/* roulang page: index */
:root {
            --gold: #D4A74E;
            --gold-light: #E8C97A;
            --gold-dark: #B8923D;
            --deep-gray: #2B2523;
            --deep-gray-light: #3D3633;
            --champagne: #F9F6F0;
            --champagne-dark: #EFE8DA;
            --wine: #722F37;
            --white: #FFFFFF;
            --text-primary: #2B2523;
            --text-secondary: #5C5451;
            --text-light: #8A827E;
            --border-light: #E5DFD5;
            --gradient-brand: linear-gradient(135deg, #D4A74E 0%, #B8923D 30%, #722F37 100%);
            --gradient-gold: linear-gradient(135deg, #D4A74E 0%, #E8C97A 50%, #B8923D 100%);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.16);
            --nav-width: 72px;
            --mobile-nav-height: 56px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-number: 'Inter', 'Manrope', 'SF Pro Display', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--champagne);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            transition: margin-left var(--transition-smooth);
        }

        @media (min-width: 1024px) {
            body {
                margin-left: var(--nav-width);
            }
        }

        @media (max-width: 1023px) {
            body {
                margin-top: var(--mobile-nav-height);
                margin-left: 0;
            }
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            margin: 0;
            line-height: 1.3;
        }

        h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        h2 {
            font-size: 26px;
            font-weight: 700;
        }
        h3 {
            font-size: 20px;
            font-weight: 600;
        }
        p {
            margin: 0 0 1em;
            color: var(--text-secondary);
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--gold-dark);
            margin-bottom: 8px;
            font-family: var(--font-body);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-family: var(--font-heading);
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            font-weight: 400;
            line-height: 1.6;
            max-width: 600px;
        }

        .gradient-text {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        /* ========== 桌面端左侧导航 ========== */
        .side-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--deep-gray);
            z-index: 1000;
            flex-direction: column;
            align-items: center;
            padding: 24px 0;
            box-shadow: 2px 0 16px rgba(0, 0, 0, 0.15);
        }
        @media (min-width: 1024px) {
            .side-nav {
                display: flex;
            }
        }
        .side-nav-logo {
            font-family: var(--font-heading);
            font-size: 14px;
            font-weight: 700;
            color: var(--gold);
            writing-mode: vertical-rl;
            letter-spacing: 0.12em;
            margin-bottom: 40px;
            text-align: center;
            line-height: 1.1;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            height: auto;
            min-height: 70px;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .side-nav-logo:hover {
            color: var(--gold-light);
        }
        .side-nav-links {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .side-nav-links li {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .side-nav-link {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            padding: 10px 6px;
            color: #99908C;
            font-size: 11px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            text-align: center;
            position: relative;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.04em;
            min-width: 52px;
        }
        .side-nav-link i {
            font-size: 18px;
            transition: color var(--transition-fast);
        }
        .side-nav-link:hover {
            color: var(--gold-light);
        }
        .side-nav-link.active {
            color: var(--gold);
        }
        .side-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
        }

        /* ========== 移动端顶部导航 ========== */
        .mobile-nav {
            display: flex;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--mobile-nav-height);
            background: rgba(43, 37, 35, 0.97);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 1000;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        @media (min-width: 1024px) {
            .mobile-nav {
                display: none;
            }
        }
        .mobile-nav-logo {
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 0.06em;
        }
        .mobile-hamburger {
            width: 36px;
            height: 36px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
            z-index: 1001;
        }
        .mobile-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--gold);
            border-radius: 1px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }
        .mobile-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--mobile-nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(43, 37, 35, 0.98);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 40px 20px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu-link {
            display: block;
            font-size: 18px;
            font-weight: 600;
            color: #C5BFB8;
            padding: 14px 28px;
            text-align: center;
            letter-spacing: 0.06em;
            transition: all var(--transition-fast);
            border-radius: var(--radius-md);
            text-decoration: none;
            width: 100%;
            max-width: 280px;
        }
        .mobile-menu-link:hover,
        .mobile-menu-link:active {
            color: var(--gold);
            background: rgba(212, 167, 78, 0.08);
        }

