/* ================================================================
   Disseminate LP — styles.css (v2)
   元サイト(wordpress-theme)のトークンに統一:
   ダークネイビー×ゴールド / 見出しNoto Serif JP / 本文Noto Sans JP
   ================================================================ */

:root {
  /* --- 元サイト colors.css より --- */
  --primary-dark: #0a0f1c;
  --primary-navy: #0f1929;
  --secondary-dark: #1a2332;
  --accent-gold: #c9a961;
  --accent-gold-subtle: rgba(201, 169, 97, 0.08);
  --text-primary: #ffffff;
  --text-secondary: #a8b2c1;
  --text-muted: #6b7280;
  --border-color: rgba(168, 178, 193, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.03);
  /* --- 元サイト typography.css より --- */
  --font-heading: 'Noto Serif JP', serif;
  --font-body: 'Noto Sans JP', sans-serif;

  --maxw: 1120px;
  --maxw-narrow: 760px;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text-secondary);
  background: var(--primary-navy);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
h1, h2, h3, h4 {
  font-family: var(--font-heading); font-weight: 400; line-height: 1.35; color: var(--text-primary);
  line-break: strict; overflow-wrap: normal; word-break: auto-phrase; text-wrap: balance;
}
p, li, dd { line-break: strict; overflow-wrap: break-word; word-break: auto-phrase; }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-gold); text-decoration: none; }
section[id] { scroll-margin-top: 66px; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.container.narrow { max-width: var(--maxw-narrow); }

.section { padding: 72px 0; }
.section-label {
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent-gold); margin: 0 0 14px; font-weight: 500;
}
.section-label.center, .section-title.center { text-align: center; }
.section-title { font-size: 1.7rem; margin: 0 0 28px; color: var(--text-primary); }
.section-title.lg { font-size: 2.1rem; }
.section-title.center { margin-left: auto; margin-right: auto; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-block; padding: 15px 32px; border-radius: 999px;
  font-family: var(--font-body); font-weight: 500; font-size: 0.96rem; text-align: center;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  border: 1.5px solid transparent; cursor: pointer; letter-spacing: .02em;
  max-width: 100%; line-height: 1.5;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: rgba(255,255,255,.06); color: #fff; border-color: rgba(255,255,255,.25); }
.btn-primary:hover { background: rgba(255,255,255,.12); }
.btn-gold { background: var(--accent-gold); color: #14181f; }
.btn-gold:hover { background: #d8bd7f; }
.btn-outline { background: transparent; border-color: rgba(255,255,255,.3); color: #fff; }
.btn-outline:hover { border-color: var(--accent-gold); color: var(--accent-gold); }
.btn-outline-gold { background: transparent; border-color: var(--accent-gold); color: var(--accent-gold); }
.btn-outline-gold:hover { background: var(--accent-gold); color: #14181f; }
.btn-lg { padding: 18px 46px; font-size: 1.02rem; }

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,15,28,.72); backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--border-color);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 66px; }
.brand { font-family: var(--font-heading); font-weight: 500; font-size: 1.28rem; color: #fff; letter-spacing: .04em; }
.global-nav { display: none; margin-left: auto; gap: 28px; }
.global-nav a { color: var(--text-secondary); font-size: .9rem; font-weight: 400; }
.global-nav a:hover { color: var(--accent-gold); }
.btn-header { display: none; padding: 10px 22px; font-size: .85rem; }
.nav-toggle { margin-left: auto; width: 44px; height: 44px; border: 0; background: transparent;
  display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; transition: .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav { display: flex; flex-direction: column; padding: 6px 22px 16px; background: var(--primary-dark); border-bottom: 1px solid var(--border-color); }
/* 修正: hidden属性を効かせる（詳細度でdisplay:flexに勝たせ、ハンバーガー開閉を正常化） */
.mobile-nav[hidden] { display: none; }
.mobile-nav a { padding: 13px 4px; border-bottom: 1px solid var(--border-color); color: var(--text-secondary); }
.mobile-nav a:last-child { border-bottom: 0; }

/* ---------- S1 Hero（現サイト踏襲：全画面・ゴールド強調・微光） ---------- */
.hero { position: relative; color: #fff; overflow: hidden; background: var(--primary-dark);
  min-height: 88vh; display: flex; align-items: center; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(201,169,97,.16), transparent 60%),
    radial-gradient(820px 460px at -5% 108%, rgba(46,86,140,.30), transparent 58%),
    linear-gradient(160deg, #0a0f1c 0%, var(--primary-navy) 60%, #0b1526 100%);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 46px 46px; opacity: .6;
}
.hero-inner { position: relative; z-index: 1; padding: 88px 22px 96px; }
.eyebrow { letter-spacing: .24em; font-size: .72rem; font-weight: 500; color: var(--accent-gold); margin: 0 0 20px; }
.hero-title { font-size: clamp(2.25rem, 11vw, 2.6rem); line-height: 1.25; margin: 0 0 26px; color: #fff; font-weight: 300; }
.hero-title strong { color: var(--accent-gold); font-weight: 500; }
.hero-lead { font-size: 1.04rem; color: var(--text-secondary); margin: 0 0 38px; font-weight: 300; }
.hero-cta { display: flex; flex-direction: column; gap: 14px; }
.hero-cta .btn { width: 100%; }

