@charset "UTF-8";

/* ===============================
   幸栄設備 LP
   base  #F7F7F5 / navy #102A3A
   text  #222222 / accent #2D8FBD
   =============================== */

:root{
  --base:#F7F7F5;
  --navy:#102A3A;
  --navy-d:#0B1F2B;
  --text:#222222;
  --gray:#6B7178;
  --accent:#2D8FBD;
  --line:#DCDBD6;
  --line-dark:rgba(247,247,245,.22);
  --header-h:84px;
  --pad:min(6vw,80px);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h);-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--base);
  color:var(--text);
  font-family:"Zen Kaku Gothic New","Noto Sans JP",-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  font-size:16px;
  line-height:2;
  letter-spacing:.04em;
  font-feature-settings:"palt";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol,dl,dd{margin:0;padding:0;list-style:none;}
h1,h2,h3,p{margin:0;}
figure{margin:0;}

/* AI生成画像の「イメージ画像」表記 */
.img-note{
  position:absolute;right:10px;bottom:10px;z-index:3;
  padding:3px 9px;background:rgba(11,25,34,.62);color:#fff;
  font-family:"Noto Sans JP",sans-serif;font-size:11px;line-height:1.6;letter-spacing:.08em;
  pointer-events:none;
}

.container{width:100%;max-width:1180px;margin-inline:auto;padding-inline:var(--pad);}
.pc-br{display:inline;}
.sp-br{display:none;}

/* 見出し共通 */
.num{
  display:block;
  font-family:"Noto Sans JP",sans-serif;
  font-size:13px;font-weight:500;letter-spacing:.22em;
  color:var(--accent);line-height:1;
}

/* fade */
.fx{opacity:0;transform:translateY(14px);transition:opacity .9s ease,transform .9s ease;}
.fx.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){.fx{opacity:1;transform:none;transition:none;}}

/* ===============================
   01 ヘッダー
   =============================== */
.header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  height:var(--header-h);
  color:#fff;
  transition:background-color .4s ease,color .4s ease,border-color .4s ease;
  border-bottom:1px solid transparent;
}
.header.is-solid{
  background:var(--base);color:var(--text);
  border-bottom-color:var(--line);
}
.header__inner{
  height:100%;display:flex;align-items:center;gap:32px;
  padding-inline:var(--pad);
}
.logo{display:flex;align-items:center;gap:11px;}
.logo__mark{width:44px;height:44px;flex:0 0 auto;background:#fff;}
.logo__text{display:flex;flex-direction:column;justify-content:center;line-height:1.35;}
.logo__ja{font-size:21px;font-weight:700;letter-spacing:.12em;}
.logo__en{font-family:"Noto Sans JP",sans-serif;font-size:9.5px;font-weight:400;letter-spacing:.3em;opacity:.7;}

.gnav{margin-left:auto;display:flex;align-items:center;gap:40px;}
.gnav__list{display:flex;gap:30px;font-size:14px;letter-spacing:.06em;}
.gnav__list a{padding-block:6px;position:relative;}
.gnav__list a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .35s ease;
}
.gnav__list a:hover::after{transform:scaleX(1);}
.gnav__contact{display:flex;align-items:center;gap:26px;}
.gnav__tel{display:flex;flex-direction:column;line-height:1.3;}
.gnav__tel-num{font-family:"Noto Sans JP",sans-serif;font-size:21px;font-weight:700;letter-spacing:.02em;}
.gnav__tel-note{font-size:10.5px;letter-spacing:.14em;opacity:.75;}
.gnav__ig{display:flex;align-items:center;gap:7px;font-family:"Noto Sans JP",sans-serif;font-size:11.5px;letter-spacing:.06em;opacity:.85;}
.gnav__ig:hover{opacity:1;}

