/* roulang page: index */
:root {
            --color-primary: #FF5A00;
            --color-primary-light: #FF7A33;
            --color-primary-gradient: linear-gradient(135deg, #FF5A00 0%, #FF7A33 100%);
            --color-secondary: #1E1E1E;
            --color-accent: #00E676;
            --color-bg: #FFFFFF;
            --color-card-bg: #F7F7F7;
            --color-text: #2B2B2B;
            --color-text-soft: #5A5A5A;
            --color-text-light: #CCCCCC;
            --color-border: #E8E8E8;
            --border-radius-card: 16px;
            --border-radius-btn: 30px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 10px 30px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.07);
            --transition-smooth: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-fast: 0.2s ease;
            --section-spacing: 100px;
            --section-spacing-mobile: 60px;
            --max-width: 1200px;
            --font-heading: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-body);
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            margin: 0 0 0.5em;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--color-secondary);
        }

        h1 {
            font-size: 3.5rem;
            font-weight: 900;
        }
        h2 {
            font-size: 2.6rem;
            font-weight: 700;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 700;
        }
        p {
            margin: 0 0 1em;
            color: var(--color-text-soft);
        }
        p:last-child {
            margin-bottom: 0;
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 顶部信息条 ========== */
        .top-info-bar {
            background-color: var(--color-secondary);
            color: #FFFFFF;
            height: 40px;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            z-index: 1001;
            position: relative;
        }
        .top-info-bar .container-custom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .top-info-bar .domain-text {
            color: #AAAAAA;
            letter-spacing: 0.03em;
        }
        .top-info-bar .hotline-wrap {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-info-bar .hotline-number {
            color: #FFFFFF;
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .online-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-accent);
            margin-right: 6px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(0, 230, 118, 0);
            }
        }
        .top-info-bar .quick-consult {
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.04em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .top-info-bar .quick-consult:hover {
            color: #FFFFFF;
        }

        /* ========== 主导航 ========== */
        .main-nav-wrap {
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        .main-nav-wrap.scrolled {
            background: #FFFFFF;
            box-shadow: var(--shadow-nav);
        }
        .main-nav-wrap:not(.scrolled) {
            background: transparent;
        }
        .main-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--color-secondary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .logo-brand .logo-arrow {
            display: inline-block;
            color: var(--color-primary);
            font-size: 1.3rem;
            transform: rotate(-30deg);
            transition: transform var(--transition-smooth);
        }
        .logo-brand:hover .logo-arrow {
            transform: rotate(0deg) scale(1.15);
        }
        .main-nav-wrap:not(.scrolled) .logo-brand {
            color: #FFFFFF;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
        }
        .main-nav-wrap:not(.scrolled) .logo-brand .logo-arrow {
            color: var(--color-primary-light);
        }

        /* Foundation top-bar 覆盖 */
        .custom-top-bar {
            background: transparent !important;
            padding: 0 !important;
            flex: 1;
            display: flex;
            justify-content: flex-end;
        }
        .custom-top-bar ul.menu {
            background: transparent !important;
            flex-wrap: wrap;
            gap: 2px;
        }
        .custom-top-bar ul.menu>li>a {
            color: var(--color-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 10px 16px;
            letter-spacing: 0.03em;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .main-nav-wrap:not(.scrolled) .custom-top-bar ul.menu>li>a {
            color: #FFFFFF;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
        }
        .custom-top-bar ul.menu>li>a::after {
            content: '';
            position: absolute;
            bottom: 6px;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 1px;
            transition: width var(--transition-smooth), left var(--transition-smooth);
        }
        .custom-top-bar ul.menu>li>a:hover::after,
        .custom-top-bar ul.menu>li.active>a::after {
            width: 60%;
            left: 20%;
        }
        .custom-top-bar ul.menu>li>a:hover {
            color: var(--color-primary);
        }
        .main-nav-wrap:not(.scrolled) .custom-top-bar ul.menu>li>a:hover {
            color: #FFFFFF;
        }

