  overflow: hidden;
  padding: 56px 0 78px;
  background:
    radial-gradient(circle at 85% 15%, rgba(27, 145, 173, .12), transparent 26%),
    linear-gradient(135deg, rgba(237, 243, 255, .88), rgba(255, 255, 255, .72));
  border-bottom: 1px solid var(--border);
}

.category-hero::before {
  position: absolute;
  top: 36px;
  right: 6%;
  width: 340px;
  height: 340px;
  content: "";
  background:
    linear-gradient(var(--primary), var(--primary)) center / 1px 100% no-repeat,
    linear-gradient(90deg, var(--primary), var(--primary)) center / 100% 1px no-repeat;
  border: 1px solid rgba(36, 87, 214, .14);
  border-radius: 50%;
  opacity: .09;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: .88rem;
}

.breadcrumb a {
  color: var(--primary);
  font-weight: 700;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(380px, .72fr);
  align-items: center;
  gap: 72px;
  z-index: 1;
}

.hero-copy {
  max-width: 760px;
}

.hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 20px;
}

.hero-copy > p {
  max-width: 710px;
  margin-bottom: 30px;
  font-size: 1.08rem;
  line-height: 1.85;
}

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

.hero-index {
  position: relative;
  padding: 22px;
  background: rgba(255, 255, 255, .94);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-index::before,
.hero-index::after {
  position: absolute;
  width: 20px;
  height: 20px;
  content: "";
  pointer-events: none;
}

.hero-index::before {
  top: 10px;
  left: 10px;
  border-top: 2px solid var(--primary);
  border-left: 2px solid var(--primary);
}

.hero-index::after {
  right: 10px;
  bottom: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
}

.index-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 3px 3px 17px;
  border-bottom: 1px solid var(--border);
}

.index-header strong {
  font-size: .96rem;
}

.status-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--success);
  font-size: .78rem;
  font-weight: 800;
}

.status-live::before {
  width: 7px;
  height: 7px;
  content: "";
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--success-soft);
}

.region-matrix {
  display: grid;
  gap: 9px;
  margin-top: 16px;
}

.region-row {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 13px;
  padding: 13px;
  background: #fafcff;
  border: 1px solid var(--border);
  border-radius: 11px;
  transition: transform var(--ease), border-color var(--ease), background var(--ease);
}

.region-row:hover {
  background: var(--primary-soft);
  border-color: #b9cdf8;
  transform: translateX(3px);
}

.region-code {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--primary);
  background: #fff;
  border: 1px solid #cfddfb;
  border-radius: 9px;
  font-size: .75rem;
  font-weight: 900;
}

.region-row strong {
  display: block;
  font-size: .94rem;
}

.region-row small {
  display: block;
  color: var(--muted);
  font-size: .76rem;
}

.region-arrow {
  color: var(--primary);
  font-weight: 900;
}

.index-status {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.index-stat {
  padding: 11px 8px;
  text-align: center;
  background: var(--surface-alt);
  border-radius: 9px;
}

.index-stat strong,
.index-stat span {
  display: block;
}

.index-stat strong {
  color: var(--text);
  font-size: 1.05rem;
}

.index-stat span {
  color: var(--light-text);
  font-size: .7rem;
}

/* 分类主体 */
.directory-layout {
  display: grid;
  grid-template-columns: 274px minmax(0, 1fr);
  align-items: start;
  gap: 34px;
}

.filter-panel {
  position: sticky;
  top: 98px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.filter-panel h2 {
  margin-bottom: 8px;
  font-size: 1.24rem;
}

.filter-intro {
  margin-bottom: 22px;
  font-size: .88rem;
}

.filter-group {
  padding: 19px 0;
  border-top: 1px solid var(--border);
}

.filter-group-title {
  display: block;
  margin-bottom: 11px;
  color: var(--text);
  font-size: .82rem;
  font-weight: 850;
}

.filter-stack {
  display: grid;
  gap: 8px;
}

.filter-chip {
  display: flex;
  width: 100%;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  padding: 8px 11px;
  color: var(--muted);
  background: #fafcff;
  border: 1px solid var(--border);
  border-radius: 9px;
  cursor: pointer;
  font-size: .86rem;
  font-weight: 700;
  text-align: left;
  transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease);
}

