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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: #333;
  background: #fff;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* ========== Section Header ========== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: #1a2e1a;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: #666;
}

.section-header.light h2 { color: #fff; }
.section-header.light p { color: rgba(255,255,255,0.8); }

/* ========== Buttons ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #16a34a, #22c55e);
  color: #fff;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 16px rgba(34,197,94,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(34,197,94,0.4);
}

.btn-primary.btn-sm {
  padding: 10px 24px;
  font-size: 14px;
}

.btn-primary.btn-lg {
  padding: 16px 44px;
  font-size: 18px;
}

.btn-link {
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.3s;
}

.btn-link:hover { color: #fff; }

.btn-outline-green {
  display: inline-flex;
  align-items: center;
  border: 2px solid #16a34a;
  color: #16a34a;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s;
  background: transparent;
}

.btn-outline-green:hover {
  background: #16a34a;
  color: #fff;
}

/* ========== Hero Section ========== */
.hero-section {
  background: linear-gradient(135deg, #064e3b 0%, #065f46 30%, #047857 70%, #059669 100%);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
}

.shape-1 {
  width: 500px;
  height: 500px;
  background: #22c55e;
  top: -150px;
  right: -100px;
  filter: blur(80px);
}

.shape-2 {
  width: 400px;
  height: 400px;
  background: #86efac;
  bottom: -100px;
  left: -80px;
  filter: blur(60px);
}

.shape-3 {
  width: 250px;
  height: 250px;
  background: #fbbf24;
  top: 50%;
  left: 50%;
  filter: blur(100px);
}

.hero-content {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-text { flex: 1; }

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  color: #86efac;
  padding: 6px 18px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.1);
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  line-height: 1.15;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  line-height: 1.8;
  max-width: 520px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.hero-tags span {
  background: rgba(255,255,255,0.12);
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.08);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Hero Illustration */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 380px;
}

.hero-illustration {
  position: relative;
  width: 320px;
  height: 320px;
}

.recycle-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.circle-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid rgba(134,239,172,0.3);
  animation: spin 12s linear infinite;
}

.circle-ring::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  width: 12px;
  height: 12px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(34,197,94,0.6);
}

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

.circle-icon {
  font-size: 48px;
  z-index: 1;
}

.float-card {
  position: absolute;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 16px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s;
  animation: floatCard 3s ease-in-out infinite;
}

.float-card:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-4px);
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.card-clothes { top: 10px; left: 0; animation-delay: 0s; }
.card-recycle { top: 10px; right: 0; animation-delay: 0.5s; }
.card-reward { bottom: 10px; right: 0; animation-delay: 1s; }
.card-truck { bottom: 10px; left: 0; animation-delay: 1.5s; }

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

/* ========== Stats Section ========== */
.stats-section {
  background: #fff;
  padding: 48px 0;
  border-bottom: 1px solid #f0f0f0;
}

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

.stat-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: #f0fdf4;
  border-radius: 14px;
  border: 1px solid #dcfce7;
  transition: all 0.3s;
}

.stat-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(22,163,74,0.08);
}

.stat-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.stat-info { display: flex; flex-direction: column; }

.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: #16a34a;
  line-height: 1.2;
}

.stat-label {
  font-size: 13px;
  color: #666;
  margin-top: 2px;
}

/* ========== Process Section ========== */
.process-section {
  padding: 80px 0;
  background: #fff;
}

.process-steps {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-item {
  flex: 1;
  text-align: center;
  padding: 32px 20px;
  background: #f0fdf4;
  border-radius: 16px;
  border: 1px solid #dcfce7;
  position: relative;
  transition: all 0.3s;
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(22,163,74,0.1);
  border-color: #86efac;
}

.step-num {
  position: absolute;
  top: 12px;
  left: 16px;
  font-size: 13px;
  font-weight: 700;
  color: #86efac;
}

.step-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: #1a2e1a;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
}

.step-arrow {
  display: none;
}

/* ========== Advantages Section ========== */
.advantages-section {
  padding: 80px 0;
  background: #f9fafb;
}

