/* ============================================
   乌拉ERP 官网样式 - 兼容版本
   兼容 PHP 8.1+ / 所有现代浏览器
   ============================================ */

/* 全局变量 - 使用传统方式定义，避免 :root 兼容问题 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   导航栏样式
   ============================================ */

#mainNav {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    padding: 12px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#mainNav.scrolled {
    padding: 8px 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: #fff;
    padding: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
}

.logo-highlight {
    color: #4caf50;
}

.nav-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: #444;
    text-decoration: none;
    padding: 8px 0;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link.active {
    color: #4caf50;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #4caf50;
    transition: width 0.3s ease;
}

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

.auth-buttons {
    display: flex;
    gap: 12px;
}

.btn-login,
.btn-register {
    padding: 8px 24px;
    border-radius: 30px;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-login {
    background: transparent;
    border: 1.5px solid #4caf50;
    color: #4caf50;
}

.btn-login:hover {
    background: #4caf50;
    color: white;
}

.btn-register {
    background: linear-gradient(135deg, #4caf50, #388e3c);
    border: none;
    color: white;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

/* 导航栏占位符 */
.nav-placeholder {
    height: 80px;
}

/* ============================================
   手机端导航栏
   ============================================ */

.mobile-nav {
    background: white;
    padding: 12px 16px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.mobile-nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.mobile-brand img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.mobile-brand span {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
}

.mobile-menu-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #1a1a1a;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: white;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    padding: 60px 20px 20px;
    transition: right 0.3s ease;
    overflow-y: auto;
}

.mobile-menu.open {
    right: 0;
}

.mobile-nav-list {
    list-style: none;
    padding: 0;
}

.mobile-nav-list li {
    margin-bottom: 16px;
}

.mobile-nav-list a {
    display: block;
    padding: 12px;
    font-size: 16px;
    font-weight: 500;
    color: #444;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav-list a i {
    margin-right: 12px;
    width: 24px;
    color: #4caf50;
}

.mobile-nav-list a:hover {
    background: #f5f5f5;
    color: #4caf50;
}

.mobile-auth {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    display: flex;
    gap: 12px;
}

.btn-mobile-login,
.btn-mobile-register {
    flex: 1;
    text-align: center;
    padding: 12px;
    border-radius: 30px;
    font-weight: 500;
    text-decoration: none;
}

.btn-mobile-login {
    background: transparent;
    border: 1px solid #4caf50;
    color: #4caf50;
}

.btn-mobile-register {
    background: #4caf50;
    color: white;
}

/* ============================================
   首页 Banner
   ============================================ */

.hero-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f9ff 0%, #e8f5e9 100%);
    overflow: hidden;
    padding: 60px 0;
}

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

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(76, 175, 80, 0.15);
    border-radius: 30px;
    color: #4caf50;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #1a1a1a;
}

.hero-title .highlight {
    color: #4caf50;
    position: relative;
}

.hero-desc {
    font-size: 18px;
    color: #6c757d;
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 35px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-feature i {
    color: #4caf50;
    font-size: 18px;
}

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

.btn-hero-primary {
    background: linear-gradient(135deg, #4caf50, #388e3c);
    color: white;
    padding: 14px 36px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
    color: white;
}

.btn-hero-secondary {
    background: transparent;
    border: 2px solid #4caf50;
    color: #4caf50;
    padding: 12px 34px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-hero-secondary:hover {
    background: #4caf50;
    color: white;
}

.hero-image {
    position: relative;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ============================================
   平台支持区域 - 重新设计（紧凑型）
   ============================================ */

.platform-section-compact {
    padding: 30px 20px;
    background: #fff;
    border-bottom: 1px solid #f0f0f0;
}

.compact-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    background: linear-gradient(105deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 60px;
    padding: 12px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.03);
    border: 1px solid #eef2f6;
}

.compact-icon {
    background: #e8f5e9;
    width: 48px;
    height: 48px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #4caf50;
}

.compact-content h3 {
    font-size: 1.2rem;
    margin: 0;
    font-weight: 500;
}

.compact-content h3 strong {
    color: #4caf50;
    font-weight: 700;
}

.compact-content p {
    margin: 0;
    font-size: 0.85rem;
    color: #6c757d;
}

.compact-badges {
    display: flex;
    gap: 16px;
}

.compact-badges span {
    font-size: 0.85rem;
    background: #f5f7fa;
    padding: 6px 14px;
    border-radius: 30px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #2c3e50;
}

.compact-badges span i {
    color: #4caf50;
    font-size: 13px;
}

/* ============================================
   功能介绍区域
   ============================================ */

.features-section {
    padding: 80px 20px;
    background: #f8f9fa;
}

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 30px 25px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 32px;
    color: #4caf50;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
}

.feature-card p {
    color: #6c757d;
    font-size: 14px;
    line-height: 1.6;
}

/* ============================================
   价格方案区域
   ============================================ */

