:root {
  color-scheme: dark;
  --bg: #0d0f0c;
  --ink: #f4f5ef;
  --muted: #a8aa9e;
  --panel: #171914;
  --panel-2: #20231c;
  --line: #34382d;
  --accent: #d8ff5b;
  --danger: #ffd1c6;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100svh;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, textarea { font: inherit; }
button { touch-action: manipulation; }
button:focus-visible, input:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.app-shell { min-height: 100svh; padding: 0 18px 64px; }
.topbar {
  max-width: 980px;
  min-height: 66px;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 44px 1fr 88px;
  align-items: center;
  gap: 10px;
}
.home-link {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--ink);
  text-decoration: none;
  font-size: 23px;
  font-weight: 900;
}
.brand {
  text-align: center;
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .13em;
  color: var(--accent);
}
.ghost {
  min-height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 5px;
  cursor: pointer;
}
.ghost.small { font-size: 12px; font-weight: 850; }

.view { display: none; max-width: 980px; margin: 0 auto; }
.view.active { display: block; }
.hidden { display: none !important; }

.hero { padding: 56px 0 40px; }
.eyebrow, .step-label {
  margin: 0 0 13px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .11em;
}
.hero h1, .field-wrap > h1 {
  margin: 0;
  font-size: clamp(42px, 8vw, 86px);
  line-height: .98;
  letter-spacing: -.062em;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.lead {
  max-width: 720px;
  margin: 26px 0 0;
  color: #d0d2c8;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.72;
  font-weight: 700;
}
.lead.compact { margin-top: 14px; }

.rule-card, .anchor-card, .axis-card {
  margin-top: 26px;
  background: var(--panel);
  border-left: 5px solid var(--accent);
  padding: 19px 20px;
  display: grid;
  gap: 7px;
}
.rule-card span, .anchor-card span, .axis-card span,
.scenario-card span, .request-preview span, .reaction-card span, .reply-card span,
.script-head span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .1em;
}
.rule-card strong, .anchor-card strong, .axis-card strong {
  font-size: 17px;
  line-height: 1.55;
}

.hero-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.primary, .secondary {
  min-height: 56px;
  padding: 0 22px;
  border-radius: 5px;
  font-weight: 950;
  cursor: pointer;
  transition: transform .14s ease, opacity .14s ease;
}
.primary { border: 1px solid var(--accent); background: var(--accent); color: #10120d; }
.secondary { border: 1px solid #4a4f40; background: transparent; color: var(--ink); }
.primary:active, .secondary:active, .choice:active, .part-grid button:active, .preset-row button:active { transform: translateY(2px); }
.primary:disabled, .secondary:disabled { opacity: .45; cursor: default; }

.progress-strip, .best-line {
  margin-top: 20px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}
.progress-strip { display: flex; gap: 22px; flex-wrap: wrap; }

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.principles article { min-height: 178px; padding: 26px 20px 28px 0; }
.principles article + article { border-left: 1px solid var(--line); padding-left: 20px; }
.principles b { display: block; color: var(--accent); font-size: 12px; margin-bottom: 34px; }
.principles strong { display: block; font-size: 22px; margin-bottom: 8px; }
.principles p { margin: 0; color: var(--muted); line-height: 1.65; }

.training-head { padding-top: 34px; }
.step-rail { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 16px; }
.step-rail span { height: 5px; background: #30342a; }
.step-rail span.active { background: var(--accent); }
.scenario-card {
  padding: 18px 20px;
  border: 1px solid var(--line);
  background: #141611;
  display: grid;
  gap: 6px;
}
.scenario-card strong { font-size: 19px; }
.scenario-card p { margin: 2px 0 0; color: var(--muted); line-height: 1.6; }

.stage { max-width: 760px; margin: 38px auto 0; }
.stage h2 {
  margin: 0 0 10px;
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.06;
  letter-spacing: -.045em;
}
.helper { color: var(--muted); line-height: 1.65; }
.two-grid { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.choice {
  min-height: 134px;
  text-align: left;
  border: 1px solid #4a4f40;
  background: var(--panel);
  color: var(--ink);
  padding: 20px;
  cursor: pointer;
}
.choice:last-child { border-color: #5b6640; }
.choice span { display: block; color: var(--muted); font-size: 12px; font-weight: 850; margin-bottom: 22px; }
.choice strong { display: block; font-size: 21px; line-height: 1.25; }
.feedback {
  min-height: 48px;
  margin-top: 15px;
  border-left: 3px solid #5d634f;
  padding: 9px 0 9px 13px;
  color: #d8dbcf;
  font-weight: 750;
  line-height: 1.6;
}

