/* ==========================================================================
   AIBooks — editorial theme stylesheet
   Design tokens → base → layout → components → responsive
   ========================================================================== */

:root {
  /* Palette — ivory paper, ink, terracotta signal, sage support */
  --paper:        #F7F4ED;   /* warm ivory background */
  --paper-2:      #FBF9F3;   /* raised surface */
  --card:         #FFFFFF;   /* cards */
  --ink:          #1C1B19;   /* near-black text */
  --ink-soft:     #4A473F;   /* secondary text */
  --ink-faint:    #8A857A;   /* muted / meta */
  --line:         #E4DFD3;   /* hairlines / borders */
  --line-strong:  #D2CBB9;
  --accent:       #C0512B;   /* terracotta — the single signal color */
  --accent-deep:  #9C3E1F;
  --accent-wash:  #F3E4DA;   /* accent tint bg */
  --sage:         #4E6151;   /* rare secondary accent */
  --focus:        #C0512B;

  /* Type */
  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Rhythm */
  --wrap: 1180px;
  --measure: 720px;      /* article reading width */
  --gap: clamp(1rem, 2vw, 1.75rem);
  --radius: 4px;
  --radius-lg: 8px;
  --shadow: 0 1px 2px rgba(28,27,25,.04), 0 8px 30px rgba(28,27,25,.06);
  --shadow-lift: 0 4px 12px rgba(28,27,25,.08), 0 18px 50px rgba(28,27,25,.10);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:#16150F; --paper-2:#1C1B15; --card:#201E17; --ink:#F3EFE4;
    --ink-soft:#C6C0B1; --ink-faint:#8C8676; --line:#332F25; --line-strong:#413C2E;
    --accent:#E1774F; --accent-deep:#C0512B; --accent-wash:#2A211A; --sage:#8FA890;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 30px rgba(0,0,0,.4);
    --shadow-lift:0 4px 12px rgba(0,0,0,.4),0 18px 50px rgba(0,0,0,.5);
  }
}
:root[data-theme="dark"] {
  --paper:#16150F; --paper-2:#1C1B15; --card:#201E17; --ink:#F3EFE4;
  --ink-soft:#C6C0B1; --ink-faint:#8C8676; --line:#332F25; --line-strong:#413C2E;
  --accent:#E1774F; --accent-deep:#C0512B; --accent-wash:#2A211A; --sage:#8FA890;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 30px rgba(0,0,0,.4);
  --shadow-lift:0 4px 12px rgba(0,0,0,.4),0 18px 50px rgba(0,0,0,.5);
}

/* ---------- reset / base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:1.0625rem;line-height:1.7;
  font-optical-sizing:auto;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--accent-deep);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.12;letter-spacing:-.01em;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.55rem)}
p{margin:0 0 1.2em}
:focus-visible{outline:2.5px solid var(--focus);outline-offset:2px;border-radius:2px}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(1rem,4vw,2rem)}
.skip-link{position:absolute;left:-999px}
.skip-link:focus{left:1rem;top:1rem;z-index:999;background:var(--ink);color:var(--paper);padding:.6rem 1rem;border-radius:var(--radius)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 82%,transparent);
  backdrop-filter:saturate(150%) blur(12px);border-bottom:1px solid transparent;
  box-shadow:inset 0 -1px 0 var(--line);transition:box-shadow .3s ease,background .3s ease}
.site-header::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent) 0%,var(--accent-deep) 40%,transparent 90%);opacity:.9}
.site-header.scrolled{background:color-mix(in srgb,var(--paper) 94%,transparent);
  box-shadow:0 1px 0 var(--line),0 8px 24px rgba(28,27,25,.07)}
.header-inner{display:flex;align-items:center;gap:1.5rem;min-height:76px;transition:min-height .3s ease}
.site-header.scrolled .header-inner{min-height:62px}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--display);font-weight:600;font-size:1.45rem;letter-spacing:-.02em;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{flex:0 0 auto;width:34px;height:34px;display:block;filter:drop-shadow(0 2px 5px rgba(192,81,43,.28));transition:transform .3s ease}
.brand-mark svg{width:100%;height:100%;display:block}
.brand:hover .brand-mark{transform:rotate(-6deg) scale(1.05)}
.brand-word{display:inline-flex;align-items:baseline}
.site-header.scrolled .brand{font-size:1.32rem}
.brand .dot{color:var(--accent)}
.brand small{font-family:var(--sans);font-weight:600;font-size:.56rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);align-self:center;border:1px solid var(--line-strong);padding:.18rem .5rem;border-radius:100px;white-space:nowrap}
.primary-nav{margin-left:auto}
.primary-nav ul{list-style:none;display:flex;gap:clamp(1rem,1.8vw,1.6rem);margin:0;padding:0}
.primary-nav a{color:var(--ink-soft);font-weight:500;font-size:.95rem;padding:.45rem .7rem;position:relative;white-space:nowrap;border-radius:100px;transition:color .2s ease,background .2s ease}
.primary-nav > ul > li > a:hover{color:var(--accent-deep);background:var(--accent-wash);text-decoration:none}
.primary-nav .current-menu-item a,.primary-nav .current-cat a{color:var(--ink)}
.primary-nav > ul > li > a{display:inline-flex;align-items:center;gap:.34em}
.primary-nav > ul > li > a > .u-underline{display:none}
.primary-nav > ul > li{position:relative}
.primary-nav .current-menu-item > a,.primary-nav .current-menu-parent > a{color:var(--accent-deep);background:var(--accent-wash)}

