/* =========================================================
   Przetargi.veritop.pl - design system
   Navy + burgundy + brass. Spectral / Figtree.
   ========================================================= */

:root{
  --navy:#0f1b2d;
  --navy-2:#16263c;
  --ink:#182233;
  --ink-soft:#33415a;
  --muted:#5a6577;
  --paper:#f4f4f0;
  --surface:#ffffff;
  --surface-2:#eeeee8;
  --line:#dbdbd2;
  --line-strong:#c2c3b8;

  --wine:#7c2638;
  --wine-dark:#5d1a29;
  --wine-soft:#f4e7ea;
  --brass:#b08a4a;
  --brass-light:#d9b77c;
  --brass-soft:#f3ecdd;

  --box-bg:#eef0f3;
  --box-warn:#f7e9eb;
  --box-tip:#f1efe6;

  --f-display:'Spectral',Georgia,'Times New Roman',serif;
  --f-body:'Figtree',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --f-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --header-h:72px;
  --sidebar-w:290px;
  --ease-out:cubic-bezier(.23,1,.32,1);
  --radius:3px;
  --shadow-pop:0 18px 44px rgba(15,27,45,.16);
}

@media (prefers-color-scheme:dark){
  :root{
    --navy:#0a1320;
    --navy-2:#101d2e;
    --ink:#e9edf3;
    --ink-soft:#cdd6e2;
    --muted:#a7b3c3;
    --paper:#0c1420;
    --surface:#111d2c;
    --surface-2:#18273a;
    --line:#25354b;
    --line-strong:#354865;

    --wine:#e2a3b0;
    --wine-dark:#f0c0c9;
    --wine-soft:#2b1620;
    --brass:#c9a063;
    --brass-light:#e2c48f;
    --brass-soft:#2a2317;

    --box-bg:#142234;
    --box-warn:#2a1720;
    --box-tip:#1d2419;

    --shadow-pop:0 18px 44px rgba(0,0,0,.5);
  }
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.nav-open{overflow:hidden}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:17.5px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(60% 45% at 100% 0%,rgba(176,138,74,.06),transparent 70%),
    radial-gradient(50% 40% at 0% 100%,rgba(15,27,45,.05),transparent 70%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--wine);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--wine-dark)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.16;letter-spacing:-.022em;text-wrap:balance;margin:0}
p{margin:0 0 1.15em}
::selection{background:var(--brass-light);color:#101a2b}
:focus-visible{outline:2px solid var(--wine);outline-offset:3px}

.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}
.skip-link{position:absolute;left:16px;top:-60px;z-index:200;background:var(--navy);color:#fff;padding:10px 16px;border-radius:2px;text-decoration:none}
.skip-link:focus{top:12px}

/* ---------- header ---------- */
.app-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.app-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--brass),transparent);
  opacity:.55;
}
.header-inner{
  height:100%;display:flex;align-items:center;gap:22px;
  padding:0 26px 0 22px;
}
.menu-btn{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line-strong);background:transparent;
  border-radius:2px;cursor:pointer;color:var(--ink);flex:0 0 auto;
}
.menu-btn:hover{background:var(--surface-2)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--navy);color:var(--brass-light);
  font-family:var(--f-display);font-weight:600;font-size:1.3rem;line-height:1;
  border-radius:2px;
}
.brand-mark--sm{width:30px;height:30px;font-size:1.05rem}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--f-display);font-weight:600;font-size:1.3rem;letter-spacing:-.02em}
.brand-tag{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:4px}

.search{position:relative;margin-left:auto;width:min(420px,42vw)}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.search input{
  width:100%;height:44px;padding:0 14px 0 40px;
  font-family:var(--f-body);font-size:.92rem;color:var(--ink);
  background:var(--surface);border:1px solid var(--line-strong);border-radius:2px;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.search input::placeholder{color:var(--ink-soft);opacity:.85}
.search input:focus{outline:none;border-color:var(--wine);box-shadow:0 0 0 3px rgba(124,38,56,.12)}
.search-results{
  position:absolute;right:0;top:calc(100% + 9px);width:min(460px,86vw);
  background:var(--surface);border:1px solid var(--line-strong);border-radius:2px;
  box-shadow:var(--shadow-pop);max-height:min(62vh,520px);overflow:auto;z-index:120;
}
.search-results a{
  display:block;padding:12px 16px;text-decoration:none;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.search-results a:last-child{border-bottom:0}
.search-results a:hover,.search-results a.is-active{background:var(--surface-2);color:var(--ink)}
.sr-title{display:block;font-weight:600;font-size:.95rem;line-height:1.35}
.sr-section{display:block;font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-top:4px}
.sr-empty{padding:16px;color:var(--muted);font-size:.9rem}

