/* ============================================
   氧气心晴 Oxygen Serenity — 品牌设计系统
   设计语言：阳光 · 高层景观 · 绿植 · 毛绒沙发
   ============================================ */

:root {
  /* 主色调 */
  --cream:        #FDFAF3;
  --cream-dark:   #F5EFE3;
  --white:        #FFFFFF;
  --white-warm:   #FFFEFA;

  /* 绿植系 */
  --sage:         #7A9A7E;
  --sage-light:   #E8F0E9;
  --sage-dark:    #5C7A60;
  --forest:       #3D5A3C;

  /* 木质暖调 */
  --wood:         #C4956A;
  --wood-light:   #E8D5C0;
  --wood-dark:    #A07550;

  /* 阳光金 */
  --sunlight:     #F4D06F;
  --sunlight-light: #FDF3D0;
  --sunlight-pale:  #FFF9EC;

  /* 陶土色（CTA） */
  --terracotta:   #D4957A;
  --terracotta-dark: #B87A62;

  /* 文字 */
  --text-primary:   #3C3C3C;
  --text-secondary: #6B6B6B;
  --text-light:     #9B9B9B;
  --text-on-dark:   #FFFFFF;

  /* 毛绒感 */
  --shadow-soft:    0 2px 16px rgba(61, 90, 60, 0.08);
  --shadow-card:    0 4px 24px rgba(61, 90, 60, 0.06);
  --shadow-hover:   0 8px 32px rgba(61, 90, 60, 0.12);
  --radius-sm:      8px;
  --radius-md:      16px;
  --radius-lg:      24px;
  --radius-xl:      32px;

  /* 字体 */
  --font-display:  'Georgia', 'Noto Serif SC', 'STSong', 'SimSun', serif;
  --font-body:     -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono:     'SF Mono', 'Cascadia Code', 'Consolas', monospace;

  /* 间距 */
  --space-xs:  8px;
  --space-sm:  16px;
  --space-md:  24px;
  --space-lg:  40px;
  --space-xl:  64px;
  --space-2xl: 96px;

  /* 导航高度 */
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--cream);
  line-height: 1.75;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.35;
  color: var(--text-primary);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

a {
  color: var(--sage-dark);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--forest); }

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

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(253, 250, 243, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(61, 90, 60, 0.08);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--forest);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--sage), var(--forest));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: white;
}

.nav-logo-img {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  filter: drop-shadow(0 1px 3px rgba(61, 90, 60, 0.15));
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding: 8px 4px;
  position: relative;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--forest);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--sage);
  transition: width 0.25s ease;
  border-radius: 1px;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--terracotta);
  color: var(--text-on-dark) !important;
  padding: 10px 24px !important;
  border-radius: 50px;
  font-weight: 500;
  transition: all 0.25s ease !important;
  box-shadow: 0 2px 12px rgba(212, 149, 122, 0.3);
}
.nav-cta:hover {
  background: var(--terracotta-dark) !important;
  color: var(--text-on-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(212, 149, 122, 0.4);
}
.nav-cta::after { display: none !important; }

/* Mobile menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
  padding: 8px;
}

/* ============================================
   Hero Section — 阳光高层景观感
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* 高层景观背景 — 用渐变模拟窗外天空与阳光 */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    /* 天空层 */
    linear-gradient(180deg,
      #E8F4F8 0%,
      #F0EAD6 30%,
      #FDFAF3 60%,
      var(--cream) 100%
    );
  z-index: 0;
}

/* 阳光光束模拟 */
.hero-sunbeam {
  position: absolute;
  top: -20%;
  right: 10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse at 50% 0%,
    rgba(244, 208, 111, 0.3) 0%,
    rgba(244, 208, 111, 0.1) 30%,
    transparent 70%
  );
  z-index: 1;
  pointer-events: none;
}

.hero-sunbeam-2 {
  position: absolute;
  top: 10%;
  left: -5%;
  width: 50%;
  height: 60%;
  background: radial-gradient(ellipse at 40% 20%,
    rgba(255, 255, 255, 0.5) 0%,
    transparent 70%
  );
  z-index: 1;
  pointer-events: none;
}

