/* roulang page: index */
:root {
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --canvas: #FFFFFF;
            --primary: #2F6BFF;
            --primary-deep: #1657D9;
            --primary-soft: #EAF0FF;
            --accent: #FF7A66;
            --success: #0FB98D;
            --text-strong: #1B2B4B;
            --text-body: #3C4A66;
            --text-muted: #75839C;
            --line: #E3EAF5;
            --shadow-xs: 0 1px 2px rgba(17, 38, 77, .04);
            --shadow-card: 0 6px 20px rgba(30, 60, 120, .08);
            --shadow-hover: 0 14px 32px rgba(30, 60, 120, .14);
            --shadow-pop: 0 20px 50px rgba(20, 40, 90, .18);
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            background: var(--bg);
            color: var(--text-body);
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease, background .2s ease, border .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        a:hover,
        a:focus {
            color: var(--primary-deep);
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(47, 107, 255, .32);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        .container-lg {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: clamp(72px, 9vw, 112px) 0;
        }

        .section-tight {
            padding: 64px 0;
        }

        .section-muted {
            background: #F2F6FE;
        }

        .section-soft {
            background: var(--primary-soft);
        }

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

        .text-center {
            text-align: center;
        }

        .text-muted {
            color: var(--text-muted);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            color: var(--primary);
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: .02em;
            border: 1px solid rgba(47, 107, 255, .08);
        }

        .eyebrow i {
            font-size: 13px;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 48px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-head h2,
        .section-head .h2 {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin: 18px 0 14px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            margin: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            background: var(--primary);
            color: #fff;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .2s ease;
            min-height: 44px;
            line-height: 1;
        }

        .btn:hover,
        .btn:focus {
            color: #fff;
            background: var(--primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(47, 107, 255, .22);
        }

        .btn:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(47, 107, 255, .18);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-body);
            border-color: #CDD8EA;
        }

        .btn-outline:hover,
        .btn-outline:focus {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: #f06752;
            border-color: #f06752;
            box-shadow: 0 8px 20px rgba(255, 122, 102, .25);
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }

        .btn-lg {
            height: 52px;
            padding: 0 34px;
            font-size: 17px;
        }

        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 500;
            transition: gap .2s ease;
        }

        .link-arrow:hover {
            gap: 12px;
            color: var(--primary-deep);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            height: 84px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 13px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .brand-mark svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .brand-text {
            font-size: 23px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .brand-text .logo-strong {
            color: var(--primary-deep);
        }

        .header-search {
            flex: 1 1 auto;
            max-width: 500px;
            display: flex;
            align-items: center;
            background: #F3F6FC;
            border: 1px solid var(--line);
            border-radius: 999px;
            height: 46px;
            padding: 0 6px 0 18px;
            transition: border .2s, box-shadow .2s, background .2s;
            min-width: 0;
        }

        .header-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 5px rgba(47, 107, 255, .14);
        }

        .header-search .search-icon {
            flex-shrink: 0;
            color: var(--text-muted);
        }

        .header-search input {
            flex: 1;
            min-width: 0;
            border: 0;
            outline: none;
            background: transparent;
            padding: 0 12px;
            height: 40px;
            font-size: 14px;
            color: var(--text-strong);
        }

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

        .header-search .search-btn {
            border: 0;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            height: 36px;
            padding: 0 22px;
            border-radius: 999px;
            cursor: pointer;
            transition: background .2s ease;
            white-space: nowrap;
        }

        .header-search .search-btn:hover {
            background: var(--primary-deep);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            margin-left: auto;
        }

        .header-link {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 8px;
        }

        .header-link:hover,
        .header-link:focus {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .drawer-trigger {
            border: 0;
            background: transparent;
            color: var(--text-strong);
            font-size: 23px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            cursor: pointer;
            display: none;
        }

        /* Category nav */
        .cat-nav {
            background: var(--surface);
            border-top: 1px solid rgba(227, 234, 245, .55);
            border-bottom: 1px solid var(--line);
            padding: 0;
        }

        .cat-nav .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .cat-nav .nav-links::-webkit-scrollbar {
            display: none;
        }

        .cat-nav a {
            padding: 7px 14px;
            border-radius: 999px;
            color: var(--text-body);
            font-size: 14px;
            white-space: nowrap;
            font-weight: 500;
        }

        .cat-nav a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .cat-nav a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
            box-shadow: inset 0 -2px 0 var(--primary);
        }

        /* Mobile search toolbar */
        .mobile-toolbar {
            display: none;
        }

        /* Hero */
        .hero-section {
            background: var(--surface);
            overflow: hidden;
            position: relative;
            padding: clamp(64px, 8vw, 104px) 0 72px;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: clamp(40px, 5vw, 72px);
            align-items: center;
        }

        .hero-copy {
            position: relative;
            z-index: 2;
        }

        .hero-copy h1 {
            font-size: clamp(32px, 4.5vw, 52px);
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--text-strong);
            margin: 22px 0 18px;
        }

        .brand-nowrap {
            display: inline-block;
            white-space: nowrap;
        }

        .hero-sub {
            font-size: 18px;
            color: var(--text-body);
            max-width: 560px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-bottom: 16px;
        }

        .hero-note {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual .wave-deco {
            position: absolute;
            right: -20px;
            bottom: -18px;
            width: 340px;
            opacity: .32;
            pointer-events: none;
        }

        .hero-visual .hero-pic {
            position: relative;
            z-index: 2;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            background: var(--primary-soft);
        }

        .hero-pic img {
            width: 100%;
            aspect-ratio: 5 / 3.6;
        }

        .hero-pic-flag {
            position: absolute;
            left: 16px;
            bottom: 16px;
            right: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(8px);
            border-radius: 14px;
            padding: 12px 16px;
            box-shadow: var(--shadow-card);
            color: var(--text-strong);
        }

        .hero-pic-flag .flag-icon {
            width: 34px;
            height: 34px;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .hero-pic-flag span {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Stats band */
        .stats-band {
            background: #EEF3FB;
            border-top: 1px solid #E4ECF9;
            padding: 28px 0;
        }

        .stats-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: space-between;
            padding: 0 4px;
        }

        .stat-item {
            flex: 1 1 160px;
            text-align: center;
            padding: 8px 10px;
        }

        .stat-number {
            display: flex;
            align-items: baseline;
            justify-content: center;
            gap: 4px;
            font-size: clamp(28px, 3.6vw, 42px);
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .stat-number .stat-suffix {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 13px;
            margin-top: 6px;
        }

        /* Feature block */
        .feature-main-wrap {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .feature-main-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 0;
        }

        .feature-large {
            background: var(--primary-soft);
            padding: 40px;
            border-radius: var(--radius-lg) 0 0 var(--radius-lg);
        }

        .feature-large h3 {
            font-size: 28px;
            color: var(--text-strong);
            line-height: 1.35;
            margin-bottom: 18px;
            font-weight: 700;
        }

        .feature-large p {
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 22px;
            font-size: 15px;
        }

        .feature-img {
            border-radius: 16px;
            overflow: hidden;
            margin-top: 16px;
            box-shadow: var(--shadow-card);
        }

        .feature-details {
            background: var(--surface);
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 12px;
        }

        .feature-mini-card {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 14px;
            border-radius: 16px;
            transition: background .2s, box-shadow .2s;
            border: 1px solid transparent;
        }

        .feature-mini-card:hover {
            background: var(--bg);
            border-color: var(--line);
            box-shadow: var(--shadow-xs);
        }

        .feature-mini-card .f-icon {
            width: 48px;
            height: 48px;
            border-radius: 13px;
            flex-shrink: 0;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .feature-mini-card:nth-child(even) .f-icon {
            background: #FFF1ED;
            color: var(--accent);
        }

        .feature-mini-card h4 {
            margin: 0 0 6px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-strong);
        }

        .feature-mini-card p {
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .feature-list-wrap {
            margin-top: 16px;
        }

        .feature-list-wrap .feature-line {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--surface);
            border-radius: 18px;
            box-shadow: var(--shadow-card);
            padding: 24px 28px;
            margin-bottom: 16px;
        }

        .feature-line:last-child {
            margin-bottom: 0;
        }

        .feature-line .f-num {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .feature-line h4 {
            margin: 0 0 5px;
            font-size: 18px;
            color: var(--text-strong);
        }

