/* roulang page: index */
:root {
            --primary: #1A3A2A;
            --primary-light: #2A4A3A;
            --accent: #C89B3C;
            --accent-dark: #9E7624;
            --bg: #F7F5F0;
            --white: #FFFFFF;
            --text: #1E1E1E;
            --text-light: #5C5C5C;
            --danger: #D44C2F;
            --border: #E5E0D8;
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.18);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1280px;
        }

        *,
        *::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: var(--font-sans);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 32px;
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 24px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }

        /* ===== 导航 ===== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: all var(--transition);
            background: transparent;
        }
        .nav.scrolled {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            padding: 10px 0;
        }
        .nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
            transition: color var(--transition), text-shadow var(--transition);
        }
        .nav.scrolled .nav-logo {
            color: var(--primary);
            text-shadow: none;
        }
        .nav-logo .shield-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent), #B8862D);
            mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 1L3 5v6c0 5.5 3.8 10.7 9 12 5.2-1.3 9-6.5 9-12V5l-9-4z'/%3E%3C/svg%3E") center/contain no-repeat;
            -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 1L3 5v6c0 5.5 3.8 10.7 9 12 5.2-1.3 9-6.5 9-12V5l-9-4z'/%3E%3C/svg%3E") center/contain no-repeat;
            background-color: var(--accent);
            flex-shrink: 0;
        }
        .nav.scrolled .shield-icon {
            background-color: var(--primary);
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 32px;
            align-items: center;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.92);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            transition: color var(--transition);
        }
        .nav.scrolled .nav-links a {
            color: var(--text);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a:hover {
            color: var(--accent);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--accent), #B8862D);
            color: #fff !important;
            padding: 10px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(200, 155, 60, 0.35);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-cta:hover {
            background: linear-gradient(135deg, var(--accent-dark), #8C6320);
            box-shadow: 0 6px 20px rgba(200, 155, 60, 0.5);
            transform: translateY(-1px);
            color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--white);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav.scrolled .hamburger span {
            background: var(--primary);
        }
        .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);
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: rgba(26, 58, 42, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                justify-content: center;
                padding: 60px 40px;
                gap: 28px;
                transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: -4px 0 30px rgba(0, 0, 0, 0.3);
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links a {
                font-size: 1.15rem;
                color: rgba(255, 255, 255, 0.9);
            }
            .nav-links .nav-cta {
                margin-top: 16px;
                text-align: center;
                width: 100%;
            }
            .hamburger {
                display: flex;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .shield-icon {
                width: 26px;
                height: 26px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 58, 42, 0.88) 0%, rgba(0, 0, 0, 0.55) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            padding-top: 80px;
            padding-bottom: 80px;
        }
        .hero-content {
            text-align: left;
        }
        .hero-label {
            display: inline-block;
            background: rgba(200, 155, 60, 0.2);
            border: 1px solid rgba(200, 155, 60, 0.4);
            color: var(--accent);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.06em;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: clamp(2.4rem, 5.5vw, 3.4rem);
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 20px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
            letter-spacing: 0.02em;
        }
        .hero h1 .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 40px;
            max-width: 580px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #B8862D);
            color: #fff;
            box-shadow: 0 6px 22px rgba(200, 155, 60, 0.4);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--accent-dark), #8C6320);
            box-shadow: 0 10px 30px rgba(200, 155, 60, 0.55);
            transform: translateY(-2px);
        }
        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .hero {
                background-attachment: scroll;
            }
            .hero-content {
                text-align: center;
            }
            .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: 100px 0;
        }
        .section-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 48px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
        }

        /* ===== 信任条 ===== */
        .trust-bar {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 32px 0;
            overflow: hidden;
        }
        .trust-bar .container {
            display: flex;
            align-items: center;
            gap: 48px;
            animation: scrollTrust 20s linear infinite;
            width: max-content;
        }
        @keyframes scrollTrust {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }
        .trust-item {
            flex-shrink: 0;
            font-size: 0.95rem;
            color: #aaa;
            font-weight: 500;
            letter-spacing: 0.04em;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .trust-item:hover {
            color: var(--primary);
            border-color: var(--accent);
            background: rgba(200, 155, 60, 0.04);
        }
        @media (max-width: 768px) {
            .trust-bar .container {
                gap: 32px;
            }
        }

