/* ========== 基础重置 ========== */
        *, *::before, *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary: #FF6B35;
            --primary-light: #FF8C42;
            --primary-dark: #E55A2B;
            --primary-gradient: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
            --text-primary: #1A1A2E;
            --text-secondary: #5A5A7A;
            --text-muted: #9A9AB0;
            --bg-white: #FFFFFF;
            --bg-light: #F8F9FC;
            --bg-gray: #F0F2F8;
            --border: #E8EAF0;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 20px 60px rgba(26, 26, 46, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            color: var(--text-primary);
            background: var(--bg-white);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul, ol {
            list-style: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 100px 0;
        }

        .section-label {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .text-center {
            text-align: center;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 20px rgba(255, 107, 53, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 107, 53, 0.45);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-lg {
            padding: 18px 40px;
            font-size: 18px;
        }

        /* ========== 导航栏 ========== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 20px 0;
            transition: var(--transition);
            background: transparent;
        }

        .navbar.scrolled {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: var(--shadow-sm);
            padding: 14px 0;
        }

        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 0;
            cursor: pointer;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 10px;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
        }

        .mobile-menu-btn span {
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
            display: block;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-download-btn {
            display: none;
        }

        /* ========== Hero 区 ========== */
        .hero {
            position: relative;
            padding: 160px 0 100px;
            background: var(--bg-light);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -300px;
            left: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 140, 66, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -1px;
            margin-bottom: 24px;
        }

        .hero-content h1 .highlight {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 20px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .trust-item .check {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: bold;
        }

        /* 手机展示 */
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
        }

        .phone-mockup {
            width: 300px;
            height: 600px;
            background: var(--text-primary);
            border-radius: 44px;
            padding: 12px;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .phone-screen {
            width: 100%;
            height: 100%;
            background: var(--bg-white);
            border-radius: 34px;
            overflow: hidden;
            position: relative;
        }

        .phone-notch {
            position: absolute;
            top: 12px;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 28px;
            background: var(--text-primary);
            border-radius: 0 0 18px 18px;
            z-index: 2;
        }

        .app-header {
            background: var(--primary-gradient);
            padding: 50px 20px 30px;
            color: #fff;
        }

        .app-header .balance-label {
            font-size: 12px;
            opacity: 0.9;
            margin-bottom: 4px;
        }

        .app-header .balance {
            font-size: 32px;
            font-weight: 800;
        }

        .app-body {
            padding: 16px;
        }

        .task-card {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .task-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .task-info {
            flex: 1;
            min-width: 0;
        }

        .task-title {
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .task-desc {
            font-size: 11px;
            color: var(--text-muted);
        }

        .task-reward {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }

        .floating-card {
            position: absolute;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 14px 18px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 10px;
            animation: float 3s ease-in-out infinite;
        }

        .floating-card.card-1 {
            top: 80px;
            left: -30px;
            animation-delay: 0s;
        }

        .floating-card.card-2 {
            bottom: 120px;
            right: -20px;
            animation-delay: 1.5s;
        }

        .floating-card .icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .floating-card .icon.green {
            background: rgba(34, 197, 94, 0.12);
        }

        .floating-card .icon.orange {
            background: rgba(255, 107, 53, 0.12);
        }

        .floating-card .text {
            font-size: 13px;
        }

        .floating-card .text strong {
            display: block;
            font-size: 15px;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        /* ========== 数据统计 ========== */
        .stats {
            padding: 60px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stat-item .number {
            font-size: 48px;
            font-weight: 900;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-item .label {
            font-size: 15px;
            color: var(--text-secondary);
        }

        /* ========== 功能特色 ========== */
        .features {
            background: var(--bg-white);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 60px;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary-gradient);
            transform: scaleX(0);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(255, 107, 53, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: 24px;
        }

        .feature-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== 使用流程 ========== */
        .how-it-works {
            background: var(--bg-light);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-top: 60px;
            position: relative;
        }

        .steps::before {
            content: '';
            position: absolute;
            top: 50px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: dashed var(--border);
            z-index: 0;
        }

        .step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 36px;
            font-weight: 900;
            color: var(--primary);
            margin: 0 auto 24px;
            box-shadow: var(--shadow-sm);
        }

        .step h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 280px;
            margin: 0 auto;
        }

        /* ========== 任务类型 ========== */
        .task-types {
            background: var(--bg-white);
        }

        .task-types-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .task-type-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .task-type-card:hover {
            background: var(--primary-gradient);
            transform: translateY(-4px);
        }

