:root{
  --ink:#081826;--ink-soft:#20364b;--blue:#1B4DB1;--blue-bright:#3B76E8;
  --paper:#fff;--paper-2:#F7F9FC;--line:#E7EDF4;--slate:#5D6E80;
  --font-d:"Fraunces",Georgia,serif;--font-b:"Inter",system-ui,sans-serif;--font-m:"IBM Plex Mono",monospace;
  --gutter:clamp(22px,5vw,64px);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-b);color:var(--ink);line-height:1.65;background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}
.wrap{max-width:1240px;margin:0 auto;padding:0 var(--gutter)}
.measure{max-width:640px}
.eyebrow{font-family:var(--font-m);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--blue)}
h1,h2,h3{font-family:var(--font-d);font-weight:500;line-height:1.08;letter-spacing:-.015em}
:focus-visible{outline:3px solid var(--blue-bright);outline-offset:3px}

.btn{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--font-b);font-weight:500;font-size:.92rem;padding:.95rem 1.7rem;border-radius:2px;border:1px solid transparent;cursor:pointer;transition:.25s}
.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--ink)}
.btn-line{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}.btn-line:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-dark{background:transparent;border-color:var(--line);color:var(--ink)}.btn-dark:hover{border-color:var(--blue);color:var(--blue)}
.arrowlink{font-family:var(--font-m);font-size:.8rem;letter-spacing:.05em;color:var(--blue);display:inline-flex;gap:.5rem;align-items:center;transition:gap .25s}.arrowlink:hover{gap:.9rem}

/* header */
header{position:fixed;top:0;left:0;right:0;z-index:60;transition:.35s}
.nav{display:flex;align-items:center;justify-content:space-between;height:82px}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--font-d);font-weight:600;font-size:1.3rem;color:#fff;transition:color .35s}
.brand .mk{width:34px;height:34px;border:1.5px solid currentColor;display:grid;place-items:center;font-family:var(--font-m);font-size:.72rem}
.brand small{display:block;font-family:var(--font-m);font-size:.56rem;letter-spacing:.2em;font-weight:400;opacity:.7;margin-top:1px}
.navlinks{display:flex;gap:2.2rem;font-size:.9rem;font-weight:500;color:rgba(255,255,255,.9);transition:color .35s}
.navlinks a:hover{opacity:.65}
header.solid{background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.solid .brand,header.solid .navlinks{color:var(--ink)}
header.solid .btn-line{border-color:var(--line);color:var(--ink)}
header.solid .btn-line:hover{border-color:var(--blue);color:var(--blue)}
.burger{display:none;width:46px;height:42px;border:1px solid rgba(255,255,255,.35);background:none;flex-direction:column;gap:5px;align-items:center;justify-content:center;cursor:pointer}
.burger span{width:20px;height:1.5px;background:#fff}
header.solid .burger{border-color:var(--line)}header.solid .burger span{background:var(--ink)}
/* solid-from-load variant for interior pages with light heros */
header.lightpage{background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.lightpage .brand,header.lightpage .navlinks{color:var(--ink)}
header.lightpage .btn-line{border-color:var(--line);color:var(--ink)}
header.lightpage .burger{border-color:var(--line)}header.lightpage .burger span{background:var(--ink)}

