/* WhatSizeTire "road" theme (2026-10-29). Site-local; system fonts only, no CDNs. Sand + asphalt + sunset orange + lane yellow + desert teal. */
:root{--ink:#23262b;--slate:#454a52;--coral:#d9622b;--coral-d:#b04a17;--oat:#ecd3b0;--oat-l:#f7e9d4;--cream:#fbf4ea;--paper:#fffdf9;--mist:#e7f0f0;--sage:#2f6f73;--sage-l:#dcebea;--muted:#5d6168;--line:#eadcc6;--honey:#f2b632;--ok:#2f7a4f;--some:#9a6400;--no:#a8322a;
--display:"Avenir Next","Avenir","Futura","Century Gothic","Gill Sans","Trebuchet MS",system-ui,sans-serif;--sans:"Seravek","Segoe UI",Ubuntu,Calibri,system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
--r:18px;--sh:0 14px 30px rgba(35,38,43,.08),0 2px 6px rgba(35,38,43,.05)}
[hidden]{display:none!important}*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:17px/1.65 var(--sans);color:var(--ink);background:var(--cream)}
img{max-width:100%;height:auto;display:block}
a{color:var(--coral-d);text-decoration-color:var(--oat);text-decoration-thickness:2px;text-underline-offset:3px}a:hover{color:var(--ink);text-decoration-color:var(--coral)}
h1,h2,h3{font-family:var(--display);color:var(--ink);font-weight:600;line-height:1.12;letter-spacing:-.015em}
h1{font-size:clamp(1.95rem,6vw,3.1rem);margin:.3em 0 .35em}
h2{font-size:clamp(1.4rem,3.6vw,2rem);margin:1.6em 0 .5em}h3{font-size:1.15rem;margin:.4em 0}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;z-index:9}.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--coral);outline-offset:2px}
.center{text-align:center}
/* header */
.top{position:sticky;top:0;z-index:5;background:rgba(251,244,234,.95);backdrop-filter:saturate(1.3) blur(8px);border-bottom:1px solid var(--line)}
.top .in{max-width:1180px;margin:0 auto;padding:10px 18px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 18px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:600;font-size:1.35rem;letter-spacing:-.02em}
.brand b{color:var(--coral);font-weight:600}
.top nav{display:flex;gap:4px 16px;flex-wrap:wrap;font-size:.92rem}
.top nav a{text-decoration:none;color:var(--slate);padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap}
.top nav a:hover{border-bottom-color:var(--coral);color:var(--ink)}
@media(max-width:760px){.top nav{width:100%;flex-wrap:nowrap;overflow-x:auto;gap:16px;font-size:.86rem;scrollbar-width:none}.brand{font-size:1.22rem}}
main{max-width:1180px;margin:0 auto;padding:0 18px 40px;overflow-x:clip}
/* shared */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh)}
.eyebrow{font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--sage);font-weight:700;margin:0}
.btn{display:inline-block;background:var(--coral);color:#fff;text-decoration:none;padding:13px 24px;border-radius:999px;font-weight:700;font-size:1rem;box-shadow:0 8px 18px rgba(217,98,43,.22);margin:4px 8px 4px 0}
.btn:hover{background:var(--coral-d);color:#fff}.btn.ghost{background:var(--paper);color:var(--ink);border:1.5px solid var(--oat);box-shadow:none}.btn.ghost:hover{border-color:var(--coral);color:var(--coral-d)}
sup.cite{font-size:.66rem;color:var(--muted);font-family:var(--sans);white-space:nowrap;font-weight:500}sup.cite a{text-decoration:none;color:var(--slate);font-weight:700}
.sh{font-style:italic}.unverified{font-size:.92rem;color:#6b3d00;font-style:italic;background:#fbeedd;border-radius:8px;padding:2px 8px}
.aff-note{font-size:.88rem;color:var(--muted)}
.src{font-size:.85rem;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:40px}
.fine{font-size:.84rem;color:var(--muted)}
/* tables */
.wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:14px 0;border-radius:14px;border:1px solid var(--line);background:var(--paper)}
