:root{
  --paper:#FFFFFF;
  --paper-2:#F7F5F2;
  --tint-page:#FBF7F2;
  --ink:#1C1917;
  --ink-2:#57534E;
  --ink-3:#A8A29E;
  --line:#E7E5E4;
  --line-2:#F5F5F4;
  /* SheetMap の緑、GENBA desk の橙とは別の、紙の茶。 */
  --accent:#8C6239;
  --accent-bright:#A67C52;
  --accent-soft:#F3EBE1;
  --grad:linear-gradient(90deg,#A67C52,#8C6239);
  --navy:#1C1917;
  --radius:16px;
  --shadow:0 18px 40px -22px rgba(28,25,23,.28);
  --max:1120px;

  /* メニューの中だけは紙の暖色を使わず、macOSの色をそのまま置く。
     値は darkAqua で実測。地色と枠だけは暖色のまま。 */
  --menu-text:rgba(255,255,255,.847);
  --menu-text-2:rgba(255,255,255,.549);
  --menu-text-3:rgba(255,255,255,.247);
  --menu-on-hl:#FFFFFF;
  --menu-hl:#0059D1;
  --menu-accent:#007AFF;
  --menu-track:rgba(255,255,255,.22);

  /* Google Fonts は読まない。訪問者のIPを第三者に渡さない。 */
  --sans:"Hiragino Sans","Hiragino Kaku Gothic ProN","Helvetica Neue",system-ui,sans-serif;
  --mincho:"Hiragino Mincho ProN","Yu Mincho",YuMincho,serif;

  --tint-color:#FAF8F4;
  --tint-a:0;
  --mottle-a:0;
  --grain-a:0;
  --mottle-src:none;
  --grain-src:none;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  line-break:strict;
  font-feature-settings:"palt";
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit}
img{display:block;max-width:100%}
button,summary{font:inherit}

.ov{position:fixed;inset:0;pointer-events:none;z-index:80;transition:opacity .35s ease}
.ov-tint{background:var(--tint-color);opacity:var(--tint-a)}
.ov-mottle{background-image:var(--mottle-src);background-size:100% 100%;opacity:var(--mottle-a)}
.ov-grain{background-image:var(--grain-src);background-size:256px 256px;opacity:var(--grain-a)}
body.is-off .ov{opacity:0}

.wrap{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
section{padding-block:88px}
.section-head{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
h1,h2,h3{font-weight:800;letter-spacing:0;line-height:1.35}
h1{font-size:clamp(2.15rem,4.6vw,3.35rem);line-height:1.28;letter-spacing:-.02em}
h2{font-size:clamp(1.7rem,3vw,2.35rem);letter-spacing:-.02em;margin-top:14px}
h3{font-size:1.05rem;line-height:1.55}
.hl{color:var(--accent)}
.lede{margin-top:18px;color:var(--ink-2);font-size:16.5px;max-width:640px}
.small{font-size:.8rem;line-height:1.8;color:var(--ink-3)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 22px;border-radius:999px;border:1px solid transparent;
  font-weight:700;font-size:15px;letter-spacing:.04em;text-decoration:none;
  cursor:pointer;transition:transform .15s ease,background .15s ease,box-shadow .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-dark{background:var(--navy);color:#fff;box-shadow:0 10px 24px -16px rgba(28,25,23,.8)}
.btn-dark:hover{background:#000}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:0 1px 2px rgba(28,25,23,.04)}
.btn-ghost:hover{background:var(--paper-2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;height:72px;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);
  border-bottom:1px solid rgba(231,229,228,.7);
}
.nav-inner{height:100%;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;letter-spacing:-.02em;flex:none}
.logo-mark{width:28px;height:28px;flex:none;display:block}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-links a{text-decoration:none;color:var(--ink-2);font-size:14.5px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-end{display:flex;align-items:center;gap:10px;flex:none}
.lang-pill{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);text-decoration:none;font-size:13.5px;font-weight:600;color:var(--ink-2);
}
.lang-pill:hover{background:var(--paper-2);color:var(--ink)}
.paper-toggle{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);background:#fff;cursor:pointer;font-size:13px;font-weight:700;color:var(--ink);
}
.paper-toggle:hover{background:var(--paper-2)}
.glyph{width:11px;height:13px;border:1.5px solid currentColor;border-radius:1.5px;position:relative}
.glyph::after{
  content:"";position:absolute;inset:2px 2px auto 2px;height:1px;background:currentColor;
  box-shadow:0 2.5px 0 currentColor,0 5px 0 currentColor;opacity:.55;
}
body.is-off .glyph{opacity:.35}
@media(max-width:860px){
  .nav-links{display:none}
  .nav-end{margin-left:auto}
}
@media(max-width:720px){
  .wrap{width:min(var(--max),calc(100% - 32px))}
  .nav-inner{gap:10px}
  section{padding-block:64px}
  .hero{padding-top:40px}
  .pop,.pop-note{margin-left:0}
}

