/* FlipCatalog - dark navy + amber developer-tool aesthetic */
:root{
  --bg:           #0b1220;
  --bg-2:         #0f1828;
  --bg-3:         #131f33;
  --bg-elev:      #182742;
  --line:         #1f2d47;
  --line-2:       #2a3b5c;
  --text:         #e7ecf5;
  --text-dim:     #9aa6bf;
  --text-mute:    #6b7896;
  --amber:        #f59e0b;
  --amber-soft:   #fbbf24;
  --amber-deep:   #b45309;
  --teal:         #5eead4;
  --rose:         #fb7185;
  --shadow:       0 12px 40px rgba(0,0,0,.45);
  --radius:       14px;
  --radius-sm:    8px;
  --maxw:         1200px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-feature-settings:"ss01","cv11";line-height:1.6;-webkit-font-smoothing:antialiased}
body{background:radial-gradient(1200px 600px at 70% -10%, rgba(245,158,11,.08), transparent 60%),radial-gradient(1000px 500px at -10% 30%, rgba(94,234,212,.05), transparent 55%),var(--bg)}

a{color:var(--amber);text-decoration:none;transition:color .15s}
a:hover{color:var(--amber-soft);text-decoration:underline;text-underline-offset:3px}

h1,h2,h3,h4{font-family:'Space Grotesk',-apple-system,sans-serif;font-weight:700;letter-spacing:-.018em;color:#fff;line-height:1.15;margin:0 0 .6em}
h1{font-size:clamp(2rem,4.5vw,3.4rem);font-weight:800;letter-spacing:-.025em}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
h3{font-size:1.25rem}
h4{font-size:1rem;letter-spacing:.02em}

p{margin:0 0 1rem;color:var(--text)}
.muted{color:var(--text-dim)}
.kicker{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:.78rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--amber);background:rgba(245,158,11,.1);border:1px solid rgba(245,158,11,.25);padding:.35rem .65rem;border-radius:999px}

code,pre{font-family:'JetBrains Mono',ui-monospace,monospace}
code{background:var(--bg-3);color:var(--amber-soft);padding:.1em .4em;border-radius:4px;font-size:.92em;border:1px solid var(--line)}
pre{background:#0a1322;border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.2rem;overflow-x:auto;color:#e7ecf5;line-height:1.55;font-size:.9rem;box-shadow:inset 0 0 0 1px rgba(255,255,255,.02)}
pre code{background:none;border:0;color:inherit;padding:0;font-size:1em}

.container{max-width:var(--maxw);margin:0 auto;padding:0 1.4rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,18,32,.85);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:1.6rem;padding:.95rem 1.4rem}
.brand{display:flex;align-items:center;gap:.65rem;font-family:'Space Grotesk',sans-serif;font-weight:800;font-size:1.18rem;color:#fff !important;text-decoration:none !important;letter-spacing:-.01em}
.brand:hover{color:var(--amber)!important}
.brand-mark{position:relative;display:inline-block;width:32px;height:26px;perspective:80px}
.bm-page{position:absolute;left:0;top:0;width:50%;height:100%;background:linear-gradient(135deg,var(--amber),var(--amber-deep));border-radius:2px 0 0 2px;transform-origin:right center;box-shadow:0 1px 4px rgba(0,0,0,.4)}
.bm-page.bm-p1{background:linear-gradient(135deg,#fbbf24,#d97706);transform:rotateY(0deg);z-index:3}
.bm-page.bm-p2{left:50%;background:linear-gradient(135deg,#f59e0b,#92400e);transform-origin:left center;z-index:2;border-radius:0 2px 2px 0}
.bm-page.bm-p3{background:linear-gradient(135deg,#fde68a,#b45309);transform:rotateY(-22deg);z-index:1;opacity:.7}

.primary-nav{display:flex;gap:1.3rem;flex:1;margin-left:.6rem}
.primary-nav a{color:var(--text-dim);font-weight:500;font-size:.94rem;padding:.4rem 0;border-bottom:2px solid transparent;text-decoration:none}
.primary-nav a:hover,.primary-nav a.active{color:#fff;border-bottom-color:var(--amber);text-decoration:none}
.nav-search input{background:var(--bg-3);border:1px solid var(--line);color:var(--text);padding:.55rem .9rem;border-radius:999px;width:220px;font-family:inherit;font-size:.88rem}
.nav-search input:focus{outline:none;border-color:var(--amber);background:var(--bg-elev)}
.nav-search input::placeholder{color:var(--text-mute)}

.site-main{min-height:60vh;padding:2.6rem 0 4rem}

/* HERO */
.hero{position:relative;padding:2rem 0 3.5rem;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.hero h1{margin-top:.6rem;background:linear-gradient(180deg,#fff 30%,#cbd5e1 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero h1 .accent{background:linear-gradient(180deg,var(--amber-soft) 0%,var(--amber-deep) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:1.15rem;color:var(--text-dim);max-width:36rem;margin-bottom:1.6rem}
.hero-stats{display:flex;gap:2rem;margin-top:1.8rem;padding-top:1.5rem;border-top:1px solid var(--line)}
.hero-stat{display:flex;flex-direction:column}
.hero-stat-num{font-family:'Space Grotesk',sans-serif;font-size:1.7rem;font-weight:800;color:var(--amber)}
.hero-stat-label{font-size:.78rem;color:var(--text-mute);text-transform:uppercase;letter-spacing:.1em;margin-top:.2rem}

.cta-row{display:flex;gap:.8rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.4rem;border-radius:10px;font-weight:600;font-family:'Inter',sans-serif;font-size:.95rem;border:1px solid transparent;text-decoration:none;cursor:pointer;transition:all .15s}
.btn-primary{background:linear-gradient(180deg,var(--amber-soft),var(--amber));color:#1a1206;box-shadow:0 6px 20px rgba(245,158,11,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(245,158,11,.42);text-decoration:none;color:#1a1206}
.btn-secondary{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn-secondary:hover{border-color:var(--amber);color:var(--amber);text-decoration:none}

/* Animated CSS flipbook in hero */
.hero-book-wrap{position:relative;display:flex;align-items:center;justify-content:center;perspective:1400px}
.hero-book{position:relative;width:380px;height:280px;transform-style:preserve-3d}
.hero-book-spine{position:absolute;left:50%;top:-12px;bottom:-12px;width:6px;background:linear-gradient(180deg,#1a2440,#0a1322);border-radius:3px;transform:translateX(-50%);box-shadow:0 0 30px rgba(0,0,0,.6)}
.hero-page{position:absolute;top:0;width:50%;height:100%;background:linear-gradient(135deg,#1a2740,#0f1a2e);border:1px solid var(--line-2);transform-origin:right center;box-shadow:inset 0 0 60px rgba(0,0,0,.4),0 4px 14px rgba(0,0,0,.5);overflow:hidden}
.hero-page.left{left:0;border-radius:6px 0 0 6px}
.hero-page.right{left:50%;border-radius:0 6px 6px 0;transform-origin:left center}
.hero-page-inner{padding:18px 16px;font-family:'JetBrains Mono',monospace;font-size:.62rem;color:var(--text-dim);line-height:1.35;height:100%;background:linear-gradient(180deg,rgba(245,158,11,.04) 0%,transparent 30%)}
.hp-title{font-family:'Space Grotesk',sans-serif;color:var(--amber);font-size:.78rem;font-weight:700;letter-spacing:.04em;margin-bottom:6px;text-transform:uppercase}
.hp-line{height:6px;background:linear-gradient(90deg,var(--text-dim),transparent);border-radius:2px;margin:5px 0;opacity:.4}
.hp-line.short{width:60%}.hp-line.med{width:82%}.hp-img{width:100%;height:48px;background:linear-gradient(135deg,rgba(245,158,11,.25),rgba(94,234,212,.15));border-radius:3px;margin:8px 0;border:1px solid rgba(245,158,11,.2)}

/* The flipping page on top, animated */
.hero-flip{position:absolute;top:0;left:50%;width:50%;height:100%;transform-origin:left center;transform-style:preserve-3d;animation:fc-flip 7s ease-in-out infinite;z-index:5}
.hero-flip-front,.hero-flip-back{position:absolute;inset:0;backface-visibility:hidden;border:1px solid var(--line-2);background:linear-gradient(135deg,#1a2740,#0f1a2e);box-shadow:inset 0 0 60px rgba(0,0,0,.4);border-radius:0 6px 6px 0;overflow:hidden}
.hero-flip-back{transform:rotateY(180deg);border-radius:6px 0 0 6px}
@keyframes fc-flip{
  0%   { transform:rotateY(0deg); }
  35%  { transform:rotateY(-180deg); }
  55%  { transform:rotateY(-180deg); }
  90%  { transform:rotateY(0deg); }
  100% { transform:rotateY(0deg); }
}
.flip-shadow{position:absolute;top:0;bottom:0;left:50%;width:30px;background:linear-gradient(90deg,rgba(0,0,0,.45),transparent);pointer-events:none;animation:fc-shadow 7s ease-in-out infinite;z-index:4}
@keyframes fc-shadow{0%,100%{opacity:.6}45%,55%{opacity:0}}

