/* ============================================================
   QUARTERDECK ADVISORY — design system
   Palette: chart paper / ink navy / sea slate / signal red
   Type: Spectral (display) · Source Sans 3 (body) · IBM Plex Mono (labels)
   ============================================================ */

:root{
  --paper:#F5F3EA;
  --paper-deep:#EDEAD9;
  --ink:#182A3E;
  --sea:#2E4A63;
  --mist:#7C8C9C;
  --contour:#D9D3BD;
  --signal:#B03A2E;
  --white:#FEFDF9;
  --maxw:1060px;
  --serif:"Spectral",Georgia,serif;
  --sans:"Source Sans 3","Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono","Courier New",monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:1.075rem;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

/* ---------- type ---------- */
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.3rem)}
h3{font-size:1.25rem;font-weight:600}
p{max-width:62ch}
a{color:var(--sea)}
a:focus-visible,button:focus-visible{outline:3px solid var(--signal);outline-offset:3px}

.eyebrow{
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--signal);
  display:block;
  margin-bottom:.9rem;
}
.coord{color:var(--mist);font-family:var(--mono);font-size:.72rem;letter-spacing:.14em}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.4rem}
section{padding:4.2rem 0;border-bottom:1px solid var(--contour)}
section:last-of-type{border-bottom:none}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
@media(max-width:820px){.grid2,.grid3{grid-template-columns:1fr}}

/* ---------- header ---------- */
header.site{
  border-bottom:2px solid var(--ink);
  background:var(--paper);
  position:sticky;top:0;z-index:20;
}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:.85rem;padding-bottom:.85rem;gap:1rem;flex-wrap:wrap}
.wordmark{font-family:var(--serif);font-weight:600;font-size:1.12rem;color:var(--ink);text-decoration:none;letter-spacing:.02em}
.wordmark span{font-family:var(--mono);font-weight:400;font-size:.66rem;letter-spacing:.16em;color:var(--sea);display:block;text-transform:uppercase}
nav.main{display:flex;gap:1.4rem;align-items:center;flex-wrap:wrap}
nav.main a{font-family:var(--sans);font-size:.92rem;text-decoration:none;color:var(--ink)}
nav.main a:hover{color:var(--signal)}
nav.main a.active{border-bottom:2px solid var(--signal)}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;
  font-family:var(--sans);
  font-weight:600;
  font-size:1rem;
  padding:.8rem 1.6rem;
  background:var(--signal);
  color:var(--white);
  text-decoration:none;
  border:2px solid var(--signal);
  transition:background .15s,color .15s;
}
.btn:hover{background:#8F2E24;border-color:#8F2E24}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--white)}
.btn.small{font-size:.9rem;padding:.55rem 1.1rem}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:2px solid var(--ink);padding:5rem 0 4.5rem}
.hero .chart{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.hero .wrap{position:relative;z-index:2}
.hero p.lede{font-size:1.22rem;max-width:56ch;margin:1.4rem 0 2.2rem;color:var(--sea)}

/* ---------- photo slots ---------- */
figure.photo{margin:0}
figure.photo .slot{
  border:2px dashed var(--mist);
  background:repeating-linear-gradient(45deg,var(--paper-deep),var(--paper-deep) 12px,var(--paper) 12px,var(--paper) 24px);
  aspect-ratio:3/2;
  display:flex;align-items:center;justify-content:center;
  padding:1rem;text-align:center;
}
figure.photo .slot span{font-family:var(--mono);font-size:.75rem;letter-spacing:.08em;color:var(--sea);max-width:34ch}
figure.photo img{width:100%;height:auto;display:block;border:1px solid var(--contour)}
figure.photo figcaption{font-family:var(--mono);font-size:.72rem;color:var(--mist);margin-top:.55rem;letter-spacing:.06em}

/* ---------- cards / tariff tables ---------- */
.card{
  background:var(--white);
  border:1px solid var(--contour);
  border-top:3px solid var(--ink);
  padding:1.8rem 1.6rem;
  display:flex;flex-direction:column;gap:.9rem;
}
.card.feature{border-top-color:var(--signal)}
.card .price{font-family:var(--serif);font-size:1.7rem;font-weight:600}
.card .price small{font-family:var(--mono);font-size:.7rem;color:var(--mist);display:block;letter-spacing:.1em;margin-top:.2rem}
.card ul{list-style:none;display:flex;flex-direction:column;gap:.45rem;font-size:.95rem}
.card ul li{padding-left:1.15rem;position:relative}
.card ul li::before{content:"—";position:absolute;left:0;color:var(--signal)}
.card .btn{margin-top:auto;text-align:center}

/* ---------- guarantee note ---------- */
.guarantee{
  border:1.5px solid var(--signal);
  background:var(--white);
  padding:1.2rem 1.4rem 1.2rem 3.2rem;
  position:relative;
  max-width:62ch;
  margin:1.6rem 0 0;
}
.guarantee::before{
  content:"✓";
  position:absolute;left:1.1rem;top:1.05rem;
  font-family:var(--mono);font-weight:700;color:var(--signal);font-size:1.1rem;
}
.guarantee strong{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--signal);display:block;margin-bottom:.35rem}
.guarantee p{font-size:.98rem;margin:0}

/* ---------- problem list ---------- */
ul.problems{list-style:none;display:flex;flex-direction:column;gap:.85rem;max-width:60ch}
ul.problems li{padding-left:1.6rem;position:relative;font-size:1.05rem}
ul.problems li::before{content:"×";position:absolute;left:0;top:-1px;color:var(--signal);font-family:var(--mono);font-weight:700}

/* ---------- comparison strip ---------- */
.versus{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--contour);background:var(--white)}
.versus>div{padding:1.6rem}
.versus>div:first-child{border-right:1px solid var(--contour)}
.versus h3{margin-bottom:.7rem}
.versus .them h3{color:var(--mist)}
.versus .me h3{color:var(--signal)}
@media(max-width:680px){.versus{grid-template-columns:1fr}.versus>div:first-child{border-right:none;border-bottom:1px solid var(--contour)}}

/* ---------- log-style step list ---------- */
ol.log{list-style:none;counter-reset:log;display:flex;flex-direction:column;gap:1.5rem;max-width:64ch}
ol.log li{counter-increment:log;padding-left:3.4rem;position:relative}
ol.log li::before{
  content:counter(log,decimal-leading-zero);
  position:absolute;left:0;top:.1rem;
  font-family:var(--mono);font-size:.8rem;color:var(--signal);
  border:1px solid var(--contour);background:var(--white);
  padding:.25rem .45rem;
}
ol.log li strong{font-family:var(--serif);font-size:1.12rem;font-weight:600;display:block;margin-bottom:.25rem}

/* ---------- FAQ ---------- */
details.faq{border-bottom:1px solid var(--contour);padding:1.05rem 0;max-width:70ch}
details.faq summary{font-family:var(--serif);font-weight:600;font-size:1.08rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem}
details.faq summary::after{content:"+";font-family:var(--mono);color:var(--signal)}
details.faq[open] summary::after{content:"–"}
details.faq p{margin-top:.7rem;color:var(--sea)}

/* ---------- article ---------- */
article.guide{max-width:70ch;margin:0 auto;padding:3.5rem 1.4rem 4.5rem}
article.guide h1{margin-bottom:.6rem}
article.guide .meta{font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;color:var(--mist);margin-bottom:2.2rem}
article.guide h2{margin:2.6rem 0 .9rem}
article.guide h3{margin:1.8rem 0 .6rem}
article.guide p{margin-bottom:1.05rem;max-width:none}
article.guide table{width:100%;border-collapse:collapse;margin:1.4rem 0;font-size:.95rem;background:var(--white)}
article.guide th,article.guide td{border:1px solid var(--contour);padding:.6rem .8rem;text-align:left}
article.guide th{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;background:var(--paper-deep)}
article.guide td.num{font-family:var(--mono);font-size:.86rem;text-align:right}
.placeholder{background:#FBEFC9;border-bottom:1.5px dashed var(--signal);padding:0 .15rem}
.cta-inline{border:1px solid var(--ink);background:var(--white);padding:1.4rem 1.5rem;margin:2.2rem 0}
.cta-inline p{margin-bottom:.9rem}

/* ---------- guide cards ---------- */
.guide-card{background:var(--white);border:1px solid var(--contour);padding:1.5rem;display:flex;flex-direction:column;gap:.6rem;text-decoration:none;color:var(--ink)}
.guide-card:hover h3{color:var(--signal)}
.guide-card .coord{margin-top:auto}

/* ---------- footer ---------- */
footer.site{background:var(--ink);color:var(--paper);padding:3.2rem 0 2.4rem;border-top:3px solid var(--signal)}
footer.site a{color:var(--paper)}
footer.site .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem}
footer.site h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--mist);margin-bottom:.8rem}
footer.site ul{list-style:none;display:flex;flex-direction:column;gap:.4rem;font-size:.92rem}
footer.site p{font-size:.92rem;max-width:44ch}
footer.site .coord{display:block;margin-top:1.4rem}
@media(max-width:680px){footer.site .wrap{grid-template-columns:1fr}}