/* 004 森川工務店 ― 色はここだけ触れば差し替わる */
:root {
  --c-bg: #ffffff;
  --c-bg2: #f3f5f0;
  --c-main: #2f5d3a;
  --c-main-dark: #234a2c;
  --c-accent: #9c5a1a;
  --c-accent-dark: #804812;
  --c-text: #374151;
  --c-sub: #4b5563;
  --c-line: #dfe4da;
  --radius: 4px;
  --font: "Noto Sans JP", sans-serif;
  --font-head: "Zen Old Mincho", serif;
  --font-num: "Jost", sans-serif;
  --wrap: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.9; color: var(--c-text); background: var(--c-bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-main); }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section--tint { background: var(--c-bg2); }
@media (min-width: 1080px) { .section { padding: 112px 0; } }

.sec-head { margin-bottom: 40px; }
.sec-head__en { font-family: var(--font-num); font-size: 15px; letter-spacing: .2em; color: var(--c-accent); font-weight: 500; }
.sec-head__title { font-family: var(--font-head); font-size: clamp(26px, 4vw, 36px); color: var(--c-main); line-height: 1.4; margin-top: 4px; }
.sec-head__title::after { content: ""; display: block; width: 48px; height: 2px; background: var(--c-main); margin-top: 16px; }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px; border-radius: var(--radius);
  font-weight: 700; font-size: 16px; text-decoration: none; white-space: nowrap;
  transition: background-color .2s, color .2s, border-color .2s;
}
.btn--act { background: var(--c-accent); color: #fff; }
.btn--act:hover { background: var(--c-accent-dark); }
.btn--line { border: 2px solid var(--c-main); color: var(--c-main); background: #fff; }
.btn--line:hover { background: var(--c-main); color: #fff; }
.btn--white { background: #fff; color: var(--c-main); }
.btn--white:hover { background: var(--c-bg2); }
.btn--lg { min-height: 60px; font-size: 18px; padding: 0 36px; }

/* ヘッダー */
.header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .97); border-bottom: 1px solid var(--c-line); }
.header__inner { max-width: 1320px; margin: 0 auto; padding: 0 20px; height: 64px; display: flex; align-items: center; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; min-height: 48px; text-decoration: none; color: var(--c-main); }
.logo__mark { width: 36px; height: 36px; }
.logo__text { font-family: var(--font-head); font-size: 22px; letter-spacing: .08em; }
.gnav, .header__cta { display: none; }
@media (min-width: 1080px) {
  .header__inner { height: 84px; }
  .gnav { display: flex; gap: 24px; margin-left: auto; }
  .gnav a { display: flex; align-items: center; min-height: 44px; color: var(--c-text); text-decoration: none; font-size: 15px; font-weight: 700; }
  .gnav a:hover { color: var(--c-main); }
  .header__cta { display: flex; align-items: center; gap: 12px; }
  .tel { display: flex; flex-direction: column; min-height: 44px; justify-content: center; font-family: var(--font-num); font-size: 22px; line-height: 1.1; color: var(--c-main); text-decoration: none; font-weight: 500; }
  .tel small { font-family: var(--font); font-size: 15px; color: var(--c-sub); }
}

/* メインビジュアル */
.hero { position: relative; color: #fff; }
.hero__img { width: 100%; height: 78vh; min-height: 480px; max-height: 820px; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20, 35, 24, .62) 0%, rgba(20, 35, 24, .25) 55%, rgba(20, 35, 24, 0) 100%); }
.hero__body { position: absolute; z-index: 1; left: 0; right: 0; bottom: 48px; padding: 0 20px; max-width: var(--wrap); margin: 0 auto; }
.hero__en { font-family: var(--font-num); letter-spacing: .25em; font-size: 15px; }
.hero__title { font-family: var(--font-head); font-size: clamp(34px, 7vw, 64px); line-height: 1.35; margin: 12px 0 16px; text-shadow: 0 2px 16px rgba(0, 0, 0, .25); }
.hero__lead { font-size: clamp(15px, 2vw, 18px); }
@media (min-width: 1080px) { .hero__body { bottom: 96px; } }

