/* ===== Gamma.app 风格 - 专业极简设计 ===== */

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

:root {
    /* 核心色彩系统 - 极简黑白灰 + 品牌蓝 */
    --black: #0A0A0A;
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F4F4F5;
    --gray-200: #E4E4E7;
    --gray-300: #D4D4D8;
    --gray-400: #A1A1AA;
    --gray-500: #71717A;
    --gray-600: #52525B;
    --gray-700: #3F3F46;
    --gray-800: #2A2F3C;
    --gray-900: #1F2733;

    /* 品牌色 - 单一蓝色 */
    --brand-blue: #2563EB;
    --brand-blue-light: #3B82F6;
    --brand-blue-dark: #1E40AF;

    /* 语义色彩 */
    --text-primary: #1F2A37;
    --text-secondary: #4C566A;
    --text-tertiary: var(--gray-500);
    --border: var(--gray-200);
    --border-hover: var(--gray-300);
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);

    /* 新增：多层投影系统 */
    --shadow-xs: 0 1px 2px rgba(12,14,18,0.04);
    --shadow-sm: 0 2px 4px rgba(12,14,18,0.06), 0 1px 2px rgba(12,14,18,0.04);
    --shadow-md: 0 4px 8px rgba(12,14,18,0.08), 0 2px 4px rgba(12,14,18,0.06);
    --shadow-lg: 0 12px 24px rgba(12,14,18,0.10), 0 6px 12px rgba(12,14,18,0.08);
    --shadow-xl: 0 20px 40px rgba(12,14,18,0.12), 0 10px 20px rgba(12,14,18,0.10);

    /* 新增：字体层次系统 - 更大胆的对比 */
    --font-hero: 72px;
    --font-display: 56px;
    --font-title: 48px;
    --font-heading: 32px;
    --font-subheading: 24px;
    --font-body: 16px;
    --font-small: 14px;
    --font-tiny: 12px;

    /* 新增：字重系统 */
    --font-thin: 200;
    --font-light: 300;
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;

    /* 新增：间距节奏系统 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 32px;
    --spacing-lg: 64px;
    --spacing-xl: 96px;
    --spacing-2xl: 128px;
    --spacing-3xl: 160px;
}

html {
    scroll-behavior: smooth;
    /* 防止iOS文字大小调整 */
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
    /* 防止整个页面横向滚动 */
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 防止橡皮筋效果(iOS) */
    overscroll-behavior: none;
    /* 触摸优化 */
    -webkit-tap-highlight-color: rgba(37, 99, 235, 0.1);
    /* 防止横向滚动 - 移动端只允许纵向滚动 */
    overflow-x: hidden;
}

/* 容器 - 更窄更聚焦 */
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 - 完全透明极简风格 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: transparent; /* 完全透明 */
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(12,14,18,0.05);
}

.nav-container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

/* Logo - 图标 + 文案 */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--brand-blue-light);
    letter-spacing: -0.5px;
}

.nav-logo-icon {
    height: 36px;
    width: auto;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.25));
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.15s ease;
}

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

/* 去掉下划线动画，太花哨 */
.nav-menu a::after {
    display: none;
}

/* CTA按钮 - 纯色，无渐变 */
.nav-cta {
    background: var(--brand-blue);
    color: white !important;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: background 0.15s ease;
}

.nav-cta:hover {
    background: var(--brand-blue-dark);
}

/* 语言切换 */
.lang-btn {
    background: transparent;
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.15s ease;
}

.lang-btn:hover {
    background: var(--gray-50);
    border-color: var(--border-hover);
}

/* 移动端菜单按钮 - 已删除 */

/* ===== Hero 区域 ===== */
.hero {
    margin-top: 64px;
    padding: 160px 0 200px;
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    position: relative;
    display: grid;
    grid-template-columns: 500px 1fr;
    gap: 80px;
    align-items: center;
    min-height: 600px;
}

/* 文案区 - 桌面端左侧 */
.hero-content {
    position: relative;
    max-width: 500px;
    text-align: left;
}

/* 动效区 - 桌面端右侧 */
.hero-flow {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: visible;
    pointer-events: none;
}

/* 中心节点 - 小光点 */
.flow-node {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: radial-gradient(circle, #FFFFFF, var(--brand-blue-light));
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.6);
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%);
    animation: nodePulse 2s ease-in-out infinite;
}

@keyframes nodePulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.5);
        box-shadow: 0 0 25px rgba(59, 130, 246, 0.7), 0 0 40px rgba(59, 130, 246, 0.4);
    }
}

/* 文字流 - 原文与译文 */
.flow-strip {
    position: absolute;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* 左侧入流 - 多色原文 */
.strip-in {
    animation: flowToCenter 6s linear infinite;
    animation-fill-mode: backwards;
    opacity: 0;
}

/* 右侧出流 - 绿色译文 */
.strip-out {
    color: rgba(16, 185, 129, 0.8);
    animation: flowFromCenter 6s linear infinite;
    animation-fill-mode: backwards;
    opacity: 0;
}

/* 各语言输入颜色 */
/* 中文 - 银色 */
.strip-in-1, .strip-in-10, .strip-in-19 { color: rgba(156, 163, 175, 0.8); }

/* 英文 - 琥珀色 */
.strip-in-2, .strip-in-11, .strip-in-20 { color: rgba(245, 158, 11, 0.8); }

/* 日文 - 紫色 */
.strip-in-3, .strip-in-12, .strip-in-21 { color: rgba(168, 85, 247, 0.8); }

/* 韩文 - 橙色 */
.strip-in-4, .strip-in-13, .strip-in-22 { color: rgba(249, 115, 22, 0.8); }

/* 阿拉伯文 - 青色 */
.strip-in-5, .strip-in-14, .strip-in-23 { color: rgba(6, 182, 212, 0.8); }

/* 西班牙文 - 粉色 */
.strip-in-6, .strip-in-15, .strip-in-24 { color: rgba(236, 72, 153, 0.8); }

/* 法文 - 靛蓝色 */
.strip-in-7, .strip-in-16, .strip-in-25 { color: rgba(99, 102, 241, 0.8); }

/* 德文 - 黄色 */
.strip-in-8, .strip-in-17, .strip-in-26 { color: rgba(234, 179, 8, 0.8); }

/* 俄文 - 品红色 */
.strip-in-9, .strip-in-18, .strip-in-27 { color: rgba(217, 70, 239, 0.8); }

/* 中文→英文 (分散：顶-中-底) */
.strip-in-1 { top: -10%; animation-delay: 0s; }
.strip-out-1 { top: -10%; animation-delay: 0s; }
.strip-in-10 { top: 45%; animation-delay: 5.5s; }
.strip-out-10 { top: 45%; animation-delay: 5.5s; }
.strip-in-19 { top: 85%; animation-delay: 3.2s; }
.strip-out-19 { top: 85%; animation-delay: 3.2s; }