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

.adv-card {
  background: #fff;
  border-radius: 16px;
  padding: 32px 24px;
  border: 1px solid #e5e7eb;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.adv-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #16a34a, #22c55e);
  opacity: 0;
  transition: opacity 0.3s;
}

.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(22,163,74,0.1);
  border-color: #86efac;
}

.adv-card:hover::after { opacity: 1; }

.adv-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.icon-free { background: linear-gradient(135deg, #dcfce7, #bbf7d0); }
.icon-free::after { content: '🏠'; }
.icon-ai { background: linear-gradient(135deg, #e0f2fe, #bae6fd); }
.icon-ai::after { content: '🤖'; }
.icon-trace { background: linear-gradient(135deg, #f3e8ff, #e9d5ff); }
.icon-trace::after { content: '🔗'; }
.icon-reward { background: linear-gradient(135deg, #fef3c7, #fde68a); }
.icon-reward::after { content: '🎁'; }
.icon-eco { background: linear-gradient(135deg, #d1fae5, #a7f3d0); }
.icon-eco::after { content: '🌱'; }
.icon-safe { background: linear-gradient(135deg, #fee2e2, #fecaca); }
.icon-safe::after { content: '🔒'; }

.adv-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #1a2e1a;
  margin-bottom: 8px;
}

.adv-card p {
  font-size: 14px;
  color: #888;
  line-height: 1.7;
}

/* ========== Category Section ========== */
.category-section {
  padding: 80px 0;
  background: #fff;
}

.cat-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}

.cat-tab {
  padding: 10px 28px;
  border: none;
  background: #f3f4f6;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 500;
  color: #666;
  cursor: pointer;
  transition: all 0.3s;
}

.cat-tab:hover { color: #16a34a; background: #f0fdf4; }

.cat-tab.active {
  background: #16a34a;
  color: #fff;
  box-shadow: 0 4px 16px rgba(22,163,74,0.3);
}

.cat-panel {
  display: none;
  animation: fadeUp 0.4s ease;
}

.cat-panel.active { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.cat-layout {
  display: flex;
  gap: 40px;
}

.cat-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cat-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: #f9fafb;
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  transition: all 0.3s;
}

.cat-item:hover {
  background: #f0fdf4;
  border-color: #86efac;
  transform: translateX(4px);
}

.ci-icon {
  font-size: 32px;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 12px;
}

.ci-info h4 {
  font-size: 16px;
  font-weight: 700;
  color: #1a2e1a;
  margin-bottom: 4px;
}

.ci-info p {
  font-size: 13px;
  color: #888;
  line-height: 1.5;
  margin-bottom: 6px;
}

.ci-price {
  display: inline-block;
  background: #f0fdf4;
  color: #16a34a;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.cat-visual {
  flex: 0 0 320px;
}

.cat-preview {
  position: sticky;
  top: 24px;
}

.preview-box {
  border-radius: 20px;
  padding: 32px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
}

.clothes-preview { background: linear-gradient(135deg, #dcfce7, #bbf7d0); }
.shoes-preview { background: linear-gradient(135deg, #e0f2fe, #bae6fd); }
.bags-preview { background: linear-gradient(135deg, #fef3c7, #fde68a); }
.home-preview { background: linear-gradient(135deg, #fce7f3, #fbcfe8); }
.acc-preview { background: linear-gradient(135deg, #f3e8ff, #e9d5ff); }

.preview-label {
  font-size: 20px;
  font-weight: 700;
  color: #1a2e1a;
  margin-bottom: 20px;
}

.preview-items {
  display: flex;
  gap: 12px;
}

.preview-item {
  width: 60px;
  height: 70px;
  background: rgba(255,255,255,0.6);
  border-radius: 10px;
  border: 2px dashed rgba(0,0,0,0.08);
}

.cat-tip {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 13px;
  color: #92400e;
  line-height: 1.6;
}

/* ========== Service Section ========== */
.service-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #064e3b, #065f46, #047857);
}

.svc-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}

.svc-tab {
  padding: 10px 28px;
  border: none;
  background: rgba(255,255,255,0.1);
  border-radius: 24px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  cursor: pointer;
  transition: all 0.3s;
}

