/* Yoto 小幫手：共用外殼（大V生活 Design System v1） */
:root {
  --cream: #FBF7F1;
  --oat: #F4ECDF;
  --sand: #E8DCC6;
  --taupe: #B8A88E;
  --saffron: #FFAD01;
  --saffron-deep: #E69500;
  --saffron-soft: #FFD27A;
  --saffron-tint: #FFF1D6;
  --terracotta: #D97757;
  --terracotta-deep: #B85C3E;
  --sage: #A8B89B;
  --sage-deep: #7E9170;
  --sage-soft: #D1DAC6;
  --ink: #3D3530;
  --ink-2: #5E544D;
  --ink-3: #8A7F75;
  --ink-4: #B8A88E;
  --border: #EADFCB;
  --border-soft: #F1E8D6;
  --shadow-sm: 0 1px 2px rgba(61,53,48,.04), 0 2px 6px rgba(61,53,48,.05);
  --shadow-md: 0 4px 10px rgba(61,53,48,.06), 0 10px 24px rgba(61,53,48,.07);
  --ease: cubic-bezier(.22,.8,.36,1);
  --font-display: 'CuXianTi', 'Noto Sans TC', 'PingFang TC', sans-serif;
  --font-body: 'Noto Sans TC', 'Nunito', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --font-num: 'Nunito', 'Noto Sans TC', sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

img { max-width: 100%; display: block; }

/* 有設 display 的元素也要能用 hidden 藏起來 */
[hidden] { display: none !important; }

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

a { color: var(--terracotta-deep); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251,247,241,.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-dot {
  width: 26px; height: 26px;
  border-radius: 8px;
  background: var(--saffron);
  display: grid; place-items: center;
  font-size: 15px;
}
.site-nav { display: flex; gap: 4px; }
.site-nav a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 999px;
}
.site-nav a[aria-current="page"] {
  background: var(--ink);
  color: #fff;
}
.site-nav a.soon { color: var(--ink-4); pointer-events: none; }

/* ---------- layout ---------- */
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.35;
  margin: 8px 0 8px;
}
.hero p { margin: 0; color: var(--ink-2); }

.chip {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  background: var(--ink);
  color: #fff;
  padding: 3px 10px;
  border-radius: 999px;
}

.section { margin-top: 32px; }
.section-title {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 0 0 4px;
}
.section-sub { margin: 0 0 12px; color: var(--ink-3); font-size: 14px; }

.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

/* ---------- buttons ---------- */
.btn {
  appearance: none;
  border: 0;
  font: inherit;
  font-weight: 700;
  font-size: 15px;
  border-radius: 999px;
  padding: 10px 16px;
  min-height: 44px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  transition: background 160ms var(--ease), transform 160ms var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--saffron); color: var(--ink); }
.btn-primary:hover { background: var(--saffron-deep); }
.btn-ghost { background: var(--oat); color: var(--ink); }
.btn-ghost:hover { background: var(--sand); }
.btn-done { background: var(--sage-soft); color: var(--ink); }

/* ---------- toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  transition: opacity 280ms var(--ease), transform 280ms var(--ease);
  max-width: calc(100% - 32px);
  text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.site-footer {
  text-align: center;
  font-size: 13px;
  color: var(--ink-3);
  padding: 0 16px 32px;
}