/* ============================================================
   CINDER — theme site + help center design system
   Industrial / spec-sheet identity · Syne + Archivo · Signal red
   Shared by the landing page and the documentation.
   ============================================================ */
:root{
  --noir:#0a0b0c; --ink:#0e0f11; --panel:#131518; --panel-2:#181b1f; --elev:#1d2126;
  --paper:#f2efe8; --paper-2:#e8e4da; --paper-ink:#14130f;
  --tx:#f0f1f2; --tx-2:#a8afb6; --tx-3:#6d747b; --tx-on-paper:#1a1917; --tx-on-paper-2:#54524c;
  --line:#212528; --line-2:#2c3237; --line-paper:#d8d3c7;
  --signal:#ff3b30; --signal-2:#ff6a61; --signal-ink:#ff5147; --signal-soft:rgba(255,59,48,.12); --signal-line:rgba(255,59,48,.34);
  --disp:"Montserrat",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --sans:"Montserrat",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --gut:clamp(1.15rem,4.2vw,4rem); --maxw:1320px; --readw:74ch;
  --e:cubic-bezier(.4,0,.2,1); --d1:.18s; --d2:.34s;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--noir);color:var(--tx);font-family:var(--sans);font-size:16.5px;line-height:1.62;
  font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip;letter-spacing:.005em}
/* film grain overlay — part of the Cinder look */
body::before{content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}
::selection{background:var(--signal);color:#fff}
h1,h2,h3,h4{font-family:var(--disp);font-weight:800;line-height:1.02;letter-spacing:-.02em;margin:0;color:var(--tx)}
.mono{font-family:var(--mono)}
hr{border:0;border-top:1px solid var(--line);margin:0}

/* ---------- reusable atoms ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}
.eyebrow{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--tx-3);
  display:inline-flex;align-items:center;gap:.6em}
.eyebrow .dot{width:6px;height:6px;background:var(--signal);border-radius:50%;flex:0 0 auto}
.eyebrow .idx{color:var(--signal-2)}
.btn{display:inline-flex;align-items:center;gap:.6em;font-family:var(--mono);font-size:.8rem;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;padding:.95em 1.4em;border-radius:3px;border:1px solid var(--line-2);color:var(--tx);cursor:pointer;
  background:transparent;transition:background var(--d1) var(--e),color var(--d1) var(--e),border-color var(--d1) var(--e),transform var(--d1) var(--e)}
.btn:hover{border-color:var(--tx);transform:translateY(-1px)}
.btn--solid{background:var(--signal);border-color:var(--signal);color:#fff}
.btn--solid:hover{background:var(--signal-2);border-color:var(--signal-2)}
.btn--ghost{border-color:transparent;padding-inline:.4em}
.btn .ar{transition:transform var(--d1) var(--e)}
.btn:hover .ar{transform:translateX(3px)}
.badge{display:inline-block;font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  padding:.28em .6em;border-radius:3px;background:var(--panel-2);border:1px solid var(--line);color:var(--tx-2)}
.badge.sig{color:var(--signal-2);border-color:var(--signal-line);background:var(--signal-soft)}

/* corner registration marks (spec-sheet motif) */
.marks{position:relative}
.marks::before,.marks::after{content:"";position:absolute;width:14px;height:14px;pointer-events:none;opacity:.5}
.marks::before{top:10px;left:10px;border-top:1px solid var(--tx-3);border-left:1px solid var(--tx-3)}
.marks::after{bottom:10px;right:10px;border-bottom:1px solid var(--tx-3);border-right:1px solid var(--tx-3)}

/* ============ TOP NAV ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;height:64px;display:flex;align-items:center;gap:1rem;
  padding-inline:var(--gut);transition:background var(--d2) var(--e),border-color var(--d2) var(--e),backdrop-filter var(--d2);
  border-bottom:1px solid transparent}
.nav.solid{background:color-mix(in srgb,var(--noir) 82%,transparent);backdrop-filter:saturate(150%) blur(16px);border-bottom-color:var(--line)}
.nav .brand{display:flex;align-items:center;gap:.6rem;font-family:var(--disp);font-weight:800;font-size:1.16rem;letter-spacing:-.02em;color:var(--tx)}
.mk{width:28px;height:28px;border-radius:6px;flex:0 0 auto;display:block}
.nav .brand .mk{width:28px;height:28px}
.nav .brand small{font-family:var(--mono);font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--tx-3);margin-left:.15rem}
.nav .sp{flex:1}
.nav .links{display:flex;align-items:center;gap:.3rem}
.nav .links a{font-family:var(--mono);font-size:.76rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-2);padding:.5rem .8rem;border-radius:3px}
.nav .links a:hover{color:var(--tx);background:var(--panel)}
.nav .burger{display:none;width:42px;height:42px;border:1px solid var(--line-2);border-radius:4px;background:var(--panel);color:var(--tx);cursor:pointer;align-items:center;justify-content:center}
.nav .burger svg{width:18px;height:18px}
@media(max-width:860px){
  .nav .links{position:fixed;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--ink);
    border-bottom:1px solid var(--line);padding:.5rem var(--gut) 1rem;transform:translateY(-140%);transition:transform var(--d2) var(--e);z-index:-1}
  .nav .links.open{transform:none}
  .nav .links a{padding:.9rem .4rem;border-bottom:1px solid var(--line);font-size:.85rem}
  .nav .links .btn{margin-top:.6rem;justify-content:center}
  .nav .burger{display:flex}
  .nav .desk-btn{display:none}
}

/* ============ SECTIONS / SCHEME BANDS ============ */
.band{position:relative;padding-block:clamp(3.4rem,8vw,7rem)}
.band--noir{background:var(--noir)} .band--ink{background:var(--ink)} .band--panel{background:var(--panel)}
.band--paper{background:var(--paper);color:var(--tx-on-paper)}
.band--paper h1,.band--paper h2,.band--paper h3,.band--paper h4{color:var(--paper-ink)}
.band--paper .eyebrow{color:var(--tx-on-paper-2)} .band--paper .lead{color:var(--tx-on-paper-2)}
.band--paper .line{border-color:var(--line-paper)}
.band--signal{background:linear-gradient(120deg,var(--signal),#d92c22);color:#fff}
.band--signal h2,.band--signal h1{color:#fff}
.sec-head{max-width:64ch;margin-bottom:clamp(1.6rem,4vw,2.8rem)}
.sec-head h2{font-size:clamp(1.8rem,1.1rem + 2.6vw,3.1rem);margin:.5rem 0 .6rem}
.lead{font-size:clamp(1.02rem,.98rem + .4vw,1.22rem);color:var(--tx-2);line-height:1.55;max-width:60ch}
.line{border-top:1px solid var(--line);margin-block:2rem}

/* ============ HERO ============ */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;
  padding:6rem 0 2.4rem;overflow:hidden;background:
   radial-gradient(120% 90% at 82% 8%,rgba(255,59,48,.16),transparent 46%),
   radial-gradient(90% 70% at 6% 100%,rgba(255,255,255,.05),transparent 50%),var(--noir)}
.hero__grid{position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:clamp(60px,9vw,120px) clamp(60px,9vw,120px);mask-image:radial-gradient(120% 100% at 50% 0,#000 30%,transparent 78%)}
.hero__top{position:absolute;top:5.2rem;left:0;right:0}
.hero__spec{display:flex;justify-content:space-between;gap:1rem;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--tx-3);flex-wrap:wrap}
.hero__wm{position:relative;z-index:2;min-width:0;max-width:100%}
.hero h1{font-size:clamp(3rem,1rem + 12vw,10rem);line-height:.86;letter-spacing:-.04em;text-transform:uppercase;margin:.3rem 0}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero__sub{max-width:52ch;font-size:clamp(1.05rem,.98rem + .5vw,1.35rem);color:var(--tx-2);margin:1.3rem 0 0;line-height:1.5}
.hero__cta{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.8rem}
.hero__stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);
  margin-top:clamp(2rem,5vw,3.4rem);border-radius:4px;overflow:hidden}
.hero__stats .st{background:var(--noir);padding:1rem 1.1rem}
.hero__stats .n{font-family:var(--disp);font-weight:800;font-size:clamp(1.3rem,1rem + 1vw,1.9rem);letter-spacing:-.02em;display:block}
.hero__stats .l{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--tx-3);margin-top:.2rem}
@media(max-width:760px){.hero__stats{grid-template-columns:repeat(2,1fr)}.hero__stats .st:last-child{grid-column:1/-1}}
@media(max-width:600px){
  .hero h1{font-size:clamp(2.3rem,11vw,4.4rem);letter-spacing:-.03em}
  .settings td:first-child{white-space:normal}
  .settings th,.settings td{padding:.5rem .6rem}
}

/* ============ MARQUEE ============ */
.mq{overflow:hidden;border-block:1px solid var(--line);background:var(--ink);padding-block:1rem}
.mq__row{display:flex;gap:2.4rem;width:max-content;animation:mqmove 34s linear infinite;font-family:var(--disp);font-weight:800;
  font-size:clamp(1.2rem,.9rem + 1.6vw,2.1rem);text-transform:uppercase;letter-spacing:-.01em;color:var(--tx)}
.mq__row span{display:inline-flex;align-items:center;gap:2.4rem;white-space:nowrap}
.mq__row span::after{content:"";width:8px;height:8px;background:var(--signal);border-radius:50%}
@keyframes mqmove{to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.mq__row{animation:none}}

/* ============ FEATURE GRID (spec cards) ============ */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:5px;overflow:hidden}
.feat .cell{background:var(--noir);padding:clamp(1.4rem,3vw,2rem);position:relative;transition:background var(--d2) var(--e)}
.feat .cell:hover{background:var(--panel)}
.feat .num{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--signal-2);font-weight:600}
.feat .cell h3{font-size:1.28rem;margin:.9rem 0 .5rem;letter-spacing:-.01em}
.feat .cell p{color:var(--tx-2);font-size:.95rem;margin:0;line-height:1.5}
.feat .ic{width:26px;height:26px;color:var(--tx);position:absolute;top:clamp(1.4rem,3vw,2rem);right:clamp(1.4rem,3vw,2rem);opacity:.85}
.feat .ic svg{width:100%;height:100%}
@media(max-width:900px){.feat{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.feat{grid-template-columns:1fr}}

/* ============ SECTIONS LIBRARY ============ */
.lib{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:5px;overflow:hidden}
.lib .grp-h{grid-column:1/-1;background:var(--ink);padding:.7rem 1.1rem;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--tx-3);display:flex;align-items:center;gap:.6rem}
.lib .grp-h .c{color:var(--signal-2)}
.lib .it{background:var(--noir);padding:1.05rem 1.1rem;transition:background var(--d1) var(--e)}
.lib .it:hover{background:var(--panel)}
.lib .it .t{font-family:var(--disp);font-weight:700;font-size:1.02rem;color:var(--tx);display:flex;align-items:baseline;gap:.5rem}
.lib .it .tag{font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-3);border:1px solid var(--line-2);border-radius:3px;padding:.05em .35em;margin-left:auto}
.lib .it p{margin:.35rem 0 0;font-size:.86rem;color:var(--tx-2);line-height:1.45}

/* ============ FUNCTIONALITY BLOCKS ============ */
.fn{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.4rem,4vw,3.4rem);align-items:center;margin-block:clamp(2.4rem,6vw,4.6rem)}
.fn:nth-child(even) .fn__vis{order:2}
.fn__txt .eyebrow{margin-bottom:.7rem}
.fn__txt h3{font-size:clamp(1.5rem,1.1rem + 1.4vw,2.1rem);margin:0 0 .7rem;letter-spacing:-.02em}
.fn__txt p{color:var(--tx-2);margin:.6rem 0;max-width:52ch}
.fn__txt ul{padding-left:0;list-style:none;margin:1rem 0 0}
.fn__txt li{position:relative;padding-left:1.5rem;margin:.5rem 0;color:var(--tx-2);font-size:.95rem}
.fn__txt li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:1px;background:var(--signal)}
.fn__vis{position:relative;border:1px solid var(--line-2);border-radius:10px;overflow:hidden;background:var(--panel);box-shadow:0 24px 60px -30px rgba(0,0,0,.7)}
.fn__bar{display:flex;align-items:center;gap:.5rem;padding:.55rem .85rem;background:var(--ink);border-bottom:1px solid var(--line)}
.fn__bar .d{width:9px;height:9px;border-radius:50%;background:var(--line-2);flex:0 0 auto}
.fn__bar .d:first-child{background:var(--signal);opacity:.72}
.fn__bar em{margin:0 auto;font-family:var(--mono);font-style:normal;font-size:10.5px;letter-spacing:.03em;color:var(--tx-3);background:var(--noir);padding:.28em 1em;border-radius:5px;max-width:76%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fn__img{width:100%;height:auto;display:block}
/* live-theme showcase (browser frame) */
.showcase{margin:0;border:1px solid var(--line-2);border-radius:11px;overflow:hidden;background:var(--panel);box-shadow:0 40px 90px -34px rgba(0,0,0,.75)}
.showcase__bar{display:flex;align-items:center;gap:.5rem;padding:.62rem .95rem;background:var(--ink);border-bottom:1px solid var(--line)}
.showcase__bar .d{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.showcase__bar .d:first-child{background:var(--signal);opacity:.75}
.showcase__bar em{margin:0 auto;font-family:var(--mono);font-style:normal;font-size:11px;letter-spacing:.05em;color:var(--tx-3);background:var(--noir);padding:.28em 1.1em;border-radius:6px}
.showcase>img{width:100%;display:block}
@media(max-width:820px){.fn{grid-template-columns:1fr;gap:1.4rem}.fn:nth-child(even) .fn__vis{order:0}}

/* schematic mini-UIs inside functionality visuals */
.mini{position:absolute;inset:0;padding:2rem;display:flex;flex-direction:column;gap:.5rem}
.mini .bar{height:9px;border-radius:2px;background:var(--line-2)}
.mini .bar.sig{background:var(--signal)}
.mini .row{display:flex;gap:.5rem}
.mini .box{border:1px solid var(--line-2);border-radius:4px;background:var(--ink);flex:1;aspect-ratio:4/5}
.mini .box.f{background:linear-gradient(160deg,var(--panel-2),var(--ink))}
.mini .pill{border:1px solid var(--line-2);border-radius:999px;height:22px;padding:0 .7rem;display:inline-flex;align-items:center;font-family:var(--mono);font-size:9px;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-3)}
.mini .pill.on{background:var(--signal);border-color:var(--signal);color:#fff}

/* ============ CTA BAND ============ */
.cta{text-align:center;padding-block:clamp(3rem,8vw,6rem)}
.cta h2{font-size:clamp(2rem,1.2rem + 3vw,3.6rem);text-transform:uppercase;letter-spacing:-.03em;margin-bottom:1rem}
.cta .btn{background:#fff;border-color:#fff;color:#111}
.cta .btn:hover{background:transparent;color:#fff;border-color:#fff}

/* ============ CONTACT ============ */
.contact{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.6rem,5vw,4rem)}
.contact__info .big{font-family:var(--disp);font-weight:800;font-size:clamp(1.6rem,1.1rem + 2vw,2.6rem);text-transform:uppercase;letter-spacing:-.02em;line-height:1.02}
.contact__info p{color:var(--tx-2);max-width:44ch}
.info-rows{margin-top:1.6rem;border-top:1px solid var(--line)}
.info-rows .r{display:flex;gap:1rem;padding:.95rem 0;border-bottom:1px solid var(--line);align-items:baseline}
.info-rows .r .k{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--tx-3);width:8.5rem;flex:0 0 auto}
.info-rows .r .v{color:var(--tx);font-size:.98rem}
.info-rows .r a:hover{color:var(--signal-2)}
form.cform{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:clamp(1.3rem,3vw,2rem)}
.cform .fld{margin-bottom:1rem}
.cform label{display:block;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--tx-3);margin-bottom:.4rem}
.cform input,.cform textarea{width:100%;background:var(--noir);border:1px solid var(--line-2);border-radius:4px;color:var(--tx);
  font:inherit;font-size:.98rem;padding:.75rem .85rem;transition:border-color var(--d1) var(--e),box-shadow var(--d1) var(--e)}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--signal-line);box-shadow:0 0 0 3px var(--signal-soft)}
.cform textarea{resize:vertical;min-height:120px}
.cform input[type=file]{padding:.55rem .6rem;font-size:.85rem;color:var(--tx-2);cursor:pointer}
.cform input[type=file]::file-selector-button{background:var(--ink);border:1px solid var(--line-2);border-radius:4px;color:var(--tx);font:inherit;font-size:.8rem;padding:.35rem .8rem;margin-right:.8rem;cursor:pointer}
.cform .fld__opt{text-transform:none;letter-spacing:0;color:var(--tx-3);font-weight:400}
.cform .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.cform .btn{width:100%;justify-content:center;margin-top:.4rem}
.cform .msg{font-size:.9rem;margin-top:.8rem;min-height:1.2em}
.cform .msg.ok{color:#34d058}.cform .msg.err{color:var(--signal-2)}
@media(max-width:820px){.contact{grid-template-columns:1fr}}

/* ============ FOOTER ============ */
.foot{background:var(--ink);border-top:1px solid var(--line);padding-block:clamp(2.4rem,6vw,4rem) 2rem}
.foot__top{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;align-items:flex-start}
.foot__wm{font-family:var(--disp);font-weight:800;font-size:clamp(2.6rem,8vw,5rem);text-transform:uppercase;letter-spacing:-.03em;line-height:.9;color:var(--tx);opacity:.14}
.foot__links{display:flex;gap:2.4rem;flex-wrap:wrap}
.foot__links .col h5{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--tx-3);margin:0 0 .7rem}
.foot__links .col a{display:block;color:var(--tx-2);font-size:.92rem;padding:.2rem 0}
.foot__links .col a:hover{color:var(--tx)}
.foot__bot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2.4rem;padding-top:1.4rem;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-3)}

/* ---------- reveal on scroll ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s var(--e),transform .7s var(--e)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* =========================================================
   DOCUMENTATION-SPECIFIC (sidebar / content / search / toc)
   ========================================================= */
.doc-wrap{display:grid;grid-template-columns:288px minmax(0,1fr) 224px;max-width:1520px;margin:0 auto;align-items:start}
.doc-sb{position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto;overscroll-behavior:contain;padding:1.5rem 1rem 4rem 1.4rem;border-right:1px solid var(--line);scrollbar-width:thin}
.doc-sb::-webkit-scrollbar{width:7px}.doc-sb::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:8px}
.doc-ng{margin-bottom:1.5rem}
.doc-ng>.gt{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--tx-3);padding:0 .55rem;margin-bottom:.4rem;display:flex;gap:.5rem;align-items:center}
.doc-ng>.gt .n{color:var(--signal-2)}
.doc-ng a{display:block;padding:.35rem .6rem;border-radius:4px;color:var(--tx-2);font-size:.9rem;line-height:1.35;border-left:2px solid transparent;margin-left:.15rem}
.doc-ng a:hover{background:var(--panel);color:var(--tx)}
.doc-ng a.active{color:var(--tx);background:var(--signal-soft);border-left-color:var(--signal);font-weight:500}
.doc-main{padding:2.4rem var(--gut) 6rem;min-width:0;max-width:calc(var(--readw) + var(--gut) * 2)}
.doc-toc{position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto;padding:2.4rem 1.2rem 3rem;font-size:.83rem}
.doc-toc .tt{font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--tx-3);margin-bottom:.7rem}
.doc-toc a{display:block;padding:.24rem 0 .24rem .7rem;color:var(--tx-3);border-left:2px solid var(--line);line-height:1.4}
.doc-toc a:hover{color:var(--tx-2)}
.doc-toc a.active{color:var(--signal-2);border-left-color:var(--signal);font-weight:500}
.doc-toc a.l3{padding-left:1.4rem;font-size:.79rem}

