/* Literature Decoded — site styles.
   Editorial identity: Instrument Serif (display) + Schibsted Grotesk (text), both
   OFL, self-hosted. Warm newsprint in light, ink-black in dark. Phone first,
   16 px gutters, no horizontal scroll. */

@font-face{font-family:"SD Display";src:url("/assets/fonts/instrument-serif-regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"SD Display";src:url("/assets/fonts/instrument-serif-italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"SD Text";src:url("/assets/fonts/schibsted-grotesk-variable.woff2") format("woff2");font-weight:400 900;font-style:normal;font-display:swap}

:root{
  --paper:#f3eee4; --paper-2:#ebe4d6; --card:#faf7f1; --ink:#17140f; --ink-2:#3b352c; --muted:#6c6458;
  --rule:#d6ccbb; --rule-strong:#17140f;
  --accent:#c23a1a; --accent-ink:#ffffff; --accent-soft:rgba(194,58,26,.1);
  --s-upper-limb:#b4532a; --s-hip-knee:#226b84; --s-trauma:#a42a2a; --s-spine:#4a51a3; --s-sports:#2f7d52; --s-perioperative:#8a6420;
  --display:"SD Display","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --text:"SD Text",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --gutter:16px; --max:1200px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#12100d; --paper-2:#1a1814; --card:#1c1a16; --ink:#efe8db; --ink-2:#d2cabc; --muted:#a0978a;
    --rule:#36312a; --rule-strong:#efe8db;
    --accent:#ff7d55; --accent-ink:#12100d; --accent-soft:rgba(255,125,85,.12);
    --s-upper-limb:#e98a5c; --s-hip-knee:#5fb3cf; --s-trauma:#ec6b62; --s-spine:#9aa2f0; --s-sports:#6cc792; --s-perioperative:#d9ad5b;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#12100d; --paper-2:#1a1814; --card:#1c1a16; --ink:#efe8db; --ink-2:#d2cabc; --muted:#a0978a;
  --rule:#36312a; --rule-strong:#efe8db;
  --accent:#ff7d55; --accent-ink:#12100d; --accent-soft:rgba(255,125,85,.12);
  --s-upper-limb:#e98a5c; --s-hip-knee:#5fb3cf; --s-trauma:#ec6b62; --s-spine:#9aa2f0; --s-sports:#6cc792; --s-perioperative:#d9ad5b;
  color-scheme:dark;
}
@media (min-width:720px){:root{--gutter:32px}}
@media (min-width:1100px){:root{--gutter:48px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-wrap:break-word}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.18em}
a:hover{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 12px;z-index:9}
.skip:focus{left:8px}

/* ── masthead ─────────────────────────────────────────── */
.strip{border-bottom:1px solid var(--rule);font:500 12px/1.4 var(--text);letter-spacing:.04em;color:var(--muted)}
.strip .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:8px;padding-bottom:8px}
.strip a{text-decoration:none;white-space:nowrap}
.strip .hide-s{display:none}
@media (min-width:720px){.strip .hide-s{display:inline}}
.mast{border-bottom:3px double var(--rule-strong)}
.mast .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;padding-bottom:12px}
.word{font:400 clamp(30px,8vw,52px)/.95 var(--display);letter-spacing:-.01em;text-decoration:none;color:var(--ink);white-space:nowrap}
.word em{font-style:italic;color:var(--accent)}
.word:hover{color:var(--ink)}
.tag{display:block;font:600 11px/1.2 var(--text);letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-top:6px}
.mast-tools{display:flex;align-items:center;gap:6px}
.icon-btn{appearance:none;border:1px solid var(--rule);background:transparent;color:var(--ink);width:40px;height:40px;border-radius:999px;display:inline-grid;place-items:center;cursor:pointer;text-decoration:none}
.icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.icon-btn svg{width:18px;height:18px}
.theme-btn .i-sun,.theme-btn .i-moon,.theme-btn .i-auto{display:none}
:root[data-theme="light"] .theme-btn .i-sun{display:block}
:root[data-theme="dark"] .theme-btn .i-moon{display:block}
:root:not([data-theme]) .theme-btn .i-auto{display:block}
.nav{border-bottom:1px solid var(--rule)}
.nav ul{list-style:none;margin:0 auto;display:flex;gap:4px 18px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px;padding-left:var(--gutter);padding-right:var(--gutter);font:600 13.5px/1.3 var(--text)}
.nav a{text-decoration:none;color:var(--ink-2);display:inline-flex;align-items:center;gap:7px;padding:4px 0}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--accent)}
.sq{width:9px;height:9px;display:inline-block;background:var(--sc,var(--accent));flex:none}
[data-sec="upper-limb"]{--sc:var(--s-upper-limb)} [data-sec="hip-knee"]{--sc:var(--s-hip-knee)} [data-sec="trauma"]{--sc:var(--s-trauma)}
[data-sec="spine"]{--sc:var(--s-spine)} [data-sec="sports"]{--sc:var(--s-sports)} [data-sec="perioperative"]{--sc:var(--s-perioperative)}