/* ---------- HOME ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:flex-end;color:#fff;overflow:hidden}
.hero .bg{position:absolute;inset:0;background:#081826 center/cover no-repeat}
.hero .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,24,38,.55) 0%,rgba(8,24,38,.2) 30%,rgba(8,24,38,.85) 100%)}
.hero-inner{position:relative;padding-bottom:clamp(56px,9vh,110px);padding-top:140px;width:100%}
.hero h1{font-size:clamp(2.9rem,7.5vw,6.4rem);font-weight:400;max-width:16ch}
.hero .sub{margin-top:1.6rem;font-size:clamp(1.05rem,1.7vw,1.3rem);max-width:52ch;color:rgba(255,255,255,.86)}
.hero .cta{margin-top:2.6rem;display:flex;gap:1rem;flex-wrap:wrap}
.hero .scrollnote{position:absolute;right:var(--gutter);bottom:clamp(56px,9vh,110px);font-family:var(--font-m);font-size:.68rem;letter-spacing:.2em;writing-mode:vertical-rl;opacity:.6}
.manifesto{padding:clamp(120px,20vh,260px) 0;text-align:center}
.manifesto h2{font-size:clamp(2rem,5.2vw,4.4rem);font-weight:400;max-width:20ch;margin:0 auto;line-height:1.08}
.manifesto h2 em{font-style:italic;color:var(--blue)}
.manifesto .eyebrow{display:block;margin-bottom:2.4rem}
.approach{padding:clamp(80px,10vw,150px) 0;border-top:1px solid var(--line)}
.approach .head{max-width:640px;margin-bottom:clamp(48px,7vw,96px)}
.approach h2{font-size:clamp(1.9rem,4vw,3.2rem);font-weight:400;margin-top:1.2rem}
.arow{display:grid;grid-template-columns:120px 1fr 1.1fr;gap:clamp(20px,4vw,60px);padding:clamp(34px,4vw,52px) 0;border-top:1px solid var(--line);align-items:baseline}
.arow:last-child{border-bottom:1px solid var(--line)}
.arow .idx{font-family:var(--font-m);font-size:.85rem;color:var(--blue)}
.arow h3{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:500}
.arow p{color:var(--slate);font-size:1.02rem;max-width:46ch}
.band{position:relative;min-height:82vh;display:flex;align-items:center;color:#fff;text-align:center;overflow:hidden}
.band .bg{position:absolute;inset:0;background:#0d2038 center/cover no-repeat}
.band .bg::after{content:"";position:absolute;inset:0;background:rgba(8,24,38,.6)}
.band .inner{position:relative;width:100%;padding:80px 0}
.band .eyebrow{color:rgba(255,255,255,.75)}
.band h2{font-size:clamp(2rem,5vw,4rem);font-weight:400;max-width:18ch;margin:1.6rem auto 0}
.band p{margin:1.5rem auto 0;max-width:44ch;color:rgba(255,255,255,.8);font-size:1rem}
.stack{padding:clamp(90px,11vw,160px) 0}
.stack .head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:24px;margin-bottom:clamp(40px,6vw,80px)}
.stack h2{font-size:clamp(1.9rem,4vw,3.2rem);font-weight:400;max-width:14ch;margin-top:1.1rem}
.idx-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 clamp(40px,6vw,90px)}
.idx-item{display:flex;gap:1.4rem;align-items:baseline;padding:1.5rem 0;border-top:1px solid var(--line);transition:.25s}
.idx-item:hover{padding-left:.6rem}
.idx-item .no{font-family:var(--font-m);font-size:.78rem;color:var(--blue);min-width:2.2ch}
.idx-item .t{font-family:var(--font-d);font-size:clamp(1.15rem,1.7vw,1.4rem);font-weight:500}
.idx-item .d{display:block;font-family:var(--font-b);font-size:.84rem;color:var(--slate);margin-top:.15rem}
.idx-item .go{margin-left:auto;color:var(--blue);opacity:0;transform:translateX(-6px);transition:.25s;font-family:var(--font-m);font-size:.85rem}
.idx-item:hover .go{opacity:1;transform:none}
.gallery{padding:clamp(80px,10vw,150px) 0;background:var(--paper-2);border-top:1px solid var(--line)}
.gallery .head{max-width:620px;margin-bottom:clamp(40px,6vw,72px)}
.gallery h2{font-size:clamp(1.9rem,4vw,3.2rem);font-weight:400;margin-top:1.1rem}
.gal{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:150px;gap:14px}
.gcell{position:relative;overflow:hidden;background:#0d2038 center/cover no-repeat;border-radius:2px;transition:.5s}
.gcell:hover{transform:scale(.99)}
.gcell::after{content:attr(data-cap);position:absolute;left:16px;bottom:14px;color:#fff;font-family:var(--font-m);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;opacity:0;transition:.3s;z-index:2}
.gcell::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(8,24,38,.7));opacity:0;transition:.3s}
.gcell:hover::after,.gcell:hover::before{opacity:1}
.g-a{grid-column:span 3;grid-row:span 2}.g-b{grid-column:span 3}.g-c{grid-column:span 2}
.g-d{grid-column:span 2}.g-e{grid-column:span 2}.g-f{grid-column:span 3}
.quote{background:var(--ink);color:#fff;padding:clamp(110px,16vh,220px) 0;text-align:center}
.quote h2{font-size:clamp(1.8rem,4.4vw,3.6rem);font-weight:400;font-style:italic;max-width:22ch;margin:0 auto;line-height:1.14}
.quote .who{font-family:var(--font-m);font-size:.76rem;letter-spacing:.16em;color:rgba(255,255,255,.55);margin-top:2.4rem}
.res{padding:clamp(90px,11vw,160px) 0}
.res .head{max-width:620px}
.res-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,60px);margin-top:clamp(40px,5vw,70px)}
.res-card{border:1px solid var(--line);padding:clamp(32px,4vw,52px);transition:.3s;background:#fff}
.res-card:hover{border-color:var(--blue);transform:translateY(-4px)}
.res-card .eyebrow{margin-bottom:1.4rem;display:block}
.res-card h3{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:500}
.res-card p{color:var(--slate);margin:1rem 0 1.8rem;max-width:44ch}