/* 英文→日文 (分散：顶-中-底) */
.strip-in-2 { top: 20%; animation-delay: 1.8s; }
.strip-out-2 { top: 20%; animation-delay: 1.8s; }
.strip-in-11 { top: 55%; animation-delay: 7.1s; }
.strip-out-11 { top: 55%; animation-delay: 7.1s; }
.strip-in-20 { top: 95%; animation-delay: 4.3s; }
.strip-out-20 { top: 95%; animation-delay: 4.3s; }

/* 日文→韩文 (分散：顶-中-底) */
.strip-in-3 { top: -5%; animation-delay: 2.6s; }
.strip-out-3 { top: -5%; animation-delay: 2.6s; }
.strip-in-12 { top: 35%; animation-delay: 8.2s; }
.strip-out-12 { top: 35%; animation-delay: 8.2s; }
.strip-in-21 { top: 75%; animation-delay: 5.9s; }
.strip-out-21 { top: 75%; animation-delay: 5.9s; }

/* 韩文→阿拉伯文 (分散：顶-中-底) */
.strip-in-4 { top: 10%; animation-delay: 0.7s; }
.strip-out-4 { top: 10%; animation-delay: 0.7s; }
.strip-in-13 { top: 50%; animation-delay: 6.4s; }
.strip-out-13 { top: 50%; animation-delay: 6.4s; }
.strip-in-22 { top: 90%; animation-delay: 3.8s; }
.strip-out-22 { top: 90%; animation-delay: 3.8s; }

/* 阿拉伯文→西班牙文 (分散：顶-中-底) */
.strip-in-5 { top: -13%; animation-delay: 1.3s; }
.strip-out-5 { top: -13%; animation-delay: 1.3s; }
.strip-in-14 { top: 40%; animation-delay: 7.7s; }
.strip-out-14 { top: 40%; animation-delay: 7.7s; }
.strip-in-23 { top: 80%; animation-delay: 4.6s; }
.strip-out-23 { top: 80%; animation-delay: 4.6s; }

/* 西班牙文→法文 (分散：顶-中-底) */
.strip-in-6 { top: 15%; animation-delay: 2.1s; }
.strip-out-6 { top: 15%; animation-delay: 2.1s; }
.strip-in-15 { top: 60%; animation-delay: 8.5s; }
.strip-out-15 { top: 60%; animation-delay: 8.5s; }
.strip-in-24 { top: 100%; animation-delay: 5.2s; }
.strip-out-24 { top: 100%; animation-delay: 5.2s; }

/* 法文→德文 (分散：顶-中-底) */
.strip-in-7 { top: 5%; animation-delay: 3.4s; }
.strip-out-7 { top: 5%; animation-delay: 3.4s; }
.strip-in-16 { top: 65%; animation-delay: 9.1s; }
.strip-out-16 { top: 65%; animation-delay: 9.1s; }
.strip-in-25 { top: 30%; animation-delay: 6.8s; }
.strip-out-25 { top: 30%; animation-delay: 6.8s; }

/* 德文→俄文 (分散：顶-底-顶) */
.strip-in-8 { top: 25%; animation-delay: 1.5s; }
.strip-out-8 { top: 25%; animation-delay: 1.5s; }
.strip-in-17 { top: 70%; animation-delay: 7.9s; }
.strip-out-17 { top: 70%; animation-delay: 7.9s; }
.strip-in-26 { top: -8%; animation-delay: 4.1s; }
.strip-out-26 { top: -8%; animation-delay: 4.1s; }

/* 俄文→中文 (分散：顶-中-底) */
.strip-in-9 { top: 0%; animation-delay: 2.9s; }
.strip-out-9 { top: 0%; animation-delay: 2.9s; }
.strip-in-18 { top: 58%; animation-delay: 8.8s; }
.strip-out-18 { top: 58%; animation-delay: 8.8s; }
.strip-in-27 { top: 97%; animation-delay: 5.6s; }
.strip-out-27 { top: 97%; animation-delay: 5.6s; }

/* 左→中心动画（银色原文消失在光点处） */
@keyframes flowToCenter {
    0% {
        transform: translateX(-150%);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    40% {
        opacity: 0.8;
    }
    50% {
        transform: translateX(30%);
        opacity: 0;
    }
    100% {
        transform: translateX(30%);
        opacity: 0;
    }
}

/* 中心→右动画（绿色译文从光点出现） */
@keyframes flowFromCenter {
    0% {
        transform: translateX(30%);
        opacity: 0;
    }
    50% {
        transform: translateX(30%);
        opacity: 0;
    }
    60% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateX(180%);
        opacity: 0;
    }
}

/* 超大标题 - 居中样式 */
.hero-title {
    font-size: var(--font-hero);
    font-weight: var(--font-black);
    line-height: 1.05;
    letter-spacing: -3px;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.hero-subtitle {
    font-size: var(--font-subheading);
    font-weight: var(--font-semibold);
    color: var(--brand-blue);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

/* Hero CTA区域 */
.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-start;
    flex-wrap: wrap;
}

/* 按钮 - 精致细节 */
.btn {
    padding: 14px 32px;
    border-radius: 10px;
    font-size: var(--font-body);
    font-weight: var(--font-semibold);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* 主按钮 - 微妙动效 */
.btn-primary {
    background: var(--brand-blue);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover {
    background: var(--brand-blue-dark);
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

/* 次级按钮 */
.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--brand-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-large {
    padding: 18px 42px;
    font-size: 18px;
    border-radius: 12px;
}


/* ===== 通用章节样式 ===== */
.section-title {
    font-size: 48px;
    font-weight: 800;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 64px;
    letter-spacing: -0.5px;
}

/* ===== 痛点与解决方案 ===== */
.pain-solutions {
    padding: 200px 0;
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
    position: relative;
}

/* 痛点解决方案对比 */
.solution-comparison {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 1000px;
    margin: 0 auto;
    padding: 0;
}

.comparison-header {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 340px));
    justify-content: center;
    gap: var(--spacing-md);
}

.header-label {
    font-size: 20px;
    font-weight: 700;
    padding-bottom: 12px;
    text-align: center;
}

.header-label:first-child { color: #EF4444; }
.header-label:last-child { color: var(--brand-blue); }

.comparison-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 340px));
    justify-content: center;
    gap: var(--spacing-md);
}

.comparison-item {
    border: 1px solid rgba(12,14,18,0.06);
    border-radius: 14px;
    padding: 16px 18px;
    font-size: 15px;
    line-height: 1.6;
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 12px 30px rgba(24, 24, 27, 0.06);
}

