/* =========================================================================
   そらつづり — cloudpage 共通スタイル
   静かで繊細なUI（空の平均色／ガラスのオーブ）を Web に写し取る。
   ========================================================================= */

:root {
  /* 空のグラデーション（昼空→淡い地平の暖色） */
  --sky-top: #cfe1f3;
  --sky-mid: #e7f0f9;
  --sky-low: #fbf3ea;
  --sky-haze: #f6e7d6;

  /* インク（深い空色グレー） */
  --ink: #34404e;
  --ink-soft: #66748a;
  --ink-faint: #9aa6b6;

  /* 線・面 */
  --line: rgba(52, 64, 78, 0.10);
  --line-soft: rgba(52, 64, 78, 0.06);
  --glass: rgba(255, 255, 255, 0.55);
  --glass-strong: rgba(255, 255, 255, 0.72);
  --accent: #7ba7cf;
  --accent-deep: #5b89b6;

  --radius: 22px;
  --radius-sm: 14px;
  --maxw: 760px;
  --shadow-soft: 0 18px 50px -28px rgba(52, 64, 78, 0.45);
  --shadow-card: 0 10px 36px -24px rgba(52, 64, 78, 0.40);

  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Zen Kaku Gothic New", -apple-system, BlinkMacSystemFont,
          "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
          system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  line-height: 1.95;
  font-size: 16px;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: linear-gradient(180deg,
              var(--sky-top) 0%,
              var(--sky-mid) 34%,
              var(--sky-low) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

/* やわらかな光の粒（背景の奥行き） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 40% at 78% 8%, rgba(255, 255, 255, 0.65), transparent 70%),
    radial-gradient(50% 35% at 12% 4%, rgba(255, 255, 255, 0.40), transparent 70%);
  z-index: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 22px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}

.brand .orb {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background:
    radial-gradient(40% 35% at 32% 28%, rgba(255,255,255,0.95), transparent 60%),
    linear-gradient(150deg, #bcd6ef 0%, #9fc0e3 45%, #f5ddc6 100%);
  box-shadow: inset 0 -3px 8px rgba(91,137,182,0.35),
              0 4px 12px -4px rgba(52,64,78,0.5);
}

.brand .name {
  font-family: var(--serif);
  font-size: 1.18rem;
  letter-spacing: 0.18em;
  font-weight: 600;
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.25s ease, background 0.25s ease;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent-deep);
  background: var(--glass);
}

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 64px 24px 28px;
}

.hero .eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.42em;
  color: var(--ink-faint);
  margin: 0 0 22px;
  padding-left: 0.42em;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.6rem, 8vw, 4.2rem);
  letter-spacing: 0.22em;
  margin: 0;
  padding-left: 0.22em;
  line-height: 1.25;
}

.hero .reading {
  font-size: 0.9rem;
  letter-spacing: 0.5em;
  color: var(--ink-soft);
  margin: 14px 0 0;
  padding-left: 0.5em;
}

.hero .lede {
  max-width: 540px;
  margin: 30px auto 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 2.1;
}

/* 大きなガラスのオーブ */
.hero-orb {
  width: clamp(150px, 38vw, 200px);
  height: clamp(150px, 38vw, 200px);
  margin: 44px auto 8px;
  border-radius: 50%;
  position: relative;
  background:
    radial-gradient(38% 32% at 30% 26%, rgba(255,255,255,0.95), transparent 58%),
    radial-gradient(120% 120% at 70% 80%, rgba(245,221,198,0.85), transparent 60%),
    linear-gradient(155deg, #c3dbf2 0%, #9cbfe4 48%, #f3d9c4 100%);
  box-shadow:
    inset 0 -10px 26px rgba(91,137,182,0.35),
    inset 0 8px 18px rgba(255,255,255,0.6),
    0 30px 60px -30px rgba(52,64,78,0.55);
  animation: float 9s ease-in-out infinite;
}

.hero-orb::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.5);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- 空の片グリッド（連なりの可視化） ---------- */
.fragment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
  gap: 8px;
  max-width: 560px;
  margin: 46px auto 0;
}

