:root {
  color-scheme: light;
  --ink: #172025;
  --muted: #59636b;
  --paper: #ffffff;
  --surface: #f5f6f8;
  --line: #d9dde2;
  --yellow: #ffcf28;
  font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--surface);
  font-synthesis: none;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; }
a:focus-visible { outline: 3px solid #2662ba; outline-offset: 6px; }
.shell { max-width: 1120px; margin: 0 auto; padding: 0 40px; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: 15px; font-weight: 650; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--yellow); }
.brand-mark svg { width: 24px; height: 24px; }
.project-label { margin: 0; color: var(--muted); font-size: 13px; }
main { padding: 82px 0 64px; }
.intro { max-width: 740px; margin-bottom: 44px; }
h1 { margin: 0 0 24px; font-size: clamp(40px, 5.8vw, 68px); font-weight: 750; line-height: 1.2; letter-spacing: -.045em; }
.intro p { margin: 0; max-width: 630px; color: var(--muted); font-size: 17px; line-height: 1.85; }
.destinations { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.destination { display: flex; flex-direction: column; min-height: 300px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: var(--paper); text-decoration: none; }
.destination-app { background: var(--yellow); border-color: var(--yellow); }
.destination-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.destination-icon { width: 32px; height: 32px; }
.destination h2 { margin: 26px 0 10px; font-size: 26px; font-weight: 700; letter-spacing: -.025em; }
.destination p { margin: 0 0 24px; font-size: 15px; line-height: 1.8; color: var(--muted); }
.destination-app p { color: #45402b; }
.status { display: inline-block; padding: 6px 10px; border-radius: 7px; background: var(--surface); color: var(--muted); font-size: 12px; line-height: 1.3; }
.destination-app .status { color: #45402b; background: #ffe68c; }
.destination-url { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; overflow-wrap: anywhere; }
.destination-app .destination-url { border-color: #ceaa2b; }
.link-arrow { flex-shrink: 0; width: 20px; height: 20px; }
.destination:hover h2 { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 2px; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 32px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.site-footer p { margin: 0; }
.back-link { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 36px; text-decoration: none; font-size: 14px; color: var(--muted); }
.back-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.back-link svg { width: 18px; height: 18px; }
.placeholder { max-width: 800px; padding: 42px; border: 1px solid var(--line); border-radius: 20px; background: var(--paper); }
.placeholder .status { margin-bottom: 26px; background: var(--yellow); color: var(--ink); }
.placeholder h1 { font-size: clamp(34px, 4.6vw, 52px); }
.placeholder p { margin: 0; max-width: 600px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.placeholder .page-url { margin-top: 28px; font-size: 14px; overflow-wrap: anywhere; }
.page-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 18px; border: 1px solid var(--line); border-radius: 9px; text-decoration: none; font-size: 14px; font-weight: 600; }
.button-primary { border-color: var(--yellow); background: var(--yellow); }
.button:hover { text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 680px) {
  .shell { padding: 0 22px; }
  .site-header { padding-top: 22px; align-items: flex-start; }
  .brand { max-width: 160px; font-size: 13px; gap: 9px; }
  .brand-mark { flex-shrink: 0; width: 34px; height: 34px; border-radius: 10px; }
  .project-label { max-width: 115px; text-align: right; font-size: 12px; line-height: 1.6; }
  main { padding: 58px 0 40px; }
  .intro { margin-bottom: 32px; }
  .intro p { font-size: 15px; }
  .destinations { grid-template-columns: 1fr; gap: 16px; }
  .destination { min-height: 270px; padding: 25px; }
  .destination h2 { font-size: 24px; }
  .site-footer { flex-direction: column; gap: 5px; }
  .placeholder { padding: 28px 24px; }
  .placeholder p { font-size: 15px; }
}