:root {
  --ink: #111514;
  --muted: #626966;
  --green: #2bc27e;
  --green-dark: #15945b;
  --green-soft: #eaf9f1;
  --line: #e7ebe9;
  --paper: #fff;
  --wash: #f6f8f7;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.site-header {
  width: min(1180px, calc(100% - 48px));
  height: 88px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand, .footer-brand { display: flex; align-items: center; gap: 11px; font-weight: 760; }
.brand img, .footer-brand img { width: 34px; height: 34px; border-radius: 9px; }
nav { display: flex; gap: 30px; color: #4e5552; font-size: 15px; }
nav a:hover, .footer-links a:hover { color: var(--green-dark); }
.hero {
  width: min(1180px, calc(100% - 48px));
  min-height: 720px;
  margin: 22px auto 90px;
  padding: 72px 72px 0;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 60px;
  overflow: hidden;
  border: 1px solid #edf0ef;
  border-radius: 38px;
  background: radial-gradient(circle at 90% 6%, #ddf8e9 0, transparent 31%), #fafcfb;
}
.hero-copy { align-self: center; padding-bottom: 72px; position: relative; z-index: 2; }
.eyebrow { margin: 0 0 18px; color: var(--green-dark); font-size: 12px; font-weight: 800; letter-spacing: .17em; }
h1 { margin: 0; font-size: clamp(52px, 5.4vw, 78px); line-height: .98; letter-spacing: -.055em; }
h1 span { color: var(--green); }
.lead { max-width: 530px; margin: 30px 0 34px; color: var(--muted); font-size: 20px; line-height: 1.6; }
.hero-actions { display: flex; align-items: center; gap: 28px; }
.button { display: inline-flex; padding: 16px 22px; color: white; background: var(--ink); border-radius: 13px; font-weight: 700; }
.button:hover { background: var(--green-dark); }
.text-link { font-weight: 700; }
.trust-row { margin-top: 48px; display: flex; flex-wrap: wrap; gap: 19px; color: #727875; font-size: 13px; }
.trust-row span::before { content: "✓"; margin-right: 7px; color: var(--green-dark); font-weight: 900; }
.hero-art { min-height: 640px; position: relative; display: flex; align-items: flex-start; justify-content: center; }
.hero-art img { position: relative; z-index: 1; display: block; width: min(100%, 445px); border-radius: 25px 25px 0 0; box-shadow: 0 30px 70px rgba(24, 66, 48, .16); }
.image-glow { position: absolute; width: 430px; height: 430px; top: 100px; background: rgba(43, 194, 126, .21); filter: blur(80px); border-radius: 50%; }
.intro { max-width: 760px; margin: 0 auto 58px; padding: 0 24px; text-align: center; }
.intro h2, .closing h2, .legal h1 { margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.05; letter-spacing: -.045em; }
.intro > p:last-child { max-width: 600px; margin: 24px auto 0; color: var(--muted); font-size: 18px; line-height: 1.65; }
.feature-grid { width: min(1120px, calc(100% - 48px)); margin: 0 auto 120px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { min-height: 350px; padding: 30px; display: flex; flex-direction: column; border-radius: 26px; background: var(--wash); }
.feature-card.feature-feed { color: white; background: var(--ink); }
.feature-number { align-self: flex-end; color: #98a09c; font-size: 12px; font-weight: 750; letter-spacing: .12em; }
.feature-icon { width: 64px; height: 64px; margin: 54px 0 30px; display: grid; place-items: center; border-radius: 18px; color: var(--green-dark); background: var(--green-soft); font-size: 30px; font-weight: 700; }
.feature-feed .feature-icon { color: white; background: var(--green); }
.feature-icon.hanzi { font-family: "PingFang SC", "Noto Sans CJK SC", sans-serif; }
.feature-card h3 { margin: auto 0 11px; font-size: 25px; letter-spacing: -.025em; }
.feature-card p { margin: 0; color: #6c7370; line-height: 1.55; }
.feature-feed p { color: #b9c1bd; }
.closing { width: min(1120px, calc(100% - 48px)); margin: 0 auto 110px; padding: 72px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: end; border-radius: 30px; background: var(--green-soft); }
.closing > p { margin: 0; color: #52615a; font-size: 18px; line-height: 1.7; }
footer { width: min(1120px, calc(100% - 48px)); min-height: 150px; margin: auto; display: grid; grid-template-columns: 1fr auto; gap: 25px; align-content: center; border-top: 1px solid var(--line); }
.footer-links { display: flex; gap: 28px; color: #545b58; font-size: 14px; }
footer > p { grid-column: 1 / -1; margin: 0; color: #969b99; font-size: 12px; }

.legal-shell { background: #fafcfb; min-height: 100vh; }
.legal { width: min(780px, calc(100% - 48px)); margin: 70px auto 120px; padding: 64px 72px; background: white; border: 1px solid var(--line); border-radius: 28px; }
.legal h1 { font-size: clamp(42px, 7vw, 62px); }
.legal .updated { margin: 16px 0 45px; color: #858b88; font-size: 14px; }
.legal h2 { margin: 38px 0 12px; font-size: 23px; letter-spacing: -.02em; }
.legal h3 { margin: 24px 0 8px; font-size: 17px; }
.legal p, .legal li { color: #4f5753; line-height: 1.75; }
.legal ul { padding-left: 22px; }
.legal a { color: var(--green-dark); text-decoration: underline; text-underline-offset: 3px; }
.support-grid { margin-top: 44px; display: grid; gap: 14px; }
.support-card { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--wash); }
.support-card h2 { margin-top: 0; }
.support-card p:last-child { margin-bottom: 0; }

@media (max-width: 850px) {
  .site-header { width: min(100% - 32px, 1180px); height: 72px; }
  nav a:first-child { display: none; }
  .hero { width: min(100% - 24px, 1180px); margin-top: 10px; padding: 52px 28px 0; grid-template-columns: 1fr; gap: 0; text-align: center; border-radius: 28px; }
  .hero-copy { padding-bottom: 50px; }
  .lead { margin-left: auto; margin-right: auto; font-size: 18px; }
  .hero-actions, .trust-row { justify-content: center; }
  .hero-art { min-height: 0; }
  .hero-art img { width: min(88%, 440px); }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 310px; }
  .closing { padding: 48px 30px; grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  h1 { font-size: 46px; }
  .hero-actions { flex-direction: column; }
  .trust-row { gap: 10px 15px; }
  .legal { width: min(100% - 24px, 780px); margin-top: 30px; padding: 38px 24px; }
  footer { grid-template-columns: 1fr; padding: 35px 0; }
  .footer-links { flex-wrap: wrap; }
}