table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:420px}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--oat-l);color:var(--ink);font-weight:700;font-size:.88rem}
tbody tr:nth-child(even){background:#fcf8f2}tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
/* hero */
.hero-wrap{display:grid;gap:0 40px;grid-template-areas:"copy" "photo" "fit";padding-top:10px}
.hero{grid-area:copy;padding-top:8px}
.hero h1 em{font-style:normal;color:var(--coral)}
.lede{font-size:1.1rem;color:var(--slate);max-width:36em}
.hero-photo{grid-area:photo;border-radius:24px;overflow:hidden;box-shadow:var(--sh);height:220px;margin-top:6px}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:50% 45%}
.hero-wrap .fit{grid-area:fit}
@media(min-width:980px){.hero-wrap{grid-template-columns:1.05fr 1fr;grid-template-areas:"copy photo" "fit fit";align-items:center;padding-top:26px}.hero-photo{height:300px;margin-top:0}}
.trust{display:flex;flex-wrap:wrap;gap:8px 18px;padding:0;margin:12px 0 0;list-style:none;font-size:.92rem;color:var(--slate)}
.trust li:before{content:"✓ ";color:var(--sage);font-weight:800}
/* finder tool */
.fit{background:var(--paper);border:1px solid var(--line);border-radius:26px;padding:22px 18px 18px;margin:26px 0 10px;box-shadow:0 20px 44px rgba(35,38,43,.10);border-top:6px solid var(--coral)}
.fit h2{margin:0 0 4px}.fit-head{display:flex;gap:14px;align-items:center}.fit-head p{margin:0;color:var(--muted)}
.fit .ic{width:56px;height:44px;color:var(--coral);flex:none}
.fgrid{display:grid;gap:14px;margin:18px 0 6px}
@media(min-width:760px){.fgrid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1040px){.fgrid{grid-template-columns:auto 1fr 1fr 1fr}}
.fgrid label,.fgrid legend{display:block;font-weight:700;font-size:.9rem;margin-bottom:5px;padding:0}.fgrid small{font-weight:400;color:var(--muted)}
.fgrid fieldset{border:0;padding:0;margin:0;min-width:0}
.fgrid input[type=number],.fgrid select{width:100%;font:inherit;font-size:1.05rem;padding:11px 12px;border-radius:12px;border:1.5px solid var(--oat);background:#fff;color:var(--ink);min-height:48px}
.fgrid input:focus,.fgrid select:focus{border-color:var(--coral);outline:none;box-shadow:0 0 0 3px rgba(217,98,43,.15)}
.pair{display:flex;gap:8px;align-items:center}.pair input{min-width:0}.pair span{color:var(--muted);font-size:.9rem}
.seg{display:flex;flex-wrap:wrap}.seg label{margin:0;font-weight:400}.seg input{position:absolute;opacity:0}
.seg span{display:inline-block;padding:11px 14px;background:var(--cream);border:1.5px solid var(--oat);cursor:pointer;font-weight:700;min-height:48px;font-size:.95rem}
.seg label:first-of-type span{border-radius:12px 0 0 12px}.seg label:last-of-type span{border-radius:0 12px 12px 0}.seg label+label span{border-left:0}
.seg input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}.seg input:focus-visible+span{outline:3px solid var(--coral)}
.chks{display:flex;flex-wrap:wrap;gap:6px 22px;margin:8px 0 0}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:.95rem}.chk input{width:22px;height:22px;margin-top:2px;accent-color:var(--coral);flex:none}
#fit-out{display:block;background:var(--cream);border-radius:18px;padding:18px;margin-top:14px;min-height:120px;overflow-wrap:break-word}
#fit-out sup.cite{white-space:normal}
.res-head{font-family:var(--display);font-size:1.4rem;font-weight:600;margin:0 0 4px}
.res-head b{color:var(--coral-d)}
.res-sub{margin:0 0 12px;color:var(--slate)}
.why{margin:6px 0 14px;padding-left:20px}.why li{margin:4px 0}
.cls{list-style:none;padding:0;margin:0;display:grid;gap:8px}
