/* ========================================
   WeRead Sync Pro - Minimal Landing Page
   ======================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #fafafa;
  --color-text: #1a1a1a;
  --color-text-secondary: #525252;
  --color-text-muted: #737373;
  --color-border: #e5e5e5;
  --color-border-light: #f0f0f0;
  
  --color-primary: #1a1a1a;
  --color-accent: #07c160;
  --color-accent-light: #e6f7ed;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  
  --transition: 0.2s ease;
  
  --container-width: 1100px;
  --section-spacing: 140px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  border-color: var(--color-border-light);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-text);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  transition: var(--transition);
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-cta {
  background: var(--color-text);
  color: white !important;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.nav-cta:hover {
  opacity: 0.85;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  padding: 180px 0 100px;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border-light);
}

.hero .container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: var(--color-accent);
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 40px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: var(--color-text);
  color: white;
}

.btn-primary:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  border-color: var(--color-text);
}

.btn-dark {
  background: #1a1a1a;
  color: white;
  border: 1px solid #1a1a1a;
}

.btn-dark:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-dark-outline {
  background: #1a1a1a;
  color: white;
  border: 1px solid #1a1a1a;
}

.btn-dark-outline:hover {
  opacity: 0.9;
}

.btn-white-outline {
  background: white;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-white-outline:hover {
  border-color: var(--color-text);
}

.btn-lg {
  padding: 16px 32px;
}

.hero-meta {
  display: flex;
  gap: 32px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

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

.hero-meta svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

/* Hero Visual */
.hero-visual {
  position: relative;
}

.browser-frame {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 
    0 0 0 1px rgba(0,0,0,0.02),
    0 20px 50px -10px rgba(0,0,0,0.1);
  overflow: hidden;
}

.browser-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.browser-dots {
  display: flex;
  gap: 6px;
}

.browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.browser-dots span:nth-child(1) { background: #ff5f57; }
.browser-dots span:nth-child(2) { background: #febc2e; }
.browser-dots span:nth-child(3) { background: #28c840; }

.browser-address {
  flex: 1;
  background: var(--color-bg-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
}

.browser-body {
  padding: 32px;
  min-height: 280px;
}

.sync-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.demo-source {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  width: 140px;
}

.demo-logo {
  width: 48px;
  height: 48px;
  background: #07c160;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.demo-logo-img {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
}

.demo-title {
  font-size: 0.9rem;
  font-weight: 600;
}

.demo-subtitle {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.demo-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.demo-arrow svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.demo-targets {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.target-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  object-fit: contain;
}

/* ========================================
   Section Common
   ======================================== */
section {
  padding: var(--section-spacing) 0;
}

.section-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 80px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

/* ========================================
   Features
   ======================================== */
.features {
  background: white;
}

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

.feature-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-text);
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========================================
   Platforms
   ======================================== */
.platforms {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.platform-item {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.platform-item:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.platform-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: var(--radius-sm);
  object-fit: contain;
  transition: var(--transition);
}

.platform-item:hover .platform-icon {
  transform: scale(1.05);
}

.platform-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.platform-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ========================================
   How It Works
   ======================================== */
.how-it-works {
  background: white;
}

.steps {
  display: flex;
  justify-content: center;
  gap: 60px;
}

.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.1rem;
  margin: 0 auto 24px;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========================================
   Download
   ======================================== */
.download {
  padding-bottom: 0;
}

.download-box {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-lg);
  padding: 80px;
  text-align: center;
  border: 1px solid var(--color-border-light);
}

.download-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.download-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.download-buttons-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.download-buttons-row .btn {
  min-width: 180px;
}

.download-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========================================
   FAQ
   ======================================== */
.faq {
  background: white;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 24px 0;
  font-size: 1.05rem;
  font-weight: 500;
  text-align: left;
  transition: var(--transition);
}

.faq-q:hover {
  color: var(--color-text-secondary);
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: var(--transition);
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-a {
  max-height: 1000px;
}

.faq-a p {
  padding-bottom: 24px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border-light);
  padding: 60px 0 40px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  color: var(--color-text-muted);
}

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

.footer-col a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========================================
   Coming Soon Modal
   ======================================== */

.coming-soon-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.coming-soon-modal.active {
  opacity: 1;
  visibility: visible;
}

.coming-soon-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

.coming-soon-content {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 90%;
  max-width: 360px;
  text-align: center;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.coming-soon-modal.active .coming-soon-content {
  transform: scale(1);
}

