/* ------------------------------------------------------------------ tokens */
:root {
  --bg: #fbfaf8;
  --bg-sunk: #f3f1ed;
  --surface: #ffffff;
  --surface-2: #f7f6f3;
  --line: #e4e0d9;
  --line-strong: #d2ccc1;
  --ink: #1b1a17;
  --ink-2: #55524b;
  --ink-3: #8a857b;
  --accent: #1f5c4d;
  --accent-soft: #e6f0ec;
  --warn: #9a5b12;
  --shadow: 0 1px 2px rgba(27, 26, 23, .05), 0 8px 24px -12px rgba(27, 26, 23, .16);
  --shadow-lift: 0 2px 4px rgba(27, 26, 23, .06), 0 18px 40px -18px rgba(27, 26, 23, .28);
  --r: 12px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --maxw: 1240px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14151a; --bg-sunk: #101115; --surface: #1b1d23; --surface-2: #212429;
    --line: #2c2f37; --line-strong: #3b3f49; --ink: #eceae6; --ink-2: #a9a69f;
    --ink-3: #7b7872; --accent: #7fd1b9; --accent-soft: #1c2c29; --warn: #e0a860;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px -12px rgba(0,0,0,.6);
    --shadow-lift: 0 2px 4px rgba(0,0,0,.45), 0 18px 40px -18px rgba(0,0,0,.8);
  }
  :root:not([data-theme="light"]) .stage-card,
  :root:not([data-theme="light"]) .tool,
  :root:not([data-theme="light"]) .minitool { --c: hsl(var(--h) 52% 66%); }
}
[data-theme="dark"] .stage-card,
[data-theme="dark"] .tool,
[data-theme="dark"] .minitool { --c: hsl(var(--h) 52% 66%); }
[data-theme="dark"] {
  --bg: #14151a; --bg-sunk: #101115; --surface: #1b1d23; --surface-2: #212429;
  --line: #2c2f37; --line-strong: #3b3f49; --ink: #eceae6; --ink-2: #a9a69f;
  --ink-3: #7b7872; --accent: #7fd1b9; --accent-soft: #1c2c29; --warn: #e0a860;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-lift: 0 2px 4px rgba(0,0,0,.45), 0 18px 40px -18px rgba(0,0,0,.8);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; color: inherit; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.ico { width: 24px; height: 24px; flex: none; }

/* ------------------------------------------------------------------ header */
header.top {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; }
.brand > span:last-child { font: 600 16.5px/1 var(--sans); letter-spacing: -.012em; }
.brand .mark {
  width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center;
  background: var(--accent); color: var(--bg); flex: none;
}
.brand .mark svg { width: 18px; height: 18px; }

nav.main { display: flex; gap: 2px; margin-left: auto; }
nav.main a {
  padding: 7px 13px; border-radius: 8px; text-decoration: none; color: var(--ink-2);
  font-size: 13.5px; font-weight: 500; transition: background .15s, color .15s;
}
nav.main a:hover { background: var(--surface-2); color: var(--ink); }
nav.main a.on { background: var(--accent-soft); color: var(--accent); }
.iconbtn {
  width: 34px; height: 34px; display: grid; place-items: center; cursor: pointer;
  border: 1px solid var(--line); border-radius: 9px; background: var(--surface);
}
.iconbtn:hover { border-color: var(--line-strong); }
.iconbtn svg { width: 16px; height: 16px; }

/* -------------------------------------------------------------------- hero */
.hero { padding: 56px 0 30px; }
.hero h1 {
  font: 400 clamp(30px, 4.6vw, 46px)/1.1 var(--serif);
  letter-spacing: -.018em; margin: 0 0 14px; max-width: 20ch;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero p.lede { margin: 0; font-size: 16.5px; color: var(--ink-2); max-width: 62ch; }
.stat-row { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 26px; }
.stat b { display: block; font: 500 22px/1.2 var(--serif); }
.stat span { font-size: 12px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .07em; }

