:root {
  --ink: #0b0d12;
  --ink-2: #10131a;
  --line: #232833;
  --text: #eceae3;
  --muted: #9aa1ad;
  --accent: #e0603c;
  --accent-soft: #f0876a;
  --blue: #5b9dd9;
  --green: #4ea373;
  --add-bg: rgba(78, 163, 115, 0.12);
  --del-bg: rgba(224, 96, 60, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--ink);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }
p a, .footer a { color: var(--accent-soft); }

h1 { font-size: clamp(38px, 6vw, 64px); line-height: 1.08; letter-spacing: -0.02em; font-weight: 700; }
h1 em { font-style: normal; color: var(--accent); }
h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.15; letter-spacing: -0.015em; font-weight: 700; }
h3 { font-size: 19px; font-weight: 600; margin-bottom: 8px; }

.eyebrow {
  font: 600 13px/1 ui-monospace, 'SF Mono', Menlo, monospace;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 18px;
}

.section-lede { color: var(--muted); max-width: 640px; margin: 18px 0 40px; font-size: 19px; }

/* nav */
.nav { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(11, 13, 18, 0.88); backdrop-filter: blur(10px); z-index: 10; }
.nav-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 18px; }
.brand-kanji { color: var(--accent); margin-right: 2px; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }

/* buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 8px;
  transition: background 0.15s;
}
.btn:hover { background: var(--accent-soft); color: #fff; }
.btn-small { padding: 9px 18px; font-size: 14px; color: #fff; }
.btn-ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
.btn-ghost:hover { background: var(--ink-2); border-color: var(--muted); }
.btn-big { font-size: 20px; padding: 18px 36px; font-family: ui-monospace, 'SF Mono', Menlo, monospace; }

/* hero */
.hero { padding: 110px 0 80px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px 56px; align-items: center; }
.hero-head { grid-column: 1 / -1; }
.hero-head h1 { margin: 0; }
.hero .lede { color: var(--muted); font-size: 21px; max-width: 700px; margin: 28px 0 28px; }
.tldr {
  max-width: 700px;
  margin: 0 0 40px;
  padding: 16px 20px;
  border-left: 3px solid var(--accent);
  background: var(--ink-2);
  border-radius: 0 8px 8px 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
}
.tldr-k {
  font: 600 12px/1 ui-monospace, 'SF Mono', Menlo, monospace;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-right: 10px;
}
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* PR demo */
.hero-grid .pr-demo { margin-top: 0; max-width: none; }
.pr-demo {
  margin-top: 56px;
  max-width: 680px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--ink-2);
  overflow: hidden;
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7);
}
.pr-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--line);
  font: 500 13px/1 ui-monospace, 'SF Mono', Menlo, monospace;
}
.pr-file { color: var(--text); }
.pr-badge { font-size: 12px; color: var(--muted); }
.pr-open { color: var(--green); }

.pr-diff {
  font: 13px/1.7 ui-monospace, 'SF Mono', Menlo, monospace;
  padding: 10px 0; border-bottom: 1px solid var(--line);
  background: var(--ink);
}
.dl { display: flex; padding: 0 8px; white-space: pre; }
.dl-add { background: var(--add-bg); }
.dl-del { background: var(--del-bg); }
.dl-n { width: 30px; color: #59606d; text-align: right; padding-right: 12px; user-select: none; }
.dl-s { width: 14px; color: var(--muted); }
.dl-add .dl-s { color: var(--green); }
.dl-del .dl-s { color: var(--accent); }
.dl-t { color: var(--text); }
.dl-ctx .dl-t { color: var(--muted); }

