@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;600;700&display=swap");

:root {
  color-scheme: only light;
  --black: #191b18;
  --stone: #e8e3d8;
  --white: #f9f8f4;
  --red: #b44132;
  --gray: #687069;
  --serif: "Noto Serif JP", serif;
  --mono: "Noto Serif JP", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.8;
}

img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 提案専用注釈（上部） */
.proposal-note {
  padding: 12px 5%;
  background: #fdf6e8;
  border-bottom: 1px solid #e3d9c2;
  font-size: 13px;
  line-height: 1.7;
}

.proposal-note p {
  margin: 4px 0;
}

/* ヘッダー：上段ロゴ＋電話／下段ナビ */
.header {
  padding: 14px 5% 0;
  background: var(--white);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--black);
  text-decoration: none;
}

.logo span {
  padding: 6px 8px;
  background: var(--red);
  color: #fff;
  font: 700 13px/1.35 var(--serif);
  letter-spacing: 0.1em;
}

.logo b {
  font-size: 20px;
}

.tel {
  color: var(--black);
  text-decoration: none;
  font-size: 22px;
  font-weight: 700;
  text-align: right;
}

.tel small {
  display: block;
  color: var(--red);
  font-size: 12px;
  font-weight: 400;
}

.header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 25px;
  padding: 10px 0 12px;
  border-top: 1px solid #ddd8cc;
  margin-top: 12px;
}

.header nav a {
  color: #455047;
  text-decoration: none;
  font-size: 18px;
}

/* ヒーロー */
.hero {
  display: grid;
  grid-template-columns: 1.13fr 0.87fr;
  min-height: 630px;
  background: var(--black);
  color: #fff;
}

.hero-photo {
  min-height: 500px;
  position: relative;
}

.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 55%, var(--black));
}

.hero-photo-caption {
  position: absolute;
  left: 14px;
  bottom: 10px;
  z-index: 1;
  margin: 0;
  padding: 3px 10px;
  background: rgba(25, 27, 24, 0.65);
  color: #fff;
  font-size: 13px;
}

.hero-copy {
  padding: 98px 10% 70px 6%;
  position: relative;
  z-index: 1;
}

.kicker {
  margin: 0 0 15px;
  color: var(--red);
  font: 700 17px var(--serif);
  letter-spacing: 0.15em;
}

.hero h1 {
  font-size: clamp(2.45rem, 4.35vw, 4.7rem);
  line-height: 1.33;
  letter-spacing: 0.04em;
  margin: 0;
}

/* 見出しの1文字泣き別れ防止：意味のまとまり単位で改行させる */
h1 span,
h2 span {
  display: inline-block;
}

.hero-copy > p:not(.kicker) {
  margin: 25px 0 35px;
  color: #d8ddd6;
  font-size: 18px;
}

.hero-copy a {
  display: inline-flex;
  gap: 26px;
  color: #fff;
  border-bottom: 1px solid var(--red);
  padding-bottom: 8px;
  text-decoration: none;
  font-size: 18px;
}

/* お知らせ帯 */
.notice {
  display: flex;
  align-items: center;
  gap: 26px;
  padding: 16px 8%;
  background: var(--stone);
  font-size: 18px;
}

.notice span {
  color: var(--red);
  font: 700 16px var(--serif);
  letter-spacing: 0.12em;
}

.notice p {
  margin: 0;
}

.notice a {
  margin-left: auto;
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--black);
  font-size: 16px;
  white-space: nowrap;
}

.wrap {
  max-width: 1180px;
  margin: auto;
  padding-left: 5%;
  padding-right: 5%;
}

/* 施工例 */
.works {
  padding-top: 118px;
  padding-bottom: 118px;
}

.title-row {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 60px;
}

.title-row h2,
.services h2,
.price h2,
.company h2,
.contact h2 {
  margin: 0;
  font-size: clamp(1.85rem, 3.3vw, 3.5rem);
  line-height: 1.42;
  letter-spacing: 0.04em;
}

.title-row > p {
  margin: 0;
  color: var(--gray);
  font-size: 16px;
}

.case-large {
  display: grid;
  grid-template-columns: 28% minmax(0, 1fr);
  gap: 38px;
  padding-top: 20px;
  border-top: 1px solid #b4b7b0;
}

.case-caption {
  padding-top: 10px;
}

.case-no {
  margin: 0 0 18px;
  color: var(--red);
  font: 13px var(--mono);
}

h3 {
  margin: 0;
  font-size: 1.4rem;
}

.case-caption > p:last-child,
.case-small p {
  color: #5c665f;
  font-size: 16px;
}

.case-photos {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.case-photos figure {
  margin: 0;
  position: relative;
  height: 430px;
}

.case-photos figcaption {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 10px;
  background: #fff;
  color: #333;
  font: 700 14px var(--serif);
  letter-spacing: 0.08em;
}

.case-small {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 55px;
  margin: 83px 8% 0;
  background: #ece9e1;
}

.case-small-image {
  min-height: 330px;
}

.case-small > div:last-child {
  padding: 42px 10% 25px 0;
}

.mini-photos {
  display: flex;
  gap: 9px;
  margin-top: 23px;
}

.mini-photos img {
  width: 100px;
  height: 110px;
}

/* 業務内容 */
.services {
  padding: 100px 0;
  background: var(--black);
  color: #fff;
}

