/* ============================================
   easychong 官网样式表
   品牌色：橙色 #FF6B35 / #FFA07A
   ============================================ */

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

:root {
  --primary: #FF6B35;
  --primary-light: #FF8C5A;
  --primary-dark: #E55A2B;
  --primary-bg: #FFF7F2;
  --secondary: #FFA07A;
  --text: #222222;
  --text-secondary: #555555;
  --text-light: #888888;
  --border: #EEEEEE;
  --bg: #FAFAFA;
  --white: #FFFFFF;
  --green: #52C41A;
  --red: #FF4D4F;
  --blue: #2563EB;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-dark);
}

ul {
  list-style: none;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 56px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-title p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #FF6B35, #FFA07A);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
}

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

.nav a {
  padding: 8px 16px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  background: var(--primary-bg);
}

.nav-cta {
  background: var(--primary) !important;
  color: #fff !important;
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  color: #fff !important;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text);
  cursor: pointer;
  padding: 4px;
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, #FF6B35 0%, #FFA07A 60%, #FFF0E8 100%);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -120px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.25);
  border: 1px solid rgba(255,255,255,0.35);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8125rem;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 500;
}

.hero-badge-dot {
  width: 7px;
  height: 7px;
  background: #fff;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary);
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary:hover {
  background: #fff;
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,107,53,0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.18);
  color: #fff;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  border: 1.5px solid rgba(255,255,255,0.35);
  transition: all 0.2s;
  cursor: pointer;
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.28);
  color: #fff;
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.15);
  overflow: hidden;
}

.hero-card-header {
  background: linear-gradient(135deg, #FF6B35, #FFA07A);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-card-header-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

.hero-card-header-tag {
  background: rgba(255,255,255,0.25);
  color: #fff;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

.hero-card-body {
  padding: 20px;
}

.hero-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.hero-stat {
  background: #F8F8F8;
  border-radius: 14px;
  padding: 16px;
}

.hero-stat-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--text-light);
}

.hero-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #F0F0F0;
}

.hero-list-item:last-child {
  border-bottom: none;
}

.hero-list-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.hero-list-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ---------- Pain Points ---------- */
.pain-points {
  background: var(--bg);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.pain-card {
  background: var(--white);
  border-radius: 20px;
  padding: 36px 32px;
  border: 1.5px solid var(--border);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.pain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #FF4D4F, #FF8C5A);
  opacity: 0;
  transition: opacity 0.3s;
}

.pain-card:hover {
  border-color: #FFD0C8;
  box-shadow: 0 8px 32px rgba(255,107,53,0.1);
  transform: translateY(-3px);
}

.pain-card:hover::before {
  opacity: 1;
}

.pain-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: #FFF1F0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 20px;
}

.pain-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.4;
}

.pain-card ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pain-card li {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
  line-height: 1.6;
}

.pain-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FF8C5A;
}

/* ---------- Solutions ---------- */
.solutions {
  background: var(--white);
}

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.solution-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.solution-item:nth-child(even) .solution-visual {
  order: -1;
}

.solution-visual-card {
  background: #F9F9F9;
  border-radius: 20px;
  padding: 32px;
  border: 1.5px solid var(--border);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.visual-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.visual-header-bar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #FF6B35, #FFA07A);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
}

.visual-header-text {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
}

.visual-subtitle {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.visual-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.visual-row {
  background: #fff;
  border-radius: 12px;
  padding: 14px 16px;
  border: 1px solid #F0F0F0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.visual-row-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.visual-row-icon.orange { background: #FFF3E8; }
.visual-row-icon.red { background: #FFF1F0; }
.visual-row-icon.green { background: #F6FFED; }
.visual-row-icon.blue { background: #EFF6FF; }

.visual-row-main {
  flex: 1;
  min-width: 0;
}

.visual-row-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.visual-row-desc {
  font-size: 0.75rem;
  color: var(--text-light);
}

.visual-row-tag {
  font-size: 0.6875rem;
  padding: 3px 10px;
  border-radius: 100px;
  font-weight: 600;
  white-space: nowrap;
}

.visual-row-tag.red { background: #FFF1F0; color: #FF4D4F; }
.visual-row-tag.orange { background: #FFF7E6; color: #D97706; }
.visual-row-tag.green { background: #F6FFED; color: #52C41A; }

.solution-text h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}

.solution-text h3 .num {
  color: var(--primary);
  font-size: 1rem;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}

.solution-text p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.solution-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-bg);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.solution-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
}

/* ---------- Why Easychong ---------- */
.why-section {
  background: linear-gradient(160deg, #FF6B35 0%, #FFA07A 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.why-section::before {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.why-section .section-title h2,
.why-section .section-title p {
  color: #fff;
}

.why-section .section-title p {
  opacity: 0.85;
}

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

.why-card {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: all 0.3s;
}

.why-card:hover {
  background: rgba(255,255,255,0.22);
  transform: translateY(-4px);
}

.why-icon {
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,0.2);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
}

.why-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.why-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
}

/* ---------- CTA ---------- */
.cta-section {
  background: var(--bg);
  text-align: center;
  padding: 100px 0;
}

.cta-section h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.cta-contacts {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.cta-contact {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.125rem;
  color: var(--text);
  font-weight: 600;
}

.cta-contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 16px 40px;
  border-radius: 14px;
  font-size: 1.0625rem;
  font-weight: 700;
  transition: all 0.2s;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.cta-btn:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255,107,53,0.35);
}

/* ---------- Footer ---------- */
.footer {
  background: #1a1a2e;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 14px;
  font-size: 1.375rem;
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

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

/* ---------- Page Header (inner pages) ---------- */
.page-header {
  background: linear-gradient(160deg, #FF6B35 0%, #FFA07A 100%);
  padding: 72px 0 60px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.85);
}

/* ---------- About Page ---------- */
.about-section {
  padding: 80px 0;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
  line-height: 1.3;
}

.about-text p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}

.about-value {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.about-value-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.about-value h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.about-value p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

.about-contact-card {
  background: #F9F9F9;
  border-radius: 20px;
  padding: 40px 36px;
  border: 1.5px solid var(--border);
}

.about-contact-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 28px;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-icon.wechat { background: #F6FFED; }
.contact-icon.phone { background: #FFF3E8; }
.contact-icon.email { background: #EFF6FF; }

.contact-info {
  flex: 1;
}

.contact-info-label {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 2px;
}

.contact-info-value {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text);
}

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    padding: 64px 0 60px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    max-width: 420px;
    margin: 0 auto;
  }

  .section {
    padding: 60px 0;
  }

  .section-title h2 {
    font-size: 1.625rem;
  }

  .pain-grid {
    grid-template-columns: 1fr;
  }

  .solution-item {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .solution-item:nth-child(even) .solution-visual {
    order: 0;
  }

  .why-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .why-card {
    padding: 24px 18px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cta-contacts {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }

  .page-header h1 {
    font-size: 1.875rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .hero-stat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .solution-visual-card {
    padding: 20px;
    min-height: auto;
  }
}