/* roulang page: index */
:root {
            --color-primary: #D4651F;
            --color-primary-hover: #C0581A;
            --color-primary-active: #A84D15;
            --color-primary-light: #FEF8F0;
            --color-dark: #3B3028;
            --color-gold: #F0A855;
            --color-red: #C7493A;
            --color-bg: #FEFAF5;
            --color-text: #2C2416;
            --color-text-secondary: #7A6F62;
            --color-border: #E8E3DC;
            --shadow-card: 0 2px 12px rgba(59, 48, 40, 0.05);
            --shadow-card-hover: 0 8px 28px rgba(59, 48, 40, 0.10);
            --shadow-button: 0 6px 18px rgba(212, 101, 31, 0.30);
            --shadow-nav: 0 1px 8px rgba(59, 48, 40, 0.08);
            --radius-card: 12px;
            --radius-button: 8px;
            --radius-input: 6px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            font-size: 15px;
            line-height: 1.75;
            font-weight: 400;
            color: #2C2416;
            background-color: #FEFAF5;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #D4651F;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }

        /* 容器 */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 区块垂直间距 */
        .section-spacing {
            padding-top: 100px;
            padding-bottom: 100px;
        }
        @media (max-width: 768px) {
            .section-spacing {
                padding-top: 60px;
                padding-bottom: 60px;
            }
        }

        /* H2 标题装饰线 */
        .section-title {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: #2C2416;
            position: relative;
            padding-left: 56px;
            display: inline-block;
            letter-spacing: 0.01em;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 3px;
            background-color: #D4651F;
            border-radius: 2px;
        }
        @media (max-width: 640px) {
            .section-title {
                font-size: 24px;
                padding-left: 44px;
            }
            .section-title::before {
                width: 30px;
                height: 2px;
            }
        }

        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            transition: background-color 0.35s ease, box-shadow 0.35s ease;
            background-color: transparent;
        }
        .navbar.scrolled {
            background-color: #FEFAF5;
            box-shadow: 0 1px 8px rgba(59, 48, 40, 0.08);
        }
        .navbar .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .navbar .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 18px;
            color: #2C2416;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .navbar .nav-logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, #F0A855 0%, #D4651F 60%, #C0581A 100%);
            flex-shrink: 0;
            position: relative;
            box-shadow: 0 2px 10px rgba(212, 101, 31, 0.25);
        }
        .navbar .nav-logo .logo-icon::after {
            content: '';
            position: absolute;
            inset: 3px;
            border-radius: 50%;
            background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.5) 0%, transparent 60%);
        }
        .navbar .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }
        .navbar .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: #2C2416;
            letter-spacing: 0.02em;
            padding: 6px 0;
            position: relative;
            transition: color 0.25s ease;
        }
        .navbar .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #D4651F;
            border-radius: 1px;
            transition: width 0.3s ease;
        }
        .navbar .nav-links a:hover {
            color: #D4651F;
        }
        .navbar .nav-links a:hover::after {
            width: 100%;
        }
        .navbar .nav-cta-btn {
            padding: 10px 22px;
            background-color: #D4651F;
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.03em;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(212, 101, 31, 0.20);
            border: none;
            cursor: pointer;
        }
        .navbar .nav-cta-btn:hover {
            background-color: #C0581A;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(212, 101, 31, 0.30);
            color: #fff;
        }
        .navbar .nav-cta-btn:active {
            background-color: #A84D15;
            transform: translateY(0);
        }

        /* 汉堡菜单按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background-color: #2C2416;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端导航 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #FEFAF5;
            z-index: 999;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .mobile-menu.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            font-size: 18px;
            font-weight: 600;
            color: #2C2416;
            letter-spacing: 0.03em;
            padding: 10px;
            transition: color 0.25s ease;
        }
        .mobile-menu a:hover {
            color: #D4651F;
        }
        .mobile-menu .mobile-cta {
            margin-top: 12px;
            padding: 14px 36px;
            background-color: #D4651F;
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.03em;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(212, 101, 31, 0.25);
        }
        .mobile-menu .mobile-cta:hover {
            background-color: #C0581A;
            color: #fff;
        }

