:root {
  --bg: #f7fbf4;
  --panel: #ffffff;
  --ink: #17251c;
  --muted: #60736a;
  --brand: #2f7d4e;
  --brand-dark: #1f5637;
  --soft: #e8f6e5;
  --line: #d9ead5;
  --gold: #f3b84d;
  --shadow: 0 18px 48px rgba(31, 86, 55, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fbfff7 0%, var(--bg) 38%, #ffffff 100%);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 10;
  background: var(--brand); color: #fff; padding: .6rem 1rem; border-radius: 999px;
}
.skip-link:focus { top: 1rem; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.header-inner, .search-bar, .container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  min-height: 76px;
}
.logo {
  display: inline-flex; align-items: center; gap: .75rem;
  font-weight: 800; color: var(--brand-dark); white-space: nowrap;
}
.logo img { width: 150px; height: 40px; object-fit: contain; }
.nav {
  display: flex; align-items: center; gap: .35rem; flex-wrap: wrap; justify-content: flex-end;
}
.nav a {
  padding: .55rem .78rem; border-radius: 999px;
  color: var(--muted); font-size: .96rem;
}
.nav a:hover, .nav a[aria-current="page"] {
  background: var(--soft); color: var(--brand-dark);
}
.search-shell {
  border-top: 1px solid rgba(217, 234, 213, .7);
  background: rgba(247, 251, 244, .86);
}
.search-bar {
  padding: .65rem 0 .85rem;
  display: grid; grid-template-columns: 1fr auto; gap: .6rem;
}
.search-bar input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: .78rem 1rem;
  font-size: 1rem;
  background: #fff;
}
.search-bar button, .btn {
  border: 0; border-radius: 999px;
  padding: .82rem 1.2rem;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 22px rgba(47, 125, 78, .18);
}
.search-hint {
  grid-column: 1 / -1;
  min-height: 1.3rem;
  margin: 0;
  color: var(--muted);
  font-size: .92rem;
}
.hero {
  padding: 58px 0 36px;
}
.hero-grid {
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 36px; align-items: center;
}
.eyebrow {
  display: inline-flex; gap: .4rem; align-items: center;
  border: 1px solid var(--line);
  color: var(--brand-dark);
  background: rgba(232,246,229,.7);
  border-radius: 999px;
  padding: .36rem .75rem;
  font-weight: 700;
  font-size: .92rem;
}
h1, h2, h3, h4, h5, h6 { line-height: 1.24; color: var(--ink); margin: 0 0 .8rem; }
h1 { font-size: clamp(2.25rem, 5vw, 4.8rem); letter-spacing: -.05em; }
h2 { font-size: clamp(1.65rem, 3vw, 2.55rem); letter-spacing: -.035em; }
h3 { font-size: 1.28rem; }
p { margin: 0 0 1rem; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 65ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.4rem 0; align-items: center; }
.btn.secondary {
  background: #fff; color: var(--brand-dark);
  border: 1px solid var(--line);
  box-shadow: none;
}
.domain-pill {
  display: inline-flex; align-items: center; gap: .45rem;
  background: #fff; border: 1px dashed var(--brand);
  color: var(--brand-dark); border-radius: 999px;
  padding: .55rem .85rem; font-weight: 700;
}
.hero-card, .panel {
  background: rgba(255,255,255,.86);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
}
.hero-card { padding: 16px; }
.hero-card figure { margin: 0; position: relative; overflow: hidden; border-radius: 24px; }
.hero-card figcaption, .image-note {
  margin-top: .65rem; color: var(--muted); font-size: .88rem;
}
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin-top: 1rem;
}
.stat {
  background: #fff; border: 1px solid var(--line); border-radius: 22px;
  padding: .85rem; text-align: center;
}
.stat strong { display:block; font-size:1.35rem; color: var(--brand-dark); }
.section { padding: 54px 0; }
.section-head {
  display: flex; justify-content: space-between; align-items: end; gap: 1rem;
  margin-bottom: 1.35rem;
}
.section-head p { color: var(--muted); max-width: 65ch; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 22px;
