@charset "UTF-8";

/* ==========================================================================
   鈴木建設株式会社 ご提案用サンプル
   様式：⑥信頼感 × ④ナチュラル（環境）
   基調：社章の紺 #46587F ／ 生成り #F5F2EC ／ 若竹 #3E7F5F
   構造：社章の斜線（傾き 1:1.48 ＝ 約34度）をページ全体の基準線として使う
   ========================================================================== */

:root {
  color-scheme: only light;

  --navy: #46587f;
  --navy-deep: #354463;
  --navy-ink: #222c41;
  --green: #3e7f5f;
  --green-deep: #2f6349;
  --paper: #f5f2ec;
  --line: #dcd6cb;
  --text: #23262b;
  --text-mute: #5c6068;
  --white: #ffffff;

  --fs-note: 14px;
  --fs-cap: 15px;
  --fs-body: 18px;
  --fs-lead: 20px;
  --fs-h3: 24px;
  --fs-h2: 32px;
  --fs-h1: 40px;

  --wrap: 1120px;
  --read: 720px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family:
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP",
    "Yu Gothic Medium", "Yu Gothic", Meiryo, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--navy-deep);
}

.wrap {
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
}
.nb {
  display: inline-block;
}

/* --------------------------------------------------------------- 提案バー */
.proposal {
  background: #e8e3d9;
  color: #3c3a35;
  border-bottom: 1px solid #cfc7b8;
  font-size: var(--fs-cap);
  line-height: 1.7;
  padding: 10px 0;
}
.proposal p {
  margin: 0;
}
.proposal strong {
  color: #7a2f27;
}

/* ----------------------------------------------------------------- ヘッダー */
.site-head {
  background: #fff;
  color: var(--navy-ink);
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 6px rgba(34, 44, 65, 0.06);
}
.head-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 11px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  color: var(--navy-ink);
}
.brand .mark {
  width: 26px;
  flex: none;
}
.brand .mark img {
  width: 100%;
}
.brand-name {
  display: block;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.25;
}
.brand-sub {
  display: block;
  font-size: var(--fs-note);
  color: var(--text-mute);
  letter-spacing: 0.06em;
}

.head-tel {
  text-align: right;
}
.head-tel .label {
  font-size: var(--fs-note);
  color: var(--text-mute);
}
.head-tel .num {
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--navy-deep);
  text-decoration: none;
  display: block;
  line-height: 1.2;
}

.head-nav {
  border-top: 1px solid var(--line);
}
.head-nav ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.head-nav a {
  display: block;
  padding: 11px 6px;
  color: var(--navy-ink);
  text-decoration: none;
  font-size: var(--fs-body);
  letter-spacing: 0.04em;
  border-bottom: 3px solid transparent;
}
.head-nav a:hover,
.head-nav a:focus-visible {
  color: var(--navy-deep);
  border-bottom-color: var(--navy);
}

.nav-toggle {
  display: none;
}

/* --------------------------------------------------------------- ヒーロー */
.hero {
  position: relative;
  background: var(--navy-ink);
  overflow: hidden;
}
.hero-photo {
  position: absolute;
  inset: 0;
}
.hero-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 58%;
  opacity: 0;
  transition: opacity 1.1s ease;
}
.hero-photo img.is-on {
  opacity: 1;
}