        /* 移动端 title-bar */
        .title-bar {
            background: transparent !important;
            padding: 0 !important;
        }
        .title-bar .menu-icon {
            cursor: pointer;
            display: inline-block;
            width: 28px;
            height: 20px;
            position: relative;
        }
        .title-bar .menu-icon::after {
            background: var(--color-secondary);
            box-shadow: 0 7px 0 var(--color-secondary), 0 14px 0 var(--color-secondary);
            height: 2px;
            width: 100%;
            content: '';
            position: absolute;
            left: 0;
            top: 0;
        }
        .main-nav-wrap:not(.scrolled) .title-bar .menu-icon::after {
            background: #FFFFFF;
            box-shadow: 0 7px 0 #FFFFFF, 0 14px 0 #FFFFFF;
        }
        .title-bar-title {
            font-weight: 700;
            color: var(--color-secondary);
            font-family: var(--font-heading);
        }
        .main-nav-wrap:not(.scrolled) .title-bar-title {
            color: #FFFFFF;
        }

        /* 响应式菜单面板 */
        #responsive-menu {
            background: #FFFFFF;
            border-radius: 0 0 var(--border-radius-card) var(--border-radius-card);
            box-shadow: var(--shadow-card-hover);
            overflow: hidden;
        }
        #responsive-menu ul.menu.vertical>li>a {
            padding: 14px 20px;
            font-weight: 500;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-secondary);
            transition: background var(--transition-fast), color var(--transition-fast);
        }
        #responsive-menu ul.menu.vertical>li>a:hover {
            background: #FFF6F0;
            color: var(--color-primary);
        }

        @media screen and (max-width: 640px) {
            .main-nav-inner {
                height: 60px;
                padding: 0 16px;
            }
            .logo-brand {
                font-size: 1.3rem;
            }
            .top-info-bar {
                height: 34px;
                font-size: 0.75rem;
            }
            .top-info-bar .hotline-wrap {
                gap: 8px;
            }
            .top-info-bar .quick-consult {
                font-size: 0.75rem;
            }
        }

        /* ========== Hero 区块 ========== */
        #hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            background-attachment: fixed;
            margin-top: -110px;
            padding-top: 110px;
            overflow: hidden;
        }
        #hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(30, 30, 30, 0.15) 0%, rgba(30, 30, 30, 0.75) 70%, rgba(30, 30, 30, 0.9) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
        }
        .hero-content h1 {
            color: #FFFFFF;
            font-size: 3.5rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 0.3em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
            animation: fadeInUp 0.8s var(--transition-smooth) both;
        }
        .hero-content .hero-subtitle {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.25rem;
            font-weight: 500;
            line-height: 1.7;
            margin-bottom: 2em;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
            animation: fadeInUp 1s var(--transition-smooth) both;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            animation: fadeInUp 1.2s var(--transition-smooth) both;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 50px;
            padding: 0 32px;
            border-radius: var(--border-radius-btn);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.04em;
            cursor: pointer;
            border: none;
            background: var(--color-primary-gradient);
            color: #FFFFFF;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(255, 90, 0, 0.35);
            white-space: nowrap;
        }
        .btn-solid:hover {
            box-shadow: 0 8px 28px rgba(255, 90, 0, 0.5);
            transform: translateY(-2px);
            color: #FFFFFF;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 50px;
            padding: 0 32px;
            border-radius: var(--border-radius-btn);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.04em;
            cursor: pointer;
            border: 2px solid #FFFFFF;
            background: transparent;
            color: #FFFFFF;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }
        .btn-outline:hover {
            background: #FFFFFF;
            color: var(--color-primary);
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }
        .scroll-down-hint {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: #FFFFFF;
            font-size: 0.85rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            animation: bounceDown 2s infinite;
            opacity: 0.8;
        }
        .scroll-down-hint i {
            font-size: 1.4rem;
        }
        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }
        @media screen and (max-width: 1024px) {
            #hero {
                margin-top: -100px;
                padding-top: 100px;
                background-attachment: scroll;
                min-height: 90vh;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
        }
        @media screen and (max-width: 640px) {
            #hero {
                margin-top: -94px;
                padding-top: 94px;
                min-height: 85vh;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content .hero-subtitle {
                font-size: 1.05rem;
            }
            .btn-solid,
            .btn-outline {
                height: 44px;
                padding: 0 24px;
                font-size: 0.9rem;
            }
            .hero-buttons {
                gap: 12px;
            }
        }

        /* ========== 通用区块样式 ========== */
        .section-block {
            padding: var(--section-spacing) 0;
        }
        .section-block .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-block .section-header h2 {
            margin-bottom: 0.3em;
        }
        .section-block .section-header .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-soft);
            max-width: 600px;
            margin: 0 auto;
        }
        @media screen and (max-width: 640px) {
            .section-block {
                padding: var(--section-spacing-mobile) 0;
            }
            .section-block .section-header {
                margin-bottom: 32px;
            }
            .section-block .section-header h2 {
                font-size: 1.8rem;
            }
            .section-block .section-header .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ========== 服务卡片 ========== */
        #services .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .service-card {
            background: var(--color-card-bg);
            border-radius: var(--border-radius-card);
            padding: 36px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .service-card.card-offset-up {
            transform: translateY(-10px);
        }
        .service-card.card-offset-down {
            transform: translateY(10px);
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
        }
        .service-card.card-offset-up:hover {
            transform: translateY(-16px);
        }
        .service-card.card-offset-down:hover {
            transform: translateY(4px);
        }
        .service-card .card-icon-circle {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255, 90, 0, 0.08);
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition-smooth);
        }
        .service-card:hover .card-icon-circle {
            background: rgba(255, 90, 0, 0.16);
        }
        .service-card .card-icon-circle i,
        .service-card .card-icon-circle svg {
            color: var(--color-primary);
            font-size: 2rem;
            transition: transform var(--transition-smooth);
        }
        .service-card:hover .card-icon-circle i,
        .service-card:hover .card-icon-circle svg {
            transform: scale(1.12);
        }
        .service-card h3 {
            margin-bottom: 0.4em;
            font-size: 1.35rem;
        }
        .service-card p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .service-card .card-hover-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.9rem;
            opacity: 0;
            transform: translateY(8px);
            transition: all var(--transition-smooth);
            pointer-events: none;
        }
        .service-card:hover .card-hover-link {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .service-card .card-hover-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }
        .service-card .card-hover-link:hover i {
            transform: translateX(4px);
        }
        @media screen and (max-width: 1024px) {
            #services .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .service-card.card-offset-up,
            .service-card.card-offset-down {
                transform: translateY(0);
            }
            .service-card.card-offset-up:hover,
            .service-card.card-offset-down:hover {
                transform: translateY(-6px);
            }
        }
        @media screen and (max-width: 640px) {
            #services .services-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 0 16px;
            }
            .service-card {
                padding: 28px 20px;
            }
            .service-card .card-hover-link {
                opacity: 1;
                transform: translateY(0);
                pointer-events: auto;
            }
        }

        /* ========== 企业优势 ========== */
        #advantages {
            background: var(--color-card-bg);
        }
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            text-align: center;
        }
        .advantage-item .adv-number {
            font-family: var(--font-heading);
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--color-primary);
            letter-spacing: -0.03em;
            line-height: 1;
        }
        .advantage-item .adv-label {
            margin-top: 8px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-soft);
            letter-spacing: 0.02em;
        }
        @media screen and (max-width: 1024px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .advantage-item .adv-number {
                font-size: 2.6rem;
            }
        }
        @media screen and (max-width: 640px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                padding: 0 16px;
            }
            .advantage-item .adv-number {
                font-size: 2.2rem;
            }
            .advantage-item .adv-label {
                font-size: 0.9rem;
            }
        }