        @media (max-width: 768px) {
            .navbar .nav-links {
                display: none;
            }
            .navbar .nav-cta-btn {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }

        /* Hero 区 */
        .hero-section {
            min-height: 90vh;
            display: flex;
            align-items: stretch;
            position: relative;
            overflow: hidden;
        }
        .hero-left {
            flex: 1 1 50%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 100px 40px 60px 40px;
            position: relative;
            z-index: 2;
            background-color: #FEFAF5;
        }
        .hero-right {
            flex: 1 1 50%;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 400px;
            overflow: hidden;
        }
        .hero-right::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(212, 101, 31, 0.45) 0%, rgba(59, 48, 40, 0.25) 60%, rgba(240, 168, 85, 0.30) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-floating-card {
            position: absolute;
            bottom: 60px;
            right: 40px;
            z-index: 3;
            background: #fff;
            border-radius: 12px;
            padding: 18px 22px;
            box-shadow: 0 8px 28px rgba(59, 48, 40, 0.12);
            display: flex;
            align-items: center;
            gap: 12px;
            animation: floatCard 4s ease-in-out infinite;
        }
        @keyframes floatCard {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        .hero-floating-card .badge-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: #F0A855;
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(240, 168, 85, 0.5);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(240, 168, 85, 0);
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                flex-direction: column;
                min-height: auto;
            }
            .hero-left {
                flex: auto;
                padding: 90px 20px 40px 20px;
            }
            .hero-right {
                flex: auto;
                min-height: 320px;
                width: 100%;
            }
            .hero-floating-card {
                bottom: 20px;
                right: 16px;
                padding: 12px 16px;
                font-size: 13px;
            }
        }

        /* 亮点卡片 */
        .highlight-card {
            background: #fff;
            border-radius: 12px;
            padding: 32px;
            box-shadow: 0 2px 12px rgba(59, 48, 40, 0.05);
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            border-left: 4px solid #D4651F;
            cursor: default;
        }
        .highlight-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 8px 28px rgba(59, 48, 40, 0.10);
            border-left-width: 6px;
        }
        .highlight-card .card-icon {
            width: 40px;
            height: 40px;
            margin-bottom: 16px;
            color: #D4651F;
        }
        @media (max-width: 640px) {
            .highlight-card {
                padding: 20px;
                border-left-width: 3px;
            }
            .highlight-card:hover {
                border-left-width: 5px;
            }
        }

        /* 案例卡片 */
        .case-item {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 80px;
        }
        .case-item.reverse {
            flex-direction: row-reverse;
        }
        .case-image-wrap {
            flex: 0 0 48%;
            border-radius: 12px;
            overflow: hidden;
            position: relative;
        }
        .case-image-wrap img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: 12px;
            transition: transform 0.5s ease;
        }
        .case-image-wrap:hover img {
            transform: scale(1.04);
        }
        .case-image-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(212, 101, 31, 0.22) 0%, transparent 55%);
            border-radius: 12px;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .case-image-wrap:hover::after {
            opacity: 0;
        }
        .case-text {
            flex: 1;
        }
        @media (max-width: 768px) {
            .case-item,
            .case-item.reverse {
                flex-direction: column;
                gap: 24px;
                margin-bottom: 48px;
            }
            .case-image-wrap {
                flex: auto;
                width: 100%;
            }
            .case-image-wrap img {
                height: 220px;
            }
        }

        /* 方案对比 */
        .compare-card {
            background: #fff;
            border-radius: 12px;
            padding: 36px 32px;
            box-shadow: 0 2px 12px rgba(59, 48, 40, 0.05);
            position: relative;
            transition: all 0.3s ease;
        }
        .compare-card.recommended {
            background: #FEF8F0;
            border: 1px solid #F0A855;
        }
        .compare-card:hover {
            box-shadow: 0 8px 28px rgba(59, 48, 40, 0.10);
            transform: translateY(-3px);
        }
        .badge-recommend {
            display: inline-block;
            background-color: #C7493A;
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            position: absolute;
            top: -12px;
            right: 24px;
        }

