@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ============================================
   CSS 变量 & 重置
   ============================================ */
:root {
  --mint: #b4fde1;
  --sky: #add8e6;
  --dark: #172620;
  --dark-80: rgba(23,38,32,0.8);
  --mint-dark: #7de8be;
  --sky-dark: #7bbdd4;
  --white: #ffffff;
  --off-white: #f4fef9;
  --card-bg: rgba(180,253,225,0.18);
  --card-border: var(--dark);
  --shadow-outer: 4px 4px 0px var(--dark);
  --shadow-inner: inset -2px -2px 6px rgba(23,38,32,0.12);
  --shadow-clay: 4px 4px 0px var(--dark), inset -2px -2px 8px rgba(180,253,225,0.4);
  --radius: 20px;
  --radius-sm: 12px;
  --border: 3px solid var(--dark);
  --border-thick: 4px solid var(--dark);
  --font-head: 'Space Grotesk', 'DM Sans', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, -apple-system, sans-serif;
  --nav-h: 64px;
  --content-max: 900px;
  --page-max: 1200px;
  --transition: 200ms ease-out;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--dark);
  color: var(--dark);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

a:hover {
  text-decoration: underline;
}

ul, ol, menu {
  list-style: none;
}

/* ============================================
   页面外层包裹
   ============================================ */
.page-wrapper {
  background: var(--off-white);
  min-height: 100vh;
  padding-bottom: calc(var(--nav-h) + 2rem);
  position: relative;
}

/* ============================================
   details/summary 导航（顶部悬浮，桌面隐藏）
   ============================================ */
.nav-details {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--dark);
  border-bottom: var(--border);
}

.nav-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  list-style: none;
  min-height: 52px;
  color: var(--mint);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
}

.nav-summary::-webkit-details-marker { display: none; }

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-brand a {
  color: var(--mint);
}

.nav-toggle-label {
  font-size: 0.85rem;
  color: var(--sky);
  font-weight: 500;
}

.nav-details[open] .nav-toggle-label::after {
  content: ' ▲';
}

.nav-toggle-label::after {
  content: ' ▼';
}

.nav-details > menu {
  background: var(--dark);
  padding: 1rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 2px solid rgba(180,253,225,0.15);
}

.nav-details > menu > li > a {
  display: block;
  color: var(--mint);
  font-size: 0.95rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: background var(--transition), border-color var(--transition);
  font-weight: 500;
}

.nav-details > menu > li > a:hover {
  background: rgba(180,253,225,0.1);
  border-color: var(--mint);
  text-decoration: none;
}

.nav-search {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.nav-search input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: var(--border);
  background: rgba(180,253,225,0.1);
  color: var(--mint);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.nav-search input::placeholder { color: rgba(180,253,225,0.5); }

.nav-search button {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: var(--border);
  background: var(--mint);
  color: var(--dark);
  font-family: var(--font-head);
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-search button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-outer);
}

/* ============================================
   底部固定导航条
   ============================================ */
.bottom-nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: var(--dark);
  border-top: var(--border-thick);
  border-top-color: var(--mint);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1rem;
  height: var(--nav-h);
  box-shadow: 0 -4px 16px rgba(23,38,32,0.4);
}

.bottom-nav-brand {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--mint);
  white-space: nowrap;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 2px solid var(--mint);
  min-height: 42px;
  display: flex;
  align-items: center;
  transition: background var(--transition);
  flex-shrink: 0;
}

.bottom-nav-brand:hover {
  background: rgba(180,253,225,0.12);
  text-decoration: none;
}

.bottom-nav-search {
  flex: 0 0 auto;
}

.bottom-nav-search form {
  display: flex;
  gap: 0.4rem;
}

.bottom-nav-search input {
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 2px solid var(--mint);
  background: rgba(180,253,225,0.08);
  color: var(--mint);
  font-size: 0.85rem;
  font-family: var(--font-body);
  width: 140px;
  min-height: 40px;
}

.bottom-nav-search input::placeholder { color: rgba(180,253,225,0.45); }

.bottom-nav-search button {
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 2px solid var(--mint);
  background: var(--mint);
  color: var(--dark);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  min-height: 40px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.bottom-nav-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(180,253,225,0.3);
}

.bottom-nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
}

.bottom-nav-links::-webkit-scrollbar { display: none; }

.bnl-item {
  color: var(--sky);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 0.5rem 0.6rem;
  border-radius: 10px;
  border: 2px solid transparent;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.bnl-item:hover {
  color: var(--mint);
  border-color: var(--sky);
  background: rgba(173,216,230,0.1);
  text-decoration: none;
}

/* ============================================
   主内容区
   ============================================ */
.main-content {
  padding-top: 60px;
}

