/* ============================================
   PIKA☆UNIA Landing Page — 2026 Q2 Free Trial
   Design: 余白優先 / 明朝セリフ×ゴシック / 実写前提
   ============================================ */

:root {
  --base: #F7F4EE;            /* オフホワイト・生成り */
  --surface: #FFFFFF;
  --ink: #1A1A1A;             /* 墨黒 */
  --ink-soft: #3F3F3F;
  --muted: #7A756C;
  --accent-deep: #8B1A1A;     /* 深紅 — 太陽・情熱 */
  --accent-gold: #B8860B;     /* 金 — 魂 */
  --line-green: #06C755;
  --border: #E5E0D5;
  --divider: rgba(26, 26, 26, 0.08);

  --font-serif: 'Shippori Mincho', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', sans-serif;

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--base);
  color: var(--ink);
  line-height: 1.8;
  font-feature-settings: "palt";
  padding-bottom: 76px; /* fixed CTA space */
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

.container { max-width: 900px; margin: 0 auto; padding: 0 24px; }
.section-heading {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 5.2vw, 38px);
  letter-spacing: 0.02em;
  line-height: 1.5;
  margin-bottom: 32px;
  text-align: center;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  color: var(--base);
}
.hero-media {
  position: absolute; inset: 0;
  z-index: 0;
}
.hero-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.55) 55%, rgba(0,0,0,0.8) 100%);
}
.hero-content {
  position: relative; z-index: 1;
  padding: 48px 24px 72px;
  text-align: center;
}
.hero-sub-top {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
  opacity: 0.85;
}
.hero-headline {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 7vw, 56px);
  letter-spacing: 0.02em;
  line-height: 1.45;
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.hero-sub {
  font-size: clamp(14px, 3.3vw, 17px);
  line-height: 1.9;
  margin-bottom: 32px;
  opacity: 0.95;
  font-feature-settings: "palt";
}
.hero-meta {
  margin-top: 20px;
  font-size: 11px;
  letter-spacing: 0.1em;
  opacity: 0.7;
}

/* ============ PHOTO SLOTS (実写差し替え想定) ============ */
.photo-slot {
  position: relative;
  width: 100%; height: 100%;
  background:
    linear-gradient(135deg, #2b1a1a 0%, #3f2418 40%, #6a4830 100%),
    radial-gradient(circle at 30% 30%, rgba(184, 134, 11, 0.3), transparent 50%);
  background-blend-mode: overlay;
  background-size: cover;
  background-position: center 25%;
  display: flex; align-items: center; justify-content: center;
}
.photo-slot.photo-hero { background-position: center 18%; }
.photo-slot.photo-origin { background-position: center 35%; }
.photo-slot::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 12px, rgba(255,255,255,0.02) 12px 24px);
}
.photo-slot-label {
  position: relative;
  color: rgba(247, 244, 238, 0.6);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-align: center;
  font-family: var(--font-sans);
  padding: 8px 14px;
  border: 1px dashed rgba(247, 244, 238, 0.35);
  border-radius: 2px;
}
.photo-origin {
  aspect-ratio: 4 / 5;
  background: linear-gradient(135deg, #1a1a1a 0%, #2e1f1a 50%, #4a2a1f 100%);
  border-radius: 4px;
}

/* ============ CTA ============ */
.cta-primary {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 10px;
  background: var(--line-green);
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.05em;
  padding: 18px 32px;
  border-radius: 999px;
  min-height: 52px;
  box-shadow: 0 4px 14px rgba(6, 199, 85, 0.35);
  transition: all 0.2s var(--ease);
}
.cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 199, 85, 0.45);
}
.cta-primary:active { transform: translateY(0); }
.cta-big {
  font-size: 18px;
  padding: 22px 44px;
  min-height: 64px;
}
.cta-secondary {
  display: inline-flex;
  align-items: center; justify-content: center;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.05em;
  padding: 14px 28px;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  min-height: 48px;
  transition: all 0.2s var(--ease);
}
.cta-secondary:hover { background: var(--ink); color: var(--base); }

.line-logo {
  background: rgba(255,255,255,0.25);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
  font-weight: 800;
}

/* ============ PROBLEM ============ */
.problem {
  padding: 96px 0;
  background: var(--base);
}
.pain-list {
  list-style: none;
  max-width: 640px;
  margin: 0 auto 40px;
}
.pain-list li {
  font-family: var(--font-serif);
  font-size: clamp(15px, 3.5vw, 19px);
  padding: 18px 0;
  border-bottom: 1px solid var(--divider);
  line-height: 1.9;
  position: relative;
  padding-left: 24px;
}
.pain-list li::before {
  content: "—";
  position: absolute; left: 0;
  color: var(--accent-deep);
  font-weight: 700;
}
.pain-close {
  font-family: var(--font-serif);
  text-align: center;
  font-size: clamp(16px, 3.8vw, 20px);
  line-height: 2;
  color: var(--ink-soft);
  margin-top: 48px;
  padding: 32px;
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}