.hero-book-tag{position:absolute;top:-20px;right:8px;background:var(--bg-elev);border:1px solid var(--amber);padding:.3rem .65rem;border-radius:6px;font-family:'JetBrains Mono',monospace;font-size:.7rem;color:var(--amber);font-weight:600;box-shadow:0 6px 18px rgba(0,0,0,.35)}
.hero-book-pulse{position:absolute;bottom:-30px;left:50%;transform:translateX(-50%);display:flex;gap:6px;align-items:center;font-family:'JetBrains Mono',monospace;font-size:.7rem;color:var(--text-mute)}
.hero-book-pulse-dot{width:8px;height:8px;background:var(--teal);border-radius:50%;animation:fc-pulse 1.6s ease-in-out infinite;box-shadow:0 0 12px var(--teal)}
@keyframes fc-pulse{0%,100%{opacity:.4;transform:scale(.85)}50%{opacity:1;transform:scale(1.1)}}

/* SECTIONS */
.section{padding:3rem 0}
.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:2rem;gap:1rem;flex-wrap:wrap}
.section-head h2{margin:0}
.section-head p{margin:0;color:var(--text-dim)}

/* CARDS / GRID */
.grid{display:grid;gap:1.2rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:1fr 1fr}
.tool-card,.lib-card,.card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;transition:all .18s;display:flex;flex-direction:column;gap:.65rem;position:relative;overflow:hidden}
.tool-card:hover,.lib-card:hover,.card:hover{border-color:var(--amber);transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.4)}
.tool-card h3,.lib-card h3{margin:0;font-size:1.1rem}
.tool-card h3 a,.lib-card h3 a{color:#fff;text-decoration:none}
.tool-card h3 a:hover,.lib-card h3 a:hover{color:var(--amber)}
.tool-card-meta{display:flex;gap:.6rem;flex-wrap:wrap;font-size:.78rem;color:var(--text-mute)}
.tool-card p{font-size:.92rem;color:var(--text-dim);margin:0}

.badge{display:inline-block;font-size:.7rem;padding:.2rem .55rem;border-radius:4px;font-family:'JetBrains Mono',monospace;font-weight:600;letter-spacing:.04em;text-transform:uppercase;border:1px solid var(--line-2)}
.badge-free{background:rgba(94,234,212,.1);color:var(--teal);border-color:rgba(94,234,212,.3)}
.badge-freemium{background:rgba(245,158,11,.1);color:var(--amber);border-color:rgba(245,158,11,.3)}
.badge-paid{background:rgba(251,113,133,.1);color:var(--rose);border-color:rgba(251,113,133,.3)}
.badge-lic{background:var(--bg-3);color:var(--text-dim);border-color:var(--line)}
.badge-stars{background:rgba(245,158,11,.08);color:var(--amber-soft);border-color:rgba(245,158,11,.25)}

/* CATEGORY TILES */
.cat-tile{padding:1.5rem;background:linear-gradient(180deg,var(--bg-2),var(--bg-3));border:1px solid var(--line);border-radius:var(--radius);transition:all .18s;display:block;text-decoration:none}
.cat-tile:hover{border-color:var(--amber);text-decoration:none;transform:translateY(-2px)}
.cat-tile h3{color:#fff;margin:0 0 .35em}
.cat-tile p{color:var(--text-dim);font-size:.9rem;margin:0}
.cat-tile-count{display:inline-block;margin-top:.7rem;font-family:'JetBrains Mono',monospace;font-size:.75rem;color:var(--amber)}

/* DETAIL LAYOUTS */
.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:2.4rem}
.detail-main h1{margin-bottom:.4rem}
.detail-meta{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin-bottom:1.5rem}
.detail-tagline{font-size:1.15rem;color:var(--text-dim);margin-bottom:1.6rem;line-height:1.5}
.detail-section{margin-top:2.2rem}
.detail-section h2{font-size:1.4rem;margin-bottom:.8rem}
.detail-section h3{font-size:1.1rem;color:var(--amber-soft);margin-top:1.6rem}

