/* ============================================
   百芳集 · 首页专用样式
   ============================================ */

/* ===== Hero ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  overflow: hidden;
}
.hero-slider {
  position: relative;
  width: 100%;
  height: 100%;
}
.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 100px 80px 60px;
  opacity: 0;
  transition: opacity 1s ease;
  pointer-events: none;
}
.hero-slide.active {
  opacity: 1;
  pointer-events: auto;
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(200,168,75,0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(46,107,74,0.08) 0%, transparent 40%);
  pointer-events: none;
}
.hero-content {
  flex: 1;
  max-width: 600px;
  z-index: 2;
}
.hero-tag {
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 24px;
  font-family: var(--font-serif);
}
.hero-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}
.hero-title-cn {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.hero-title-sub {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  font-weight: 400;
}
.hero-desc {
  font-size: 1rem;
  color: rgba(245,240,232,0.75);
  line-height: 1.9;
  margin-bottom: 40px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-visual {
  flex: 0 0 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}
.hero-circle-outer {
  width: 320px; height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(200,168,75,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: rotateRing 20s linear infinite;
  position: relative;
}
.hero-circle-inner {
  width: 240px; height: 240px;
  border-radius: 50%;
  background: rgba(200,168,75,0.06);
  border: 1px solid rgba(200,168,75,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-logo-large {
  width: 160px; height: 160px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  animation: pulse 3s ease-in-out infinite;
}
@keyframes rotateRing {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50%       { transform: scale(1.05); opacity: 1; }
}
.hero-particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(200,168,75,0.3);
  animation: float 6s ease-in-out infinite;
}
.p1 { width:8px; height:8px; top:20%; left:10%; animation-delay:0s; }
.p2 { width:5px; height:5px; top:60%; left:5%;  animation-delay:1s; }
.p3 { width:6px; height:6px; top:80%; left:20%; animation-delay:2s; }
.p4 { width:4px; height:4px; top:30%; left:90%; animation-delay:0.5s; }
.p5 { width:7px; height:7px; top:70%; left:85%; animation-delay:1.5s; }
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.5; }
  50%       { transform: translateY(-20px) scale(1.2); opacity: 1; }
}
.hero-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.hero-stat-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(200,168,75,0.2);
  padding: 24px;
  text-align: center;
  backdrop-filter: blur(8px);
}
.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-num sup { font-size: 1rem; }
.stat-label {
  display: block;
  font-size: 0.85rem;
  color: rgba(245,240,232,0.7);
  letter-spacing: 0.08em;
}
.hero-gift-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.hero-indicator {
  width: 30px; height: 3px;
  background: rgba(255,255,255,0.3);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  border-radius: 2px;
}
.hero-indicator.active {
  background: var(--accent);
  width: 50px;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  right: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(245,240,232,0.5);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}
.scroll-arrow {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(200,168,75,0.6), transparent);
  animation: scrollDown 1.5s ease-in-out infinite;
}
@keyframes scrollDown {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== Brand Strip ===== */
.brand-strip {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.brand-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.brand-strip-item {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 160px;
}
.bsi-icon { flex-shrink: 0; }
.bsi-text {
  display: flex;
  flex-direction: column;
}
.bsi-text strong {
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 600;
}
.bsi-text span {
  font-size: 0.8rem;
  color: var(--text-mid);
}
.brand-strip-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* ===== Products ===== */
.section-products {
  padding: 100px 0;
  background: var(--bg-cream);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}
.product-card {
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  cursor: pointer;
}
.product-card-img {
  height: 200px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.green-tea-bg  { background: linear-gradient(135deg, #1a4a2a, #2d7a4a); }
.oolong-bg     { background: linear-gradient(135deg, #3a2a10, #7a5a20); }
.puer-bg       { background: linear-gradient(135deg, #2a1a0a, #6a3a15); }
.black-tea-bg  { background: linear-gradient(135deg, #3a1515, #8a3030); }
.product-overlay {
  position: absolute;
  top: 16px; left: 16px;
}
.product-category {
  background: rgba(0,0,0,0.35);
  color: var(--accent);
  font-size: 0.78rem;
  padding: 4px 12px;
  letter-spacing: 0.1em;
  border: 1px solid rgba(200,168,75,0.4);
  border-radius: 2px;
}
.product-tea-icon { opacity: 0.7; }
.product-card-body { padding: 20px; }
.product-brand-mark {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
}
.product-logo {
  height: 22px;
  width: auto;
  object-fit: contain;
}
.product-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}
.product-origin {
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}
.product-desc {
  font-size: 0.85rem;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 14px;
}
.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.ptag {
  font-size: 0.72rem;
  padding: 3px 10px;
  background: rgba(26,58,42,0.07);
  color: var(--secondary);
  border: 1px solid rgba(26,58,42,0.15);
  border-radius: 2px;
  letter-spacing: 0.04em;
}
.product-btn {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--primary);
  border-bottom: 1px solid var(--primary);
  padding-bottom: 2px;
  transition: color var(--transition), border-color var(--transition);
  letter-spacing: 0.06em;
}
.product-btn:hover { color: var(--accent); border-color: var(--accent); }
.products-more { text-align: center; }

