@charset "UTF-8";
/* ============================================================
   株式会社壱屋 — 共通スタイル
   配色: 深緑 × 橙。写真が1枚も無い前提で、余白と文字組みで持たせる設計。
   写真をもらったら .works-grid のプレースホルダを <img> に置き換える。
   ============================================================ */

:root {
  /* 緑 */
  --green-900: #163024;
  --green-800: #1e3e30;
  --green-700: #27503e;
  --green-600: #31604b;   /* 主役 */
  --green-100: #e4ede6;
  --green-50:  #f1f6f2;
  /* 橙 */
  --orange:      #c0662e; /* 面・大きい数字用 */
  --orange-ink:  #9c4a1c; /* 小さい文字用(白地で6.1:1) */
  --orange-50:   #fbf1e9;
  /* 無彩色 */
  --paper: #faf8f4;
  --white: #ffffff;
  --line:  #e4dfd5;
  --line-strong: #cfc8ba;
  --ink:   #1c2622;
  --muted: #55616c;
  --gold:      #e8b962; /* 濃い背景の上でだけ使う */
  --gold-ink:  #9c6410; /* 白地に置く★用(白地で4.95:1)。--gold は白地だと1.8:1で見えない */

  --wrap: 1080px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(28,38,34,.05), 0 8px 28px -12px rgba(28,38,34,.18);
  --shadow-lg: 0 2px 4px rgba(28,38,34,.06), 0 22px 48px -18px rgba(28,38,34,.28);

  --sans: "Noto Sans JP", system-ui, sans-serif;
  --serif: "Noto Serif JP", serif;

  --header-h: 66px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.9;
  font-size: 1rem;
  letter-spacing: .02em;
}

h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.45; font-weight: 700; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 22px; }
.wrap-narrow { max-width: 820px; margin-inline: auto; padding-inline: 22px; }

section { padding: clamp(60px, 8.5vw, 108px) 0; }

/* ---------- 確認用バナー ---------- */
.notice {
  background: #fdf6e3;
  color: #6b5518;
  border-bottom: 1px solid #ecdcb2;
  text-align: center;
  font-size: .8rem;
  line-height: 1.7;
  padding: 9px 18px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 248, 244, .93);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--wrap); margin-inline: auto;
  padding: 0 22px;
  min-height: var(--header-h);
  display: flex; align-items: center; gap: 20px;
}
.brand { text-decoration: none; display: flex; align-items: baseline; gap: 9px; flex: none; }
.brand .mark {
  font-family: var(--serif); font-size: 1.42rem; font-weight: 700;
  letter-spacing: .12em; color: var(--green-700);
}
.brand .en { font-size: .58rem; letter-spacing: .26em; color: var(--muted); font-weight: 500; }

.nav { margin-left: auto; }
.nav ul { display: flex; align-items: center; gap: 4px; }
.nav a {
  display: block; text-decoration: none; font-size: .86rem; font-weight: 500;
  padding: 8px 11px; border-radius: 6px; color: var(--ink);
  position: relative; white-space: nowrap; transition: color .18s;
}
.nav a::after {
  content: ""; position: absolute; left: 11px; right: 11px; bottom: 3px;
  height: 2px; background: var(--orange); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .22s ease;
}
.nav a:hover { color: var(--green-600); }
.nav a:hover::after, .nav a[aria-current="true"]::after { transform: scaleX(1); }
.nav a[aria-current="true"] { color: var(--green-600); font-weight: 700; }

.header-tel {
  flex: none; display: flex; flex-direction: column; align-items: flex-end;
  text-decoration: none; line-height: 1.25; padding-left: 4px;
}
.header-tel .num {
  font-family: var(--serif); font-size: 1.16rem; font-weight: 700; color: var(--green-700);
  letter-spacing: .01em;
}
.header-tel .cap { font-size: .6rem; color: var(--muted); letter-spacing: .08em; }