.comparison-item p {
    margin: 0;
}

.comparison-item.problem {
    text-align: center;
}

.comparison-item.solution {
    border: none;
    background: var(--brand-blue-light);
    box-shadow: 0 22px 45px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
    text-align: center;
}

/* Icon样式 - 桌面端隐藏 */
.problem-icon,
.solution-icon {
    display: none;
}

.comparison-row:nth-of-type(1) .comparison-item.solution::after {
    inset: -25% 40% auto -15%;
}

.comparison-row:nth-of-type(2) .comparison-item.solution::after {
    inset: -20% 60% auto -25%;
}

.comparison-row:nth-of-type(3) .comparison-item.solution::after {
    inset: -35% 30% auto -5%;
}

.comparison-row:nth-of-type(4) .comparison-item.solution::after {
    inset: -30% 55% auto -20%;
}

.comparison-row:nth-of-type(5) .comparison-item.solution::after {
    inset: -40% 45% auto 0%;
}

.comparison-row:nth-of-type(6) .comparison-item.solution::after {
    inset: -28% 50% auto -30%;
}

.comparison-item.solution::after {
    content: '';
    position: absolute;
    inset: -30% 50% auto -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.5), transparent 70%);
    opacity: 0.6;
    transform: rotate(-25deg);
}

.comparison-item.solution p {
    position: relative;
    z-index: 1;
    color: #ffffff;
    font-weight: 600;
}

.comparison-row:nth-of-type(odd) .comparison-item.problem {
    transform: rotate(-0.7deg) translate(-6px, -2px);
}

.comparison-row:nth-of-type(odd) .comparison-item.solution {
    transform: rotate(0.6deg) translate(6px, 4px);
}

.comparison-row:nth-of-type(even) .comparison-item.problem {
    transform: rotate(0.6deg) translate(4px, 4px);
}

.comparison-row:nth-of-type(even) .comparison-item.solution {
    transform: rotate(-0.5deg) translate(-8px, -3px);
}

/* 对比表格 - 移动端优化 */
@media (max-width: 768px) {
    .pain-solutions {
        padding: 60px 0;
    }

    .pain-solutions .section-title {
        font-size: 28px;
        margin-bottom: 40px;
        line-height: 1.3;
    }

    .comparison-header {
        display: none;
    }

    .header-label {
        display: none;
    }

    .comparison-row {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-bottom: 16px;
    }

    .comparison-item {
        transform: none !important;
        text-align: left;
        padding: 16px 18px;
        font-size: 14px;
        line-height: 1.6;
        display: flex;
        align-items: flex-start;
        gap: 12px;
    }

    .comparison-item p {
        flex: 1;
    }

    .comparison-item.problem {
        border: none;
        background: transparent;
        box-shadow: none;
    }

    .comparison-item.solution {
        border: none;
        box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15);
    }

    /* 移动端显示icons */
    .problem-icon,
    .solution-icon {
        display: block;
        flex-shrink: 0;
        margin-top: 2px;
    }

    .problem-icon {
        font-size: 18px;
        color: #EF4444;
    }

    .solution-icon {
        font-size: 18px;
        color: #10B981;
        position: relative;
        z-index: 2;
    }
}

/* 移除悬停效果 - 核心优势不需要交互 */
.feature-card.featured {
    /* 保持静态样式 */
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--gray-50);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--brand-blue);
}

.feature-icon i {
    font-size: 28px;
    color: var(--brand-blue);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* 视频占位 */
.feature-video {
    margin-top: 20px;
}

.video-placeholder {
    background: var(--gray-50);
    border: 1px dashed var(--gray-300);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
}

.video-placeholder span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-tertiary);
    display: block;
    margin-bottom: 4px;
}

.video-desc {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ===== 5大效果提升 - 横向滑动 ===== */
.capabilities {
    padding: 100px 0;
    background: var(--white);
    position: relative;
}

.capabilities-header {
    text-align: center;
    margin-bottom: 60px;
}

/* 横向滑动容器 - 添加吸附效果 */
.capabilities-scroll {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 20px 0;
    margin: 0 auto;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
    /* 关键: Scroll Snap */
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none; /* Firefox隐藏滚动条 */
    -ms-overflow-style: none; /* IE隐藏滚动条 */
}

.capabilities-scroll::-webkit-scrollbar {
    display: none; /* Chrome/Safari隐藏滚动条 */
}

.capabilities-track {
    display: flex;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md);
    width: max-content;
}

/* 单个能力项 - 添加吸附 */
.capability-item {
    flex: 0 0 340px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    /* 吸附效果 */
    scroll-snap-align: center;
    scroll-snap-stop: always;
}

/* 图片占位区 */
.capability-image {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.capability-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.capability-item .capability-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--brand-blue-light);
    padding: 0;
    margin: 0;
}

.capability-points {
    list-style: none;
    padding: 0;
    margin: 0;
}

.capability-points li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.capability-points li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--brand-blue);
    font-weight: 700;
}

/* 滑动指示器 */
.scroll-indicator {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* 定价区域滑动指示器 */
.pricing-scroll-indicator {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 500;
    display: none; /* 默认隐藏 */
}

@media (max-width: 1024px) {
    .pricing-scroll-indicator {
        display: block;
    }
}

/* 自定义滚动条 */
.capabilities-scroll::-webkit-scrollbar {
    height: 6px;
    background: transparent;
}

.capabilities-scroll::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}

.capabilities-scroll::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 3px;
    transition: background 0.2s ease;
}

.capabilities-scroll:hover::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.32);
}

/* ===== 传统方式 vs StringLock ===== */
.full-comparison {
    padding: 120px 0;
    background: var(--bg-primary);
}

.full-comparison .section-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.full-comparison .title-brand {
    color: var(--brand-blue-light);
}

.workflow-compare {
    margin-bottom: var(--spacing-xl);
}

.workflow-grid {
    display: grid;
    gap: 44px;
}

.workflow-row {
    display: grid;
    grid-template-columns: repeat(6, minmax(120px, 1fr));
    gap: 20px;
    align-items: center;
}

.workflow-row-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0 4px;
}

.workflow-row-header.bottom-header {
    margin-top: 20px;
}

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

.row-label.stringlock-label,
.row-duration.stringlock-duration {
    color: var(--brand-blue-light);
}

.workflow-card {
    border: none;
    padding: 0;
    min-height: auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.traditional-row .step-meta {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.traditional-row .step-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

.traditional-row .step-meta .time {
    color: #DC2626;
}

.traditional-row .step-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.stringlock-row .step-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--brand-blue-light);
}

.stringlock-row .step-desc {
    font-size: 12px;
    font-weight: 600;
    color: #047857;
}

