/* =========================================================
   株式会社オークジャパン  style.css
   Colors
     --ink    #1B1B1A  RGB(27,27,26)   墨（トップ・営業代行・お問い合わせ）
     --ink2   #111110  RGB(17,17,16)   フッター
     --ivory  #F6F5F0  RGB(246,245,240)
     --olive  #8A8565  RGB(138,133,101) 線
   ========================================================= */

:root {
  --ink: #1B1B1A;
  --ink2: #111110;
  --ivory: #F6F5F0;
  --white: #FFFFFF;
  --tint: #ECEAE2;
  --line: #E2E0D6;
  --line-dark: #3A3A37;
  --olive: #8A8565;
  --olive-text: #6B6749;
  --olive-light: #C9C4A6;
  --muted: #5E5C52;
  --muted-light: #CFCDC4;
  --hero-sub: #C9C7BC;

  --serif-en: 'Cormorant Garamond', serif;
  --serif-ja: 'Shippori Mincho', serif;
  --sans-en: 'Montserrat', sans-serif;
  --sans-ja: 'Noto Sans JP', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--sans-ja);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}

p, h1, h2, h3, ul, ol, dl, dd { margin: 0; }
a { color: var(--ink); }
a:hover { color: var(--olive-text); }
:focus-visible { outline: 2px solid var(--olive); outline-offset: 3px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header { background: var(--ink); color: var(--ivory); border-bottom: 1px solid var(--line-dark); }
.header-inner { padding-top: 22px; padding-bottom: 22px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.logo { color: var(--ivory); text-decoration: none; font-family: var(--serif-en); font-size: 22px; letter-spacing: 0.32em; }
.logo:hover { color: var(--ivory); }
.gnav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 32px; font-size: 13px; letter-spacing: 0.12em; }
.gnav a { color: var(--ivory); text-decoration: none; padding: 12px 0; }
.gnav a:hover { color: var(--olive-light); }
.gnav .gnav-cta { padding: 11px 22px; border: 1px solid var(--ivory); transition: background .2s, color .2s; }
.gnav .gnav-cta:hover { background: var(--ivory); color: var(--ink); }

/* ---------- Common ---------- */
.section { padding: clamp(80px, 10vw, 140px) 0; }
.section--flush-top { padding-top: 0; }
.section--tint { background: var(--tint); padding: clamp(80px, 10vw, 120px) 0; }
.section--white { background: var(--white); }
.section--dark { background: var(--ink); color: var(--ivory); }

.eyebrow { margin-bottom: 12px; font-family: var(--sans-en); font-size: 12px; letter-spacing: 0.3em; color: var(--olive-text); }
.eyebrow--light { color: var(--olive-light); }
.eyebrow--inline { margin-bottom: 0; }
.eyebrow--sm { font-size: 11px; letter-spacing: 0.25em; margin-bottom: 8px; }

.h2 { font-family: var(--serif-ja); font-weight: 500; font-size: 28px; letter-spacing: 0.1em; line-height: 1.6; }
.h2--spaced { margin-bottom: 32px; }
.h3 { font-family: var(--serif-ja); font-weight: 600; font-size: 26px; letter-spacing: 0.1em; }

.rule { width: 64px; height: 1px; background: var(--olive); margin: 40px 0; }

.split { display: flex; flex-wrap: wrap; gap: 48px 96px; }
.split-head { flex: 1 1 260px; }
.split-body { flex: 999 1 520px; min-width: 0; }

.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--ink); padding-bottom: 20px; margin-bottom: 56px; }

/* ---------- Hero ---------- */
.hero { background: var(--ink); color: var(--ivory); }
.hero-inner { padding-top: clamp(80px, 12vw, 160px); padding-bottom: clamp(80px, 10vw, 140px); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 48px; }
.hero-main { flex: 999 1 560px; min-width: 0; }
.hero .eyebrow { margin-bottom: 28px; color: var(--hero-sub); }
.hero-title { font-family: var(--serif-en); font-weight: 400; font-size: clamp(48px, 8vw, 104px); line-height: 1.05; letter-spacing: 0.2em; }
.hero-catch { margin-bottom: 20px; font-family: var(--serif-ja); font-weight: 500; font-size: clamp(26px, 3.4vw, 40px); line-height: 1.6; letter-spacing: 0.12em; }
.hero-lead { max-width: 560px; line-height: 2.1; color: var(--hero-sub); }
.hero-side { flex: 1 1 120px; display: flex; flex-direction: column; align-items: flex-end; gap: 24px; }
.hero-vertical { writing-mode: vertical-rl; font-family: var(--serif-ja); font-size: 15px; letter-spacing: 0.5em; color: var(--hero-sub); border-left: 1px solid var(--line-dark); padding-left: 20px; }
.hero-since { font-family: var(--sans-en); font-size: 11px; letter-spacing: 0.3em; color: var(--hero-sub); }

/* ---------- Concept ---------- */
.lead-serif { margin-bottom: 28px; font-family: var(--serif-ja); font-size: clamp(20px, 2.2vw, 26px); line-height: 1.9; letter-spacing: 0.08em; }
.body-text { max-width: 640px; line-height: 2.2; }

/* ---------- Service ---------- */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr)); gap: 40px; }
.service-card { background: var(--white); border: 1px solid var(--line); padding: clamp(32px, 4vw, 56px); display: flex; flex-direction: column; gap: 24px; }
.service-card p { line-height: 2.1; }
.service-num { display: flex; align-items: baseline; gap: 20px; }
.service-num .num { font-family: var(--serif-en); font-size: 48px; line-height: 1; color: var(--olive-text); }
.service-num .label { font-family: var(--sans-en); font-size: 11px; letter-spacing: 0.25em; color: var(--olive-text); }
.service-list { padding: 0; list-style: none; border-top: 1px solid var(--line); }
.service-list li { padding: 14px 0; border-bottom: 1px solid var(--line); }

.service-card--dark { background: var(--ink); color: var(--ivory); border-color: var(--ink); }
.service-card--dark .num, .service-card--dark .label { color: var(--olive-light); }
.service-card--dark .service-list, .service-card--dark .service-list li { border-color: var(--line-dark); }

/* ---------- Flow ---------- */
.flow { padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 32px; }
.flow li { border-top: 1px solid var(--olive); padding-top: 24px; }
.flow-step { margin-bottom: 8px; font-family: var(--sans-en); font-size: 11px; letter-spacing: 0.25em; color: var(--olive-text); }
.flow-title { margin-bottom: 12px; font-family: var(--serif-ja); font-weight: 600; font-size: 20px; letter-spacing: 0.08em; }
.flow-text { font-size: 14px; line-height: 2; }

/* ---------- Company ---------- */
.profile { border-top: 1px solid var(--ink); }
.profile > div { display: flex; flex-wrap: wrap; gap: 4px 32px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.profile dt { flex: 0 0 140px; color: var(--muted); font-size: 14px; }
.profile dd { flex: 1 1 300px; }
.profile .sub { font-size: 13px; color: var(--muted); }
.map { margin-top: 40px; height: 320px; background: var(--tint); }
.map iframe { display: block; width: 100%; height: 100%; border: 0; filter: grayscale(1) contrast(0.95); }

/* ---------- Contact ---------- */
.contact-inner { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 48px 96px; }
.contact-head { flex: 1 1 320px; }
.contact-text { line-height: 2.1; color: var(--muted-light); }
.contact-mail { flex: 999 1 480px; min-width: 0; border-top: 1px solid var(--line-dark); padding-top: 32px; }
.mail { font-family: var(--serif-en); font-size: clamp(32px, 4.4vw, 52px); letter-spacing: 0.08em; line-height: 1.3; overflow-wrap: anywhere; }
.mail a { color: var(--ivory); text-decoration: none; border-bottom: 1px solid var(--olive); transition: color .2s, border-color .2s; }
.mail a:hover { color: var(--olive-light); border-color: var(--olive-light); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink2); color: var(--muted-light); padding: 56px 0 40px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 32px; }
.footer-logo { margin-bottom: 16px; font-family: var(--serif-en); font-size: 24px; letter-spacing: 0.32em; color: var(--ivory); }
.footer-text { font-size: 13px; line-height: 2; }
.copyright { font-family: var(--sans-en); font-size: 11px; letter-spacing: 0.15em; }

/* ---------- Smartphone ---------- */
@media (max-width: 600px) {
  .gnav { gap: 4px 20px; }
  .hero-side { align-items: flex-start; }
  .hero-vertical { display: none; }
  .contact-text br, .hero-lead br { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}