@media(min-width:760px){.cls{grid-template-columns:1fr 1fr}}@media(min-width:1040px){.cls{grid-template-columns:1fr 1fr 1fr}}
.cls li{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.cls li.pick{border:2px solid var(--coral)}
.cls strong{font-family:var(--display);font-weight:600;font-size:1.05rem}
.cls p{margin:4px 0 0;font-size:.9rem;color:var(--slate)}
.badge{display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:2px 9px;border-radius:999px;margin-left:6px;vertical-align:2px}
.b-ok{background:#e1f0e6;color:var(--ok)}.b-some{background:#fbefd9;color:var(--some)}.b-no{background:#f8e1de;color:var(--no)}.b-pick{background:var(--coral);color:#fff}
.when{font-size:.78rem;color:var(--muted)}
.res-notes{font-size:.9rem;margin:12px 0 0;padding-left:20px}.res-notes li{margin:3px 0}
.res-warn{background:#fbeedd;border-left:4px solid var(--coral);padding:10px 12px;border-radius:8px;margin:12px 0 0;font-size:.95rem}
.res-empty{margin:0;color:var(--muted)}
/* sections */
.glance{padding:22px;margin:44px 0}.glance h2{margin:.2em 0 .3em}
.split{display:grid;gap:22px;margin:46px 0;align-items:center}.split h2{margin-top:.2em}
.split-photo{margin:0;border-radius:22px;overflow:hidden;box-shadow:var(--sh);max-width:480px;width:100%;height:300px;justify-self:center}
.split-photo img{width:100%;height:100%;object-fit:cover}
@media(max-width:600px){.split-photo{height:220px}}
@media(min-width:900px){.split{grid-template-columns:1fr 1.1fr;gap:44px}.split.rev .split-photo{order:2}}
.checks{list-style:none;padding:0}.checks li{padding:8px 0 8px 34px;position:relative;border-bottom:1px dashed var(--line)}
.checks li:before{content:"";position:absolute;left:0;top:11px;width:22px;height:22px;border-radius:7px;background:var(--sage) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12l4 4 8-8' fill='none' stroke='white' stroke-width='3'/%3E%3C/svg%3E") center/16px no-repeat}
.clr{background:var(--mist);border-radius:26px;padding:26px 18px;margin:44px 0}.clr h2{margin-top:.2em}
.clr-grid{display:grid;gap:12px;margin:16px 0;grid-template-columns:repeat(2,1fr)}
@media(min-width:800px){.clr-grid{grid-template-columns:repeat(4,1fr)}}
.clr-grid div{background:var(--paper);border-radius:16px;padding:16px;box-shadow:var(--sh)}
.clr-grid b{display:block;font-family:var(--display);font-size:1.6rem;font-weight:600;color:var(--coral-d);line-height:1.1}
.clr-grid span{font-size:.9rem;color:var(--slate)}
.guide-list{list-style:none;padding:0;display:grid;gap:10px;margin:18px 0}
@media(min-width:760px){.guide-list{grid-template-columns:1fr 1fr}}
.guide{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;color:var(--ink);font-weight:600;min-height:56px}
.guide:after{content:"→";color:var(--coral);font-size:1.3rem}.guide:hover{border-color:var(--coral);color:var(--coral-d)}
/* guide pages */
body.page main{max-width:860px}body.page main>h1{margin-top:.7em}
.kicker{font-size:1.15rem;color:var(--slate);margin:0 0 .8em;line-height:1.45}
.page-photo{max-width:560px;margin:20px 0;border-radius:20px;overflow:hidden;box-shadow:var(--sh)}
.page-photo img{width:100%;height:300px;object-fit:cover}
@media(max-width:600px){.page-photo img{height:210px}}
.cta-box{background:var(--ink);color:#eef1f6;border-radius:16px;padding:14px 18px;margin:18px 0}.cta-box p{margin:0}.cta-box a{color:#f6c99a}
.related{display:flex;flex-wrap:wrap;gap:8px;margin:34px 0 0;align-items:center}.related p{width:100%;margin:0 0 4px;font-weight:600;font-family:var(--display);font-size:1.15rem}
