*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --navy:       #0a1628;
  --navy-mid:   #0d2137;
  --dark-blue:  #1a3a5c;
  --mid-blue:   #2a6090;
  --light-blue: #4a90c4;
  --accent:     #4fc3f7;
  --green:      #66bb6a;
  --off-white:  #f0f4f8;
  --light-gray: #f5f7fa;
  --text-dark:  #0f1923;
  --text-muted: #5a6a7a;
  --border:     #dde4ed;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ─── NAVIGATION ─── */
nav.main-nav {
  position: static;
  background: rgba(10, 22, 40, 0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid rgba(255,255,255,0.06);
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}

.logo-img {
  height: 68px;
  width: auto;
  max-width: 260px;
  display: block;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  background: radial-gradient(ellipse at 55% 45%, #1e4778 0%, #0d2137 40%, var(--navy) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 130px 2rem 90px;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74,195,247,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,195,247,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: 760px; height: 760px;
  background: radial-gradient(circle, rgba(42,96,144,0.28) 0%, transparent 65%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 1; max-width: 880px; }

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

.hero-headline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.hero-logo {
  width: 192px;
  height: 192px;
  object-fit: contain;
  flex-shrink: 0;
}
.hero h1 {
  font-size: clamp(1.2rem, 2.75vw, 2.4rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 0;
  letter-spacing: -0.01em;
  text-align: center;
}
.hero h1 em { color: var(--accent); font-style: normal; }

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  color: rgba(255,255,255,0.6);
  max-width: 640px;
  margin: 0 auto 0;
  line-height: 1.75;
}
.hero-amr-note {
  font-size: clamp(0.88rem, 1.5vw, 1rem);
  color: rgba(255,255,255,0.6);
  max-width: 640px;
  margin: 0.9rem auto 2.5rem;
  text-align: center;
  line-height: 1.75;
}

.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 1.1rem 2.4rem;
  border-radius: 7px;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  transition: all 0.22s;
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary { background: var(--mid-blue); color: #fff; }
.btn-primary:hover { background: var(--light-blue); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(42,96,144,0.45); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.28); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.hero-stats {
  display: flex;
  gap: clamp(2rem, 5vw, 4rem);
  justify-content: center;
  margin-top: 4rem;
  padding-top: 2.75rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  flex-wrap: wrap;
}
.stat-num { font-size: 2.2rem; font-weight: 900; color: var(--accent); display: block; line-height: 1; }
.stat-lbl { font-size: 0.7rem; color: rgba(255,255,255,0.42); letter-spacing: 0.14em; text-transform: uppercase; margin-top: 0.35rem; }

/* ─── SHARED SECTION STYLES ─── */
section { padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 4vw, 3rem); }
.container { max-width: 1200px; margin: 0 auto; }

.sec-label {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mid-blue);
  margin-bottom: 0.6rem;
}
.sec-title {
  text-align: center;
  font-size: clamp(1.9rem, 3.5vw, 2.9rem);
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 1rem;
  line-height: 1.15;
}
.sec-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 3.5rem;
  font-size: 1.02rem;
  line-height: 1.72;
}

/* ─── ENVIRONMENTS ─── */
#environments { background: var(--light-gray); }
#environments .sec-sub { color: #111; font-weight: 700; }
#environments .sec-label { color: var(--mid-blue); }

.env-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(262px, 1fr));
  gap: 1.75rem;
}

.env-card {
  background: #fff;
  border-radius: 14px;
  padding: 2.25rem 2rem 2.5rem;
  box-shadow: 0 2px 18px rgba(0,0,0,0.055);
  border-top: 4px solid var(--mid-blue);
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}
.env-card::after {
  content: '';
  position: absolute;
  bottom: -50px; right: -50px;
  width: 140px; height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42,96,144,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.env-card:hover { transform: translateY(-7px); box-shadow: 0 18px 52px rgba(0,0,0,0.1); }

.env-card:nth-child(1) { border-top-color: #1a3a5c; }
.env-card:nth-child(2) { border-top-color: #2a6090; }
.env-card:nth-child(3) { border-top-color: #4a90c4; }
.env-card:nth-child(4) { border-top-color: #4fc3f7; }