  box-shadow: 0 12px 26px rgba(31, 86, 55, .06);
}
.card .icon {
  width: 46px; height: 46px; display: grid; place-items: center;
  border-radius: 15px; background: var(--soft); color: var(--brand-dark);
  font-weight: 900; margin-bottom: .9rem;
}
.tags { display:flex; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.tags span {
  border: 1px solid var(--line);
  background: #fbfff7;
  color: var(--brand-dark);
  border-radius: 999px;
  padding: .25rem .55rem;
  font-size: .85rem;
}
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.video-card {
  overflow: hidden;
  padding: 0;
}
.video-card figure { margin: 0; position: relative; overflow: hidden; background: #eef7eb; }
.video-card video, .video-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.video-card .play {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: rgba(23, 37, 28, .18);
  opacity: 0;
  transition: opacity .22s ease;
}
.video-card:hover .play, .video-card.is-hover .play { opacity: 1; }
.play span {
  width: 62px; height: 62px; display: grid; place-items: center;
  border-radius: 999px;
  background: rgba(255,255,255,.92);
  color: var(--brand-dark);
  font-weight: 900;
  transform: scale(.92);
  transition: transform .22s ease;
}
.video-card:hover .play span, .video-card.is-hover .play span { transform: scale(1); }
.video-body { padding: 18px; }
.metrics {
  display: flex; gap: .55rem; flex-wrap: wrap;
  list-style: none; padding: 0; margin: .8rem 0 0;
  color: var(--muted); font-size: .9rem;
}
.timeline { display: grid; gap: 14px; }
.timeline article {
  display: grid; grid-template-columns: 120px 1fr;
  gap: 18px; align-items: start;
  padding: 18px; border: 1px solid var(--line); border-radius: 24px;
  background: #fff;
}
.timeline time {
  color: var(--brand-dark); font-weight: 800;
  background: var(--soft); border-radius: 14px; padding: .45rem .65rem; text-align: center;
}
.faq-list { display: grid; gap: 12px; }
.faq-list details {
  background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 16px 18px;
}
.faq-list summary { cursor: pointer; font-weight: 800; color: var(--brand-dark); }
.quote { position: relative; }
.quote p { color: var(--muted); }
.quote strong { color: var(--brand-dark); }
.breadcrumb {
  margin: 28px 0 18px;
  color: var(--muted);
  font-size: .95rem;
}
.breadcrumb a { color: var(--brand-dark); font-weight: 700; }
.page-hero {
  padding: 36px 0 22px;
}
.page-hero .panel { padding: 32px; }
.kv-list {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px;
  list-style: none; padding: 0; margin: 0;
}
.kv-list li {
  background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 14px;
}
.contact-box {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
.notice {
  border-left: 5px solid var(--brand);
  background: var(--soft);
  border-radius: 18px;
  padding: 18px;
}
.site-footer {
  margin-top: 48px;
  background: #173421;
  color: rgba(255,255,255,.82);
}
.footer-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px;
}
.footer-inner .logo { color: #fff; }
.footer-inner a { color: #fff; }
.footer-note { border-top: 1px solid rgba(255,255,255,.12); padding-top: 16px; margin-top: 16px; }
@media (max-width: 980px) {
  .header-inner { flex-direction: column; align-items: stretch; padding: 14px 0; }
  .nav { justify-content: flex-start; }
  .hero-grid, .grid-3, .grid-2, .contact-box { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .section-head { display: block; }
}
@media (max-width: 620px) {
  .search-bar { grid-template-columns: 1fr; }
  .stats, .video-grid, .kv-list { grid-template-columns: 1fr; }
  .timeline article { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .nav a { font-size: .9rem; padding: .48rem .62rem; }
}

.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }