:root {
  --paper: #cfc9c0;
  --paper-2: #e4dfd6;
  --cream: #f4efe6;
  --ink: #141414;
  --muted: #5a564f;
  --red: #e30613;
  --red-d: #b70510;
  --yellow: #ffd000;
  --line: rgba(20, 20, 20, 0.12);
  --shadow: 0 18px 50px rgba(20, 20, 20, 0.12);
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --display: "Anton", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { min-height: 100%; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
}
button, input, textarea, select {
  font-family: inherit;
  color: inherit;
}
button { cursor: pointer; border: 0; background: none; }
a { color: inherit; }
[hidden] { display: none !important; }

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.09;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.85'/%3E%3C/svg%3E");
}

/* COVER */
.cover {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(280px, 42vw) 1fr;
  background: var(--paper);
}
.cover-red {
  background: var(--red);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 8vh 4vw 6vh;
}
.cover-en {
  position: absolute;
  top: 28px;
  left: 28px;
  color: var(--yellow);
  font-family: var(--display);
  letter-spacing: 0.16em;
  font-size: 13px;
}
.jumper {
  width: min(72%, 340px);
  height: auto;
  animation: float 4.6s ease-in-out infinite;
  filter: drop-shadow(0 18px 0 rgba(0,0,0,.12));
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-14px) rotate(2deg); }
}
.cover-type {
  padding: 8vh 7vw 8vh 5vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.cover-author {
  font-size: 13px;
  letter-spacing: 0.42em;
  color: var(--muted);
  margin-bottom: 28px;
}
.cover-type h1 {
  font-size: clamp(42px, 6vw, 86px);
  font-weight: 900;
  letter-spacing: 0.18em;
  line-height: 1.05;
  writing-mode: vertical-rl;
  height: min(46vh, 480px);
  margin-bottom: 22px;
}
.cover-sub {
  font-size: clamp(20px, 2.4vw, 32px);
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 22px;
}
.cover-line {
  font-family: var(--serif);
  font-size: 18px;
  max-width: 28ch;
  margin-bottom: 32px;
}
.enter {
  align-self: flex-start;
  background: var(--ink);
  color: var(--yellow);
  padding: 14px 28px;
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 14px;
  transition: transform .15s ease, background .15s ease;
}
.enter:hover { background: var(--red); color: var(--yellow); transform: translateY(-2px); }
.cover-note {
  margin-top: 18px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* APP CHROME */
.app { min-height: 100dvh; display: flex; flex-direction: column; }
.top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 22px;
  height: 58px;
  background: var(--ink);
  color: var(--cream);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--yellow);
  font-weight: 900;
  letter-spacing: 0.14em;
  font-size: 14px;
}
.brand-mark {
  width: 16px;
  height: 22px;
  background: var(--red);
  display: inline-block;
  box-shadow: 4px 4px 0 var(--yellow);
}
.parts {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
}
.parts button {
  color: rgba(244,239,230,.72);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 12px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.parts button:hover, .parts button.active {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}
.top-right { display: flex; align-items: center; gap: 12px; }
.progress { font-size: 12px; color: rgba(244,239,230,.55); font-variant-numeric: tabular-nums; }
.map-btn {
  background: var(--red);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 7px 12px;
}

.shell {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: calc(100dvh - 58px);
}
.rail {
  background: var(--paper-2);
  border-right: 1px solid var(--line);
  padding: 18px 0 40px;
  overflow-y: auto;
  max-height: calc(100dvh - 58px);
  position: sticky;
  top: 58px;
}
.rail-group { margin-bottom: 18px; }
.rail-label {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  padding: 8px 18px 6px;
  font-weight: 700;
}
.rail a, .rail button.rail-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 7px 18px;
  font-size: 13px;
  color: var(--ink);
  border-left: 3px solid transparent;
}
.rail a:hover, .rail button.rail-item:hover { background: rgba(227,6,19,.06); }
.rail a.active, .rail button.rail-item.active {
  border-left-color: var(--red);
  background: var(--cream);
  font-weight: 700;
}
.rail .done::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 8px;
  background: var(--red);
  border-radius: 50%;
  vertical-align: middle;
}

