/* ============================================================
 * Tres&Cy合同会社 — モダン・コーポレートサイト
 * テーマ：ダークネイビー/墨黒 × 金（ゴールド）／ゴシック・ミニマル
 * 業態：店舗プロデュース・空間ブランディング
 * ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Zen+Kaku+Gothic+New:wght@500;700;900&family=Zen+Kaku+Gothic+Antique:wght@400;500;700&display=swap');

:root {
  --c-ink: #0a0e18;
  --c-ink-2: #0f1422;
  --c-ink-3: #161c2e;
  --c-paper: #f6f7f9;
  --c-paper-2: #eceef2;
  --c-text: #232733;
  --c-text-mute: #767c8c;
  --c-line: rgba(255,255,255,.1);
  --c-line-dark: #e2e5ec;

  --c-gold: #c4a86a;
  --c-gold-2: #dcc48a;
  --c-gold-soft: rgba(196,168,106,.14);

  --head: 'Zen Kaku Gothic New', 'Zen Kaku Gothic Antique', sans-serif;
  --gothic: 'Zen Kaku Gothic Antique', sans-serif;
  --en: 'Inter', sans-serif;

  --container: 1140px;
  --header-h: 76px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--gothic);
  color: var(--c-text);
  background: var(--c-paper);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: opacity .25s, color .25s; }
a:hover { opacity: .65; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* 英語ラベル */
.eyebrow {
  font-family: var(--en); font-weight: 700; font-size: 12px;
  letter-spacing: .22em; text-transform: uppercase; color: var(--c-gold);
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--c-gold); display: inline-block; }

/* ============== Header ============== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h); display: flex; align-items: center;
  background: rgba(10,14,24,.6); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand {
  font-family: var(--en); font-weight: 800; font-size: 22px; color: #fff;
  letter-spacing: .02em; display: flex; align-items: baseline; gap: 10px;
}
.brand small { font-family: var(--en); font-weight: 500; font-size: 11px; color: var(--c-gold); letter-spacing: .16em; text-transform: uppercase; }
.nav { display: flex; gap: 36px; align-items: center; }
.nav a { color: rgba(255,255,255,.82); font-family: var(--en); font-weight: 600; font-size: 13px; letter-spacing: .1em; }
.nav a span { display: block; font-family: var(--gothic); font-weight: 400; font-size: 10px; letter-spacing: .08em; color: rgba(255,255,255,.45); text-align: center; margin-top: 2px; }
.nav a:hover { color: var(--c-gold); opacity: 1; }
.nav a.cta { border: 1px solid var(--c-gold); padding: 11px 24px; color: var(--c-gold); }
.nav a.cta:hover { background: var(--c-gold); color: var(--c-ink); opacity: 1; }

/* ============== Hero ============== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  background: linear-gradient(105deg, rgba(8,11,20,.92) 28%, rgba(8,11,20,.55) 70%, rgba(8,11,20,.4) 100%),
              linear-gradient(0deg, rgba(8,11,20,.55), rgba(8,11,20,.35)),
              url('./assets/hero-c.jpg');
  background-size: cover; background-position: center;
  color: #fff; position: relative; overflow: hidden; padding: var(--header-h) 0 0;
}
.hero .container { position: relative; z-index: 2; }
.hero h1 {
  font-family: var(--head); font-weight: 900; font-size: 64px; line-height: 1.3;
  letter-spacing: .01em; margin-bottom: 30px;
}
.hero h1 .gold { color: var(--c-gold-2); }
.hero h1 .thin { display:block; font-family: var(--head); font-weight: 500; font-size: 22px; letter-spacing: .06em; color: rgba(255,255,255,.66); margin-top: 22px; }
.hero .lead { font-size: 16px; color: rgba(255,255,255,.7); max-width: 600px; line-height: 2; margin-bottom: 44px; }
.hero .cta-row { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 17px 38px; font-family: var(--en); font-weight: 600; font-size: 14px; letter-spacing: .08em;
  cursor: pointer; border: none; transition: all .25s;
}
.btn-gold { background: var(--c-gold); color: var(--c-ink); }
.btn-gold:hover { background: var(--c-gold-2); opacity: 1; transform: translateY(-2px); }
.btn-line { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn-line:hover { border-color: var(--c-gold); color: var(--c-gold); opacity: 1; }
.btn-ink { background: var(--c-ink); color: #fff; }
.btn-ink:hover { background: var(--c-gold); color: var(--c-ink); opacity: 1; }

