@charset "UTF-8";
/* ==========================================================================
   DEAI ― 大人の婚活サービス
   Design tokens
   -------------------------------------------------------------------------
   Ink    #221F1A  基調の墨色（背景・見出し）
   Paper  #EDE3CC  和紙のような温かい生成り（背景）
   Brass  #A8762F  真鍮色（アクセント・CTA）
   Wine   #6B3541  深いワイン色（差し色・タグ）
   Paper文字(ink背景用) #D9CDAF
   ========================================================================== */

:root {
  --ink: #221F1A;
  --ink-soft: #4A4438;
  --paper: #EDE3CC;
  --paper-2: #E4D8BC;
  --paper-soft: #D9CDAF;
  --brass: #A8762F;
  --brass-light: #C79A52;
  --wine: #6B3541;
  --wine-light: #8A4F5C;
  --line: rgba(34, 31, 26, 0.14);
  --line-on-ink: rgba(217, 205, 175, 0.22);

  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;

  --container: 1120px;
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.85;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

/* ---------- Eyebrow / Label ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--brass);
  font-weight: 700;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--brass);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(237, 227, 204, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.08em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.logo small {
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--ink-soft);
  font-weight: 500;
}
.gnav {
  display: flex;
  align-items: center;
  gap: 40px;
}
.gnav ul { display: flex; gap: 36px; }
.gnav a {
  font-size: 14px;
  letter-spacing: 0.06em;
  position: relative;
  padding: 4px 0;
}
.gnav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.gnav a:hover::after,
.gnav a.is-current::after { transform: scaleX(1); }
.gnav a.is-current { color: var(--brass); }

.header-cta {
  font-size: 13px;
  letter-spacing: 0.08em;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 26px;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 0.25s ease;
}
.header-cta:hover { background: var(--wine); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 1px;
  background: var(--ink);
  transition: all 0.25s ease;
}

/* ---------- Hero (rings signature) ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  padding: 120px 0 140px;
}
.hero .rings {
  position: absolute;
  right: -180px;
  top: 50%;
  transform: translateY(-50%);
  width: 780px;
  height: 780px;
  opacity: 0.9;
}
.hero .rings circle {
  fill: none;
  stroke: var(--paper-soft);
  opacity: 0.16;
}
.hero .rings circle.ring-accent {
  stroke: var(--brass-light);
  opacity: 0.55;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 620px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 52px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.hero h1 em {
  font-style: normal;
  color: var(--brass-light);
}
.hero p.lead {
  font-size: 16px;
  color: var(--paper-soft);
  margin-bottom: 40px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 56px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 34px;
  font-size: 14px;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--brass);
  color: var(--ink);
  font-weight: 700;
}
.btn-primary:hover { background: var(--brass-light); }
.btn-ghost {
  border-color: var(--line-on-ink);
  color: var(--paper);
}
.btn-ghost:hover { border-color: var(--brass-light); color: var(--brass-light); }

.hero-facts {
  display: flex;
  gap: 44px;
  border-top: 1px solid var(--line-on-ink);
  padding-top: 28px;
}
.hero-facts .fact-num {
  font-family: var(--font-display);
  font-size: 30px;
  color: var(--brass-light);
  line-height: 1.2;
}
.hero-facts .fact-label {
  font-size: 12px;
  color: var(--paper-soft);
  margin-top: 6px;
  letter-spacing: 0.04em;
}
.hero-note {
  font-size: 11px;
  color: rgba(217,205,175,0.55);
  margin-top: 20px;
}

/* ---------- Section basics ---------- */
section { padding: 108px 0; }
.section-head {
  max-width: 620px;
  margin-bottom: 64px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: 34px;
  line-height: 1.6;
  letter-spacing: 0.03em;
}
.section-head p {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 15px;
}

.on-ink { background: var(--ink); color: var(--paper); }
.on-ink .section-head p { color: var(--paper-soft); }
.on-ink .eyebrow { color: var(--brass-light); }
.on-ink .eyebrow::before { background: var(--brass-light); }

/* ---------- Reason cards (3) ---------- */
.reasons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.reason-card {
  background: var(--paper);
  padding: 44px 36px;
}
.reason-ring {
  width: 56px;
  height: 56px;
  margin-bottom: 26px;
}
.reason-ring circle { fill: none; stroke: var(--brass); }
.reason-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  margin-bottom: 14px;
  line-height: 1.6;
}
.reason-card p { font-size: 14px; color: var(--ink-soft); }

/* ---------- Steps (numbered ring) ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
}
.step {
  position: relative;
  padding-top: 8px;
}
.step-ring {
  position: relative;
  width: 72px;
  height: 72px;
  margin-bottom: 24px;
}
.step-ring svg { width: 100%; height: 100%; }
.step-ring circle { fill: none; stroke: var(--brass); stroke-width: 1; }
.step-ring .num {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--brass);
}
.step h3 { font-family: var(--font-display); font-size: 19px; margin-bottom: 12px; }
.step p { font-size: 14px; color: var(--ink-soft); }

/* ---------- Support list ---------- */
.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-on-ink);
  border: 1px solid var(--line-on-ink);
}
.support-item {
  background: var(--ink);
  padding: 34px 38px;
  display: flex;
  gap: 22px;
}
.support-item .idx {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--brass-light);
  border: 1px solid var(--line-on-ink);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.support-item h3 { font-size: 16px; margin-bottom: 8px; letter-spacing: 0.03em; }
.support-item p { font-size: 13.5px; color: var(--paper-soft); }

