/* ============================================================
   Dialog PTT — main.css
   Fonts loaded via Google Fonts in functions.php
   Variables → Base → Layout → Nav → Hero → Sections → Components
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --dpt-bg:          #0a1622;
  --dpt-bg-mid:      #0d1e30;
  --dpt-surface:     #112233;
  --dpt-surface-2:   #1a2d42;
  --dpt-border:      #1e3450;
  --dpt-accent:      #1a73e8;
  --dpt-accent-h:    #1557b0;
  --dpt-green:       #22c55e;
  --dpt-text:        #e8edf2;
  --dpt-text-muted:  #8fa3b8;
  --dpt-nav-bg:      #2c3e50;
  --dpt-nav-h:       220px;
  --dpt-section-pad: clamp(56px, 8vw, 96px);
  --dpt-radius:      12px;
  --dpt-radius-sm:   8px;
  --dpt-shadow:      0 4px 24px rgba(0,0,0,0.35);
  --dpt-shadow-card: 0 2px 16px rgba(0,0,0,0.25);
  --dpt-font-head:   'Bebas Neue', 'Impact', sans-serif;
  --dpt-font-mono:   'JetBrains Mono', 'Courier New', monospace;
  --dpt-transition:  0.2s ease;
}

/* ── Reset / Base ───────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--dpt-bg);
  color: var(--dpt-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--dpt-accent); text-decoration: none; transition: color var(--dpt-transition); }
a:hover { color: var(--dpt-accent-h); }

ul { list-style: none; }

h1,h2,h3,h4 {
  font-family: var(--dpt-font-head);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

h1 { font-size: clamp(32px, 5vw, 60px); }
h2 { font-size: clamp(26px, 4vw, 46px); }
h3 { font-size: clamp(18px, 2.5vw, 26px); }

p { margin-bottom: 0; }

code {
  font-family: var(--dpt-font-mono);
  font-size: 0.85em;
  background: var(--dpt-surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  color: #7dd3fc;
}

ol { padding-left: 1.5em; }
ol li { margin-bottom: 4px; }

/* ── Layout helpers ─────────────────────────────────────────── */
.dpt-section,
.dpt-section-alt {
  padding: var(--dpt-section-pad) 20px;
}

.dpt-section { background: #fff; color: #111; }
.dpt-section-alt { background: #f4f7fb; color: #111; }

.dpt-section-inner,
.dpt-page-hero-inner,
.dpt-hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}

.dpt-section-sub {
  font-size: 1.1rem;
  color: #4a5568;
  max-width: 680px;
  margin: 12px 0 36px;
  line-height: 1.7;
}

/* ── Eyebrow label ──────────────────────────────────────────── */
.dpt-eyebrow {
  display: inline-block;
  font-family: var(--dpt-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dpt-accent);
  margin-bottom: 10px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.dpt-btn-primary,
.dpt-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--dpt-radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--dpt-transition), transform var(--dpt-transition), color var(--dpt-transition);
  text-decoration: none;
  white-space: nowrap;
}

.dpt-btn-primary {
  background: var(--dpt-accent);
  color: #fff;
}
.dpt-btn-primary:hover {
  background: var(--dpt-accent-h);
  color: #fff;
  transform: translateY(-1px);
}

.dpt-btn-secondary {
  background: transparent;
  color: var(--dpt-text);
  border: 1.5px solid var(--dpt-border);
}
.dpt-btn-secondary:hover {
  border-color: var(--dpt-accent);
  color: var(--dpt-accent);
  transform: translateY(-1px);
}

.dpt-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dpt-accent);
  text-decoration: none;
}
.dpt-link:hover { color: var(--dpt-accent-h); text-decoration: underline; }

/* ── Navigation ─────────────────────────────────────────────── */
.dpt-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--dpt-nav-bg);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow var(--dpt-transition);
}
.dpt-nav.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.dpt-nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

.dpt-nav-logo img {
  height: 36px;
  width: auto;
}
.dpt-nav-logo span {
  font-family: var(--dpt-font-head);
  font-size: 1.4rem;
  letter-spacing: 0.05em;
  color: #fff;
}

.dpt-nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.dpt-nav-menu > li {
  position: relative;
}

