/* デグチ — 意匠は「測量図・地籍図」から取る。
   AI生成が寄りがちなクリーム+テラコッタ／黒+アシッド／新聞レイアウトは使わない。
   署名要素は1つだけ：全面に敷いた方眼と、朱の実測線。 */

:root {
  --paper:      #f7f5f0;
  --paper-2:    #fffefb;
  --ink:        #1c1c1a;
  --ink-2:      #4a4a45;
  --ink-3:      #86867e;
  --rule:       #d8d4c8;
  --grid:       #e6e2d6;
  --vermilion:  #a8332a;   /* 測量の朱。ここぞの1箇所にだけ */
  --indigo:     #2b4562;
  --moss:       #4a6b47;
  --radius:     3px;       /* 図面なので角は立てる */
  --wrap:       1080px;
  --shadow:     0 1px 0 var(--rule);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:   #14140f;
    --paper-2: #1b1b16;
    --ink:     #ece9df;
    --ink-2:   #b8b4a8;
    --ink-3:   #7e7a70;
    --rule:    #35342c;
    --grid:    #24231d;
    --vermilion: #d2564a;
    --indigo:  #7fa6cf;
    --moss:    #8fb389;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
  background: var(--paper);
  letter-spacing: .02em;
  overflow-x: hidden;
}

/* ── 方眼。この事業の署名 ── */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
  opacity: .85;
}

main, header, footer { position: relative; z-index: 1; }

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
.wrap-narrow { width: min(100% - 2.5rem, 640px); }

/* ── ヘッダー ── */
.site-header {
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
.site-header .wrap {
  display: flex; align-items: center; gap: 1.25rem;
  padding: .85rem 0; flex-wrap: wrap;
}
.logo { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); }
.logo-mark { color: var(--vermilion); display: block; }
.logo-text {
  font-family: "Noto Serif JP", serif; font-weight: 700;
  font-size: 1.32rem; letter-spacing: .22em;
}
.tagline { margin: 0; font-size: .82rem; color: var(--ink-3); letter-spacing: .06em; }

/* ── ヒーロー ── */
.hero { padding: 5rem 0 3.5rem; }
.eyebrow {
  margin: 0 0 1.4rem; font-size: .76rem; letter-spacing: .28em;
  color: var(--vermilion); font-weight: 700;
  display: inline-flex; align-items: center; gap: .8rem;
}
.eyebrow::before {
  content: ""; width: 42px; height: 1px; background: var(--vermilion);
}
h1 {
  font-family: "Noto Serif JP", serif;
  font-size: clamp(1.85rem, 5.2vw, 3.1rem);
  line-height: 1.55; font-weight: 700; margin: 0 0 1.8rem;
  letter-spacing: .01em;
}
h1 em {
  font-style: normal; position: relative; display: inline-block;
}
h1 em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .12em;
  height: 2px; background: var(--vermilion); opacity: .9;
}
.lede {
  font-size: 1.02rem; color: var(--ink-2); margin: 0 0 2.5rem;
  max-width: 34em; /* 日本語は ch だと詰まりすぎる */
  text-wrap: pretty;
}

.problem-card {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--vermilion);
  background: var(--paper-2);
  padding: 1.6rem 1.8rem; margin: 0 0 2.5rem; max-width: 60ch;
  border-radius: var(--radius);
}
.problem-card h2 {
  font-family: "Noto Serif JP", serif; font-size: 1.12rem;
  margin: 0 0 .9rem; line-height: 1.7;
}
.problem-card p { margin: 0 0 .8rem; font-size: .94rem; color: var(--ink-2); }
.problem-card p:last-child { margin-bottom: 0; }
.problem-card strong { color: var(--ink); font-weight: 700; }

/* ── ボタン ── */
.cta-main {
  display: inline-flex; flex-direction: column; align-items: center; gap: .25rem;
  font-family: inherit; font-size: 1.05rem; font-weight: 700;
  color: var(--paper-2); background: var(--ink);
  border: none; border-radius: var(--radius);
  padding: 1.05rem 3rem; cursor: pointer;
  letter-spacing: .08em; transition: transform .16s ease, background .16s ease;
}
.cta-main:hover { background: var(--vermilion); transform: translateY(-1px); }
.cta-main:active { transform: translateY(0); }
.cta-main:focus-visible { outline: 2px solid var(--vermilion); outline-offset: 3px; }
.cta-sub { font-size: .72rem; font-weight: 400; opacity: .8; letter-spacing: .1em; }