/* ---------- shell / sidebar ---------- */
.shell{position:relative;z-index:1}
.sidebar{
  position:fixed;top:var(--header-h);left:0;bottom:0;width:var(--sidebar-w);
  background:#fafaf6;
  border-right:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
  padding:22px 0 26px;z-index:95;
}
@media (prefers-color-scheme:dark){.sidebar{background:#0e1826}}
.sidebar-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px 12px;font-size:.68rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted)
}
.sidebar-close{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:2px;font-size:1.4rem;line-height:1;cursor:pointer;color:var(--ink-soft);padding:0;margin:-8px -4px 0 0}
.sidebar-nav{padding:0 12px}
.side-group{margin-bottom:6px}
.side-group + .side-group{border-top:1px solid var(--line);margin-top:10px;padding-top:2px}
  .side-section{
  display:flex;align-items:baseline;gap:8px;
  padding:16px 12px 6px;font-size:.72rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--muted);font-weight:600;
}
.side-section span{color:var(--brass);font-family:var(--f-mono);font-size:.64rem;letter-spacing:0}
.sidebar-link{
  display:block;padding:6px 12px;font-size:.94rem;line-height:1.4;
  color:var(--ink-soft);text-decoration:none;border-radius:2px;
  transition:color .15s ease,background .15s ease;
}
.sidebar-link:hover{color:var(--wine);background:var(--surface-2)}
.sidebar-link.is-active{color:var(--wine);font-weight:600;background:var(--surface-2);position:relative}
.sidebar-link.is-active::before{
  content:"";position:absolute;left:3px;top:50%;width:5px;height:5px;
  transform:translateY(-50%) rotate(45deg);background:var(--brass);
}
.sidebar-foot{margin:26px 24px 0;padding-top:18px;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted);line-height:1.55}
.sidebar-foot p{margin:0 0 8px}
.sidebar-foot a{color:var(--ink-soft)}
.overlay{
  position:fixed;inset:var(--header-h) 0 0 0;background:rgba(10,19,32,.5);
  z-index:90;backdrop-filter:blur(1.5px);
}

.main{
  margin-left:var(--sidebar-w);
  padding-top:var(--header-h);
  min-height:100vh;
  outline:none;
}

/* ---------- motion ---------- */
@keyframes rise{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:none}}
@keyframes heroIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.view{animation:rise .3s var(--ease-out) both}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  min-height:clamp(560px,76vh,720px);
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(390px,.94fr);
  background:var(--navy);
  border-bottom:1px solid var(--line-strong);
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(130% 100% at 0% 0%,#182941 0%,#0f1b2d 52%,#0a1422 100%);
}
.hero-copy{
  display:flex;flex-direction:column;justify-content:center;
  max-width:760px;padding:clamp(52px,7vw,88px) clamp(26px,4.2vw,64px);
}
.hero-kicker{
  display:flex;align-items:center;gap:12px;margin:0 0 22px;
  font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brass-light);font-weight:600;
}
.hero-kicker::before{content:"";width:22px;height:1px;background:var(--brass);display:block}
.hero-title{
  margin:0;color:#f8f6f0;
  font-size:clamp(3rem,6.6vw,5.4rem);
  font-weight:500;line-height:.94;letter-spacing:-.035em;
}
.hero-lede{
  margin:24px 0 0;max-width:42ch;color:#dfe4ec;
  font-size:clamp(1.02rem,1.3vw,1.18rem);line-height:1.6;
}
.hero-cta{
  display:inline-flex;align-items:center;gap:12px;margin-top:32px;
  min-height:50px;padding:0 24px;align-self:flex-start;
  background:#f2efe6;color:#101a2b;
  font-weight:600;font-size:.96rem;letter-spacing:.01em;text-decoration:none;
  border:1px solid #f2efe6;border-radius:2px;
  transition:background .18s ease,transform .18s var(--ease-out);
}
.hero-cta svg{transition:transform .18s var(--ease-out)}
.hero-cta:hover{background:#fffdf7;border-color:#fffdf7;color:#101a2b}
.hero-cta:hover svg{transform:translateX(4px)}
.hero-cta:active{transform:scale(.985)}