.nav-toggle {
  display: none; flex: none; margin-left: auto;
  width: 44px; height: 44px; border: 1px solid var(--line-strong); border-radius: 8px;
  background: var(--white); cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 19px; height: 1.5px; background: var(--green-700); position: relative; transition: background .2s; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 19px; height: 1.5px; background: var(--green-700);
  transition: transform .24s ease, top .24s ease;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* ---------- ヒーロー ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,.035) 0 1px, transparent 1px 10px),
    linear-gradient(168deg, var(--green-900) 0%, var(--green-700) 55%, var(--green-600) 100%);
}
.hero::after {
  /* 社名「壱」の透かし */
  content: "壱";
  position: absolute; right: -3vw; bottom: -12vw;
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(18rem, 34vw, 30rem); line-height: .8;
  color: rgba(255,255,255,.055); pointer-events: none; user-select: none;
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: var(--wrap); margin-inline: auto; padding: clamp(64px, 9vw, 104px) 22px clamp(60px, 8vw, 96px);
}
.hero .eyebrow {
  font-size: .74rem; letter-spacing: .34em; color: var(--gold); font-weight: 700; margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(1.85rem, 5.2vw, 3.15rem); letter-spacing: .05em; line-height: 1.42;
}
.hero h1 .u {
  background: linear-gradient(transparent 62%, rgba(232,185,98,.32) 62%);
  padding-inline: .06em;
}
.hero .lead {
  margin-top: 24px; max-width: 32em; color: #d3ded6;
  font-size: clamp(.95rem, 1.6vw, 1.06rem); line-height: 1.95;
}
.hero-rule { width: 54px; height: 3px; background: var(--gold); border-radius: 3px; margin: 30px 0 26px; }

.badges { display: flex; flex-wrap: wrap; gap: 9px; }
.badge {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px; padding: 7px 16px; font-size: .8rem; letter-spacing: .03em;
}
.badge b { color: var(--gold); font-weight: 700; }

.hero-cta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.tel-btn {
  background: #fff; color: var(--green-800); text-decoration: none;
  padding: 15px 30px; border-radius: 10px; box-shadow: var(--shadow-lg);
  display: inline-flex; flex-direction: column; line-height: 1.3;
  transition: transform .16s ease, box-shadow .16s ease;
}
.tel-btn .num { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; letter-spacing: .01em; }
.tel-btn .cap { font-size: .68rem; color: var(--muted); font-weight: 500; letter-spacing: .06em; }
.tel-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,.12), 0 26px 52px -18px rgba(0,0,0,.5); }
/* ヒーロー下部は背景が一番明るい(--green-600)ので、文字はここに合わせて明るめにする */
.hero-cta .note { font-size: .82rem; color: #c9d8ce; max-width: 15em; line-height: 1.7; }

/* ---------- セクション見出し ---------- */
.sec-head { text-align: center; margin-bottom: clamp(38px, 5vw, 58px); }
.sec-label {
  font-size: .72rem; letter-spacing: .34em; font-weight: 700; color: var(--orange-ink);
  display: block; margin-bottom: 12px;
}
.sec-title { font-size: clamp(1.42rem, 3.2vw, 2.05rem); letter-spacing: .07em; }
.sec-lead { margin-top: 16px; color: var(--muted); font-size: .95rem; }
.on-dark .sec-label { color: var(--gold); }
.on-dark .sec-title { color: #fff; }
.on-dark .sec-lead { color: #c2d0c7; }