.micro-note { font-size: .78rem; color: var(--ink-3); margin: .9rem 0 0; }

/* ── 4つの出口 ── */
.exits-intro { padding: 3.5rem 0 5rem; border-top: 1px solid var(--rule); }
.section-title {
  font-family: "Noto Serif JP", serif; font-size: 1.4rem;
  margin: 0 0 2rem; letter-spacing: .14em;
}
.exit-grid {
  display: grid; gap: 1px; background: var(--rule);
  border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.exit-card { background: var(--paper-2); padding: 1.6rem 1.4rem; margin: 0; }
.exit-num {
  font-family: "Noto Serif JP", serif; font-size: .78rem;
  color: var(--vermilion); letter-spacing: .18em; display: block; margin-bottom: .6rem;
}
.exit-card h3 {
  font-family: "Noto Serif JP", serif; font-size: 1.28rem;
  margin: 0 0 .7rem; letter-spacing: .1em;
}
.exit-card p { margin: 0; font-size: .86rem; color: var(--ink-2); line-height: 1.85; }

/* ── フォーム ── */
.form-section { padding: 3rem 0 5rem; border-top: 1px solid var(--rule); }
.form-progress {
  height: 2px; background: var(--rule); margin-bottom: 2.5rem; border-radius: 2px; overflow: hidden;
}
#progress-bar {
  display: block; height: 100%; width: 0%; background: var(--vermilion);
  transition: width .35s cubic-bezier(.4,0,.2,1);
}
.q { border: none; padding: 0; margin: 0 0 2.8rem; }
.q legend {
  font-family: "Noto Serif JP", serif; font-size: 1.08rem; font-weight: 700;
  margin-bottom: 1rem; padding: 0; display: flex; align-items: baseline; gap: .7rem;
  line-height: 1.7;
}
.q-num {
  font-size: .74rem; letter-spacing: .16em; color: var(--vermilion);
  border: 1px solid currentColor; padding: .1rem .45rem; border-radius: 2px; flex-shrink: 0;
}
.q-note { font-size: .8rem; color: var(--ink-3); margin: .8rem 0 0; line-height: 1.8; }

.choices { display: grid; gap: .55rem; }
.choices label {
  display: flex; align-items: center; gap: .8rem;
  border: 1px solid var(--rule); background: var(--paper-2);
  padding: .9rem 1.1rem; border-radius: var(--radius); cursor: pointer;
  transition: border-color .14s, background .14s;
  font-size: .94rem;
}
.choices label:hover { border-color: var(--ink-3); }
.choices input { accent-color: var(--vermilion); width: 1.05rem; height: 1.05rem; flex-shrink: 0; }
.choices label:has(input:checked) {
  border-color: var(--vermilion); background: color-mix(in srgb, var(--vermilion) 6%, var(--paper-2));
}

select, input[type="number"] {
  font-family: inherit; font-size: 1rem; color: var(--ink);
  background: var(--paper-2); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: .85rem 1rem; width: 100%;
}
select:focus, input:focus { outline: 2px solid var(--vermilion); outline-offset: 1px; }
.input-unit { display: flex; align-items: center; gap: .6rem; }
.input-unit .unit { color: var(--ink-3); font-size: .9rem; flex-shrink: 0; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ── 結果 ── */
.result-section { padding: 3rem 0 5rem; border-top: 1px solid var(--rule); }

.result-head { margin-bottom: 2.5rem; }
.result-head h2 {
  font-family: "Noto Serif JP", serif; font-size: clamp(1.5rem, 4vw, 2.1rem);
  margin: 0 0 .8rem; line-height: 1.6;
}
.result-head p { color: var(--ink-2); font-size: .95rem; margin: 0; }

.rank-list { display: grid; gap: 1.25rem; margin-bottom: 3rem; }
.rank-card {
  border: 1px solid var(--rule); background: var(--paper-2);
  border-radius: var(--radius); overflow: hidden;
}
.rank-card.is-top { border-color: var(--vermilion); border-width: 2px; }
.rank-card-head {
  display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap;
  padding: 1.3rem 1.5rem .9rem;
  border-bottom: 1px dashed var(--rule);
}
.rank-badge {
  font-family: "Noto Serif JP", serif; font-size: .74rem; letter-spacing: .16em;
  color: var(--ink-3); border: 1px solid var(--rule); padding: .15rem .5rem; border-radius: 2px;
}
.rank-card.is-top .rank-badge { color: var(--vermilion); border-color: var(--vermilion); }
.rank-card-head h3 {
  font-family: "Noto Serif JP", serif; font-size: 1.35rem; margin: 0; letter-spacing: .06em;
}
.rank-figure {
  margin-left: auto; font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}
.rank-figure.is-negative { color: var(--vermilion); }
.rank-figure small { font-size: .72rem; font-weight: 400; color: var(--ink-3); display: block; text-align: right; letter-spacing: .06em; }

.rank-body { padding: 1.2rem 1.5rem 1.5rem; }
.figure-range {
  display: flex; gap: 1.5rem; flex-wrap: wrap;
  font-size: .82rem; color: var(--ink-2); margin: 0 0 1.1rem;
  font-variant-numeric: tabular-nums;
}
.figure-range span b { font-weight: 700; color: var(--ink); }

