/* ========================================
   金率格练字培训官网 - 主样式表
   ======================================== */

/* CSS变量 - 颜色系统 */
:root {
    /* 主色调 */
    --primary-green: #0FB93C;
    --primary-lime: #B9E119;
    
    /* 辅助配色 */
    --accent-orange: #F58700;
    --accent-cyan: #2DD7F5;
    --accent-blue: #0096FF;
    --accent-dark-blue: #0041D2;
    
    /* 中性色 */
    --dark-bg: #1A1A2E;
    --dark-bg-alt: #16213E;
    --light-bg: #F8F9FA;
    --text-dark: #2C3E50;
    --text-light: #FFFFFF;
    --text-muted: #6C757D;
    --border-color: #E9ECEF;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-lime) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-alt) 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-primary: 0 4px 20px rgba(15, 185, 60, 0.3);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
    
    /* 间距 */
    --section-padding: 100px;
    --container-max-width: 1200px;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 40px;
    --font-size-5xl: 48px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fff;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

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

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

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

/* 区块间距 */
.section-padding {
    padding: var(--section-padding) 0;
}

.bg-light {
    background-color: var(--light-bg);
}

.bg-dark {
    background-color: var(--dark-bg);
    color: var(--text-light);
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light {
    color: var(--text-light);
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-primary);
    color: var(--text-light);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.section-header.light .section-title {
    color: var(--text-light);
}

.section-desc {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light .section-desc {
    color: rgba(255,255,255,0.7);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: var(--shadow-primary);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(15, 185, 60, 0.5);
}

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

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

.btn-outline:hover {
    background: var(--primary-green);
    color: var(--text-light);
}

.btn-senior {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
    color: var(--text-light);
    box-shadow: 0 4px 20px rgba(0, 65, 210, 0.3);
}

.btn-senior:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 65, 210, 0.4);
}

.btn-lg {
    padding: 16px 36px;
    font-size: var(--font-size-lg);
}

.btn-block {
    width: 100%;
}

/* ========================================
   导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-green);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-green);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition-base);
}

/* ========================================
   Hero 首屏
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fff9 0%, #fff 50%, #f0fff4 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-lime);
    top: -200px;
    right: -100px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--primary-green);
    bottom: -100px;
    left: -100px;
    opacity: 0.3;
}

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

.hero-text {
    animation: fadeInLeft 1s ease;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(15, 185, 60, 0.1);
    border: 1px solid var(--primary-green);
    border-radius: var(--radius-full);
    color: var(--primary-green);
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.title-main {
    display: block;
    color: var(--text-dark);
}

.title-sub {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: var(--font-size-xl);
    color: var(--text-muted);
    margin-bottom: 12px;
}

.hero-slogan {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--primary-green);
}

.stat-unit {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-green);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.card-1 {
    top: 35%;
    right: 0;
    animation-delay: 0s;
}

.card-2 {
    bottom: 15%;
    left: 0;
    animation-delay: 1.5s;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

/* ========================================
   为什么选择金率格
   ======================================== */
.why-us {
    background: linear-gradient(135deg, #f8fff9 0%, #fff 50%, #f5f9ff 100%);
}

.why-us-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.why-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    text-align: center;
    border-top: 3px solid transparent;
}

.why-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--primary-green);
}

.why-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
    font-size: var(--font-size-2xl);
}

.why-card h4 {
    font-size: var(--font-size-xl);
    margin-bottom: 12px;
    color: var(--text-dark);
}

.why-card p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.7;
}

.why-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 40px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.why-stat-item {
    text-align: center;
}

.why-stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.why-stat-unit {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-green);
}

.why-stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: 4px;
}

/* ========================================
   关于品牌
   ======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
}

.about-image:hover img {
    transform: scale(1.02);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--gradient-primary);
    color: white;
    padding: 24px 32px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.exp-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
}

.exp-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.about-text h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: 20px;
    color: var(--text-dark);
}

.about-intro {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(15, 185, 60, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 4px;
}

.feature-text p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   我们为谁服务 - 用户视角
   ======================================== */
.dual-market {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 60px;
}

.market-block {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

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

.market-header {
    padding: 35px 30px;
    text-align: center;
    position: relative;
}

.youth-market .market-header {
    background: linear-gradient(135deg, rgba(15, 185, 60, 0.08) 0%, rgba(185, 225, 25, 0.08) 100%);
}

.senior-market .market-header {
    background: linear-gradient(135deg, rgba(0, 65, 210, 0.08) 0%, rgba(0, 150, 255, 0.08) 100%);
}

.market-icon {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: var(--font-size-2xl);
    color: white;
}