/* ============== Sections ============== */
.section { padding: 120px 0; }
.section.ink { background: var(--c-ink); color: #fff; }
.section.ink-2 { background: var(--c-ink-2); color: #fff; }
.section.paper-2 { background: var(--c-paper-2); }
.section-head { margin-bottom: 64px; }
.section-head.center { text-align: center; }
.section h2 {
  font-family: var(--head); font-weight: 900; font-size: 42px; letter-spacing: .01em;
  line-height: 1.45; color: var(--c-ink);
}
.section.ink h2, .section.ink-2 h2 { color: #fff; }
.section h2 .gold { color: var(--c-gold); }
.section .subtitle { font-size: 15.5px; color: var(--c-text-mute); margin-top: 22px; line-height: 2; max-width: 680px; }
.section-head.center .subtitle { margin-left: auto; margin-right: auto; }
.section.ink .subtitle, .section.ink-2 .subtitle { color: rgba(255,255,255,.6); }

.rule { width: 44px; height: 2px; background: var(--c-gold); margin: 22px 0; }
.section-head.center .rule { margin-left: auto; margin-right: auto; }

/* ============== Service grid ============== */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--c-line); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
@media(max-width:860px){ .grid-2,.grid-3 { grid-template-columns: 1fr; } }

.svc { background: var(--c-ink); padding: 50px 42px; position: relative; transition: background .35s; }
.section.ink-2 .svc { background: var(--c-ink-2); }
.svc:hover { background: var(--c-ink-3); }
.svc .no { font-family: var(--en); font-weight: 700; font-size: 14px; color: var(--c-gold); letter-spacing: .14em; }
.svc h3 { font-family: var(--head); font-weight: 700; font-size: 24px; color: #fff; margin: 14px 0 6px; letter-spacing: .01em; }
.svc h3 .en { display: block; font-family: var(--en); font-weight: 500; font-size: 12px; color: rgba(255,255,255,.4); letter-spacing: .1em; text-transform: uppercase; margin-top: 8px; }
.svc p { font-size: 14px; color: rgba(255,255,255,.66); margin-top: 16px; line-height: 1.95; }

.card { background: #fff; border: 1px solid var(--c-line-dark); padding: 42px 36px; transition: transform .3s, box-shadow .3s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(10,14,24,.1); }
.card .no { font-family: var(--en); font-weight: 700; color: var(--c-gold); letter-spacing: .12em; }
.card h3 { font-family: var(--head); font-weight: 700; font-size: 20px; color: var(--c-ink); margin: 12px 0 10px; }
.card p { font-size: 14px; color: var(--c-text); }

/* flow */
.flow { display: grid; gap: 0; }
.flow .step { display: grid; grid-template-columns: 80px 1fr; gap: 28px; padding: 34px 0; border-bottom: 1px solid var(--c-line-dark); }
.flow .step:first-child { border-top: 1px solid var(--c-line-dark); }
.flow .step .n { font-family: var(--en); font-weight: 800; font-size: 30px; color: var(--c-gold); }
.flow .step h3 { font-family: var(--head); font-weight: 700; font-size: 20px; color: var(--c-ink); margin-bottom: 6px; }
.flow .step p { font-size: 14px; color: var(--c-text-mute); }

/* ============== Info table ============== */
.info-table { width: 100%; border-collapse: collapse; }
.info-table th, .info-table td { text-align: left; padding: 24px 8px; border-bottom: 1px solid var(--c-line-dark); font-size: 15px; vertical-align: top; line-height: 1.9; }
.info-table th { width: 28%; font-family: var(--head); font-weight: 700; color: var(--c-ink); }
.info-table td { color: var(--c-text); }
@media(max-width:680px){ .info-table th { width: 36%; } }

/* job */
.job { border: 1px solid var(--c-line-dark); padding: 38px 42px; margin-bottom: 22px; background: #fff; }
.job .tag { font-family: var(--en); font-weight: 600; font-size: 12px; color: var(--c-gold); letter-spacing: .08em; text-transform: uppercase; }
.job h3 { font-family: var(--head); font-weight: 700; font-size: 23px; color: var(--c-ink); margin: 8px 0 22px; }
.job dl { display: grid; grid-template-columns: 130px 1fr; gap: 14px 20px; font-size: 14px; }
.job dt { font-family: var(--head); font-weight: 500; color: var(--c-text-mute); }
@media(max-width:680px){ .job dl { grid-template-columns: 100px 1fr; } }

/* ============== CTA ============== */
.cta { background: radial-gradient(130% 100% at 50% 0%, #1b2540 0%, #0a0e18 70%); color: #fff; text-align: center; padding: 110px 32px; }
.cta .eyebrow { color: var(--c-gold); justify-content: center; }
.cta h2 { font-family: var(--head); font-weight: 900; font-size: 38px; color: #fff; letter-spacing: .01em; line-height: 1.45; margin-bottom: 16px; }
.cta p { color: rgba(255,255,255,.66); font-size: 15.5px; margin-bottom: 38px; }