.pr-thread { padding: 8px 18px 18px; }
.pr-comment { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.pr-comment:last-child { border-bottom: none; padding-bottom: 4px; }
.ava {
  flex: none; width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center; font-size: 15px; font-weight: 700; color: #fff;
}
.ava-bot { background: linear-gradient(135deg, var(--accent), #b8492c); }
.ava-agent { background: linear-gradient(135deg, var(--blue), #3f77ad); }
.ava-human { background: #2d3340; color: var(--text); font-size: 12px; }
.pr-body { flex: 1; min-width: 0; }
.pr-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; flex-wrap: wrap; }
.pr-name { font-weight: 600; font-size: 14px; color: var(--text); }
.pr-time { color: var(--muted); font-size: 13px; }
.tag {
  font: 600 10px/1 ui-monospace, Menlo, monospace; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 3px 6px; border-radius: 5px; border: 1px solid var(--line);
}
.tag-bot { color: var(--accent); border-color: rgba(224, 96, 60, 0.4); }
.tag-human { color: var(--blue); border-color: rgba(91, 157, 217, 0.4); }
.pr-body p { color: var(--muted); font-size: 14px; line-height: 1.55; }
.pr-body code {
  font: 12.5px ui-monospace, Menlo, monospace; background: var(--ink);
  border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; color: var(--text);
}
.pr-body strong { color: var(--text); }
.mention { color: var(--blue); font-weight: 600; }
.pr-react { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.react {
  font-size: 13px; color: var(--muted); border: 1px solid var(--blue);
  background: rgba(91, 157, 217, 0.12); border-radius: 20px; padding: 3px 10px;
}
.pr-resolved {
  font-size: 12px; font-weight: 600; color: var(--green);
  background: var(--add-bg); border-radius: 6px; padding: 4px 10px;
}

/* proof */
.proof { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--ink-2); }
.proof .card { background: var(--ink); }
.proof-note { color: var(--muted); font-size: 16px; margin-top: 36px; max-width: 700px; }

/* sections */
section { padding: 96px 0; }
.problem { border-bottom: 1px solid var(--line); }
.how { border-bottom: 1px solid var(--line); }
.trust { background: var(--ink-2); border-bottom: 1px solid var(--line); }
.included { border-bottom: 1px solid var(--line); }

/* cards */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 26px; background: var(--ink); }
.card p { color: var(--muted); font-size: 15px; }

/* steps */
.steps { list-style: none; max-width: 760px; }
.step { display: flex; gap: 24px; padding: 26px 0; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step-n { font: 700 15px/1.8 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--accent); min-width: 34px; }
.step p { color: var(--muted); font-size: 15px; }

/* included checklist */
.checks { list-style: none; max-width: 760px; }
.checks li { padding: 14px 0 14px 34px; border-bottom: 1px solid var(--line); position: relative; color: var(--text); }
.checks li::before { content: '✓'; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }

/* pricing */
.price-box { border: 1px solid var(--line); border-radius: 16px; padding: 40px; background: var(--ink-2); margin-top: 24px; }
.price-lead { display: flex; align-items: baseline; gap: 20px; flex-wrap: wrap; padding-bottom: 28px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.price-lead-lbl { align-self: flex-start; margin-top: 4px; color: var(--text); font-size: 18px; line-height: 1.5; max-width: 460px; }
.price-from { font: 600 16px/1 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--muted); }
.price-lead-sub { color: var(--muted); font-size: 15px; }
.price-formula { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.price-n { font: 700 56px/1 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--accent); letter-spacing: -0.02em; }
.price-op { font: 400 40px/1 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--muted); }
.price-var { color: var(--text); font-style: italic; }
.price-def { color: var(--muted); font-size: 16px; margin-top: 18px; max-width: 640px; }
.price-def strong { color: var(--text); }
.price-examples { display: flex; gap: 40px; flex-wrap: wrap; margin: 32px 0 0; padding-top: 28px; border-top: 1px solid var(--line); }
.example { display: flex; align-items: baseline; gap: 12px; color: var(--muted); font-size: 15px; }
.example-n { font: 700 24px/1 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--text); }
.price-note { color: var(--muted); font-size: 15px; margin-top: 28px; }

/* event list */
.events { list-style: none; max-width: 820px; }
.events-head { display: grid; grid-template-columns: 220px 20px 1fr; gap: 24px; max-width: 820px; padding-bottom: 8px; }
.event-col { font: 600 12px/1 ui-monospace, 'SF Mono', Menlo, monospace; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.event { display: grid; grid-template-columns: 220px 20px 1fr; gap: 24px; padding: 20px 0; border-top: 1px solid var(--line); }
.event:last-child { border-bottom: 1px solid var(--line); }
.event-h { font-weight: 600; color: var(--text); }
.event-arrow { color: var(--accent); font-weight: 600; }
.event-t { color: var(--muted); font-size: 15px; }

