/* roulang page: index */
:root {
            --main-bg: #F7F9FB;
            --page-bg: #ECF3F7;
            --surface: #FFFFFF;
            --brand: #2F7E9E;
            --brand-dark: #2B6C8F;
            --brand-soft: #E6F2F6;
            --ink: #1B2733;
            --text-second: #52616E;
            --text-muted: #94A7B4;
            --line: rgba(31, 74, 99, .12);
            --line-strong: rgba(31, 74, 99, .2);
            --accent: #D9784D;
            --radius-xl: 16px;
            --radius-md: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px -15px rgba(31, 74, 99, .18);
            --shadow-hover: 0 16px 36px -16px rgba(31, 74, 99, .26);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--main-bg);
            color: var(--ink);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.75;
            letter-spacing: .01em;
            font-size: 16px;
        }

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

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

        a,
        button,
        input {
            transition: all .22s ease;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .site-container {
            max-width: 1220px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .segment {
            padding: 84px 0;
        }

        @media (max-width: 767px) {
            .segment {
                padding: 54px 0;
            }
        }

        .bg-soft {
            background: var(--page-bg);
        }

        .section-overline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-overline:before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--ink);
        }

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

        /* ===== header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 70;
            background: rgba(247, 249, 251, .9);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }

        .logo-lockup {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-mark {
            width: 44px;
            height: 44px;
            background: var(--brand);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px 12px 12px 4px;
            font-size: 17px;
            font-weight: 800;
            letter-spacing: .03em;
            flex-shrink: 0;
        }

        .logo-text {
            line-height: 1.3;
        }

        .logo-name {
            display: block;
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: .01em;
        }

        .logo-tag {
            display: block;
            font-size: 12px;
            color: var(--text-second);
            margin-top: 1px;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-pill);
            padding: 4px 6px;
            height: 40px;
        }

        .search-box input {
            border: 0;
            outline: none;
            background: transparent;
            width: 160px;
            font-size: 13px;
            padding-left: 8px;
            color: var(--ink);
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-icon {
            color: var(--text-second);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 4px;
            border-radius: 50%;
        }

        .channel-row {
            border-top: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 4px 0;
        }

        .channel-list {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            padding: 6px 0;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .channel-list::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            color: var(--text-second);
            border: 1px solid transparent;
            font-weight: 500;
        }

        .channel-link:hover {
            background: var(--brand-soft);
            color: var(--brand-dark);
        }

        .channel-link.active {
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-weight: 700;
            border-color: rgba(47, 126, 158, .16);
        }

        .menu-burger {
            width: 40px;
            height: 40px;
            display: none;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-pill);
            border: 1px solid var(--line);
            background: #fff;
            cursor: pointer;
        }

        .menu-burger svg {
            width: 20px;
            height: 20px;
            stroke: var(--ink);
        }

        @media (max-width: 767px) {
            .search-box {
                display: none;
            }
            .channel-row {
                padding: 8px 0;
            }
            .channel-list {
                gap: 6px;
            }
            .menu-burger {
                display: inline-flex;
            }
        }

        /* ===== hero ===== */
        .hero {
            background: var(--main-bg);
            padding: 92px 0 76px;
            position: relative;
            overflow: hidden;
        }

        .hero:before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: repeating-linear-gradient(45deg, rgba(47, 126, 158, .025) 0, rgba(47, 126, 158, .025) 1px, transparent 1px, transparent 10px);
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 6fr 4fr;
            gap: 64px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-overline {
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: .1em;
            border: 1px solid rgba(217, 120, 77, .35);
            background: rgba(217, 120, 77, .06);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 22px;
        }

        .hero-title {
            font-size: clamp(2.4rem, 4.2vw, 3.4rem);
            font-weight: 800;
            line-height: 1.18;
            color: var(--ink);
            margin: 0 0 18px;
            letter-spacing: .01em;
        }

        .hero-title span {
            color: var(--brand);
        }

        .hero-sub {
            font-size: 16px;
            color: var(--text-second);
            max-width: 480px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 22px;
            line-height: 1;
            cursor: pointer;
            border: 1px solid transparent;
            text-align: center;
            min-height: 44px;
        }

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

        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: var(--shadow-card);
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: #fff;
            color: var(--brand-dark);
            border-color: var(--line-strong);
        }

        .btn-outline:hover {
            background: var(--brand-soft);
            border-color: var(--brand);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-card);
        }

        .btn-accent:hover {
            background: #c66a43;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-light {
            background: #fff;
            color: var(--brand-dark);
            border-color: var(--line-strong);
        }

        .btn-light:hover {
            background: var(--brand-soft);
            border-color: var(--brand);
        }

        .hero-anchors {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-anchors a {
            background: rgba(255, 255, 255, .82);
            border: 1px solid var(--line);
            border-radius: var(--radius-pill);
            padding: 7px 15px;
            font-size: 13px;
            color: var(--text-second);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-anchors a:hover {
            border-color: var(--brand);
            color: var(--brand-dark);
            background: var(--surface);
        }

        .hero-media-wrap {
            position: relative;
        }

        .hero-media-wrap:after {
            content: "";
            position: absolute;
            inset: 14px;
            border: 1px solid rgba(47, 126, 158, .22);
            border-radius: 14px;
            pointer-events: none;
            z-index: 1;
        }

        .hero-media-frame {
            position: relative;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            background: #fff;
            border: 1px solid rgba(255, 255, 255, .4);
        }

        .hero-media-frame img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        @media (max-width: 767px) {
            .hero-media-frame img {
                height: 300px;
            }
        }

        .hero-float-card {
            position: absolute;
            right: -12px;
            bottom: 30px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            box-shadow: var(--shadow-card);
            padding: 18px 20px;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 16px;
            min-width: 220px;
        }

        .hero-float-card .divider {
            width: 1px;
            height: 28px;
            background: var(--line);
        }

        .float-unit strong {
            display: block;
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.2;
        }

        .float-unit span {
            font-size: 12px;
            color: var(--text-second);
        }

        @media (max-width: 767px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero {
                padding: 56px 0 48px;
            }
            .hero-float-card {
                right: 8px;
                bottom: 16px;
                padding: 14px;
                min-width: 180px;
            }
            .hero-title {
                font-size: 2.1rem;
            }
        }

        /* ===== catalog ===== */
        .catalog-seg {
            background: var(--page-bg);
        }

        .catalog-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 22px;
            margin-top: 28px;
        }

        .catalog-card-main {
            background: var(--surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            min-height: 330px;
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .catalog-card-main:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 126, 158, .32);
        }

        .catalog-cover {
            width: 100%;
            height: 210px;
            background-size: cover;
            background-position: center;
            background-color: var(--brand-soft);
            position: relative;
        }

