/* رنگ‌ها: روشن و صنعتی */
:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --surface-2:#f0f3f8;
  --line:#e4e9f2;
  --text:#1f2a37;
  --muted:#6b7280;
  --primary:#2f4b6e;  /* آبی فولادی */
  --primary-2:#3b6a96;/* آبی صنعتی روشن‌تر */
  --accent:#00a8c6;   /* فیروزه‌ای صنعتی */
  --accent-2:#42c6cf;
  --shadow:rgba(15, 23, 42, 0.08);
  --ring:rgba(0,168,198,0.25);
  --success:#17a673;
  --danger:#e03b3b;
}

/* Reset های پایه */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font:16px/1.8 "Vazirmatn", "IRANSans", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;border-radius:12px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1200px;margin-inline:auto;padding:0 20px}
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-40{margin-top:40px}

/* دسترسی‌پذیری */
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:static;width:auto;height:auto;background:var(--accent);color:#fff;padding:8px 12px;border-radius:8px}

/* هدر و منو */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,0.85);
  backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px}
.brand-text{font-weight:800;font-size:18px;color:var(--primary)}
.tagline{font-size:14px;color:var(--muted);padding:6px 0 10px}

.main-nav .nav-toggle{
  display:none;background:transparent;border:0;padding:8px;border-radius:8px;cursor:pointer
}
.nav-toggle .bar{display:block;width:22px;height:2px;background:var(--primary);margin:5px 0;border-radius:2px}
.menu{display:flex;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.menu a{
  display:inline-block;padding:10px 14px;border-radius:10px;color:var(--text);font-weight:600;
  position:relative
}
.menu a::after{
  content:"";position:absolute;inset-inline:10px;bottom:6px;height:3px;border-radius:3px;background:transparent;transition:background .2s ease
}
.menu a:hover::after{background:linear-gradient(90deg, var(--accent), var(--accent-2))}
.menu a.active{background:var(--surface-2);box-shadow:0 6px 18px var(--shadow)}
.btn{display:inline-block;border:1px solid transparent;cursor:pointer;padding:10px 16px;border-radius:12px;font-weight:700;transition:all .2s ease}
.btn-cta{background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#fff}
.btn-cta:hover{filter:brightness(1.05)}
.btn-primary{background:linear-gradient(135deg, var(--primary-2), var(--primary));color:#fff;box-shadow:0 8px 26px var(--shadow)}
.btn-primary:hover{filter:brightness(1.05)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--primary)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* هیرو */
.hero.light{background:linear-gradient(180deg, var(--surface), var(--surface-2))}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center;padding:24px 0}
.hero-copy h1{margin:0 0 10px;font-size:30px;color:var(--primary)}
.hero-copy p{color:var(--muted);max-width:700px}
.hero-ctas{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
.hero-points{list-style:none;padding:0;margin:14px 0 0;display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:8px;color:var(--text)}
.hero-points li{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 10px}

/* بخش‌ها و کارت‌ها */
.section-header{text-align:center;margin:34px 0 10px}
.section-header p{color:var(--muted)}
.cards{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
  box-shadow:0 10px 24px var(--shadow);
  transition:transform .18s ease, box-shadow .18s ease
}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 32px var(--shadow)}
.card h2,.card h3{margin:12px 0 6px;color:var(--primary)}
.card.service img{aspect-ratio: 4/3;object-fit:cover}
.card.accent{background:linear-gradient(180deg, #e7f7fb, #ffffff);border-color:#d7eef3}

/* نوار دعوت به اقدام */
.cta-band{
  background:linear-gradient(90deg, #eaf3fb, #f8fdff);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin-top:34px;
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 0;flex-wrap:wrap}
.cta-band h2{margin:0;color:var(--primary)}

/* بنر/اطلاعات */
.info-band{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px;
  box-shadow:0 8px 24px var(--shadow)
}
.band-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}

/* لیست‌ها */
.checklist{list-style:none;margin:0;padding:0}
.checklist li{position:relative;padding-right:28px;margin:8px 0}
.checklist li::before{
  content:"";position:absolute;right:0;top:7px;width:16px;height:16px;border-radius:4px;
  background:linear-gradient(135deg, var(--accent), var(--accent-2))
}
.dot-list{padding-right:18px}
.dot-list li{margin:6px 0}
.num-list{padding-right:18px}
.num-list li{margin:6px 0}

/* فرم‌ها */
.form label{display:block;margin:10px 0}
input,textarea,select{
  width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--text);outline:none
}
input:focus,textarea:focus{box-shadow:0 0 0 3px var(--ring);border-color:transparent}
.form-note{color:var(--muted);font-size:.9rem}

/* گالری */
.gallery .grid-4{display:grid;grid