/* Design tokens. 2026-11-02: light theme, derived from the logo — the mark's
   gold (#C7A233) on white, with the navy the mark was drawn on (#1B2A4A) as
   the text colour.

   The logo gold is 2.43:1 on white, below the WCAG AA 4.5:1 floor for text,
   so it is used only where it is not text: the mark itself, rules, borders,
   checkbox tint and the button fill (navy text on gold is 5.85:1). Every gold
   piece of TEXT — links, eyebrows, the claim line — uses --accent-text, a
   darkened gold at 6.05:1. Ratios computed, not eyeballed. */
:root {
  --bg-base: #ffffff;
  --bg-surface: #f8f6f0;
  --bg-elevated: #ffffff;
  --bg-deep: #f3efe4;
  --border: #e4dfd2;
  --accent: #c7a233;
  --accent-hover: #b38f24;
  --accent-text: #7a5f12;
  --text-primary: #1b2a4a;
  --text-secondary: #3f4a5e;
  --text-quiet: #5e6676;
  --status-live: #276e4c;
  --status-upcoming: #7a5f12;
  --neg: #b03a3a;
  --maxw: 1200px;
  --gutter: 64px;
  --serif: Newsreader, Georgia, "Songti SC", serif;
  --sans: "IBM Plex Sans", "PingFang SC", "PingFang HK", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { padding: 0; margin: 0; }
body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
:lang(zh-Hans) body, :lang(zh-Hant) body { line-height: 1.85; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; line-height: 1.25; }
p { margin: 0; }
a { color: var(--accent-text); text-decoration: none; }
a:hover { color: var(--text-primary); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent-text); outline-offset: 2px;
}
table { border-collapse: collapse; width: 100%; }
img { max-width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 68px 0; border-bottom: 1px solid var(--border); }
.section--deep { background: var(--bg-deep); }
.section--deep .card { background: var(--bg-base); }
.eyebrow {
  color: var(--accent-text); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; font-family: var(--mono); display: block; margin-bottom: 10px;
}
.h2 { font-size: 32px; }
.lede { color: var(--text-secondary); font-size: 16px; max-width: 800px; }
.stack { display: flex; flex-direction: column; }
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: 4px; padding: 30px 28px;
}
.btn {
  display: inline-block; background: var(--accent); color: var(--text-primary);
  font-size: 14px; font-weight: 600; padding: 14px 28px; border-radius: 3px;
  border: 1px solid var(--accent); cursor: pointer; font-family: inherit;
  min-height: 44px;
}
.btn:hover { background: var(--accent-hover); color: var(--text-primary); }
.btn--ghost { background: transparent; color: var(--text-primary); border-color: var(--text-primary); }
.btn--ghost:hover { background: var(--text-primary); color: #ffffff; }
.tag {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  font-family: var(--mono); border: 1px solid currentColor; padding: 4px 10px; border-radius: 2px;
}
.mono { font-family: var(--mono); }
.quiet { color: var(--text-quiet); font-size: 12.5px; line-height: 1.7; }
.disclosure { border-top: 1px solid var(--border); padding-top: 22px; display: flex; flex-direction: column; gap: 12px; }

label { display: block; color: var(--text-secondary); font-size: 12.5px; margin-bottom: 6px; }
input[type="text"], input[type="email"], select, textarea {
  width: 100%; min-height: 44px; background: var(--bg-elevated); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 3px; padding: 10px 12px;
  font-family: inherit; font-size: 15px;
}
input[type="checkbox"], input[type="radio"] { width: 18px; height: 18px; accent-color: var(--accent); }

@media (max-width: 1023px) {
  :root { --gutter: 28px; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  :root { --gutter: 16px; }
  body { font-size: 16px; }
  .h2 { font-size: 26px; }
  .section { padding: 44px 0; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}
@media print {
  body { background: #fff; color: #000; }
  .no-print { display: none !important; }
}

