/* roulang page: index */
:root {
            --navy: #10243f;
            --navy-deep: #091a31;
            --blue: #2367d1;
            --blue-bright: #3f87f5;
            --cyan: #46b6d8;
            --ink: #172b45;
            --muted: #6b7b90;
            --paper: #f5f8fc;
            --white: #ffffff;
            --line: #dfe7f1;
            --soft-blue: #eaf3ff;
            --soft-cyan: #e8f8fb;
            --orange: #f39752;
            --shadow: 0 18px 45px rgba(25, 61, 103, .11);
            --shadow-small: 0 8px 24px rgba(25, 61, 103, .08);
            --radius: 16px;
            --radius-small: 10px;
            --container: 1180px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--paper);
            color: var(--ink);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font: inherit;
        }

        button {
            border: 0;
            cursor: pointer;
        }

        :focus-visible {
            outline: 3px solid rgba(70, 182, 216, .65);
            outline-offset: 3px;
        }

        .container {
            width: min(var(--container), calc(100% - 48px));
            margin: 0 auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 20;
            background: rgba(255, 255, 255, .94);
            border-bottom: 1px solid rgba(223, 231, 241, .9);
            backdrop-filter: blur(16px);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 78px;
            gap: 28px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            color: var(--navy);
            font-size: 19px;
            font-weight: 800;
            letter-spacing: .2px;
            white-space: nowrap;
        }

        .brand-mark {
            display: grid;
            width: 36px;
            height: 36px;
            place-items: center;
            border-radius: 10px;
            color: var(--white);
            background: var(--blue);
            box-shadow: 0 8px 18px rgba(35, 103, 209, .22);
        }

        .brand-mark::before {
            content: "";
            width: 0;
            height: 0;
            margin-left: 3px;
            border-top: 7px solid transparent;
            border-bottom: 7px solid transparent;
            border-left: 10px solid #fff;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 30px;
            margin-left: auto;
        }

        .main-nav a {
            position: relative;
            padding: 26px 0;
            color: var(--muted);
            font-size: 14px;
            font-weight: 700;
            transition: color .2s ease;
        }

        .main-nav a::after {
            position: absolute;
            right: 0;
            bottom: 17px;
            left: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--blue);
            content: "";
            opacity: 0;
            transform: scaleX(.4);
            transition: opacity .2s ease, transform .2s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--blue);
        }

        .main-nav a.active::after,
        .main-nav a:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

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

        .nav-actions .button {
            min-height: 40px;
            padding: 0 16px;
            font-size: 13px;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--navy);
            background: var(--white);
            font-size: 20px;
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 50px;
            padding: 0 23px;
            border: 1px solid transparent;
            border-radius: 9px;
            font-size: 15px;
            font-weight: 800;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
        }

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

        .button-primary {
            color: var(--white);
            background: var(--blue);
            box-shadow: 0 10px 22px rgba(35, 103, 209, .24);
        }

        .button-primary:hover {
            background: #1957b8;
            box-shadow: 0 14px 28px rgba(35, 103, 209, .3);
        }

        .button-secondary {
            color: var(--navy);
            background: var(--white);
            border-color: var(--line);
        }

        .button-secondary:hover {
            border-color: var(--blue-bright);
            color: var(--blue);
            background: var(--soft-blue);
        }

        .button-dark {
            color: var(--white);
            background: var(--navy);
        }

        .button-dark:hover {
            background: #1b3c66;
            box-shadow: 0 12px 25px rgba(9, 26, 49, .22);
        }

        .hero {
            padding: 54px 0 72px;
            overflow: hidden;
            background: var(--white);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            align-items: center;
            gap: 54px;
        }

        .hero-copy {
            position: relative;
            z-index: 2;
            padding: 22px 0 22px 4px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 21px;
            color: var(--blue);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 1.5px;
        }