/* ===== Stats ===== */
.section-stats {
  padding: 100px 0;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.stats-bg-overlay {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 50%, rgba(46,107,74,0.15) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(200,168,75,0.06) 0%, transparent 40%);
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.stat-card {
  text-align: center;
  padding: 40px 24px;
  border: 1px solid rgba(200,168,75,0.15);
  background: rgba(255,255,255,0.03);
  transition: all var(--transition);
}
.stat-card:hover {
  border-color: rgba(200,168,75,0.4);
  background: rgba(200,168,75,0.05);
  transform: translateY(-4px);
}
.stat-icon { margin-bottom: 20px; display: flex; justify-content: center; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}
.stat-label {
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 0.06em;
}
.stat-desc {
  font-size: 0.82rem;
  color: rgba(245,240,232,0.5);
}

/* ===== Story ===== */
.section-story {
  padding: 100px 0;
  background: #fff;
}
.story-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.story-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}
.story-logo-showcase {
  position: relative;
  width: 280px; height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.story-logo-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--accent);
  animation: rotateRing 15s linear infinite;
}
.ring-outer  { width:280px; height:280px; opacity:0.2; }
.ring-middle { width:220px; height:220px; opacity:0.3; animation-direction: reverse; animation-duration: 10s; }
.ring-inner  { width:160px; height:160px; opacity:0.4; }
.story-logo-img {
  width: 120px; height: 120px;
  object-fit: contain;
  position: relative;
  z-index: 2;
}
.story-trademark-cert {
  width: 100%;
  max-width: 320px;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.cert-header {
  background: var(--primary);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cert-title {
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
}
.cert-body { padding: 16px 20px; }
.cert-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-size: 0.88rem;
}
.cert-row:last-child { border-bottom: none; }
.cert-row span { color: var(--text-mid); }
.cert-row strong { color: var(--text-dark); }
.story-content .section-tag { text-align: left; padding-left: 0; }
.story-content .section-tag::before { display: none; }
.story-text {
  font-size: 0.95rem;
  color: var(--text-mid);
  line-height: 1.9;
  margin-bottom: 16px;
}
.story-values {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}
.story-value-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.svi-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}
.story-value-item strong {
  display: block;
  font-size: 0.95rem;
  color: var(--primary);
  margin-bottom: 2px;
}
.story-value-item span {
  font-size: 0.85rem;
  color: var(--text-mid);
}

/* ===== Knowledge ===== */
.section-knowledge {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.knowledge-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #0f2419 0%, #1a3a2a 40%, #0a1f12 100%);
}
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}
.knowledge-card {
  padding: 36px 28px;
  border: 1px solid rgba(200,168,75,0.15);
  background: rgba(255,255,255,0.03);
  transition: all var(--transition);
}
.knowledge-card:hover {
  border-color: rgba(200,168,75,0.4);
  background: rgba(200,168,75,0.05);
  transform: translateY(-6px);
}
.kc-num {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(200,168,75,0.2);
  line-height: 1;
  margin-bottom: 16px;
}
.kc-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 14px;
  letter-spacing: 0.08em;
}
.kc-text {
  font-size: 0.88rem;
  color: rgba(245,240,232,0.65);
  line-height: 1.85;
}

/* ===== CTA ===== */
.section-cta {
  padding: 80px 0;
  background: var(--bg-cream);
}
.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: 70px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(200,168,75,0.08) 0%, transparent 50%);
}
.cta-logo-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}
.cta-logo {
  height: 50px;
  filter: brightness(0) invert(1);
}
.cta-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--text-light);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
  position: relative;
}
.cta-desc {
  font-size: 1rem;
  color: rgba(245,240,232,0.75);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.8;
  position: relative;
}
.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid    { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1024px) {
  .hero-slide { padding: 100px 40px 60px; }
  .hero-title-cn { font-size: 3rem; }
  .story-layout { grid-template-columns: 1fr; gap: 50px; }
  .story-visual { flex-direction: row; justify-content: center; flex-wrap: wrap; }
}
@media (max-width: 768px) {
  .hero-visual { display: none; }
  .hero-slide { padding: 100px 24px 60px; }
  .hero-title-cn { font-size: 2.4rem; }
  .products-grid { grid-template-columns: 1fr; }
  .stats-grid    { grid-template-columns: 1fr 1fr; }
  .knowledge-grid { grid-template-columns: 1fr; }
  .brand-strip-divider { display: none; }
  .brand-strip-item { flex: 0 0 45%; }
  .cta-box { padding: 50px 24px; }
  .hero-scroll-hint { display: none; }
}