/* ============================================
   Hero 区域（首页）
   ============================================ */
.hero-section {
  min-height: 70vh;
  background: var(--dark);
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  grid-template-rows: 1fr;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 4rem 2rem;
  gap: 2rem;
}

.hero-aside {
  align-self: start;
  padding-top: 2rem;
}

.hero-aside ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hero-aside ul li a {
  color: var(--sky);
  font-size: 0.85rem;
  padding: 0.4rem 0.6rem;
  display: block;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  font-weight: 500;
}

.hero-aside ul li a:hover {
  color: var(--mint);
  border-color: var(--sky);
  text-decoration: none;
}

.hero-body {
  text-align: center;
  z-index: 2;
  position: relative;
}

.hero-h1 {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--mint);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  text-shadow: 3px 3px 0 rgba(180,253,225,0.15);
}

.hero-desc {
  color: var(--sky);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 2rem;
}

.hero-figure {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.dot-grid {
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle, rgba(180,253,225,0.18) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
}

.dot-grid-sm {
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle, rgba(180,253,225,0.14) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* ============================================
   内页 Hero
   ============================================ */
.inner-main {
  /* no extra offset needed */
}

.inner-hero-section {
  background: var(--dark);
  display: grid;
  grid-template-columns: 200px 1fr 160px;
  align-items: start;
  padding: 3rem 2rem 2.5rem;
  gap: 2rem;
  position: relative;
  overflow: hidden;
  min-height: 200px;
}

.inner-aside {
  padding-top: 0.5rem;
}

.inner-aside .aside-title {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sky);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.inner-aside hr {
  border: none;
  border-top: 2px solid rgba(173,216,230,0.3);
  margin-bottom: 0.75rem;
}

.inner-aside ul li a {
  color: var(--sky);
  font-size: 0.82rem;
  padding: 0.35rem 0.5rem;
  display: block;
  border-radius: 6px;
  border: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  font-weight: 500;
  line-height: 1.4;
}

.inner-aside ul li a:hover {
  color: var(--mint);
  border-color: rgba(173,216,230,0.4);
  text-decoration: none;
}

.inner-hero-body {
  z-index: 2;
  position: relative;
}

.breadcrumb {
  font-size: 0.82rem;
  color: var(--sky);
  margin-bottom: 0.75rem;
  opacity: 0.8;
}

.breadcrumb a {
  color: var(--sky);
  opacity: 0.8;
}

.breadcrumb a:hover { opacity: 1; }

.inner-h1 {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--mint);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.inner-figure {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 180px;
  overflow: hidden;
  opacity: 0.6;
}

.page-dates {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.pub-date, .mod-date {
  font-size: 0.8rem;
  color: rgba(173,216,230,0.7);
  font-weight: 500;
}

.hero-sub {
  color: var(--sky);
  font-size: 1rem;
  margin-top: 0.5rem;
  line-height: 1.6;
}

/* ============================================
   内容区：aside 在左，正文在右
   ============================================ */
.content-section {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 3rem 2rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

.section-aside {
  position: sticky;
  top: 80px;
}

.section-aside .aside-title {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--dark);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  opacity: 0.6;
}

.section-aside hr {
  border: none;
  border-top: 2px solid rgba(23,38,32,0.15);
  margin-bottom: 0.75rem;
}

.aside-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.aside-nav li a {
  color: var(--dark);
  font-size: 0.88rem;
  padding: 0.4rem 0.6rem;
  display: block;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: background var(--transition), border-color var(--transition);
  font-weight: 500;
  line-height: 1.45;
}

.aside-nav li a:hover {
  background: rgba(23,38,32,0.06);
  border-color: rgba(23,38,32,0.15);
  text-decoration: none;
}

/* ============================================
   正文排版
   ============================================ */
.prose {
  max-width: 72ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--dark);
}

.prose h2 {
  font-family: var(--font-head);
  font-size: 1.55rem;
  font-weight: 700;
  margin: 2.5rem 0 0.4rem;
  letter-spacing: -0.02em;
  color: var(--dark);
}

.prose h2 + hr,
.prose h3 + hr {
  border: none;
  border-top: 3px solid var(--mint);
  margin-bottom: 1rem;
}

.prose h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 2rem 0 0.4rem;
  color: var(--dark);
}

.prose p {
  margin-bottom: 1.1rem;
}

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.1rem;
}

.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }

.prose li { margin-bottom: 0.4rem; }

.prose a {
  color: #0d6e50;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.prose a:hover { color: var(--dark); }

.prose blockquote {
  border-left: 4px solid var(--mint);
  padding: 0.75rem 1.25rem;
  background: rgba(180,253,225,0.15);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-style: italic;
}

