:root{
  --bg:#f3f0e8;
  --paper:#faf8f2;
  --ink:#20201d;
  --sub:#77736a;
  --line:#c9c3b8;
  --accent:#8a342d;
  --accent-soft:#b58179;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  min-height:100vh;

  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(255,255,255,.42),
      transparent 36rem
    ),
    var(--bg);

  color:var(--ink);

  font-family:
    "Noto Serif JP",
    "Yu Mincho",
    "YuMincho",
    serif;

  font-weight:400;
  line-height:1.95;
}

button,
textarea{
  font:inherit;
}

button{
  -webkit-tap-highlight-color:transparent;
}

main{
  width:min(720px,calc(100% - 40px));
  margin:0 auto;
  padding:68px 0 90px;
}


/* -------------------------
   HEADER
------------------------- */

.eyebrow{
  margin-bottom:29px;
  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:10px;
  letter-spacing:.24em;
}

h1{
  margin:0;

  font-family:
    "Zen Old Mincho",
    "Yu Mincho",
    serif;

  font-size:clamp(41px,8vw,72px);
  font-weight:500;
  letter-spacing:.10em;
  line-height:1.18;
}

.english{
  margin:9px 0 47px;

  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:11px;
  letter-spacing:.18em;
}

.intro{
  max-width:570px;
  margin-bottom:52px;
  font-size:15px;
}

.intro strong{
  color:var(--accent);
  font-weight:500;
}


/* -------------------------
   INPUT
------------------------- */

.input-area{
  transition:
    opacity .7s ease,
    transform .7s ease;
}

.input-area.leaving{
  opacity:0;
  transform:translateY(-8px);
}

label{
  display:block;
  margin-bottom:12px;
  font-size:13px;
}

textarea{
  display:block;

  width:100%;
  min-height:195px;
  padding:20px;

  resize:vertical;

  border:1px solid var(--line);
  border-radius:0;
  outline:none;

  background:rgba(255,255,255,.40);
  color:var(--ink);

  font-size:15px;
  line-height:1.95;

  transition:
    border-color .25s ease,
    background .25s ease;
}

textarea:focus{
  border-color:#817a6d;
  background:var(--paper);
}

textarea::placeholder{
  color:#9d988e;
}

.meta{
  display:flex;
  justify-content:space-between;
  gap:20px;

  margin-top:8px;

  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:10px;
}

button{
  appearance:none;

  min-height:44px;
  padding:11px 22px;

  border:1px solid var(--ink);
  border-radius:0;

  background:transparent;
  color:var(--ink);

  cursor:pointer;

  font-size:13px;
  letter-spacing:.10em;

  transition:
    background .2s ease,
    color .2s ease,
    border-color .2s ease,
    opacity .2s ease;
}

button:hover{
  background:var(--ink);
  color:var(--paper);
}

button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:4px;
}

button:disabled{
  opacity:.3;
  cursor:not-allowed;
}

button:disabled:hover{
  background:transparent;
  color:var(--ink);
}

#readButton{
  margin-top:28px;
}


/* -------------------------
   REVEAL / RITUAL
------------------------- */

.reveal{
  min-height:72vh;

  display:flex;
  flex-direction:column;
  justify-content:center;

  padding:48px 0;
}

.reveal[hidden]{
  display:none;
}

.reveal-copy,
.missing-caption{
  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:10px;
  letter-spacing:.22em;
}

.reveal-copy{
  margin-bottom:27px;
}

.ghost-text{
  max-width:650px;

  font-size:17px;
  line-height:2.15;
  white-space:pre-wrap;
  overflow-wrap:anywhere;

  opacity:1;
  filter:blur(0);
  transform:translateY(0);

  transition:
    opacity 1.5s ease,
    filter 1.5s ease,
    transform 1.5s ease;
}

.ghost-text.fade{
  opacity:.025;
  filter:blur(3px);
  transform:translateY(-6px);
}

.missing-reveal{
  margin-top:44px;

  opacity:0;
  transform:translateY(14px);

  transition:
    opacity 1.2s ease,
    transform 1.2s ease;
}

.missing-reveal.show{
  opacity:1;
  transform:none;
}

.missing-caption{
  margin-bottom:10px;
}

.missing-reveal-word{
  color:var(--accent);

  font-family:
    "Kaisei Decol",
    "Zen Old Mincho",
    serif;

  font-size:clamp(58px,13vw,104px);
  font-weight:400;
  letter-spacing:.12em;
  line-height:1.2;

  filter:blur(5px);
  transform:scale(.98);

  transition:
    filter 1.3s ease,
    transform 1.3s ease;
}

.missing-reveal.show
.missing-reveal-word{
  filter:blur(0);
  transform:scale(1);
}


/* -------------------------
   RESULT
------------------------- */

#result{
  display:none;
  margin-top:28px;
}

#result.visible{
  display:block;

  animation:
    resultAppear 1.1s ease both;
}

@keyframes resultAppear{
  from{
    opacity:0;
    transform:translateY(12px);
  }

  to{
    opacity:1;
    transform:none;
  }
}

.result-label,
.section-title{
  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:10px;
  letter-spacing:.22em;
}

.missing-word{
  margin:16px 0 11px;

  color:var(--accent);

  font-family:
    "Kaisei Decol",
    "Zen Old Mincho",
    serif;

  font-size:clamp(51px,11vw,94px);
  font-weight:400;
  letter-spacing:.12em;
  line-height:1.2;
}

.not-found{
  margin-bottom:43px;
  color:var(--sub);
  font-size:13px;
}

.reading{
  margin:0 0 39px;
  font-size:17px;
  line-height:2;
}

.section{
  margin:36px 0;
  padding-top:22px;
  border-top:1px solid var(--line);
}

.section-title{
  margin-bottom:11px;
}

.sting{
  font-family:
    "Zen Old Mincho",
    "Noto Serif JP",
    serif;

  font-size:19px;
  line-height:1.95;
}

.question{
  font-family:
    "Zen Old Mincho",
    "Noto Serif JP",
    serif;

  font-size:22px;
  line-height:1.8;
}

.after{
  margin-top:31px;

  color:var(--sub);

  font-size:13px;
  line-height:1.9;
}


/* -------------------------
   ACTIONS / SHARE
------------------------- */

.actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;

  margin-top:38px;
}

.actions button{
  margin:0;
}

#share{
  background:var(--ink);
  color:var(--paper);
}

#share:hover{
  background:var(--accent);
  border-color:var(--accent);
}

.share-note{
  margin-top:12px;

  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:10px;
}


/* -------------------------
   CRISIS
------------------------- */

.crisis{
  padding:25px;

  border:1px solid var(--line);

  background:rgba(250,248,242,.72);
}

.crisis p{
  margin-bottom:23px;
}


/* -------------------------
   FOOTER
------------------------- */

footer{
  margin-top:91px;
  padding-top:26px;

  border-top:1px solid var(--line);

  color:var(--sub);

  font-family:
    system-ui,
    sans-serif;

  font-size:10px;
  line-height:1.85;
}

.footer-phrase{
  margin-top:20px;
  letter-spacing:.09em;
}


/* -------------------------
   MOBILE
------------------------- */

@media(max-width:520px){

  main{
    width:min(100% - 30px,720px);
    padding-top:42px;
  }

  .intro{
    margin-bottom:43px;
  }

  .actions{
    display:grid;
    grid-template-columns:1fr;
  }

  .actions button{
    width:100%;
  }

  .ghost-text{
    font-size:16px;
  }
}


/* -------------------------
   REDUCED MOTION
------------------------- */

@media(prefers-reduced-motion:reduce){

  *,
  *::before,
  *::after{
    scroll-behavior:auto !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }

  .ghost-text.fade{
    filter:none;
  }

  .missing-reveal-word{
    filter:none;
  }
}

.back-portal{display:inline-block;margin-top:26px;padding:9px 18px;
  border:1px solid var(--line,#c9c3b8);border-radius:2px;
  font-size:12px;letter-spacing:.08em;text-decoration:none;
  color:inherit;opacity:.72;transition:opacity .3s ease,background .3s ease;}
.back-portal:hover,.back-portal:focus-visible{opacity:1;background:rgba(0,0,0,.04);}

/* 足元のコピーライト。ページごとの控えめな色に合わせる（薄くしすぎない） */
.copyright{color:var(--sub);}