/* ---------- セクション背景の交互 ---------- */
.problem { background: var(--primary-dark); }
.difference { background: var(--primary-navy); text-align: center; }
.demos { background: var(--primary-dark); }
.services { background: var(--primary-navy); }
.achievements { background: var(--primary-dark); }
.profile { background: var(--primary-navy); }
.cases { background: var(--primary-dark); }
.philosophy { background: var(--primary-navy); text-align: center; padding: 92px 0; }
.diagnosis-cta { background: var(--primary-dark); text-align: center; }

/* ---------- S2 課題（案A：アイコン付き3カード） ---------- */
.problem-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin: 0 0 34px; }
.problem-card {
  background: var(--glass-bg); border: 1px solid var(--border-color); border-radius: 16px;
  padding: 32px 22px; text-align: center;
}
.problem-ico {
  width: 52px; height: 52px; border-radius: 50%; border: 1px solid rgba(201,169,97,.5);
  color: var(--accent-gold); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.problem-ico svg { width: 24px; height: 24px; }
.problem-card p { margin: 0; color: var(--text-primary); font-weight: 400; font-size: 1rem; line-height: 1.75; }
.problem-bridge { font-size: 1.2rem; color: #fff; text-align: center; margin: 8px 0 0; font-family: var(--font-heading); line-height: 1.7; }

/* ---------- S3 違い ---------- */
.difference-body { font-size: 1.04rem; color: var(--text-secondary); margin: 0 0 16px; }
.difference-body.strong { color: #fff; }

/* ---------- S4 デモ ---------- */
.demos-head { text-align: center; margin-bottom: 42px; }
.demos-sub { color: var(--text-secondary); margin: 0; max-width: 620px; margin-inline: auto; }
.demo-grid { display: grid; grid-template-columns: 1fr; gap: 22px; }
.demo-card { background: var(--glass-bg); border: 1px solid var(--border-color); border-radius: 16px; padding: 16px; }
.demo-media { aspect-ratio: 16 / 9; background: #05080f url(img/demo-placeholder.svg) center/cover no-repeat; border-radius: 10px; overflow: hidden; margin-bottom: 16px; }
.demo-media video, .demo-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.demo-title { font-size: 1.12rem; margin: 0 0 12px; color: #fff; }
/* 工程図（3コマ: 届く → AIが処理 → 人は確認だけ）。動画完成後も併存可 */
.demo-flow { display: flex; flex-direction: column; align-items: stretch; gap: 18px; list-style: none; margin: 0 0 14px; padding: 0; }
.demo-flow li { flex: 1; position: relative; background: rgba(255,255,255,.04); border: 1px solid var(--border-color); border-radius: 8px; padding: 8px 6px; font-size: .76rem; line-height: 1.45; color: var(--text-secondary); text-align: center; display: flex; align-items: center; justify-content: center; }
.demo-flow li.ai { border-color: var(--accent-gold); color: #fff; background: rgba(201,169,97,.10); }
.demo-flow li + li::before { content: "↓"; position: absolute; left: 50%; top: -18px; transform: translateX(-50%); color: var(--accent-gold); font-size: .8rem; }
.ba { display: grid; gap: 8px; margin: 0 0 12px; }
.ba > div { display: grid; grid-template-columns: 64px 1fr; align-items: start; gap: 10px; }
.ba dt { font-size: .72rem; font-weight: 700; color: #cdd7e6; background: rgba(255,255,255,.08); border-radius: 4px; text-align: center; padding: 3px 0; font-family: var(--font-body); }
.ba div:last-child dt { color: #14181f; background: var(--accent-gold); }
.ba dd { margin: 0; font-size: .9rem; color: var(--text-secondary); }
.demo-closer { margin: 0; padding-top: 12px; border-top: 1px solid var(--border-color); color: var(--accent-gold); font-size: .94rem; }

/* ---------- S5 サービス（主=案C zig-zag / 従=案B パネル） ---------- */
.services-intro { text-align: center; color: var(--text-secondary); max-width: 640px; margin: 0 auto 44px; }
.figph {
  background: linear-gradient(135deg, rgba(201,169,97,.14), rgba(255,255,255,.02));
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); letter-spacing: .22em; font-size: .72rem;
}
.tag-sub {
  display: inline-block; font-size: .68rem; letter-spacing: .14em; color: var(--accent-gold);
  border: 1px solid var(--border-color); border-radius: 999px; padding: 3px 10px; margin-bottom: 12px;
}