/* contact */
.contact{padding:clamp(90px,11vw,160px) 0;background:var(--ink);color:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,90px);align-items:start}
.contact h2{font-size:clamp(2rem,4.5vw,3.4rem);font-weight:400;max-width:14ch}
.contact .measure{color:rgba(255,255,255,.78);margin-top:1.4rem}
.contact .lines{margin-top:2.6rem}
.cline{display:flex;gap:1.4rem;padding:1.1rem 0;border-top:1px solid rgba(255,255,255,.12);font-size:.95rem}
.cline .k{font-family:var(--font-m);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-bright);min-width:8ch}
form label{display:block;font-family:var(--font-m);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.6);margin:1.3rem 0 .5rem}
form input,form select,form textarea{width:100%;padding:.9rem 1rem;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.16);color:#fff;font-family:var(--font-b);font-size:.95rem;border-radius:2px}
form input:focus,form select:focus,form textarea:focus{outline:none;border-color:var(--blue-bright)}
form .btn{margin-top:1.8rem}
.formrow{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
#fmsg{display:none;margin-top:1rem;color:#7fd8b0;font-size:.9rem}

/* footer */
footer{background:#050f19;color:rgba(255,255,255,.55);padding:clamp(60px,8vw,100px) 0 40px;font-size:.9rem}
.fgrid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:40px}
footer h4{color:#fff;font-family:var(--font-m);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:1.2rem;font-weight:500}
footer a{display:block;padding:.35rem 0;color:rgba(255,255,255,.55);transition:.2s}footer a:hover{color:#fff}
.fbrand{font-family:var(--font-d);font-size:1.6rem;color:#fff;font-weight:600}
.fbot{border-top:1px solid rgba(255,255,255,.1);margin-top:clamp(48px,6vw,72px);padding-top:28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-family:var(--font-m);font-size:.72rem;letter-spacing:.05em}