.feature-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.92rem}
.feature-table th,.feature-table td{padding:.7rem .9rem;border-bottom:1px solid var(--line);text-align:left}
.feature-table th{font-family:'JetBrains Mono',monospace;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-mute);font-weight:600;background:var(--bg-2)}
.feature-table td.yes{color:var(--teal)}.feature-table td.no{color:var(--text-mute)}
.feature-table tr:hover td{background:rgba(245,158,11,.03)}

/* SIDEBAR */
.detail-side{display:flex;flex-direction:column;gap:1.4rem;position:sticky;top:5rem;align-self:start}
.side-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.3rem}
.side-card h2,.side-card h3,.side-card h4,.side-card .card-h{margin:0 0 .8rem;font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-mute);font-family:'JetBrains Mono',monospace}
.side-card .stat{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid var(--line);font-size:.92rem}
.side-card .stat:last-child{border-bottom:0}
.side-card .stat-key{color:var(--text-dim)}
.side-card .stat-val{color:#fff;font-family:'JetBrains Mono',monospace;font-size:.88rem}
.side-card ul{list-style:none;padding:0;margin:0}
.side-card ul li{padding:.4rem 0;border-bottom:1px dashed var(--line);font-size:.9rem}
.side-card ul li:last-child{border-bottom:0}
.side-card a{color:var(--text)}

/* RECOMMENDED block (PBN sidebar) */
.recommend-block{background:linear-gradient(180deg,var(--bg-2),var(--bg-3));border:1px solid var(--line-2);border-radius:var(--radius);padding:1.2rem 1.3rem}
.recommend-title,h2.recommend-title,h3.recommend-title{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--amber);margin:0 0 .9rem;font-family:'JetBrains Mono',monospace}
.recommend-link-empty,.footer-recommend-link-empty{cursor:default}
.inline-link-empty{font-style:italic;color:var(--text-dim)}
.detail-byline{display:block;margin:.4rem 0 1.2rem;font-size:.85rem;color:var(--text-dim);font-family:'JetBrains Mono',monospace}
.detail-byline a{color:var(--text-dim);text-decoration:underline;text-decoration-color:var(--line)}
.recommend-list{list-style:none;padding:0;margin:0}
.recommend-item{padding:.6rem 0;border-bottom:1px dashed var(--line)}
.recommend-item:last-child{border-bottom:0}
.recommend-link{display:block;text-decoration:none;color:var(--text)}
.recommend-link:hover{color:var(--amber);text-decoration:none}
.recommend-link:hover .recommend-text{color:var(--amber)}
.recommend-kicker{display:block;font-family:'JetBrains Mono',monospace;font-size:.68rem;color:var(--text-mute);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.18rem}
.recommend-text{display:block;font-size:.9rem;line-height:1.4;color:var(--text)}

.inline-link{color:var(--amber);font-weight:500;border-bottom:1px dashed var(--amber-deep);text-decoration:none}
.inline-link:hover{border-bottom-style:solid;text-decoration:none}

/* COMPARISON */
.cmp-table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.92rem;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.cmp-table th,.cmp-table td{padding:.85rem 1rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.cmp-table th{background:var(--bg-3);font-family:'JetBrains Mono',monospace;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--amber);font-weight:600}
.cmp-table th:first-child{color:var(--text-mute)}
.cmp-table td:first-child{font-weight:600;color:var(--text-dim);width:170px;font-family:'JetBrains Mono',monospace;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}

/* FOOTER */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);margin-top:4rem;padding:3rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.4fr;gap:2.5rem;padding:0 1.4rem}
.footer-col h2,.footer-col h3,.footer-col h4,.footer-col .footer-col-h{font-family:'Space Grotesk',sans-serif;font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:#fff;margin:0 0 .9rem}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{padding:.3rem 0;font-size:.92rem}
.footer-list a{color:var(--text-dim);text-decoration:none}
.footer-list a:hover{color:var(--amber);text-decoration:none}
.footer-recommend-list{list-style:none;padding:0;margin:0}
.footer-recommend-list li{padding:.45rem 0;border-bottom:1px dashed var(--line)}
.footer-recommend-list li:last-child{border-bottom:0}
.footer-recommend-link{display:block;text-decoration:none;color:var(--text)}
.footer-recommend-link:hover{color:var(--amber);text-decoration:none}
.footer-recommend-kicker{display:block;font-family:'JetBrains Mono',monospace;font-size:.65rem;color:var(--text-mute);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.15rem}
.footer-recommend-text{display:block;font-size:.86rem;line-height:1.35}
.footer-recommend-link:hover .footer-recommend-text{color:var(--amber)}
.brand-footer{margin-bottom:.9rem}
.footer-bottom{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--text-mute);flex-wrap:wrap;gap:.8rem}
.footer-bottom-links a{color:var(--text-mute);margin:0 .15rem}
.footer-bottom-links a:hover{color:var(--amber);text-decoration:none}

/* PAGINATION */
.pagination{display:flex;gap:.4rem;justify-content:center;margin:2.5rem 0;flex-wrap:wrap}
.pagination a,.pagination span{padding:.55rem .85rem;border-radius:6px;font-family:'JetBrains Mono',monospace;font-size:.85rem;border:1px solid var(--line);background:var(--bg-2);color:var(--text-dim);text-decoration:none}
.pagination a:hover{border-color:var(--amber);color:var(--amber)}
.pagination .current{background:var(--amber);color:#1a1206;border-color:var(--amber);font-weight:700}

/* PROSE */
.prose{max-width:48rem}
.prose p{font-size:1rem;line-height:1.75}
.prose h2{margin-top:2.2rem;font-size:1.45rem}
.prose h3{margin-top:1.6rem;color:var(--amber-soft);font-size:1.15rem}
.prose ul,.prose ol{padding-left:1.4rem;margin:0 0 1.2rem}
.prose ul li,.prose ol li{margin:.4rem 0;color:var(--text)}
.prose blockquote{border-left:3px solid var(--amber);padding:.5rem 0 .5rem 1.2rem;color:var(--text-dim);font-style:italic;margin:1.5rem 0;background:rgba(245,158,11,.04)}

/* TAGS */
.tag-row{display:flex;flex-wrap:wrap;gap:.4rem}
.tag{display:inline-block;background:var(--bg-3);border:1px solid var(--line-2);color:var(--text-dim);padding:.25rem .65rem;border-radius:6px;font-size:.78rem;font-family:'JetBrains Mono',monospace;text-decoration:none}
.tag:hover{border-color:var(--amber);color:var(--amber);text-decoration:none}

/* SEARCH */
.search-form{display:flex;gap:.5rem;margin:1.5rem 0}
.search-form input{flex:1;background:var(--bg-3);border:1px solid var(--line);color:var(--text);padding:.85rem 1.1rem;border-radius:8px;font-family:inherit;font-size:1rem}
.search-form input:focus{outline:none;border-color:var(--amber)}

/* RESPONSIVE: base */
@media(max-width:1100px){
  .hero-grid{grid-template-columns:1.15fr .85fr;gap:2.2rem}
  .hero h1{font-size:clamp(2rem,4.2vw,2.8rem)}
}
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:2rem}
  .hero-book{width:300px;height:220px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .detail-grid{grid-template-columns:1fr}
  .detail-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.6rem}
}
@media(max-width:580px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-stats{flex-wrap:wrap;gap:1rem 1.6rem}
}

/* ===== POLISH (v2) ===== */
/* Generous whitespace for body sections */
.detail-main .prose h2{margin-top:2.6rem;padding-top:.4rem;border-top:1px solid var(--line)}
.detail-main .prose h2:first-of-type{border-top:0;padding-top:0;margin-top:1.2rem}
.detail-main .prose p{font-size:1.02rem;line-height:1.72}
.detail-main .prose ul li{margin:.45rem 0;line-height:1.6}

/* Tag-row → nicer chip links on use-case index */
.tag-row{display:flex;flex-wrap:wrap;gap:.45rem}
.tag-row a.tag{background:var(--bg-3);border:1px solid var(--line);color:var(--text-dim);padding:.35rem .7rem;border-radius:999px;font-family:'JetBrains Mono',monospace;font-size:.78rem;text-decoration:none;transition:all .15s}
.tag-row a.tag:hover{background:rgba(245,158,11,.08);border-color:var(--amber);color:var(--amber);text-decoration:none}

/* MOBILE NAV: collapse the 6 links into a horizontally scrollable strip */
@media (max-width: 880px){
  .nav{flex-wrap:wrap;gap:.6rem;padding:.7rem 1rem}
  .primary-nav{order:3;flex-basis:100%;margin-left:0;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:1rem;padding:.4rem 0;scrollbar-width:none}
  .primary-nav::-webkit-scrollbar{display:none}
  .primary-nav a{white-space:nowrap;font-size:.88rem;padding:.3rem 0;border-bottom-width:2px;flex-shrink:0}
  .nav-search{order:2;flex:1;min-width:0;margin-left:auto}
  .nav-search input{width:100%;min-width:0}
  .brand-name{font-size:1.05rem}
  .container{padding:0 1.1rem}
  h1{font-size:clamp(1.7rem,7vw,2.4rem)}
  .detail-grid{grid-template-columns:1fr!important;gap:1.6rem}
  .detail-side{position:static;flex-direction:column}
  .footer-grid{grid-template-columns:1fr 1fr!important;gap:1.6rem!important}
}

@media (max-width: 520px){
  .footer-grid{grid-template-columns:1fr!important}
  .grid.grid-2{grid-template-columns:1fr!important}
  pre{font-size:.78rem;padding:.85rem .9rem}
  .card-grid{grid-template-columns:1fr!important;gap:1rem}
  .detail-meta{flex-wrap:wrap;gap:.4rem}
}

/* HERO breathing room */
.hero{padding-top:3.6rem!important;padding-bottom:3.4rem!important}
@media (max-width: 880px){ .hero{padding-top:2.4rem!important;padding-bottom:2.4rem!important} }

/* Stats strip directly under hero */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:0 auto 3rem;max-width:var(--maxw)}
.stats-strip > div{background:var(--bg-2);padding:1.4rem 1.2rem;text-align:center}
.stats-strip .n{display:block;font-family:'Space Grotesk',sans-serif;font-weight:800;font-size:2rem;color:var(--amber);letter-spacing:-.02em;line-height:1.1}
.stats-strip .l{display:block;font-family:'JetBrains Mono',monospace;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-mute);margin-top:.35rem}
@media (max-width: 700px){ .stats-strip{grid-template-columns:repeat(2,1fr)} .stats-strip .n{font-size:1.5rem} }

/* Cross-link card on library detail */
.crosslink-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.55rem;margin:1rem 0 1.4rem}
.crosslink-grid a{display:block;background:var(--bg-2);border:1px solid var(--line);border-left:3px solid var(--amber);border-radius:var(--radius-sm);padding:.7rem .9rem;color:var(--text);font-size:.92rem;text-decoration:none;line-height:1.35;transition:all .15s}
.crosslink-grid a:hover{background:var(--bg-3);border-left-color:var(--amber-soft);color:#fff;text-decoration:none;transform:translateX(2px)}
.crosslink-grid a small{display:block;font-family:'JetBrains Mono',monospace;font-size:.7rem;color:var(--text-mute);margin-top:.2rem;text-transform:uppercase;letter-spacing:.06em}

/* ===== v6 RESPONSIVE + DESIGN POLISH ===== */

/* Global overflow safety + accessibility */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{overflow-x:hidden;text-rendering:optimizeLegibility}
img,svg,video{max-width:100%;height:auto;display:block}
.detail-main,.prose{min-width:0;overflow-wrap:break-word;word-wrap:break-word}
.feature-table,.cmp-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
.feature-table tbody,.cmp-table tbody,
.feature-table thead,.cmp-table thead{display:table;width:100%}

/* Skip link (WCAG) */
.skip-link{position:absolute;left:-9999px;top:0;background:var(--amber);color:#1a1206;padding:.7rem 1rem;font-weight:700;border-radius:0 0 8px 0;z-index:100}
.skip-link:focus{left:0}

/* Visible focus rings (keyboard nav) */
a:focus-visible,button:focus-visible,input:focus-visible,
.nav-toggle:focus-visible,.tag:focus-visible,.btn:focus-visible{
  outline:2px solid var(--amber);outline-offset:3px;border-radius:6px;text-decoration:none}

/* ===== HEADER (rebuilt) ===== */
.site-header .nav{display:flex;align-items:center;gap:1.4rem;padding:.95rem 1.4rem;flex-wrap:nowrap}
.nav-collapse{display:flex;align-items:center;gap:1.4rem;flex:1;min-width:0}