/* 写真の切り替えボタン */
.hero-dots {
  position: absolute;
  right: 22px;
  bottom: 20px;
  z-index: 3;
  display: flex;
  gap: 10px;
}
.hero-dots button {
  appearance: none;
  width: 40px;
  height: 4px;
  padding: 10px 0;
  border: 0;
  background: none;
  cursor: pointer;
  position: relative;
}
.hero-dots button::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 4px;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.45);
  transition: background 0.3s ease;
}
.hero-dots button[aria-selected="true"]::before {
  background: #fff;
}
.hero-dots button:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}
.hero-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(34, 44, 65, 0.92) 0%,
    rgba(34, 44, 65, 0.78) 42%,
    rgba(34, 44, 65, 0.3) 100%
  );
}
.hero-inner {
  position: relative;
  padding: 76px 0 84px;
  color: #fff;
}
.hero-eyebrow {
  display: inline-block;
  font-size: var(--fs-cap);
  letter-spacing: 0.16em;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 2px;
  padding: 5px 14px;
  margin-bottom: 22px;
}
.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35);
}
.hero-lead {
  font-size: var(--fs-lead);
  line-height: 1.9;
  margin: 0 0 30px;
  max-width: 30em;
  color: #edf0f6;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  border-radius: 3px;
  text-decoration: none;
  font-size: var(--fs-body);
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 2px solid transparent;
}
.btn-tel {
  background: #fff;
  color: var(--navy-deep);
}
.btn-tel .n {
  font-size: 22px;
  letter-spacing: 0.02em;
}
.btn-ghost {
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn-line {
  border-color: var(--navy);
  color: var(--navy-deep);
  background: #fff;
}
.btn-line:hover {
  background: var(--navy);
  color: #fff;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* ------------------------------------------------------------------ 数字帯 */
.figures {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.figures ul {
  list-style: none;
  margin: 0;
  padding: 30px 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.figures li {
  text-align: center;
}
.figures .v {
  display: block;
  font-size: 30px;
  font-weight: 700;
  color: var(--navy-deep);
  line-height: 1.3;
}
.figures .v small {
  font-size: var(--fs-body);
  font-weight: 700;
}
.figures .k {
  display: block;
  font-size: var(--fs-cap);
  color: var(--text-mute);
  margin-top: 4px;
}

/* ---------------------------------------------------------------- セクション */
.sec {
  padding: 74px 0;
}
.sec-paper {
  background: var(--paper);
}
.sec-navy {
  background: var(--navy-ink);
  color: #fff;
}
.sec-navy .sec-head h2 {
  color: #fff;
}
.sec-navy .sec-head .en {
  color: #a9b6d2;
}

.sec-head {
  margin-bottom: 38px;
}
.sec-head .en {
  display: block;
  font-size: var(--fs-cap);
  letter-spacing: 0.18em;
  color: var(--navy-deep);
  font-weight: 700;
  margin-bottom: 8px;
}
.sec-head h2 {
  margin: 0;
  font-size: clamp(24px, 3.6vw, var(--fs-h2));
  line-height: 1.4;
  font-weight: 700;
  color: var(--navy-ink);
  letter-spacing: 0.02em;
}
.sec-head p {
  margin: 16px 0 0;
  max-width: var(--read);
}

.sec-catch {
  font-size: var(--fs-lead);
  font-weight: 700;
  color: var(--navy-deep);
  margin: 14px 0 0;
}
.sec-navy .sec-catch {
  color: #dfe5f2;
}

.contact-box .en {
  display: block;
  font-size: var(--fs-cap);
  letter-spacing: 0.18em;
  color: #c3cde4;
  margin-bottom: 8px;
}
.contact-box .lead {
  font-size: var(--fs-lead);
  line-height: 1.7;
  margin: 0 0 22px;
  color: #fff;
}

/* 事業内容 */
.works3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}
.work-card {
  background: #fff;
  border: 1px solid var(--line);
}
.work-card .band {
  height: 6px;
  background: var(--navy);
}
.work-card:nth-child(2) .band {
  background: var(--green);
}
.work-card:nth-child(3) .band {
  background: #8a6e4b;
}
.work-card .body {
  padding: 26px 24px 28px;
}
.work-card h3 {
  margin: 0 0 12px;
  font-size: var(--fs-h3);
  line-height: 1.45;
  color: var(--navy-ink);
}
.work-card p {
  margin: 0 0 16px;
  font-size: var(--fs-body);
}
.work-card ul {
  margin: 0;
  padding-left: 1.2em;
  font-size: var(--fs-cap);
  color: var(--text-mute);
  line-height: 1.9;
}