/* dropdown submenu */
.primary-nav .menu-item-has-children{position:relative}
.primary-nav .menu-item-has-children > a .caret{width:.5em;height:.5em;margin-top:-.18em;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);opacity:.55;transition:transform .2s ease}
.primary-nav .menu-item-has-children:hover > a .caret{transform:rotate(45deg) translate(1px,1px);opacity:.9}
.primary-nav .sub-menu{list-style:none;margin:0;padding:.4rem;position:absolute;top:calc(100% + 8px);left:0;min-width:240px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lift);
  display:flex;flex-direction:column;gap:.1rem;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .18s ease,transform .18s ease,visibility .18s;z-index:60}
.primary-nav .sub-menu::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.primary-nav .menu-item-has-children:hover > .sub-menu,
.primary-nav .menu-item-has-children:focus-within > .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.primary-nav .sub-menu li{padding:0}
.primary-nav .sub-menu a{display:block;padding:.6rem .8rem;border-radius:var(--radius);font-size:.92rem;white-space:nowrap;color:var(--ink-soft)}
.primary-nav .sub-menu a::after{display:none}
.primary-nav .sub-menu a:hover{background:var(--accent-wash);color:var(--accent-deep)}
.header-actions{display:flex;align-items:center;gap:.5rem}
.icon-btn{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line-strong);background:var(--card);border-radius:50%;color:var(--ink-soft);cursor:pointer;transition:color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.icon-btn:hover{color:var(--accent-deep);border-color:var(--accent);transform:translateY(-1px);box-shadow:0 4px 12px rgba(28,27,25,.08)}
.nav-toggle{display:none}
/* animated burger */
.burger{position:relative;width:20px;height:14px}
.burger span{position:absolute;left:0;width:100%;height:2px;border-radius:2px;background:currentColor;transition:transform .3s ease,opacity .2s ease,top .3s ease}
.burger span:nth-child(1){top:0}
.burger span:nth-child(2){top:6px}
.burger span:nth-child(3){top:12px}
.nav-toggle[aria-expanded="true"] .burger span:nth-child(1){top:6px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .burger span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .burger span:nth-child(3){top:6px;transform:rotate(-45deg)}

/* header search overlay */
.search-panel{display:none;border-bottom:1px solid var(--line);background:var(--paper-2)}
.search-panel.open{display:block}
.search-panel .wrap{padding-block:1rem}
.search-form{display:flex;gap:.5rem}
.search-form input[type=search]{flex:1;font:inherit;padding:.8rem 1rem;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--card);color:var(--ink)}
.search-form button{padding:.8rem 1.4rem;border:none;background:var(--ink);color:var(--paper);border-radius:var(--radius);font-weight:600;cursor:pointer}
.search-form button:hover{background:var(--accent-deep)}

/* ---------- buttons / chips ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-weight:600;font-size:.95rem;padding:.7rem 1.3rem;border-radius:var(--radius);background:var(--ink);color:var(--paper);border:1px solid var(--ink)}
.btn:hover{background:var(--accent-deep);border-color:var(--accent-deep);text-decoration:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--card);color:var(--ink);border-color:var(--ink-faint)}
.eyebrow{font-family:var(--sans);font-weight:600;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-deep)}
.cat-chip{display:inline-block;font-weight:600;font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;color:var(--accent-deep);background:var(--accent-wash);padding:.28rem .6rem;border-radius:100px}
.cat-chip:hover{text-decoration:none;color:#fff;background:var(--accent-deep)}

/* ---------- hero / front ---------- */
.hero{padding:clamp(2.5rem,6vw,5rem) 0 clamp(1.5rem,4vw,3rem);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:end}
.hero h1{margin:.4rem 0 .6rem}
.hero .lede{font-size:1.2rem;color:var(--ink-soft);max-width:38ch;margin-bottom:1.4rem}
.hero-feature{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:var(--card)}
.hero-feature img{aspect-ratio:16/11;object-fit:cover;width:100%}
.hero-feature .meta{padding:1.1rem 1.2rem}
.hero-feature h3{margin:.5rem 0 .3rem}

/* hero featured card — layered depth, editorial */
.hero-feature-wrap{position:relative;padding:14px 14px 0;isolation:isolate}
.hff-layer{position:absolute;inset:0 0 auto 0;height:100%;border-radius:var(--radius-lg);background:var(--card);border:1px solid var(--line);z-index:-1}
.hff-layer-1{transform:translate(10px,10px) rotate(1.4deg);opacity:.6}
.hff-layer-2{transform:translate(20px,20px) rotate(2.8deg);opacity:.32}
.hero-feature-card{position:relative;display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:1.9rem 1.8rem 1.6rem;box-shadow:var(--shadow-lift);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease}
.hero-feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--accent),var(--accent-deep))}
.hero-feature-card:hover{transform:translateY(-4px);text-decoration:none;box-shadow:0 10px 24px rgba(28,27,25,.12),0 26px 60px rgba(28,27,25,.14)}
.hff-num{position:absolute;top:.4rem;right:1rem;font-family:var(--display);font-weight:600;font-size:6rem;line-height:1;color:var(--accent);opacity:.08;pointer-events:none}
.hff-head{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;margin-bottom:1rem}
.hff-pick{display:inline-flex;align-items:center;gap:.45rem;font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.hff-pick .pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:ha-pulse 2.4s ease-out infinite}
.hero-feature-card h3{font-size:clamp(1.5rem,2.4vw,1.95rem);line-height:1.15;margin:0 0 .6rem;color:var(--ink)}
.hero-feature-card:hover h3{color:var(--accent-deep)}
.hff-dek{color:var(--ink-soft);font-size:1rem;margin:0 0 1.4rem}
.hff-foot{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:1rem;border-top:1px solid var(--line)}
.hff-meta{color:var(--ink-faint);font-size:.85rem}
.hff-cta{display:inline-flex;align-items:center;gap:.4rem;font-weight:600;color:var(--accent-deep);font-size:.92rem}
.hero-feature-card:hover .hff-cta svg{transform:translateX(3px)}
.hff-cta svg{transition:transform .2s ease}
@keyframes ha-pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 55%,transparent)}70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}

/* ---------- article grid ---------- */
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin:clamp(2rem,5vw,3.5rem) 0 1.4rem;padding-bottom:.8rem;border-bottom:2px solid var(--ink)}
.section-head h2{margin:0}
.section-head a{font-weight:600;font-size:.92rem;white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.2rem,3vw,2rem)}
.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--line-strong)}
.card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:1.1rem 1.2rem 1.3rem;display:flex;flex-direction:column;gap:.55rem;flex:1}
.card h3{font-size:1.2rem;margin:0}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--accent-deep);text-decoration:none}
.card .dek{color:var(--ink-soft);font-size:.96rem;margin:0}
.card .foot{margin-top:auto;display:flex;align-items:center;gap:.6rem;color:var(--ink-faint);font-size:.82rem}
.dot-sep::before{content:"·";margin:0 .1rem}

/* ---------- layout: content + sidebar ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(1.5rem,4vw,3rem);padding-block:clamp(2rem,5vw,3.5rem)}
.sidebar{align-self:start;position:sticky;top:90px;display:flex;flex-direction:column;gap:1.5rem}
.widget{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.2rem 1.3rem}
.widget h4{font-family:var(--sans);font-weight:700;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .9rem;padding-bottom:.6rem;border-bottom:1px solid var(--line)}
.widget ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.7rem}
.widget li a{color:var(--ink-soft);font-weight:500}
.widget li a:hover{color:var(--accent-deep);text-decoration:none}
.tag-cloud{display:flex;flex-wrap:wrap;gap:.5rem}

/* ---------- single article ---------- */
.article-head{padding:clamp(2rem,5vw,3.5rem) 0 1.5rem;border-bottom:1px solid var(--line)}
.article-head .wrap{max-width:var(--measure)}
.article-head h1{margin:.6rem 0 .8rem}
.article-head .dek{font-size:1.25rem;color:var(--ink-soft);line-height:1.5}
.byline{display:flex;align-items:center;gap:.7rem;margin-top:1.3rem;color:var(--ink-faint);font-size:.9rem}
.byline .avatar{width:38px;height:38px;border-radius:50%;background:var(--accent-wash);display:grid;place-items:center;color:var(--accent-deep);font-weight:700;font-family:var(--display)}
.byline strong{color:var(--ink);font-weight:600}
.feature-media{margin:clamp(1.5rem,4vw,2.5rem) auto 0;max-width:var(--wrap)}
.feature-media img{width:100%;border-radius:var(--radius-lg);border:1px solid var(--line)}
.feature-media figcaption{color:var(--ink-faint);font-size:.85rem;padding-top:.6rem;text-align:center}

.article-body{max-width:var(--measure);margin-inline:auto;font-size:1.15rem;line-height:1.8}
.article-body h2{margin-top:2em}
.article-body h3{margin-top:1.6em}
.article-body img{border-radius:var(--radius);margin:1.5em 0}
.article-body ul,.article-body ol{padding-left:1.3em;margin:0 0 1.3em}
.article-body li{margin-bottom:.5em}
.article-body blockquote{margin:1.6em 0;padding:.4em 0 .4em 1.4em;border-left:3px solid var(--accent);font-family:var(--display);font-size:1.3rem;font-style:italic;color:var(--ink-soft)}
.article-body pre{background:#1e1c17;color:#f3efe4;padding:1.1rem 1.2rem;border-radius:var(--radius);overflow:auto;font-size:.92rem;line-height:1.6}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--accent-wash);padding:.12em .4em;border-radius:3px}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-strong)}
.article-body a:hover{text-decoration-color:var(--accent)}
.article-body figure{margin:1.5em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.98rem}
@media (max-width:720px){
  /* Wide comparison tables scroll inside themselves instead of widening the page. */
  .article-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;font-size:.9rem}
  .article-body th,.article-body td{min-width:8rem}
}
.article-body{overflow-wrap:break-word}
.article-body th,.article-body td{border:1px solid var(--line);padding:.7rem .9rem;text-align:left}
.article-body th{background:var(--paper-2);font-weight:700}

.article-foot{max-width:var(--measure);margin:2.5rem auto 0;padding-top:1.5rem;border-top:1px solid var(--line)}
.tags-row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.tag-pill{font-size:.85rem;color:var(--ink-soft);background:var(--paper-2);border:1px solid var(--line);padding:.3rem .7rem;border-radius:100px}
.tag-pill:hover{border-color:var(--accent);color:var(--accent-deep);text-decoration:none}
.toc{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.1rem 1.3rem;margin:0 0 2rem}
.toc strong{font-family:var(--sans);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint)}
.toc ol{margin:.6rem 0 0;padding-left:1.2rem}
.toc a{color:var(--ink-soft)}