/* ---------- INTERIOR PAGE HERO ---------- */
.phero{position:relative;min-height:74vh;display:flex;align-items:flex-end;color:#fff;overflow:hidden}
.phero.short{min-height:60vh}
.phero .bg{position:absolute;inset:0;background:#081826 center/cover no-repeat}
.phero .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,24,38,.6),rgba(8,24,38,.35) 35%,rgba(8,24,38,.9))}
.phero-in{position:relative;padding:150px 0 clamp(50px,8vh,90px);width:100%}
.crumb{font-family:var(--font-m);font-size:.74rem;letter-spacing:.1em;color:rgba(255,255,255,.7);margin-bottom:1.6rem}
.crumb a:hover{color:#fff}
.phero h1{font-size:clamp(2.6rem,6vw,5rem);font-weight:400;max-width:16ch}
.phero .lead{margin-top:1.4rem;max-width:56ch;font-size:1.15rem;color:rgba(255,255,255,.85)}

/* ---------- ARTICLE ---------- */
.article{padding:clamp(70px,9vw,130px) 0}
.acols{display:grid;grid-template-columns:220px 1fr;gap:clamp(40px,6vw,90px);align-items:start}
.toc{position:sticky;top:110px;font-size:.9rem}
.toc .eyebrow{display:block;margin-bottom:1.2rem}
.toc a{display:block;padding:.5rem 0 .5rem 1rem;color:var(--slate);border-left:2px solid var(--line);transition:.2s}
.toc a:hover{color:var(--blue);border-color:var(--blue)}
.prose h2{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:500;margin:0 0 1rem}
.prose > section{padding:clamp(40px,5vw,70px) 0;border-top:1px solid var(--line)}
.prose > section:first-child{border-top:0;padding-top:0}
.prose p{color:var(--ink-soft);font-size:1.06rem;margin-bottom:1.1rem;max-width:64ch}
.prose p.big{font-size:1.3rem;color:var(--ink);font-family:var(--font-d);font-weight:400;line-height:1.5;max-width:36ch}
.prose h3{font-size:1.25rem;font-weight:600;font-family:var(--font-b);margin:1.8rem 0 .6rem}
.prose ul{margin:0 0 1.2rem 0;list-style:none;max-width:64ch}
.prose li{padding:.4rem 0 .4rem 1.6rem;position:relative;color:var(--ink-soft)}
.prose li::before{content:"—";position:absolute;left:0;color:var(--blue)}
.callout{background:var(--paper-2);border-left:3px solid var(--blue);padding:1.4rem 1.6rem;margin:1.6rem 0;font-size:.98rem}
.callout .lab{font-family:var(--font-m);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);display:block;margin-bottom:.4rem}
.brandtable{width:100%;border-collapse:collapse;margin:1.4rem 0;font-size:.92rem}
.brandtable th{text-align:left;font-family:var(--font-m);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--slate);padding:.7rem 1rem .7rem 0;border-bottom:1px solid var(--line);vertical-align:top;width:26%}
.brandtable td{padding:.7rem 0;border-bottom:1px solid var(--line);color:var(--ink-soft)}
.spec-inline{display:flex;gap:1.4rem;flex-wrap:wrap;margin:1.4rem 0}
.spec-inline .s{border-left:2px solid var(--blue);padding-left:.8rem}
.spec-inline .s b{display:block;font-family:var(--font-d);font-size:1.3rem;color:var(--ink);font-weight:500}
.spec-inline .s span{color:var(--slate);font-family:var(--font-m);font-size:.78rem}

.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:1.2rem 0;font-family:var(--font-d);font-size:1.15rem;font-weight:500;display:flex;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary .c{margin-left:auto;color:var(--blue);transition:.2s}
.faq details[open] summary .c{transform:rotate(45deg)}
.faq .a{padding:0 0 1.4rem;color:var(--slate);max-width:62ch}

.related{background:var(--paper-2);padding:clamp(70px,9vw,120px) 0;border-top:1px solid var(--line)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:2.5rem}
.rel{border:1px solid var(--line);background:#fff;padding:1.6rem;transition:.25s}
.rel:hover{border-color:var(--blue);transform:translateY(-3px)}
.rel .no{font-family:var(--font-m);font-size:.75rem;color:var(--blue)}
.rel h3{font-size:1.15rem;font-weight:500;margin:.5rem 0 .3rem}
.rel p{font-size:.86rem;color:var(--slate)}
.ctaband{background:var(--ink);color:#fff;padding:clamp(80px,11vw,150px) 0;text-align:center}
.ctaband h2{font-size:clamp(1.9rem,4vw,3.2rem);font-weight:400;max-width:20ch;margin:0 auto 1.4rem}
.ctaband p{color:rgba(255,255,255,.75);max-width:46ch;margin:0 auto 2.2rem}

