/**
 * 浮游API首页样式 - 高级浅绿色主题
 * 统一配色：主色 #34d399 (浅绿)，深色 #059669，浅色 #d1fae5
 */

:root {
    --primary: #34d399;
    --primary-light: #6ee7b7;
    --primary-lighter: #a7f3d0;
    --primary-lightest: #d1fae5;
    --primary-dark: #10b981;
    --primary-darker: #059669;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --text-light: #9ca3af;
    --bg-light: #f0fdf4;
    --bg-white: #ffffff;
    --border-light: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-primary: 0 4px 14px rgba(52, 211, 153, 0.25);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--bg-white);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
    z-index: 1000;
    padding: 14px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
    text-decoration: none;
}

.logo-icon { font-size: 24px; }

.nav-center {
    display: flex;
    gap: 36px;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.2s ease;
}

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

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

.btn-text {
    background: none;
    border: none;
    color: var(--text-gray);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    padding: 8px 16px;
    transition: color 0.2s ease;
}

.btn-text:hover { color: var(--primary-dark); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    border: none;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

/* Hero 区域 - 浅绿渐变 */
.hero {
    background: linear-gradient(160deg, #ecfdf5 0%, #d1fae5 50%, #a7f3d0 100%);
    padding: 140px 0 100px;
    margin-top: 56px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(52, 211, 153, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content { animation: fadeInUp 0.8s ease-out; }

.hero-title {
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.15;
    letter-spacing: -1px;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-gray);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    margin-bottom: 48px;
}

.btn-hero {
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-darker) 100%);
    color: #ffffff;
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

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

.btn-hero-outline:hover {
    background: var(--primary-dark);
    color: #ffffff;
}

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

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-darker);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-gray);
}

.hero-diagram { animation: fadeInRight 0.8s ease-out; }

.diagram-card {
    background: var(--bg-white);
    padding: 28px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(52, 211, 153, 0.1);
}

.diagram-card h3 {
    font-size: 18px;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.diagram-subtitle {
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 20px;
}

.diagram-flow {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.flow-box {
    padding: 16px;
    border-radius: 10px;
    border: 1px solid var(--border-light);
    background: var(--bg-white);
}

.flow-box.client {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
    border-color: var(--primary-lighter);
}

.flow-box.api {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-color: var(--primary-light);
}

.flow-box h4 {
    font-size: 14px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.flow-box ul {
    list-style: none;
    padding: 0;
}

.flow-box li {
    padding: 3px 0;
    color: var(--text-gray);
    font-size: 13px;
}

.flow-arrow {
    text-align: center;
    color: var(--primary);
    font-weight: 600;
    font-size: 13px;
    padding: 6px;
}

/* 功能区域 */
.features {
    padding: 80px 0;
    background: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 48px;
}

.section-title span {
    color: var(--primary-dark);
}

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

.feature-card {
    background: var(--bg-white);
    padding: 32px 28px;
    border-radius: 16px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-lighter);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: var(--primary-lightest);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.7;
}

/* 价格套餐 */
.pricing {
    padding: 80px 0;
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
}

.pricing-header {
    padding: 24px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-lightest) 0%, #f0fdf4 100%);
}

.pricing-card.featured .pricing-header {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: #ffffff;
}

.pricing-header img {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
}

.pricing-header h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.pricing-body {
    padding: 24px;
}

.pricing-body p {
    color: var(--text-gray);
    font-size: 13px;
    margin-bottom: 16px;
    min-height: 40px;
}

.pricing-price {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 16px;
}

.pricing-price strong {
    font-size: 28px;
    color: var(--primary-dark);
    font-weight: 700;
}

.pricing-price del {
    color: var(--text-light);
    margin-left: 8px;
}

.pricing-btn {
    width: 100%;
    padding: 12px;
    background: var(--bg-light);
    color: var(--primary-dark);
    border: 1px solid var(--primary-lighter);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pricing-btn:hover {
    background: var(--primary-dark);
    color: #ffffff;
    border-color: var(--primary-dark);
}