.coming-soon-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: var(--transition);
}

.coming-soon-close:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

.coming-soon-close svg {
  width: 18px;
  height: 18px;
}

.coming-soon-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-subtle);
  border-radius: 50%;
  color: var(--color-accent);
}

.coming-soon-icon svg {
  width: 32px;
  height: 32px;
}

.coming-soon-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.coming-soon-content p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.coming-soon-content .btn {
  min-width: 120px;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 60px;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-meta {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
    max-width: 480px;
    margin: 0 auto;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .platforms-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-content {
    flex-direction: column;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 24px;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border-light);
  }
  
  .nav-link:last-of-type {
    border-bottom: none;
  }
  
  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }
  
  .hero {
    padding-top: 140px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .steps {
    flex-direction: column;
    align-items: center;
  }
  
  .step {
    max-width: 100%;
  }
  
  .download-box {
    padding: 48px 24px;
  }
  
  .download-buttons-row {
    flex-direction: column;
    align-items: center;
  }
  
  .download-buttons-row .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 32px;
  }
  
  :root {
    --section-spacing: 100px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .sync-demo {
    flex-direction: column;
  }
  
  .demo-targets {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Scroll animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}
/* ========================================
   Navigation - Pro Button
   ======================================== */
.nav-pro {
  background: linear-gradient(135deg, #07c160 0%, #059142 100%);
  color: white !important;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-left: -24px;
}

.nav-pro:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
  background: white;
  border-top: 1px solid var(--color-border-light);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 2px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pricing-card.popular {
  border-color: var(--color-accent);
  background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-bg-subtle) 100%);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: white;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.pricing-header {
  text-align: center;
  margin-bottom: 24px;
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.pricing-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.pricing-price {
  text-align: center;
  margin-bottom: 8px;
}

.price-num {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.price-unit {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.pricing-save {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 24px;
}

.pricing-save strong {
  font-weight: 600;
}

.pricing-features {
  margin-bottom: 24px;
}

.pricing-features li {
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--color-border-light);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: '✓';
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.pricing-features li.disabled {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.pricing-features li.disabled::before {
  content: '×';
  background: var(--color-text-muted);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.pricing-note {
  text-align: center;
  margin-top: 40px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.pricing-note a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.pricing-note a:hover {
  color: #059142;
}

/* ========================================
   Responsive - Pricing
   ======================================== */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  
  .pricing-card {
    padding: 24px;
  }
  
  .price-num {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }
  
  .pricing-card.popular {
    order: -1;
  }
  
  .nav-pro {
    margin-left: 0;
    margin-top: 8px;
  }
}

/* ========================================
   Scroll animation
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}
/* ========================================
   Payment Modal - 支付弹窗
   ======================================== */
.payment-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.payment-modal.active {
  display: flex;
}

.payment-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.payment-modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  padding: 40px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.payment-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: var(--transition);
  background: var(--color-bg-subtle);
}

.payment-modal-close:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.payment-modal-close svg {
  width: 20px;
  height: 20px;
}

.payment-modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.payment-modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.payment-plan-name {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.payment-amount {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.payment-amount span {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.payment-qrcode-container {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 24px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.qrcode-loading {
  text-align: center;
  color: var(--color-text-secondary);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

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

.qrcode-box img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.qrcode-tip {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.qrcode-error {
  text-align: center;
  color: #ef4444;
}

.qrcode-error svg {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
}

.qrcode-error p {
  margin-bottom: 16px;
}

/* 邮箱输入表单样式 */
.email-form {
  padding: 20px 0;
}

.email-form-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  text-align: center;
}

.email-input-group {
  margin-bottom: 20px;
}

.email-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: white;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.email-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(7, 193, 96, 0.1);
}

.email-input.error {
  border-color: #dc2626;
}

.email-error {
  font-size: 0.8rem;
  color: #dc2626;
  margin-top: 8px;
  text-align: left;
}

.hidden {
  display: none !important;
}

.payment-modal-footer {
  border-top: 1px solid var(--color-border-light);
  padding-top: 20px;
}

.payment-order-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.payment-order-info code {
  background: var(--color-bg-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

.order-status {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
}

.order-status.pending {
  background: #fef3c7;
  color: #d97706;
}

.order-status.paid {
  background: #d1fae5;
  color: #059669;
}

.order-status.failed {
  background: #fee2e2;
  color: #dc2626;
}

.payment-notice {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
}