.related a{background:var(--paper);border:1.5px solid var(--line);border-radius:999px;padding:6px 14px;text-decoration:none;font-weight:600;font-size:.92rem}.related a:hover{border-color:var(--coral)}
.tip{background:var(--sage-l);border-radius:14px;padding:12px 16px;margin:16px 0}.tip p{margin:0}
main ul li,main ol li{margin:6px 0}
/* footer */
.foot{background:var(--ink);color:#d9d6cf;margin-top:30px}.foot .in{max-width:1180px;margin:0 auto;padding:30px 18px}
.foot a{color:#fff}.brand-f{display:flex;align-items:center;gap:8px;font-family:var(--display);font-weight:600;font-size:1.25rem;color:#fff;margin:0 0 8px}.brand-f b{color:#f2b632;font-weight:600}
.photo-note{font-size:.85rem;color:#b4afa6}.foot-nav{font-size:.92rem}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* WhatSizeTire additions */
.top{border-bottom:0;box-shadow:0 1px 0 var(--line)}
.top:after{content:"";display:block;height:4px;background:repeating-linear-gradient(90deg,var(--honey) 0 34px,transparent 34px 52px),var(--ink)}
.brand .logo{color:var(--ink)}
.hero h1 em{color:var(--coral)}
.hero-photo{position:relative}
.hero-photo:after{content:"";position:absolute;left:0;right:0;bottom:0;height:10px;background:repeating-linear-gradient(90deg,var(--honey) 0 40px,transparent 40px 64px),var(--ink)}
.fgrid input[type=text]{width:100%;font:inherit;font-size:1.15rem;font-weight:700;letter-spacing:.03em;padding:11px 12px;border-radius:12px;border:1.5px solid var(--oat);background:#fff;color:var(--ink);min-height:50px;text-transform:uppercase}
.fgrid input[type=text]:focus{border-color:var(--coral);outline:none;box-shadow:0 0 0 3px rgba(217,98,43,.15)}
.fgrid input[type=number]{max-width:140px}
@media(min-width:1040px){.fgrid.tire{grid-template-columns:1fr 1fr 1fr}}
.fgrid .hint{display:block;font-weight:400;font-size:.82rem;color:var(--muted);margin-top:4px}
.examples{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 0}.examples button{font:inherit;font-size:.82rem;font-weight:700;background:var(--cream);border:1.5px solid var(--oat);border-radius:999px;padding:5px 11px;cursor:pointer;color:var(--slate);min-height:34px}.examples button:hover{border-color:var(--coral);color:var(--coral-d)}
.order{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 12px}.order div{background:var(--paper);border:2px solid var(--line);border-radius:16px;padding:10px 16px;min-width:132px;flex:1 1 132px}
.order div.hi{border-color:var(--coral)}
.order span{display:block;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:700}.order b{font-family:var(--display);font-size:1.5rem;font-weight:600;color:var(--ink)}
.order small{display:block;color:var(--muted);font-size:.85rem}
.decode{display:flex;flex-wrap:wrap;gap:4px;margin:6px 0 14px;font-family:var(--display)}
.decode span{display:flex;flex-direction:column;align-items:center;background:var(--ink);color:#fff;border-radius:10px;padding:8px 10px 6px;min-width:46px;text-align:center}
.decode span b{font-size:1.45rem;font-weight:600;line-height:1.1}.decode span i{font-style:normal;font-size:.7rem;color:#e8dccb;letter-spacing:.05em;text-transform:uppercase;margin-top:2px}
.decode span.c1{background:var(--coral)}.decode span.c2{background:var(--sage)}.decode span.c3{background:#6b4f2a}.decode span.c4{background:var(--slate)}
.res-grid{display:grid;gap:14px}@media(min-width:900px){.res-grid{grid-template-columns:1fr 1fr}}
.res-box{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.res-box h3{margin:0 0 8px;font-size:1.08rem}
.res-box table{min-width:0;font-size:.92rem}.res-box th,.res-box td{padding:7px 8px}
.ok{color:var(--ok);font-weight:700}.warnc{color:var(--no);font-weight:700}.somec{color:var(--some);font-weight:700}