.filter-chip span {
  display: inline-grid;
  min-width: 24px;
  height: 24px;
  place-items: center;
  padding: 0 6px;
  color: var(--light-text);
  background: var(--surface-alt);
  border-radius: 6px;
  font-size: .72rem;
}

.filter-chip:hover {
  color: var(--primary);
  border-color: #abc0e6;
  transform: translateX(2px);
}

.filter-chip.active,
.filter-chip[aria-pressed="true"] {
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-color: #adc3f4;
}

.filter-chip.active span,
.filter-chip[aria-pressed="true"] span {
  color: #fff;
  background: var(--primary);
}

.filter-chip:disabled {
  color: var(--light-text);
  opacity: .55;
  cursor: not-allowed;
  transform: none;
}

.filter-note {
  margin: 4px 0 0;
  padding: 12px;
  color: var(--muted);
  background: var(--surface-alt);
  border-radius: 9px;
  font-size: .76rem;
}

.results-area {
  min-width: 0;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
  padding: 5px 0 18px;
  border-bottom: 1px solid var(--border-strong);
}

.results-title strong {
  display: block;
  font-size: 1.12rem;
}

.results-title span {
  color: var(--muted);
  font-size: .82rem;
}

.sort-wrap {
  display: flex;
  align-items: center;
  gap: 9px;
}

.sort-wrap label {
  color: var(--muted);
  font-size: .82rem;
  font-weight: 700;
}

.sort-wrap select {
  min-height: 43px;
  padding: 8px 38px 8px 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  cursor: pointer;
}

.sort-wrap select:hover {
  border-color: #9fb4d4;
}

.content-list {
  display: grid;
  gap: 16px;
}

.content-card {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 170px;
  align-items: center;
  gap: 22px;
  min-height: 176px;
  padding: 25px 25px 25px 20px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.content-card::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  content: "";
  background: var(--primary);
}

.content-card[data-region="japan-korea"]::before {
  background: var(--cyan);
}

.content-card[data-region="domestic"]::before {
  background: var(--warm);
}

.content-card:hover {
  border-color: #afc2df;
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.content-card[hidden] {
  display: none;
}

.card-index {
  position: relative;
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  color: var(--primary);
  background:
    linear-gradient(90deg, transparent 48%, rgba(36, 87, 214, .1) 49%, rgba(36, 87, 214, .1) 51%, transparent 52%),
    linear-gradient(transparent 48%, rgba(36, 87, 214, .1) 49%, rgba(36, 87, 214, .1) 51%, transparent 52%),
    var(--primary-soft);
  border: 1px solid #ccdafa;
  border-radius: 12px;
  font-size: .82rem;
  font-weight: 900;
}

.card-index::after {
  position: absolute;
  width: 8px;
  height: 8px;
  content: "";
  background: var(--primary);
  border: 2px solid #fff;
  border-radius: 50%;
}

.card-copy {
  min-width: 0;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 10px;
}

.card-copy h3 {
  margin-bottom: 8px;
}

.card-copy p {
  display: -webkit-box;
  margin-bottom: 0;
  overflow: hidden;
  font-size: .92rem;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.card-action {
  display: grid;
  justify-items: end;
  gap: 15px;
  text-align: right;
}

.update-info {
  color: var(--light-text);
  font-size: .76rem;
}

.content-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: .9rem;
  font-weight: 800;
}

.content-link span {
  transition: transform var(--ease);
}

.content-link:hover {
  color: var(--primary-dark);
}

.content-link:hover span {
  transform: translateX(4px);
}

.empty-state {
  display: none;
  padding: 36px;
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}

.empty-state.show {
  display: block;
}

.empty-state strong {
  display: block;
  margin-bottom: 6px;
}

.mobile-filters {
  display: none;
  margin-bottom: 20px;
  overflow-x: auto;
  gap: 8px;
  scrollbar-width: none;
}

