/* ============================================================
   レッスンノート サイト — アプリ本体の AppTheme に忠実に合わせる
   primary #2D5BFF / surface #F8F9FB / 白カード＋ヘアライン / 角丸 8·12·16·24
   ロゴ由来のグラデ（青→ティール）はブランドの一点にだけ使う
   ============================================================ */
:root {
  --primary: #2D5BFF;
  --primary-dark: #1A3DBF;
  --primary-weak: rgba(45, 91, 255, 0.10);
  --grad-a: #1E56C8;   /* ロゴの深い青 */
  --grad-b: #35C8D6;   /* ロゴのティール */
  --success: #34C759;  /* ✓ 伸びたところ */
  --accent: #FF6B35;   /* ↗ 改善ポイント */
  --recur: #9A7B12;    /* ⟳ 続いている課題 */
  --recur-bg: rgba(255, 204, 0, 0.16);

  --ink: #1A1C22;
  --ink-2: #4A4F5C;
  --ink-3: #878D9B;
  --bg: #F8F9FB;       /* AppTheme.surfaceLight */
  --card: #FFFFFF;
  --hair: rgba(20, 22, 28, 0.08);
  --hair-strong: rgba(20, 22, 28, 0.13);
  --shadow: 0 1px 2px rgba(20, 22, 28, 0.04), 0 12px 40px rgba(45, 91, 255, 0.08);
  --max: 1000px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --primary: #6B8AFF;             /* AppTheme.primaryLight */
    --primary-weak: rgba(107, 138, 255, 0.16);
    --success: #40D267;
    --accent: #FF8259;
    --recur: #F2C94C;
    --recur-bg: rgba(242, 201, 76, 0.14);
    --ink: #F2F3F5;
    --ink-2: #B7BCC7;
    --ink-3: #7E8494;
    --bg: #1C1C1E;                  /* AppTheme.surfaceDark */
    --card: #2C2C2E;                /* AppTheme.cardDark */
    --hair: rgba(255, 255, 255, 0.10);
    --hair-strong: rgba(255, 255, 255, 0.16);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 40px rgba(0, 0, 0, 0.42);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont,
    "Hiragino Sans", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--hair);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between; height: 62px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 16px; color: var(--ink);
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand img {
  width: 34px; height: 34px; border-radius: 9px;   /* アプリアイコンの佇まい */
  background: #fff; border: 1px solid var(--hair-strong);
}
.nav { display: flex; gap: 22px; font-size: 14px; }
.nav a { color: var(--ink-2); font-weight: 500; white-space: nowrap; }
.nav a:hover { color: var(--primary); text-decoration: none; }
/* 狭幅ではナビを畳む（同じリンクはフッターにある） */
@media (max-width: 560px) { .nav { display: none; } }

/* ---------- hero ---------- */
.hero { padding: 64px 0 24px; overflow: hidden; }
.hero .wrap {
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: 40px; align-items: center;
}
@media (max-width: 840px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { text-align: center; }
  .hero-copy .cta-row { justify-content: center; }
}
.hero-copy .eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .04em;
  color: var(--primary); background: var(--primary-weak);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.hero-copy h1 {
  font-size: clamp(28px, 4.6vw, 40px);
  font-weight: 900; line-height: 1.32; letter-spacing: .01em;
  margin: 0 0 18px;
}
.hero-copy h1 .grad {
  display: inline-block;   /* 「積み上がって」を語中で改行させない */
  background: linear-gradient(92deg, var(--grad-a), var(--grad-b));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
@media (prefers-color-scheme: dark) {
  .hero-copy h1 .grad {
    background: linear-gradient(92deg, #6B8AFF, #4FD8E4);
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
}
.hero-copy p.lead {
  font-size: clamp(15px, 2.2vw, 17px); color: var(--ink-2);
  margin: 0 0 26px; max-width: 30em;
}
@media (max-width: 840px) { .hero-copy p.lead { margin-inline: auto; } }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.store-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 14.5px;
  padding: 13px 22px; border-radius: 14px;
}
.store-badge.primary {
  background: linear-gradient(94deg, var(--grad-a), var(--grad-b));
  color: #fff; box-shadow: 0 6px 20px rgba(45, 91, 255, 0.30);
}
.store-badge.soon {
  background: var(--card); color: var(--ink-3);
  border: 1px solid var(--hair-strong); cursor: default;
}

/* ---------- 画面（実機のスクショ） ---------- */
.phone-wrap { display: grid; place-items: center; }
/* 実機のスクリーンショット（ストア用の画像から画面だけ切り出したもの） */
.shot {
  margin: 0; justify-self: center;
  width: min(300px, 78vw); aspect-ratio: 640 / 1393;
  border: 8px solid #16171B; border-radius: 44px;
  overflow: hidden; background: #F8F9FB;
  box-shadow: var(--shadow);
}
.shot img { display: block; width: 100%; height: 100%; object-fit: cover; }
@media (prefers-color-scheme: dark) { .shot { border-color: #3A3A3E; } }
/* ---------- steps（録る→AIが要約→積み上がる） ---------- */
.steps { padding: 56px 0 8px; }
.steps h2, .section h2 {
  font-size: clamp(21px, 3.4vw, 26px); font-weight: 900; letter-spacing: .01em;
  margin: 0 0 8px; text-align: center;
}
.steps .sub, .section .sub {
  text-align: center; color: var(--ink-2); font-size: 14.5px; margin: 0 0 32px;
}
.step-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.step {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 16px; padding: 24px 22px;
}
.step .ico {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 14px;
}
.step .ico.blue { background: var(--primary-weak); color: var(--primary); }
.step .ico.orange { background: rgba(255, 107, 53, 0.12); color: var(--accent); }
.step .ico.green { background: rgba(52, 199, 89, 0.12); color: var(--success); }
.step .num { font-size: 11.5px; font-weight: 700; color: var(--ink-3); letter-spacing: .08em; }
.step h3 { margin: 2px 0 6px; font-size: 17px; font-weight: 700; }
.step p { margin: 0; color: var(--ink-2); font-size: 14px; }

/* ---------- hero 追記 ---------- */
.cta-note { font-size: 13px; color: var(--ink-3); margin: 12px 0 0; }

/* ---------- pains ---------- */
.pains { padding: 56px 0 8px; }
.pains h2, .feature h2, .trust h2 {
  font-size: clamp(21px, 3.4vw, 26px); font-weight: 900; letter-spacing: .01em;
  line-height: 1.45; margin: 0 0 8px;
}
.pains h2 { text-align: center; margin-bottom: 28px; }
.pain-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px;
}
.pain {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 16px; padding: 20px 22px;
}
.pain b { font-size: 15.5px; }
.pain p { margin: 6px 0 0; color: var(--ink-2); font-size: 14px; }
.pain-answer { text-align: center; margin: 26px 0 0; font-size: 15.5px; color: var(--ink-2); }
.pain-answer strong { color: var(--ink); }

/* ---------- features ---------- */
.feature { padding: 64px 0; }
.feature.alt { background: color-mix(in srgb, var(--primary) 4%, var(--bg)); }
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.feature-row.reverse .feature-copy { order: 2; }
@media (max-width: 840px) {
  .feature-row { grid-template-columns: 1fr; gap: 28px; }
  .feature-row.reverse .feature-copy { order: 0; }
}
.kicker {
  display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: .04em;
  color: var(--primary); margin-bottom: 8px;
}
.feature-copy p { color: var(--ink-2); font-size: 15px; margin: 12px 0 0; }
.feature-copy p.note { font-size: 13.5px; color: var(--ink-3); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
@media (max-width: 840px) { .chips { justify-content: center; } }
.chips span {
  font-size: 14px; font-weight: 500; padding: 7px 14px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--hair-strong); white-space: nowrap;
}
.chips span.other { background: var(--primary-weak); border-color: transparent; color: var(--primary); font-weight: 700; }

/* ---------- pricing ---------- */
.price-grid {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 16px; align-items: start;
  max-width: 860px; margin: 0 auto;
}
@media (max-width: 760px) { .price-grid { grid-template-columns: 1fr; } }
.price-free, .price-paid {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 20px; padding: 26px clamp(20px, 3.4vw, 30px);
}
.price-paid { border-color: color-mix(in srgb, var(--primary) 35%, transparent); }
.pricing h3 { font-size: 17px; margin: 0 0 12px; }
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { display: flex; gap: 9px; align-items: flex-start; font-size: 14.5px; margin: 9px 0; }
.checks svg { color: var(--success); flex: 0 0 auto; margin-top: 4px; }
.price-desc { color: var(--ink-2); font-size: 14px; margin: -4px 0 14px; }
.packs { width: 100%; border-collapse: collapse; }
.packs th, .packs td { padding: 11px 4px; border-top: 1px solid var(--hair); }
.packs th { text-align: left; font-size: 14.5px; font-weight: 700; }
.packs td { text-align: right; }
.packs td b { font-size: 19px; font-weight: 900; font-variant-numeric: tabular-nums; }
.packs td span { display: block; font-size: 12px; color: var(--ink-3); }
.packs tr.pick th::after {
  content: "おすすめ"; margin-left: 8px; font-size: 10.5px; font-weight: 700;
  color: var(--primary); background: var(--primary-weak);
  border-radius: 999px; padding: 2px 8px; vertical-align: 2px;
}
.price-foot { font-size: 13px; color: var(--ink-3); margin: 12px 0 0; }
.legal-link { text-align: center; font-size: 13px; color: var(--ink-3); margin: 18px 0 0; }

