/* onthetone 홈페이지 (앱과 같은 보라 그라데이션). 밝은/어두운 화면 모두 같은 색을 쓴다. */
@font-face { font-family: "Saira"; src: url("fonts/saira-latin.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; }
@font-face { font-family: "Saira"; src: url("fonts/saira-italic-latin.woff2") format("woff2"); font-weight: 100 900; font-style: italic; font-display: swap; }

:root {
  --bg-top: #a689e4;
  --bg-mid: #6e59c2;
  --bg-bottom: #353a8c;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.76);
  --glass: rgba(255, 255, 255, 0.1);
  --line: rgba(255, 255, 255, 0.18);
  --pill: #7fdcf6;
  --pill-2: #5ec4f0;
  --pill-text: #13204a;
  --orb-1: #f07fbf;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; font-family: var(--font); color: var(--text); line-height: 1.6; word-break: keep-all;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 45%, var(--bg-bottom) 100%) fixed, var(--bg-mid);
}
a { color: inherit; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0; }
.wordmark { font-family: "Saira", var(--font); font-style: italic; font-size: 28px; line-height: 1; letter-spacing: -0.05em;
  white-space: nowrap; padding-right: 0.12em; text-decoration: none; color: #1c1645; }
.wordmark .thin { font-weight: 100; font-size: 0.85em; }
.wordmark .bold { font-weight: 700; background: linear-gradient(100deg, var(--orb-1), #8f46d6); -webkit-background-clip: text;
  background-clip: text; color: transparent; }
header nav { display: flex; gap: 18px; font-size: 14px; }
header nav a { color: var(--muted); text-decoration: none; }
header nav a:hover { color: var(--text); }

.hero { padding: 48px 0 36px; }
.hero h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.25; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p { font-size: 17px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.pill { display: inline-block; border: 0; border-radius: 999px; padding: 13px 28px; font: inherit; font-weight: 700; font-size: 16px;
  color: var(--pill-text); background: linear-gradient(90deg, var(--pill), var(--pill-2)); text-decoration: none;
  box-shadow: 0 10px 30px rgba(20, 30, 90, 0.3); }
.pill[aria-disabled="true"] { opacity: 0.6; pointer-events: none; }
.req { margin-top: 14px; font-size: 13px; color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 18px 0 48px; }
.card { background: var(--glass); border: 1px solid var(--line); border-radius: 18px; padding: 20px; backdrop-filter: blur(18px); }
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; font-size: 14px; color: var(--muted); }

section.block { margin: 0 0 44px; }
section.block h2 { font-size: 24px; margin: 0 0 6px; }
section.block > p { color: var(--muted); margin: 0 0 18px; }
ol.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; gap: 12px; }
ol.steps li { counter-increment: s; display: grid; grid-template-columns: 34px 1fr; gap: 12px; background: var(--glass);
  border: 1px solid var(--line); border-radius: 16px; padding: 16px; }
ol.steps li::before { content: counter(s); width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; font-size: 14px; color: var(--pill-text); background: var(--pill); }
ol.steps b { display: block; margin-bottom: 2px; }
ol.steps p { margin: 0; font-size: 14px; color: var(--muted); }
.ui { display: inline-block; padding: 0 7px; border-radius: 6px; background: rgba(255, 255, 255, 0.16); color: var(--text); font-weight: 600; }
.note { margin-top: 14px; padding: 14px 16px; border-radius: 14px; border: 1px dashed var(--line); font-size: 14px; color: var(--muted); }

.doc { background: var(--glass); border: 1px solid var(--line); border-radius: 20px; padding: 28px clamp(18px, 4vw, 36px); margin: 12px 0 48px; }
.doc h1 { font-size: 28px; margin: 0 0 4px; }
.doc h2 { font-size: 18px; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--muted); font-size: 15px; }
.doc .date { font-size: 13px; color: var(--muted); }

footer { border-top: 1px solid var(--line); padding: 22px 0 40px; font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap;
  gap: 8px 18px; justify-content: space-between; }
footer a { color: var(--muted); }

@media (max-width: 560px) {
  header { flex-wrap: wrap; }
  .hero { padding-top: 24px; }
}