/* ---------- Voice / testimonial cards ---------- */
.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.voice-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 36px 30px;
}
.voice-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: var(--wine);
  padding: 5px 12px;
  margin-bottom: 20px;
}
.voice-card p.quote {
  font-size: 14.5px;
  color: var(--ink);
  margin-bottom: 22px;
  min-height: 110px;
}
.voice-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

/* ---------- FAQ accordion ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 4px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
  font-size: 15.5px;
  color: var(--ink);
}
.faq-q .q-mark {
  font-family: var(--font-display);
  color: var(--brass);
  margin-right: 16px;
}
.faq-q .plus {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.faq-q .plus::before, .faq-q .plus::after {
  content: "";
  position: absolute;
  background: var(--ink);
  transition: transform 0.3s ease;
}
.faq-q .plus::before { top: 50%; left: 0; width: 100%; height: 1px; margin-top: -0.5px; }
.faq-q .plus::after { left: 50%; top: 0; height: 100%; width: 1px; margin-left: -0.5px; }
.faq-item.is-open .plus::after { transform: rotate(90deg); opacity: 0; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a-inner {
  padding: 0 4px 28px 40px;
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 640px;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--wine);
  color: var(--paper);
  text-align: center;
  padding: 96px 0;
}
.cta-band h2 {
  font-family: var(--font-display);
  font-size: 32px;
  margin-bottom: 20px;
  line-height: 1.7;
}
.cta-band p { color: var(--paper-soft); margin-bottom: 40px; }
.cta-band .btn-primary { background: var(--brass-light); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--paper-soft);
  padding: 64px 0 32px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line-on-ink);
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--paper);
  margin-bottom: 14px;
}
.footer-top .tag { font-size: 13px; max-width: 280px; }
.footer-cols { display: flex; gap: 64px; }
.footer-col h4 { font-size: 12px; letter-spacing: 0.1em; color: var(--brass-light); margin-bottom: 18px; }
.footer-col li { margin-bottom: 12px; font-size: 13.5px; }
.footer-col a:hover { color: var(--brass-light); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 28px;
  font-size: 12px;
  color: rgba(217,205,175,0.5);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Sub-page hero (compact) ---------- */
.page-hero {
  background: var(--ink);
  color: var(--paper);
  padding: 88px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero .rings-small {
  position: absolute;
  left: -120px;
  bottom: -160px;
  width: 420px;
  height: 420px;
  opacity: 0.4;
}
.page-hero .rings-small circle { fill: none; stroke: var(--paper-soft); }
.page-hero .breadcrumb {
  font-size: 12px;
  color: var(--paper-soft);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.page-hero .breadcrumb a:hover { color: var(--brass-light); }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: 38px;
  letter-spacing: 0.04em;
  max-width: 640px;
  position: relative;
  z-index: 2;
}
.page-hero .lead { margin-top: 18px; color: var(--paper-soft); max-width: 560px; position: relative; z-index: 2; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Pricing table (plans page) ---------- */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.plan-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 40px 32px;
  position: relative;
}
.plan-card.is-featured {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--brass);
}
.plan-card.is-featured .plan-desc { color: var(--paper-soft); }
.plan-badge {
  position: absolute;
  top: -1px; right: 24px;
  background: var(--brass);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 6px 14px;
}
.plan-name { font-family: var(--font-display); font-size: 20px; margin-bottom: 8px; }
.plan-desc { font-size: 13px; color: var(--ink-soft); margin-bottom: 26px; }
.plan-price { font-family: var(--font-display); font-size: 34px; margin-bottom: 4px; }
.plan-price span { font-size: 13px; font-family: var(--font-body); }
.plan-period { font-size: 12px; color: var(--ink-soft); margin-bottom: 28px; }
.plan-card.is-featured .plan-period { color: var(--paper-soft); }
.plan-features { margin-bottom: 32px; }
.plan-features li {
  font-size: 13.5px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 10px;
}
.plan-card.is-featured .plan-features li { border-top-color: var(--line-on-ink); }
.plan-features li .ck { color: var(--brass); }

/* ---------- Timeline (about page) ---------- */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--line);
}
.timeline-item { position: relative; padding-bottom: 52px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -40px; top: 4px;
  width: 15px; height: 15px;
  border-radius: 50%;
  border: 1px solid var(--brass);
  background: var(--paper);
}
.timeline-item h3 { font-family: var(--font-display); font-size: 18px; margin-bottom: 10px; }
.timeline-item p { font-size: 14px; color: var(--ink-soft); max-width: 560px; }

/* ---------- Two column (about) ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.stat-block { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 32px; }
.stat-block .n { font-family: var(--font-display); font-size: 30px; color: var(--brass); }
.stat-block .l { font-size: 12px; color: var(--ink-soft); margin-top: 6px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .reasons, .support-grid, .steps, .voice-grid, .plan-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 38px; }
  .hero .rings { width: 520px; height: 520px; right: -220px; }
  .gnav { display: none; }
  .nav-toggle { display: flex; }
  .footer-top, .footer-cols { flex-direction: column; }
  .footer-cols { gap: 32px; }
}
@media (max-width: 900px) {
  .gnav.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: var(--paper);
    padding: 28px 32px 36px;
    border-bottom: 1px solid var(--line);
  }
  .gnav.is-open ul { flex-direction: column; gap: 18px; }
}
@media (max-width: 560px) {
  .hero { padding: 80px 0 90px; }
  .hero h1 { font-size: 30px; }
  .hero-facts { flex-wrap: wrap; row-gap: 20px; }
  section { padding: 72px 0; }
  .section-head h2 { font-size: 26px; }
  .cta-band h2 { font-size: 24px; }
}