:root {
  --pine: #1fa46b;
  --pine-deep: #0d6d4c;
  --mint: #dff7ec;
  --mint-soft: #f2fbf6;
  --leaf: #72c94a;
  --ink: #14251d;
  --muted: #65766d;
  --line: #d8eadf;
  --white: #ffffff;
  --dark: #10231b;
  --radius: 26px;
  --max: 1180px;
  --shadow: 0 26px 70px rgba(18, 91, 62, 0.16);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--mint-soft); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; position: relative; z-index: 1; }
.hero-shell { position: relative; min-height: 100dvh; overflow: hidden; background: radial-gradient(circle at 12% 12%, rgba(114, 201, 74, 0.24), transparent 24%), radial-gradient(circle at 88% 18%, rgba(31, 164, 107, 0.18), transparent 28%), linear-gradient(180deg, #f6fff8 0%, #eefaf3 48%, #ffffff 100%); }
.hero-shell::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(13, 109, 76, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(13, 109, 76, 0.055) 1px, transparent 1px); background-size: 46px 46px; mask-image: linear-gradient(180deg, black 0%, transparent 62%); }
.nav { height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; font-size: 20px; letter-spacing: 0; }
.brand-logo { width: 44px; height: 44px; border-radius: 15px; overflow: hidden; box-shadow: 0 14px 34px rgba(31, 164, 107, 0.25); background: var(--mint); }
.brand-logo img { width: 100%; height: 100%; object-fit: cover; }
.nav-links { display: flex; align-items: center; gap: 30px; color: rgba(20, 37, 29, 0.68); font-size: 14px; font-weight: 700; }
.nav-links a { transition: color 180ms ease; }
.nav-links a:hover { color: var(--pine-deep); }
.nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; border-radius: 999px; font-weight: 900; transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease; }
.nav-cta { padding: 11px 20px; color: var(--white); background: var(--pine); box-shadow: 0 16px 32px rgba(31, 164, 107, 0.24); }
.button { min-height: 54px; padding: 16px 28px; }
.button.primary { color: var(--white); background: var(--pine); box-shadow: 0 18px 38px rgba(31, 164, 107, 0.26); }
.button.secondary { color: var(--pine-deep); background: rgba(255, 255, 255, 0.78); border: 1px solid rgba(31, 164, 107, 0.2); }
.button.pale { margin-top: 30px; color: var(--pine-deep); background: var(--white); box-shadow: 0 14px 34px rgba(14, 70, 49, 0.12); }
.button.invert { background: var(--white); color: var(--pine-deep); box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18); }
.nav-cta:hover, .button:hover { transform: translateY(-2px); }
.nav-cta:active, .button:active { transform: translateY(1px); }
.hero { min-height: calc(100dvh - 76px); display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1fr); align-items: center; gap: 64px; padding: 42px 0 82px; }
.kicker { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 20px; color: var(--pine-deep); font-size: 14px; font-weight: 900; }
.kicker::before { content: ""; width: 30px; height: 2px; border-radius: 999px; background: var(--pine); }
h1 { max-width: 790px; font-size: clamp(44px, 6.4vw, 84px); line-height: 1.04; font-weight: 900; letter-spacing: 0; }
h1 span { display: inline-block; color: var(--pine-deep); }
.hero-text { max-width: 620px; margin-top: 24px; color: var(--muted); font-size: clamp(17px, 1.7vw, 21px); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-visual { position: relative; min-height: 640px; display: flex; align-items: center; justify-content: center; }
.hero-visual::before { content: ""; position: absolute; width: 480px; height: 480px; border-radius: 50%; background: linear-gradient(135deg, rgba(31, 164, 107, 0.22), rgba(114, 201, 74, 0.08)); box-shadow: inset 0 0 0 1px rgba(31, 164, 107, 0.16); }
.phone-frame { position: absolute; padding: 11px; border-radius: 38px; background: #11261c; box-shadow: var(--shadow), inset 0 0 0 1px rgba(255,255,255,0.08); }
.phone-frame img { width: 100%; height: 100%; object-fit: cover; border-radius: 28px; background: var(--white); }
.main-phone { width: 292px; aspect-ratio: 395 / 822; transform: rotate(-3deg) translateX(-42px); animation: liftMain 6s ease-in-out infinite; z-index: 2; }
.side-phone { width: 218px; aspect-ratio: 395 / 822; transform: rotate(7deg) translate(128px, 34px); opacity: 0.92; z-index: 1; }
.orbit-card { position: absolute; z-index: 3; width: 214px; padding: 18px; border-radius: var(--radius); background: rgba(255,255,255,0.86); border: 1px solid rgba(31, 164, 107, 0.16); box-shadow: 0 20px 54px rgba(18, 91, 62, 0.13); backdrop-filter: blur(18px); }
.orbit-card.top { top: 78px; left: 8px; }
.orbit-card.bottom { right: -2px; bottom: 102px; }
.orbit-card b { display: block; font-size: 15px; color: var(--ink); margin-bottom: 8px; }
.orbit-card span { display: block; color: var(--muted); font-size: 13px; line-height: 1.5; }
.section { padding: 96px 0; background: var(--white); }
.light-section { background: #f5fcf7; }
.section-title { max-width: 760px; margin-bottom: 44px; }
.section-title h2, .community-copy h2 { font-size: clamp(30px, 4vw, 54px); line-height: 1.12; font-weight: 900; letter-spacing: 0; }
.section-title p, .community-copy p { margin-top: 16px; max-width: 640px; color: var(--muted); font-size: 17px; line-height: 1.75; }
.topic-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; grid-auto-rows: minmax(196px, auto); gap: 20px; }
