/* roulang page: index */
:root {
            --ink: #17181b;
            --ink-soft: #26272b;
            --coral: #ff6948;
            --coral-dark: #e94f32;
            --coral-pale: #fff0eb;
            --mint: #22a88a;
            --mint-dark: #147b67;
            --mint-pale: #e8f7f3;
            --cream: #f7f3ec;
            --cream-deep: #eee8dd;
            --white: #ffffff;
            --text: #36373b;
            --muted: #5d5e62;
            --light-muted: #85868a;
            --border: #ded9d1;
            --warning: #f1b94b;
            --warning-pale: #fff7df;
            --error: #c83d32;
            --success: #168469;
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 8px 24px rgba(23, 24, 27, .06);
            --shadow-md: 0 18px 46px rgba(23, 24, 27, .10);
            --shadow-dark: 0 22px 58px rgba(0, 0, 0, .22);
            --container: 1240px;
            --ease: 220ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            background: var(--cream);
        }

        body {
            margin: 0;
            overflow-x: hidden;
            color: var(--text);
            background:
                radial-gradient(circle at 90% 4%, rgba(255, 105, 72, .08), transparent 26rem),
                var(--cream);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }

        body.menu-open {
            overflow: hidden;
        }

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

        h1, h2, h3 {
            color: var(--ink);
            letter-spacing: -.035em;
        }

        h1 {
            margin-bottom: 24px;
            font-size: clamp(2.25rem, 5vw, 3.65rem);
            line-height: 1.13;
            font-weight: 800;
        }

        h2 {
            margin-bottom: 18px;
            font-size: clamp(2rem, 4vw, 2.55rem);
            line-height: 1.24;
            font-weight: 800;
        }

        h3 {
            margin-bottom: 12px;
            font-size: 1.35rem;
            line-height: 1.4;
            font-weight: 750;
        }

        p {
            margin-bottom: 18px;
        }

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

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

        button {
            cursor: pointer;
        }

        button:disabled, input:disabled {
            cursor: not-allowed;
            opacity: .58;
        }

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

        ::selection {
            color: var(--white);
            background: var(--coral);
        }

        :focus-visible {
            outline: 3px solid rgba(34, 168, 138, .5);
            outline-offset: 3px;
        }

        [id] {
            scroll-margin-top: 112px;
        }

        .grid-container {
            width: min(100% - 40px, var(--container));
            max-width: var(--container);
        }

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

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

        .section-heading {
            max-width: 760px;
            margin-bottom: 42px;
        }

        .section-heading p {
            max-width: 680px;
            margin-bottom: 0;
            color: var(--muted);
            font-size: 1.08rem;
        }

        .eyebrow,
        .badge {
            display: inline-flex;
            align-items: center;
            min-height: 30px;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: .78rem;
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: .02em;
        }

        .eyebrow {
            gap: 8px;
            margin-bottom: 18px;
            color: var(--ink);
            background: var(--white);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .eyebrow::before {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--coral);
            content: "";
        }

        .badge-keyword {
            color: #9d361f;
            background: var(--coral-pale);
        }

        .badge-status {
            color: var(--mint-dark);
            background: var(--mint-pale);
        }

        .badge-time {
            color: var(--ink);
            background: var(--warning-pale);
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            margin: 0;
            padding: 13px 23px;
            border: 1px solid transparent;
            border-radius: 999px;
            font-size: .96rem;
            font-weight: 750;
            line-height: 1.2;
            transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
        }

        .button.primary {
            color: var(--white);
            background: var(--coral);
            box-shadow: 0 10px 24px rgba(255, 105, 72, .24);
        }

        .button.primary:hover,
        .button.primary:focus {
            color: var(--white);
            background: var(--coral-dark);
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(255, 105, 72, .30);
        }

        .button.secondary {
            color: var(--ink);
            background: transparent;
            border-color: var(--ink);
        }

        .button.secondary:hover,
        .button.secondary:focus {
            color: var(--white);
            background: var(--ink);
            transform: translateY(-2px);
        }

        .button.light {
            color: var(--ink);
            background: var(--white);
        }

        .button.light:hover {
            background: var(--cream);
            transform: translateY(-2px);
        }

        .button:active {
            transform: translateY(0) scale(.985) !important;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            min-height: 44px;
            color: var(--ink);
            font-weight: 750;
        }

        .text-link::after {
            content: "→";
            transition: transform var(--ease);
        }

        .text-link:hover {
            color: var(--coral-dark);
        }

        .text-link:hover::after {
            transform: translateX(4px);
        }

        /* 导航 */
        .site-header {
            position: fixed;
            z-index: 1000;
            top: 18px;
            right: 0;
            left: 0;
            pointer-events: none;
        }

        .nav-shell {
            display: flex;
            align-items: center;
            min-height: 72px;
            padding: 8px 10px 8px 18px;
            border: 1px solid rgba(222, 217, 209, .9);
            border-radius: 999px;
            background: rgba(255, 255, 255, .94);
            box-shadow: 0 12px 38px rgba(23, 24, 27, .11);
            backdrop-filter: blur(14px);
            pointer-events: auto;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 11px;
            min-width: 285px;
            color: var(--ink);
            font-weight: 850;
            line-height: 1.18;
        }

        .brand-mark {
            position: relative;
            flex: 0 0 40px;
            width: 40px;
            height: 40px;
            overflow: hidden;
            border-radius: 13px;
            color: var(--white);
            background: var(--ink);
        }

        .brand-mark::before {
            position: absolute;
            top: 10px;
            left: 11px;
            width: 18px;
            height: 18px;
            border: 4px solid var(--coral);
            border-left-color: var(--mint);
            border-radius: 50%;
            content: "";
        }

        .brand-main {
            display: block;
            font-size: .93rem;
        }

        .brand-sub {
            display: block;
            color: var(--muted);
            font-size: .68rem;
            font-weight: 650;
            letter-spacing: .08em;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            flex: 1;
            gap: 4px;
            margin: 0 20px;
        }

        .desktop-nav a {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 10px 17px;
            border-radius: 999px;
            color: var(--muted);
            font-size: .93rem;
            font-weight: 700;
        }

        .desktop-nav a:hover {
            color: var(--ink);
            background: var(--cream);
        }

        .desktop-nav a.active {
            color: var(--white);
            background: var(--ink);
        }

        .nav-action {
            min-width: 136px;
        }

        .menu-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            flex: 0 0 46px;
            width: 46px;
            height: 46px;
            padding: 0;
            border: 0;
            border-radius: 50%;
            color: var(--white);
            background: var(--ink);
        }

        .menu-toggle-lines,
        .menu-toggle-lines::before,
        .menu-toggle-lines::after {
            display: block;
            width: 19px;
            height: 2px;
            border-radius: 3px;
            background: currentColor;
            transition: transform var(--ease), opacity var(--ease);
        }

        .menu-toggle-lines {
            position: relative;
        }

        .menu-toggle-lines::before,
        .menu-toggle-lines::after {
            position: absolute;
            left: 0;
            content: "";
        }

        .menu-toggle-lines::before { top: -6px; }
        .menu-toggle-lines::after { top: 6px; }

        .menu-toggle[aria-expanded="true"] .menu-toggle-lines {
            background: transparent;
        }

        .menu-toggle[aria-expanded="true"] .menu-toggle-lines::before {
            top: 0;
            transform: rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"] .menu-toggle-lines::after {
            top: 0;
            transform: rotate(-45deg);
        }

        .mobile-panel {
            display: none;
            margin-top: 10px;
            padding: 14px;
            border: 1px solid var(--border);
            border-radius: 24px;
            background: var(--white);
            box-shadow: var(--shadow-md);
            pointer-events: auto;
        }

        .mobile-panel.open {
            display: block;
        }

        .mobile-panel a:not(.button) {
            display: flex;
            align-items: center;
            min-height: 48px;
            padding: 10px 14px;
            border-radius: 12px;
            color: var(--muted);
            font-weight: 700;
        }