        .feature-line p {
            margin: 0;
            color: var(--text-muted);
            font-size: 14px;
        }

        .feature-line .f-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: #FFF1ED;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }

        /* Scenes */
        .scene-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 56px;
        }

        .scene-row:last-child {
            margin-bottom: 0;
        }

        .scene-row.reversed {
            direction: rtl;
        }

        .scene-row.reversed>* {
            direction: ltr;
        }

        .scene-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--primary-soft);
        }

        .scene-visual img {
            width: 100%;
            aspect-ratio: 4 / 3;
        }

        .scene-copy {
            padding: 10px 0;
        }

        .scene-tags {
            margin-bottom: 14px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .scene-tag {
            padding: 5px 13px;
            border-radius: 999px;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
        }

        .scene-copy h3 {
            font-size: 26px;
            color: var(--text-strong);
            margin-bottom: 14px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .scene-copy p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 18px;
            max-width: 480px;
        }

        .scene-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }

        /* Cases */
        .case-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 28px;
            align-items: stretch;
        }

        .case-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            transition: transform .25s ease, box-shadow .25s ease;
        }

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

        .case-card .case-img {
            width: 100%;
            aspect-ratio: 16 / 9;
        }

        .case-card .case-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .case-badge {
            align-self: flex-start;
            padding: 4px 12px;
            font-size: 13px;
            border-radius: 999px;
            background: var(--primary-soft);
            color: var(--primary);
            margin-bottom: 12px;
        }

        .case-card h3 {
            font-size: 21px;
            color: var(--text-strong);
            line-height: 1.45;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .case-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .case-data {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin: 10px 0 16px;
        }

        .data-pill {
            background: #F6F8FC;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 10px 16px;
            flex: 1;
            min-width: 110px;
        }

        .data-pill strong {
            color: var(--primary);
            font-size: 19px;
            display: block;
            line-height: 1.3;
        }

        .data-pill span {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Latest dynamic */
        .latest-section {
            background: var(--bg);
        }

        .latest-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 38px;
            flex-wrap: wrap;
        }

        .latest-header .section-head {
            margin-bottom: 0;
            max-width: 620px;
        }

        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .post-card {
            height: 100%;
            background: var(--surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
            overflow: hidden;
            position: relative;
        }

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

        .post-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-radius: 0;
            background: var(--primary-soft);
        }

        .post-thumb img {
            width: 100%;
            height: 100%;
            transition: transform .45s ease;
        }

        .post-card:hover .post-thumb img {
            transform: scale(1.05);
        }

        .post-card-content {
            padding: 20px;
        }

        .post-cat {
            display: inline-block;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 3px 11px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .post-card h3 {
            font-size: 18px;
            line-height: 1.5;
            font-weight: 600;
            color: var(--text-strong);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 54px;
        }

        .post-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 13px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-muted);
            font-size: 13px;
            border-top: 1px solid #F0F3FA;
            padding-top: 12px;
        }

        .post-meta .dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
        }

        .empty-state {
            background: var(--surface);
            border: 1px dashed #C5D4EA;
            border-radius: 18px;
            text-align: center;
            color: var(--text-muted);
            padding: 60px 20px;
            width: 100%;
            font-size: 16px;
        }

        .empty-state i {
            font-size: 42px;
            display: block;
            margin-bottom: 14px;
            color: #B9C8DE;
        }

        /* Pricing */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }

        .price-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 34px 30px;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: transform .25s ease, box-shadow .25s ease;
        }

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

        .price-card.featured {
            border-color: transparent;
            box-shadow: var(--shadow-pop);
            overflow: hidden;
            padding: 42px 34px;
        }

        .price-card.featured::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 7px;
            background: var(--primary);
        }

        .price-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-strong);
        }

        .price-for {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 18px;
        }

        .price-value {
            font-size: 42px;
            line-height: 1.2;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 4px;
            letter-spacing: -0.02em;
        }

        .price-value small {
            font-size: 15px;
            font-weight: 400;
            color: var(--text-muted);
        }

        .price-desc {
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--line);
            padding-bottom: 18px;
            margin-bottom: 20px;
        }

        .price-list {
            list-style: none;
            margin: 0 0 28px;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .price-list li {
            display: flex;
            gap: 9px;
            font-size: 14px;
            color: var(--text-body);
        }

        .price-list i {
            color: var(--success);
            margin-top: 6px;
            font-size: 13px;
        }

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

        .featured-tag {
            position: absolute;
            top: 18px;
            right: 18px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

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

        .faq-filter {
            display: flex;
            justify-content: center;
            gap: 14px;
            margin-bottom: 20px;
        }

        .faq-filter a {
            position: relative;
            color: var(--text-muted);
            font-size: 15px;
            padding-bottom: 8px;
            font-weight: 500;
        }

        .faq-filter a:after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: transparent;
        }

        .faq-filter a:hover,
        .faq-filter a.active {
            color: var(--primary);
        }

        .faq-filter a.active:after {
            background: var(--primary);
        }

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

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-strong);
            gap: 20px;
            transition: color .2s;
            border-radius: 6px;
        }

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

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-item summary i {
            color: var(--text-muted);
            transition: transform .2s ease;
        }

        .faq-item[open] summary i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-item p {
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.9;
            padding: 0 20px 24px 0;
            margin: 0;
        }

        /* CTA section */
        .cta-panel {
            background: var(--primary-soft);
            border-radius: 28px;
            padding: clamp(32px, 6vw, 64px);
            overflow: hidden;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .cta-panel .cta-copy {
            max-width: 640px;
            position: relative;
            z-index: 2;
        }

        .cta-panel h2 {
            font-size: clamp(28px, 3.6vw, 42px);
            color: var(--text-strong);
            font-weight: 700;
            margin: 0 0 14px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .cta-panel p {
            color: var(--text-body);
            font-size: 15px;
            margin: 0;
        }

        .cta-panel .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .cta-deco {
            position: absolute;
            right: -60px;
            bottom: -50px;
            width: 260px;
            height: 260px;
            background: rgba(255, 122, 102, .16);
            border-radius: 50%;
        }

        /* Footer */
        .site-footer {
            background: #EAF0F8;
            padding: 72px 0 0;
            color: var(--text-body);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr .9fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 52px;
        }

        .footer-brand {
            font-size: 24px;
            color: var(--text-strong);
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

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

        .footer-intro {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .footer-title {
            font-size: 15px;
            color: var(--text-strong);
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            color: var(--text-body);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid #D5DEEC;
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .footer-bottom .legal-links {
            display: flex;
            gap: 18px;
        }

        .footer-bottom a {
            color: var(--text-muted);
            font-size: 13px;
        }

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

        .back-top {
            color: var(--primary);
            font-weight: 500;
        }

        /* mobile drawer */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            width: min(88vw, 400px);
            height: 100vh;
            background: #fff;
            z-index: 120;
            box-shadow: var(--shadow-pop);
            transform: translateX(105%);
            transition: transform .3s ease;
            display: flex;
            flex-direction: column;
            padding: 26px 20px;
            overflow-y: auto;
        }

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

        .drawer-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
        }

        .drawer-brand {
            font-size: 21px;
            font-weight: 800;
            color: var(--text-strong);
        }

        .drawer-close {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--line);
            background: #fff;
            font-size: 20px;
            cursor: pointer;
            color: var(--text-strong);
        }

        .drawer-search {
            display: flex;
            align-items: center;
            background: #F3F6FC;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 0 4px 0 12px;
            margin-bottom: 28px;
        }

        .drawer-search input {
            flex: 1;
            min-width: 0;
            border: 0;
            padding: 12px 8px;
            background: transparent;
            font-size: 14px;
            outline: none;
        }

        .drawer-search button {
            border: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            cursor: pointer;
        }

        .drawer-nav {
            display: grid;
            gap: 6px;
        }

        .drawer-nav a {
            padding: 14px 12px;
            border-radius: 12px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 16px;
        }

        .drawer-nav a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .drawer-nav a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .drawer-cta {
            margin-top: 24px;
        }

        .drawer-backdrop {
            position: fixed;
            inset: 0;
            z-index: 110;
            background: rgba(20, 32, 58, .34);
            opacity: 0;
            pointer-events: none;
            transition: opacity .25s ease;
        }

        .drawer-backdrop.open {
            opacity: 1;
            pointer-events: auto;
        }

        @media (max-width: 1024px) {
            .header-actions .header-link {
                display: none;
            }

            .header-actions .btn {
                display: inline-flex;
            }

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

            .feature-large {
                border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            }
        }

        @media (max-width: 900px) {
            .header-inner {
                height: 72px;
                gap: 12px;
            }

            .header-search {
                display: none;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 42px;
            }

            .hero-visual {
                max-width: 640px;
            }

            .stats-grid {
                gap: 12px;
            }

            .scene-row {
                grid-template-columns: 1fr;
                gap: 28px;
                margin-bottom: 44px;
            }

            .scene-row.reversed {
                direction: ltr;
            }

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

            .price-grid {
                grid-template-columns: 1fr;
                max-width: 520px;
                margin: 0 auto;
            }

            .price-card.featured {
                order: -1;
            }

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

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

        @media (max-width: 768px) {
            .site-header {
                position: relative;
            }

            .header-inner {
                height: 66px;
            }

            .drawer-trigger {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .header-actions .btn {
                display: none;
            }

            .mobile-toolbar {
                display: block;
                padding: 10px 16px 14px;
                background: #fff;
                border-bottom: 1px solid var(--line);
            }

            .mobile-toolbar form {
                display: flex;
                align-items: center;
                background: #F3F6FC;
                border: 1px solid var(--line);
                border-radius: 999px;
                padding: 0 4px 0 14px;
                height: 44px;
            }

            .mobile-toolbar input {
                flex: 1;
                min-width: 0;
                border: 0;
                background: transparent;
                font-size: 14px;
                outline: none;
                padding: 0 10px;
            }

            .mobile-toolbar button {
                border: 0;
                width: 36px;
                height: 36px;
                background: var(--primary);
                color: #fff;
                border-radius: 50%;
                font-size: 14px;
                cursor: pointer;
            }

            .cat-nav .nav-links {
                justify-content: flex-start;
            }

            .hero-section {
                padding-top: 36px;
            }

            .hero-copy h1 {
                font-size: clamp(29px, 6vw, 41px);
            }

            .section {
                padding: 56px 0;
            }

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

            .stat-item {
                padding: 12px 4px;
            }

            .feature-large {
                padding: 24px;
            }

            .feature-mini-card {
                padding: 14px 4px;
            }

            .feature-line {
                flex-wrap: wrap;
                padding: 20px 18px;
            }

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

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

            .footer-bottom {
                flex-direction: column;
                justify-content: flex-start;
            }

            .section-head {
                margin-bottom: 28px;
            }

            .latest-header {
                flex-direction: column;
            }

            .cta-panel {
                flex-direction: column;
                align-items: stretch;
                text-align: left;
                padding: 28px 22px;
            }

            .cta-actions .btn {
                flex: 1;
            }

            .brand-text {
                font-size: 20px;
            }
        }

        @media (max-width: 480px) {
            .container-lg,
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }

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

            .btn-lg {
                height: 48px;
                padding: 0 26px;
            }

            .stats-grid {
                gap: 0;
            }

            .stat-number {
                font-size: 26px;
            }

            .feature-mini-card {
                flex-direction: column;
            }

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

            .faq-item p {
                padding-left: 0;
            }

            .price-card {
                padding: 22px;
            }

            .price-card.featured {
                padding: 34px 22px;
            }
        }

/* roulang page: article */
:root {
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --primary: #2F6BFF;
  --primary-deep: #1657D9;
  --primary-soft: #EAF0FF;
  --accent: #FF7A66;
  --accent-soft: #FFF1ED;
  --success: #0FB98D;
  --text-strong: #1B2B4B;
  --text-body: #3C4A66;
  --text-muted: #75839C;
  --line: #E3EAF5;
  --canvas: #FFFFFF;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-xs: 0 1px 2px rgba(17, 38, 77, .04);
  --shadow-card: 0 6px 20px rgba(30, 60, 120, .08);
  --shadow-hover: 0 14px 32px rgba(30, 60, 120, .14);
  --shadow-pop: 0 20px 50px rgba(20, 40, 90, .18);
  --section-space: clamp(72px, 9vw, 120px);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

a:hover {
  color: var(--primary-deep);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid rgba(47, 107, 255, .55);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3, h4, h5 {
  color: var(--text-strong);
  margin: 0 0 .45em;
  line-height: 1.35;
  letter-spacing: -.01em;
}

p {
  margin-top: 0;
}

.container, .grid-container {
  max-width: 1200px;
}

.grid-container {
  padding-left: 22px;
  padding-right: 22px;
}

/* ========== 按钮组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  background: var(--primary);
  color: #fff;
  transition: all .2s ease;
}

.btn:hover {
  background: var(--primary-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.btn:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-outline {
  background: var(--surface);
  color: var(--text-strong);
  border-color: var(--line);
}

.btn-outline:hover {
  background: var(--surface);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-light {
  background: rgba(255, 255, 255, .9);
  color: var(--text-strong);
}

.btn-sm {
  min-height: 40px;
  padding: 8px 16px;
  font-size: 14px;
}

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

.btn-accent:hover {
  background: #e05f4d;
  color: #fff;
}

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

.text-link i {
  font-size: 12px;
  transition: transform .2s ease;
}

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

/* ========== 顶部信息带 ========== */
.top-info {
  background: #eef3fb;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-muted);
}

.top-info-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  min-height: 36px;
  align-items: center;
}

.top-info a {
  color: var(--text-body);
  margin-left: 16px;
}

.top-info a:hover {
  color: var(--primary);
}

@media (max-width: 640px) {
  .top-info-inner span {
    display: none;
  }
}

/* ========== 主导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .96);
  box-shadow: var(--shadow-xs);
}

.main-bar {
  background: #fff;
}

.main-bar-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 84px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
}

.brand-icon {
  width: 38px;
  height: 38px;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 12px;
  padding: 7px;
}

.brand-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-strong);
  white-space: nowrap;
  letter-spacing: -.01em;
}

.brand-text em {
  font-style: normal;
  color: var(--primary);
}

.header-search {
  flex: 1 1 auto;
  max-width: 620px;
  display: flex;
  align-items: center;
  background: #f2f6fd;
  border: 1px solid transparent;
  border-radius: 30px;
  min-height: 48px;
  padding: 0 6px 0 20px;
  transition: all .25s ease;
  margin-left: 8px;
  margin-right: 8px;
}

.header-search:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(47, 107, 255, .12);
}

.header-search .search-ico {
  color: var(--text-muted);
  font-size: 15px;
  margin-right: 10px;
}

.header-search input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  height: 44px;
  font-size: 15px;
  color: var(--text-strong);
  padding: 0;
}

.header-search input::placeholder {
  color: var(--text-muted);
  font-size: 14px;
}

.header-search input:focus {
  outline: none;
}

.header-search button {
  border: 0;
  background: var(--primary);
  color: #fff;
  height: 38px;
  padding: 0 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s ease;
}

.header-search button:hover {
  background: var(--primary-deep);
}

.nav-zone {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  position: relative;
  padding: 8px 13px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-body);
  border-radius: 9px;
  white-space: nowrap;
}

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

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

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}

.btn-head {
  min-height: 40px;
  padding: 8px 18px;
}

.nav-toggle-btn {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: #f2f6fd;
  border-radius: 10px;
  color: var(--text-strong);
  font-size: 18px;
  cursor: pointer;
}

.mobile-toggle-input {
  display: none;
}

.mobile-drawer {
  display: none;
}

/* 抽屉样式 */
.mobile-drawer {
  background: #fff;
  border-top: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  padding: 18px 22px 24px;
  animation: drawerFade .2s ease both;
}

.mobile-drawer .nav-links {
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}

.mobile-drawer .nav-links a {
  padding: 12px 14px;
  border-radius: 10px;
}

.mobile-drawer .nav-links a.active {
  color: var(--primary);
}

.mobile-drawer .drawer-bottom {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.mobile-drawer .btn {
  flex: 1 1 auto;
}

