:root {
  --ivory: #FBF7F0;
  --surface: #FFFDF9;
  --surface-2: #F4ECE0;
  --apricot: #E8945F;
  --apricot-soft: #F6D9C4;
  --sage: #7FA37A;
  --sage-soft: #DCEAD8;
  --brown: #3D322A;
  --muted: #8A7E72;
  --line: #E6DACC;
  --shadow: 0 10px 30px rgba(61, 50, 42, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--ivory);
  color: var(--brown);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(251, 247, 240, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand .dot {
  width: 28px; height: 28px; border-radius: 9px;
  background: linear-gradient(135deg, var(--apricot), var(--sage));
  display: grid; place-items: center; color: #fff; font-size: 15px;
}
.nav-links { display: flex; gap: 22px; font-size: 15px; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--brown); text-decoration: none; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 56px; text-align: center; }
.hero .pill {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: var(--sage-soft); color: #4d6b49; font-size: 13px; font-weight: 600;
  margin-bottom: 22px;
}
.hero h1 { font-size: 46px; line-height: 1.15; letter-spacing: -0.5px; }
.hero h1 .en { display: block; font-size: 20px; font-weight: 600; color: var(--muted); margin-top: 10px; letter-spacing: 0; }
.hero p.sub { font-size: 18px; color: var(--muted); margin: 20px auto 32px; max-width: 560px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 16px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary { background: var(--brown); color: #fff; }
.btn-primary:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-ghost { background: var(--surface); color: var(--brown); border: 1px solid var(--line); }
.btn-ghost:hover { text-decoration: none; transform: translateY(-2px); }

/* ---------- Sections ---------- */
section { padding: 56px 0; }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title h2 { font-size: 30px; letter-spacing: -0.3px; }
.section-title p { color: var(--muted); margin-top: 8px; }

/* ---------- Feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 22px; box-shadow: var(--shadow);
}
.card .ico {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  font-size: 22px; margin-bottom: 16px;
}
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---------- Screenshots ---------- */
.shots { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.shot {
  aspect-ratio: 9 / 19; border-radius: 22px; border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  display: grid; place-items: center; color: var(--muted); font-size: 13px; text-align: center; padding: 10px;
}

/* ---------- Privacy / Support prose ---------- */
.prose { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px; box-shadow: var(--shadow); }
.prose h1 { font-size: 30px; margin-bottom: 6px; }
.prose .meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.prose h2 { font-size: 20px; margin: 30px 0 10px; padding-top: 14px; border-top: 1px solid var(--line); }
.prose h2:first-of-type { border-top: none; padding-top: 0; }
.prose p, .prose li { color: #51453c; font-size: 15.5px; }
.prose ul { padding-left: 22px; margin: 8px 0; }
.prose li { margin: 6px 0; }
.prose strong { color: var(--brown); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 14px; }
.qa { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; box-shadow: var(--shadow); }
.qa h3 { font-size: 16.5px; margin-bottom: 6px; color: var(--brown); }
.qa p { color: var(--muted); font-size: 15px; }

/* ---------- Contact box ---------- */
.contact {
  background: linear-gradient(135deg, var(--apricot-soft), var(--sage-soft));
  border-radius: var(--radius); padding: 32px; text-align: center;
}
.contact h3 { font-size: 22px; margin-bottom: 8px; }
.contact p { color: var(--brown); }
.contact a.mail { font-weight: 700; font-size: 18px; color: var(--brown); }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 30px 0; text-align: center; color: var(--muted); font-size: 14px; }
footer .links { display: flex; gap: 18px; justify-content: center; margin-bottom: 12px; }
footer .links a { color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .features { grid-template-columns: 1fr; }
  .shots { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 34px; }
  .prose { padding: 26px; }
  .nav-links { display: none; }
}