:root {
  --primary: #2f7d4a;
  --primary-dark: #173f2a;
  --primary-soft: #dff3e5;
  --accent: #ffb52e;
  --peach: #f58268;
  --earth: #3f342a;
  --ink: #142119;
  --muted: #657168;
  --paper: #f7faf6;
  --white: #fff;
  --glass: rgba(255, 255, 255, .56);
  --glass-border: rgba(255, 255, 255, .36);
  --shadow: 0 24px 70px rgba(21, 60, 36, .14);
  --radius: 28px;
  --max-width: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img, video { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }

.container { width: min(calc(100% - 40px), var(--max-width)); margin-inline: auto; }
.section { position: relative; padding: 104px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px;
  color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); border-radius: 4px; }
.section-title { margin: 0; color: var(--primary-dark); font-size: clamp(36px, 5vw, 68px); line-height: 1.08; letter-spacing: -.045em; }
.section-copy { max-width: 650px; margin: 22px 0 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 36px; margin-bottom: 48px; }
.section-head .section-copy { margin-bottom: 7px; }

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.site-header {
  position: fixed; z-index: 100; top: 16px; left: 0; right: 0;
  width: min(calc(100% - 28px), 1320px); margin: auto;
  border-radius: 22px; transition: background .3s ease, transform .3s ease, box-shadow .3s ease;
}
.site-header.scrolled { background: rgba(255, 255, 255, .82); box-shadow: 0 14px 45px rgba(20, 55, 33, .13); }
.nav { height: 72px; padding: 0 22px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand img { width: 46px; height: 46px; object-fit: contain; }
.brand-text { line-height: 1.2; white-space: nowrap; }
.brand-text strong { display: block; color: var(--primary-dark); font-size: 15px; }
.brand-text span { color: var(--muted); font-size: 10px; letter-spacing: .08em; }
.desktop-nav { display: flex; align-items: center; gap: 28px; }
.desktop-nav a { position: relative; padding: 10px 0; color: #314139; font-size: 14px; font-weight: 700; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 2px; height: 2px; background: var(--primary); transition: .25s ease; }
.desktop-nav a:hover::after, .desktop-nav a.active::after { left: 0; right: 0; }
.nav-cta { padding: 12px 20px !important; color: #fff !important; background: var(--primary); border-radius: 999px; }
.nav-cta::after { display: none; }
.menu-toggle { display: none; width: 46px; height: 46px; padding: 12px; border: 0; color: var(--primary-dark); background: rgba(255,255,255,.66); border-radius: 15px; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: currentColor; border-radius: 2px; transition: .25s ease; }
.mobile-menu {
  position: fixed; z-index: 90; inset: 0; padding: 116px 28px 40px;
  display: flex; flex-direction: column; justify-content: center; gap: 11px;
  background: rgba(244, 250, 244, .91); -webkit-backdrop-filter: blur(28px); backdrop-filter: blur(28px);
  opacity: 0; visibility: hidden; transform: translateY(-14px); transition: .32s ease;
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: none; }
.mobile-menu a { padding: 14px 4px; border-bottom: 1px solid rgba(47, 125, 74, .12); color: var(--primary-dark); font-size: clamp(26px, 8vw, 42px); font-weight: 800; letter-spacing: -.04em; }

