/* roulang page: index */
:root {
            --color-primary: #C8FF00;
            --color-primary-hover: #B3E600;
            --color-accent: #FF4D2E;
            --color-bg: #F5F3EF;
            --color-dark: #1A1A1A;
            --color-dark-secondary: #2C2C2C;
            --color-text: #3A3A3A;
            --color-heading: #0D0D0D;
            --color-subtext: #7A7A7A;
            --color-white: #FFFFFF;
            --color-border: #E8E5DF;
            --color-border-light: #D5D0C8;
            --color-footer-text: #B0B0B0;
            --color-footer-border: #333333;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 30px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.10);
            --shadow-glow: 0 8px 20px rgba(200, 255, 0, 0.35);
            --shadow-nav: 0 1px 0 rgba(0, 0, 0, 0.06);
            --font-heading-heavy: 'PingFang SC Heavy', 'Noto Sans SC Bold', 'Microsoft YaHei Bold', sans-serif;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC Regular', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --font-data: 'Inter', 'Roboto', sans-serif;
            --font-mono: 'JetBrains Mono', 'Consolas', monospace;
            --transition-fast: 0.2s ease;
            --transition-medium: 0.3s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-padding: 80px;
            --section-padding-mobile: 48px;
            --nav-height: 72px;
        }

        *,
        *::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-body);
            font-weight: 400;
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-heading);
            font-family: var(--font-heading);
            line-height: 1.25;
        }

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

        /* 导航 */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: background-color var(--transition-medium), box-shadow var(--transition-medium);
            background-color: transparent;
        }

        .nav.scrolled {
            background-color: var(--color-white);
            box-shadow: var(--shadow-nav);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading-heavy);
            font-weight: 800;
            font-size: 22px;
            color: var(--color-white);
            transition: color var(--transition-medium);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .nav.scrolled .nav-logo {
            color: var(--color-heading);
        }

        .nav-logo-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .nav-logo-icon svg {
            width: 100%;
            height: 100%;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.9);
            transition: background-color var(--transition-fast), color var(--transition-medium);
            white-space: nowrap;
        }

        .nav.scrolled .nav-links a {
            color: var(--color-heading);
        }

        .nav-links a:hover,
        .nav-links a:focus-visible {
            background-color: rgba(200, 255, 0, 0.12);
            color: var(--color-primary);
        }

        .nav.scrolled .nav-links a:hover,
        .nav.scrolled .nav-links a:focus-visible {
            color: #5c7a00;
            background-color: rgba(200, 255, 0, 0.18);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            background-color: var(--color-primary);
            color: var(--color-dark) !important;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 14px;
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.3px;
        }

        .nav-cta:hover {
            background-color: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: var(--color-dark) !important;
        }

        .nav.scrolled .nav-cta {
            color: var(--color-dark) !important;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            background: none;
            border: none;
        }

        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background-color: var(--color-white);
            border-radius: 2px;
            transition: all var(--transition-medium);
        }

        .nav.scrolled .nav-hamburger span {
            background-color: var(--color-heading);
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            width: 100vw;
            height: 100vh;
            background-color: var(--color-dark);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            transform: translateX(100%);
            transition: transform var(--transition-slow);
            will-change: transform;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .mobile-drawer a {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            padding: 12px 24px;
            border-radius: 24px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }

        .mobile-drawer a:hover,
        .mobile-drawer a:focus-visible {
            color: var(--color-primary);
            background-color: rgba(200, 255, 0, 0.08);
        }

        .mobile-drawer-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--color-white);
            cursor: pointer;
            background: none;
            border: none;
            border-radius: 50%;
            transition: background-color var(--transition-fast);
        }

        .mobile-drawer-close:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .mobile-drawer-cta {
            display: inline-flex;
            align-items: center;
            padding: 14px 32px;
            background-color: var(--color-primary);
            color: var(--color-dark) !important;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 16px;
            margin-top: 8px;
            transition: background-color var(--transition-fast), transform var(--transition-fast);
        }

        .mobile-drawer-cta:hover {
            background-color: var(--color-primary-hover);
            transform: translateY(-2px);
        }