/* ---- layout classes for the static build ---------------------------------- */
.nav { border-top: 3px solid var(--accent); border-bottom: 1px solid var(--border); }
.navbar { min-height: 72px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
.brand { font-family: var(--serif); font-size: 19px; color: var(--text-primary); letter-spacing: .02em; display: inline-flex; align-items: center; gap: 12px; }
/* The mark is sized in em so it tracks whatever type it sits beside, and it
   inherits colour, so it is gold in the header and quiet grey in the footer
   without a second copy of the artwork. */
.mark { height: 1.5em; width: auto; flex: 0 0 auto; color: var(--accent); }
.brand:hover .mark { color: var(--accent); }
.footmark { display: inline-flex; align-items: center; gap: 10px; }
.mark--foot { height: 1.25em; color: var(--text-quiet); }
@media (max-width: 520px) { .brand { font-size: 17px; gap: 9px; } }
.navlinks { display: flex; gap: 24px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.navlinks > a { color: var(--text-secondary); font-size: 14px; }
.navlinks > a.btn { color: var(--text-primary); }
.langs { display: flex; gap: 8px; }
.langs a { font-family: var(--mono); font-size: 12px; color: var(--text-quiet); }
.langs a.on { color: var(--text-primary); }
.btn--sm { padding: 10px 18px; font-size: 13px; min-height: 0; }
.btn--block { width: 100%; }

h1 { font-family: var(--serif); font-weight: 400; font-size: clamp(32px, 5vw, 58px); line-height: 1.14; max-width: 15ch; }
.hero-lede { color: var(--text-secondary); font-size: 18px; max-width: 70ch; margin-top: 22px; }
.btns { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.strip { border-bottom: 1px solid var(--border); }
.strip .wrap { display: flex; gap: 20px; flex-wrap: wrap; padding-top: 18px; padding-bottom: 18px; }
.strip span { color: var(--text-quiet); font-size: 12.5px; }
.head2 { margin-bottom: 28px; }
.head2 h2 { font-size: 32px; }
.center { text-align: center; display: block; }
.big { color: var(--text-secondary); font-size: 16.5px; max-width: 80ch; }
.bold { font-weight: 600; font-size: 16px; margin-bottom: 8px; }
.dim { color: var(--text-secondary); }
.it { font-style: italic; }
.mt { margin-top: 18px; }
.sub { color: var(--text-quiet); font-size: 13px; margin-top: 10px; display: block; }
.grow { flex-grow: 1; }
.note { border-left: 1px solid var(--border); padding-left: 16px; }
.topline { border-top: 1px solid var(--border); padding-top: 18px; }
.topline2 { border-top: 1px solid var(--border); padding-top: 16px; }

.cards2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.cards3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; align-items: stretch; }
.cards4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 22px; }
.scard { display: flex; flex-direction: column; gap: 12px; }
.scard h3 { font-size: 22px; }
.dashed { background: transparent; border-style: dashed; }
.more { font-size: 13.5px; border-top: 1px solid var(--border); padding-top: 14px; }
.tagline { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.tagline.up, .tag.up, .gold { color: var(--accent-text); }
.tagline.live, .tag.live { color: var(--status-live); }
.tag.dim { color: var(--text-quiet); }
.tags { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.claim { font-size: clamp(24px, 3vw, 32px); color: var(--accent-text); margin-top: 26px; max-width: 40ch; }
.dimclaim { color: var(--text-secondary); }
.clabel { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-secondary); display: block; }
.claimbox { border-top: 2px solid var(--border); padding-top: 20px; }
.claimbox.gold { border-top-color: var(--accent); }
.cbody { font-size: 21px; margin-top: 10px; line-height: 1.5; }
.card.gold { border-color: var(--accent); }
.card ul { padding-left: 18px; margin: 10px 0; }
.foot-it { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 12px; font-style: italic; font-size: 14px; }
.tradeoff { font-size: 17px; max-width: 80ch; margin-top: 22px; border-left: 2px solid var(--accent); padding-left: 20px; }
.gateband { display: flex; gap: 32px; flex-wrap: wrap; align-items: center; background: var(--bg-surface); padding: 28px 30px; border-radius: 4px; }
.gateband p { flex-grow: 1; font-size: 16.5px; min-width: 280px; }
.sma { background: var(--bg-surface); border-left: 2px solid var(--accent); padding: 22px 26px; margin-top: 28px; display: flex; gap: 24px; flex-wrap: wrap; align-items: center; }
.sma > div { flex-grow: 1; min-width: 280px; }
.split { display: flex; gap: 48px; flex-wrap: wrap; }
.splitl { width: 280px; flex-shrink: 0; }
.splitr { flex-grow: 1; flex-basis: 420px; display: flex; flex-direction: column; gap: 18px; }
.formcol { max-width: 480px; }
.formcol.wide { max-width: 620px; }
.providers { display: flex; gap: 48px; flex-wrap: wrap; margin-top: 18px; }
.plabel { display: block; color: var(--text-quiet); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.pval { font-size: 17px; }