        .catalog-cover:after {
            content: "";
            position: absolute;
            inset: 10px;
            border: 1px solid rgba(255, 255, 255, .42);
            border-radius: 10px;
            pointer-events: none;
        }

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

        .catalog-body h3 {
            font-size: 21px;
            font-weight: 700;
            margin: 8px 0 8px;
        }

        .catalog-body p {
            color: var(--text-second);
            font-size: 14px;
            line-height: 1.8;
            margin: 0 0 18px;
            flex: 1;
        }

        .catalog-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--brand-dark);
            font-size: 14px;
        }

        .catalog-card-main:hover .catalog-link {
            gap: 14px;
        }

        .catalog-subgrid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 14px;
        }

        .catalog-subcard {
            background: rgba(255, 255, 255, .72);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            min-height: 130px;
            transition: transform .18s ease, background .2s;
        }

        .catalog-subcard:hover {
            transform: translateY(-2px);
            background: var(--surface);
            border-color: rgba(47, 126, 158, .25);
        }

        .catalog-subcard span {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: .04em;
            font-weight: 600;
        }

        .catalog-subcard strong {
            font-size: 16px;
            margin-top: 6px;
            color: var(--ink);
            font-weight: 700;
        }

        @media (max-width: 767px) {
            .catalog-grid {
                grid-template-columns: 1fr;
            }
            .catalog-subgrid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== featured ===== */
        .featured-seg {
            background: var(--main-bg);
        }

        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 34px;
        }

        .more-link {
            color: var(--brand-dark);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
        }

        .more-link:hover {
            color: var(--accent);
        }

        .featured-layout {
            display: grid;
            grid-template-columns: 1.02fr .98fr;
            gap: 28px;
            align-items: stretch;
        }

        .featured-main {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            position: relative;
            display: flex;
            flex-direction: column;
            min-height: 440px;
            transition: transform .22s ease, box-shadow .22s ease;
        }

        .featured-main:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .featured-main-cover {
            height: 230px;
            background-size: cover;
            background-position: center;
            background-color: var(--page-bg);
            position: relative;
        }

        .featured-main-cover:before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0) 38%, rgba(27, 39, 51, .22) 100%);
        }

        .featured-main-body {
            padding: 26px 28px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .badge {
            align-self: flex-start;
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 5px 12px;
            line-height: 1.2;
        }

        .badge.accent {
            background: rgba(217, 120, 77, .12);
            color: #b55a33;
        }

        .featured-main h3 {
            font-size: 22px;
            line-height: 1.45;
            color: var(--ink);
            margin: 14px 0 10px;
            font-weight: 700;
        }

        .featured-main p {
            color: var(--text-second);
            font-size: 14px;
            line-height: 1.85;
            margin: 0 0 20px;
        }

        .featured-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: auto;
        }

        .featured-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .featured-list-item {
            display: block;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-xl);
            padding: 18px 22px;
            min-height: 96px;
            transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
        }

        .featured-list-item:hover {
            transform: translateY(-2px);
            border-color: rgba(47, 126, 158, .3);
            box-shadow: var(--shadow-card);
        }

        .featured-list-item .small-head {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            margin: 7px 0 4px;
            line-height: 1.5;
        }

        .featured-list-item p {
            font-size: 13px;
            color: var(--text-second);
            line-height: 1.6;
            margin: 0;
        }

        @media (max-width: 900px) {
            .featured-layout {
                grid-template-columns: 1fr;
            }
        }

        /* ===== dynamic cms list ===== */
        .cms-seg {
            background: var(--page-bg);
        }

        .cms-list {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-xl);
            padding: 6px;
            box-shadow: var(--shadow-card);
        }

        .cms-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 24px 20px;
            border-radius: 12px;
            border-bottom: 1px solid var(--line);
        }

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

        .cms-item:hover {
            background: #FAFDFF;
        }

        .cms-item:hover .cms-arrow {
            transform: translateX(4px);
            color: var(--accent);
        }

        .cms-date {
            width: 86px;
            flex-shrink: 0;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 4px;
            line-height: 1.5;
            text-align: left;
        }

        .cms-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .cms-meta .badge {
            font-size: 11px;
            padding: 4px 10px;
        }

        .cms-title {
            font-size: 18px;
            color: var(--ink);
            font-weight: 700;
            line-height: 1.5;
            margin: 0 0 6px;
        }

        .cms-item:hover .cms-title {
            color: var(--brand);
        }

        .cms-desc {
            color: var(--text-second);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .cms-arrow {
            margin-left: auto;
            color: var(--brand);
            font-size: 22px;
            font-weight: 500;
            opacity: .8;
            transition: transform .18s ease, color .18s ease;
        }

        .cms-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            padding: 52px 20px;
            text-align: center;
            color: var(--text-muted);
        }

        .cms-empty-icon {
            width: 44px;
            height: 44px;
            border-radius: 16px;
            background: var(--brand-soft);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 21px;
            font-weight: 700;
        }

        .cms-empty p {
            font-size: 14px;
            margin: 0;
        }

        @media (max-width: 640px) {
            .cms-item {
                flex-direction: column;
                gap: 10px;
            }
            .cms-date {
                width: auto;
                font-size: 12px;
            }
            .cms-title {
                font-size: 16px;
            }
        }

        /* ===== recommend ===== */
        .reco-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 24px;
        }

        .reco-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            min-height: 230px;
            display: flex;
            flex-direction: column;
            transition: transform .2s ease, box-shadow .2s ease;
        }

        .reco-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .reco-cover {
            height: 120px;
            background-size: cover;
            background-position: center;
            background-color: var(--page-bg);
        }

        .reco-body {
            padding: 18px 20px 20px;
        }

        .reco-reason {
            color: var(--text-muted);
            font-size: 12px;
            margin-bottom: 4px;
        }

        .reco-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin: 0;
            line-height: 1.5;
        }

        @media (max-width: 767px) {
            .reco-cards {
                grid-template-columns: 1fr;
            }
            .reco-cover {
                height: 160px;
            }
        }

        /* ===== faq ===== */
        .faq-list {
            max-width: 820px;
            margin: 18px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 0 22px;
        }

        .faq-item details summary {
            list-style: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            padding: 18px 44px 18px 0;
            position: relative;
        }

        .faq-item details summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:after {
            content: "";
            position: absolute;
            right: 2px;
            top: 22px;
            width: 13px;
            height: 13px;
            border: 2px solid var(--brand);
            border-radius: 3px;
            background: transparent;
            transition: transforms .2s ease;
        }

        .faq-item summary:before {
            content: "";
            position: absolute;
            width: 7px;
            height: 2px;
            background: var(--brand);
            right: 5px;
            top: 28px;
            z-index: 1;
            border-radius: 2px;
        }

