/* Layout: same "sidewall" system as Tires for Anything (sticky rubber-black nav, concrete floor, hi-vis yellow, sizes stamped in mono). Darkside leans on the dark sidewall band for its hero. Hash views: home, bikes, double, mount, gear, sizes, report, legal. */
:root{
  --bg:#EEF0EE;
  --surface:#FFFFFF;
  --surface-2:#E3E6E4;
  --ink:#15191D;
  --muted:#59616A;
  --line:#C9CECC;
  --accent:#E9B300;
  --accent-ink:#15191D;
  --link:#235A8C;
  --good:#2F7A4C;
  --warn:#A8381C;
  --stamp-bg:#1E2328;
  --stamp-ink:#F2F3F1;
  --display:"Big Shoulders Display","Arial Narrow","Roboto Condensed",Impact,sans-serif;
  --body:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#111417; --surface:#191D21; --surface-2:#22272C; --ink:#E8EAE9; --muted:#9BA4AC;
    --line:#2F363C; --accent:#F0C33A; --accent-ink:#15191D; --link:#7FB2E5; --good:#6CC08E; --warn:#F08766;
    --stamp-bg:#0B0D0F; --stamp-ink:#E8EAE9; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#111417; --surface:#191D21; --surface-2:#22272C; --ink:#E8EAE9; --muted:#9BA4AC;
  --line:#2F363C; --accent:#F0C33A; --accent-ink:#15191D; --link:#7FB2E5; --good:#6CC08E; --warn:#F08766;
  --stamp-bg:#0B0D0F; --stamp-ink:#E8EAE9; color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;margin:0}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--stamp-bg)}
a{color:var(--link)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{width:100%;max-width:68rem;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);line-height:1.02;text-wrap:balance;margin:0;letter-spacing:.005em}
h1{font-size:clamp(2.6rem,7vw,4.6rem);font-weight:900;text-transform:uppercase}
h2{font-size:clamp(1.9rem,4.2vw,2.7rem);font-weight:800;text-transform:uppercase}
h3{font-size:1.4rem;font-weight:800;text-transform:uppercase}
p{margin:0;max-width:65ch}
.eyebrow{font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:700}
.stamp{font-family:var(--mono);font-weight:700;background:var(--stamp-bg);color:var(--stamp-ink);padding:.08em .45em;border-radius:3px;white-space:nowrap;font-size:.92em;letter-spacing:.02em}
.tread{height:12px;background:repeating-linear-gradient(115deg,var(--ink) 0 8px,transparent 8px 18px);opacity:.14}

.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--stamp-bg);color:var(--stamp-ink)}
.top .wrap{display:flex;align-items:center;gap:16px;padding-block:10px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--stamp-ink)}
.brand svg{flex:none}
.brand .bt{display:grid;gap:2px}
.brand b{font-family:var(--display);font-weight:900;font-size:1.45rem;text-transform:uppercase;letter-spacing:.02em;line-height:1}
.brand b span{color:var(--accent)}
.brand small{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;opacity:.7}
.nav{display:flex;gap:4px;overflow-x:auto;margin-left:auto;scrollbar-width:none;max-width:100%}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--stamp-ink);text-decoration:none;font-size:.88rem;font-weight:600;padding:7px 11px;border-radius:999px;white-space:nowrap;opacity:.85}
.nav a:hover{opacity:1;background:rgba(255,255,255,.08)}
.nav a[aria-current="page"]{background:var(--accent);color:var(--accent-ink);opacity:1}

main{padding-block:0 48px}
section.view{display:grid;gap:48px}
.stack{display:grid;gap:16px}
.lede{font-size:1.12rem;color:var(--muted)}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* hero on the dark sidewall */
.herob{background:var(--stamp-bg);color:var(--stamp-ink)}
.hero{padding-block:44px 36px;display:grid;gap:28px;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:end}
.hero .eyebrow{color:var(--stamp-ink);opacity:.7}
.hero h1 em{font-style:normal;background:var(--accent);color:var(--accent-ink);padding:0 .12em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.hero .lede{color:var(--stamp-ink);opacity:.82}
.quick{background:var(--surface);color:var(--ink);border-radius:10px;padding:20px;display:grid;gap:12px;min-width:0}
.quick label{font-weight:700}