.hero {
  min-height: 100svh; position: relative; display: grid; place-items: end start; overflow: hidden; background: #173f2a;
}
.hero-media, .hero-media::after { position: absolute; inset: 0; }
.hero-media img, .hero-media video { height: 100%; object-fit: cover; }
.hero-media img { position: absolute; inset: 0; }
.hero-media video { position: relative; z-index: 1; }
.hero-media::after {
  content: ""; z-index: 2;
  background: linear-gradient(90deg, rgba(9,28,17,.78) 0%, rgba(10,31,19,.39) 50%, rgba(10,31,19,.13) 100%),
              linear-gradient(0deg, rgba(8,25,15,.55) 0%, transparent 52%);
}
.hero-content { position: relative; z-index: 3; padding-top: 180px; padding-bottom: clamp(70px, 10vh, 110px); color: #fff; }
.hero-kicker { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; font-size: 13px; font-weight: 700; letter-spacing: .2em; }
.hero-kicker::before { content: ""; width: 42px; height: 1px; background: var(--accent); }
.hero h1 { max-width: 900px; margin: 0; font-size: clamp(54px, 8.8vw, 128px); line-height: .95; letter-spacing: -.065em; text-wrap: balance; }
.hero h1 em { color: #c8f59a; font-style: normal; }
.hero-copy { max-width: 590px; margin: 28px 0 34px; color: rgba(255,255,255,.82); font-size: clamp(16px, 1.5vw, 20px); line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  min-height: 52px; padding: 0 25px; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  border: 1px solid transparent; border-radius: 999px; font-weight: 800; transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn:hover { transform: translateY(-3px) scale(1.02); }
.btn-primary { color: var(--primary-dark); background: #d4ff9d; box-shadow: 0 12px 34px rgba(179,255,94,.22); }
.btn-primary:hover { box-shadow: 0 16px 46px rgba(179,255,94,.35); }
.btn-ghost { color: #fff; background: rgba(255,255,255,.13); border-color: rgba(255,255,255,.27); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.sound-toggle {
  position: absolute; z-index: 4; right: max(22px, calc((100vw - var(--max-width))/2)); bottom: 42px;
  width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.3); color: #fff; background: rgba(255,255,255,.15); border-radius: 50%;
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.scroll-cue { position: absolute; z-index: 4; left: 50%; bottom: 32px; width: 1px; height: 58px; overflow: hidden; background: rgba(255,255,255,.25); }
.scroll-cue::after { content: ""; position: absolute; width: 100%; height: 24px; background: #fff; animation: scrollCue 2s infinite; }
@keyframes scrollCue { from { transform: translateY(-26px); } to { transform: translateY(62px); } }

.trust-strip { position: relative; z-index: 5; margin-top: -30px; }
.trust-grid { padding: 24px 30px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; border-radius: 24px; }
.trust-item { display: flex; gap: 13px; align-items: center; }
.trust-icon { width: 44px; height: 44px; display: grid; place-items: center; flex: none; color: var(--primary); background: var(--primary-soft); border-radius: 14px; font-size: 20px; }
.trust-item strong { display: block; color: var(--primary-dark); font-size: 14px; }
.trust-item span { color: var(--muted); font-size: 12px; }

.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.product-card { position: relative; min-height: 560px; overflow: hidden; border-radius: var(--radius); isolation: isolate; transition: transform .35s ease, box-shadow .35s ease; }
.product-card:hover { transform: translateY(-8px) scale(1.012); box-shadow: 0 30px 80px rgba(21, 60, 36, .22); }
.product-card img { position: absolute; inset: 0; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2,.75,.2,1); }
.product-card:hover img { transform: scale(1.06); }
.product-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(10,28,17,.82), rgba(10,28,17,.04) 72%); }
.product-content { position: absolute; z-index: 2; inset: auto 22px 22px; padding: 28px; color: #fff; border-radius: 22px; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.2); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.product-content small { color: #d4ff9d; font-weight: 800; letter-spacing: .14em; }
.product-content h3 { margin: 8px 0 10px; font-size: clamp(28px, 3.5vw, 46px); line-height: 1; }
.product-content p { margin: 0 0 18px; color: rgba(255,255,255,.78); line-height: 1.7; }
.text-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(5px); }

.story-wrap { display: grid; grid-template-columns: 1.04fr .96fr; min-height: 680px; overflow: hidden; background: #fff; border-radius: 36px; box-shadow: var(--shadow); }
.story-image { position: relative; min-height: 520px; overflow: hidden; }
.story-image img { height: 100%; object-fit: cover; transition: transform .8s ease; }
.story-wrap:hover .story-image img { transform: scale(1.035); }
.story-copy { padding: clamp(42px, 7vw, 90px); display: flex; flex-direction: column; justify-content: center; }
.story-copy .section-title { font-size: clamp(38px, 4.8vw, 64px); }
.feature-list { display: grid; gap: 20px; margin-top: 34px; }
.feature { display: grid; grid-template-columns: 48px 1fr; gap: 15px; align-items: start; }
.feature-number { width: 46px; height: 46px; display: grid; place-items: center; color: var(--primary); background: var(--primary-soft); border-radius: 15px; font-weight: 900; }
.feature h4 { margin: 2px 0 5px; color: var(--primary-dark); font-size: 17px; }
.feature p { margin: 0; color: var(--muted); line-height: 1.65; font-size: 14px; }