.svc-tab:hover { color: #fff; background: rgba(255,255,255,0.18); }

.svc-tab.active {
  background: #22c55e;
  color: #fff;
  box-shadow: 0 4px 16px rgba(34,197,94,0.4);
}

.svc-panel {
  display: none;
  animation: fadeUp 0.4s ease;
}

.svc-panel.active { display: block; }

.svc-layout {
  display: flex;
  gap: 48px;
  align-items: center;
}

.svc-feature { flex: 1; }

.svc-feature h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
}

.svc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.svc-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: rgba(255,255,255,0.85);
}

.svc-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: #22c55e;
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  flex-shrink: 0;
}

.svc-visual {
  flex: 0 0 300px;
}

.svc-card-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stack-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.3s;
}

.stack-card:hover {
  background: rgba(255,255,255,0.14);
  transform: translateX(4px);
}

.sc-avatar {
  font-size: 32px;
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sc-name {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.sc-desc {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  margin-top: 2px;
}

.sc-badge {
  margin-left: auto;
  background: rgba(34,197,94,0.2);
  color: #86efac;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ========== Eco Section ========== */
.eco-section {
  padding: 80px 0;
  background: #fff;
}

.eco-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.eco-card {
  text-align: center;
  padding: 32px 20px;
  background: #f0fdf4;
  border-radius: 16px;
  border: 1px solid #dcfce7;
  transition: all 0.3s;
}

.eco-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(22,163,74,0.1);
}

.eco-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.eco-data {
  font-size: 18px;
  font-weight: 700;
  color: #16a34a;
  margin-bottom: 8px;
}

.eco-card p {
  font-size: 13px;
  color: #888;
  line-height: 1.6;
}

/* ========== Destination Section ========== */
.destination-section {
  padding: 80px 0;
  background: #f9fafb;
}

.dest-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.dest-node {
  text-align: center;
  padding: 28px 20px;
  background: #fff;
  border-radius: 16px;
  border: 1px solid #e5e7eb;
  flex: 1;
  max-width: 220px;
  transition: all 0.3s;
}

.dest-node:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(22,163,74,0.1);
  border-color: #86efac;
}

.dest-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.dest-node h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1a2e1a;
  margin-bottom: 6px;
}

.dest-pct {
  display: inline-block;
  background: #f0fdf4;
  color: #16a34a;
  padding: 2px 12px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.dest-node p {
  font-size: 12px;
  color: #888;
  line-height: 1.6;
}

.dest-arrow {
  font-size: 20px;
  color: #16a34a;
  flex-shrink: 0;
}

/* ========== CTA Section ========== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #064e3b 0%, #047857 100%);
}

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

.cta-content h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.cta-trust {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.cta-trust span {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

/* ========== Floating Bar ========== */
.floating-bar {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 999;
}

.float-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: #fff;
  border-radius: 12px;
  padding: 12px 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  cursor: pointer;
  transition: all 0.3s;
  min-width: 64px;
}

.float-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.15);
}

.fi-icon { font-size: 20px; }

.float-item span {
  font-size: 11px;
  color: #555;
  white-space: nowrap;
  font-weight: 500;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  .hero-subtitle { max-width: 100%; }
  .hero-tags { justify-content: center; }
  .hero-actions { justify-content: center; flex-wrap: wrap; }
  .hero-visual { width: 100%; min-height: 300px; }
  .hero-illustration { width: 260px; height: 260px; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-layout { flex-direction: column; }
  .cat-visual { flex: 0 0 auto; }
  .svc-layout { flex-direction: column; }
  .svc-visual { flex: 0 0 auto; width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .eco-grid { grid-template-columns: repeat(2, 1fr); }
  .dest-flow { flex-wrap: wrap; }
  .dest-arrow { display: none; }
  .dest-node { max-width: 100%; flex-basis: calc(50% - 12px); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 36px; }
  .process-steps { flex-direction: column; }
  .adv-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .eco-grid { grid-template-columns: 1fr; }
  .dest-node { flex-basis: 100%; }
  .cat-tabs, .svc-tabs { flex-wrap: wrap; justify-content: center; }
  .floating-bar { right: 8px; }
  .float-item span { font-size: 10px; }
}