:root {
  --bg: #fbf8f2;
  --surface: #ffffff;
  --surface-2: #f4efe4;
  --ink: #1b1530;
  --muted: #5f5a6e;
  --rule: #e6dfd0;
  --accent: #5a3fd6;
  --accent-ink: #ffffff;
  --accent-soft: #ece7ff;
  --sun: #f2a024;
  --sun-soft: #fff1d6;
  --sun-ink: #8a4b00;
  --ok: #18794e;
  --warn: #b4432a;
  --term-bg: #15121f;
  --term-bar: #1f1a2e;
  --term-ink: #ebe7f5;
  --term-dim: #9a93ad;
  --term-green: #7ee2a8;
  --term-amber: #ffc94a;
  --term-red: #ff8f7a;
  --term-violet: #b9a8ff;
  --shadow: 0 1px 2px rgba(27, 21, 48, 0.06), 0 12px 32px -12px rgba(27, 21, 48, 0.18);
  --radius: 14px;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --display: "Space Grotesk", var(--sans);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #120f1f;
    --surface: #1a1629;
    --surface-2: #211c33;
    --ink: #efebf8;
    --muted: #a39cb8;
    --rule: #2e2843;
    --accent: #a593ff;
    --accent-ink: #120f1f;
    --accent-soft: #261f45;
    --sun: #ffc94a;
    --sun-soft: #2e2416;
    --sun-ink: #ffd37a;
    --ok: #7ee2a8;
    --warn: #ff8f7a;
    --term-bg: #0c0a14;
    --term-bar: #16121f;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 40px -16px rgba(0, 0, 0, 0.7);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; font: 400 1rem/1.65 var(--sans); color: var(--ink); background: var(--bg); overflow-x: hidden; }
h1, h2, h3, p, ul, ol, pre, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--accent-soft); }
code, pre, kbd { font-family: var(--mono); }
code { font-size: 0.86em; background: var(--surface-2); padding: 0.12em 0.38em; border-radius: 5px; }
.skip { position: absolute; left: -999px; top: 0; padding: 0.5rem 1rem; background: var(--ink); color: var(--bg); z-index: 20; }
.skip:focus { left: 1rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* header */
.site-header { max-width: 72rem; margin: 0 auto; padding: 1.1rem clamp(1rem, 4vw, 2rem); display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--ink); text-decoration: none; }
.brand .mark { width: 2.1rem; height: 2.1rem; }
.wordmark { font-family: var(--display); font-weight: 700; font-size: 1.35rem; letter-spacing: -0.03em; }
nav { display: flex; gap: clamp(0.9rem, 3vw, 1.6rem); flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
nav a:hover, nav a[aria-current] { color: var(--ink); }

main { display: block; }
section { max-width: 72rem; margin: 0 auto; padding: clamp(3rem, 7vw, 5.5rem) clamp(1rem, 4vw, 2rem) 0; }
.section-head { max-width: 44rem; margin-bottom: 2rem; }
.section-head h2, .faq h2, .cta h2 { font-family: var(--display); font-weight: 700; font-size: clamp(1.6rem, 3.6vw, 2.3rem); line-height: 1.15; letter-spacing: -0.025em; }
.section-head p { margin-top: 0.6rem; color: var(--muted); font-size: 1.06rem; }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; padding-top: clamp(2rem, 6vw, 4.5rem); }
.eyebrow { display: inline-block; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.02em; color: var(--sun-ink); background: var(--sun-soft); padding: 0.25rem 0.7rem; border-radius: 999px; }
.hero h1 { margin-top: 1rem; font-family: var(--display); font-weight: 700; font-size: clamp(2.5rem, 6.4vw, 4.3rem); line-height: 1.02; letter-spacing: -0.04em; }
.sun { background: linear-gradient(180deg, #ffb52e, #f0731e); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (prefers-color-scheme: dark) { .sun { background: linear-gradient(180deg, #ffd56a, #ff9a3c); -webkit-background-clip: text; background-clip: text; } }
.lede { margin-top: 1.2rem; font-size: clamp(1.05rem, 1.6vw, 1.18rem); color: var(--muted); max-width: 38rem; }
.install { margin-top: 1.8rem; max-width: 34rem; }
.cmd { display: flex; align-items: stretch; background: var(--term-bg); color: var(--term-ink); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); }
.cmd pre { flex: 1; min-width: 0; padding: 0.95rem 1.1rem; font-size: 0.95rem; overflow-x: auto; white-space: pre; }
.cmd .p, .term-body .p, .block .p { color: var(--term-amber); user-select: none; }
.copy { flex: none; border: 0; border-left: 1px solid #2c2640; background: var(--term-bar); color: var(--term-ink); font: 600 0.85rem var(--sans); padding: 0 1.1rem; cursor: pointer; }
.copy:hover { background: #2a2340; }
.copy[data-copied] { color: var(--term-green); }
.hint { margin-top: 0.7rem; font-size: 0.9rem; color: var(--muted); }