        .mobile-panel a.active,
        .mobile-panel a:not(.button):hover {
            color: var(--ink);
            background: var(--cream);
        }

        .mobile-panel .button {
            width: 100%;
            margin-top: 10px;
        }

        /* Hero 与指标 */
        .hero {
            min-height: 810px;
            padding: 142px 0 60px;
            color: var(--white);
            background:
                radial-gradient(circle at 83% 24%, rgba(255, 105, 72, .29), transparent 25rem),
                radial-gradient(circle at 18% 90%, rgba(34, 168, 138, .17), transparent 22rem),
                var(--ink);
        }

        .hero-stage {
            position: relative;
            overflow: hidden;
            padding: 64px 64px 34px;
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-xl);
            background:
                linear-gradient(125deg, rgba(255,255,255,.045), transparent 44%),
                var(--ink-soft);
            box-shadow: var(--shadow-dark);
        }

        .hero-stage::after {
            position: absolute;
            top: -160px;
            right: -120px;
            width: 360px;
            height: 360px;
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: 50%;
            box-shadow:
                0 0 0 46px rgba(255,255,255,.025),
                0 0 0 92px rgba(255,255,255,.018);
            content: "";
            pointer-events: none;
        }

        .hero-copy {
            position: relative;
            z-index: 2;
            max-width: 920px;
        }

        .hero .eyebrow {
            color: var(--white);
            border-color: rgba(255,255,255,.16);
            background: rgba(255,255,255,.08);
            box-shadow: none;
        }

        .hero h1 {
            max-width: 900px;
            color: var(--white);
        }

        .hero-lead {
            max-width: 760px;
            margin-bottom: 28px;
            color: rgba(255,255,255,.74);
            font-size: clamp(1.05rem, 2vw, 1.2rem);
            line-height: 1.8;
        }

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

        .burst-note {
            position: absolute;
            z-index: 3;
            top: 42px;
            right: 52px;
            display: grid;
            width: 112px;
            height: 112px;
            place-items: center;
            padding: 18px;
            border-radius: 34% 66% 49% 51% / 58% 44% 56% 42%;
            color: var(--ink);
            background: var(--warning);
            font-size: .84rem;
            font-weight: 850;
            line-height: 1.35;
            text-align: center;
            transform: rotate(7deg);
            box-shadow: 0 14px 30px rgba(0,0,0,.22);
        }

        .metrics-board {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr repeat(4, 1fr);
            gap: 1px;
            overflow: hidden;
            border: 1px solid rgba(255,255,255,.12);
            border-radius: 22px;
            background: rgba(255,255,255,.12);
        }

        .metric {
            min-height: 150px;
            padding: 22px;
            background: rgba(23,24,27,.74);
        }

        .metric-label {
            display: block;
            margin-bottom: 14px;
            color: rgba(255,255,255,.55);
            font-size: .78rem;
            font-weight: 700;
        }

        .metric-value {
            display: block;
            margin-bottom: 7px;
            color: var(--white);
            font-size: 1.55rem;
            font-weight: 850;
            line-height: 1.2;
        }

        .metric small {
            color: rgba(255,255,255,.62);
            font-size: .78rem;
            line-height: 1.55;
        }

        .time-dial {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .dial {
            display: grid;
            flex: 0 0 72px;
            width: 72px;
            height: 72px;
            place-items: center;
            border-radius: 50%;
            background: conic-gradient(var(--coral) 0 75%, rgba(255,255,255,.12) 75% 100%);
        }

        .dial::before {
            display: grid;
            width: 56px;
            height: 56px;
            place-items: center;
            border-radius: 50%;
            color: var(--white);
            background: var(--ink);
            font-size: .78rem;
            font-weight: 800;
            content: "10分";
        }

        .mini-track {
            height: 6px;
            margin-top: 18px;
            overflow: hidden;
            border-radius: 999px;
            background: rgba(255,255,255,.12);
        }

        .mini-track span {
            display: block;
            width: var(--track, 70%);
            height: 100%;
            border-radius: inherit;
            background: var(--mint);
        }

        .index-strip {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 18px;
            margin-top: 18px;
            padding: 15px 18px;
            overflow-x: auto;
            border-radius: 15px;
            color: rgba(255,255,255,.66);
            background: rgba(255,255,255,.055);
            scrollbar-width: none;
            white-space: nowrap;
            font-size: .83rem;
        }

        .index-strip::-webkit-scrollbar {
            display: none;
        }

        .index-strip strong {
            color: var(--white);
        }

        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            margin-right: 7px;
            border-radius: 50%;
            background: var(--mint);
        }

        /* 卖点三连 */
        .benefit-rail {
            margin-top: -1px;
            padding: 32px 0;
            border-bottom: 1px solid var(--border);
            background: var(--white);
        }

        .benefit-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            min-height: 96px;
            padding: 18px 22px;
            border-right: 1px solid var(--border);
        }

        .benefit-item.last {
            border-right: 0;
        }

        .benefit-icon {
            display: grid;
            flex: 0 0 44px;
            width: 44px;
            height: 44px;
            place-items: center;
            border-radius: 14px;
            color: var(--coral-dark);
            background: var(--coral-pale);
            font-weight: 900;
        }

        .benefit-item:nth-child(2) .benefit-icon {
            color: var(--mint-dark);
            background: var(--mint-pale);
        }

        .benefit-item:nth-child(3) .benefit-icon {
            color: #876019;
            background: var(--warning-pale);
        }

        .benefit-item strong {
            display: block;
            margin-bottom: 3px;
            color: var(--ink);
            font-size: 1.03rem;
        }

        .benefit-item p {
            margin: 0;
            color: var(--muted);
            font-size: .88rem;
            line-height: 1.65;
        }

        /* Bento */
        .bento-grid {
            display: grid;
            grid-template-columns: 1.15fr .85fr .85fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }

        .feature-card {
            position: relative;
            min-height: 290px;
            overflow: hidden;
            padding: 30px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--white);
            box-shadow: var(--shadow-sm);
            transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
        }

        .feature-card:hover {
            border-color: rgba(255,105,72,.48);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .feature-card.main-card {
            grid-row: span 2;
            min-height: 600px;
            color: var(--white);
            border-color: var(--ink);
            background: var(--ink);
        }

        .feature-card.wide-card {
            grid-column: span 2;
            min-height: 250px;
        }

        .feature-card h3 {
            margin-top: 18px;
        }

        .feature-card.main-card h3 {
            color: var(--white);
            font-size: 1.85rem;
        }

        .feature-card p {
            max-width: 520px;
            color: var(--muted);
        }

        .feature-card.main-card p {
            color: rgba(255,255,255,.68);
        }

        .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 20px 0 10px;
        }

        .visual-track {
            position: absolute;
            right: 28px;
            bottom: 28px;
            left: 28px;
            min-height: 220px;
            padding: 24px;
            border: 1px solid rgba(255,255,255,.12);
            border-radius: 20px;
            background:
                repeating-linear-gradient(90deg, transparent 0 49px, rgba(255,255,255,.05) 50px),
                rgba(255,255,255,.055);
        }

        .track-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 25px;
            color: rgba(255,255,255,.65);
            font-size: .78rem;
        }

        .track-line {
            position: relative;
            height: 10px;
            margin: 26px 0;
            border-radius: 999px;
            background: rgba(255,255,255,.12);
        }

        .track-line::before {
            display: block;
            width: 68%;
            height: 100%;
            border-radius: inherit;
            background: var(--coral);
            content: "";
        }

        .track-line::after {
            position: absolute;
            top: 50%;
            left: 68%;
            width: 22px;
            height: 22px;
            border: 5px solid var(--ink);
            border-radius: 50%;
            background: var(--white);
            content: "";
            transform: translate(-50%, -50%);
        }