        .eyebrow::before {
            width: 28px;
            height: 2px;
            background: var(--cyan);
            content: "";
        }

        h1 {
            max-width: 540px;
            color: var(--navy-deep);
            font-size: clamp(34px, 4.3vw, 57px);
            line-height: 1.17;
            letter-spacing: -1.5px;
        }

        .hero-text {
            max-width: 510px;
            margin: 23px 0 29px;
            color: var(--muted);
            font-size: 17px;
            line-height: 1.9;
        }

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

        .hero-kpis {
            display: flex;
            flex-wrap: wrap;
            gap: 27px;
            margin-top: 33px;
            padding-top: 22px;
            border-top: 1px solid var(--line);
        }

        .kpi strong {
            display: block;
            color: var(--navy);
            font-size: 24px;
            line-height: 1.2;
        }

        .kpi span {
            display: block;
            margin-top: 4px;
            color: var(--muted);
            font-size: 12px;
        }

        .hero-visual {
            position: relative;
            min-height: 475px;
            padding: 20px 0 0 24px;
        }

        .hero-image {
            position: relative;
            z-index: 2;
            width: 92%;
            height: 430px;
            margin-left: auto;
            overflow: hidden;
            border-radius: 22px;
            box-shadow: var(--shadow);
            transform: rotate(2.4deg);
        }

        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-image::after {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 42%, rgba(7, 23, 44, .76));
            content: "";
        }

        .visual-caption {
            position: absolute;
            z-index: 3;
            right: 36px;
            bottom: 42px;
            left: 56px;
            color: var(--white);
        }

        .visual-caption small {
            display: block;
            margin-bottom: 6px;
            color: #9ee6f1;
            font-weight: 700;
        }

        .visual-caption strong {
            display: block;
            font-size: 25px;
            line-height: 1.3;
        }

        .visual-note {
            position: absolute;
            z-index: 4;
            top: 7px;
            left: 0;
            width: 190px;
            padding: 16px;
            border: 1px solid var(--line);
            border-radius: 13px;
            background: rgba(255, 255, 255, .95);
            box-shadow: var(--shadow-small);
            transform: rotate(-4deg);
        }

        .visual-note b {
            display: block;
            color: var(--navy);
            font-size: 13px;
        }

        .visual-note span {
            display: block;
            margin-top: 6px;
            color: var(--muted);
            font-size: 12px;
            line-height: 1.5;
        }

        .visual-grid {
            position: absolute;
            right: 0;
            bottom: 0;
            width: 190px;
            height: 155px;
            border-radius: 18px;
            background-color: var(--soft-blue);
            background-image: linear-gradient(rgba(35, 103, 209, .12) 1px, transparent 1px), linear-gradient(90deg, rgba(35, 103, 209, .12) 1px, transparent 1px);
            background-size: 22px 22px;
        }

        .section {
            padding: 88px 0;
        }

        .section-heading {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 34px;
        }

        .section-heading h2 {
            max-width: 600px;
            color: var(--navy);
            font-size: clamp(26px, 3vw, 38px);
            line-height: 1.25;
            letter-spacing: -.6px;
        }

        .section-heading p {
            max-width: 500px;
            color: var(--muted);
            font-size: 15px;
        }

        .section-kicker {
            margin-bottom: 9px;
            color: var(--blue);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: 1.6px;
        }

        .ticket-section {
            background: #edf4fc;
        }

        .ticket-grid {
            display: grid;
            grid-template-columns: 1.2fr .8fr .8fr;
            gap: 16px;
        }

        .ticket {
            position: relative;
            min-height: 218px;
            padding: 27px;
            overflow: hidden;
            border: 1px solid rgba(35, 103, 209, .12);
            border-radius: var(--radius);
            background: var(--white);
            box-shadow: var(--shadow-small);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .ticket:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .ticket::after {
            position: absolute;
            right: -25px;
            bottom: -44px;
            width: 140px;
            height: 140px;
            border: 20px solid var(--soft-blue);
            border-radius: 50%;
            content: "";
        }

        .ticket.featured {
            color: var(--white);
            background: var(--navy);
        }