.menu-btn{display:none;}

/* ===============================
   02 ファーストビュー
   =============================== */
.hero{position:relative;min-height:100svh;color:#fff;overflow:hidden;}
.hero__media{position:absolute;inset:0;}
.hero__media img{width:100%;height:100%;object-fit:cover;object-position:62% 50%;}
.hero__media .img-note{right:16px;bottom:16px;}
.hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,25,34,.78) 0%,rgba(11,25,34,.55) 42%,rgba(11,25,34,.18) 78%);
}
.hero__body{
  position:relative;z-index:2;min-height:100svh;
  display:flex;align-items:flex-end;
  padding:var(--header-h) var(--pad) clamp(70px,10vh,120px);
}
.hero__inner{max-width:760px;}
.hero__copy{
  font-size:clamp(32px,5.2vw,62px);font-weight:700;line-height:1.5;letter-spacing:.04em;
  text-shadow:0 1px 26px rgba(0,0,0,.25);
}
.hero__lead{margin-top:28px;font-size:clamp(14px,1.25vw,17px);line-height:2.1;color:rgba(255,255,255,.92);}
.hero__cert{
  margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.28);
  display:inline-block;font-size:12px;letter-spacing:.1em;color:rgba(255,255,255,.8);
}
.hero__btns{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;}

/* ボタン */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:220px;height:60px;padding-inline:28px;
  font-size:14.5px;letter-spacing:.1em;
  border:1px solid transparent;transition:background-color .3s ease,color .3s ease,border-color .3s ease;
}
.btn--fill{background:var(--accent);color:#fff;}
.btn--fill:hover{background:#26789E;}
.btn--line{border-color:rgba(255,255,255,.55);color:#fff;}
.btn--line:hover{background:rgba(255,255,255,.12);}
.contact .btn--line{border-color:var(--navy);color:var(--navy);}
.contact .btn--line:hover{background:var(--navy);color:#fff;}
.btn--big{
  margin-top:26px;width:100%;max-width:420px;height:74px;
  background:#fff;color:var(--navy);font-size:17px;font-weight:700;letter-spacing:.14em;
}
.btn--big:hover{background:var(--accent);color:#fff;}

/* ===============================
   03 信頼情報
   =============================== */
.trust{border-bottom:1px solid var(--line);background:var(--base);}
.trust__list{
  max-width:1180px;margin-inline:auto;padding:26px var(--pad);
  display:flex;align-items:center;
}
.trust__list li{
  flex:1;word-break:keep-all;text-align:center;font-size:13px;line-height:1.7;letter-spacing:.04em;color:#3A4046;
  padding-inline:14px;border-left:1px solid var(--line);
}
.trust__list li:first-child{border-left:0;}

/* ===============================
   04 事業内容
   =============================== */
.service{padding-block:clamp(88px,11vw,150px) clamp(60px,8vw,110px);}
.sec-head{margin-bottom:clamp(56px,7vw,96px);}
.sec-head__title{
  font-size:clamp(23px,3.1vw,38px);font-weight:700;line-height:1.72;letter-spacing:.05em;
}
.sec-head__text{margin-top:26px;font-size:15px;line-height:2.15;color:#474C52;}

.service__item{
  display:grid;grid-template-columns:1fr 1fr;align-items:center;
  gap:clamp(36px,5vw,80px);
  padding-block:clamp(40px,5vw,64px);
  max-width:1440px;margin-inline:auto;
}
.service__item--rev .service__media{order:2;}
.service__media{position:relative;}
.service__media img{width:100%;aspect-ratio:7/5;object-fit:cover;}
/* 画像ごとの切り取り位置 */
.service__media img[src*="service-01"]{object-position:40% 60%;}
.service__media img[src*="service-02"]{object-position:50% 65%;}
.service__media img[src*="service-03"]{object-position:45% 50%;}
.works__item img[src*="work-01"]{object-position:50% 55%;}
.service__text{padding-inline:var(--pad);max-width:620px;}
.service__item--rev .service__text{margin-left:auto;}
.service__title{margin-top:16px;font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:.06em;line-height:1.6;}
.service__desc{margin-top:22px;font-size:15px;line-height:2.15;color:#474C52;}
.taglist{margin-top:34px;border-top:1px solid var(--line);padding-top:22px;}
.taglist dt{font-size:11.5px;letter-spacing:.18em;color:var(--gray);}
.taglist ul{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px 28px;}
.taglist li{font-size:14px;letter-spacing:.04em;position:relative;padding-left:14px;}
.taglist li::before{content:"";position:absolute;left:0;top:.95em;width:6px;height:1px;background:var(--accent);}