.mobile-filters::-webkit-scrollbar {
  display: none;
}

.mobile-filters .filter-chip {
  width: auto;
  min-width: max-content;
}

/* 地区比较 */
.compare-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(270px, .7fr) minmax(0, 1.3fr);
  gap: 48px;
  padding: 42px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.compare-intro {
  align-self: center;
}

.compare-intro p {
  margin-bottom: 24px;
}

.compare-board {
  display: grid;
  gap: 11px;
}

.compare-row {
  display: grid;
  grid-template-columns: 112px 1fr 98px;
  align-items: center;
  gap: 17px;
  padding: 17px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 11px;
}

.compare-region {
  font-weight: 850;
}

.compare-track {
  height: 8px;
  overflow: hidden;
  background: #e4eaf3;
  border-radius: 10px;
}

.compare-track span {
  display: block;
  width: var(--track-width);
  height: 100%;
  background: var(--primary);
  border-radius: inherit;
}

.compare-row:nth-child(2) .compare-track span {
  background: var(--cyan);
}

.compare-row:nth-child(3) .compare-track span {
  background: var(--warm);
}

.compare-state {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
  text-align: right;
}

/* 浏览流程 */
.path-grid {
  display: grid;
  grid-template-columns: minmax(260px, .66fr) minmax(0, 1.34fr);
  gap: 62px;
}

.path-heading {
  position: sticky;
  top: 110px;
  align-self: start;
}

.path-heading p {
  margin-bottom: 25px;
}

.path-list {
  position: relative;
  display: grid;
  gap: 18px;
}

.path-list::before {
  position: absolute;
  top: 38px;
  bottom: 38px;
  left: 31px;
  width: 2px;
  content: "";
  background: linear-gradient(var(--primary), var(--cyan), var(--warm));
  opacity: .3;
}

.path-item {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  align-items: center;
  gap: 19px;
  padding: 23px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.path-number {
  position: relative;
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  color: #fff;
  background: var(--primary);
  border: 6px solid var(--primary-soft);
  border-radius: 50%;
  font-size: .82rem;
  font-weight: 900;
  z-index: 1;
}

.path-item:nth-child(2) .path-number {
  background: var(--cyan);
  border-color: var(--cyan-soft);
}

.path-item:nth-child(3) .path-number {
  background: var(--warm);
  border-color: var(--warm-soft);
}

.path-copy h3 {
  margin-bottom: 6px;
}

.path-copy p {
  margin-bottom: 0;
  font-size: .9rem;
}

.path-status {
  color: var(--success);
  font-size: .78rem;
  font-weight: 800;
}

/* 近期更新 */
.latest-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.32fr) minmax(300px, .68fr);
  gap: 24px;
}

.latest-main,
.hot-index {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.latest-main {
  padding: 31px;
}

.latest-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 21px;
}

.latest-header h2,
.hot-index h2 {
  margin-bottom: 0;
  font-size: 1.55rem;
}

.update-list {
  display: grid;
}

.update-item {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 19px 0;
  border-top: 1px solid var(--border);
}

.update-date {
  color: var(--light-text);
  font-size: .78rem;
  font-weight: 750;
}

.update-copy strong {
  display: block;
  margin-bottom: 2px;
}

.update-copy span {
  color: var(--muted);
  font-size: .84rem;
}

.update-mark {
  color: var(--primary);
  font-size: .78rem;
  font-weight: 800;
}

.hot-index {
  padding: 28px;
}

.hot-index > p {
  margin: 8px 0 20px;
  font-size: .88rem;
}

.hot-links {
  display: grid;
  gap: 10px;
}

.hot-link {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  align-items: center;
  gap: 11px;
  padding: 13px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}

.hot-link:hover {
  background: var(--primary-soft);
  border-color: #b8caf0;
  transform: translateX(3px);
}

.hot-rank {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--primary);
  background: #fff;
  border-radius: 7px;
  font-size: .74rem;
  font-weight: 900;
}

.hot-link strong {
  font-size: .87rem;
}

.hot-link span:last-child {
  color: var(--primary);
}

/* FAQ */
.faq-layout {
  display: grid;
  grid-template-columns: minmax(260px, .64fr) minmax(0, 1.36fr);
  gap: 64px;
}

.faq-intro p {
  max-width: 390px;
}

.faq-list {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.faq-item + .faq-item {
  border-top: 1px solid var(--border);
}