/* ---------- hero ---------- */
.hero{
  padding:72px 0 28px;
  background:
    radial-gradient(900px 420px at 80% 0%,rgba(166,124,82,.16),transparent 60%),
    linear-gradient(180deg,var(--tint-page),#fff 78%);
}
.hero-grid{display:grid;gap:48px;align-items:center}
@media(min-width:960px){.hero-grid{grid-template-columns:minmax(0,1.15fr) 300px}}
.hero h1{margin-top:18px}
.hero .lede{margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.ticks{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:22px;padding:0;list-style:none}
.ticks li{display:flex;align-items:center;gap:7px;color:var(--ink-2);font-size:13.5px;font-weight:600}
.ticks li::before{content:"✓";color:var(--accent);font-weight:800}

.pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 12px 6px 6px;border-radius:999px;background:#fff;
  border:1px solid var(--line);box-shadow:0 1px 2px rgba(28,25,23,.04);
  font-size:13px;font-weight:600;color:var(--ink-2);
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:800;
}

/* ---------- メニューの再現 ---------- */
.pop{
  position:relative;width:100%;max-width:280px;margin-left:auto;
  background:rgba(45,44,41,.92);
  backdrop-filter:blur(20px) saturate(1.3);-webkit-backdrop-filter:blur(20px) saturate(1.3);
  border:1px solid rgba(231,227,219,.13);border-radius:14px;
  box-shadow:0 1px 1px rgba(0,0,0,.18),0 24px 50px -20px rgba(28,25,23,.45);
  padding:12px 0 8px;font-size:.8rem;line-height:1.7;letter-spacing:.02em;
  color:var(--menu-text);
}
.pop-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:4px 14px}
.pop-title{font-weight:600;letter-spacing:.04em}
.pop-key{color:var(--menu-text-3);font-size:.76rem;margin-left:auto;margin-right:4px}
.pop-sep{border:0;border-top:1px solid rgba(255,255,255,.09);margin:9px 0}
.pop-label{padding:2px 14px;font-size:.7rem;color:var(--menu-text-2);font-weight:600}
.pop-item{
  width:calc(100% - 10px);display:block;border:0;background:none;font:inherit;color:inherit;
  margin-inline:5px;padding:4px 9px;border-radius:4px;
  cursor:pointer;text-align:left;letter-spacing:.03em;
}
.pop-item:hover{background:var(--menu-hl);color:var(--menu-on-hl)}
.switch{position:relative;width:38px;height:22px;flex:none;border:0;padding:0;background:none;cursor:pointer}
.switch i{position:absolute;inset:0;border-radius:11px;background:var(--menu-track);transition:background .25s ease}
.switch i::after{
  content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;
  background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.4);transition:transform .25s ease;
}
.switch[aria-checked="true"] i{background:var(--menu-accent)}
.switch[aria-checked="true"] i::after{transform:translateX(16px)}
.surfaces{list-style:none}
.surf-btn{
  width:calc(100% - 10px);display:flex;align-items:center;gap:9px;border:0;background:none;font:inherit;
  color:inherit;margin-inline:5px;padding:5px 9px;border-radius:4px;cursor:pointer;text-align:left;letter-spacing:.04em;
}
.surf-btn:hover{background:var(--menu-hl);color:var(--menu-on-hl)}
.surf-btn:hover .hint{color:var(--menu-on-hl)}
.check{width:7px;flex:none;opacity:0;font-size:.7rem}
.surf-btn[aria-checked="true"] .check{opacity:1}
.surf-btn[aria-checked="true"]{font-weight:600}
.hint{margin-left:auto;color:var(--menu-text-2);font-size:.72rem}
.slider-row{padding:6px 14px 4px;display:flex;align-items:center;gap:10px}
input[type=range]{-webkit-appearance:none;appearance:none;background:none;flex:1;height:18px;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{
  height:3px;border-radius:2px;
  background:linear-gradient(to right,var(--menu-accent) 0 var(--fill,55%),var(--menu-track) var(--fill,55%) 100%);
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:#fff;
  border:1px solid rgba(0,0,0,.35);box-shadow:0 1px 3px rgba(0,0,0,.35);margin-top:-5.5px;
}
input[type=range]::-moz-range-track{height:3px;border-radius:2px;background:var(--menu-track)}
input[type=range]::-moz-range-progress{height:3px;border-radius:2px;background:var(--menu-accent)}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border:1px solid rgba(0,0,0,.35);border-radius:50%;background:#fff}
.val{font-size:.7rem;color:var(--menu-text-2);width:2em;text-align:right;font-variant-numeric:tabular-nums}
.pop-note{margin:14px 0 0;max-width:280px;margin-left:auto;color:var(--ink-3);font-size:12.5px;line-height:1.7}

