/* Crux Cost Segregation — shared styles
   Brand: ink #13233A, copper #B8692A (decorative), copper text #9E571F (AA on light), paper #F6F3EE */

@font-face{font-family:"Inter";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/inter-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Inter";font-style:normal;font-weight:500;font-display:swap;src:url("fonts/inter-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Inter";font-style:normal;font-weight:600;font-display:swap;src:url("fonts/inter-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Source Serif 4";font-style:normal;font-weight:600;font-display:swap;src:url("fonts/source-serif-4-latin-600-normal.woff2") format("woff2")}

:root{
  --ink:#13233A; --ink-2:#2E3F57; --muted:#5B6878; --line:#E2DCD2;
  --paper:#F6F3EE; --white:#FFFFFF;
  --copper:#B8692A; --copper-2:#D08A4E; --copper-3:#E7BC93;
  --copper-text:#9E571F; --copper-on-dark:#E0A06A;
  --radius:10px; --max:1120px;
  --serif:"Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:Inter, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--copper-2);outline-offset:2px;border-radius:4px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.5rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
@media (max-width:420px){.wrap{padding:0 18px}}
.eyebrow{font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--copper-text);margin-bottom:12px}
.lede{font-size:1.15rem;color:var(--ink-2);max-width:40em}
section{padding:88px 0}
@media (max-width:600px){section{padding:64px 0}}
.band{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:#fff;padding:10px 14px;border-radius:6px;z-index:50;text-decoration:none;font-weight:600}
.skip:focus{top:12px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;font-weight:600;padding:14px 22px;border-radius:8px;border:0;font-size:1rem;line-height:1.3;cursor:pointer;font-family:var(--sans);text-align:center}
.btn:hover{background:#0B1626}
.btn.alt{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn.alt:hover{background:var(--ink);color:#fff}
.btn.block{display:block;width:100%}

/* header */
header.site{position:sticky;top:0;z-index:20;background:rgba(246,243,238,.95);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.nav .logo img{height:40px;width:auto}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;align-items:center}
.nav ul a{text-decoration:none;font-size:.95rem;color:var(--ink-2);font-weight:500}
.nav ul a:hover{color:var(--ink)}
.nav .btn{padding:10px 16px;font-size:.92rem;color:#fff}
@media (max-width:900px){.nav ul li.hide-m{display:none}}
@media (max-width:380px){.nav .logo img{height:34px}.nav .btn{padding:9px 12px;font-size:.88rem}}

/* hero */
.hero{padding:80px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero small{display:block;margin-top:14px;color:var(--muted);font-size:.88rem}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero{padding-top:48px}}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card p{color:var(--ink-2);font-size:.97rem;margin:0}

/* calculator */
.calc{padding:26px;box-shadow:0 1px 2px rgba(19,35,58,.04),0 8px 24px rgba(19,35,58,.06)}
.calc h2{font-family:var(--sans);font-size:1.1rem;font-weight:600;letter-spacing:0;margin:0 0 2px}
.calc .sub{color:var(--muted);font-size:.88rem;margin:0 0 18px}
.calc .fields{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px;margin-bottom:20px;align-items:end}
.calc .fields .full{grid-column:1/-1}
.calc label{font-size:.8rem;margin-bottom:4px}
.calc input,.calc select{padding:9px 11px;font-size:.95rem;margin:0}
@media (max-width:420px){.calc{padding:20px}.calc .fields{gap:12px 10px}}
@media (max-width:340px){.calc .fields{grid-template-columns:1fr}}
.bar-row{margin-bottom:14px}
.bar-label{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:.9rem;margin-bottom:6px}
.bar-label strong{font-variant-numeric:tabular-nums;white-space:nowrap}
.bar{height:14px;border-radius:4px;background:#EEE9E1;overflow:hidden;display:flex}
.bar span{display:block;height:100%}
.bar .b-without{background:#7D8A9B;border-radius:4px}
.bar .b-low{background:var(--copper);border-radius:4px 0 0 4px}
.bar .b-range{background:repeating-linear-gradient(135deg,var(--copper-3) 0 6px,#F1D6BD 6px 12px);border-radius:0 4px 4px 0}
.calc-out{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:12px 14px;font-size:.92rem;margin:16px 0}
.calc-out strong{font-variant-numeric:tabular-nums;white-space:nowrap}
.calc .note{font-size:.76rem;color:var(--muted);margin:14px 0 0;line-height:1.5}
.calc .err{color:#A3341F;font-size:.85rem;margin:0 0 10px}

/* trust strip */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white);padding:22px 0}
.trust ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.trust li{font-size:.92rem;font-weight:500;color:var(--ink-2);display:flex;gap:10px;align-items:flex-start}
.trust li::before{content:"";flex:0 0 10px;height:10px;margin-top:7px;background:var(--copper);border-radius:2px}
@media (max-width:860px){.trust ul{grid-template-columns:1fr 1fr}}
@media (max-width:420px){.trust ul{grid-template-columns:1fr}}