        /* ========== 案例展示 ========== */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            grid-template-rows: auto auto;
            gap: 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .case-card {
            position: relative;
            border-radius: var(--border-radius-card);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .case-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .case-card:hover img {
            transform: scale(1.06);
        }
        .case-card .case-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(30, 30, 30, 0.85) 0%, rgba(30, 30, 30, 0.2) 50%, rgba(30, 30, 30, 0) 100%);
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            padding: 24px 22px;
            pointer-events: none;
        }
        .case-card .case-title {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 0.02em;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
        }
        .case-card .case-tag {
            background: var(--color-primary);
            color: #FFFFFF;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            white-space: nowrap;
            text-shadow: none;
            pointer-events: auto;
        }
        .case-card:nth-child(2) {
            margin-top: 16px;
        }
        .case-card:nth-child(3) {
            margin-top: -16px;
        }
        .cases-view-all {
            text-align: center;
            margin-top: 36px;
        }
        .cases-view-all a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.04em;
            transition: gap var(--transition-fast);
        }
        .cases-view-all a:hover {
            gap: 14px;
        }
        @media screen and (max-width: 768px) {
            .cases-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
                padding: 0 16px;
            }
            .case-card:nth-child(2),
            .case-card:nth-child(3) {
                margin-top: 0;
            }
            .case-card .case-overlay {
                padding: 16px 14px;
            }
            .case-card .case-title {
                font-size: 0.95rem;
            }
            .case-card .case-tag {
                font-size: 0.7rem;
                padding: 4px 10px;
            }
        }
        @media screen and (max-width: 520px) {
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .case-card {
                aspect-ratio: 16 / 9;
            }
        }

        /* ========== 解决方案 ========== */
        #solutions {
            background: var(--color-card-bg);
        }
        .solutions-flow {
            display: flex;
            align-items: flex-start;
            gap: 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
        }
        .solution-step {
            flex: 1;
            text-align: center;
            position: relative;
            padding: 20px 16px;
            background: #FFFFFF;
            border-radius: var(--border-radius-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            z-index: 1;
        }
        .solution-step:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
        }
        .solution-step .step-number {
            font-family: var(--font-heading);
            font-size: 4rem;
            font-weight: 900;
            color: rgba(255, 90, 0, 0.1);
            line-height: 1;
            letter-spacing: -0.04em;
            transition: color var(--transition-smooth);
        }
        .solution-step:hover .step-number {
            color: rgba(255, 90, 0, 0.25);
        }
        .solution-step h3 {
            margin: 8px 0 6px;
            font-size: 1.2rem;
        }
        .solution-step p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.5;
        }
        .solution-connector {
            display: flex;
            align-items: center;
            padding: 0 8px;
            flex-shrink: 0;
            z-index: 0;
            align-self: center;
            color: var(--color-primary);
            font-size: 1.5rem;
            opacity: 0.6;
        }
        @media screen and (max-width: 768px) {
            .solutions-flow {
                flex-direction: column;
                gap: 20px;
                padding: 0 16px;
            }
            .solution-connector {
                transform: rotate(90deg);
                padding: 0;
                align-self: center;
                font-size: 1.2rem;
            }
            .solution-step {
                padding: 20px 18px;
            }
            .solution-step .step-number {
                font-size: 3rem;
            }
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .faq-wrap .accordion {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .faq-wrap .accordion-item {
            margin-bottom: 12px;
            border-radius: var(--border-radius-card);
            overflow: hidden;
            background: #FFFFFF;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
        }
        .faq-wrap .accordion-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-wrap .accordion-title {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-secondary);
            cursor: pointer;
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
            position: relative;
            text-decoration: none;
        }
        .faq-wrap .accordion-title:hover {
            color: var(--color-primary);
        }
        .faq-wrap .accordion-title .q-icon {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .faq-wrap .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            margin-left: auto;
            transition: transform var(--transition-smooth);
            color: var(--color-text-soft);
            font-size: 0.8rem;
        }
        .faq-wrap .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-wrap .accordion-content {
            padding: 0 22px 18px;
            color: var(--color-text-soft);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }
        .faq-wrap .accordion-item.is-active .accordion-content {
            display: block;
        }
        .faq-cta {
            text-align: center;
            margin-top: 40px;
        }
        @media screen and (max-width: 640px) {
            .faq-wrap {
                padding: 0 16px;
            }
            .faq-wrap .accordion-title {
                padding: 15px 16px;
                font-size: 0.95rem;
            }
            .faq-wrap .accordion-content {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }
        }