.env-icon {
  width: 54px; height: 54px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.55rem;
  margin-bottom: 1.3rem;
}
.env-card:nth-child(1) .env-icon { background: linear-gradient(135deg, #0d2137, #1a3a5c); }
.env-card:nth-child(2) .env-icon { background: linear-gradient(135deg, #1a3a5c, #2a6090); }
.env-card:nth-child(3) .env-icon { background: linear-gradient(135deg, #2a6090, #4a90c4); }
.env-card:nth-child(4) .env-icon { background: linear-gradient(135deg, #4a90c4, #4fc3f7); }

.env-card h3 { font-size: 1.2rem; font-weight: 800; color: var(--navy); margin-bottom: 1.1rem; }

.env-card ul { list-style: none; }
.env-card ul li {
  padding: 0.38rem 0;
  color: #111;
  font-weight: 700;
  font-size: 0.89rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  line-height: 1.45;
}
.env-card ul li::before {
  content: '▸';
  color: var(--mid-blue);
  flex-shrink: 0;
  font-size: 0.72rem;
  margin-top: 0.18rem;
}

/* ─── COMPARISON ─── */
#comparison { background: var(--navy); }
#comparison .sec-label { color: var(--accent); }
#comparison .sec-title { color: #fff; }
#comparison .sec-sub   { color: rgba(255,255,255,0.52); margin-bottom: 0.75rem; }
.compare-disclaimer {
  text-align: center;
  color: rgba(255,255,255,0.35);
  font-size: 0.78rem;
  font-style: italic;
  max-width: 580px;
  margin: 0 auto 3.5rem;
  line-height: 1.6;
}

/* Robot Selector */
.selector-hint {
  text-align: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  margin-bottom: 1.4rem;
}
.selector-hint strong { color: var(--accent); }

.robot-selector {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 0.7rem;
  margin-bottom: 2.75rem;
}

.robot-chip {
  background: rgba(255,255,255,0.04);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 0.95rem 1rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  position: relative;
  user-select: none;
}
.robot-chip:hover {
  border-color: rgba(79,195,247,0.4);
  background: rgba(79,195,247,0.06);
  transform: translateY(-2px);
}
.robot-chip.sel-a {
  border-color: var(--accent);
  background: rgba(79,195,247,0.1);
}
.robot-chip.sel-b {
  border-color: var(--green);
  background: rgba(102,187,106,0.1);
}
.chip-slot-badge {
  position: absolute;
  top: 0.45rem; right: 0.55rem;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.12rem 0.4rem;
  border-radius: 3px;
  line-height: 1.4;
}
.sel-a .chip-slot-badge { background: var(--accent); color: #000; }
.sel-b .chip-slot-badge { background: var(--green); color: #000; }
.chip-robot-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  padding-right: 1.8rem;
}
.chip-robot-maker {
  font-size: 0.63rem;
  color: rgba(255,255,255,0.36);
  margin-top: 0.22rem;
  line-height: 1.3;
}

/* Comparison placeholder */
.compare-placeholder {
  text-align: center;
  padding: 3.5rem 1rem;
  color: rgba(255,255,255,0.28);
  font-size: 0.95rem;
  border: 1px dashed rgba(255,255,255,0.1);
  border-radius: 14px;
}
.compare-placeholder .ph-icon {
  font-size: 2.8rem;
  margin-bottom: 0.75rem;
  display: block;
  opacity: 0.5;
}
.compare-placeholder p { margin-top: 0.4rem; font-size: 0.82rem; color: rgba(255,255,255,0.2); }

/* Profile cards (dynamic) */
.model-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.model-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 2rem 2rem 1.75rem;
  position: relative;
}
.model-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: 14px 14px 0 0;
}
.card-a::before { background: linear-gradient(90deg, var(--accent), #0288d1); }
.card-b::before { background: linear-gradient(90deg, var(--green),  #43a047); }

.model-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 20px;
  margin-bottom: 1rem;
}
.tag-a { background: rgba(74,195,247,0.14); color: var(--accent); }
.tag-b { background: rgba(102,187,106,0.14); color: var(--green); }