.meter{height:12px;border-radius:999px;background:linear-gradient(90deg,var(--no) 0 20%,#e8b04a 20% 35%,var(--ok) 35% 65%,#e8b04a 65% 80%,var(--no) 80%);position:relative;margin:26px 0 22px}
.meter i{position:absolute;top:-8px;width:4px;height:28px;background:var(--ink);border-radius:2px;transform:translateX(-50%)}
.meter span{position:absolute;top:16px;font-size:.72rem;color:var(--muted);transform:translateX(-50%)}
.aff{margin:14px 0 0;padding:12px 14px;border:1.5px dashed var(--oat);border-radius:14px;background:var(--paper)}.aff-label{margin:0 0 6px;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:700}
.anat{background:var(--ink);color:#f3ece2;border-radius:26px;padding:26px 18px;margin:44px 0;position:relative;overflow:hidden}
.anat h2{color:#fff;margin-top:.1em}.anat .eyebrow{color:var(--honey)}
.anat .code{display:flex;flex-wrap:wrap;gap:6px;font-family:var(--display);font-size:clamp(1.6rem,6vw,3rem);font-weight:600;margin:14px 0 18px}
.anat .code b{background:rgba(255,255,255,.08);border-bottom:4px solid var(--honey);border-radius:8px;padding:2px 10px;font-weight:600}
.anat .code b.o{border-color:var(--coral)}.anat .code b.t{border-color:#6fb7b9}.anat .code b.s{border-color:#c9a27a}
.anat ol{display:grid;gap:10px;padding:0;list-style:none;margin:0}@media(min-width:800px){.anat ol{grid-template-columns:repeat(3,1fr)}}
.anat li{background:rgba(255,255,255,.06);border-radius:14px;padding:12px 14px;margin:0}.anat li strong{display:block;color:#fff;font-family:var(--display);font-size:1.05rem}
.anat a{color:#f6c99a}.anat sup.cite,.anat sup.cite a{color:#d9cfc2}
.types{display:grid;gap:12px;margin:16px 0;list-style:none;padding:0}@media(min-width:760px){.types{grid-template-columns:1fr 1fr}}@media(min-width:1040px){.types{grid-template-columns:repeat(3,1fr)}}
.types li{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:14px 16px;box-shadow:var(--sh);margin:0}.types strong{font-family:var(--display);font-size:1.08rem;font-weight:600}.types p{margin:4px 0 0;font-size:.92rem;color:var(--slate)}
details.more{margin:10px 0 0}details.more summary{cursor:pointer;font-weight:700;color:var(--coral-d)}
.photo-tag{font-size:.78rem;color:var(--muted);margin:6px 2px 0}
.cols2{columns:2;column-gap:24px}@media(max-width:600px){.cols2{columns:1}}
.examples-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px}.examples-row .examples{margin:0}.examples-row .hint{margin:0}
.plus-step{margin:0 0 10px}.plus-step p{margin:0 0 6px;font-weight:700;font-size:.9rem;color:var(--slate)}
.plus-step ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}.plus-step li{margin:0;background:var(--cream);border:1px solid var(--line);border-radius:12px;padding:6px 10px;line-height:1.3}
.plus-step li strong{display:block;font-family:var(--display);font-size:1rem}.plus-step li span{font-size:.8rem;color:var(--muted)}
.res-box .wrap table{min-width:330px}.res-box td{white-space:nowrap}
@media(max-width:600px){.fit{padding:18px 12px 12px;border-radius:20px}#fit-out{padding:12px}.res-box{padding:12px}.order div{min-width:0;flex:1 1 40%;padding:8px 12px}.order b{font-size:1.3rem}.res-head{font-size:1.2rem}.decode span{min-width:40px;padding:6px 8px 5px}.decode span b{font-size:1.2rem}}
.res-grid>*{min-width:0}.res-box .wrap{max-width:100%}.meter span:last-child{transform:translateX(-100%)}.meter span:nth-child(2){transform:none}
@media(max-width:600px){.res-box .wrap table{min-width:0;font-size:.84rem}.res-box th,.res-box td{padding:6px 5px}.res-box td{white-space:nowrap}.res-box tbody th{white-space:normal}}