:root{
  --paper:#f2efe8;
  --paper-2:#e9e4db;
  --ink:#181715;
  --muted:#756f68;
  --line:#cbc5ba;
  --line-strong:#9d968c;
  --accent:#c54832;
  --accent-soft:#f2dfd9;
  --good:#2e5a49;
  --good-soft:#e4ece8;
  --max-text:760px;
  --max-wide:1180px;
  --side:clamp(20px,5vw,72px);
  --header-h:56px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--paper);color:var(--ink)}
body{margin:0;min-width:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-size:18px;line-height:1.58;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
body.dialog-open{overflow:hidden}
button,a{font:inherit;color:inherit}
button{border:0;background:none}
a{text-decoration:none}
img{display:block;max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.reading-progress{position:fixed;z-index:1000;left:0;right:0;top:0;height:3px;background:transparent;pointer-events:none}
.reading-progress span{display:block;width:0;height:100%;background:var(--accent)}
.site-header{position:sticky;z-index:900;top:0;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:env(safe-area-inset-top) var(--side) 0;background:var(--paper);border-bottom:1px solid var(--line);transform:translateY(-100%);transition:transform .18s ease}
.site-header.is-visible{transform:translateY(0)}
.header-title{max-width:65vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px;font-weight:700;letter-spacing:-.01em}
.contents-button{min-width:44px;min-height:44px;padding:0 2px;cursor:pointer;font-size:13px;font-weight:700;border-bottom:1px solid var(--ink)}
.hero{min-height:min(82svh,760px);padding:clamp(56px,9vh,110px) var(--side) clamp(42px,8vh,86px);display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto 1fr auto;gap:22px;border-bottom:1px solid var(--line);position:relative}
.hero-index{grid-column:1/-1;font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--accent)}
.hero h1{grid-column:1/-1;align-self:center;margin:0;max-width:13ch;font-size:clamp(54px,14.5vw,150px);line-height:.86;letter-spacing:-.075em;font-weight:800}
.hero h1 span{display:block}
.hero-contents{grid-column:1/-1;justify-self:start;display:inline-flex;gap:10px;align-items:center;min-height:44px;font-size:14px;font-weight:700;border-bottom:1px solid var(--ink)}
.contents{padding:clamp(72px,12vw,150px) var(--side);border-bottom:1px solid var(--line)}
.contents>*,.chapter-panel-inner>*{max-width:var(--max-text);margin-left:auto;margin-right:auto}
.contents .section-label{font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.contents h2{margin:0 auto 34px;font-size:clamp(42px,7vw,78px);line-height:.95;letter-spacing:-.055em;font-weight:760}
.toc{max-width:var(--max-wide);margin:0 auto;border-top:1px solid var(--ink)}
.toc-link{width:100%;min-height:72px;padding:18px 0;display:grid;grid-template-columns:52px minmax(0,1fr) 36px;align-items:center;text-align:left;border-bottom:1px solid var(--line-strong);cursor:pointer;font-size:20px;font-weight:650;letter-spacing:-.02em}
.toc-link span:first-child{font-size:12px;color:var(--muted);letter-spacing:.08em}
.toc-link span:last-child{justify-self:end;color:var(--accent);font-size:22px}
.toc-link:hover .toc-link span:nth-child(2){color:var(--accent)}
.chapters{border-bottom:1px solid var(--line)}
.chapter{scroll-margin-top:calc(var(--header-h) + 14px);border-top:1px solid var(--line-strong)}
.chapter-toggle{width:100%;min-height:96px;padding:24px var(--side);display:grid;grid-template-columns:52px minmax(0,1fr) 52px;align-items:center;gap:12px;text-align:left;cursor:pointer;background:var(--paper)}