/* ------------------------------------------------- ギミック：工事の、前と後 */
.ba-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0;
}
.ba-tabs button {
  appearance: none;
  border: 0;
  cursor: pointer;
  background: transparent;
  color: #d6ddec;
  font-family: inherit;
  font-size: var(--fs-body);
  font-weight: 700;
  padding: 16px 8px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  border-right: 1px solid rgba(255, 255, 255, 0.28);
  transition:
    background 0.18s ease,
    color 0.18s ease;
}
.ba-tabs button:last-child {
  border-right: 0;
}
.ba-tabs button:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.ba-tabs button[aria-selected="true"] {
  background: #fff;
  color: var(--navy-ink);
}
.ba-tabs .step {
  display: block;
  font-size: var(--fs-note);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--green);
}
.ba-tabs button[aria-selected="true"] .step {
  color: var(--green-deep);
}

.ba-stage {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-top: 0;
  padding: 34px 30px 30px;
}
.ba-panel[hidden] {
  display: none;
}
.ba-panel h3 {
  margin: 0 0 6px;
  font-size: var(--fs-h3);
  line-height: 1.5;
  color: #fff;
}
.ba-panel .quote {
  margin: 18px 0 0;
  padding: 18px 22px;
  border-left: 4px solid var(--green);
  background: rgba(0, 0, 0, 0.22);
  font-size: var(--fs-body);
  line-height: 1.9;
  color: #f0f3f8;
}
.ba-panel .quote span {
  display: block;
  font-size: var(--fs-cap);
  color: #a9b6d2;
  margin-top: 10px;
}
.ba-panel .num {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 20px 0 0;
  flex-wrap: wrap;
}
.ba-panel .num b {
  font-size: 44px;
  line-height: 1;
  color: #fff;
}
.ba-panel .num em {
  font-style: normal;
  font-size: var(--fs-cap);
  color: #a9b6d2;
}
.ba-note {
  margin: 18px 0 0;
  font-size: var(--fs-cap);
  color: #a9b6d2;
}

/* -------------------------------------------------------------- 施工・表彰 */
.award {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 0;
  border: 1px solid var(--line);
  background: #fff;
  margin-bottom: 34px;
}
.award .tx {
  padding: 34px 32px;
}
.award .ribbon {
  display: inline-block;
  background: var(--navy-deep);
  color: #fff;
  font-size: var(--fs-cap);
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 5px 14px;
  border-radius: 2px;
  margin-bottom: 14px;
}
.award h3 {
  margin: 0 0 14px;
  font-size: var(--fs-h3);
  line-height: 1.5;
  color: var(--navy-ink);
}
.award dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  font-size: var(--fs-cap);
}
.award dt {
  color: var(--text-mute);
}
.award dd {
  margin: 0;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.gallery figure {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
}
.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.award-textonly {
  grid-template-columns: minmax(0, 1fr);
}

.gallery figcaption {
  padding: 16px 18px;
  font-size: var(--fs-cap);
  color: var(--text-mute);
  line-height: 1.8;
}
.gallery figcaption b {
  display: block;
  font-size: var(--fs-body);
  color: var(--navy-ink);
  margin-bottom: 4px;
}

/* ------------------------------------------------------------ 許可・認証 */
.creds {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}
.cred {
  background: #fff;
  border: 1px solid var(--line);
  padding: 26px 26px 28px;
  border-top: 5px solid var(--navy);
}
.cred:nth-child(even) {
  border-top-color: var(--navy);
}
.cred h3 {
  margin: 0 0 10px;
  font-size: var(--fs-h3);
  line-height: 1.5;
  color: var(--navy-ink);
}
.cred .no {
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--navy-deep);
}
.cred p {
  margin: 10px 0 0;
  font-size: var(--fs-cap);
  color: var(--text-mute);
}
.cred ul {
  margin: 12px 0 0;
  padding-left: 1.2em;
  font-size: var(--fs-cap);
  line-height: 1.9;
}

/* ---------------------------------------------------------------- アクセス */
.access {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}
.access .map {
  border: 1px solid var(--line);
  background: #fff;
}
.access .map iframe {
  display: block;
  width: 100%;
  height: 440px;
  border: 0;
}
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-body);
}
.info-table th,
.info-table td {
  border-bottom: 1px solid var(--line);
  padding: 14px 4px;
  text-align: left;
  vertical-align: top;
}
.info-table th {
  width: 8.5em;
  color: var(--text-mute);
  font-weight: 700;
}

