:root{--bg:#f5f7fb;--ink:#0f172a;--mute:#5b6678;--line:#e3e8f0;--brand:#0ea5a4;--brand-d:#0b7f7e;--navy:#0a1220;--navy2:#111c33;--acc:#f59e0b;--card:#fff;--r:14px;--sh:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter','Hind Siliguri',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:var(--brand-d);text-decoration:none}a:hover{color:var(--brand)}
.wrap{width:min(1180px,92%);margin:0 auto}.narrow{width:min(820px,92%);margin:0 auto}.center{text-align:center}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--hdr,rgba(10,18,32,.92));backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.hdr{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:600;font-size:1.25rem;letter-spacing:-.3px}.logo b{color:var(--brand)}.logo:hover{color:#fff}
.logo-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--brand),#0b7f7e);color:#fff}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:#cbd5e1;padding:8px 14px;border-radius:8px;font-size:.95rem;font-weight:500;transition:.15s}
.nav a:hover,.nav a.on{color:#fff;background:rgba(255,255,255,.08)}
.nav .shop-btn{background:var(--acc);color:#1b1200;font-weight:700;margin-left:8px}.nav .shop-btn:hover{background:#fbbf24;color:#1b1200}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}.burger span{display:block;width:24px;height:2px;background:var(--card);margin:5px 0;transition:.2s}
/* buttons */
.btn{display:inline-block;background:var(--brand);color:var(--btn-text,#fff);border:0;padding:12px 24px;border-radius:10px;font:600 .95rem 'Inter',sans-serif;cursor:pointer;transition:.15s}
.btn:hover{background:var(--brand-d);color:#fff;transform:translateY(-1px)}
.btn.ghost{background:transparent;border:1.5px solid rgba(255,255,255,.35)}.btn.ghost:hover{background:rgba(255,255,255,.1)}
.btn.ghost-d{background:transparent;color:var(--ink);border:1.5px solid var(--line)}.btn.ghost-d:hover{background:var(--card);color:var(--ink)}
.btn.light{background:#fff;color:var(--navy)}.btn.light:hover{background:#f1f5f9;color:var(--navy)}
/* hero */
.hero{background:radial-gradient(900px 400px at 85% 10%,rgba(14,165,164,.28),transparent),linear-gradient(180deg,var(--navy),var(--navy2));color:#fff;padding:84px 0 72px;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.pill{display:inline-block;padding:6px 14px;border:1px solid rgba(14,165,164,.5);color:#5eead4;border-radius:99px;font-size:.8rem;font-weight:600;letter-spacing:.5px;text-transform:uppercase}
.hero h1{font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.12;margin:18px 0;letter-spacing:-1px;font-weight:800}
.hero p{color:#aab6c8;font-size:1.1rem;max-width:540px}.cta{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 36px}
.stats{display:flex;gap:36px}.stats b{display:block;font-size:1.8rem;color:#fff}.stats span{color:#8d9bb0;font-size:.85rem}
.hero-art{display:none}.hero-art .chip{fill:rgba(14,165,164,.12)}.hero-art .dot{fill:currentColor}
/* sections */
.sec{padding:72px 0}.sec.alt{background:var(--card);border-block:1px solid var(--line)}
.sec-h{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:30px;gap:16px}
.sec-h h2{margin:2px 0 0;font-size:1.9rem;letter-spacing:-.5px}.eyebrow{color:var(--brand-d);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:1px}
.link{font-weight:600;white-space:nowrap}.empty{color:var(--mute);text-align:center;padding:40px 0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,23,42,.12)}
.card-img{display:block;aspect-ratio:16/10;overflow:hidden;background:#e8eef6}.card-img img{width:100%;height:100%;object-fit:cover;transition:.4s}.card:hover .card-img img{transform:scale(1.05)}
.ph{width:100%;height:100%;display:grid;place-items:center;background:linear-gradient(135deg,#0f2a3d,#0e5f66);color:#7ee7dc;font-weight:700;letter-spacing:2px;text-transform:uppercase;font-size:.9rem}
.card-b{padding:20px;display:flex;flex-direction:column;flex:1}.card h3{margin:8px 0;font-size:1.15rem;line-height:1.35}.card h3 a{color:var(--ink)}.card h3 a:hover{color:var(--brand-d)}
.card p{color:var(--mute);font-size:.93rem;margin:0 0 14px;flex:1}.more{font-weight:600;font-size:.9rem}
.meta{display:flex;gap:12px;align-items:center;color:var(--mute);font-size:.8rem;flex-wrap:wrap}
.tag{background:#e0f7f6;color:var(--brand-d);padding:2px 10px;border-radius:99px;font-weight:600;font-size:.74rem}.tag.warn{background:#fef3c7;color:#92400e}
.band{background:linear-gradient(120deg,var(--brand-d),#0a5d6e);color:#fff;padding:48px 0}.band-in{display:flex;justify-content:space-between;align-items:center;gap:24px}.band h2{margin:0 0 4px}.band p{margin:0;opacity:.85}
.yt{display:flex;justify-content:space-between;align-items:center;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px 34px;box-shadow:var(--sh)}.yt h2{margin:0}.yt p{margin:4px 0 0;color:var(--mute)}
/* inner pages */
.page-hero{background:linear-gradient(180deg,var(--navy),var(--navy2));color:#fff;padding:56px 0 48px}.page-hero h1{margin:0 0 6px;font-size:2.4rem;letter-spacing:-.8px}.page-hero p{margin:0;color:#aab6c8}