        .task-type-card:hover .task-type-icon,
        .task-type-card:hover h4,
        .task-type-card:hover p {
            color: #fff;
        }

        .task-type-icon {
            font-size: 40px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .task-type-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            transition: var(--transition);
        }

        .task-type-card p {
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        /* ========== 用户评价 ========== */
        .testimonials {
            background: var(--bg-light);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 60px;
        }

        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .testimonial-stars {
            color: #FFB800;
            font-size: 16px;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }

        .testimonial-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
        }

        .author-info .name {
            font-size: 15px;
            font-weight: 600;
        }

        .author-info .role {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq {
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 800px;
            margin: 60px auto 0;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
        }

        .faq-question {
            width: 100%;
            padding: 22px 28px;
            background: none;
            border: none;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: var(--text-primary);
        }

        .faq-question .arrow {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .arrow {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 28px 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== CTA 下载区 ========== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: -100px;
            width: 350px;
            height: 350px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 42px;
            font-weight: 900;
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 18px;
            opacity: 0.9;
            margin-bottom: 36px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }

        .btn-white-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
        }

        /* ========== APP 界面预览 ========== */
        .app-preview {
            background: var(--bg-light);
        }

        .preview-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 60px;
        }

        .preview-phone {
            text-align: center;
        }

        .preview-frame {
            width: 100%;
            max-width: 240px;
            aspect-ratio: 9 / 19;
            background: var(--text-primary);
            border-radius: 36px;
            padding: 10px;
            margin: 0 auto 16px;
            box-shadow: var(--shadow-md);
            position: relative;
            transition: var(--transition);
        }

        .preview-phone:hover .preview-frame {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .preview-notch {
            position: absolute;
            top: 10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 22px;
            background: var(--text-primary);
            border-radius: 0 0 14px 14px;
            z-index: 5;
        }

        .preview-screen {
            width: 100%;
            height: 100%;
            background: var(--bg-white);
            border-radius: 28px;
            overflow: hidden;
            position: relative;
            padding: 36px 14px 14px;
        }

        .preview-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
        }

        /* 首页屏幕 */
        .screen-home .ps-topbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 14px;
        }

        .screen-home .ps-greeting {
            font-size: 13px;
            font-weight: 600;
        }

        .screen-home .ps-avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }

        .screen-home .ps-banner {
            background: var(--primary-gradient);
            border-radius: 12px;
            padding: 14px;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
        }

        .screen-home .ps-banner-title {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 2px;
        }

        .screen-home .ps-banner-sub {
            font-size: 11px;
            opacity: 0.9;
        }

        .screen-home .ps-banner-tag {
            position: absolute;
            top: 10px;
            right: 10px;
            background: rgba(255,255,255,0.25);
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 10px;
            font-weight: 600;
        }

        .screen-home .ps-quick {
            display: flex;
            justify-content: space-around;
            margin-bottom: 14px;
        }

        .screen-home .ps-quick-item {
            font-size: 11px;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
        }

        .screen-home .ps-q-icon {
            font-size: 18px;
        }

        .screen-home .ps-section-title {
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .screen-home .ps-task-row {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px;
            background: var(--bg-light);
            border-radius: 10px;
            margin-bottom: 8px;
        }

        .screen-home .ps-task-ic {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .screen-home .ps-task-info {
            flex: 1;
            min-width: 0;
        }

        .screen-home .ps-task-name {
            font-size: 11px;
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .screen-home .ps-task-meta {
            font-size: 9px;
            color: var(--text-muted);
        }

        .screen-home .ps-task-price {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }

        /* 任务详情屏幕 */
        .screen-detail .sd-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }

        .screen-detail .sd-back,
        .screen-detail .sd-share {
            font-size: 18px;
            color: var(--text-secondary);
            width: 24px;
        }

        .screen-detail .sd-title {
            font-size: 14px;
            font-weight: 700;
        }

        .screen-detail .sd-reward-box {
            background: var(--primary-gradient);
            border-radius: 12px;
            padding: 14px;
            color: #fff;
            text-align: center;
            margin-bottom: 12px;
        }

        .screen-detail .sd-reward-label {
            font-size: 11px;
            opacity: 0.9;
        }

        .screen-detail .sd-reward-num {
            font-size: 26px;
            font-weight: 900;
            margin: 2px 0;
        }