        /* ========== 联系与 CTA ========== */
        #contact .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            align-items: start;
        }
        .contact-form-panel {
            background: var(--color-card-bg);
            border-radius: var(--border-radius-card);
            padding: 36px 30px;
            box-shadow: var(--shadow-card);
        }
        .contact-form-panel h3 {
            margin-bottom: 20px;
        }
        .contact-form-panel .form-group {
            margin-bottom: 16px;
        }
        .contact-form-panel label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            font-size: 0.9rem;
            color: var(--color-secondary);
            letter-spacing: 0.02em;
        }
        .contact-form-panel input,
        .contact-form-panel textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--color-border);
            border-radius: 10px;
            font-size: 0.95rem;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: #FFFFFF;
            resize: vertical;
        }
        .contact-form-panel input:focus,
        .contact-form-panel textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 90, 0, 0.08);
            outline: none;
        }
        .contact-form-panel textarea {
            min-height: 120px;
        }
        .contact-form-panel .btn-solid {
            width: 100%;
            justify-content: center;
            font-size: 1rem;
            height: 50px;
        }
        .contact-info-panel {
            padding: 20px 0;
        }
        .contact-info-panel h3 {
            margin-bottom: 16px;
        }
        .contact-info-panel .info-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            color: var(--color-text-soft);
            font-size: 0.95rem;
        }
        .contact-info-panel .info-item i {
            color: var(--color-primary);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .contact-map-placeholder {
            background: var(--color-card-bg);
            border-radius: var(--border-radius-card);
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-soft);
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            margin-top: 20px;
        }
        @media screen and (max-width: 768px) {
            #contact .contact-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 0 16px;
            }
            .contact-form-panel {
                padding: 28px 20px;
            }
        }

        /* ========== 页脚口号横幅 ========== */
        .footer-slogan-bar {
            background: var(--color-primary-gradient);
            text-align: center;
            padding: 36px 20px;
            color: #FFFFFF;
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        @media screen and (max-width: 640px) {
            .footer-slogan-bar {
                font-size: 1.2rem;
                padding: 28px 16px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-secondary);
            color: var(--color-text-light);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 36px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-col h4 {
            color: #FFFFFF;
            font-size: 1.1rem;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col p {
            color: var(--color-text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--color-text-light);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-primary-light);
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 30px auto 0;
            padding: 20px 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.85rem;
            color: #888888;
        }
        @media screen and (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 0 16px;
            }
        }

        /* ========== Foundation 覆盖 ========== */
        .top-bar,
        .top-bar ul {
            background: transparent;
        }
        .menu>li>a {
            text-decoration: none;
        }
        .accordion-title {
            text-decoration: none !important;
            border: none !important;
        }
        .accordion-content {
            border: none !important;
        }
        [data-tab-content] {
            display: none;
        }
        .is-active>[data-tab-content] {
            display: block;
        }

        /* ========== 返回顶部按钮 ========== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(255, 90, 0, 0.4);
            border: none;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--color-primary-light);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(255, 90, 0, 0.5);
        }