/* ---------- trust ---------- */
.trust h2 { text-align: center; margin-bottom: 28px; }
.trust-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px;
}
.trust-item {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 16px; padding: 22px;
}
.trust-item .ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: var(--primary-weak); color: var(--primary); margin-bottom: 12px;
}
.trust-item h3 { font-size: 16px; margin: 0 0 6px; }
.trust-item p { margin: 0; color: var(--ink-2); font-size: 14px; }

/* ---------- faq ---------- */
.faq { max-width: 760px; margin: 24px auto 0; }
.faq details {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 14px; margin-bottom: 10px;
}
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 48px 16px 20px;
  font-weight: 700; font-size: 15px; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 22px; top: 50%;
  width: 8px; height: 8px; margin-top: -6px;
  border-right: 2px solid var(--ink-3); border-bottom: 2px solid var(--ink-3);
  transform: rotate(45deg); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq details p { margin: 0; padding: 0 20px 18px; color: var(--ink-2); font-size: 14.5px; }

/* ---------- support ---------- */
.section { padding: 56px 0; }
.support-card {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 20px; padding: 30px clamp(20px, 4vw, 36px);
  max-width: 720px; margin: 0 auto;
}
.support-card h3 { font-size: 15.5px; margin: 20px 0 6px; }
.support-card p { color: var(--ink-2); font-size: 14.5px; margin: 6px 0; }
.mail-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary-weak); color: var(--primary);
  font-weight: 700; font-size: 14.5px;
  padding: 11px 20px; border-radius: 12px; margin-top: 4px;
}
.mail-btn:hover { text-decoration: none; opacity: .85; }

/* ---------- doc pages（プラポリ/規約） ---------- */
.doc { padding: 44px 0 72px; max-width: 760px; }
.doc h1 { font-size: 29px; font-weight: 900; margin: 8px 0 4px; }
.doc .updated { color: var(--ink-3); font-size: 13.5px; margin: 0 0 30px; }
.doc h2 {
  font-size: 18px; font-weight: 700; margin: 38px 0 10px;
  padding-left: 12px; border-left: 4px solid var(--primary);
  line-height: 1.5;
}
.doc h3 { font-size: 15.5px; margin: 22px 0 6px; }
.doc p, .doc li { color: var(--ink-2); font-size: 15px; }
.doc ul { padding-left: 1.2em; }
.doc li { margin: 4px 0; }
.doc .callout {
  background: var(--primary-weak); border: 1px solid transparent;
  border-radius: 12px; padding: 14px 18px; margin: 18px 0;
  color: var(--ink-2); font-size: 14px;
}
.doc table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  margin: 14px 0; font-size: 14px; display: block; overflow-x: auto;
  border: 1px solid var(--hair-strong); border-radius: 12px;
}
.doc th, .doc td { padding: 9px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--hair); }
.doc tr:last-child th, .doc tr:last-child td { border-bottom: none; }
.doc th { background: var(--primary-weak); font-weight: 700; color: var(--ink); white-space: nowrap; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--hair); padding: 30px 0 52px; margin-top: 24px; }
.site-footer .wrap {
  display: flex; flex-wrap: wrap; gap: 10px 24px;
  align-items: center; justify-content: space-between;
}
.site-footer .links { display: flex; gap: 20px; font-size: 13.5px; flex-wrap: wrap; }
.site-footer .links a { color: var(--ink-2); font-weight: 500; }
.site-footer .copy { color: var(--ink-3); font-size: 12.5px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

/* ---------- 2026-10-16 ブラッシュアップ ---------- */
.nw { display: inline-block; }
.hero-copy h1 { font-size: clamp(22px, 4.3vw, 34px); }
.phone-wrap { gap: 14px; }
.shot { position: relative; }
/* note.jpg の「▶ 2:10」の位置（画像 640×1389 上で x≈350〜420, y≈428〜466） */
.tap-ring {
  position: absolute; left: 60%; top: 28.3%; width: 13.5%; height: 4%;
  border: 2.5px solid var(--accent); border-radius: 999px;
  box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.18);
  pointer-events: none;
}
.shot-caption {
  margin: 0; font-size: 13.5px; color: var(--ink-2); text-align: center;
}
.shot-caption b { color: var(--primary); }

.replay { padding: 64px 0 56px; text-align: center; }
.replay h2 {
  font-size: clamp(21px, 3.4vw, 26px); font-weight: 900; letter-spacing: .01em;
  line-height: 1.45; margin: 0 0 10px;
}
.replay .sub { color: var(--ink-2); font-size: 15px; margin: 0 auto 30px; max-width: 40em; }
.replay-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px;
  text-align: left;
}
.replay-item {
  background: var(--card); border: 1px solid var(--hair);
  border-radius: 16px; padding: 20px 22px;
}
.replay-item b { font-size: 15.5px; color: var(--primary); }
.replay-item p { margin: 6px 0 0; color: var(--ink-2); font-size: 14px; }

.instruments .chips { justify-content: center; max-width: 760px; margin-inline: auto; }
@media (max-width: 640px) { br.pc { display: none; } }