/* Manna · app.manna.garden — shared styles
   Brand palette mirrors the iOS app (Tokens.swift, light mode). */

@font-face { font-family:"OPPO Sans"; src:url("fonts/OPPOSans-Regular.woff2") format("woff2"); font-weight:400; font-display:swap; }
@font-face { font-family:"OPPO Sans"; src:url("fonts/OPPOSans-Medium.woff2")  format("woff2"); font-weight:500; font-display:swap; }
@font-face { font-family:"OPPO Sans"; src:url("fonts/OPPOSans-Bold.woff2")    format("woff2"); font-weight:700; font-display:swap; }
@font-face { font-family:"OPPO Sans"; src:url("fonts/OPPOSans-Heavy.woff2")   format("woff2"); font-weight:800; font-display:swap; }

:root {
  --green:      #1E5C3A;
  --green-deep: #143F28;
  --gold:       #E9B340;
  --gold-soft:  #F2D183;
  --cream:      #F5F0E4;
  --card:       #FFFCF5;
  --text:       #2D3328;
  --muted:      #7A7464;
  --divider:    #E0D9C7;
  --radius:     18px;
  --maxw:       760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "OPPO Sans", -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---- Top nav ---- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; max-width: 1080px; margin: 0 auto;
}
.nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--green); }
.nav .brand img { width: 30px; height: 30px; }
.nav .links a { color: var(--muted); font-size: 14px; margin-left: 18px; }

/* ---- Hero ---- */
.hero {
  text-align: center;
  background: linear-gradient(160deg, var(--green) 0%, var(--green-deep) 100%);
  color: var(--cream);
  padding: 64px 22px 72px;
  border-bottom-left-radius: 36px;
  border-bottom-right-radius: 36px;
}
.hero img.mark { width: 76px; height: 76px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(34px, 7vw, 52px); margin: 0 0 6px; letter-spacing: -0.5px; }
.hero .zh { color: var(--gold); font-weight: 600; font-size: 18px; }
.hero p.tag { color: rgba(245,240,228,0.88); font-size: clamp(16px, 3.5vw, 20px); margin: 14px auto 30px; max-width: 460px; }

.btn {
  display: inline-block; background: var(--gold); color: var(--green-deep);
  font-weight: 700; padding: 14px 30px; border-radius: 999px; font-size: 16px;
}
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn.ghost { background: transparent; color: var(--cream); border: 1.5px solid rgba(245,240,228,0.5); }
.btn-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.note { color: rgba(245,240,228,0.7); font-size: 13px; margin-top: 16px; }

/* ---- Sections ---- */
section { padding: 56px 0; }
section h2 { font-size: 28px; color: var(--green); text-align: center; margin: 0 0 8px; }
section .sub { text-align: center; color: var(--muted); margin: 0 0 36px; }

.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 560px){ .features { grid-template-columns: 1fr; } }
.feature {
  background: var(--card); border: 1px solid var(--divider);
  border-radius: var(--radius); padding: 22px;
}
.feature .ico { font-size: 24px; }
.feature h3 { margin: 10px 0 4px; font-size: 17px; color: var(--text); }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }

/* premium strip */
.premium {
  background: var(--green); color: var(--cream); border-radius: var(--radius);
  padding: 30px 26px; text-align: center;
}
.premium h3 { color: var(--gold); margin: 0 0 6px; font-size: 20px; }
.premium ul { list-style: none; padding: 0; margin: 14px 0 0; }
.premium li { padding: 5px 0; color: rgba(245,240,228,0.92); }

/* ---- Legal / content pages ---- */
.doc { padding: 40px 0 64px; }
.doc h1 { color: var(--green); font-size: 30px; margin-bottom: 4px; }
.doc .eff { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.doc h2 { color: var(--green); font-size: 20px; margin: 30px 0 8px; }
.doc ul { padding-left: 20px; }
.doc li { margin: 4px 0; }
.doc strong { color: var(--text); }

.langtoggle { display: inline-flex; gap: 2px; background: var(--divider); border-radius: 999px; padding: 3px; margin-bottom: 26px; }
.langtoggle button {
  border: 0; background: transparent; color: var(--muted); font: inherit;
  padding: 6px 16px; border-radius: 999px; cursor: pointer; font-size: 14px;
}
.langtoggle button.active { background: var(--card); color: var(--green); font-weight: 600; }
[data-lang]{ display: none; }
[data-lang].show { display: block; }

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--divider); margin-top: 20px;
  padding: 30px 22px; text-align: center; color: var(--muted); font-size: 13px;
}
footer a { color: var(--muted); margin: 0 10px; }
footer .brand { color: var(--green); font-weight: 700; display: block; margin-bottom: 8px; }