/* 数字 */
.numbers { background: var(--c-main); color: #fff; }
.numbers__inner { display: grid; grid-template-columns: 1fr 1fr; }
.num { padding: 24px 8px; text-align: center; }
.num:last-child { grid-column: 1 / -1; border-top: 1px solid rgba(255, 255, 255, .25); }
.num__label { font-size: 15px; }
.num__value { font-family: var(--font-head); font-size: 20px; }
.num__value span { font-family: var(--font-num); font-size: 44px; font-weight: 500; margin-right: 4px; line-height: 1.2; }
.num__value--text { font-size: 22px; line-height: 2.4; }
@media (min-width: 768px) {
  .numbers__inner { grid-template-columns: repeat(3, 1fr); }
  .num { padding: 36px 8px; }
  .num:last-child { grid-column: auto; border-top: 0; }
  .num + .num { border-left: 1px solid rgba(255, 255, 255, .25); }
}

/* 考え方 */
.concept { display: grid; gap: 40px; }
.concept__no { font-family: var(--font-num); font-size: 48px; color: var(--c-line); font-weight: 500; line-height: 1; color: #7f9479; }
.concept__item h3 { font-family: var(--font-head); font-size: 24px; color: var(--c-main); margin: 12px 0; }
@media (min-width: 768px) { .concept { grid-template-columns: repeat(3, 1fr); gap: 48px; } }

/* 施工例 */
.works { display: grid; gap: 24px; }
.work a { display: block; background: #fff; text-decoration: none; color: inherit; border-radius: var(--radius); overflow: hidden; height: 100%; }
.work img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; transition: transform .5s; }
.work a:hover img { transform: scale(1.04); }
.work__body { padding: 20px; }
.work__tag { font-size: 15px; color: var(--c-accent); font-weight: 700; }
.work h3 { font-family: var(--font-head); font-size: 20px; color: var(--c-main); margin: 4px 0 8px; }
.more { text-align: center; margin-top: 40px; }
@media (min-width: 768px) { .works { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .works { grid-template-columns: repeat(3, 1fr); gap: 32px; } }

/* 流れ */
.flow { display: grid; gap: 0; border-left: 2px solid var(--c-line); margin-left: 8px; }
.flow li { position: relative; padding: 0 0 32px 28px; }
.flow li::before { content: ""; position: absolute; left: -9px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--c-main); }
.flow__no { font-family: var(--font-num); font-size: 15px; letter-spacing: .1em; color: var(--c-accent); font-weight: 500; }
.flow h3 { font-family: var(--font-head); font-size: 20px; color: var(--c-main); margin: 2px 0 4px; }
@media (min-width: 1080px) {
  .flow { grid-template-columns: repeat(6, 1fr); border-left: 0; border-top: 2px solid var(--c-line); margin: 0; }
  .flow li { padding: 28px 16px 0 0; }
  .flow li::before { left: 0; top: -9px; }
}

/* 職人の帯 */
.craft { position: relative; }
.craft img { width: 100%; height: 50vh; min-height: 320px; object-fit: cover; }
.craft::after { content: ""; position: absolute; inset: 0; background: rgba(20, 35, 24, .45); }
.craft__text { position: absolute; z-index: 1; inset: 0; display: grid; place-items: center; text-align: center; font-family: var(--font-head); font-size: clamp(28px, 5vw, 48px); line-height: 1.5; color: #fff; }

/* お客様の声 */
.voices { display: grid; gap: 20px; }
.voice { background: #fff; padding: 28px 24px; border-radius: var(--radius); border-top: 3px solid var(--c-main); }
.voice__who { margin-top: 16px; font-size: 15px; color: var(--c-sub); text-align: right; }
@media (min-width: 1080px) { .voices { grid-template-columns: repeat(3, 1fr); gap: 32px; } }