.main {
  padding: 36px 48px 80px;
  max-width: 980px;
}

/* MAP */
.map-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  margin-bottom: 36px;
  align-items: end;
}
.stat {
  background: var(--red);
  color: var(--yellow);
  padding: 28px 32px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.stat b {
  font-family: var(--display);
  font-size: clamp(72px, 10vw, 128px);
  line-height: 0.8;
  font-weight: 400;
  display: block;
}
.stat span {
  display: block;
  margin-top: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 16px;
  max-width: 18ch;
}
.map-lead h2 {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.map-lead p { font-family: var(--serif); font-size: 16px; max-width: 42ch; }
.myths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 22px 0 36px;
}
.myth {
  background: var(--cream);
  padding: 16px 18px;
  border-left: 4px solid var(--ink);
}
.myth em { display: block; font-style: normal; color: var(--muted); font-size: 12px; letter-spacing: 0.12em; margin-bottom: 6px; font-weight: 700; }
.myth strong { display: block; font-size: 15px; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}
.door {
  background: var(--cream);
  min-height: 240px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  text-align: left;
  transition: transform .15s ease, box-shadow .15s ease;
}
.door:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.door.work { background: var(--ink); color: var(--cream); }
.door.love { background: var(--red); color: var(--yellow); }
.door.body { background: var(--yellow); color: var(--ink); }
.door .k { font-size: 12px; letter-spacing: 0.2em; font-weight: 700; opacity: .7; }
.door h3 { font-size: 32px; font-weight: 900; letter-spacing: 0.12em; }
.door p { font-size: 14px; line-height: 1.55; }

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.card {
  background: var(--cream);
  padding: 20px 22px 18px;
  text-align: left;
  border: 1px solid transparent;
  min-height: 148px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--red); transform: translateY(-2px); }
.card .n {
  font-family: var(--display);
  color: var(--red);
  font-size: 28px;
  line-height: 1;
}
.card h3 { font-size: 18px; font-weight: 900; }
.card p { font-size: 13px; color: var(--muted); }
.section-h {
  margin: 36px 0 14px;
  font-size: 13px;
  letter-spacing: 0.28em;
  font-weight: 900;
  color: var(--red);
}

/* CHAPTER */
.ch-kicker {
  font-size: 12px;
  letter-spacing: 0.28em;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 10px;
}
.ch-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.2;
  margin-bottom: 8px;
}
.ch-thesis {
  font-family: var(--serif);
  font-size: 20px;
  max-width: 34ch;
  margin-bottom: 28px;
}
.quote {
  background: var(--ink);
  color: var(--yellow);
  padding: 22px 26px;
  margin: 0 0 28px;
  font-family: var(--serif);
  font-size: 18px;
}
.quote cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cream);
  opacity: .7;
}
.dossier {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
  background: var(--cream);
  margin-bottom: 22px;
  border: 1px solid var(--line);
}
.dossier .who {
  background: var(--red);
  color: var(--yellow);
  padding: 18px 20px;
}
.dossier .who b { display: block; font-size: 22px; font-weight: 900; }
.dossier .who span { font-size: 13px; opacity: .85; }
.dossier .what { padding: 18px 22px; font-family: var(--serif); font-size: 16px; }
.block { margin-bottom: 22px; }
.block h4 {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 8px;
}
.block p, .block li { font-size: 16px; }
.block ul { padding-left: 1.1em; }
.block li { margin: 6px 0; }
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 22px 0;
}
.trap, .truth {
  padding: 18px 20px;
  min-height: 120px;
}
.trap { background: var(--ink); color: var(--cream); }
.truth { background: var(--yellow); color: var(--ink); }
.trap h4, .truth h4 {
  font-size: 11px;
  letter-spacing: 0.18em;
  margin-bottom: 8px;
  opacity: .7;
}
.monday {
  background: var(--cream);
  padding: 22px 24px;
  border-left: 6px solid var(--red);
  margin: 28px 0 18px;
}
.monday h4 { font-size: 13px; letter-spacing: 0.16em; margin-bottom: 10px; }
.monday li { margin: 6px 0; }
.ask {
  font-family: var(--serif);
  font-size: 18px;
  padding: 8px 0 0;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}
.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 36px;
}
.pager button {
  background: var(--ink);
  color: var(--cream);
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.pager button:hover { background: var(--red); color: var(--yellow); }
.pager button[disabled] { opacity: .35; cursor: default; }

