/* ========================================
   随行付流量卡POS - 深豆棕能返风格
   ======================================== */

/* CSS Variables */
:root {
  --vbl-bean: #3A2E1A;
  --vbl-bean-light: #4A3E2A;
  --all-orange: #F97316;
  --all-orange-light: #FB923C;
  --cash-green: #10B981;
  --cash-green-light: #34D399;
  --bg-page: #F5F2EA;
  --bg-white: #FFFFFF;
  --text-dark: #1A1508;
  --text-body: #334155;
  --text-muted: #64748B;
  --border-light: #E2E0D8;
  --shadow-sm: 0 1px 2px rgba(58, 46, 26, 0.05);
  --shadow-md: 0 4px 6px rgba(58, 46, 26, 0.07);
  --shadow-lg: 0 10px 25px rgba(58, 46, 26, 0.1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-cn: 'Noto Sans SC', sans-serif;
  --font-en: 'DM Sans', sans-serif;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

.text-orange {
  color: var(--all-orange);
}

.text-green {
  color: var(--cash-green);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  z-index: 1000;
  transition: var(--transition);
}

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

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--vbl-bean);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--vbl-bean);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
}

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

.nav-links a {
  color: var(--text-body);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--all-orange);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--all-orange);
  transition: var(--transition);
}

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

.nav-cta {
  background: var(--all-orange);
  color: white !important;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--all-orange-light);
  color: white !important;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--vbl-bean);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 20px;
    gap: 20px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-cta {
    width: 100%;
    text-align: center;
  }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  background: linear-gradient(135deg, var(--vbl-bean) 0%, var(--vbl-bean-light) 100%);
  padding: 140px 0 80px;
  color: white;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.15) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
  animation: pulse 10s ease-in-out infinite reverse;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  background: rgba(249, 115, 22, 0.2);
  color: var(--all-orange);
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  color: white;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: var(--font-cn);
}

.btn-primary {
  background: linear-gradient(135deg, var(--all-orange) 0%, var(--all-orange-light) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.5);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--vbl-bean);
}

.btn-green {
  background: linear-gradient(135deg, var(--cash-green) 0%, var(--cash-green-light) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

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

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

.btn-outline:hover {
  background: var(--vbl-bean);
  color: white;
}

/* Page Hero (smaller) */
.page-hero {
  padding: 120px 0 60px;
  text-align: center;
}

.page-hero.orange {
  background: linear-gradient(135deg, var(--all-orange) 0%, var(--all-orange-light) 100%);
  color: white;
}

.page-hero.orange h1,
.page-hero.orange p {
  color: white;
}

.page-hero.green {
  background: linear-gradient(135deg, var(--cash-green) 0%, var(--cash-green-light) 100%);
  color: white;
}

.page-hero.green h1,
.page-hero.green p {
  color: white;
}

.page-hero h1 {
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: 80px 0;
}

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

.section-header h2 {
  margin-bottom: 16px;
}

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

.bg-white {
  background: var(--bg-white);
}

.bg-bean {
  background: linear-gradient(135deg, var(--vbl-bean) 0%, var(--vbl-bean-light) 100%);
  color: white;
}

.bg-bean h2,
.bg-bean h3 {
  color: white;
}

/* ========================================
   Feature Cards
   ======================================== */
.feature-grid {
  display: grid;
  gap: 24px;
}

.feature-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.feature-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.feature-grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 992px) {
  .feature-grid.cols-3,
  .feature-grid.cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .feature-grid.cols-2,
  .feature-grid.cols-3,
  .feature-grid.cols-4 {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 20px;
}

.feature-icon.orange {
  background: rgba(249, 115, 22, 0.1);
  color: var(--all-orange);
}

.feature-icon.green {
  background: rgba(16, 185, 129, 0.1);
  color: var(--cash-green);
}

.feature-icon.bean {
  background: rgba(58, 46, 26, 0.1);
  color: var(--vbl-bean);
}

.feature-card h4 {
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Staggered Cards */
.stagger-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 30px;
  align-items: center;
}