        /* ========== 主内容区 ========== */
        .main-content {
            min-height: 100vh;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (max-width: 639px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ========== 板块间距 ========== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 639px) {
            .section-padding {
                padding: 50px 0;
            }
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-xl);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
            text-decoration: none;
            letter-spacing: 0.03em;
            font-family: var(--font-body);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gradient-brand);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(114, 47, 55, 0.25);
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(114, 47, 55, 0.35);
            color: #FFFFFF;
        }
        .btn-outline {
            background: transparent;
            color: var(--gold-dark);
            border: 2px solid var(--gold);
        }
        .btn-outline:hover {
            background: var(--gradient-brand);
            color: #FFFFFF;
            border-color: transparent;
            transform: scale(1.02);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 20px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: 32px;
        }

        /* ========== Hero 首屏 ========== */
        #hero {
            background: var(--champagne);
            position: relative;
            overflow: hidden;
            min-height: 85vh;
            display: flex;
            align-items: center;
        }
        @media (max-width: 639px) {
            #hero {
                min-height: auto;
                padding: 40px 0 50px;
            }
        }
        .hero-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            width: 100%;
        }
        @media (max-width: 1023px) {
            .hero-inner {
                flex-direction: column;
                gap: 28px;
            }
        }
        .hero-left {
            flex: 0 0 55%;
            padding-right: 20px;
        }
        @media (max-width: 1023px) {
            .hero-left {
                flex: 1 1 auto;
                padding-right: 0;
                text-align: center;
                display: flex;
                flex-direction: column;
                align-items: center;
            }
        }
        .hero-right {
            flex: 0 0 45%;
            position: relative;
        }
        @media (max-width: 1023px) {
            .hero-right {
                flex: 1 1 auto;
                width: 100%;
                max-width: 500px;
            }
        }
        .hero-right img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform var(--transition-smooth);
        }
        .hero-right img:hover {
            transform: scale(1.01);
        }
        .hero-image-tag {
            position: absolute;
            bottom: 20px;
            right: -10px;
            background: var(--deep-gray);
            color: var(--gold);
            font-size: 12px;
            font-weight: 600;
            padding: 7px 14px;
            border-radius: 20px;
            letter-spacing: 0.06em;
            box-shadow: var(--shadow-md);
        }
        @media (max-width: 639px) {
            .hero-image-tag {
                right: 0;
                bottom: 10px;
                font-size: 10px;
                padding: 5px 10px;
            }
        }
        .hero-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.25;
            font-family: var(--font-heading);
        }
        @media (max-width: 639px) {
            .hero-title {
                font-size: 26px;
            }
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 480px;
        }
        @media (max-width: 1023px) {
            .hero-subtitle {
                max-width: 100%;
            }
        }
        .hero-badges {
            display: flex;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        @media (max-width: 1023px) {
            .hero-badges {
                justify-content: center;
            }
        }
        .hero-badge {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: var(--white);
            border: 1.5px solid var(--gold);
            border-radius: 50%;
            width: 90px;
            height: 90px;
            justify-content: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        @media (max-width: 639px) {
            .hero-badge {
                width: 72px;
                height: 72px;
            }
        }
        .hero-badge:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--gold-dark);
        }
        .hero-badge-number {
            font-family: var(--font-number);
            font-size: 28px;
            font-weight: 700;
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
        }
        @media (max-width: 639px) {
            .hero-badge-number {
                font-size: 22px;
            }
        }
        .hero-badge-label {
            font-size: 10px;
            color: var(--text-light);
            margin-top: 2px;
            letter-spacing: 0.04em;
        }
        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        @media (max-width: 1023px) {
            .hero-cta-group {
                justify-content: center;
            }
        }

        /* ========== 亮点网格 ========== */
        #highlights {
            background: var(--white);
        }
        .highlights-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .highlights-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }
        .highlight-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            text-align: center;
            flex: 1 1 calc(33.333% - 20px);
            min-width: 260px;
            max-width: 360px;
            border: 1px solid transparent;
        }
        @media (max-width: 1023px) {
            .highlight-card {
                flex: 1 1 calc(50% - 20px);
                min-width: 240px;
                max-width: 340px;
            }
        }
        @media (max-width: 639px) {
            .highlight-card {
                flex: 1 1 100%;
                min-width: auto;
                max-width: 100%;
            }
        }
        .highlight-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--gold);
        }
        .highlight-card-icon {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: var(--champagne);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 22px;
            color: var(--gold-dark);
            transition: all var(--transition-fast);
        }
        .highlight-card:hover .highlight-card-icon {
            background: var(--gradient-brand);
            color: #FFFFFF;
        }
        .highlight-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            font-family: var(--font-heading);
        }
        .highlight-card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .highlight-badge-mini {
            display: inline-block;
            margin-top: 10px;
            font-family: var(--font-number);
            font-size: 22px;
            font-weight: 700;
            background: var(--gradient-gold);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
        }
        .highlight-badge-mini small {
            font-size: 12px;
            display: inline;
            -webkit-text-fill-color: var(--gold-dark);
        }