/* ---------- 読みもの ---------- */
.stage{padding:12px 0 72px;background:linear-gradient(180deg,#fff,var(--paper-2))}
.win{
  background:#fff;border-radius:18px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 30px 70px -36px rgba(28,25,23,.45);
}
.win-bar{
  height:40px;display:flex;align-items:center;gap:7px;padding:0 16px;
  background:#F6F4F1;border-bottom:1px solid var(--line);
}
.win-bar b{width:10px;height:10px;border-radius:50%;background:#D6D3D1;display:block}
.win-bar span{margin-inline:auto;font-size:12px;color:var(--ink-3);transform:translateX(-18px)}
.doc{padding:clamp(36px,6vw,72px) clamp(24px,7vw,96px) clamp(48px,7vw,80px);color:#1a1a1a}
.doc h4{font-family:var(--mincho);font-weight:500;font-size:clamp(1.35rem,2.4vw,1.85rem);letter-spacing:.04em;line-height:1.55;margin-bottom:1.1em}
.doc p{font-size:.95rem;line-height:2.05;max-width:42rem;margin-bottom:1.35em}
.doc .meta{font-size:.75rem;color:#8a8a8a;letter-spacing:.08em;margin-bottom:2em}
.doc hr{border:0;border-top:1px solid #E6E4E0;margin:2.2em 0;max-width:42rem}
.doc .sig{font-family:var(--mincho);color:#9a9a9a;font-size:.85rem;letter-spacing:.08em}

/* ---------- bands ---------- */
.band-dark{background:var(--navy);color:#F5F5F4}
.band-dark .lede{color:#D6D3D1}
.band-dark .eyebrow{color:#E7C7A4}
.band-dark .eyebrow::before{background:#E7C7A4}
.alt{background:var(--paper-2);border-block:1px solid var(--line)}

.roles{display:grid;gap:14px;margin-top:36px}
@media(min-width:860px){.roles{grid-template-columns:repeat(3,1fr)}}
.role{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);padding:22px 22px 20px;
}
.role dt{font-weight:800;margin-bottom:8px}
.role dd{color:#D6D3D1;font-size:14.5px;line-height:1.75}
.role.mine{background:#fff;color:var(--ink);border-color:#fff}
.role.mine dd{color:var(--ink-2)}
.cap{margin-top:22px;color:#A8A29E;font-size:13.5px;max-width:680px}