/* ---------------------------------------------------------------- 問い合わせ */
.contact-box {
  background: var(--navy);
  color: #fff;
  padding: 46px 34px;
  text-align: center;
}
.contact-box h2 {
  color: #fff;
  border-left: 0;
  padding-left: 0;
}
.contact-box p {
  margin: 0 0 26px;
  color: #dde3ef;
}
.contact-lines {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

/* ------------------------------------------------------------------ フッター */
.site-foot {
  background: var(--navy-ink);
  color: #c9d0de;
  padding: 46px 0 108px;
  font-size: var(--fs-cap);
}
.foot-top {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
  justify-content: space-between;
  align-items: flex-start;
}
.foot-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #fff;
}
.foot-brand {
  text-decoration: none;
}
.foot-brand .mark {
  width: 44px;
  flex: none;
  background: #fff;
  padding: 9px 11px;
  border-radius: 2px;
}
.foot-brand .mark img {
  width: 100%;
}
.foot-brand .n {
  font-size: var(--fs-lead);
  font-weight: 700;
}
.foot-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
}
.foot-links a {
  color: #c9d0de;
  text-decoration: none;
}
.foot-links a:hover {
  color: #fff;
}
.foot-note {
  margin: 26px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  line-height: 1.9;
}
.foot-note p {
  margin: 0 0 8px;
}

/* --------------------------------------------------------- 下部固定 電話バー */
.telbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  background: var(--navy-deep);
  display: none;
}
.telbar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 10px;
  color: #fff;
  text-decoration: none;
  font-size: var(--fs-body);
  font-weight: 700;
}
.telbar .n {
  font-size: 22px;
}

/* ------------------------------------------------------------------ 下層共通 */
.page-head {
  background: var(--navy);
  color: #fff;
  padding: 46px 0;
  position: relative;
  overflow: hidden;
}
.page-head h1 {
  margin: 0;
  font-size: clamp(26px, 4.4vw, var(--fs-h1));
  line-height: 1.4;
}
.page-head .en {
  display: block;
  font-size: var(--fs-cap);
  letter-spacing: 0.18em;
  color: #c3cde4;
  margin-bottom: 6px;
}

.crumbs {
  font-size: var(--fs-cap);
  color: var(--text-mute);
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.crumbs a {
  color: var(--text-mute);
}

.block {
  margin-bottom: 56px;
}
.block:last-child {
  margin-bottom: 0;
}
.block h2 {
  font-size: clamp(22px, 3.2vw, 28px);
  line-height: 1.45;
  color: var(--navy-ink);
  margin: 0 0 22px;
  padding-left: 16px;
  border-left: 6px solid var(--navy);
}
.block h3 {
  font-size: var(--fs-h3);
  line-height: 1.5;
  color: var(--navy-ink);
  margin: 30px 0 12px;
}

.history {
  list-style: none;
  margin: 0;
  padding: 0;
}
.history li {
  display: grid;
  grid-template-columns: 11em minmax(0, 1fr);
  gap: 10px 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.history .y {
  font-weight: 700;
  color: var(--navy-deep);
}

.qualify {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-body);
}
.qualify th,
.qualify td {
  border: 1px solid var(--line);
  padding: 12px 16px;
  text-align: left;
}
.qualify th {
  background: var(--paper);
  font-weight: 700;
  width: 22em;
}
.qualify td {
  text-align: right;
  white-space: nowrap;
}

.policy {
  background: var(--paper);
  border-left: 6px solid var(--navy);
  padding: 26px 28px;
}
.policy p {
  margin: 0 0 14px;
}
.policy p:last-child {
  margin-bottom: 0;
}

.works-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-cap);
}
.works-table th,
.works-table td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}
.works-table thead th {
  background: var(--navy);
  color: #fff;
  font-size: var(--fs-cap);
  white-space: nowrap;
}
.works-table tbody th {
  background: var(--paper);
  font-weight: 700;
  white-space: nowrap;
}

.awards-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.awards-list > li {
  border: 1px solid var(--line);
  background: #fff;
  padding: 22px 24px;
  margin-bottom: 16px;
}
.awards-list .y {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  font-size: var(--fs-note);
  font-weight: 700;
  padding: 4px 12px;
  margin-bottom: 10px;
  letter-spacing: 0.06em;
}
.awards-list h3 {
  margin: 0 0 6px;
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--navy-ink);
}
.awards-list p {
  margin: 0;
  font-size: var(--fs-cap);
  color: var(--text-mute);
}

