/* ============================================================
   EDGEBOUND LABS — /blog.html  ·  Lab Report editorial blog
   Light editorial tone: Newsreader display · Raleway body · JetBrains Mono labels.
   Reuses shared tokens + .sec/.lt, .eyebrow, .btn, .reveal.
   All blog-specific components prefixed bl-.
   ============================================================ */

/* ===== HERO (light editorial) ===== */
.bl-hero{position:relative;padding-top:150px;padding-bottom:76px;background:#FAFAF8;border-bottom:1px solid var(--lt-line);overflow:hidden}
.bl-hero-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(17,18,23,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(17,18,23,.035) 1px,transparent 1px);
  background-size:62px 62px;
  mask-image:radial-gradient(ellipse 65% 68% at 22% 36%,#000 18%,transparent 68%);
  -webkit-mask-image:radial-gradient(ellipse 65% 68% at 22% 36%,#000 18%,transparent 68%)}
.bl-hero-in{position:relative;z-index:2;max-width:660px}
.bl-hero .eyebrow{color:var(--blue);margin-bottom:20px}
.bl-hero .eyebrow::before{background:var(--blue)}
.bl-h1{font-family:'Newsreader',Georgia,serif;font-weight:500;font-size:clamp(44px,6.8vw,82px);letter-spacing:-.022em;line-height:1.04;color:#16171C;margin-bottom:22px}
.bl-h1 em{font-style:italic;color:var(--blue)}
.bl-hero-sub{font-size:clamp(16px,1.75vw,18px);line-height:1.75;color:var(--lt-2);max-width:52ch;margin-bottom:34px}
.bl-chips{display:flex;flex-wrap:wrap;gap:8px}
.bl-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border:1px solid rgba(17,18,23,.1);border-radius:100px;background:#fff;font-size:13px;font-weight:600;color:var(--lt-2);box-shadow:0 1px 2px rgba(17,18,23,.04)}
.bl-chip b{font-family:var(--mono);color:var(--blue);font-weight:500}
.bl-chip .sep{width:1px;height:12px;background:rgba(17,18,23,.12)}

/* ===== FILTER BAR ===== */
.bl-filters{background:#fff;border-bottom:1px solid var(--lt-line);position:sticky;top:68px;z-index:50}
.bl-filter-in{display:flex;gap:6px;flex-wrap:wrap;align-items:center;padding:12px 0}
.bl-pill{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.02em;padding:7px 14px;border-radius:100px;border:1px solid var(--lt-line);background:transparent;color:var(--lt-3);cursor:pointer;transition:.2s var(--ease);white-space:nowrap}
.bl-pill:hover{color:var(--lt-ink);border-color:var(--lt-line2)}
.bl-pill.on{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ===== MAIN ===== */
.bl-main{background:#FAFAF8;padding:68px 0 96px}
.bl-inner{display:grid;grid-template-columns:1fr 348px;gap:68px;align-items:start}

/* thumbnail color themes */
.bl-c-aic {background:linear-gradient(135deg,#110d24,#2d235c,#5046E5)}
.bl-c-mach{background:linear-gradient(135deg,#0b1220,#162544,#1b5ca0)}
.bl-c-ais {background:linear-gradient(135deg,#0f1326,#1c2d5e,#3655cc)}
.bl-c-aip {background:linear-gradient(135deg,#081718,#0d3535,#0a6e6e)}
.bl-c-lab {background:linear-gradient(135deg,#100d20,#261757,#6435d4)}
.bl-c-vibe{background:linear-gradient(135deg,#180f04,#3d2208,#b06518)}
.bl-c-ind {background:linear-gradient(135deg,#10111a,#20222e,#3a3d50)}
.bl-thumb-pat{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:28px 28px}
.bl-thumb-tag{position:relative;z-index:2;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.45);text-align:center}

/* ---- Featured ---- */
.bl-featured{padding-bottom:48px;border-bottom:1px solid var(--lt-line);margin-bottom:44px}
.bl-feat-img-a{display:block;border-radius:18px;overflow:hidden;aspect-ratio:16/9;position:relative;text-decoration:none;transition:box-shadow .3s var(--ease)}
.bl-feat-img-a:hover{box-shadow:0 12px 40px rgba(80,70,229,.18)}
.bl-feat-img-inner{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.bl-feat-tag{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--blue);margin:20px 0 14px}
.bl-feat-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.bl-feat-badge{font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.04em;text-transform:uppercase;color:#fff;background:var(--blue);padding:3px 10px;border-radius:100px;margin-left:8px}
.bl-feat-a{text-decoration:none}
.bl-feat-title{font-family:'Newsreader',Georgia,serif;font-weight:600;font-size:clamp(24px,2.8vw,32px);letter-spacing:-.02em;line-height:1.2;color:var(--lt-ink);margin-bottom:14px;transition:color .25s}
.bl-feat-a:hover .bl-feat-title{color:var(--blue)}
.bl-feat-excerpt{font-size:16px;line-height:1.75;color:var(--lt-2);margin-bottom:20px}
.bl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px;color:var(--lt-3)}
.bl-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--lt-line2)}
.bl-read{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--blue);margin-top:18px;text-decoration:none;transition:gap .2s var(--ease)}
.bl-read:hover{gap:12px}