.hero-card { display: flex; flex-direction: column; gap: 0.7rem; padding: 1.4rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 20px; box-shadow: var(--shadow); }
.bubble { position: relative; max-width: 88%; padding: 0.65rem 0.9rem; border-radius: 14px; font-size: 0.95rem; line-height: 1.45; }
.bubble .who { display: block; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; opacity: 0.7; margin-bottom: 0.15rem; }
.bubble.user { align-self: flex-end; background: var(--accent); color: var(--accent-ink); border-bottom-right-radius: 4px; }
.bubble.limit { background: var(--surface-2); color: var(--warn); font-family: var(--mono); font-size: 0.86rem; border-bottom-left-radius: 4px; }
.bubble.hi { background: var(--sun-soft); color: var(--sun-ink); border-bottom-left-radius: 4px; }
.bubble.done { background: color-mix(in srgb, var(--ok) 14%, var(--surface)); color: var(--ink); border-bottom-left-radius: 4px; }
@media (prefers-reduced-motion: no-preference) {
  .hero-card .bubble { opacity: 0; transform: translateY(6px); animation: rise 0.5s ease forwards; }
  .hero-card .bubble:nth-child(1) { animation-delay: 0.15s; }
  .hero-card .bubble:nth-child(2) { animation-delay: 0.75s; }
  .hero-card .bubble:nth-child(3) { animation-delay: 1.35s; }
  .hero-card .bubble:nth-child(4) { animation-delay: 2.1s; }
}
@keyframes rise { to { opacity: 1; transform: none; } }

/* demo */
.stage { position: relative; background: var(--surface); border: 1px solid var(--rule); border-radius: 20px; padding: clamp(0.8rem, 2vw, 1.2rem); box-shadow: var(--shadow); }
.stage-bar { display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 0.9rem; }
.clock { display: inline-flex; align-items: center; gap: 0.55rem; font: 700 1.05rem var(--mono); padding: 0.35rem 0.8rem 0.35rem 0.4rem; border-radius: 999px; background: var(--surface-2); min-width: 7.2rem; }
.sky { width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--sky, linear-gradient(#ffd56a, #f0731e)); transition: background 0.6s; }
.chapters { display: flex; gap: 0.35rem; flex-wrap: wrap; flex: 1; }
.chapters button, .play { border: 1px solid var(--rule); background: transparent; color: var(--muted); font: 500 0.82rem var(--sans); padding: 0.32rem 0.7rem; border-radius: 999px; cursor: pointer; }
.chapters button:hover, .play:hover { color: var(--ink); border-color: var(--muted); }
.chapters button[aria-current="step"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.play { font-weight: 600; color: var(--ink); }
.panes { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0.8rem; }
.term { background: var(--term-bg); color: var(--term-ink); border-radius: 12px; overflow: hidden; min-width: 0; }
.term-title { display: flex; align-items: center; gap: 0.6rem; padding: 0.5rem 0.8rem; background: var(--term-bar); color: var(--term-dim); font: 500 0.78rem var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dots { display: inline-flex; gap: 0.3rem; }
.dots i { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: #3a3350; }
.term-body { padding: 0.9rem 1rem; font-size: 0.8rem; line-height: 1.6; white-space: pre-wrap; word-break: break-word; height: 21rem; overflow-y: auto; scrollbar-width: thin; }
.term-body .dim { color: var(--term-dim); }
.term-body .ok { color: var(--term-green); }
.term-body .warn { color: var(--term-red); }
.term-body .hi { color: var(--term-amber); }
.term-body .you { color: var(--term-violet); }
.term-body .caret { display: inline-block; width: 0.55em; height: 1.1em; vertical-align: -0.2em; background: var(--term-ink); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.term.solo .term-body { height: auto; font-size: 0.85rem; }
.toast { position: absolute; top: 4.4rem; right: 1.6rem; display: flex; gap: 0.7rem; align-items: flex-start; max-width: min(23rem, calc(100% - 2rem)); padding: 0.75rem 0.9rem; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--rule); border-radius: 14px; box-shadow: var(--shadow); font-size: 0.86rem; line-height: 1.4; z-index: 2; }
.toast[hidden] { display: none; }
.toast .toast-icon .mark { width: 1.8rem; height: 1.8rem; display: block; }
.toast b { display: block; font-weight: 600; }
.toast span { color: var(--muted); }
@media (prefers-reduced-motion: no-preference) { .toast:not([hidden]) { animation: slide 0.35s ease; } }
@keyframes slide { from { opacity: 0; transform: translateY(-8px); } }
.caption { margin-top: 0.9rem; min-height: 1.6em; color: var(--muted); font-size: 0.98rem; }
.caption b { color: var(--ink); }