/* ------------------------------------------------------------------ search */
.searchbar { position: relative; margin: 26px 0 8px; }
.searchbar svg { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--ink-3); }
.searchbar input {
  width: 100%; padding: 14px 16px 14px 44px; font: inherit; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow); outline: none; transition: border-color .15s, box-shadow .15s;
}
.searchbar input:focus { border-color: var(--accent); box-shadow: var(--shadow), 0 0 0 3.5px var(--accent-soft); }
.searchbar kbd {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  font: 11px var(--mono); color: var(--ink-3); border: 1px solid var(--line);
  border-radius: 5px; padding: 2px 6px; background: var(--surface-2);
}

/* ------------------------------------------------------------- stage cards */
.section-head { display: flex; align-items: baseline; gap: 12px; margin: 44px 0 16px; }
.section-head h2 { font: 500 19px/1.2 var(--sans); letter-spacing: -.01em; margin: 0; }
.section-head span { font-size: 13px; color: var(--ink-3); }
.stage-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(228px, 1fr)); gap: 12px; }
.stage-card {
  --c: hsl(var(--h) 46% 38%);
  display: block; text-decoration: none; padding: 16px; border-radius: var(--r);
  background: var(--surface); border: 1px solid var(--line);
  transition: transform .16s cubic-bezier(.2,.7,.3,1), box-shadow .16s, border-color .16s;
}
.stage-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-color: var(--line-strong); }
.stage-card .top-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.stage-card .badge {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  color: var(--c); background: color-mix(in srgb, var(--c) 13%, transparent);
}
.stage-card .n { font: 500 13px var(--mono); color: var(--ink-3); }
.stage-card h3 { margin: 0 0 4px; font-size: 14.5px; font-weight: 600; letter-spacing: -.005em; }
.stage-card p { margin: 0; font-size: 12.5px; line-height: 1.45; color: var(--ink-3); }

/* -------------------------------------------------------------- tool cards */
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 18px 0; }
.chip {
  padding: 6px 12px; border-radius: 99px; border: 1px solid var(--line);
  background: var(--surface); font-size: 12.5px; color: var(--ink-2); cursor: pointer;
  white-space: nowrap; transition: all .14s;
}
.chip:hover { border-color: var(--line-strong); color: var(--ink); }
.chip.on { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.chip .cnt { opacity: .55; margin-left: 5px; font-variant-numeric: tabular-nums; }
.spacer { flex: 1 1 auto; }
.count-note { font-size: 12.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(268px, 1fr)); gap: 12px; }
.tool {
  --c: hsl(var(--h) 46% 38%);
  position: relative; text-align: left; width: 100%; cursor: pointer;
  padding: 14px; border-radius: var(--r); background: var(--surface);
  border: 1px solid var(--line); overflow: hidden;
  transition: transform .16s cubic-bezier(.2,.7,.3,1), box-shadow .16s, border-color .16s;
}
.tool:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-color: var(--c); }
.tool:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.tool .head { display: flex; gap: 11px; align-items: flex-start; }
.tool .tile {
  width: 38px; height: 38px; border-radius: 10px; flex: none; display: grid; place-items: center;
  color: var(--c); background: color-mix(in srgb, var(--c) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 22%, transparent);
}
.tool .tile svg { width: 20px; height: 20px; }
.tool .nm { font-size: 14px; font-weight: 600; letter-spacing: -.005em; line-height: 1.3; word-break: break-word; }
.tool .sub { font: 11px var(--mono); color: var(--ink-3); margin-top: 3px; }
.tool .desc {
  margin: 10px 0 0; font-size: 12.5px; line-height: 1.5; color: var(--ink-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  transition: -webkit-line-clamp .2s;
}
.tool:hover .desc, .tool:focus-visible .desc { -webkit-line-clamp: 6; }
.tool .foot { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 11px; }
.pill {
  font-size: 10.5px; letter-spacing: .02em; padding: 2.5px 7px; border-radius: 5px;
  background: var(--surface-2); color: var(--ink-3); border: 1px solid var(--line);
  white-space: nowrap;
}
.pill.acc { color: var(--c); background: color-mix(in srgb, var(--c) 11%, transparent); border-color: color-mix(in srgb, var(--c) 20%, transparent); }
.pill.star { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); }

