/* FamilyVault site stylesheet — 移動優先，品牌主色對齊 app（深青綠） */
:root {
  --primary: #0d7a6f;
  --primary-dark: #0a5f56;
  --ink: #1c2420;
  --muted: #5f6b66;
  --bg: #f6f8f7;
  --card: #ffffff;
  --edge: #e2e8e5;
  --danger: #c03333;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "PingFang TC", "Noto Sans TC", "Segoe UI", sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.65;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
a { color: var(--primary); }

/* header / nav */
.site-header { background: var(--card); border-bottom: 1px solid var(--edge); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 10px 16px; gap: 8px; }
.brand { font-weight: 800; font-size: 20px; color: var(--primary-dark); text-decoration: none; }
.site-header nav { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.site-header nav a { text-decoration: none; color: var(--muted); font-size: 14px; }
.site-header nav a.on { color: var(--primary-dark); font-weight: 700; }
.lang-switch { border: 1px solid var(--edge); border-radius: 999px; padding: 2px 10px; }

/* hero */
.hero { text-align: center; padding: 40px 0 16px; }
.hero h1 { font-size: 30px; margin: 0 0 10px; }
.lead { font-size: 17px; color: var(--muted); max-width: 640px; margin: 0 auto 18px; }
.cta { display: inline-block; background: var(--primary); color: #fff; padding: 12px 28px; border-radius: 12px; text-decoration: none; font-weight: 700; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; padding: 20px 0; }
.card { background: var(--card); border: 1px solid var(--edge); border-radius: 14px; padding: 18px; }
.card h3 { margin: 0 0 6px; color: var(--primary-dark); }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card.center { text-align: center; }

/* screenshots */
.shot { margin: 16px 0; text-align: center; }
.shot img { max-width: 280px; width: 100%; border-radius: 16px; border: 1px solid var(--edge); background: #e9eeec; min-height: 200px; }
.shot figcaption { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* guide steps */
.steps { padding-left: 0; list-style: none; counter-reset: step; }
.steps li { background: var(--card); border: 1px solid var(--edge); border-radius: 14px; padding: 18px; margin: 14px 0; }
.steps h2 { margin: 0 0 6px; font-size: 19px; color: var(--primary-dark); }

/* feature rows (octopus) */
.feature-row { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; background: var(--card); border: 1px solid var(--edge); border-radius: 14px; padding: 18px; margin: 14px 0; }
.feature-row > div { flex: 1 1 260px; }
.feature-row h2 { margin: 0 0 6px; font-size: 19px; color: var(--primary-dark); }
.feature-row .shot { margin: 0; flex: 0 0 240px; }

/* download */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; padding: 16px 0; }
.qr-placeholder { width: 160px; height: 160px; margin: 10px auto; border: 2px dashed var(--edge); border-radius: 12px; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--muted); font-weight: 700; }
.qr-placeholder span { font-weight: 400; font-size: 12px; }

/* legal pages */
.legal { background: var(--card); border: 1px solid var(--edge); border-radius: 14px; padding: 22px; margin: 16px 0; font-size: 15px; }
.legal h1 { font-size: 22px; }
.legal h2 { font-size: 17px; margin-top: 22px; color: var(--primary-dark); }
.legal .lang { color: var(--muted); font-size: 13px; }

.fineprint { font-size: 13px; color: var(--muted); }

/* footer */
.site-footer { border-top: 1px solid var(--edge); margin-top: 30px; padding: 18px 0; color: var(--muted); font-size: 13px; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.foot-links a { margin-left: 14px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 24px; }
  .feature-row .shot { flex-basis: 100%; }
}

/* role tags on feature cards + coming-soon card */
.role-tag { font-size: 11px; font-weight: 600; border-radius: 999px; padding: 1px 8px; vertical-align: middle; margin-left: 6px; white-space: nowrap; }
.role-tag.helper { background: #e3f2ef; color: #0d7a6f; }
.role-tag.family { background: #fdf0e5; color: #b25e09; }
.card.soon { border-style: dashed; opacity: 0.85; }
.card.soon h3 { color: var(--muted); }
.steps h3 { margin: 0 0 6px; font-size: 17px; color: var(--primary-dark); }

/* guide tabs */
.tabs { display: flex; margin: 14px 0; border-bottom: 2px solid var(--edge); }
.tab { flex: 1; text-align: center; background: none; border: none; padding: 8px 4px; font-size: 15px; font-weight: 600; color: var(--muted); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -2px; font-family: inherit; }
.tab.on { color: var(--primary-dark); border-bottom-color: var(--primary); }
.tab-panel[hidden] { display: none; }

/* QR blocks */
.qr-img { width: 160px; height: 160px; border-radius: 12px; border: 1px solid var(--edge); margin: 8px auto 0; display: block; background: #fff; padding: 8px; }
.dl-strip { margin: 10px 0 4px; }
.dl-strip h3 { color: var(--primary-dark); }