/* the hidden attribute must win over display rules below */
[hidden]{display:none!important}
/* Photon Guidebooks store: /books/, /books/<slug>/, /my-ebooks/  (Concept A: navy + gold, Outfit) */
.bk{max-width:1160px;margin:0 auto;padding:0 24px}
@media(max-width:600px){.bk{padding:0 16px}}
.bk-hero{position:relative;overflow:hidden;padding:calc(var(--nav-height) + 40px) 0 64px;background:linear-gradient(135deg,var(--navy-deep) 0,#132b54 55%,var(--navy) 100%)}
.bk-hero::before{content:'';position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.04) 1px,transparent 1px);background-size:30px 30px;pointer-events:none}
.bk-crumbs{position:relative;font-size:13px;color:var(--text-muted);margin:0 0 26px;display:flex;flex-wrap:wrap;gap:6px}
.bk-crumbs a{color:var(--text-muted);text-decoration:underline;text-underline-offset:3px}
.bk-crumbs a:hover{color:var(--gold-light)}
.bk-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-light);background:rgba(240,165,0,.1);border:1px solid rgba(240,165,0,.28);padding:6px 14px;border-radius:100px;margin-bottom:18px}
.bk-hero h1{position:relative;font-size:clamp(32px,4.6vw,54px);line-height:1.08;color:#fff;font-weight:800;letter-spacing:-.02em;margin:0 0 16px;text-wrap:balance}
.bk-lead{position:relative;font-size:18px;color:var(--text-muted);max-width:60ch;margin:0 0 26px;line-height:1.7}
.bk-lead b{color:#e7edfa;font-weight:600}
.bk-by{color:#e7edfa;font-size:16px;margin:0 0 18px;font-weight:400}
.bk-hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
@media(max-width:900px){.bk-hero-grid{grid-template-columns:1fr;gap:32px}}
.bk-covers{position:relative;height:440px;max-width:460px;width:100%;justify-self:center}
.bk-covers img{position:absolute;width:62%;height:auto;border-radius:3px;box-shadow:0 24px 60px rgba(0,0,0,.55)}
.bk-covers img:first-child{left:0;top:0;z-index:2}
.bk-covers img:last-child{right:0;top:44px;z-index:1}
@media(max-width:600px){.bk-covers{height:auto;aspect-ratio:1/1;max-width:340px}}
.bk-facts{position:relative;display:flex;flex-wrap:wrap;gap:8px;margin:0 0 28px;padding:0}
.bk-facts li{font-size:13px;font-weight:600;color:#e7edfa;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:100px;padding:6px 13px}
.bk-ctas{display:flex;gap:12px;flex-wrap:wrap}
.bk-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--gold);color:var(--navy-deep);border-radius:4px;padding:14px 26px;font-weight:700;font-size:14px;letter-spacing:.03em;text-decoration:none;border:0;cursor:pointer;transition:transform .12s,box-shadow .2s;box-shadow:0 8px 24px rgba(240,165,0,.22);font-family:Outfit,sans-serif;line-height:1.2;text-align:center}
.bk-cta:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(240,165,0,.32);color:var(--navy-deep)}
.bk-cta.alt{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);box-shadow:none;font-weight:500}
.bk-cta.alt:hover{border-color:var(--gold);color:var(--gold-light)}
.bk-cta.navy{background:var(--navy-deep);color:#fff;box-shadow:none}
.bk-cta.navy:hover{background:var(--navy);color:#fff}
.bk-cta[disabled],.bk-cta.is-disabled{background:#d8dde6;color:#5a6378;box-shadow:none;cursor:not-allowed;transform:none}
.bk-cta.line{background:#fff;color:var(--navy-deep);border:1px solid rgba(13,31,60,.25);box-shadow:none}
.bk-cta.line:hover{border-color:var(--gold);color:#8a5a00}

/* light sections */
.bk-sec{padding:72px 0;background:#fff;color:var(--navy-deep)}
.bk-sec--off{background:var(--off-white)}
.bk-sec--dark{background:#0b1a33;color:#fff}
.bk-sec :where(h2){font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.01em;margin:0 0 12px;color:var(--navy-deep);text-wrap:balance}
.bk-sec--dark :where(h2){color:#fff}
.bk-sec :where(h3){font-size:19px;font-weight:700;color:var(--navy-deep);margin:0 0 8px}
.bk-sec :where(p,li){color:#3d4f65;font-size:16.5px;line-height:1.75;font-weight:400}
.bk-sec--dark :where(p,li){color:var(--text-muted)}
.bk-sec-head{max-width:720px;margin:0 0 36px}
.bk-kicker{font-size:12px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:#a86a00;margin:0 0 10px;display:block}
.bk-sec--dark .bk-kicker{color:var(--gold)}
.bk-prose{max-width:760px}
.bk.bk-prose{max-width:1160px}
.bk.bk-prose>*{max-width:760px}
.bk-sec :where(p,li,td) a{color:#8a5a00;text-decoration:underline;text-underline-offset:3px}
.bk-sec :where(p,li,td) a:hover{color:var(--navy)}
.bk-sec--dark :where(p,li) a{color:var(--gold-light)}
.bk-prose p{margin:0 0 16px}
.bk-prose ul{list-style:disc;padding-left:22px;margin:0 0 16px}
.bk-prose li{margin:0 0 6px}

/* cards grid (books index) */
.bk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,520px),1fr));gap:24px}
.bk-card{display:grid;grid-template-columns:150px 1fr;gap:20px;background:#fff;border:1px solid rgba(27,58,107,.12);border-radius:8px;padding:20px;box-shadow:0 2px 12px rgba(13,31,60,.05);transition:border-color .2s,box-shadow .2s,transform .2s}
.bk-card:hover{border-color:rgba(240,165,0,.5);box-shadow:0 10px 30px rgba(13,31,60,.1);transform:translateY(-2px)}
.bk-card img{width:150px;height:auto;border-radius:2px;box-shadow:0 6px 18px rgba(13,31,60,.25)}
.bk-card__series{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#a86a00;margin:0 0 6px}
.bk-card h3{font-size:18px;line-height:1.3;margin:0 0 8px}
.bk-card h3 a{color:var(--navy-deep)}
.bk-card h3 a:hover{color:#a86a00}
.bk-card p{font-size:14.5px;line-height:1.6;margin:0 0 12px;color:#4a5a70}
.bk-card__price{font-size:14px;font-weight:700;color:var(--navy-deep);margin:0 0 12px}
.bk-card__go{font-size:13px;font-weight:700;color:var(--navy);letter-spacing:.03em}
@media(max-width:420px){.bk-card{grid-template-columns:96px 1fr;gap:14px;padding:16px}.bk-card img{width:96px}}
.bk-pills{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px;padding:0}
.bk-pill{white-space:nowrap;line-height:1.4;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;border-radius:100px;padding:4px 10px;background:#e9f3ee;color:#1d6b46}
.bk-pill--soon{background:#f3efe4;color:#8a6a1d}
.bk-pill--navy{background:#e8edf6;color:var(--navy)}

/* feature cards */
.bk-feats{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;padding:0}
.bk-feat{background:#fff;border:1px solid rgba(27,58,107,.1);border-top:3px solid var(--gold);border-radius:6px;padding:20px 22px}
.bk-feat p{font-size:15px;line-height:1.65;margin:0}

/* contents */
.bk-toc{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:760px){.bk-toc{grid-template-columns:1fr}}
.bk-toc__vol{background:#fff;border:1px solid rgba(27,58,107,.12);border-radius:8px;padding:22px 24px}
.bk-toc__vol h3{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.bk-toc__vol h3 small{font-size:13px;font-weight:500;color:#5a6a7e}
.bk-toc ol{list-style:none;padding:0;margin:10px 0 0}
.bk-toc li{display:flex;gap:12px;padding:8px 0;border-top:1px solid rgba(27,58,107,.08);font-size:15.5px;color:var(--navy-deep);line-height:1.4}
.bk-toc li span{flex:0 0 28px;font-weight:700;color:#a86a00;text-align:right}