        .track-labels {
            display: flex;
            justify-content: space-between;
            color: rgba(255,255,255,.48);
            font-size: .72rem;
        }

        .abstract-number {
            position: absolute;
            right: 24px;
            bottom: 5px;
            color: rgba(23,24,27,.055);
            font-size: 8rem;
            font-weight: 900;
            line-height: 1;
        }

        .wide-layout {
            display: grid;
            grid-template-columns: 1fr 210px;
            align-items: center;
            gap: 28px;
        }

        .clarity-stack {
            display: grid;
            gap: 10px;
        }

        .clarity-stack span {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 42px;
            padding: 8px 13px;
            border-radius: 12px;
            color: var(--muted);
            background: var(--cream);
            font-size: .8rem;
            font-weight: 700;
        }

        .clarity-stack i {
            width: 40%;
            height: 5px;
            border-radius: 99px;
            background: var(--mint);
        }

        /* 场景演示 */
        .scene-section {
            background: var(--cream-deep);
        }

        .scene-shell {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 22px;
            align-items: stretch;
        }

        .scene-intro {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 36px;
            border-radius: var(--radius-lg);
            color: var(--white);
            background: var(--ink);
        }

        .scene-intro h2 {
            color: var(--white);
        }

        .scene-intro p {
            color: rgba(255,255,255,.67);
        }

        .ten-minute-seal {
            display: inline-grid;
            width: 126px;
            height: 126px;
            place-items: center;
            margin-top: 28px;
            border: 1px solid rgba(255,255,255,.18);
            border-radius: 28px;
            color: var(--warning);
            font-size: 2rem;
            font-weight: 900;
            transform: rotate(-3deg);
        }

        .steps-panel {
            padding: 36px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--white);
            box-shadow: var(--shadow-sm);
        }

        .step-row {
            display: grid;
            grid-template-columns: 58px 1fr auto;
            gap: 18px;
            align-items: center;
            padding: 22px 0;
            border-bottom: 1px solid var(--border);
        }

        .step-row:last-child {
            border-bottom: 0;
        }

        .step-no {
            display: grid;
            width: 50px;
            height: 50px;
            place-items: center;
            border-radius: 16px;
            color: var(--white);
            background: var(--coral);
            font-size: .84rem;
            font-weight: 850;
        }

        .step-row:nth-child(2) .step-no {
            background: var(--mint);
        }

        .step-row:nth-child(3) .step-no {
            background: var(--ink);
        }

        .step-row h3 {
            margin-bottom: 4px;
            font-size: 1.08rem;
        }

        .step-row p {
            margin: 0;
            color: var(--muted);
            font-size: .88rem;
        }

        .step-state {
            color: var(--mint-dark);
            font-size: .77rem;
            font-weight: 750;
            white-space: nowrap;
        }

        /* 对比 */
        .comparison-wrap {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 64px 1fr;
            align-items: stretch;
        }

        .compare-card {
            padding: 34px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--white);
            box-shadow: var(--shadow-sm);
        }

        .compare-card.highlight {
            color: var(--white);
            border-color: var(--ink);
            background: var(--ink);
            box-shadow: var(--shadow-dark);
        }

        .compare-card.highlight h3 {
            color: var(--white);
        }

        .compare-card > p {
            color: var(--muted);
        }

        .compare-card.highlight > p {
            color: rgba(255,255,255,.64);
        }

        .compare-divider {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .compare-divider span {
            display: grid;
            z-index: 2;
            width: 48px;
            height: 48px;
            place-items: center;
            border: 1px solid var(--border);
            border-radius: 50%;
            color: var(--coral-dark);
            background: var(--cream);
            font-size: .75rem;
            font-weight: 900;
        }

        .compare-list {
            margin: 24px 0 0;
            list-style: none;
        }

        .compare-list li {
            display: grid;
            grid-template-columns: 24px 1fr auto;
            gap: 10px;
            align-items: start;
            padding: 15px 0;
            border-bottom: 1px solid var(--border);
        }

        .highlight .compare-list li {
            border-bottom-color: rgba(255,255,255,.12);
        }

        .compare-list li:last-child {
            border-bottom: 0;
        }

        .check-icon,
        .minus-icon {
            display: grid;
            width: 22px;
            height: 22px;
            place-items: center;
            margin-top: 2px;
            border-radius: 50%;
            font-size: .7rem;
            font-style: normal;
            font-weight: 900;
        }

        .check-icon {
            color: var(--white);
            background: var(--mint);
        }

        .minus-icon {
            color: var(--muted);
            background: var(--cream-deep);
        }

        .compare-list strong {
            font-size: .93rem;
        }

        .compare-list small {
            color: var(--light-muted);
            font-size: .75rem;
            white-space: nowrap;
        }

        .highlight .compare-list small {
            color: rgba(255,255,255,.5);
        }

        /* 信息列表 */
        .updates-section {
            background: var(--white);
        }

        .updates-layout {
            display: grid;
            grid-template-columns: 1.3fr .7fr;
            gap: 22px;
        }

        .updates-list,
        .recommend-panel {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--cream);
        }

        .updates-list {
            padding: 12px 30px;
        }

        .update-item {
            display: grid;
            grid-template-columns: 86px 1fr auto;
            gap: 20px;
            align-items: center;
            min-height: 112px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .update-no {
            color: var(--coral);
            font-size: 1.35rem;
            font-weight: 900;
            letter-spacing: -.04em;
        }

        .update-item h3 {
            margin-bottom: 4px;
            font-size: 1.06rem;
        }

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

        .update-item a {
            min-width: 44px;
            color: var(--ink);
            font-weight: 800;
        }

        .update-item a:hover {
            color: var(--coral-dark);
            transform: translateX(3px);
        }

        .recommend-panel {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 32px;
            color: var(--white);
            border-color: var(--ink);
            background:
                radial-gradient(circle at 100% 0, rgba(255,105,72,.32), transparent 16rem),
                var(--ink);
        }

        .recommend-panel h3 {
            color: var(--white);
            font-size: 1.55rem;
        }

        .recommend-panel p {
            color: rgba(255,255,255,.65);
        }

        .recommend-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 22px 0;
        }

        .recommend-tags span {
            padding: 7px 11px;
            border: 1px solid rgba(255,255,255,.14);
            border-radius: 999px;
            color: rgba(255,255,255,.72);
            font-size: .76rem;
        }

        /* FAQ */
        .faq-layout {
            display: grid;
            grid-template-columns: .72fr 1.28fr;
            gap: 56px;
        }

        .faq-note {
            position: sticky;
            top: 120px;
            align-self: start;
        }

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

        .accordion {
            margin: 0;
            border: 0;
            background: transparent;
        }

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

        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            padding: 20px 62px 20px 24px;
            border: 0 !important;
            color: var(--ink);
            font-size: 1.06rem;
            font-weight: 750;
            line-height: 1.5;
        }

        .accordion-title:hover,
        .accordion-title:focus {
            color: var(--coral-dark);
            background: var(--coral-pale);
        }

        .accordion-title::before {
            right: 24px;
            margin-top: -10px;
            color: var(--coral);
            font-size: 1.4rem;
        }

        .accordion-content {
            padding: 0 24px 24px;
            border: 0;
            color: var(--muted);
            background: var(--white);
            line-height: 1.8;
        }

        .accordion-content p {
            margin: 0;
        }

        /* 表单 */
        .contact-section {
            padding-top: 34px;
            padding-bottom: 110px;
        }

        .contact-panel {
            position: relative;
            overflow: hidden;
            padding: 54px;
            border-radius: var(--radius-xl);
            color: var(--white);
            background:
                radial-gradient(circle at 92% 8%, rgba(255,105,72,.32), transparent 22rem),
                var(--ink);
            box-shadow: var(--shadow-dark);
        }

        .contact-panel::after {
            position: absolute;
            right: -90px;
            bottom: -100px;
            width: 290px;
            height: 290px;
            border: 1px solid rgba(255,255,255,.1);
            border-radius: 50%;
            content: "";
        }