/* specimen tender notice - the hero's visual anchor */
.hero-doc{
  position:relative;display:flex;align-items:center;justify-content:center;
  padding:clamp(28px,3.2vw,52px);
  background:#efece3;color:#1c2536;
  border-left:1px solid rgba(255,255,255,.14);
  animation:heroIn .7s .08s var(--ease-out) both;
}
.hero-doc::before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--wine)}
.doc-sheet{width:100%;max-width:430px}
.doc-top{
  display:flex;justify-content:space-between;gap:14px;
  padding-bottom:13px;border-bottom:1px solid #cfc8b8;
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.09em;
  text-transform:uppercase;color:#5f5749;
}
.doc-title{
  font-family:var(--f-display);font-size:1.46rem;line-height:1.16;
  letter-spacing:-.015em;margin:18px 0 5px;color:#16213a;
}
.doc-sub{margin:0 0 16px;font-size:.8rem;color:#5f5749}
.doc-rows{margin:0;padding:0}
.doc-row{display:grid;grid-template-columns:100px 1fr;gap:12px;padding:8px 0;border-top:1px solid #d9d2c3}
.doc-row dt{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:#5f5749;padding-top:2px}
.doc-row dd{margin:0;font-size:.88rem;line-height:1.4;color:#1c2536}
.doc-deadline{
  margin-top:16px;padding:11px 13px;background:#16213a;color:#f4f1e8;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.doc-deadline span{font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:#d9b77c}
.doc-deadline strong{font-size:.96rem;font-weight:600;white-space:nowrap;font-variant-numeric:tabular-nums}
.doc-foot{
  margin-top:13px;padding-top:10px;border-top:1px solid #d9d2c3;
  display:flex;justify-content:space-between;gap:10px;
  font-size:.72rem;letter-spacing:.01em;color:#5f5749;
}

/* ---------- home ---------- */
.home-intro{
  max-width:1120px;padding:34px clamp(24px,4.4vw,64px) 4px;
  display:flex;gap:32px;align-items:baseline;justify-content:space-between;flex-wrap:wrap;
}
.home-intro p{max-width:66ch;margin:0;color:var(--ink-soft);font-size:.98rem}
.home-intro .intro-note{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);white-space:nowrap}

.toc{max-width:1180px;padding:38px clamp(24px,4.4vw,64px) 72px}
.toc-section{margin-bottom:46px}
.toc-head{
  display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;
  padding-top:14px;border-top:2px solid var(--navy);
}
@media (prefers-color-scheme:dark){.toc-head{border-top-color:var(--brass)}}
.toc-num{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:var(--brass);padding-top:4px}
.toc-head h2{font-size:clamp(1.35rem,2vw,1.7rem);margin:0;flex:1 1 auto}
.toc-count{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.toc-section-desc{margin:6px 0 0;font-size:.9rem;color:var(--muted);max-width:62ch}
.toc-list{list-style:none;margin:18px 0 0;padding:0}
.toc-item{border-bottom:1px solid var(--line)}
.toc-item:first-child{border-top:1px solid var(--line)}
.toc-link{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 18px;
  padding:14px 8px 15px 0;text-decoration:none;color:var(--ink);
  transition:background .16s ease,padding .16s var(--ease-out);
}
.toc-link:hover{background:rgba(176,138,74,.075);padding-left:10px;color:var(--ink)}
.toc-title{font-family:var(--f-display);font-size:1.07rem;font-weight:500;line-height:1.35}
.toc-link:hover .toc-title{color:var(--wine)}
.toc-time{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);padding-top:5px;white-space:nowrap}
.toc-excerpt{grid-column:1/-1;margin:1px 0 0;color:var(--muted);font-size:.88rem;line-height:1.5;max-width:78ch}

/* ---------- article ---------- */
.article{
  max-width:900px;padding:38px clamp(22px,4.4vw,56px) 72px;
}
.crumb{font-size:.8rem;letter-spacing:.04em;color:var(--ink-soft);margin-bottom:20px}
.crumb a{color:var(--wine);text-decoration:none}
.crumb a:hover{color:var(--wine)}
.crumb span{margin:0 7px;color:var(--line-strong)}
.article h1{
  font-size:clamp(2rem,3.9vw,3.05rem);line-height:1.08;
  letter-spacing:-.03em;font-weight:600;margin:0 0 18px;max-width:24ch;
}
.article-lead{font-size:1.1rem;line-height:1.65;color:var(--ink-soft);max-width:64ch;margin:0 0 22px}
.article-meta{
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;
  padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;background:var(--brass);transform:rotate(45deg)}
.toc-box{margin:30px 0 40px;padding:0 0 8px;border-bottom:1px solid var(--line)}
.toc-box h2{
  font-family:var(--f-body);font-size:.7rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);font-weight:600;margin:0 0 10px;
}
.toc-box ol{list-style:none;margin:0;padding:0;columns:2;column-gap:38px}
.toc-box li{break-inside:avoid;margin:0 0 7px}
.toc-box a{
  display:flex;gap:9px;font-size:.87rem;line-height:1.4;color:var(--ink-soft);text-decoration:none;
}
.toc-box a:hover{color:var(--wine);text-decoration:underline;text-underline-offset:3px}
.toc-box .n{font-family:var(--f-mono);font-size:.68rem;color:var(--brass);padding-top:3px;flex:0 0 auto}

.content{max-width:70ch}
.content h2{
  font-size:clamp(1.4rem,2.2vw,1.68rem);margin:2.9rem 0 .9rem;
  letter-spacing:-.02em;line-height:1.2;
}
.content h2:first-child{margin-top:.4rem}
.content h3{font-size:1.16rem;margin:2rem 0 .6rem;font-family:var(--f-body);font-weight:600;letter-spacing:-.01em}
.content p{margin:0 0 1.15em}
.content ul,.content ol{margin:0 0 1.3em;padding-left:1.25em}
.content li{margin:0 0 .45em}
.content li::marker{color:var(--brass)}
.content strong{font-weight:600;color:var(--ink)}
.content a{color:var(--wine);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.content a:hover{color:var(--wine-dark);text-decoration-thickness:2px}
.content hr{border:0;border-top:1px solid var(--line);margin:2.4rem 0}
.content table{
  width:100%;border-collapse:collapse;margin:1.9rem 0;font-size:.92rem;line-height:1.5;
  background:var(--surface);border:1px solid var(--line);
}
.content th{
  text-align:left;vertical-align:bottom;padding:11px 13px;
  background:var(--surface-2);color:var(--ink);
  font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;font-weight:600;
  border-bottom:1px solid var(--line-strong);
}
.content td{padding:11px 13px;border-bottom:1px solid var(--line);vertical-align:top}
.content tr:last-child td{border-bottom:0}
.content tbody tr:hover{background:rgba(176,138,74,.055)}
.table-scroll{overflow-x:auto;margin:1.9rem 0;}
.table-scroll table{margin:0;min-width:520px}
.content blockquote{
  margin:1.7rem 0;padding:2px 0 2px 22px;border-left:1px solid var(--brass);
  color:var(--ink-soft);font-family:var(--f-display);font-size:1.06rem;
}
.content code{font-family:var(--f-mono);font-size:.86em;background:var(--surface-2);padding:2px 5px;border-radius:2px}

.info-box,.tip-box,.warning-box{
  margin:1.9rem 0;padding:19px 22px 17px;border:1px solid var(--line);
  border-top:3px solid var(--brass);border-radius:2px;background:var(--box-bg);
  font-size:.96rem;line-height:1.62;color:var(--ink);
}
.tip-box{background:var(--box-tip);border-top-color:var(--navy)}
@media (prefers-color-scheme:dark){.tip-box{border-top-color:var(--brass)}}
.warning-box{background:var(--box-warn);border-top-color:var(--wine)}
.info-box p:last-child,.tip-box p:last-child,.warning-box p:last-child{margin-bottom:0}
.info-box strong,.tip-box strong,.warning-box strong{color:inherit}
.info-box a,.tip-box a,.warning-box a{color:var(--wine)}

.faq-item{border-top:1px solid var(--line);padding:19px 0 5px}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item h3,.faq-item h2{font-family:var(--f-body);font-size:1.03rem;font-weight:600;margin:0 0 7px;letter-spacing:-.005em}
.faq-item p{margin:0 0 .8em;color:var(--ink-soft)}
.content dl{margin:1.5rem 0;display:grid;grid-template-columns:minmax(150px,220px) minmax(0,1fr);gap:0 28px}
.content dt{
  font-weight:600;font-size:.98rem;padding:12px 0;border-top:1px solid var(--line);
  font-family:var(--f-display);
}
.content dd{margin:0;padding:12px 0;border-top:1px solid var(--line);color:var(--ink-soft);font-size:.97rem}

.article-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:52px;
  padding-top:22px;border-top:1px solid var(--line-strong);
}
.article-nav a{
  text-decoration:none;color:var(--ink);padding:14px 16px;border:1px solid var(--line);
  border-radius:2px;transition:border-color .16s ease,background .16s ease;
}
.article-nav a:hover{border-color:var(--brass);background:var(--surface-2);color:var(--ink)}
.article-nav .label{display:block;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.article-nav .t{font-family:var(--f-display);font-size:.98rem;line-height:1.35}
.article-nav .next{text-align:right}
.article-nav .next:only-child{grid-column:2}

/* ---------- footer ---------- */
.site-footer{
  margin-left:var(--sidebar-w);
  background:var(--navy);color:#c6cfdc;
  border-top:1px solid var(--brass);
}
.footer-inner{
  max-width:1180px;display:grid;grid-template-columns:1.4fr 1fr;gap:26px 48px;
  padding:44px clamp(24px,4.4vw,64px) 34px;
}
.footer-brand{display:flex;gap:14px;align-items:flex-start}
.footer-brand strong{font-family:var(--f-display);font-size:1.15rem;color:#f6f4ee;letter-spacing:-.01em}
.footer-brand p{margin:5px 0 0;font-size:.86rem;line-height:1.55;color:#a9b5c6;max-width:46ch}
.footer-nav{display:flex;flex-wrap:wrap;gap:8px 22px;align-content:start;justify-content:flex-end}
.footer-nav a{color:#d5dce6;font-size:.85rem;text-decoration:none}
.footer-nav a:hover{color:var(--brass-light);text-decoration:underline;text-underline-offset:3px}
.footer-credit{grid-column:1/-1;margin:6px 0 0;font-size:.72rem;color:#8e9caf}
.footer-copy{grid-column:1/-1;margin:0;padding-top:14px;border-top:1px solid rgba(255,255,255,.12);font-size:.75rem;color:#8e9caf}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .toc-box ol{columns:1}
}
@media (max-width:1024px){
  :root{--sidebar-w:268px}
  .brand-tag{display:none}
  .footer-inner{grid-template-columns:1fr}
  .footer-nav{justify-content:flex-start}
}
@media (max-width:1180px){
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-doc{display:none}
  .hero-copy{max-width:none;padding:64px clamp(26px,5vw,56px) 68px}
}

@media (max-width:900px){
  :root{--header-h:64px}
  .menu-btn{display:flex}
  .header-inner{padding:0 16px;gap:12px}
  .brand-mark{width:34px;height:34px;font-size:1.15rem}
  .brand-name{font-size:1.12rem}
  .sidebar{transform:translateX(-102%);transition:transform .26s var(--ease-out);width:min(320px,86vw);z-index:96}
  .sidebar-close{display:flex}
  body.nav-open .sidebar{transform:none}
  .main,.site-footer{margin-left:0}
  .search{width:auto;flex:1;min-width:0}
  .search input{height:40px;font-size:.9rem}
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-copy{padding:52px 22px 56px;max-width:none}
  .hero-title{font-size:clamp(2.9rem,11vw,4.4rem)}
  .hero-doc{display:none}
  .home-intro,.toc,.article{padding-left:22px;padding-right:22px}
  .article{padding-top:26px}
  .content dl{grid-template-columns:1fr;gap:0}
  .content dt{padding-bottom:0;border-top:1px solid var(--line)}
  .content dd{padding-top:4px;border-top:0;margin-bottom:10px}
}
@media (max-width:600px){
  body{font-size:17px}
  .search input{padding-left:36px;font-size:16px}
  .search input::placeholder{color:transparent}
  .search input:focus::placeholder{color:var(--muted)}
  .brand-name{font-size:1.02rem}
  .hero{min-height:480px}
  .hero-kicker{font-size:.62rem;letter-spacing:.14em}
  .hero-title{font-size:clamp(2.5rem,14vw,3.4rem)}
  .hero-lede{font-size:.98rem;margin-top:20px}
  .hero-cta{min-height:48px;padding:0 18px;font-size:.9rem;width:100%;justify-content:space-between}
  .article h1{font-size:clamp(1.75rem,8vw,2.3rem)}
  .article-lead{font-size:1rem}
  .content h2{font-size:1.34rem;margin-top:2.4rem}
  .content table{font-size:.86rem}
  .article-nav{grid-template-columns:1fr}
  .article-nav .next{text-align:left}
  .article-nav .next:only-child{grid-column:1}
  .footer-inner{padding:34px 22px 28px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .hero::before{transform:none}
}

/* ---------- print ---------- */
@media print{
  .app-header,.sidebar,.site-footer,#vd-cookie-bar,.article-nav,.toc-box{display:none !important}
  .main{margin:0;padding:0}
  .article{max-width:none;padding:0}
  body{background:#fff;color:#000;font-size:11pt}
}

/* ---------- article figure ---------- */
.article-figure{margin:2rem 0}
.article-figure img{display:block;width:100%;height:auto;border:1px solid var(--line);background:var(--surface-2)}
.article-figure figcaption{margin-top:8px;font-size:.78rem;line-height:1.5;color:var(--muted)}

/* ---------- 404 ---------- */
.notfound{max-width:720px;padding:clamp(56px,9vw,110px) clamp(22px,4vw,48px)}
.nf-code{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.16em;color:var(--wine);margin:0 0 14px}
.notfound h1{font-family:var(--f-display);font-size:clamp(2rem,4.4vw,3rem);line-height:1.12;letter-spacing:-.02em;margin:0 0 14px;color:var(--ink)}
.nf-lead{font-size:1.04rem;color:var(--ink-soft);max-width:46ch;margin:0 0 26px}
.nf-btn{display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 22px;background:var(--wine);color:#fff;text-decoration:none;font-weight:600;font-size:.92rem;border-radius:2px;transition:background .18s ease-out,transform .14s ease-out}
.nf-btn:hover{background:var(--wine-deep,#5e1c2b)}
.nf-btn:active{transform:scale(.98)}

/* ---------- related ---------- */
.related{margin:48px 0 0;padding-top:8px;border-top:1px solid var(--line-strong)}
.related h2{font-family:var(--f-display);font-size:1.28rem;letter-spacing:-.01em;margin:0 0 4px;color:var(--ink)}
.related ul{list-style:none;margin:0;padding:0}
.related li{border-bottom:1px solid var(--line)}
.related li:last-child{border-bottom:0}
.related a{display:block;padding:14px 0;text-decoration:none;transition:transform .16s var(--ease-out)}
.related a:hover{transform:translateX(3px)}
.related .rt{display:block;font-weight:600;font-size:.98rem;color:var(--wine);line-height:1.35}
.related .re{display:block;font-size:.84rem;color:var(--muted);line-height:1.5;margin-top:3px}

@media (min-width:1280px){
  .toc-list{column-count:2;column-gap:64px}
  .toc-item{break-inside:avoid;-webkit-column-break-inside:avoid}
  .toc-item:first-child{border-top:0}
}