/* roulang page: index */
:root {
            --bg-deep: #0A1628;
            --bg-darker: #050D17;
            --surface: #14294D;
            --green: #00E676;
            --green-dark: #00C853;
            --orange: #FF6D00;
            --text-primary: #C8D6E5;
            --text-muted: #94ADCF;
            --text-dim: #8395B7;
            --white: #FFFFFF;
            --card-bg: rgba(20, 41, 77, 0.55);
            --card-border: rgba(0, 230, 118, 0.25);
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 30px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 12px 40px rgba(0, 230, 118, 0.2);
            --blur-amount: 20px;
        }

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

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

        body {
            font-family: '"PingFang SC"', '"Microsoft YaHei"', '"Inter"', '"SF Pro Display"', system-ui, sans-serif;
            font-size: 15px;
            line-height: 1.6;
            font-weight: 400;
            color: var(--text-primary);
            background: var(--bg-deep);
            background-image: linear-gradient(180deg, #0A1628 0%, #050D17 100%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            opacity: 0.7;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        /* 玻璃拟态卡片 */
        .glass-card {
            background: var(--card-bg);
            backdrop-filter: blur(var(--blur-amount));
            -webkit-backdrop-filter: blur(var(--blur-amount));
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            z-index: 1;
        }
        .glass-card::before {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: inherit;
            padding: 1px;
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.3), transparent 40%, transparent 60%, rgba(0, 230, 118, 0.15));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            z-index: -1;
            opacity: 0.6;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow), 0 16px 48px rgba(0, 0, 0, 0.5);
            border-color: rgba(0, 230, 118, 0.55);
        }
        .glass-card:hover::before {
            opacity: 1;
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.5), transparent 35%, transparent 65%, rgba(0, 230, 118, 0.3));
        }

        /* 发光按钮 */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            background: linear-gradient(135deg, #00E676, #00C853);
            color: #0A1628;
            font-weight: 700;
            font-size: 15px;
            border: none;
            border-radius: var(--radius-full);
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 230, 118, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
            letter-spacing: 0.02em;
            position: relative;
            overflow: hidden;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-glow:hover {
            box-shadow: 0 0 36px rgba(0, 230, 118, 0.75), 0 8px 28px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.4);
            filter: brightness(1.15);
            transform: translateY(-1px);
        }
        .btn-glow:active {
            transform: translateY(0);
            filter: brightness(1);
            box-shadow: 0 0 16px rgba(0, 230, 118, 0.4);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            background: transparent;
            color: #00E676;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid #00E676;
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: all 0.3s ease;
            letter-spacing: 0.02em;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: #00E676;
            box-shadow: 0 0 20px rgba(0, 230, 118, 0.25);
        }

        /* 导航栏 */
        #nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 12px 0;
            transition: all 0.4s ease;
        }
        #nav.scrolled {
            background: rgba(10, 22, 40, 0.88);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
            border-bottom: 1px solid rgba(0, 230, 118, 0.12);
        }
        .nav-capsule {
            max-width: 1200px;
            margin: 0 auto;
            padding: 10px 28px;
            background: rgba(20, 41, 77, 0.5);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: 40px;
            border: 1px solid rgba(0, 230, 118, 0.2);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: all 0.4s ease;
        }
        #nav.scrolled .nav-capsule {
            background: rgba(20, 41, 77, 0.7);
            border-color: rgba(0, 230, 118, 0.35);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 20px;
            color: #00E676;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .nav-logo .logo-icon {
            font-size: 22px;
            animation: logo-pulse 2s ease-in-out infinite;
        }
        @keyframes logo-pulse {
            0%,
            100% {
                text-shadow: 0 0 8px rgba(0, 230, 118, 0.5);
            }
            50% {
                text-shadow: 0 0 22px rgba(0, 230, 118, 0.9);
            }
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: #C8D6E5;
            font-size: 14px;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color 0.25s ease;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #00E676;
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 230, 118, 0.6);
            transition: width 0.3s ease;
        }
        .nav-links a:hover {
            color: #00E676;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #00E676;
        }
        .nav-links a.active::after {
            width: 100%;
        }

        /* 移动端底部导航 */
        .mobile-bottom-nav {
            display: none;
        }
        .mobile-menu-overlay {
            display: none;
        }