.conflict-note {
  border: 1px solid var(--vermilion);
  background: color-mix(in srgb, var(--vermilion) 5%, var(--paper-2));
  border-radius: var(--radius); padding: 1.3rem 1.5rem; margin-bottom: 2.5rem;
}
.conflict-note p { margin: 0 0 .7rem; font-size: .9rem; color: var(--ink-2); line-height: 1.85; }
.conflict-note p:last-child { margin-bottom: 0; }
.conflict-note strong { color: var(--ink); }

.fit-reason {
  font-size: .88rem; color: var(--ink); margin: 0 0 1.1rem;
  padding: .7rem 1rem; background: color-mix(in srgb, var(--indigo) 7%, transparent);
  border-radius: var(--radius); line-height: 1.8;
}

.meta-row { display: flex; gap: 1.6rem; flex-wrap: wrap; font-size: .84rem; color: var(--ink-2); margin-bottom: 1.1rem; }
.meta-row b { font-variant-numeric: tabular-nums; color: var(--ink); }

.risk-list { margin: 0 0 1.1rem; padding-left: 1.1rem; }
.risk-list li { font-size: .84rem; color: var(--ink-2); margin-bottom: .45rem; line-height: 1.8; }
.exit-note {
  font-size: .86rem; color: var(--ink-2); margin: 0;
  border-left: 2px solid var(--rule); padding-left: .9rem;
}

/* 折れ線グラフ */
.chart { width: 100%; height: auto; display: block; margin: 1.2rem 0; }
.chart .axis { stroke: var(--rule); stroke-width: 1; }
.chart .zero { stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .line { fill: none; stroke: var(--indigo); stroke-width: 2; }
.chart .line.is-top { stroke: var(--vermilion); }
.chart .label { font-size: 10px; fill: var(--ink-3); }

/* 前提の開示 */
.assumptions {
  border: 1px solid var(--rule); background: var(--paper-2);
  border-radius: var(--radius); padding: 1.4rem 1.6rem; margin-bottom: 2rem;
}
.assumptions h3 { font-family: "Noto Serif JP", serif; font-size: 1.05rem; margin: 0 0 1rem; }
.assumptions dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .5rem 1.4rem; font-size: .85rem; }
.assumptions dt { color: var(--ink-3); }
.assumptions dd { margin: 0; color: var(--ink-2); }
.assumptions dd em { font-style: normal; display: block; font-size: .78rem; color: var(--ink-3); margin-top: .15rem; }

/* 案件（PR）ブロック */
.offer-block {
  border: 1px solid var(--rule); border-top: 3px solid var(--indigo);
  background: var(--paper-2); border-radius: var(--radius);
  padding: 1.5rem 1.6rem; margin: 2rem 0;
}
.offer-block .pr-tag {
  display: inline-block; font-size: .68rem; letter-spacing: .16em; font-weight: 700;
  color: var(--paper-2); background: var(--ink-3);
  padding: .12rem .5rem; border-radius: 2px; margin-bottom: .9rem;
}
.offer-block h3 { font-family: "Noto Serif JP", serif; font-size: 1.1rem; margin: 0 0 .7rem; }
.offer-block p { font-size: .88rem; color: var(--ink-2); margin: 0 0 1rem; }
.offer-none {
  font-size: .88rem; color: var(--ink-2);
  border: 1px dashed var(--rule); border-radius: var(--radius);
  padding: 1.2rem 1.4rem; margin: 2rem 0;
}

.disclaimer {
  font-size: .8rem; color: var(--ink-3); line-height: 1.9;
  border-top: 1px solid var(--rule); padding-top: 1.4rem; margin-top: 2.5rem;
}

.result-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin: 2rem 0; }
.btn-sub {
  font-family: inherit; font-size: .88rem; color: var(--ink);
  background: transparent; border: 1px solid var(--rule);
  border-radius: var(--radius); padding: .75rem 1.5rem; cursor: pointer;
  transition: border-color .14s;
}
.btn-sub:hover { border-color: var(--ink-3); }

/* ── フッター ── */
.site-footer {
  border-top: 1px solid var(--rule); padding: 3rem 0 4rem;
  background: var(--paper-2); margin-top: 4rem;
}
.footer-nav { display: flex; gap: 1.6rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.footer-nav a { color: var(--ink-2); font-size: .86rem; text-decoration: none; border-bottom: 1px solid transparent; }
.footer-nav a:hover { border-bottom-color: var(--ink-3); }
.footer-pr, .footer-legal {
  font-size: .8rem; color: var(--ink-3); line-height: 1.9; margin: 0 0 1rem; max-width: 72ch;
}
.footer-pr strong { color: var(--ink-2); }
.footer-pr a { color: var(--ink-2); }
.copyright { font-size: .76rem; color: var(--ink-3); margin: 1.5rem 0 0; letter-spacing: .1em; }

@media (max-width: 640px) {
  .hero { padding: 3rem 0 2.5rem; }
  .rank-figure { margin-left: 0; width: 100%; }
  .rank-figure small { text-align: left; }
  .row { grid-template-columns: 1fr; }
  .assumptions dl { grid-template-columns: 1fr; gap: .15rem; }
  .assumptions dt { margin-top: .6rem; }
}

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