:root {
  --paper: #FAFAF7;
  --ink: #22302A;
  --verde: #2E7D5B;
  --verde-deep: #1E5C42;
  --marker: #F5C842;
  --rule: #D9E3DC;
  --gray: #71807A;
  --font-display: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  font-size: 15px;
  font-feature-settings: "palt";
}
a { color: var(--verde-deep); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--marker); outline-offset: 2px; }
img { max-width: 100%; display: block; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ===== マーカー強調（サイトの強調言語） ===== */
.mk {
  background: linear-gradient(transparent 62%, var(--marker) 62%, var(--marker) 94%, transparent 94%);
  font-weight: 700;
}

/* ===== ナビ ===== */
nav.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,247,.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--rule);
}
nav.top .wrap { display: flex; align-items: center; gap: 20px; height: 52px; }
nav.top .brand { font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .06em; color: var(--verde-deep); white-space: nowrap; }
nav.top ul { display: flex; gap: 4px; list-style: none; margin-left: auto; overflow-x: auto; }
nav.top a { text-decoration: none; font-size: 13px; font-weight: 500; color: var(--ink); padding: 6px 10px; border-radius: 4px; white-space: nowrap; }
nav.top a:hover { background: var(--rule); }

/* ===== ヒーロー ===== */
header.hero { position: relative; color: #fff; }
header.hero .photo {
  height: min(78vh, 640px);
  background: url("img/exterior_night.webp") center 30% / cover no-repeat;
  position: relative;
}
header.hero .photo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,32,26,.30) 0%, rgba(20,32,26,.05) 40%, rgba(20,32,26,.72) 100%);
}
header.hero .headline {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding-bottom: 40px;
}
.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .12em;
  background: var(--marker); color: var(--ink);
  padding: 4px 12px; margin-bottom: 18px;
}
header.hero h1 {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.28; letter-spacing: .02em;
  text-shadow: 0 2px 22px rgba(0,0,0,.45);
}
header.hero .sub {
  margin-top: 12px; font-size: clamp(13px, 1.8vw, 16px); font-weight: 500;
  text-shadow: 0 1px 12px rgba(0,0,0,.55);
}

/* ===== 図面表題欄（シグネチャ） ===== */
.titleblock {
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  display: grid;
  grid-template-columns: 1.4fr 1.6fr 1fr 1fr .9fr;
  margin-top: -1px;
}
.titleblock > div { padding: 10px 14px 12px; border-left: 1px solid var(--ink); min-width: 0; }
.titleblock > div:first-child { border-left: none; }
.titleblock .k {
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  letter-spacing: .14em; color: var(--gray); text-transform: uppercase;
  display: block;
}
.titleblock .v { font-size: 13px; font-weight: 700; line-height: 1.5; display: block; }
.titleblock .v.mono { font-family: var(--font-mono); font-weight: 600; }
.badge-status {
  display: inline-block; font-size: 12px; font-weight: 700;
  border: 2px solid var(--verde); color: var(--verde-deep);
  padding: 1px 10px; border-radius: 999px;
}
@media (max-width: 760px) {
  .titleblock { grid-template-columns: 1fr 1fr; }
  .titleblock > div { border-top: 1px solid var(--ink); }
  .titleblock > div:nth-child(-n+2) { border-top: none; }
  .titleblock > div:nth-child(odd) { border-left: none; }
  .titleblock > div:nth-child(even) { border-left: 1px solid var(--ink); }
}

/* ===== セクション（図面シート） ===== */
section.sheet { padding: 72px 0 24px; }
.sheet-head { display: flex; align-items: baseline; gap: 16px; border-bottom: 2px solid var(--ink); padding-bottom: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.sheet-no { font-family: var(--font-mono); font-size: 13px; font-weight: 600; letter-spacing: .1em; color: var(--verde-deep); }
.sheet-head h2 { font-family: var(--font-display); font-weight: 900; font-size: clamp(22px, 3vw, 30px); letter-spacing: .03em; }
.sheet-head .en { margin-left: auto; font-family: var(--font-mono); font-size: 11px; letter-spacing: .18em; color: var(--gray); text-transform: uppercase; }
.lead { max-width: 46em; font-size: 15px; }
.lead + .lead { margin-top: 1em; }

/* ===== 寸法値スタイルの数値 ===== */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin: 32px 0; }
.stat { background: var(--paper); padding: 20px 18px 16px; }
.stat .num { font-family: var(--font-mono); font-weight: 600; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.1; color: var(--verde-deep); }
.stat .num small { font-size: .45em; font-weight: 500; color: var(--ink); margin-left: 2px; }
.stat .cap { font-size: 12.5px; color: var(--gray); margin-top: 6px; font-weight: 500; }

/* ===== 写真 ===== */
.photo-band { margin: 48px 0 0; position: relative; }
.photo-band img { width: 100%; height: min(52vh, 460px); object-fit: cover; }
.photo-band figcaption {
  position: absolute; right: 16px; bottom: 12px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em;
  background: rgba(34,48,42,.8); color: #fff; padding: 4px 10px;
}
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 24px 0; }
.gallery figure { margin: 0; }
.gallery img { width: 100%; aspect-ratio: 3/2; object-fit: cover; border: 1px solid var(--rule); }
.gallery figcaption { font-family: var(--font-mono); font-size: 11px; color: var(--gray); padding-top: 6px; letter-spacing: .04em; }

/* ===== フロア ===== */
.floor { border: 1px solid var(--rule); background: #fff; margin-bottom: 40px; }
.floor-head { display: flex; align-items: baseline; gap: 14px; padding: 16px 22px; border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
.floor-head .fno { font-family: var(--font-mono); font-weight: 600; font-size: 30px; color: var(--verde); line-height: 1; }
.floor-head h3 { font-family: var(--font-display); font-weight: 700; font-size: 19px; }
.floor-head .use { margin-left: auto; font-size: 12.5px; font-weight: 700; color: var(--verde-deep); }
.floor-body { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 24px; padding: 22px; }
@media (max-width: 860px) { .floor-body { grid-template-columns: 1fr; } }
.floor-map { border: 1px solid var(--rule); background: #fff; }
.floor-map a { display: block; }
.floor-map img { width: 100%; }
.map-note { font-family: var(--font-mono); font-size: 11px; color: var(--gray); padding: 8px 10px; border-top: 1px solid var(--rule); }
.room-list { list-style: none; }
.room-list li { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 4px 14px; padding: 10px 2px; border-bottom: 1px dashed var(--rule); align-items: baseline; }
.room-list .rname { font-weight: 700; font-size: 14px; }
.room-list .rname small { font-weight: 500; color: var(--gray); margin-left: 6px; font-size: 12px; }
.room-list .rcap { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--verde-deep); white-space: nowrap; }
.room-list .ruse { grid-column: 1 / -1; font-size: 12.5px; color: var(--gray); }
.room-list .ruse b { color: var(--ink); font-weight: 700; }

/* ===== テーブル ===== */
.tbl-scroll { overflow-x: auto; margin: 24px 0; }
table.plan { border-collapse: collapse; width: 100%; min-width: 640px; font-size: 13.5px; }
table.plan caption { text-align: left; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; color: var(--gray); padding-bottom: 8px; }
table.plan th, table.plan td { padding: 10px 12px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
table.plan thead th { font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: .1em; color: var(--gray); border-bottom: 2px solid var(--ink); text-transform: uppercase; white-space: nowrap; }
table.plan .num { font-family: var(--font-mono); font-weight: 600; text-align: right; white-space: nowrap; }
table.plan .track { font-family: var(--font-mono); font-weight: 600; font-size: 12px; color: var(--verde-deep); white-space: nowrap; }
table.plan tfoot td { border-top: 2px solid var(--ink); border-bottom: none; font-weight: 700; }
.tnote { font-size: 12.5px; color: var(--gray); margin-top: 10px; }
.tnote li { margin-left: 1.4em; }

/* ===== 比較カード ===== */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 28px 0; }
@media (max-width: 760px) { .compare { grid-template-columns: 1fr; } }
.option { border: 1px solid var(--rule); background: #fff; padding: 20px 22px; }
.option.leaning { border: 2px solid var(--verde); }
.option h4 { font-family: var(--font-display); font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.option .pick { font-size: 11px; font-weight: 700; background: var(--verde); color: #fff; padding: 2px 10px; border-radius: 999px; }
.option ul { margin: 12px 0 0 1.3em; font-size: 13.5px; }
.option li { margin-bottom: 4px; }

/* ===== タイムライン ===== */
.days { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin: 28px 0; }
.day { border-top: 3px solid var(--verde); background: #fff; border-inline: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 18px 20px; }
.day .dno { font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .14em; color: var(--verde-deep); }
.day h4 { font-family: var(--font-display); font-size: 17px; font-weight: 700; margin: 4px 0 10px; }
.day ul { list-style: none; font-size: 13.5px; }
.day li { padding: 5px 0; border-bottom: 1px dashed var(--rule); }
.day li:last-child { border-bottom: none; }

/* ===== 論点 ===== */
.issues { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 8px; }
@media (max-width: 820px) { .issues { grid-template-columns: 1fr; } }
.issues h3 { font-family: var(--font-display); font-size: 18px; font-weight: 900; border-bottom: 2px solid var(--ink); padding-bottom: 8px; margin-bottom: 4px; }
.issues ol { list-style: none; counter-reset: q; }
.issues ol li { counter-increment: q; padding: 14px 0 14px 44px; position: relative; border-bottom: 1px dashed var(--rule); font-size: 14px; }
.issues ol li::before {
  content: counter(q, decimal-leading-zero);
  position: absolute; left: 0; top: 16px;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--verde);
}
.issues b { font-weight: 700; }
.issues .lean { font-size: 12.5px; color: var(--gray); display: block; }
.issues .lean b { color: var(--verde-deep); }

/* ===== フッター ===== */
footer { margin-top: 80px; background: var(--ink); color: #C7D2CC; padding: 44px 0 56px; font-size: 13px; }
footer h3 { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: #8FA39A; margin-bottom: 12px; }
footer a { color: #EAF2EE; }
footer ul { list-style: none; }
footer li { padding: 3px 0; }
footer .cols { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; }
@media (max-width: 720px) { footer .cols { grid-template-columns: 1fr; } }
footer .fin { margin-top: 28px; padding-top: 16px; border-top: 1px solid #3A4A42; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; color: #8FA39A; }

/* ===== 企画アイデア ===== */
.ideas { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 32px; }
.idea { border: 1px solid var(--rule); background: #fff; padding: 20px 22px; display: flex; flex-direction: column; }
.idea .tag { font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: .14em; color: var(--verde-deep); }
.idea h3 { font-family: var(--font-display); font-size: 17px; font-weight: 900; margin: 6px 0 10px; }
.idea p { font-size: 13.5px; margin: 0; }
.idea .memo { margin-top: auto; padding-top: 12px; font-size: 12px; color: var(--gray); border-top: 1px dashed var(--rule); margin-top: 14px; }
.idea .memo b { color: var(--ink); }