/* ============ DESIGN SYSTEM ============ */
:root {
  --ink: #16263F;
  --ink-2: #1E3354;
  --paper: #F5F0E6;
  --paper-2: #ECE4D3;
  --paper-line: #DCD2BC;
  --stamp: #C03A2B;
  --stamp-deep: #9E2C20;
  --brass: #A8884E;
  --brass-2: #C2A368;
  --teal: #1E5F63;
  --plum: #6E3B4E;
  --blue-cat: #3C5A78;
  --text: #1A2436;
  --muted: #5B6678;
  --paper-muted: #7E7460;
  --r: 14px;
  --maxw: 1180px;
  --shadow: 0 24px 60px -28px rgba(20,35,59,.45);
  --shadow-card: 0 18px 40px -26px rgba(20,35,59,.5);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Hanken Grotesk",system-ui,sans-serif;
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
::selection{background:var(--brass);color:#fff}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{
  font-family:"Space Mono",monospace;
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brass);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:"Hanken Grotesk",sans-serif;font-weight:600;font-size:15px;
  padding:14px 24px;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .18s ease,background .2s,color .2s,box-shadow .2s;
  line-height:1;text-decoration:none;
}
.btn:focus-visible{outline:3px solid var(--brass-2);outline-offset:3px}
.btn-primary{background:var(--stamp);color:#fff;box-shadow:0 10px 24px -12px rgba(192,58,43,.8);border:none}
.btn-primary:hover{transform:translateY(-2px);background:var(--stamp-deep)}
.btn-ghost{border-color:rgba(245,240,230,.35);color:var(--paper)}
.btn-ghost:hover{background:rgba(245,240,230,.08);transform:translateY(-2px)}
.btn-ink{background:var(--ink);color:var(--paper);border:none}
.btn-ink:hover{transform:translateY(-2px);background:var(--ink-2)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:var(--paper)}

/* ---------- topbar ---------- */
header.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(22,38,63,.95);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(168,136,78,.3);
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;color:var(--paper)}
.seal{
  width:34px;height:34px;border-radius:50%;
  border:1.5px solid var(--brass);display:grid;place-items:center;
  color:var(--brass);font-family:"Spectral",serif;font-weight:700;font-size:16px;
  flex:none;position:relative;
}
.seal::after{content:"";position:absolute;inset:3px;border-radius:50%;border:1px dotted rgba(168,136,78,.6)}
.brand b{font-family:"Space Mono",monospace;font-weight:700;letter-spacing:.16em;font-size:14px;text-transform:uppercase}
.brand-sub{display:block;font-size:10px;letter-spacing:.3em;color:var(--brass-2);font-family:"Space Mono",monospace;margin-top:2px}
nav.main{display:flex;align-items:center;gap:18px}
nav.main a{color:rgba(245,240,230,.75);font-size:13.5px;font-weight:500;transition:color .15s;white-space:nowrap}
nav.main a:hover{color:#fff}
nav.main a.active{color:var(--brass-2)}
.nav-cta{
  font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  border:1.5px solid var(--brass);color:var(--brass-2);padding:9px 16px;border-radius:999px;
}
.nav-cta:hover{background:var(--brass);color:var(--ink)!important}

/* ---------- guilloche ---------- */
.guilloche{position:absolute;inset:0;pointer-events:none}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:var(--paper);overflow:hidden}
.hero .wrap{
  position:relative;z-index:2;padding:84px 28px 92px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero h1{
  font-family:"Spectral",serif;font-weight:700;
  font-size:clamp(38px,5.2vw,64px);line-height:1.03;letter-spacing:-.01em;
  margin:18px 0 22px;
}
.hero h1 em{font-style:italic;color:var(--brass-2)}
.hero p.lede{font-size:19px;line-height:1.55;color:rgba(245,240,230,.82);max-width:30em;margin:0 0 30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.popular{
  font-family:"Space Mono",monospace;font-size:12.5px;color:rgba(245,240,230,.6);
  display:flex;align-items:center;gap:8px;margin-top:22px;
}
.popular b{color:var(--brass-2)}
.ticker{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--stamp);box-shadow:0 0 0 4px rgba(192,58,43,.25)}
.trust{border-top:1px solid rgba(168,136,78,.28);position:relative;z-index:2}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:22px 28px}
.trust .item{display:flex;flex-direction:column;gap:2px}
.trust .n{font-family:"Spectral",serif;font-weight:700;font-size:26px;color:var(--brass-2)}
.trust .l{font-family:"Space Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:rgba(245,240,230,.6)}

/* ---------- booklet ---------- */
.booklet{
  position:relative;border-radius:10px;
  background:linear-gradient(155deg,#fbf8f1,#ece3d1);
  box-shadow:var(--shadow);
  border:1px solid rgba(20,35,59,.12);
  padding:30px 28px 26px 38px;
  overflow:hidden;
}
.booklet::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:14px;
  background:var(--cat,var(--brass));
  box-shadow:inset -3px 0 6px rgba(0,0,0,.25);
}
.booklet::after{
  content:"";position:absolute;left:20px;top:18px;bottom:18px;width:1px;
  background:repeating-linear-gradient(to bottom,rgba(20,35,59,.25) 0 4px,transparent 4px 9px);
}
.booklet .bk-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}
.booklet .bk-form{font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--paper-muted)}
.booklet .bk-seal{
  width:46px;height:46px;border-radius:50%;flex:none;
  border:1.5px solid var(--cat,var(--brass));color:var(--cat,var(--brass));
  display:grid;place-items:center;font-family:"Spectral",serif;font-weight:700;font-size:11px;
  text-align:center;line-height:1;position:relative;background:rgba(255,255,255,.4);
}
.booklet .bk-seal::after{content:"";position:absolute;inset:4px;border-radius:50%;border:1px dotted currentColor;opacity:.55}
.booklet .bk-code{
  font-family:"Spectral",serif;font-weight:800;color:var(--ink);
  font-size:clamp(32px,4vw,50px);line-height:1;letter-spacing:-.01em;margin:20px 0 6px;
}
.booklet .bk-title{font-family:"Spectral",serif;font-weight:600;font-size:19px;color:var(--text);line-height:1.2}
.booklet .bk-meta{
  display:flex;gap:16px;margin-top:18px;flex-wrap:wrap;
  font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.06em;color:var(--paper-muted);
}
.booklet .bk-meta span{display:flex;align-items:center;gap:6px}
.booklet .bk-bar{position:absolute;left:38px;right:24px;bottom:14px;height:1px;background:var(--paper-line)}
.hero-booklet{transform:rotate(2.2deg);transition:transform .4s ease}
.hero-booklet:hover{transform:rotate(0deg)}

/* ---------- stamp ---------- */
.stamp{
  font-family:"Space Mono",monospace;font-weight:700;text-transform:uppercase;
  letter-spacing:.1em;color:var(--stamp);
  border:2.5px solid var(--stamp);border-radius:6px;
  padding:7px 13px;font-size:12px;line-height:1.15;text-align:center;
  box-shadow:inset 0 0 0 1px rgba(192,58,43,.35);
  opacity:.9;mix-blend-mode:multiply;
}
.stamp.round{border-radius:50%;width:78px;height:78px;display:grid;place-items:center;padding:0;border-width:2px;font-size:10px}
.stamp.tilt{transform:rotate(-11deg)}

/* ---------- library section ---------- */
section.library{padding:76px 0 90px}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:14px}
.sec-head h2{
  font-family:"Spectral",serif;font-weight:700;font-size:clamp(28px,3.6vw,42px);
  line-height:1.05;letter-spacing:-.01em;margin:8px 0 0;color:var(--ink);
}
.sec-head p{color:var(--muted);margin:6px 0 0;max-width:34em}
.guides-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* ---------- card ---------- */
.card{
  position:relative;background:#fff;border-radius:var(--r);
  border:1px solid var(--paper-line);box-shadow:var(--shadow-card);
  padding:26px 26px 22px;cursor:pointer;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .2s;
  display:flex;flex-direction:column;min-height:260px;color:inherit;
}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--cat,var(--brass));transition:width .2s}
.card:hover{transform:translateY(-5px);box-shadow:0 30px 60px -30px rgba(20,35,59,.55);border-color:var(--cat,var(--brass))}
.card:hover::before{width:9px}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:auto}
.card .cat-chip{font-family:"Space Mono",monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--cat,var(--brass));display:flex;align-items:center;gap:7px}
.card .cat-chip i{width:8px;height:8px;border-radius:2px;background:var(--cat,var(--brass));display:inline-block}
.card .form-no{font-family:"Space Mono",monospace;font-size:10.5px;color:var(--paper-muted);letter-spacing:.06em}
.card h3{font-family:"Spectral",serif;font-weight:700;font-size:22px;line-height:1.12;color:var(--ink);margin:16px 0 8px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.5;margin:0 0 16px}
.card-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--paper-2);padding-top:14px;margin-top:8px}
.card-foot .pages{font-family:"Space Mono",monospace;font-size:11px;color:var(--paper-muted);letter-spacing:.04em}
.card-foot .get{font-weight:600;font-size:14px;color:var(--stamp);display:flex;align-items:center;gap:5px;transition:gap .18s}
.card:hover .get{gap:10px}
.card .badge{
  position:absolute;top:18px;right:-1px;background:var(--stamp);color:#fff;
  font-family:"Space Mono",monospace;font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;
  padding:5px 12px 5px 10px;border-radius:4px 0 0 4px;box-shadow:0 6px 14px -6px rgba(192,58,43,.7);
}
.stamp-hover{
  position:absolute;right:18px;bottom:54px;opacity:0;transform:rotate(-11deg) scale(.8);
  transition:opacity .2s ease,transform .25s cubic-bezier(.2,1.5,.4,1);pointer-events:none;
}
.card:hover .stamp-hover{opacity:.92;transform:rotate(-11deg) scale(1)}

/* ---------- author ---------- */
section.author{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
section.author .wrap{position:relative;z-index:2;padding:78px 28px;display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:center}
.author-card{background:linear-gradient(155deg,#1f3556,#16263F);border:1px solid rgba(168,136,78,.3);border-radius:var(--r);padding:34px;position:relative}
.author-card .seal-lg{width:60px;height:60px;border-radius:50%;border:1.5px solid var(--brass);color:var(--brass);display:grid;place-items:center;font-family:"Spectral",serif;font-weight:700;font-size:24px;margin-bottom:18px;position:relative}
.author-card .seal-lg::after{content:"";position:absolute;inset:5px;border-radius:50%;border:1px dotted rgba(168,136,78,.6)}
.author-card h4{font-family:"Spectral",serif;font-size:24px;font-weight:700;margin:0 0 4px}
.author-card .role{font-family:"Space Mono",monospace;font-size:11.5px;letter-spacing:.1em;color:var(--brass-2);text-transform:uppercase;margin-bottom:18px}
.author-card ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.author-card li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:rgba(245,240,230,.85)}
.author-card li b{color:var(--brass-2);font-family:"Space Mono",monospace;font-weight:700;flex:none}
section.author h2{font-family:"Spectral",serif;font-weight:700;font-size:clamp(26px,3.4vw,38px);line-height:1.1;margin:14px 0 18px}
section.author .quote{font-family:"Spectral",serif;font-style:italic;font-size:20px;line-height:1.5;color:rgba(245,240,230,.92);border-left:3px solid var(--stamp);padding-left:20px;margin:0 0 22px}
section.author p.body{color:rgba(245,240,230,.78);max-width:34em;margin:0}

/* ---------- CTA box ---------- */
section.cta-section{padding:80px 0}
.cta-box{
  background:linear-gradient(160deg,#fff,#f3ecdc);
  border:1px solid var(--paper-line);border-radius:20px;padding:48px 44px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-box .stamp{position:absolute;top:24px;right:30px}
.cta-box h2{font-family:"Spectral",serif;font-weight:700;font-size:clamp(24px,3vw,34px);line-height:1.08;color:var(--ink);margin:8px 0 12px}
.cta-box p{color:var(--muted);margin:0;max-width:30em}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}

/* ---------- footer ---------- */
footer{background:#101B2E;color:rgba(245,240,230,.7);padding:54px 0 30px}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
footer .brand{margin-bottom:14px}
footer h5{font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--brass-2);margin:0 0 14px}
footer ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
footer ul a{font-size:14px;color:rgba(245,240,230,.7);transition:color .15s}
footer ul a:hover{color:#fff}
.disclaimer{border-top:1px solid rgba(168,136,78,.2);margin-top:40px;padding-top:22px;font-size:12.5px;line-height:1.6;color:rgba(245,240,230,.5);max-width:74ch}
.copy{margin-top:18px;font-family:"Space Mono",monospace;font-size:11px;letter-spacing:.06em;color:rgba(245,240,230,.4)}

/* ---------- guide page hero ---------- */
.guide-hero{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.back-link{
  position:relative;z-index:2;display:inline-flex;align-items:center;gap:8px;
  font-family:"Space Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--brass-2);padding:22px 0 0;
}
.back-link:hover{color:#fff}
.guide-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;
  padding:30px 28px 78px;align-items:start;
}
.guide-cover-col{position:sticky;top:90px}
.guide-cover{transform:rotate(-1.6deg)}
.g-cat{
  font-family:"Space Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:8px;color:var(--cat,var(--brass));margin-bottom:14px;
}
.g-cat i{width:9px;height:9px;border-radius:2px;background:var(--cat,var(--brass));display:inline-block}
.guide-info h1{
  font-family:"Spectral",serif;font-weight:700;
  font-size:clamp(30px,4vw,50px);line-height:1.04;letter-spacing:-.01em;margin:6px 0 16px;
}
.guide-info .sub{font-size:18px;color:rgba(245,240,230,.82);line-height:1.55;max-width:34em;margin:0 0 26px}
.specs{display:flex;gap:0;flex-wrap:wrap;border:1px solid rgba(168,136,78,.3);border-radius:12px;overflow:hidden;margin-bottom:30px}
.specs div{flex:1;min-width:100px;padding:16px 18px;border-right:1px solid rgba(168,136,78,.22)}
.specs div:last-child{border-right:none}
.specs .v{font-family:"Spectral",serif;font-weight:700;font-size:22px;color:var(--brass-2)}
.specs .k{font-family:"Space Mono",monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:rgba(245,240,230,.6);margin-top:3px}

/* ---------- capture form ---------- */
.capture{
  background:linear-gradient(160deg,#fbf8f1,#ece3d1);
  border-radius:16px;padding:28px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.capture .stamp{position:absolute;top:18px;right:20px}
.capture h3{font-family:"Spectral",serif;font-weight:700;font-size:22px;color:var(--ink);margin:0 0 4px}
.capture p.cap-sub{color:var(--paper-muted);font-size:14px;margin:0 0 20px}
.cap-field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.cap-field label{font-family:"Space Mono",monospace;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--paper-muted)}
.capture input[type="text"],
.capture input[type="email"],
.capture input[type="tel"]{
  font-family:"Hanken Grotesk",sans-serif;font-size:15.5px;padding:13px 16px;
  border:1.5px solid var(--paper-line);border-radius:10px;
  background:#fff;color:var(--text);width:100%;
}
.capture input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(22,38,63,.1)}
.capture select{
  font-family:"Hanken Grotesk",sans-serif;font-size:15px;padding:13px 36px 13px 16px;
  border:1.5px solid var(--paper-line);border-radius:10px;
  background:#fff;color:var(--text);width:100%;
  -webkit-appearance:none;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237E7460' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;cursor:pointer;
}
.capture select:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(22,38,63,.1)}
.form-section-divider{display:flex;align-items:center;gap:12px;margin:18px 0 16px}
.form-section-divider::before,.form-section-divider::after{content:"";flex:1;height:1px;background:var(--paper-line)}
.form-section-divider span{font-family:"Space Mono",monospace;font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--paper-muted);white-space:nowrap}
.capture .btn-primary{width:100%;justify-content:center;font-size:16px;padding:16px;margin-top:6px}
.cap-fine{font-family:"Space Mono",monospace;font-size:10.5px;color:var(--paper-muted);margin-top:14px;text-align:center;letter-spacing:.03em}
.cap-err{color:var(--stamp);font-size:13px;font-weight:600;margin-top:6px;min-height:0}

/* ---------- delivered state ---------- */
.delivered{display:none;text-align:center;padding:6px 0}
.delivered.show{display:block;animation:fadein .4s ease}
.delivered .stamp-big{margin:6px auto 18px;width:120px;height:120px;font-size:12px;mix-blend-mode:normal}
.delivered h3{font-family:"Spectral",serif;font-size:22px;color:var(--ink);margin:0 0 6px}
.delivered p{color:var(--paper-muted);font-size:14px;margin:0 0 18px}
.delivered .btn-line{width:100%;justify-content:center}
@keyframes fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes stamp-in{
  0%{opacity:0;transform:rotate(-11deg) scale(2.1)}
  55%{opacity:1;transform:rotate(-13deg) scale(.92)}
  72%{transform:rotate(-10deg) scale(1.04)}
  100%{opacity:.92;transform:rotate(-11deg) scale(1)}
}
.stamp-anim{animation:stamp-in .5s cubic-bezier(.2,.8,.3,1) both}

