/* ============================================
   轻点打卡 - 官网样式
   设计风格：极简、现代、高级感
   ============================================ */

/* CSS 变量 */
:root {
    /* 主色调 */
    --primary-green: #10B981;
    --primary-green-light: #34D399;
    --primary-green-dark: #059669;
    --primary-blue: #3B82F6;
    --primary-orange: #F59E0B;

    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-hero: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #f0f9ff 100%);
    --gradient-cta: linear-gradient(135deg, #059669 0%, #10B981 50%, #34D399 100%);

    /* 文字颜色 */
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #9CA3AF;
    --text-white: #FFFFFF;

    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;

    /* 边框色 */
    --border-light: #E5E7EB;
    --border-lighter: #F3F4F6;

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* 间距 */
    --section-padding: 100px 0;
    --container-max: 1200px;

    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

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

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

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo {
    width: 36px;
    height: 36px;
}

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

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    outline: none;
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

.btn-md {
    padding: 12px 28px;
    font-size: 16px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 18px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
}

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

.btn-icon {
    width: 18px;
    height: 18px;
}

/* ============================================
   Hero 首屏
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 64px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    max-width: 560px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* 手机模拟器 */
.hero-mockup {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-frame {
    position: relative;
    width: 280px;
    background: #FFFFFF;
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-2xl);
    border: 8px solid #1F2937;
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #1F2937;
    border-radius: 0 0 16px 16px;
    z-index: 10;
}

.phone-screen {
    background: #F9FAFB;
    border-radius: 32px;
    overflow: hidden;
    min-height: 500px;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.phone-shadow {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 40px;
    background: radial-gradient(ellipse, rgba(0, 0, 0, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

/* 滚动提示 */
.hero-scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-tertiary);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--text-tertiary);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(12px);
    }
}

/* ============================================
   通用区块头部
   ============================================ */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary-green);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   核心功能区
   ============================================ */
.features {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-lighter);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 40px;
    height: 40px;
}

.feature-icon-green {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.2) 100%);
}

.feature-icon-blue {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.2) 100%);
}

.feature-icon-orange {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.2) 100%);
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.feature-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   产品优势
   ============================================ */
.advantages {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.advantage-item:hover {
    background: var(--bg-primary);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--primary-green);
}

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

.advantage-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.advantage-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   使用场景
   ============================================ */
.scenarios {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.scenario-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-lighter);
}

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

.scenario-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.scenario-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

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

.scenario-example {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.scenario-example span {
    padding: 8px 16px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary-green);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
}

/* ============================================
   CTA 强引导区
   ============================================ */
.cta {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-cta);
    z-index: -1;
}

.cta-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-bg::after {
    content: '';
    position: absolute;
    bottom: -40%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-desc {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.cta-qrcode {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.cta-qrcode-left {
    text-align: center;
}

.cta-qrcode-right {
    text-align: center;
}

.qrcode-img {
    width: 150px;
    height: 150px;
    border-radius: 16px;
    background: #fff;
    padding: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    margin-bottom: 8px;
}

.cta-search {
    margin-bottom: 40px;
}

.search-box {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 16px 32px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.search-icon {
    width: 20px;
    height: 20px;
    color: var(--text-white);
}

.search-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-white);
    letter-spacing: 1px;
}

.cta-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-white);
    font-size: 15px;
}

.cta-feature svg {
    width: 20px;
    height: 20px;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 30px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-logo {
    width: 44px;
    height: 44px;
}

.footer-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-white);
}

.footer-slogan {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-beian {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-beian a {
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
}

.footer-beian a:hover {
    color: rgba(255, 255, 255, 0.7);
}

.beian-divider {
    color: rgba(255, 255, 255, 0.2);
}

.beian-gongan {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.beian-icon {
    width: 16px;
    height: 16px;
}

/* ============================================
   动画
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-delay-1 {
    transition-delay: 0.1s;
}

.fade-in-delay-2 {
    transition-delay: 0.2s;
}

.fade-in-delay-3 {
    transition-delay: 0.3s;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }

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

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

    .hero-title {
        font-size: 44px;
    }

    .features-grid,
    .advantages-grid,
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 17px;
    }

    .hero-scroll-hint {
        display: none;
    }

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

    .advantage-item {
        flex-direction: column;
        text-align: center;
    }

    .section-title {
        font-size: 28px;
    }

    .section-desc {
        font-size: 16px;
    }

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

    .cta-desc {
        font-size: 17px;
    }

    .footer-content {
        flex-direction: column;
        gap: 30px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 20px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .footer-beian {
        flex-wrap: wrap;
        justify-content: center;
    }

    .phone-frame {
        width: 240px;
    }

    .phone-screen {
        min-height: 420px;
    }
}

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

    .hero-title {
        font-size: 30px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        width: 100%;
    }

    .cta-features {
        flex-direction: column;
        align-items: center;
    }

    .search-box {
        padding: 14px 24px;
    }

    .search-text {
        font-size: 17px;
    }
}