@keyframes drawerFade {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1100px) {
  .nav-zone .nav-links {
    display: none;
  }
  .btn-head {
    display: none;
  }
  .nav-toggle-btn {
    display: inline-flex;
  }
  .main-bar-inner {
    gap: 10px;
  }
  .brand-text {
    font-size: 19px;
  }
  .header-search {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 760px) {
  .main-bar {
    padding: 10px 0;
  }
  .main-bar-inner {
    flex-wrap: wrap;
    min-height: 0;
    row-gap: 10px;
  }
  .brand {
    flex: 1 1 auto;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
  }
  .brand-text {
    font-size: 18px;
  }
  .header-search {
    order: 3;
    width: 100%;
    flex-basis: 100%;
    max-width: 100%;
    margin: 0;
    min-height: 44px;
  }
  .header-search button {
    padding: 0 16px;
  }
  .mobile-toggle-input:checked ~ .mobile-drawer {
    display: block;
  }
}

/* ========== 文章页布局 ========== */
.article-page {
  padding: clamp(36px, 5vw, 66px) 0 40px;
  background: var(--bg);
  min-height: 70vh;
  position: relative;
}

.article-page::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 260px;
  background: linear-gradient(180deg, #eef4ff 0%, rgba(238, 244, 255, 0) 100%);
  pointer-events: none;
}

.article-layout {
  row-gap: 34px;
}

.article-primary {
  position: relative;
}

.article-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 4vw, 54px);
  box-shadow: var(--shadow-card);
  border: 1px solid #edf2fa;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb .current {
  color: var(--text-strong);
  max-width: 280px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-soft);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 30px;
  margin-bottom: 18px;
}

.article-card h1.article-title {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.35;
  margin-bottom: 12px;
  letter-spacing: -.02em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  color: var(--text-muted);
  font-size: 14px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
  margin: 22px 0 30px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.article-meta i {
  color: var(--primary);
  opacity: .8;
  width: 14px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 30px;
  background: var(--accent-soft);
  color: #c74a36;
}

/* 正文 */
.article-body {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-body);
}

.article-body > * {
  max-width: 760px;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  margin: 40px 0 16px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.article-body h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 30px 0 10px;
}

.article-body p {
  margin-bottom: 1.2em;
}

.article-body ul,
.article-body ol {
  padding-left: 1.3em;
  margin-bottom: 1.5em;
}

.article-body li {
  margin-bottom: .5em;
}

.article-body img {
  border-radius: 16px;
  margin: 28px 0;
  box-shadow: var(--shadow-card);
  width: 100%;
  object-fit: cover;
}

.article-body blockquote {
  margin: 28px 0;
  padding: 14px 22px;
  border-left: 4px solid var(--primary);
  background: var(--primary-soft);
  border-radius: 0 12px 12px 0;
  color: var(--text-strong);
  font-size: 15px;
}

.article-body a {
  text-decoration: underline;
  text-underline-offset: 4px;
  word-break: break-word;
}

.article-body a:hover {
  color: var(--primary-deep);
  text-decoration-thickness: 2px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  font-size: 15px;
}

.article-body table th,
.article-body table td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
}

.article-body table th {
  background: var(--primary-soft);
  color: var(--text-strong);
  font-weight: 600;
}

.article-body pre {
  background: #1e2b48;
  color: #eaf0ff;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
}

/* 翻页区 */
.article-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 14px;
  align-items: center;
  margin-top: 48px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.article-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-radius: 14px;
  padding: 14px 16px;
  background: #f7f9fd;
  border: 1px solid transparent;
  transition: all .2s ease;
}

.article-nav a:hover {
  border-color: #d3e0f8;
  background: var(--primary-soft);
}

.article-nav a .nav-type {
  font-size: 12px;
  color: var(--text-muted);
}

.article-nav a .nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-strong);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}

.article-nav .article-back {
  flex-direction: row;
  align-items: center;
  min-width: 130px;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 30px;
}

.article-nav .article-back:hover {
  border-color: var(--primary);
}

.article-nav .next-nav {
  text-align: right;
}

@media (max-width: 700px) {
  .article-nav {
    grid-template-columns: 1fr;
  }
  .article-nav .article-back {
    order: -1;
  }
}

/* 侧栏 */
.side-stack {
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 108px;
}

.side-card {
  background: var(--surface);
  border: 1px solid #edf2fa;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  padding: 22px;
}

.side-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-strong);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.side-card-head i {
  color: var(--primary);
  width: 20px;
}

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

.side-list li {
  border-bottom: 1px dashed var(--line);
}

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

.side-list a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

.side-list a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.toc-active {
  color: var(--primary) !important;
}

.side-note {
  background: #fff6f1;
  border: 0;
}

.side-note .side-card-head i {
  color: var(--accent);
  width: auto;
}

.side-note-img {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
}

.side-note-img img {
  width: 100%;
  height: 128px;
  object-fit: cover;
}

.side-note p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-body);
}

/* 空状态 */
.article-empty {
  text-align: center;
  padding: 60px 20px;
}

.article-empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 18px;
  background: var(--primary-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--primary);
}

.article-empty h2 {
  font-size: 24px;
  margin-bottom: 6px;
}

.article-empty p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* 相关阅读 */
.related-area {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: var(--section-space) 0;
  margin-top: -20px;
}

.section-headline {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 30px;
}

.section-headline .small {
  font-size: 13px;
  color: var(--text-muted);
}

.section-headline h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  margin-bottom: 0;
}

.large-center {
  justify-content: space-between;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.related-card {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 190px;
  transition: all .25s ease;
  box-shadow: var(--shadow-xs);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.related-cover {
  width: 44%;
  min-width: 44%;
  overflow: hidden;
  position: relative;
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.related-card:hover .related-cover img {
  transform: scale(1.04);
}

.related-body {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.related-body .mini-badge {
  font-size: 12px;
  font-weight: 600;
  background: var(--primary-soft);
  color: var(--primary-deep);
  padding: 3px 10px;
  border-radius: 30px;
}

.related-body h3 {
  font-size: 18px;
  line-height: 1.5;
  margin: 8px 0 6px;
}

.related-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 760px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== 页脚 ========== */
.site-footer {
  background: #1e2b48;
  color: rgba(255, 255, 255, .72);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 46px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 21px;
  font-weight: 800;
  margin-bottom: 14px;
}

.footer-brand i {
  color: #8eb3ff;
}

.footer-intro {
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
  margin-bottom: 20px;
}

.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

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

.footer-links li {
  margin-bottom: 11px;
}

.footer-links a {
  color: rgba(255, 255, 255, .68);
  font-size: 14px;
}

.footer-links a:hover {
  color: #9cc0ff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  flex-wrap: wrap;
}

.legal-links {
  display: flex;
  gap: 18px;
}

.legal-links a {
  color: rgba(255, 255, 255, .68);
  font-size: 13px;
}

.legal-links a:hover {
  color: #fff;
}

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

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 回到顶部 */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 32px;
  width: 46px;
  height: 46px;
  background: #fff;
  color: var(--text-strong);
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  z-index: 30;
  font-size: 16px;
}

@media (min-width: 480px) {
  .back-top {
    display: inline-flex;
  }
}

@media (max-width: 1024px) {
  .article-card {
    padding: 26px;
  }
  .side-stack {
    position: static;
  }
}

@media (max-width: 760px) {
  .article-body {
    font-size: 16px;
  }
}

/* roulang page: category1 */
:root {
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --primary: #2F6BFF;
            --primary-deep: #1657D9;
            --primary-soft: #EAF0FF;
            --accent: #FF7A66;
            --success: #0FB98D;
            --text-strong: #1B2B4B;
            --text-body: #3C4A66;
            --text-muted: #75839C;
            --line: #E3EAF5;
            --canvas: #FFFFFF;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-xs: 0 1px 2px rgba(17, 38, 77, .04);
            --shadow-card: 0 6px 20px rgba(30, 60, 120, .08);
            --shadow-hover: 0 14px 32px rgba(30, 60, 120, .14);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
        }