/* samples */
.bk-samples{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:0;margin:0 0 8px}
@media(max-width:900px){.bk-samples{grid-template-columns:repeat(2,1fr)}}
.bk-samples li{list-style:none}
.bk-samples button{display:block;width:100%;padding:0;border:1px solid rgba(27,58,107,.15);border-radius:4px;overflow:hidden;background:#fff;cursor:zoom-in;transition:box-shadow .2s,transform .2s}
.bk-samples button:hover,.bk-samples button:focus-visible{box-shadow:0 10px 26px rgba(13,31,60,.18);transform:translateY(-2px);outline:2px solid var(--gold);outline-offset:2px}
.bk-samples img{width:100%;height:auto;aspect-ratio:480/625}
.bk-samples figcaption{font-size:13px;line-height:1.5;color:#4a5a70;margin-top:8px}
.bk-sample-vol{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);margin:24px 0 12px}
.bk-lightbox{border:0;padding:0;background:transparent;max-width:min(96vw,760px);max-height:96vh;width:100%}
.bk-lightbox::backdrop{background:rgba(5,12,26,.86)}
.bk-lightbox img{width:100%;height:auto;max-height:86vh;object-fit:contain;background:#fff;border-radius:3px}
.bk-lightbox p{color:#fff;font-size:14px;text-align:center;margin:10px 0 0}
.bk-lightbox__x{position:absolute;top:8px;right:8px;width:40px;height:40px;border-radius:50%;background:rgba(13,31,60,.85);color:#fff;font-size:22px;line-height:40px;text-align:center;border:1px solid rgba(255,255,255,.3);cursor:pointer}

/* buy */
.bk-buy{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bk-buy--2{grid-template-columns:repeat(2,1fr);max-width:860px}
@media(max-width:900px){.bk-buy,.bk-buy--2{grid-template-columns:1fr}}
.bk-offer{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid rgba(27,58,107,.14);border-radius:10px;padding:22px}
.bk-offer--best{border:2px solid var(--gold);box-shadow:0 10px 30px rgba(240,165,0,.12)}
.bk-offer__flag{position:absolute;top:-12px;left:20px;background:var(--gold);color:var(--navy-deep);font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;border-radius:100px;padding:4px 10px}
.bk-offer__top{display:flex;gap:16px;align-items:flex-start;margin:0 0 14px}
.bk-offer__top img{width:76px;height:auto;border-radius:2px;box-shadow:0 4px 12px rgba(13,31,60,.25)}
.bk-offer__covers{position:relative;width:104px;height:110px;flex:0 0 104px}
.bk-offer__covers img{position:absolute;width:76px}
.bk-offer__covers img:last-child{left:28px;top:10px}
.bk-offer h3{font-size:18px;margin:0 0 4px}
.bk-offer__scope{font-size:13.5px !important;line-height:1.5 !important;color:#5a6a7e !important;margin:0}
.bk-offer ul{list-style:none;padding:0;margin:0 0 16px;flex:1}
.bk-offer li{font-size:14.5px;line-height:1.5;padding:5px 0 5px 22px;position:relative}
.bk-offer li::before{content:'';position:absolute;left:2px;top:11px;width:10px;height:6px;border-left:2px solid #1d6b46;border-bottom:2px solid #1d6b46;transform:rotate(-45deg)}
.bk-price{font-size:26px;font-weight:800;color:var(--navy-deep);margin:0 0 12px;line-height:1.2}
.bk-price small{display:block;font-size:12.5px;font-weight:500;color:#5a6a7e;margin-top:2px}
.bk-price--soon{font-size:18px;color:#8a6a1d}
.bk-offer .bk-cta{width:100%}
.bk-owned{display:block;text-align:center;font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#1d6b46;background:#e9f3ee;border-radius:100px;padding:5px 10px;margin:0 0 10px}
.bk-note{font-size:13.5px !important;line-height:1.6 !important;color:#5a6a7e !important;margin:10px 0 0}
.bk-err{display:none;margin:10px 0 0;font-size:13.5px;color:#9b1c1c;background:#fdecec;border-radius:6px;padding:8px 10px}
.bk-who{font-size:14.5px;margin:0 0 18px;padding:10px 14px;background:#fff;border:1px solid rgba(27,58,107,.12);border-left:3px solid var(--gold);border-radius:0 6px 6px 0}
.bk-print{margin-top:22px;display:flex;gap:16px;align-items:center;flex-wrap:wrap;background:#fff;border:1px dashed rgba(27,58,107,.25);border-radius:10px;padding:16px 20px}
.bk-print p{margin:0;font-size:15px}