input[type=text],input[type=email],select,textarea{font:inherit;color:var(--ink);background:var(--bg);border:1.5px solid var(--line);border-radius:7px;padding:10px 12px;width:100%;min-width:0}
input.code{font-family:var(--mono);font-weight:700;letter-spacing:.03em;text-transform:uppercase}
.btn{font:inherit;font-weight:700;border:0;border-radius:7px;padding:10px 16px;cursor:pointer;background:var(--ink);color:var(--bg);text-decoration:none;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.btn.yellow{background:var(--accent);color:var(--accent-ink)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn.sm{padding:6px 11px;font-size:.86rem}
.btn:hover{filter:brightness(1.08)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font-family:var(--mono);font-size:.8rem;font-weight:700;border:1.5px solid var(--line);background:transparent;color:var(--ink);border-radius:999px;padding:4px 10px;cursor:pointer}
.chip:hover{border-color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}

.pagehead{padding-block:40px 8px;display:grid;gap:14px}
.crumb{font-size:.88rem;color:var(--muted)}
.crumb a{color:var(--muted)}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:18px;display:grid;gap:8px;align-content:start;min-width:0}
.card h3{font-size:1.25rem}
.card .use{font-size:.92rem;color:var(--muted)}
a.card{text-decoration:none;color:var(--ink)}
a.card:hover{border-color:var(--ink)}
.callout{border-left:5px solid var(--accent);background:var(--surface);padding:14px 16px;border-radius:0 8px 8px 0;display:grid;gap:6px}
.callout b{font-family:var(--display);text-transform:uppercase;font-size:1.15rem;letter-spacing:.01em}
.warn{border:2px solid var(--warn);background:var(--surface);border-radius:8px;padding:16px;display:grid;gap:8px}
.warn > b{font-family:var(--display);text-transform:uppercase;font-size:1.2rem;color:var(--warn);letter-spacing:.01em}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:40rem;font-size:.93rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--surface-2)}
tr:last-child td{border-bottom:0}
.note{font-size:.86rem;color:var(--muted)}
ul.clean{margin:0;padding-left:1.1em;display:grid;gap:6px;max-width:65ch}
.pill{font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:2px 7px;border-radius:4px;white-space:nowrap;border:1px solid var(--line);color:var(--muted)}
.pill.good{background:var(--good);color:#fff;border-color:var(--good)}
.pill.want{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.pill.warn{border-color:var(--warn);color:var(--warn)}
.sample{font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border:1px dashed var(--line);padding:2px 6px;border-radius:4px}

/* bike finder result */
.bike{background:var(--surface);border:2px solid var(--ink);border-radius:10px;padding:20px;display:grid;gap:16px;min-width:0}
.bike .hd{display:flex;flex-wrap:wrap;gap:10px;align-items:baseline;justify-content:space-between}
.stock{display:flex;flex-wrap:wrap;gap:18px}
.stock div{display:grid;gap:4px}
.stock .stamp{font-size:1.15rem}
.rep{display:grid;gap:8px;border-top:1px solid var(--line);padding-top:12px}
.rep:first-child{border-top:0;padding-top:0}
.rep .top2{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.rep .stamp{font-size:1.05rem}
.rep p{font-size:.95rem}
.rep .src{font-size:.82rem;color:var(--muted)}
.reps{display:grid;gap:12px}
.empty{border:1.5px dashed var(--line);border-radius:8px;padding:14px;display:grid;gap:8px}

/* bike directory */
.groups{display:grid;gap:28px}
.make{display:grid;gap:10px}
.make h3{font-size:1.15rem;color:var(--muted)}
.blist{display:grid;grid-template-columns:repeat(auto-fill,minmax(16rem,1fr));gap:10px}
.bcard{display:grid;gap:6px;padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);text-align:left;font:inherit;color:var(--ink);cursor:pointer;min-width:0}
.bcard:hover{border-color:var(--ink)}
.bcard b{font-family:var(--display);font-weight:800;font-size:1.2rem;text-transform:uppercase;line-height:1.05}
.bcard small{color:var(--muted);font-size:.84rem}

