/* ==================== 变量与基础 ==================== */
:root {
  --color-orange: #E67838;
  --color-orange-dark: #D66828;
  --color-orange-light: #FFF3E0;
  --color-gold: #C9973B;
  --color-cream: #FFF9F2;
  --color-bg: #FFFFFF;
  --color-surface: #F7F6F3;
  --color-border: #E8E4DC;
  --color-text: #2D2A26;
  --color-text-soft: #6B645B;
  --color-text-muted: #999;
  --color-white: #FFFFFF;
  --color-purple: #9D7BC7;
  --color-green: #58A970;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --fs-title-xl: 3.5rem;
  --fs-title-lg: 2.25rem;
  --fs-title: 1.75rem;
  --fs-body-lg: 1.125rem;
  --fs-body: 1rem;
  --fs-body-sm: 0.875rem;
  --lh-tight: 1.2;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  --sp-3xl: 72px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--sp-xl); }
.readable { font-size: var(--fs-body-lg); line-height: var(--lh-relaxed); color: var(--color-text-soft); }
.highlight { color: var(--color-orange); font-weight: 700; }

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  border: none;
  font-family: inherit;
  font-size: var(--fs-body);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn-sm { padding: 6px 14px; font-size: var(--fs-body-sm); border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 32px; font-size: var(--fs-body-lg); }
.btn-block { width: 100%; padding: 14px 22px; }
.btn-primary { background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-gold) 100%); color: var(--color-white); box-shadow: 0 4px 12px rgba(230,120,56,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(230,120,56,0.4); }
.btn-outline { background: transparent; border: 2px solid var(--color-orange); color: var(--color-orange); }
.btn-outline:hover { background: var(--color-orange-light); }

/* ==================== 导航栏 ==================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.navbar .container {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}
.logo-img {
  height: 56px;
  width: auto;
  max-height: 72px;
  display: block;
  object-fit: contain;
}
@media (max-width: 768px) {
  .logo-img { height: 40px; }
}
.nav-links {
  display: flex;
  gap: var(--sp-xl);
  list-style: none;
  flex: 1;
}
.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--fs-body-sm);
  position: relative;
  padding: 8px 0;
}
.nav-links a.active { color: var(--color-orange); font-weight: 700; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-gold));
  border-radius: 2px;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}
.nav-phone {
  font-weight: 700;
  color: var(--color-orange);
  font-size: var(--fs-body-sm);
}
.menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--color-text); }

/* ==================== 英雄区 ==================== */
.hero {
  padding: var(--sp-3xl) 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(230,120,56,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(201,151,59,0.08) 0%, transparent 50%),
    linear-gradient(180deg, #FFFBF5 0%, #FFFFFF 100%);
  overflow: hidden;
}
.hero .container { text-align: center; max-width: 880px; }
.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: var(--color-orange-light);
  color: var(--color-orange-dark);
  border-radius: 20px;
  font-weight: 600;
  font-size: var(--fs-body-sm);
  margin-bottom: var(--sp-xl);
}
.hero h1 {
  font-size: var(--fs-title-xl);
  line-height: var(--lh-tight);
  font-weight: 800;
  margin-bottom: var(--sp-xl);
  color: var(--color-text);
}
.hero p.readable { margin-bottom: var(--sp-2xl); }
.hero-buttons {
  display: flex;
  gap: var(--sp-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==================== 统计数据 ==================== */
.statistics {
  padding: var(--sp-2xl) 0;
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-gold) 100%);
  color: var(--color-white);
}
.statistics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
  text-align: center;
}
.stat-card .stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: var(--sp-sm);
}
.stat-card p { opacity: 0.9; font-size: var(--fs-body-lg); }

/* ==================== Section通用 ==================== */
.section { padding: var(--sp-3xl) 0; }
.section-title {
  font-size: var(--fs-title-lg);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--sp-sm);
}
.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--fs-body-lg);
  margin-bottom: var(--sp-2xl);
}
.page-header {
  padding: var(--sp-3xl) 0 var(--sp-2xl);
  text-align: center;
}
.page-header h1 {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: var(--sp-md);
}