.dpt-nav-menu > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--dpt-radius-sm);
  transition: color var(--dpt-transition), background var(--dpt-transition);
}
.dpt-nav-menu > li > a:hover,
.dpt-nav-menu > li.current-menu-item > a {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

/* Dropdown */
.dpt-chevron {
  font-size: 0.7em;
  margin-left: 2px;
  display: inline-block;
  transition: transform var(--dpt-transition);
}
.dpt-has-dropdown > a[aria-expanded="true"] .dpt-chevron {
  transform: rotate(180deg);
}

.dpt-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--dpt-nav-bg);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--dpt-radius-sm);
  padding: 8px 0;
  box-shadow: var(--dpt-shadow);
  z-index: 100;
}
.dpt-has-dropdown:hover .dpt-dropdown,
.dpt-has-dropdown:focus-within .dpt-dropdown {
  display: block;
}
.dpt-dropdown li a {
  display: block;
  padding: 10px 18px;
  color: rgba(255,255,255,0.8);
  font-size: 0.875rem;
  transition: background var(--dpt-transition), color var(--dpt-transition);
}
.dpt-dropdown li a:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}

/* Nav CTA */
.dpt-nav-cta {
  margin-left: 12px;
  padding: 8px 20px !important;
  background: var(--dpt-accent) !important;
  color: #fff !important;
  border-radius: var(--dpt-radius-sm) !important;
}
.dpt-nav-cta:hover {
  background: var(--dpt-accent-h) !important;
}

/* Hamburger */
.dpt-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  background: none;
  border: none;
  margin-left: auto;
  padding: 4px;
}
.dpt-hamburger span {
  display: block;
  height: 2px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.dpt-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.dpt-hamburger.open span:nth-child(2) { opacity: 0; }
.dpt-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Page hero (inner pages) ─────────────────────────────────── */
.dpt-page-hero {
  background: var(--dpt-bg);
  padding: calc(64px + 56px) 20px 56px;
  border-bottom: 1px solid var(--dpt-border);
}
.dpt-page-hero-inner h1 {
  color: #fff;
  margin: 8px 0 16px;
  max-width: 780px;
}
.dpt-page-hero-inner p {
  color: var(--dpt-text-muted);
  max-width: 680px;
  font-size: 1.1rem;
  line-height: 1.7;
}
.dpt-page-hero-inner .dpt-eyebrow {
  margin-bottom: 6px;
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.dpt-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--dpt-text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.dpt-breadcrumb a { color: var(--dpt-text-muted); }
.dpt-breadcrumb a:hover { color: var(--dpt-accent); }
.dpt-breadcrumb .sep { color: rgba(255,255,255,0.2); }

/* ── Homepage Hero ──────────────────────────────────────────── */
.dpt-hero {
  position: relative;
  overflow: hidden;
  background: var(--dpt-bg);
  padding: calc(64px + 80px) 20px 80px;
  min-height: 600px;
}

.dpt-hero-glow,
.dpt-hero-glow2 {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.18;
}
.dpt-hero-glow {
  width: 500px; height: 500px;
  background: var(--dpt-accent);
  top: -80px; right: 5%;
  animation: dptGlow 8s ease-in-out infinite alternate;
}
.dpt-hero-glow2 {
  width: 350px; height: 350px;
  background: #0ea5e9;
  bottom: 0; left: 0%;
  animation: dptGlow 12s ease-in-out infinite alternate-reverse;
}
@keyframes dptGlow { to { transform: translate(30px, 20px) scale(1.1); } }

.dpt-hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}

.dpt-hero-text h1 {
  color: #fff;
  margin: 12px 0 20px;
}
.dpt-hero-text h1 em {
  font-style: normal;
  color: var(--dpt-accent);
}

.dpt-hero-desc {
  color: var(--dpt-text-muted);
  font-size: 1.1rem;
  line-height: 1.75;
  max-width: 580px;
  margin-bottom: 32px;
}

.dpt-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.dpt-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.dpt-badge {
  font-family: var(--dpt-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border: 1px solid var(--dpt-border);
  border-radius: 100px;
  color: var(--dpt-text-muted);
  background: var(--dpt-surface);
}

/* Stats grid */
.dpt-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.dpt-stat-card {
  background: var(--dpt-surface);
  border: 1px solid var(--dpt-border);
  border-radius: var(--dpt-radius);
  padding: 24px 20px;
  text-align: center;
  min-width: 130px;
}
.dpt-stat-num {
  font-family: var(--dpt-font-head);
  font-size: 2.6rem;
  color: #fff;
  line-height: 1;
}
.dpt-stat-num span {
  font-size: 1.4rem;
  color: var(--dpt-accent);
}
.dpt-stat-label {
  font-size: 0.78rem;
  color: var(--dpt-text-muted);
  margin-top: 6px;
  letter-spacing: 0.03em;
}

/* ── Feature cards ──────────────────────────────────────────── */
.dpt-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 36px;
}

.dpt-feature-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--dpt-radius);
  padding: 28px 24px;
  box-shadow: var(--dpt-shadow-card);
  transition: box-shadow var(--dpt-transition), transform var(--dpt-transition);
}
.dpt-feature-card:hover {
  box-shadow: 0 8px 32px rgba(26,115,232,0.12);
  transform: translateY(-2px);
}
.dpt-section-alt .dpt-feature-card {
  background: #fff;
}

.dpt-feature-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  line-height: 1;
}
.dpt-feature-card h3 {
  color: #0a1622;
  margin-bottom: 10px;
  font-size: 1.1rem;
}
.dpt-feature-card p {
  color: #4a5568;
  font-size: 0.925rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

/* ── Hytera section ─────────────────────────────────────────── */
.dpt-hytera-section { }
.dpt-hytera-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 56px;
  align-items: center;
}
.dpt-hytera-inner h2 { margin-bottom: 16px; }
.dpt-hytera-inner p  { color: #4a5568; margin-bottom: 20px; max-width: 580px; }

.dpt-check-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.dpt-check-list li {
  padding-left: 26px;
  position: relative;
  color: #374151;
  font-size: 0.95rem;
  line-height: 1.5;
}
.dpt-check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--dpt-green);
  font-weight: 700;
}

.dpt-hytera-badge-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}
.dpt-hytera-badge {
  background: var(--dpt-surface);
  border: 2px solid var(--dpt-border);
  border-radius: var(--dpt-radius);
  padding: 32px 28px;
  text-align: center;
  min-width: 220px;
}
.dpt-hytera-models {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}
.dpt-hytera-models div {
  font-family: var(--dpt-font-head);
  font-size: 1.6rem;
  color: #fff;
  background: var(--dpt-surface-2);
  border: 1px solid var(--dpt-border);
  border-radius: var(--dpt-radius-sm);
  padding: 10px 0;
  letter-spacing: 0.05em;
}
.dpt-hytera-label {
  font-size: 0.85rem;
  color: var(--dpt-text-muted);
  line-height: 1.5;
}
.dpt-hytera-label small { font-size: 0.8em; }

/* ── Use cases ──────────────────────────────────────────────── */
.dpt-use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 36px;
}
.dpt-use-card {
  background: var(--dpt-surface);
  border: 1px solid var(--dpt-border);
  border-radius: var(--dpt-radius);
  padding: 32px 24px;
}
.dpt-use-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}
.dpt-use-card h3 { color: #fff; margin-bottom: 10px; }
.dpt-use-card p  { color: var(--dpt-text-muted); font-size: 0.925rem; margin-bottom: 18px; }

/* ── FAQ accordion ──────────────────────────────────────────── */
.dpt-faq {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: 780px;
  margin-top: 32px;
}
.dpt-faq-item {
  border: 1px solid #e2e8f0;
  border-radius: var(--dpt-radius-sm);
  overflow: hidden;
  background: #fff;
}
.dpt-faq-q {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: #111;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background var(--dpt-transition);
}
.dpt-faq-q:hover { background: #f7faff; }
.dpt-faq-q::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--dpt-accent);
  flex-shrink: 0;
  transition: transform var(--dpt-transition);
}
.dpt-faq-q[aria-expanded="true"]::after {
  transform: rotate(45deg);
}
.dpt-faq-a {
  display: none;
  padding: 0 24px 20px;
  color: #374151;
  font-size: 0.95rem;
  line-height: 1.7;
}
.dpt-faq-a.open { display: block; }

/* ── Demo section ───────────────────────────────────────────── */
.dpt-demo-section { background: #fff; }
.dpt-demo-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.dpt-demo-inner h2 { margin-bottom: 12px; }
.dpt-demo-inner p  { color: #4a5568; margin-bottom: 24px; }
.dpt-demo-form-wrap {
  background: #f4f7fb;
  border: 1px solid #e2e8f0;
  border-radius: var(--dpt-radius);
  padding: 32px 28px;
}

/* CF7 overrides */
.dpt-demo-form-wrap .wpcf7-form p { margin-bottom: 14px; }
.dpt-demo-form-wrap .wpcf7-form input[type="text"],
.dpt-demo-form-wrap .wpcf7-form input[type="email"],
.dpt-demo-form-wrap .wpcf7-form textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid #cbd5e1;
  border-radius: var(--dpt-radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  color: #111;
  transition: border-color var(--dpt-transition);
}
.dpt-demo-form-wrap .wpcf7-form input:focus,
.dpt-demo-form-wrap .wpcf7-form textarea:focus {
  outline: none;
  border-color: var(--dpt-accent);
}
.dpt-demo-form-wrap .wpcf7-form textarea { min-height: 110px; resize: vertical; }
.dpt-demo-form-wrap .wpcf7-form input[type="submit"] {
  width: 100%;
  padding: 13px;
  background: var(--dpt-accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--dpt-radius-sm);
  cursor: pointer;
  transition: background var(--dpt-transition);
}
.dpt-demo-form-wrap .wpcf7-form input[type="submit"]:hover {
  background: var(--dpt-accent-h);
}

/* ── Blog ───────────────────────────────────────────────────── */
.dpt-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.dpt-blog-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--dpt-radius);
  overflow: hidden;
  box-shadow: var(--dpt-shadow-card);
  transition: box-shadow var(--dpt-transition), transform var(--dpt-transition);
}
.dpt-blog-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  transform: translateY(-2px);
}
.dpt-blog-card img { width: 100%; height: 200px; object-fit: cover; }
.dpt-blog-card-body { padding: 24px; }
.dpt-blog-date {
  font-family: var(--dpt-font-mono);
  font-size: 0.75rem;
  color: #64748b;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 8px;
}
.dpt-blog-card h2 { font-size: 1.15rem; margin-bottom: 10px; }
.dpt-blog-card h2 a { color: #0a1622; }
.dpt-blog-card h2 a:hover { color: var(--dpt-accent); }
.dpt-blog-card p { color: #4a5568; font-size: 0.9rem; margin-bottom: 16px; }
.dpt-pagination { margin-top: 40px; text-align: center; }
.dpt-pagination .nav-links { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.dpt-pagination a, .dpt-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid #e2e8f0;
  border-radius: var(--dpt-radius-sm);
  font-size: 0.9rem;
  color: #374151;
}
.dpt-pagination .current { background: var(--dpt-accent); color: #fff; border-color: var(--dpt-accent); }

/* ── Post content ───────────────────────────────────────────── */
.dpt-post-meta {
  font-family: var(--dpt-font-mono);
  font-size: 0.8rem;
  color: var(--dpt-text-muted);
  letter-spacing: 0.05em;
}
.dpt-content h2 { margin: 36px 0 14px; }
.dpt-content h3 { margin: 28px 0 12px; }
.dpt-content p  { margin-bottom: 18px; color: #374151; line-height: 1.75; }
.dpt-content ul, .dpt-content ol { padding-left: 24px; margin-bottom: 18px; }
.dpt-content li { margin-bottom: 6px; color: #374151; }
.dpt-content a  { color: var(--dpt-accent); }
.dpt-content a:hover { text-decoration: underline; }
.dpt-content blockquote {
  border-left: 4px solid var(--dpt-accent);
  padding: 16px 20px;
  background: #f4f7fb;
  border-radius: 0 var(--dpt-radius-sm) var(--dpt-radius-sm) 0;
  margin: 24px 0;
  color: #374151;
}
.dpt-post-content { max-width: 760px; }

/* ── Two-column layout ──────────────────────────────────────── */
.dpt-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 36px;
  align-items: start;
}
.dpt-two-col h3 { margin-bottom: 12px; color: #0a1622; }
.dpt-two-col p  { color: #4a5568; line-height: 1.7; }

/* ── Pricing cards ──────────────────────────────────────────── */
.dpt-pricing-card {
  background: #fff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--dpt-radius);
  padding: 32px 28px;
}
.dpt-pricing-card h3 {
  color: #0a1622;
  margin-bottom: 6px;
  font-size: 1.3rem;
}
.dpt-pricing-sub {
  color: #64748b;
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* ── Comparison table ───────────────────────────────────────── */
.dpt-compare-table-wrap { overflow-x: auto; margin-top: 36px; }
.dpt-compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.dpt-compare-table th,
.dpt-compare-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
}
.dpt-compare-table th {
  background: var(--dpt-bg);
  color: #fff;
  font-family: var(--dpt-font-head);
  font-size: 1rem;
  letter-spacing: 0.03em;
}
.dpt-compare-table th:first-child { border-radius: var(--dpt-radius-sm) 0 0 0; }
.dpt-compare-table th:last-child  { border-radius: 0 var(--dpt-radius-sm) 0 0; }
.dpt-compare-table td:first-child { color: #374151; font-weight: 500; }
.dpt-compare-table tr:nth-child(even) td { background: #f8fafc; }
.dpt-compare-table tr:last-child td { border-bottom: none; }

/* ── Footer ─────────────────────────────────────────────────── */
.dpt-footer {
  background: var(--dpt-nav-bg);
  color: rgba(255,255,255,0.7);
  padding: 64px 20px 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.dpt-footer-inner {
  max-width: 1180px;
  margin: 0 auto;
}
.dpt-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.dpt-footer-brand .dpt-footer-logo {
  font-family: var(--dpt-font-head);
  font-size: 1.6rem;
  color: #fff;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.dpt-footer-brand p { font-size: 0.875rem; line-height: 1.65; max-width: 280px; }
.dpt-footer-col h4 {
  font-family: var(--dpt-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 16px;
}
.dpt-footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.dpt-footer-col ul a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  transition: color var(--dpt-transition);
}
.dpt-footer-col ul a:hover { color: #fff; }
.dpt-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 12px;
}
.dpt-footer-bottom a { color: rgba(255,255,255,0.45); }
.dpt-footer-bottom a:hover { color: rgba(255,255,255,0.8); }

/* ── Scroll-reveal ──────────────────────────────────────────── */
.dpt-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.dpt-reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .dpt-hero-inner { grid-template-columns: 1fr; }
  .dpt-stats-grid { grid-template-columns: repeat(4, 1fr); }
  .dpt-hytera-inner { grid-template-columns: 1fr; }
  .dpt-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .dpt-nav-menu { display: none; }
  .dpt-nav-menu.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--dpt-nav-bg);
    padding: 24px 20px;
    gap: 4px;
    overflow-y: auto;
    z-index: 999;
  }
  .dpt-nav-menu.mobile-open > li > a {
    padding: 14px 16px;
    font-size: 1rem;
  }
  .dpt-dropdown {
    display: none;
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 16px;
  }
  .dpt-has-dropdown.open .dpt-dropdown { display: block; }
  .dpt-hamburger { display: flex; }
  .dpt-stats-grid { grid-template-columns: 1fr 1fr; }
  .dpt-two-col { grid-template-columns: 1fr; gap: 32px; }
  .dpt-demo-inner { grid-template-columns: 1fr; }
  .dpt-footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .dpt-footer-grid > :first-child { grid-column: 1 / -1; }
  .dpt-hero { padding: calc(64px + 48px) 20px 48px; }
  .dpt-page-hero { padding-bottom: 40px; }
  .dpt-features-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .dpt-stats-grid { grid-template-columns: 1fr 1fr; }
  .dpt-footer-grid { grid-template-columns: 1fr; }
  .dpt-footer-bottom { flex-direction: column; align-items: flex-start; }
  .dpt-hero-actions { flex-direction: column; }
  .dpt-btn-primary, .dpt-btn-secondary { width: 100%; justify-content: center; }
}