.environment { overflow: hidden; color: #fff; background: var(--primary-dark); }
.environment::before { content: ""; position: absolute; width: 520px; height: 520px; right: -180px; top: -190px; background: radial-gradient(circle, rgba(195,255,135,.18), transparent 66%); }
.environment .section-title { color: #fff; }
.environment .section-copy { color: rgba(255,255,255,.68); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 52px; }
.metric { padding: 30px; border-radius: 22px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.13); }
.metric b { display: block; color: #d4ff9d; font-size: clamp(30px, 4vw, 54px); letter-spacing: -.04em; }
.metric span { color: rgba(255,255,255,.7); font-size: 14px; }

.cta-band { padding: 56px; display: flex; align-items: center; justify-content: space-between; gap: 30px; color: #fff; background: linear-gradient(120deg, var(--primary), #70a943); border-radius: 34px; box-shadow: 0 25px 65px rgba(47,125,74,.22); }
.cta-band h2 { margin: 0 0 12px; font-size: clamp(30px, 4vw, 52px); letter-spacing: -.04em; }
.cta-band p { margin: 0; color: rgba(255,255,255,.78); line-height: 1.7; }
.cta-band .btn { flex: none; color: var(--primary-dark); background: #fff; }

.page-hero { min-height: 58vh; padding: 160px 0 80px; display: flex; align-items: end; color: #fff; background: var(--primary-dark); position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(8,29,17,.84), rgba(8,29,17,.3)), var(--page-bg) center/cover; }
.page-hero.has-video::before { background: linear-gradient(90deg, rgba(8,29,17,.84), rgba(8,29,17,.28)); }
.page-hero-video { position: absolute; inset: 0; height: 100%; object-fit: cover; }
.page-hero-content { position: relative; z-index: 2; }
.page-hero h1 { max-width: 900px; margin: 0; font-size: clamp(48px, 8vw, 100px); line-height: .98; letter-spacing: -.06em; }
.page-hero p { max-width: 620px; margin: 24px 0 0; color: rgba(255,255,255,.78); font-size: 18px; line-height: 1.8; }

.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.info-card { padding: 30px; background: #fff; border: 1px solid #e8efe9; border-radius: 24px; transition: .3s ease; }
.info-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.info-card .icon { width: 50px; height: 50px; display: grid; place-items: center; margin-bottom: 24px; color: var(--primary); background: var(--primary-soft); border-radius: 16px; font-size: 23px; }
.info-card h3 { margin: 0 0 10px; color: var(--primary-dark); font-size: 21px; }
.info-card p { margin: 0; color: var(--muted); line-height: 1.75; }

.contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 28px; }
.contact-panel, .contact-form { padding: clamp(28px, 5vw, 54px); border-radius: 30px; }
.contact-panel { color: #fff; background: var(--primary-dark); }
.contact-panel.contact-only { width: min(100%, 840px); margin-inline: auto; }
.contact-panel h2 { margin: 0 0 18px; font-size: 38px; }
.contact-panel > p { color: rgba(255,255,255,.68); line-height: 1.8; }
.contact-list { margin-top: 34px; display: grid; gap: 16px; }
.contact-row { padding: 18px; display: flex; gap: 14px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1); border-radius: 17px; }
.contact-row b { display: block; margin-bottom: 4px; }
.contact-row span { color: rgba(255,255,255,.62); font-size: 14px; }
.contact-row a { color: rgba(255,255,255,.78); transition: color .2s ease; }
.contact-row a:hover { color: #d4ff9d; }
.contact-form { background: #fff; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { color: var(--primary-dark); font-size: 13px; font-weight: 800; }
.field input, .field textarea {
  width: 100%; padding: 15px 16px; color: var(--ink); background: #f4f8f3; border: 1px solid transparent; border-radius: 14px; outline: 0; transition: .2s ease;
}
.field input:focus, .field textarea:focus { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(47,125,74,.1); }
.field textarea { min-height: 150px; resize: vertical; }
.submit-btn { margin-top: 20px; border: 0; color: #fff; background: var(--primary); }