/* 免费注册福利 */
.free-bonus {
    padding: 80px 0;
    background: var(--bg-white);
}

.bonus-card {
    max-width: 640px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--primary-lightest) 0%, #f0fdf4 100%);
    border-radius: 20px;
    padding: 48px;
    text-align: center;
    border: 1px solid var(--primary-lighter);
    position: relative;
}

.bonus-icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.bonus-content h3 {
    font-size: 26px;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 700;
}

.bonus-highlight {
    color: var(--primary-dark);
    font-size: 32px;
    font-weight: 800;
}

.bonus-content p {
    font-size: 15px;
    color: var(--text-gray);
    margin-bottom: 28px;
}

.btn-bonus {
    padding: 14px 40px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-darker) 100%);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-bonus:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

/* 客户反馈 */
.testimonials {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.testimonial-card {
    background: var(--bg-white);
    padding: 28px;
    border-radius: 14px;
    border: 1px solid var(--border-light);
}

.testimonial-text {
    font-size: 15px;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.7;
    font-style: italic;
}

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

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
}

.author-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

/* CTA 区域 */
.cta {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    text-align: center;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
}

.cta-subtitle {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 28px;
}

.btn-cta {
    padding: 14px 40px;
    background: #ffffff;
    color: var(--primary-dark);
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* 关于我们 */
.about { background-color: var(--bg-white); }

.about-header {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    padding: 80px 0 60px;
    text-align: center;
}

.about-title {
    font-size: 40px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
}

.about-subtitle {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.95);
}

.about-intro {
    padding: 70px 0;
    background-color: var(--bg-white);
}

.about-intro-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 36px;
    text-align: center;
}

.about-intro-content {
    max-width: 860px;
    margin: 0 auto;
}

.about-intro-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 20px;
    text-align: justify;
}

.about-stats {
    padding: 50px 0;
    background-color: var(--bg-light);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-card {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-lighter);
}

.stat-card .stat-number {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 14px;
    color: var(--text-gray);
    font-weight: 500;
}

.about-advantages {
    padding: 70px 0;
    background-color: var(--bg-white);
}

.advantages-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 44px;
    text-align: center;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.advantage-card {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-lighter);
}

.advantage-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    height: 48px;
}

.advantage-icon img {
    height: 48px;
    width: auto;
}

.advantage-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-gray);
    text-align: left;
}

/* 页脚 */
.footer {
    background: #1f2937;
    color: var(--text-light);
    padding: 50px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 36px;
    margin-bottom: 36px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

.footer-desc {
    font-size: 13px;
    line-height: 1.6;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 15px;
    margin-bottom: 14px;
}

.footer-col a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 8px;
    transition: color 0.2s ease;
}

.footer-col a:hover { color: var(--primary); }

.footer-col p {
    font-size: 13px;
    margin-bottom: 6px;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #374151;
    font-size: 13px;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(6px);
    animation: fadeIn 0.25s ease;
}

.modal-content {
    background: var(--bg-white);
    margin: 6% auto;
    padding: 0;
    border-radius: 18px;
    width: 90%;
    max-width: 420px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    animation: slideUp 0.3s ease;
    position: relative;
    overflow: hidden;
}

.modal-close {
    position: absolute;
    right: 14px;
    top: 14px;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--text-light);
    background: #f3f4f6;
    border-radius: 50%;
    cursor: pointer;
    z-index: 100;
    transition: all 0.2s ease;
}

.modal-close:hover {
    color: var(--text-dark);
    background: #e5e7eb;
}

.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
}

.tab-btn {
    flex: 1;
    padding: 18px;
    background: none;
    border: none;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
}

.tab-btn.active {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-dark);
}

.tab-content {
    display: none;
    padding: 28px;
}

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

.auth-tabs-inner { width: 100%; }

.auth-type-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border-light);
}

.auth-type-btn {
    flex: 1;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-light);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.auth-type-btn:hover { color: var(--primary-dark); }

.auth-type-btn.active {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-dark);
}

.auth-type-content { display: none; }
.auth-type-content.active { display: block; }