        /* Hero区域 */
        #hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 100px;
            padding-bottom: 60px;
            z-index: 1;
            overflow: hidden;
        }
        #hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -15%;
            width: 70%;
            height: 90%;
            background: radial-gradient(ellipse at center, rgba(0, 230, 118, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: -1;
            animation: hero-orb-breathe 8s ease-in-out infinite;
        }
        @keyframes hero-orb-breathe {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.7;
            }
            50% {
                transform: scale(1.15);
                opacity: 1;
            }
        }
        #hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            left: -10%;
            width: 50%;
            height: 50%;
            background: radial-gradient(ellipse at center, rgba(0, 230, 118, 0.04) 0%, transparent 70%);
            pointer-events: none;
            z-index: -1;
            animation: hero-orb-breathe 10s ease-in-out infinite 3s;
        }
        .hero-particle {
            position: absolute;
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
            animation: float-up 6s ease-in-out infinite;
        }
        @keyframes float-up {
            0% {
                transform: translateY(0) translateX(0) scale(1);
                opacity: 0;
            }
            20% {
                opacity: 0.9;
            }
            80% {
                opacity: 0.5;
            }
            100% {
                transform: translateY(-400px) translateX(60px) scale(0.3);
                opacity: 0;
            }
        }
        .hero-data-panel {
            background: rgba(20, 41, 77, 0.6);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-radius: 20px;
            border: 1px solid rgba(0, 230, 118, 0.3);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 230, 118, 0.08);
            position: relative;
            overflow: hidden;
            transform: perspective(800px) rotateY(-2deg) rotateX(1deg);
            transition: transform 0.5s ease;
        }
        .hero-data-panel:hover {
            transform: perspective(800px) rotateY(0deg) rotateX(0deg);
            box-shadow: 0 24px 72px rgba(0, 0, 0, 0.6), 0 0 56px rgba(0, 230, 118, 0.15);
        }
        .hero-data-panel img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 20px;
            opacity: 0.85;
            mix-blend-mode: screen;
        }
        .hero-data-panel .data-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 22, 40, 0.3) 0%, rgba(10, 22, 40, 0.6) 100%);
            border-radius: 20px;
            pointer-events: none;
        }
        .hero-glow-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #00E676;
            box-shadow: 0 0 12px rgba(0, 230, 118, 0.8), 0 0 24px rgba(0, 230, 118, 0.4);
            margin-right: 6px;
            animation: dot-pulse 2s ease-in-out infinite;
        }
        @keyframes dot-pulse {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 230, 118, 0.8), 0 0 24px rgba(0, 230, 118, 0.4);
            }
            50% {
                box-shadow: 0 0 20px rgba(0, 230, 118, 1), 0 0 40px rgba(0, 230, 118, 0.7);
            }
        }

        /* 功能图标容器 */
        .feature-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 230, 118, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            transition: all 0.35s ease;
            flex-shrink: 0;
        }
        .glass-card:hover .feature-icon-wrap {
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.3), rgba(0, 200, 83, 0.2));
            box-shadow: 0 0 20px rgba(0, 230, 118, 0.25);
        }

        /* 价格推荐卡 */
        .pricing-recommended {
            border-color: rgba(255, 109, 0, 0.5) !important;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 36px rgba(255, 109, 0, 0.2) !important;
            position: relative;
            transform: translateY(-8px);
        }
        .pricing-recommended::after {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 19px;
            background: linear-gradient(135deg, rgba(255, 109, 0, 0.5), rgba(0, 230, 118, 0.3), rgba(255, 109, 0, 0.5));
            z-index: -2;
            animation: ring-glow 3s ease-in-out infinite;
            pointer-events: none;
        }
        @keyframes ring-glow {
            0%,
            100% {
                opacity: 0.5;
            }
            50% {
                opacity: 1;
            }
        }
        .pricing-badge {
            display: inline-block;
            padding: 5px 14px;
            background: #FF6D00;
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        /* FAQ手风琴 */
        .faq-item {
            border-radius: 14px;
            background: rgba(20, 41, 77, 0.4);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 230, 118, 0.15);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .faq-item:hover {
            border-color: rgba(0, 230, 118, 0.35);
        }
        .faq-item.open {
            border-color: rgba(0, 230, 118, 0.5);
            box-shadow: 0 0 20px rgba(0, 230, 118, 0.08);
        }
        .faq-question {
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 15px;
            color: #fff;
            user-select: none;
        }
        .faq-question .faq-icon {
            font-size: 20px;
            color: #00E676;
            transition: transform 0.35s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: #C8D6E5;
            font-size: 14px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px 22px;
        }