.doc-main h2{font-family:var(--disp);font-size:clamp(1.5rem,1.1rem + 1.4vw,2.1rem);letter-spacing:-.02em;margin:0 0 .5rem;scroll-margin-top:90px}
.doc-main h3{font-family:var(--disp);font-size:1.28rem;font-weight:700;margin:2.4rem 0 .5rem;scroll-margin-top:84px}
.doc-main h4{font-family:var(--disp);font-size:1.06rem;font-weight:700;margin:1.6rem 0 .4rem;scroll-margin-top:84px}
.doc-main p{margin:.7rem 0;max-width:var(--readw)}
.doc-main ul,.doc-main ol{max-width:var(--readw);padding-left:1.3rem;margin:.7rem 0}
.doc-main li{margin:.32rem 0}.doc-main li::marker{color:var(--tx-3)}
.doc-sec{padding-top:1.2rem;margin-bottom:2rem}
.doc-sec:not(:first-of-type){margin-top:3.4rem;border-top:1px solid var(--line);padding-top:2.8rem}
code{font-family:var(--mono);font-size:.85em;background:var(--panel-2);border:1px solid var(--line);padding:.12em .42em;border-radius:4px;color:var(--tx);white-space:nowrap}
kbd{font-family:var(--mono);font-size:.78em;background:var(--elev);border:1px solid var(--line-2);border-bottom-width:2px;padding:.15em .5em;border-radius:4px;color:var(--tx-2)}
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1rem 0;border:1px solid var(--line);border-radius:5px}
table.settings{width:100%;border-collapse:collapse;font-size:.92rem}
.settings th,.settings td{text-align:left;padding:.62rem .85rem;border-bottom:1px solid var(--line);vertical-align:top}
.settings thead th{background:var(--panel-2);font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-3);font-weight:600;white-space:nowrap}
.settings tbody tr:last-child td{border-bottom:0}
.settings td:first-child{font-family:var(--mono);font-size:.82rem;color:var(--tx);white-space:nowrap}
.settings td code{background:none;border:0;padding:0}
.note{border:1px solid var(--line);border-left:3px solid var(--tx-3);background:var(--panel);border-radius:5px;padding:.85rem 1rem;margin:1.2rem 0;font-size:.94rem}
.note.tip{border-left-color:#34d058}.note.warn{border-left-color:#ffcc00}.note.acc{border-left-color:var(--signal)}.note.info{border-left-color:#3b82f6}
.note .nt{font-family:var(--mono);font-weight:600;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:.15rem;color:var(--tx-2)}
.note.tip .nt{color:#34d058}.note.warn .nt{color:#ffcc00}.note.acc .nt{color:var(--signal-2)}.note.info .nt{color:#60a5fa}
.note p{margin:.25rem 0;max-width:none}
.steps{counter-reset:st;list-style:none;padding:0;margin:1.1rem 0;max-width:var(--readw)}
.steps>li{counter-increment:st;position:relative;padding:.15rem 0 1.1rem 2.6rem;border-left:1px solid var(--line);margin-left:.85rem}
.steps>li:last-child{border-left-color:transparent}
.steps>li::before{content:counter(st,decimal-leading-zero);position:absolute;left:-.9rem;top:-.1rem;width:1.8rem;height:1.8rem;border-radius:50%;background:var(--noir);border:1px solid var(--line-2);color:var(--tx);display:grid;place-items:center;font-family:var(--mono);font-size:.72rem;font-weight:600}
.steps>li b{color:var(--tx)}
.sec-ref{border:1px solid var(--line);border-radius:5px;margin:.9rem 0;overflow:hidden;background:var(--panel)}
.sec-ref>summary{cursor:pointer;padding:.85rem 1rem;display:flex;align-items:center;gap:.6rem;font-weight:600;list-style:none;color:var(--tx);font-family:var(--disp)}
.sec-ref>summary::-webkit-details-marker{display:none}
.sec-ref>summary .tag{font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-3);border:1px solid var(--line);border-radius:3px;padding:.1em .45em}
.sec-ref>summary .chev{margin-left:auto;color:var(--tx-3);transition:transform var(--d1) var(--e)}
.sec-ref[open]>summary .chev{transform:rotate(90deg)}
.sec-ref>summary:hover{background:var(--panel-2)}
.sec-ref .body{padding:.2rem 1rem 1.1rem;border-top:1px solid var(--line);font-size:.94rem;color:var(--tx-2)}
.doc-hero{border:1px solid var(--line);border-radius:6px;background:radial-gradient(120% 140% at 100% 0,var(--signal-soft),transparent 55%),var(--panel);padding:clamp(1.5rem,4vw,2.6rem);margin-bottom:1.6rem}
.doc-hero h1{font-family:var(--disp);font-weight:800;font-size:clamp(2rem,1.2rem + 3vw,3rem);letter-spacing:-.03em;text-transform:uppercase;margin:.4rem 0 .4rem}
.faq{border-bottom:1px solid var(--line)}
.faq>summary{cursor:pointer;padding:1rem .2rem;font-weight:600;color:var(--tx);list-style:none;display:flex;gap:.7rem;font-family:var(--disp)}
.faq>summary::-webkit-details-marker{display:none}
.faq>summary::before{content:"+";font-family:var(--mono);color:var(--signal-2);font-weight:700;font-size:1.1rem;line-height:1.35}
.faq[open]>summary::before{content:"–"}
.faq .fa{padding:0 .2rem 1.1rem 1.6rem;color:var(--tx-2);font-size:.95rem;max-width:var(--readw)}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.8rem;margin:1.2rem 0}
.card{border:1px solid var(--line);border-radius:5px;padding:1rem;background:var(--panel);transition:border-color var(--d1) var(--e),transform var(--d1) var(--e)}
a.card:hover{border-color:var(--signal-line);transform:translateY(-2px)}
.card .ct{font-family:var(--disp);font-weight:700;color:var(--tx);margin-bottom:.15rem}
.card .cd{font-size:.86rem;color:var(--tx-2);line-height:1.45}