.pricing-section {
    padding: 80px 20px;
    background: white;
}

.pricing-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.pricing-card.popular {
    border: 2px solid #4caf50;
    transform: scale(1.02);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #4caf50;
    color: white;
    padding: 4px 20px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-icon {
    font-size: 48px;
    color: #4caf50;
    margin-bottom: 20px;
}

.pricing-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}

.pricing-price {
    margin-bottom: 25px;
}

.price {
    font-size: 48px;
    font-weight: 800;
    color: #4caf50;
}

.price span {
    font-size: 16px;
    font-weight: 400;
    color: #6c757d;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 25px 0;
    text-align: left;
}

.pricing-features li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li i {
    color: #4caf50;
    font-size: 16px;
}

.btn-pricing {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-pricing-primary {
    background: #4caf50;
    color: white;
}

.btn-pricing-primary:hover {
    background: #388e3c;
    color: white;
}

.btn-pricing-outline {
    border: 2px solid #4caf50;
    color: #4caf50;
}

.btn-pricing-outline:hover {
    background: #4caf50;
    color: white;
}

/* ============================================
   数据统计区域
   ============================================ */

.stats-section {
    padding: 60px 20px;
    background: linear-gradient(135deg, #4caf50, #388e3c);
    color: white;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* ============================================
   关于乌拉ERP区域 - 修复左右内边距问题
   ============================================ */

.platform-section {
    padding: 80px 30px;  /* 修复：增加左右内边距30px，内容不再紧贴边缘 */
    background: white;
}

/* 关于区域内的文字样式优化 */
#about.platform-section .section-title {
    margin-bottom: 25px;
}

#about.platform-section p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
}

#about.platform-section .d-flex {
    margin-top: 30px;
    flex-wrap: wrap;
    gap: 40px;
}

#about.platform-section .d-flex h3 {
    font-size: 28px;
    font-weight: 700;
    color: #4caf50;
    margin-bottom: 5px;
}

#about.platform-section .d-flex p {
    font-size: 14px;
    color: #6c757d;
    margin: 0;
}

/* ============================================
   CTA 区域
   ============================================ */

.cta-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f5f9ff, #e8f5e9);
    text-align: center;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 18px;
    color: #6c757d;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-cta {
    background: linear-gradient(135deg, #4caf50, #388e3c);
    color: white;
    padding: 14px 48px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
    color: white;
}

/* ============================================
   底部样式
   ============================================ */

.footer {
    background: #1a1a1a;
    color: #aaa;
    padding: 60px 0 20px;
}

.footer .container {
    padding: 0 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.footer-logo h3 {
    font-size: 20px;
    color: white;
    margin: 0;
}

.footer-logo h3 span {
    color: #4caf50;
}

.footer-desc {
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-contact p {
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-contact i {
    width: 24px;
    color: #4caf50;
}

.footer-links h4 {
    font-size: 18px;
    color: white;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: #aaa;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-links a:hover {
    color: #4caf50;
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-links a:hover {
    background: #4caf50;
    transform: translateY(-3px);
}

.qrcode-wrapper {
    display: flex;
    gap: 20px;
}

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

.qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    margin-bottom: 8px;
}

.qrcode-item p {
    font-size: 12px;
    margin: 0;
}

.footer-bottom {
    padding-top: 30px;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.copyright,
.icp {
    font-size: 12px;
    margin: 0;
}

.icp a {
    color: #aaa;
    text-decoration: none;
}

.icp a:hover {
    color: #4caf50;
}

/* ============================================
   返回顶部 & 悬浮工具栏
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: #4caf50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

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

.back-to-top:hover {
    background: #388e3c;
    transform: translateY(-3px);
}

.fixed-toolbar {
    position: fixed;
    right: 20px;
    bottom: 60px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}

.toolbar-item {
    width: 45px;
    height: 45px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.toolbar-item i {
    font-size: 20px;
    color: #4caf50;
}

.toolbar-item:hover {
    background: #4caf50;
    transform: scale(1.05);
}

.toolbar-item:hover i {
    color: white;
}

.toolbar-popup {
    position: absolute;
    right: 55px;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toolbar-item:hover .toolbar-popup {
    opacity: 1;
    visibility: visible;
}

.toolbar-popup p {
    margin: 0;
    font-size: 14px;
}

.toolbar-popup img {
    width: 150px;
    height: 150px;
    margin-bottom: 5px;
}

/* ============================================
   热销统计数据样式 & VIP风格价格卡片
   ============================================ */

/* 热销统计数据样式 */
.stats-hot {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    position: relative;
    overflow: hidden;
}

.stats-hot:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"%3E%3Cpath fill="rgba(76,175,80,0.05)" fill-opacity="1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"%3E%3C/path%3E%3C/svg%3E') repeat-x bottom;
    pointer-events: none;
}

.stats-header {
    text-align: center;
    margin-bottom: 50px;
}

.stats-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
}

.stats-header p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
}

.stat-item-hot {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item-hot:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    border-color: #4caf50;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: rgba(76, 175, 80, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.stat-icon i {
    font-size: 28px;
    color: #4caf50;
}