/* grids */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
@media (max-width:900px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.grid-2{grid-template-columns:1fr}}
@media (max-width:600px){.grid-3,.grid-4{grid-template-columns:1fr}}
.step-n{font-family:var(--serif);font-size:2rem;color:var(--copper-on-dark);line-height:1;margin-bottom:12px}

/* what a study does */
.classes .card{border-top:6px solid var(--ink)}
.classes .c5{border-top-color:var(--copper)}
.classes .c15{border-top-color:var(--copper-3)}
.classes .life{font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.classes .tag{display:inline-block;margin-top:14px;font-size:.82rem;font-weight:600;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:4px 10px}
.fineprint{font-size:.88rem;color:var(--muted);margin-top:20px;max-width:52em}

.dark{background:var(--ink);color:#E9EEF5}
.dark h2,.dark h3{color:#fff}
.dark .eyebrow{color:var(--copper-on-dark)}
.dark .lede{color:#C5CFDC}
.dark .card{background:#1B2E49;border-color:#2A4062}
.dark .card p{color:#C5CFDC}

/* lists with checks */
.ticks{list-style:none;padding:0;margin:14px 0 0}
.ticks li{padding:9px 0 9px 28px;position:relative;border-top:1px solid var(--line);font-size:.96rem;color:var(--ink-2)}
.ticks li:first-child{border-top:0}
.ticks li::before{content:"";position:absolute;left:2px;top:15px;width:12px;height:7px;border-left:2.5px solid var(--copper-text);border-bottom:2.5px solid var(--copper-text);transform:rotate(-45deg)}

/* pricing */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
@media (max-width:760px){.price-grid{grid-template-columns:1fr}}
.price .amt{font-family:var(--serif);font-size:2.6rem;font-weight:600;margin:6px 0 2px;line-height:1.2}
.price .amt small{font-family:var(--sans);font-size:.95rem;font-weight:500;color:var(--muted)}
.price ul{padding-left:0;list-style:none;margin:18px 0 0}
.price li{padding:8px 0;border-top:1px solid var(--line);font-size:.95rem}
.price.featured{border:2px solid var(--ink)}
.includes{margin-top:28px;font-size:.95rem;color:var(--ink-2);max-width:60em}
.includes p{margin:0 0 .6em}

/* about */
.about-grid{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start}
.headshot{aspect-ratio:4/5;border-radius:var(--radius);overflow:hidden;background:#E8E2D8}
.headshot img{width:100%;height:100%;object-fit:cover}
.creds{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.creds span,.creds a{font-size:.82rem;font-weight:500;background:var(--white);border:1px solid var(--line);padding:6px 10px;border-radius:999px;text-decoration:none}
.creds a{border-color:#CFC7BA}
.creds a:hover{border-color:var(--ink)}
@media (max-width:760px){.about-grid{grid-template-columns:1fr}.headshot{max-width:240px}}

/* faq */
.faq{max-width:820px;margin-top:28px}
details{border-top:1px solid var(--line);padding:18px 0}
details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--serif);font-size:1.4rem;line-height:1;color:var(--copper-text)}
details[open] summary::after{content:"\2013"}
details p{margin:12px 0 0;color:var(--ink-2)}

/* form */
.form-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
@media (max-width:900px){.form-grid{grid-template-columns:1fr;gap:32px}}
form.card{padding:32px}
@media (max-width:420px){form.card{padding:22px}}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.row{grid-template-columns:1fr;gap:0}}
label{display:block;font-size:.88rem;font-weight:600;margin-bottom:6px}
label .opt{font-weight:400;color:var(--muted)}
input,select,textarea{width:100%;font:inherit;font-size:1rem;padding:12px 14px;border:1px solid #B9B0A2;border-radius:8px;background:#fff;color:var(--ink);margin-bottom:16px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--copper-2);outline-offset:1px;border-color:var(--copper)}
textarea{min-height:96px;resize:vertical}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-note,.card .form-note{font-size:.82rem;color:var(--muted);margin-top:12px}

footer.site{background:var(--ink);color:#AEB9C8;padding:56px 0 40px;font-size:.88rem}
footer.site .top{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:32px}
footer.site .brand{margin-bottom:10px}
footer.site .brand img{height:40px;width:auto}
footer.site a{color:#DCE3EC}
footer.site .links div{margin-bottom:4px}
footer.site .legal{border-top:1px solid #2A4062;padding-top:24px;font-size:.78rem;line-height:1.6;color:#8D9AAC}
footer.site .wrap > .legal:first-child{border-top:0;padding-top:0}

/* simple pages */
.page{max-width:760px}
.page h1{font-size:clamp(2rem,4.5vw,3rem)}
.page ol{padding-left:1.2em;color:var(--ink-2)}
.page ol li{margin-bottom:.5em}