        .contact-copy {
            position: relative;
            z-index: 2;
            max-width: 470px;
            padding-right: 36px;
        }

        .contact-copy h2 {
            color: var(--white);
        }

        .contact-copy > p {
            color: rgba(255,255,255,.68);
        }

        .privacy-points {
            margin: 28px 0 0;
            list-style: none;
        }

        .privacy-points li {
            display: flex;
            gap: 10px;
            margin-bottom: 12px;
            color: rgba(255,255,255,.72);
            font-size: .88rem;
        }

        .privacy-points li::before {
            color: var(--mint);
            font-weight: 900;
            content: "✓";
        }

        .contact-form {
            position: relative;
            z-index: 2;
            padding: 30px;
            border-radius: 24px;
            color: var(--text);
            background: var(--white);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

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

        label {
            display: block;
            margin-bottom: 8px;
            color: var(--ink);
            font-size: .88rem;
            font-weight: 750;
        }

        .required {
            color: var(--error);
        }

        input[type="text"],
        input[type="email"],
        input[type="tel"],
        select,
        textarea {
            width: 100%;
            height: 50px;
            margin: 0;
            padding: 11px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text);
            background: var(--white);
            box-shadow: none;
            transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
        }

        textarea {
            min-height: 112px;
            resize: vertical;
        }

        input::placeholder,
        textarea::placeholder {
            color: #9a9a9d;
        }

        input:hover,
        select:hover,
        textarea:hover {
            border-color: #bdb6ac;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--mint);
            background: var(--white);
            box-shadow: 0 0 0 3px rgba(34,168,138,.15);
        }

        input.is-invalid,
        select.is-invalid,
        textarea.is-invalid {
            border-color: var(--error);
            background: #fff8f7;
        }

        input.is-valid,
        select.is-valid,
        textarea.is-valid {
            border-color: var(--success);
            background: #f7fffc;
        }

        .help-text,
        .field-error {
            display: block;
            margin-top: 6px;
            color: var(--light-muted);
            font-size: .74rem;
            font-style: normal;
            line-height: 1.55;
        }

        .field-error {
            display: none;
            color: var(--error);
        }

        .field-error.show {
            display: block;
        }

        .checkbox-line {
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .checkbox-line input {
            flex: 0 0 18px;
            width: 18px;
            height: 18px;
            margin: 4px 0 0;
            accent-color: var(--coral);
        }

        .checkbox-line label {
            margin: 0;
            color: var(--muted);
            font-weight: 500;
            line-height: 1.65;
        }

        .form-actions {
            display: flex;
            align-items: center;
            gap: 18px;
            margin-top: 22px;
        }

        .form-actions small {
            max-width: 300px;
            color: var(--light-muted);
            line-height: 1.55;
        }

        .form-message {
            display: none;
            margin-top: 16px;
            padding: 12px 14px;
            border-radius: 10px;
            font-size: .84rem;
        }

        .form-message.success {
            display: block;
            color: var(--success);
            background: var(--mint-pale);
        }

        .form-message.error {
            display: block;
            color: var(--error);
            background: #fff0ee;
        }

        /* 页脚 */
        .site-footer {
            padding: 70px 0 22px;
            color: rgba(255,255,255,.7);
            background: var(--ink);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 80px;
            padding-bottom: 46px;
        }

        .footer-brand .brand {
            max-width: 390px;
            color: var(--white);
        }

        .footer-brand .brand-mark {
            border: 1px solid rgba(255,255,255,.14);
            background: rgba(255,255,255,.06);
        }

        .footer-brand .brand-sub {
            color: rgba(255,255,255,.48);
        }

        .footer-brand p {
            max-width: 580px;
            margin: 22px 0 0;
            color: rgba(255,255,255,.56);
            font-size: .9rem;
        }

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

        .footer-group h3 {
            margin-bottom: 15px;
            color: var(--white);
            font-size: .94rem;
            letter-spacing: 0;
        }

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

        .footer-links li {
            margin-bottom: 9px;
        }

        .footer-links a {
            display: inline-flex;
            min-height: 34px;
            align-items: center;
            color: rgba(255,255,255,.58);
            font-size: .86rem;
        }

        .footer-links a:hover {
            color: var(--coral);
            transform: translateX(3px);
        }

        .footer-note {
            color: rgba(255,255,255,.54);
            font-size: .82rem;
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            padding-top: 22px;
            border-top: 1px solid rgba(255,255,255,.1);
            color: rgba(255,255,255,.4);
            font-size: .78rem;
        }

        .footer-bottom a {
            color: rgba(255,255,255,.52);
        }

        .footer-bottom a:hover {
            color: var(--white);
        }

        /* 平板 */
        @media (max-width: 1023px) {
            .section {
                padding: 78px 0;
            }

            .brand {
                min-width: auto;
            }

            .desktop-nav {
                margin: 0 8px;
            }

            .desktop-nav a {
                padding-right: 11px;
                padding-left: 11px;
                font-size: .86rem;
            }

            .nav-action {
                min-width: 116px;
                padding-right: 16px;
                padding-left: 16px;
            }

            .hero {
                min-height: auto;
            }

            .hero-stage {
                padding: 54px 38px 30px;
            }

            .burst-note {
                top: 28px;
                right: 30px;
                width: 94px;
                height: 94px;
                font-size: .76rem;
            }

            .hero-copy {
                padding-right: 74px;
            }

            .metrics-board {
                grid-template-columns: repeat(3, 1fr);
            }

            .metric:first-child {
                grid-column: span 2;
            }

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

            .feature-card.main-card {
                grid-column: span 2;
                grid-row: auto;
                min-height: 540px;
            }

            .feature-card.wide-card {
                grid-column: span 2;
            }

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

            .faq-note {
                position: static;
            }

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

            .contact-panel {
                padding: 40px;
            }

            .contact-copy {
                max-width: none;
                margin-bottom: 32px;
                padding-right: 0;
            }

            .footer-top {
                gap: 44px;
            }
        }

        /* 手机 */
        @media (max-width: 767px) {
            .grid-container {
                width: min(100% - 28px, var(--container));
            }

            .section {
                padding: 58px 0;
            }

            .section-compact {
                padding: 46px 0;
            }

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

            .section-heading p {
                font-size: 1rem;
            }

            .site-header {
                top: 10px;
            }

            .nav-shell {
                min-height: 62px;
                padding: 7px 8px 7px 13px;
            }

            .brand-mark {
                flex-basis: 36px;
                width: 36px;
                height: 36px;
                border-radius: 11px;
            }

            .brand-mark::before {
                top: 9px;
                left: 9px;
            }

            .brand-main {
                max-width: 210px;
                overflow: hidden;
                font-size: .79rem;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .brand-sub {
                font-size: .61rem;
            }

            .desktop-nav,
            .nav-action {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .hero {
                padding: 98px 0 36px;
            }

            .hero-stage {
                padding: 30px 20px 20px;
                border-radius: 25px;
            }

            .hero-stage::after {
                display: none;
            }

            .hero-copy {
                padding-right: 0;
            }

            .hero .eyebrow {
                margin-right: 78px;
            }

            .hero h1 {
                font-size: clamp(2rem, 10.5vw, 2.55rem);
            }

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

            .burst-note {
                top: 22px;
                right: 18px;
                width: 76px;
                height: 76px;
                padding: 10px;
                border-radius: 25px;
                font-size: .66rem;
            }

            .hero-actions {
                display: grid;
                grid-template-columns: 1fr;
                margin-bottom: 30px;
            }

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

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

            .metric,
            .metric:first-child {
                grid-column: auto;
                min-height: 132px;
                padding: 18px;
            }

            .metric:first-child {
                grid-column: span 2;
            }

            .metric-value {
                font-size: 1.25rem;
            }

            .benefit-item,
            .benefit-item.last {
                border-right: 0;
                border-bottom: 1px solid var(--border);
            }