.faq-question {
  display: flex;
  width: 100%;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 19px 23px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
  font-weight: 800;
  text-align: left;
  transition: color var(--ease), background var(--ease);
}

.faq-question:hover,
.faq-question[aria-expanded="true"] {
  color: var(--primary);
  background: #fbfcff;
}

.faq-icon {
  position: relative;
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  background: var(--primary-soft);
  border: 1px solid #cfddfb;
  border-radius: 7px;
}

.faq-icon::before,
.faq-icon::after {
  position: absolute;
  top: 50%;
  left: 50%;
  content: "";
  background: var(--primary);
  transform: translate(-50%, -50%);
  transition: transform var(--ease), opacity var(--ease);
}

.faq-icon::before {
  width: 10px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 10px;
}

.faq-question[aria-expanded="true"] .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 240ms ease;
}

.faq-answer > div {
  overflow: hidden;
}

.faq-answer p {
  margin: 0;
  padding: 0 23px 22px;
  font-size: .93rem;
}

.faq-item.open .faq-answer {
  grid-template-rows: 1fr;
}

/* CTA */
.category-cta {
  padding: 0 0 104px;
}

.cta-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 40px;
  padding: 47px 50px;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 20%, rgba(27, 145, 173, .16), transparent 25%),
    var(--primary-soft);
  border: 1px solid #c9d8fa;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.cta-panel::after {
  position: absolute;
  right: 29%;
  bottom: -85px;
  width: 180px;
  height: 180px;
  content: "";
  border: 1px solid rgba(36, 87, 214, .18);
  border-radius: 50%;
}

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

.cta-copy h2 {
  margin-bottom: 10px;
}

.cta-copy p {
  max-width: 700px;
  margin-bottom: 0;
}

.cta-actions {
  position: relative;
  display: flex;
  gap: 10px;
  z-index: 1;
}

/* 页脚 */
.site-footer {
  padding: 68px 0 24px;
  background: #eef3f9;
  border-top: 1px solid var(--border-strong);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .72fr .78fr 1fr;
  gap: 54px;
}

.footer-brand p {
  max-width: 390px;
  margin: 20px 0 0;
  font-size: .9rem;
}

.footer-col h3 {
  margin-bottom: 17px;
  font-size: .92rem;
  letter-spacing: 0;
}

.footer-links {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  color: var(--muted);
  font-size: .87rem;
  transition: color var(--ease), transform var(--ease);
}

.footer-links a:hover {
  display: inline-block;
  color: var(--primary);
  transform: translateX(3px);
}

.footer-status {
  padding: 16px;
  background: rgba(255, 255, 255, .65);
  border: 1px solid var(--border);
  border-radius: 11px;
}

.footer-status strong {
  display: block;
  margin-bottom: 5px;
  color: var(--success);
  font-size: .85rem;
}

.footer-status span {
  display: block;
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.65;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 46px;
  padding-top: 22px;
  color: var(--light-text);
  border-top: 1px solid var(--border-strong);
  font-size: .78rem;
}

.back-top {
  color: var(--primary);
  font-weight: 750;
}

.back-top:hover {
  color: var(--primary-dark);
}

/* 状态样式 */
.is-error {
  color: var(--danger) !important;
  background: var(--danger-soft) !important;
  border-color: #f1bcbc !important;
}

.is-success {
  color: var(--success) !important;
  background: var(--success-soft) !important;
  border-color: #bde4d8 !important;
}

[aria-selected="true"] {
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-color: #adc3f4;
}

/* 响应式 */
@media (max-width: 1200px) {
  .container {
    width: min(calc(100% - 48px), 1120px);
  }

  .nav-wrap {
    gap: 20px;
  }

  .nav-link {
    padding-inline: 11px;
  }

  .hero-grid {
    gap: 46px;
  }

  .directory-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 25px;
  }

  .content-card {
    grid-template-columns: 62px minmax(0, 1fr) 145px;
    gap: 17px;
  }