        /* Hero */
        .hero {
            min-height: 85vh;
            min-height: max(85vh, 640px);
            display: flex;
            align-items: center;
            background: linear-gradient(180deg, #1A1A1A 0%, #2C2C2C 60%, #1E1E1E 100%);
            position: relative;
            overflow: hidden;
            padding-top: var(--nav-height);
        }

        .hero-glow {
            position: absolute;
            top: 10%;
            right: -5%;
            width: 55%;
            height: 70%;
            background: radial-gradient(ellipse at center, rgba(200, 255, 0, 0.13) 0%, rgba(200, 255, 0, 0.03) 40%, transparent 70%);
            pointer-events: none;
            z-index: 1;
        }

        .hero-glow-secondary {
            position: absolute;
            bottom: 5%;
            left: -8%;
            width: 40%;
            height: 50%;
            background: radial-gradient(ellipse at center, rgba(255, 77, 46, 0.06) 0%, transparent 65%);
            pointer-events: none;
            z-index: 1;
        }

        .hero-bg-img {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 48%;
            height: 75%;
            object-fit: cover;
            object-position: center left;
            border-radius: 12px 0 0 12px;
            opacity: 0.55;
            z-index: 0;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.35) 60%, transparent 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.35) 60%, transparent 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 620px;
            padding: 60px 0;
        }

        .hero h1 {
            font-family: var(--font-heading-heavy);
            font-weight: 800;
            font-size: 56px;
            line-height: 1.1;
            color: var(--color-white);
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease forwards;
        }

        .hero h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 36px;
            max-width: 480px;
            animation: fadeInUp 0.6s ease 0.15s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            animation: fadeInUp 0.6s ease 0.3s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-scroll-hint {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            animation: pulseDown 2s ease-in-out infinite;
        }

        .hero-scroll-hint span {
            display: block;
            width: 10px;
            height: 10px;
            border-right: 2px solid rgba(200, 255, 0, 0.7);
            border-bottom: 2px solid rgba(200, 255, 0, 0.7);
            transform: rotate(45deg);
            animation: pulseArrow 2s ease-in-out infinite;
        }

        .hero-scroll-hint span:nth-child(2) {
            animation-delay: 0.3s;
            opacity: 0.6;
        }

        @keyframes pulseDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(8px);
            }
        }

        @keyframes pulseArrow {
            0%,
            100% {
                opacity: 0.9;
            }
            50% {
                opacity: 0.3;
            }
        }

        /* 按钮系统 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background-color: var(--color-primary);
            color: var(--color-dark);
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-full);
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
            border: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .btn-primary:hover,
        .btn-primary:focus-visible {
            background-color: var(--color-primary-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
            outline: none;
        }

        .btn-primary:active {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(200, 255, 0, 0.25);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background-color: transparent;
            color: var(--color-white);
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-full);
            border: 2px solid var(--color-primary);
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
            cursor: pointer;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            background-color: var(--color-primary);
            color: var(--color-dark);
            transform: translateY(-3px);
            outline: none;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 220px;
            padding: 16px 36px;
            background-color: var(--color-primary);
            color: var(--color-dark);
            font-weight: 700;
            font-size: 18px;
            border-radius: var(--radius-full);
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
            border: none;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .btn-cta:hover,
        .btn-cta:focus-visible {
            background-color: var(--color-primary-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
            outline: none;
        }

        .btn-cta:active {
            transform: translateY(-1px);
        }

        /* 区块通用 */
        .section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header h2 {
            font-family: var(--font-heading-heavy);
            font-weight: 700;
            font-size: 40px;
            line-height: 1.25;
            color: var(--color-heading);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 18px;
            color: var(--color-subtext);
            max-width: 550px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* 核心优势 - 区块02 */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .advantage-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            text-align: center;
            transition: transform var(--transition-medium), box-shadow var(--transition-medium);
            position: relative;
            cursor: default;
        }

        .advantage-card:nth-child(2) {
            transform: translateY(-10px);
            border-color: rgba(200, 255, 0, 0.25);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
        }

