/* Aluviation — site styles */
:root{
  --paper:#F4F2EE; --paper-2:#E6E3DC; --ink:#111418; --ink-2:#2A3038;
  --muted:#3F464E; --soft:#5B6470; --line:#D6D2C9;
  --blue:#00579B; --blue-light:#4A9BE8; --blueprint:#123D6B; --bp-line:#EAF2FB; --bp-soft:#A9C3E0;
  --alu:#CDD2D8; --alu-dark:#8C949C; --red:#C8202F; --red-text:#A31A26; --coral:#FF8C80;
  --display:'Barlow Condensed',system-ui,sans-serif;
  --body:'IBM Plex Sans',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --gutter:clamp(16px,4.5vw,64px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--blue)}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:.95;margin:0;letter-spacing:.005em;text-transform:uppercase}
p{margin:0}
.wrap{padding-inline:var(--gutter)}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.24em;text-transform:uppercase;color:var(--blue)}
.eyebrow.red{color:var(--red-text)}
.eyebrow.coral{color:var(--coral)}
.eyebrow.light{color:var(--blue-light)}
.lead{font-size:clamp(16px,1.4vw,19px);color:var(--muted);max-width:560px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:10px 14px;z-index:99}
.skip:focus{left:8px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:54px;padding:0 28px;border-radius:4px;font-family:var(--mono);font-weight:500;font-size:14px;letter-spacing:.14em;text-transform:uppercase;border:1.5px solid transparent;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#004478;color:#fff}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-light{background:var(--bp-line);color:var(--blueprint)}
.btn-light:hover{background:#fff;color:var(--blueprint)}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:var(--ink-2);color:var(--paper)}
.link-arrow{font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;border-bottom:2px solid var(--blue);padding-bottom:5px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--ink);color:var(--paper)}
.site-header .bar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo svg{width:200px;height:auto;display:block}
.nav{display:flex;gap:30px;font-family:var(--mono);font-size:13px;letter-spacing:.16em;text-transform:uppercase}
.nav a{color:var(--paper);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current="page"]{color:var(--blue-light);border-bottom-color:var(--blue-light)}
.header-cta{height:44px;padding:0 18px;border:1px solid #3A4048;border-radius:4px;display:inline-flex;align-items:center;font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--paper)}
.header-cta:hover{border-color:var(--blue-light);color:var(--blue-light)}
.menu-btn{display:none;width:44px;height:44px;border:none;background:transparent;color:var(--paper);align-items:center;justify-content:center;cursor:pointer}
.nav .nav-contact-mobile{display:none}
@media (max-width:900px){
  .logo svg{width:160px}
  .menu-btn{display:inline-flex}
  .header-cta{display:none}
  .nav{display:none;position:absolute;left:0;right:0;top:76px;background:var(--ink);flex-direction:column;gap:0;padding:8px var(--gutter) 20px;border-top:1px solid var(--ink-2)}
  .nav a{padding:14px 0;border-bottom:1px solid var(--ink-2)}
  .nav.open{display:flex}
  .nav .nav-contact-mobile{display:block}
}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);min-height:min(760px,calc(100vh - 76px))}
.hero-copy{display:flex;flex-direction:column;justify-content:center;gap:28px;padding:64px var(--gutter)}
.hero h1{font-size:clamp(56px,7.2vw,108px);line-height:.9}
.hero-media{position:relative;background:#0A0C0F;overflow:hidden;min-height:340px}
.hero-media img{width:100%;height:100%;object-fit:cover}
.fig-tag{position:absolute;left:24px;bottom:24px;padding:8px 12px;background:rgba(10,12,15,.72);border:1px solid #3A4048;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--paper)}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
@media (max-width:900px){
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-media{order:-1;height:340px}
  .hero-copy{padding:36px var(--gutter) 48px}
  .btn-row .btn{flex:1 1 100%}
}

/* spec strip */
.specs{background:var(--ink);color:var(--paper);display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.specs > div{padding:26px 32px;border-right:1px solid var(--ink-2);display:flex;flex-direction:column;gap:4px}
.specs > div:last-child{border-right:none}
.specs strong{font-family:var(--display);font-size:32px;color:var(--blue-light);text-transform:uppercase;line-height:1.1}
.specs span{font-size:14px;color:#9AA2AB}
@media (max-width:900px){
  .specs{grid-template-columns:repeat(2,minmax(0,1fr))}
  .specs > div{padding:20px 16px;border-bottom:1px solid var(--ink-2)}
  .specs > div:nth-child(2n){border-right:none}
  .specs strong{font-size:26px}
}

/* sections */
.section{padding-block:clamp(64px,8vw,110px)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.section-head h2{font-size:clamp(40px,4.6vw,64px)}
.section-head p{max-width:460px;color:var(--muted)}
.stack{display:flex;flex-direction:column;gap:18px}

/* systems */
.systems{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:2px solid var(--ink)}
.system{padding:24px 22px 0;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.system:first-child{border-left:none;padding-left:0}
.system svg{width:40px;height:40px;color:var(--blue)}
.num{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--soft)}
.system h3{font-size:28px;letter-spacing:.03em}
.system p{font-size:15px;color:var(--muted);line-height:1.55}
@media (max-width:1100px){.systems{grid-template-columns:repeat(2,minmax(0,1fr))}.system{border-left:none;padding:24px 0;border-bottom:1px solid var(--line)}}
@media (max-width:600px){.systems{grid-template-columns:1fr}}

/* blueprint band */
.blueprint{position:relative;overflow:hidden;background-color:var(--blueprint);background-image:linear-gradient(rgba(234,242,251,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(234,242,251,.07) 1px,transparent 1px);background-size:40px 40px;color:var(--bp-line)}
.blueprint .inner{display:grid;grid-template-columns:minmax(0,460px) minmax(0,1fr);gap:48px;align-items:center;padding-block:clamp(64px,8vw,110px)}
.blueprint h2{font-size:clamp(40px,4.8vw,68px)}
.blueprint p{color:#C6D6E8}
.blueprint .sketch{width:130%;max-width:none}
@media (max-width:900px){.blueprint .inner{grid-template-columns:1fr}.blueprint .sketch{width:140%;margin-left:-10%}}

/* product cards */
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px 28px}
@media (max-width:1100px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.grid-4{gap:12px}.grid-3{grid-template-columns:1fr}}
.card{display:flex;flex-direction:column;gap:10px}
.card .art{aspect-ratio:4/3.2;background:var(--paper-2);border-radius:4px;display:flex;align-items:center;justify-content:center;position:relative;color:var(--ink)}
.card .art svg{width:62%;height:auto}
.card .tag{position:absolute;left:12px;top:12px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;background:var(--paper);padding:5px 8px}
.card .row{display:flex;justify-content:space-between;gap:12px;font-weight:600}
.card .row .status{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.1em;color:var(--soft);white-space:nowrap}
.card .src{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--soft);text-transform:uppercase}
.card p{font-size:15px;color:var(--muted);line-height:1.5}

/* study */
.dark{background:var(--ink);color:var(--paper)}
.study{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:64px;align-items:center}
.study h2{font-size:clamp(40px,4.4vw,60px)}
.study p{color:#B7BEC6}
.sheets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.sheet{aspect-ratio:3/4;background-color:var(--blueprint);background-image:linear-gradient(rgba(234,242,251,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(234,242,251,.08) 1px,transparent 1px);background-size:18px 18px;border-radius:3px;padding:18px;display:flex;flex-direction:column;justify-content:space-between;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--bp-line)}
.sheet b{font-family:var(--display);font-size:clamp(20px,2.2vw,30px);letter-spacing:.03em;line-height:1}
@media (max-width:900px){.study{grid-template-columns:1fr;gap:32px}.sheets{gap:10px}}

/* faq teaser + form */
.split{display:grid;grid-template-columns:minmax(0,620px) minmax(0,1fr);gap:48px;align-items:stretch}
.callout{background:var(--blue);color:#fff;padding:40px;display:flex;flex-direction:column;gap:18px}
.callout .eyebrow{color:#CFE2F4}
.callout h2{font-size:clamp(32px,3.4vw,46px);line-height:1}
.callout p{color:#E1EDF8}
.callout a{align-self:flex-start;color:#fff;font-family:var(--mono);font-size:13px;letter-spacing:.14em;border-bottom:2px solid #fff;padding-bottom:4px}
@media (max-width:900px){.split{grid-template-columns:1fr}.callout{padding:28px 22px}}

.form{display:flex;flex-direction:column;gap:10px}
.form h2{font-size:clamp(32px,3.4vw,46px);margin-bottom:8px}
.form label{font-size:14px;font-weight:500}
.form input,.form textarea,.form select{width:100%;border-radius:4px;border:1.5px solid var(--alu-dark);background:#fff;padding:0 18px;height:52px;font:inherit;font-size:16px;color:var(--ink)}
.form textarea{height:auto;padding:14px 18px;resize:vertical;min-height:120px}
.form input:focus,.form textarea:focus,.form select:focus{outline:3px solid rgba(0,87,155,.3);border-color:var(--blue)}
.form .two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form .hidden{display:none}
.form .note{font-size:13px;color:var(--soft)}
.form .btn{align-self:flex-start;margin-top:8px}
@media (max-width:600px){.form .two{grid-template-columns:1fr}}

/* page hero */
.page-hero{padding-block:clamp(56px,7vw,90px) 40px;display:flex;justify-content:space-between;align-items:flex-end;gap:48px;flex-wrap:wrap}
.page-hero h1{font-size:clamp(64px,9vw,128px);line-height:.88}
.page-hero p{max-width:520px}

/* provenance plate */
.plate{width:min(380px,100%);border-radius:10px;background:var(--alu);border:1px solid #A7AEB6;padding:22px 26px;position:relative;font-family:var(--mono);color:#1E2227;flex-shrink:0}
.plate::before,.plate::after,.plate .r1,.plate .r2{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:var(--alu-dark)}
.plate::before{left:9px;top:9px}.plate::after{right:9px;top:9px}.plate .r1{left:9px;bottom:9px}.plate .r2{right:9px;bottom:9px}
.plate .top{display:flex;justify-content:space-between;align-items:center;border-bottom:1.5px solid #1E2227;padding-bottom:8px;margin-bottom:12px;font-size:9px;letter-spacing:.14em}
.plate .top svg{width:150px}
.plate dl{display:grid;grid-template-columns:1fr 1fr;gap:7px 12px;margin:0;font-size:11px;letter-spacing:.08em}
.plate dd{margin:0;font-weight:500}
.provenance{display:flex;gap:72px;align-items:center}
.provenance h2{font-size:clamp(40px,4.4vw,60px)}
.provenance p{color:#B7BEC6;max-width:620px}
@media (max-width:900px){.provenance{flex-direction:column;align-items:flex-start;gap:36px}}

/* prose pages */
.prose{max-width:760px}
.prose h2{font-size:clamp(32px,3.4vw,44px);margin:56px 0 16px}
.prose h3{font-family:var(--mono);font-weight:500;font-size:14px;letter-spacing:.2em;margin:44px 0 12px;line-height:1.4}
.prose p{color:var(--muted);margin-bottom:16px}
.prose ol{color:var(--muted);padding-left:22px}
.prose li{margin-bottom:8px}
.prose a{border-bottom:1.5px solid var(--blue)}
.rule{border:none;border-top:1px solid var(--line);margin:0}

.chapter{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:48px;padding-block:44px;border-top:1px solid var(--line)}
.chapter h3{font-family:var(--mono);font-weight:500;font-size:14px;letter-spacing:.3em;line-height:1.4}
.chapter p{color:var(--muted);margin-bottom:12px}
@media (max-width:900px){.chapter{grid-template-columns:1fr;gap:12px}}

/* footer */
.site-footer{background:var(--ink);color:#B7BEC6;padding:64px var(--gutter) 32px}
.site-footer .top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.site-footer .brand svg{width:280px;height:auto}
.site-footer .tagline{font-family:var(--mono);font-size:12px;letter-spacing:.4em;color:var(--blue-light);margin-top:14px}
.site-footer .cols{display:grid;grid-template-columns:repeat(3,minmax(0,auto));gap:64px;font-size:15px}
.site-footer .cols div{display:flex;flex-direction:column;gap:10px}
.site-footer .cols b{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.18em;color:#7E868F}
.site-footer a:hover{color:var(--blue-light)}
.site-footer .bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:#7E868F;border-top:1px solid var(--ink-2);padding-top:24px;margin-top:56px}
@media (max-width:700px){.site-footer .cols{grid-template-columns:1fr 1fr;gap:32px}.site-footer .brand svg{width:220px}}

:focus-visible{outline:3px solid var(--blue-light);outline-offset:2px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media (max-width:600px){
  .sheet{padding:10px}
  .sheet b{font-size:15px}
  .grid-4 .card .status{display:none}
  .grid-4 .card .row{font-size:14px}
}