        .faq-item details[open] summary:after {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 0 20px;
            color: var(--text-second);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ===== cta ===== */
        .cta-seg {
            background: var(--main-bg);
        }

        .cta-box {
            background: var(--brand-soft);
            border: 1px solid rgba(47, 126, 158, .18);
            border-radius: 28px;
            padding: 58px 44px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box:after {
            content: "";
            position: absolute;
            width: 180px;
            height: 180px;
            background: rgba(47, 126, 158, .05);
            right: -60px;
            top: -60px;
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--ink);
            margin: 0 0 16px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-second);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 767px) {
            .cta-box {
                padding: 36px 22px;
                border-radius: 20px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
        }

        /* ===== footer ===== */
        .site-footer {
            background: #1E3643;
            color: rgba(255, 255, 255, .78);
            padding: 54px 0 0;
            line-height: 1.7;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 38px;
            padding-bottom: 44px;
        }

        .footer-brand .logo-mark {
            margin-bottom: 14px;
            background: #fff;
            color: var(--brand-dark);
        }

        .footer-brand .logo-name {
            color: #fff;
        }

        .footer-brand p {
            margin: 12px 0 0;
            color: rgba(255, 255, 255, .6);
            font-size: 13px;
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 16px;
        }

        .footer-col a {
            display: inline-block;
            color: rgba(255, 255, 255, .65);
            font-size: 13px;
            padding: 4px 0;
            margin-bottom: 4px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, .45);
        }

        @media (max-width: 900px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .footer-top {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --page-bg: #F7F9FB;
            --tint-bg: #ECF3F7;
            --surface: #FFFFFF;
            --brand: #2B6C8F;
            --brand-dark: #1F5471;
            --brand-soft: #E4F0F6;
            --accent: #C96A47;
            --ink: #1B2733;
            --text-2: #52616E;
            --muted: #94A7B4;
            --line: rgba(43, 108, 143, .16);
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow-card: 0 10px 30px -15px rgba(31, 74, 99, .18);
            --container: 1240px;
            --space-section: 76px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            background: var(--page-bg);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.75;
            letter-spacing: .01em;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button, input {
            font-family: inherit;
        }

        .site-container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 17px 0 14px;
        }

        .logo-lockup {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            flex: 0 0 44px;
            border-radius: 10px;
            background: var(--brand);
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            letter-spacing: .04em;
            text-transform: uppercase;
            box-shadow: 0 6px 16px -8px rgba(43, 108, 143, .5);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            min-width: 0;
            line-height: 1.3;
        }

        .logo-name {
            font-weight: 800;
            font-size: 18px;
            color: var(--ink);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .logo-tag {
            font-size: 12px;
            color: var(--text-2);
            font-weight: 400;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 9px;
            width: 232px;
            height: 42px;
            padding: 0 14px;
            background: #fff;
            border: 1px solid #C4D1DA;
            border-radius: 999px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .search-box:focus-within {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(43, 108, 143, .12);
        }

        .search-box input {
            border: 0;
            outline: none;
            background: transparent;
            width: 100%;
            font-size: 14px;
            color: var(--ink);
        }

        .search-box .search-icon {
            display: inline-flex;
            color: var(--muted);
        }

        .menu-burger {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            color: var(--brand-dark);
            cursor: pointer;
        }

        .channel-row {
            border-top: 1px solid rgba(43, 108, 143, .1);
            padding: 10px 0;
        }

        .channel-list {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            scrollbar-width: none;
            padding-bottom: 2px;
        }

        .channel-list::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid transparent;
            font-size: 14px;
            color: #3A5568;
            transition: background .2s ease, color .2s ease, border-color .2s ease;
        }

        .channel-link:hover {
            background: #EDF3F6;
            color: var(--brand-dark);
        }

        .channel-link.active {
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-weight: 700;
            border-color: rgba(43, 108, 143, .18);
        }

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

        .section-head {
            max-width: 780px;
            margin-bottom: 42px;
        }

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

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin: 0 0 14px;
            padding: 5px 13px;
            border-radius: 999px;
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .02em;
        }

        .eyebrow-thin {
            background: #F9EDE8;
            color: #A4583B;
        }

        h1, h2, h3, h4, h5 {
            margin: 0 0 .55em;
            color: var(--ink);
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: 0;
        }

        h1 {
            font-size: clamp(2.1rem, 3.1vw + .8rem, 3.2rem);
            line-height: 1.22;
            margin-bottom: 22px;
        }

        h2 {
            font-size: clamp(1.6rem, 1.5vw + .9rem, 2.1rem);
            margin-bottom: 18px;
        }

        h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        p {
            margin: 0 0 1em;
        }

        .lead-copy {
            color: var(--text-2);
            font-size: 16px;
            line-height: 1.85;
        }

        .lead-large {
            font-size: 17px;
            color: var(--text-2);
            line-height: 1.85;
        }

        .page-hero {
            background: #EDF3F6;
            border-bottom: 1px solid var(--line);
            padding: 46px 0 66px;
            position: relative;
            overflow: hidden;
        }

        .breadcrumbs {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            margin: 0 0 30px;
            font-size: 13px;
            color: #647B8C;
        }

        .breadcrumbs a {
            color: #647B8C;
        }

        .breadcrumbs span {
            margin: 0 7px;
            color: #A6B6C2;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.08fr .92fr;
            gap: 48px;
            align-items: center;
        }

        .hero-copy {
            max-width: 660px;
        }

        .hero-copy .eyebrow {
            background: #DDEBF2;
        }

        .hero-teaser {
            font-size: 18px;
            line-height: 1.85;
            color: #445B6A;
            max-width: 560px;
            margin-bottom: 32px;
        }

        .hero-cta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 8px;
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 0 28px;
            border-radius: 10px;
            border: 1px solid transparent;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
            text-decoration: none;
        }

        .button:focus-visible,
        .channel-link:focus-visible,
        a:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 108, 143, .35);
        }

        .button-primary {
            background: var(--brand);
            color: #fff !important;
            box-shadow: 0 9px 22px -16px rgba(31, 74, 99, .65);
        }

        .button-primary:hover {
            background: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 14px 26px -16px rgba(31, 74, 99, .5);
        }

        .button-secondary {
            background: #fff;
            color: var(--brand-dark) !important;
            border-color: rgba(43, 108, 143, .35);
        }

        .button-secondary:hover {
            border-color: var(--brand);
            background: #F3F7FA;
            transform: translateY(-2px);
        }

        .button-accent {
            background: var(--accent);
            color: #fff !important;
        }

        .button-accent:hover {
            background: #B95D3D;
            transform: translateY(-2px);
        }

        .hero-visual {
            position: relative;
            min-height: 390px;
            border-radius: 18px;
            background-color: #DCE7ED;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            box-shadow: 0 24px 42px -26px rgba(31, 74, 99, .3);
        }

        .hero-visual-card {
            position: absolute;
            right: 16px;
            bottom: 16px;
            left: 16px;
            background: rgba(255, 255, 255, .92);
            border: 1px solid rgba(255, 255, 255, .7);
            border-radius: 14px;
            padding: 16px 18px;
            backdrop-filter: blur(6px);
            box-shadow: 0 10px 24px -24px rgba(31, 74, 99, .5);
        }

        .hero-visual-card strong {
            display: block;
            font-size: 16px;
            margin-bottom: 5px;
            color: var(--ink);
        }

        .hero-visual-card span {
            font-size: 13px;
            color: #5A6B78;
            line-height: 1.6;
        }

        .hero-metrics {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 26px;
            border-top: 1px solid rgba(43, 108, 143, .14);
            padding-top: 22px;
        }

        .metric-item {
            display: flex;
            flex-direction: column;
            gap: 3px;
        }

        .metric-item strong {
            font-size: 15px;
            color: var(--brand-dark);
            font-weight: 800;
        }

        .metric-item span {
            font-size: 13px;
            color: var(--text-2);
        }

        .surface-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 32px;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 38px;
            align-items: start;
            background: #FFFFFF;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 38px;
            box-shadow: var(--shadow-card);
        }

        .intro-heading h3 {
            font-size: 1.35rem;
            margin-bottom: 12px;
        }

        .intro-heading p {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .intro-points {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 14px;
        }

        .intro-points li {
            position: relative;
            padding-left: 25px;
            color: #3A5568;
            font-size: 15px;
            line-height: 1.7;
        }

        .intro-points li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 9px;
            width: 10px;
            height: 10px;
            border-radius: 3px;
            background: var(--brand-soft);
            border: 1px solid rgba(43, 108, 143, .4);
        }

        .feature-edit-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 40px;
            align-items: center;
        }

        .feature-media {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            background: #DDE7ED;
            box-shadow: var(--shadow-card);
            min-height: 330px;
        }

        .feature-media img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        .feature-media-badge {
            position: absolute;
            left: 18px;
            top: 18px;
            display: inline-flex;
            align-items: center;
            background: rgba(255, 255, 255, .92);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            color: var(--brand-dark);
            font-weight: 700;
            box-shadow: 0 6px 16px -12px rgba(31, 74, 99, .3);
        }

        .story-list {
            display: grid;
            gap: 10px;
        }

        .story-item {
            background: #FFFFFF;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 18px 20px;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }

        .story-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px -18px rgba(31, 74, 99, .22);
            border-color: rgba(43, 108, 143, .3);
        }

        .story-item h3 {
            font-size: 16px;
            margin-bottom: 5px;
            color: var(--ink);
        }

        .story-item p {
            margin: 0;
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
        }

        .list-topline {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            margin-bottom: 14px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-dark) !important;
        }

        .guide-panel {
            background: #FFFFFF;
            border: 1px solid var(--line);
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .guide-row {
            display: grid;
            grid-template-columns: 76px 1fr 42px;
            gap: 22px;
            align-items: center;
            padding: 24px 28px;
            border-bottom: 1px solid rgba(43, 108, 143, .1);
            transition: background .2s ease;
        }

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

        .guide-row:hover {
            background: #F8FAFC;
        }

        .guide-index {
            font-weight: 800;
            font-size: 15px;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-soft);
        }

        .guide-copy strong {
            display: block;
            font-size: 16px;
            margin-bottom: 3px;
            color: var(--ink);
        }

        .guide-copy span {
            display: block;
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.65;
        }

        .guide-arrow {
            display: inline-flex;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            background: #F0F4F7;
            color: var(--brand);
            font-size: 18px;
        }

        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .scene-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 28px 30px;
            box-shadow: 0 6px 20px -20px rgba(31, 74, 99, .15);
            min-height: 150px;
        }

        .scene-card h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            margin-bottom: 10px;
        }

        .scene-card h3 span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-soft);
            border-radius: 8px;
            width: 32px;
            height: 28px;
            font-size: 13px;
            color: var(--brand-dark);
            font-weight: 800;
        }

        .scene-card p {
            color: var(--text-2);
            margin: 0;
            font-size: 15px;
            line-height: 1.8;
        }

        .section-tint {
            background: var(--tint-bg);
            border-top: 1px solid rgba(43, 108, 143, .08);
            border-bottom: 1px solid rgba(43, 108, 143, .08);
        }

        .section-white {
            background: #fff;
        }

        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .faq-item[open] {
            border-color: rgba(43, 108, 143, .28);
            box-shadow: 0 10px 30px -24px rgba(31, 74, 99, .2);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            list-style: none;
            padding: 19px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            transition: background .2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background: #F9FBFD;
        }

        .faq-item .faq-icon {
            position: relative;
            flex: 0 0 18px;
            width: 18px;
            height: 18px;
            display: inline-block;
            border-radius: 5px;
            background: var(--brand-soft);
            transition: background .2s ease, transform .2s ease;
        }

        .faq-item .faq-icon::before,
        .faq-item .faq-icon::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            width: 9px;
            height: 1.5px;
            background: var(--brand-dark);
            transform: translate(-50%, -50%);
            border-radius: 2px;
        }

        .faq-item .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
        }

        .faq-item[open] .faq-icon {
            background: var(--brand);
        }

        .faq-item[open] .faq-icon::after {
            transform: translate(-50%, -50%) rotate(0deg);
        }

        .faq-item[open] .faq-icon::before {
            background: #fff;
        }

        .faq-answer {
            padding: 2px 24px 22px;
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-answer p {
            margin: 0;
        }

        .cta-panel {
            background: var(--brand-soft);
            border: 1px solid rgba(43, 108, 143, .13);
            border-radius: 18px;
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1.2fr .8fr;
            gap: 30px;
            align-items: center;
        }

        .cta-panel h2 {
            margin-bottom: 10px;
            font-size: 1.8rem;
        }

        .cta-panel p {
            color: #455B6A;
            font-size: 15px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: flex-end;
        }

        .site-footer {
            margin-top: 76px;
            background: #172E3D;
            color: rgba(255, 255, 255, .72);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding: 54px 0 36px;
        }

        .footer-brand .logo-mark {
            margin-bottom: 14px;
            background: #fff;
            color: var(--brand);
        }

        .footer-brand p {
            margin: 0;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .62);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 14px;
            font-weight: 700;
        }

        .footer-col a {
            color: rgba(255, 255, 255, .66);
            font-size: 14px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 18px 0 20px;
            font-size: 13px;
            text-align: left;
            color: rgba(255, 255, 255, .48);
        }

        @media (max-width: 1024px) {
            :root {
                --space-section: 60px;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }

            .hero-copy {
                max-width: 680px;
            }

            .hero-visual {
                min-height: 330px;
            }

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

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

            .cta-actions {
                justify-content: flex-start;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            .brand-row {
                gap: 10px;
                padding-top: 14px;
            }

            .search-box {
                display: none;
            }

            .menu-burger {
                display: inline-flex;
            }

            .logo-name {
                font-size: 16px;
            }

            .logo-tag {
                max-width: 160px;
            }

            .site-header .channel-row {
                display: none;
            }

            .site-header.menu-open .channel-row {
                display: block;
                border-top: 1px solid var(--line);
                padding: 10px 0;
            }

            .site-header.menu-open .channel-list {
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                padding: 4px 0 8px;
            }

            .site-header.menu-open .channel-link {
                justify-content: center;
                text-align: center;
            }

            .section-block {
                --space-section: 52px;
            }

            .page-hero {
                padding: 30px 0 50px;
            }

            .hero-visual {
                min-height: 270px;
            }

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

            .intro-grid {
                padding: 24px;
            }

            .guide-row {
                grid-template-columns: 1fr;
                gap: 14px;
                padding: 20px;
            }

            .guide-arrow {
                display: none;
            }

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

            .cta-panel {
                padding: 32px 24px;
            }

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

            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding-left: 18px;
                padding-right: 18px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 22px;
            }
        }

        @media (max-width: 520px) {
            .site-container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .logo-name {
                font-size: 15.5px;
            }

            .logo-tag {
                font-size: 11px;
            }

            h1 {
                font-size: 1.7rem;
                line-height: 1.35;
            }

            .hero-metrics {
                gap: 18px;
            }

            .feature-media img {
                height: 230px;
            }

            .guide-panel {
                border-radius: 12px;
            }
        }

/* roulang page: article */
:root{
    --page:#F7F9FB;
    --surface:#FFFFFF;
    --section:#ECF3F7;
    --brand:#2F7E9E;
    --brand-dark:#2B6C8F;
    --brand-soft:#E3F1F5;
    --ink:#1B2733;
    --text-2:#52616E;
    --muted:#94A7B4;
    --line:rgba(31,74,99,.14);
    --accent:#C86A4A;
    --radius-lg:16px;
    --radius-md:8px;
    --shadow:0 10px 30px -15px rgba(31,74,99,.18);
    --shadow-hover:0 18px 36px -16px rgba(31,74,99,.24);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
    margin:0;
    background:var(--page);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
    line-height:1.75;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-dark);}
button,input,textarea,select{font-family:inherit;}
.site-container{
    max-width:1240px;
    margin-inline:auto;
    padding-inline:24px;
}
.site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.9);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
}
.brand-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:16px 0 12px;
}
.logo-lockup{
    display:flex;
    align-items:center;
    gap:12px;
    min-width:0;
}
.logo-mark{
    flex:0 0 auto;
    width:44px;
    height:44px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:var(--brand);
    color:#fff;
    font-size:18px;
    font-weight:800;
    border-radius:12px;
    box-shadow:0 6px 14px -6px rgba(47,126,158,.45);
}
.logo-text{
    display:flex;
    flex-direction:column;
    line-height:1.28;
    min-width:0;
}
.logo-name{
    font-size:17px;
    font-weight:700;
    color:var(--ink);
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}
.logo-tag{
    font-size:12px;
    color:var(--muted);
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}
.header-tools{
    display:flex;
    align-items:center;
    gap:14px;
}
.search-box{
    position:relative;
    display:flex;
    align-items:center;
}
.search-box input{
    width:220px;
    height:42px;
    border:1px solid var(--line);
    border-radius:999px;
    background:#fff;
    padding:0 40px 0 16px;
    font-size:14px;
    color:var(--ink);
    transition:border-color .2s,box-shadow .2s;
}
.search-box input::placeholder{color:var(--muted);}
.search-box input:focus{
    outline:none;
    border-color:var(--brand);
    box-shadow:0 0 0 3px rgba(47,126,158,.14);
}
.search-icon{
    position:absolute;
    right:14px;
    display:flex;
    color:var(--muted);
    pointer-events:none;
}
.menu-burger{
    display:none;
    width:44px;
    height:44px;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    background:#fff;
    border-radius:10px;
    color:var(--ink);
    cursor:pointer;
    transition:border-color .2s,background .2s;
    padding:0;
}
.menu-burger:hover{border-color:var(--brand);background:var(--brand-soft);}
.menu-burger svg{width:22px;height:22px;}
.channel-row{
    border-top:1px solid var(--line);
    overflow:hidden;
}
.channel-list{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding:10px 0 14px;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
}
.channel-list::-webkit-scrollbar{display:none;}
.channel-link{
    display:inline-flex;
    align-items:center;
    white-space:nowrap;
    border:1px solid transparent;
    padding:8px 20px;
    border-radius:999px;
    color:var(--text-2);
    font-size:14px;
    font-weight:500;
    transition:background .2s,border-color .2s,color .2s;
}
.channel-link:hover{
    color:var(--brand-dark);
    background:var(--section);
    border-color:var(--line);
}
.channel-link.active{
    background:var(--brand-soft);
    color:var(--brand-dark);
    border-color:rgba(47,126,158,.16);
    font-weight:700;
}
.page-main{padding:24px 0 80px;}
.article-layout{
    max-width:940px;
    margin-inline:auto;
}
.breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px 10px;
    font-size:13px;
    color:var(--muted);
    padding:16px 0 8px;
}
.breadcrumb a{color:var(--text-2);transition:color .2s;}
.breadcrumb a:hover{color:var(--brand);}
.bc-sep{color:var(--line);}
.bc-current{
    display:inline-block;
    max-width:260px;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    color:var(--text-2);
}
.article-header{
    padding:18px 0 10px;
}
.badge{
    display:inline-flex;
    gap:8px;
    align-items:center;
    padding:6px 16px;
    border-radius:999px;
    background:var(--brand-soft);
    color:var(--brand-dark);
    font-size:13px;
    font-weight:600;
}
.article-header h1{
    font-size:clamp(1.9rem,3.2vw,2.5rem);
    line-height:1.3;
    font-weight:800;
    color:var(--ink);
    margin:18px 0 6px;
    letter-spacing:.005em;
}
.article-meta{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
    padding:16px 0;
    border-top:1px dashed var(--line);
    border-bottom:1px dashed var(--line);
    color:var(--text-2);
    font-size:14px;
    margin-top:18px;
}
.meta-item{
    display:inline-flex;
    align-items:center;
    gap:7px;
}
.meta-item svg{width:16px;height:16px;}
.meta-share{
    margin-left:auto;
    background:none;
    border:none;
    color:var(--brand);
    font-size:14px;
    font-weight:600;
    cursor:pointer;
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 0;
    transition:color .2s;
}
.meta-share:hover{color:var(--brand-dark);text-decoration:underline;}
.meta-share svg{width:16px;height:16px;}
.article-body{
    max-width:780px;
    margin-inline:auto;
    padding:36px 0 20px;
}
.article-body .content{
    color:#24313D;
    font-size:17px;
}
.content p{
    margin:0 0 1.7em;
    line-height:1.85;
    letter-spacing:.012em;
}
.content h2{
    font-size:1.5rem;
    line-height:1.45;
    font-weight:750;
    color:var(--ink);
    margin:2.4em 0 .9em;
}
.content h2::before{
    content:"";
    display:block;
    width:34px;
    height:4px;
    border-radius:999px;
    background:var(--brand);
    margin-bottom:12px;
}
.content h3{
    font-size:1.24rem;
    line-height:1.5;
    color:var(--ink);
    font-weight:700;
    margin:2.2em 0 .7em;
}
.content h4{
    font-size:1.06rem;
    color:var(--ink);
    font-weight:700;
    margin:1.8em 0 .6em;
}
.content blockquote{
    margin:28px 0;
    padding:18px 22px;
    background:var(--section);
    border-left:4px solid var(--brand);
    border-radius:0 14px 14px 0;
    color:var(--text-2);
    font-size:.96em;
}
.content img{
    max-width:100%;
    height:auto;
    border-radius:var(--radius-lg);
    margin:30px 0;
    box-shadow:var(--shadow);
}
.content a{
    color:var(--brand-dark);
    text-decoration:underline;
    text-underline-offset:3px;
}
.content ul,.content ol{
    margin:0 0 1.6em;
    padding-left:1.5em;
}
.content li{
    margin-bottom:.4em;
    line-height:1.8;
}
.content table{
    width:100%;
    border-collapse:collapse;
    margin:28px 0;
    font-size:.94em;
}
.content th,.content td{
    border:1px solid var(--line);
    padding:10px 14px;
    text-align:left;
    background:#fff;
}
.content th{
    background:var(--section);
    color:var(--ink);
    font-weight:600;
}
.content code{
    background:var(--section);
    border:1px solid var(--line);
    padding:2px 8px;
    border-radius:6px;
    font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
    font-size:.9em;
}
.article-footer{
    max-width:780px;
    margin-inline:auto;
    padding:8px 0 0;
}
.post-nav{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:14px;
    padding:30px 0 8px;
    border-top:1px solid var(--line);
}
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:var(--radius-md);
    padding:11px 22px;
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;}
.btn:focus-visible,.btn-hollow:focus-visible,.btn-accent:focus-visible{
    outline:none;
    box-shadow:0 0 0 3px rgba(47,126,158,.25);
}
.btn-primary{
    background:var(--brand);
    color:#fff;
    box-shadow:0 8px 18px -8px rgba(47,126,158,.5);
}
.btn-primary:hover{
    background:var(--brand-dark);
    color:#fff;
    transform:translateY(-1px);
    box-shadow:0 12px 22px -10px rgba(47,126,158,.55);
}
.btn-primary:active,.btn-accent:active,.btn-hollow:active{
    transform:translateY(1px);
}
.btn-hollow{
    background:#fff;
    border-color:var(--line);
    color:var(--brand-dark);
}
.btn-hollow:hover{
    border-color:var(--brand);
    color:var(--brand-dark);
    background:var(--brand-soft);
    transform:translateY(-1px);
}
.btn-accent{
    background:var(--accent);
    border-color:var(--accent);
    color:#fff;
    box-shadow:0 8px 18px -8px rgba(200,106,74,.45);
}
.btn-accent:hover{
    background:#b95d3f;
    border-color:#b95d3f;
    color:#fff;
    transform:translateY(-1px);
}
.empty-state{
    text-align:center;
    background:var(--surface);
    border:1px dashed var(--line);
    border-radius:20px;
    padding:80px 30px;
    max-width:720px;
    margin:60px auto;
}
.empty-state .empty-icon{
    width:72px;
    height:72px;
    margin:0 auto 24px;
    border-radius:22px;
    background:var(--brand-soft);
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--brand);
}
.empty-state .empty-icon svg{width:34px;height:34px;}
.empty-state h2{
    font-size:1.8rem;
    margin:0 0 12px;
    color:var(--ink);
}
.empty-state p{
    color:var(--text-2);
    font-size:16px;
    max-width:420px;
    margin:0 auto 32px;
}
.related-section{
    background:var(--section);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:72px 0;
}
.section-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:32px;
}
.section-head .eyebrow{
    display:block;
    font-size:13px;
    color:var(--brand);
    letter-spacing:.12em;
    font-weight:600;
}
.section-head h2{
    font-size:1.9rem;
    line-height:1.25;
    font-weight:800;
    color:var(--ink);
    margin:4px 0 0;
}
.section-more{
    color:var(--brand-dark);
    font-weight:600;
    font-size:14px;
    display:inline-flex;
    align-items:center;
    gap:6px;
    white-space:nowrap;
}
.section-more:hover{color:var(--brand);}
.section-more svg{width:16px;height:16px;}
.related-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
}
.related-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow);
    transition:transform .22s ease,box-shadow .22s ease;
}
.related-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-hover);
}
.related-cover{
    aspect-ratio:16/9;
    object-fit:cover;
    width:100%;
    background:var(--brand-soft);
}
.related-body{
    padding:20px 22px 22px;
}
.related-body h3{
    font-size:1.08rem;
    line-height:1.5;
    font-weight:700;
    margin:0 0 8px;
    color:var(--ink);
}
.related-body p{
    font-size:14px;
    line-height:1.7;
    color:var(--text-2);
    margin:0 0 16px;
}
.related-more{
    font-size:14px;
    font-weight:600;
    color:var(--brand-dark);
    display:inline-flex;
    align-items:center;
    gap:5px;
}
.related-more:hover{color:var(--brand);}
.related-more svg{width:15px;height:15px;}
.save-cta{
    padding:72px 0;
}
.save-cta .cta-box{
    max-width:940px;
    margin:0 auto;
    background:var(--brand-soft);
    border:1px solid rgba(47,126,158,.12);
    border-radius:24px;
    padding:48px 46px;
    display:flex;
    flex-direction:column;
    gap:28px;
    justify-content:space-between;
    align-items:flex-start;
}
@media (min-width:900px){
    .save-cta .cta-box{
        flex-direction:row;
        align-items:center;
        gap:40px;
    }
}
.cta-text h2{
    font-size:1.75rem;
    font-weight:800;
    color:var(--ink);
    margin:0 0 10px;
    line-height:1.3;
}
.cta-text p{
    font-size:15px;
    color:var(--text-2);
    max-width:560px;
    margin:0;
    line-height:1.8;
}
.site-footer{
    background:#14262F;
    color:rgba(255,255,255,.72);
    padding-top:60px;
}
.footer-top{
    display:grid;
    grid-template-columns:1.3fr 1fr 1fr 1.2fr;
    gap:40px 36px;
    padding-bottom:42px;
}
.footer-brand .logo-lockup{
    margin-bottom:18px;
}
.footer-brand .logo-mark{
    background:rgba(255,255,255,.12);
    color:#fff;
    box-shadow:none;
}
.footer-brand .logo-name{
    color:#fff;
}
.footer-brand .logo-tag{
    color:rgba(255,255,255,.55);
}
.footer-brand p{
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.6);
    margin:0;
    max-width:320px;
}
.footer-col{
    min-width:0;
}
.footer-col h4{
    font-size:15px;
    font-weight:700;
    color:#fff;
    margin:0 0 16px;
}
.footer-col a{
    color:rgba(255,255,255,.72);
    font-size:14px;
    line-height:2;
    transition:color .2s,opacity .2s;
    display:inline-block;
}
.footer-col a:hover{
    color:#fff;
}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding:22px 0;
    font-size:13px;
    color:rgba(255,255,255,.45);
    text-align:left;
}
.footer-bottom .copyright{
    margin:0;
}
@media (max-width:1080px){
    .footer-top{
        grid-template-columns:1fr 1fr;
    }
}
@media (max-width:780px){
    .page-main{padding:12px 0 60px;}
    .related-grid{grid-template-columns:1fr;}
    .footer-top{
        grid-template-columns:1fr;
        gap:28px;
    }
    .save-cta .cta-box{padding:36px 24px;}
}
@media (max-width:640px){
    .search-box{display:none;}
    .menu-burger{display:flex;}
    .brand-row{padding:12px 0 8px;}
    .logo-mark{width:38px;height:38px;font-size:16px;}
    .logo-name{font-size:15px;}
    .logo-tag{max-width:230px;}
    .channel-row{
        max-height:0;
        border-top-color:transparent;
        transition:max-height .3s ease;
    }
    .channel-row.mobile-open{
        max-height:220px;
        border-top-color:var(--line);
    }
    .channel-list{
        flex-direction:column;
        padding:12px 2px 16px;
        gap:6px;
    }
    .channel-link{
        width:100%;
        border-radius:10px;
    }
    .article-header h1{font-size:1.72rem;line-height:1.35;}
    .article-body{padding-top:22px;}
    .content{font-size:16.5px;}
    .post-nav .btn{
        width:100%;
    }
    .related-section{padding:52px 0;}
    .save-cta{padding:48px 0;}
}
@media (max-width:400px){
    .logo-tag{display:none;}
}

/* roulang page: category2 */
:root {
            --main-bg: #F7F9FB;
            --page-bg: #F7F9FB;
            --surface: #FFFFFF;
            --brand: #2F7E9E;
            --brand-dark: #2B6C8F;
            --brand-soft: #EAF2F6;
            --ink: #1B2733;
            --text-secondary: #52616E;
            --line: rgba(43, 108, 143, .14);
            --accent: #E07A5F;
            --radius-lg: 16px;
            --radius-md: 8px;
            --shadow-card: 0 10px 30px -15px rgba(31, 74, 99, 0.18);
            --shadow-hover: 0 20px 40px -20px rgba(31, 74, 99, 0.28);
            --container-max: 1240px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            background-color: var(--page-bg);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.75;
            letter-spacing: .01em;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

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

        button, input {
            font-family: inherit;
        }

        a:focus-visible, button:focus-visible {
            outline: 2px solid #2F7E9E;
            outline-offset: 3px;
            border-radius: 4px;
        }

        .site-container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 1px 0 var(--line);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            gap: 24px;
        }

        .logo-lockup {
            display: flex;
            align-items: center;
            gap: 14px;
            min-width: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 46px;
            height: 46px;
            padding: 0 10px;
            background: var(--brand);
            color: #fff;
            font-weight: 700;
            font-size: 19px;
            border-radius: 10px;
            letter-spacing: .02em;
            line-height: 1;
            flex-shrink: 0;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .logo-name {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: .01em;
            white-space: nowrap;
        }

        .logo-tag {
            font-size: 12px;
            color: var(--text-secondary);
            white-space: nowrap;
            line-height: 1.4;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 220px;
            height: 42px;
            border: 1px solid #C4D1DA;
            border-radius: 999px;
            padding: 0 38px 0 18px;
            font-size: 14px;
            background: #fff;
            transition: border .2s ease, box-shadow .2s ease;
        }

        .search-box input::placeholder {
            color: #94A7B4;
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(47, 126, 158, .14);
        }

        .search-icon {
            position: absolute;
            right: 14px;
            color: #94A7B4;
            pointer-events: none;
        }

        .menu-burger {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: var(--brand-soft);
            border: 1px solid var(--line);
            border-radius: 8px;
            cursor: pointer;
            color: var(--brand-dark);
            transition: background .2s ease;
        }

        .menu-burger:hover {
            background: #e0ecf2;
        }

        .menu-burger svg {
            width: 22px;
            height: 22px;
        }

        .channel-row {
            border-top: 1px solid var(--line);
            padding-bottom: 12px;
        }

        .channel-list {
            display: flex;
            align-items: center;
            gap: 8px;
            padding-top: 12px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .channel-list::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: all .2s ease;
        }

        .channel-link:hover {
            background: #F2F7FA;
            color: var(--brand-dark);
        }

        .channel-link.active {
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-weight: 700;
            border-color: rgba(47, 126, 158, .2);
        }

        @media (max-width: 768px) {
            .brand-row {
                flex-wrap: wrap;
                padding-top: 14px;
            }

            .logo-name {
                font-size: 16px;
                white-space: normal;
                line-height: 1.3;
            }

            .logo-tag {
                font-size: 11px;
                white-space: normal;
            }

            .search-box {
                order: 3;
                width: 100%;
                margin-top: 4px;
            }

            .search-box input {
                width: 100%;
            }

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

            .header-tools {
                gap: 8px;
            }

            .channel-row.is-open {
                display: block;
            }
        }

        @media (min-width: 769px) {
            .channel-row {
                display: block !important;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E2A36;
            color: rgba(255, 255, 255, .78);
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 40px;
            padding: 64px 0 40px;
        }

        .footer-brand .logo-mark {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: rgba(255, 255, 255, .9);
            margin-bottom: 16px;
        }

        .footer-col p {
            margin: 0 0 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, .62);
            transition: color .2s ease;
            line-height: 1.9;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .46);
            text-align: center;
        }