/* 微信登录样式 */
.wechat-login-container,
.wechat-register-container {
    width: 100%;
    position: relative;
    min-height: 280px;
}

.wechat-qr-corner {
    position: absolute;
    top: 0;
    right: 0;
    width: 110px;
    height: 110px;
    overflow: hidden;
    cursor: pointer;
    z-index: 10;
    border-radius: 0 0 0 14px;
    transition: all 0.3s ease;
}

.wechat-qr-corner:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-md);
}

.qr-code-corner {
    width: 100%;
    height: 100%;
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.qr-code-corner img {
    width: 220px;
    height: 220px;
    position: absolute;
    top: -55px;
    right: -55px;
    object-fit: cover;
    border-radius: 8px;
    opacity: 0.95;
}

.qr-code-placeholder-corner {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    padding: 8px;
}

.qr-icon {
    display: block;
    font-size: 22px;
    margin-bottom: 4px;
}

.qr-text {
    display: block;
    font-size: 10px;
    line-height: 1.2;
    font-weight: 500;
}

.wechat-form-full {
    width: 100%;
    padding-right: 130px;
}

.auth-form { width: 100%; }

.input-with-button {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.input-with-button input { flex: 1; }

.btn-send-code {
    padding: 11px 18px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    min-width: 96px;
}

.btn-send-code:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

.btn-send-code:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    opacity: 0.7;
}

.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-dark);
    font-size: 13px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s ease;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    font-size: 13px;
}

.remember {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-gray);
}

.forgot-link {
    color: var(--primary-dark);
    text-decoration: none;
}

.forgot-link:hover { text-decoration: underline; }

.error-message {
    padding: 10px 14px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: #dc2626;
    font-size: 13px;
    margin-bottom: 14px;
    text-align: center;
}

.btn-submit {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(24px); }
    to { opacity: 1; transform: translateX(0); }
}

/* 悬浮小程序二维码 */
.floating-qrcode {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 180px;
    background: white;
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-light);
}

.floating-qrcode:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.14);
}

.qrcode-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.qrcode-title {
    font-size: 13px;
    font-weight: 600;
}

.qrcode-close {
    background: none;
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
}

.qrcode-close:hover { background: rgba(255, 255, 255, 0.2); }

.qrcode-content {
    padding: 14px;
    text-align: center;
}

.qrcode-image {
    width: 140px;
    height: 140px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    margin-bottom: 8px;
}

.qrcode-text {
    font-size: 11px;
    color: var(--text-gray);
    margin: 0;
    font-weight: 500;
}

.floating-qrcode.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; }
    .features-grid, .pricing-grid, .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid, .advantages-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-center { display: none; }
    .hero { padding: 120px 0 80px; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 15px; }
    .hero-buttons { flex-direction: column; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .features-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 26px; }
    .stats-grid, .advantages-grid { grid-template-columns: 1fr; gap: 16px; }
    .about-title { font-size: 32px; }
    .about-intro-title, .advantages-title { font-size: 24px; }
    .bonus-card { padding: 32px 24px; }
    .bonus-content h3 { font-size: 22px; }
    .bonus-highlight { font-size: 26px; }
    .floating-qrcode { bottom: 14px; right: 14px; width: 160px; }
    .qrcode-image { width: 120px; height: 120px; }
    .wechat-qr-corner {
        position: relative;
        width: 100%;
        height: 180px;
        margin-bottom: 16px;
        border-radius: 8px;
    }
    .qr-code-corner img {
        width: 180px;
        height: 180px;
        top: 0;
        right: 0;
        position: relative;
    }
    .wechat-form-full { padding-right: 0; }
}


/* FAQ 常见问题区域 */
.faq {
  padding: 80px 0;
  background: #f8fafc;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.faq-item[open] {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: #3b82f6;
  font-weight: 700;
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: '−';
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: #64748b;
}

@media (max-width: 768px) {
  .faq {
    padding: 48px 0;
  }
  .faq-question {
    padding: 16px 20px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 0 20px 16px;
    font-size: 14px;
  }
}