        .advantage-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }

        .advantage-card:nth-child(2):hover {
            transform: translateY(-16px);
            box-shadow: var(--shadow-card-hover);
        }

        .advantage-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .advantage-icon svg {
            width: 48px;
            height: 48px;
        }

        .advantage-card h3 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 24px;
            line-height: 1.35;
            color: var(--color-heading);
            margin-bottom: 10px;
        }

        .advantage-card p {
            font-size: 15px;
            color: var(--color-subtext);
            line-height: 1.55;
        }

        /* 功能分组 - 区块03 */
        .feature-row {
            display: flex;
            align-items: center;
            gap: 60px;
            margin-bottom: 72px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-row.reverse {
            flex-direction: row-reverse;
        }

        .feature-image {
            flex: 0 0 48%;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
        }

        .feature-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: var(--radius-md);
            transition: transform 0.5s ease;
        }

        .feature-image:hover img {
            transform: scale(1.03);
        }

        .feature-text {
            flex: 1;
        }

        .feature-text h3 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 28px;
            color: var(--color-heading);
            margin-bottom: 14px;
            letter-spacing: -0.2px;
        }

        .feature-text p {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
        }

        .feature-list li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 8px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.6;
        }

        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: #7a9e00;
            font-weight: 700;
            font-size: 15px;
        }

        /* 场景卡片 - 区块04 */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scene-card {
            height: 420px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            cursor: pointer;
            background-size: cover;
            background-position: center;
            transition: transform var(--transition-medium);
        }

        .scene-card:hover {
            transform: scale(1.04);
        }

        .scene-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.25) 45%, rgba(26, 26, 26, 0.05) 100%);
            border-radius: var(--radius-lg);
            transition: background var(--transition-medium);
        }

        .scene-card:hover .scene-card-overlay {
            background: linear-gradient(to top, rgba(26, 26, 26, 0.92) 0%, rgba(26, 26, 26, 0.4) 50%, rgba(26, 26, 26, 0.08) 100%);
        }

        .scene-card-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 28px 24px;
            z-index: 1;
        }

        .scene-card-tag {
            display: inline-block;
            padding: 5px 14px;
            background-color: rgba(200, 255, 0, 0.2);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .scene-card h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-white);
            margin-bottom: 4px;
        }

        .scene-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.5;
        }

        /* 成功案例 - 区块05 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }

        .case-card {
            background: #f7f5f1;
            border-radius: var(--radius-sm);
            padding: 28px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .case-card:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-card);
        }

        .case-avatar {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            object-fit: cover;
            background-color: #e8e5df;
        }

        .case-info h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 17px;
            color: var(--color-heading);
            margin-bottom: 2px;
        }

        .case-tag {
            display: inline-block;
            font-size: 13px;
            color: var(--color-subtext);
            margin-bottom: 8px;
        }

        .case-quote {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.55;
            font-style: italic;
        }

        /* 价格方案 - 区块06 */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 1080px;
            margin: 0 auto;
            align-items: stretch;
        }

        .price-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: center;
            position: relative;
            transition: transform var(--transition-medium), box-shadow var(--transition-medium);
            display: flex;
            flex-direction: column;
        }

        .price-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .price-card.featured {
            border: 2px solid var(--color-primary);
            box-shadow: 0 4px 20px rgba(200, 255, 0, 0.1);
            transform: translateY(-8px);
        }

        .price-card.featured:hover {
            transform: translateY(-14px);
            box-shadow: 0 16px 36px rgba(200, 255, 0, 0.18);
        }

        .price-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--color-accent);
            color: var(--color-white);
            font-weight: 700;
            font-size: 13px;
            padding: 6px 18px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .price-name {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-heading);
            margin-bottom: 16px;
        }

        .price-amount {
            font-family: var(--font-data);
            font-weight: 700;
            font-size: 44px;
            color: var(--color-heading);
            margin-bottom: 6px;
            letter-spacing: -1px;
        }

        .price-amount span {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-subtext);
        }

        .price-period {
            font-size: 14px;
            color: var(--color-subtext);
            margin-bottom: 24px;
        }