/* 窗框装饰 — 高层玻璃幕墙视觉 */
.hero-window-frame {
  position: absolute;
  top: 15%;
  right: 8%;
  width: 44%;
  height: 55%;
  border: 2px solid rgba(122, 154, 126, 0.15);
  border-radius: 4px;
  z-index: 1;
  pointer-events: none;
  box-shadow: inset 0 0 80px rgba(255, 255, 255, 0.4);
}
.hero-window-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: rgba(122, 154, 126, 0.12);
}
.hero-window-frame::after {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: rgba(122, 154, 126, 0.12);
}

/* 绿植装饰 SVG */
.hero-plants {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 200px;
  z-index: 2;
  pointer-events: none;
  opacity: 0.25;
}

/* 远山轮廓 */
.hero-mountains {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  width: 100%;
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-text {
  padding-right: var(--space-lg);
}

.hero-tagline {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sage-dark);
  background: var(--sage-light);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}
.hero-title em {
  font-style: normal;
  color: var(--sage);
  position: relative;
}
.hero-title em::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 12px;
  background: var(--sunlight-light);
  border-radius: 4px;
  z-index: -1;
  opacity: 0.6;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  max-width: 460px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--terracotta);
  color: var(--text-on-dark);
  box-shadow: 0 4px 16px rgba(212, 149, 122, 0.3);
}
.btn-primary:hover {
  background: var(--terracotta-dark);
  color: var(--text-on-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(212, 149, 122, 0.4);
}

.btn-outline {
  background: var(--white);
  color: var(--sage-dark);
  border: 1.5px solid var(--sage-light);
}
.btn-outline:hover {
  background: var(--sage-light);
  color: var(--forest);
  border-color: var(--sage);
}

/* 右侧视觉区 — 氛围插图 */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 480px;
}

.hero-illustration {
  width: 100%;
  max-width: 520px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(61, 90, 60, 0.12);
}

/* ============================================
   Trust Bar — 数字信任背书
   ============================================ */
.trust-bar {
  background: var(--white-warm);
  border-top: 1px solid var(--cream-dark);
  border-bottom: 1px solid var(--cream-dark);
  padding: var(--space-lg) 0;
}

.trust-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.trust-item {}
.trust-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--sage-dark);
  line-height: 1.2;
}
.trust-label {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ============================================
   Section Common
   ============================================ */
.section {
  padding: var(--space-2xl) 0;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--sage-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.section-title {
  margin-bottom: var(--space-sm);
}

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

/* ============================================
   Services Grid
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.service-card {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  cursor: default;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.service-icon.green  { background: var(--sage-light); color: var(--sage-dark); }
.service-icon.gold   { background: var(--sunlight-light); color: #B8952E; }
.service-icon.wood   { background: var(--wood-light); color: var(--wood-dark); }
.service-icon.terra  { background: #F5E0D8; color: var(--terracotta-dark); }

.service-card h3 {
  margin-bottom: 8px;
  font-size: 1.125rem;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* ============================================
   Counselor Cards
   ============================================ */
.counselor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.counselor-card {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  max-width: 360px;
  margin: 0 auto;
}
.counselor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.counselor-avatar {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: var(--sage);
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.counselor-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 10%;
  display: block;
  transition: transform 0.4s ease;
}
.counselor-card:hover .counselor-avatar img {
  transform: scale(1.03);
}
.counselor-avatar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 12%;
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.15));
  pointer-events: none;
}

.counselor-info {
  padding: var(--space-md);
  background: var(--white-warm);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.counselor-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 2px;
  letter-spacing: 0.02em;
}
.counselor-title {
  font-size: 0.8rem;
  color: var(--sage);
  margin-bottom: 10px;
  font-weight: 500;
}
.counselor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.counselor-tag {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--cream-dark);
  padding: 3px 10px;
  border-radius: 50px;
}

/* ============================================
   Locations
   ============================================ */
.locations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.location-card {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: all 0.3s ease;
  border: 1px solid transparent;
}
.location-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.location-city {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.location-city-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.location-city-dot.hz  { background: #6B8E6F; }
.location-city-dot.sh  { background: #C4956A; }
.location-city-dot.pd  { background: #D4957A; }
.location-city-dot.nj  { background: #7A9CC6; }
.location-city-dot.jh  { background: #C4A35A; }

.location-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  display: block;
}

.location-addr {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ============================================
   CTA Banner
   ============================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--sage-dark), var(--forest));
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-banner h2 {
  color: var(--text-on-dark);
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-sm);
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-md);
}
.cta-banner .btn {
  position: relative;
  z-index: 1;
}
.btn-light {
  background: var(--white);
  color: var(--sage-dark);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}
.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  color: var(--forest);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--white-warm);
  border-top: 1px solid var(--cream-dark);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer-brand .nav-logo {
  margin-bottom: var(--space-sm);
}
.footer-desc {
  font-size: 0.875rem;
  color: var(--text-light);
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
}
.footer-col ul {
  list-style: none;
}
.footer-col li { margin-bottom: 8px; }
.footer-col a {
  font-size: 0.875rem;
  color: var(--text-light);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--sage-dark); }

.footer-bottom {
  max-width: 1200px;
  margin: var(--space-lg) auto 0;
  padding: var(--space-md) var(--space-md) 0;
  border-top: 1px solid var(--cream-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--text-light);
}

/* ============================================
   About Page
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-founder {
  position: relative;
}

.founder-photo {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.founder-photo img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 4/5;
}

.founder-quote-card {
  position: relative;
  margin-top: -40px;
  margin-left: var(--space-md);
  margin-right: var(--space-md);
  background: var(--white-warm);
  border: 1px solid var(--sage-light);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-soft);
}
.founder-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}
.founder-name {
  font-weight: 600;
  color: var(--forest);
  font-size: 0.9rem;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.about-heading {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin: var(--space-sm) 0;
}

.about-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.about-feature-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.about-feature-icon.sage  { background: var(--sage-light); color: var(--sage-dark); }
.about-feature-icon.gold  { background: var(--sunlight-light); color: #B8952E; }
.about-feature-icon.wood  { background: var(--wood-light); color: var(--wood-dark); }
.about-feature-icon.terra { background: #F5E0D8; color: var(--terracotta-dark); }

.about-feature-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
  color: var(--text-primary);
  font-family: var(--font-body);
}
.about-feature-item p {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* Mission / Vision / Values */
.mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.mission-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--cream-dark);
}
.mission-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.mission-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin: 0 auto var(--space-sm);
}
.mission-icon.sage  { background: var(--sage-light); color: var(--sage-dark); }
.mission-icon.gold  { background: var(--sunlight-light); color: #B8952E; }
.mission-icon.terra { background: #F5E0D8; color: var(--terracotta-dark); }

.mission-card h3 {
  margin-bottom: 8px;
  font-size: 1.125rem;
}
.mission-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-section-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: var(--space-md);
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-icon.sage  { background: var(--sage-light); }
.contact-icon.gold  { background: var(--sunlight-light); }
.contact-icon.wood  { background: var(--wood-light); }

.contact-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
  color: var(--text-primary);
  font-family: var(--font-body);
}
.contact-value {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}
.contact-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* Social links */
.social-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.social-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.social-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.social-dot.green { background: #07C160; }
.social-dot.red   { background: #FF2442; }
.social-dot.blue  { background: #0066FF; }

/* Welfare card */
.welfare-card {
  background: var(--white-warm);
  border: 1px solid var(--sage-light);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-lg);
}
.welfare-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--forest);
}

.welfare-content {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.welfare-qr {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--sage-light);
}
.welfare-qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.welfare-list h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
}
.welfare-list ul {
  list-style: none;
}
.welfare-list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.welfare-check {
  color: var(--sage);
  font-weight: 700;
  font-size: 0.8rem;
}

/* FAQ */
.faq-box {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--cream-dark);
}

.faq-item {
  border-bottom: 1px solid var(--cream-dark);
}
.faq-item:last-child {
  border-bottom: none;
}

.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-primary);
  text-align: left;
  font-family: var(--font-body);
  transition: color 0.2s;
}
.faq-toggle:hover {
  color: var(--forest);
}