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

        a:hover {
            color: var(--primary-deep);
        }

        button,
        input {
            font-family: inherit;
        }

        ul,
        ol,
        p,
        h1,
        h2,
        h3,
        h4,
        figure {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .grid-padding-x>.cell {
            padding-left: .75rem;
            padding-right: .75rem;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        [tabindex]:focus-visible {
            outline: 3px solid rgba(47, 107, 255, .32);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            white-space: nowrap;
            transition: all .22s ease;
        }

        .btn:active {
            transform: translateY(2px);
        }

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

        .btn-primary:hover {
            background: var(--primary-deep);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(47, 107, 255, .22);
        }

        .btn-secondary {
            background: #fff;
            border-color: var(--line);
            color: var(--text-strong);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .btn-accent:hover {
            background: #F96751;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 20px rgba(255, 122, 102, .25);
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            letter-spacing: .06em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-xs);
            border-bottom: 1px solid var(--line);
        }

        .header-inner {
            display: grid;
            grid-template-columns: auto 1fr auto;
            align-items: center;
            gap: 26px;
            min-height: 72px;
        }

        .brand-lockup {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .brand-logo svg {
            width: 30px;
            height: 30px;
            color: var(--primary);
        }

        .brand-logo em {
            font-style: normal;
            color: var(--primary);
            font-weight: 700;
        }

        .brand-note {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary-deep);
            font-size: 12px;
            line-height: 1;
            padding: 5px 8px;
            border-radius: 6px;
            margin-left: 2px;
        }

        .header-search {
            width: min(100%, 580px);
            margin: 0 auto;
        }

        .subnav-search {
            display: none;
        }

        .search-form {
            position: relative;
            width: 100%;
        }

        .search-form .search-icon {
            position: absolute;
            left: 17px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 15px;
            z-index: 2;
            pointer-events: none;
        }

        .search-form input[type="search"] {
            height: 46px;
            width: 100%;
            border: 1px solid var(--line);
            border-radius: 28px;
            background: #F5F8FE;
            padding: 0 98px 0 44px;
            font-size: 14px;
            color: var(--text-strong);
            transition: all .22s ease;
            appearance: none;
            box-shadow: none;
            margin: 0;
        }

        .search-form input[type="search"]:hover {
            border-color: #C9D7EE;
        }

        .search-form input[type="search"]:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(47, 107, 255, .15);
        }

        .search-form button {
            position: absolute;
            right: 6px;
            top: 6px;
            height: 34px;
            min-height: 34px;
            padding: 0 18px;
            background: var(--primary);
            color: #fff;
            border: 0;
            border-radius: 18px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s ease;
        }

        .search-form button:hover {
            background: var(--primary-deep);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .header-shortcut {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            white-space: nowrap;
        }

        .header-shortcut:hover {
            color: var(--primary);
        }

        .nav-cta {
            height: 42px;
            padding: 0 20px;
            font-size: 14px;
            white-space: nowrap;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            color: var(--text-strong);
            font-size: 18px;
            cursor: pointer;
        }

        .subnav {
            border-top: 1px solid rgba(227, 234, 245, .7);
            background: #fff;
            position: relative;
        }

        .subnav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 50px;
            gap: 20px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            white-space: nowrap;
            position: relative;
            padding: 6px 0 7px;
            border-bottom: 2px solid transparent;
            line-height: 1.2;
        }

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

        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
            border-bottom-color: var(--primary);
        }

        @media (max-width: 1023px) {
            .header-inner {
                grid-template-columns: auto 1fr auto;
                gap: 16px;
            }

            .header-search {
                display: none;
            }

            .subnav {
                padding-top: 0;
            }

            .subnav-search {
                display: block;
                margin-bottom: 14px;
                background: #EEF3FB;
                border-radius: 28px;
            }

            .subnav-search .search-form input {
                background: #fff;
            }

            .subnav-search .search-form .search-icon {
                left: 17px;
            }

            .header-shortcut {
                display: none;
            }

            .nav-cta {
                display: inline-flex;
            }
        }

        @media (max-width: 767px) {
            body.drawer-open {
                overflow: hidden;
            }

            .site-header {
                position: sticky;
                top: 0;
            }

            .header-inner {
                grid-template-columns: 1fr auto;
                min-height: 64px;
            }

            .header-search,
            .subnav-search {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .menu-toggle {
                display: flex;
                justify-self: end;
            }

            .subnav-inner {
                flex-wrap: wrap;
                padding: 4px 0 8px;
            }

            .nav-links {
                width: 100%;
                padding: 0 2px;
            }

            .nav-links a {
                font-size: 14px;
            }
        }

        .site-drawer {
            position: fixed;
            top: 0;
            right: 0;
            height: 100vh;
            width: min(88vw, 360px);
            background: #fff;
            box-shadow: var(--shadow-pop);
            z-index: 100;
            padding: 24px 22px;
            transform: translateX(102%);
            transition: transform .3s ease;
            display: flex;
            flex-direction: column;
        }

        .drawer-open .site-drawer {
            transform: translateX(0);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 28, 56, .4);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transition: opacity .25s ease;
        }

        .drawer-open .drawer-overlay {
            opacity: 1;
            visibility: visible;
        }

        .drawer-inner {
            display: flex;
            flex-direction: column;
            gap: 18px;
            margin-top: 28px;
            flex: 1;
        }

        .drawer-inner a {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-strong);
            padding: 12px 0;
            border-bottom: 1px solid var(--line);
        }

        .drawer-inner a.active {
            color: var(--primary);
        }

        .drawer-inner .btn {
            margin-top: 10px;
        }

        .drawer-close {
            align-self: flex-end;
            width: 42px;
            height: 42px;
            border: 1px solid var(--line);
            background: #fff;
            border-radius: 12px;
            color: var(--text-strong);
            cursor: pointer;
            font-size: 17px;
        }

        .drawer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 700;
            color: var(--text-strong);
        }

        .drawer-brand i {
            color: var(--primary);
        }

        .page-hero {
            background: #fff;
            padding: clamp(72px, 9vw, 116px) 0 54px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            right: 4%;
            top: 4%;
            width: 420px;
            height: 420px;
            opacity: .3;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='860' height='860' viewBox='0 0 100 100'%3E%3Cpath d='M20 60 Q 25 35 40 45 T 60 45 T 80 55' fill='none' stroke='%232F6BFF' stroke-width='1.4'/%3E%3Cpath d='M15 78 Q 25 50 45 62 T 75 58 T 90 68' fill='none' stroke='%23FF7A66' stroke-width='1'/%3E%3Cpath d='M30 30 Q 45 18 55 28 T 60 42' fill='none' stroke='%232F6BFF' stroke-width='1'/%3E%3C/svg%3E");
            background-repeat: repeat;
            background-size: 430px;
            z-index: 0;
        }

        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

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

        .breadcrumb .current {
            color: var(--text-strong);
            font-weight: 500;
        }

        .page-hero h1 {
            font-size: clamp(36px, 5vw, 56px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-strong);
            margin-bottom: 18px;
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
            max-width: 640px;
            margin-top: 14px;
        }

        .hero-note {
            margin-top: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .hero-note i {
            color: var(--success);
        }

        .hero-anchor-panel {
            background: var(--bg);
            border: 1px solid #EDF1F7;
            border-radius: 22px;
            padding: 24px 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-content: flex-start;
            align-self: center;
            box-shadow: var(--shadow-card);
            margin-top: 40px;
        }

        .anchor-panel-title {
            width: 100%;
            margin-bottom: 2px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-strong);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .anchor-panel-title i {
            color: var(--accent);
        }

        .anchor-pill {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 38px;
            padding: 0 15px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all .18s ease;
        }

        .anchor-pill:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-soft);
            transform: translateY(-2px);
        }

        .product-region {
            padding-top: clamp(56px, 7vw, 100px);
            padding-bottom: 30px;
        }

        .filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 10px 12px;
            margin: 48px 0 32px;
            box-shadow: var(--shadow-xs);
        }

        .filter-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-strong);
            font-weight: 600;
            padding: 0 10px 0 6px;
            font-size: 14px;
        }

        .filter-label i {
            color: var(--primary);
        }

        .filter-chip {
            border: 1px solid transparent;
            min-height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 18px;
            border-radius: 999px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all .18s ease;
        }

        .filter-chip:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .filter-chip.is-active {
            background: var(--primary-soft);
            color: var(--primary-deep);
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 0 0 3px rgba(47, 107, 255, .08);
        }