/* Hamburger: hidden on desktop, shown on tablet/mobile */
/* Visually-hidden checkbox for the no-JS hamburger toggle.
   Kept in normal flow + focusable so the aria-label is announced and the
   keyboard tab order works; never use display:none or aria-hidden here
   (would trip a11y rules: aria-hidden-focus, aria-input-field-name). */
.nav-toggle-input{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;opacity:0}
.nav-toggle-input:focus-visible+.nav-toggle{outline:2px solid var(--amber);outline-offset:3px;border-radius:6px}
.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}
.nav-toggle{display:none;width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;border-radius:8px;border:1px solid var(--line);background:var(--bg-2);transition:all .15s;flex-shrink:0;margin-left:auto}
.nav-toggle:hover{border-color:var(--amber);background:var(--bg-3)}
.nav-toggle-bar{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all .25s}

/* Primary nav */
.primary-nav{display:flex;gap:1.25rem;flex:1;min-width:0;flex-wrap:nowrap}
.primary-nav a{color:var(--text-dim);font-weight:500;font-size:.92rem;padding:.4rem 0;border-bottom:2px solid transparent;text-decoration:none;white-space:nowrap}
.primary-nav a:hover,.primary-nav a.active{color:#fff;border-bottom-color:var(--amber)}

/* Nav search */
.nav-search{flex-shrink:0}
.nav-search input{width:230px;max-width:100%;background:var(--bg-3);border:1px solid var(--line);color:var(--text);padding:.6rem 1rem;border-radius:999px;font-family:inherit;font-size:.88rem;transition:border-color .15s,background .15s}
.nav-search input:focus{outline:none;border-color:var(--amber);background:var(--bg-elev)}

/* TABLET (≤960px): show hamburger, collapse nav into dropdown panel */
@media(max-width:960px){
  .site-header .nav{padding:.75rem 1.1rem;gap:.8rem}
  .nav-toggle{display:flex}
  .nav-collapse{position:absolute;left:0;right:0;top:100%;background:rgba(11,18,32,.98);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;flex-direction:column;align-items:stretch;gap:0;padding:0 1.1rem;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease,border-color .3s ease;box-shadow:0 12px 32px rgba(0,0,0,0)}
  .nav-toggle-input:checked ~ .nav-collapse{max-height:520px;padding:.8rem 1.1rem 1.2rem;border-bottom-color:var(--line);box-shadow:0 12px 32px rgba(0,0,0,.5)}
  .nav-toggle-input:checked ~ .nav-toggle .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle-input:checked ~ .nav-toggle .nav-toggle-bar:nth-child(2){opacity:0}
  .nav-toggle-input:checked ~ .nav-toggle .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .primary-nav{flex-direction:column;gap:0;width:100%}
  .primary-nav a{padding:.85rem .25rem;border-bottom:1px solid var(--line);font-size:1rem;min-height:44px;display:flex;align-items:center}
  .primary-nav a:hover,.primary-nav a.active{border-bottom-color:var(--line);background:rgba(245,158,11,.06);padding-left:.6rem;color:var(--amber)}
  .nav-search{width:100%;margin-top:.7rem}
  .nav-search input{width:100%}
}

/* HERO refinements */
.hero h1{font-size:clamp(2rem,3.4vw,2.9rem);max-width:24ch}
.hero h1 .accent{white-space:nowrap}
@media(max-width:1100px){
  .hero h1 .accent{white-space:normal}
}
@media(max-width:960px){
  .hero{padding:2rem 0 2.6rem!important}
  .hero h1{max-width:none;font-size:clamp(1.9rem,5.4vw,2.6rem)}
  .hero p.lead{font-size:1.05rem}
  .hero-book{width:min(360px,90vw);height:auto;aspect-ratio:380/280}
}
@media(max-width:520px){
  .hero{padding:1.4rem 0 2rem!important}
  .hero h1{font-size:clamp(1.7rem,8vw,2.1rem);line-height:1.18}
  .hero p.lead{font-size:1rem;margin-bottom:1.2rem}
  .hero-stats{margin-top:1.4rem;padding-top:1.2rem}
  .hero-stat-num{font-size:1.45rem}
  .cta-row{flex-direction:column;align-items:stretch}
  .cta-row .btn{justify-content:center;width:100%}
  .hero-book{width:min(300px,86vw)}
  .hero-book-tag{font-size:.62rem;padding:.22rem .5rem;top:-16px}
}

