/* 心 LP・予約画面 共通。色は三つだけ（紙・墨・ブルーブラック）。 */
:root {
  --paper: #FAFAFA;
  --ink: #1A1A1A;
  --blue-black: #1F3A5F; /* 差し色。ボタンと返金額の数字にだけ使う */
  --lamp: #FFF7DF;       /* 節が出るときだけ一瞬灯る黄白。仕様§5bの色数を超える（2026-10-14 オーナー指示） */
  --serif: 'Noto Serif JP', serif;
  --mono: 'Courier Prime', monospace;
  --measure: 30rem;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 2;
  font-feature-settings: 'palt' 0;
  overflow-x: hidden;
}

.sheet {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.5rem;
}

p { margin: 0 0 1.25em; text-wrap: pretty; }
h1, h2, h3 { margin: 0; font-weight: 700; text-wrap: balance; word-break: auto-phrase; }
p, li, dd { word-break: auto-phrase; }

h2 {
  font-size: 1.375rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

section { padding: 5.5rem 0 0; }

/* 節の区切りは細い墨の線一本だけ */
.rule {
  border: 0;
  border-top: 1px solid var(--ink);
  width: 2.5rem;
  margin: 5.5rem 0 0;
}

.small { font-size: 0.875rem; line-height: 1.9; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.refund { color: var(--blue-black); }

/* 未確定の文言。差し替えるまで目立たせておく */
.todo {
  display: inline-block;
  border: 1px dashed var(--ink);
  padding: 0 0.4em;
  font-size: 0.875rem;
  line-height: 1.8;
}
.todo-block {
  border: 1px dashed var(--ink);
  padding: 1rem;
  font-size: 0.875rem;
  line-height: 1.9;
  margin: 0 0 1.25rem;
}

a { color: inherit; text-underline-offset: 0.25em; }

:focus-visible { outline: 2px solid var(--blue-black); outline-offset: 3px; }

.button {
  display: block;
  width: 100%;
  min-height: 3.5rem;
  border: 0;
  border-radius: 2px;
  background: var(--blue-black);
  color: var(--paper);
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0;
  cursor: pointer;
  touch-action: manipulation;
  text-align: center;
  text-decoration: none;
  padding: 0.9rem 1rem;
  transition: opacity 120ms ease-out;
}
.button:active { opacity: 0.8; }
.button[disabled] { opacity: 0.45; cursor: default; }

.button-quiet {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}

/* 節が出てくるときの灯り。グラデーションは使わず、単色をぼかして柔らかくする */
html { overflow-x: clip; }
[data-reveal] { position: relative; }
[data-reveal]::after {
  content: '';
  position: absolute;
  z-index: -1;
  left: 4%;
  right: 4%;
  top: 10%;
  bottom: 0;
  border-radius: 50%;
  background: var(--lamp);
  filter: blur(36px);
  opacity: 0;
  transform: scale(0.85);
  pointer-events: none;
}
.reveal-on [data-reveal] > * {
  opacity: 0;
  transform: translateY(14px);
}
.reveal-on [data-reveal].is-lit > * {
  opacity: 1;
  transform: none;
  transition: opacity 700ms ease-out, transform 700ms ease-out;
}
.reveal-on [data-reveal].is-lit > *:nth-child(2) { transition-delay: 90ms; }
.reveal-on [data-reveal].is-lit > *:nth-child(3) { transition-delay: 180ms; }
.reveal-on [data-reveal].is-lit > *:nth-child(n+4) { transition-delay: 270ms; }
.reveal-on [data-reveal].is-lit::after {
  opacity: 0.6;
  transform: scale(1);
  transition: opacity 600ms ease-out, transform 900ms ease-out;
}
.reveal-on [data-reveal].is-settled::after {
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 1600ms ease-in, transform 1600ms ease-in;
}

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