.stat-item-hot .stat-number {
    font-size: 42px;
    font-weight: 800;
    color: white;
    margin-bottom: 8px;
}

.stat-item-hot .stat-label {
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 5px;
}

.stat-item-hot .stat-sub {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

/* VIP风格价格卡片 */
.pricing-vip-style {
    background: linear-gradient(180deg, #f8f9fa 0%, #fff 100%);
}

.vip-plan-card {
    background: white;
    border-radius: 24px;
    padding: 35px 25px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    position: relative;
    height: 100%;
}

.vip-plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.vip-plan-popular {
    border: 2px solid #4caf50;
    transform: scale(1.02);
}

.vip-plan-popular:hover {
    transform: scale(1.02) translateY(-8px);
}

.popular-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #4caf50, #388e3c);
    color: white;
    padding: 5px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

.vip-plan-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.vip-plan-icon i {
    font-size: 32px;
    color: #4caf50;
}

.vip-plan-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a1a2e;
}

.vip-plan-price {
    margin-bottom: 25px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 12px;
}

.vip-plan-price .price {
    font-size: 42px;
    font-weight: 800;
    color: #4caf50;
}

.vip-plan-price .price-original {
    font-size: 14px;
    color: #999;
    text-decoration: line-through;
    margin-left: 8px;
}

.vip-plan-price .price-discount {
    display: inline-block;
    background: #ff4d4f;
    color: white;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 20px;
    margin-left: 8px;
}

.vip-plan-features {
    list-style: none;
    padding: 0;
    margin: 25px 0;
    text-align: left;
}

.vip-plan-features li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #555;
}

.vip-plan-features li i {
    color: #4caf50;
    font-size: 16px;
    width: 20px;
}

.btn-vip-plan {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

.btn-vip-primary {
    background: linear-gradient(135deg, #4caf50, #388e3c);
    color: white;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn-vip-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
    color: white;
}

.btn-vip-outline {
    border: 2px solid #4caf50;
    color: #4caf50;
    background: transparent;
}

.btn-vip-outline:hover {
    background: #4caf50;
    color: white;
}

/* ============================================
   响应式样式
   ============================================ */

@media (max-width: 1400px) {
    .vip-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1200px) {
    .nav-list {
        gap: 20px;
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .pricing-card.popular {
        transform: scale(1);
    }
    
    .header-main {
        flex-direction: column;
        align-items: stretch;
    }
    
    .trial-card {
        flex-direction: column;
        text-align: center;
    }
    
    .trial-features {
        justify-content: center;
    }
    
    .stat-item-hot .stat-number {
        font-size: 28px;
    }
    
    .stat-icon {
        width: 45px;
        height: 45px;
    }
    
    .stat-icon i {
        font-size: 22px;
    }
    
    .vip-plan-popular {
        transform: scale(1);
    }
    
    .vip-plan-popular:hover {
        transform: translateY(-8px);
    }
    
    .vip-plan-card h3 {
        font-size: 20px;
    }
    
    .vip-plan-price .price {
        font-size: 32px;
    }

    .compact-wrapper {
        flex-direction: column;
        text-align: center;
        gap: 12px;
        border-radius: 32px;
        padding: 20px;
    }
    
    .compact-badges {
        justify-content: center;
        flex-wrap: wrap;
    }

    /* 关于区域移动端适配 */
    .platform-section {
        padding: 60px 20px;
    }
    
    #about.platform-section .d-flex {
        gap: 25px;
        justify-content: center;
    }
    
    #about.platform-section .d-flex h3 {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding: 40px 20px;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-desc {
        font-size: 16px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-subtitle {
        font-size: 14px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .cta-title {
        font-size: 24px;
    }
    
    .cta-desc {
        font-size: 14px;
    }
    
    .qrcode-wrapper {
        justify-content: center;
    }
    
    .footer {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-contact {
        text-align: left;
    }
    
    .fixed-toolbar {
        right: 10px;
        bottom: 10px;
    }
    
    .toolbar-item {
        width: 40px;
        height: 40px;
    }
    
    .toolbar-item i {
        font-size: 18px;
    }
    
    .vip-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .features-section,
    .pricing-section,
    .stats-section,
    .cta-section {
        padding: 60px 20px;
    }
    
    .platform-section {
        padding: 50px 20px;
    }
}

@media (max-width: 576px) {
    .vip-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-hero-primary,
    .btn-hero-secondary {
        width: 200px;
        text-align: center;
    }

    .compact-badges span {
        font-size: 12px;
        padding: 4px 10px;
    }
    
    .platform-section {
        padding: 40px 16px;
    }
    
    #about.platform-section .d-flex {
        gap: 20px;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .help-search {
        width: 280px;
    }
    
    .help-title {
        font-size: 24px;
    }
    
    .help-subtitle {
        font-size: 13px;
    }
}