.market-icon.youth {
    background: var(--gradient-primary);
    box-shadow: 0 8px 24px rgba(15, 185, 60, 0.3);
}

.market-icon.senior {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
    box-shadow: 0 8px 24px rgba(0, 65, 210, 0.3);
}

.market-header h3 {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    font-weight: 600;
}

.market-body {
    padding: 30px;
}

.market-body h4 {
    font-size: var(--font-size-base);
    color: var(--text-muted);
    margin-bottom: 20px;
    font-weight: 500;
}

/* 用户痛点 */
.pain-points {
    margin-bottom: 25px;
}

.pain-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #fff5f5;
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    border-left: 3px solid #ff6b6b;
}

.pain-item i {
    color: #ff6b6b;
    font-size: var(--font-size-lg);
}

.pain-item p {
    color: #c92a2a;
    font-size: var(--font-size-sm);
    margin: 0;
}

.senior-market .pain-item {
    background: #f8f9fa;
    border-left-color: var(--accent-blue);
}

.senior-market .pain-item i {
    color: var(--accent-blue);
}

.senior-market .pain-item p {
    color: var(--text-dark);
}

/* 解决方案 */
.solution-box {
    background: linear-gradient(135deg, rgba(15, 185, 60, 0.05) 0%, rgba(185, 225, 25, 0.05) 100%);
    border: 1px solid rgba(15, 185, 60, 0.2);
    border-radius: var(--radius-md);
    padding: 20px;
}

.solution-box.senior {
    background: linear-gradient(135deg, rgba(0, 65, 210, 0.05) 0%, rgba(0, 150, 255, 0.05) 100%);
    border-color: rgba(0, 65, 210, 0.2);
}

.solution-box h5 {
    font-size: var(--font-size-base);
    color: var(--primary-green);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.solution-box.senior h5 {
    color: var(--accent-dark-blue);
}

.solution-box h5 i {
    color: var(--accent-orange);
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.solution-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: var(--font-size-sm);
    color: var(--text-dark);
    line-height: 1.5;
}

.solution-list li i {
    color: var(--primary-green);
    margin-top: 2px;
    flex-shrink: 0;
}

.solution-box.senior .solution-list li i {
    color: var(--accent-dark-blue);
}

.solution-list li strong {
    color: var(--primary-green);
}

.solution-box.senior .solution-list li strong {
    color: var(--accent-dark-blue);
}

/* 温暖引言 */
.warm-quote {
    background: white;
    padding: 50px 60px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    border-left: 4px solid var(--accent-orange);
}

.quote-icon {
    font-size: 48px;
    color: rgba(245, 135, 0, 0.2);
    position: absolute;
    top: 20px;
    left: 30px;
}

.quote-text {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.quote-author {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.synergy-item h4 {
    font-size: var(--font-size-base);
    margin-bottom: 8px;
    color: var(--text-dark);
}

.synergy-item p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   市场分析
   ======================================== */
.policy-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 60px;
}

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

.policy-text {
    padding: 40px;
}

.policy-text h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: 16px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

.policy-text h3 i {
    color: var(--primary-green);
}

.policy-text p {
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.8;
}

.policy-highlight {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.highlight-item {
    padding: 8px 16px;
    background: rgba(15, 185, 60, 0.1);
    color: var(--primary-green);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

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

.market-card {
    background: white;
    padding: 32px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.market-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: var(--font-size-2xl);
}

.market-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 12px;
}

.market-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary-green);
    margin-bottom: 8px;
}

.market-number span {
    font-size: var(--font-size-lg);
}

.market-card p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   核心技术原理
   ======================================== */
.tech-core {
    background: linear-gradient(135deg, #f8fff9 0%, #fff 50%, #f0f4ff 100%);
}

.tech-content {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.tech-intro {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 50px;
    align-items: center;
    background: white;
    padding: 50px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.tech-text h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: 20px;
    color: var(--text-dark);
}

.tech-text p {
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

.tech-text strong {
    color: var(--primary-green);
}

.tech-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.golden-ratio {
    width: 200px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-primary);
    animation: pulse 3s ease infinite;
}

.ratio-number {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
}

.ratio-label {
    font-size: var(--font-size-sm);
    margin-top: 8px;
    opacity: 0.9;
}

.rules-section {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.rules-section h4 {
    text-align: center;
    font-size: var(--font-size-xl);
    margin-bottom: 30px;
    color: var(--text-dark);
}

.rules-section h4 i {
    color: var(--accent-orange);
    margin-right: 8px;
}

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

.rule-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.rule-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    background: var(--gradient-primary);
    color: white;
}

