/* turbrix.com - one style sheet, no external font, image or script (#460).
   Colours follow the product (apps/desktop/src/theme/tokens.css): Blue #0066FF, Cyan #00E5FF,
   Deep Navy #0B1F3B. Light and dark follow the system. */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --surface: #ffffff;
  --text: #1e2a35;
  --text-strong: #0b1f3b;
  --muted: #46566a;
  --border: #d4dce7;
  --border-strong: #b6c3d2;
  --accent: #0066ff;
  --accent-hover: #0052cc;
  --accent-fg: #ffffff;
  --accent-text: #0052cc;
  --accent-soft: #e0edff;
  --focus: #0066ff;
  --ok: #18794a;
  --ok-bg: #e2f4e9;
  --warn: #965d0d;
  --warn-bg: #fff1d6;
  --danger: #c62828;
  --node: #ffffff;
  --node-head: #d9e5f4;
  --shadow: 0 1px 2px rgba(11, 31, 59, 0.06), 0 8px 24px rgba(11, 31, 59, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #181818;
    --bg-alt: #1f1f1f;
    --surface: #1f1f1f;
    --text: #d6d6d6;
    --text-strong: #ffffff;
    --muted: #a9b3bf;
    --border: #2b2b2b;
    --border-strong: #4d4d4d;
    --accent: #0066ff;
    --accent-hover: #2b7fff;
    --accent-fg: #ffffff;
    --accent-text: #6fb1ff;
    --accent-soft: #10284d;
    --focus: #00e5ff;
    --ok: #6fcf97;
    --ok-bg: #12301f;
    --warn: #f0b860;
    --warn-bg: #3a2a0c;
    --danger: #ff8a80;
    --node: #262626;
    --node-head: #10284d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent-text); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; top: 0; padding: 8px 16px; background: var(--accent); color: var(--accent-fg); }
.skip:focus { left: 8px; top: 8px; z-index: 10; }

/* header */
.site-head { border-bottom: 1px solid var(--border); background: var(--bg); }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; }
.brand img { height: 30px; width: auto; display: block; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; margin: 0; padding: 0; list-style: none; flex: 1; }
.nav a, .lang a { color: var(--text); text-decoration: none; padding: 6px 2px; display: inline-block; }
.nav a:hover, .lang a:hover { color: var(--accent-text); }
.nav a[aria-current="page"] { color: var(--accent-text); font-weight: 600; box-shadow: inset 0 -2px 0 var(--accent); }
.lang { font-size: 14px; color: var(--muted); margin: 0; }

/* type */
h1, h2, h3 { color: var(--text-strong); line-height: 1.25; margin: 0 0 12px; }
h1 { font-size: clamp(30px, 5vw, 46px); letter-spacing: -0.02em; }
h2 { font-size: clamp(22px, 3vw, 28px); letter-spacing: -0.01em; }
h3 { font-size: 18px; }
p { margin: 0 0 14px; }
.lead { font-size: clamp(17px, 2.2vw, 20px); color: var(--muted); max-width: 44em; }
.small { font-size: 14px; color: var(--muted); }
code, .mono { font: 13px/1.5 ui-monospace, "Cascadia Mono", Consolas, monospace; }

/* sections */
main { display: block; }
section { padding: 56px 0; }
section.alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.hero { padding: 64px 0 48px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 40px; align-items: center; }
.hero figure { margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button {
  display: inline-block; padding: 11px 22px; border-radius: 8px; font-weight: 600; text-decoration: none;
  border: 1px solid var(--border-strong); background: var(--surface); color: var(--text-strong); cursor: pointer; font: inherit; font-weight: 600;
}
.button:hover { border-color: var(--accent); color: var(--accent-text); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-fg); }
.button.danger { color: var(--danger); }
.button[disabled] { opacity: 0.6; cursor: default; }

.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 28px; padding: 0; list-style: none; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 22px; }
.card p:last-child { margin-bottom: 0; }
.card .tag { display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent-text); background: var(--accent-soft); border-radius: 999px; padding: 2px 10px; margin-bottom: 10px; }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.steps li { counter-increment: step; border-top: 3px solid var(--accent); padding-top: 12px; }
.steps li::before { content: counter(step); display: block; font-weight: 700; color: var(--accent-text); }
.facts { margin: 20px 0 0; padding-left: 20px; }
.facts li { margin-bottom: 8px; }

/* tables */
.table-wrap { overflow-x: auto; margin-top: 20px; }
table { border-collapse: collapse; width: 100%; background: var(--surface); }
caption { text-align: left; color: var(--muted); font-size: 14px; padding-bottom: 8px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { border-bottom: 2px solid var(--border-strong); color: var(--text-strong); }
tbody th { font-weight: 600; color: var(--text-strong); }
.price { font-size: 22px; font-weight: 700; color: var(--text-strong); }
td.hash { max-width: 28ch; }

/* notices */
.notice { border: 1px solid var(--border-strong); border-left: 4px solid var(--accent); background: var(--bg-alt); border-radius: 8px; padding: 14px 18px; margin: 20px 0; }
.notice.draft { border-left-color: var(--warn); background: var(--warn-bg); color: var(--text-strong); }
.notice.ok { border-left-color: var(--ok); background: var(--ok-bg); }
.notice p:last-child { margin-bottom: 0; }
.status { font-weight: 600; }
.status.active { color: var(--ok); }
.status.lapsed, .status.none { color: var(--warn); }
[hidden] { display: none !important; }

.doc { max-width: 46em; }
.doc h2 { margin-top: 36px; font-size: 20px; }
.doc ul { padding-left: 22px; }
.doc li { margin-bottom: 6px; }

.pc-list { list-style: none; padding: 0; margin: 12px 0 0; }
.pc-list li { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }

/* the hero drawing: a small workflow */
.flow .box { fill: var(--node); stroke: var(--border-strong); }
.flow .head { fill: var(--node-head); }
.flow .label { fill: var(--text-strong); font: 600 13px system-ui, "Segoe UI", "Malgun Gothic", sans-serif; }
.flow .sub { fill: var(--muted); font: 12px system-ui, "Segoe UI", "Malgun Gothic", sans-serif; }
.flow .line { stroke: var(--accent); stroke-width: 2; fill: none; }
.flow .dot { fill: var(--accent); }
.flow .frame { fill: var(--bg-alt); stroke: var(--border); }

/* footer */
.site-foot { border-top: 1px solid var(--border); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-foot ul { display: flex; flex-wrap: wrap; gap: 4px 20px; list-style: none; margin: 0; padding: 0; }
.site-foot a { color: var(--muted); }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  section { padding: 40px 0; }
}
@media (prefers-reduced-motion: no-preference) {
  .button { transition: background-color 0.12s, border-color 0.12s, color 0.12s; }
}
@media print {
  .site-head, .site-foot, .actions { display: none; }
}