/* ======================================
   现代化SaaS网站设计系统 - 职路平台
   基于现代设计趋势和优秀网站设计语言
   ====================================== */

/* 设计变量 - 现代化设计系统 */
:root {
    /* 主色彩系统 - 现代蓝色渐变 */
    --color-primary: #0066FF;
    --color-primary-light: #3388FF;
    --color-primary-dark: #0052CC;
    --color-secondary: #8B5CF6;
    --color-accent: #06D6A0;
    --color-success: #16A085;
    --color-warning: #F39C12;
    --color-error: #E74C3C;

    /* 中性色系 - 现代灰阶 */
    --color-gray-50: #FAFBFC;
    --color-gray-100: #F4F6F8;
    --color-gray-200: #E4E7EC;
    --color-gray-300: #D0D5DD;
    --color-gray-400: #98A2B3;
    --color-gray-500: #667085;
    --color-gray-600: #475467;
    --color-gray-700: #344054;
    --color-gray-800: #1D2939;
    --color-gray-900: #101828;

    /* 背景色系 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #FAFBFC;
    --bg-tertiary: #F4F6F8;
    --bg-dark: #0A0A0A;
    --bg-glass: rgba(255, 255, 255, 0.8);

    /* 文字颜色 */
    --text-primary: #101828;
    --text-secondary: #475467;
    --text-tertiary: #667085;
    --text-white: #FFFFFF;
    --text-muted: #98A2B3;

    /* 现代渐变系统 */
    --gradient-primary: linear-gradient(135deg, #0066FF 0%, #8B5CF6 100%);
    --gradient-secondary: linear-gradient(135deg, #06D6A0 0%, #0066FF 100%);
    --gradient-accent: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
    --gradient-hero: linear-gradient(180deg, #FAFBFC 0%, #FFFFFF 100%);
    --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.6) 100%);

    /* 现代阴影系统 */
    --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow-md: 0 4px 8px rgba(16, 24, 40, 0.08), 0 2px 4px rgba(16, 24, 40, 0.04);
    --shadow-lg: 0 8px 16px rgba(16, 24, 40, 0.12), 0 4px 8px rgba(16, 24, 40, 0.08);
    --shadow-xl: 0 16px 32px rgba(16, 24, 40, 0.16), 0 8px 16px rgba(16, 24, 40, 0.12);
    --shadow-2xl: 0 24px 48px rgba(16, 24, 40, 0.20);
    --shadow-glow: 0 0 32px rgba(0, 102, 255, 0.24);

    /* 间距系统 - 8px基础单位 */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* 圆角系统 */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-2xl: 1.5rem;   /* 24px */
    --radius-3xl: 2rem;     /* 32px */
    --radius-full: 9999px;

    /* 动画系统 */
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* 字体系统 - 优化中文支持 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', 'Helvetica Neue', Helvetica, Arial, system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Cascadia Code', Consolas, 'Courier New', monospace;

    /* 字体大小系统 */
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 1.875rem;   /* 30px */
    --text-4xl: 2.25rem;    /* 36px */
    --text-5xl: 3rem;       /* 48px */
    --text-6xl: 3.75rem;    /* 60px */
    --text-7xl: 4.5rem;     /* 72px */
    --text-8xl: 6rem;       /* 96px */

    /* 行高系统 */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* 响应式断点 */
    --bp-sm: 640px;
    --bp-md: 768px;
    --bp-lg: 1024px;
    --bp-xl: 1280px;
    --bp-2xl: 1536px;
}

/* ======================================
   基础重置和全局样式
   ====================================== */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

::selection {
    background-color: rgba(0, 102, 255, 0.16);
    color: var(--text-primary);
}

/* 现代滚动条 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* ======================================
   布局组件
   ====================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

.section {
    padding: var(--space-24) 0;
}

.section-sm {
    padding: var(--space-16) 0;
}

.section-lg {
    padding: var(--space-32) 0;
}

/* ======================================
   现代化按钮系统
   ====================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: 600;
    line-height: var(--leading-none);
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    border: 1px solid transparent;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* 主要按钮 */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    border: none;
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

/* 次要按钮 */
.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--color-gray-400);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 幽灵按钮 */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--color-gray-200);
}

.btn-ghost:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--color-gray-300);
}

/* 按钮尺寸 */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-xl);
}

/* ======================================
   现代化导航栏
   ====================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--color-gray-200);
    transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--duration-normal) var(--ease-out);
}

.logo:hover {
    transform: scale(1.02);
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
}

.main-nav {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
    }
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.main-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
}