/* ===============================
   05 施工事例
   =============================== */
.works{padding-block:clamp(80px,10vw,140px);border-top:1px solid var(--line);}
.works__title{font-size:clamp(28px,3.6vw,44px);font-weight:700;letter-spacing:.08em;}
.works__grid{
  margin-top:clamp(40px,5vw,66px);
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.4vw,34px);
}
.works__item--lead{grid-column:1/-1;}
.works__media{position:relative;}
.works__item img{width:100%;height:100%;object-fit:cover;}
.works__item--lead img{aspect-ratio:16/9;}
.works__item:not(.works__item--lead) img{aspect-ratio:4/3;}
.works__item figcaption{
  margin-top:14px;padding-top:12px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:baseline;gap:12px;
}
.works__name{font-size:14.5px;letter-spacing:.04em;}
.works__item--lead .works__name{font-size:17px;}
.works__area{font-size:12px;letter-spacing:.08em;color:var(--gray);white-space:nowrap;}

.works__ig{
  margin-top:clamp(48px,6vw,80px);padding-top:30px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;
}
.works__ig p{font-size:14.5px;line-height:2;}
.works__ig-id{font-family:"Noto Sans JP",sans-serif;font-size:13px;letter-spacing:.08em;color:var(--gray);}
.link-arrow{
  font-size:14px;letter-spacing:.08em;border-bottom:1px solid var(--navy);padding-bottom:6px;
  transition:color .3s ease,border-color .3s ease;
}
.link-arrow::after{content:" →";}
.link-arrow:hover{color:var(--accent);border-color:var(--accent);}

/* ===============================
   06 幸栄設備について
   =============================== */
.about{background:#fff;}
.about__inner{
  max-width:1440px;margin-inline:auto;
  display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:clamp(36px,5vw,80px);
}
.about__text{padding:clamp(70px,9vw,130px) 0 clamp(70px,9vw,130px) var(--pad);max-width:660px;margin-left:auto;}
.about__title{font-size:clamp(25px,3.3vw,40px);font-weight:700;line-height:1.7;letter-spacing:.05em;}
.about__text p{margin-top:28px;font-size:15px;line-height:2.25;color:#474C52;}
.about__sign{
  margin-top:40px!important;padding-top:24px;border-top:1px solid var(--line);
  font-size:14px;letter-spacing:.08em;color:var(--text)!important;
}
.about__sign span{font-size:18px;font-weight:700;letter-spacing:.1em;}
.about__media{position:relative;}
.about__media img{width:100%;height:100%;aspect-ratio:4/5;object-fit:cover;object-position:45% 50%;}

/* ===============================
   07 安心
   =============================== */
.assure{padding-block:clamp(80px,10vw,130px);}
.assure__list{display:grid;grid-template-columns:repeat(4,1fr);}
.assure__list li{padding:0 clamp(14px,2vw,30px);border-left:1px solid var(--line);}
.assure__list li:first-child{border-left:0;padding-left:0;}
.assure__list .num{font-size:15px;letter-spacing:.2em;}
.assure__main{margin-top:20px;word-break:keep-all;overflow-wrap:break-word;font-size:clamp(13.5px,1.12vw,16px);font-weight:500;line-height:1.9;letter-spacing:.02em;}
.assure__sub{margin-top:12px;font-size:12.5px;letter-spacing:.08em;color:var(--gray);}

/* ===============================
   08 水漏れ・つまり
   =============================== */
.trouble{background:var(--navy);color:#fff;padding-block:clamp(74px,9vw,120px);}
.trouble__inner{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(40px,5vw,80px);align-items:center;}
.trouble__title{font-size:clamp(22px,2.9vw,35px);font-weight:700;line-height:1.72;letter-spacing:.05em;}
.trouble__tags{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px 12px;}
.trouble__tags li{
  border:1px solid var(--line-dark);padding:6px 16px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.88);
}
.trouble__right{border-left:1px solid var(--line-dark);padding-left:clamp(28px,4vw,60px);}
.trouble__label{font-family:"Noto Sans JP",sans-serif;font-size:11px;letter-spacing:.3em;color:rgba(255,255,255,.6);}
.trouble__tel{
  display:block;margin-top:8px;
  font-family:"Noto Sans JP",sans-serif;font-size:clamp(34px,4.4vw,54px);font-weight:700;letter-spacing:.01em;line-height:1.2;
}
.trouble__note{margin-top:10px;font-size:12.5px;letter-spacing:.1em;color:rgba(255,255,255,.7);}

/* ===============================
   09 会社情報
   =============================== */
.company{border-top:1px solid var(--line);}
.company__inner{
  max-width:1440px;margin-inline:auto;
  display:grid;grid-template-columns:1fr 1fr;
}
.company__info{padding:clamp(70px,9vw,120px) clamp(40px,5vw,80px) clamp(70px,9vw,120px) var(--pad);max-width:680px;margin-left:auto;width:100%;}
.company__title{font-size:clamp(22px,2.5vw,30px);font-weight:700;letter-spacing:.08em;}
.company__dl{margin-top:36px;border-top:1px solid var(--line);}
.company__dl dt{
  float:left;width:112px;padding:20px 0;font-size:12.5px;letter-spacing:.14em;color:var(--gray);
}
.company__dl dd{
  padding:20px 0 20px 112px;border-bottom:1px solid var(--line);
  font-size:15px;line-height:1.9;letter-spacing:.04em;
}
.company__dl dd a{border-bottom:1px solid var(--line);transition:color .3s;}
.company__dl dd a:hover{color:var(--accent);}
.company__note{font-size:12.5px;color:var(--gray);letter-spacing:.06em;}
.company__map{min-height:420px;background:#E8E8E4;}
.company__map iframe{width:100%;height:100%;min-height:420px;border:0;display:block;filter:grayscale(.35) contrast(1.02);}

/* ===============================
   10 最終お問い合わせ
   =============================== */
.contact{padding-block:clamp(84px,10vw,140px);border-top:1px solid var(--line);}
.contact__title{font-size:clamp(25px,3.4vw,42px);font-weight:700;line-height:1.7;letter-spacing:.05em;}
.contact__lead{margin-top:26px;font-size:15px;line-height:2.15;color:#474C52;}
.contact__tel{
  display:inline-block;margin-top:44px;
  font-family:"Noto Sans JP",sans-serif;font-size:clamp(36px,5vw,62px);font-weight:700;letter-spacing:.01em;line-height:1.15;
  color:var(--navy);
}
.contact__note{margin-top:10px;font-size:12.5px;letter-spacing:.1em;color:var(--gray);}
.contact__btns{margin-top:38px;display:flex;flex-wrap:wrap;gap:14px;}

/* ===============================
   フッター
   =============================== */
.footer{background:var(--navy);color:#fff;padding-top:clamp(56px,6vw,80px);}
.footer__inner{display:flex;justify-content:space-between;gap:34px;flex-wrap:wrap;padding-bottom:clamp(44px,5vw,64px);}
.footer__brand{display:flex;align-items:center;gap:14px;}
.footer__brand .logo__mark{width:56px;height:56px;}
.footer__brand .logo__ja{display:block;font-size:21px;font-weight:700;letter-spacing:.12em;}
.footer__brand .logo__en{display:block;margin-top:5px;font-family:"Noto Sans JP",sans-serif;font-size:9px;letter-spacing:.28em;opacity:.65;}
.footer__info p{font-size:13.5px;line-height:2.1;color:rgba(255,255,255,.85);}
.footer__info a{border-bottom:1px solid var(--line-dark);}
.copyright{
  border-top:1px solid var(--line-dark);padding:20px var(--pad);
  font-family:"Noto Sans JP",sans-serif;font-size:11px;letter-spacing:.1em;color:rgba(255,255,255,.55);text-align:center;
}

