:root {
  --cream: #f7f2e8;
  --paper: #fcf9f3;
  --ink: #211e19;
  --mustard: #c08a2d;
  --mustard-soft: #efe2c4;
  --white: #ffffff;
  --gray: #8a857c;
  --line: #e3dccd;
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: 0.03em;
}

.page {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; }

/* ---------- 表紙 ---------- */
.cover {
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--line);
}
.cover__brand {
  margin: 0 0 56px;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.12em;
}
.cover__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: 30px;
  line-height: 1.6;
  letter-spacing: 0.06em;
}
.cover__lead {
  margin: 20px 0 0;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.8;
  color: var(--mustard);
}
.cover__hello {
  margin: 40px 0 0;
  font-size: 14px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 14px;
}
.cover__hello p { margin: 0; }
.cover__icon {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}
.cover__map {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.cover__map li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.cover__map span {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mustard);
  min-width: 52px;
}

/* ---------- STEP ---------- */
.step {
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 16px;
}
.step__no {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mustard);
}
.step__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.6;
  letter-spacing: 0.06em;
}
.step__sub {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--gray);
}
.step__guide {
  margin: 32px 0 12px;
  font-size: 13px;
  color: var(--gray);
}

/* チェック */
.checks { display: grid; gap: 10px; }
.check {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 16px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  line-height: 1.7;
  text-align: left;
  cursor: pointer;
  transition: border-color .2s, background-color .2s;
  -webkit-tap-highlight-color: transparent;
}
.check__mark {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 1px solid var(--gray);
  border-radius: 50%;
  position: relative;
  transition: background-color .2s, border-color .2s;
}
.check[aria-pressed="true"] {
  border-color: var(--mustard);
  background: var(--mustard-soft);
}
.check[aria-pressed="true"] .check__mark {
  background: var(--mustard);
  border-color: var(--mustard);
}
.check[aria-pressed="true"] .check__mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 3px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}
.check:focus-visible, .btn:focus-visible, .q__input:focus-visible {
  outline: 2px solid var(--mustard);
  outline-offset: 2px;
}

/* ボタン */
.btn {
  display: block;
  width: 100%;
  margin-top: 28px;
  padding: 16px;
  background: var(--ink);
  color: var(--cream);
  border: 1px solid var(--ink);
  border-radius: 999px;
  font: inherit;
  font-size: 15px;
  letter-spacing: 0.1em;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
}
.btn--copy {
  margin-top: 14px;
  padding: 11px;
  font-size: 13px;
  background: transparent;
  color: var(--ink);
}

/* 結果 */
.result {
  margin-top: 40px;
  padding: 32px 22px;
  background: var(--paper);
  border-radius: 16px;
  scroll-margin-top: 16px;
}
.result[hidden] { display: none; }
.result__kicker {
  margin: 0;
  font-size: 12px;
  color: var(--gray);
}
.result__title {
  margin: 4px 0 24px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.6;
  color: var(--ink);
}
.result__title--sm { font-size: 18px; }
.result__count {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--gray);
}
.result__num {
  font-size: 40px;
  color: var(--mustard);
  line-height: 1.2;
}
.result__dl { margin: 0; }
.result__dl dt {
  margin-top: 16px;
  font-size: 12px;
  color: var(--mustard);
  letter-spacing: 0.08em;
}
.result__dl dt:first-child { margin-top: 0; }
.result__dl dd { margin: 2px 0 0; }
.result__sub {
  margin: 32px 0 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-size: 15px;
}
.result__sub:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.result__todo, .result__fixes {
  margin: 0;
  padding-left: 1.4em;
  font-size: 14px;
}
.result__todo li, .result__fixes li { margin-bottom: 10px; }
.result__fixes li::marker { color: var(--mustard); }
.result__bridge {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-left: 2px solid var(--mustard);
  font-size: 14px;
}
.result__warn { margin: 0; font-size: 14px; color: var(--gray); }