        .price-features {
            list-style: none;
            padding: 0;
            margin-bottom: 28px;
            text-align: left;
            flex: 1;
        }

        .price-features li {
            padding: 7px 0;
            font-size: 14px;
            color: var(--color-text);
            border-bottom: 1px solid #f0ede8;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-features li::before {
            content: '✓';
            color: #7a9e00;
            font-weight: 700;
            flex-shrink: 0;
            font-size: 13px;
        }

        .price-features li.disabled {
            color: #c0c0c0;
        }

        .price-features li.disabled::before {
            content: '—';
            color: #c0c0c0;
            font-weight: 400;
        }

        .price-card .btn-primary {
            width: 100%;
            margin-top: auto;
        }

        /* FAQ - 区块07 */
        .faq-container {
            max-width: 780px;
            margin: 0 auto;
        }

        .accordion-item {
            border-bottom: 1px solid var(--color-border);
        }

        .accordion-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            cursor: pointer;
            user-select: none;
            transition: background-color var(--transition-fast);
            gap: 16px;
        }

        .accordion-header:hover {
            background-color: rgba(200, 255, 0, 0.04);
            padding-left: 8px;
            padding-right: 8px;
            border-radius: 4px;
            margin: 0 -8px;
        }

        .accordion-header h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 17px;
            color: var(--color-heading);
            flex: 1;
            line-height: 1.4;
        }

        .accordion-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #7a9e00;
            transition: transform var(--transition-slow);
            border-radius: 50%;
            background-color: rgba(200, 255, 0, 0.1);
        }

        .accordion-item.active .accordion-icon {
            transform: rotate(45deg);
            background-color: rgba(200, 255, 0, 0.2);
        }

        .accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .accordion-item.active .accordion-body {
            max-height: 300px;
            padding: 0 0 20px;
        }

        .accordion-body p {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.7;
        }

        /* CTA Banner - 区块08 */
        .cta-banner {
            background-color: var(--color-dark);
            position: relative;
            overflow: hidden;
            padding: 72px 0;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(0deg,
                    transparent,
                    transparent 40px,
                    rgba(200, 255, 0, 0.015) 40px,
                    rgba(200, 255, 0, 0.015) 41px);
            pointer-events: none;
            z-index: 0;
        }

        .cta-banner-glow {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 60%;
            height: 80%;
            background: radial-gradient(ellipse at center, rgba(200, 255, 0, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .cta-banner-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-banner h2 {
            font-family: var(--font-heading-heavy);
            font-weight: 700;
            font-size: 38px;
            color: var(--color-white);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .cta-banner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 500px;
            margin: 0 auto 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 240px;
            padding: 14px 22px;
            border-radius: var(--radius-full);
            border: 2px solid #555;
            background-color: rgba(255, 255, 255, 0.06);
            color: var(--color-white);
            font-size: 16px;
            transition: border-color var(--transition-fast);
            letter-spacing: 0.3px;
        }

        .cta-form input::placeholder {
            color: #888;
        }

        .cta-form input:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 4px rgba(200, 255, 0, 0.08);
        }

        .cta-form .btn-primary {
            flex-shrink: 0;
            border-radius: var(--radius-full);
            padding: 14px 28px;
        }

        .cta-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* 页脚 - 区块09 */
        .footer {
            background-color: var(--color-dark);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid var(--color-footer-border);
        }

        .footer-brand p {
            color: var(--color-footer-text);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 12px;
            max-width: 280px;
        }

        .footer-brand .nav-logo {
            color: var(--color-white);
        }

        .footer h5 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 16px;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer ul li {
            margin-bottom: 10px;
        }

        .footer ul li a {
            font-size: 14px;
            color: var(--color-footer-text);
            transition: color var(--transition-fast);
        }

        .footer ul li a:hover {
            color: var(--color-primary);
        }

        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .footer-social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.06);
            color: var(--color-footer-text);
            font-size: 18px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }

        .footer-social-icons a:hover {
            background-color: rgba(200, 255, 0, 0.15);
            color: var(--color-primary);
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: var(--color-footer-text);
            letter-spacing: 0.2px;
        }

