/* ============================================================
   Angular In Depth — design system
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --ng-1:#E40035; --ng-2:#F20089; --ng-3:#9911B7; --ng-4:#3B4EF6;
  --grad: linear-gradient(120deg, var(--ng-1) 0%, var(--ng-2) 34%, var(--ng-3) 66%, var(--ng-4) 100%);
  --grad-soft: linear-gradient(120deg, rgba(228,0,53,.14), rgba(153,17,183,.14) 60%, rgba(59,78,246,.14));

  --bg:#0A0C11;
  --bg-elev:#10131B;
  --surface:#141824;
  --surface-2:#191E2C;
  --border:#242B3D;
  --border-soft:#1C2231;
  --text:#EAEDF6;
  --text-2:#B4BCD0;
  --muted:#8A93AA;
  --code-bg:#0D1017;

  --radius-s:8px; --radius:14px; --radius-l:22px;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px -12px rgba(0,0,0,.6);
  --maxw: 1240px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

:root[data-theme="light"] {
  --bg:#FFFFFF;
  --bg-elev:#F7F8FC;
  --surface:#FFFFFF;
  --surface-2:#F4F6FB;
  --border:#E3E7F0;
  --border-soft:#EDF0F7;
  --text:#0D111C;
  --text-2:#454F66;
  --muted:#6C778F;
  --code-bg:#0D1017;
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 12px 28px -14px rgba(16,24,40,.18);
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:var(--font); font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;line-height:1.18;letter-spacing:-.022em;font-weight:700}
p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
::selection{background:rgba(242,0,137,.3)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- announcement ---------- */
.announce{
  background:var(--grad); color:#fff; font-size:13.5px; font-weight:500;
  text-align:center; padding:9px 24px; letter-spacing:.01em;
}
.announce a{text-decoration:underline;text-underline-offset:3px;font-weight:600}
.announce .pill{
  background:rgba(255,255,255,.2); border-radius:999px; padding:2px 9px;
  font-size:11px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; margin-right:8px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border-soft);
}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;letter-spacing:-.03em}
.brand .mark{width:32px;height:32px;flex:none}
.brand small{display:block;font-size:10.5px;font-weight:600;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-top:-3px}
.nav-links{display:flex;gap:4px;margin-left:8px}
.nav-links a{
  padding:8px 12px;border-radius:9px;font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:.15s color,.15s background;
}
.nav-links a:hover{color:var(--text);background:var(--surface-2)}
.nav-links a.active{color:var(--text);font-weight:600}
.nav-links a.active::after{
  content:"";display:block;height:2px;border-radius:2px;background:var(--grad);margin-top:5px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.search{
  display:flex;align-items:center;gap:8px;background:var(--surface-2);
  border:1px solid var(--border-soft);border-radius:10px;padding:7px 10px;color:var(--muted);
  font-size:13.5px;min-width:210px;transition:.15s border-color;
}
.search:hover{border-color:var(--border)}
.search kbd{
  margin-left:auto;font-family:var(--mono);font-size:10.5px;background:var(--bg-elev);
  border:1px solid var(--border);border-radius:5px;padding:1px 5px;color:var(--muted);
}
.icon-btn{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border-soft);
  background:var(--surface-2);display:grid;place-items:center;color:var(--text-2);transition:.15s;
}
.icon-btn:hover{color:var(--text);border-color:var(--border)}
.btn{
  display:inline-flex;align-items:center;gap:8px;border-radius:10px;padding:9px 16px;
  font-size:14px;font-weight:600;transition:.18s transform,.18s box-shadow,.18s background;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px -8px rgba(242,0,137,.85)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(242,0,137,.9)}
.btn-ghost{border:1px solid var(--border);color:var(--text-2);background:var(--surface)}
.btn-ghost:hover{color:var(--text);border-color:var(--muted)}

/* ---------- tags / meta ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;
  letter-spacing:.07em;text-transform:uppercase;padding:4px 9px;border-radius:6px;
  background:var(--surface-2);border:1px solid var(--border-soft);color:var(--text-2);
}
.tag.grad{background:var(--grad);color:#fff;border-color:transparent}
.tag.signals{color:#F20089;border-color:rgba(242,0,137,.35);background:rgba(242,0,137,.1)}
.tag.rxjs{color:#B36BFF;border-color:rgba(153,17,183,.4);background:rgba(153,17,183,.12)}
.tag.perf{color:#3FC7A8;border-color:rgba(63,199,168,.35);background:rgba(63,199,168,.1)}
.tag.news{color:#5B8CFF;border-color:rgba(59,78,246,.4);background:rgba(59,78,246,.12)}
.tag.ssr{color:#F0A93B;border-color:rgba(240,169,59,.35);background:rgba(240,169,59,.1)}