.prose strong { font-weight: 700; }
.prose em { font-style: italic; }

.prose hr {
  border: none;
  border-top: 2px solid rgba(23,38,32,0.12);
  margin: 2rem 0;
}

/* ============================================
   Claymorphism 卡片
   ============================================ */
.clay-card {
  background: linear-gradient(135deg, rgba(180,253,225,0.5) 0%, rgba(173,216,230,0.4) 100%);
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-clay);
  padding: 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.clay-card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 6px 6px 0px var(--dark), inset -2px -2px 10px rgba(180,253,225,0.5);
}

.clay-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.clay-card h3 a {
  color: var(--dark);
}

.clay-card h3 a:hover {
  text-decoration: underline;
  color: #0d6e50;
}

.card-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(23,38,32,0.75);
  margin-bottom: 0.5rem;
}

.card-date {
  font-size: 0.78rem;
  color: rgba(23,38,32,0.5);
  font-weight: 500;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* ============================================
   粘土按钮
   ============================================ */
.clay-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  background: var(--mint);
  color: var(--dark);
  border: var(--border-thick);
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  box-shadow: var(--shadow-outer), inset -1px -1px 4px rgba(23,38,32,0.12);
  cursor: pointer;
  transition: transform 200ms cubic-bezier(0.34, 1.56), box-shadow var(--transition);
  text-decoration: none;
  min-height: 48px;
}

.clay-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 6px 6px 0px var(--dark), inset -1px -1px 4px rgba(23,38,32,0.12);
  text-decoration: none;
  color: var(--dark);
}

.clay-btn:active {
  transform: translateY(1px);
  box-shadow: 2px 2px 0px var(--dark), inset -1px -1px 4px rgba(23,38,32,0.12);
}

/* ============================================
   首页各 Section
   ============================================ */
.services-section,
.cases-section,
.children-section {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

.section-title {
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

.services-section hr,
.cases-section hr,
.children-section hr {
  border: none;
  border-top: 3px solid var(--mint);
  margin-bottom: 1.75rem;
}

/* ============================================
   Cases DL 列表
   ============================================ */
.cases-dl {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.cases-dl dt {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.cases-dl dt a {
  color: var(--dark);
  border-bottom: 2px solid var(--mint);
  padding-bottom: 1px;
  transition: border-color var(--transition), color var(--transition);
}

.cases-dl dt a:hover {
  color: #0d6e50;
  border-color: var(--mint-dark);
  text-decoration: none;
}

.cases-dl dd {
  font-size: 0.9rem;
  color: rgba(23,38,32,0.7);
  line-height: 1.6;
  padding-left: 0.5rem;
  border-left: 3px solid var(--sky);
}

.dl-date {
  font-size: 0.78rem;
  color: rgba(23,38,32,0.45);
  font-style: italic;
}

/* ============================================
   页脚（极简：仅 p + small）
   ============================================ */
.site-footer {
  background: var(--dark);
  text-align: center;
  padding: 3rem 2rem 6rem;
  border-top: var(--border-thick);
  border-top-color: var(--mint);
}

.site-footer > p {
  color: var(--sky);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

.footer-cta-text {
  font-family: var(--font-head);
  font-size: 1.1rem !important;
  font-weight: 700;
  color: var(--mint) !important;
  margin-bottom: 1rem !important;
}

.footer-link {
  color: var(--sky);
  border-bottom: 1px solid rgba(173,216,230,0.4);
  transition: color var(--transition);
}

.footer-link:hover {
  color: var(--mint);
  text-decoration: none;
  border-color: var(--mint);
}

.site-footer > small {
  display: block;
  margin-top: 1.25rem;
  color: rgba(173,216,230,0.5);
  font-size: 0.78rem;
  line-height: 1.6;
}

/* ============================================
   About CTA Section
   ============================================ */
.about-cta-section {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
}

.section-aside-placeholder { /* empty grid cell */ }

.about-cta-body h2 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.about-cta-body hr {
  border: none;
  border-top: 3px solid var(--mint);
  margin-bottom: 1rem;
}

.cta-figure {
  background: linear-gradient(135deg, rgba(180,253,225,0.35) 0%, rgba(173,216,230,0.25) 100%);
  border: var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-clay);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
}

.cta-figure p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--dark);
}

/* ============================================
   联系表单
   ============================================ */
.contact-form-wrap {
  margin-top: 2rem;
}

.contact-form-wrap h2 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.contact-form-wrap hr {
  border: none;
  border-top: 3px solid var(--mint);
  margin-bottom: 1.25rem;
}

.form-figure {
  /* figure wrapper for form */
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-row label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--dark);
}

