:root {
  --gold: #c4a574;
  --gold-deep: #9a7b4f;
  --gold-soft: #d4c0a4;
  --gold-fill: #c9b396;
  --gold-fill-hover: #bba585;
  --ink: #5c584f;
  --ink-strong: #3d3a34;
  --muted: #7a746a;
  --line: #efe6d8;
  --cream: #fbf8f3;
  --white: #fff;
  --danger: #b42318;
  --header-h: 84px;
  --serif: "Cormorant Garamond", "Songti TC", "Noto Serif TC", serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, "Courier New", monospace;
  --sans: "Source Sans 3", "Noto Sans TC", "PingFang HK", "Microsoft JhengHei", sans-serif;
  --shadow: 0 18px 40px rgba(90, 70, 40, 0.08);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--white); line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font-family: inherit; }
.site-header { position: sticky; top: 0; z-index: 50; height: var(--header-h); background: rgba(255,255,255,.96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1240px; margin: 0 auto; padding: 0 32px; height: 100%; display: flex; align-items: center; gap: 28px; position: relative; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand > span { display: flex; flex-direction: column; }
.brand img { width: 46px; height: 52px; object-fit: contain; }
.brand-kicker { font-size: 11px; letter-spacing: .18em; color: var(--gold-deep); font-weight: 600; }
.brand-name { font-family: var(--serif); font-size: 22px; font-weight: 500; color: var(--gold); letter-spacing: .08em; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 14px; color: var(--gold-deep); position: relative; padding: 6px 0; }
.nav a.is-active::after, .nav a:hover::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--gold); }
.lang-toggle, .menu-btn { border: 0; background: transparent; color: var(--gold-deep); cursor: pointer; }
.lang-toggle { font-size: 13px; }
.btn-donate { border: 1px solid var(--gold); color: var(--gold-deep); border-radius: 999px; padding: 12px 28px; font-size: 13px; background: transparent; transition: .2s ease; white-space: nowrap; }
.nav .btn-donate { padding: 12px 28px; margin-left: 8px; }
.nav .btn-donate::after { content: none; }
.btn-donate:hover { background: var(--gold-fill); color: #fff; border-color: var(--gold-fill); }
.menu-btn { display: none; font-size: 22px; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 32px; }
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: start; padding: 72px 0 48px; }
.hero-brand { margin: 0 0 10px; font-family: var(--serif); font-size: 13px; font-weight: 600; letter-spacing: .28em; color: var(--gold-deep); }
.hero-motto { font-family: "Noto Serif TC", "Songti TC", var(--serif); font-weight: 500; font-size: clamp(40px, 5vw, 58px); color: var(--gold); letter-spacing: .06em; margin: 0 0 28px; line-height: 1.15; }
html[lang="zh-Hant"] .hero-motto { display: flex; flex-direction: column; align-items: flex-start; font-size: clamp(30px, 3.8vw, 42px); letter-spacing: .22em; line-height: 1.5; margin: 0 0 24px; }
html[lang="zh-Hant"] .hero-motto-sep { display: block; width: 42px; height: 1px; margin: 8px 0 10px; overflow: hidden; color: transparent; background: var(--gold); }
html[lang="en"] .hero-motto { font-family: var(--serif); }
.hero-copy p { margin: 0 0 16px; color: var(--muted); font-size: 16px; max-width: 520px; }
html[lang="zh-Hant"] .hero-copy p { max-width: none; font-size: 15px; line-height: 1.9; text-align: justify; }
.hero-photo { border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); }
.hero-photo img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }
.section-kicker { font-family: var(--serif); font-style: italic; text-align: center; color: var(--gold); font-size: 36px; margin: 28px 0 36px; font-weight: 400; }
.impact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding-bottom: 80px; }
.impact-card { display: flex; flex-direction: column; color: var(--ink); background: transparent; }
.impact-card img { width: 100%; height: 240px; object-fit: cover; border-radius: 22px; }
.impact-copy { padding: 16px 4px 0; }
.impact-card h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 28px; font-weight: 500; color: var(--gold); }
.impact-card p { margin: 0; font-size: 14px; color: var(--muted); }
.gold-band { background: var(--cream); padding: 48px 0; text-align: center; }
.gold-band p { max-width: 720px; margin: 0 auto; color: var(--muted); }
.jubilee { font-family: var(--serif); color: var(--gold); font-size: 20px; letter-spacing: .2em; margin-bottom: 8px; }
.site-footer { border-top: 1px solid var(--line); padding: 48px 0 28px; color: var(--muted); font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-grid h4 { margin: 0 0 12px; color: var(--gold-deep); font-weight: 600; font-size: 14px; }
.footer-grid a { display: block; margin: 6px 0; color: var(--gold-deep); }
.copyright { border-top: 1px solid var(--line); padding-top: 18px; font-size: 12px; }
.page-donate { padding: 56px 0 80px; }
.donate-hero { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; margin-bottom: 64px; }
.donate-actions { display: flex; flex-direction: column; gap: 18px; }
.big-card { display: grid; place-items: center; min-height: 120px; border-radius: 22px; background: var(--gold-fill); color: #fff; font-family: var(--serif); font-size: 32px; transition: .2s ease; }
.big-card:hover { background: var(--gold-fill-hover); }
.donate-copy h1 { font-family: var(--serif); font-weight: 400; font-size: clamp(32px, 4vw, 44px); color: var(--gold); line-height: 1.25; margin: 0 0 20px; }
.donate-copy h2 { font-family: var(--serif); color: var(--gold); font-size: 22px; font-weight: 500; margin: 28px 0 8px; }
.donate-copy p, .note-list li { color: var(--muted); font-size: 15px; }
#form { scroll-margin-top: calc(var(--header-h) + 20px); }