.services h2 {
  margin-bottom: 50px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid #525850;
}

.service-grid article {
  min-height: 236px;
  padding: 21px 18px;
  border-left: 1px solid #525850;
}

.service-grid article:last-child {
  border-right: 1px solid #525850;
}

.service-grid span {
  color: var(--red);
  font: 13px var(--mono);
}

.service-grid h3 {
  margin: 35px 0 11px;
  font-size: 1.15rem;
}

.service-grid p {
  margin: 0;
  color: #c8cec7;
  font-size: 16px;
}

/* 料金の目安 */
.price {
  padding-top: 110px;
  padding-bottom: 90px;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.price-grid article {
  background: #fff;
  border: 1px solid #ddd8cc;
  border-top: 3px solid var(--red);
  padding: 26px 24px 20px;
}

.price-grid h3 {
  font-size: 1.15rem;
  margin: 0 0 10px;
}

.price-num {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.4;
}

.price-num small {
  font-size: 16px;
  font-weight: 400;
  white-space: nowrap;
}

.price-grid article > p:last-child {
  margin: 0;
  color: #5c665f;
  font-size: 16px;
}

.price-note {
  margin: 22px 0 0;
  color: var(--gray);
  font-size: 15px;
}

/* 会社案内・お約束 */
.company {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10%;
  padding-top: 110px;
  padding-bottom: 110px;
}

.company > div:last-child {
  padding-top: 36px;
}

.company > div > p:not(.kicker) {
  margin: 0;
  color: #556059;
  font-size: 18px;
}

.promise-list {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.promise-list li {
  padding: 12px 0 12px 28px;
  border-bottom: 1px solid #c6c8c1;
  position: relative;
  font-size: 18px;
}

.promise-list li::before {
  content: "✓";
  position: absolute;
  left: 2px;
  color: var(--red);
}

.company dl {
  margin: 28px 0 0;
  border-top: 1px solid #c6c8c1;
  font-size: 16px;
}

.company dt {
  float: left;
  color: var(--red);
  padding: 11px 0;
}

.company dd {
  margin: 0;
  padding: 11px 0 11px 120px;
  border-bottom: 1px solid #c6c8c1;
}

.area {
  margin-top: 24px;
  font-size: 16px;
  color: #556059;
}

.area b {
  display: block;
  color: var(--red);
  font-size: 15px;
}

/* お問い合わせ */
.contact {
  padding: 82px 8%;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
  background: var(--red);
  color: #fff;
}

.contact .kicker {
  color: #1d1d1b;
}

.contact-note {
  margin: 20px 0 0;
  font-size: 16px;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-actions a {
  padding: 16px 22px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 18px;
  white-space: nowrap;
}

.contact-actions a span {
  margin-left: 20px;
}

/* スマホ固定電話バー */
.sp-call {
  display: none;
}

/* フッター */
footer {
  padding: 27px 5% 20px;
  background: var(--black);
  color: #fff;
  font-size: 15px;
}

footer p {
  margin: 6px 0;
}

.footer-note {
  color: #9da49c;
  font-size: 13px;
  border-top: 1px solid #3a3d38;
  padding-top: 12px;
  margin-top: 14px;
}

@media (max-width: 760px) {
  .header {
    padding: 12px 5% 0;
  }

  .header-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .tel {
    text-align: left;
  }

  .header nav {
    gap: 6px 18px;
  }

  .hero {
    display: flex;
    min-height: 650px;
    position: relative;
  }

  .hero-photo {
    position: absolute;
    inset: 0;
    opacity: 0.48;
  }

  .hero-photo::after {
    background: linear-gradient(0deg, var(--black), transparent);
  }

  .hero-photo-caption {
    display: none;
  }

  .hero-copy {
    padding: 86px 8% 45px;
    align-self: end;
  }

  .notice {
    display: block;
    padding: 18px 7%;
  }

  .notice p {
    margin: 6px 0;
  }

  .notice a {
    display: inline-block;
    margin-top: 5px;
  }

  .works {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .title-row {
    display: block;
    margin-bottom: 35px;
  }

  .title-row > p {
    margin-top: 17px;
  }

  .case-large {
    display: block;
  }

  .case-caption {
    margin-bottom: 22px;
  }

  .case-photos figure {
    height: 285px;
  }

  .case-small {
    display: block;
    margin: 55px 0 0;
  }

  .case-small-image {
    height: 265px;
    min-height: 0;
  }

  .case-small > div:last-child {
    padding: 30px;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-grid article {
    min-height: 0;
  }

  .service-grid article:nth-child(3),
  .service-grid article:nth-child(4) {
    border-top: 1px solid #525850;
  }

  .price {
    padding-top: 72px;
    padding-bottom: 60px;
  }

  .price-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .company {
    display: block;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .company > div:last-child {
    padding-top: 30px;
  }

  .company dd {
    padding-left: 110px;
  }

  .contact {
    display: block;
    padding: 65px 7%;
  }

  .contact-actions {
    margin-top: 30px;
  }

  .contact-actions a {
    display: block;
    text-align: center;
    white-space: normal;
  }

  .sp-call {
    display: block;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    padding: 14px 10px;
    background: var(--red);
    color: #fff;
    text-align: center;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
  }

  footer {
    padding-bottom: 80px;
  }
}