.meta{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted)}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted);opacity:.6}
.avatar{
  width:28px;height:28px;border-radius:50%;display:grid;place-items:center;flex:none;
  font-size:11px;font-weight:700;color:#fff;letter-spacing:.02em;
}
.a1{background:linear-gradient(135deg,#E40035,#F20089)}
.a2{background:linear-gradient(135deg,#9911B7,#3B4EF6)}
.a3{background:linear-gradient(135deg,#0F9D77,#3B4EF6)}
.a4{background:linear-gradient(135deg,#F0A93B,#E40035)}
.a5{background:linear-gradient(135deg,#3B4EF6,#00C2FF)}

/* ---------- hero ---------- */
.hero{padding:44px 0 26px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-160px 0 auto -10%;height:420px;
  background:radial-gradient(60% 60% at 22% 40%, rgba(228,0,53,.20), transparent 70%),
             radial-gradient(50% 60% at 70% 30%, rgba(59,78,246,.18), transparent 70%);
  filter:blur(10px);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.55fr 1fr;gap:22px}
.hero-main{
  position:relative;border-radius:var(--radius-l);border:1px solid var(--border);
  background:var(--surface);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
}
.hero-visual{
  position:relative;height:250px;background:
    radial-gradient(120% 120% at 12% 0%, rgba(228,0,53,.55), transparent 55%),
    radial-gradient(100% 120% at 88% 20%, rgba(59,78,246,.5), transparent 60%),
    linear-gradient(140deg,#1A1030,#0B0E18);
  display:grid;place-items:center;overflow:hidden;
}
.hero-visual .glyph{width:120px;height:120px;opacity:.95;filter:drop-shadow(0 12px 30px rgba(0,0,0,.5))}
.grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:34px 34px;mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent);
}
.hero-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:14px}
.hero-body h1{font-size:34px;letter-spacing:-.032em}
.hero-body p{color:var(--text-2);font-size:16px}
.badge-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

.hero-side{display:flex;flex-direction:column;gap:14px}
.side-card{
  border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);
  padding:16px 18px;display:flex;flex-direction:column;gap:9px;transition:.18s;flex:1;
}
.side-card:hover{border-color:#39425B;transform:translateY(-2px)}
.side-card h3{font-size:16.5px;letter-spacing:-.02em}
.side-card:hover h3{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- section head ---------- */
.section{padding-top:38px;padding-bottom:38px}   /* vertical only — must not reset .wrap side padding */
.section-head{display:flex;align-items:flex-end;gap:16px;margin-bottom:20px}
.section-head h2{font-size:23px;letter-spacing:-.025em}
.section-head .sub{color:var(--muted);font-size:14px;margin-top:4px}
.section-head .more{margin-left:auto;font-size:14px;font-weight:600;color:var(--text-2);display:flex;gap:6px;align-items:center}
.section-head .more:hover{color:var(--ng-2)}

.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:20px;border-bottom:1px solid var(--border-soft);padding-bottom:12px}
.tabs button{
  padding:6px 13px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--muted);
  border:1px solid transparent;transition:.15s;
}
.tabs button:hover{color:var(--text);background:var(--surface-2)}
.tabs button.on{color:#fff;background:var(--grad);box-shadow:0 6px 16px -10px rgba(242,0,137,.9)}

/* ---------- layout: feed + sidebar ---------- */
.layout{display:grid;grid-template-columns:1fr 330px;gap:38px;align-items:start}

.feed{display:flex;flex-direction:column;gap:2px}
.post{
  display:grid;grid-template-columns:150px 1fr;gap:20px;padding:20px 16px;
  border-radius:var(--radius);border:1px solid transparent;transition:.16s;
}
.post:hover{background:var(--surface);border-color:var(--border-soft)}
.post:hover h3{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.thumb{
  height:104px;border-radius:10px;position:relative;overflow:hidden;border:1px solid var(--border-soft);
  display:grid;place-items:center;
}
.thumb svg{width:44px;height:44px;opacity:.9}
.t1{background:linear-gradient(140deg,#2A0B22,#120B26)}
.t2{background:linear-gradient(140deg,#0B1E2A,#0C1230)}
.t3{background:linear-gradient(140deg,#241033,#0E1024)}
.t4{background:linear-gradient(140deg,#0C2A22,#0A1526)}
.t5{background:linear-gradient(140deg,#2C1A08,#170D20)}
.post-body{display:flex;flex-direction:column;gap:9px;min-width:0}
.post-body h3{font-size:18.5px;letter-spacing:-.02em}
.post-body p{color:var(--muted);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.divider{height:1px;background:var(--border-soft);margin:0 16px}

.loadmore{margin-top:22px;display:flex;justify-content:center}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:86px;display:flex;flex-direction:column;gap:20px}
.panel{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);padding:18px}
.panel h4{
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  margin-bottom:14px;display:flex;align-items:center;gap:8px;font-weight:700;
}
.trend{display:flex;gap:13px;padding:9px 0;border-bottom:1px dashed var(--border-soft)}
.trend:last-child{border-bottom:0;padding-bottom:0}
.trend .num{font-family:var(--mono);font-size:19px;font-weight:700;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.85}
.trend span.t{font-size:14.5px;font-weight:600;line-height:1.35}
.trend:hover span.t{color:var(--ng-2)}
.trend small{color:var(--muted);font-size:12.5px}

.newsletter{
  border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden;
  background:var(--grad-soft);
}
.newsletter::after{
  content:"";position:absolute;right:-40px;top:-40px;width:150px;height:150px;border-radius:50%;
  background:var(--grad);opacity:.18;filter:blur(20px);
}
.newsletter h3{font-size:17px;margin-bottom:6px;letter-spacing:-.02em}
.newsletter p{color:var(--text-2);font-size:13.5px;margin-bottom:14px}
.field{display:flex;gap:8px}
.field input{
  flex:1;min-width:0;background:var(--bg-elev);border:1px solid var(--border);border-radius:9px;
  padding:9px 11px;color:var(--text);font-size:13.5px;outline:none;
}
.field input::placeholder{color:var(--muted)}
.field input:focus{border-color:var(--ng-2)}
.newsletter small{display:block;margin-top:10px;color:var(--muted);font-size:11.5px}

.topics{display:flex;flex-wrap:wrap;gap:7px}
.topics a{
  font-size:13px;font-weight:500;padding:5px 10px;border-radius:8px;background:var(--surface-2);
  border:1px solid var(--border-soft);color:var(--text-2);transition:.15s;
}
.topics a:hover{color:var(--text);border-color:var(--ng-3)}
.topics a b{color:var(--muted);font-weight:600;font-size:11.5px;margin-left:5px}

.release{display:flex;gap:12px;padding:10px 0;position:relative}
.release + .release{border-top:1px dashed var(--border-soft)}
.release .v{
  font-family:var(--mono);font-size:12px;font-weight:700;color:#fff;background:var(--grad);
  border-radius:6px;padding:3px 7px;height:fit-content;flex:none;
}
.release .v.old{background:var(--surface-2);color:var(--muted);border:1px solid var(--border-soft)}
.release div p{font-size:13.5px;font-weight:600}
.release div small{color:var(--muted);font-size:12px}

/* ---------- code showcase ---------- */
.showcase{
  border:1px solid var(--border);border-radius:var(--radius-l);overflow:hidden;background:var(--surface);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);box-shadow:var(--shadow);
}
.showcase-copy{padding:34px;display:flex;flex-direction:column;gap:16px;justify-content:center}
.showcase-copy h2{font-size:27px;letter-spacing:-.03em}
.showcase-copy p{color:var(--text-2);font-size:15.5px}
.checks{display:flex;flex-direction:column;gap:9px;margin-top:2px}
.checks li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);list-style:none}
.checks svg{flex:none;margin-top:3px}
.checks ul{padding:0;margin:0}

.code{background:var(--code-bg);border-left:1px solid var(--border);display:flex;flex-direction:column;min-width:0}
.code-bar{
  display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid #1A2030;
  font-family:var(--mono);font-size:12px;color:#6B7590;
}
.code-bar .dots{display:flex;gap:6px;margin-right:6px}
.code-bar .dots i{width:10px;height:10px;border-radius:50%;display:block}
.code-bar .copy{margin-left:auto;color:#6B7590;font-size:11.5px;border:1px solid #1F2637;border-radius:6px;padding:2px 7px}
pre{margin:0;padding:20px 22px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.75;color:#C9D3EA}
.k{color:#F20089}.f{color:#5B8CFF}.s{color:#3FC7A8}.c{color:#5C6579;font-style:italic}
.n{color:#F0A93B}.d{color:#B36BFF}.p{color:#8A93AA}

/* ---------- cards row ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{
  border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.18s;
}
.card:hover{transform:translateY(-3px);border-color:#39425B;box-shadow:var(--shadow)}
.card .cover{height:132px;display:grid;place-items:center;position:relative;overflow:hidden}
.card .cover svg{width:40px;height:40px;opacity:.92}
.card .c-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:9px;flex:1}
.card h3{font-size:17px;letter-spacing:-.02em}
.card p{color:var(--muted);font-size:14px}
.card .meta{margin-top:auto;padding-top:6px}

/* ---------- authors ---------- */
.authors{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.author{
  border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);
  padding:20px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px;transition:.18s;
}
.author:hover{border-color:#39425B;transform:translateY(-2px)}
.author .avatar{width:54px;height:54px;font-size:18px}
.author b{font-size:15px}
.author small{color:var(--muted);font-size:12.5px;line-height:1.45}
.author .stats{display:flex;gap:12px;font-size:12px;color:var(--muted);margin-top:4px}
.author .stats b{color:var(--text-2);font-size:12.5px}