.faq-arrow {
  font-size: 0.8rem;
  color: var(--sage);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-arrow.open {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer.open {
  max-height: 200px;
  padding-bottom: 14px;
}
.faq-answer p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.7;
}

/* ============================================
   Cases Page
   ============================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.case-card {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.3s ease;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  position: relative;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.case-quote-mark {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: var(--sage);
  opacity: 0.3;
  margin-bottom: -8px;
}

.case-quote {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  flex: 1;
}

.case-author {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--cream-dark);
}

.case-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: white;
  flex-shrink: 0;
}
.case-avatar.sage  { background: var(--sage); }
.case-avatar.gold  { background: var(--wood); }
.case-avatar.terra { background: var(--terracotta); }
.case-avatar.wood  { background: var(--forest); }

.case-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}
.case-tag {
  font-size: 0.75rem;
  color: var(--text-light);
}

/* Method cards */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.method-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.3s ease;
  border: 1px solid var(--cream-dark);
}
.method-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}
.method-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}
.method-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: var(--space-sm);
}
.method-link {
  font-size: 0.88rem;
  color: var(--sage-dark);
  font-weight: 500;
  transition: color 0.2s;
}
.method-link:hover {
  color: var(--forest);
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.stat-item {}

.stat-num {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--sage-dark);
  line-height: 1.2;
}
.stat-unit {
  font-size: 1.2rem;
  color: var(--sage);
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ============================================
   News Page
   ============================================ */
.news-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
  justify-content: center;
}

.news-filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  border: 1.5px solid var(--cream-dark);
  background: var(--white);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-body);
}
.news-filter-btn:hover {
  border-color: var(--sage);
  color: var(--sage-dark);
}
.news-filter-btn.active {
  background: var(--sage);
  border-color: var(--sage);
  color: white;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.news-card {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.news-card-body {
  padding: var(--space-lg);
}

.news-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 10px;
}
.news-tag.company  { background: var(--sage-light); color: var(--sage-dark); }
.news-tag.about    { background: var(--sunlight-light); color: #B8952E; }
.news-tag.product  { background: #F5E0D8; color: var(--terracotta-dark); }
.news-tag.science  { background: var(--wood-light); color: var(--wood-dark); }

.news-meta {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 10px;
}

.news-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-excerpt {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-link {
  font-size: 0.875rem;
  color: var(--sage-dark);
  font-weight: 500;
  transition: color 0.2s;
}
.news-link:hover {
  color: var(--forest);
}

/* ============================================
   Article Page (founderstory, casearticle etc.)
   ============================================ */
.article-body {
  max-width: 760px;
  margin: 0 auto;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.article-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--sage-light);
  color: var(--sage-dark);
}

.article-date,
.article-views {
  font-size: 0.85rem;
  color: var(--text-light);
}

.article-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: var(--space-lg);
  padding-left: var(--space-sm);
  border-left: 3px solid var(--sage);
  font-style: italic;
}

.article-body h2 {
  font-size: 1.5rem;
  color: var(--forest);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.article-body h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.article-body p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: var(--space-md);
}

.article-quote {
  background: var(--sunlight-pale);
  border-left: 4px solid var(--sunlight);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.8;
}

/* Related articles */
.article-related {
  max-width: 760px;
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--cream-dark);
}

.article-related h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.article-related-card {
  background: var(--white-warm);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all 0.3s ease;
  border: 1px solid var(--cream-dark);
  text-decoration: none;
  display: flex;
  flex-direction: column;
}
.article-related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}
.article-related-card h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.article-related-card p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: var(--space-sm);
  flex: 1;
}
.article-related-link {
  font-size: 0.85rem;
  color: var(--sage-dark);
  font-weight: 500;
}

/* ============================================
   Page Header (inner pages)
   ============================================ */
.page-header {
  padding: calc(var(--nav-height) + var(--space-xl)) 0 var(--space-lg);
  background:
    linear-gradient(180deg, #E8F4F8 0%, var(--cream) 100%);
  text-align: center;
}