.rule-card:hover h5,
.rule-card:hover p {
    color: white;
}

.rule-icon {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--primary-green);
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-sm);
}

.rule-card:hover .rule-icon {
    background: rgba(255,255,255,0.9);
}

.rule-card h5 {
    font-size: var(--font-size-lg);
    margin-bottom: 8px;
    color: var(--text-dark);
}

.rule-card p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.6;
}

.tech-highlight {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.highlight-box {
    background: white;
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--primary-green);
    transition: var(--transition-base);
}

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

.highlight-box i {
    width: 60px;
    height: 60px;
    background: rgba(15, 185, 60, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--primary-green);
    font-size: var(--font-size-xl);
}

.highlight-box h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 8px;
}

.highlight-box p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   八大优势
   ======================================== */
.advantages {
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.advantage-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.advantage-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px);
}

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

.adv-number {
    position: absolute;
    top: 16px;
    left: 16px;
    font-size: var(--font-size-xs);
    color: rgba(255,255,255,0.3);
    font-weight: 700;
}

.adv-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: var(--font-size-xl);
}

.advantage-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 12px;
    color: white;
}

.advantage-card p {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.7);
}

/* ========================================
   课程体系 - 双市场
   ======================================== */
.course-market-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.market-tab-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 40px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-base);
}

.market-tab-btn i {
    font-size: var(--font-size-xl);
}

.market-tab-btn:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
}

.market-tab-btn.active[data-market="youth"] {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-primary);
}

.market-tab-btn.active[data-market="senior"] {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 20px rgba(0, 65, 210, 0.3);
}

.market-course-content {
    display: none;
}

.market-course-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.courses-intro {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px;
    background: rgba(15, 185, 60, 0.05);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-green);
}

.courses-intro.senior {
    background: rgba(0, 65, 210, 0.05);
    border-left-color: var(--accent-dark-blue);
}

.courses-intro h3 {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    margin-bottom: 12px;
}

.courses-intro h3 i {
    color: var(--primary-green);
    margin-right: 8px;
}

.courses-intro.senior h3 i {
    color: var(--accent-dark-blue);
}

.courses-intro p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.course-levels {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.level-card {
    background: white;
    padding: 30px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    border-top: 3px solid transparent;
}

.level-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    border-top-color: var(--primary-green);
}

.course-levels.senior .level-card:hover {
    border-top-color: var(--accent-dark-blue);
}

.course-levels.senior .level-card:hover {
    border-top-color: var(--accent-dark-blue);
}

.level-card.hot::after {
    content: '热门';
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent-orange);
    color: white;
    font-size: var(--font-size-xs);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.level-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: 16px;
}

.level-badge.soft {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
}

.level-icon {
    width: 60px;
    height: 60px;
    background: rgba(15, 185, 60, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--primary-green);
    font-size: var(--font-size-xl);
}

.course-levels.senior .level-icon {
    background: rgba(0, 65, 210, 0.1);
    color: var(--accent-dark-blue);
}

.level-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 4px;
}

.level-age {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: 12px;
}

.level-card > p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.6;
}

.level-features {
    text-align: left;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.level-features li {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: 6px;
    padding-left: 12px;
    position: relative;
}

.level-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-green);
}

.course-levels.senior .level-features li::before {
    color: var(--accent-dark-blue);
}

.methodology {
    background: white;
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.methodology h4 {
    text-align: center;
    font-size: var(--font-size-xl);
    margin-bottom: 30px;
    color: var(--text-dark);
}

.methodology h4 i {
    color: var(--accent-orange);
    margin-right: 8px;
}

.method-steps {
    display: flex;
    justify-content: space-around;
    gap: 20px;
}

.method-step {
    text-align: center;
    flex: 1;
}

.step-num {
    display: block;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    margin: 0 auto 12px;
}

.method-step h5 {
    font-size: var(--font-size-lg);
    margin-bottom: 4px;
}

.method-step p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.senior-benefits {
    background: white;
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.senior-benefits h4 {
    text-align: center;
    font-size: var(--font-size-xl);
    margin-bottom: 30px;
    color: var(--text-dark);
}

.senior-benefits h4 i {
    color: var(--accent-orange);
    margin-right: 8px;
}

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

.benefit-item {
    text-align: center;
    padding: 24px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.benefit-item:hover {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
    color: white;
}

.benefit-item:hover i,
.benefit-item:hover h5,
.benefit-item:hover p {
    color: white;
}

.benefit-item i {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--accent-dark-blue);
    font-size: var(--font-size-xl);
}

.benefit-item h5 {
    font-size: var(--font-size-base);
    margin-bottom: 8px;
    color: var(--text-dark);
}