.note-box {
  background: var(--paper);
  border: 1px dashed var(--line);
  padding: 20px 22px;
  font-size: var(--fs-cap);
  color: var(--text-mute);
  line-height: 1.9;
}
.note-box p {
  margin: 0 0 8px;
}
.note-box p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   タブレット
   ========================================================================== */
@media (max-width: 900px) {
  .works3,
  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .creds {
    grid-template-columns: minmax(0, 1fr);
  }
  .access {
    grid-template-columns: minmax(0, 1fr);
  }
  .award {
    grid-template-columns: minmax(0, 1fr);
  }
  .figures ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ==========================================================================
   スマートフォン
   ========================================================================== */
@media (max-width: 767px) {
  :root {
    --fs-h2: 26px;
    --fs-h1: 30px;
    --fs-h3: 21px;
  }

  .wrap {
    width: calc(100% - 32px);
  }

  .head-top {
    padding: 12px 0;
  }
  .head-tel {
    display: none;
  }
  .brand-name {
    font-size: 19px;
  }
  .brand-sub {
    display: none;
  }
  .brand .mark {
    width: 22px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    appearance: none;
    background: #fff;
    color: var(--navy-ink);
    border: 1px solid var(--line);
    border-radius: 3px;
    font-family: inherit;
    font-size: var(--fs-cap);
    font-weight: 700;
    padding: 9px 14px;
    cursor: pointer;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }
  .nav-toggle .bars {
    display: inline-block;
    width: 18px;
  }
  .nav-toggle .bars i {
    display: block;
    height: 2px;
    background: var(--navy-ink);
    margin: 4px 0;
  }

  .head-nav {
    display: none;
    border-top: 1px solid var(--line);
  }
  .head-nav.is-open {
    display: block;
  }
  .head-nav ul {
    flex-direction: column;
    gap: 0;
    padding-bottom: 8px;
  }
  .head-nav li {
    border-bottom: 1px solid var(--line);
  }
  .head-nav li:last-child {
    border-bottom: 0;
  }
  .head-nav a {
    padding: 15px 4px;
  }

  .hero-inner {
    padding: 54px 0 74px;
  }
  .hero-dots {
    right: 16px;
    bottom: 14px;
  }
  .hero-dots button {
    width: 30px;
  }
  .hero-lead {
    font-size: var(--fs-body);
  }

  /* 電話ボタンは「ラベル小・番号大」の2段にして、途中で折れないようにする */
  .hero-cta .btn-tel,
  .contact-lines .btn-tel {
    flex-direction: column;
    gap: 2px;
    padding: 14px 20px;
    font-size: var(--fs-cap);
  }
  .hero-cta .btn-tel .n,
  .contact-lines .btn-tel .n {
    font-size: 26px;
    white-space: nowrap;
  }
  .btn {
    width: 100%;
    justify-content: center;
  }

  .sec {
    padding: 54px 0;
  }
  .works3,
  .gallery {
    grid-template-columns: minmax(0, 1fr);
  }
  .figures .v {
    font-size: 25px;
  }

  .ba-tabs {
    grid-template-columns: minmax(0, 1fr);
  }
  .ba-tabs button {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
  }
  .ba-tabs button:last-child {
    border-bottom: 0;
  }
  .ba-stage {
    padding: 26px 20px;
  }
  .ba-panel .num b {
    font-size: 36px;
  }

  .award .tx {
    padding: 26px 22px;
  }
  .contact-box {
    padding: 34px 20px;
  }
  .info-table th,
  .info-table td {
    display: block;
    width: auto;
    padding: 6px 0;
    border-bottom: 0;
  }
  .info-table th {
    padding-top: 14px;
  }
  .info-table tr {
    display: block;
    border-bottom: 1px solid var(--line);
    padding-bottom: 10px;
  }
  .qualify th {
    width: auto;
  }
  .history li {
    grid-template-columns: minmax(0, 1fr);
  }