.search{display:flex;gap:10px;margin-top:22px;max-width:520px}.search input{flex:1;padding:12px 16px;border-radius:10px;border:0;font:inherit}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}.chip-l{padding:6px 16px;border:1px solid var(--line);background:var(--card);border-radius:99px;color:var(--ink);font-size:.88rem;font-weight:500}.chip-l.on,.chip-l:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.pager{display:flex;gap:6px;justify-content:center;margin-top:40px}.pager a{padding:8px 14px;border:1px solid var(--line);background:var(--card);border-radius:8px;color:var(--ink)}.pager a.on{background:var(--brand);border-color:var(--brand);color:#fff}
/* post */
.post-hero{background:linear-gradient(180deg,var(--navy),var(--navy2));color:#fff;padding:48px 0 40px}.post-hero h1{margin:10px 0 14px;font-size:clamp(1.7rem,3.6vw,2.6rem);line-height:1.2;letter-spacing:-.6px}.post-hero .meta{color:#aab6c8}
.crumb{color:#7ee7dc;font-weight:600;font-size:.9rem}
.post-cover{width:100%;border-radius:var(--r);margin:-24px 0 28px;box-shadow:var(--sh);position:relative;border:4px solid var(--card)}
.prose{font-size:1.05rem}.prose h2,.prose h3{margin:1.8em 0 .5em;letter-spacing:-.3px;line-height:1.3}.prose img{border-radius:10px;margin:18px 0;height:auto}.prose a{text-decoration:underline}
.prose blockquote{border-left:4px solid var(--brand);margin:1.2em 0;padding:4px 18px;background:var(--card);color:var(--mute);border-radius:0 8px 8px 0}
.prose pre,.code pre{background:#0d1526;color:#d6e2f5;padding:18px;border-radius:10px;overflow:auto;font:.86rem/1.6 ui-monospace,Menlo,Consolas,monospace;margin:1em 0}
.prose code{background:#e8eef6;padding:2px 6px;border-radius:5px;font-size:.88em}.prose pre code{background:none;padding:0}
.prose iframe{max-width:100%;border:0;border-radius:10px}.prose table{border-collapse:collapse;width:100%}.prose td,.prose th{border:1px solid var(--line);padding:8px 12px}
.sub{margin:2.2em 0 .8em;font-size:1.35rem}
.video{position:relative;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:#000;box-shadow:var(--sh)}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;border:1px solid var(--line);transition:.2s}.gallery img:hover{transform:scale(1.03)}
.code{border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:14px;overflow:hidden}.code summary{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;cursor:pointer;font-weight:600;font-family:ui-monospace,Menlo,monospace;font-size:.9rem}
.code pre{margin:0;border-radius:0;max-height:520px}.acts{display:flex;gap:10px;align-items:center;font-family:'Inter',sans-serif}.copy{border:1px solid var(--line);background:var(--card);border-radius:6px;padding:4px 12px;cursor:pointer;font:600 .8rem 'Inter'}.copy:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.files{list-style:none;padding:0}.files li{background:var(--card);border:1px solid var(--line);padding:12px 16px;border-radius:10px;margin-bottom:8px}
.tags{margin:30px 0 60px;display:flex;gap:8px;flex-wrap:wrap}.tags a{background:#e8eef6;color:var(--ink);padding:4px 12px;border-radius:99px;font-size:.85rem}
/* about/contact */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:36px 0}.feat div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}.feat h3{margin:0 0 6px}.feat p{margin:0;color:var(--mute);font-size:.93rem}
.contact{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start}
.form label{display:block;font-weight:600;font-size:.88rem;margin-bottom:16px}.form input,.form textarea,.form select{display:block;width:100%;margin-top:6px;padding:11px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:var(--card)}
.form input:focus,.form textarea:focus{outline:2px solid var(--brand);border-color:transparent}.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.hp{position:absolute;left:-9999px}
.info{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh)}.info h3{margin-top:0}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-weight:500}.alert.ok{background:#dcfce7;color:#166534}.alert.bad{background:#fee2e2;color:#991b1b}
/* footer */
.site-footer{background:var(--footer,var(--navy));color:#9fb0c6;padding-top:56px}.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:40px}
.site-footer h4{color:#fff;margin:0 0 14px}.site-footer a,.site-footer span{display:block;color:#9fb0c6;margin-bottom:8px;font-size:.93rem}.site-footer a:hover{color:#5eead4}
.fabout{font-size:.93rem;margin:14px 0}.social{display:flex;gap:14px}.social a{display:inline-block;color:#fff;border:1px solid rgba(255,255,255,.2);padding:4px 12px;border-radius:99px;font-size:.82rem}
.copy{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;font-size:.85rem}
/* responsive */
@media(max-width:900px){.grid,.feat{grid-template-columns:repeat(2,1fr)}.hero-in{grid-template-columns:1fr}.hero-art{display:none}.fgrid{grid-template-columns:1fr 1fr}.contact{grid-template-columns:1fr}}
@media(max-width:720px){.burger{display:block}.nav{position:fixed;top:68px;left:0;right:0;background:var(--navy);flex-direction:column;align-items:stretch;padding:14px;gap:2px;display:none;border-bottom:1px solid rgba(255,255,255,.1)}
.nav-open .nav{display:flex}.nav .shop-btn{margin:6px 0 0;text-align:center}.grid,.feat,.row2{grid-template-columns:1fr}.band-in,.yt{flex-direction:column;text-align:center;align-items:center}.sec{padding:52px 0}.fgrid{grid-template-columns:1fr}.sec-h{align-items:flex-start;flex-direction:column}}