/* ==================== 品牌释义 ==================== */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
  max-width: 960px;
  margin: 0 auto;
}
.philosophy-card {
  text-align: center;
  padding: var(--sp-2xl) var(--sp-xl);
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.philosophy-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.philosophy-card .char {
  font-size: 4.5rem;
  font-weight: 700;
  display: block;
  color: var(--color-orange);
  line-height: 1;
  margin-bottom: var(--sp-md);
}
.philosophy-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--sp-sm);
}

/* ==================== 服务卡片 ==================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
}
.service-card {
  display: block;
  padding: var(--sp-2xl);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.service-icon {
  width: 64px;
  height: 64px;
  display: block;
  margin-bottom: var(--sp-lg);
}
.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--sp-sm);
}
.service-card p {
  color: var(--color-text-soft);
  margin-bottom: var(--sp-md);
  line-height: var(--lh-relaxed);
}
.service-link {
  color: var(--color-orange);
  font-weight: 600;
}

/* ==================== 长者故事 ==================== */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}
.story-card {
  background: var(--color-white);
  padding: var(--sp-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.story-avatar {
  font-size: 3rem;
  width: 72px;
  height: 72px;
  background: var(--color-orange-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-lg);
}
.story-card h3 { margin-bottom: 4px; }
.story-tag {
  color: var(--color-orange);
  font-size: var(--fs-body-sm);
  font-weight: 600;
  margin-bottom: var(--sp-md);
}
.story-quote {
  color: var(--color-text-soft);
  line-height: var(--lh-relaxed);
  font-style: italic;
}

/* ==================== CTA ==================== */
.cta-section {
  padding: var(--sp-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-gold) 100%);
  color: var(--color-white);
}
.cta-section .container { max-width: 720px; }
.cta-section h2 {
  font-size: var(--fs-title-lg);
  margin-bottom: var(--sp-md);
}
.cta-section p { color: rgba(255,255,255,0.9); margin-bottom: var(--sp-xl); }
.cta-section .btn-primary {
  background: var(--color-white) !important;
  color: var(--color-orange) !important;
  box-shadow: none;
}
.cta-section .btn-primary:hover { background: #FFF9F2 !important; }

/* ==================== 内容网格 ==================== */
.content-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--sp-2xl);
  align-items: center;
}
.content-text .section-title { text-align: left; margin-bottom: var(--sp-xl); }
.content-text p { margin-bottom: var(--sp-md); }
.content-visual {
  height: 320px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.big-char { font-size: 12rem; font-weight: 700; }

/* ==================== 时间线 ==================== */
.timeline {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 80px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  display: flex;
  gap: var(--sp-xl);
  margin-bottom: var(--sp-2xl);
  position: relative;
}
.timeline-year {
  width: 80px;
  flex-shrink: 0;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-orange);
  position: relative;
  text-align: right;
  padding-right: var(--sp-lg);
}
.timeline-year::after {
  content: '';
  position: absolute;
  right: -10px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-orange);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-orange);
}
.timeline-body {
  background: var(--color-white);
  padding: var(--sp-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  flex: 1;
  margin-left: var(--sp-xl);
}
.timeline-body h3 { margin-bottom: var(--sp-sm); color: var(--color-text); }

/* ==================== 课程 ==================== */
.courses-grid, .travel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}
.course-card, .travel-card {
  background: var(--color-white);
  padding: var(--sp-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.course-card:hover, .travel-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.course-card h3 { margin-bottom: var(--sp-sm); font-size: 1.25rem; }
.course-meta { color: var(--color-orange); font-weight: 600; margin-bottom: var(--sp-md); font-size: var(--fs-body-sm); }
.course-desc { color: var(--color-text-soft); margin-bottom: var(--sp-lg); }
.travel-cover {
  height: 160px;
  border-radius: var(--radius-sm);
  color: #fff;
  display: flex;
  align-items: flex-end;
  padding: var(--sp-md);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--sp-md);
}
.travel-card h3 { margin-bottom: 4px; }
.travel-meta { color: var(--color-orange); font-weight: 700; margin-bottom: var(--sp-md); }