            .benefit-item.last {
                border-bottom: 0;
            }

            .bento-grid {
                display: block;
            }

            .feature-card,
            .feature-card.main-card,
            .feature-card.wide-card {
                min-height: auto;
                margin-bottom: 16px;
                padding: 22px;
            }

            .feature-card.main-card {
                min-height: 510px;
            }

            .visual-track {
                right: 20px;
                bottom: 20px;
                left: 20px;
            }

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

            .scene-intro,
            .steps-panel {
                padding: 24px;
            }

            .step-row {
                grid-template-columns: 48px 1fr;
                gap: 14px;
            }

            .step-state {
                grid-column: 2;
            }

            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .compare-divider {
                height: 42px;
            }

            .compare-card {
                padding: 24px;
            }

            .updates-list {
                padding: 8px 20px;
            }

            .update-item {
                grid-template-columns: 52px 1fr;
                gap: 12px;
            }

            .update-item > a {
                grid-column: 2;
            }

            .faq-layout {
                gap: 26px;
            }

            .accordion-title {
                padding: 18px 52px 18px 19px;
                font-size: 1rem;
            }

            .accordion-title::before {
                right: 19px;
            }

            .accordion-content {
                padding: 0 19px 21px;
            }

            .contact-section {
                padding-bottom: 70px;
            }

            .contact-panel {
                padding: 28px 18px;
                border-radius: 25px;
            }

            .contact-form {
                padding: 22px 18px;
            }

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

            .field-full {
                grid-column: auto;
            }

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

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

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

            .footer-top {
                gap: 38px;
            }

            .footer-side {
                gap: 22px;
            }

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

        @media (max-width: 420px) {
            .brand-main {
                max-width: 170px;
            }

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

            .metric,
            .metric:first-child {
                grid-column: auto;
            }

            .compare-list li {
                grid-template-columns: 22px 1fr;
            }