        .ticket.featured::after {
            border-color: rgba(70, 182, 216, .16);
        }

        .ticket-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .ticket-icon {
            display: grid;
            width: 39px;
            height: 39px;
            place-items: center;
            border-radius: 10px;
            color: var(--blue);
            background: var(--soft-blue);
            font-size: 18px;
            font-weight: 900;
        }

        .featured .ticket-icon {
            color: var(--white);
            background: rgba(255, 255, 255, .14);
        }

        .ticket-tag,
        .badge {
            display: inline-flex;
            align-items: center;
            min-height: 25px;
            padding: 0 10px;
            border-radius: 99px;
            color: var(--blue);
            background: var(--soft-blue);
            font-size: 11px;
            font-weight: 800;
        }

        .featured .ticket-tag {
            color: #b5f0f5;
            background: rgba(70, 182, 216, .14);
        }

        .ticket h3 {
            margin-bottom: 8px;
            font-size: 21px;
        }

        .ticket p {
            max-width: 280px;
            color: var(--muted);
            font-size: 14px;
        }

        .featured p {
            color: #b7c5d7;
        }

        .feature-section {
            background: var(--white);
        }

        .feature-layout {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            align-items: stretch;
            gap: 52px;
        }

        .feature-intro {
            padding: 16px 0;
        }

        .feature-intro h2 {
            margin-bottom: 18px;
            color: var(--navy);
            font-size: 35px;
            line-height: 1.3;
        }

        .feature-intro > p {
            margin-bottom: 28px;
            color: var(--muted);
            line-height: 1.9;
        }

        .check-list {
            display: grid;
            gap: 14px;
            list-style: none;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--ink);
            font-size: 14px;
        }

        .check-list li::before {
            display: grid;
            flex: 0 0 22px;
            width: 22px;
            height: 22px;
            place-items: center;
            border-radius: 50%;
            color: var(--blue);
            background: var(--soft-blue);
            content: "✓";
            font-size: 12px;
            font-weight: 900;
        }

        .feature-panels {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .feature-card {
            padding: 24px;
            border: 1px solid var(--line);
            border-radius: var(--radius-small);
            background: var(--paper);
            transition: border-color .2s ease, background .2s ease;
        }

        .feature-card:hover {
            border-color: #a9c9f7;
            background: var(--soft-blue);
        }

        .feature-card:nth-child(2) {
            margin-top: 25px;
        }

        .feature-card:nth-child(3) {
            margin-top: -25px;
        }

        .feature-card .number {
            display: block;
            margin-bottom: 18px;
            color: var(--cyan);
            font-size: 13px;
            font-weight: 900;
        }

        .feature-card h3 {
            margin-bottom: 8px;
            color: var(--navy);
            font-size: 18px;
        }

        .feature-card p {
            color: var(--muted);
            font-size: 13px;
            line-height: 1.7;
        }

        .stats-section {
            padding: 55px 0;
            color: var(--white);
            background: var(--navy);
        }

        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat {
            padding-left: 20px;
            border-left: 2px solid rgba(70, 182, 216, .6);
        }

        .stat strong {
            display: block;
            font-size: 31px;
            line-height: 1.2;
        }

        .stat span {
            display: block;
            margin-top: 7px;
            color: #a8b9cb;
            font-size: 13px;
        }

        .steps-section {
            background: var(--paper);
        }

        .steps-layout {
            display: grid;
            grid-template-columns: 1fr 1.15fr;
            gap: 70px;
            align-items: center;
        }

        .steps-visual {
            position: relative;
            min-height: 330px;
            padding: 30px;
            border-radius: 20px;
            background: #dcecff;
            overflow: hidden;
        }

        .steps-visual img {
            width: 100%;
            height: 270px;
            object-fit: cover;
            border-radius: 13px;
            filter: saturate(.84);
        }

        .steps-visual .image-label {
            position: absolute;
            right: 45px;
            bottom: 48px;
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--white);
            background: var(--navy);
            font-size: 13px;
            font-weight: 700;
        }