.page-header .section-title {
  font-size: 2.5rem;
}

/* ============================================
   Course Path — 父母课堂阶梯
   ============================================ */
.course-path {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.course-step {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  padding: 0 0 var(--space-lg) 0;
  text-align: center;
  min-width: 200px;
  max-width: 320px;
  flex: 1;
  transition: all 0.3s;
  border: 1px solid var(--cream-dark);
  position: relative;
  overflow: hidden;
}

.course-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  margin-bottom: var(--space-md);
}

.course-step h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  padding: 0 var(--space-md);
}
.course-step .price {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--terracotta);
  margin-bottom: 8px;
  padding: 0 var(--space-md);
}
.course-step p {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 0;
  padding: 0 var(--space-md);
}
.course-step.featured {
  border-color: var(--sage);
  background: var(--sage-light);
  box-shadow: var(--shadow-soft);
}

.course-arrow {
  font-size: 1.5rem;
  color: var(--sage);
  flex-shrink: 0;
}

/* ============================================
   Encyclopedia Cards
   ============================================ */
.encyclopedia-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.encyclopedia-card {
  background: var(--white-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  gap: var(--space-md);
  transition: all 0.3s ease;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.encyclopedia-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--sage-light);
}

.encyclopedia-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--sage-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
  color: var(--sage-dark);
}

.encyclopedia-content h3 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.encyclopedia-content p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* ============================================
   WeChat Card — 公众号卡片
   ============================================ */
.wechat-card {
  background: linear-gradient(135deg, #F0FAF3 0%, #E8F8EC 100%);
  border: 1.5px solid rgba(7, 193, 96, 0.18);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.3s ease;
  max-width: 240px;
}
.wechat-card:hover {
  box-shadow: 0 4px 20px rgba(7, 193, 96, 0.12);
  transform: translateY(-2px);
}

.wechat-card-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid rgba(7, 193, 96, 0.15);
  background: #fff;
}
.wechat-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.wechat-card-body {
  flex: 1;
  min-width: 0;
}
.wechat-card-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  line-height: 1.3;
}
.wechat-card-desc {
  font-size: 0.75rem;
  color: var(--text-light);
  line-height: 1.4;
}
.wechat-card-hint {
  font-size: 0.7rem;
  color: #07C160;
  margin-top: 4px;
  font-weight: 500;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.875rem; }
  .hero-title { font-size: 2.75rem; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { min-height: 360px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .counselor-grid { grid-template-columns: repeat(2, 1fr); }
  .locations-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .trust-inner { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .mission-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .welfare-content { flex-direction: column; align-items: center; text-align: center; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .article-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: 60px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.625rem; }
  .hero-title { font-size: 2.25rem; }
  .hero-desc { font-size: 1rem; }

  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(253, 250, 243, 0.98);
    backdrop-filter: blur(16px);
    padding: var(--space-md);
    border-bottom: 1px solid var(--cream-dark);
  }

  .hero-inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .hero-text { padding-right: 0; }
  .hero-visual { min-height: 280px; }
  .hero-window-frame { display: none; }

  .services-grid { grid-template-columns: 1fr; }
  .counselor-grid { grid-template-columns: 1fr; }
  .locations-grid { grid-template-columns: 1fr; }
  .encyclopedia-grid { grid-template-columns: 1fr; }
  .trust-inner { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
  .trust-num { font-size: 2rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .course-path { flex-direction: column; }
  .about-grid { grid-template-columns: 1fr; }
  .mission-grid { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .welfare-content { flex-direction: column; align-items: center; text-align: center; }
  .welfare-list { text-align: left; }
  .cases-grid { grid-template-columns: 1fr; }
  .method-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-num { font-size: 2.25rem; }
  .news-grid { grid-template-columns: 1fr; }
  .article-related-grid { grid-template-columns: 1fr; }
  .article-body h2 { font-size: 1.35rem; }

  .section { padding: var(--space-xl) 0; }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeUp 0.6s ease forwards;
}

/* ============================================
   Mobile nav toggle behavior (JS adds .open)
   ============================================ */

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--sage);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s;
  z-index: 999;
  box-shadow: 0 2px 12px rgba(61, 90, 60, 0.25);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--forest);
  transform: translateY(-2px);
}