/* ============================================================
   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;
}

/* ---------- phone mock（アプリのUI語彙で組む） ---------- */
.phone-wrap { display: grid; place-items: center; }
.phone {
  width: min(340px, 88vw);
  background: var(--bg);
  border: 1px solid var(--hair-strong);
  border-radius: 40px;
  box-shadow: var(--shadow);
  padding: 14px 12px 20px;
  position: relative;
}
.phone::before {                 /* ノッチ */
  content: ""; display: block; margin: 2px auto 12px;
  width: 96px; height: 22px; border-radius: 12px;
  background: color-mix(in srgb, var(--ink) 92%, transparent);
  opacity: .9;
}
@media (prefers-color-scheme: dark) { .phone::before { background: #000; } }
.phone .appbar {
  text-align: center; font-size: 14px; font-weight: 700; margin-bottom: 12px;
}
.pcard {
  background: var(--card);
  border: 1px solid var(--hair);
  border-radius: 16px;           /* AppTheme.radiusLg */
  padding: 14px;
  margin-bottom: 12px;
}
.pcard .head {
  display: flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 700; margin-bottom: 10px;
}
.pcard .head svg { color: var(--primary); }
.pcard .head .sp { flex: 1; }
.pcard .head .chev { color: var(--ink-3); }
.stats { display: flex; align-items: baseline; gap: 18px; margin-bottom: 10px; }
.stats b {
  font-size: 24px; font-weight: 900; color: var(--primary);
  font-variant-numeric: tabular-nums;
}
.stats span { font-size: 12px; color: var(--ink-3); }
.stats .total { margin-left: auto; font-size: 11.5px; color: var(--ink-3); }
.plabel { font-size: 11px; font-weight: 700; margin: 8px 0 4px; }
.plabel.win { color: var(--success); }
.pline {
  display: flex; gap: 7px; align-items: flex-start;
  font-size: 12.5px; line-height: 1.45; margin-top: 4px; color: var(--ink);
}
.pline svg { flex: 0 0 auto; margin-top: 2px; }
.pline.win svg { color: var(--success); }
.pline.imp svg { color: var(--accent); }
.pline.foc svg { color: var(--primary); }
.recur-strip {
  display: flex; gap: 7px; align-items: center;
  background: var(--recur-bg); border-radius: 9px;
  padding: 6px 10px; margin-top: 10px;
  font-size: 11.5px; color: var(--recur); font-weight: 700;
}
.recur-strip span { color: var(--ink); font-weight: 500; }
/* 弧カードのミニ時系列 */
.tl { margin-top: 4px; }
.tl .sess { display: flex; gap: 9px; }
.tl .rail { display: flex; flex-direction: column; align-items: center; width: 9px; }
.tl .rail .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); margin-top: 5px; flex: 0 0 auto; }
.tl .rail .line { width: 2px; flex: 1; background: var(--hair-strong); }
.tl .sess:last-child .rail .line { display: none; }
.tl .body { flex: 1; padding-bottom: 10px; }
.tl .sess:last-child .body { padding-bottom: 0; }
.tl .date { font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.badge {
  font-size: 10.5px; font-weight: 700; color: var(--primary);
  background: var(--primary-weak); border-radius: 999px; padding: 2px 9px;
}

/* ---------- 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; }

/* ---------- 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; }
}