/* ---------- 二本柱(家の外 / 家の中) ---------- */
.pillars { background: var(--white); border-block: 1px solid var(--line); }
.pillar-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: stretch; }
.pillar {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column; background: var(--paper);
}
/* ※ 修飾クラスは is-* を使わないこと。
   出現アニメーションの状態クラス .is-in と名前がぶつかる */
.pillar--outside { background: var(--green-50); border-color: #d3e2d7; }
.pillar--inside  { background: var(--orange-50); border-color: #eedcc9; }
.pillar-head { padding: 26px 28px 20px; border-bottom: 1px dashed var(--line-strong); }
.pillar-kicker { font-size: .72rem; letter-spacing: .28em; font-weight: 700; color: var(--muted); }
.pillar h3 { font-size: 1.3rem; margin-top: 8px; letter-spacing: .06em; color: var(--green-800); }
.pillar--inside h3 { color: #7a3a12; }
.pillar-head p { margin-top: 12px; font-size: .9rem; color: var(--muted); line-height: 1.85; }
.pillar-list { padding: 22px 28px 28px; display: grid; gap: 14px; }
.pillar-list li { display: flex; gap: 13px; align-items: flex-start; font-size: .95rem; }
.pillar-list svg { flex: none; margin-top: 4px; color: var(--green-600); }
.pillar--inside .pillar-list svg { color: var(--orange); }
.pillar-list b { font-weight: 700; display: block; }
.pillar-list span { display: block; font-size: .82rem; color: var(--muted); line-height: 1.7; }

.pillar-bridge {
  margin-top: 30px; text-align: center; font-family: var(--serif);
  font-size: clamp(1.05rem, 2.4vw, 1.32rem); color: var(--green-700); letter-spacing: .08em;
}
.pillar-bridge span {
  display: inline-block; padding: 14px 30px; border: 1px solid var(--line-strong);
  border-radius: 999px; background: var(--white);
}

/* ---------- 「したい」カード ---------- */
.wants { background: var(--paper); }
.want-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(248px, 1fr)); gap: 15px; }
.want {
  background: var(--white); border: 1px solid var(--line); border-left: 3px solid var(--orange);
  border-radius: var(--radius-sm); padding: 19px 22px; font-size: .94rem; line-height: 1.8;
  box-shadow: var(--shadow);
}

/* ---------- 選ばれる理由 ---------- */
.reasons { background: var(--green-800); color: #fff; position: relative; overflow: hidden; }
.reasons::before {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,.03) 0 1px, transparent 1px 11px);
}
.reasons .wrap { position: relative; z-index: 1; }
.reason-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(262px, 1fr)); gap: 34px; }
.reason { text-align: center; }
.reason .num {
  font-family: var(--serif); font-size: 2.5rem; color: var(--gold); line-height: 1;
  display: block; margin-bottom: 14px;
}
.reason h3 { font-size: 1.14rem; letter-spacing: .06em; }
.reason p { margin-top: 13px; font-size: .9rem; color: #c2d0c7; line-height: 1.9; text-align: left; }

/* ---------- 施工事例(写真待ち) ---------- */
.works { background: var(--white); border-block: 1px solid var(--line); }
.works-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.work-ph {
  aspect-ratio: 4 / 3; border: 1px dashed var(--line-strong); border-radius: var(--radius-sm);
  background:
    repeating-linear-gradient(135deg, rgba(49,96,75,.04) 0 1px, transparent 1px 12px),
    var(--green-50);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 22px; gap: 12px; color: var(--muted);
}
.work-ph svg { color: #9db3a4; }
.work-ph .t { font-family: var(--serif); font-size: .98rem; color: var(--green-700); letter-spacing: .05em; }
.work-ph .s { font-size: .78rem; line-height: 1.7; }
.works-note {
  margin-top: 26px; text-align: center; font-size: .88rem; color: var(--muted); line-height: 1.9;
}
.works-note b { color: var(--orange-ink); }

/* ---------- お客様の声 ---------- */
.voices { background: var(--paper); }
.voice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.voice {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px 24px; position: relative; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.voice .qm {
  font-family: Georgia, serif; font-size: 3.2rem; line-height: 1; color: var(--orange);
  opacity: .28; position: absolute; top: 10px; left: 18px;
}
.voice .stars { color: var(--gold-ink); letter-spacing: .18em; font-size: .98rem; position: relative; }
.voice p { margin-top: 12px; font-size: .93rem; line-height: 1.95; flex: 1; }
.voice .src { margin-top: 16px; font-size: .74rem; color: var(--muted); text-align: right; }
.rating-strip {
  margin-top: 30px; text-align: center; font-size: .88rem; color: var(--muted);
}
.rating-strip b { font-family: var(--serif); font-size: 1.5rem; color: var(--orange-ink); vertical-align: -2px; }