        /* 分隔线 */
        .section-divider {
            width: 100%;
            height: 1px;
            background: rgba(0, 230, 118, 0.15);
            box-shadow: 0 0 6px rgba(0, 230, 118, 0.08);
            margin: 0 auto;
            max-width: 900px;
        }

        /* 案例数据数字 */
        .case-number {
            font-size: 56px;
            font-weight: 800;
            color: #00E676;
            text-shadow: 0 0 30px rgba(0, 230, 118, 0.5);
            line-height: 1;
            font-family: '"Inter"', '"SF Pro Display"', system-ui, sans-serif;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            #hero {
                min-height: auto;
                padding-top: 120px;
                padding-bottom: 50px;
            }
            .hero-data-panel {
                transform: none;
                margin-top: 28px;
            }
            .case-number {
                font-size: 42px;
            }
            .nav-links {
                gap: 18px;
            }
            .nav-links a {
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-capsule .btn-glow.desktop-only {
                display: none;
            }
            .nav-capsule {
                padding: 10px 20px;
                border-radius: 32px;
            }
            .mobile-bottom-nav {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                width: 100%;
                z-index: 1001;
                background: rgba(10, 22, 40, 0.92);
                backdrop-filter: blur(28px);
                -webkit-backdrop-filter: blur(28px);
                border-top: 1px solid rgba(0, 230, 118, 0.2);
                justify-content: space-around;
                align-items: center;
                padding: 8px 0 12px 0;
                box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.5);
            }
            .mobile-bottom-nav a {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 4px;
                color: #8395B7;
                font-size: 10px;
                font-weight: 500;
                transition: color 0.25s ease;
                text-decoration: none;
            }
            .mobile-bottom-nav a .mb-icon {
                font-size: 20px;
                transition: all 0.25s ease;
            }
            .mobile-bottom-nav a.active {
                color: #00E676;
            }
            .mobile-bottom-nav a.active .mb-icon {
                text-shadow: 0 0 10px rgba(0, 230, 118, 0.6);
            }
            body {
                padding-bottom: 80px;
            }
            #hero {
                padding-top: 100px;
                text-align: center;
            }
            #hero h1 {
                font-size: 26px !important;
            }
            h2 {
                font-size: 20px !important;
            }
            .pricing-recommended {
                transform: translateY(0);
            }
            .case-number {
                font-size: 36px;
            }
            .glass-card:hover {
                transform: translateY(-2px);
            }
            .mobile-menu-overlay {
                display: none;
                position: fixed;
                inset: 0;
                z-index: 999;
                background: rgba(10, 22, 40, 0.95);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 28px;
            }
            .mobile-menu-overlay.show {
                display: flex;
            }
            .mobile-menu-overlay a {
                font-size: 18px;
                color: #C8D6E5;
                font-weight: 600;
                transition: color 0.25s ease;
            }
            .mobile-menu-overlay a:hover {
                color: #00E676;
            }
            .mobile-menu-close {
                position: absolute;
                top: 24px;
                right: 24px;
                font-size: 28px;
                color: #fff;
                cursor: pointer;
                z-index: 1000;
                background: none;
                border: none;
            }
            .hamburger-btn {
                display: flex !important;
                background: none;
                border: none;
                color: #fff;
                font-size: 24px;
                cursor: pointer;
                padding: 4px 8px;
            }
        }
        @media (min-width: 769px) {
            .hamburger-btn {
                display: none !important;
            }
            .mobile-bottom-nav {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            #hero h1 {
                font-size: 22px !important;
            }
            h2 {
                font-size: 18px !important;
            }
            .btn-glow {
                padding: 12px 24px;
                font-size: 14px;
            }
            .btn-outline {
                padding: 11px 22px;
                font-size: 14px;
            }
            .case-number {
                font-size: 30px;
            }
            .glass-card {
                border-radius: 12px;
            }
            .pricing-recommended::after {
                border-radius: 15px;
            }
        }