.topic-card { padding: 30px; border-radius: var(--radius); background: var(--white); border: 1px solid var(--line); box-shadow: 0 18px 48px rgba(18, 91, 62, 0.07); }
.topic-card.large { grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-end; background: linear-gradient(135deg, rgba(31, 164, 107, 0.15), rgba(255,255,255,0.8)), var(--mint); min-height: 412px; position: relative; overflow: hidden; }
.topic-card.large::before { content: ""; position: absolute; width: 270px; height: 270px; right: -80px; top: -70px; border-radius: 50%; background: rgba(114, 201, 74, 0.24); }
.topic-card h3 { position: relative; font-size: 24px; line-height: 1.24; font-weight: 900; }
.topic-card p { position: relative; margin-top: 12px; color: var(--muted); font-size: 15px; line-height: 1.7; }
.split { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: 56px; align-items: start; }
.assurance-list { display: grid; gap: 14px; }
.assurance-item { padding: 24px 26px; border-radius: var(--radius); background: #f8fcf9; border: 1px solid var(--line); }
.assurance-item b { display: block; color: var(--pine-deep); font-size: 18px; margin-bottom: 8px; }
.assurance-item span { color: var(--muted); line-height: 1.65; font-size: 15px; }
.green-section { background: radial-gradient(circle at 16% 20%, rgba(114, 201, 74, 0.2), transparent 26%), linear-gradient(135deg, #0f2c20 0%, #0d6d4c 100%); color: var(--white); }
.community-layout { display: grid; grid-template-columns: 1fr 0.9fr; gap: 44px; align-items: center; }
.community-copy p { color: rgba(255,255,255,0.74); }
.community-panel { border-radius: var(--radius); padding: 10px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.18); backdrop-filter: blur(16px); }
.community-row { display: grid; grid-template-columns: 112px 1fr; gap: 14px; align-items: center; padding: 22px; border-bottom: 1px solid rgba(255,255,255,0.14); }
.community-row:last-child { border-bottom: 0; }
.community-row span { color: rgba(255,255,255,0.66); font-size: 14px; }
.community-row b { font-size: 20px; }
.app-section { background: #f7fcf9; }
.app-layout { display: grid; grid-template-columns: 1.06fr 0.94fr; gap: 50px; align-items: center; }
.screen-stack { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; align-items: end; }
.screen-card { padding: 10px; border-radius: 34px; background: #11261c; box-shadow: 0 22px 54px rgba(18, 91, 62, 0.16); }
.screen-card.raised { transform: translateY(-30px); }
.screen-card img { aspect-ratio: 395 / 822; object-fit: cover; border-radius: 25px; background: var(--white); }
.final-section { padding: 86px 0; background: linear-gradient(135deg, #f5fff8 0%, #e8f8ee 100%); }
.final-card { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 28px; padding: 40px; border-radius: var(--radius); color: var(--white); background: linear-gradient(135deg, #10231b 0%, #0d6d4c 62%, #1fa46b 100%); box-shadow: var(--shadow); }
.final-card h2 { max-width: 680px; font-size: clamp(32px, 4.2vw, 56px); line-height: 1.1; font-weight: 900; }
.final-card p { margin-top: 16px; max-width: 580px; color: rgba(255,255,255,0.74); font-size: 17px; line-height: 1.75; }
.footer { padding: 34px 0; background: #10231b; color: rgba(255,255,255,0.72); }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 28px; font-size: 13px; line-height: 1.8; }
.footer b { color: var(--white); font-size: 15px; }
.footer-company { color: var(--white); font-weight: 800; }
.footer a { color: #c5f6dc; text-decoration: underline; text-underline-offset: 3px; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 680ms ease, transform 680ms ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@keyframes liftMain { 0%, 100% { transform: rotate(-3deg) translate(-42px, 0); } 50% { transform: rotate(-1.5deg) translate(-42px, -12px); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 1ms !important; } }
@media (max-width: 1060px) {
  .hero { grid-template-columns: 1fr; gap: 34px; }
  .hero-visual { min-height: 610px; }
  .split, .community-layout, .app-layout, .final-card { grid-template-columns: 1fr; }
  .screen-stack { max-width: 720px; }
}
@media (max-width: 760px) {
  .container { width: min(100% - 28px, var(--max)); }
  .nav { height: auto; padding: 16px 0; }
  .nav-links { display: none; }
  .brand { font-size: 18px; }
  .nav-cta { padding: 10px 15px; font-size: 13px; }
  .hero { min-height: auto; padding: 40px 0 58px; }
  h1 { font-size: clamp(40px, 13vw, 58px); }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-visual { min-height: 500px; }
  .main-phone { width: min(270px, 74vw); transform: rotate(-2deg) translateX(-18px); }
  .side-phone { width: min(180px, 49vw); transform: rotate(6deg) translate(92px, 44px); }
  .orbit-card { width: 168px; padding: 14px; }
  .orbit-card.top { top: 18px; left: 0; }
  .orbit-card.bottom { right: 0; bottom: 34px; }
  .section { padding: 70px 0; }
  .topic-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .topic-card.large { min-height: 300px; }
  .community-row { grid-template-columns: 1fr; gap: 6px; padding: 18px; }
  .screen-stack { grid-template-columns: repeat(3, 68%); overflow-x: auto; padding: 4px 2px 24px; scroll-snap-type: x mandatory; }
  .screen-card { scroll-snap-align: center; }
  .screen-card.raised { transform: none; }
  .final-card { padding: 26px; }
  .footer-inner { flex-direction: column; }
}