        /* ========== 案例瀑布 ========== */
        #cases {
            background: var(--champagne);
        }
        .cases-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .cases-waterfall {
            column-count: 3;
            column-gap: 20px;
        }
        @media (max-width: 1023px) {
            .cases-waterfall {
                column-count: 2;
            }
        }
        @media (max-width: 639px) {
            .cases-waterfall {
                column-count: 1;
            }
        }
        .case-card {
            break-inside: avoid;
            margin-bottom: 20px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--white);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .case-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .case-card-image-wrap {
            position: relative;
            overflow: hidden;
        }
        .case-card-image-wrap img {
            width: 100%;
            display: block;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform 0.5s ease;
        }
        .case-card:hover .case-card-image-wrap img {
            transform: scale(1.04);
        }
        .case-card-image-wrap::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 55%;
            background: linear-gradient(to top, rgba(43, 37, 35, 0.85) 0%, rgba(43, 37, 35, 0.3) 60%, transparent 100%);
            pointer-events: none;
        }
        .case-card-badge-vip {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--gold);
            color: #FFFFFF;
            font-size: 10px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            letter-spacing: 0.06em;
            z-index: 2;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
        }
        .case-card-body {
            padding: 16px 18px;
            position: relative;
            z-index: 1;
        }
        .case-card-tag {
            display: inline-block;
            font-size: 11px;
            color: var(--gold-dark);
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 6px;
            text-transform: uppercase;
        }
        .case-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 5px;
            line-height: 1.3;
        }
        .case-card-excerpt {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ========== 方案对比 ========== */
        #compare {
            background: var(--white);
        }
        .compare-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .compare-grid {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            align-items: stretch;
        }
        .compare-card {
            flex: 1 1 calc(33.333% - 20px);
            min-width: 270px;
            max-width: 360px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 2px solid var(--border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            position: relative;
            text-align: center;
        }
        @media (max-width: 1023px) {
            .compare-card {
                flex: 1 1 calc(50% - 20px);
                min-width: 250px;
                max-width: 340px;
            }
        }
        @media (max-width: 639px) {
            .compare-card {
                flex: 1 1 100%;
                min-width: auto;
                max-width: 100%;
            }
        }
        .compare-card.featured {
            border-color: var(--gold);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            background: linear-gradient(180deg, #FFFDF8 0%, #FFFFFF 100%);
            z-index: 1;
        }
        @media (max-width: 639px) {
            .compare-card.featured {
                transform: scale(1);
            }
        }
        .compare-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .compare-badge-recommend {
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gradient-brand);
            color: #FFFFFF;
            font-size: 11px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 14px;
            letter-spacing: 0.06em;
            white-space: nowrap;
            box-shadow: 0 4px 12px rgba(114, 47, 55, 0.3);
        }
        .compare-card-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
            font-family: var(--font-heading);
        }
        .compare-card-price-hint {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .compare-card-features {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
            flex: 1;
            text-align: left;
        }
        .compare-card-features li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card-features li:last-child {
            border-bottom: none;
        }
        .compare-card-features li i {
            color: var(--gold-dark);
            font-size: 13px;
            flex-shrink: 0;
        }
        .compare-card .btn {
            margin-top: auto;
            width: 100%;
        }