        .screen-detail .sd-reward-tag {
            font-size: 10px;
            background: rgba(255,255,255,0.2);
            display: inline-block;
            padding: 2px 8px;
            border-radius: 10px;
        }

        .screen-detail .sd-info-card {
            background: var(--bg-light);
            border-radius: 10px;
            padding: 10px 12px;
            margin-bottom: 12px;
        }

        .screen-detail .sd-info-row {
            display: flex;
            justify-content: space-between;
            font-size: 11px;
            padding: 4px 0;
        }

        .screen-detail .sd-info-label {
            color: var(--text-muted);
        }

        .screen-detail .sd-info-val {
            font-weight: 600;
        }

        .screen-detail .sd-steps {
            margin-bottom: 12px;
        }

        .screen-detail .sd-step-title {
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .screen-detail .sd-step-item {
            font-size: 11px;
            color: var(--text-secondary);
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .screen-detail .sd-step-num {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .screen-detail .sd-btn {
            background: var(--primary-gradient);
            color: #fff;
            text-align: center;
            padding: 10px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
        }

        /* 我的页面屏幕 */
        .screen-mine .mine-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .screen-mine .mine-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
        }

        .screen-mine .mine-info {
            flex: 1;
        }

        .screen-mine .mine-name {
            font-size: 14px;
            font-weight: 700;
        }

        .screen-mine .mine-id {
            font-size: 10px;
            color: var(--text-muted);
        }

        .screen-mine .mine-setting {
            font-size: 18px;
            color: var(--text-muted);
        }

        .screen-mine .mine-balance-card {
            background: var(--primary-gradient);
            border-radius: 12px;
            padding: 14px;
            color: #fff;
            margin-bottom: 14px;
        }

        .screen-mine .mine-balance-label {
            font-size: 11px;
            opacity: 0.9;
        }

        .screen-mine .mine-balance-num {
            font-size: 24px;
            font-weight: 900;
            margin: 2px 0 10px;
        }

        .screen-mine .mine-balance-row {
            display: flex;
            align-items: center;
        }

        .screen-mine .mine-b-item {
            flex: 1;
            text-align: center;
        }

        .screen-mine .mine-b-num {
            font-size: 15px;
            font-weight: 700;
        }

        .screen-mine .mine-b-lbl {
            font-size: 10px;
            opacity: 0.85;
        }

        .screen-mine .mine-b-divider {
            width: 1px;
            height: 24px;
            background: rgba(255,255,255,0.3);
        }

        .screen-mine .mine-menu {
            background: var(--bg-light);
            border-radius: 10px;
            margin-bottom: 14px;
        }

        .screen-mine .mine-menu-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 12px;
            font-size: 12px;
            border-bottom: 1px solid var(--border);
        }

        .screen-mine .mine-menu-item:last-child {
            border-bottom: none;
        }

        .screen-mine .mine-arrow {
            color: var(--text-muted);
        }

        .screen-mine .mine-withdraw-btn {
            background: var(--primary-gradient);
            color: #fff;
            text-align: center;
            padding: 10px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
        }

        /* 提现页面屏幕 */
        .screen-withdraw .wd-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }

        .screen-withdraw .wd-back {
            font-size: 18px;
            color: var(--text-secondary);
        }

        .screen-withdraw .wd-title {
            font-size: 14px;
            font-weight: 700;
        }

        .screen-withdraw .wd-amount-card {
            background: var(--primary-gradient);
            border-radius: 12px;
            padding: 16px;
            color: #fff;
            text-align: center;
            margin-bottom: 14px;
        }

        .screen-withdraw .wd-amount-label {
            font-size: 11px;
            opacity: 0.9;
        }

        .screen-withdraw .wd-amount-num {
            font-size: 30px;
            font-weight: 900;
            margin: 4px 0;
        }

        .screen-withdraw .wd-amount-tip {
            font-size: 10px;
            opacity: 0.85;
        }

        .screen-withdraw .wd-quick {
            margin-bottom: 14px;
        }

        .screen-withdraw .wd-quick-title {
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .screen-withdraw .wd-quick-btns {
            display: flex;
            gap: 6px;
        }

        .screen-withdraw .wd-qb {
            flex: 1;
            text-align: center;
            padding: 6px 0;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 11px;
            color: var(--text-secondary);
        }

        .screen-withdraw .wd-qb.active {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(255,107,53,0.08);
            font-weight: 600;
        }

        .screen-withdraw .wd-method {
            margin-bottom: 12px;
        }

        .screen-withdraw .wd-method-title {
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
            display: block;
        }