/* ------------------------------------------------------------------ drawer */
.scrim { position: fixed; inset: 0; background: rgba(20,19,17,.34); backdrop-filter: blur(2px); z-index: 90; opacity: 0; transition: opacity .18s; }
.scrim.show { opacity: 1; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(480px, 100%); z-index: 91;
  background: var(--surface); border-left: 1px solid var(--line); box-shadow: var(--shadow-lift);
  transform: translateX(100%); transition: transform .24s cubic-bezier(.2,.75,.25,1);
  display: flex; flex-direction: column;
}
.drawer.show { transform: none; }
.drawer .dhead { padding: 20px 22px 16px; border-bottom: 1px solid var(--line); }
.drawer .dbody { padding: 20px 22px 40px; overflow-y: auto; }
.drawer h2 { margin: 0; font: 500 20px/1.25 var(--serif); letter-spacing: -.01em; }
.drawer .close { position: absolute; top: 16px; right: 18px; }
.kv { display: grid; grid-template-columns: 104px 1fr; gap: 8px 14px; font-size: 13px; margin: 4px 0 18px; }
.kv dt { color: var(--ink-3); font-size: 12px; padding-top: 1px; }
.kv dd { margin: 0; }
.linkrow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.btn {
  display: inline-flex; align-items: center; gap: 7px; padding: 8px 13px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--surface-2); text-decoration: none;
  font-size: 13px; font-weight: 500; cursor: pointer; transition: all .14s;
}
.btn:hover { border-color: var(--line-strong); background: var(--surface); }
.btn.primary { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn svg { width: 15px; height: 15px; }

/* ------------------------------------------------------------ code blocks */
.code { margin: 16px 0 0; background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.code .chead {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 7px 8px 7px 12px; border-bottom: 1px solid var(--line);
  font: 500 10.5px var(--sans); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3);
}
.code pre { margin: 0; padding: 12px; overflow-x: auto; font: 12px/1.65 var(--mono); color: var(--ink); }
.code .copy {
  border: 1px solid var(--line); background: var(--surface); border-radius: 6px;
  padding: 3px 9px; font: 500 11px var(--sans); cursor: pointer; color: var(--ink-2);
  letter-spacing: 0; text-transform: none; white-space: nowrap;
}
.code .copy:hover { color: var(--ink); border-color: var(--line-strong); }
.code .cmt { color: var(--ink-3); }

/* ---------------------------------------------------------------- workflow */
.wf-input { display: flex; gap: 10px; margin: 22px 0 10px; }
.wf-input input {
  flex: 1; padding: 14px 16px; font: inherit; background: var(--surface); color: var(--ink);
  border: 1px solid var(--line); border-radius: var(--r); outline: none; box-shadow: var(--shadow);
}
.wf-input input:focus { border-color: var(--accent); box-shadow: var(--shadow), 0 0 0 3.5px var(--accent-soft); }
.examples { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 30px; }
.examples button {
  border: 1px dashed var(--line-strong); background: none; color: var(--ink-3);
  border-radius: 99px; padding: 5px 11px; font-size: 12px; cursor: pointer;
}
.examples button:hover { color: var(--ink); border-color: var(--ink-3); border-style: solid; }

.nomatch {
  margin: 0 0 24px; padding: 14px 16px; border-radius: var(--r);
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
  background: color-mix(in srgb, var(--warn) 8%, transparent);
  font-size: 13.5px; line-height: 1.6; color: var(--ink-2);
}
.nomatch b { color: var(--warn); }

.offer {
  display: flex; gap: 16px; align-items: center; justify-content: space-between;
  flex-wrap: wrap; margin: 0 0 26px; padding: 14px 16px; border-radius: var(--r);
  border: 1px dashed var(--line-strong); background: var(--surface);
  font-size: 13.5px; line-height: 1.6; color: var(--ink-2);
}
.offer b { color: var(--ink); }
.offer > div { flex: 1 1 320px; }

.tailor {
  margin: 0 0 26px; padding: 16px 18px; border-radius: var(--r);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  background: var(--accent-soft);
}
.tailor .lab {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
  font: 500 10.5px var(--sans); letter-spacing: .07em; text-transform: uppercase;
  color: var(--accent);
}
.tailor p { margin: 0 0 10px; font-size: 14px; line-height: 1.65; color: var(--ink); }
.tailor p:last-of-type { margin-bottom: 0; }
.tailor .src {
  margin-top: 12px; padding-top: 10px; font-size: 11.5px; color: var(--ink-3);
  border-top: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.tailor a.tool { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.caret { display: inline-block; width: 7px; height: 15px; vertical-align: -3px;
  background: var(--accent); opacity: .7; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .caret { animation: none; } }