.workflow-card .step-desc,
.workflow-card .step-meta {
    display: block;
}

.workflow-bridge {
    display: grid;
    grid-template-columns: repeat(6, minmax(120px, 1fr));
    gap: 20px;
    align-items: center;
    justify-items: center;
    padding: 12px 0;
}

.bridge-slot {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.bridge-node {
    --node-size: 20px;
    width: var(--node-size);
    height: var(--node-size);
    border-radius: 999px;
    background: var(--gray-300);
    transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    animation: bridgeBreath 3s ease-in-out infinite;
}

.bridge-node.is-active {
    background: var(--brand-blue-light);
    box-shadow: 0 8px 20px rgba(56, 105, 255, 0.25);
    transform: scale(1);
    animation: none;
}

.bridge-node.no-breath {
    animation: none;
}

@keyframes bridgeBreath {
    0% { transform: scale(0.92); }
    50% { transform: scale(1.08); }
    100% { transform: scale(0.92); }
}

.bridge-slot.has-tooltip .bridge-node {
    cursor: pointer;
}

.bridge-tooltip {
    position: absolute;
    top: -140px;
    width: 220px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 10;
}

.bridge-slot:hover .bridge-tooltip {
    opacity: 1;
    transform: translateY(0);
}

.tooltip-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-400);
    margin-bottom: 10px;
}

.bridge-tooltip .tooltip-title + .tooltip-group {
    margin-top: -4px;
}

.bridge-tooltip .tooltip-title:not(:first-child) {
    margin-top: 14px;
}

.tooltip-metric {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.tooltip-metric:last-child {
    margin-bottom: 0;
}

.tooltip-group {
    margin-bottom: 10px;
}

.tooltip-group:last-child {
    margin-bottom: 0;
}

.tooltip-metric .label {
    font-weight: 700;
}

.tooltip-metric .label.traditional {
    color: var(--text-primary);
}

.tooltip-metric .label.stringlock {
    color: var(--brand-blue-light);
}

.tooltip-metric .value {
    font-weight: 600;
}

.tooltip-metric .value.traditional {
    color: var(--gray-500);
}

.tooltip-metric .value.stringlock {
    color: #047857;
}

.workflow-row + .workflow-bridge,
.workflow-bridge + .workflow-row {
    margin-top: 0;
}

/* 工作流程对比 - 移动端优化 */
@media (max-width: 900px) {
    .workflow-row,
    .workflow-bridge {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .workflow-card {
        min-height: 100px;
    }

    .bridge-node {
        --node-size: 16px;
    }

    .bridge-tooltip {
        width: 180px;
        top: -120px;
    }
}

@media (max-width: 768px) {
    .full-comparison {
        padding: 60px 0;
    }

    .full-comparison .container {
        padding: 0 16px;
    }

    /* 移动端新布局：圆点在顶部，2列流程在下方 */
    .workflow-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px 16px;
        grid-template-rows: auto auto repeat(6, 1fr) auto;
        padding: 0 8px;
    }

    /* 隐藏原有的header */
    .workflow-row-header {
        display: none;
    }

    /* 圆点行放在最顶部，跨2列 */
    .workflow-bridge {
        grid-column: 1 / -1;
        grid-row: 1;
        display: flex;
        justify-content: center;
        gap: 16px;
        padding: 20px 0;
        margin-bottom: 16px;
    }

    /* 列标题 - 第2行 */
    .column-header-traditional {
        grid-column: 1;
        grid-row: 2;
        text-align: center;
        font-size: 13px;
        font-weight: 700;
        color: #6B7280;
        margin-bottom: 12px;
    }

    .column-header-stringlock {
        grid-column: 2;
        grid-row: 2;
        text-align: center;
        font-size: 13px;
        font-weight: 700;
        color: var(--brand-blue);
        margin-bottom: 12px;
    }

    /* 传统流程列 - 拆分成6行 */
    .traditional-row {
        grid-column: 1;
        grid-row: 3;
        display: contents;
    }

    /* StringLock流程列 - 拆分成6行 */
    .stringlock-row {
        grid-column: 2;
        grid-row: 3;
        display: contents;
    }

    /* 每张卡片独立占一行，左右对齐 */
    .traditional-row .workflow-card:nth-child(1) { grid-column: 1; grid-row: 3; }
    .traditional-row .workflow-card:nth-child(2) { grid-column: 1; grid-row: 4; }
    .traditional-row .workflow-card:nth-child(3) { grid-column: 1; grid-row: 5; }
    .traditional-row .workflow-card:nth-child(4) { grid-column: 1; grid-row: 6; }
    .traditional-row .workflow-card:nth-child(5) { grid-column: 1; grid-row: 7; }
    .traditional-row .workflow-card:nth-child(6) { grid-column: 1; grid-row: 8; }

    .stringlock-row .workflow-card:nth-child(1) { grid-column: 2; grid-row: 3; }
    .stringlock-row .workflow-card:nth-child(2) { grid-column: 2; grid-row: 4; }
    .stringlock-row .workflow-card:nth-child(3) { grid-column: 2; grid-row: 5; }
    .stringlock-row .workflow-card:nth-child(4) { grid-column: 2; grid-row: 6; }
    .stringlock-row .workflow-card:nth-child(5) { grid-column: 2; grid-row: 7; }
    .stringlock-row .workflow-card:nth-child(6) { grid-column: 2; grid-row: 8; }

    /* 列footer - 第9行 */
    .column-footer-traditional {
        grid-column: 1;
        grid-row: 9;
        text-align: center;
        font-size: 12px;
        font-weight: 700;
        color: #6B7280;
        margin-top: 12px;
    }

    .column-footer-stringlock {
        grid-column: 2;
        grid-row: 9;
        text-align: center;
        font-size: 12px;
        font-weight: 700;
        color: var(--brand-blue);
        margin-top: 12px;
    }

    .bridge-slot {
        padding: 0;
    }

    .bridge-node {
        --node-size: 20px;
    }

    .bridge-tooltip {
        width: 200px;
        top: -140px;
        padding: 12px;
    }

    /* 默认居中 */
    .bridge-slot.has-tooltip .bridge-tooltip {
        left: 50%;
        transform: translateX(-50%);
    }

    /* 第1个圆点：左对齐 */
    .bridge-slot.has-tooltip:nth-child(2) .bridge-tooltip {
        left: 0;
        transform: translateX(0);
    }

    /* 第2个圆点：居中偏左 */
    .bridge-slot.has-tooltip:nth-child(3) .bridge-tooltip {
        left: 50%;
        transform: translateX(-50%);
    }

    /* 第3、4个圆点：居中 */
    .bridge-slot.has-tooltip:nth-child(4) .bridge-tooltip,
    .bridge-slot.has-tooltip:nth-child(5) .bridge-tooltip {
        left: 50%;
        transform: translateX(-50%);
    }