.fit{display:grid;gap:28px;margin-top:8px}
@media(min-width:860px){.fit{grid-template-columns:1.1fr .9fr;align-items:start}}
.pains{list-style:none;margin-top:22px;display:grid;gap:10px}
.pains li{
  display:flex;gap:10px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  font-size:14.5px;font-weight:600;
}
.pains li::before{content:"✓";color:var(--accent);font-weight:800;line-height:1.5}

.cards{display:grid;gap:16px;margin-top:36px}
@media(min-width:860px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
}
.card .name{font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--accent)}
.card p{color:var(--ink-2);font-size:14.5px;line-height:1.75}
.try{
  margin-top:auto;align-self:flex-start;border:1px solid var(--line);background:#fff;
  border-radius:999px;padding:8px 14px;cursor:pointer;font-size:13px;font-weight:700;color:var(--ink);
}
.try:hover{background:var(--paper-2)}
.try[aria-pressed="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}

.steps{display:grid;gap:16px;margin-top:36px}
@media(min-width:860px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.step .num{display:block;font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--accent);margin-bottom:10px}
.step p{margin-top:8px;color:var(--ink-2);font-size:14.5px;line-height:1.75}

.spec{display:grid;gap:14px;margin-top:36px}
@media(min-width:760px){.spec{grid-template-columns:1fr 1fr}}
.spec article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px 18px}
.spec p{margin-top:8px;color:var(--ink-2);font-size:14.5px;line-height:1.75}

.faq{margin-top:28px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:18px 4px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--ink-3);font-weight:500;font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 4px 18px;color:var(--ink-2);max-width:720px}

.closing{text-align:center;padding-block:96px}
.closing .lede,.closing .small{margin-inline:auto}
.closing .hero-actions{justify-content:center;margin-top:28px}
.closing .small{margin-top:16px}

footer{border-top:1px solid var(--line);padding:28px 0 36px;background:#fff;color:var(--ink-3);font-size:13px}
.foot{display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center}
.foot .brand{font-size:15px;margin-right:auto}
.foot .logo-mark{width:22px;height:22px}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 18px}
.foot a{text-decoration:none;color:var(--ink-3);font-weight:500}
.foot a:hover{color:var(--ink)}
.foot .copy a{font-weight:600;color:var(--ink-2)}

.page-head{padding:48px 0 8px}
.page-head h1{margin-top:8px}
.policy{display:grid;gap:28px;padding-bottom:72px;align-items:start}
@media(min-width:900px){.policy{grid-template-columns:200px minmax(0,1fr)}}
.toc{position:sticky;top:88px}
.toc b{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:12px}
.toc ol{list-style:none;display:grid;gap:8px}
.toc a{text-decoration:none;color:var(--ink-2);font-size:14px;font-weight:600}
.toc a:hover{color:var(--accent)}
.policy article h2{font-size:1.2rem;margin:1.8em 0 .5em}
.policy article h2 span{color:var(--accent);margin-right:.45em;font-size:.85em}
.policy article p,.policy article li{color:var(--ink-2);max-width:42rem}
.policy article ul{margin:.4em 0 1em 1.15em}
.policy article li{margin:.3em 0}
.summary{background:var(--accent-soft);border-radius:16px;padding:16px 18px;margin:18px 0 4px}
.summary li{color:var(--ink);font-weight:600}
.kv{width:min(100%,42rem);border-collapse:collapse;margin:12px 0 16px;font-size:14.5px}
.kv th,.kv td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
.kv th{width:9.5em;color:var(--ink);font-weight:700}

html[lang="en"]{--mincho:"Iowan Old Style",Palatino,"Palatino Linotype","Times New Roman",serif}
html[lang="en"] body{letter-spacing:0;line-height:1.7}
html[lang="en"] h1,html[lang="en"] h2{letter-spacing:-.03em}
html[lang="en"] .doc h4{letter-spacing:0;line-height:1.35}
html[lang="en"] .doc p{line-height:1.85}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}