            .compare-list small {
                grid-column: 2;
            }
        }

        @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: category2 */
:root{
 --ink:#17181b;--ink-soft:#26272b;--coral:#ff6948;--coral-dark:#e94f32;
 --coral-pale:#fff0eb;--mint:#22a88a;--mint-dark:#147b67;--mint-pale:#e8f7f3;
 --cream:#f7f3ec;--cream-deep:#eee8dd;--white:#fff;--text:#36373b;
 --muted:#5d5e62;--light-muted:#85868a;--border:#ded9d1;--warning:#f1b94b;
 --warning-pale:#fff7df;--error:#c83d32;--success:#168469;
 --radius-sm:12px;--radius-md:18px;--radius-lg:24px;--radius-xl:32px;
 --shadow-sm:0 8px 24px rgba(23,24,27,.06);--shadow-md:0 18px 46px rgba(23,24,27,.1);
 --shadow-dark:0 22px 58px rgba(0,0,0,.22);--container:1240px;--ease:220ms ease;
}
html{scroll-behavior:smooth;background:var(--cream)}
*,:before,:after{box-sizing:border-box}
body{margin:0;overflow-x:hidden;color:var(--text);background:radial-gradient(circle at 88% 5%,rgba(255,105,72,.09),transparent 27rem),var(--cream);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",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(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled,input:disabled{cursor:not-allowed;opacity:.58}
img,svg{display:block;max-width:100%}.grid-container{width:min(calc(100% - 40px),var(--container));max-width:var(--container)}
h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink);line-height:1.22;letter-spacing:-.035em}h1{font-size:clamp(2.2rem,5vw,3.7rem);margin-bottom:22px}h2{font-size:clamp(1.8rem,3vw,2.5rem);margin-bottom:16px}h3{font-size:1.25rem;margin-bottom:10px}
.section{padding:104px 0}.section-compact{padding:72px 0}.section-heading{max-width:760px;margin-bottom:42px}.section-heading p{max-width:700px;color:var(--muted);font-size:1.06rem;margin-bottom:0}
.eyebrow,.badge{display:inline-flex;align-items:center;min-height:30px;padding:5px 12px;border-radius:999px;font-size:.78rem;font-weight:700;line-height:1.4;letter-spacing:.02em}
.eyebrow{gap:8px;margin-bottom:18px;background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.eyebrow:before{width:8px;height:8px;border-radius:50%;background:var(--coral);content:""}
.badge-keyword{color:#9d361f;background:var(--coral-pale)}.badge-status{color:var(--mint-dark);background:var(--mint-pale)}.badge-time{color:var(--ink);background:var(--warning-pale)}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;margin:0;padding:13px 23px;border:1px solid transparent;border-radius:999px;font-size:.96rem;font-weight:750;line-height:1.2;transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease)}
.button.primary{color:var(--white);background:var(--coral);box-shadow:0 10px 24px rgba(255,105,72,.24)}.button.primary:hover,.button.primary:focus{color:var(--white);background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,105,72,.3)}
.button.secondary{color:var(--ink);background:transparent;border-color:var(--ink)}.button.secondary:hover,.button.secondary:focus{color:var(--white);background:var(--ink);transform:translateY(-2px)}
.button.light{color:var(--ink);background:var(--white)}.button.light:hover{background:var(--cream);transform:translateY(-2px)}.button:active{transform:translateY(0) scale(.985)!important}
.text-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;color:var(--ink);font-weight:750}.text-link:after{content:"→";transition:transform var(--ease)}.text-link:hover{color:var(--coral-dark)}.text-link:hover:after{transform:translateX(4px)}
.site-header{position:fixed;z-index:1000;top:18px;right:0;left:0;pointer-events:none}.nav-shell{display:flex;align-items:center;gap:22px;min-height:70px;padding:10px 12px 10px 22px;pointer-events:auto;background:rgba(255,255,255,.96);border:1px solid rgba(222,217,209,.92);border-radius:999px;box-shadow:var(--shadow-md)}
.brand{display:flex;align-items:center;gap:11px;min-width:280px}.brand-mark{position:relative;width:35px;height:35px;flex:none;border-radius:11px;background:var(--ink);transform:rotate(-8deg)}.brand-mark:after{position:absolute;right:7px;bottom:7px;width:11px;height:11px;border-radius:50%;background:var(--coral);content:""}
.brand-main{display:block;color:var(--ink);font-size:1rem;font-weight:800;line-height:1.2}.brand-sub{display:block;color:var(--light-muted);font-size:.7rem;line-height:1.3;margin-top:3px}
.desktop-nav{display:flex;align-items:center;gap:4px;flex:1}.desktop-nav a,.mobile-panel>a:not(.button){min-height:44px;padding:11px 15px;border-radius:999px;color:var(--muted);font-size:.9rem;font-weight:700}.desktop-nav a:hover,.desktop-nav a:focus,.desktop-nav a.active{color:var(--ink);background:var(--cream-deep)}.nav-action{white-space:nowrap}
.menu-toggle{display:none;width:46px;height:46px;border:0;border-radius:50%;background:var(--ink)}.menu-toggle-lines,.menu-toggle-lines:before,.menu-toggle-lines:after{display:block;width:18px;height:2px;margin:auto;background:var(--white);content:"";transition:transform var(--ease)}.menu-toggle-lines{position:relative}.menu-toggle-lines:before{position:absolute;top:-6px}.menu-toggle-lines:after{position:absolute;top:6px}
.mobile-panel{display:none}.page-top{padding-top:160px}.guide-hero{padding:54px 0 78px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:25px;color:var(--light-muted);font-size:.86rem}.breadcrumb a:hover{color:var(--coral-dark)}.hero-copy p{max-width:650px;color:var(--muted);font-size:1.1rem}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.guide-rail{position:relative;padding:30px;background:var(--ink);border-radius:var(--radius-xl);box-shadow:var(--shadow-dark);color:var(--white);overflow:hidden}.guide-rail:before{position:absolute;right:-70px;top:-80px;width:230px;height:230px;border:1px solid rgba(255,105,72,.5);border-radius:50%;box-shadow:0 0 0 25px rgba(255,105,72,.08),0 0 0 50px rgba(255,105,72,.05);content:""}
.rail-label{position:relative;color:#ffab96;font-size:.78rem;font-weight:700}.rail-title{position:relative;margin:12px 0 28px;color:var(--white);font-size:1.5rem}.rail-list{position:relative;margin:0;padding:0;list-style:none}.rail-list li{display:flex;gap:15px;align-items:flex-start;padding:17px 0;border-top:1px solid rgba(255,255,255,.14)}.rail-list li:last-child{border-bottom:1px solid rgba(255,255,255,.14)}.rail-number{display:grid;place-items:center;width:30px;height:30px;flex:none;border-radius:10px;background:var(--coral);color:var(--white);font-size:.8rem;font-weight:800}.rail-list strong{display:block;color:var(--white);font-size:1rem}.rail-list span{display:block;margin-top:3px;color:#bfc0c2;font-size:.86rem;line-height:1.55}
.guide-index{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(255,255,255,.48)}.index-inner{display:flex;align-items:center;gap:25px;min-height:70px;overflow:auto;white-space:nowrap}.index-label{color:var(--light-muted);font-size:.82rem;font-weight:700}.index-inner a{padding:8px 14px;border-radius:999px;color:var(--muted);font-size:.9rem;font-weight:700}.index-inner a:hover,.index-inner a.active{color:var(--ink);background:var(--white);box-shadow:var(--shadow-sm)}
.timeline-layout{display:grid;grid-template-columns:220px 1fr;gap:65px;align-items:start}.sticky-index{position:sticky;top:112px}.sticky-index h3{font-size:1rem;margin-bottom:16px}.sticky-index ul{margin:0;padding:0 0 0 19px;border-left:2px solid var(--border);list-style:none}.sticky-index li{position:relative;margin:0 0 13px}.sticky-index li:before{position:absolute;left:-25px;top:12px;width:9px;height:9px;border-radius:50%;background:var(--cream);border:2px solid var(--border);content:""}.sticky-index li.active:before{background:var(--coral);border-color:var(--coral)}.sticky-index a{display:block;color:var(--muted);font-size:.9rem}.sticky-index a:hover,.sticky-index li.active a{color:var(--coral-dark);font-weight:750}
.chapter-stack{display:grid;gap:22px}.chapter-card{display:grid;grid-template-columns:86px 1fr;gap:25px;padding:30px;background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);scroll-margin-top:120px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}.chapter-card:hover{transform:translateY(-4px);border-color:#ffb09d;box-shadow:var(--shadow-md)}.chapter-no{color:var(--coral);font-size:2.5rem;font-weight:850;line-height:1}.chapter-card p{color:var(--muted);margin-bottom:16px}.chapter-note{padding:14px 16px;border-radius:var(--radius-sm);color:var(--mint-dark);background:var(--mint-pale);font-size:.9rem}.chapter-note.warning{color:#805b12;background:var(--warning-pale)}.chapter-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.scene-section{background:var(--cream-deep)}.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.scene-panel{padding:30px;background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg)}.scene-panel.dark{background:var(--ink);color:var(--white);border-color:var(--ink)}.scene-panel.dark h3{color:var(--white)}.scene-panel h3{margin-top:14px}.scene-panel p{color:var(--muted)}.scene-panel.dark p{color:#c3c4c6}.scene-list{margin:20px 0 0;padding:0;list-style:none}.scene-list li{display:flex;gap:10px;padding:10px 0;border-top:1px solid var(--border);font-size:.92rem}.dark .scene-list li{border-color:rgba(255,255,255,.15)}.check{color:var(--mint);font-weight:900}
.check-section{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:start}.checklist{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0;padding:0;list-style:none}.checklist li{display:flex;gap:12px;align-items:flex-start;padding:17px;background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);font-size:.93rem}.check-icon{display:grid;place-items:center;width:23px;height:23px;flex:none;border-radius:50%;background:var(--mint-pale);color:var(--mint-dark);font-weight:900}