/* 主: 交互フィーチャー行 */
.svc-feature {
  display: grid; grid-template-columns: 1fr; gap: 0; align-items: stretch;
  border: 1px solid var(--border-color); border-radius: 18px; overflow: hidden;
  margin-bottom: 22px; background: var(--glass-bg);
  transition: border-color .2s ease;
}
.svc-feature:hover { border-color: rgba(201,169,97,.4); }
.svc-fig { width: 100%; height: 100%; min-height: 0; aspect-ratio: 16 / 9; object-fit: cover; object-position: center; background-color: #0b1526; }
.svc-fbody { padding: 30px; }
.svc-title { color: #fff; font-size: 1.5rem; margin: 0 0 8px; }
.svc-lead { color: var(--accent-gold); font-size: .96rem; font-weight: 500; margin: 0 0 14px; font-family: var(--font-body); }
.svc-desc { color: var(--text-secondary); font-size: .96rem; margin: 0; }

/* 従: 小パネル2枚 */
.svc-panels { display: grid; grid-template-columns: 1fr; gap: 18px; margin-top: 24px; }
.svc-panel { background: var(--glass-bg); border: 1px solid var(--border-color); border-radius: 14px; padding: 24px; }
.svc-panel h3 { color: #fff; font-size: 1.1rem; margin: 0 0 8px; }
.svc-panel p { color: var(--text-secondary); font-size: .92rem; margin: 0; }

.services-cta { text-align: center; margin-top: 40px; }

/* ---------- S6 実績 ---------- */
.ach-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ach-item { background: var(--glass-bg); border: 1px solid var(--border-color); border-radius: 14px; padding: 28px 16px; text-align: center; }
.ach-figure { font-family: var(--font-heading); font-size: 1.5rem; color: var(--accent-gold); margin: 0 0 8px; line-height: 1.3; }
.ach-label { margin: 0; color: var(--text-secondary); font-size: .86rem; }

/* ---------- S7 プロフィール ---------- */
.profile-body p { color: var(--text-secondary); margin: 0 0 20px; }
.profile-name { text-align: right; font-family: var(--font-heading); color: #fff; font-size: 1.05rem; margin: 8px 0 0; }

/* ---------- S8 成功事例 ---------- */
.case-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
.case-card { background: var(--glass-bg); border: 1px solid var(--border-color); border-radius: 16px; padding: 26px 22px; display: flex; flex-direction: column; }
.case-card h3 { font-size: 1.04rem; color: #fff; margin: 0 0 14px; line-height: 1.6; }
.case-issue { color: var(--text-secondary); font-size: .9rem; margin: 0 0 10px; }
.case-result { color: var(--text-primary); font-size: .94rem; margin: 0 0 16px; }
.case-card .link-more { margin-top: auto; }
.link-more { color: var(--accent-gold); font-weight: 500; font-size: .9rem; }
.link-more:hover { text-decoration: underline; }
.cases-more { text-align: center; margin-top: 34px; }

/* ---------- S9 理念 ---------- */
.philosophy-body p { color: var(--text-secondary); margin: 0 0 18px; }

/* ---------- S10 診断CTA ---------- */
.diagnosis-lead { color: var(--text-secondary); margin: 0 0 30px; }
.sub-cta { margin: 18px 0 0; }
.sub-cta a { color: var(--text-secondary); font-size: .9rem; border-bottom: 1px solid var(--border-color); }
.sub-cta a:hover { color: var(--accent-gold); }

/* ---------- フッター ---------- */
.site-footer { background: #05080f; color: var(--text-muted); padding: 44px 0; border-top: 1px solid var(--border-color); }
.footer-brand { font-family: var(--font-heading); color: #fff; font-size: 1.1rem; letter-spacing: .04em; margin: 0 0 18px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 14px 22px; margin-bottom: 18px; }
.footer-nav a { color: var(--text-secondary); font-size: .88rem; }
.footer-nav a:hover { color: var(--accent-gold); }
.copyright { margin: 0; font-size: .8rem; color: var(--text-muted); }

/* ================================================================
   タブレット以上
   ================================================================ */
@media (min-width: 768px) {
  body { font-size: 17px; }
  .section { padding: 104px 0; }
  .section-title { font-size: 2.1rem; }
  .section-title.lg { font-size: 2.6rem; }

  .global-nav { display: flex; }
  .btn-header { display: inline-block; }
  .nav-toggle, .mobile-nav { display: none; }

  .hero-inner { padding: 132px 22px 138px; max-width: 840px; }
  .hero-title { font-size: 3.3rem; }
  .hero-lead { font-size: 1.2rem; }
  .hero-cta { flex-direction: row; }
  .hero-cta .btn { width: auto; }

  .problem-grid { grid-template-columns: repeat(3, 1fr); }
  .problem-bridge { font-size: 1.5rem; }

  .demo-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .demo-flow { flex-direction: row; gap: 14px; }
  .demo-flow li + li::before { content: "→"; left: -13px; top: 50%; transform: translateY(-50%); }

  .svc-feature { grid-template-columns: 6fr 6fr; }
  .svc-feature.rev .svc-fig { order: 2; }
  .svc-panels { grid-template-columns: 1fr 1fr; max-width: 940px; margin: 26px auto 0; }

  .ach-grid { grid-template-columns: repeat(4, 1fr); }
  .ach-figure { font-size: 1.7rem; }

  .case-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .hero-title { font-size: 3.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn:hover, .service-card:hover { transform: none; }
}