  .footer-grid {
    gap: 32px;
  }
}

@media (max-width: 992px) {
  :root {
    --header-height: 70px;
  }

  .desktop-nav,
  .mega-wrap {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-actions > .btn-primary {
    min-height: 44px;
    padding-inline: 15px;
  }

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

  .hero-copy {
    max-width: 800px;
  }

  .hero-index {
    max-width: 720px;
  }

  .section {
    padding: 82px 0;
  }

  .directory-layout {
    grid-template-columns: 1fr;
  }

  .filter-panel {
    display: none;
  }

  .mobile-filters {
    display: flex;
  }

  .compare-shell,
  .path-grid,
  .faq-layout {
    grid-template-columns: 1fr;
  }

  .path-heading {
    position: static;
  }

  .latest-layout {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1.35fr 1fr 1fr;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }

  .footer-status {
    max-width: 520px;
  }
}

@media (max-width: 768px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .section {
    padding: 68px 0;
  }

  .section-tight {
    padding: 58px 0;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 32px;
  }

  .logo-text {
    max-width: 220px;
  }

  .nav-actions > .btn-primary {
    display: none;
  }

  .category-hero {
    padding: 38px 0 62px;
  }

  .category-hero::before {
    width: 240px;
    height: 240px;
  }

  .breadcrumb {
    margin-bottom: 25px;
  }

  .hero-grid {
    gap: 38px;
  }

  h1 {
    font-size: clamp(2.25rem, 10vw, 3.15rem);
  }

  .content-card {
    grid-template-columns: 58px minmax(0, 1fr);
    min-height: auto;
    padding: 22px 20px 22px 18px;
  }

  .card-action {
    grid-column: 2;
    grid-template-columns: 1fr auto;
    align-items: center;
    justify-items: start;
    width: 100%;
    text-align: left;
  }

  .compare-shell {
    gap: 30px;
    padding: 30px;
  }

  .compare-row {
    grid-template-columns: 90px 1fr;
  }

  .compare-state {
    grid-column: 2;
    text-align: left;
  }

  .path-grid {
    gap: 32px;
  }

  .path-item {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .path-number {
    width: 58px;
    height: 58px;
  }

  .path-status {
    grid-column: 2;
  }

  .update-item {
    grid-template-columns: 90px minmax(0, 1fr);
  }

  .update-mark {
    grid-column: 2;
  }

  .cta-panel {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 38px 32px;
  }

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

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

  .footer-col:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 15px;
  }

  .container {
    width: min(calc(100% - 24px), var(--container));
  }

  .section {
    padding: 56px 0;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
  }

  .logo-text {
    max-width: 178px;
    font-size: .88rem;
  }

  .hero-copy > p {
    font-size: .98rem;
  }

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

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

  .hero-index {
    padding: 17px;
    border-radius: var(--radius);
  }

  .index-status {
    grid-template-columns: 1fr;
  }

  .index-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-inline: 12px;
    text-align: left;
  }

  .region-row {
    grid-template-columns: 38px 1fr auto;
    padding: 11px;
  }

  .region-code {
    width: 38px;
    height: 38px;
  }

  .results-toolbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .sort-wrap {
    width: 100%;
  }

  .sort-wrap select {
    flex: 1;
    min-width: 0;
  }

  .content-card {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .card-index {
    width: 50px;
    height: 50px;
  }

  .card-action {
    grid-column: 1;
  }

  .compare-shell {
    padding: 24px 18px;
  }

  .compare-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .compare-state {
    grid-column: 1;
  }

  .path-list::before {
    left: 25px;
  }

  .path-item {
    grid-template-columns: 50px 1fr;
    gap: 14px;
    padding: 18px;
  }

  .path-number {
    width: 50px;
    height: 50px;
  }

  .latest-main,
  .hot-index {
    padding: 22px 18px;
  }

  .latest-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .update-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .update-mark {
    grid-column: 1;
  }

  .faq-layout {
    gap: 28px;
  }

  .faq-question {
    min-height: 68px;
    padding: 17px;
  }

  .faq-answer p {
    padding: 0 17px 19px;
  }

  .category-cta {
    padding-bottom: 66px;
  }

  .cta-panel {
    padding: 30px 21px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-brand,
  .footer-col:last-child {
    grid-column: 1;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

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

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