/* ── type ─────────────────────────────────────────────── */
.kicker{font:700 11.5px/1.3 var(--text);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.kicker .sq{background:var(--sc)}
.h-xl{font:400 clamp(36px,7.4vw,74px)/1.0 var(--display);letter-spacing:-.015em;margin:0 0 18px;text-wrap:balance}
.h-l{font:400 clamp(30px,5vw,46px)/1.05 var(--display);letter-spacing:-.01em;margin:0 0 12px;text-wrap:balance}
.h-m{font:400 clamp(24px,3.2vw,30px)/1.12 var(--display);margin:0 0 8px;text-wrap:balance}
.h-s{font:400 22px/1.15 var(--display);margin:0 0 6px;text-wrap:balance}
.lede{font:400 19px/1.55 var(--text);color:var(--ink-2);max-width:62ch;margin:0 0 16px}
.dek{font:italic 400 clamp(19px,2.3vw,23px)/1.4 var(--display);color:var(--ink-2);margin:0 0 14px;max-width:60ch}
.dek .who{display:block;font:600 12px/1.4 var(--text);font-style:normal;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.meta{font:500 13.5px/1.45 var(--text);color:var(--muted);margin:0;display:flex;flex-wrap:wrap;gap:2px 12px}
.meta cite{font-style:italic}
.eyebrow{font:700 12px/1.3 var(--text);letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}
.rule-h{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-top:2px solid var(--rule-strong);padding-top:10px;margin:0 0 18px}
.rule-h h2{font:400 clamp(26px,4vw,34px)/1.1 var(--display);margin:0}
.rule-h a{font:600 13.5px/1.3 var(--text);text-decoration:none;white-space:nowrap}
.rule-h a:hover{text-decoration:underline}

/* ── home: lead ───────────────────────────────────────── */
main{display:block}
.section{padding:28px 0 8px}
.lead{display:grid;gap:22px;padding:26px 0 30px;border-bottom:1px solid var(--rule)}
@media (min-width:900px){.lead{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:48px;align-items:center}}
.lead a.title-link{text-decoration:none}
.lead a.title-link:hover .h-xl{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:.08em}
.frame{margin:0;background:#fff;border:1px solid var(--rule);padding:10px}
.frame img{width:100%;aspect-ratio:16/10;object-fit:contain;background:#fff}
.frame figcaption{font:500 12px/1.4 var(--text);color:#5d564b;margin-top:8px}
.read-btn{display:inline-flex;align-items:center;gap:8px;margin-top:18px;background:var(--ink);color:var(--paper);text-decoration:none;font:700 14px/1 var(--text);padding:13px 18px;border-radius:999px}
.read-btn:hover{background:var(--accent);color:var(--accent-ink)}

/* ── cards ────────────────────────────────────────────── */
.grid{display:grid;gap:0 32px;grid-template-columns:minmax(0,1fr)}
@media (min-width:720px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{border-top:1px solid var(--rule);padding:18px 0 22px;position:relative}
.card a.cl{text-decoration:none;color:inherit;display:block}
.card a.cl:hover .h-s,.card a.cl:hover .h-m{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.12em}
.card .thumb{margin:0 0 14px;background:#fff;border:1px solid var(--rule)}
.card .thumb img{width:100%;aspect-ratio:16/10;object-fit:contain}
.card .ex{font:400 15.5px/1.5 var(--text);color:var(--ink-2);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.card .ex q{quotes:"“" "”"}

/* specialty blocks */
.specs{display:grid;gap:8px 32px;grid-template-columns:minmax(0,1fr)}
@media (min-width:720px){.specs{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.specs{grid-template-columns:repeat(3,minmax(0,1fr))}}
.spec{border-top:3px solid var(--sc);padding:14px 0 18px}
.spec h3{font:400 28px/1.1 var(--display);margin:0 0 4px}
.spec h3 a{text-decoration:none}
.spec p.blurb{font-size:14.5px;color:var(--muted);margin:0 0 12px}
.spec ol{list-style:none;margin:0;padding:0;counter-reset:n}
.spec li{counter-increment:n;border-top:1px solid var(--rule);padding:10px 0;display:grid;grid-template-columns:22px minmax(0,1fr);gap:8px}
.spec li::before{content:counter(n);font:400 20px/1.1 var(--display);color:var(--sc)}
.spec li a{text-decoration:none;font:500 15px/1.4 var(--text)}
.spec li a:hover{text-decoration:underline}
.spec li small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}
.spec .all{font:700 13px/1 var(--text);text-decoration:none;color:var(--sc);display:inline-block;margin-top:8px}