.fragment {
  aspect-ratio: 1;
  border-radius: 8px;
  box-shadow: inset 0 1px 3px rgba(255,255,255,0.5),
              0 4px 10px -8px rgba(52,64,78,0.5);
}

.fragment.empty {
  background: rgba(255,255,255,0.28);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}

/* ---------- セクション ---------- */
.section {
  position: relative;
  z-index: 1;
  padding: 40px 0;
}

.section h2 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  margin: 0 0 8px;
}

.section .sub {
  color: var(--ink-faint);
  font-size: 0.82rem;
  letter-spacing: 0.32em;
  margin: 0 0 26px;
}

.feature-list {
  display: grid;
  gap: 16px;
}

.card {
  background: var(--glass);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow-card);
}

.card h3 {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card h3 .dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex: none;
  background: linear-gradient(150deg, #bcd6ef, #f3d9c4);
  box-shadow: inset 0 -2px 4px rgba(91,137,182,0.4);
}

.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

/* 値の強調列 */
.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.value {
  text-align: center;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: var(--radius-sm);
  padding: 22px 16px;
  box-shadow: var(--shadow-card);
}

.value .k {
  font-family: var(--serif);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  line-height: 1.5;
  word-break: keep-all;
  display: block;
}

.value .v {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  margin-top: 6px;
  display: block;
}

/* ---------- 文書ページ（プライバシー等） ---------- */
.doc {
  position: relative;
  z-index: 1;
  background: var(--glass-strong);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
  padding: clamp(28px, 5vw, 52px);
  margin: 12px 0 56px;
  box-shadow: var(--shadow-soft);
}

.doc .page-title {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: 0.14em;
  margin: 0 0 6px;
}

.doc .meta {
  color: var(--ink-faint);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  margin: 0 0 36px;
}

.doc h2 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 40px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.doc h2 .no {
  font-size: 0.78rem;
  color: var(--accent-deep);
  letter-spacing: 0.16em;
  font-family: var(--sans);
  flex: none;
}

.doc h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin: 24px 0 8px;
  color: var(--ink);
}

.doc p { margin: 0 0 14px; color: var(--ink-soft); }

.doc ul {
  margin: 0 0 16px;
  padding-left: 1.25em;
  color: var(--ink-soft);
}

.doc li { margin-bottom: 8px; }

.doc strong { color: var(--ink); font-weight: 600; }

.doc a { color: var(--accent-deep); text-underline-offset: 3px; }

.callout {
  background: rgba(123,167,207,0.10);
  border: 1px solid rgba(123,167,207,0.28);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 6px 0 26px;
  font-size: 0.95rem;
  color: var(--ink);
}

.callout strong { color: var(--accent-deep); }

/* ---------- 問い合わせフォーム ---------- */
.form-frame {
  width: 100%;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--glass-strong);
  box-shadow: var(--shadow-soft);
  margin-bottom: 56px;
}

.form-frame iframe {
  display: block;
  width: 100%;
  border: 0;
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  color: #fff;
  background: linear-gradient(150deg, var(--accent) 0%, var(--accent-deep) 100%);
  padding: 13px 26px;
  border-radius: 999px;
  box-shadow: 0 14px 30px -16px rgba(91,137,182,0.9);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -16px rgba(91,137,182,1); }

.btn.ghost {
  color: var(--accent-deep);
  background: var(--glass);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: var(--shadow-card);
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 36px;
}

/* ---------- フッター ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  margin-top: 24px;
  padding: 38px 24px 56px;
  text-align: center;
  color: var(--ink-faint);
}

.site-footer .foot-nav {
  display: flex;
  gap: 8px 22px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
}

.site-footer a:hover { color: var(--accent-deep); }

.site-footer .copy {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

/* ---------- 入場アニメーション ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 1s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}
.fade-up.d1 { animation-delay: 0.12s; }
.fade-up.d2 { animation-delay: 0.24s; }
.fade-up.d3 { animation-delay: 0.36s; }
.fade-up.d4 { animation-delay: 0.48s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .fade-up { opacity: 1; transform: none; }
}

@media (max-width: 540px) {
  body { font-size: 15px; }
  .hero { padding-top: 40px; }
  .nav a { padding: 6px 10px; }
}