:root {
  --paper: #f3f5ee;
  --ink: #1c2620;
  --ink-soft: #55625a;
  --rule: #d9dfcf;
  --track: #e4e9dc;
  --muscat: #b9d046;
  --muscat-deep: #6f8a12;
  --grape: #4b2a6b;
  --grape-soft: #ece4f3;
  --error: #a3261b;
  --display: "Bricolage Grotesque", "Pretendard Variable", Pretendard, system-ui, sans-serif;
  --body: "Pretendard Variable", Pretendard, system-ui, -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.6;
  word-break: keep-all;
}
a { color: var(--grape); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--grape); outline-offset: 3px; border-radius: 4px; }

/* Header */
.top {
  max-width: 68rem; margin: 0 auto; padding: 1.25rem 1.25rem 0;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: .55rem; color: var(--ink); text-decoration: none; }
.mark { width: 2rem; height: 2rem; color: var(--muscat-deep); }
.mark-dot { fill: var(--grape); }
.wordmark { font-family: var(--display); font-weight: 800; font-size: 1.35rem; letter-spacing: -.02em; }
.lang { display: inline-flex; border: 1px solid var(--rule); border-radius: 999px; padding: 3px; background: #fff; }
.lang button {
  font: inherit; font-size: .875rem; border: 0; background: transparent; color: var(--ink-soft);
  padding: .3rem .8rem; border-radius: 999px; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

main { max-width: 68rem; margin: 0 auto; padding: 0 1.25rem; }

/* Hero */
.hero { padding: 4.5rem 0 2.5rem; max-width: 46rem; }
.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6.4vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -.035em;
  margin: 0 0 1.25rem;
}
html[lang="ko"] .hero h1 { letter-spacing: -.045em; line-height: 1.15; }
.lede { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--ink-soft); margin: 0; max-width: 38rem; }

/* Season strip: the signature element */
.season {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 1.25rem;
  padding: 1.5rem 1.5rem 1.25rem;
}
.season-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.season h2 { font-family: var(--display); font-size: 1.3rem; font-weight: 700; margin: 0; letter-spacing: -.01em; }
.today { margin: 0; font-size: .9rem; color: var(--grape); font-weight: 600; }

.strip {
  display: grid;
  grid-template-columns: minmax(7.5rem, 11rem) 1fr 5.5rem;
  column-gap: 1rem;
  position: relative;
}
.months, .row { display: contents; }
.months span { font-size: .75rem; color: var(--ink-soft); }
.month-scale { grid-column: 2; display: grid; grid-template-columns: repeat(12, 1fr); padding-bottom: .4rem; border-bottom: 1px solid var(--rule); }
.month-scale span { padding-left: 2px; }
.name { grid-column: 1; padding: .7rem 0; font-weight: 600; line-height: 1.3; align-self: center; }
.name small { display: block; font-weight: 400; color: var(--ink-soft); font-size: .8rem; }
.track { grid-column: 2; position: relative; height: 100%; min-height: 3rem; border-bottom: 1px solid var(--track); }
.track::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 4px; margin-top: -2px; border-radius: 4px; background: var(--track); }
.band { position: absolute; top: 50%; height: 10px; margin-top: -5px; border-radius: 6px; background: #c9cfbf; }
.row.in .band { background: var(--muscat); }
.peak { position: absolute; top: 50%; width: 3px; height: 22px; margin: -11px 0 0 -1.5px; border-radius: 2px; background: var(--ink); opacity: .35; }
.row.in .peak { opacity: 1; background: var(--muscat-deep); }
.phase { grid-column: 3; align-self: center; font-size: .85rem; color: var(--ink-soft); }
.row.in .phase { color: var(--ink); font-weight: 700; }
.row.in .name { color: var(--ink); }
.row:not(.in) .name { color: var(--ink-soft); }
.today-line { position: absolute; bottom: 0; width: 2px; margin-left: -1px; background: var(--grape); pointer-events: none; }
.note { margin: 1rem 0 0; font-size: .85rem; color: var(--ink-soft); max-width: 44rem; }

/* Questions */
.questions { padding: 4.5rem 0 1rem; }
.questions h2, .signup h2 { font-family: var(--display); font-weight: 700; font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.02em; margin: 0 0 1.75rem; max-width: 36rem; line-height: 1.2; }
.questions dl { margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.questions dl > div { border-top: 3px solid var(--ink); padding-top: 1rem; }
.questions dt { font-weight: 700; font-size: 1.15rem; margin-bottom: .4rem; }
.questions dd { margin: 0; color: var(--ink-soft); }

/* Sign-up */
.signup { padding: 4rem 0 4.5rem; max-width: 40rem; }
.signup h2 { margin-bottom: 1.25rem; }
#signup-form { display: flex; gap: .5rem; }
#signup-form input {
  flex: 1; min-width: 0; font: inherit; padding: .85rem 1rem; border: 1px solid #b9c2ad; border-radius: .75rem; background: #fff; color: var(--ink);
}
#signup-form input[aria-invalid="true"] { border-color: var(--error); }
#signup-form button {
  font: inherit; font-weight: 700; padding: .85rem 1.4rem; border: 0; border-radius: .75rem;
  background: var(--grape); color: #fff; cursor: pointer; white-space: nowrap;
}
#signup-form button:hover { background: #3a1f55; }
#signup-form button:disabled { opacity: .6; cursor: progress; }
.form-msg { min-height: 1.6em; margin: .6rem 0 0; font-weight: 600; }
.form-msg.ok { color: var(--muscat-deep); }
.form-msg.err { color: var(--error); }
.fine { margin: .2rem 0 0; font-size: .85rem; color: var(--ink-soft); }

/* Footer */
.foot { border-top: 1px solid var(--rule); max-width: 68rem; margin: 0 auto; padding: 1.5rem 1.25rem 2.5rem; display: flex; flex-wrap: wrap; gap: .4rem 2rem; font-size: .85rem; color: var(--ink-soft); }
.foot p { margin: 0; }

@media (max-width: 760px) {
  .hero { padding-top: 3rem; }
  .season { padding: 1.1rem 1rem 1rem; border-radius: 1rem; }
  .strip { grid-template-columns: 6.2rem 1fr 4.2rem; column-gap: .6rem; }
  .month-scale span:nth-child(even) { visibility: hidden; }
  .name { font-size: .9rem; }
  .name small { font-size: .72rem; }
  .phase { font-size: .78rem; }
  .questions dl { grid-template-columns: 1fr; gap: 1.5rem; }
  #signup-form { flex-direction: column; }
}

@media (prefers-reduced-motion: no-preference) {
  .row.in .band { animation: grow .7s cubic-bezier(.2,.7,.2,1) both; transform-origin: left center; }
  @keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
}