/* ---------- 流れ ---------- */
.flow-list { max-width: 760px; margin-inline: auto; display: grid; gap: 14px; counter-reset: step; }
.flow-item {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 20px 26px; display: flex; gap: 20px; align-items: flex-start; box-shadow: var(--shadow);
}
.flow-item::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--serif); font-size: 1.45rem; font-weight: 700; color: var(--orange);
  flex: none; line-height: 1.5; min-width: 1.6em;
}
.flow-item h3 { font-size: 1.02rem; letter-spacing: .05em; }
.flow-item p { font-size: .88rem; color: var(--muted); margin-top: 5px; line-height: 1.85; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 800px; margin-inline: auto; display: grid; gap: 12px; }
.faq details {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  overflow: hidden; box-shadow: var(--shadow);
}
.faq summary {
  cursor: pointer; padding: 19px 52px 19px 24px; font-weight: 700; font-size: .97rem;
  list-style: none; display: flex; gap: 14px; align-items: baseline; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "Q"; font-family: var(--serif); font-size: 1.12rem; color: var(--orange);
  flex: none; line-height: 1;
}
.faq summary::after {
  content: ""; position: absolute; right: 24px; top: 50%; width: 9px; height: 9px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: translateY(-70%) rotate(45deg); transition: transform .22s ease;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq details p { padding: 0 24px 21px 52px; font-size: .92rem; color: #37423c; line-height: 1.95; }

/* ---------- 会社概要・お問い合わせ ---------- */
.company { background: var(--white); border-top: 1px solid var(--line); }
.company-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: start; }
.contact-card {
  background: linear-gradient(160deg, var(--green-800), var(--green-600));
  color: #fff; border-radius: var(--radius); padding: 38px 32px; text-align: center;
  box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.contact-card::before {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 1px, transparent 1px 10px);
}
.contact-card > * { position: relative; }
.contact-card .cap { font-size: .82rem; letter-spacing: .16em; color: #c2d0c7; }
.contact-card .tel-big {
  display: block; margin-top: 12px; font-family: var(--serif); font-size: clamp(1.85rem, 5vw, 2.3rem);
  font-weight: 700; color: #fff; text-decoration: none; letter-spacing: .02em;
}
.contact-card .hours { margin-top: 14px; font-size: .84rem; color: #c2d0c7; line-height: 1.8; }
.contact-card .said {
  margin-top: 20px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.2);
  font-size: .84rem; color: #dbe5de; line-height: 1.8;
}

dl.spec { font-size: .93rem; }
dl.spec > div { display: flex; gap: 16px; padding: 13px 4px; border-bottom: 1px solid var(--line); }
dl.spec dt { flex: 0 0 6.5em; color: var(--muted); font-size: .87rem; }
dl.spec dd { flex: 1; }
.area-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 4px; }
.area-tags li {
  font-size: .82rem; background: var(--green-50); border: 1px solid #d3e2d7;
  border-radius: 999px; padding: 3px 13px; color: var(--green-700);
}
.area-note { display: block; margin-top: 9px; font-size: .8rem; color: var(--muted); }