/* ============== Form ============== */
.form-grid { display: grid; gap: 24px; max-width: 660px; margin: 0 auto; }
.form-grid label { display: block; font-family: var(--head); font-weight: 700; font-size: 14px; color: var(--c-ink); margin-bottom: 10px; }
.form-grid input, .form-grid textarea, .form-grid select {
  width: 100%; padding: 15px 16px; border: 1px solid var(--c-line-dark); background: #fff;
  font-size: 16px; font-family: var(--gothic); color: var(--c-text);
}
.form-grid input:focus, .form-grid textarea:focus, .form-grid select:focus { outline: none; border-color: var(--c-gold); box-shadow: 0 0 0 3px var(--c-gold-soft); }
.form-grid textarea { min-height: 160px; resize: vertical; }
.form-note { font-size: 13px; color: var(--c-text-mute); }

/* ============== Page hero ============== */
.page-hero { background: linear-gradient(180deg, rgba(8,11,20,.78), rgba(8,11,20,.86)), url('./assets/p3.jpg'); background-size: cover; background-position: center; color: #fff; padding: calc(var(--header-h) + 86px) 0 86px; text-align: center; }
.page-hero h1 { font-family: var(--head); font-weight: 900; font-size: 44px; letter-spacing: .02em; }
.page-hero .en-sub { font-family: var(--en); font-weight: 600; color: var(--c-gold); letter-spacing: .2em; font-size: 13px; text-transform: uppercase; margin-top: 14px; }

/* ============== Footer ============== */
.site-footer { background: var(--c-ink); color: #fff; padding: 84px 0 36px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 52px; }
@media(max-width:860px){ .footer-grid { grid-template-columns: 1fr; gap: 34px; } }
.site-footer .brand { margin-bottom: 18px; }
.site-footer p { color: rgba(255,255,255,.55); font-size: 14px; line-height: 1.95; }
.site-footer h4 { font-family: var(--en); font-weight: 600; font-size: 13px; color: var(--c-gold); letter-spacing: .14em; text-transform: uppercase; margin-bottom: 20px; }
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 12px; }
.site-footer ul a { color: rgba(255,255,255,.72); font-size: 14px; }
.site-footer ul a:hover { color: var(--c-gold); opacity: 1; }
.copyright { border-top: 1px solid var(--c-line); padding-top: 28px; text-align: center; font-family: var(--en); font-size: 12px; letter-spacing: .08em; color: rgba(255,255,255,.4); }

/* ============== 画像ヘッダー（カード） ============== */
.svc .ph { height: 188px; margin: -50px -42px 26px; background-size: cover; background-position: center; filter: brightness(.82); transition: filter .35s; }
.svc:hover .ph { filter: brightness(1); }
.card .ph { height: 188px; margin: -42px -36px 26px; background-size: cover; background-position: center; }

/* ============== 画像バンド（全幅・パララックス風） ============== */
.imgband { height: 460px; background-size: cover; background-position: center; background-attachment: fixed; position: relative; display: flex; align-items: center; }
.imgband::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,11,20,.78) 0%, rgba(8,11,20,.45) 55%, rgba(8,11,20,.25) 100%); }
.imgband .container { position: relative; z-index: 2; color: #fff; }
.imgband .eyebrow { color: var(--c-gold); }
.imgband h2 { font-family: var(--head); font-weight: 900; font-size: 36px; color: #fff; line-height: 1.5; letter-spacing: .01em; }
.imgband p { color: rgba(255,255,255,.78); font-size: 15.5px; margin-top: 16px; max-width: 540px; }
@media(max-width:768px){ .imgband { background-attachment: scroll; height: 360px; } .imgband h2 { font-size: 26px; } }

/* ============== 2カラム（画像＋テキスト） ============== */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 0; align-items: stretch; }
.split .ph { min-height: 460px; background-size: cover; background-position: center; }
.split .txt { padding: 80px 64px; display: flex; flex-direction: column; justify-content: center; }
.split .txt h2 { font-family: var(--head); font-weight: 900; font-size: 34px; color: var(--c-ink); line-height: 1.5; letter-spacing: .01em; }
.split .txt h2 .gold { color: var(--c-gold); }
.split .txt p { color: var(--c-text-mute); font-size: 15.5px; margin-top: 18px; line-height: 2; }
@media(max-width:860px){ .split { grid-template-columns: 1fr; } .split .ph { min-height: 280px; } .split .txt { padding: 48px 28px; } .split .txt h2 { font-size: 26px; } }

/* ============== Responsive ============== */
@media (max-width: 768px) {
  .container { padding: 0 22px; }
  .hero h1 { font-size: 38px; }
  .hero h1 .thin { font-size: 16px; }
  .section { padding: 76px 0; }
  .section h2 { font-size: 28px; }
  .page-hero h1 { font-size: 30px; }
  .nav { gap: 14px; }
  .nav a:not(.cta) { display: none; }
}