:root {
  color-scheme: light;
  --ink: #171e34;
  --muted: #687087;
  --paper: #f5f3ed;
  --card: #fffef9;
  --soft: #eeece4;
  --line: #d5d4cd;
  --coral: #ed735f;
  --coral-ink: #a53f30;
  --violet: #7652ca;
  --blue: #2679b9;
  --green: #398a70;
  --shadow: rgba(23, 30, 52, .11);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(23, 30, 52, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 30, 52, .045) 1px, transparent 1px),
    var(--paper);
  background-size: 24px 24px;
  font-size: 16px;
  line-height: 1.72;
}
a { color: var(--ink); text-underline-offset: .18em; }
a:hover { color: var(--coral-ink); }
img { max-width: 100%; }
code { padding: .1em .32em; background: var(--soft); font: .9em/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
.site-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 10; top: 8px; left: 8px; padding: 9px 12px; color: white; background: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { border-bottom: 2px solid var(--ink); background: rgba(245, 243, 237, .94); }
.nav-wrap { display: flex; min-height: 70px; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 1.12rem; font-weight: 900; letter-spacing: -.025em; text-decoration: none; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--ink); border-radius: 9px; box-shadow: 3px 3px 0 var(--shadow); }
.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 22px; font: 750 .78rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .04em; }
.site-nav a { text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--coral-ink); text-decoration: underline; text-decoration-thickness: 2px; }
.language-strip { background: var(--card); border-bottom: 1px solid var(--line); }
.language-tabs { display: flex; justify-content: flex-end; gap: 8px; padding-block: 10px 13px; }
.language-tab {
  appearance: none;
  min-width: 112px;
  min-height: 38px;
  padding: 7px 14px;
  border: 1px solid var(--ink);
  border-radius: 0;
  color: var(--ink);
  background: var(--card);
  box-shadow: 3px 3px 0 var(--shadow);
  font: 850 .76rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  cursor: pointer;
  transition: background .12s, box-shadow .12s, color .12s, transform .12s;
}
.language-tab:hover { background: var(--soft); transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.language-tab[aria-selected="true"] { position: relative; z-index: 1; color: white; background: var(--ink); box-shadow: 3px 3px 0 var(--coral); }
.language-tab[aria-selected="true"]:hover { color: white; background: var(--ink); box-shadow: 4px 4px 0 var(--coral); }
.language-tab:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--coral); }
.language-tab:focus-visible { position: relative; z-index: 2; outline: 3px solid var(--coral); outline-offset: 2px; }
[role="tabpanel"]:focus { outline: none; }

.hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 34px; padding-block: 62px 44px; border-bottom: 2px solid var(--ink); }
.hero-copy { min-width: 0; }
.eyebrow { margin: 0 0 12px; color: var(--coral-ink); font: 800 .76rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .2em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(3.5rem, 7.5vw, 6.9rem); line-height: 1.02; letter-spacing: -.045em; }
h1 .outline { color: transparent; -webkit-text-stroke: 2px var(--ink); text-shadow: 3px 3px 0 rgba(23, 30, 52, .12); }
.hero-intro { align-self: end; margin: 0; padding-left: 22px; border-left: 5px solid var(--coral); font-size: 1.08rem; }
.hero-intro strong { display: block; margin-bottom: 8px; font-size: 1.18rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 9px 16px; border: 1px solid var(--ink); color: white; background: var(--ink); font-weight: 850; text-decoration: none; }
.button:hover { color: var(--ink); background: var(--coral); transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
.button.secondary { color: var(--ink); background: var(--card); }
.status-line { margin: 17px 0 0; color: var(--muted); font: .78rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; }

main { padding-block: 36px 58px; }
.section-heading { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 14px; margin: 0 0 18px; }
.section-heading .rule { height: 1px; background: var(--line); }
.section-label { margin: 0; font: 800 .78rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .16em; text-transform: uppercase; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.tool-card { --accent: var(--coral); min-width: 0; padding: 26px; background: var(--card); border: 1px solid var(--line); border-top: 7px solid var(--accent); box-shadow: 7px 7px 0 var(--shadow); }
.accent-violet { --accent: var(--violet); }
.accent-blue { --accent: var(--blue); }
.accent-green { --accent: var(--green); }
.card-heading { display: flex; gap: 15px; align-items: center; margin-bottom: 18px; }
.index { display: grid; width: 50px; height: 50px; flex: 0 0 auto; place-items: center; color: white; background: var(--accent); border-radius: 50%; font: 850 .92rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.tool-card:not(.accent-violet):not(.accent-blue):not(.accent-green) .index { color: var(--ink); }
h2, h3, p { margin-top: 0; }
h2 { margin-bottom: 4px; font-size: clamp(1.4rem, 2.4vw, 2rem); line-height: 1.18; letter-spacing: -.035em; }
h3 { margin: 22px 0 5px; font-size: 1.02rem; line-height: 1.45; }
.card-heading p { margin: 0; color: var(--muted); font-size: .88rem; line-height: 1.5; }
.tool-card > p:last-child, .tool-card > ul:last-child { margin-bottom: 0; }
.tool-card ul, .tool-card ol { margin: 8px 0 0; padding-left: 1.2em; }
.tool-card li + li { margin-top: 7px; }
.en { color: var(--muted); font-size: .91em; }