/* ---------- フッター ---------- */
.site-footer { background: var(--green-900); color: #93a89b; padding: 46px 22px 34px; text-align: center; }
.site-footer .brand-f {
  font-family: var(--serif); color: #fff; font-size: 1.3rem; letter-spacing: .16em; margin-bottom: 6px;
}
.site-footer .brand-f small { display: block; font-size: .56rem; letter-spacing: .3em; color: #93a89b; margin-top: 4px; }
.site-footer .meta { font-size: .84rem; line-height: 1.9; margin-top: 16px; }
.site-footer .meta a { color: #cfe0d5; }
.sns {
  display: inline-flex; align-items: center; gap: 9px; margin-top: 22px;
  border: 1px solid rgba(255,255,255,.24); border-radius: 999px; padding: 9px 21px;
  text-decoration: none; color: #fff; font-size: .86rem; transition: background .18s;
}
.sns:hover { background: rgba(255,255,255,.09); }
.site-footer .disclaimer {
  margin-top: 26px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12);
  font-size: .74rem; line-height: 1.8; color: #8fa89a;
}
.site-footer .copy { margin-top: 16px; font-size: .72rem; color: #8fa89a; }

/* ---------- スマホ固定CTA ---------- */
.fixed-cta { display: none; }

/* ---------- 出現アニメーション ---------- */
.reveal { opacity: 0; transform: translateY(16px); }
.js .reveal { transition: opacity .62s ease, transform .62s cubic-bezier(.22,.7,.3,1); }
.js .reveal.is-in { opacity: 1; transform: none; }
/* JSが動かない環境では最初から全部見える */
html:not(.js) .reveal { opacity: 1; transform: none; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 1000px) {
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 34px -20px rgba(28,38,34,.4);
    display: none;
  }
  .nav.is-open { display: block; }
  .nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 14px 16px; }
  .nav a { padding: 13px 10px; border-bottom: 1px solid var(--line); font-size: .95rem; }
  .nav a::after { display: none; }
  .nav a[aria-current="true"]::before { content: "▶ "; color: var(--orange); font-size: .8em; }
  .nav-toggle { display: flex; order: 3; margin-left: 8px; }
  .header-tel { margin-left: auto; }
  .site-header { position: sticky; }
}
@media (max-width: 860px) {
  .pillar-grid { grid-template-columns: 1fr; }
  .company-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 700px) {
  /* スマホの文字サイズ。既定16px→19px(約19%増)。
     1件目(昇栄仮設)で「小さい」と2回指摘され19.5pxに着地した実績の先回り。
     大きすぎると言われたらこの数値を下げる。 */
  html { font-size: 19px; }
  /* 狭い画面ではヘッダーの3要素(社名・電話・☰)が入りきらず、
     ☰が画面の右端に張り付いてしまう。ローマ字と補足を落として詰める */
  .header-inner { gap: 10px; }
  .brand .en { display: none; }
  .header-tel .num { font-size: 1rem; }
  .header-tel .cap { display: none; }
  .nav-toggle { margin-left: 4px; }
  .hero::after { font-size: 20rem; right: -8vw; bottom: -8vw; }
  .hero-cta { gap: 12px; }
  .tel-btn { width: 100%; text-align: center; align-items: center; }
  .hero-cta .note { max-width: none; }
  .pillar-head, .pillar-list { padding-inline: 22px; }
  .flow-item { padding: 18px 20px; gap: 14px; }
  .faq summary { padding: 17px 46px 17px 20px; }
  .faq details p { padding: 0 20px 19px 46px; }
  dl.spec > div { flex-direction: column; gap: 3px; }
  dl.spec dt { flex: none; }
}
@media (max-width: 640px) {
  .fixed-cta {
    display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 200;
    background: var(--orange); box-shadow: 0 -6px 20px -8px rgba(0,0,0,.35);
  }
  .fixed-cta a {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 13px 16px; color: #fff; text-decoration: none; font-weight: 700; font-size: 1rem;
  }
  body { padding-bottom: 72px; }
}

/* ---------- 動きを減らす設定の人には無効 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { transition: none; }
  .reveal { opacity: 1; transform: none; }
  .tel-btn { transition: none; }
}

/* ---------- キーボード操作の可視化 ---------- */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--orange); outline-offset: 3px; border-radius: 4px;
}