        .screen-withdraw .wd-method-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 10px;
            background: var(--bg-light);
            border-radius: 10px;
            margin-bottom: 6px;
        }

        .screen-withdraw .wd-method-item.active {
            border: 1px solid var(--primary);
            background: rgba(255,107,53,0.05);
        }

        .screen-withdraw .wd-m-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .screen-withdraw .wd-m-info {
            flex: 1;
        }

        .screen-withdraw .wd-m-name {
            font-size: 12px;
            font-weight: 600;
        }

        .screen-withdraw .wd-m-desc {
            font-size: 9px;
            color: var(--text-muted);
        }

        .screen-withdraw .wd-check {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
        }

        .screen-withdraw .wd-radio {
            width: 14px;
            height: 14px;
            border: 2px solid var(--border);
            border-radius: 50%;
        }

        .screen-withdraw .wd-record {
            margin-bottom: 12px;
        }

        .screen-withdraw .wd-record-title {
            font-size: 11px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-muted);
        }

        .screen-withdraw .wd-record-item {
            display: flex;
            justify-content: space-between;
            font-size: 10px;
            padding: 3px 0;
            color: var(--text-secondary);
        }

        .screen-withdraw .wd-btn {
            background: var(--primary-gradient);
            color: #fff;
            text-align: center;
            padding: 10px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--text-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        .footer-bottom-links {
            display: flex;
            gap: 24px;
        }

        .footer-bottom-links a:hover {
            color: var(--primary-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 968px) {
            .navbar {
                background: rgba(255, 255, 255, 0.95);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                box-shadow: var(--shadow-sm);
                padding: 12px 0;
            }

            .navbar .container {
                padding: 0 16px;
            }

            .logo {
                font-size: 18px;
                gap: 8px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
            }

            .nav-cta {
                gap: 8px;
            }

            .nav-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .mobile-menu-btn {
                display: flex;
                width: 38px;
                height: 38px;
                gap: 4px;
            }

            .mobile-menu-btn span {
                width: 18px;
            }

            .section {
                padding: 70px 0;
            }

            .section-title {
                font-size: 32px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 16px;
                gap: 0;
                box-shadow: 0 8px 30px rgba(0,0,0,0.08);
                border-top: 1px solid var(--border);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 14px 0;
                font-size: 16px;
                font-weight: 600;
                border-bottom: 1px solid var(--border);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .mobile-download-btn {
                display: none !important;
            }

            .menu-overlay {
                display: none !important;
            }

            .hero::before,
            .hero::after {
                display: none;
            }

            .hero {
                padding: 120px 0 70px;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 50px;
            }

            .hero-content h1 {
                font-size: 40px;
            }

            .hero-content p {
                font-size: 17px;
            }

            .hero-visual {
                order: -1;
            }

            .phone-mockup {
                width: 260px;
                height: 520px;
            }

            .floating-card {
                display: none;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

            .stat-item .number {
                font-size: 36px;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .steps {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .steps::before {
                display: none;
            }

            .task-types-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
            }

            .preview-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .preview-frame {
                max-width: 200px;
                padding: 8px;
                border-radius: 28px;
            }

            .preview-notch {
                width: 60px;
                height: 18px;
            }

            .preview-screen {
                padding: 30px 10px 10px;
                border-radius: 22px;
            }

            .preview-label {
                font-size: 13px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .cta-content h2 {
                font-size: 32px;
            }

            .cta-section::before,
            .cta-section::after {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .navbar .container {
                padding: 0 12px;
            }

            .logo {
                font-size: 16px;
                gap: 6px;
            }

            .logo-icon {
                width: 28px;
                height: 28px;
            }

            .nav-cta {
                gap: 6px;
            }

            .nav-cta .btn {
                padding: 7px 12px;
                font-size: 12px;
            }

            .mobile-menu-btn {
                width: 34px;
                height: 34px;
                gap: 3px;
            }

            .mobile-menu-btn span {
                width: 16px;
                height: 1.5px;
            }

            .hero-content h1 {
                font-size: 34px;
            }

            .hero-buttons {
                flex-direction: column;
            }

            .hero-buttons .btn {
                width: 100%;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .task-types-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .floating-card {
                display: none;
            }

            .app-preview .section-title {
                font-size: 26px;
            }

            .preview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                max-width: 280px;
                margin-left: auto;
                margin-right: auto;
            }

            .preview-frame {
                max-width: 240px;
            }
        }