:root {
  --cream: #F5EFE0;
  --cream-deep: #EAE0C8;
  --cream-card: #FBF7EC;
  --maroon: #7B2D26;
  --forest: #1F3D2B;
  --ink: #2A2622;
  --muted: #453F38;
  --rule: #D8CDB4;
  --tag-today: #8A4A12;
  --paper: #FFFFFF;

  --font-size-base: 19px;
  --serif: "Noto Serif JP", serif;
  --sans: "Noto Sans JP", system-ui, sans-serif;

  --measure: 68ch;
  --gutter: clamp(1.25rem, 5vw, 4rem);
}

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


body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--font-size-base);
  line-height: 1.9;
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3 {
  font-family: var(--serif); font-weight: 700; line-height: 1.45;
  overflow-wrap: anywhere; word-break: auto-phrase;
}

.wrap { max-width: 1120px; margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-size: 0.85em;
  letter-spacing: 0.18em;
  color: var(--maroon);
  font-weight: 700;
}

.section { padding-block: clamp(3rem, 8vw, 6rem); border-top: 1px solid var(--rule); }
.section__num { font-family: var(--serif); color: var(--maroon); margin-right: 0.75em; }

.btn {
  display: inline-block;
  padding: 0.9em 1.6em;
  font-size: 1.02em;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
}
.btn--primary { background: var(--maroon); color: var(--cream); }
.btn--ghost { border: 1px solid var(--ink); color: var(--ink); }
.btn:focus-visible { outline: 3px solid var(--forest); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

.hero { padding-block: clamp(2.5rem, 7vw, 5.5rem); }
.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (min-width: 900px) { .hero__grid { grid-template-columns: 1.05fr 0.95fr; } }

.hero__title { font-size: clamp(2rem, 4.6vw, 3.1rem); margin-block: 0.6em 0.5em; }
.hero__title em { color: var(--maroon); font-style: normal; }
.hero__lede { max-width: var(--measure); color: var(--muted); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.hero__cover {
  width: 100%; height: auto; border-radius: 3px;
  box-shadow: 0 18px 44px rgba(42, 38, 34, 0.18);
}

.proof { background: var(--cream-deep); padding-block: clamp(2rem, 4vw, 3rem); }
.proof__grid { display: grid; gap: 2rem; }
@media (min-width: 820px) { .proof__grid { grid-template-columns: repeat(3, 1fr); } }
.proof [data-proof] strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.3em;
  color: var(--maroon);
  margin-bottom: 0.4em;
}
.proof [data-proof] span { font-size: 0.9em; color: var(--muted); }

.inside__lede { max-width: var(--measure); color: var(--muted); margin-block: 1.5rem; }
.inside__list { max-width: var(--measure); padding-left: 0; list-style: none; }
.inside__list li { position: relative; padding-left: 1.8em; margin-bottom: 0.9em; }
.inside__list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--maroon); font-weight: 700;
}

.chapters__grid { display: grid; gap: 1.25rem; margin-top: 2.5rem; }
@media (min-width: 760px) { .chapters__grid { grid-template-columns: repeat(2, 1fr); } }
.chapter {
  background: var(--cream-deep);
  border-left: 3px solid var(--forest);
  padding: 1.5rem 1.75rem;
}
.chapter .chapter__tag {
  font-size: 0.85em; letter-spacing: 0.14em; color: var(--maroon); font-weight: 700;
}
.chapter h3 { font-size: 1.15em; margin-block: 0.5em 0.4em; }
.chapter p { font-size: 0.9em; color: var(--muted); }

.sample__grid { display: grid; gap: 2.5rem; margin-top: 2.5rem; }
@media (min-width: 900px) { .sample__grid { grid-template-columns: 1.15fr 0.85fr; } }