    /* 第5个圆点：右对齐 */
    .bridge-slot.has-tooltip:nth-child(6) .bridge-tooltip {
        right: 0;
        left: auto;
        transform: translateX(0);
    }

    .tooltip-title {
        font-size: 12px;
        margin-bottom: 8px;
    }

    .tooltip-metric {
        font-size: 11px;
    }

    /* 流程行改为纵向排列 */
    .workflow-row {
        display: contents;
    }

    .workflow-card {
        padding: 14px 10px;
        height: 100%;
        border: 2px solid transparent;
        border-radius: 8px;
        background: var(--white);
        transition: all 0.3s ease;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    }

    /* 选中状态 - 传统流程灰色描边 */
    .traditional-row .workflow-card.highlighted {
        border-color: #9CA3AF;
        box-shadow: 0 2px 8px rgba(156, 163, 175, 0.3);
    }

    /* 选中状态 - StringLock蓝色描边 */
    .stringlock-row .workflow-card.highlighted {
        border-color: var(--brand-blue);
        box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
    }

    .workflow-card .step-title {
        font-size: 13px;
        line-height: 1.3;
        font-weight: 600;
        margin: 3px 0;
    }

    .workflow-card .step-desc {
        font-size: 11px;
        line-height: 1.4;
        margin: 3px 0;
        color: var(--text-secondary);
    }

    .traditional-row .step-meta {
        font-size: 10px;
        margin: 2px 0;
        color: #EF4444;
        font-weight: 500;
    }
}

@media (max-width: 560px) {
    .workflow-row,
    .workflow-bridge {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .workflow-card {
        min-height: auto;
        padding: 12px;
        border: 1px solid var(--gray-200);
        border-radius: 8px;
        background: var(--white);
    }

    .bridge-slot {
        padding: 8px 0;
    }

    .bridge-node {
        --node-size: 12px;
    }

    .bridge-tooltip {
        left: 50%;
        transform: translateX(-50%);
        width: 200px;
        top: -115px;
    }
}

/* ===== 工作流程 ===== */
.workflow {
    padding: 200px 0;
    background: var(--bg-primary);
}

/* 时间轴流程 */
.workflow-timeline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 900px;
    margin: 0 auto 40px;
    position: relative;
}

.timeline-item {
    display: flex;
    align-items: center;
    flex: 1;
}

.timeline-item:last-child {
    flex: 0;
}

.timeline-step {
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-icon {
    display: inline-block;
    font-size: 32px;
    margin-bottom: 12px;
}

.timeline-step h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.step-time {
    font-size: 14px;
    font-weight: 700;
    color: var(--brand-blue);
}

/* 进度线 */
.timeline-progress {
    flex: 1;
    padding: 0 20px;
}

.progress-line {
    height: 2px;
    background: linear-gradient(90deg, var(--brand-blue) 0%, var(--brand-blue-light) 100%);
    position: relative;
}

.progress-line::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    width: 10px;
    height: 10px;
    background: var(--brand-blue);
    border-radius: 50%;
}

/* 总时长 */
.workflow-total {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--white) 0%, rgba(37, 99, 235, 0.02) 100%);
    border-radius: 12px;
    border: 1px solid rgba(37, 99, 235, 0.1);
    max-width: 500px;
    margin: 0 auto;
}

.workflow-total p {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* ===== FAQ - 层叠卡片布局 ===== */
.faq {
    padding: 200px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
    position: relative;
}

.faq-list {
    max-width: 840px;
    margin: 0 auto;
    position: relative;
}

/* FAQ卡片 - 静态展示无交互 */
.faq-item {
    background: var(--bg-primary);
    padding: 20px 28px;
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    position: relative;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}

/* 创建层次感 - 奇偶不同缩进 */
.faq-item:nth-child(odd) {
    margin-left: 0;
    margin-right: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.faq-item:nth-child(even) {
    margin-left: var(--spacing-md);
    margin-right: 0;
    box-shadow: var(--shadow-xs);
}

/* 移除hover效果 - FAQ无需交互 */

.faq-question {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.faq-answer {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* ===== CTA 区域 - 简化版 ===== */
.roles-cta {
    position: relative;
    padding: 100px 0;
    color: white;
    background: url("assets/footer-background.png") center/cover no-repeat;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.roles-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(24,24,27,0.92), rgba(24,24,27,0.75));
}

.roles-cta-hero {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 80px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.roles-cta-copy {
    text-align: right;
    max-width: 500px;
    flex-shrink: 0;
}

.roles-cta-copy h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    white-space: nowrap;
}

.roles-cta-copy p {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 36px;
    line-height: 1.6;
}

/* 隐藏角色卡片 */
.roles-arc {
    position: relative;
    min-height: 520px;
    width: 520px;
    flex-shrink: 0;
    list-style: none;
    padding: 0;
    margin: 0;
}

.role-chip {
    position: absolute;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 14px 18px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 280px;
    list-style: none;
}

.role-chip h4 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
    white-space: nowrap;
}

.role-chip p {
    font-size: 14px;
    font-weight: 500;
    color: var(--brand-blue);
    line-height: 1.4;
}

.role-chip:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

@keyframes rolePulse {
    0% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
    100% { transform: translateY(0); }
}

.role-chip.role-1 { top: 0; left: 35px; animation: rolePulse 3s ease-in-out infinite; animation-delay: 0s; }
.role-chip.role-2 { top: 90px; left: 110px; animation: rolePulse 3.5s ease-in-out infinite; animation-delay: 0.5s; }
.role-chip.role-3 { top: 180px; left: 185px; animation: rolePulse 3.2s ease-in-out infinite; animation-delay: 1s; }
.role-chip.role-4 { top: 270px; left: 185px; animation: rolePulse 3.8s ease-in-out infinite; animation-delay: 1.5s; }
.role-chip.role-5 { top: 360px; left: 110px; animation: rolePulse 3.3s ease-in-out infinite; animation-delay: 0.8s; }
.role-chip.role-6 { top: 450px; left: 35px; animation: rolePulse 3.6s ease-in-out infinite; animation-delay: 1.2s; }

@media (max-width: 1024px) {
    .roles-cta {
        padding: 80px 0;
    }

    .roles-cta-hero {
        flex-direction: column;
        min-height: auto;
        gap: 48px;
    }

    .roles-cta-copy {
        flex: auto;
        text-align: center;
        width: 100%;
        margin-bottom: 0;
    }

    .roles-cta-copy h2 {
        font-size: 36px;
        margin-bottom: 20px;
    }

    .roles-cta-copy p {
        font-size: 17px;
        margin-bottom: 28px;
    }

    .roles-arc {
        min-height: auto;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        max-width: 600px;
        margin: 0 auto;
    }