        /* FAQ */
        .faq-item {
            background: #fff;
            border-bottom: 1px solid #E8E3DC;
            padding: 16px 0;
            cursor: pointer;
            transition: background-color 0.25s ease;
        }
        .faq-item:hover {
            background-color: #FEFAF5;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 18px;
            font-weight: 600;
            color: #2C2416;
            padding: 8px 0;
            gap: 16px;
            user-select: none;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #D4651F;
            transition: transform 0.3s ease;
            border-radius: 50%;
            background: #FEF8F0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: #D4651F;
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            font-size: 15px;
            line-height: 1.75;
            color: #7A6F62;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 8px;
            padding-bottom: 8px;
        }

        /* CTA 联系区 */
        .cta-section {
            background-color: #3B3028;
            color: #fff;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 14px 16px;
            border-radius: 6px;
            border: 1px solid #E8E3DC;
            background: #fff;
            color: #2C2416;
            font-size: 15px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: #D4651F;
            box-shadow: 0 0 0 3px rgba(212, 101, 31, 0.12);
            outline: none;
        }
        .cta-submit-btn {
            padding: 14px 36px;
            background-color: #D4651F;
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.03em;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(212, 101, 31, 0.30);
            width: 100%;
        }
        .cta-submit-btn:hover {
            background-color: #C0581A;
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(212, 101, 31, 0.40);
            color: #fff;
        }
        .cta-submit-btn:active {
            background-color: #A84D15;
            transform: translateY(0);
        }

        /* 页脚 */
        .site-footer {
            background-color: #3B3028;
            color: #7A6F62;
            padding: 48px 0 24px;
        }
        .site-footer a {
            color: #7A6F62;
            transition: color 0.25s ease;
        }
        .site-footer a:hover {
            color: #F0A855;
        }
        .footer-divider {
            border-top: 1px solid rgba(232, 227, 220, 0.2);
            margin: 28px 0 20px;
        }

        /* 按钮通用 */
        .btn-primary {
            display: inline-block;
            padding: 14px 32px;
            background-color: #D4651F;
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.03em;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(212, 101, 31, 0.20);
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: #C0581A;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(212, 101, 31, 0.30);
            color: #fff;
        }
        .btn-primary:active {
            background-color: #A84D15;
            transform: translateY(0);
        }
        .btn-outline {
            display: inline-block;
            padding: 12px 28px;
            background: transparent;
            color: #D4651F;
            border: 2px solid #D4651F;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.03em;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
        }
        .btn-outline:hover {
            background-color: #D4651F;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(212, 101, 31, 0.25);
        }
        .btn-outline:active {
            background-color: #A84D15;
            border-color: #A84D15;
            transform: translateY(0);
        }

        /* 标签 */
        .tag-warm {
            display: inline-block;
            background-color: #FEF8F0;
            color: #D4651F;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        /* 数据数字 */
        .stat-number {
            font-family: "SF Mono", "Consolas", monospace;
            font-size: 28px;
            font-weight: 700;
            color: #F0A855;
            letter-spacing: 0.02em;
        }

        /* focus 可访问性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid #D4651F;
            outline-offset: 2px;
        }

        /* 触摸目标 */
        @media (max-width: 768px) {
            .navbar .nav-links a,
            .mobile-menu a,
            button,
            .btn-primary,
            .btn-outline,
            .faq-question {
                min-height: 44px;
                display: flex;
                align-items: center;
            }
        }

@media (max-width: 640px) {
                        #highlights .container-custom>div {
                            grid-template-columns: 1fr !important;
                            gap: 16px !important;
                        }
                    }

@media (max-width: 640px) {
                        #compare .container-custom>div {
                            grid-template-columns: 1fr !important;
                            gap: 24px !important;
                        }
                    }

@media (max-width: 640px) {
                                #contactForm>div:first-child {
                                    grid-template-columns: 1fr !important;
                                }
                            }

@media (max-width: 640px) {
                    .site-footer .container-custom>div:first-child {
                        grid-template-columns: 1fr 1fr !important;
                        gap: 20px !important;
                    }
                }