/* Massin Systems — AI Guides. Original stylesheet. */
:root{
  --blue:#0099DC; --blue-dark:#007bb0; --dark:#262626; --ink:#374151;
  --muted:#6b7280; --line:#e5e7eb; --bg:#ffffff; --bg-soft:#f6f9fb;
  --lime:#8DD608; --orange:#EF8C03;
  --radius:14px; --maxw:1080px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16.5px}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--dark);font-size:1.1rem;text-decoration:none}
.brand img{height:36px;width:auto}
.brand:hover{text-decoration:none}
.nav-links{display:flex;align-items:center;gap:26px;list-style:none}
.nav-links a{color:var(--ink);font-weight:500;font-size:.95rem}
.nav-links a.active{color:var(--blue);font-weight:700}
.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:700;font-size:.95rem;border:2px solid transparent;cursor:pointer;transition:.18s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);text-decoration:none;transform:translateY(-1px)}
.btn-ghost{border-color:var(--dark);color:var(--dark)}
.btn-ghost:hover{background:var(--dark);color:#fff;text-decoration:none}
.btn-light{background:#fff;color:var(--dark)}
.btn-light:hover{text-decoration:none;transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:0;font-size:1.6rem;color:var(--dark)}

/* Hero */
.eyebrow{display:inline-block;color:var(--blue);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem;margin-bottom:12px}
.hero{padding:84px 0 56px}
.hero h1{font-size:clamp(2.2rem,5.5vw,3.6rem);line-height:1.12;color:var(--dark);font-weight:800;letter-spacing:-.02em}
.hero .lede{max-width:640px;margin:20px 0 30px;font-size:1.15rem;color:var(--muted)}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.hero-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.hero-card p{color:var(--muted);font-size:.95rem}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:44px 0}
.stat b{display:block;font-size:2rem;color:var(--dark)}
.stat span{color:var(--muted);font-size:.92rem}

/* Sections */
section{padding:56px 0}
.section-soft{background:var(--bg-soft)}
h2{font-size:clamp(1.6rem,3.5vw,2.2rem);color:var(--dark);font-weight:800;letter-spacing:-.01em;margin-bottom:12px}
.section-sub{color:var(--muted);max-width:620px;margin-bottom:32px}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.gcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:10px;transition:.18s;position:relative}
.gcard:hover{border-color:var(--blue);box-shadow:0 10px 30px rgba(0,153,220,.10);transform:translateY(-3px)}
.gcard .emoji{font-size:1.7rem}
.gcard h3{font-size:1.06rem;color:var(--dark);line-height:1.35}
.gcard p{color:var(--muted);font-size:.92rem;flex:1}
.gcard a.stretch::after{content:"";position:absolute;inset:0}
.tagrow{display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:.72rem;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--bg-soft);color:var(--ink);border:1px solid var(--line)}
.tag.tool{background:rgba(0,153,220,.08);color:var(--blue-dark);border-color:rgba(0,153,220,.25)}

/* Filters */
.filters{display:flex;flex-direction:column;gap:14px;margin-bottom:30px}
.filter-label{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.chiprow{display:flex;gap:10px;flex-wrap:wrap}
.chip{padding:8px 16px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--ink);font-weight:600;font-size:.88rem;cursor:pointer;transition:.15s;font-family:var(--font)}
.chip:hover{border-color:var(--blue)}
.chip.on{background:var(--dark);border-color:var(--dark);color:#fff}
.empty-state{padding:44px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius)}

/* CTA band */
.cta-band{background:var(--dark);color:#fff;border-radius:20px;padding:44px 36px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.cta-band h2{color:#fff;margin:0}
.cta-band p{color:rgba(255,255,255,.85);margin-top:6px}

/* Guide article */
.article{max-width:760px;margin:0 auto;padding:56px 20px}
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:18px}
.article h1{font-size:clamp(1.8rem,4.5vw,2.6rem);color:var(--dark);font-weight:800;line-height:1.15;margin:10px 0 16px;letter-spacing:-.015em}
.article .intro{font-size:1.12rem;color:var(--muted);margin-bottom:34px}
.article h2{font-size:1.45rem;margin:40px 0 12px}
.article h3{font-size:1.1rem;color:var(--dark);margin:24px 0 8px}
.article p{margin-bottom:14px}
.article ol,.article ul{margin:0 0 16px 22px}
.article li{margin-bottom:10px}
.promptbox{overflow-x:auto;background:var(--dark);color:#e7eef3;border-radius:var(--radius);padding:20px 22px;margin:18px 0;position:relative;font-size:.93rem;white-space:pre-wrap;font-family:ui-monospace,'Cascadia Code',Menlo,monospace}
.promptbox .copybtn{position:absolute;top:12px;right:12px;background:var(--blue);color:#fff;border:0;border-radius:8px;padding:6px 12px;font-weight:700;font-size:.78rem;cursor:pointer;font-family:var(--font)}
.promptbox .copybtn:hover{background:var(--blue-dark)}
.tipbox{border-left:4px solid var(--lime);background:var(--bg-soft);padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;margin:18px 0}
.warnbox{border-left:4px solid var(--orange);background:#fff8ef;padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;margin:18px 0}
.guide-cta{margin-top:48px}

/* Forms */
.form-grid{display:grid;gap:16px;max-width:560px}
label{font-weight:600;color:var(--dark);font-size:.92rem}
input,textarea,select{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-family:var(--font);font-size:1rem;margin-top:6px}
input:focus,textarea:focus{outline:none;border-color:var(--blue)}
.contact-cols{display:grid;grid-template-columns:1.1fr .9fr;gap:48px}
.contact-item{display:flex;gap:12px;margin-bottom:18px;align-items:flex-start}
.contact-item .ico{font-size:1.3rem}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:36px 0;margin-top:40px;color:var(--muted);font-size:.9rem}
.footer-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;align-items:center}
.footer-links{display:flex;gap:18px;list-style:none}
.footer-links a{color:var(--muted)}

@media(max-width:820px){
  .hero-grid,.contact-cols{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(3,1fr)}
  .nav-links{position:fixed;inset:68px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:20px;display:none}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
}
@media(max-width:520px){
  .stats{grid-template-columns:1fr 1fr}
  .cta-band{padding:32px 24px}
}