.benefit-item p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   课程体系
   ======================================== */
.courses-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-base);
}

.tab-btn i {
    font-size: var(--font-size-lg);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.course-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.course-image {
    height: 100%;
}

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

.course-text {
    padding: 48px;
}

.course-text h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: 20px;
    color: var(--text-dark);
}

.course-text > p {
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.8;
}

.course-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.course-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--font-size-base);
    color: var(--text-dark);
}

.course-features i {
    width: 24px;
    height: 24px;
    background: rgba(15, 185, 60, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
    font-size: var(--font-size-xs);
}

/* ========================================
   产品中心
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: white;
    padding: 40px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.product-image {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: var(--font-size-2xl);
}

.product-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 12px;
}

.product-card p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   加盟支持 - 双市场盈利模型
   ======================================== */
.profit-model {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 60px;
}

.profit-model h3 {
    text-align: center;
    font-size: var(--font-size-2xl);
    margin-bottom: 30px;
    color: var(--text-dark);
}

.profit-model h3 i {
    color: var(--accent-orange);
    margin-right: 8px;
}

.profit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.profit-card {
    background: var(--light-bg);
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.profit-icon {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: var(--font-size-2xl);
}

.profit-icon.youth {
    background: var(--gradient-primary);
    box-shadow: 0 8px 24px rgba(15, 185, 60, 0.3);
}

.profit-icon.senior {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
    box-shadow: 0 8px 24px rgba(0, 65, 210, 0.3);
}

.profit-icon.combined {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #FFD700 100%);
    box-shadow: 0 8px 24px rgba(245, 135, 0, 0.3);
}

.profit-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 16px;
}

.profit-list {
    text-align: left;
    margin-bottom: 20px;
}

.profit-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: 8px;
}

.profit-list i {
    color: var(--primary-green);
}

.profit-highlight {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.profit-highlight.blue {
    background: linear-gradient(135deg, var(--accent-dark-blue) 0%, var(--accent-blue) 100%);
}

.profit-highlight.orange {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #FFD700 100%);
}

/* ========================================
   加盟支持
   ======================================== */
.franchise-content {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.timeline {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: var(--border-color);
}

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

.timeline-year {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0 auto 20px;
    box-shadow: var(--shadow-primary);
}

.timeline-content h4 {
    font-size: var(--font-size-xl);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    max-width: 200px;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.support-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.support-icon {
    width: 60px;
    height: 60px;
    background: rgba(15, 185, 60, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
    font-size: var(--font-size-xl);
    margin-bottom: 20px;
}

.support-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 8px;
}

.support-card p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   合作流程
   ======================================== */
.process-steps {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 60px;
    right: 60px;
    height: 2px;
    background: rgba(255,255,255,0.2);
}

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

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0 auto 16px;
}

.step-icon {
    width: 70px;
    height: 70px;
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: white;
    font-size: var(--font-size-xl);
}

.process-step h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 8px;
    color: white;
}

.process-step p {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.7);
    max-width: 150px;
}

/* ========================================
   联系我们
   ======================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.info-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.info-text h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 4px;
}

.info-text p {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

.contact-qrcode-wrapper {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

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

.contact-qrcode h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: 24px;
    color: var(--text-dark);
}

.qrcode-box {
    width: 200px;
    height: 200px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    border: 2px dashed var(--border-color);
}

.qrcode-box i {
    font-size: 64px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.qrcode-box p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.contact-tips {
    text-align: left;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.contact-tips p {
    color: var(--text-dark);
    margin-bottom: 12px;
    font-size: var(--font-size-base);
}

.contact-tips i {
    color: var(--primary-green);
    margin-right: 8px;
    width: 20px;
}

.contact-tips .tip-text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--border-color);
    text-align: center;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: 80px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand img {
    height: 60px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 24px;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-green);
    transform: translateY(-4px);
}

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

.footer-column h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 20px;
}

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

.footer-column ul li a {
    color: rgba(255,255,255,0.7);
}

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

.footer-column ul li i {
    margin-right: 8px;
    color: var(--primary-green);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: var(--font-size-sm);
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* ========================================
   回到顶部
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
}

/* ========================================
   悬浮咨询按钮
   ======================================== */
.float-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.float-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    box-shadow: var(--shadow-primary);
    transition: var(--transition-base);
}

.float-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 24px rgba(15, 185, 60, 0.4);
}

.float-btn:hover {
    animation: none;
    transform: scale(1.05);
}

/* ========================================
   动画
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@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 pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(15, 185, 60, 0.4);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(15, 185, 60, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(15, 185, 60, 0);
    }
}