/* ネーム帳 公開ページ — アプリのトークン（design.md §2）に合わせる
   机 = 深緑のカッティングマット、原稿 = 白い紙、差し色 = 紙の上の水色の仕上がり線 */
:root {
  --mat: #2B6B4C;
  --mat-grid: rgba(255, 255, 255, 0.12);
  --on-mat: #FFFFFF;
  --on-mat-sub: #CFE3D7;
  --paper: #FFFFFF;
  --paper-shadow: 0 2px 6px rgba(0, 0, 0, 0.22), 0 18px 40px rgba(0, 0, 0, 0.18);
  --sheet: #F6F5F0;
  --surface: #FFFFFF;
  --ink: #1B201D;
  --ink-sub: #58615C;
  --ink-mute: #6A726D;
  --accent: #1F6B47;
  --on-accent: #FFFFFF;
  --akaire: #B8322A;
  --guide: #3D8FC7;
  --line: rgba(27, 32, 29, 0.12);
  --radius: 14px;
  --max: 1040px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --mat: #163A2B;
    --mat-grid: rgba(255, 255, 255, 0.07);
    --on-mat: #E8F3EC;
    --on-mat-sub: #9FC3AE;
    --paper-shadow: 0 2px 8px rgba(0, 0, 0, 0.45), 0 18px 40px rgba(0, 0, 0, 0.4);
    --sheet: #1A1F1C;
    --surface: #232925;
    --ink: #ECEFEC;
    --ink-sub: #A2ACA6;
    --ink-mute: #8C968F;
    --accent: #6FCB98;
    --on-accent: #0E1F16;
    --akaire: #FF7A6E;
    --line: rgba(236, 239, 236, 0.12);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--sheet);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
.container { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* マット（10mm 方眼の机） */
.mat {
  background-color: var(--mat);
  background-image:
    linear-gradient(var(--mat-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--mat-grid) 1px, transparent 1px);
  background-size: 38px 38px;
  color: var(--on-mat);
}

/* ナビ */
.nav { position: sticky; top: 0; z-index: 10; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--on-mat); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: var(--on-mat-sub); text-decoration: none; font-size: 14px; }
.nav-links a:hover { color: var(--on-mat); }

/* ヒーロー */
.hero { padding: 56px 0 72px; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
.eyebrow { color: var(--on-mat-sub); font-size: 14px; letter-spacing: 0.08em; margin: 0 0 8px; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.35; margin: 0 0 16px; letter-spacing: 0.01em; }
.hero p.lead { color: var(--on-mat-sub); font-size: 17px; margin: 0 0 24px; }
.badge-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--paper); color: #1B201D; text-decoration: none; font-weight: 700;
  padding: 12px 22px; border-radius: 999px; box-shadow: var(--paper-shadow);
}
.note { color: var(--on-mat-sub); font-size: 13px; }

/* 原稿（白い紙＋水色の仕上がり線） */
.paper {
  background: var(--paper);
  border-radius: 4px;
  box-shadow: var(--paper-shadow);
  padding: 10px;
  position: relative;
}
.paper::after {
  content: ""; position: absolute; inset: 6px;
  border: 1.5px solid var(--guide); border-radius: 2px; pointer-events: none; opacity: 0.8;
}
.hero .paper { transform: rotate(-2deg); max-width: 460px; margin-left: auto; }

/* セクション */
section { padding: 64px 0; }
h2 { font-size: clamp(24px, 3.4vw, 32px); line-height: 1.4; margin: 0 0 12px; }
.section-lead { color: var(--ink-sub); margin: 0 0 32px; max-width: 720px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card {
  background: var(--surface); border-radius: var(--radius); padding: 22px 22px 18px;
  border: 1px solid var(--line);
}
.card h3 { margin: 0 0 6px; font-size: 18px; line-height: 1.5; }
.card p { margin: 0; color: var(--ink-sub); font-size: 15px; }
.card .mark { display: inline-block; width: 28px; height: 3px; background: var(--guide); border-radius: 2px; margin-bottom: 12px; }

.showcase { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; margin-top: 8px; }
.showcase figure { margin: 0; }
.showcase figcaption { color: var(--on-mat); font-weight: 700; margin-top: 14px; font-size: 15px; line-height: 1.6; }

.plus { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.price { font-size: 28px; font-weight: 800; margin: 4px 0; }
.price small { font-size: 14px; font-weight: 400; color: var(--ink-sub); }
ul.check { padding-left: 1.2em; margin: 8px 0 0; }
ul.check li { margin: 4px 0; }

/* 文書（プライバシー・規約・サポート） */
.doc { max-width: 760px; margin: 0 auto; padding: 40px 16px 72px; }
.doc h1 { font-size: clamp(26px, 4vw, 34px); margin: 12px 0 4px; line-height: 1.4; }
.doc h2 { font-size: 20px; margin: 36px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
.doc h3 { font-size: 17px; margin: 24px 0 6px; }
.doc p, .doc li { color: var(--ink); }
.updated { color: var(--ink-mute); font-size: 14px; margin: 0 0 24px; }
.back-home { font-size: 14px; text-decoration: none; }
.callout { background: var(--surface); border-left: 4px solid var(--accent); padding: 14px 18px; border-radius: 8px; margin: 20px 0; }
.callout.warn { border-left-color: var(--akaire); }
table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 12px 0; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--surface); }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 700; }
details p { margin: 8px 0 0; }

/* フッター */
.footer { padding: 32px 0; font-size: 14px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; justify-content: space-between; color: var(--on-mat-sub); }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer a { color: var(--on-mat-sub); text-decoration: none; }
.footer a:hover { color: var(--on-mat); }

@media (max-width: 760px) {
  .hero { padding: 32px 0 48px; }
  .hero-inner { grid-template-columns: 1fr; gap: 28px; }
  .hero .paper { margin: 0 auto; max-width: 340px; }
  .plus { grid-template-columns: 1fr; }
  section { padding: 48px 0; }
  .nav-links { gap: 12px; }
}