/* study posters */
.sheet-img{display:block;border-radius:3px;overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.35);transition:transform .2s}
.sheet-img:hover{transform:translateY(-4px)}
.sheet-img img{width:100%;height:auto}
.poster-card{display:flex;flex-direction:column;gap:10px}
.poster-img{display:block;border-radius:4px;overflow:hidden;background:var(--paper-2);box-shadow:0 6px 18px rgba(17,20,24,.14);transition:transform .2s}
.poster-img:hover{transform:translateY(-3px)}
.poster-img img{width:100%;height:auto}
.poster-card .row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-top:6px}
.poster-card h3{font-size:30px;letter-spacing:.02em}
.poster-card .status{font-family:var(--mono);font-size:14px}
.poster-card p{font-size:15px;color:var(--muted);line-height:1.55}
.bundles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.bundle{border:1px solid #3A4048;border-radius:6px;padding:28px;display:flex;flex-direction:column;gap:12px}
.bundle h3{font-size:36px}
.bundle p{color:#B7BEC6;font-size:15px;flex-grow:1}
.bundle .price{font-family:var(--display);font-weight:700;font-size:40px;color:var(--paper)}
.bundle.featured{background:var(--blue);border-color:var(--blue)}
.bundle.featured .eyebrow{color:#CFE2F4}
.bundle.featured p{color:#E1EDF8}
@media (max-width:900px){.bundles{grid-template-columns:1fr}}
.choices{border:1px solid var(--line);border-radius:4px;padding:14px 18px;margin:0 0 6px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 16px}
.choices legend{font-size:14px;font-weight:500;padding:0 6px}
.check{display:flex;align-items:center;gap:10px;min-height:40px;font-size:15px;font-weight:400;cursor:pointer}
.check input{width:20px;height:20px;accent-color:var(--blue);flex-shrink:0}
@media (max-width:600px){.choices{grid-template-columns:1fr}}
.bundle-img{width:calc(100% + 56px);max-width:none;margin:-28px -28px 8px;border-radius:6px 6px 0 0}
.bundles{align-items:stretch}
.bundles{grid-template-columns:repeat(4,minmax(0,1fr))}
.bundle.advanced{background:var(--blueprint);border-color:var(--blueprint)}
@media (max-width:1100px){.bundles{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.bundles{grid-template-columns:1fr}}
.bundle-img{height:150px;object-fit:cover;object-position:center}
.bundle.featured .bundle-img{object-fit:contain;background:transparent}
.real{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:56px;align-items:center}
.real figure{margin:0;display:flex;flex-direction:column;gap:10px}
.real img{width:100%;border-radius:4px}
.real figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--soft)}
.real-side{margin-top:12px!important}
.real-side img{max-height:260px;object-fit:cover}
@media (max-width:900px){.real{grid-template-columns:1fr;gap:32px}}
.hero-media img{object-position:center 30%}
.bundle .price{margin-top:8px;line-height:1}
.bundle .ship{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:#9AA2AB}
.bundle.featured .ship{color:#CFE2F4}
.bundle .save{display:inline-block;align-self:flex-start;margin-top:6px;padding:5px 10px;border-radius:3px;background:var(--paper);color:var(--ink);font-family:var(--mono);font-size:11px;letter-spacing:.08em}
.bundle p{flex-grow:0}
.bundle .price{margin-top:auto}

/* ---- home ---- */
.hero-duo{display:grid;grid-template-rows:1fr 1fr;gap:4px;background:var(--ink);min-height:560px}
.duo-tile{position:relative;overflow:hidden;display:block}
.duo-tile img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.duo-tile:hover img{transform:scale(1.03)}
@media (max-width:900px){.hero-duo{order:-1;min-height:0;grid-template-rows:auto;grid-template-columns:1fr 1fr}.duo-tile{aspect-ratio:1/1}.duo-tile .fig-tag{left:8px;bottom:8px;font-size:9px;padding:5px 7px}}
.note-line{font-size:15px;color:var(--muted);border-left:3px solid var(--blue);padding:4px 0 4px 14px}
.build-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.build-strip a{display:flex;flex-direction:column;gap:10px;font-weight:600}
.build-strip img{aspect-ratio:3/4;object-fit:cover;border-radius:4px;width:100%}
@media (max-width:900px){.build-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}
.td-teaser{width:100%;border-radius:4px;box-shadow:0 12px 40px rgba(0,0,0,.4)}

/* ---- taildragger gallery ---- */
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.gallery figure{margin:0;display:flex;flex-direction:column;gap:8px}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px}
.gallery .g-wide{grid-column:span 2}
.gallery .g-wide img{aspect-ratio:16/9;height:100%}
.gallery figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--soft)}
@media (max-width:900px){.gallery{grid-template-columns:1fr}.gallery .g-wide{grid-column:auto}}

/* ---- salvage builds ---- */
.builds{display:flex;flex-direction:column;gap:80px}
.build{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:48px;align-items:center;scroll-margin-top:100px}
.build:nth-child(even) .build-main{order:2}
.build-main img{width:100%;max-height:640px;object-fit:cover;border-radius:4px}
.build-text{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.build-text h3{font-size:clamp(36px,3.6vw,52px)}
.build-text p{color:var(--muted);font-size:17px}
.build-thumbs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%}
.build-thumbs img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:3px}
@media (max-width:900px){.build{grid-template-columns:1fr;gap:20px}.build:nth-child(even) .build-main{order:0}.builds{gap:56px}}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--paper)}
.steps li{padding:24px 22px 0 0;display:flex;flex-direction:column;gap:10px}
.steps h3{font-size:26px}
.steps p{color:#B7BEC6;font-size:15px}
.steps .num{color:var(--blue-light)}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr;gap:24px}}
@media (max-width:600px){.steps{grid-template-columns:1fr}}
.blueprint .td-h{font-size:clamp(40px,4.2vw,60px)}
.gallery .g-wide img{height:auto}
.gallery figure:not(.g-wide) img{height:100%}