.split-band { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; margin-top: 36px; }
.statement { padding: 28px; color: white; background: var(--ink); border: 1px solid var(--ink); box-shadow: 7px 7px 0 rgba(237, 115, 95, .42); }
.statement h2 { font-size: clamp(1.8rem, 4vw, 3.1rem); }
.statement a { color: white; }
.fact-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; padding: 1px; background: var(--line); }
.fact { padding: 18px; background: var(--card); }
.fact b { display: block; font: 850 .76rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .07em; text-transform: uppercase; }
.fact span { color: var(--muted); font-size: .9rem; }

.page-hero { padding-block: 50px 34px; border-bottom: 2px solid var(--ink); }
.page-hero h1 { max-width: 900px; font-size: clamp(3rem, 7vw, 6.3rem); }
.page-hero .intro { max-width: 760px; margin: 20px 0 0; padding-left: 20px; border-left: 5px solid var(--coral); font-size: 1.03rem; }
.page-meta { margin: 14px 0 0; color: var(--muted); font: .78rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; }
.language-stack { display: grid; gap: 26px; }
.language-card { padding: 30px; background: var(--card); border: 1px solid var(--line); border-top: 7px solid var(--coral); box-shadow: 7px 7px 0 var(--shadow); }
.language-card[lang="en"] { border-top-color: var(--violet); }
.language-card > h2 { display: flex; align-items: center; gap: 12px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.language-card > h2::before { content: "ZH"; display: grid; width: 42px; height: 42px; place-items: center; color: var(--ink); background: var(--coral); border-radius: 50%; font: 850 .72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.language-card[lang="en"] > h2::before { content: "EN"; color: white; background: var(--violet); }
.policy-grid, .support-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 24px; }
.policy-grid section, .support-grid section { min-width: 0; padding: 0 0 16px; border-bottom: 1px solid var(--line); }
.policy-grid .wide, .support-grid .wide { grid-column: 1 / -1; }
.contact-card { margin-top: 26px; padding: 24px; background: var(--soft); border-left: 6px solid var(--green); }
.contact-card p:last-child { margin-bottom: 0; }
.faq { margin: 0; }
.faq dt { margin-top: 18px; font-weight: 850; }
.faq dd { margin: 4px 0 0; color: var(--muted); }

.site-footer { padding-block: 26px 48px; border-top: 1px solid var(--line); color: var(--muted); font: .74rem/1.7 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .04em; }
.footer-wrap { display: flex; justify-content: space-between; gap: 18px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.site-footer a { color: var(--muted); }

@media (max-width: 900px) {
  .site-shell { width: min(100% - 32px, 760px); }
  .hero { grid-template-columns: 1fr; }
  .hero-intro { max-width: 620px; }
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-band { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-shell { width: calc(100% - 32px); }
  .nav-wrap { min-height: 62px; gap: 12px; }
  .brand span { display: none; }
  .site-nav { gap: 5px 13px; font-size: .69rem; }
  .language-tabs { padding-block: 7px; }
  .language-tab { min-width: 96px; min-height: 34px; padding: 6px 10px; font-size: .7rem; }
  .hero { gap: 10px; padding: 16px 0 14px; }
  .eyebrow { margin-bottom: 6px; font-size: .625rem; }
  h1 { font-size: 2.25rem; line-height: 1.02; letter-spacing: -.02em; }
  h1 .outline { -webkit-text-stroke-width: 1.5px; text-shadow: 2px 2px 0 rgba(23, 30, 52, .12); }
  .hero-intro { margin: 0; padding: 0 12px 0 0; border: 0; border-right: 4px solid var(--coral); font-size: .8125rem; line-height: 1.6; text-align: right; }
  .hero-intro strong { margin-bottom: 2px; font-size: .9rem; }
  .hero-actions { margin-top: 10px; justify-content: flex-end; }
  .hero-actions, .status-line, .hero-intro .en { display: none; }
  .button { min-height: 38px; padding: 7px 11px; font-size: .78rem; }
  main { padding-block: 26px 44px; }
  .card-grid, .policy-grid, .support-grid { grid-template-columns: 1fr; }
  .policy-grid .wide, .support-grid .wide { grid-column: auto; }
  .tool-card, .language-card { padding: 20px; box-shadow: 4px 4px 0 var(--shadow); }
  .split-band { margin-top: 28px; }
  .statement { padding: 22px; box-shadow: 4px 4px 0 rgba(237, 115, 95, .42); }
  .page-hero { padding-block: 28px 22px; }
  .page-hero h1 { font-size: 2.45rem; }
  .page-hero .intro { margin-top: 12px; padding-left: 12px; font-size: .9rem; }
  .footer-wrap { display: grid; }
}

@media (max-width: 420px) {
  h1 { font-size: 1.875rem; }
  .card-grid { grid-template-columns: minmax(0, 1fr); }
  .fact-list { grid-template-columns: 1fr; }
  .site-nav a:first-child { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button:hover, .language-tab:hover, .language-tab:active { transform: none; }
}