    .role-chip {
        position: static;
        width: auto;
        padding: 16px 18px;
        animation: none;
    }

    .role-chip h4 {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .role-chip p {
        font-size: 15px;
    }
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 40px;
    background: var(--gray-900);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 48px;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gray-400);
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a,
.footer-section span {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.footer-bottom p {
    color: var(--gray-500);
}

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

.footer-legal a {
    color: var(--gray-500);
    text-decoration: none;
    transition: color 0.15s ease;
}

.footer-legal span {
    color: var(--gray-700);
}

.footer-legal a:hover {
    color: white;
}

/* ===== 中等屏幕优化 (平板横屏) ===== */
@media (max-width: 900px) {
    /* 定价卡片变两列 */
    .pricing-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-card:nth-child(3) {
        grid-column: 1 / -1;
    }

    /* 企业功能变两列 */
    .enterprise-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===== 响应式设计 - 平板 ===== */
@media (max-width: 1024px) {
    /* 字体层次调整 */
    :root {
        --font-hero: 56px;
        --font-display: 44px;
        --font-title: 36px;
    }

    /* Hero区域响应式 */
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .hero-content {
        text-align: center;
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-flow {
        height: 300px;
    }

    .hero-flow .flow-strip {
        font-size: 14px;
        gap: 16px;
    }

    .flow-node {
        width: 16px;
        height: 16px;
    }

    /* Features网格响应式 - 保持层次感 */
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: auto auto auto;
    }

    .feature-card:nth-child(1) {
        grid-column: span 4;
        grid-row: 1;
    }

    .feature-card:nth-child(2),
    .feature-card:nth-child(3) {
        grid-column: span 2;
        grid-row: 2;
    }

    .feature-card:nth-child(4),
    .feature-card:nth-child(5) {
        grid-column: span 2;
        grid-row: 3;
    }

    /* 统计数据响应式 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card:nth-child(odd),
    .stat-card:nth-child(even) {
        transform: none;
    }

    .workflow-steps {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: 16px 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

/* ===== 响应式设计 - 手机 ===== */
@media (max-width: 768px) {
    /* 字体层次调整 */
    :root {
        --font-hero: 40px;
        --font-display: 32px;
        --font-title: 28px;
        --font-heading: 22px;
        --font-subheading: 18px;

        /* 间距调整 */
        --spacing-3xl: 80px;
        --spacing-2xl: 64px;
        --spacing-xl: 48px;
    }

    /* 导航菜单 - 移动端只显示语言切换 */
    .nav-menu {
        display: flex !important;
        justify-content: flex-end;
    }

    .nav-menu li:not(.lang-switch) {
        display: none !important;
    }

    /* 语言切换按钮 - 移动端正常显示 */
    .lang-switch {
        display: flex !important;
    }

    .lang-btn {
        padding: 6px 10px;
        font-size: 13px;
    }

    /* 角色卡片 - 移动端隐藏但保留背景图片 */
    .roles-arc {
        display: none;
    }

    .role-chip {
        display: none !important;
    }

    /* Hero响应式 - 移动端重叠层次布局 */
    .hero {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }

    .hero .container {
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 400px;
        grid-template-columns: unset;
        gap: unset;
    }

    .hero-content {
        position: relative;
        max-width: 100%;
        padding: 40px 24px;
        text-align: center;
        z-index: 10;
    }

    .hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-xs);
        justify-content: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    /* 动效区改为背景层 */
    .hero-flow {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        overflow: visible;
        pointer-events: none;
        z-index: 1;
    }

    .flow-node {
        width: 8px;
        height: 8px;
        left: 50%;
    }

    .hero-flow .flow-strip {
        font-size: 11px;
    }

    /* Hero标题优化 */
    .hero-title {
        letter-spacing: -2px;
        line-height: 1.1;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-description {
        font-size: 15px;
        line-height: 1.7;
    }

    /* Features网格完全响应式 */
    .features-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: var(--spacing-sm);
    }

    .feature-card:nth-child(n) {
        grid-column: span 1;
        grid-row: auto;
        margin: 0;
        padding: var(--spacing-md);
    }

    /* 统计数据移动端 */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    /* FAQ移动端优化 */
    .faq-item:nth-child(odd),
    .faq-item:nth-child(even) {
        margin-left: 0;
        margin-right: 0;
    }

    .faq-item {
        padding: var(--spacing-md);
    }

    /* Footer - 重新设计移动端布局 */
    .footer {
        padding: 60px 0 32px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-brand {
        text-align: center;
        padding-bottom: 24px;
        border-bottom: 1px solid var(--gray-700);
    }

    .footer-brand h3 {
        font-size: 28px;
        margin-bottom: 16px;
    }

    .footer-brand p {
        font-size: 15px;
    }

    .footer-links {
        display: flex;
        justify-content: space-around;
        gap: 0;
        padding: 0 16px;
    }

    .footer-section {
        flex: 1;
        min-width: 0;
    }

    .footer-section h4 {
        font-size: 13px;
        margin-bottom: 16px;
    }

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

    .footer-section a,
    .footer-section span {
        font-size: 13px;
        word-wrap: break-word;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
        padding-top: 24px;
    }

    .footer-bottom p {
        font-size: 13px;
    }

    .footer-legal {
        gap: 16px;
        font-size: 13px;
    }
}

/* ===== 动画优化 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.4s ease-out;
}

/* ===== 定价部分 - 扁平化设计 ===== */
.pricing {
    padding: 120px 0;
    background: var(--white);
}

.pricing .section-title {
    font-size: 36px;
    font-weight: 700;
}

/* 计费基础说明 */
.pricing-basics {
    margin: 0 auto 48px;
    max-width: 800px;
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.billing-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: center;
}

.billing-label {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 400;
}

.billing-value {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 400;
    line-height: 1.6;
}

/* 切换标签 - 简化设计 */
.pricing-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 64px;
    border-bottom: 1px solid var(--gray-200);
}

.pricing-tab {
    padding: 16px 40px;
    border: none;
    background: transparent;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.pricing-tab:hover {
    color: var(--text-primary);
}

.pricing-tab.active {
    color: var(--brand-blue);
    border-bottom-color: var(--brand-blue);
    background: transparent;
}

/* 内容区域 */
.pricing-content {
    display: none;
}

.pricing-content.active {
    display: block;
}

/* 注释文字 */
.pricing-note {
    text-align: center;
    font-size: 15px;
    color: var(--text-secondary);
    margin: 0 auto 64px;
    padding: 20px;
    background: transparent;
    border: none;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 表格式布局 */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    max-width: 1100px;
    margin: 0 auto;
    border-top: none;
}

