:root {
  --paper: #f7faf9;
  --ink: #1c2b29;
  --muted: #5d6f6c;
  --line: #e0e8e5;
  --teal: #0e5c56;
  --mint: #2bc4a6;
  --gold: #f5b819;
  --card: #ffffff;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(14, 92, 86, 0.10);
  --maxw: 960px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; max-width: var(--maxw); margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 1.1rem; color: var(--ink); }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.nav { display: flex; align-items: center; gap: 18px; font-size: 0.95rem; }
.nav a { color: var(--muted); font-weight: 500; }
.nav a:hover { color: var(--ink); text-decoration: none; }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; color: var(--muted); font-weight: 600; }

.hero {
  text-align: center; padding: 56px 0 40px;
  background: radial-gradient(1200px 400px at 50% -120px, rgba(43,196,166,.18), transparent 70%);
}
.hero img.app-icon { width: 132px; height: 132px; border-radius: 28px; box-shadow: var(--shadow); margin-bottom: 28px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p.lead { font-size: clamp(1.05rem, 2.5vw, 1.3rem); color: var(--muted); max-width: 640px; margin: 0 auto 28px; }

.badges { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--teal); color: #fff; padding: 13px 22px;
  border-radius: 999px; font-weight: 600; font-size: 1rem;
}
.btn:hover { text-decoration: none; opacity: 0.92; }
.btn.ghost { background: transparent; color: var(--teal); border: 1px solid var(--line); }
.tf {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(43,196,166,.14); color: var(--teal);
  border: 1px solid rgba(14,92,86,.18);
  padding: 6px 14px; border-radius: 999px; font-weight: 600; font-size: .9rem;
}
.pill { font-size: 0.85rem; color: var(--muted); }

.rule { height: 6px; border: 0; margin: 0; background: linear-gradient(90deg, var(--teal) 0 33%, var(--mint) 33% 66%, var(--gold) 66% 100%); }

section { padding: 56px 0; }
section h2 { font-size: 1.7rem; text-align: center; margin: 0 0 8px; letter-spacing: -0.01em; }
section .sub { text-align: center; color: var(--muted); margin: 0 auto 36px; max-width: 580px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 22px; margin-bottom: 14px; }
.card h3 { margin: 0 0 6px; font-size: 1.12rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }
.ico.c1 { background: rgba(14,92,86,.12); }
.ico.c2 { background: rgba(43,196,166,.18); }
.ico.c3 { background: rgba(245,184,25,.18); }

.note { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); text-align: center; max-width: 700px; margin: 0 auto; }
.note strong { color: var(--ink); }

.doc { max-width: 760px; margin: 0 auto; padding: 48px 24px 64px; }
.doc h1 { font-size: 2rem; margin: 0 0 6px; }
.doc .updated { color: var(--muted); font-size: 0.9rem; margin-bottom: 32px; }
.doc h2 { font-size: 1.25rem; margin: 34px 0 10px; }
.doc p, .doc li { color: #34403d; }
.doc ul { padding-left: 22px; }
.faq { border-top: 1px solid var(--line); padding: 20px 0; }
.faq h3 { margin: 0 0 6px; font-size: 1.05rem; }
.faq p { margin: 0; color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 0.9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); text-decoration: none; }

@media (max-width: 520px) { .nav .navlink { display: none; } }