/* TOOLS */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 28px;
}
.tool-card {
  background: var(--cream);
  padding: 22px;
  text-align: left;
  min-height: 140px;
  border: 1px solid var(--line);
}
.tool-card:hover { border-color: var(--red); }
.tool-card h3 { font-size: 20px; font-weight: 900; margin-bottom: 8px; }
.tool-card p { font-size: 14px; color: var(--muted); }
.field { margin: 12px 0; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  background: var(--cream);
  border: 1px solid var(--line);
  padding: 10px 12px;
  font-size: 15px;
}
.field textarea { min-height: 88px; resize: vertical; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.chip {
  background: var(--ink);
  color: var(--yellow);
  padding: 6px 10px;
  font-size: 13px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.chip button { color: var(--cream); font-size: 14px; }
.jam-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.jam {
  background: var(--cream);
  padding: 16px;
  min-height: 140px;
  border: 1px dashed var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.jam-n { font-size: 12px; font-weight: 900; letter-spacing: 0.16em; }
.jam textarea {
  width: 100%;
  min-height: 72px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 8px 10px;
  font-size: 14px;
  resize: vertical;
}
.jam.active { border: 3px solid var(--red); background: var(--yellow); }
.q-list { display: grid; gap: 10px; }
.q-item {
  background: var(--cream);
  padding: 14px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}
.q-item input { margin-top: 4px; accent-color: var(--red); width: 16px; height: 16px; }
.save-hint { font-size: 12px; color: var(--muted); margin-top: 8px; }
.primary {
  background: var(--red);
  color: #fff;
  padding: 10px 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 13px;
}

@media (max-width: 920px) {
  .cover { grid-template-columns: 1fr; min-height: 100dvh; }
  .cover-red { min-height: 34vh; padding: 5vh 5vw 3vh; }
  .jumper { width: min(52%, 200px); }
  .cover-type { padding: 4vh 8vw 5vh; }
  .cover-author { margin-bottom: 14px; }
  .cover-type h1 {
    writing-mode: horizontal-tb;
    height: auto;
    letter-spacing: 0.12em;
    font-size: 36px;
    margin-bottom: 12px;
  }
  .cover-sub { font-size: 22px; margin-bottom: 14px; }
  .cover-line { font-size: 16px; margin-bottom: 20px; }
  .shell { grid-template-columns: 1fr; }
  .rail {
    position: static;
    max-height: none;
    display: none;
  }
  .main { padding: 24px 18px 64px; }
  .map-hero, .grid-3, .cards, .split, .dossier, .myths, .tool-grid, .jam-grid {
    grid-template-columns: 1fr;
  }
  .top {
    display: grid;
    grid-template-columns: 1fr auto auto;
    grid-template-areas:
      "brand progress map"
      "parts parts parts";
    height: auto;
    padding: 8px 10px 0;
    gap: 4px 8px;
    align-items: center;
  }
  .brand { grid-area: brand; }
  .top-right { display: contents; }
  .progress { grid-area: progress; }
  .map-btn { grid-area: map; }
  .parts {
    grid-area: parts;
    width: 100%;
    padding-bottom: 6px;
  }
}