.related{background:var(--ink);color:var(--white)}.related h2,.related h3{color:var(--white)}.related p{color:#c6c7c9}.related-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:16px}.related-card{display:flex;flex-direction:column;justify-content:space-between;min-height:220px;padding:27px;background:var(--ink-soft);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg)}.related-card:first-child{background:linear-gradient(135deg,#303135,#26272b)}.related-card .text-link{color:var(--white)}.related-card .text-link:hover{color:#ffab96}
.mini-contact{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:25px 30px;background:var(--coral-pale);border:1px solid #ffc5b7;border-radius:var(--radius-lg)}.mini-contact p{margin:0;color:var(--muted)}
.site-footer{padding:72px 0 0;color:#c5c6c8;background:var(--ink)}.footer-top{display:grid;grid-template-columns:1fr 1fr;gap:90px;padding-bottom:55px}.footer-brand .brand-main{color:var(--white)}.footer-brand .brand-sub{color:#919297}.footer-brand p{max-width:510px;margin-top:22px;color:#a9aaad;font-size:.9rem}.footer-side{display:grid;grid-template-columns:1fr 1.25fr;gap:35px}.footer-group h3{color:var(--white);font-size:1rem;letter-spacing:0}.footer-links{margin:0;padding:0;list-style:none}.footer-links li{margin-bottom:8px}.footer-links a{color:#b1b2b5;font-size:.9rem}.footer-links a:hover{color:#ff9b84}.footer-note{color:#a9aaad;font-size:.86rem;line-height:1.7}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);color:#898a8e;font-size:.78rem}.footer-bottom a:hover{color:var(--white)}
:focus-visible{outline:3px solid var(--warning);outline-offset:3px}.hide{display:none!important}
@media(max-width:1023px){.brand{min-width:230px}.hero-grid{gap:35px}.timeline-layout{grid-template-columns:185px 1fr;gap:35px}.check-section{gap:35px}.related-grid{grid-template-columns:1fr 1fr}.related-card:first-child{grid-column:span 2}.section{padding:80px 0}}
@media(max-width:639px){.grid-container{width:min(calc(100% - 28px),var(--container))}.site-header{top:10px}.nav-shell{min-height:60px;padding:8px 10px 8px 16px}.brand{min-width:0;flex:1}.brand-main{font-size:.82rem}.brand-sub{font-size:.62rem}.brand-mark{width:31px;height:31px}.show-for-medium{display:none!important}.hide-for-medium{display:block}.menu-toggle{display:block}.mobile-panel{display:flex;visibility:hidden;opacity:0;transform:translateY(-8px);flex-direction:column;gap:5px;margin-top:8px;padding:12px;background:rgba(255,255,255,.98);border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow-md);pointer-events:none;transition:opacity var(--ease),transform var(--ease),visibility var(--ease)}.mobile-panel.is-open{visibility:visible;opacity:1;transform:translateY(0);pointer-events:auto}.mobile-panel>a:not(.button){width:100%;padding:12px 15px}.mobile-panel .button{width:100%;margin-top:7px}.page-top{padding-top:106px}.guide-hero{padding:35px 0 55px}.hero-grid,.scene-grid,.check-section{grid-template-columns:1fr}.hero-copy p{font-size:1rem}.hero-actions .button{width:100%}.guide-rail{padding:24px}.index-inner{gap:10px;min-height:62px}.index-label{display:none}.section{padding:62px 0}.section-heading{margin-bottom:28px}.timeline-layout{display:block}.sticky-index{position:static;margin-bottom:25px;padding-bottom:5px;overflow:auto}.sticky-index h3{display:none}.sticky-index ul{display:flex;gap:8px;min-width:max-content;padding:0;border:0}.sticky-index li{margin:0}.sticky-index li:before{display:none}.sticky-index a{padding:8px 13px;background:var(--white);border:1px solid var(--border);border-radius:999px;font-size:.8rem}.sticky-index li.active a{background:var(--coral-pale);border-color:#ffb09d}.chapter-card{grid-template-columns:1fr;gap:12px;padding:22px}.chapter-no{font-size:1.7rem}.checklist{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}.related-card:first-child{grid-column:auto}.related-card{min-height:185px}.mini-contact{align-items:flex-start;flex-direction:column;padding:23px}.mini-contact .button{width:100%}.footer-top,.footer-side{grid-template-columns:1fr;gap:28px}.footer-top{padding-bottom:35px}.footer-bottom{align-items:flex-start;flex-direction:column;gap:7px}.footer-bottom span{max-width:100%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
      --ink:#17181b;--ink-soft:#26272b;--coral:#ff6948;--coral-dark:#e94f32;
      --coral-pale:#fff0eb;--mint:#22a88a;--mint-dark:#147b67;--mint-pale:#e8f7f3;
      --cream:#f7f3ec;--cream-deep:#eee8dd;--white:#fff;--text:#36373b;--muted:#5d5e62;
      --light-muted:#85868a;--border:#ded9d1;--warning:#f1b94b;--warning-pale:#fff7df;
      --error:#c83d32;--success:#168469;--radius-sm:12px;--radius-md:18px;--radius-lg:24px;
      --radius-xl:32px;--shadow-sm:0 8px 24px rgba(23,24,27,.06);--shadow-md:0 18px 46px rgba(23,24,27,.10);
      --shadow-dark:0 22px 58px rgba(0,0,0,.22);--container:1240px;--ease:220ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;background:var(--cream)}
    body{margin:0;overflow-x:hidden;color:var(--text);background:radial-gradient(circle at 90% 4%,rgba(255,105,72,.08),transparent 26rem),var(--cream);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",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(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
    button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled,input:disabled{cursor:not-allowed;opacity:.58}
    img,svg{display:block;max-width:100%}
    .grid-container{width:min(100% - 40px,var(--container));max-width:var(--container)}
    .section{position:relative;padding:96px 0}
    .section-compact{padding:70px 0}
    .section-heading{max-width:780px;margin-bottom:40px}
    .section-heading p{max-width:700px;margin:10px 0 0;color:var(--muted);font-size:1.06rem}
    h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.035em}
    h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.14}
    h2{font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.25}
    h3{font-size:1.25rem;line-height:1.4}
    p{margin:0 0 18px}.eyebrow,.badge{display:inline-flex;align-items:center;min-height:30px;padding:5px 12px;border-radius:999px;font-size:.78rem;font-weight:700;line-height:1.4;letter-spacing:.02em}
    .eyebrow{gap:8px;margin-bottom:18px;background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow-sm);color:var(--ink)}
    .eyebrow:before{width:8px;height:8px;border-radius:50%;background:var(--coral);content:""}
    .badge-keyword{color:#9d361f;background:var(--coral-pale)}.badge-status{color:var(--mint-dark);background:var(--mint-pale)}.badge-time{color:var(--ink);background:var(--warning-pale)}
    .button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;margin:0;padding:13px 23px;border:1px solid transparent;border-radius:999px;font-size:.96rem;font-weight:750;line-height:1.2;transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease)}
    .button.primary{color:#fff;background:var(--coral);box-shadow:0 10px 24px rgba(255,105,72,.24)}
    .button.primary:hover,.button.primary:focus{color:#fff;background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,105,72,.3)}
    .button.secondary{color:var(--ink);background:transparent;border-color:var(--ink)}.button.secondary:hover,.button.secondary:focus{color:#fff;background:var(--ink);transform:translateY(-2px)}
    .button.light{color:var(--ink);background:#fff}.button.light:hover{background:var(--cream);transform:translateY(-2px)}
    .button:active{transform:translateY(0) scale(.985)!important}
    .text-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;color:var(--ink);font-weight:750}.text-link:after{content:"→";transition:transform var(--ease)}.text-link:hover{color:var(--coral-dark)}.text-link:hover:after{transform:translateX(4px)}
    .site-header{position:fixed;z-index:1000;top:18px;right:0;left:0;pointer-events:none}.site-header .grid-container{pointer-events:none}
    .nav-shell{display:flex;align-items:center;gap:24px;min-height:72px;padding:10px 14px 10px 20px;background:rgba(255,255,255,.96);border:1px solid var(--border);border-radius:999px;box-shadow:var(--shadow-md);pointer-events:auto}
    .brand{display:flex;align-items:center;gap:10px;min-width:245px}.brand-mark{position:relative;width:32px;height:32px;border-radius:10px;background:var(--coral);box-shadow:inset -7px -7px 0 rgba(23,24,27,.12)}.brand-mark:after{position:absolute;right:6px;bottom:6px;width:10px;height:10px;border:2px solid #fff;border-radius:50%;content:""}
    .brand-main{display:block;color:var(--ink);font-size:.93rem;font-weight:850;line-height:1.25;white-space:nowrap}.brand-sub{display:block;color:var(--light-muted);font-size:.68rem;line-height:1.3}
    .desktop-nav{display:flex;align-items:center;justify-content:center;gap:4px;flex:1}.desktop-nav a,.mobile-panel a:not(.button){min-height:44px;padding:10px 15px;border-radius:999px;color:var(--muted);font-size:.9rem;font-weight:700}.desktop-nav a:hover,.desktop-nav a:focus,.desktop-nav a.active{color:var(--ink);background:var(--cream-deep)}
    .nav-action{white-space:nowrap}.menu-toggle{display:none;width:44px;height:44px;border:0;background:transparent}.menu-toggle-lines,.menu-toggle-lines:before,.menu-toggle-lines:after{display:block;width:21px;height:2px;background:var(--ink);transition:transform var(--ease);content:""}.menu-toggle-lines{margin:auto}.menu-toggle-lines:before{transform:translateY(-7px)}.menu-toggle-lines:after{transform:translateY(5px)}
