* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--page); color: var(--ink); font: 16px/1.7 "Noto Sans HK", "PingFang HK", "Microsoft JhengHei", system-ui, sans-serif; }
a { color: inherit; }
.wrap { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
a:focus-visible { outline: 3px solid var(--primary-strong); outline-offset: 5px; }
.skip-link { position: absolute; left: 16px; top: 8px; transform: translateY(-150%); padding: 8px 16px; background: var(--ink); color: var(--paper); z-index: 2; }
.skip-link:focus { transform: none; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 80px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 12px; align-items: center; text-decoration: none; }
.brand-icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--ink); color: var(--paper); }
.brand-icon svg { width: 24px; height: 24px; }
.brand-name { display: block; font-weight: 800; line-height: 1.4; }
.brand small { display: block; color: var(--muted); font-size: 10px; letter-spacing: .14em; }
.topbar nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; text-underline-offset: 5px; }
.intro { padding: 64px 0 48px; max-width: 760px; }
.eyebrow { margin: 0 0 16px; color: var(--primary-strong); font-size: 12px; font-weight: 750; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(36px, 5vw, 56px); line-height: 1.3; letter-spacing: -.04em; }
.intro-copy { margin: 20px 0 0; color: var(--muted); font-size: 17px; }
.tools { padding: 8px 0 80px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
h2 { margin: 0; font-size: 22px; }
.section-note { color: var(--muted); font-size: 13px; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 20px; }
.tool-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: var(--paper); }
.tool-art { position: relative; display: grid; place-items: center; height: 168px; background: var(--soft); }
.tool-art svg { width: 132px; height: 132px; }
.card-body { display: flex; flex-direction: column; flex: 1; padding: 24px; }
.card-category { margin: 0 0 8px; color: var(--primary-strong); font-size: 12px; font-weight: 750; }
h3 { margin: 0; font-size: 23px; line-height: 1.4; }
.card-copy { margin: 12px 0 24px; color: var(--muted); font-size: 15px; }
.card-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 48px; margin-top: auto; padding: 10px 16px; border-radius: 12px; background: var(--primary); color: #fff; font-size: 15px; font-weight: 750; text-decoration: none; transition: background .18s ease; }
.card-link:hover { background: var(--primary-strong); }
.card-link svg { width: 20px; height: 20px; flex-shrink: 0; }
.footer { padding: 24px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
@media (max-width: 620px) {
  .wrap { width: calc(100% - 32px); }
  .topbar { min-height: 72px; }
  .intro { padding: 40px 0 32px; }
  .intro-copy { font-size: 16px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 4px; }
  .tool-art { height: 152px; }
  .card-body { padding: 20px; }
  .tools { padding-bottom: 48px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }