/* RINSEQ サイト共通スタイル:白い方眼の図面+AIの青〜紫の光+ギルドの金 */
:root {
  color-scheme: light;
  --white: #FCFCFE;
  --paper: #FFFFFF;
  --ink: #1B1D2A;
  --ink-soft: #5A5E73;
  --line: #E3E5EF;
  --grid: rgba(91,140,255,0.07);
  --gold: #B8913A;
  --gold-deep: #7A5A14;
  --gold-soft: #F3E9CC;
  --ai-a: #5B8CFF;
  --ai-b: #9B6BFF;
  --ai-c: #36D1C4;
  --iris: linear-gradient(100deg, var(--ai-c), var(--ai-a) 45%, var(--ai-b));
  /* フォント案B「すっきりゴシック」:日本語はM PLUS 1、英字・数字はOutfit */
  --serif: "M PLUS 1", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --latin: "Outfit", "M PLUS 1", system-ui, sans-serif;
  --sans: "M PLUS 1", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.9;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--white);
}
a { color: inherit; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
img { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
:focus-visible { outline: 2px solid var(--ai-a); outline-offset: 3px; border-radius: 4px; }
.eyebrow { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ai-a); }
.h2 { font-family: var(--serif); font-weight: 800; letter-spacing: -0.01em; font-size: clamp(24px, 3.4vw, 34px); line-height: 1.45; margin-top: 8px; }
.lead { color: var(--ink-soft); max-width: 42em; margin-top: 12px; }
.sec { padding-block: 80px; }
.reveal { transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1), opacity 0.8s ease; }
.js .reveal:not(.in) { transform: translateY(22px); opacity: 0.3; }

/* ヘッダー */
.beta-bar { background: var(--ink); color: #fff; text-align: center; font-size: 12.5px; padding: 7px 16px; }
.beta-bar b { background: var(--iris); -webkit-background-clip: text; background-clip: text; color: transparent; }
header.site { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: rgba(252,252,254,0.9); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; gap: 22px; height: 62px; }
.wordmark { font-family: var(--latin); font-weight: 800; letter-spacing: 0.22em; font-size: 18px; text-decoration: none; }
.nav { display: flex; gap: 18px; margin-left: auto; font-size: 13px; color: var(--ink-soft); }
.nav a { text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav a[aria-current="page"] { font-weight: 700; }
.head-dl { text-decoration: none; background: var(--ink); color: #fff; font-weight: 700; font-size: 13px; padding: 7px 14px; border-radius: 8px; white-space: nowrap; }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 5px 10px; font: inherit; font-size: 13px; cursor: pointer; }
@media (max-width: 900px) {
  .nav { display: none; position: absolute; top: 62px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 20px 14px; }
  .nav.open { display: flex; }
  .nav a { padding: 8px 0; border-bottom: 1px solid var(--line); }
  .menu-btn { display: inline-block; }
  .head-dl { margin-left: 0; }
}

/* ダウンロード */
.dl-row { display: flex; flex-wrap: wrap; gap: 10px; }
.dl { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; border-radius: 12px; padding: 13px 20px; font-weight: 700; transition: transform 0.15s ease, box-shadow 0.15s ease; }
.dl:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(91,140,255,0.22); }
.dl svg { width: 22px; height: 22px; flex-shrink: 0; }
.dl b { display: block; font-size: 15px; line-height: 1.3; }
.dl small { display: block; font-size: 11px; font-weight: 500; line-height: 1.3; }
.dl.primary { background: var(--ink); color: #fff; }
.dl.primary small { color: var(--ai-c); }
.dl.secondary { background: var(--paper); color: var(--ink); border: 1px solid var(--ink); }
.dl.secondary small { color: var(--ink-soft); }
/* ダウンロード前のプラン選び */
.plan-pick { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px; margin-bottom: 12px; display: grid; gap: 10px; max-width: 520px; transition: transform 0.1s; }
.final .plan-pick { margin-inline: auto; text-align: left; }
.plan-pick.shake { animation: pp-shake 0.45s; border-color: #D9534F; }
@keyframes pp-shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.plan-pick-step { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; }
.step-no { width: 22px; height: 22px; border-radius: 50%; background: var(--iris); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-family: var(--mono); font-size: 12px; }
.plan-pick-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.plan-pick-options button { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--white); color: var(--ink); cursor: pointer; font: inherit; text-align: left; }
.plan-pick-options button b { font-size: 15px; }
.plan-pick-options button span { font-size: 12px; color: var(--ink-soft); }
.plan-pick-options button[aria-checked="true"] { border-color: var(--ai-a); box-shadow: 0 0 0 2px var(--ai-a); background: #F1F4FF; }
.plan-pick-msg { font-size: 12.5px; color: #B23A3A; }
.plan-pick-msg.ok { color: #2f6a3a; }
.dl.locked { opacity: 0.45; }
.dl-note { font-size: 12.5px; color: var(--ink-soft); display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 12px; }
.dl-note span::before { content: "◆ "; color: var(--gold); font-size: 9px; vertical-align: 1px; }

/* トップ:ヒーロー */
.hero { padding-block: 56px 40px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 44px; align-items: center; }
@media (max-width: 900px) { .hero { grid-template-columns: minmax(0, 1fr); } }
.hero h1 { font-family: var(--serif); font-weight: 800; letter-spacing: -0.01em; font-size: clamp(30px, 4.6vw, 50px); line-height: 1.35; }
.hero h1 small { display: block; font-family: var(--mono); font-size: 12.5px; font-weight: 500; color: var(--ai-a); letter-spacing: 0.1em; margin-bottom: 12px; }
.hero .lead { margin: 16px 0 26px; }
.equation { display: grid; gap: 10px; }
.eq-item { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 14px 18px; box-shadow: 0 14px 34px rgba(27,29,42,0.06); }
.eq-icon { width: 96px; height: 96px; border-radius: 18px; background: #F4F6FC; display: flex; align-items: center; justify-content: center; }
.eq-icon svg { width: 88px; height: 88px; }
.eq-item h3 { font-size: 18px; }
.eq-item h3 { font-size: 16px; }
.eq-item p { font-size: 13px; color: var(--ink-soft); line-height: 1.7; }
.eq-x { text-align: center; font-family: var(--latin); font-weight: 800; color: var(--gold); font-size: 18px; line-height: 1; }

/* 3本柱 */
.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 34px; }
@media (max-width: 880px) { .pillars { grid-template-columns: minmax(0, 1fr); } }
.pillar { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 26px; display: grid; gap: 10px; align-content: start; position: relative; overflow: hidden; }
.pillar::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--iris); }
.pillar-ill { width: 132px; height: 132px; border-radius: 22px; background: #F4F6FC; display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.pillar-ill svg { width: 118px; height: 118px; }
.pillar .num { font-family: var(--latin); font-weight: 800; font-size: 13px; color: var(--gold); letter-spacing: 0.1em; }
.pillar h3 { font-family: var(--serif); font-size: 21px; }
.pillar ul { margin: 0; padding-left: 1.1em; font-size: 13.5px; color: var(--ink-soft); display: grid; gap: 4px; }
.pillar .more { font-size: 13px; font-weight: 700; color: var(--ai-a); text-decoration: none; margin-top: 4px; }
.pillar .more::after { content: " →"; }

/* 時短の図(無音の自動カット) */
.timesave { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 30px; align-items: center; margin-top: 30px; }
@media (max-width: 880px) { .timesave { grid-template-columns: minmax(0, 1fr); } }
.strip-box { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.strip { display: flex; height: 46px; border-radius: 8px; overflow: hidden; background: #F3F4FA; }
.strip > div { height: 100%; flex: 0 0 auto; }
.strip .keep { background: linear-gradient(180deg, #EEF1FF, #DCE3FF); border-right: 2px solid #fff; }
.strip .cut { background: repeating-linear-gradient(135deg, rgba(217,83,79,0.35) 0 6px, rgba(217,83,79,0.12) 6px 12px); }
.strip-stats { display: flex; flex-wrap: wrap; gap: 8px 26px; margin-top: 12px; font-size: 13px; color: var(--ink-soft); }
.strip-stats b { font-family: var(--latin); font-size: 24px; color: var(--ink); margin-right: 4px; font-variant-numeric: tabular-nums; }
.strip-stats .gold b { color: var(--gold); }

/* 共通カード */
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 30px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 30px; }
@media (max-width: 880px) { .grid3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .grid3, .grid2 { grid-template-columns: minmax(0, 1fr); } }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 20px; display: grid; gap: 6px; align-content: start; }
.card .k { font-family: var(--mono); font-size: 11px; color: var(--ai-b); letter-spacing: 0.08em; }
.card h3 { font-size: 16px; }
.card p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.8; }
a.card { text-decoration: none; transition: transform 0.15s ease, border-color 0.15s ease; }
a.card:hover { transform: translateY(-2px); border-color: var(--ai-a); }

/* ランク(短く) */
.rank-mini { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.rank-mini span { font-family: var(--latin); font-weight: 800; font-size: 13px; padding: 4px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); color: var(--ink-soft); }
.rank-mini span:last-child { background: var(--iris); color: #fff; border-color: transparent; }

/* 料金 */
.beta-box { margin-top: 26px; background: var(--ink); color: #fff; border-radius: 16px; padding: 20px 24px; }
.beta-box b { font-size: 17px; }
.beta-box b span { background: var(--iris); -webkit-background-clip: text; background-clip: text; color: transparent; }
.beta-box p { font-size: 13px; opacity: 0.82; margin-top: 4px; }
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 18px; }
@media (max-width: 880px) { .plans { grid-template-columns: minmax(0, 1fr); } }
.plan { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: grid; gap: 10px; align-content: start; }
.plan.hl { border-color: var(--ai-a); box-shadow: 0 16px 40px rgba(91,140,255,0.15); }
.plan-tag { font-family: var(--latin); font-weight: 800; font-size: 12.5px; color: var(--ai-a); letter-spacing: 0.1em; }
.plan-name { font-weight: 700; font-size: 16px; }
.price { font-family: var(--latin); font-weight: 800; font-size: 36px; line-height: 1; font-variant-numeric: tabular-nums; }
.price small { font-family: var(--sans); font-size: 13px; font-weight: 500; color: var(--ink-soft); margin-left: 4px; }
.trial { justify-self: start; font-size: 11.5px; font-weight: 700; color: #fff; background: var(--iris); padding: 2px 10px; border-radius: 99px; }
.plan ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; font-size: 13.5px; }
.plan li::before { content: "▸ "; color: var(--ai-a); }

/* 記事ページ */
.crumbs { font-size: 12px; color: var(--ink-soft); padding-top: 22px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.page-head { padding-block: 26px 10px; }
.page-head h1 { font-family: var(--serif); font-weight: 800; font-size: clamp(28px, 4vw, 42px); line-height: 1.4; margin-top: 8px; }
.page-head .lead { font-size: 15.5px; }
.article { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 40px; padding-block: 30px 80px; align-items: start; }
@media (max-width: 900px) { .article { grid-template-columns: minmax(0, 1fr); } }
.prose { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: clamp(20px, 4vw, 40px); }
.prose h2 { font-family: var(--serif); font-size: 22px; margin: 34px 0 10px; padding-bottom: 6px; border-bottom: 2px solid var(--gold-soft); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 16.5px; margin: 22px 0 6px; }
.prose p { margin: 0 0 14px; max-width: 42em; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 1.4em; display: grid; gap: 4px; max-width: 42em; }
.prose table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 6px 0 18px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { background: #F6F7FC; font-weight: 700; }
.table-wrap { overflow-x: auto; }
.tip { background: var(--gold-soft); border-left: 3px solid var(--gold); border-radius: 0 10px 10px 0; padding: 12px 16px; font-size: 14px; margin: 0 0 16px; }
.tip b { color: var(--gold-deep); }
.in-app { background: #F1F4FF; border: 1px solid rgba(91,140,255,0.3); border-radius: 12px; padding: 14px 16px; font-size: 14px; margin: 0 0 16px; }
.in-app b { color: var(--ai-a); }
.side { display: grid; gap: 14px; position: sticky; top: 90px; }
@media (max-width: 900px) { .side { position: static; } }
.side-box { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; font-size: 13.5px; }
.side-box h2 { font-size: 13px; font-family: var(--sans); margin-bottom: 8px; color: var(--ink-soft); letter-spacing: 0.04em; }
.side-box ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.side-box a { text-decoration: none; }
.side-box a:hover { color: var(--ai-a); }
.side-cta { background: var(--ink); color: #fff; border-radius: 14px; padding: 18px; font-size: 13px; display: grid; gap: 10px; }
.side-cta b { font-size: 15px; }
.side-cta a { text-decoration: none; background: #fff; color: var(--ink); font-weight: 700; text-align: center; border-radius: 8px; padding: 8px; }

/* Q&A */
.faq { display: grid; gap: 10px; }
.faq-group { margin-top: 30px; }
.faq-group > h2 { font-family: var(--serif); font-size: 20px; margin-bottom: 12px; }
.faq details { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; font-family: var(--latin); font-weight: 800; color: var(--ai-a); margin-right: 10px; }
.faq summary::after { content: "+"; color: var(--ai-a); font-family: var(--mono); font-size: 18px; line-height: 1.4; margin-left: auto; }
.faq details[open] summary::after { content: "−"; }
.faq .a { margin-top: 8px; color: var(--ink-soft); font-size: 14px; padding-left: 26px; }

/* 最後のダウンロード・フッター */
.final { text-align: center; padding-block: 80px; border-top: 1px solid var(--line); background: radial-gradient(ellipse at 50% 100%, rgba(91,140,255,0.12), transparent 60%); }
.final .dl-row, .final /* ダウンロード前のプラン選び */
.plan-pick { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px; margin-bottom: 12px; display: grid; gap: 10px; max-width: 520px; transition: transform 0.1s; }
.final .plan-pick { margin-inline: auto; text-align: left; }
.plan-pick.shake { animation: pp-shake 0.45s; border-color: #D9534F; }
@keyframes pp-shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.plan-pick-step { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; }
.step-no { width: 22px; height: 22px; border-radius: 50%; background: var(--iris); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-family: var(--mono); font-size: 12px; }
.plan-pick-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.plan-pick-options button { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--white); color: var(--ink); cursor: pointer; font: inherit; text-align: left; }
.plan-pick-options button b { font-size: 15px; }
.plan-pick-options button span { font-size: 12px; color: var(--ink-soft); }
.plan-pick-options button[aria-checked="true"] { border-color: var(--ai-a); box-shadow: 0 0 0 2px var(--ai-a); background: #F1F4FF; }
.plan-pick-msg { font-size: 12.5px; color: #B23A3A; }
.plan-pick-msg.ok { color: #2f6a3a; }
.dl.locked { opacity: 0.45; }
.dl-note { justify-content: center; }
.final .h2 { margin-bottom: 22px; }
footer.site-foot { border-top: 1px solid var(--line); padding-block: 36px; font-size: 13px; color: var(--ink-soft); background: var(--white); }
.foot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.foot-grid h2 { font-size: 12px; font-family: var(--mono); letter-spacing: 0.12em; color: var(--ai-a); margin-bottom: 8px; font-weight: 500; }
.foot-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.foot-grid a { text-decoration: none; }
.foot-grid a:hover { color: var(--ink); }
.copy { margin-top: 26px; font-size: 12px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: none !important; }
  .js .reveal:not(.in) { transform: none; opacity: 1; }
}

/* ベータ版の期間(10/31まで)と、11月からの正式版で出し分ける */
.official-only { display: none !important; }
.after-beta .official-only { display: flex !important; }
.after-beta .beta-only { display: none !important; }