/* 質問 */
.qs { margin-top: 36px; }
.q {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}
.q--pre { border-top: 0; padding-top: 0; }
.q__label {
  display: block;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
}
.q__no {
  display: block;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mustard);
}
.q__opt {
  margin-left: 10px;
  font-size: 12px;
  color: var(--gray);
}
.q__mini {
  display: block;
  margin: 14px 0 6px;
  font-size: 12px;
  color: var(--gray);
}
.q__hint {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  font-size: 12px;
  color: var(--gray);
  line-height: 1.8;
}
.q__note { color: var(--mustard); }
.q__input {
  display: block;
  width: 100%;
  padding: 13px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
}
.q__input::placeholder { color: #b9b3a7; }

.choices { display: grid; gap: 8px; }
.choice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
}
.choice input { accent-color: var(--mustard); margin: 0; width: 16px; height: 16px; }
.choice:has(input:checked) { border-color: var(--mustard); background: var(--mustard-soft); }

/* 下書き */
.draft {
  margin-bottom: 16px;
  padding: 18px 16px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.draft__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}
.draft__title {
  margin: 0;
  font-size: 12px;
  color: var(--gray);
}
.draft__count {
  font-size: 12px;
  color: var(--gray);
  white-space: nowrap;
}
.draft__count.is-over { color: var(--mustard); font-weight: 500; }
.draft__text {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-word;
}
.draft__over {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--mustard);
}
.draft__hint {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--gray);
}
.linenote {
  margin: 28px 0 0;
  padding: 16px 18px;
  background: var(--mustard-soft);
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.8;
}

/* おまけ */
.step--extra #gpt-box { margin-top: 28px; }
.step--extra .draft { background: var(--paper); }

/* page.の紹介 */
.about {
  padding: 64px 0 56px;
  text-align: center;
}
.about__photo {
  display: block;
  width: 96px;
  height: 96px;
  margin: 0 auto 18px;
  border-radius: 50%;
  object-fit: cover;
  object-position: 50% 30%;
}
.about__name {
  margin: 0;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.1em;
}
.about__text {
  margin: 10px auto 0;
  max-width: 300px;
  font-size: 13px;
  color: var(--gray);
}
.about__line {
  display: inline-block;
  margin-top: 24px;
  font-size: 13px;
  text-underline-offset: 4px;
  text-decoration-color: var(--mustard);
}
.about__copy {
  margin: 48px 0 0;
  font-family: var(--serif);
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.12em;
}

@media (min-width: 600px) {
  .cover { padding-top: 96px; }
  .cover__title { font-size: 34px; }
}

/* ChatGPTの使い方 */
.howto {
  margin: 0 0 20px;
  padding-left: 1.4em;
  font-size: 14px;
  line-height: 1.8;
}
.howto li + li { margin-top: 4px; }
#s3-result .btn--ghost {
  display: block;
  text-align: center;
  text-decoration: none;
  margin-top: 12px;
}

/* ================= チャット版 ================= */

[hidden] { display: none !important; }

.cover { border-bottom: 0; }
.btn--start {
  margin-top: 44px;
  padding: 18px;
  font-size: 16px;
  letter-spacing: 0.2em;
}

/* 進み具合 */
.bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background: rgba(247, 242, 232, 0.94);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.bar__in {
  max-width: 480px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.bar__step {
  margin: 0;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mustard);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.bar__name { margin-left: 10px; color: var(--ink); }
@media (max-width: 419px) { .bar__name { display: none; } }
.bar__acts { display: flex; gap: 6px; flex: none; }
.bar__btn {
  padding: 5px 11px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--gray);
  font: inherit;
  font-size: 11px;
  letter-spacing: 0.04em;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.bar__btn:disabled { opacity: 0.4; cursor: default; }
.bar__btn:focus-visible, .chip:focus-visible, .choice:focus-within {
  outline: 2px solid var(--mustard);
  outline-offset: 2px;
}

/* チャット */
.chat { padding: 72px 0 40px; }
.chat__log { display: flex; flex-direction: column; }