.build-slots { margin: 20px 0; display: grid; gap: 8px; }
.build-slot { min-height: 72px; padding: 12px 14px; border: 1px dashed #4b5042; }
.build-slot.filled { border-style: solid; border-color: #69734a; background: #171a12; }
.build-slot span { color: var(--accent); font-size: 12px; font-weight: 900; }
.build-slot p { margin: 7px 0 0; line-height: 1.5; }
.part-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.part-grid button {
  min-height: 96px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--ink);
  padding: 14px;
  text-align: left;
  line-height: 1.55;
  cursor: pointer;
}

.request-preview, .reaction-card, .reply-card {
  margin: 18px 0;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.request-preview pre {
  margin: 14px 0 0;
  white-space: pre-wrap;
  font: inherit;
  font-size: 17px;
  line-height: 1.8;
  font-weight: 750;
}
.reaction-card { border-color: #6c493e; background: #211713; }
.reaction-card strong { display: block; margin-top: 11px; color: var(--danger); font-size: clamp(22px, 4vw, 33px); line-height: 1.35; }
.reply-card p { margin: 11px 0 0; font-size: 18px; line-height: 1.75; font-weight: 750; }
.reaction-actions { margin-top: 18px; }

.score-ring {
  width: 150px;
  aspect-ratio: 1;
  border: 10px solid var(--accent);
  border-radius: 50%;
  display: grid;
  place-content: center;
  text-align: center;
  margin-bottom: 25px;
}
.score-ring span { color: var(--muted); font-size: 12px; font-weight: 900; }
.score-ring strong { margin-top: 5px; font-size: 38px; line-height: 1; }
.result-checks { display: grid; gap: 8px; margin-top: 22px; }
.result-checks > div {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 11px;
  align-items: start;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 14px;
}
.result-checks > div > span { color: var(--accent); font-size: 22px; font-weight: 950; }
.result-checks p { margin: 0; display: grid; gap: 3px; }
.result-checks small { color: var(--muted); line-height: 1.5; }
.result-quote { margin-top: 17px; padding: 17px; background: var(--accent); color: #10120d; font-weight: 950; font-size: 17px; line-height: 1.55; }

.field-wrap { padding-top: 44px; }
.field-wrap > h1 { font-size: clamp(38px, 7vw, 72px); }
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 21px 0; }
.preset-row button {
  min-height: 42px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--ink);
  padding: 0 14px;
  font-size: 13px;
  font-weight: 850;
  cursor: pointer;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid label { display: grid; gap: 8px; border: 1px solid var(--line); background: var(--panel); padding: 15px; }
.form-grid label span { color: var(--accent); font-size: 12px; font-weight: 900; }
.form-grid input, .form-grid textarea {
  width: 100%;
  border: 0;
  outline: 0;
  resize: vertical;
  background: transparent;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
}
.form-grid input::placeholder, .form-grid textarea::placeholder { color: #74786d; }
.script-card { margin-top: 15px; border-radius: 5px; padding: 19px; background: #f0f1e9; color: #151713; }
.script-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.script-head span { color: #676b61; }
.script-head button {
  min-height: 38px;
  border: 1px solid #22251f;
  border-radius: 4px;
  background: transparent;
  color: #151713;
  padding: 0 12px;
  font-weight: 900;
  cursor: pointer;
}
.script-head button:disabled { opacity: .42; cursor: default; }
.script-card pre { margin: 16px 0 0; white-space: pre-wrap; font: inherit; font-size: 17px; line-height: 1.82; font-weight: 750; }
.copy-feedback { min-height: 18px; margin: 8px 0 0; color: #676b61; font-size: 12px; }

@media (max-width: 720px) {
  .app-shell { padding-inline: 15px; padding-bottom: 42px; }
  .topbar { min-height: 60px; grid-template-columns: 42px 1fr 78px; }
  .brand { font-size: 12px; letter-spacing: .1em; }
  .hero { padding-top: 42px; }
  .hero-actions { display: grid; }
  .primary, .secondary { width: 100%; }
  .principles { grid-template-columns: 1fr; }
  .principles article { min-height: 0; padding: 21px 0; }
  .principles article + article { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .principles b { margin-bottom: 16px; }
  .two-grid, .part-grid, .form-grid { grid-template-columns: 1fr; }
  .choice { min-height: 108px; }
  .choice span { margin-bottom: 13px; }
  .stage { margin-top: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  .primary, .secondary, .choice, .part-grid button, .preset-row button { transition: none; }
}