/* planner */
.planner { background: var(--surface); border: 1px solid var(--rule); border-radius: 20px; padding: clamp(1rem, 3vw, 1.8rem); box-shadow: var(--shadow); }
.controls { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem 1.6rem; }
.controls label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.9rem; color: var(--muted); }
.controls output { font: 700 1.25rem var(--mono); color: var(--ink); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.timeline { margin-top: 1.6rem; }
.axis { position: relative; height: 1.3rem; margin-left: 6.5rem; font: 500 0.72rem var(--mono); color: var(--muted); }
.axis span { position: absolute; transform: translateX(-50%); }
.row { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.5rem; }
.row-label { flex: none; width: 6rem; font-size: 0.85rem; font-weight: 600; }
.track { position: relative; flex: 1; height: 2.3rem; background: var(--surface-2); border-radius: 8px; overflow: hidden; }
.track .work { position: absolute; top: 0; bottom: 0; background: repeating-linear-gradient(135deg, transparent 0 6px, color-mix(in srgb, var(--ink) 6%, transparent) 6px 12px); }
.track .win { position: absolute; top: 4px; bottom: 4px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font: 600 0.72rem var(--mono); color: #1b1530; overflow: hidden; white-space: nowrap; border: 2px solid var(--surface); }
.track .win.w0 { background: #ffd56a; } .track .win.w1 { background: #ffb347; } .track .win.w2 { background: #ff9a5a; } .track .win.w3 { background: #c9b6ff; } .track .win.w4 { background: #a593ff; } .track .win.w5 { background: #8fd8b0; }
.track .idle { position: absolute; top: 4px; bottom: 4px; border: 2px dashed var(--warn); border-radius: 6px; display: flex; align-items: center; justify-content: center; font: 600 0.72rem var(--sans); color: var(--warn); }
.verdict { margin-top: 1.3rem; font-size: 1.1rem; }
.verdict b { color: var(--sun-ink); }
.fine-print { margin-top: 0.5rem; font-size: 0.85rem; color: var(--muted); }

/* how */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; counter-reset: s; }
.steps li { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 1.3rem; }
.step-n { display: inline-grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; background: var(--sun-soft); color: var(--sun-ink); font: 700 0.95rem var(--display); }
.steps h3 { margin-top: 0.8rem; font-family: var(--display); font-size: 1.25rem; letter-spacing: -0.02em; }
.steps p { margin-top: 0.4rem; color: var(--muted); font-size: 0.94rem; }