    .mobile-panel{display:none}
    .hero{padding:165px 0 76px}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.hero-copy{max-width:650px}.hero-copy p{max-width:620px;margin:22px 0 28px;color:var(--muted);font-size:1.1rem}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}.crumbs{display:flex;gap:8px;align-items:center;margin-bottom:20px;color:var(--light-muted);font-size:.84rem}.crumbs a:hover{color:var(--coral-dark)}
    .cover-stack{position:relative;min-height:360px}.cover-main{position:absolute;inset:20px 0 0 12%;overflow:hidden;min-height:300px;border-radius:var(--radius-xl);background:linear-gradient(135deg,#25272b,#454448);box-shadow:var(--shadow-dark);transform:rotate(3deg)}
    .cover-main:before{position:absolute;inset:0;background:radial-gradient(circle at 75% 20%,rgba(255,105,72,.78),transparent 28%),linear-gradient(120deg,transparent 42%,rgba(34,168,138,.4));content:""}
    .cover-main:after{position:absolute;right:14%;bottom:16%;width:44%;height:2px;background:rgba(255,255,255,.75);box-shadow:0 13px 0 rgba(255,255,255,.22),0 26px 0 rgba(255,255,255,.14);content:""}
    .cover-label{position:absolute;z-index:1;top:28px;left:28px;color:#fff;font-size:.78rem;letter-spacing:.12em}.cover-number{position:absolute;z-index:1;right:25px;bottom:22px;color:rgba(255,255,255,.84);font-size:4.5rem;font-weight:900;line-height:1}
    .cover-tag{position:absolute;z-index:2;top:4px;left:0;padding:12px 16px;border-radius:14px;background:var(--coral);color:#fff;font-size:.82rem;font-weight:800;box-shadow:var(--shadow-md)}.cover-note{position:absolute;z-index:2;right:0;bottom:10px;max-width:180px;padding:15px;border:1px solid var(--border);border-radius:16px;background:#fff;box-shadow:var(--shadow-md);font-size:.8rem;line-height:1.5}
    .filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:12px;border:1px solid var(--border);border-radius:18px;background:var(--white);box-shadow:var(--shadow-sm)}.filter-label{display:flex;align-items:center;padding:0 10px;color:var(--muted);font-size:.86rem;font-weight:700}.filter-pill{min-height:42px;padding:9px 16px;border:1px solid transparent;border-radius:999px;background:var(--cream);color:var(--muted);font-size:.86rem;font-weight:700}.filter-pill:hover,.filter-pill.active{border-color:var(--coral);background:var(--coral-pale);color:#9d361f}
    .selection-layout{display:grid;grid-template-columns:225px 1fr;gap:42px}.index-panel{align-self:start;position:sticky;top:110px;padding:24px;border:1px solid var(--border);border-radius:var(--radius-md);background:#fff}.index-panel h3{margin-bottom:15px;font-size:1rem}.index-list{margin:0;padding:0;list-style:none}.index-list li{border-bottom:1px solid var(--cream-deep)}.index-list a{display:block;padding:12px 0;color:var(--muted);font-size:.9rem}.index-list a:hover,.index-list a.active{color:var(--coral-dark);font-weight:750}
    .feature-card{display:grid;grid-template-columns:1.02fr 1fr;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}.feature-visual{position:relative;min-height:270px;background:linear-gradient(145deg,var(--ink),#494246)}.feature-visual:before{position:absolute;inset:0;background:radial-gradient(circle at 20% 25%,rgba(34,168,138,.7),transparent 24%),radial-gradient(circle at 75% 70%,rgba(255,105,72,.7),transparent 35%);content:""}.visual-grid{position:absolute;inset:24px;border:1px solid rgba(255,255,255,.25);background:repeating-linear-gradient(90deg,transparent 0 34px,rgba(255,255,255,.1) 35px 36px),repeating-linear-gradient(0deg,transparent 0 34px,rgba(255,255,255,.1) 35px 36px)}.visual-word{position:absolute;right:22px;bottom:18px;color:#fff;font-size:2.5rem;font-weight:900;line-height:1}
    .feature-content{padding:32px}.feature-content p{margin:16px 0;color:var(--muted)}.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
    .small-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}.small-card{position:relative;padding:24px;border:1px solid var(--border);border-radius:var(--radius-md);background:#fff;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}.small-card:hover{transform:translateY(-4px);border-color:#f2a08d;box-shadow:var(--shadow-md)}.small-card p{margin:12px 0;color:var(--muted);font-size:.92rem;line-height:1.65}.card-code{display:block;margin-bottom:12px;color:var(--coral-dark);font-size:.75rem;font-weight:850;letter-spacing:.12em}
    .summary-strip{display:grid;grid-template-columns:repeat(4,1fr);margin-top:42px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--cream-deep);overflow:hidden}.summary-item{padding:20px 22px;border-right:1px solid var(--border)}.summary-item:last-child{border-right:0}.summary-item strong{display:block;color:var(--ink);font-size:1.35rem}.summary-item span{color:var(--muted);font-size:.82rem}
    .notice{display:flex;gap:14px;align-items:flex-start;margin-top:34px;padding:18px 20px;border-left:4px solid var(--mint);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--mint-pale);color:var(--mint-dark);font-size:.9rem}.notice strong{color:var(--ink)}
    .faq-list{max-width:850px;margin:0}.faq-item{margin-bottom:10px;border:1px solid var(--border);border-radius:var(--radius-md);background:#fff;overflow:hidden}.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:60px;padding:16px 20px;border:0;background:#fff;color:var(--ink);text-align:left;font-weight:750}.faq-question:hover{background:var(--coral-pale)}.faq-icon{font-size:1.4rem;color:var(--coral);transition:transform var(--ease)}.faq-answer{display:none;padding:0 20px 20px;color:var(--muted);font-size:.94rem}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-icon{transform:rotate(45deg)}
    .cta-panel{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:42px;border-radius:var(--radius-xl);background:var(--ink);color:#fff;box-shadow:var(--shadow-dark)}.cta-panel h2{color:#fff;font-size:2rem}.cta-panel p{max-width:650px;margin:12px 0 0;color:#c9c7c3}.cta-panel .button{flex-shrink:0}
    .site-footer{padding:70px 0 0;background:var(--ink);color:#c9c7c3}.footer-top{display:grid;grid-template-columns:1fr 1fr;gap:80px;padding-bottom:48px}.site-footer .brand-main{color:#fff}.site-footer .brand-sub{color:#aaa}.footer-brand p{max-width:500px;margin-top:22px;color:#aaa;font-size:.9rem}.footer-side{display:grid;grid-template-columns:1fr 1fr;gap:35px}.footer-group h3{margin-bottom:14px;color:#fff;font-size:1rem}.footer-links{margin:0;padding:0;list-style:none}.footer-links li{margin:7px 0}.footer-links a{color:#aaa;font-size:.9rem}.footer-links a:hover{color:var(--coral)}.footer-note{margin:0;color:#aaa;font-size:.86rem;line-height:1.7}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);font-size:.78rem;color:#929294}.footer-bottom a:hover{color:#fff}
    a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--warning);outline-offset:3px}
    @media(max-width:1023px){.nav-shell{gap:12px}.brand{min-width:220px}.hero-grid{gap:35px}.selection-layout{grid-template-columns:190px 1fr}.section{padding:78px 0}.summary-strip{grid-template-columns:repeat(2,1fr)}.summary-item:nth-child(2){border-right:0}.summary-item{border-bottom:1px solid var(--border)}}
    @media(max-width:639px){.grid-container{width:min(100% - 28px,var(--container))}.site-header{top:10px}.nav-shell{min-height:62px;padding:8px 10px 8px 14px}.brand{min-width:0;flex:1}.brand-main{font-size:.78rem}.brand-sub{font-size:.61rem}.brand-mark{width:28px;height:28px}.desktop-nav,.nav-action{display:none!important}.menu-toggle{display:block}.mobile-panel{display:flex;visibility:hidden;flex-direction:column;gap:7px;max-height:0;margin-top:8px;padding:0;border:1px solid transparent;border-radius:20px;background:#fff;opacity:0;overflow:hidden;pointer-events:none;transition:max-height var(--ease),opacity var(--ease),padding var(--ease),visibility var(--ease)}.mobile-panel.open{visibility:visible;max-height:310px;padding:12px;opacity:1;border-color:var(--border);box-shadow:var(--shadow-md);pointer-events:auto}.mobile-panel a:not(.button){padding:12px 15px}.mobile-panel .button{width:100%;margin-top:5px}.hero{padding:130px 0 48px}.hero-grid{display:flex;flex-direction:column;gap:30px}.hero-copy p{font-size:1rem}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .button{width:100%}.cover-stack{width:100%;min-height:285px}.cover-main{min-height:245px;inset:16px 3% 0 7%}.cover-number{font-size:3.4rem}.section{padding:58px 0}.section-heading{margin-bottom:28px}.filter-bar{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}.filter-bar::-webkit-scrollbar{display:none}.filter-label{flex-shrink:0}.filter-pill{flex-shrink:0}.selection-layout{display:block}.index-panel{position:static;margin-bottom:22px;padding:18px}.index-list{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}.index-list li{flex-shrink:0;border:0}.index-list a{padding:9px 13px;border-radius:999px;background:var(--cream);font-size:.82rem}.feature-card{display:block}.feature-visual{min-height:210px}.feature-content{padding:23px}.small-card-grid{grid-template-columns:1fr}.summary-strip{grid-template-columns:1fr 1fr;margin-top:28px}.summary-item{padding:15px 14px}.summary-item strong{font-size:1.1rem}.cta-panel{display:block;padding:28px 23px}.cta-panel h2{font-size:1.65rem}.cta-panel .button{width:100%;margin-top:22px}.footer-top,.footer-side{grid-template-columns:1fr;gap:30px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}