/* search modal */
.sr-back{position:fixed;inset:0;z-index:400;background:rgba(0,0,0,.6);backdrop-filter:blur(3px);display:none;padding:8vh 1rem 1rem}
.sr-back.open{display:block}
.sr-box{max-width:640px;margin:0 auto;background:var(--elev);border:1px solid var(--line-2);border-radius:8px;overflow:hidden;box-shadow:0 24px 70px -20px rgba(0,0,0,.7)}
.sr-in{display:flex;align-items:center;gap:.6rem;padding:.9rem 1rem;border-bottom:1px solid var(--line)}
.sr-in svg{width:19px;height:19px;color:var(--tx-3);flex:0 0 auto}
.sr-in input{flex:1;border:0;background:none;color:var(--tx);font:inherit;font-size:1.05rem;outline:none}
.sr-in .esc{font-family:var(--mono);font-size:11px;border:1px solid var(--line-2);border-radius:4px;padding:.15em .45em;color:var(--tx-3)}
.sr-res{max-height:56vh;overflow-y:auto;padding:.4rem}
.sr-res a{display:block;padding:.6rem .8rem;border-radius:5px;color:var(--tx);border:1px solid transparent}
.sr-res a:hover,.sr-res a.sel{background:var(--panel);border-color:var(--line)}
.sr-res .rc{font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-3);margin-bottom:.15rem}
.sr-res .rt{font-family:var(--disp);font-weight:700;font-size:.98rem}
.sr-res .rx{font-size:.85rem;color:var(--tx-2);line-height:1.4;margin-top:.15rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr-res mark{background:var(--signal-soft);color:var(--signal-2);border-radius:2px;padding:0 .1em}
.sr-empty{padding:1.6rem;text-align:center;color:var(--tx-3);font-size:.92rem}
.sr-hint{padding:.55rem 1rem;border-top:1px solid var(--line);display:flex;gap:1.2rem;font-size:.78rem;color:var(--tx-3);flex-wrap:wrap}
.doc-searchbtn{display:flex;align-items:center;gap:.5rem;height:38px;padding:0 .5rem 0 .8rem;background:var(--panel);border:1px solid var(--line);border-radius:5px;color:var(--tx-3);cursor:text;font-family:var(--mono);font-size:.78rem;letter-spacing:.04em}
.doc-searchbtn:hover{border-color:var(--line-2)}
.doc-searchbtn svg{width:15px;height:15px}
.doc-searchbtn .k{border:1px solid var(--line-2);border-radius:4px;padding:.1em .4em;font-size:10px}
.doc-top-link{font-family:var(--mono);font-size:.76rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--tx-2);padding:.5rem .7rem;border-radius:4px;white-space:nowrap;display:inline-flex;gap:.4em;align-items:center}
.doc-top-link:hover{color:var(--tx);background:var(--panel)}
.doc-top-link .ar{transition:transform var(--d1) var(--e)}
.doc-top-link:hover .ar{transform:translateX(3px)}
@media(max-width:640px){
  .doc-searchbtn .sl,.doc-searchbtn .k{display:none}
  .doc-searchbtn{padding:0;width:38px;justify-content:center}
  .doc-top-link{display:none}
}

/* mobile sidebar drawer for docs */
.sb-back{position:fixed;inset:0;z-index:150;background:rgba(0,0,0,.55);display:none}
.sb-back.open{display:block}
@media(max-width:1180px){.doc-wrap{grid-template-columns:288px minmax(0,1fr)}.doc-toc{display:none}}
@media(max-width:900px){
  .doc-wrap{grid-template-columns:1fr}
  .doc-sb{position:fixed;top:0;left:0;height:100vh;width:min(320px,86vw);z-index:180;background:var(--ink);border-right:1px solid var(--line-2);transform:translateX(-102%);transition:transform var(--d2) var(--e);padding-top:1rem}
  .doc-sb.open{transform:none}
  .doc-mnav{display:flex}
}
.doc-mnav{display:none}
@media(min-width:901px){.sb-back{display:none!important}}