/* 单列 - 去卡片化 */
.pricing-card {
    background: transparent;
    border: none;
    border-right: 1px solid var(--gray-200);
    padding: 28px 20px;
    transition: all 0.2s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card:last-child {
    border-right: none;
}

.pricing-card:hover {
    background: var(--gray-50);
    transform: none;
}

/* 推荐列 - 蓝色背景 */
.pricing-card.featured {
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.03) 0%, rgba(37, 99, 235, 0.01) 100%);
    border-left: 3px solid var(--brand-blue);
    border-right: 3px solid var(--brand-blue);
    transform: none;
    padding-left: 29px;
    padding-right: 29px;
}

.pricing-card.featured:hover {
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.05) 0%, rgba(37, 99, 235, 0.02) 100%);
}

/* 推荐徽章 - 简化 */
.pricing-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--brand-blue);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: none;
}

/* 右上角折扣徽章 */
.corner-badge {
    position: absolute;
    top: 6px;
    right: 16px;
    padding: 4px 10px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
    background: transparent;
    color: var(--brand-blue);
    border: 1px solid var(--brand-blue);
}

.corner-badge.highlight {
    background: var(--brand-blue);
    color: white;
    border-color: var(--brand-blue);
}

/* 头部 */
.pricing-card-header {
    text-align: left;
    margin-bottom: 32px;
}

.pricing-card-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

/* 定位标签 - 简化 */
.pricing-tag {
    display: inline-block;
    padding: 0;
    border-radius: 0;
    font-size: 13px;
    font-weight: 500;
    background: transparent;
    color: var(--text-tertiary);
}

.pricing-tag.highlight {
    background: transparent;
    color: var(--brand-blue);
    font-weight: 600;
}

/* 价格区域 - 扁平化 */
.pricing-price {
    text-align: left;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--gray-200);
}

.price-row {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 12px;
    margin-bottom: 8px;
}

.price-original {
    font-size: 14px;
    color: var(--gray-400);
    text-decoration: line-through;
}

.price-current {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.price-current.single {
    font-size: 40px;
}

.price-discount {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
    background: transparent;
    color: var(--brand-blue);
    border: 1px solid var(--brand-blue);
    margin-bottom: 8px;
}

.price-discount.highlight {
    background: var(--brand-blue);
    color: white;
    border-color: var(--brand-blue);
}

.price-total {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.price-total strong {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

/* 功能列表 - 简化 */
.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px 0;
    flex: 1;
}

.pricing-features li {
    padding: 10px 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    border-bottom: none;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li strong {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

/* 蓝色高亮文字 */
.highlight-text {
    color: var(--brand-blue) !important;
}

/* 购买按钮 */
.pricing-btn, .contact-btn {
    width: 100%;
    padding: 14px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: 1.5px solid var(--text-primary);
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.pricing-btn::before, .contact-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.pricing-btn:hover, .contact-btn:hover {
    background: var(--brand-blue);
    color: white;
    border-color: var(--brand-blue);
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-md);
}

.pricing-btn:hover::before, .contact-btn:hover::before {
    width: 300px;
    height: 300px;
}

.pricing-btn.primary, .contact-btn.primary {
    background: var(--brand-blue);
    border-color: var(--brand-blue);
    color: white;
    box-shadow: var(--shadow-sm);
}

.pricing-btn.primary:hover, .contact-btn.primary:hover {
    background: var(--brand-blue-dark);
    border-color: var(--brand-blue-dark);
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-md);
}

.pricing-btn.primary:hover::before, .contact-btn.primary:hover::before {
    width: 300px;
    height: 300px;
}

/* 企业方案 - 扁平化 */
.enterprise-container {
    max-width: 900px;
    margin: 0 auto;
    background: transparent;
    border: none;
    padding: 64px 0;
}

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

.enterprise-header h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.enterprise-subtitle {
    font-size: 20px;
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 600;
}

.enterprise-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px 24px;
    margin-bottom: 56px;
}

.enterprise-feature {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 0;
    background: transparent;
    border-radius: 0;
}

.enterprise-feature i {
    font-size: 20px;
    color: var(--brand-blue);
}

.enterprise-feature span {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.enterprise-cta {
    text-align: center;
    padding-top: 0;
    border-top: none;
}

.enterprise-status {
    font-size: 15px;
    color: var(--text-tertiary);
    margin-bottom: 24px;
    font-weight: 500;
}

.enterprise-cta .pricing-btn, .enterprise-cta .contact-btn {
    max-width: 300px;
    margin: 0 auto;
    font-size: 15px;
    padding: 14px 32px;
}

/* 定价区域 - 平板响应式 */
@media (max-width: 1024px) {
    .pricing-cards {
        /* 改为横向滑动 */
        display: flex;
        overflow-x: auto;
        gap: 20px;
        padding: 20px 20px 20px 20px;
        -webkit-overflow-scrolling: touch;
        /* Scroll Snap */
        scroll-snap-type: x mandatory;
        scroll-behavior: smooth;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .pricing-cards::-webkit-scrollbar {
        display: none;
    }

    .pricing-card {
        /* 固定宽度,可滑动 */
        flex: 0 0 85%;
        min-width: 300px;
        max-width: 400px;
        border-right: none;
        border: 2px solid var(--gray-200);
        padding: 40px 28px;
        margin-bottom: 0;
        border-radius: 16px;
        background: var(--white);
        /* 吸附效果 */
        scroll-snap-align: center;
        scroll-snap-stop: always;
    }

    /* 年卡：去掉第1张和第3张的描边 */
    #annual .pricing-card:first-child,
    #annual .pricing-card:last-child {
        border: none;
    }

    /* 流量包：去掉所有3张的描边 */
    #payg .pricing-card {
        border: none;
    }

    .pricing-card:last-child {
        border-bottom: none;
        margin-bottom: 0;
        margin-right: 60px;
    }

    .pricing-card.featured {
        border: 3px solid var(--brand-blue);
        padding: 44px 28px;
        background: linear-gradient(180deg, rgba(37, 99, 235, 0.04) 0%, rgba(37, 99, 235, 0.02) 100%);
        /* 突出显示 */
        transform: scale(1.02);
    }

    .enterprise-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .pricing {
        padding: 60px 0;
    }

    .pricing .section-title {
        font-size: 28px;
        line-height: 1.3;
        margin-bottom: 40px;
    }

    .pricing-basics {
        flex-direction: column;
        gap: 20px;
        max-width: 100%;
        margin-bottom: 36px;
    }

    .billing-item {
        text-align: left;
        align-items: flex-start;
        padding: 16px;
        background: var(--gray-50);
        border-radius: 8px;
    }