/* how it works */
.how{background:var(--ink);color:var(--paper);margin:34px 0 0;padding:40px 0 44px}
.how .eyebrow{color:var(--accent)}
:root[data-theme="dark"] .how{background:var(--paper-2);color:var(--ink)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .how{background:var(--paper-2);color:var(--ink)}}
.how h2{font:400 clamp(30px,5vw,48px)/1.05 var(--display);margin:0 0 24px;max-width:22ch}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:22px;grid-template-columns:minmax(0,1fr);counter-reset:s}
@media (min-width:720px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.steps li{counter-increment:s;border-top:1px solid currentColor;padding-top:12px;font-size:15.5px;line-height:1.55}
.steps li::before{content:counter(s,decimal-leading-zero);display:block;font:italic 400 34px/1 var(--display);color:var(--accent);margin-bottom:8px}
.steps b{display:block;font:700 16px/1.3 var(--text);margin-bottom:4px}
.how a{color:inherit}

/* journals */
.journals{columns:1;column-gap:32px;margin:0;padding:0;list-style:none;font-size:14.5px}
@media (min-width:720px){.journals{columns:2}}
@media (min-width:1100px){.journals{columns:3}}
.journals li{break-inside:avoid;border-top:1px solid var(--rule);padding:7px 0;display:flex;justify-content:space-between;gap:12px}
.journals li i{font-style:italic}
.journals li span{color:var(--muted);font-variant-numeric:tabular-nums}

/* ── page header (sections, static pages) ─────────────── */
.page-head{padding:34px 0 20px;border-bottom:1px solid var(--rule)}
.page-head .h-l{max-width:20ch}
.prose{max-width:68ch;padding:24px 0 40px}
.prose h2{font:400 30px/1.15 var(--display);margin:34px 0 10px}
.prose h3{font:700 17px/1.3 var(--text);margin:24px 0 6px}
.prose p,.prose li{font-size:17px}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:4px 0}
.callout{border-left:3px solid var(--accent);background:var(--accent-soft);padding:12px 16px;margin:18px 0}
.callout p{margin:0}
.table-wrap{overflow-x:auto;max-width:100%}
.prose table{border-collapse:collapse;font-size:15px;min-width:100%}
.prose th,.prose td{text-align:left;border-bottom:1px solid var(--rule);padding:8px 10px 8px 0;vertical-align:top}

/* forms */
.form{display:grid;gap:16px;max-width:560px;margin:8px 0 0}
.form label{display:grid;gap:6px;font:600 14px/1.3 var(--text)}
.form label small{font-weight:400;color:var(--muted)}
.form input,.form textarea,.form select{font:400 16px/1.4 var(--text);color:var(--ink);background:var(--card);border:1px solid var(--rule);border-radius:6px;padding:11px 12px;width:100%}
.form input:focus,.form textarea:focus,.form select:focus{border-color:var(--ink);outline:2px solid var(--accent-soft);outline-offset:0}
.form textarea{min-height:130px;resize:vertical}
.form .check{display:flex;gap:10px;align-items:flex-start;font-weight:400}
.form .check input{width:auto;margin-top:4px}
.btn{appearance:none;border:0;background:var(--ink);color:var(--paper);font:700 15px/1 var(--text);padding:14px 20px;border-radius:999px;cursor:pointer;justify-self:start}
.btn:hover{background:var(--accent);color:var(--accent-ink)}
.hp{position:absolute;left:-9999px}
.muted{color:var(--muted)}

/* search */
.search-box{padding:20px 0 48px}
#sd-search-fallback input{font:400 18px/1.4 var(--text);width:100%;padding:12px 14px;border:1px solid var(--rule);background:var(--card);color:var(--ink);border-radius:6px}
#sd-search-fallback ol{list-style:none;padding:0}
#sd-search-fallback li{border-top:1px solid var(--rule);padding:12px 0}
.pagefind-ui .pagefind-ui__search-clear{background:transparent;color:var(--muted);border:0;font:600 13px/1 var(--text)}
.pagefind-ui mark{background:var(--accent-soft);color:inherit;padding:0 2px}
.pagefind-ui{--pagefind-ui-scale:.9;--pagefind-ui-primary:var(--accent);--pagefind-ui-text:var(--ink);--pagefind-ui-background:var(--card);--pagefind-ui-border:var(--rule);--pagefind-ui-tag:var(--paper-2);--pagefind-ui-border-width:1px;--pagefind-ui-border-radius:6px;--pagefind-ui-font:var(--text)}

/* ── footer ───────────────────────────────────────────── */
.foot{border-top:3px double var(--rule-strong);margin-top:40px;padding:28px 0 48px;font-size:14px;color:var(--muted)}
.foot-grid{display:grid;gap:24px;grid-template-columns:minmax(0,1fr)}
@media (min-width:900px){.foot-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr)}}
.foot .word{font-size:34px}
.foot h2{font:700 12px/1.3 var(--text);letter-spacing:.16em;text-transform:uppercase;color:var(--ink);margin:4px 0 10px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot a{text-decoration:none}
.foot a:hover{text-decoration:underline}
.foot p{margin:8px 0;max-width:60ch}

/* 404 */
.nf{padding:60px 0 40px}
.nf .h-xl{font-size:clamp(64px,16vw,160px)}

@media (prefers-reduced-motion:no-preference){a,.btn,.icon-btn{transition:color .15s,background-color .15s,border-color .15s}}
@media print{.strip,.nav,.mast-tools,.foot,.how{display:none}}