        @media (max-width: 992px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 600px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-top: 44px;
            }
            .site-container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        /* ===== Page hero banner ===== */
        .cat2-hero {
            background: linear-gradient(135deg, rgba(47, 126, 158, .10), rgba(234, 243, 247, .85)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-color: var(--sectionalt);
            padding: 76px 0 68px;
            border-bottom: 1px solid var(--line);
        }

        .cat2-hero-content {
            max-width: 900px;
        }

        .cat2-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--surface);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--brand-dark);
            border: 1px solid rgba(47, 126, 158, .2);
            box-shadow: var(--shadow-card);
            margin-bottom: 18px;
        }

        .cat2-hero h1 {
            font-size: clamp(2rem, 3.6vw, 2.6rem);
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            letter-spacing: 0;
            margin-bottom: 16px;
        }

        .cat2-hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 640px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: var(--surface);
            padding: 16px 0;
            border-bottom: 1px solid var(--line);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            font-size: 13px;
            color: #94A7B4;
            gap: 6px;
        }

        .breadcrumb-list a {
            color: #6B7B88;
            transition: color .2s;
        }

        .breadcrumb-list a:hover {
            color: var(--brand);
        }

        .breadcrumb-list .sep {
            color: #c5d1da;
        }

        .breadcrumb-list .current {
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
        }

        /* ===== Section spacing ===== */
        .section-block {
            padding: 80px 0;
        }

        .section-block-alt {
            background: var(--sectionalt);
            padding: 80px 0;
        }

        .section-head {
            margin-bottom: 38px;
        }

        .section-head h2 {
            font-size: 27px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 8px;
        }

        .section-head .line-dot {
            display: inline-block;
            width: 28px;
            height: 4px;
            border-radius: 2px;
            background: var(--brand);
            margin-bottom: 12px;
        }

        /* ===== 横向覆盖图 ===== */
        .flow-guide-section {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 48px;
            align-items: center;
        }

        .flow-guide-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--surface);
        }

        .flow-guide-media img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

        .flow-guide-copy h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: 0;
        }

        .flow-guide-copy p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .flow-steps {
            list-style: none;
            padding: 0;
            margin-top: 18px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .flow-steps li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 10px;
            padding: 12px 16px;
        }

        .step-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 7px;
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-weight: 700;
            font-size: 13px;
            flex-shrink: 0;
        }

        @media (max-width: 900px) {
            .flow-guide-section {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .flow-guide-media img {
                height: 220px;
            }
        }

        /* 图文交替双列 */
        .alternate-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: center;
            margin-bottom: 52px;
        }

        .alternate-block:nth-child(even) {
            direction: rtl;
        }

        .alternate-block > * {
            direction: ltr;
        }

        .alternate-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--surface);
            min-height: 240px;
        }

        .alternate-media img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        .alternate-copy h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0;
            margin-bottom: 10px;
        }

        .alternate-copy p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }

        .alternate-copy ul {
            list-style: none;
            padding: 0;
            margin: 14px 0 0;
        }

        .alternate-copy li {
            position: relative;
            padding-left: 20px;
            font-size: 14px;
            color: #3d4d5a;
            margin-bottom: 10px;
        }

        .alternate-copy li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 9px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--brand);
            opacity: .55;
        }

        @media (max-width: 840px) {
            .alternate-block {
                grid-template-columns: 1fr;
                gap: 20px;
                margin-bottom: 36px;
            }
            .alternate-block:nth-child(even) {
                direction: ltr;
            }
            .alternate-media img {
                height: 200px;
            }
        }

        /* 压缩列表 */
        .index-list-compact {
            display: flex;
            flex-direction: column;
            border-radius: var(--radius-lg);
            background: var(--surface);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--line);
            overflow: hidden;
        }

        .index-item {
            display: flex;
            align-items: center;
            padding: 22px 28px;
            border-bottom: 1px solid rgba(43, 108, 143, .08);
            transition: background .2s ease;
        }

        .index-item:last-child {
            border-bottom: none;
        }

        .index-item:hover {
            background: #F5F9FB;
        }

        .index-item-index {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            margin-right: 24px;
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-soft);
            border-radius: 10px;
        }

        .index-item-title {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.6;
        }

        .index-item-title small {
            display: block;
            font-size: 13px;
            font-weight: 400;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        .index-item-arrow {
            color: var(--brand);
            font-weight: 700;
            flex-shrink: 0;
            margin-left: 16px;
        }

        @media (max-width: 640px) {
            .index-item {
                padding: 16px 18px;
                flex-wrap: wrap;
                gap: 6px;
            }
            .index-item-index {
                width: 30px;
                height: 30px;
                font-size: 13px;
                margin-right: 14px;
            }
        }

        /* 目录卡片 */
        .cat-card {
            display: block;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--line);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .cat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .cat-card-cover img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .cat-card-body {
            padding: 22px;
        }

        .cat-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0;
            margin-bottom: 6px;
        }

        .cat-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cat-card-link {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-dark);
            margin-top: 12px;
        }

        .cat-card-link svg {
            width: 16px;
            height: 16px;
            margin-left: 6px;
        }

        .cat2-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 900px) {
            .cat2-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .cat2-grid-3 {
                grid-template-columns: 1fr;
            }
        }

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

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .2s;
        }

        .faq-item summary {
            user-select: none;
            cursor: pointer;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 7px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
            transition: all .2s;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: #fff;
        }

        .faq-item .faq-body {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid var(--line);
            padding-top: 14px;
            margin-top: 0;
        }

        /* CTA */
        .cta-block {
            background: #DCEAF1;
            border-radius: 24px;
            padding: 50px 48px;
            text-align: center;
        }

        .cta-block h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0;
            margin-bottom: 10px;
        }

        .cta-block p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 24px;
        }

        .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: #fff;
            border: 1px solid var(--brand);
            padding: 12px 26px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            transition: background .2s ease, transform .1s ease, box-shadow .2s ease;
            box-shadow: 0 6px 18px -8px rgba(47, 126, 158, .4);
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-2px);
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--brand-dark);
            border: 1px solid #A9C3D0;
            padding: 12px 26px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            transition: all .2s ease;
        }

        .btn-secondary:hover {
            background: var(--surface);
            border-color: var(--brand);
        }

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

        /* 呼叫面板 */
        .callout-narrow {
            border-left: 4px solid var(--brand);
            background: var(--brand-soft);
            border-radius: 10px;
            padding: 14px 18px;
        }

        .callout-narrow p {
            font-size: 14px;
            color: #2b4c5f;
            margin: 0;
        }

        /* 数据统计小卡 */
        .mini-stat {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .mini-stat-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 18px 12px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .mini-stat-item .num {
            font-size: 26px;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.4;
        }

        .mini-stat-item .lbl {
            font-size: 13px;
            color: var(--text-secondary);
        }

        @media (max-width: 520px) {
            .mini-stat {
                grid-template-columns: repeat(3, 1fr);
            }
        }