.model-card h3        { font-size: 1.5rem; font-weight: 900; color: #fff; margin-bottom: 0.3rem; }
.model-card .maker    { font-size: 0.8rem; color: rgba(255,255,255,0.38); margin-bottom: 0.25rem; }
.model-card .robot-website { font-size: 0.78rem; margin-bottom: 1rem; }
.model-card .robot-website a { color: var(--accent); text-decoration: none; opacity: 0.8; }
.model-card .robot-website a:hover { opacity: 1; text-decoration: underline; }
.model-card .desc     { font-size: 0.88rem; color: rgba(255,255,255,0.65); line-height: 1.68; }

.best-for {
  margin-top: 1.3rem;
  padding-top: 1.3rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.best-for .bf-label { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.14em; color: rgba(255,255,255,0.3); margin-bottom: 0.5rem; }
.bf-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.bf-tags span {
  font-size: 0.73rem;
  font-weight: 600;
  padding: 0.22rem 0.7rem;
  border-radius: 4px;
}
.card-a .bf-tags span { background: rgba(74,195,247,0.12); color: var(--accent); }
.card-b .bf-tags span { background: rgba(102,187,106,0.12); color: var(--green); }

/* Robot photo in card */
.card-photo {
  width: calc(100% + 4rem);
  margin: -2rem -2rem 1.5rem -2rem;
  height: 220px;
  overflow: hidden;
  border-radius: 14px 14px 0 0;
}
.card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.card-photo-placeholder {
  width: calc(100% + 4rem);
  margin: -2rem -2rem 1.5rem -2rem;
  height: 220px;
  border-radius: 14px 14px 0 0;
  background: rgba(255,255,255,0.025);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.5rem;
  color: rgba(255,255,255,0.15);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.card-photo-placeholder span { font-size: 2rem; opacity: 0.2; }

/* Comparison table */
.compare-wrap { overflow-x: auto; border-radius: 12px; border: 1px solid rgba(255,255,255,0.07); }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.compare-table thead th {
  padding: 1.1rem 1.6rem;
  text-align: left;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: rgba(255,255,255,0.38);
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.compare-table thead th:not(:first-child) { text-align: center; }
.compare-table thead th.th-a { color: var(--accent); }
.compare-table thead th.th-b { color: var(--green); }

.compare-table tbody td {
  padding: 1rem 1.6rem;
  font-size: 0.89rem;
  color: rgba(255,255,255,0.72);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.compare-table tbody td:first-child {
  color: rgba(255,255,255,0.4);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.compare-table tbody td:not(:first-child) { text-align: center; }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover td { background: rgba(255,255,255,0.025); }

.chip {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  font-size: 0.76rem;
  font-weight: 700;
}
.chip-blue  { background: rgba(74,195,247,0.14);  color: var(--accent); }
.chip-green { background: rgba(102,187,106,0.14); color: var(--green); }
.chip-gray  { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.55); }


/* ─── AMR COMPARISON ─── */
#amr-comparison { background: #0a1a0c; }
#amr-comparison .sec-label { color: var(--green); }
#amr-comparison .sec-title { color: #fff; }
#amr-comparison .sec-sub   { color: rgba(255,255,255,0.52); }
#amr-comparison .compare-disclaimer { color: rgba(255,255,255,0.3); }
#amr-comparison .selector-hint { color: rgba(255,255,255,0.55); }
#amr-comparison .selector-hint strong { color: var(--green); }
#amr-comparison .robot-chip { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); }
#amr-comparison .robot-chip:hover { border-color: var(--green); }
#amr-comparison .chip-robot-name { color: #fff; }
#amr-comparison .chip-robot-maker { color: rgba(255,255,255,0.45); }
#amr-comparison .robot-chip.sel-a { border-color: var(--accent); background: rgba(74,195,247,0.1); }
#amr-comparison .robot-chip.sel-b { border-color: var(--green); background: rgba(102,187,106,0.1); }
#amr-comparison .chip-slot-badge { background: var(--accent); color: #fff; }
#amr-comparison .robot-chip.sel-b .chip-slot-badge { background: var(--green); }
#amr-comparison .compare-placeholder { color: rgba(255,255,255,0.4); }
#amr-comparison .model-card { background: #122416; border: 1px solid rgba(102,187,106,0.15); }
#amr-comparison .model-card h3 { color: #fff; }
#amr-comparison .model-card .maker { color: rgba(255,255,255,0.38); }
#amr-comparison .model-card .robot-website a { color: var(--green); }
#amr-comparison .model-card .desc { color: rgba(255,255,255,0.65); }
#amr-comparison .bf-label { color: rgba(255,255,255,0.45); }
#amr-comparison .bf-tags span { background: rgba(102,187,106,0.14); color: var(--green); }
#amr-comparison .model-tag { background: rgba(102,187,106,0.18); color: var(--green); }
#amr-comparison .compare-table { background: #122416; }
#amr-comparison .compare-table thead tr { background: #1a3d1e; }
#amr-comparison .compare-table .th-a { color: var(--accent); }
#amr-comparison .compare-table .th-b { color: var(--green); }
#amr-comparison .compare-table tbody tr:nth-child(even) { background: rgba(255,255,255,0.03); }
#amr-comparison .compare-table td { color: rgba(255,255,255,0.8); border-bottom-color: rgba(255,255,255,0.06); }
#amr-comparison .compare-table td:first-child { color: rgba(255,255,255,0.45); }
#amr-comparison .card-photo-placeholder { background: rgba(255,255,255,0.05); color: rgba(255,255,255,0.3); }

/* ─── CONTACT ─── */
#contact { background: #fff; }
#contact .sec-sub { color: #111; font-weight: 700; }
#contact .sec-label { color: var(--mid-blue); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.45fr;
  gap: 4rem;
  align-items: start;
}

.contact-left h3 { font-size: 1.75rem; font-weight: 900; color: var(--navy); margin-bottom: 1rem; }
.contact-left p  { color: #111; font-weight: 700; line-height: 1.75; margin-bottom: 2.5rem; }

.contact-detail {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.1rem;
}
.contact-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--dark-blue), var(--mid-blue));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.cd-text strong {
  display: block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #111;
  margin-bottom: 0.15rem;
  font-weight: 700;
}
.cd-text { font-size: 0.9rem; color: #111; font-weight: 700; }
.cd-text a { color: var(--mid-blue); text-decoration: none; }
.cd-text a:hover { text-decoration: underline; }

.contact-form-box {
  background: var(--light-gray);
  border-radius: 16px;
  padding: 2.5rem;
}

.form-group { margin-bottom: 1.4rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--navy);
  margin-bottom: 0.45rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text-dark);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--mid-blue);
  box-shadow: 0 0 0 3px rgba(42,96,144,0.13);
}
.form-group textarea { height: 132px; resize: vertical; }
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' viewBox='0 0 12 7'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a6a7a' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.btn-submit {
  width: 100%;
  background: linear-gradient(135deg, var(--dark-blue), var(--mid-blue));
  color: #fff;
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s, transform 0.2s;
  font-family: inherit;
}
.btn-submit:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-submit:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }

#form-success {
  display: none;
  margin-top: 1rem;
  background: #e8f5e9;
  color: #2e7d32;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.88rem;
  text-align: center;
}
.field-error { border-color: #e53935 !important; }

/* ─── BOTTOM NAV (fixed header) ─── */
.bottom-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  height: 88px;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* ─── FOOTER ─── */
footer {
  background: var(--navy);
  padding: 2.25rem clamp(1.25rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-left { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-logo {
  width: 192px;
  height: 192px;
  object-fit: contain;
}
footer p { color: rgba(255,255,255,0.3); font-size: 0.8rem; }
.footer-links { display: flex; gap: 1.75rem; flex-wrap: wrap; }
.footer-links a {
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .model-cards { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .robot-selector { grid-template-columns: repeat(auto-fill, minmax(145px, 1fr)); }
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 2rem; }
  footer { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .robot-selector { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
}