:root {
  color-scheme: light;
  --ground: #F4F4F0;
  --surface: #FFFFFF;
  --sunk: #F7F7F4;
  --ink: #1C211F;
  --ink-2: #3B433F;
  --ink-3: #4A524E;
  --ink-4: #5A625E;
  --ink-5: #6A726E;
  --line: #DCDDD6;
  --line-2: #C9CBC3;
  --line-3: #E4E5DF;
  --accent: #1F4D40;
  --accent-ink: #123329;
  --accent-soft: #F6FAF8;
  --accent-tint: #E8F0EC;
  --warn: #8A3B12;
  --note-bg: #FFF1D6;
  --note-ink: #6B4A00;
  --serif: 'Noto Serif KR', serif;
  --sans: 'IBM Plex Sans KR', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ground); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.65; word-break: keep-all; overflow-wrap: break-word; }
a { color: var(--accent); }
a:hover { color: var(--accent-ink); }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
img { max-width: 100%; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .wrap { padding: 0 24px; } }

.band { border-top: 1px solid var(--line); }
.band > .wrap { padding-top: 80px; padding-bottom: 80px; }
.band.alt { background: var(--surface); }
.band.dark { background: var(--accent); color: #FFFFFF; border-top: 0; }

h2 { font-family: var(--serif); font-size: clamp(26px, 3vw, 32px); font-weight: 700; line-height: 1.35; }
.lead { margin-top: 12px; color: var(--ink-2); max-width: 40em; }
.eyebrow { font-size: 14px; font-weight: 600; color: var(--accent); letter-spacing: 0.04em; }
.fine { font-size: 13px; color: var(--ink-4); }
.mono { font-family: var(--mono); }

.btn { display: inline-flex; align-items: center; min-height: 48px; padding: 0 24px; border-radius: 8px; text-decoration: none; font: inherit; font-weight: 600; cursor: pointer; }
.btn.primary { background: var(--accent); color: #FFFFFF; border: 0; }
.btn.primary:hover { background: var(--accent-ink); color: #FFFFFF; }
.btn.ghost { border: 1px solid #B9BCB3; color: var(--ink); font-weight: 400; background: transparent; }
.btn.light { background: #FFFFFF; color: var(--accent); border: 0; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid #E8C77A; outline-offset: 2px; }

.badge { display: inline-block; font-size: 12px; font-weight: 600; color: var(--note-ink); background: var(--note-bg); border-radius: 99px; padding: 2px 10px; white-space: nowrap; }
.badge.line { color: var(--accent); background: transparent; border: 1px solid var(--accent); }
.tag { display: inline-block; font-size: 12px; font-weight: 600; color: var(--note-ink); background: var(--note-bg); border-radius: 4px; padding: 1px 6px; margin-right: 6px; vertical-align: 1px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--ink); text-decoration: none; }
.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0 20px; font-size: 15px; }
.site-nav a { color: var(--ink-3); text-decoration: none; padding: 10px 0; }
.site-nav a.btn { color: #FFFFFF; padding: 0 18px; min-height: 44px; font-weight: 500; }
@media (max-width: 720px) { .site-nav .opt { display: none; } }

/* hero */
.hero { display: flex; flex-wrap: wrap; gap: 48px 56px; align-items: center; padding-top: 72px; padding-bottom: 72px; }
.hero-copy { flex: 1 1 480px; }
.hero h1 { margin-top: 20px; font-family: var(--serif); font-weight: 700; font-size: clamp(34px, 5vw, 58px); line-height: 1.28; letter-spacing: -0.01em; }
.hero .sub { margin-top: 24px; font-size: 19px; color: var(--ink-2); max-width: 32em; }
.hero .motto { margin-top: 28px; font-family: var(--serif); font-size: clamp(21px, 2.4vw, 30px); font-weight: 600; color: var(--accent); }
.actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero figure { flex: 1 1 360px; min-width: 0; }

/* mock frames */
.mock { border: 1px solid var(--line-2); border-radius: 16px; background: var(--surface); overflow: hidden; }
.mock-head { display: flex; flex-wrap: wrap; gap: 6px 10px; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--line-3); font-size: 13px; }
.mock-body { padding: 8px 16px 16px; font-size: 14px; }
.mock.small { border-radius: 12px; background: var(--sunk); font-size: 13px; }
.mock.small .mock-head { background: var(--surface); padding: 10px 14px; }
.row { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid #EEEFEA; }
.row .t { font-family: var(--mono); color: var(--ink-5); width: 44px; flex: none; }
.row .d { color: var(--ink-3); }
.queue { margin-top: 14px; border: 1px solid var(--accent); border-radius: 10px; padding: 14px; background: var(--accent-soft); }
.queue-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; align-items: baseline; margin-bottom: 10px; }
.queue .btn { min-height: 44px; padding: 0 18px; font-size: 15px; }
figcaption { margin-top: 10px; font-size: 14px; }
.hero figcaption { font-size: 13px; color: var(--ink-4); }