        .steps-list {
            display: grid;
            gap: 22px;
            list-style: none;
        }

        .steps-list li {
            display: grid;
            grid-template-columns: 44px 1fr;
            gap: 16px;
            align-items: start;
        }

        .step-no {
            display: grid;
            width: 44px;
            height: 44px;
            place-items: center;
            border-radius: 11px;
            color: var(--blue);
            background: var(--white);
            border: 1px solid var(--line);
            font-weight: 900;
            box-shadow: var(--shadow-small);
        }

        .steps-list h3 {
            margin-bottom: 3px;
            color: var(--navy);
            font-size: 17px;
        }

        .steps-list p {
            color: var(--muted);
            font-size: 14px;
        }

        .news-section {
            background: var(--white);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.35fr .65fr;
            gap: 48px;
        }

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

        .news-item {
            display: grid;
            grid-template-columns: 86px 1fr auto;
            gap: 20px;
            align-items: center;
            padding: 20px 0;
            border-bottom: 1px solid var(--line);
            transition: padding .2s ease, background .2s ease;
        }

        .news-item:hover {
            padding-right: 12px;
            padding-left: 12px;
            border-radius: 8px;
            background: var(--soft-blue);
        }

        .news-date {
            color: var(--blue);
            font-size: 12px;
            font-weight: 800;
        }

        .news-item h3 {
            margin-bottom: 4px;
            color: var(--navy);
            font-size: 16px;
        }

        .news-item p {
            color: var(--muted);
            font-size: 13px;
        }

        .news-arrow {
            color: var(--blue);
            font-size: 21px;
        }

        .recommend {
            padding: 25px;
            border-radius: var(--radius);
            color: var(--white);
            background: var(--navy);
            box-shadow: var(--shadow);
        }

        .recommend h3 {
            margin: 14px 0 10px;
            font-size: 22px;
            line-height: 1.35;
        }

        .recommend p {
            color: #b6c6d8;
            font-size: 14px;
        }

        .recommend-image {
            height: 135px;
            overflow: hidden;
            border-radius: 10px;
        }

        .recommend-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .recommend .button {
            width: 100%;
            margin-top: 22px;
        }

        .faq-section {
            background: #edf4fc;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px 42px;
        }

        .faq-item {
            padding: 22px 0;
            border-top: 1px solid #cad9ea;
        }

        .faq-item h3 {
            display: flex;
            align-items: flex-start;
            gap: 11px;
            color: var(--navy);
            font-size: 16px;
            line-height: 1.5;
        }

        .faq-item h3::before {
            flex: 0 0 auto;
            color: var(--blue);
            content: "问";
            font-size: 12px;
            font-weight: 900;
        }

        .faq-item p {
            margin: 10px 0 0 24px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .cta-section {
            padding: 70px 0;
            background: var(--white);
        }

        .cta-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 35px;
            padding: 39px 48px;
            border-radius: 18px;
            color: var(--white);
            background: var(--blue);
            box-shadow: 0 20px 42px rgba(35, 103, 209, .22);
        }

        .cta-panel h2 {
            margin-bottom: 7px;
            font-size: 30px;
            line-height: 1.3;
        }

        .cta-panel p {
            max-width: 650px;
            color: #d9eaff;
            font-size: 15px;
        }

        .cta-panel .button {
            flex: 0 0 auto;
            color: var(--navy);
            background: var(--white);
        }

        .cta-panel .button:hover {
            background: #e9f5ff;
        }

        .site-footer {
            padding: 55px 0 23px;
            color: #acbed3;
            background: var(--navy-deep);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.25fr .75fr .75fr;
            gap: 70px;
            padding-bottom: 42px;
        }

        .footer-brand {
            color: var(--white);
        }

        .footer-intro {
            max-width: 340px;
            margin-top: 17px;
            color: #91a6bd;
            font-size: 13px;
            line-height: 1.8;
        }

