/* ============================================
   DESIGN SYSTEM: 赏金国际 · 纸雕光影
   Style: 立体纸艺 + 柔和渐变 + 暖色光影
   Color palette: 暖白 #FFF9F0, 珊瑚橙 #FF7A5A, 浅金 #F5D76E, 灰蓝 #A8C8D8
   Accent: 珊瑚橙 + 浅金
   ============================================ */

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #FFF9F0;
  color: #3A2E2A;
}

/* ============================================
   CORE LAYOUT
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section:nth-child(even) {
  background: #FFF5EA;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 249, 240, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 2px solid rgba(255, 122, 90, 0.15);
  box-shadow: 0 4px 20px rgba(255, 122, 90, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: #3A2E2A;
  letter-spacing: 1px;
  position: relative;
}

.logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #FF7A5A, #F5D76E);
  border-radius: 4px;
  transform: scaleX(0.6);
  transform-origin: left;
  transition: transform 0.3s;
}

.logo:hover::after {
  transform: scaleX(1);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #FF7A5A, #F5D76E);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 122, 90, 0.3);
  transform: rotate(-3deg);
  transition: transform 0.3s;
}

.logo:hover .logo-icon {
  transform: rotate(3deg) scale(1.05);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: #5A4A40;
  transition: all 0.25s;
  position: relative;
  padding: 4px 0;
}

.main-nav a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #FF7A5A;
  transition: width 0.3s;
  border-radius: 2px;
}

.main-nav a:hover {
  color: #FF7A5A;
}

.main-nav a:hover::before {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  color: #fff !important;
  font-weight: 700 !important;
  background: linear-gradient(135deg, #FF7A5A, #E86545);
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.35);
  transition: all 0.3s !important;
  letter-spacing: 0.5px;
}

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

.nav-cta:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 24px rgba(255, 122, 90, 0.45);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(255, 122, 90, 0.1);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: rgba(255, 122, 90, 0.2);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #3A2E2A;
  margin: 5px auto;
  border-radius: 2px;
  transition: 0.3s;
}

/* ============================================
   HERO SECTION — 纸雕光影
   ============================================ */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(255, 122, 90, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(245, 215, 110, 0.12) 0%, transparent 50%),
    linear-gradient(180deg, #FFF9F0 0%, #FFF0E0 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 122, 90, 0.08), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 215, 110, 0.1), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 680px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #FF7A5A, #F5D76E);
  color: #fff;
  letter-spacing: 2px;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(255, 122, 90, 0.25);
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: #2A201C;
  font-weight: 800;
  letter-spacing: -0.5px;
  position: relative;
  display: inline-block;
}

.hero h1::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #FF7A5A, #F5D76E);
  border-radius: 4px;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.75;
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.7;
  color: #5A4A40;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: 
    0 20px 60px rgba(255, 122, 90, 0.15),
    0 8px 24px rgba(0,0,0,0.06);
  transform: perspective(800px) rotateY(-4deg) rotateX(2deg);
  transition: transform 0.5s;
  border: 2px solid rgba(255, 122, 90, 0.1);
}

.hero-image:hover {
  transform: perspective(800px) rotateY(-2deg) rotateX(1deg);
}

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

/* ============================================
   BUTTONS — 纸雕立体
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF7A5A, #E86545);
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(255, 122, 90, 0.45);
}

.btn-outline {
  background: transparent;
  border: 2px solid #FF7A5A;
  color: #FF7A5A;
  box-shadow: 0 2px 8px rgba(255, 122, 90, 0.1);
}

.btn-outline:hover {
  background: rgba(255, 122, 90, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.2);
}

/* ============================================
   SECTION LABEL / TITLE
   ============================================ */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: #FF7A5A;
  text-transform: uppercase;
  position: relative;
  padding-left: 28px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
  background: #F5D76E;
  border-radius: 2px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
  color: #2A201C;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 44px;
  line-height: 1.7;
  color: #5A4A40;
}