/* ---------- page header (archive/search) ---------- */
.page-hero{padding:clamp(2rem,5vw,3.5rem) 0;border-bottom:1px solid var(--line);background:var(--paper-2)}
.page-hero .lede{color:var(--ink-soft);font-size:1.15rem;max-width:60ch;margin:.6rem 0 0}

/* ---------- pagination ---------- */
.pagination{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;margin:2.5rem 0}
.pagination a,.pagination span{padding:.55rem .95rem;border:1px solid var(--line-strong);border-radius:var(--radius);color:var(--ink-soft);font-weight:600}
.pagination .current{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.pagination a:hover{border-color:var(--accent);color:var(--accent-deep);text-decoration:none}

/* ---------- footer ---------- */
.site-footer{margin-top:clamp(3rem,6vw,5rem);background:#1b1a15;color:#d8d3c6}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:2rem;padding:clamp(2.5rem,5vw,4rem) 0 2.5rem}
.site-footer .brand{color:#fff}
.site-footer p{color:#b3ae9f;font-size:.95rem}
.site-footer h5{font-family:var(--sans);font-weight:700;font-size:.75rem;letter-spacing:.13em;text-transform:uppercase;color:#8c8674;margin:0 0 1rem}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.site-footer a{color:#d8d3c6}
.site-footer a:hover{color:#fff}
.footer-sub{display:flex;gap:.5rem;margin-top:.8rem}
.footer-sub input{flex:1;padding:.65rem .8rem;border:1px solid #3a362a;background:#201e17;color:#f3efe4;border-radius:var(--radius);font:inherit}
.footer-sub button{padding:.65rem 1rem;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);font-weight:600;cursor:pointer}
.footer-bar{border-top:1px solid #322e23;padding:1.3rem 0;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;align-items:center;color:#8c8674;font-size:.85rem}
.legal-links{display:flex;flex-wrap:wrap;gap:.3rem .1rem;align-items:center}
.legal-links a{color:#a8a294;padding:0 .7rem;position:relative}
.legal-links a:not(:first-child)::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:#3a362a}
.legal-links a:hover{color:#fff}
.site-credit{color:#a8a294}
.site-credit a{color:var(--accent);font-weight:600}
.site-credit a:hover{color:#fff}
.site-credit-fallback{text-align:center;padding:12px;font-size:.82rem;color:#8c8674;background:#1b1a15;border-top:1px solid #322e23}
.site-credit-fallback a{color:var(--accent);font-weight:600}

/* ---------- misc ---------- */
.ad-slot{margin:2rem auto;max-width:var(--measure);min-height:90px;display:grid;place-items:center;background:var(--paper-2);border:1px dashed var(--line-strong);border-radius:var(--radius);color:var(--ink-faint);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase}
.notice{background:var(--accent-wash);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.5rem;text-align:center}

/* ---------- single: full-width editorial + sidebar ---------- */
.single .article-head{padding:clamp(2rem,5vw,3.5rem) 0 1.6rem}
.article-head-inner{max-width:1240px;margin-inline:auto;padding-inline:clamp(1.15rem,4vw,2.5rem)}
.single .feature-media{max-width:1240px;margin:clamp(1.4rem,3.5vw,2.4rem) auto 0;padding-inline:clamp(1.15rem,4vw,2.5rem)}

.single-layout{max-width:1240px;margin:clamp(1.8rem,4vw,3rem) auto 0;padding-inline:clamp(1.15rem,4vw,2.5rem);
  display:flex;gap:clamp(2rem,4vw,3.5rem);align-items:flex-start}
.single-main{flex:1 1 auto;min-width:0}
.single-main .article-body{max-width:820px;margin:0}     /* wide, left-aligned reading column */
.single-main .article-body > *{max-width:100%}
.single-main .article-foot{max-width:820px;margin-left:0;margin-right:0}
.article-sidebar{flex:0 0 320px;position:sticky;top:90px;display:flex;flex-direction:column;gap:1.4rem}
.article-sidebar .widget{margin:0}