.stagger-grid.reverse {
  grid-template-columns: 1fr 1.3fr;
}

.stagger-grid.reverse .stagger-img {
  order: 2;
}

@media (max-width: 768px) {
  .stagger-grid,
  .stagger-grid.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stagger-grid.reverse .stagger-img {
    order: unset;
  }
}

.stagger-content h3 {
  margin-bottom: 16px;
}

.stagger-content p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

.stagger-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

/* ========================================
   Payment Methods
   ======================================== */
.payment-methods {
  display: grid;
  grid-template-columns: 55% 43%;
  gap: 30px;
}

@media (max-width: 768px) {
  .payment-methods {
    grid-template-columns: 1fr;
  }
}

.payment-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.payment-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
}

.payment-icon.huabei {
  background: linear-gradient(135deg, #FF6B6B, #EE5A5A);
  color: white;
}

.payment-icon.xinyongka {
  background: linear-gradient(135deg, #4A90D9, #357ABD);
  color: white;
}

.payment-icon.saoma {
  background: linear-gradient(135deg, var(--all-orange), var(--all-orange-light));
  color: white;
}

.payment-icon.yunshanfu {
  background: linear-gradient(135deg, var(--cash-green), var(--cash-green-light));
  color: white;
}

.payment-info h4 {
  margin-bottom: 6px;
}

.payment-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.payment-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--vbl-bean);
  font-family: var(--font-en);
  margin-bottom: 4px;
}

/* ========================================
   Cashback Section
   ======================================== */
.cashback-box {
  background: rgba(16, 185, 129, 0.08);
  border: 2px solid var(--cash-green);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.cashback-highlight {
  display: inline-block;
  background: var(--cash-green);
  color: white;
  padding: 12px 30px;
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.cashback-points {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.cashback-point {
  text-align: center;
}

.cashback-point .num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--cash-green);
  font-family: var(--font-en);
}

.cashback-point .label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Tables
   ======================================== */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison-table th,
.comparison-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
  background: var(--vbl-bean);
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
}

.comparison-table th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.comparison-table th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background: rgba(58, 46, 26, 0.02);
}

.comparison-table .highlight {
  background: rgba(249, 115, 22, 0.05);
}

.comparison-table .check {
  color: var(--cash-green);
  font-size: 1.25rem;
}

.comparison-table .cross {
  color: var(--text-muted);
  font-size: 1.25rem;
}

@media (max-width: 768px) {
  .comparison-table {
    font-size: 0.9rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px 16px;
  }
}

/* ========================================
   FAQ
   ======================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--all-orange);
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--text-muted);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--all-orange);
}

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

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-content {
  padding: 0 24px 20px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--vbl-bean) 0%, var(--vbl-bean-light) 100%);
  padding: 80px 0;
  text-align: center;
  color: white;
}

.cta-section h2 {
  color: white;
  margin-bottom: 16px;
}

.cta-section p {
  opacity: 0.9;
  margin-bottom: 30px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .highlight-text {
  color: var(--cash-green);
  font-weight: 700;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: linear-gradient(180deg, var(--vbl-bean) 0%, var(--vbl-bean-light) 100%);
  color: white;
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.footer h4 {
  color: white;
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.footer p {
  opacity: 0.8;
  line-height: 1.8;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
  font-size: 0.9rem;
}

/* ========================================
   Advantage Cards (Asymmetric)
   ======================================== */
.advantage-grid {
  display: grid;
  gap: 24px;
}

.advantage-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.advantage-card.wide {
  grid-column: span 1;
}

.advantage-card.colored {
  background: rgba(249, 115, 22, 0.08);
  border: 2px solid var(--all-orange);
}

.advantage-card h4 {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.advantage-card p {
  color: var(--text-muted);
}

/* ========================================
   Benefits List
   ======================================== */
.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.benefit-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.5rem;
}

.benefit-icon.green {
  background: rgba(16, 185, 129, 0.1);
  color: var(--cash-green);
}

.benefit-content h4 {
  margin-bottom: 6px;
}

.benefit-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }