:root {
  color-scheme: dark;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  font-synthesis: none;
  color: #f7f8f8;
  background: #08090a;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: 32px 48px 24px;
  background: radial-gradient(ellipse at 50% 30%, #5e6ad20b, transparent 58%);
}
a { color: inherit; text-decoration: none; touch-action: manipulation; }
svg { flex-shrink: 0; }
:focus-visible { outline: 3px solid #abb4ff; outline-offset: 5px; }
.skip { position: absolute; top: -80px; padding: 12px; background: #222429; border-radius: 6px; }
.skip:focus { top: 12px; z-index: 1; }
.masthead, footer { width: 100%; max-width: 1280px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; gap: 11px; align-items: center; font-size: 16px; font-weight: 600; letter-spacing: -.3px; border-radius: 5px; }
.brand-mark { font-size: 26px; line-height: 1; color: #a8aff0; }
.brand-caption { display: block; margin-top: 2px; color: #7f848e; font-size: 11px; font-weight: 400; letter-spacing: 0; }
.access-label { display: inline-flex; align-items: center; gap: 7px; color: #989da7; font-size: 12px; }
.access-label svg { width: 14px; height: 14px; }
main { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 56px 0 48px; }
.login-card {
  width: 100%;
  max-width: 438px;
  padding: 38px;
  background: linear-gradient(150deg, #151619, #101113);
  border: 1px solid #ffffff12;
  border-radius: 20px;
  box-shadow: 0 24px 80px #0004, inset 0 1px #ffffff04;
}
.workspace-mark { display: grid; place-items: center; width: 50px; height: 50px; margin-bottom: 32px; border-radius: 13px; border: 1px solid #929bff26; background: #5e6ad215; color: #a8aff0; }
.workspace-mark svg { width: 30px; height: 30px; }
.eyebrow { margin: 0 0 12px; color: #9ca3b2; font-size: 12px; font-weight: 500; }
h1 { margin: 0; font-size: 28px; line-height: 1.45; font-weight: 600; letter-spacing: -1px; word-break: keep-all; }
.description { margin: 16px 0 32px; color: #969ca7; font-size: 14px; line-height: 1.8; letter-spacing: -.2px; }
.github-button { display: flex; align-items: center; gap: 12px; width: 100%; min-height: 52px; padding: 14px 17px; border: 1px solid #ffffff; border-radius: 10px; background: #f2f3f5; color: #17181b; font-size: 14px; font-weight: 600; transition: background .15s, border-color .15s; }
.github-button:hover { background: #dadfff; border-color: #dadfff; }
.github-mark { width: 21px; height: 21px; }
.arrow { width: 18px; height: 18px; margin-left: auto; color: #5b606b; }
.access-note { margin: 20px 0 0; color: #858b96; font-size: 11px; line-height: 1.8; text-align: center; word-break: keep-all; }
.workspace-caption { margin: 24px 0 0; color: #686e79; font-size: 12px; }
footer { color: #686e79; font-size: 11px; letter-spacing: .1px; }
@media (max-width: 520px) {
  body { padding: 24px 20px 20px; }
  main { padding: 44px 0 36px; }
  .login-card { padding: 30px 25px; border-radius: 17px; }
  h1 { font-size: 25px; }
  .workspace-mark { margin-bottom: 26px; }
}
@media (prefers-reduced-motion: reduce) { .github-button { transition: none; } }