.popular-list{list-style:none;margin:0;padding:0;counter-reset:pop}
.popular-list li{display:flex;gap:.8rem;align-items:flex-start;padding:.7rem 0;border-bottom:1px solid var(--line)}
.popular-list li:last-child{border-bottom:none;padding-bottom:0}
.popular-list .rank{font-family:var(--display);font-weight:600;font-size:1.35rem;line-height:1;color:var(--accent);min-width:1.2em}
.popular-list a{display:flex;flex-direction:column;gap:.15rem}
.popular-list a:hover{text-decoration:none}
.popular-list .p-title{color:var(--ink);font-weight:600;font-size:.98rem;line-height:1.35}
.popular-list a:hover .p-title{color:var(--accent-deep)}
.popular-list .p-meta{color:var(--ink-faint);font-size:.8rem}

.cta-widget{background:var(--accent-wash);border-color:transparent}
.side-sub{display:flex;flex-direction:column;gap:.5rem}
.side-sub input{padding:.7rem .8rem;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--card);color:var(--ink);font:inherit}
.side-sub .btn{justify-content:center}

.share-row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-top:1rem}
.related-block{margin-top:clamp(2rem,5vw,3.5rem)}

@media (max-width:1024px){
  .single-layout{flex-direction:column;align-items:stretch}
  .single-main{width:100%}
  .single-main .article-body,.single-main .article-foot{max-width:none}
  .article-sidebar{flex:1 1 auto;width:100%;position:static;flex-direction:row;flex-wrap:wrap;margin-top:1rem}
  .article-sidebar .widget{flex:1 1 280px}
}

/* ---------- contact form ---------- */
.contact-form{margin-top:1.5rem;display:flex;flex-direction:column;gap:1rem}
.contact-form label{display:flex;flex-direction:column;gap:.4rem;font-weight:600;font-size:.9rem;color:var(--ink-soft)}
.contact-form .cf-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.contact-form input,.contact-form textarea{font:inherit;font-weight:400;padding:.8rem .9rem;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--card);color:var(--ink);width:100%}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}
.contact-form .btn{align-self:flex-start}
.cf-note{font-size:.85rem;color:var(--ink-faint);margin:0}
.contact-list li{margin-bottom:.8rem;font-size:.92rem;color:var(--ink-soft)}
@media (max-width:520px){.contact-form .cf-row{grid-template-columns:1fr}}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar .widget{flex:1 1 260px}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:1rem}
  .header-inner{gap:.5rem;min-height:62px}
  .brand{font-size:1.3rem}
  .brand small{display:none}
  .header-actions{gap:.35rem;margin-left:auto}
  .icon-btn{width:42px;height:42px}
  .primary-nav{position:fixed;inset:62px 0 auto 0;background:var(--paper);border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:transform .3s ease;margin:0;box-shadow:var(--shadow)}
  .primary-nav.open{transform:translateY(0)}
  .primary-nav ul{flex-direction:column;gap:0;padding:.5rem 0}
  .primary-nav li{padding:0 clamp(1rem,4vw,2rem)}
  .primary-nav a{display:block;padding:.9rem 0;border-bottom:1px solid var(--line)}
  .primary-nav .sub-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;
    background:var(--paper-2);border-radius:0;padding:0;margin:0}
  .primary-nav .sub-menu a{padding:.75rem 0 .75rem 1rem;border-bottom:1px solid var(--line);white-space:normal}
  .primary-nav .menu-item-has-children > a{justify-content:space-between}
  .primary-nav .menu-item-has-children > a .caret{margin-top:0}
  .nav-toggle{display:grid}
  .grid,.grid.cols-2{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:2rem;padding-left:clamp(1.15rem,5vw,2rem);padding-right:clamp(1.15rem,5vw,2rem)}
  .footer-bar{padding-left:clamp(1.15rem,5vw,2rem);padding-right:clamp(1.15rem,5vw,2rem);flex-direction:column;gap:.4rem}
  .footer-sub{flex-wrap:wrap}
  .footer-sub input{flex:1 1 100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:.3rem}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}

/* Safety net: decorative offsets (hero card stack) must never create sideways scroll. */
html,body{overflow-x:clip}