  .telbar {
    display: block;
  }
  .site-foot {
    padding-bottom: 96px;
  }
}

@media (min-width: 768px) {
  .site-foot {
    padding-bottom: 46px;
  }
}

/* ==========================================================================
   打ち消しの整理（下層ページの見出し規則が問い合わせ枠に効かないようにする）
   ========================================================================== */
.contact-box h2,
.block .contact-box h2 {
  color: #fff;
  border-left: 0;
  padding-left: 0;
  margin: 0 0 10px;
}

/* 濃紺の上の小さな緑文字は読みにくいので、暗い背景では明るい緑にする */
.sec-navy .ba-tabs .step {
  color: #86c2a3;
}
.ba-tabs button[aria-selected="true"] .step {
  color: var(--green-deep);
}

.page-catch {
  margin: 10px 0 0;
  font-size: var(--fs-lead);
  color: #dfe5f2;
}

/* ==========================================================================
   施工実績の中の「受賞」と「事例」を、ひと目で別物と分かるようにする
   ========================================================================== */
.sub-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 22px;
  font-size: var(--fs-h3);
  line-height: 1.4;
  color: var(--navy-ink);
}
.sub-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.sub-head .mk {
  flex: none;
  font-size: var(--fs-cap);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 2px;
  color: #fff;
}
.sub-award .mk {
  background: var(--navy-deep);
}
.sub-photo .mk {
  background: #8a6e4b;
}
.sub-head + .award,
.sub-head + .gallery {
  margin-top: 0;
}
/* 受賞の枠と写真の並びの間を、はっきり空ける */
.sub-photo {
  margin-top: 60px;
}

/* ==========================================================================
   お問い合わせページ（コーポレートサイトの標準的な形）
   本文幅を絞り、ラベル左・入力右の2列にする
   ========================================================================== */
.wrap.narrow {
  width: min(100% - 40px, 820px);
}

.contact-intro {
  margin: 0 0 46px;
}

/* 電話の枠：数字は大きすぎず、行の中で目立たせる */
.tel-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 5px solid var(--navy);
  padding: 24px 28px 22px;
}
.tel-main {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 18px;
}
.tel-label {
  font-size: var(--fs-cap);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-mute);
}
.tel-num {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--navy-deep);
  text-decoration: none;
}
.tel-fax {
  font-size: var(--fs-body);
  color: var(--text-mute);
}
.tel-note {
  margin: 12px 0 0;
  font-size: var(--fs-cap);
  color: var(--text-mute);
}

/* フォーム：ラベル左・入力右 */
.cform {
  border-top: 1px solid var(--line);
}
.cform .row {
  display: grid;
  grid-template-columns: 15em minmax(0, 1fr);
  gap: 8px 26px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.cform .lb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
}
.cform label {
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--navy-ink);
}
.cform .req,
.cform .opt {
  flex: none;
  display: inline-block;
  min-width: 3.4em;
  text-align: center;
  font-size: var(--fs-note);
  font-weight: 700;
  color: #fff;
  background: #a4443a;
  padding: 3px 8px;
  border-radius: 2px;
}
.cform .opt {
  background: #8b8578;
}
.cform input,
.cform select,
.cform textarea {
  font-family: inherit;
  font-size: var(--fs-body);
  line-height: 1.6;
  padding: 11px 13px;
  border: 1px solid #b9b2a6;
  border-radius: 3px;
  background: #fff;
  color: var(--text);
  width: 100%;
}
.cform .w-s {
  max-width: 14em;
}
.cform .w-m {
  max-width: 20em;
}
.cform textarea {
  resize: vertical;
}
.cform input:focus,
.cform select:focus,
.cform textarea:focus {
  outline: 3px solid rgba(70, 88, 127, 0.35);
  outline-offset: 1px;
  border-color: var(--navy);
}
.cform .hint {
  margin: 8px 0 0;
  font-size: var(--fs-cap);
  color: var(--text-mute);
}

.form-foot {
  margin-top: 34px;
  text-align: center;
}
.btn-solid {
  background: var(--navy);
  color: #fff;
  border: 0;
  font-family: inherit;
  min-width: 260px;
  justify-content: center;
  cursor: pointer;
}
.btn-solid:disabled {
  background: #6a7284;
  cursor: not-allowed;
}
.form-foot-note {
  margin: 12px 0 0;
  font-size: var(--fs-cap);
  color: var(--text-mute);
}