        /* ========== 联系与FAQ ========== */
        #contact {
            background: var(--champagne);
        }
        .contact-layout {
            display: flex;
            gap: 40px;
            align-items: flex-start;
        }
        @media (max-width: 1023px) {
            .contact-layout {
                flex-direction: column;
                gap: 30px;
            }
        }
        .contact-form-wrap {
            flex: 0 0 58%;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            box-shadow: var(--shadow-sm);
        }
        @media (max-width: 1023px) {
            .contact-form-wrap {
                flex: 1 1 auto;
                width: 100%;
            }
        }
        .contact-form-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            font-family: var(--font-heading);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 5px;
            letter-spacing: 0.03em;
        }
        .form-input {
            width: 100%;
            padding: 12px 0;
            font-size: 15px;
            border: none;
            border-bottom: 1.5px solid var(--border-light);
            background: transparent;
            outline: none;
            transition: all var(--transition-fast);
            color: var(--text-primary);
            font-family: var(--font-body);
        }
        .form-input:focus {
            border-bottom-color: var(--gold);
            border-bottom-width: 2.5px;
        }
        .form-input::placeholder {
            color: #C5BFB8;
            font-size: 14px;
        }
        textarea.form-input {
            resize: vertical;
            min-height: 80px;
            padding-top: 8px;
        }
        .form-submit {
            margin-top: 8px;
        }
        .contact-info-side {
            flex: 0 0 38%;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
        }
        @media (max-width: 1023px) {
            .contact-info-side {
                flex: 1 1 auto;
                width: 100%;
            }
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
        }
        .contact-info-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .contact-info-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--champagne);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--gold-dark);
            flex-shrink: 0;
        }
        .contact-info-text strong {
            display: block;
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 600;
        }
        .contact-info-text span {
            font-size: 13px;
            color: var(--text-light);
        }
        .wechat-entry {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 8px;
            padding: 10px 14px;
            background: var(--champagne);
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--text-primary);
            font-weight: 500;
        }
        .wechat-entry i {
            color: #07C160;
            font-size: 20px;
        }

        /* FAQ */
        .faq-section {
            margin-top: 40px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            box-shadow: var(--shadow-sm);
        }
        .faq-section-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            font-family: var(--font-heading);
            text-align: center;
        }
        .accordion {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .accordion-item {
            border-bottom: 1px solid var(--border-light);
            margin: 0;
            list-style: none;
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-title {
            display: block;
            padding: 15px 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            position: relative;
            text-decoration: none;
            transition: color var(--transition-fast);
            font-family: var(--font-body);
            line-height: 1.4;
            letter-spacing: 0.02em;
        }
        .accordion-title:hover {
            color: var(--gold-dark);
        }
        .accordion-title::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gold);
            font-size: 16px;
            transition: transform var(--transition-fast);
        }
        .accordion-item.is-active .accordion-title::after {
            transform: translateY(-50%) rotate(180deg);
        }
        .accordion-content {
            display: none;
            padding: 0 8px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            background: #FDFBF6;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }
        .accordion-item.is-active .accordion-title {
            color: var(--gold-dark);
        }

        /* ========== 页脚 ========== */
        #footer {
            background: var(--deep-gray);
            color: #C5BFB8;
            padding: 40px 0 28px;
            position: relative;
        }
        #footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 5%;
            right: 5%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--gold), transparent);
            opacity: 0.6;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
            justify-content: space-between;
        }
        @media (max-width: 639px) {
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
        }
        .footer-logo {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 0.08em;
        }
        .footer-desc {
            font-size: 13px;
            color: #99908C;
            max-width: 320px;
            line-height: 1.6;
        }
        .footer-copyright {
            font-size: 12px;
            color: #77706C;
            flex-shrink: 0;
        }
        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
        }
        .footer-social-icons a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--deep-gray-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #99908C;
            font-size: 15px;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .footer-social-icons a:hover {
            background: var(--gold);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .footer-privacy-link {
            font-size: 12px;
            color: #99908C;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-privacy-link:hover {
            color: var(--gold);
        }

        /* ========== 回到顶部 ========== */
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--gold);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            z-index: 900;
            transition: all var(--transition-fast);
            border: none;
            opacity: 0;
            pointer-events: none;
            transform: translateY(10px);
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--gold-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        /* ========== Foundation 覆盖 ========== */
        .row {
            max-width: 100%;
        }
        .row .row {
            margin-left: 0;
            margin-right: 0;
        }
        button:focus,
        a:focus {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }
        .accordion-title:focus {
            outline: 2px solid var(--gold);
            outline-offset: -2px;
            border-radius: 4px;
        }

        /* ========== 响应式细调 ========== */
        @media (max-width: 639px) {
            h1 {
                font-size: 24px;
            }
            h2 {
                font-size: 20px;
            }
            .section-title {
                font-size: 22px;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 14px;
            }
            .btn-lg {
                padding: 13px 26px;
                font-size: 15px;
            }
            .compare-card {
                padding: 22px 16px;
            }
            .contact-form-wrap {
                padding: 22px 16px;
            }
            .faq-section {
                padding: 20px 14px;
            }
        }
        @media (min-width: 640px) and (max-width: 1023px) {
            .hero-title {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
        }