/* ---------- big CTA ---------- */
.cta{
  margin:44px 0;border-radius:var(--radius-l);padding:44px;position:relative;overflow:hidden;
  background:linear-gradient(130deg,#180A24,#0C1030 60%,#0A0C11);border:1px solid var(--border);
  display:flex;align-items:center;gap:34px;
}
.cta::before{
  content:"";position:absolute;inset:auto -10% -60% 40%;height:320px;
  background:radial-gradient(50% 60% at 50% 50%, rgba(242,0,137,.35), transparent 70%),
             radial-gradient(50% 60% at 80% 40%, rgba(59,78,246,.32), transparent 70%);
  filter:blur(6px);
}
.cta-copy{position:relative;flex:1}
.cta h2{font-size:29px;letter-spacing:-.03em;margin-bottom:10px;color:#fff}
.cta p{color:#B7BFD6;font-size:15.5px;max-width:520px}
.cta-form{position:relative;display:flex;gap:10px;min-width:380px}
.cta-form input{
  flex:1;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:11px;
  padding:13px 15px;color:#fff;font-size:14.5px;outline:none;
}
.cta-form input::placeholder{color:#8C93A8}
.cta-form input:focus{border-color:var(--ng-2)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border-soft);background:var(--bg-elev);margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px;padding:48px 0 34px}
.foot-brand p{color:var(--muted);font-size:14px;margin:14px 0 16px;max-width:280px}
.socials{display:flex;gap:8px}
.socials a{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--border);background:var(--surface);
  display:grid;place-items:center;color:var(--text-2);transition:.15s;
}
.socials a:hover{color:var(--text);border-color:var(--ng-3)}
.foot-col h5{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--text);margin:0 0 14px;font-weight:700}
.foot-col a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:.15s}
.foot-col a:hover{color:var(--ng-2)}
.foot-bottom{
  border-top:1px solid var(--border-soft);padding:18px 0;display:flex;gap:16px;align-items:center;
  color:var(--muted);font-size:13px;flex-wrap:wrap;
}
.foot-bottom .r{margin-left:auto;display:flex;gap:18px}

/* ---------- article page ---------- */
.crumbs{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;padding:22px 0 0}
.crumbs a:hover{color:var(--ng-2)}
.article-head{padding:18px 0 30px;max-width:780px}
.article-head h1{font-size:42px;letter-spacing:-.035em;margin:14px 0 16px}
.article-head .lead{font-size:18.5px;color:var(--text-2);line-height:1.55}
.byline{display:flex;align-items:center;gap:12px;margin-top:24px;flex-wrap:wrap}
.byline .avatar{width:42px;height:42px;font-size:15px}
.byline b{font-size:14.5px;display:block}
.byline small{color:var(--muted);font-size:13px}
.byline .acts{margin-left:auto;display:flex;gap:8px}

.cover-wide{
  height:320px;border-radius:var(--radius-l);border:1px solid var(--border);overflow:hidden;
  display:grid;place-items:center;position:relative;
  background:radial-gradient(90% 120% at 20% 0%, rgba(228,0,53,.5), transparent 55%),
             radial-gradient(80% 120% at 85% 30%, rgba(59,78,246,.45), transparent 60%),
             linear-gradient(140deg,#190E2C,#0A0D16);
}
.cover-wide .glyph{width:110px;height:110px;filter:drop-shadow(0 14px 34px rgba(0,0,0,.55))}

.art-layout{display:grid;grid-template-columns:250px minmax(0,1fr) 250px;gap:44px;padding:40px 0;align-items:start}
.toc{position:sticky;top:90px;font-size:14px}
.toc h4{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px;font-weight:700}
.toc a{display:block;padding:6px 0 6px 13px;border-left:2px solid var(--border-soft);color:var(--muted);transition:.15s}
.toc a:hover{color:var(--text)}
.toc a.on{color:var(--text);border-left-color:var(--ng-2);font-weight:600}
.toc .l2{padding-left:26px;font-size:13.5px}

.prose{font-size:17px;line-height:1.75;color:var(--text-2);max-width:720px}
.prose h2{font-size:26px;color:var(--text);margin:38px 0 14px;letter-spacing:-.028em;scroll-margin-top:90px}
.prose h3{font-size:20px;color:var(--text);margin:28px 0 10px;letter-spacing:-.02em}
.prose p{margin:0 0 18px}
.prose ul{margin:0 0 18px;padding-left:22px}
.prose li{margin-bottom:8px}
.prose strong{color:var(--text);font-weight:600}
.prose code{
  font-family:var(--mono);font-size:14px;background:var(--surface-2);border:1px solid var(--border-soft);
  border-radius:6px;padding:1.5px 6px;color:var(--ng-2);
}
.prose .codeblock{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin:0 0 22px;background:var(--code-bg)}
.prose .codeblock pre{font-size:13.5px}
.prose a.inline{color:var(--ng-2);border-bottom:1px solid rgba(242,0,137,.4)}