        .industry-note {
            color: var(--text-muted);
            font-size: 13px;
            margin-left: auto;
            padding-right: 10px;
        }

        .product-cell {
            display: flex;
            margin-bottom: 30px;
        }

        .product-cell.is-hidden {
            display: none;
        }

        .product-card {
            background: var(--surface);
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            width: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .25s ease, box-shadow .25s ease;
        }

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

        .product-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-soft);
        }

        .product-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .product-media::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 42%;
            background: linear-gradient(180deg, transparent, rgba(18, 32, 62, .22));
            pointer-events: none;
        }

        .product-badge {
            position: absolute;
            left: 13px;
            top: 13px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(255, 255, 255, .94);
            color: var(--primary-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 11px;
            border-radius: 999px;
            box-shadow: 0 3px 10px rgba(15, 30, 70, .08);
        }

        .product-body {
            padding: 22px 20px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .product-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.45;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .product-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.85;
            flex: 1;
        }

        .product-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 20px;
            border-top: 1px dashed var(--line);
            padding-top: 13px;
        }

        .product-meta .user {
            font-size: 13px;
            color: var(--text-muted);
        }

        .text-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            gap: 6px;
        }

        .text-link i {
            transition: transform .2s ease;
        }

        .text-link:hover {
            color: var(--primary-deep);
        }

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

        .howto-section {
            background: #fff;
            padding: clamp(70px, 8vw, 110px) 0;
            margin-top: 20px;
        }

        .section-title {
            font-size: clamp(24px, 3.2vw, 38px);
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .section-desc {
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.9;
            max-width: 540px;
        }

        .howto-intro {
            padding-right: 16px;
        }

        .steps-card {
            background: var(--bg);
            border-radius: 22px;
            padding: 8px 24px 8px 8px;
            border: 1px solid #E8EEF7;
            overflow: hidden;
        }

        .steps-list {
            counter-reset: stepNum;
        }

        .steps-list li {
            position: relative;
            padding: 20px 4px 20px 82px;
            border-bottom: 1px solid var(--line);
            counter-increment: stepNum;
        }

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

        .steps-list li::before {
            content: counter(stepNum, decimal-leading-zero);
            position: absolute;
            left: 16px;
            top: 24px;
            width: 44px;
            height: 44px;
            background: #fff;
            color: var(--primary);
            font-size: 17px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 13px;
            box-shadow: var(--shadow-xs);
        }

        .steps-list strong {
            display: block;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 3px;
        }

        .steps-list span {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            display: block;
        }

        .service-slide {
            background: transparent;
            padding: clamp(72px, 8vw, 112px) 0 20px;
        }

        .check-card {
            background: #fff;
            border: 1px solid #E9EFF8;
            border-radius: 22px;
            padding: 26px 26px 22px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            transition: transform .25s ease, box-shadow .25s ease;
            height: 100%;
        }

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

        .check-icon {
            width: 54px;
            height: 54px;
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 21px;
            border-radius: 15px;
        }

        .check-card h3 {
            font-size: 18px;
            color: var(--text-strong);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .check-card p {
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.85;
        }

        .faq-section {
            background: #fff;
            padding: clamp(72px, 8vw, 110px) 0;
            margin-top: 56px;
        }

        .faq-layout .cell:first-child {
            padding-right: 32px;
        }

        .faq-panel {
            background: var(--surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .faq-panel .accordion-title {
            border-bottom: 1px solid var(--line);
            background: #fff;
            color: var(--text-strong);
            font-size: 16px;
            font-weight: 600;
            padding: 19px 34px 19px 0;
            position: relative;
        }

        .faq-panel .accordion-title:hover {
            color: var(--primary);
        }

        .faq-panel .accordion-title::before {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-muted);
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .25s ease;
        }

        .faq-panel .accordion-item.is-active>.accordion-title {
            color: var(--primary);
        }

        .faq-panel .accordion-item.is-active>.accordion-title::before {
            transform: translateY(-50%) rotate(180deg);
            background: var(--primary-soft);
            color: var(--primary);
        }

        .faq-panel .accordion-title::after {
            display: none;
        }

        .faq-panel .accordion-content {
            background: #fff;
            border-bottom: 1px solid var(--line);
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.9;
            padding: 0 40px 20px 0;
        }

        .faq-panel .accordion-content p {
            margin-bottom: 0;
        }

        .cta-section {
            background: var(--bg);
            padding: clamp(70px, 8vw, 110px) 0 90px;
        }

        .cta-panel {
            background: var(--primary-soft);
            border-radius: 24px;
            padding: clamp(30px, 5vw, 58px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 42px;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            right: -60px;
            bottom: -90px;
            opacity: .5;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 120'%3E%3Ccircle cx='50' cy='60' r='42' fill='none' stroke='%232F6BFF' stroke-width='1.5' opacity='.3'/%3E%3Ccircle cx='50' cy='60' r='22' fill='none' stroke='%23FF7A66' stroke-width='1' opacity='.4'/%3E%3C/svg%3E");
            background-repeat: repeat;
            background-size: 180px;
        }

        .cta-text {
            position: relative;
            z-index: 2;
        }

        .cta-panel h2 {
            font-size: clamp(23px, 3vw, 32px);
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .cta-panel p {
            color: var(--text-body);
            max-width: 640px;
            font-size: 15px;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            position: relative;
            z-index: 2;
            flex: 0 0 auto;
        }

        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--line);
            padding-top: 58px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2.2fr 1fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 42px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.4;
            margin-bottom: 14px;
        }

        .footer-brand i {
            color: var(--primary);
            font-size: 24px;
        }

        .footer-intro {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.9;
            max-width: 320px;
            margin-bottom: 20px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--primary-soft);
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--line);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

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

        .legal-links {
            display: flex;
            gap: 20px;
        }

        .scroll-top {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
        }

        @media (max-width: 1023px) {
            .page-hero h1 {
                font-size: 40px;
            }

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

            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                gap: 22px;
            }
        }

        @media (max-width: 767px) {
            .header-inner {
                grid-template-columns: 1fr auto;
            }

            .subnav-inner {
                display: block;
            }

            .page-hero {
                padding-top: 60px;
                padding-bottom: 38px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .hero-note {
                align-items: flex-start;
            }

            .filter-bar {
                border-radius: 18px;
                background: #fff;
                padding: 10px;
            }

            .filter-label {
                width: 100%;
            }

            .filter-chip {
                flex: 1 1 auto;
                padding: 0 14px;
                font-size: 13px;
            }

            .industry-note {
                width: 100%;
                margin-left: 0;
                padding: 0 8px 8px;
            }

            .howto-intro {
                margin-bottom: 28px;
            }

            .steps-card {
                padding: 8px;
            }

            .faq-layout .cell:first-child {
                padding-right: 0;
                margin-bottom: 30px;
            }

            .faq-panel .accordion-content {
                padding-right: 26px;
            }

            .cta-section {
                padding-bottom: 46px;
            }

            .cta-panel {
                padding: 28px 20px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                padding-bottom: 26px;
            }

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

        @media (max-width: 519px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-note {
                display: none;
            }

            .brand-logo {
                font-size: 20px;
            }

            .search-form input[type="search"] {
                height: 44px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

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

            .product-body h3 {
                font-size: 18px;
            }

            .steps-list li {
                padding-left: 72px;
            }

            .steps-list li::before {
                left: 6px;
                width: 40px;
                height: 40px;
                font-size: 15px;
            }
        }

/* roulang page: category2 */
:root{
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --primary:#2F6BFF;
  --primary-deep:#1657D9;
  --primary-soft:#EAF0FF;
  --accent:#FF7A66;
  --accent-soft:#FFF1ED;
  --success:#0FB98D;
  --text-strong:#1B2B4B;
  --text-body:#3C4A66;
  --text-muted:#75839C;
  --line:#E3EAF5;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --radius-xl:26px;
  --shadow-xs:0 1px 2px rgba(17,38,77,.04);
  --shadow-card:0 6px 20px rgba(30,60,120,.08);
  --shadow-hover:0 14px 32px rgba(30,60,120,.14);
  --shadow-pop:0 20px 50px rgba(20,40,90,.18);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .24s,border-color .24s,background .24s,box-shadow .24s,transform .24s}
ul,ol{list-style:none}
button,input{font-family:inherit;border:none;outline:none}
input:-webkit-autofill{-webkit-box-shadow:0 0 0 1000px #fff inset}
.container,.grid-container{max-width:var(--maxw);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;width:100%}
.section-pad{padding:clamp(72px,9vw,120px) 0;position:relative}
.lead-xl{font-size:18px;color:var(--text-body);line-height:1.9}
@media screen and (max-width:767px){
  .container,.grid-container{padding-left:20px;padding-right:20px}
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  border:1px solid transparent;transition:all .25s ease;
}
.btn svg,.btn i{font-size:14px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(47,107,255,.18)}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border:1px solid #D7E0EE;color:var(--text-strong)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 16px rgba(47,107,255,.1)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,102,.18)}
.btn-accent:hover{background:#f2604c;color:#fff;transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-text-link{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-weight:600;font-size:15px}
.btn-text-link:hover{color:var(--primary-deep);gap:10px}
.tag,.badge{
  display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:500;
  border-radius:999px;padding:6px 13px;line-height:1.4;
}
.badge-primary{background:var(--primary-soft);color:var(--primary-deep)}
.tag-accent{background:var(--accent-soft);color:#d95745}
.tag-light{background:#fff;border:1px solid var(--line);color:var(--text-muted)}
/* focus */
a:focus-visible,button:focus-visible,input:focus-visible,label:focus-visible{outline:3px solid rgba(47,107,255,.35);outline-offset:2px}
/* share header */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid #eef3f9;
  box-shadow:var(--shadow-xs);
}
.topbar-row{
  display:flex;align-items:center;gap:18px;padding:14px 24px;max-width:var(--maxw);margin:0 auto;
}
.brand-logo{
  display:inline-flex;align-items:center;gap:10px;flex-shrink:0;
}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--primary-soft);
  display:inline-flex;align-items:center;justify-content:center;color:var(--primary);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-size:21px;font-weight:800;letter-spacing:-.02em;color:var(--text-strong)}
.brand-text span{color:var(--primary)}
.header-search{
  flex:1 1 340px;display:flex;max-width:600px;margin:0 auto;
}
.search-form{
  display:flex;align-items:center;width:100%;height:46px;background:#F4F7FD;
  border:1px solid var(--line);border-radius:999px;padding:0 6px 0 18px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.search-form:hover{background:#fff;border-color:#cad5e8}
.search-form:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,107,255,.13)}
.search-form .search-icon{width:18px;height:18px;color:var(--text-muted);margin-right:10px}
.search-form input{
  flex:1;background:transparent;font-size:14px;color:var(--text-strong);height:100%;min-width:0;
}
.search-form input::placeholder{color:#99A7BD}
.search-form button{
  height:34px;padding:0 17px;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;cursor:pointer;
  display:inline-flex;align-items:center;gap:7px;transition:background .2s;
}
.search-form button:hover{background:var(--primary-deep)}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.quick-nav{display:flex;align-items:center;gap:20px;font-size:14px;color:var(--text-body)}
.quick-nav a{color:var(--text-body)}
.quick-nav a:hover{color:var(--primary)}
.quick-nav a.active{color:var(--primary);font-weight:700}
.hamburger{display:none;width:46px;height:46px;border-radius:12px;background:var(--primary-soft);color:var(--primary);align-items:center;justify-content:center;font-size:19px;cursor:pointer}
.menu-check{display:none}
.mobile-drawer{
  position:fixed;top:0;right:-88vw;width:86vw;max-width:390px;height:100vh;height:100dvh;z-index:100;
  background:#fff;box-shadow:var(--shadow-pop);padding:28px 24px;transition:right .32s ease;
  overflow-y:auto;
}
.mobile-backdrop{position:fixed;inset:0;background:rgba(19,33,68,.38);visibility:hidden;opacity:0;transition:all .28s;z-index:99;backdrop-filter:blur(2px)}
.menu-check:checked~.mobile-drawer{right:0}
.menu-check:checked~.mobile-backdrop{visibility:visible;opacity:1}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.close-drawer{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--text-muted);cursor:pointer}
.mobile-nav a{display:block;padding:13px 14px;border-radius:12px;font-weight:600;color:var(--text-strong)}
.mobile-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.mobile-nav a.active{background:var(--primary-soft);color:var(--primary)}
.mobile-search{margin:20px 0}
.category-nav{
  border-top:1px solid #eef3f9;background:#fff;padding:0;
}
.category-nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:8px;height:50px;
  overflow-x:auto;scrollbar-width:none;
}
.category-nav-inner::-webkit-scrollbar{display:none}
.category-nav-label{font-size:13px;color:var(--text-muted);margin-right:6px;display:inline-flex;align-items:center;gap:6px;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  display:inline-flex;align-items:center;white-space:nowrap;height:34px;padding:0 16px;
  border-radius:999px;color:var(--text-body);font-size:14px;font-weight:500;
}
.nav-links a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-links a.active{background:var(--primary-soft);color:var(--primary);font-weight:700}
/* ===== hero banner ===== */
.scenes-hero{
  position:relative;overflow:hidden;background:
    linear-gradient(112deg,rgba(255,255,255,.98) 0%,rgba(234,240,255,.92) 47%,rgba(255,241,237,.78) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:clamp(70px,9vw,120px) 0 90px;
}
.scenes-hero .hero-vec{
  position:absolute;right:-90px;top:-60px;width:520px;height:520px;pointer-events:none;opacity:.4;
  animation:floaty 6s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.hero-content{position:relative;z-index:2;max-width:840px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:var(--primary-deep);
  background:#fff;border:1px solid #dce6ff;padding:7px 16px;border-radius:999px;margin-bottom:22px;
  box-shadow:var(--shadow-xs);
}
.hero-eyebrow i{color:var(--accent)}
.hero-h1{color:var(--text-strong);font-size:clamp(34px,5vw,56px);line-height:1.22;letter-spacing:-.03em;font-weight:800;margin-bottom:16px}
.hero-h1 .dot{color:var(--accent)}
.hero-sub{
  font-size:17px;line-height:1.95;color:var(--text-body);max-width:720px;margin-bottom:30px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-chips a{
  height:42px;padding:0 20px;border:1px solid #d4e0f2;border-radius:999px;background:rgba(255,255,255,.75);
  display:inline-flex;align-items:center;gap:8px;color:var(--text-body);font-size:14px;
}
.hero-chips a:hover{border-color:var(--primary);color:var(--primary);background:#fff;box-shadow:var(--shadow-xs);transform:translateY(-1px)}
/* ===== title ===== */
.page-heading{margin-bottom:clamp(44px,6vw,72px)}
.kicker{
  display:inline-flex;align-items:center;gap:9px;color:var(--accent);font-weight:700;font-size:14px;
  letter-spacing:.02em;margin-bottom:12px;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-h2{font-size:clamp(26px,3vw,38px);line-height:1.32;color:var(--text-strong);font-weight:700;letter-spacing:-.02em;margin-bottom:12px}
.section-sub{color:var(--text-muted);font-size:16px;max-width:780px}
.section-sub strong{color:var(--text-body)}
/* scene list */
.scene-list{background:var(--bg)}
.scene-row{
  display:grid;grid-template-columns:repeat(12,1fr);align-items:center;column-gap:60px;row-gap:34px;
  padding-bottom:clamp(64px,9vw,100px);margin-bottom:clamp(64px,9vw,100px);
  border-bottom:1px solid var(--line);
}
.scene-row:last-child{border-bottom:none;padding-bottom:0;margin-bottom:0}