/* day timeline + rule grids */
.ruled { margin-top: 40px; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); border-top: 2px solid var(--ink); }
.ruled > * { padding: 22px 20px 26px 0; border-bottom: 1px solid var(--line); }
.ruled .when { font-family: var(--mono); color: var(--accent); font-size: 15px; margin-bottom: 6px; }
.ruled h3 { font-size: 17px; margin-bottom: 6px; }
.ruled p { color: var(--ink-2); }
.ruled.wide { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* tasks */
.cards { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--line-2); border-radius: 14px; padding: 26px; }
.card h3 { font-size: 19px; margin-bottom: 8px; }
.card p { color: var(--ink-2); }
.subhead { margin-top: 56px; margin-bottom: 16px; font-size: 20px; }
.table-box { overflow-x: auto; border: 1px solid var(--line-2); border-radius: 12px; background: var(--surface); }
.table-box table { width: 100%; border-collapse: collapse; min-width: 560px; font-size: 15px; }
.table-box th { text-align: left; color: var(--ink-3); background: var(--sunk); padding: 12px 18px; font-weight: 600; }
.table-box td { padding: 14px 18px; border-top: 1px solid var(--line-3); color: var(--ink-2); }
.table-box td:first-child { font-weight: 600; color: var(--ink); width: 140px; }

.donts { margin-top: 48px; padding: 28px; border-radius: 14px; background: var(--ink); color: #F0F2EE; display: flex; flex-wrap: wrap; gap: 20px 48px; }
.donts h3 { flex: 1 1 220px; font-family: var(--serif); font-size: 24px; font-weight: 700; }
.donts ul { flex: 2 1 420px; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; color: #D7DCD9; }

/* company / employee */
.split { margin-top: 48px; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.split > div { border: 1px solid var(--line-2); border-radius: 14px; padding: 28px; }
.split > div.mine { border: 2px solid var(--accent); background: var(--accent-soft); }
.split h3 { font-size: 19px; margin-bottom: 14px; }
.split ul { padding-left: 20px; display: flex; flex-direction: column; gap: 8px; color: var(--ink-2); }
.motto-line { margin-top: 28px; font-family: var(--serif); font-size: 22px; font-weight: 600; color: var(--accent); }

/* screens */
.screens-head { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: baseline; justify-content: space-between; }
.screens { margin-top: 32px; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.mock.small table { width: 100%; border-collapse: collapse; min-width: 320px; }
.mock.small th { text-align: left; color: var(--ink-4); font-weight: 500; padding: 8px 6px; }
.mock.small td { padding: 8px 6px; border-top: 1px solid var(--line-3); }
.events { padding: 8px 14px 14px; }
.events div { display: flex; gap: 12px; padding: 8px 6px; border-top: 1px solid var(--line-3); }
.events div:first-child { border-top: 0; }
.events .t { color: var(--ink-5); width: 44px; flex: none; }
.events .k { width: 84px; flex: none; }
.events .k.warn { color: var(--warn); font-weight: 600; }
.overflow { overflow-x: auto; padding: 8px 14px 14px; }

/* promise */
.promise { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px 40px; }
.promise h3 { font-size: 18px; padding-bottom: 10px; margin-bottom: 12px; border-bottom: 2px solid var(--accent); }
.promise p + p { margin-top: 12px; }
.promise .cannot { background: var(--ground); border: 1px solid var(--line-2); border-radius: 12px; padding: 20px 22px; }
.promise .cannot h3 { border-bottom-color: var(--warn); }

/* foundation */
.found { display: flex; flex-wrap: wrap; gap: 40px; align-items: center; }
.found > div:first-child { flex: 1 1 420px; }
.found h2 { margin-top: 12px; margin-bottom: 16px; }
.found p + p { margin-top: 12px; }
.found p { color: var(--ink-2); }
.stack { flex: 1 1 340px; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.stack div { border: 1px solid var(--line-2); border-radius: 10px; padding: 14px 18px; background: var(--surface); }
.stack div.top { border: 2px solid var(--accent); background: var(--accent-soft); }
.stack div.base { border: 1px dashed #B9BCB3; background: transparent; color: var(--ink-3); }
.stack span { color: var(--ink-3); }

/* contact */
.contact { display: flex; flex-wrap: wrap; gap: 32px 56px; align-items: flex-start; }
.contact > div:first-child { flex: 1 1 360px; }
.contact h2 { margin-bottom: 14px; }
.contact p { font-size: 18px; color: #DCE8E2; }
.contact form { flex: 1 1 420px; display: flex; flex-direction: column; gap: 14px; }
.contact label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: #DCE8E2; }
.contact input, .contact textarea { font: inherit; color: var(--ink); background: #FFFFFF; border: 0; border-radius: 8px; padding: 12px 14px; min-height: 48px; }
.contact textarea { min-height: 112px; resize: vertical; }
.contact .status { min-height: 1.5em; font-size: 15px; color: #FFFFFF; }
.contact .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.site-footer .wrap { padding-top: 28px; padding-bottom: 28px; font-size: 13px; color: var(--ink-4); }