.callout{
  border-radius:var(--radius);padding:18px 20px;margin:0 0 22px;display:flex;gap:14px;
  border:1px solid rgba(59,78,246,.35);background:rgba(59,78,246,.09);
}
.callout.warn{border-color:rgba(240,169,59,.35);background:rgba(240,169,59,.09)}
.callout .ic{flex:none;margin-top:2px}
.callout b{display:block;color:var(--text);margin-bottom:4px;font-size:14.5px}
.callout p{margin:0;font-size:14.5px}

figure{margin:0 0 24px}
figure .fig{
  border:1px solid var(--border);border-radius:var(--radius);height:230px;display:grid;place-items:center;
  background:var(--surface-2);color:var(--muted);font-size:13.5px;font-family:var(--mono);
}
figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}

.rail{position:sticky;top:90px;display:flex;flex-direction:column;gap:16px}
.share{display:flex;flex-direction:column;gap:8px}
.share button{
  display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--text-2);border:1px solid var(--border);
  background:var(--surface);border-radius:9px;padding:8px 11px;transition:.15s;
}
.share button:hover{color:var(--text);border-color:var(--ng-3)}

.author-box{
  border:1px solid var(--border);border-radius:var(--radius-l);background:var(--surface);padding:24px;
  display:flex;gap:18px;align-items:flex-start;margin:34px 0 0;max-width:720px;
}
.author-box .avatar{width:58px;height:58px;font-size:19px}
.author-box b{font-size:16.5px}
.author-box p{color:var(--muted);font-size:14.5px;margin:6px 0 12px}

.next-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:720px;margin-top:26px}
.next-nav a{
  border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;background:var(--surface);transition:.16s;
}
.next-nav a:hover{border-color:#39425B;transform:translateY(-2px)}
.next-nav small{color:var(--muted);font-size:12px;display:block;margin-bottom:6px}
.next-nav b{font-size:15px;line-height:1.35;display:block}
.next-nav .r{text-align:right}

.progress{position:fixed;top:0;left:0;height:3px;background:var(--grad);z-index:99;width:0}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .art-layout{grid-template-columns:minmax(0,1fr);gap:26px}
  .toc,.rail{position:static;display:none}
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .showcase{grid-template-columns:minmax(0,1fr)}
  .code{border-left:0;border-top:1px solid var(--border)}
  .authors{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr 1fr}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .nav-links,.search{display:none}
  .cta{flex-direction:column;align-items:flex-start;padding:30px}
  .cta-form{min-width:0;width:100%}
  .article-head h1{font-size:32px}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .nav{gap:12px}
  .brand span{font-size:16px}
  .btn{padding:8px 13px}
  .showcase-copy{padding:24px}
  .post{grid-template-columns:1fr}
  .thumb{height:150px}
  .sidebar{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-body h1{font-size:26px}
}

/* ---------- data-feed additions ---------- */
.feed-controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-left:auto}
.feed-controls .q{
  background:var(--surface-2);border:1px solid var(--border-soft);border-radius:10px;
  padding:8px 12px;color:var(--text);font-size:13.5px;outline:none;min-width:210px;transition:.15s border-color;
}
.feed-controls .q::placeholder{color:var(--muted)}
.feed-controls .q:focus{border-color:var(--ng-2)}
.sel{
  background:var(--surface-2);border:1px solid var(--border-soft);border-radius:10px;
  padding:8px 10px;color:var(--text-2);font-size:13px;outline:none;cursor:pointer;
  font-family:var(--font);max-width:190px;
}
.sel:hover{border-color:var(--border)}
.src-badge{
  font-size:11px;font-weight:600;color:var(--muted);background:var(--surface-2);
  border:1px solid var(--border-soft);border-radius:6px;padding:2px 7px;letter-spacing:.01em;
}
.post:hover .src-badge{color:var(--text-2);border-color:var(--border)}
#feed-list{display:flex;flex-direction:column}
.topics a[data-year] b,.topics a[data-src] b{color:var(--ng-2);opacity:.8}

@media (max-width:900px){
  .feed-controls{width:100%;margin-left:0}
  .feed-controls .q{flex:1;min-width:0}
  .section-head{flex-wrap:wrap}
}

/* ---------- internal article page additions ---------- */
.toc .detail-row{
  display:flex;justify-content:space-between;gap:12px;padding:9px 0;font-size:13px;
  border-bottom:1px dashed var(--border-soft);
}
.toc .detail-row:last-child{border-bottom:0}
.toc .detail-row span{color:var(--muted)}
.toc .detail-row b{color:var(--text-2);text-align:right;font-weight:600}
.prose .lead-in{font-size:19px;line-height:1.6;color:var(--text);margin-bottom:24px}
.read-original{
  border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-2);
  padding:20px 22px;display:flex;align-items:center;gap:18px;margin:0 0 24px;flex-wrap:wrap;
}
.read-original div{flex:1;min-width:200px;display:flex;flex-direction:column;gap:3px}
.read-original small{color:var(--muted);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:700}
.read-original b{font-size:16px;letter-spacing:-.01em}
.read-original span{color:var(--muted);font-size:13px}
.share .sharebtn{
  display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--text-2);border:1px solid var(--border);
  background:var(--surface);border-radius:9px;padding:8px 11px;transition:.15s;
}
.share .sharebtn:hover{color:var(--text);border-color:var(--ng-3)}
.byline .acts .btn-primary{white-space:nowrap}
@media (max-width:900px){ .byline .acts{margin-left:0;width:100%} .byline .acts .btn{width:100%;justify-content:center} }