/* ---------- SIZING CALC ---------- */
.calc{display:grid;grid-template-columns:.9fr 1.1fr;gap:0;border:1px solid var(--line);border-radius:2px;overflow:hidden;margin-top:clamp(30px,5vw,60px)}
.calc-in{padding:clamp(28px,4vw,44px);background:var(--paper-2)}
.calc-in h3{font-family:var(--font-d);font-size:1.4rem;font-weight:500}
.fld{margin-top:1.6rem}
.fld label{display:block;font-family:var(--font-m);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--slate);margin-bottom:.6rem}
.rng{display:flex;align-items:center;gap:1rem}
.rng input[type=range]{flex:1;accent-color:var(--blue);height:4px}
.rng .val{font-family:var(--font-m);font-weight:500;min-width:82px;text-align:right}
.seg{display:flex;gap:.5rem;flex-wrap:wrap}
.seg button{font-family:var(--font-m);font-size:.82rem;padding:.5rem .9rem;border:1px solid var(--line);background:#fff;color:var(--slate);cursor:pointer;border-radius:2px;transition:.15s}
.seg button.active{background:var(--blue);border-color:var(--blue);color:#fff}
.calc-out{padding:clamp(28px,4vw,44px);background:var(--ink);color:#fff}
.calc-out h4{font-family:var(--font-m);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.6);font-weight:500}
.out-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:1.2rem}
.out{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);border-radius:2px;padding:1rem}
.out .ol{font-size:.72rem;color:rgba(255,255,255,.6);font-family:var(--font-m)}
.out .ov{font-family:var(--font-d);font-size:1.6rem;font-weight:500;margin-top:.2rem}
.out .ov small{font-size:.9rem;color:rgba(255,255,255,.6);font-weight:400}
.bracket{margin-top:1rem;background:rgba(59,118,232,.14);border:1px solid var(--blue-bright);border-radius:2px;padding:.9rem 1.1rem;font-size:.9rem;color:#dbe9f9}
.bracket b{color:#fff}
.disc{margin-top:.9rem;font-size:.72rem;color:rgba(255,255,255,.5);font-family:var(--font-m)}

/* ---------- MYTH / FACT + concept ---------- */
.mf{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:clamp(30px,5vw,56px)}
.mf-card{border:1px solid var(--line);border-radius:2px;overflow:hidden;background:#fff}
.mf-card .myth{background:#fbf3f0;color:#9a3417;padding:1rem 1.3rem;font-weight:600;font-size:.95rem;border-bottom:1px solid #f2ddd5;display:flex;gap:.6rem;align-items:flex-start}
.mf-card .fact{padding:1.1rem 1.3rem;font-size:.92rem;color:var(--ink-soft)}
.mf-card .fact b{color:#1a7f5a}
.tag{font-family:var(--font-m);font-size:.6rem;letter-spacing:.1em;padding:2px 6px;border-radius:2px;flex:none;margin-top:2px}
.tag.m{background:#f2d7cd;color:#9a3417}
.acc{margin-top:1.4rem;border:1px solid var(--line);border-radius:2px;overflow:hidden;background:#fff}
.acc details{border-bottom:1px solid var(--line)}.acc details:last-child{border-bottom:0}
.acc summary{list-style:none;cursor:pointer;padding:1.1rem 1.3rem;font-family:var(--font-d);font-weight:500;font-size:1.1rem;display:flex;gap:.8rem}
.acc summary::-webkit-details-marker{display:none}
.acc summary .c{margin-left:auto;color:var(--blue);transition:.2s}
.acc details[open] summary .c{transform:rotate(45deg)}
.acc .ans{padding:0 1.3rem 1.3rem;color:var(--slate);font-size:.94rem;max-width:70ch}
.acc .ans code{font-family:var(--font-m);background:var(--paper-2);padding:1px 6px;border-radius:2px;color:var(--ink)}

