/* ===== Reset ===== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 1.2rem; }
:focus-visible { outline: 2px solid #6aa7ff; outline-offset: 2px; }

/* ===== Theme ===== */
:root{
  --bg:#ffffff; --text:#111; --muted:#666; --border:#e6e6e6;
  --brand:#0f62fe; --accent:#06c167; --codebg:#f6f7f9;
  --container:1200px; --post:720px; --radius:14px; --shadow:0 6px 24px rgba(0,0,0,.06);
  --mono: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
}
:root.dark{
  --bg:#0b0b0c; --text:#e8e8ea; --muted:#a0a0a6; --border:#1d1d22;
  --brand:#5b8cff; --accent:#59d58b; --codebg:#141418;
}

body{
  font: 17px/1.75 system-ui,-apple-system,"Segoe UI",Inter,Roboto,Arial;
  color:var(--text); background:var(--bg);
  text-rendering:optimizeLegibility; -webkit-font-smoothing:antialiased;
}

.container{ max-width:var(--container); margin-inline:auto; padding-inline:clamp(16px,3vw,24px); }

/* ===== Header ===== */
.site-header{ position:sticky; top:0; z-index:50; backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--bg) 85%, transparent); border-bottom:1px solid var(--border); }
.header-inner{ display:grid; grid-template-columns:1fr; gap:16px; align-items:center; padding-block:12px; }
.brand{ display:inline-flex; justify-content: center;gap:10px; align-items:center; text-decoration:none; color:var(--text); font-weight:800; letter-spacing:.2px; }
.brand-logo{ color:var(--brand); }
.site-nav .nav-toggle{ display:none; }
.nav-menu{ display:flex; gap:18px; list-style:none; margin:0; padding:0; }
.nav-menu a{ text-decoration:none; color:var(--text); font-weight:500; }
.nav-menu a:hover{ color:var(--brand); }
.theme-toggle{ background:none; border:1px solid var(--border); border-radius:999px; padding:8px 12px; cursor:pointer; }
.progress-bar{ position:absolute; left:0; bottom:0; height:3px; width:0%; background:linear-gradient(90deg,var(--brand),var(--accent)); }

/* ===== Layout ===== */
.layout{ display:grid; grid-template-columns: 1fr minmax(0,var(--post)) 1fr; gap:28px; padding-block:32px; }
.rail .ad-card{ position:sticky; top:92px; background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:8px; box-shadow:var(--shadow); margin-bottom:16px; }
.ad-label{ display:inline-block; font-size:12px; color:var(--muted); border:1px solid var(--border); border-radius:6px; padding:2px 6px; margin-bottom:8px; }

/* Inline ad */
.ad-inline{ display:flex; flex-direction:column; align-items:center; gap:6px; border:1px dashed var(--border); padding:12px; border-radius:var(--radius); margin:22px 0; }

/* ===== Post ===== */
.post{ min-width:0; }
.post-title{ font-size:clamp(30px,4.5vw,44px); line-height:1.15; margin:10px 0 4px; }
.post-meta{ display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:center; color:var(--muted); font-size:14px; margin-bottom:10px;margin-top: 16px; }
.author-avatar{ width:44px; height:44px; border-radius:50%; border:1px solid var(--border); }
.dot{ margin:0 6px; color:var(--muted); }

.post-hero{ margin:16px 0 6px; }
.post-hero img{ border-radius:var(--radius); box-shadow:var(--shadow); }
.post-hero figcaption{ color:var(--muted); font-size:13px; margin-top:6px; }

.post-toc{ margin:18px 0 8px; padding:12px; border:1px dashed var(--border); border-radius:var(--radius); }
.post-toc strong{ display:block; margin-bottom:6px; }
.post-toc ol{ margin:0; padding-left:18px; }
.post-toc a{ text-decoration:none; color:var(--text); }
.post-toc a.active{ color:var(--brand); font-weight:600; }

.post-body{ font-size:18px; }
.post-body .lede{ font-size:20px; }
.post-body h2{ margin-top:28px; margin-bottom:8px; font-size:26px; }
.post-body h3{ margin-top:22px; margin-bottom:6px; font-size:21px; }
.post-body p{ margin:10px 0; }
.post-body blockquote{ margin:18px 0; padding:12px 16px; border-left:4px solid var(--brand);
  background: color-mix(in srgb, var(--brand) 6%, var(--bg)); border-radius:0 var(--radius) var(--radius) 0; }
.pull{ font-style:italic; }

.code-block{ position:relative; background:var(--codebg); border:1px solid var(--border); border-radius:12px; padding:14px; overflow:auto; font-family:var(--mono); font-size:14px; }
.code-copy{ position:absolute; top:8px; right:8px; font-size:12px; border:1px solid var(--border); border-radius:8px; padding:6px 8px; background:var(--bg); cursor:pointer; }

.post-footer{ margin-top:26px; border-top:1px solid var(--border); padding-top:16px; }
.post-tags a{ display:inline-block; font-size:13px; color:var(--text); border:1px solid var(--border); padding:6px 10px; border-radius:999px; text-decoration:none; margin:0 8px 8px 0; }

.author-box{ display:grid; grid-template-columns:auto 1fr; gap:14px; align-items:start; border:1px solid var(--border); border-radius:var(--radius); padding:14px; margin-top:18px; }
.author-box img{ width:64px; height:64px; border-radius:50%; border:1px solid var(--border); }

.related{ margin-top:22px; }
.related-list{ display:grid; gap:10px; padding-left:18px; }

/* ===== Sticky share rail ===== */
.share-rail{ position:fixed; left:24px; top:30%; display:flex; flex-direction:column; gap:10px; z-index:5; }
.share-btn{ display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px; border-radius:999px; border:1px solid var(--border); background:var(--bg); text-decoration:none; color:var(--text); }
.share-btn:hover{ border-color:var(--brand); }

/* ===== Footer ===== */
.site-footer{ border-top:1px solid var(--border); margin-top:40px; }
.footer-grid{ display:grid; gap:24px; grid-template-columns:1.2fr 1fr; padding-block:32px; }
.footer-links ul{ list-style:none; margin:0; padding:0; }
.footer-bottom{ padding-bottom:24px;display: flex
;
    justify-content: center;
    margin-top: 25px; }
.newsletter-form{ display:flex; gap:8px; }
.newsletter-form input{ flex:1; padding:10px 12px; border:1px solid var(--border); border-radius:10px; background:var(--bg); color:var(--text); }
.newsletter-form button{ padding:10px 14px; border-radius:10px; border:1px solid var(--border); background:var(--brand); color:#fff; cursor:pointer; }

/* ===== Consent ===== */
.consent{ position:sticky; top:0; z-index:60; background: color-mix(in srgb, var(--bg) 92%, transparent); border-bottom:1px solid var(--border); }
.consent-inner{ display:flex; align-items:center; justify-content:space-between; gap:16px; padding-block:10px; }
.btn{ border:1px solid var(--border); background:var(--bg); padding:8px 12px; border-radius:10px; cursor:pointer; }
.btn-primary{ background:var(--brand); color:#fff; border-color:transparent; }

/* ===== Small Screens ===== */
@media (max-width:1120px){
  .layout{ grid-template-columns: 1fr minmax(0,var(--post)); }
  .rail-left{ display:none; }
  .share-rail{ display:none; }
}
@media (max-width:860px){
  .layout{ grid-template-columns: minmax(0,1fr); gap:0; }
  .rail-right{ display:none; }
  .site-nav .nav-toggle{ display:inline-flex; }
  .nav-menu{ display:none; position:absolute; right:16px; top:58px; background:var(--bg); border:1px solid var(--border); border-radius:10px; padding:10px; box-shadow:var(--shadow); }
  .nav-menu.open{ display:block; }
}

/* ===== Utilities ===== */
.sr-only{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }

.d-none{
    display: none;
}

.brand-text{
    font-size: 30px;
}