.main-nav a:hover {
    color: var(--color-primary);
    background: rgba(0, 102, 255, 0.04);
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle:hover {
    background: var(--bg-secondary);
}

/* ======================================
   现代化Hero区域
   ====================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: 5rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(0, 102, 255, 0.08) 0%, transparent 70%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-16);
    align-items: center;
    text-align: center;
}

@media (min-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
        text-align: left;
        gap: var(--space-20);
    }
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--gradient-card);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    backdrop-filter: blur(12px);
    width: fit-content;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    .hero-badge {
        margin: 0;
    }
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 900;
    line-height: var(--leading-tight);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: var(--text-6xl);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: var(--text-7xl);
    }
}

.hero-subtitle {
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    .hero-subtitle {
        font-size: var(--text-2xl);
        margin: 0;
    }
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero-buttons {
        justify-content: flex-start;
    }
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    order: -1;
}

@media (min-width: 1024px) {
    .hero-visual {
        order: 0;
    }
}

.hero-image {
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-2xl);
    transition: transform var(--duration-slow) var(--ease-out);
}

.hero-image:hover {
    transform: scale(1.02) rotate(1deg);
}

/* ======================================
   现代化特性网格
   ====================================== */

.features {
    background: var(--bg-primary);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-20);
}

.section-title {
    font-size: var(--text-5xl);
    font-weight: 900;
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

@media (min-width: 640px) {
    .section-title {
        font-size: var(--text-6xl);
    }
}

.section-subtitle {
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

@media (min-width: 640px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .feature-grid {
        gap: var(--space-10);
    }
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-3xl);
    padding: var(--space-10);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    group: true;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

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

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-8);
    color: var(--text-white);
    font-size: var(--text-2xl);
    transition: all var(--duration-normal) var(--ease-out);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-content h3 {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    line-height: var(--leading-tight);
}

.feature-content p {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
    font-size: var(--text-lg);
}

.feature-benefits {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.feature-benefits li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-base);
    color: var(--text-secondary);
}

.feature-benefits i {
    color: var(--color-success);
    font-size: var(--text-base);
    width: 20px;
    flex-shrink: 0;
}

/* ======================================
   下载区域
   ====================================== */

.download {
    background: var(--gradient-primary);
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 70%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.download .container {
    position: relative;
    z-index: 2;
}

.download .section-header {
    text-align: center;
}

.download .section-title {
    color: var(--text-white);
    background: none;
    -webkit-text-fill-color: var(--text-white);
}

.download-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--text-xl);
    margin-bottom: var(--space-16);
}

.download-content {
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-3xl);
    padding: var(--space-12);
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
    align-items: center;
    transition: all var(--duration-normal) var(--ease-out);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

@media (min-width: 768px) {
    .download-card {
        flex-direction: row;
        justify-content: space-between;
        padding: var(--space-16);
    }
}

.download-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.25);
}

/* 二维码区域 */
.download-qr-section {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.qr-code-box {
    width: 200px;
    height: 200px;
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    margin: 0 auto var(--space-6);
    position: relative;
    overflow: hidden;
}

.qr-code-box::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(255,255,255,0.8), rgba(255,255,255,0.2));
    border-radius: var(--radius-2xl);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--duration-normal);
}

.qr-code-box:hover::before {
    opacity: 1;
}

.qr-code-box img {
    width: 180px;
    height: 180px;
    border-radius: var(--radius-xl);
    background: #FFFFFF;
    padding: var(--space-2);
}

.qr-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--text-base);
    font-weight: 600;
}

.qr-label i {
    font-size: var(--text-lg);
}

/* 分割线 */
.download-divider {
    width: 1px;
    background: rgba(255, 255, 255, 0.2);
    position: relative;
    align-self: stretch;
    display: none;
}

@media (min-width: 768px) {
    .download-divider {
        display: block;
    }
}

.download-divider span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    white-space: nowrap;
}

/* 按钮区域 */
.download-buttons-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    width: 100%;
}

.download-buttons-title {
    color: var(--text-white);
    font-size: var(--text-xl);
    font-weight: 700;
    margin: 0;
    text-align: center;
}

@media (min-width: 768px) {
    .download-buttons-title {
        text-align: left;
    }
}

.download-buttons-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-5);
    border-radius: var(--radius-2xl);
    text-decoration: none;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(139, 92, 246, 0.1));
    opacity: 0;
    transition: opacity var(--duration-normal);
}

.download-btn:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.download-btn:hover::before {
    opacity: 1;
}