/* ==================== 特色/亮点 ==================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
  margin-bottom: var(--sp-xl);
}
.feature-item {
  text-align: center;
  padding: var(--sp-xl);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.feature-item h3 {
  margin-bottom: var(--sp-sm);
  font-size: 1.1rem;
}
.feature-item p {
  color: var(--color-text-soft);
  font-size: var(--fs-body-sm);
}

/* ==================== 产品 ==================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
}
.product-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-cover {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}
.product-card h3 { padding: var(--sp-md) var(--sp-md) 0; font-size: 1.05rem; }
.product-price {
  padding: 0 var(--sp-md) var(--sp-md);
  color: var(--color-orange);
  font-weight: 800;
  font-size: 1.3rem;
}
.product-price span { font-size: 0.8rem; font-weight: 500; color: var(--color-text-muted); }
.product-card .btn { width: calc(100% - 32px); margin: 0 var(--sp-md) var(--sp-md); }

/* ==================== 资讯 ==================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}
.news-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--sp-xl);
  transition: transform 0.2s ease;
}
.news-card:hover { transform: translateY(-4px); }
.news-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--color-orange-light);
  color: var(--color-orange-dark);
  border-radius: 20px;
  font-weight: 600;
  font-size: var(--fs-body-sm);
  margin-bottom: var(--sp-md);
}
.news-card h3 { margin-bottom: var(--sp-sm); font-size: 1.1rem; line-height: 1.4; }
.news-meta { color: var(--color-text-muted); font-size: var(--fs-body-sm); margin-bottom: var(--sp-md); }
.news-card p { color: var(--color-text-soft); font-size: var(--fs-body-sm); line-height: var(--lh-relaxed); }

/* ==================== 联系 ==================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2xl);
  align-items: start;
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}
.contact-info-item {
  display: flex;
  gap: var(--sp-md);
  align-items: flex-start;
}
.contact-icon {
  font-size: 1.75rem;
  width: 52px;
  height: 52px;
  background: var(--color-orange-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-item h3 { margin-bottom: 4px; font-size: 1.05rem; }
.contact-info-item p { color: var(--color-text-soft); }
.contact-form-wrap {
  background: var(--color-white);
  padding: var(--sp-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.contact-form-wrap .section-title { text-align: left; font-size: var(--fs-title); margin-bottom: var(--sp-xl); }

/* ==================== FAQ ==================== */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--sp-md);
  overflow: hidden;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-lg) var(--sp-xl);
  cursor: pointer;
}
.faq-question h3 { font-size: 1.05rem; flex: 1; }
.faq-toggle { font-size: 1.5rem; color: var(--color-orange); font-weight: 700; margin-left: var(--sp-md); transition: transform 0.2s; }
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 var(--sp-xl);
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 var(--sp-xl) var(--sp-lg);
  color: var(--color-text-soft);
  line-height: var(--lh-relaxed);
}

/* ==================== 会员 ==================== */
.member-card {
  background: var(--color-white);
  padding: var(--sp-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.member-card h2 { text-align: center; margin-bottom: var(--sp-xl); }

/* ==================== 表单 ==================== */
.form-container { margin-top: var(--sp-lg); }
.form-tabs {
  display: flex;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 4px;
  margin-bottom: var(--sp-lg);
}
.form-tab {
  flex: 1;
  text-align: center;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text-soft);
  transition: all 0.2s;
  font-size: var(--fs-body-sm);
}
.form-tab.active { background: var(--color-white); color: var(--color-orange); box-shadow: var(--shadow-sm); }
.form-row { margin-bottom: var(--sp-md); }
.form-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: var(--fs-body-sm);
  color: var(--color-text);
}
.form-row input[type=text],
.form-row input[type=tel],
.form-row input[type=number],
.form-row input[type=email],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--fs-body);
  transition: border-color 0.2s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-orange);
}
.form-success {
  display: none;
  text-align: center;
  padding: var(--sp-2xl) 0;
}
.form-success.show { display: block; }
.success-icon {
  font-size: 3rem;
  margin-bottom: var(--sp-md);
}
.form-success h3 { margin-bottom: var(--sp-sm); color: var(--color-green); }