/* ---------- guide body / TOC ---------- */
.guide-body{background:var(--paper);padding:70px 0 90px}
.gb-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:54px;align-items:start}
.inside h2{font-family:"Spectral",serif;font-weight:700;font-size:30px;color:var(--ink);margin:0 0 6px}
.inside .lede{color:var(--muted);margin:0 0 26px}
.toc{list-style:none;padding:0;margin:0;counter-reset:toc}
.toc li{counter-increment:toc;display:flex;gap:18px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--paper-line)}
.toc li::before{content:counter(toc,decimal-leading-zero);font-family:"Space Mono",monospace;font-size:13px;color:var(--cat,var(--brass));font-weight:700;flex:none;width:32px}
.toc .t{font-family:"Spectral",serif;font-weight:600;font-size:18px;color:var(--ink)}
.toc .d{display:block;font-family:"Hanken Grotesk",sans-serif;font-weight:400;font-size:14px;color:var(--muted);margin-top:2px}
.whofor{background:#fff;border:1px solid var(--paper-line);border-radius:16px;padding:28px;box-shadow:var(--shadow-card);position:sticky;top:90px}
.whofor h3{font-family:"Space Mono",monospace;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--cat,var(--brass));margin:0 0 16px}
.whofor ul{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:12px}
.whofor li{display:flex;gap:11px;font-size:14.5px;color:var(--text);line-height:1.45}
.whofor li svg{flex:none;margin-top:3px}
.whofor .btn{width:100%;justify-content:center}
.related{padding:0 0 90px;background:var(--paper)}
.related h3{font-family:"Spectral",serif;font-weight:700;font-size:26px;color:var(--ink);margin:0 0 24px}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:40px;padding:60px 24px 70px}
  .hero-booklet{max-width:420px}
  .trust .wrap{grid-template-columns:repeat(2,1fr);gap:20px}
  .guides-grid{grid-template-columns:repeat(2,1fr)}
  section.author .wrap{grid-template-columns:1fr;gap:34px}
  .cta-box{grid-template-columns:1fr;gap:28px}
  .guide-grid{grid-template-columns:1fr;gap:28px;padding:20px 28px 60px}
  .guide-cover-col{position:static}
  .gb-grid{grid-template-columns:1fr;gap:34px}
  .whofor{position:static}
  footer .wrap{grid-template-columns:1fr 1fr}
  nav.main a:not(.nav-cta):not(.nav-home){font-size:12px}
  nav.main{gap:12px}
}
@media(max-width:680px){
  nav.main a:not(.nav-cta):not(.nav-home){display:none}
  /* hide booklet cover on mobile — gets user to form faster */
  .guide-cover-col{display:none}
  .guide-grid{gap:20px;padding:16px 20px 52px}
  .guide-info h1{font-size:clamp(26px,7vw,38px);margin-bottom:12px}
  .guide-info .sub{font-size:16px;margin-bottom:18px}
  /* compact specs into one row */
  .specs{flex-wrap:nowrap}
  .specs div{min-width:25%;padding:12px 8px;text-align:center}
  .specs .v{font-size:17px}
  .specs .k{font-size:9px;letter-spacing:.08em}
  .capture{padding:22px 18px}
  .capture h3{font-size:19px}
  /* hero home — compact so everything fits in one phone screen */
  .hero .wrap{padding:26px 20px 24px}
  .hero h1{font-size:clamp(28px,7.5vw,64px);margin:12px 0 14px}
  .hero p.lede{font-size:16px;margin:0 0 20px}
  .hero .popular{display:none}
  .hero-booklet{display:none}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{justify-content:center}
  /* trust bar — keep 4 items in one row on mobile */
  .trust .wrap{grid-template-columns:repeat(4,1fr);gap:6px;padding:14px 20px}
  .trust .n{font-size:18px}
  .trust .l{font-size:8.5px}
  /* author */
  section.author .wrap{padding:52px 20px}
  /* cta */
  section.cta-section{padding:52px 0}
  .cta-box{padding:30px 22px}
  /* guide body */
  .guide-body{padding:44px 0 60px}
  .gb-grid{gap:24px}
  .inside h2{font-size:24px}
  .toc li{gap:12px;padding:12px 0}
  .toc .t{font-size:16px}
  /* related */
  .related{padding:0 0 60px}
}
@media(max-width:560px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .guides-grid{grid-template-columns:1fr}
  .trust .wrap{grid-template-columns:repeat(4,1fr);gap:4px;padding:12px 16px}
  .trust .n{font-size:16px}
  footer .wrap{grid-template-columns:1fr}
  .cta-box{padding:28px 18px}
  .specs div{padding:10px 6px}
  .specs .v{font-size:15px}
  .specs .k{font-size:8.5px}
  .back-link{font-size:10px;padding:14px 0 0}
  .guide-grid{padding:12px 16px 44px}
  .card-foot{flex-wrap:wrap;gap:6px}
  .card h3{font-size:18px}
  .card p{font-size:13.5px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}