/* ===============================
   スマホ固定バー
   =============================== */
.fixbar{display:none;}

/* ===============================
   タブレット
   =============================== */
@media (max-width:1100px){
  :root{--header-h:72px;}
  .gnav__list{gap:22px;font-size:13px;}
  .gnav__contact{gap:18px;}
  .gnav__tel-num{font-size:18px;}
  .gnav__ig-id{display:none;}
}

/* ===============================
   スマホ
   =============================== */
@media (max-width:820px){
  :root{--header-h:62px;--pad:22px;}
  body{font-size:15px;}
  .pc-br{display:none;}
  .sp-br{display:inline;}

  /* header */
  .header{background:rgba(16,42,58,.0);}
  .header.is-solid{background:var(--base);}
  .header__inner{gap:12px;}
  .logo__ja{font-size:17px;}
  .logo__en{font-size:8px;letter-spacing:.24em;}
  .logo{gap:9px;}
  .logo__mark{width:36px;height:36px;}
  .menu-btn{
    display:flex;align-items:center;gap:8px;margin-left:auto;
    background:none;border:0;color:inherit;font:inherit;cursor:pointer;padding:8px 0;
  }
  .menu-btn__bars{display:block;width:22px;}
  .menu-btn__bars i{display:block;height:1px;background:currentColor;transition:transform .3s ease,opacity .3s ease;}
  .menu-btn__bars i+i{margin-top:6px;}
  .menu-btn__label{font-family:"Noto Sans JP",sans-serif;font-size:11px;letter-spacing:.16em;}
  .is-open .menu-btn__bars i:first-child{transform:translateY(3.5px) rotate(15deg);}
  .is-open .menu-btn__bars i:last-child{transform:translateY(-3.5px) rotate(-15deg);}

  .gnav{
    position:fixed;inset:0;margin:0;z-index:-1;
    background:var(--navy);color:#fff;
    flex-direction:column;justify-content:center;align-items:flex-start;gap:0;
    padding:var(--header-h) 34px 34px;
    opacity:0;visibility:hidden;transition:opacity .35s ease,visibility .35s ease;
  }
  .gnav.is-open{opacity:1;visibility:visible;z-index:90;}
  .logo,.menu-btn{position:relative;z-index:95;}
  .is-open .header,.is-open .header.is-solid{background:transparent;border-bottom-color:transparent;color:#fff;}
  .gnav__list{flex-direction:column;gap:0;width:100%;font-size:17px;}
  .gnav__list li{border-bottom:1px solid var(--line-dark);}
  .gnav__list li:first-child{border-top:1px solid var(--line-dark);}
  .gnav__list a{display:block;padding:20px 2px;}
  .gnav__list a::after{display:none;}
  .gnav__contact{flex-direction:column;align-items:flex-start;gap:20px;margin-top:40px;}
  .gnav__tel-num{font-size:28px;}
  .gnav__tel-note{font-size:11px;}
  .gnav__ig-id{display:inline;font-size:12px;}

  /* hero */
  .hero__media::after{background:linear-gradient(180deg,rgba(11,25,34,.55) 0%,rgba(11,25,34,.35) 40%,rgba(11,25,34,.85) 100%);}
  .hero__body{padding-bottom:86px;}
  /* スマホ：画像を縦に拡大して上へずらし、床の配管を見出しと下部ボタンの間に見せる */
  .hero__media img{position:absolute;left:0;top:-35%;height:135%;object-position:88% 50%;}
  .hero__media .img-note{top:calc(var(--header-h) + 8px);bottom:auto;right:12px;}
  .img-note{right:8px;bottom:8px;font-size:10.5px;padding:2px 8px;}
  .hero__copy{font-size:clamp(25px,6.8vw,34px);line-height:1.62;letter-spacing:.02em;}
  .hero__lead{margin-top:22px;font-size:14px;line-height:2;}
  .hero__cert{font-size:11.5px;letter-spacing:.06em;}
  .hero__btns{gap:10px;}
  .btn{min-width:0;width:100%;height:56px;font-size:14px;}

  /* trust */
  .trust__list{flex-wrap:wrap;padding-block:0;}
  .trust__list li{
    flex:0 0 50%;padding:18px 10px;border-left:0;font-size:12px;
    border-top:1px solid var(--line);
  }
  .trust__list li:nth-child(odd){border-right:1px solid var(--line);}
  .trust__list li:nth-child(-n+2){border-top:0;}

  /* service */
  .service__item,.service__item--rev .service__media{display:block;order:0;}
  .service__item{padding-block:0 56px;}
  .service__text{padding-inline:var(--pad);margin-top:28px;}
  .service__media img{aspect-ratio:3/2;}
  .taglist ul{gap:8px 20px;}
  .taglist li{font-size:13.5px;}

  /* works */
  .works__grid{grid-template-columns:1fr;gap:34px;}
  .works__item--lead img{aspect-ratio:3/2;}
  .works__item--lead .works__name{font-size:15px;}
  .works__ig{flex-direction:column;align-items:flex-start;gap:18px;}

  /* about */
  .about__inner{display:block;}
  .about__text{padding:64px var(--pad) 44px;max-width:none;}
  .about__media img{aspect-ratio:4/3;}
  .about{padding-bottom:0;}

  /* assure */
  .assure__list{grid-template-columns:1fr;}
  .assure__list li{
    padding:26px 0;border-left:0;border-top:1px solid var(--line);
    display:grid;grid-template-columns:52px 1fr;align-items:baseline;gap:4px 10px;
  }
  .assure__list li:first-child{padding-left:0;}
  .assure__main{margin-top:0;}
  .assure__sub{grid-column:2;margin-top:8px;}

  /* trouble */
  .trouble__inner{display:block;}
  .trouble__right{border-left:0;padding-left:0;margin-top:44px;padding-top:34px;border-top:1px solid var(--line-dark);}
  .btn--big{max-width:none;height:66px;}

  /* company */
  .company__inner{display:block;}
  .company__info{padding:64px var(--pad) 48px;max-width:none;}
  .company__dl dt{width:92px;padding:16px 0;font-size:11.5px;}
  .company__dl dd{padding:16px 0 16px 92px;font-size:14.5px;}
  .company__map,.company__map iframe{min-height:300px;}

  /* contact */
  .contact__tel{margin-top:34px;}
  .contact__btns{flex-direction:column;}

  /* footer */
  .footer{padding-bottom:76px;}
  .footer__inner{flex-direction:column;gap:26px;}
  .copyright{padding-bottom:calc(20px + env(safe-area-inset-bottom));}

  /* fixbar */
  .fixbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:95;
    background:var(--navy);border-top:1px solid var(--line-dark);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .fixbar__tel{
    flex:1;display:flex;align-items:center;justify-content:center;
    height:58px;background:var(--accent);color:#fff;
    font-size:15.5px;font-weight:700;letter-spacing:.14em;
  }
  .fixbar__ig{
    flex:0 0 62px;display:flex;align-items:center;justify-content:center;
    height:58px;color:rgba(255,255,255,.85);
  }
  .is-open .fixbar{display:none;}
}

@media (max-width:380px){
  .gnav__tel-num{font-size:25px;}
  .company__dl dt{float:none;width:auto;padding-bottom:0;}
  .company__dl dd{padding-left:0;padding-top:6px;}
}