.fast {
  background: var(--cream-card);
  border-left: 4px solid var(--maroon);
  padding: 1.75rem;
}
.fast__tag { font-size: 0.7em; letter-spacing: 0.14em; color: var(--maroon); font-weight: 700; }
.fast__title { font-size: 1.3em; margin-block: 0.5em 0.5em; }
.fast__lede { font-size: 0.9em; color: var(--muted); margin-bottom: 1.5rem; }
.fast__list { display: grid; gap: 1rem; }
.fast__list div { display: grid; grid-template-columns: 4.5rem 1fr; gap: 1rem; align-items: start; }
.fast__list dt {
  font-family: var(--serif); font-size: 1.6em; color: var(--maroon); line-height: 1;
}
.fast__list dt span {
  display: block; font-family: var(--sans); font-size: 0.4em; color: var(--ink);
  margin-top: 0.4em; letter-spacing: 0.06em;
}
.fast__list dd { margin: 0; font-size: 0.92em; }
.fast__alert {
  margin-top: 1.75rem; padding: 1rem 1.25rem;
  background: var(--maroon); color: var(--cream);
  font-weight: 700; text-align: center; font-size: 1.05em;
}
.fast__note { margin-top: 0.75rem; font-size: 0.82em; color: var(--muted); text-align: center; }
.sample__fn { margin-top: 1.5rem; font-size: 0.78em; color: var(--muted); }
.who__list { margin-block: 1.5rem; }
.who__note {
  max-width: var(--measure); font-size: 0.88em; color: var(--muted);
  border-left: 3px solid var(--rule); padding-left: 1.25rem;
}

.about__grid { display: grid; gap: 2.5rem; }
@media (min-width: 900px) { .about__grid { grid-template-columns: 1.2fr 0.8fr; } }
.about__body { max-width: var(--measure); margin-bottom: 1.25rem; }
.about__links { margin-top: 1.75rem; }
.about__sources {
  background: var(--cream-deep); padding: 1.75rem; align-self: start;
}
.about__sources h3 { font-size: 1em; margin-bottom: 1rem; }
.about__sources ul { padding-left: 1.1em; }
.about__sources li { font-size: 0.84em; color: var(--muted); margin-bottom: 0.6em; }

.signup { background: var(--forest); color: var(--cream); border-top: none; }
.signup .eyebrow { color: var(--cream-deep); }
.signup .btn--primary { background: var(--cream); color: var(--maroon); }
.signup h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); margin-block: 0.5em 0.6em; }
.signup__inner { max-width: 720px; text-align: center; }
.signup__lede { color: var(--cream-deep); font-size: 0.95em; }
.signup__form { margin-block: 2.5rem 1.5rem; }
.kit-fallback { display: grid; gap: 0.75rem; }
.kit-fallback label { font-size: 0.85em; text-align: left; }
.kit-fallback input {
  padding: 0.9em 1em; font-size: 1em; font-family: var(--sans);
  border: 1px solid var(--rule); border-radius: 2px;
}
.signup__note { font-size: 0.78em; color: var(--cream-deep); line-height: 1.8; }

/* Kit embed — blend the third-party form into the signup section.
   Kit ships inline styles and its own palette, so these need !important. */
.signup__form .formkit-form {
  background-color: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
  padding: 0 !important;
  max-width: none !important;
  font-family: var(--sans) !important;
}
.signup__form .formkit-header,
.signup__form .formkit-subheader,
.signup__form .formkit-guarantee {
  display: none !important;
}
.signup__form .formkit-field { margin: 0 0 0.75rem !important; }
.signup__form .formkit-input {
  width: 100% !important;
  font-family: var(--sans) !important;
  font-size: 1em !important;
  line-height: 1.6 !important;
  color: var(--ink) !important;
  padding: 0.9em 1em !important;
  border: 1px solid var(--rule) !important;
  border-radius: 2px !important;
  background: var(--paper) !important;
}
.signup__form .formkit-input::placeholder { color: var(--muted) !important; opacity: 1 !important; }
.signup__form .formkit-submit {
  width: 100% !important;
  background-color: var(--cream) !important;
  border: 0 !important;
  border-radius: 2px !important;
  padding: 0.9em 1.6em !important;
}
.signup__form .formkit-submit > span {
  color: var(--maroon) !important;
  font-family: var(--sans) !important;
  font-size: 1.02em !important;
  font-weight: 700 !important;
}
.signup__form .formkit-submit:focus-visible { outline: 3px solid var(--cream) !important; outline-offset: 3px !important; }
.signup__form .formkit-powered-by-convertkit-container {
  margin: 1.25rem 0 0 !important;
}
/* Kit's badge is dark ink; on the forest ground it would vanish. The free plan
   requires this to stay visible, so invert it rather than dim it. */
.signup__form .formkit-powered-by-convertkit-container a,
.signup__form a.formkit-powered-by-convertkit {
  filter: invert(1) !important;
  opacity: 0.75 !important;
}
.signup__form .formkit-alert {
  font-family: var(--sans) !important;
  font-size: 0.85em !important;
  border-radius: 2px !important;
}