    .billing-label {
        font-size: 12px;
        font-weight: 600;
        color: var(--text-primary);
    }

    .billing-value {
        font-size: 12px;
    }

    .pricing-tabs {
        flex-direction: row;
        gap: 0;
        overflow-x: auto;
        margin-bottom: 48px;
        -webkit-overflow-scrolling: touch;
    }

    .pricing-tab {
        padding: 14px 28px;
        white-space: nowrap;
        font-size: 15px;
    }

    .pricing-note {
        font-size: 14px;
        padding: 16px;
        margin-bottom: 36px;
    }

    /* 继承平板的横向滑动 */
    .pricing-cards {
        padding: 20px 16px;
        gap: 16px;
    }

    .pricing-card {
        flex: 0 0 88%;
        min-width: 280px;
        max-width: 360px;
        padding: 32px 24px;
        margin-bottom: 0;
        scroll-snap-align: center;
    }

    /* 年卡：去掉第1张和第3张的描边 */
    #annual .pricing-card:first-child,
    #annual .pricing-card:last-child {
        border: none;
    }

    /* 流量包：去掉所有3张的描边 */
    #payg .pricing-card {
        border: none;
    }

    .pricing-card:last-child {
        margin-right: 50px;
    }

    .pricing-card-header h3 {
        font-size: 22px;
    }

    .pricing-tag {
        font-size: 12px;
    }

    .price-current {
        font-size: 32px;
    }

    .price-total {
        font-size: 13px;
    }

    .price-total strong {
        font-size: 20px;
    }

    .pricing-features li {
        padding: 8px 0;
        font-size: 13px;
    }

    .corner-badge {
        top: 6px;
        right: 12px;
        font-size: 11px;
        padding: 3px 8px;
    }

    .enterprise-container {
        padding: 40px 0;
    }

    .enterprise-subtitle {
        font-size: 16px;
        margin-bottom: 40px;
    }

    .enterprise-features {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .enterprise-feature {
        flex-direction: row;
        align-items: center;
        gap: 12px;
        padding: 12px;
        background: var(--gray-50);
        border-radius: 8px;
    }

    .enterprise-feature i {
        font-size: 18px;
    }

    .enterprise-feature span {
        font-size: 13px;
    }

    /* 优化章节padding */
    .pain-solutions {
        padding: 80px 0;
    }

    .capabilities {
        padding: 60px 0;
    }

    .full-comparison {
        padding: 80px 0;
    }

    .faq {
        padding: 80px 0;
    }

    .roles-cta {
        padding: 80px 0;
    }

    /* 优化section标题 */
    .section-title {
        font-size: 32px;
        margin-bottom: 40px;
    }

    /* 优化按钮触摸目标 */
    .btn {
        min-height: 48px;
        padding: 16px 28px;
    }

    .pricing-btn {
        min-height: 48px;
        padding: 16px 24px;
    }
}

/* ===== 超小屏幕优化 (小屏手机) ===== */
@media (max-width: 480px) {
    /* 进一步缩小字体 */
    :root {
        --font-hero: 32px;
        --font-display: 28px;
        --font-title: 24px;
        --font-heading: 20px;
        --font-subheading: 16px;
    }

    /* 容器内边距 */
    .container {
        padding: 0 16px;
    }

    /* Hero区域 */
    .hero {
        padding: 60px 0 80px;
    }

    .hero-title {
        letter-spacing: -1.5px;
        margin-bottom: 20px;
    }

    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .hero-description {
        font-size: 14px;
        margin-bottom: 32px;
    }

    .hero-content {
        padding: 32px 20px;
    }

    .flow-node {
        width: 6px;
        height: 6px;
    }

    /* 导航栏 */
    .nav-container {
        padding: 0 16px;
        height: 56px;
    }

    .navbar.scrolled {
        box-shadow: 0 2px 8px rgba(12,14,18,0.08);
    }

    .nav-logo h1 {
        font-size: 18px;
    }

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

    /* 章节间距 */
    .pain-solutions,
    .full-comparison,
    .faq,
    .roles-cta {
        padding: 60px 0;
    }

    .capabilities {
        padding: 48px 0;
    }

    .pricing {
        padding: 60px 0;
    }

    /* 标题 */
    .section-title {
        font-size: 28px;
        margin-bottom: 32px;
        line-height: 1.2;
    }

    /* 对比表格 */
    .comparison-item {
        padding: 14px 16px;
        font-size: 14px;
    }

    .header-label {
        font-size: 16px;
        padding-bottom: 10px;
    }

    /* 能力卡片 */
    .capability-item {
        flex: 0 0 280px;
    }

    .capability-item .capability-title {
        font-size: 18px;
    }

    .capability-points li {
        font-size: 13px;
    }

    /* 工作流对比 */
    .workflow-row-header {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }

    .workflow-card .step-title {
        font-size: 16px;
    }

    .workflow-card .step-desc {
        font-size: 11px;
    }

    /* FAQ */
    .faq-question {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .faq-answer {
        font-size: 14px;
    }

    .faq-item {
        padding: 16px 18px;
    }

    /* 定价 */
    .pricing-tab {
        padding: 12px 20px;
        font-size: 14px;
    }

    .price-current {
        font-size: 32px;
    }

    .price-current.single {
        font-size: 36px;
    }

    .price-total strong {
        font-size: 20px;
    }

    /* Footer */
    .footer {
        padding: 60px 0 32px;
    }

    .footer-bottom {
        font-size: 12px;
    }

    /* 角色CTA */
    .roles-cta {
        padding: 60px 0;
    }

    .roles-cta-copy {
        text-align: center;
    }

    .roles-cta-copy h2 {
        font-size: 22px;
        line-height: 1.3;
        margin-bottom: 16px;
        white-space: normal;
    }

    .roles-cta-copy p {
        font-size: 15px;
        margin-bottom: 24px;
    }

    .roles-cta-copy .btn {
        padding: 12px 16px;
        font-size: 13px;
        min-height: auto;
        max-width: 140px;
        white-space: normal;
        line-height: 1.3;
    }

    .roles-arc {
        grid-template-columns: 1fr;
        gap: 12px;
        max-width: 100%;
    }

    .role-chip {
        padding: 14px 16px;
        text-align: left;
    }

    .role-chip h4 {
        font-size: 12px;
    }

    .role-chip p {
        font-size: 14px;
    }

    /* 能力卡片优化 */
    .capabilities {
        padding: 48px 0;
    }

    .capabilities-header {
        margin-bottom: 48px;
    }

    .capability-item {
        flex: 0 0 260px;
    }

    /* FAQ优化 */
    .faq {
        padding: 60px 0;
    }

    .faq .section-title {
        font-size: 28px;
        margin-bottom: 36px;
    }
}