.scene-media{grid-column:1/6;position:relative}
.scene-row.is-alt .scene-media{grid-column:8/13;grid-row:1}
.scene-row.is-alt .scene-copy{grid-column:1/7;grid-row:1}
.media-frame{position:relative;border-radius:24px;overflow:hidden;box-shadow:var(--shadow-card);background:#E7EDF8}
.media-frame::after{content:"";position:absolute;inset:0;border-radius:24px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);pointer-events:none}
.media-frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
.media-frame .badge-media{
  position:absolute;left:16px;top:16px;z-index:3;background:rgba(255,255,255,.94);box-shadow:var(--shadow-xs);
  color:var(--text-strong);font-size:12px;font-weight:700;padding:7px 12px;border-radius:999px;
}
.media-frame::before{
  content:"";position:absolute;right:-16px;bottom:-16px;width:110px;height:110px;z-index:-1;
  border-radius:36px;background:var(--accent);opacity:.14;transform:rotate(18deg);
}
.scene-num{
  display:inline-flex;align-items:center;font-size:14px;font-weight:800;color:var(--primary);
  letter-spacing:.04em;margin-bottom:16px;
}
.scene-num em{font-style:normal;color:var(--accent);font-size:25px;font-weight:800;letter-spacing:0;padding-right:6px}
.scene-copy h3{font-size:clamp(21px,2.4vw,30px);color:var(--text-strong);font-weight:750;line-height:1.35;letter-spacing:-.01em;margin-bottom:18px}
.scene-copy p{color:var(--text-body);font-size:16px;line-height:2;margin-bottom:20px}
.scene-tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.scene-tag-list .tag{font-size:12px;padding:5px 12px;background:var(--primary-soft);color:var(--primary-deep)}
.scene-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px}
/* side evidence */
.side-evidence{
  background:#F2F6FE;border-top:1px solid #dee9fb;border-bottom:1px solid #dee9fb;
}
.evidence-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:40px;align-items:center}
.evidence-copy{grid-column:1/6}
.evidence-copy .section-h2{font-size:clamp(25px,3vw,36px)}
.evidence-left{grid-column:7/13}
.evidence-list{display:flex;flex-direction:column;gap:14px}
.evidence-item{
  background:#fff;border:1px solid #e6eefb;border-radius:var(--radius);padding:19px 22px;
  display:flex;gap:16px;align-items:flex-start;transition:transform .2s,box-shadow .2s,border-color .2s;
}
.evidence-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:#d3e0f8}
.evidence-icon{
  width:40px;height:40px;min-width:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;
}
.evidence-item:nth-child(even) .evidence-icon{background:var(--accent-soft);color:#e45443}
.evidence-item h4{font-size:15px;color:var(--text-strong);font-weight:700;margin-bottom:3px}
.evidence-item p{font-size:14px;color:var(--text-body);line-height:1.7}
/* quote */
.quote-section{background:#fff}
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.quote-card{
  position:relative;background:#F8FAFE;border:1px solid #e6eef4;border-radius:20px;padding:30px 30px 30px 84px;
  overflow:hidden;transition:transform .24s,box-shadow .24s,border-color .24s;
}
.quote-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(180deg,var(--primary),var(--accent));
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.quote-icon{
  position:absolute;left:28px;top:32px;width:36px;height:36px;border-radius:12px;
  background:#fff;color:var(--accent);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow-xs);
}
.quote-text{color:var(--text-body);font-size:16px;line-height:1.95;margin-bottom:22px}
.quote-user{display:flex;align-items:center;gap:12px}
.quote-avatar{
  width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 0 0 4px #E5EDFF;
}
.quote-card:nth-child(even) .quote-avatar{background:var(--accent);box-shadow:0 0 0 4px #FFE4DE}
.quote-user b{display:block;font-size:14px;color:var(--text-strong)}
.quote-user span{font-size:13px;color:var(--text-muted)}
/* workflow */
.workflow-section{background:var(--bg)}
.workflow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.workflow-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 22px;
  position:relative;transition:transform .24s,box-shadow .24s,border-color .24s;
}
.workflow-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#cddcf8}
.workflow-num{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:16px;margin-bottom:16px;
}
.workflow-card:nth-child(even) .workflow-num{background:var(--accent-soft);color:#eb5c49}
.workflow-card h3{font-size:16px;color:var(--text-strong);font-weight:750;margin-bottom:8px}
.workflow-card p{font-size:14px;color:var(--text-body);line-height:1.85}
/* cta */
.cta-zone{padding-bottom:clamp(64px,8vw,110px)}
.cta-soft{
  background:linear-gradient(105deg,var(--primary-soft) 0%,#F2F6FF 68%,#fff 100%);
  border:1px solid #d8e4ff;border-radius:28px;overflow:hidden;position:relative;padding:clamp(34px,5vw,64px);
}
.cta-soft::before{
  content:"";position:absolute;right:-60px;bottom:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,102,.2),transparent 66%);
}
.cta-soft::after{
  content:"";position:absolute;left:8%;top:-40px;width:220px;height:220px;
  background:url('/assets/images/backpic/back-2.webp') center/cover;opacity:.08;border-radius:32px;
}
.cta-flex{display:flex;align-items:center;justify-content:space-between;gap:28px;position:relative;z-index:2}
.cta-title{color:var(--text-strong);font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.4;margin-bottom:8px}
.cta-sub{color:var(--text-body);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0}
/* footer */
.site-footer{background:#EAF0F8;border-top:1px solid #dce6f2;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:var(--text-strong);margin-bottom:14px}
.footer-brand svg{width:24px;height:24px;color:var(--primary)}
.footer-intro{color:var(--text-muted);font-size:14px;line-height:1.9;margin-bottom:20px;max-width:300px}
.footer-title{font-size:14px;font-weight:700;color:var(--text-strong);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.footer-title::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--accent);display:inline-block}
.footer-links li{margin-bottom:9px}
.footer-links a{font-size:14px;color:var(--text-body)}
.footer-links a:hover{color:var(--primary);padding-left:3px}
.footer-bottom{
  border-top:1px solid #d5e1ef;padding:20px 0 26px;display:flex;align-items:center;
  justify-content:space-between;gap:14px;color:var(--text-muted);font-size:13px;
}
.legal-links{display:flex;gap:20px}
.legal-links a{color:var(--text-muted)}
.legal-links a:hover{color:var(--primary)}
/* tablet */
@media screen and (max-width:1023px){
  .quick-nav{display:none}
  .topbar-row{padding-left:20px;padding-right:20px;gap:12px}
  .brand-text{font-size:19px}
  .scene-row,.scene-row.is-alt{grid-template-columns:1fr}
  .scene-row,.scene-row.is-alt{padding-bottom:70px;margin-bottom:70px}
  .scene-media,.scene-row.is-alt .scene-media{grid-column:1;grid-row:auto}
  .scene-row.is-alt .scene-copy,.scene-copy{grid-column:1;grid-row:auto}
  .scene-media img{aspect-ratio:16/10}
  .evidence-grid{grid-template-columns:1fr}
  .evidence-copy,.evidence-left{grid-column:1}
  .workflow-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
  .site-header{padding:0}
  .topbar-row{flex-wrap:wrap;padding:10px 20px}
  .header-search{order:4;flex-basis:100%;max-width:100%;margin-top:2px}
  .header-search .search-form{width:100%}
  .header-cta{display:none}
  .hamburger{display:inline-flex;order:2;width:42px;height:42px}
  .brand-logo{order:1}
  .header-actions{margin-left:0;order:3}
  .category-nav-inner{padding:0 18px;height:47px}
  .section-h2{font-size:24px}
  .section-sub{font-size:15px}
  .hero-sub{font-size:16px}
  .hero-chips{margin-top:22px}
  .hero-vec{display:none}
  .scenes-hero{padding-bottom:62px}
  .quote-grid{grid-template-columns:1fr}
  .quote-card{padding:26px 22px 26px 64px}
  .quote-icon{left:16px;top:22px;width:34px;height:34px}
  .workflow-grid{grid-template-columns:1fr 1fr;gap:14px}
  .workflow-card{padding:20px 17px}
  .cta-flex{flex-direction:column;align-items:flex-start}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .legal-links{gap:16px}
}
@media(max-width:480px){
  .category-nav-label{display:none}
  .brand-mark{width:34px;height:34px}
  .brand-text{font-size:17px}
  .nav-links a{height:32px;padding:0 12px;font-size:13px}
  .topbar-row{padding:10px 16px}
  .section-h2{line-height:1.4}
  .footer-grid{grid-template-columns:1fr}
  .quote-grid,.workflow-grid{grid-template-columns:1fr}
  .scene-row{gap:20px}
  .scene-copy p{font-size:15px}
  .search-form button span{display:none}
  .search-form button{padding:0 14px}
}