.details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 2.5rem; }
.detail { padding-top: 1.2rem; border-top: 2px solid var(--ink); }
.detail h3 { font-family: var(--display); font-size: 1.2rem; letter-spacing: -0.02em; }
.detail p { margin-top: 0.4rem; color: var(--muted); }

.cli .term { box-shadow: var(--shadow); }

/* faq */
.faq { max-width: 50rem; }
.faq h2 { margin-bottom: 1.2rem; }
.faq details { border-top: 1px solid var(--rule); }
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; padding: 1rem 2rem 1rem 0; font-weight: 600; font-size: 1.04rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0.2rem; top: 0.85rem; font: 400 1.4rem var(--sans); color: var(--muted); }
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding: 0 0 1.1rem; color: var(--muted); }

.cta { text-align: center; padding-bottom: 1rem; }
.cta .cmd { max-width: 30rem; margin: 1.4rem auto 0.9rem; text-align: left; }

/* docs */
.docs { max-width: 72rem; margin: 0 auto; padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 2rem) 0; display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3.5rem); }
.toc { position: sticky; top: 1.5rem; align-self: start; font-size: 0.9rem; }
.toc p { font-weight: 600; margin-bottom: 0.5rem; }
.toc li { margin: 0.3rem 0; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--ink); }
.prose { max-width: 46rem; }
.prose h1 { font-family: var(--display); font-size: clamp(2rem, 5vw, 2.8rem); letter-spacing: -0.03em; line-height: 1.1; }
.prose h2 { font-family: var(--display); font-size: 1.55rem; letter-spacing: -0.02em; margin-top: 2.6rem; padding-top: 0.6rem; scroll-margin-top: 1rem; }
.prose p, .prose ul, .prose table, .prose pre, .prose .cmd { margin-top: 0.9rem; }
.prose ul { padding-left: 1.2rem; list-style: disc; }
.prose li { margin: 0.4rem 0; }
.prose li::marker { color: var(--sun); }
.block { background: var(--term-bg); color: var(--term-ink); padding: 0.95rem 1.1rem; border-radius: 12px; font-size: 0.85rem; line-height: 1.6; overflow-x: auto; }
.block .ok { color: var(--term-green); }
.block .dim { color: var(--term-dim); }
table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
th, td { text-align: left; padding: 0.55rem 0.7rem 0.55rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; font-size: 0.82rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; }
td code { white-space: nowrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-scroll { overflow-x: auto; }

/* footer */
.site-footer { max-width: 72rem; margin: clamp(4rem, 8vw, 6rem) auto 0; padding: 2rem clamp(1rem, 4vw, 2rem) 2.5rem; border-top: 1px solid var(--rule); }
.footer-inner { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.footer-brand p { margin-top: 0.5rem; color: var(--muted); font-size: 0.92rem; max-width: 22rem; }
.footer-links { display: grid; grid-template-columns: repeat(3, auto); gap: 0.5rem 2rem; font-size: 0.92rem; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--ink); }
.fine { margin-top: 1.8rem; font-size: 0.8rem; color: var(--muted); }
.fine a { color: inherit; }

.notfound { text-align: center; padding-top: 5rem; }
.notfound h1 { font-family: var(--display); font-size: 3rem; letter-spacing: -0.03em; }
.notfound p { margin-top: 0.8rem; color: var(--muted); }

@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); }
  .panes { grid-template-columns: minmax(0, 1fr); }
  .term-body { height: 15rem; }
  .docs { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; }
  .toc ol { display: flex; flex-wrap: wrap; gap: 0.2rem 1rem; }
}
@media (max-width: 640px) {
  .controls { grid-template-columns: minmax(0, 1fr); }
  .details { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .footer-links { grid-template-columns: repeat(2, auto); }
  .row-label { width: 4.6rem; font-size: 0.78rem; }
  .axis { margin-left: 5.1rem; }
  .toast { top: auto; bottom: 3.6rem; right: 0.8rem; left: 0.8rem; max-width: none; }
  .chapters { order: 3; flex-basis: 100%; }
  .cmd pre { font-size: 0.82rem; }
  .prose table { display: block; overflow-x: auto; }
}