/* pricing stages */
.stages { list-style: none; }
.stage { display: grid; grid-template-columns: 34px 1fr auto; align-items: baseline; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); }
.stage:last-child { border-bottom: 1px solid var(--line); }
.stage-n { font: 700 15px/1.6 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--accent); }
.stage-body h3 { margin: 0; }
.stage-body p { color: var(--muted); font-size: 15px; margin-top: 6px; }
.stage-p { font: 700 22px/1 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--text); white-space: nowrap; text-align: right; }
.stages-cap { text-transform: uppercase; letter-spacing: 0.08em; font-size: 12px; color: var(--muted); margin: 28px 0 4px; }
.stage-flag { display: inline-flex; align-self: start; margin-top: 1px; color: var(--accent); }
.stage-p-note { display: block; font: 500 11px/1.4 ui-monospace, 'SF Mono', Menlo, monospace; color: var(--muted); text-align: right; letter-spacing: 0.04em; margin-top: 5px; }

/* final */
.final { text-align: center; padding: 120px 0; }
.final .section-lede { margin: 18px auto 40px; }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
.footer-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* flow diagram */
.flow { border-bottom: 1px solid var(--line); }
.flow-diagram { margin-top: 28px; overflow-x: auto; }
.flow-diagram svg { display: block; width: 100%; min-width: 760px; height: auto; }
.d-node { fill: var(--ink-2); stroke: var(--line); stroke-width: 1; }
.d-node-h { stroke: var(--accent); stroke-width: 2; fill: rgba(224, 96, 60, 0.06); }
.d-node-a { stroke: var(--accent); stroke-width: 2; }
.d-node-b { stroke: var(--accent-soft); stroke-width: 2; }
.d-chip { fill: rgba(255, 255, 255, 0.025); stroke: var(--line); stroke-width: 1; }
.flow-diagram text { font-family: ui-monospace, 'SF Mono', Menlo, monospace; }
.d-title { fill: var(--text); font-size: 20px; font-weight: 700; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
.d-sub { fill: var(--muted); font-size: 12px; }
.d-chip-t { fill: var(--text); font-size: 13px; }
.d-chip-s { fill: var(--muted); font-size: 11px; }
.d-cap { fill: var(--accent); font-size: 10.5px; letter-spacing: 0.1em; }
.d-cap-n { fill: var(--muted); font-size: 10.5px; letter-spacing: 0.1em; }
.d-lbl { fill: var(--muted); font-size: 12px; }
.d-lbl-em { fill: var(--text); font-size: 12px; }

/* get-started modal (CSS-only, hidden-checkbox toggle) */
.modal-toggle { position: absolute; width: 0; height: 0; opacity: 0; pointer-events: none; }
label.btn { cursor: pointer; }
.modal { display: none; position: fixed; inset: 0; z-index: 50; place-items: center; padding: 24px; }
.modal-toggle:checked ~ .modal { display: grid; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.66); backdrop-filter: blur(3px); cursor: pointer; }
.modal-card {
  position: relative; z-index: 1; width: 100%; max-width: 460px;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 16px;
  padding: 36px; box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8);
}
.modal-card .eyebrow { margin-bottom: 10px; }
.modal-x { position: absolute; top: 14px; right: 20px; font-size: 26px; line-height: 1; color: var(--muted); cursor: pointer; }
.modal-x:hover { color: var(--text); }
.modal-title { font-size: 22px; line-height: 1.25; }
.modal-opt { margin-top: 22px; }
.modal-opt + .modal-opt { padding-top: 22px; border-top: 1px solid var(--line); }
.modal-opt h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.modal-opt p { color: var(--muted); font-size: 15px; margin-bottom: 16px; }
.modal-opt .btn { display: block; text-align: center; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 0; }
  .hero-grid .pr-demo { margin-top: 40px; max-width: 680px; }
}

@media (max-width: 820px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .event { grid-template-columns: auto 1fr; column-gap: 10px; row-gap: 6px; }
  .event-h { grid-column: 1 / -1; }
  .events-head { display: none; }
  .price-n { font-size: 40px; }
  .price-op { font-size: 28px; }
  .hero { padding: 70px 0 60px; }
  section { padding: 64px 0; }
  .nav-links a:not(.btn) { display: none; }
  .pr-demo { margin-top: 40px; }
  .pr-diff { font-size: 12px; }
  .flow-diagram { margin-left: -24px; margin-right: -24px; }
}