.download-btn-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.android-btn .download-btn-icon {
    background: linear-gradient(135deg, #3DDC84, #2DB870);
    color: white;
}

.ios-btn .download-btn-icon {
    background: linear-gradient(135deg, #000000, #434343);
    color: white;
}

.download-btn-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    position: relative;
    z-index: 1;
}

.download-btn-platform {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.download-btn-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.download-btn-arrow {
    font-size: var(--text-base);
    color: var(--text-tertiary);
    transition: all var(--duration-normal);
    position: relative;
    z-index: 1;
}

.download-btn:hover .download-btn-arrow {
    color: var(--color-primary);
    transform: translateX(4px);
}

/* 特性标签 */
.download-features {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-top: var(--space-12);
    flex-wrap: wrap;
}

.download-feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--text-sm);
    font-weight: 500;
}

.download-feature-item i {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.8);
}

/* 移动端优化 */
@media (max-width: 767px) {
    .download-card {
        padding: var(--space-8);
        gap: var(--space-8);
    }

    .qr-code-box {
        width: 160px;
        height: 160px;
    }

    .qr-code-box img {
        width: 140px;
        height: 140px;
        background: #FFFFFF;
        padding: var(--space-2);
    }

    .download-btn {
        padding: var(--space-4);
    }

    .download-btn-icon {
        width: 40px;
        height: 40px;
        font-size: var(--text-xl);
    }

    .download-features {
        gap: var(--space-4);
    }

    .download-feature-item {
        font-size: var(--text-xs);
    }
}

/* ======================================
   响应式设计
   ====================================== */

@media (max-width: 767px) {
    .hero {
        min-height: auto;
        padding: var(--space-24) 0 var(--space-20);
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

    .btn-lg {
        width: 100%;
        max-width: 300px;
    }

    .feature-grid {
        gap: var(--space-6);
    }

    .feature-card {
        padding: var(--space-8);
    }
}

/* ======================================
   动画和微交互
   ====================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-in {
    animation: fadeInUp 0.8s var(--ease-out) both;
}

.animate-in-delay {
    animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

/* ======================================
   工具类
   ====================================== */

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

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.relative { position: relative; }
.absolute { position: absolute; }

.mx-auto { margin-left: auto; margin-right: auto; }
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); }

/* ======================================
   工作流程样式
   ====================================== */

.workflow-section {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
    position: relative;
}

.workflow-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    margin-top: var(--space-16);
}

@media (min-width: 768px) {
    .workflow-steps {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
}

.workflow-step {
    text-align: center;
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-3xl);
    padding: var(--space-10);
    box-shadow: var(--shadow-sm);
    transition: all var(--duration-normal) var(--ease-out);
}

.workflow-step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: var(--radius-full);
    font-size: var(--text-xl);
    font-weight: 800;
    margin-bottom: var(--space-6);
    position: relative;
    z-index: 2;
}

.step-content {
    position: relative;
    z-index: 2;
}

.step-icon {
    width: 5rem;
    height: 5rem;
    background: var(--gradient-secondary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
    color: var(--text-white);
    font-size: var(--text-2xl);
}

.step-content h3 {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.step-content p {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    font-size: var(--text-lg);
}

/* ======================================
   用户评价样式
   ====================================== */

.testimonials-section {
    padding: var(--space-24) 0;
    background: var(--bg-primary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-top: var(--space-16);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background: var(--gradient-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-3xl);
    padding: var(--space-10);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.testimonial-rating {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}

.testimonial-rating i {
    color: #FFD700;
    font-size: var(--text-base);
}

.quote-icon {
    font-size: var(--text-3xl);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    opacity: 0.3;
}

.testimonial-content p {
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-info h4 {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.author-info p {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin: 0;
}

/* ======================================
   最终CTA样式
   ====================================== */

.cta-section {
    padding: var(--space-24) 0;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    color: var(--text-white);
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 70%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: var(--text-5xl);
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: var(--space-6);
    line-height: var(--leading-tight);
}

@media (min-width: 640px) {
    .cta-content h2 {
        font-size: var(--text-6xl);
    }
}

.cta-content p {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-12);
    line-height: var(--leading-relaxed);
}

.cta-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-12);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 640px) {
    .cta-stats {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

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

.stat-number {
    font-size: var(--text-4xl);
    font-weight: 900;
    color: var(--text-white);
    display: block;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.8);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
    margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

.cta-guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.8);
}

.cta-guarantee i {
    color: rgba(255, 255, 255, 0.6);
}

#floatingDataContainer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}