.chapter-number{font-size:12px;letter-spacing:.12em;font-weight:800;color:var(--accent)}
.chapter-name{font-size:clamp(29px,7.6vw,64px);line-height:.98;font-weight:760;letter-spacing:-.055em}
.chapter-symbol{justify-self:end;width:44px;height:44px;display:grid;place-items:center;font-size:30px;font-weight:300;transition:transform .18s ease;color:var(--accent)}
.chapter-toggle[aria-expanded="true"] .chapter-symbol{transform:rotate(45deg)}
.chapter-toggle:hover .chapter-name{color:var(--accent)}
.chapter-panel{display:grid;grid-template-rows:0fr;visibility:hidden;transition:grid-template-rows .26s cubic-bezier(.2,.75,.2,1),visibility 0s linear .26s;background:#f7f4ee}
.chapter-panel[aria-hidden="false"]{grid-template-rows:1fr;visibility:visible;transition:grid-template-rows .3s cubic-bezier(.2,.75,.2,1),visibility 0s}
.chapter-panel-inner{overflow:hidden;padding:0 var(--side)}
.chapter-panel[aria-hidden="false"] .chapter-panel-inner{padding-top:18px;padding-bottom:clamp(72px,10vw,132px)}
.chapter-copy{max-width:none!important;margin:0!important}
.chapter-copy>p,.chapter-copy>ul,.chapter-copy>ol,.chapter-copy>h3,.chapter-copy>h2{max-width:var(--max-text);margin-left:auto;margin-right:auto}
.chapter-copy p{margin-top:0;margin-bottom:1.15em}
.chapter-copy h3{margin-top:clamp(52px,7vw,82px);margin-bottom:20px;font-size:clamp(27px,5vw,42px);line-height:1.08;letter-spacing:-.04em;font-weight:760}
.chapter-copy h3:first-child{margin-top:18px}
.chapter-copy h2{margin-top:clamp(80px,11vw,140px);margin-bottom:24px;font-size:clamp(36px,6vw,58px);line-height:1;letter-spacing:-.05em;font-weight:760}
.chapter-copy ul,.chapter-copy ol{padding:0;margin-top:0;margin-bottom:30px;list-style:none}
.chapter-copy li{position:relative;padding:11px 0 11px 25px;border-bottom:1px solid var(--line);line-height:1.45}
.chapter-copy li::before{content:"—";position:absolute;left:0;color:var(--accent);font-weight:700}
.chapter-copy li p{margin:.25em 0}
.chapter-copy strong{font-weight:760}
.chapter-copy em{color:var(--muted)}
.chapter-copy del{text-decoration-color:var(--accent);text-decoration-thickness:2px}
.marker-bad,.marker-good{position:relative;padding-left:18px}
.marker-bad::before,.marker-good::before{content:"";position:absolute;left:0;top:.12em;bottom:.12em;width:4px;background:var(--accent)}
.marker-good::before{background:var(--good)}
.marker-good{color:var(--ink)}
.example-line{padding:20px 22px!important;background:var(--paper-2);border-left:4px solid var(--ink);margin-top:34px!important;margin-bottom:28px!important}
.remember-line{padding:26px 24px!important;background:var(--ink);color:var(--paper);font-size:1.08em;font-weight:700;margin-top:48px!important}
.carousel{max-width:var(--max-wide)!important;margin:32px auto 0!important;outline:none}
.carousel-viewport{overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;overscroll-behavior-inline:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y;padding:0 max(var(--side),calc((100vw - var(--max-wide))/2))}
.carousel-viewport::-webkit-scrollbar{display:none}
.carousel-track{display:flex;gap:14px;width:max-content}
.carousel-slide{scroll-snap-align:center;width:min(84vw,560px);margin:0;background:var(--paper)}
.carousel-slide img{width:100%;aspect-ratio:1/1;object-fit:contain;background:#ded9d1;border:1px solid var(--line)}
.carousel-slide figcaption{padding:12px 0 0;font-size:13px;color:var(--muted)}