/* ==================== 页脚 ==================== */
.footer {
  background: #262421;
  color: #CCC;
  padding: var(--sp-3xl) 0 var(--sp-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--sp-2xl);
  margin-bottom: var(--sp-2xl);
}
.footer-qrcode { text-align: center; }
.footer-qrcode img {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  border: 2px solid #555;
  padding: 4px;
  background: #fff;
  margin-bottom: var(--sp-sm);
}
.footer-qrcode .qrcode-text {
  color: var(--color-orange) !important;
  font-size: var(--fs-body) !important;
  font-weight: 700;
  margin: 0;
}
.footer h3 {
  color: var(--color-white);
  font-size: var(--fs-body-lg);
  margin-bottom: var(--sp-lg);
}
.footer p, .footer a {
  font-size: var(--fs-body-sm);
  color: #AAA;
  line-height: var(--lh-relaxed);
}
.footer a { text-decoration: none; }
.footer a:hover { color: var(--color-orange); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: var(--sp-sm); }
.footer-bottom {
  border-top: 1px solid #444;
  padding-top: var(--sp-lg);
  text-align: center;
  font-size: var(--fs-body-sm);
  color: #888;
}

/* ==================== 弹窗 ==================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: center;
  padding: var(--sp-md);
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
}
.modal-close {
  position: absolute;
  top: 12px; right: 16px;
  background: none;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: #999;
  line-height: 1;
}
.modal-close:hover { color: var(--color-text); }
.modal h2 {
  font-size: var(--fs-title);
  margin-bottom: var(--sp-md);
  padding-right: 32px;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .services-grid, .product-grid { grid-template-columns: repeat(3, 1fr); }
  .courses-grid, .travel-grid, .news-grid, .stories-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .statistics-grid { grid-template-columns: repeat(4, 1fr); }
  .philosophy-grid { grid-template-columns: repeat(3, 1fr); }
  .nav-links { gap: var(--sp-lg); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .content-grid { grid-template-columns: 1fr; }
  .big-char { font-size: 8rem; }
}
@media (max-width: 820px) {
  :root {
    --fs-title-xl: 2.5rem;
    --fs-title-lg: 1.75rem;
    --sp-3xl: 48px;
    --sp-2xl: 32px;
  }
  .nav-links, .nav-phone, .nav-actions .btn:not(.open-appointment) { display: none; }
  .menu-toggle { display: block; }
  .nav-links.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    padding: var(--sp-lg) var(--sp-xl);
    border-bottom: 1px solid var(--color-border);
    gap: var(--sp-md);
  }
  .services-grid, .product-grid, .news-grid, .stories-grid, .courses-grid, .travel-grid { grid-template-columns: repeat(2, 1fr); }
  .statistics-grid, .features-grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy-grid { grid-template-columns: 1fr; max-width: 400px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  body { padding-bottom: 80px; }
}
@media (max-width: 520px) {
  .container { padding: 0 var(--sp-md); }
  .services-grid, .product-grid, .news-grid, .stories-grid, .courses-grid, .travel-grid, .statistics-grid, .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .timeline::before { left: 20px; }
  .timeline-year { width: 40px; font-size: 1.2rem; }
  .timeline-body { margin-left: var(--sp-md); }
  .hero h1 { font-size: 2rem; }
  .modal { padding: var(--sp-md); }
  .modal h2 { font-size: 1.4rem; }
}

/* ==================== 动画 ==================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.philosophy-card, .service-card, .story-card, .product-card, .news-card, .feature-item {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}
.philosophy-card:nth-child(1) { animation-delay: 0.1s; }
.philosophy-card:nth-child(2) { animation-delay: 0.2s; }
.philosophy-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(1), .product-card:nth-child(1), .news-card:nth-child(1), .story-card:nth-child(1) { animation-delay: 0.05s; }
.service-card:nth-child(2), .product-card:nth-child(2), .news-card:nth-child(2), .story-card:nth-child(2) { animation-delay: 0.1s; }
.service-card:nth-child(3), .product-card:nth-child(3), .news-card:nth-child(3), .story-card:nth-child(3) { animation-delay: 0.15s; }
.service-card:nth-child(4), .product-card:nth-child(4) { animation-delay: 0.2s; }