        .footer-column h3 {
            margin-bottom: 14px;
            color: var(--white);
            font-size: 14px;
        }

        .footer-column a {
            display: block;
            width: fit-content;
            margin: 7px 0;
            color: #91a6bd;
            font-size: 13px;
            transition: color .2s ease;
        }

        .footer-column a:hover {
            color: #8ddce8;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(177, 199, 222, .16);
            color: #71869e;
            font-size: 12px;
        }

        @media (max-width: 1024px) {
            .hero-grid,
            .feature-layout,
            .steps-layout {
                gap: 34px;
            }

            .hero-visual {
                min-height: 420px;
            }

            .hero-image {
                height: 380px;
            }

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

            .ticket.featured {
                grid-column: span 2;
            }

            .news-layout {
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(var(--container), calc(100% - 34px));
            }

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

            .menu-toggle {
                display: block;
            }

            .main-nav,
            .nav-actions {
                display: none;
            }

            .main-nav.open {
                position: absolute;
                top: 68px;
                right: 17px;
                left: 17px;
                display: flex;
                align-items: stretch;
                flex-direction: column;
                gap: 0;
                padding: 9px 18px;
                border: 1px solid var(--line);
                border-radius: 12px;
                background: var(--white);
                box-shadow: var(--shadow);
            }

            .main-nav.open a {
                padding: 12px 0;
                border-bottom: 1px solid var(--line);
            }

            .main-nav.open a:last-child {
                border-bottom: 0;
            }

            .main-nav.open a::after {
                display: none;
            }

            .hero {
                padding: 38px 0 52px;
            }

            .hero-grid,
            .feature-layout,
            .steps-layout,
            .news-layout {
                grid-template-columns: 1fr;
            }

            .hero-copy {
                padding: 0;
            }

            .hero-visual {
                min-height: 350px;
                padding-left: 12px;
            }

            .hero-image {
                width: 91%;
                height: 325px;
            }

            .visual-note {
                top: 0;
                left: 0;
            }

            .section {
                padding: 62px 0;
            }

            .section-heading {
                display: block;
                margin-bottom: 25px;
            }

            .section-heading h2 {
                margin-bottom: 12px;
            }

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

            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 27px 20px;
            }

            .steps-visual {
                order: 2;
            }

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

            .cta-panel {
                align-items: flex-start;
                flex-direction: column;
                padding: 32px 27px;
            }

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

            .footer-main .footer-brand-wrap {
                grid-column: span 2;
            }
        }

        @media (max-width: 520px) {
            h1 {
                font-size: 34px;
                letter-spacing: -1px;
            }

            .hero-text {
                font-size: 15px;
            }

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

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

            .hero-kpis {
                gap: 18px;
            }

            .kpi strong {
                font-size: 21px;
            }

            .hero-visual {
                min-height: 290px;
                padding: 20px 0 0;
            }

            .hero-image {
                width: 94%;
                height: 270px;
            }

            .visual-caption {
                right: 20px;
                bottom: 24px;
                left: 30px;
            }

            .visual-caption strong {
                font-size: 20px;
            }

            .visual-note {
                top: 0;
                width: 155px;
                padding: 11px;
            }

            .visual-note span {
                font-size: 11px;
            }

            .ticket-grid,
            .feature-panels {
                grid-template-columns: 1fr;
            }

            .ticket.featured {
                grid-column: auto;
            }

            .feature-card:nth-child(2),
            .feature-card:nth-child(3) {
                margin-top: 0;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }

            .stat {
                padding-left: 12px;
            }

            .stat strong {
                font-size: 25px;
            }

            .news-item {
                grid-template-columns: 1fr auto;
                gap: 4px 12px;
            }

            .news-date {
                grid-column: span 2;
            }

            .news-item p {
                display: -webkit-box;
                overflow: hidden;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 1;
            }

            .recommend {
                padding: 20px;
            }

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

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

            .footer-bottom {
                align-items: flex-start;
                flex-direction: column;
                gap: 5px;
            }
        }