/* ---------- mirrored full-text article body ---------- */
.article-body{font-size:17px;line-height:1.75;color:var(--text-2)}
.article-body > *:first-child{margin-top:0}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{
  color:var(--text);margin:34px 0 12px;letter-spacing:-.022em;line-height:1.25;scroll-margin-top:90px}
.article-body h1{font-size:28px}
.article-body h2{font-size:24px}
.article-body h3{font-size:20px}
.article-body h4{font-size:17px}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--ng-2);border-bottom:1px solid rgba(242,0,137,.35)}
.article-body a:hover{border-bottom-color:var(--ng-2)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:24px}
.article-body li{margin-bottom:8px}
.article-body strong,.article-body b{color:var(--text);font-weight:600}
.article-body img{border-radius:var(--radius);margin:8px 0 22px;border:1px solid var(--border-soft);max-width:100%;height:auto}
.article-body figure{margin:0 0 22px}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body blockquote{
  margin:0 0 22px;padding:6px 18px;border-left:3px solid var(--ng-3);
  color:var(--text-2);background:var(--surface-2);border-radius:0 var(--radius) var(--radius) 0}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{
  font-family:var(--mono);font-size:14px;background:var(--surface-2);border:1px solid var(--border-soft);
  border-radius:6px;padding:1.5px 6px;color:var(--ng-2)}
.article-body pre{
  background:var(--code-bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;overflow:auto;margin:0 0 22px;font-size:13.5px;line-height:1.7;color:#C9D3EA}
.article-body pre code{background:none;border:0;padding:0;color:inherit;font-size:13.5px}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14.5px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--border);padding:8px 12px;text-align:left}
.article-body th{background:var(--surface-2);color:var(--text);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--border-soft);margin:28px 0}
.article-body iframe{max-width:100%;border-radius:var(--radius);border:1px solid var(--border-soft);margin:0 0 22px}
.source-note{
  margin:8px 0 24px;padding:16px 18px;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--grad-soft);font-size:14px;color:var(--text-2)}
.source-note b{color:var(--text)}
.source-note a{color:var(--ng-2);font-weight:600}

/* ================= static site additions ================= */
.searchform{display:flex;align-items:center;gap:8px;background:var(--surface-2);
  border:1px solid var(--border-soft);border-radius:10px;padding:7px 10px;color:var(--muted);transition:.15s}
.searchform:focus-within{border-color:var(--ng-2)}
.searchform input{background:none;border:0;outline:none;color:var(--text);font-size:13.5px;
  font-family:var(--font);min-width:180px}
.searchform input::placeholder{color:var(--muted)}
.bigsearch{margin:0 0 22px}
.bigsearch input{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;
  padding:14px 18px;color:var(--text);font-size:16px;font-family:var(--font);outline:none}
.bigsearch input:focus{border-color:var(--ng-2)}
.post.compact{grid-template-columns:1fr}

/* pager */
.pager{display:flex;gap:6px;align-items:center;justify-content:center;margin:30px 0 6px;flex-wrap:wrap}
.pg{min-width:36px;height:36px;padding:0 11px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text-2);
  font-size:14px;font-weight:600;transition:.15s}
.pg:hover{color:var(--text);border-color:var(--ng-3)}
.pg.on{background:var(--grad);color:#fff;border-color:transparent}
.pager .gap{color:var(--muted);padding:0 2px}
.panel-more{display:block;margin-top:13px;padding-top:12px;border-top:1px solid var(--border-soft);
  font-size:13px;font-weight:600;color:var(--ng-2)}
.panel-more:hover{opacity:.8}

/* mini author rows in sidebar */
.mini-author{display:flex;align-items:center;gap:11px;padding:8px 0;border-bottom:1px dashed var(--border-soft)}
.mini-author:last-of-type{border-bottom:0}
.mini-author b{font-size:14px;display:block;line-height:1.3}
.mini-author small{color:var(--muted);font-size:12px}
.mini-author:hover b{color:var(--ng-2)}
.avatar.big{width:56px;height:56px;font-size:19px}