/* 見学会 */
.event { background: var(--c-main); color: #fff; padding: 72px 0; }
.event .sec-head__en { color: #e9c9a5; }
.event__title { font-family: var(--font-head); font-size: clamp(26px, 4vw, 36px); margin: 4px 0 16px; }
.events { display: grid; gap: 12px; margin: 32px 0; }
.ev { display: flex; gap: 20px; align-items: center; background: #fff; color: var(--c-text); padding: 20px; border-radius: var(--radius); }
.ev__date { flex: none; text-align: center; font-size: 15px; color: var(--c-sub); line-height: 1.3; width: 96px; }
.ev__date span { display: block; font-family: var(--font-num); font-size: 30px; color: var(--c-accent); font-weight: 500; }
.ev__type { font-size: 15px; font-weight: 700; color: var(--c-accent); }
.ev h3 { font-family: var(--font-head); font-size: 20px; color: var(--c-main); }
.ev__place { font-size: 15px; color: var(--c-sub); }
.event__btns { display: grid; gap: 12px; }
@media (min-width: 1080px) {
  .event { padding: 112px 0; }
  .event__inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 24px 64px; align-items: start; }
  .events { margin: 0; }
  .event__btns { grid-column: 2; display: flex; gap: 16px; }
}

/* 会社概要 */
.company { margin: 0; border-top: 1px solid var(--c-line); }
.company div { display: grid; gap: 4px; padding: 18px 0; border-bottom: 1px solid var(--c-line); }
.company dt { font-weight: 700; color: var(--c-main); }
.company dd { margin: 0; }
@media (min-width: 768px) { .company div { grid-template-columns: 200px 1fr; gap: 24px; } }

/* フッター */
.footer { background: #1f2a22; color: #e6ebe3; padding: 48px 0 24px; font-size: 15px; }
.footer__inner { display: grid; gap: 24px; }
.footer__name { font-family: var(--font-head); font-size: 22px; color: #fff; margin-bottom: 8px; }
.footer__btns { display: grid; gap: 12px; }
.footer__fiction { text-align: center; margin-top: 40px; }
@media (min-width: 768px) {
  .footer__inner { grid-template-columns: 1fr auto; align-items: end; }
  .footer__btns { display: flex; }
}


/* スマホのメニュー（JSが無くても開閉できる details 要素） */
.spmenu summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 0 14px; font-weight: 700; font-size: 15px; color: var(--c-main);
}
.spmenu summary::-webkit-details-marker { display: none; }
.spmenu__bar, .spmenu__bar::before, .spmenu__bar::after { display: block; width: 18px; height: 2px; background: currentColor; position: relative; }
.spmenu__bar::before, .spmenu__bar::after { content: ""; position: absolute; left: 0; }
.spmenu__bar::before { top: -6px; } .spmenu__bar::after { top: 6px; }
.spmenu[open] .spmenu__bar { background: transparent; }
.spmenu[open] .spmenu__bar::before { top: 0; transform: rotate(45deg); }
.spmenu[open] .spmenu__bar::after { top: 0; transform: rotate(-45deg); }
.spmenu__nav { position: absolute; left: 0; right: 0; top: 100%; background: #fff; padding: 4px 20px 20px; box-shadow: 0 12px 24px rgba(0, 0, 0, .1); display: flex; flex-direction: column; }
.spmenu__nav a { display: flex; align-items: center; min-height: 52px; color: var(--c-main); text-decoration: none; font-weight: 700; border-bottom: 1px solid rgba(0, 0, 0, .08); }
.spmenu { flex: none; }
.spmenu summary { white-space: nowrap; min-width: 44px; justify-content: center; }
.header__btn { flex: none; white-space: nowrap; }
/* 狭い画面では三本線だけ（「メニュー」は読み上げ用に残す） */
@media (max-width: 479px) {
  .spmenu summary { padding: 0 10px; }
  .spmenu__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
}
@media (min-width: 1080px) { .spmenu { display: none; } }
h1, h2, h3, p, dd, li { word-break: auto-phrase; }
.spmenu { margin-left: auto; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}