        /* AOS滚动动画 */
        .aos-fade-up {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .aos-fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式 */
        @media (max-width: 1279px) {
            .container {
                max-width: 960px;
            }
            .advantages-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .feature-row {
                gap: 36px;
            }
            .feature-image img {
                height: 300px;
            }
            .pricing-grid {
                gap: 18px;
            }
            .hero h1 {
                font-size: 46px;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 1023px) {
            .container {
                max-width: 90vw;
            }
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .advantage-card:nth-child(2) {
                transform: translateY(0);
            }
            .advantage-card:nth-child(2):hover {
                transform: translateY(-6px);
            }
            .feature-row,
            .feature-row.reverse {
                flex-direction: column;
                gap: 28px;
            }
            .feature-image {
                flex: 0 0 auto;
                width: 100%;
            }
            .feature-image img {
                height: 280px;
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .scene-card {
                height: 340px;
            }
            .cases-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .price-card.featured {
                transform: translateY(0);
                order: -1;
            }
            .price-card.featured:hover {
                transform: translateY(-6px);
            }
            .hero h1 {
                font-size: 40px;
            }
            .hero-bg-img {
                width: 55%;
                opacity: 0.4;
            }
            .section-header h2 {
                font-size: 34px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .cta-banner h2 {
                font-size: 30px;
            }
        }

        @media (max-width: 767px) {
            .container {
                max-width: 94vw;
                padding: 0 16px;
            }
            .section {
                padding: var(--section-padding-mobile) 0;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                max-width: 420px;
                margin: 0 auto;
            }
            .advantage-card:nth-child(2) {
                transform: translateY(0);
            }
            .advantage-card:nth-child(2):hover {
                transform: translateY(-6px);
            }
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                max-width: 420px;
                margin: 0 auto;
            }
            .scene-card {
                height: 300px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 14px;
                max-width: 460px;
                margin: 0 auto;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                max-width: 400px;
                margin: 0 auto;
            }
            .price-card.featured {
                transform: translateY(0);
                order: -1;
            }
            .price-card.featured:hover {
                transform: translateY(-4px);
            }
            .hero {
                min-height: 90vh;
                min-height: max(90vh, 580px);
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
                margin-left: auto;
                margin-right: auto;
                max-width: 100%;
            }
            .hero-buttons {
                justify-content: center;
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                width: 100%;
                max-width: 320px;
                text-align: center;
            }
            .hero-bg-img {
                width: 100%;
                height: 55%;
                top: auto;
                bottom: 0;
                transform: none;
                border-radius: 12px 12px 0 0;
                opacity: 0.3;
                mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
                -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
            }
            .hero-glow {
                width: 80%;
                height: 50%;
                top: 20%;
                right: 10%;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .section-header p {
                font-size: 15px;
            }
            .feature-text h3 {
                font-size: 22px;
            }
            .cta-banner h2 {
                font-size: 26px;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                min-width: auto;
                max-width: 400px;
            }
            .cta-form .btn-primary {
                width: 100%;
                max-width: 400px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .accordion-header h4 {
                font-size: 15px;
            }
            .btn-cta {
                min-width: auto;
                width: 100%;
                max-width: 320px;
            }
            .price-amount {
                font-size: 36px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo-icon {
                width: 30px;
                height: 30px;
            }
        }

        @media (max-width: 479px) {
            .section {
                padding: 36px 0;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                font-size: 14px;
                padding: 12px 24px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .feature-image img {
                height: 220px;
            }
            .scene-card {
                height: 260px;
            }
            .case-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 20px;
            }
            .price-card {
                padding: 24px 18px;
            }
            .price-name {
                font-size: 18px;
            }
            .cta-banner {
                padding: 48px 0;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
            .btn-cta {
                font-size: 16px;
                padding: 14px 24px;
                min-width: auto;
            }
            .accordion-header {
                padding: 16px 0;
            }
            .accordion-header h4 {
                font-size: 14px;
            }
            .footer {
                padding: 40px 0 0;
            }
            .nav {
                height: 60px;
            }
            :root {
                --nav-height: 60px;
            }
        }