/* ---- Article list ---- */
.bl-list-lbl{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--lt-3);margin-bottom:4px;padding-bottom:14px;border-bottom:1px solid var(--lt-line)}
.bl-article{display:grid;grid-template-columns:190px 1fr;gap:22px;align-items:start;padding:26px 0;border-bottom:1px solid var(--lt-line);text-decoration:none;transition:.2s var(--ease)}
.bl-article-thumb-w{border-radius:12px;overflow:hidden;aspect-ratio:16/10;position:relative}
.bl-thumb{position:absolute;inset:0;transition:transform .4s var(--ease)}
.bl-article:hover .bl-thumb{transform:scale(1.04)}
.bl-article-cat{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--blue);margin-bottom:8px}
.bl-article-cat::before{content:"";width:5px;height:5px;border-radius:50%;background:currentColor}
.bl-article-title{font-family:'Newsreader',Georgia,serif;font-weight:600;font-size:18px;letter-spacing:-.015em;line-height:1.28;color:var(--lt-ink);margin-bottom:8px;transition:color .25s}
.bl-article:hover .bl-article-title{color:var(--blue)}
.bl-article-excerpt{font-size:13.5px;line-height:1.65;color:var(--lt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.bl-article-meta{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:10.5px;color:var(--lt-3)}
.bl-article-meta .dot{width:2px;height:2px;border-radius:50%;background:var(--lt-line2)}

/* ---- Sidebar ---- */
.bl-sidebar{position:sticky;top:calc(68px + 54px);display:flex;flex-direction:column;gap:18px}
.bl-s-card{background:var(--lt-card);border:1px solid var(--lt-line);border-radius:16px;padding:24px 22px}
.bl-s-label{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--lt-3);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--lt-line)}
.bl-topics{list-style:none;display:flex;flex-direction:column}
.bl-topic{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--lt-line);cursor:pointer;transition:.2s var(--ease)}
.bl-topic:last-child{border-bottom:none}
.bl-topic:hover .bl-topic-name{color:var(--blue)}
.bl-topic-name{font-size:14px;font-weight:600;color:var(--lt-ink);transition:color .2s}
.bl-topic-n{font-family:var(--mono);font-size:11px;color:var(--lt-3);background:var(--lt-surface);padding:3px 9px;border-radius:100px}
.bl-minis{display:flex;flex-direction:column;gap:14px}
.bl-mini{display:flex;gap:13px;align-items:flex-start;text-decoration:none;transition:.2s}
.bl-mini:hover .bl-mini-title{color:var(--blue)}
.bl-mini-thumb{width:62px;height:42px;border-radius:8px;overflow:hidden;flex-shrink:0;position:relative}
.bl-mini-thumb .bl-thumb{position:absolute;inset:0}
.bl-mini-title{font-size:13px;font-weight:600;line-height:1.35;color:var(--lt-ink);transition:color .2s;margin-bottom:4px}
.bl-mini-meta{font-family:var(--mono);font-size:10px;color:var(--lt-3)}

/* ===== NEWSLETTER (dark) ===== */
.bl-newsletter{background:var(--bg);padding:96px 0;position:relative;overflow:hidden}
.bl-nl-glow{position:absolute;top:-20%;left:50%;transform:translateX(-50%);width:660px;height:440px;background:radial-gradient(ellipse at center,rgba(80,70,229,.22),rgba(80,70,229,.04) 46%,transparent 68%);filter:blur(18px);pointer-events:none}
.bl-nl-grid{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 74%);-webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 74%)}
.bl-nl-in{position:relative;z-index:2;text-align:center;max-width:520px;margin:0 auto}
.bl-nl-eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-bright);margin-bottom:18px;display:flex;align-items:center;justify-content:center;gap:10px}
.bl-nl-eyebrow::before,.bl-nl-eyebrow::after{content:"";width:22px;height:1px;background:var(--blue-bright)}
.bl-nl-h2{font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.035em;line-height:1.1;color:var(--t1);margin-bottom:14px}
.bl-nl-h2 em{font-style:normal;color:var(--blue-bright)}
.bl-nl-sub{font-size:16px;line-height:1.7;color:var(--t2);margin-bottom:32px}
.bl-nl-form{display:flex;gap:10px;max-width:420px;margin:0 auto 16px}
.bl-nl-input{flex:1;background:rgba(255,255,255,.06);border:1px solid var(--line-2);border-radius:10px;padding:13px 17px;color:var(--t1);font-family:var(--sans);font-size:15px;outline:none;transition:.2s}
.bl-nl-input::placeholder{color:var(--t3)}
.bl-nl-input:focus{border-color:var(--blue-bright);background:rgba(255,255,255,.09)}
.bl-nl-note{font-family:var(--mono);font-size:11px;color:var(--t3);letter-spacing:.02em}

/* ===== RESPONSIVE ===== */
@media(max-width:960px){
  .bl-inner{grid-template-columns:1fr;gap:48px}
  .bl-sidebar{display:none}
}
@media(max-width:640px){
  .bl-article{grid-template-columns:1fr;gap:14px}
  .bl-article-thumb-w{aspect-ratio:16/8}
  .bl-filter-in{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .bl-nl-form{flex-direction:column}
}

img.bl-thumb{width:100%;height:100%;object-fit:cover}

.bl-feat-img-a .bl-feat-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.bl-feat-img-a:hover .bl-feat-photo{transform:scale(1.03)}