/* size compare */
.cmp{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px;display:grid;gap:16px}
.cmp .ins{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.field{display:grid;gap:5px;min-width:0}
.field label{font-weight:700;font-size:.92rem}
.field .hint{font-size:.8rem;color:var(--muted)}
.res{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.res div{padding:12px 14px;border-right:1px solid var(--line);display:grid;gap:2px;min-width:0}
.res div:last-child{border-right:0}
.res b{font-family:var(--mono);font-size:1.15rem;font-variant-numeric:tabular-nums}
.res span{font-size:.78rem;color:var(--muted)}
.bar{display:grid;gap:6px}
.bar .tr{height:14px;border-radius:4px;background:var(--surface-2);position:relative;overflow:hidden}
.bar .tr i{position:absolute;inset:0 auto 0 0;background:var(--ink);border-radius:4px}
.bar .tr i.new{background:var(--accent)}
.bar .lab{display:flex;justify-content:space-between;font-family:var(--mono);font-size:.78rem;font-variant-numeric:tabular-nums}

/* steps */
.steps{display:grid;gap:0;counter-reset:s;border-top:3px solid var(--ink)}
.steps > div{display:grid;grid-template-columns:4.5rem minmax(0,1fr);gap:16px;padding-block:18px;border-bottom:1px solid var(--line)}
.steps > div::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-family:var(--display);font-weight:900;font-size:2.4rem;line-height:1;color:var(--muted)}
.steps > div > div{display:grid;gap:6px;min-width:0}
.steps h3{font-size:1.25rem}

/* gear */
.gear{display:grid;grid-template-columns:repeat(auto-fill,minmax(17rem,1fr));gap:10px}
.gear .card{grid-template-rows:auto auto 1fr auto}
.gear .card .row{justify-content:space-between}

.aff{font-size:.8rem;color:var(--muted)}
.mine{border:2px solid var(--ink);border-radius:10px;padding:18px;display:grid;gap:10px;background:var(--surface)}
.mine .kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:.94rem}
.mine dt{font-weight:700}
.mine dd{margin:0}

form.rpt{display:grid;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px}
.fgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.full{grid-column:1/-1}
.thanks{border:2px solid var(--good);border-radius:10px;padding:20px;background:var(--surface);display:grid;gap:10px}
.thanks h3{color:var(--good)}

.legal{display:grid;gap:18px;max-width:70ch}
.legal > div{display:grid;gap:6px}
.legal h3{font-size:1.15rem}

footer{border-top:1px solid var(--line);padding-block:24px 40px;color:var(--muted);font-size:.86rem}
footer .wrap{display:grid;gap:10px}

@media (max-width:760px){
  .hero{grid-template-columns:1fr;padding-top:28px}
  .grid2,.grid3,.fgrid,.cmp .ins{grid-template-columns:1fr}
  .res{grid-template-columns:repeat(2,minmax(0,1fr))}
  .res div:nth-child(2){border-right:0}
  .res div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .top .wrap{gap:8px}
  .nav{margin-left:0;width:100%}
  .steps > div{grid-template-columns:1fr;gap:6px}
}
@media (prefers-reduced-motion:no-preference){
  .view{animation:in .25s ease-out}
  @keyframes in{from{opacity:.4;transform:translateY(4px)}to{opacity:1;transform:none}}
}

.vid{margin:0;display:grid;gap:6px;min-width:0}.vbox{position:relative;width:100%;max-width:100%;aspect-ratio:16/9;border-radius:8px;overflow:hidden;background:var(--stamp-bg)}.vbox iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.post{display:grid;gap:16px;max-width:70ch}
.post h2{margin-top:12px}
.post p,.post li{font-size:1.05rem}
.byline{font-size:.9rem;color:var(--muted)}
.posts{display:grid;gap:12px}
.posts a.card h3{font-size:1.35rem}
.onpaper .stamp{font-size:1rem}
.crumb a{text-decoration:none}
.hero .quick .eyebrow{color:var(--muted);opacity:1}
.crumb a:hover{text-decoration:underline}