/* compare */
.bk-compare{width:100%;border-collapse:collapse;background:#fff;border:1px solid rgba(27,58,107,.12);border-radius:8px;overflow:hidden;font-size:15px}
.bk-compare th,.bk-compare td{text-align:left;padding:12px 16px;border-top:1px solid rgba(27,58,107,.08);vertical-align:top;color:#3d4f65;line-height:1.5}
.bk-compare thead th{background:var(--navy-deep);color:#fff;font-weight:700;border-top:0}
.bk-compare tbody th{color:var(--navy-deep);font-weight:700;width:30%}
@media(max-width:600px){.bk-compare th,.bk-compare td{padding:10px 10px;font-size:14px}}

/* author */
.bk-author{display:grid;grid-template-columns:160px 1fr;gap:28px;align-items:start}
.bk-author img{width:160px;height:160px;object-fit:cover;border-radius:50%;border:3px solid var(--gold)}
@media(max-width:600px){.bk-author{grid-template-columns:1fr}.bk-author img{width:120px;height:120px}}

/* faq */
.bk-faq{max-width:820px}
.bk-faq details{background:#fff;border:1px solid rgba(27,58,107,.12);border-radius:8px;margin:0 0 10px;padding:0 18px}
.bk-faq summary{cursor:pointer;list-style:none;padding:16px 28px 16px 0;font-weight:700;font-size:16.5px;color:var(--navy-deep);position:relative}
.bk-faq summary::-webkit-details-marker{display:none}
.bk-faq summary::after{content:'+';position:absolute;right:0;top:12px;font-size:22px;color:#a86a00;font-weight:400}
.bk-faq details[open] summary::after{content:'–'}
.bk-faq details p{margin:0 0 16px;font-size:15.5px}
.bk-disclaimer{font-size:13.5px !important;color:#5a6a7e !important;line-height:1.6 !important;border-top:1px solid rgba(27,58,107,.12);padding-top:18px;margin-top:28px;max-width:820px}

/* how it works strip */
.bk-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:0;counter-reset:s}
@media(max-width:800px){.bk-steps{grid-template-columns:1fr}}
.bk-steps li{list-style:none;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:20px 22px;counter-increment:s}
.bk-steps li::before{content:counter(s);display:inline-flex;width:30px;height:30px;border-radius:50%;background:var(--gold);color:var(--navy-deep);font-weight:800;align-items:center;justify-content:center;margin-bottom:10px}
.bk-steps h3{color:#fff;font-size:17px}
.bk-steps p{font-size:15px;margin:0}

/* free sample */
.bk-card__sample{display:inline-block;margin-top:8px;font-size:13px;font-weight:700;color:#8a5a00;text-decoration:underline;text-underline-offset:3px}
.bk-free{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;background:#fff;border:1px solid rgba(27,58,107,.12);border-left:4px solid var(--gold);border-radius:8px;padding:18px 22px;margin:0 0 26px}
.bk-free h3{margin:0 0 4px}
.bk-free p{margin:0;font-size:15px}
.bk-included{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;background:#e9f3ee;border:1px solid #bfdccd;border-left:4px solid #1d6b46;border-radius:10px;padding:20px 22px}
#bkOwned,#bkIncluded{margin-bottom:18px}
.bk-included h3{margin:0 0 4px;color:#14532d}
.bk-included p{margin:0;font-size:15px}
.bk-included__go{display:flex;gap:10px;flex-wrap:wrap}