.foot { border-top: 1px solid var(--border); padding: 40px 0 32px; }
.footcols { display: flex; gap: 48px; flex-wrap: wrap; margin-bottom: 24px; }
.footcols > div { display: flex; flex-direction: column; gap: 7px; min-width: 160px; }
.footbrand { flex-grow: 1; min-width: 260px; }
.footcols a { color: var(--text-secondary); font-size: 13px; }
.fh { color: var(--text-primary); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.disclosure strong { font-size: 12.5px; }

.legalsec { margin-bottom: 40px; }
.legalsec h2 { font-size: 22px; margin-bottom: 16px; }
.lg { font-size: 14.5px; line-height: 1.85; margin-bottom: 14px; }
.xlate { border: 1px solid var(--accent); color: var(--accent-text); padding: 14px 18px; border-radius: 3px; font-size: 13.5px; margin: 20px 0 32px; }
.stack { display: flex; flex-direction: column; gap: 16px; max-width: 72ch; margin-top: 22px; }

/* ---- form ---------------------------------------------------------------- */
.form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; }
.field legend { color: var(--text-secondary); font-size: 12.5px; padding: 0; margin-bottom: 8px; }
fieldset.field { border: 0; padding: 0; margin: 0; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.radios { display: flex; gap: 20px; flex-wrap: wrap; }
textarea { resize: vertical; min-height: 110px; line-height: 1.6; }
.radio { display: flex; align-items: center; gap: 8px; }
.radio label { margin: 0; color: var(--text-primary); font-size: 14px; }
.consents { border-top: 1px solid var(--border); padding-top: 16px; display: flex; flex-direction: column; gap: 12px; }
/* One rule, not one per instance: a checkbox is never stretched by a sibling
   width rule, never centred above its label, never re-skinned by appearance. */
.consent { display: flex; align-items: flex-start; gap: 10px; margin: 0; cursor: pointer;
  color: var(--text-secondary); font-size: 13.5px; line-height: 1.6; }
.consent input[type="checkbox"] { flex: 0 0 18px; margin: 3px 0 0; }
input[type="checkbox"], input[type="radio"] {
  appearance: auto; -webkit-appearance: auto;
  inline-size: 18px; block-size: 18px;
  min-inline-size: 18px; min-block-size: 18px;
  max-inline-size: 18px; max-block-size: 18px;
  padding: 0; border-radius: 0; background: none; align-self: flex-start;
  accent-color: var(--accent);
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.err { color: var(--neg); font-size: 14px; }
.ok { border-color: var(--status-live); }
.no { border-color: var(--neg); }
.okt { font-weight: 600; margin-bottom: 12px; }
.ok a { margin-top: 18px; display: inline-block; }

/* ---- gate ---------------------------------------------------------------- */
.gate { position: fixed; inset: 0; background: rgba(27,42,74,.6); z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 16px; overflow-y: auto; }
.gate[hidden] { display: none; }
.gatebox { width: 100%; max-width: 620px; background: var(--bg-base); border: 1px solid var(--border);
  border-radius: 5px; padding: 40px 36px; display: flex; flex-direction: column; gap: 18px; }
.gatebox h2 { font-size: 26px; text-align: center; }
.gatebox p { color: var(--text-secondary); font-size: 14.5px; }
.ack { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 3px;
  padding: 16px 18px; display: flex; gap: 12px; align-items: flex-start; }
.ack label { margin: 0; color: var(--text-primary); font-size: 13.5px; }
.gatebtns { display: flex; gap: 12px; flex-wrap: wrap; }
.gatebtns .btn { flex-grow: 1; text-align: center; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

@media (max-width: 1023px) { .cards4, .cards3 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 767px) {
  .cards2, .cards3, .cards4, .row2 { grid-template-columns: minmax(0,1fr); }
  .splitl { width: 100%; }
  .head2 h2 { font-size: 26px; }
  h1 { max-width: none; }
}