.documentary-shell { padding: clamp(16px, 2.5vw, 26px); background: #0c2115; border-radius: 32px; box-shadow: var(--shadow); }
.documentary-video { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: #07130c; border-radius: 22px; }
.documentary-note { padding: 24px 8px 4px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: rgba(255,255,255,.68); }
.documentary-note strong { display: block; margin-bottom: 5px; color: #fff; font-size: 18px; }
.documentary-note p { margin: 0; line-height: 1.7; }
.documentary-badge { flex: none; padding: 9px 14px; color: #d4ff9d; background: rgba(212,255,157,.1); border: 1px solid rgba(212,255,157,.18); border-radius: 999px; font-size: 12px; font-weight: 800; }

.site-footer { padding: 70px 0 28px; color: rgba(255,255,255,.7); background: #0d2517; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 50px; padding-bottom: 52px; }
.footer-brand { max-width: 430px; }
.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text span { color: rgba(255,255,255,.5); }
.footer-brand p { margin: 22px 0 0; line-height: 1.8; }
.footer-title { margin: 0 0 18px; color: #fff; font-size: 14px; }
.footer-links { display: grid; gap: 12px; font-size: 14px; }
.footer-links a:hover { color: #d4ff9d; }
.footer-bottom { padding-top: 24px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }

.reveal { opacity: 0; transform: translateY(28px); will-change: opacity, transform; transition: opacity .75s ease, transform .75s cubic-bezier(.2,.75,.25,1); }
.reveal.visible { opacity: 1; transform: none; will-change: auto; }
.delay-1 { transition-delay: .1s; } .delay-2 { transition-delay: .2s; } .delay-3 { transition-delay: .3s; }
.toast {
  position: fixed; z-index: 200; left: 50%; bottom: 28px; max-width: calc(100% - 32px); padding: 14px 22px;
  color: #fff; background: rgba(15,47,27,.92); border: 1px solid rgba(255,255,255,.18); border-radius: 999px;
  transform: translate(-50%, 30px); opacity: 0; visibility: hidden; transition: .3s ease; -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.toast.show { transform: translate(-50%, 0); opacity: 1; visibility: visible; }

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .section { padding: 82px 0; }
  .section-head { align-items: start; flex-direction: column; margin-bottom: 34px; }
  .trust-grid, .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .story-wrap { grid-template-columns: 1fr; }
  .story-image { min-height: 430px; }
  .content-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
  .documentary-note { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1.2fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--max-width)); }
  .site-header { top: 10px; width: calc(100% - 18px); border-radius: 18px; }
  .nav { height: 64px; padding: 0 12px 0 15px; }
  .brand img { width: 40px; height: 40px; }
  .brand-text strong { max-width: 190px; overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
  .hero-content { padding-top: 130px; padding-bottom: 100px; }
  .hero h1 { font-size: clamp(52px, 17vw, 76px); }
  .hero-copy { margin-top: 22px; font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; max-width: 310px; }
  .sound-toggle { right: 18px; bottom: 25px; }
  .scroll-cue { display: none; }
  .trust-strip { margin-top: -18px; }
  .trust-grid { padding: 18px; grid-template-columns: 1fr 1fr; gap: 16px 10px; }
  .trust-item { gap: 9px; }
  .trust-icon { width: 38px; height: 38px; font-size: 17px; }
  .trust-item strong { font-size: 12px; }
  .trust-item span { font-size: 10px; }
  .product-grid { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; margin-right: -14px; padding-right: 14px; scrollbar-width: none; }
  .product-grid::-webkit-scrollbar { display: none; }
  .product-card { min-width: 88%; min-height: 500px; scroll-snap-align: start; }
  .product-content { inset: auto 14px 14px; padding: 22px; }
  .story-wrap { border-radius: 25px; }
  .story-image { min-height: 360px; }
  .story-copy { padding: 34px 24px 42px; }
  .metric-grid, .content-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 25px; align-items: stretch; flex-direction: column; border-radius: 25px; }
  .page-hero { min-height: 66vh; padding-bottom: 55px; }
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}