.carousel-controls{max-width:var(--max-wide);margin:16px auto 0;display:flex;align-items:center;justify-content:flex-end;gap:10px;padding:0 var(--side)}
.carousel-arrow{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line-strong);cursor:pointer;font-size:20px;background:var(--paper)}
.carousel-arrow:hover{background:var(--ink);color:var(--paper)}
.carousel-counter{min-width:58px;text-align:center;font-size:12px;font-weight:750;color:var(--muted)}
.article-end{height:clamp(110px,16vw,220px);display:grid;place-items:center}
.article-end span{display:block;width:72px;height:2px;background:var(--accent)}
.contents-dialog{width:min(620px,calc(100vw - 24px));max-height:min(760px,calc(100dvh - 24px));padding:0;margin:auto;border:1px solid var(--ink);background:var(--paper);color:var(--ink)}
.contents-dialog::backdrop{background:rgba(24,23,21,.52)}
.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line-strong)}
.dialog-head h2{margin:0;font-size:30px;letter-spacing:-.04em}
.dialog-close{width:44px;height:44px;display:grid;place-items:center;font-size:30px;cursor:pointer}
.dialog-nav{padding:0 22px 22px}
.dialog-link{width:100%;min-height:62px;display:grid;grid-template-columns:44px 1fr;align-items:center;text-align:left;border-bottom:1px solid var(--line);cursor:pointer}
.dialog-link span:first-child{font-size:11px;color:var(--accent);font-weight:800;letter-spacing:.1em}
.dialog-link span:last-child{font-size:18px;font-weight:650}
@media (min-width:760px){
  :root{--header-h:64px}
  body{font-size:19px}
  .site-header{padding-left:max(var(--side),calc((100vw - var(--max-wide))/2));padding-right:max(var(--side),calc((100vw - var(--max-wide))/2))}
  .hero{padding-left:max(var(--side),calc((100vw - var(--max-wide))/2));padding-right:max(var(--side),calc((100vw - var(--max-wide))/2));min-height:86svh}
  .hero h1{font-size:clamp(76px,9vw,150px);max-width:10ch}
  .contents{padding-left:max(var(--side),calc((100vw - var(--max-wide))/2));padding-right:max(var(--side),calc((100vw - var(--max-wide))/2))}
  .contents>*,.contents h2{max-width:var(--max-wide)}
  .toc-link{min-height:88px;grid-template-columns:72px 1fr 52px;font-size:28px}
  .chapter-toggle{padding-left:max(var(--side),calc((100vw - var(--max-wide))/2));padding-right:max(var(--side),calc((100vw - var(--max-wide))/2));min-height:126px;grid-template-columns:72px 1fr 64px}
  .chapter-panel-inner{padding-left:max(var(--side),calc((100vw - var(--max-wide))/2));padding-right:max(var(--side),calc((100vw - var(--max-wide))/2))}
  .chapter-copy>h3.marker-bad,.chapter-copy>h3.marker-good{max-width:900px}
  .carousel-track{gap:22px}
  .carousel-slide{width:min(54vw,620px)}
  .carousel-controls{padding:0}
}
@media (min-width:1100px){
  .chapter-panel-inner{position:relative}
  .chapter-copy>p,.chapter-copy>ul,.chapter-copy>ol,.chapter-copy>h3{margin-left:calc((100% - var(--max-text))/2);margin-right:auto}
  .chapter-copy>h2{max-width:var(--max-wide);margin-left:auto;margin-right:auto}
  .chapter-copy>h3.marker-bad,.chapter-copy>h3.marker-good{margin-left:calc((100% - 900px)/2)}
  .example-line,.remember-line{max-width:860px!important}
}
@media (max-width:420px){
  body{font-size:17px}
  .hero{min-height:74svh}
  .hero h1{font-size:clamp(50px,14.3vw,62px)}
  .chapter-toggle{grid-template-columns:42px minmax(0,1fr) 44px;padding-top:21px;padding-bottom:21px}
  .chapter-name{font-size:clamp(28px,8vw,34px)}
  .toc-link{grid-template-columns:42px 1fr 30px;font-size:18px}
  .carousel-slide{width:86vw}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}