.frame {
  display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  margin: 0 0 28px;
}
.frame > div {
  padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); font-size: 13px; line-height: 1.55; color: var(--ink-2);
}
.frame .lab {
  display: block; font: 500 10.5px var(--sans); letter-spacing: .07em;
  text-transform: uppercase; margin-bottom: 5px;
}
.frame .dec { border-color: color-mix(in srgb, var(--accent) 26%, transparent); background: var(--accent-soft); }
.frame .dec .lab { color: var(--accent); }
.frame .kill { border-color: color-mix(in srgb, var(--warn) 26%, transparent); background: color-mix(in srgb, var(--warn) 8%, transparent); }
.frame .kill .lab { color: var(--warn); }
.step .pit {
  font-size: 12.5px; line-height: 1.55; color: var(--ink-2); margin: 0 0 12px;
  padding-left: 12px; border-left: 2px solid color-mix(in srgb, var(--warn) 45%, transparent);
}
.step .pit b { color: var(--warn); font-weight: 600; }

.plan { display: grid; gap: 0; margin-top: 8px; }
.step { display: grid; grid-template-columns: 34px 1fr; gap: 18px; }
.step .rail { display: flex; flex-direction: column; align-items: center; }
.step .dot {
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; flex: none;
  background: var(--surface); border: 1px solid var(--line-strong);
  font: 500 12px var(--mono); color: var(--ink-2);
}
.step .line { width: 1px; flex: 1; background: var(--line); margin: 5px 0; }
.step:last-child .line { display: none; }
.step .body { padding-bottom: 30px; min-width: 0; }
.step h3 { margin: 4px 0 6px; font-size: 15.5px; font-weight: 600; letter-spacing: -.008em; }
.step .why { margin: 0 0 12px; font-size: 13.5px; color: var(--ink-2); line-height: 1.6; }
.step .gate {
  font-size: 12.5px; padding: 9px 12px; border-radius: 9px; margin: 0 0 12px;
  background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}
.step .gate b { font-weight: 600; }
.minitools { display: flex; flex-wrap: wrap; gap: 7px; }
.minitool {
  --c: hsl(var(--h) 46% 38%);
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px 5px 6px;
  border-radius: 8px; border: 1px solid var(--line); background: var(--surface);
  font-size: 12.5px; cursor: pointer; transition: all .14s;
}
.minitool:hover { border-color: var(--c); transform: translateY(-1px); }
.minitool svg { width: 15px; height: 15px; color: var(--c); }

/* structure table */
.struct-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 6px; }
.struct-table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--ink-3); font-weight: 500; padding: 6px 10px; border-bottom: 1px solid var(--line);
}
.struct-table td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.struct-table tr.best td { background: var(--accent-soft); }
.struct-table td.id { font: 600 13px var(--mono); }
.struct-table td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.score { display: inline-block; min-width: 34px; font: 600 12px var(--mono); }
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.note {
  font-size: 12.5px; color: var(--warn); background: color-mix(in srgb, var(--warn) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 24%, transparent); border-radius: 9px;
  padding: 9px 12px; margin: 12px 0 0;
}
.spin { display: inline-block; width: 13px; height: 13px; border: 2px solid var(--line-strong); border-top-color: var(--accent); border-radius: 50%; animation: sp .7s linear infinite; vertical-align: -2px; }
@keyframes sp { to { transform: rotate(360deg); } }

.empty { text-align: center; padding: 70px 20px; color: var(--ink-3); }
footer { border-top: 1px solid var(--line); margin-top: 70px; padding: 28px 0 46px; font-size: 12.5px; color: var(--ink-3); }
footer a { color: var(--ink-2); }
.sentinel { height: 1px; }
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  nav.main a { padding: 7px 9px; font-size: 13px; }
  .hero { padding: 34px 0 20px; }
}