/* obata-sekiyu 共通スタイル (assets/styles.css) */
:root{
  /* CI: ボトルグリーン #0d2f23 / アクセントゴールド #d4af37 */
  --bg: #0d2f23;
  --bg2: #0f3d2e;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.10);
  --text: #eaf5f2;
  --muted: rgba(234,245,242,.72);
  --line: rgba(255,255,255,.12);
  --accent: #d4af37;
  --accent2: #e5c65c;
  --shadow: 0 24px 60px rgba(0,0,0,.45);
  --radius: 18px;
  --container: 1100px;
  --font: ui-sans-serif, system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 600px at 10% -10%, rgba(212,175,55,.18), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(212,175,55,.12), transparent 55%),
    radial-gradient(700px 500px at 50% 120%, rgba(13,47,35,.6), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  line-height:1.7;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; text-underline-offset: 4px; }

.container{
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.hidden{ display:none; }
.small{ font-size: 12px; }
.muted{ color: var(--muted); }
.mt{ margin-top: 14px; }
.w-full{ width:100%; }
.br-md{ display:none; }

@media (min-width: 860px){
  .br-md{ display:inline; }
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header[data-stuck="1"]{
  background: rgba(13,47,35,.85);
  border-bottom-color: var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 14px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  text-decoration:none !important;
}
.brand-mark{
  width: 38px;
  height: 38px;
  display: block;
  border-radius: 12px;
  object-fit: contain;
}
.brand-mark:not(img){
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--bg);
  font-weight: 800;
  letter-spacing: .06em;
}
.brand-text{ display:flex; flex-direction:column; }
.brand-name{ font-weight: 700; font-size: 14px; }
.brand-tag{ font-size: 12px; color: var(--muted); }

.nav{
  display:none;
  align-items:center;
  gap: 18px;
  font-size: 14px;
}
.nav a{ color: rgba(234,245,242,.86); }
.nav a:hover{ color: var(--text); }

.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  gap: 5px;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
}
.nav-toggle span{
  width: 18px;
  height: 2px;
  background: rgba(234,245,242,.9);
  display:block;
  border-radius: 2px;
}

.mobile-nav{
  border-top: 1px solid var(--line);
  background: rgba(13,47,35,.92);
}
.mobile-nav-inner{
  padding: 14px 0 18px;
  display:grid;
  gap: 10px;
}
.mobile-nav a{
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
}

@media (min-width: 900px){
  .nav{ display:flex; }
  .nav-toggle{ display:none; }
  .mobile-nav{ display:none !important; }
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--bg);
  font-weight: 800;
  text-decoration:none !important;
  box-shadow: 0 14px 40px rgba(212,175,55,.25);
}
.btn:hover{ filter: brightness(1.03); }
.btn:active{ transform: translateY(1px); }
.btn-sm{ padding: 9px 12px; border-radius: 12px; font-size: 13px; }

.btn-ghost{
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-color: rgba(255,255,255,.14);
  box-shadow: none;
}
.btn-ghost:hover{ background: rgba(255,255,255,.06); }

.hero{
  --hero-bg: url("images/hero-sp.png");
  padding: 56px 0 0;
  position: relative;
  overflow: hidden;
  background-image: var(--hero-bg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero::before{
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(90deg, rgba(13,47,35,.88) 0%, rgba(13,47,35,.4) 55%, transparent 100%);
  pointer-events: none;
}
@media(min-width: 900px){
  .hero{ --hero-bg: url("images/hero.png"); }
}
.hero-inner{
  position: relative;
  z-index: 1;
  display:grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
  padding-bottom: 28px;
}

@media(min-width: 960px){
  .hero-inner{ grid-template-columns: 1.1fr .9fr; }
  .hero{ padding-top: 72px; }
}

.eyebrow{
  display:inline-flex;
  gap: 8px;
  align-items:center;
  font-weight: 800;
  letter-spacing: .10em;
  font-size: 12px;
  color: rgba(234,245,242,.9);
  margin: 0 0 10px;
}
.hero-title{
  margin: 0 0 10px;
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.hero-lead{
  margin: 0 0 18px;
  color: rgba(234,245,242,.82);
  font-size: 16px;
}
.hero-cta{ display:flex; gap: 12px; flex-wrap: wrap; }

.hero-badges{
  margin-top: 18px;
  display:grid;
  gap: 12px;
  grid-template-columns: 1fr;
}
@media(min-width: 540px){
  .hero-badges{ grid-template-columns: repeat(3, 1fr); }
}
.badge{
  padding: 12px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
}
.badge-k{ font-size: 12px; color: var(--muted); }
.badge-v{ font-weight: 800; margin-top: 2px; }

.hero-visual{
  position: relative;
  min-height: 300px;
}
.glass-card{
  position: relative;
  z-index: 2;
  padding: 18px 18px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.06));
  box-shadow: var(--shadow);
}
.glass-title{
  font-weight: 900;
  letter-spacing: .06em;
  margin-bottom: 12px;
}
.glass-list{
  margin: 0;
  padding-left: 18px;
  color: rgba(234,245,242,.84);
}
.orb{
  position:absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  filter: blur(28px);
  opacity: .8;
}
.orb-a{
  background: rgba(212,175,55,.35);
  left: -30px;
  top: -40px;
}
.orb-b{
  background: rgba(212,175,55,.25);
  right: -40px;
  bottom: -50px;
}

.hero-bottom{
  border-top: 1px solid rgba(255,255,255,.10);
  border-bottom: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.02);
}
.hero-bottom-inner{
  padding: 14px 0;
  display:grid;
  gap: 10px;
  grid-template-columns: 1fr;
}
@media(min-width: 860px){
  .hero-bottom-inner{ grid-template-columns: repeat(3, 1fr); }
}
.mini{
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}
.mini-k{ font-size: 12px; color: var(--muted); }
.mini-v{ font-weight: 800; margin-top: 2px; color: rgba(255,255,255,.95); }

.section{ padding: 64px 0; }
.section-alt{ background: rgba(255,255,255,.02); }
.section-contact{ padding-bottom: 84px; }

.section-head{
  margin-bottom: 22px;
}
.section-head h2{
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.01em;
}
.section-head p{
  margin: 6px 0 0;
  color: var(--muted);
}
.section-intro{
  max-width: 640px;
  margin: 0 0 28px;
  line-height: 1.75;
  color: rgba(234,245,242,.88);
}
.section-intro strong{ color: var(--text); font-weight: 800; }
.service-desc{
  font-size: 14px;
  line-height: 1.65;
  color: rgba(234,245,242,.82);
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
}
.service-desc strong{ color: var(--accent); font-weight: 800; }

.grid-2{
  display:grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
.grid-3{
  display:grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
@media(min-width: 900px){
  .grid-2{ grid-template-columns: repeat(2, 1fr); }
  .grid-3{ grid-template-columns: repeat(3, 1fr); }
}

.card{
  padding: 18px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  box-shadow: 0 10px 30px rgba(0,0,0,.20);
}
.card-hover{ transition: transform .18s ease, background .18s ease; }
.card-hover:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,.06);
}

.works-head{
  margin: 18px 0 10px;
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
}

.recruit-subhead{
  margin: 32px 0 16px;
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
}
.works-accordion{
  display: grid;
  gap: 0;
}
.works-item{
  border-bottom: 1px dashed var(--line);
}
.works-item:last-child{ border-bottom: none; }
.works-item[open]{ border-bottom-color: transparent; }
.works-summary{
  display: block;
  padding: 12px 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background .15s ease;
}
.works-summary::-webkit-details-marker{ display: none; }
.works-summary::marker{ content: none; }
.works-summary:hover{ background: rgba(255,255,255,.04); }
.works-summary::after{
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-left: 8px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .2s ease;
  vertical-align: middle;
}
.works-item[open] .works-summary::after{
  transform: rotate(-135deg) translateY(-2px);
}
.works-title{
  display: block;
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 2px;
  color: var(--text);
}
.works-phase{
  display: block;
  font-size: 12px;
  color: var(--muted);
}
.works-body{
  margin: 0 0 14px 0;
  padding: 0 0 14px 0;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(234,245,242,.86);
  border-bottom: 1px dashed var(--line);
}
.works-item[open] .works-body{ padding-bottom: 14px; }
.works-item:last-child .works-body{ border-bottom: none; }

.list{
  margin: 0;
  padding-left: 18px;
  color: rgba(234,245,242,.86);
}
.tags{
  margin-top: 12px;
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
}
.tags span{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: rgba(234,245,242,.86);
}

.callout{
  margin-top: 16px;
  padding: 18px 18px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(135deg, rgba(212,175,55,.18), rgba(212,175,55,.08));
  display:flex;
  gap: 14px;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}

.steps{
  margin: 0;
  padding: 0;
  list-style: none;
  display:grid;
  gap: 12px;
}
.step{
  display:grid;
  grid-template-columns: 54px 1fr;
  gap: 12px;
  padding: 16px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.step-n{
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display:grid;
  place-items:center;
  font-weight: 900;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}
.step-b h3{ margin: 2px 0 6px; }
.step-b p{ margin: 0; color: rgba(234,245,242,.82); }

.news{
  display:grid;
  gap: 10px;
}
.news-item{
  display:grid;
  grid-template-columns: 120px 1fr 24px;
  align-items:center;
  gap: 10px;
  padding: 14px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  text-decoration:none !important;
}
.news-item:hover{ background: rgba(255,255,255,.06); }
.news-date{ color: var(--muted); font-size: 13px; }
.news-title{ font-weight: 800; }
.news-arrow{ color: var(--muted); text-align:right; }

.dl{
  margin: 0;
  display:grid;
  gap: 10px;
}
.dl > div{
  display:grid;
  grid-template-columns: 120px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255,255,255,.12);
}
.dl dt{ color: var(--muted); font-size: 13px; }
.dl dd{ margin: 0; font-weight: 800; }

.field{
  display:grid;
  gap: 6px;
  margin-bottom: 12px;
}
.field span{ font-size: 13px; color: rgba(234,245,242,.86); font-weight: 700; }
.field input, .field textarea{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(10,14,24,.55);
  color: var(--text);
  outline: none;
}
.field input:focus, .field textarea:focus{
  border-color: rgba(212,175,55,.6);
  box-shadow: 0 0 0 4px rgba(212,175,55,.2);
}

.site-footer{
  border-top: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  padding: 26px 0;
}
.footer-inner{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
  flex-wrap:wrap;
}
.footer-right{
  display:flex;
  gap: 14px;
  color: rgba(234,245,242,.80);
}
.brand-footer .brand-mark{ width: 34px; height: 34px; border-radius: 12px; }

/* プライバシーポリシー本文 */
.policy-body h3{ margin: 24px 0 10px; font-size: 16px; }
.policy-body h3:first-of-type{ margin-top: 0; }
.policy-body p{ margin: 0 0 14px; line-height: 1.75; color: rgba(234,245,242,.88); }
.policy-body p:last-child{ margin-bottom: 0; }
.policy-updated{ font-size: 13px; color: var(--muted); margin-bottom: 20px !important; }