.msg {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin-top: 18px;
  scroll-margin-top: 64px;
  scroll-margin-bottom: 24px;
}
.msg--cont { margin-top: 6px; }
.msg__icon, .msg__space {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  align-self: flex-start;
}
.bubble {
  margin: 0;
  max-width: calc(100% - 64px);
  padding: 11px 15px;
  background: var(--white);
  border-radius: 4px 18px 18px 18px;
  font-size: 14px;
  line-height: 1.75;
  box-shadow: 0 1px 2px rgba(33, 30, 25, 0.04);
}
.msg--cont .bubble { border-radius: 18px; }
.msg--user { justify-content: flex-end; }
.bubble--user {
  max-width: 75%;
  background: var(--mustard-soft);
  border-radius: 18px 4px 18px 18px;
  box-shadow: none;
}
.msg + .msg--user { margin-top: 14px; }

/* 入力中 */
.bubble--typing {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  padding: 15px 16px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gray);
  opacity: 0.35;
  animation: dot 1s infinite ease-in-out;
}
.dot:nth-child(2) { animation-delay: .15s; }
.dot:nth-child(3) { animation-delay: .3s; }
@keyframes dot {
  0%, 60%, 100% { opacity: 0.35; transform: translateY(0); }
  30% { opacity: 0.9; transform: translateY(-2px); }
}

/* 吹き出しがふわっと出る */
.msg { animation: rise .28s ease-out both; }
@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* 結果カード */
.msg--card { align-items: flex-start; }
.card {
  flex: 1 1 auto;
  min-width: 0;
  padding: 24px 20px;
  background: var(--white);
  border-radius: 4px 18px 18px 18px;
  font-size: 14px;
  box-shadow: 0 1px 2px rgba(33, 30, 25, 0.04);
}
.msg--cont .card { border-radius: 18px; }
.card .result__title { margin-bottom: 18px; font-size: 20px; }
.card .result__title--sm { font-size: 17px; }
.card .result__sub { margin-top: 24px; }
.card .result__bridge {
  margin-top: 22px;
  padding: 12px 14px;
  background: var(--cream);
  border-left: 2px solid var(--mustard);
  border-radius: 0 8px 8px 0;
  font-size: 13px;
}

/* 答えのチップ */
.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
  scroll-margin-bottom: 24px;
}
.chips:empty { display: none; }
.chip {
  min-width: 88px;
  padding: 9px 20px;
  background: var(--white);
  border: 1px solid var(--mustard);
  border-radius: 999px;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.06em;
  cursor: pointer;
  animation: rise .28s ease-out both;
  -webkit-tap-highlight-color: transparent;
  transition: background-color .15s;
}
.chip:hover, .chip:active { background: var(--mustard-soft); }

/* STEP3 フォーム */
.s3 { margin-top: 18px; scroll-margin-top: 64px; }
.s3.is-in { animation: rise .35s ease-out both; }
.s3__card {
  padding: 28px 20px 24px;
  background: var(--white);
  border-radius: 18px;
  box-shadow: 0 1px 2px rgba(33, 30, 25, 0.04);
}
.s3__no {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mustard);
}
.s3__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.6;
  letter-spacing: 0.05em;
}
.s3__sub {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--gray);
}
.s3 .qs { margin-top: 24px; }
.s3 .q__input, .s3 .choice { background: var(--cream); border-color: transparent; }
.s3 .q__input:focus { border-color: var(--mustard); outline: none; }
.s3 .choice { border-radius: 999px; padding: 10px 16px; }
.s3 .choice:has(input:checked) { background: var(--mustard-soft); border-color: var(--mustard); }
.s3 .btn { margin-top: 12px; }
.s3 .result { margin-top: 18px; background: var(--white); border-radius: 18px; scroll-margin-top: 64px; }
.s3 .draft { background: var(--cream); border-color: transparent; }

.about { margin-top: 24px; border-top: 1px solid var(--line); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .msg, .chip, .s3.is-in { animation: none; }
  .dot { animation: none; opacity: 0.6; }
}