/* ==================================
   春风·官网首页 (Spring Breeze Landing)
   极简、留白、通透、自然
   ================================== */

/* ==================================
   导航栏 - 玻璃态悬浮
   ================================== */
.landing-nav-bar {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: min(900px, calc(100% - 40px));
  height: 64px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
  padding: 0 24px 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 400ms var(--spring-ease);
}
.landing-nav-bar:hover {
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.landing-nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-700);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  transition: all 300ms var(--spring-ease);
}
.landing-nav-links a:hover {
  color: var(--spring-green-hover);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.landing-nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==================================
   Hero - 春日晨光
   ================================== */
.landing-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 160px 0 100px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 10;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--spring-green-hover);
  margin-bottom: 40px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.06);
}
.hero-badge svg { color: var(--spring-green-primary); }

.hero-title {
  font-size: clamp(48px, 8vw, 96px);
  font-family: var(--font-serif);
  font-weight: 900;
  color: var(--ink-900);
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin: 0 0 32px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--spring-green-hover) 0%, #0284C7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--ink-500);
  line-height: 1.8;
  max-width: 60ch;
  margin: 0 0 48px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
.hero-actions .btn { height: 56px; padding: 0 36px; font-size: 16px; border-radius: var(--radius-pill); }
.hero-actions .btn-outline { height: 56px; padding: 0 36px; font-size: 16px; border-radius: var(--radius-pill); }

/* 数据展示如露珠般悬浮 */
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 80px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stat-item {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-xl);
  padding: 24px 32px;
  text-align: center;
  min-width: 200px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.02);
  transition: transform 400ms var(--spring-ease);
}
.hero-stat-item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.8);
}
.hero-stat-item strong {
  display: block;
  font-size: 42px;
  font-weight: 900;
  font-family: var(--font-serif);
  color: var(--ink-900);
  line-height: 1;
}
.hero-stat-item span {
  display: block;
  font-size: 13px;
  color: var(--ink-500);
  margin-top: 8px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ==================================
   通用章节样式
   ================================== */
.section-wrapper {
  padding: 140px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 80px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.section-header .eyebrow {
  margin-bottom: 24px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 56px);
  color: var(--ink-900);
  line-height: 1.2;
  margin: 0 0 24px;
}
.section-desc {
  font-size: 18px;
  color: var(--ink-500);
  line-height: 1.8;
}

/* ==================================
   产品理念 (如一片片树叶散落)
   ================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.feature-leaf {
  background: var(--bg-surface-solid);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: all 400ms var(--spring-ease);
  display: flex;
  flex-direction: column;
}
.feature-leaf:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-leaf-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: var(--spring-sky); /* 淡蓝底色 */
  color: var(--spring-green-hover);
  display: grid;
  place-items: center;
  margin-bottom: 32px;
}
.feature-leaf:nth-child(even) .feature-leaf-icon {
  background: var(--spring-sun); /* 暖阳黄 */
  color: #D97706;
}

.feature-leaf h3 {
  font-size: 24px;
  font-family: var(--font-serif);
  margin-bottom: 16px;
  color: var(--ink-900);
}
.feature-leaf p {
  font-size: 16px;
  color: var(--ink-500);
  line-height: 1.8;
  margin: 0;
  flex: 1;
}

/* 特殊大叶片 */
.feature-leaf.large {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--bg-surface-solid) 0%, var(--spring-green-soft) 100%);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
}
.feature-leaf.large .feature-leaf-icon { background: rgba(255,255,255,0.8); }

/* ==================================
   公开房间 (公开协作现场)
   ================================== */
.rooms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.room-glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: var(--radius-xl);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: all 400ms var(--spring-ease);
  box-shadow: var(--shadow-sm);
}
.room-glass-card:hover {
  background: rgba(255, 255, 255, 0.95);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.room-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.room-card-title {
  font-size: 20px;
  font-family: var(--font-serif);
  font-weight: 900;
  margin: 0;
  line-height: 1.3;
}
.room-card-desc {
  font-size: 15px;
  color: var(--ink-500);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.room-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px dashed var(--border-strong);
}

/* ==================================
   动态区 (清泉般的流动数据)
   ================================== */
.feed-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
}
.feed-pane {
  background: #FFF;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.feed-pane-title {
  font-family: var(--font-serif);
  font-size: 22px;
  margin-bottom: 24px;
  color: var(--ink-900);
}

.feed-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.feed-item:last-child { border-bottom: none; padding-bottom: 0; }
.feed-item:first-child { padding-top: 0; }

.feed-item-text strong {
  display: block;
  font-size: 15px;
  color: var(--ink-900);
  margin-bottom: 4px;
}
.feed-item-text p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-500);
  max-width: 40ch;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==================================
   底部行动号召 (微风吹过)
   ================================== */
.cta-section {
  padding: 160px 0;
  text-align: center;
  position: relative;
}
.cta-box {
  background: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(209,250,229,0.4) 100%);
  padding: 80px 40px;
  border-radius: 40px;
  max-width: 900px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: 48px;
  font-family: var(--font-serif);
  margin-bottom: 32px;
}
.cta-box .btn { height: 64px; padding: 0 48px; font-size: 18px; }

/* 页脚 */
.landing-footer {
  padding: 60px 0;
  text-align: center;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface-solid);
}
.landing-footer p {
  font-size: 14px;
  color: var(--ink-300);
  margin: 0;
  font-family: var(--font-serif);
}

/* 响应式 */
@media (max-width: 1024px) {
  .feature-leaf.large { grid-template-columns: 1fr; gap: 32px; }
  .rooms-grid { grid-template-columns: repeat(2, 1fr); }
  .feed-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .landing-nav-bar { top: 10px; width: calc(100% - 20px); }
  .landing-nav-links { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .rooms-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; flex-direction: column; align-items: stretch; }
  .hero-stat-item { min-width: 0; }
  .cta-box h2 { font-size: 36px; }
}