/* ============ SOLUTION ============ */
.solution {
  padding: 96px 0;
  background: var(--surface);
  text-align: center;
}
.solution-lead {
  font-size: clamp(15px, 3.5vw, 17px);
  line-height: 2;
  max-width: 640px;
  margin: 0 auto 56px;
  color: var(--ink-soft);
}
.layer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}
.layer {
  padding: 28px 20px;
  background: var(--base);
  border-radius: 4px;
  text-align: left;
  position: relative;
  border-top: 2px solid var(--accent-gold);
  transition: transform 0.3s var(--ease);
}
.layer:hover { transform: translateY(-4px); }
.layer-num {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  color: var(--accent-deep);
  display: block;
  margin-bottom: 8px;
}
.layer h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
}
.layer p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ ORIGIN ============ */
.origin {
  padding: 96px 0;
  background: linear-gradient(180deg, var(--surface) 0%, var(--base) 100%);
}
.origin-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
@media (min-width: 768px) {
  .origin-wrap { grid-template-columns: 5fr 6fr; gap: 64px; }
}
.origin-media { max-width: 400px; margin: 0 auto; width: 100%; }
.origin-label {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent-deep);
  margin-bottom: 16px;
}
.origin-text .section-heading { text-align: left; margin-bottom: 24px; }
.origin-text p {
  font-size: 15px;
  line-height: 2;
  margin-bottom: 20px;
  color: var(--ink-soft);
}
.origin-quote {
  font-family: var(--font-serif) !important;
  font-size: clamp(20px, 4vw, 26px) !important;
  font-weight: 600;
  color: var(--ink) !important;
  padding: 20px 24px;
  border-left: 3px solid var(--accent-deep);
  margin: 24px 0 !important;
  line-height: 1.7 !important;
}

/* ============ PROOF ============ */
.proof {
  padding: 96px 0;
  background: var(--ink);
  color: var(--base);
}
.proof .section-heading { color: var(--base); }
.proof-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 720px;
  margin: 48px auto 0;
}
@media (min-width: 640px) {
  .proof-grid { grid-template-columns: repeat(4, 1fr); }
}
.proof-grid li {
  text-align: center;
  padding: 24px 12px;
  border-top: 1px solid rgba(247,244,238,0.15);
}
.proof-num {
  font-family: var(--font-serif);
  font-size: clamp(36px, 7vw, 52px);
  font-weight: 600;
  display: block;
  color: var(--accent-gold);
  margin-bottom: 6px;
  line-height: 1;
}
.proof-num small { font-size: 0.5em; margin-left: 2px; }
.proof-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  opacity: 0.75;
}

/* ============ WHAT HAPPENS ============ */
.what-happens {
  padding: 96px 0;
  background: var(--base);
}
.timeline {
  list-style: none;
  max-width: 680px;
  margin: 0 auto;
  counter-reset: step;
}
.timeline li {
  padding: 28px 0 28px 0;
  border-bottom: 1px solid var(--divider);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 600px) {
  .timeline li { grid-template-columns: 1fr; gap: 4px; }
}
.timeline .time {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--accent-deep);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.timeline h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.timeline p { font-size: 14px; line-height: 1.8; color: var(--muted); }

/* ============ DATES ============ */
.dates {
  padding: 96px 0;
  background: var(--surface);
  text-align: center;
}
.dates-lead {
  font-size: 15px;
  line-height: 2;
  margin-bottom: 40px;
  color: var(--ink-soft);
}
.city-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 520px;
  margin: 0 auto 40px;
}
.city-card {
  background: var(--base);
  padding: 28px 20px;
  border-radius: 4px;
  border-top: 2px solid var(--accent-deep);
}
.city-card h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  margin-bottom: 10px;
}
.city-detail {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ CTA SECTION ============ */
.cta-section {
  padding: 96px 24px;
  background: linear-gradient(180deg, var(--accent-deep) 0%, #5a0f0f 100%);
  color: var(--base);
  text-align: center;
}
.cta-headline {
  font-family: var(--font-serif);
  font-size: clamp(26px, 5.5vw, 40px);
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 16px;
}
.cta-sub {
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-bottom: 36px;
  opacity: 0.9;
}
.cta-note {
  font-size: 11px;
  margin-top: 20px;
  opacity: 0.7;
  line-height: 1.8;
}
.form-fallback {
  margin-top: 48px;
  text-align: left;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}
.form-fallback summary {
  cursor: pointer;
  text-align: center;
  padding: 14px;
  font-size: 13px;
  opacity: 0.8;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.fallback-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
  padding: 24px;
  background: rgba(247,244,238,0.08);
  border-radius: 4px;
}
.fallback-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.05em;
}
.fallback-form input {
  padding: 14px;
  background: var(--base);
  color: var(--ink);
  border: none;
  border-radius: 4px;
  font: inherit;
  font-size: 15px;
  min-height: 48px;
}
.fallback-form .cta-secondary { color: var(--base); border-color: var(--base); margin-top: 8px; }
.fallback-form .cta-secondary:hover { background: var(--base); color: var(--accent-deep); }

/* ============ FAQ ============ */
.faq {
  padding: 96px 0;
  background: var(--base);
}
.faq details {
  border-bottom: 1px solid var(--divider);
  padding: 20px 0;
}
.faq summary {
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  padding: 8px 40px 8px 0;
  position: relative;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "＋";
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--accent-deep);
  transition: transform 0.2s;
}
.faq details[open] summary::after { content: "−"; }
.faq details p {
  padding: 12px 0 8px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ============ FOOTER ============ */
.footer {
  padding: 64px 24px 48px;
  background: var(--ink);
  color: var(--base);
  text-align: center;
}
.brand-mark {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  color: var(--accent-gold);
}
.tagline {
  font-family: var(--font-serif);
  font-size: 13px;
  opacity: 0.75;
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}
.copyright {
  font-size: 10px;
  letter-spacing: 0.15em;
  opacity: 0.5;
}

/* ============ FIXED CTA ============ */
.cta-fixed {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(26,26,26,0.95);
  backdrop-filter: blur(10px);
  padding: 12px 16px;
  text-align: center;
  z-index: 100;
  transform: translateY(110%);
  transition: transform 0.4s var(--ease);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.2);
}
.cta-fixed.visible { transform: translateY(0); }
.cta-fixed .cta-primary {
  width: 100%;
  max-width: 420px;
  padding: 14px 20px;
  font-size: 14px;
  min-height: 48px;
}

/* ============ ACCESSIBILITY ============ */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* Focus visible */
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 3px;
}