.form-panel { background: var(--cream); border-radius: 28px; padding: 36px 36px 44px; }
.steps { display: flex; gap: 8px; margin-bottom: 28px; flex-wrap: wrap; }
.step-pill { flex: 1; min-width: 108px; background: #efe4d3; color: var(--gold-deep); border-radius: 999px; padding: 8px 12px; font-size: 12px; text-align: center; }
.step-pill.is-on { background: var(--gold-fill); color: #fff; }
.form-step { display: none; }
.form-step.is-on { display: block; }
.form-step h2 { font-family: var(--serif); color: var(--gold-deep); font-size: 28px; font-weight: 500; margin: 0 0 8px; }
.hint { color: var(--muted); font-size: 14px; margin: 0 0 22px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; color: var(--ink-strong); margin-bottom: 8px; font-weight: 600; }
.req { color: var(--danger); margin-left: 4px; }
.field input, .field textarea, .field select { width: 100%; border: 1px solid #e4d8c6; background: #fff; border-radius: 12px; padding: 12px 14px; font-size: 15px; color: var(--ink-strong); }
.field textarea { min-height: 88px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: 2px solid var(--gold-soft); border-color: var(--gold); }
.choice-row, .chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.choice, .chip, .check-card { border: 1px solid #e4d8c6; background: #fff; cursor: pointer; }
.choice, .chip, .check-card { position: relative; }
.choice, .chip { border-radius: 999px; padding: 10px 16px; font-size: 14px; }
.thanks .btn-donate { display: inline-flex; margin-top: 18px; }
.choice input, .chip input, .check-card input { position: absolute; opacity: 0; pointer-events: none; }
.choice:has(input:checked), .chip:has(input:checked), .check-card:has(input:checked) { background: var(--gold-fill); color: #fff; border-color: var(--gold-fill); }
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.check-card { position: relative; border-radius: 18px; padding: 22px 20px; min-height: 150px; }
.check-card h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 22px; font-weight: 500; }
.check-card p { margin: 0; font-size: 14px; color: var(--muted); }
.check-card:has(input:checked) p { color: rgba(255,255,255,.9); }
.form-actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; }
.btn { border: 0; border-radius: 999px; padding: 12px 22px; cursor: pointer; font-size: 15px; }
.btn-ghost { background: transparent; color: var(--gold-deep); border: 1px solid var(--gold); }
.btn-primary { background: var(--gold-fill); color: #fff; margin-left: auto; }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; }
.error { color: var(--danger); font-size: 13px; margin-top: 6px; display: none; }
.field.has-error .error { display: block; }
.review { background: #fff; border-radius: 16px; padding: 18px 20px; font-size: 14px; }
.review dt { color: var(--gold-deep); font-weight: 600; margin-top: 10px; }
.review dd { margin: 0; }
.review dd.ref-val { font-family: var(--mono); font-weight: 600; letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.status { display: none; margin-top: 16px; padding: 12px 14px; border-radius: 12px; background: #fff; }
.status.is-on { display: block; }
.thanks { min-height: 60vh; display: grid; place-items: center; text-align: center; padding: 80px 20px; }
.thanks h1 { font-family: var(--serif); color: var(--gold); font-size: 48px; margin: 0 0 16px; }
.thanks-card { width: min(640px, 100%); }
.thanks-card > p { color: var(--muted); }
.ref-box { margin: 28px 0; padding: 18px 20px; border-radius: 16px; background: var(--cream); }
.ref-box span { display: block; font-size: 13px; letter-spacing: .12em; color: var(--gold-deep); text-transform: uppercase; }
.ref-box strong { display: block; font-family: var(--mono); font-size: 30px; font-weight: 600; color: var(--gold); margin: 6px 0 8px; letter-spacing: .16em; font-variant-numeric: tabular-nums; }
.ref-box p { margin: 0; font-size: 14px; color: var(--muted); }
.slip-panel { text-align: left; margin: 0 0 28px; padding: 22px; border-radius: 18px; background: var(--cream); }
.slip-panel h2 { font-family: var(--serif); color: var(--gold-deep); font-size: 24px; font-weight: 500; margin: 0 0 8px; }
.slip-panel p { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
#slip-frame { width: 100%; height: 400px; border: 0; background: transparent; }
.form-step[data-step="5"] .ref-box { background: #fff; margin: 0 0 16px; }
.form-step[data-step="5"] .hint { margin-bottom: 14px; }
.bank-box { margin: 0 0 16px; padding: 18px 20px; border-radius: 16px; background: #fff; }
.bank-box span { display: block; font-size: 13px; letter-spacing: .12em; color: var(--gold-deep); text-transform: uppercase; margin-bottom: 10px; }
.bank-box dl { margin: 0; display: grid; grid-template-columns: 7.5em 1fr; gap: 6px 12px; font-size: 14px; }
.bank-box dt { color: var(--gold-deep); font-weight: 600; }
.bank-box dd { margin: 0; color: var(--ink-strong); word-break: break-word; }
.bank-box dd.ac-no { font-family: var(--mono); font-weight: 600; letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.slip-panel .btn-primary { margin-left: 0; display: inline-flex; }
.hidden-other { display: none; margin-top: 10px; }
.hidden-other.is-on { display: block; }
@media (max-width: 900px) {
  .header-inner, .wrap { padding-left: 18px; padding-right: 18px; }
  .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 16px 20px 24px; border-bottom: 1px solid var(--line); gap: 14px; }
  .nav.is-open { display: flex; }
  .menu-btn { display: block; margin-left: auto; }
  .hero, .donate-hero, .impact-grid, .check-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero-photo img { min-height: 260px; }
  .form-panel { padding: 22px 16px 28px; }
}