/* author hero */
.author-hero{border-bottom:1px solid var(--border-soft);background:var(--grad-soft);padding:36px 0}
.author-hero-in{display:flex;gap:22px;align-items:flex-start}
.author-hero h1{font-size:32px;letter-spacing:-.03em;margin-bottom:8px}
.author-hero p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
.author-stats{display:flex;gap:20px;margin-bottom:14px;flex-wrap:wrap}
.author-stats span{font-size:13.5px;color:var(--muted)}
.author-stats b{color:var(--text);font-size:16px;font-weight:700;margin-right:4px}
.byline-a{display:flex;align-items:center;gap:12px}
.byline-a:hover b{color:var(--ng-2)}

/* author cards grid */
.authors .author{cursor:pointer;text-decoration:none}
.authors .author small{min-height:32px}

/* topic + year grids */
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.topic-card{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);
  padding:18px;display:flex;flex-direction:column;gap:9px;transition:.16s}
.topic-card:hover{transform:translateY(-2px);border-color:#39425B}
.topic-card b{font-size:26px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.topic-card small{color:var(--muted);font-size:12.5px;line-height:1.45}
.topic-card .tag{align-self:flex-start}
.year-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.year-card{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);
  padding:20px;display:flex;flex-direction:column;gap:4px;transition:.16s;text-align:center}
.year-card:hover{transform:translateY(-2px);border-color:#39425B}
.year-card b{font-size:26px;letter-spacing:-.02em}
.year-card span{color:var(--muted);font-size:13px}
.topics a.on{border-color:var(--ng-2);color:var(--text)}

/* more-by block */
.more-by{border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin:26px 0 0;max-width:720px}
.more-by h4{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 12px;font-weight:700}
.more-by a{display:block;padding:9px 0;border-bottom:1px dashed var(--border-soft)}
.more-by a:last-child{border-bottom:0}
.more-by b{font-size:14.5px;display:block;line-height:1.35}
.more-by a:hover b{color:var(--ng-2)}
.more-by small{color:var(--muted);font-size:12.5px}
@media (max-width:900px){ .searchform{display:none} .author-hero-in{flex-direction:column} }

/* ---------- table of contents ---------- */
.toc-nav{display:flex;flex-direction:column;margin-bottom:4px}
.toc-nav a{
  display:block;padding:6px 0 6px 13px;border-left:2px solid var(--border-soft);
  color:var(--muted);font-size:13.5px;line-height:1.4;transition:.15s;
  overflow:hidden;text-overflow:ellipsis;
}
.toc-nav a:hover{color:var(--text);border-left-color:var(--border)}
.toc-nav a.l3{padding-left:26px;font-size:12.8px}
.toc-nav a.on{color:var(--text);border-left-color:var(--ng-2);font-weight:600}
.toc-sep{height:1px;background:var(--border-soft);margin:16px 0}
.toc h4{margin-bottom:10px}
.toc{max-height:calc(100vh - 120px);overflow-y:auto;scrollbar-width:thin}
.toc::-webkit-scrollbar{width:5px}
.toc::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.article-body h1,.article-body h2,.article-body h3{scroll-margin-top:88px}

/* anchor link on hover */
.article-body h2,.article-body h3{position:relative}
.article-body h2[id]:hover::after,.article-body h3[id]:hover::after{
  content:"#";position:absolute;left:-20px;color:var(--ng-2);opacity:.55;font-weight:600}

/* mobile collapsible TOC */
.toc-mobile{display:none;border:1px solid var(--border);background:var(--surface);
  border-radius:var(--radius);padding:14px 16px;margin:0 0 24px}
.toc-mobile summary{cursor:pointer;font-size:13px;font-weight:700;color:var(--text);
  letter-spacing:.06em;text-transform:uppercase;list-style:none}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::before{content:"▸ ";color:var(--ng-2)}
.toc-mobile[open] summary::before{content:"▾ "}
.toc-mobile .toc-nav{margin-top:12px}
@media (max-width:1100px){ .toc-mobile{display:block} }

/* ---------- share buttons ---------- */
.share-row{display:flex;flex-direction:column;gap:7px}
.sharebtn{
  display:flex;align-items:center;gap:10px;font-size:13.5px;font-weight:500;
  color:var(--text-2);border:1px solid var(--border);background:var(--surface);
  border-radius:9px;padding:9px 12px;transition:.15s;cursor:pointer;font-family:var(--font);
  text-align:left;width:100%;
}
.sharebtn svg{flex:none;opacity:.85}
.sharebtn:hover{color:var(--text);border-color:var(--ng-3);transform:translateX(2px)}
.sharebtn.copy.done{color:#3FC7A8;border-color:rgba(63,199,168,.5)}
.sharebtn.copy.done svg{opacity:1}

/* inline share strip under the article */
.share-inline{
  margin:30px 0 6px;padding:18px 20px;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--surface-2);max-width:720px;
}
.share-inline h4{
  font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  margin:0 0 12px;font-weight:700;
}
.share-inline .share-row{flex-direction:row;flex-wrap:wrap;gap:8px}
.share-inline .sharebtn{width:auto;background:var(--surface)}
.share-inline .sharebtn:hover{transform:translateY(-1px)}