        /* ===== 痛点区 ===== */
        .pain-section .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .pain-list {
            list-style: none;
        }
        .pain-list li {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            font-size: 1.08rem;
            color: var(--text);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            line-height: 1.6;
        }
        .pain-list li .pain-icon {
            color: var(--danger);
            font-size: 1.3rem;
            margin-top: 2px;
        }
        .pain-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }
        @media (max-width: 768px) {
            .pain-section .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* ===== 解决方案 2+1 错落栅格 ===== */
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .solution-grid .solution-card:nth-child(3) {
            grid-column: 1 / 2;
            max-width: 480px;
        }
        .solution-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .solution-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .solution-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            background: rgba(26, 58, 42, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.6rem;
            color: var(--accent);
        }
        .solution-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .solution-card p {
            color: var(--text-light);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .solution-card .card-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .solution-card .card-link:hover {
            gap: 10px;
            color: var(--accent-dark);
        }
        @media (max-width: 768px) {
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .solution-grid .solution-card:nth-child(3) {
                grid-column: auto;
                max-width: none;
            }
        }

        /* ===== 优势区 ===== */
        .advantage-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }
        .advantage-item:last-child {
            margin-bottom: 0;
        }
        .advantage-text .adv-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: rgba(26, 58, 42, 0.1);
            line-height: 1;
            margin-bottom: 4px;
        }
        .advantage-text h3 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .advantage-text p {
            color: var(--text-light);
            line-height: 1.7;
        }
        .advantage-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .advantage-item.reverse {
            direction: rtl;
        }
        .advantage-item.reverse .advantage-text {
            direction: ltr;
        }
        @media (max-width: 768px) {
            .advantage-item,
            .advantage-item.reverse {
                grid-template-columns: 1fr;
                gap: 32px;
                direction: ltr;
                margin-bottom: 48px;
            }
        }

        /* ===== 数据区 ===== */
        .stats-section {
            background: #EDEBE4;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--danger);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        /* ===== 证言轮播 ===== */
        .testimonial-carousel {
            display: flex;
            gap: 24px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: 16px;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .testimonial-carousel::-webkit-scrollbar {
            display: none;
        }
        .testimonial-card {
            flex: 0 0 calc(33.333% - 16px);
            min-width: 280px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            scroll-snap-align: start;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .testimonial-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
        }
        .testimonial-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(26, 58, 42, 0.08);
            margin-bottom: 16px;
            overflow: hidden;
        }
        .testimonial-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .testimonial-quote {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.65;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-name {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.9rem;
        }
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .testimonial-cta {
            text-align: center;
            margin-top: 36px;
        }
        @media (max-width: 768px) {
            .testimonial-card {
                flex: 0 0 85%;
            }
        }

        /* ===== 流程 ===== */
        .process-steps {
            display: flex;
            gap: 0;
            align-items: flex-start;
            position: relative;
        }
        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            padding: 0 16px;
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 36px;
            left: calc(50% + 28px);
            width: calc(100% - 56px);
            height: 2px;
            border-top: 2px dashed var(--border);
            z-index: 0;
        }
        .process-step:last-child::after {
            display: none;
        }
        .step-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--white);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent);
            position: relative;
            z-index: 1;
            border: 2px solid var(--border);
        }
        .process-step h4 {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-light);
        }
        @media (max-width: 768px) {
            .process-steps {
                flex-direction: column;
                gap: 0;
            }
            .process-step {
                display: flex;
                align-items: flex-start;
                text-align: left;
                gap: 20px;
                padding: 16px 0;
                position: relative;
            }
            .process-step::after {
                left: 35px;
                top: 36px;
                width: 2px;
                height: calc(100% - 36px);
                border-top: none;
                border-left: 2px dashed var(--border);
            }
            .step-icon {
                width: 56px;
                height: 56px;
                margin: 0;
                flex-shrink: 0;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-question {
            width: 100%;
            background: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            padding: 8px 0;
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--accent);
            font-size: 1.1rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-top: 10px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            padding: 120px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 58, 42, 0.9);
            backdrop-filter: blur(4px);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
        }
        .cta-section .cta-sub {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            margin: 16px 0 36px;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 44px;
        }
        .cta-small {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            margin-top: 16px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary);
            color: #D4CFC4;
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer h5 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
            font-size: 0.95rem;
            letter-spacing: 0.04em;
        }
        .footer p,
        .footer a {
            font-size: 0.9rem;
            line-height: 1.8;
            color: #B0A89C;
        }
        .footer a:hover {
            color: var(--accent);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 6px;
        }
        .qr-placeholder {
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: #999;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 0.8rem;
            color: #8A8076;
            text-align: center;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        /* ===== 装饰纹样 ===== */
        .ornament-divider {
            width: 60px;
            height: 4px;
            background: repeating-linear-gradient(90deg, var(--accent) 0px, var(--accent) 6px, transparent 6px, transparent 10px);
            margin: 24px 0;
            border-radius: 2px;
        }