/* ============================================
   CARDS GRID — 纸雕卡片
   ============================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 20px;
  padding: 32px 28px;
  background: #fff;
  border: 2px solid rgba(255, 122, 90, 0.08);
  transition: all 0.35s;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.04);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF7A5A, #F5D76E);
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 122, 90, 0.12);
  border-color: rgba(255, 122, 90, 0.2);
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  background: linear-gradient(135deg, #FFF0E0, #FFE0C0);
  color: #FF7A5A;
  transition: transform 0.3s;
}

.category-card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF7A5A;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

.card-link::after {
  content: '→';
  transition: transform 0.3s;
}

.card-link:hover {
  gap: 10px;
}

/* ============================================
   FEATURE BLOCK
   ============================================ */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(255, 122, 90, 0.12);
  border: 2px solid rgba(255, 122, 90, 0.06);
  transition: transform 0.4s;
}

.feature-image:hover {
  transform: scale(1.01);
}

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

.feature-text {
  position: relative;
}

.feature-text::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 60px;
  height: 60px;
  background: radial-gradient(circle, rgba(245, 215, 110, 0.2), transparent);
  border-radius: 50%;
  pointer-events: none;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: #4A3A30;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #F5D76E;
  font-size: 1.1rem;
}

/* ============================================
   STATS BAR — 纸雕数字
   ============================================ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: 20px;
  background: #fff;
  border: 2px solid rgba(255, 122, 90, 0.06);
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.04);
  transition: all 0.3s;
  position: relative;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #FF7A5A, transparent);
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(255, 122, 90, 0.1);
}

.stat-item:hover::after {
  opacity: 1;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #FF7A5A;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: #5A4A40;
  font-weight: 500;
}

/* ============================================
   CONTENT WALL
   ============================================ */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
  border: 2px solid rgba(255, 122, 90, 0.06);
  transition: all 0.35s;
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.04);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 122, 90, 0.1);
  border-color: rgba(255, 122, 90, 0.15);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.4s;
}

.content-wall-item:hover img {
  transform: scale(1.03);
}

.content-wall-body {
  padding: 22px 24px 26px;
}

.content-wall-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: #2A201C;
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.65;
  line-height: 1.6;
}

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

.faq-item {
  border: 2px solid rgba(255, 122, 90, 0.08);
  border-radius: 16px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(255, 122, 90, 0.02);
}

.faq-item:hover {
  border-color: rgba(255, 122, 90, 0.2);
  box-shadow: 0 4px 16px rgba(255, 122, 90, 0.06);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2A201C;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: #FF7A5A;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.75;
  line-height: 1.7;
  color: #5A4A40;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ============================================
   CTA BANNER — 纸雕光晕
   ============================================ */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, #FF7A5A, #E86545, #F5D76E);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 122, 90, 0.25);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.08), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  max-width: 500px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF7A5A;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.15);
}

/* ============================================
   FOOTER — 纸雕收尾
   ============================================ */
.site-footer {
  padding: 64px 0 32px;
  background: #2A201C;
  color: rgba(255,255,255,0.8);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF7A5A, #F5D76E, #FF7A5A);
}

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

.footer-brand {
  color: rgba(255,255,255,0.9);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  opacity: 0.65;
  line-height: 1.7;
  font-size: 0.9rem;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
  font-weight: 700;
  position: relative;
  display: inline-block;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 24px;
  height: 2px;
  background: #FF7A5A;
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: #FF7A5A;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
  color: rgba(255,255,255,0.6);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-accent {
  color: #FF7A5A;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  line-height: 1.7;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .main-nav {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
  }
  
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(255, 249, 240, 0.98);
    backdrop-filter: blur(16px);
    padding: 24px 28px;
    border-bottom: 2px solid rgba(255, 122, 90, 0.1);
    gap: 16px;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .section-title {
    font-size: 1.7rem;
  }
  
  .cta-banner {
    padding: 48px 24px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 1.4rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .hero-image {
    transform: none;
  }
  
  .hero-image:hover {
    transform: none;
  }
  
  .cta-banner h2 {
    font-size: 1.5rem;
  }
}