/* ═══════════════════════════════════════════════════════════════
   凡朴穹顶 · 主站样式
   风格参考：midomo.es — 建筑感、极简、大字、留白充足
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg:       #FAFAF7;
  --dark:     #141F18;
  --green:    #2C4A35;
  --mid:      #6B8C5A;
  --light:    #E8E4DC;
  --text:     #1A1A17;
  --muted:    #6E6E65;
  --border:   rgba(26, 26, 23, 0.09);
  --font:     "Noto Sans SC", "PingFang SC", "Helvetica Neue", system-ui, sans-serif;
  --ease:     cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ── 导航 ─────────────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  height: 64px;
  background: rgba(20, 31, 24, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav-dome-icon { width: 32px; height: auto; color: white; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  transition: color 0.2s;
}

.nav-links a:hover { color: white; }

.nav-cta {
  padding: 0.4em 1.1em;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 999px;
  color: white !important;
  font-size: 0.8rem !important;
  transition: background 0.2s, border-color 0.2s !important;
}

.nav-cta:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.5);
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--dark);
  display: flex;
  align-items: center;
  padding: 120px 3rem 6rem;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 700;
  color: white;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 1.75rem;
}

.hero-desc {
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  color: rgba(255,255,255,0.52);
  line-height: 1.85;
  margin-bottom: 2.5rem;
  max-width: 420px;
}

.hero-btn {
  display: inline-block;
  padding: 0.75em 2em;
  background: white;
  color: var(--dark);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
  transition: opacity 0.2s, transform 0.2s;
}

.hero-btn:hover { opacity: 0.88; transform: translateY(-1px); }

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  animation: bounce 2.4s ease-in-out infinite;
  z-index: 2;
}

.hero-scroll-hint svg { width: 14px; height: 20px; }

.hero-dome-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  pointer-events: none;
}

.hero-dome-bg svg {
  width: 65%;
  height: auto;
  opacity: 0.6;
}

/* ── 数据栏 ────────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0 3rem;
  background: white;
  border-bottom: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 2rem 4rem;
}

.stat-num {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-num em { font-style: normal; font-size: 0.55em; color: var(--muted); }

.stat-label {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── 通用 Section ──────────────────────────────────────────────── */
.section {
  padding: 7rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section--dark {
  max-width: 100%;
  background: var(--dark);
  padding: 7rem 3rem;
}

.section-header {
  margin-bottom: 4rem;
}

.section-header--light .section-eyebrow { color: var(--mid); }
.section-header--light .section-title   { color: white; }

.section-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

/* ── 产品网格 ──────────────────────────────────────────────────── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
  overflow: hidden;
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  transition: background 0.2s var(--ease);
  cursor: pointer;
  overflow: hidden;
}

.product-card--dark {
  background: var(--dark);
}

.product-card:hover {
  background: var(--light);
}

.product-card--dark:hover {
  background: #1E3025;
}

.product-card__thumb {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark);
  overflow: hidden;
}

.product-card__thumb--light {
  background: #EEE9E0;
}

.product-card__thumb svg {
  width: 80%;
  height: auto;
}

.product-card__body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
}

.product-card__tag {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.product-card--dark .product-card__tag { color: rgba(255,255,255,0.4); }

.product-card__name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
}

.product-card--dark .product-card__name { color: white; }

.product-card__desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.product-card--dark .product-card__desc { color: rgba(255,255,255,0.45); }

.product-card__link {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--green);
  margin-top: 0.5rem;
  letter-spacing: 0.02em;
}

.product-card--dark .product-card__link { color: var(--mid); }

/* ── 优势 ──────────────────────────────────────────────────────── */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.advantage-item { color: rgba(255,255,255,0.75); }

.advantage-num {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--mid);
  font-weight: 600;
  margin-bottom: 1rem;
}

.advantage-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.advantage-item p {
  font-size: 0.85rem;
  line-height: 1.75;
}

/* ── 在地案例 ──────────────────────────────────────────────────── */
.case-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.case-visual {
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(20,31,24,0.15);
}

.case-visual svg { width: 100%; height: auto; display: block; }

.case-facts {
  list-style: none;
  border-top: 1px solid var(--border);
  margin-bottom: 1.75rem;
}

.case-facts li {
  display: flex;
  gap: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text);
}

.case-facts li span {
  width: 50px;
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding-top: 1px;
}

.case-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.case-btn {
  display: inline-block;
  padding: 0.7em 2em;
  background: var(--dark);
  color: white;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
  transition: opacity 0.2s, transform 0.2s;
}

.case-btn:hover { opacity: 0.82; transform: translateY(-1px); }

/* ── 页脚 ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--dark);
  padding: 3.5rem 3rem 2.5rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 1.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.footer-dome-icon { width: 28px; height: auto; color: white; }

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  transition: color 0.2s;
}

.footer-links a:hover { color: white; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.28);
  letter-spacing: 0.04em;
}

.footer-branch-link {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.footer-branch-link:hover { color: rgba(255,255,255,0.65); }

/* ── 动画 ──────────────────────────────────────────────────────── */
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ── 响应式 ────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .products-grid   { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid  { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .case-block      { grid-template-columns: 1fr; gap: 2.5rem; }
  .stat            { padding: 1.5rem 2.5rem; }
}

@media (max-width: 768px) {
  .site-nav { padding: 0 1.5rem; }
  .nav-links a:not(.nav-cta) { display: none; }

  .hero { padding: 100px 1.5rem 5rem; }
  .hero-dome-bg { opacity: 0.25; }

  .stats-bar { flex-wrap: wrap; padding: 0 1.5rem; }
  .stat { padding: 1.25rem 1.75rem; }
  .stat-divider { display: none; }

  .section { padding: 4.5rem 1.5rem; }
  .section--dark { padding: 4.5rem 1.5rem; }

  .products-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; gap: 1.75rem; }

  .footer-top { flex-direction: column; gap: 1.5rem; align-items: flex-start; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
  .site-footer { padding: 2.5rem 1.5rem 2rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.4rem; }
  .products-grid { gap: 1px; }
}

@media(max-width:600px){.nav-links a.nav-home{display:inline-block}.nav-links{gap:12px}.nav-home{font-size:12px}}

/* 穹顶模块分组导航 */
.resource-section{background:#f0f1e9}.resource-intro{margin-top:20px;color:var(--muted);line-height:1.8}.resource-tabs{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 40px}.resource-tabs a{border:1px solid #2c4a3540;border-radius:30px;padding:10px 20px;font-size:14px}.resource-tabs a:hover{background:#2c4a35;color:white}.resource-group{margin-top:40px;scroll-margin-top:100px}.resource-group>h3{font-size:19px;font-weight:500;margin-bottom:20px}.resource-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.resource-card{background:#fafaf7;border:1px solid #2c4a351c;padding:26px;display:flex;flex-direction:column;gap:16px;transition:background .2s}.resource-card:hover{background:#e3e8da}.resource-card h4{font-size:20px;font-weight:500}.resource-card p{font-size:14px;line-height:1.9;color:var(--muted)}.resource-card>span{margin-top:auto;font-size:13px;color:#2c4a35}.resource-card:focus-visible,.resource-tabs a:focus-visible{outline:3px solid #6b8c5a;outline-offset:4px}#explore,#products{scroll-margin-top:70px}@media(max-width:1000px){.resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:768px){.nav-links a.nav-home{display:inline-block}}@media(max-width:600px){.resource-grid{grid-template-columns:1fr}.resource-card{padding:22px}}