.fax-line {
  margin: 16px 0 0;
  font-size: var(--fs-body);
  color: #dde3ef;
}

@media (max-width: 767px) {
  .sub-head {
    font-size: 20px;
    gap: 10px;
  }
  .sub-photo {
    margin-top: 46px;
  }
  .tel-panel {
    padding: 20px 18px 18px;
  }
  .tel-num {
    font-size: 26px;
  }
  .cform .row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 18px 0;
  }
  .cform .lb {
    padding-top: 0;
  }
  .cform .w-s,
  .cform .w-m {
    max-width: none;
  }
  .btn-solid {
    width: 100%;
    min-width: 0;
  }
}

/* 下層ページの h2 にも、受賞／事例の区別を付ける */
.h2mk {
  display: inline-block;
  vertical-align: 3px;
  margin-right: 12px;
  font-size: var(--fs-cap);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 13px;
  border-radius: 2px;
  color: #fff;
}
.h2-award {
  background: var(--navy-deep);
}
.h2-photo {
  background: #8a6e4b;
}

/* ==========================================================================
   施工写真：マウスを乗せるとゆっくり寄り、押すと拡大して見られる
   ========================================================================== */
.gallery figure {
  overflow: hidden;
}
.ph-btn {
  display: block;
  position: relative;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
  overflow: hidden;
  line-height: 0;
}
.ph-btn img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition:
    transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1),
    filter 0.4s ease;
}
.ph-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(34, 44, 65, 0);
  transition: background 0.4s ease;
}
.ph-zoom {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 2;
  font-size: var(--fs-note);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  color: #fff;
  background: rgba(34, 44, 65, 0.86);
  padding: 8px 12px;
  border-radius: 2px;
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}
.ph-btn:hover img,
.ph-btn:focus-visible img {
  transform: scale(1.07);
}
.ph-btn:hover::after,
.ph-btn:focus-visible::after {
  background: rgba(34, 44, 65, 0.22);
}
.ph-btn:hover .ph-zoom,
.ph-btn:focus-visible .ph-zoom {
  opacity: 1;
  transform: translateY(0);
}
.ph-btn:focus-visible {
  outline: 3px solid var(--navy);
  outline-offset: 2px;
}

/* 拡大表示 */
.lightbox[hidden] {
  display: none;
}
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(18, 23, 34, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 20px;
  gap: 14px;
}
.lightbox img {
  max-width: min(1100px, 100%);
  max-height: calc(100vh - 190px);
  width: auto;
  object-fit: contain;
  background: #000;
}
.lightbox .lb-cap {
  color: #fff;
  font-size: var(--fs-body);
  font-weight: 700;
  margin: 0;
  text-align: center;
}
.lightbox .lb-close,
.lightbox .lb-prev,
.lightbox .lb-next {
  position: absolute;
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  font-family: inherit;
  font-size: var(--fs-cap);
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 11px 16px;
  border-radius: 2px;
  cursor: pointer;
}
.lightbox .lb-close {
  top: 18px;
  right: 18px;
}
.lightbox .lb-prev {
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
}
.lightbox .lb-next {
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
}
.lightbox .lb-close:hover,
.lightbox .lb-prev:hover,
.lightbox .lb-next:hover {
  background: rgba(255, 255, 255, 0.16);
}

@media (max-width: 767px) {
  /* 指で触る画面では、常に「拡大」を出しておく */
  .ph-zoom {
    opacity: 1;
    transform: none;
    right: 10px;
    bottom: 10px;
  }
  .lightbox {
    padding: 16px 12px;
    gap: 10px;
  }
  .lightbox img {
    max-height: calc(100vh - 210px);
  }
  .lightbox .lb-prev {
    left: 12px;
  }
  .lightbox .lb-next {
    right: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-photo img {
    transition: none;
  }
  .ph-btn img,
  .ph-btn::after,
  .ph-zoom {
    transition: none;
  }
  .ph-btn:hover img {
    transform: none;
  }
}