.form-row input,
.form-row textarea {
  padding: 0.65rem 0.85rem;
  border: var(--border);
  border-radius: var(--radius-sm);
  background: rgba(180,253,225,0.15);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--dark);
  transition: border-color var(--transition), box-shadow var(--transition);
  min-height: 44px;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--mint-dark);
  box-shadow: 0 0 0 3px rgba(180,253,225,0.3);
}

.form-row textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================
   HR 装饰（prose 外也用到 section-title 后）
   ============================================ */
h2 + hr, h3 + hr {
  border: none;
  border-top: 3px solid var(--mint);
  margin-bottom: 1rem;
}

/* ============================================
   Scroll Reveal 动效
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
  .clay-card,
  .cases-dl dt,
  .cta-figure {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s cubic-bezier(0.34, 1.56);
  }

  .clay-card.visible,
  .cases-dl dt.visible,
  .cta-figure.visible {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .clay-card,
  .cases-dl dt,
  .cta-figure {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================
   响应式 — 平板
   ============================================ */
@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    min-height: auto;
    padding: 3rem 1.5rem 2rem;
  }

  .hero-aside {
    display: none;
  }

  .hero-figure {
    display: none;
  }

  .inner-hero-section {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    padding: 2rem 1.5rem 1.5rem;
  }

  .inner-aside {
    display: none;
  }

  .inner-figure {
    display: none;
  }

  .content-section {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 2rem 1.5rem;
  }

  .section-aside {
    position: static;
    border: var(--border);
    border-radius: var(--radius-sm);
    background: rgba(180,253,225,0.12);
    padding: 1rem;
    margin-bottom: 1.5rem;
  }

  .about-cta-section {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .section-aside-placeholder {
    display: none;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

/* ============================================
   响应式 — 手机
   ============================================ */
@media (max-width: 600px) {
  :root {
    --nav-h: 56px;
  }

  .page-wrapper {
    padding-bottom: calc(var(--nav-h) + 1.5rem);
  }

  .nav-details {
    display: none; /* 手机只用底部导航 */
  }

  .main-content {
    padding-top: 0;
  }

  .hero-section {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem 1.25rem;
  }

  .hero-h1 {
    font-size: clamp(1.8rem, 8vw, 3rem);
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .inner-hero-section {
    padding: 1.5rem 1.25rem;
    display: block;
  }

  .inner-h1 {
    font-size: clamp(1.35rem, 5vw, 2rem);
  }

  .content-section {
    padding: 1.5rem 1.25rem;
  }

  .services-section,
  .cases-section,
  .children-section {
    padding: 1.5rem 1.25rem;
  }

  .section-title {
    font-size: 1.35rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .bottom-nav-bar {
    padding: 0 0.75rem;
    gap: 0.5rem;
  }

  .bottom-nav-search input {
    width: 90px;
  }

  .bottom-nav-links {
    display: none;
  }

  .bottom-nav-brand {
    font-size: 0.9rem;
    padding: 0.45rem 0.6rem;
  }

  .site-footer {
    padding: 2.5rem 1.25rem 5rem;
  }

  .contact-form-wrap {
    padding: 1.25rem;
  }

  .about-cta-section {
    padding: 1.5rem 1.25rem;
  }

  .clay-btn {
    width: 100%;
    text-align: center;
  }

  .prose {
    font-size: 1rem;
  }
}

/* ============================================
   FAQ 特殊样式
   ============================================ */
.faq-prose details {
  border: var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  background: rgba(180,253,225,0.12);
  overflow: hidden;
}

.faq-prose details summary {
  padding: 0.85rem 1rem;
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-head);
  font-size: 0.95rem;
  list-style: none;
  color: var(--dark);
}

.faq-prose details summary::-webkit-details-marker { display: none; }

.faq-prose details[open] summary {
  border-bottom: 2px solid rgba(23,38,32,0.15);
  margin-bottom: 0.5rem;
}

.faq-prose details > *:not(summary) {
  padding: 0 1rem 1rem;
}

/* ============================================
   Privacy 样式
   ============================================ */
.privacy-prose h2 {
  margin-top: 2rem;
}

/* ============================================
   服务卡片特殊
   ============================================ */
.service-card {
  background: linear-gradient(135deg, rgba(173,216,230,0.45) 0%, rgba(180,253,225,0.35) 100%);
}

/* ============================================
   无障碍与焦点
   ============================================ */
:focus-visible {
  outline: 3px solid var(--mint-dark);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ============================================
   打印
   ============================================ */
@media print {
  .bottom-nav-bar,
  .nav-details {
    display: none !important;
  }

  .page-wrapper {
    padding-bottom: 0;
  }

  body {
    background: white;
    color: black;
  }
}