/* ---------- TABLES ---------- */
.tbl-wrap{margin-top:clamp(24px,4vw,44px);overflow-x:auto;border:1px solid var(--line);border-radius:2px}
table.cmp{width:100%;border-collapse:collapse;font-size:.9rem;min-width:640px}
table.cmp thead th{background:var(--ink);color:#fff;font-family:var(--font-b);font-weight:600;text-align:left;padding:1rem 1.1rem;font-size:.85rem}
table.cmp thead th.hl{background:var(--blue)}
table.cmp tbody td{padding:.85rem 1.1rem;border-bottom:1px solid var(--line);color:var(--ink-soft)}
table.cmp tbody tr:nth-child(even){background:var(--paper-2)}
table.cmp tbody th{padding:.85rem 1.1rem;text-align:left;font-family:var(--font-m);font-size:.8rem;color:var(--ink);border-bottom:1px solid var(--line);white-space:nowrap}
table.cmp td.y{color:#1a7f5a;font-weight:600}

/* ---------- GUIDES ---------- */
.guides{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:clamp(30px,5vw,56px)}
.guide{border:1px solid var(--line);border-radius:2px;overflow:hidden;background:#fff;transition:.25s}
.guide:hover{border-color:var(--blue);transform:translateY(-4px)}
.guide .gimg{height:150px;background:#0d2038 center/cover no-repeat;position:relative}
.guide .gimg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,24,38,.1),rgba(8,24,38,.72))}
.guide .gt{position:absolute;bottom:14px;left:16px;right:16px;color:#fff;font-family:var(--font-d);font-weight:500;z-index:2;font-size:1.1rem}
.guide .gb{padding:1.3rem 1.4rem}
.guide .gb p{color:var(--slate);font-size:.86rem}
.guide .gb ul{list-style:none;margin-top:.7rem;font-size:.82rem}
.guide .gb li{padding:.3rem 0;color:var(--ink-soft);display:flex;gap:.5rem}
.guide .gb li::before{content:"→";color:var(--blue)}

.section{padding:clamp(80px,10vw,150px) 0}
.section-tint{background:var(--paper-2);border-block:1px solid var(--line)}
.section .head{max-width:640px}
.section h2{font-size:clamp(1.9rem,4vw,3rem);font-weight:400;margin-top:1.1rem}
.section .lead{color:var(--slate);margin-top:1rem;max-width:60ch}

.reveal{opacity:0;transform:translateY(24px);transition:.75s cubic-bezier(.16,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .navlinks{display:none;position:absolute;top:82px;left:0;right:0;flex-direction:column;background:#fff;padding:24px var(--gutter);gap:1.3rem;border-bottom:1px solid var(--line)}
  .navlinks.open{display:flex}.navlinks a{color:var(--ink)}
  .nav .btn-line{display:none}.burger{display:flex}
  .arow{grid-template-columns:1fr;gap:.8rem}
  .idx-grid,.res-grid,.contact-grid,.formrow,.acols,.calc,.mf{grid-template-columns:1fr}
  .toc{position:static;display:none}
  .gal{grid-template-columns:repeat(2,1fr);grid-auto-rows:130px}
  .g-a,.g-b,.g-c,.g-d,.g-e,.g-f{grid-column:span 2;grid-row:span 1}.g-a{grid-row:span 2}
  .guides,.rel-grid{grid-template-columns:1fr 1fr}
  .fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){.guides,.rel-grid,.fgrid{grid-template-columns:1fr}.hero .scrollnote{display:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}.band .bg{transform:none}}