/* toast */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,14px);
  background:var(--grad);color:#fff;font-size:13.5px;font-weight:600;
  padding:10px 18px;border-radius:999px;box-shadow:0 10px 30px -10px rgba(242,0,137,.8);
  opacity:0;pointer-events:none;transition:.22s;z-index:120;
}
.toast.on{opacity:1;transform:translate(-50%,0)}
@media (max-width:640px){ .share-inline .sharebtn span{font-size:13px} }


/* ---------- floating share dock ---------- */
:root{
  /* light theme: white card lifted off the page with a strong shadow + tinted buttons */
  --dock-bg:#FFFFFF; --dock-border:#CFD7E8; --dock-btn:#EEF1F9; --dock-btn-hover:#E1E7F5;
  --dock-shadow:0 14px 40px -8px rgba(16,24,40,.34), 0 3px 10px rgba(16,24,40,.10);
}
/* dark theme (default + explicit): noticeably lighter than the page */
:root:not([data-theme="light"]){
  --dock-bg:#283044; --dock-border:#454F6B; --dock-btn:#39435F; --dock-btn-hover:#485475;
  --dock-shadow:0 14px 42px -6px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.05);
}
:root[data-theme="dark"]{
  --dock-bg:#283044; --dock-border:#454F6B; --dock-btn:#39435F; --dock-btn-hover:#485475;
  --dock-shadow:0 14px 42px -6px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.05);
}
.share-dock{
  position:fixed;bottom:20px;z-index:70;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .22s ease,transform .22s ease;
}
.share-dock.on{opacity:1;transform:translateY(0);pointer-events:auto}
.share-dock-in{
  display:flex;align-items:center;gap:10px;
  background:var(--dock-bg);
  border:1px solid var(--dock-border);border-radius:16px;
  padding:10px 14px;box-shadow:var(--dock-shadow);
}
.share-dock-in::before{
  content:"";position:absolute;inset:-1px;border-radius:16px;padding:1px;
  background:var(--grad);opacity:.5;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.share-dock-in{position:relative}
.dock-label{
  font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);padding-right:4px;flex:none;
}
.share-dock .share-row{
  flex-direction:row;flex-wrap:nowrap;gap:8px;flex:1;
  justify-content:center;overflow:visible;
}
.share-dock .sharebtn{
  width:40px;height:40px;padding:0;flex:none;justify-content:center;
  background:var(--dock-btn);border:1px solid transparent;border-radius:11px;
  color:var(--text);position:relative;transition:.16s;
}
.share-dock .sharebtn svg{width:17px;height:17px;opacity:1}
.share-dock .sharebtn:hover{background:var(--dock-btn-hover);transform:translateY(-2px);border-color:var(--ng-3)}
.share-dock .sharebtn.copy.done{background:rgba(63,199,168,.18);color:#3FC7A8;border-color:rgba(63,199,168,.55)}

/* tooltips for icon-only buttons */
.share-dock .sharebtn[data-tip]::after{
  content:attr(data-tip);position:absolute;bottom:calc(100% + 9px);left:50%;transform:translateX(-50%) translateY(4px);
  background:var(--bg-elev);color:var(--text);border:1px solid var(--border);
  font-size:11.5px;font-weight:600;white-space:nowrap;padding:5px 9px;border-radius:7px;
  opacity:0;pointer-events:none;transition:.15s;box-shadow:0 6px 18px -8px rgba(0,0,0,.5);
}
.share-dock .sharebtn[data-tip]:hover::after{opacity:1;transform:translateX(-50%) translateY(0)}

.dock-top{
  flex:none;width:40px;height:40px;border-radius:11px;border:1px solid transparent;
  background:var(--dock-btn);color:var(--text);display:grid;place-items:center;transition:.16s;
}
.dock-top:hover{background:var(--dock-btn-hover);border-color:var(--ng-3);transform:translateY(-2px)}
.dock-top svg{width:17px;height:17px}

@media (max-width:900px){
  .share-dock{left:12px!important;right:12px!important;width:auto!important;bottom:12px}
  .dock-label{display:none}
  .share-dock .sharebtn span{display:none}
  .share-dock .share-row{justify-content:space-between;gap:6px}
  .share-dock .sharebtn,.dock-top{width:42px;height:42px}
}

/* ---------- real cover images ---------- */
.cover-wide.has-img{padding:0;margin:0;border:1px solid var(--border);overflow:hidden;height:auto;background:none;display:block}
.cover-wide.has-img img{width:100%;height:auto;display:block}
.thumb.has-img{padding:0;overflow:hidden;background:none}
.thumb.has-img img{width:100%;height:100%;object-fit:cover;display:block}

/* visually-hidden caption (kept for screen readers / SEO context) */
.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}

/* hero artwork */
.hero-visual.has-img{display:block;padding:0;background:none;position:relative}
.hero-visual.has-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}