/* すなお天気 — 公開ページ（design.md §3 のデザイントークン: 空の帯と、発表の紙） */
:root {
  --paper: #F5F3EE;
  --card: #FFFFFF;
  --ink: #1B1F23;
  --ink2: #4B525A;
  --ink3: #636A72;
  --rule: #D9D4C8;
  --ai: #1F4E79;
  --rain: #2F6FB0;
  --temp-high: #C4452D;
  --sky-top: #1D5A99;
  --sky-bottom: #2E72B5;
  --night-top: #0D1828;
  --night-bottom: #1C2B42;
  --l2: #F2E700;
  --l3: #FF2800;
  --l4: #AA00AA;
  --l5: #0C000C;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101316;
    --card: #1A1E22;
    --ink: #ECEEF0;
    --ink2: #A9B0B8;
    --ink3: #838B94;
    --rule: #2A3036;
    --ai: #7FB2E5;
    --rain: #5E9BD6;
    --temp-high: #FF8A70;
    --sky-top: #123D6B;
    --sky-bottom: #1D5288;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  font-feature-settings: "palt" 0;
}
img { max-width: 100%; display: block; }
a { color: var(--ai); }
.container { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .container { padding: 0 24px; } }
.num { font-family: ui-rounded, "SF Pro Rounded", -apple-system, sans-serif; font-variant-numeric: tabular-nums; }

/* ナビ */
.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--rule); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 56px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: 17px; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.nav-links { display: flex; gap: 16px; font-size: 15px; }
.nav-links a { color: var(--ink2); text-decoration: none; }
.nav-links a:hover { color: var(--ai); }
@media (max-width: 480px) { .nav-links .hide-sm { display: none; } }

/* 空の帯（ヒーロー） */
.sky {
  background: linear-gradient(180deg, var(--sky-top), var(--sky-bottom));
  color: #FFFFFF;
  padding: 56px 0 64px;
}
.sky-grid { display: grid; gap: 40px; align-items: center; }
@media (min-width: 820px) { .sky-grid { grid-template-columns: 1.15fr .85fr; } }
.sky h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.3; margin: 0 0 16px; font-weight: 700; letter-spacing: .01em; }
.sky .lead { font-size: 18px; margin: 0 0 24px; }
.stamp {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid currentColor; border-radius: 8px;
  padding: 2px 10px; font-size: 13px; line-height: 1.6;
}
.sky .stamp { color: #FFFFFF; }
.notice {
  background: rgba(255,255,255,.14); border-radius: 12px; padding: 12px 14px;
  font-size: 15px; line-height: 1.6; margin: 0 0 24px;
}
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: #000; color: #fff; border-radius: 12px; padding: 8px 16px;
  text-decoration: none; font-weight: 600; line-height: 1.2;
}
.badge small { display: block; font-size: 11px; font-weight: 400; opacity: .8; }
.badge svg { width: 22px; height: 22px; fill: #fff; }
.meta { font-size: 13px; opacity: .92; }
.phone {
  max-width: 300px; margin: 0 auto; border-radius: 36px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.35); background: var(--card);
}

/* 発表の紙（本文） */
.section { padding: 56px 0; border-bottom: 1px solid var(--rule); }
.section:last-of-type { border-bottom: 0; }
.label { font-size: 13px; color: var(--ai); font-weight: 600; letter-spacing: .06em; }
h2 { font-size: clamp(24px, 4vw, 32px); line-height: 1.4; margin: 6px 0 16px; font-weight: 700; }
h3 { font-size: 18px; margin: 0 0 6px; font-weight: 600; }
.desc { color: var(--ink2); margin: 0; }
.feature { display: grid; gap: 28px; align-items: center; padding: 32px 0; }
@media (min-width: 820px) {
  .feature { grid-template-columns: 1fr 300px; }
  .feature.reverse { grid-template-columns: 300px 1fr; }
  .feature.reverse .feature-media { order: -1; }
}
.feature-media .phone { border-color: var(--rule); max-width: 280px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chip { border-radius: 8px; padding: 2px 10px; font-size: 14px; font-weight: 600; }
.chip.l2 { background: var(--l2); color: #000; box-shadow: inset 0 0 0 1px var(--ink3); }
.chip.l3 { background: var(--l3); color: #000; }
.chip.l4 { background: var(--l4); color: #fff; }
.chip.l5 { background: var(--l5); color: #fff; box-shadow: inset 0 0 0 1px var(--ink); }

.grid3 { display: grid; gap: 16px; margin-top: 24px; }
@media (min-width: 720px) { .grid3 { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 16px; padding: 20px; }
.card p { margin: 0; color: var(--ink2); font-size: 15px; line-height: 1.7; }

table.plan { width: 100%; border-collapse: collapse; margin-top: 20px; background: var(--card); border: 1px solid var(--rule); border-radius: 16px; overflow: hidden; font-size: 15px; }
table.plan th, table.plan td { padding: 12px 14px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
table.plan tr:last-child td { border-bottom: 0; }
table.plan th { font-weight: 600; color: var(--ink2); font-size: 13px; }
table.plan td.c { text-align: center; white-space: nowrap; }

.source { font-size: 13px; color: var(--ink3); line-height: 1.7; }

/* 文書（プライバシー・規約・サポート） */
.doc { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
@media (min-width: 720px) { .doc { padding: 40px 24px 72px; } }
.doc h1 { font-size: clamp(26px, 5vw, 34px); line-height: 1.4; margin: 12px 0 4px; }
.doc h2 { font-size: 20px; margin: 36px 0 8px; padding-top: 16px; border-top: 1px solid var(--rule); }
.doc h3 { margin-top: 24px; }
.doc p, .doc li { color: var(--ink); }
.doc ul { padding-left: 1.3em; }
.doc li { margin: 4px 0; }
.updated { font-size: 13px; color: var(--ink3); margin: 0 0 24px; }
.back { font-size: 15px; text-decoration: none; }
.callout { background: var(--card); border: 1px solid var(--rule); border-left: 4px solid var(--ai); border-radius: 12px; padding: 14px 16px; margin: 20px 0; }
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }
.faq details { border-bottom: 1px solid var(--rule); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--ink3); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 8px 0 0; color: var(--ink2); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; overflow-wrap: anywhere; }

/* フッター */
.footer { border-top: 1px solid var(--rule); padding: 28px 0 40px; font-size: 13px; color: var(--ink3); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-links a { color: var(--ink2); text-decoration: none; }
.footer .source { flex-basis: 100%; }