/* DETAIL pages: prevent horizontal overflow on mobile */
.detail-main{min-width:0;max-width:100%}
.detail-meta{flex-wrap:wrap;gap:.4rem .55rem}
.detail-meta .badge{font-size:.7rem;white-space:normal;line-height:1.3}
@media(max-width:960px){
  .detail-grid{gap:1.8rem}
  .detail-tagline{font-size:1rem;line-height:1.55}
  .detail-section h2{font-size:1.25rem;line-height:1.25}
  .prose h2,.detail-main .prose h2{font-size:1.25rem!important;line-height:1.25;margin-top:2rem!important}
  .prose h3,.detail-main .prose h3{font-size:1.05rem!important}
  .feature-table th,.feature-table td,
  .cmp-table th,.cmp-table td{padding:.55rem .65rem;font-size:.84rem}
  .crosslink-grid{grid-template-columns:1fr;gap:.5rem}
}
@media(max-width:520px){
  .container{padding:0 1rem}
  .detail-section{margin-top:1.7rem}
  .detail-tagline{font-size:.96rem}
  .detail-section h2,.prose h2,.detail-main .prose h2{font-size:1.15rem!important}
  .side-card,.recommend-block{padding:1rem 1.05rem}
  .badge{font-size:.66rem;padding:.18rem .45rem}
  pre{font-size:.74rem;padding:.75rem .85rem;border-radius:8px}
  code{font-size:.86em;word-break:break-word}
}

/* CARD polish: subtle gradient + better hover */
.tool-card,.lib-card,.card{background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg-3) 140%);position:relative}
.tool-card::before,.lib-card::before,.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(180deg,rgba(245,158,11,.0),rgba(245,158,11,.0));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;transition:background .25s}
.tool-card:hover::before,.lib-card:hover::before,.card:hover::before{background:linear-gradient(180deg,rgba(245,158,11,.5),rgba(245,158,11,.05))}
.tool-card:hover,.lib-card:hover,.card:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(0,0,0,.45),0 0 0 1px rgba(245,158,11,.15)}

/* SECTION-HEAD layout safety */
.section-head{align-items:flex-end;flex-wrap:wrap;row-gap:.5rem}
@media(max-width:640px){
  .section{padding:2rem 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:.4rem}
  .section-head h2{font-size:1.4rem;line-height:1.2}
}

/* FOOTER polish */
@media(max-width:980px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.8rem;padding:0 1.1rem}
}
@media(max-width:560px){
  .site-footer{padding:2.2rem 0 1.6rem;margin-top:2.6rem}
  .footer-grid{grid-template-columns:1fr;gap:1.5rem}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:.5rem;padding:0 1rem}
  .footer-col h2,.footer-col h3,.footer-col h4,.footer-col .footer-col-h{font-size:.78rem;margin-bottom:.6rem}
}

/* TAG/CHIP rows wrap cleanly */
.tag-row{row-gap:.5rem}
@media(max-width:520px){
  .tag-row a.tag,.tag{font-size:.72rem;padding:.28rem .55rem}
}

/* PAGINATION: tighter on mobile */
@media(max-width:520px){
  .pagination{gap:.3rem;margin:1.8rem 0}
  .pagination a,.pagination span{padding:.45rem .65rem;font-size:.78rem}
}

/* STATS-STRIP → 4→2 col already, refine 4→2→1 */
@media(max-width:420px){
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .stats-strip .n{font-size:1.35rem}
  .stats-strip > div{padding:1rem .8rem}
}

/* HERO-BOOK illustration: scale text & lines proportionally on smaller screens */
@media(max-width:520px){
  .hero-page-inner{padding:14px 12px;font-size:.55rem}
  .hp-title{font-size:.7rem;margin-bottom:5px}
  .hero-book-pulse{font-size:.62rem;bottom:-26px}
}

/* KICKER: wrap nicely */
.kicker{white-space:normal;word-break:keep-all;line-height:1.4;max-width:100%}
@media(max-width:520px){
  .kicker{font-size:.7rem;padding:.3rem .55rem}
}

/* SEARCH form on /search page */
@media(max-width:520px){
  .search-form{flex-direction:column}
  .search-form input{width:100%;font-size:.95rem}
  .search-form .btn{width:100%;justify-content:center}
}

/* Reduce-motion respect */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}