/* لندینگ عمومی شرکت مهندسی استیمان گستر پویا */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --lp-font: 'IRANSans', Tahoma, Arial, sans-serif;
  --lp-navy: #0b1a2e;
  --lp-navy-2: #132942;
  --lp-steel: #1e3a5f;
  --lp-cyan: #38bdf8;
  --lp-ice: #e8f1f8;
  --lp-muted: rgba(232, 241, 248, 0.72);
  --lp-text: #0f172a;
  --lp-text-soft: #475569;
  --lp-line: rgba(255, 255, 255, 0.14);
  --lp-max: 1120px;
}

html { scroll-behavior: smooth; }

body.lp {
  font-family: var(--lp-font);
  font-size: 15px;
  line-height: 1.7;
  color: var(--lp-text);
  background: #f4f7fb;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }

/* —— ناو —— */
.lp-nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  transition: background .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
}
.lp-nav.is-solid {
  background: rgba(11, 26, 46, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 28px rgba(8, 18, 40, 0.28);
}
.lp-nav-inner {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.lp-nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  min-width: 0;
}
.lp-nav-mark {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: linear-gradient(145deg, #38bdf8, #2563eb);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22);
  flex-shrink: 0;
}
.lp-nav-name {
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lp-nav-links {
  display: flex;
  gap: 16px;
  margin-inline-start: auto;
}
.lp-nav-links a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  transition: color .2s;
}
.lp-nav-links a:hover { color: #fff; }

/* —— دکمه‌ها —— */
.lp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.lp-btn:hover { transform: translateY(-1px); }
.lp-btn--primary {
  background: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
  color: #fff;
  box-shadow: 0 10px 28px rgba(14, 165, 233, 0.28);
}
.lp-btn--primary:hover { box-shadow: 0 14px 34px rgba(14, 165, 233, 0.38); }
.lp-btn--ghost {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}
.lp-btn--ghost:hover { background: rgba(255, 255, 255, 0.14); }
.lp-btn--nav {
  min-height: 36px;
  padding: 0 14px;
  font-size: 12px;
  background: #fff;
  color: var(--lp-navy);
  flex-shrink: 0;
}
.lp-btn--nav:hover { box-shadow: 0 6px 18px rgba(255, 255, 255, 0.18); }

/* —— هیرو —— */
.lp-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}
.lp-hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.04);
  animation: lpHeroDrift 18s ease-in-out infinite alternate;
}
@keyframes lpHeroDrift {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.08) translate3d(-1.2%, -0.8%, 0); }
}
.lp-hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 18, 40, 0.55) 0%, rgba(8, 18, 40, 0.18) 38%, rgba(8, 18, 40, 0.78) 100%),
    linear-gradient(115deg, rgba(11, 26, 46, 0.72) 0%, transparent 55%);
  z-index: 1;
}
.lp-hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--lp-max);
  width: 100%;
  margin: 0 auto;
  padding: 120px 22px 72px;
}
.lp-hero-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--lp-cyan);
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 999px;
  padding: 6px 12px;
  margin-bottom: 16px;
  opacity: 0;
  animation: lpFadeUp .7s ease .15s forwards;
}
.lp-hero-title {
  font-size: clamp(26px, 4.6vw, 44px);
  line-height: 1.25;
  font-weight: 800;
  max-width: 16ch;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  opacity: 0;
  animation: lpFadeUp .75s ease .28s forwards;
}
.lp-hero-lead {
  margin-top: 14px;
  max-width: 42ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--lp-muted);
  opacity: 0;
  animation: lpFadeUp .75s ease .42s forwards;
}
.lp-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
  opacity: 0;
  animation: lpFadeUp .75s ease .55s forwards;
}
@keyframes lpFadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* —— نوار اعتماد —— */
.lp-strip {
  background: var(--lp-navy-2);
  border-block: 1px solid var(--lp-line);
}
.lp-strip-inner {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 16px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 18px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 12.5px;
  font-weight: 700;
}
.lp-strip-inner i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lp-cyan);
  opacity: 0.7;
}

/* —— سکشن‌ها —— */
.lp-section {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 72px 22px;
}
.lp-section-head {
  margin-bottom: 28px;
  max-width: 46ch;
}
.lp-section-head h2,
.lp-section-copy h2,
.lp-portal-copy h2 {
  font-size: clamp(22px, 3vw, 30px);
  color: var(--lp-navy);
  margin-bottom: 10px;
}
.lp-section-head p,
.lp-section-copy p,
.lp-cap-body p,
.lp-portal-copy p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--lp-text-soft);
}
.lp-section-copy p + p { margin-top: 10px; }

.lp-section-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 36px;
  align-items: center;
}
.lp-photo {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 24px 50px rgba(15, 35, 75, 0.16);
  background: #0b1a2e;
}
.lp-photo img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.lp-cap-list { display: grid; gap: 28px; }
.lp-cap {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 28px;
  align-items: center;
}
.lp-cap--flip .lp-cap-media { order: 2; }
.lp-cap--flip .lp-cap-body { order: 1; }
.lp-cap-media {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(15, 35, 75, 0.14);
  background: #0b1a2e;
}
.lp-cap-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.lp-cap-body h3 {
  font-size: 18px;
  color: var(--lp-navy);
  margin-bottom: 8px;
}

.lp-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease;
}
.lp-reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* —— سامانه —— */
.lp-portal {
  padding-bottom: 88px;
}
.lp-portal-panel {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  padding: 36px 32px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 12% 20%, rgba(56, 189, 248, 0.16), transparent 40%),
    linear-gradient(145deg, #0f2338 0%, #16324f 55%, #0b1a2e 100%);
  color: #fff;
  box-shadow: 0 28px 60px rgba(11, 26, 46, 0.28);
}
.lp-portal-copy h2 { color: #fff; }
.lp-portal-copy p {
  color: rgba(232, 241, 248, 0.78);
  margin-bottom: 20px;
  max-width: 42ch;
}
.lp-portal-points {
  list-style: none;
  display: grid;
  gap: 10px;
  align-content: center;
}
.lp-portal-points li {
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
  font-weight: 700;
}

/* —— فوتر —— */
.lp-footer {
  background: #081222;
  color: rgba(232, 241, 248, 0.72);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.lp-footer-inner {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 28px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.lp-footer strong {
  display: block;
  color: #fff;
  font-size: 13px;
  margin-bottom: 4px;
}
.lp-footer p { font-size: 11.5px; }
.lp-footer-login {
  color: var(--lp-cyan);
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
}
.lp-footer-login:hover { text-decoration: underline; }

@media (max-width: 900px) {
  .lp-nav-links { display: none; }
  .lp-section-grid,
  .lp-cap,
  .lp-cap--flip,
  .lp-portal-panel {
    grid-template-columns: 1fr;
  }
  .lp-cap--flip .lp-cap-media,
  .lp-cap--flip .lp-cap-body { order: initial; }
  .lp-hero-content { padding: 110px 18px 56px; }
  .lp-section { padding: 56px 18px; }
}

@media (max-width: 560px) {
  .lp-nav-name { font-size: 11px; max-width: 46vw; }
  .lp-hero-lead { font-size: 13.5px; }
  .lp-btn { width: 100%; }
  .lp-hero-cta { width: 100%; }
  .lp-portal-panel { padding: 26px 18px; }
}