/* Book-support guide: photo opening, support plate beside handling, oxblood shelving sheets, numbered limits and native-details question board. */
.bk-page{--wine:#252c24;--paper:#f4efdf;--ink:#252c24;--apricot:#c5b08b}
.bk-width{width:min(1240px,88%);margin-inline:auto}
.bk-page h1{font-size:clamp(34px,3.8vw,58px);line-height:1.08;max-width:18ch}
.bk-page h2{font-size:clamp(28px,3vw,44px);line-height:1.12;max-width:20ch}
.bk-page h3{font-family:var(--display);font-size:clamp(24px,2.4vw,32px);line-height:1.2;margin:0 0 12px;letter-spacing:-.025em}
.bk-page p{max-width:66ch}
.bk-page ul,.bk-page ol{margin:0;padding-left:1.3em}
.bk-paper{background:#f9f5e9;color:var(--ink);border:1px solid #c3bea7;border-top:2px solid #fffdf8;box-shadow:3px 5px 0 #e0dac8,5px 9px 0 #c3bea7,0 25px 45px #252c2420}
.bk-number{display:block;font-family:var(--display);font-size:48px;line-height:1;color:var(--wine);margin-bottom:18px}
.bk-opening{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(32px,5vw,72px);align-items:center;padding-block:42px 64px;border-bottom:1px solid var(--line)}
.bk-photo,.bk-study{margin:0}
.bk-photo img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;border-top:2px solid #fffdf8;box-shadow:3px 5px 0 #e0dac8,5px 9px 0 #c3bea7,0 25px 45px #252c2420}
.bk-page figcaption{font-size:12px;line-height:1.6;padding-top:14px;max-width:62ch}
.bk-page figcaption a{display:inline-block;min-height:44px;align-content:center}
.bk-intro{font-size:clamp(18px,1.5vw,21px);margin-bottom:0}
.bk-reading{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:30px clamp(32px,6vw,88px);align-items:start;padding-block:72px}
.bk-study{padding:16px 16px 4px}
.bk-study img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.bk-study figcaption{padding:12px 4px}
.bk-rules{grid-column:1/-1;list-style:none;padding:26px 0 0!important;border-top:3px solid var(--wine);display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px 28px}
.bk-rules li,.bk-asks li{margin:0;padding-left:22px;border-left:3px solid var(--apricot);font-weight:650}
.bk-shelving{background:var(--wine);color:var(--paper);padding-block:72px}
.bk-shelving-grid{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:28px clamp(32px,5vw,72px);align-items:start}
.bk-shelving .bk-number{color:var(--apricot)}
.bk-sheets{grid-column:1/-1;list-style:none;padding:0!important;margin-top:16px!important;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.bk-sheets li{margin:0;padding:22px 24px;font-weight:650;border-top:6px solid var(--apricot)}
.bk-sheets li:nth-child(2){transform:translateY(14px)}
.bk-boundary{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:30px clamp(28px,5vw,72px);align-items:start;padding-block:72px}
.bk-limits{grid-column:1/-1;list-style:none;padding:0!important;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));counter-reset:bl;border-top:3px solid var(--wine)}
.bk-limits li{counter-increment:bl;padding:24px 24px 24px 0;margin:0;font-weight:650;border-right:1px solid var(--line)}
.bk-limits li+li{padding-left:24px}
.bk-limits li:last-child{border-right:0}
.bk-limits li:before{content:counter(bl,upper-roman);display:block;font:700 12px/1.4 Manrope,sans-serif;letter-spacing:.1em;color:var(--wine);margin-bottom:8px}
.bk-question{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:30px clamp(32px,6vw,88px);align-items:start;padding-block:24px 72px}
.bk-asks{list-style:none;padding:26px 0 0!important;border-top:3px solid var(--wine);display:grid;gap:14px}
.bk-board{grid-column:1/-1;padding:clamp(24px,3vw,44px);margin-top:20px;min-width:0}
.bk-board-intro p{font-size:16px}
.bk-details{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:22px 0 28px;align-items:start}
.bk-detail{min-width:0;border:1px solid #c3bea7;border-top:4px solid var(--wine);background:var(--paper);transition:box-shadow 560ms,background 560ms,transform 560ms}
.bk-detail summary{display:flex;align-items:center;min-height:56px;padding:12px 20px;cursor:pointer;font-family:var(--display);font-size:20px;line-height:1.25;letter-spacing:-.02em}
.bk-detail[open]{background:#fff;border-top-color:var(--apricot);box-shadow:0 3px 0 var(--apricot)}
.bk-detail p,.bk-detail blockquote{font-size:15px;line-height:1.7;margin-inline:20px}
.bk-detail blockquote{margin-block:0 20px;padding-left:14px;border-left:3px solid var(--apricot);font-weight:650}
.bk-tag{display:block;font:700 12px/1.4 Manrope,sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--wine);margin-bottom:4px}
.bk-board textarea{min-height:320px;max-width:100%;width:100%;box-sizing:border-box}
.bk-help{font-size:14px!important;line-height:1.75}
.bk-mail{display:inline-flex;align-items:center;min-height:48px;margin-block:8px}
.bk-related{display:grid;grid-template-columns:1fr 1.4fr;gap:50px;padding-block:60px;align-items:start}
.bk-related h2{font-size:30px}
.bk-related ul{list-style:none;padding:0!important}
.bk-related li{margin:0;border-bottom:1px solid var(--line)}
.bk-related a{display:block;padding-block:14px;min-height:48px;text-decoration:none;transition:transform 560ms}
.bk-closing{padding-inline:0}
.bk-closing .primary-action{white-space:normal;display:inline-block;max-width:100%}
.bk-page a:focus-visible,.bk-page summary:focus-visible{outline:3px solid #566a3c;outline-offset:5px;transform:translateY(-3px)}
.bk-page textarea:focus-visible{outline:3px solid #566a3c;outline-offset:3px}
.bk-shelving a:focus-visible,.bk-closing a:focus-visible{outline-color:var(--apricot)}
@media(hover:hover){.bk-detail:hover{transform:translateY(-3px)}.bk-related a:hover{transform:translateX(3px)}}
@media(min-width:1600px){.bk-width{width:min(1360px,86%)}}
@media(max-width:1000px){.bk-details,.bk-rules{grid-template-columns:1fr}.bk-boundary{grid-template-columns:1fr}}
@media(max-width:900px){.bk-opening,.bk-reading,.bk-shelving-grid,.bk-question,.bk-related{grid-template-columns:1fr;gap:28px}.bk-sheets,.bk-limits{grid-template-columns:1fr}.bk-sheets li:nth-child(2){transform:none}.bk-limits li,.bk-limits li+li{padding:18px 0;border-right:0;border-bottom:1px solid var(--line)}.bk-photo{max-width:620px}.bk-opening-text{order:-1}}
@media(max-width:600px){.bk-width{width:calc(100% - 48px)}.bk-opening{padding-block:28px 40px}.bk-page h1{font-size:34px;max-width:16ch}.bk-reading,.bk-boundary,.bk-shelving{padding-block:45px}.bk-question{padding-block:8px 45px}.bk-board{padding:22px 18px}.bk-number{font-size:40px}.bk-closing .email{font-size:clamp(20px,5.7vw,25px)}.bk-closing h2{font-size:34px}}
@media(prefers-reduced-motion:reduce){.bk-page a:focus-visible,.bk-page summary:focus-visible,.bk-detail:hover,.bk-related a:hover{transform:none}}
@media print{.bk-help{display:none}.bk-paper{box-shadow:none}.bk-shelving,.bk-closing{background:none!important;color:var(--ink)}}