@charset "UTF-8";


:root {
  --c-bg:           #EEEFEF;
  --c-surface:      #FFFFFF;
  --c-surface-alt:  #F6F2FB;
  --c-line:         #C0C0C0;
  --c-line-strong:  #919090;

  --c-text:         #241F29;
  --c-text-sub:     #5C5563;
  --c-text-inv:     #FFFFFF;

  --c-primary:      #C689FB;
  --c-primary-soft: #D7A8F8;
  --c-cta:          #A23EF9;
  --c-cta-dark:     #8C22EB;

  --c-accent2:      #A2DDAC;

  --c-mark:         #FA0757;

  --c-btn:          #F97316;
  --c-btn-dark:     #E4620A;

  --font-sans: "Noto Sans JP", system-ui, sans-serif;
  --font-round: "Zen Maru Gothic", "Noto Sans JP", sans-serif;
  --font-hand:  var(--font-round);

  --fs-hero:    clamp(30px, 5.2vw, 60px);
  --fs-h2:      clamp(24px, 3.4vw, 38px);
  --fs-h3:      clamp(19px, 2.2vw, 24px);
  --fs-lead:    clamp(17px, 1.8vw, 21px);
  --fs-body:    17px;
  --fs-small:   13.5px;
  --fs-eyebrow: 12px;
  --fs-price:   clamp(32px, 4.4vw, 52px);

  --sp-1: 4px;   --sp-2: 8px;   --sp-3: 16px;  --sp-4: 24px;
  --sp-5: 32px;  --sp-6: 48px;  --sp-7: 80px;  --sp-8: 120px; --sp-9: 160px;
  --section-y: clamp(72px, 11vw, 140px);
  --chapter-y: clamp(96px, 15vw, 200px);

  --container: 1120px;
  --measure:   42em;

  --radius-sm:   6px;
  --radius-md:   14px;
  --radius-lg:   28px;
  --radius-pill: 999px;

  --shadow-1:   0 1px 2px rgba(36, 31, 41, .06);
  --shadow-2:   0 8px 24px rgba(36, 31, 41, .10);
  --shadow-3:   0 20px 48px rgba(36, 31, 41, .14);
  --shadow-cta: 0 10px 24px rgba(162, 62, 249, .30);
  --shadow-btn: 0 8px 20px rgba(194, 65, 12, .26);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; }

h1, h2, h3 { margin: 0; }
p          { margin: 0; }

.num, .price { font-variant-numeric: tabular-nums; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

.measure { max-width: var(--measure); }

.band--bg    { background: var(--c-bg); }
.band--white { background: var(--c-surface); }
.band--alt   { background: var(--c-surface-alt); }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--c-text);
  margin: 0 0 var(--sp-3);
}
.eyebrow::after {
  content: "";
  display: block;
  width: 28px; height: 2px;
  margin-top: var(--sp-2);
  background: var(--c-cta);
}

.lead {
  font-size: var(--fs-lead);
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: .02em;
  color: var(--c-text-sub);
  font-feature-settings: "palt" 1;
}

.note-hand {
  font-family: var(--font-round);
  font-size: 15px;
  color: var(--c-text-sub);
  letter-spacing: .04em;
}

.mark {
  background: linear-gradient(transparent 62%, var(--c-primary) 62%);
  padding-bottom: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 56px;
  padding: 18px 40px;
  border: 0;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .06em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .25s ease, box-shadow .25s ease, transform .25s ease, color .25s ease, border-color .25s ease;
}

.btn--cta {
  background: var(--c-btn);
  color: var(--c-text-inv);
  box-shadow: var(--shadow-btn);
}
.btn--cta:hover {
  background: var(--c-btn-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(194, 65, 12, .30);
}
.btn--cta:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(194, 65, 12, .30); }

.btn--ghost {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-line-strong);
}
.btn--ghost:hover { border-color: var(--c-btn); color: var(--c-btn); }

.btn:focus-visible {
  outline: 3px solid var(--c-text);
  outline-offset: 3px;
}
.btn[disabled], .btn--disabled {
  background: var(--c-line);
  color: var(--c-text-inv);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.btn__arrow { transition: transform .25s ease; }
.btn:hover .btn__arrow { transform: translateX(4px); }

.hd {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: 72px;
  display: flex; align-items: center;
  background: rgba(238, 239, 239, .86);
  backdrop-filter: blur(10px);
  transition: box-shadow .3s ease;
}
.hd.is-scrolled { box-shadow: var(--shadow-1); }
.hd__inner {
  width: 100%; max-width: var(--container);
  margin-inline: auto; padding-inline: var(--sp-4);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-5);
}
.hd__logo {
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 1px; text-decoration: none; line-height: 1.25;
}
.hd__logo-main { font-weight: 700; font-size: 23px; letter-spacing: .1em; }
.hd__logo-sub {
  font-family: var(--font-round);
  font-size: 11.5px; font-weight: 400; letter-spacing: .04em;
  color: var(--c-text-sub);
}
.hd__nav  { display: flex; gap: var(--sp-5); }
.hd__nav a {
  font-size: 14px; font-weight: 500; text-decoration: none;
  padding-bottom: 4px; border-bottom: 2px solid transparent;
  transition: border-color .2s ease, color .2s ease;
}
.hd__nav a:hover { border-bottom-color: var(--c-cta); color: var(--c-cta); }
.hd .btn { min-height: 46px; padding: 12px 24px; font-size: 14px; }

.fv {
  position: relative;
  padding-top: calc(72px + var(--sp-7));
  padding-bottom: var(--sp-7);
  overflow: hidden;
}

.fv__wave {
  position: absolute; left: 0; right: 0; bottom: -1px;
  width: 100%; height: clamp(48px, 7vw, 96px);
  display: block;
}

.blob {
  position: absolute; border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.illust { position: absolute; z-index: 1; pointer-events: none; }

@media (max-width: 768px) {
  :root { --container: 100%; }
  .container { padding-inline: 20px; }
  .hd { height: 60px; }
  .hd__nav { display: none; }
  .hd .btn { display: none; }
  .fv { padding-top: calc(60px + var(--sp-6)); }

  .sp-cta {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    height: 68px; display: flex; align-items: center; justify-content: center;
    background: var(--c-surface);
    border-top: 1px solid var(--c-line);
    transform: translateY(100%);
    transition: transform .3s ease;
  }
  .sp-cta.is-in { transform: translateY(0); }
  .sp-cta .btn { min-height: 48px; padding: 12px 32px; font-size: 15px; }
}
@media (min-width: 769px) { .sp-cta { display: none; } }

@media (prefers-reduced-motion: reduce) {
  .blob, .illust { animation: none !important; }
}