/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #1d1d1f;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --bg-deep: #0a0a0a;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --line: #e5e5e7;
  --accent: #0071e3;
  --red: #e9514b;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
  --max-w: 1200px;
  --max-narrow: 820px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.025em; line-height: 1.08; }
h1 { font-size: clamp(2.6rem, 6vw, 5rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4.4vw, 3.4rem); }
h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
h4 { font-size: 1.15rem; font-weight: 600; }
.lead { font-size: clamp(1rem, 1.4vw, 1.25rem); color: var(--text-muted); line-height: 1.5; font-weight: 400; }
.eyebrow { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--red); margin-bottom: 14px; }
.eyebrow.center { text-align: center; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
.container.narrow { max-width: var(--max-narrow); }
.center { text-align: center; }
.subtle { color: var(--text-muted); font-weight: 600; }

/* ========== NAV ========== */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: background 0.3s ease, border-color 0.3s ease;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: inline-flex; align-items: center; }
.logo img { height: 22px; width: auto; }
.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 100px;
  transition: background 0.2s, color 0.2s;
}
.nav-links a:hover { background: rgba(0,0,0,0.05); }
.nav-links .external { color: var(--text-muted); }
.nav-cta {
  background: var(--black) !important;
  color: #fff !important;
  font-weight: 600 !important;
  padding: 8px 18px !important;
}
.nav-cta:hover { background: #000 !important; }

.nav-mobile-btn { display: none; background: none; border: none; padding: 8px; cursor: pointer; }
.nav-mobile-btn span { display: block; width: 22px; height: 2px; background: var(--black); margin: 4px 0; transition: 0.3s; border-radius: 2px; }
.mobile-nav { display: none; list-style: none; background: #fff; border-top: 1px solid var(--line); }
.mobile-nav.open { display: block; }
.mobile-nav a { display: block; padding: 16px 32px; font-size: 17px; font-weight: 500; border-bottom: 1px solid var(--line); }

/* ========== REVEAL ANIMATIONS ========== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }
.reveal-img { opacity: 0; transform: scale(1.05) translateY(20px); transition: opacity 1.2s var(--ease), transform 1.2s var(--ease); }
.reveal-img.visible { opacity: 1; transform: none; }

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 100px 32px 60px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at top, #f5f5f7 0%, #fff 60%);
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0,113,227,0.06), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(233,81,75,0.05), transparent 50%);
  pointer-events: none;
}
.hero-content {
  text-align: center;
  max-width: 920px;
  z-index: 2;
  margin-bottom: 60px;
}
.hero h1 .line { display: block; }
.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 24px auto 36px;
  line-height: 1.5;
}
.hero-actions { display: inline-flex; gap: 16px; align-items: center; flex-wrap: wrap; justify-content: center; }
.hero-product {
  width: min(680px, 90%);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.hero-product img {
  width: 100%;
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.12);
  aspect-ratio: 16/10;
  object-fit: cover;
  background: var(--bg-alt);
}

.scroll-cue {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-cue span {
  display: block;
  width: 22px; height: 36px;
  border: 2px solid var(--text-muted);
  border-radius: 100px;
  position: relative;
}
.scroll-cue span::after {
  content: '';
  position: absolute;
  top: 8px; left: 50%;
  width: 3px; height: 6px;
  background: var(--text-muted);
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scrollCue 1.6s ease-in-out infinite;
}
@keyframes scrollCue {
  0% { transform: translate(-50%, 0); opacity: 0; }
  40% { opacity: 1; }
  80% { transform: translate(-50%, 12px); opacity: 0; }
  100% { transform: translate(-50%, 0); opacity: 0; }
}

/* ========== BUTTONS ========== */
.btn-pill {
  display: inline-flex;
  align-items: center;
  background: var(--black);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: background 0.2s, transform 0.2s;
  text-decoration: none;
}
.btn-pill:hover { background: #000; transform: translateY(-1px); }
.btn-pill.outline { background: transparent; color: var(--black); border: 1px solid var(--black); }
.btn-pill.outline:hover { background: var(--black); color: #fff; }
.btn-pill.primary { background: var(--red); }
.btn-pill.primary:hover { background: #c93f3a; }
.btn-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  padding: 14px 6px;
  display: inline-block;
  transition: color 0.2s;
}
.btn-text:hover { color: #0058b0; }
.btn-text.small { font-size: 14px; padding: 0; color: var(--accent); }
.btn-quote {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  padding-top: 12px;
  border-top: 1px solid var(--line);
  margin-top: 16px;
  transition: color 0.2s;
}
.btn-quote:hover { color: #0058b0; }

/* ========== BRAND BRIDGE ========== */
.brand-bridge {
  padding: 120px 32px;
  background: var(--bg-alt);
  text-align: center;
}
.brand-bridge h2 { margin-bottom: 24px; }
.brand-bridge .lead { max-width: 640px; margin: 0 auto 36px; }

/* ========== SECTION HEAD ========== */
.section-head {
  text-align: center;
  margin-bottom: 80px;
}
.section-head h2 { margin-bottom: 18px; }
.section-head .lead { max-width: 640px; margin: 0 auto; }
.section-head.dark h2, .section-head.dark .eyebrow { color: #fff; }
.section-head.dark .lead { color: rgba(255,255,255,0.7); }

/* ========== FEATURED ========== */
.featured { padding: 120px 0; }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}
.feature-card {
  background: var(--bg-alt);
  border-radius: 22px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}
.fc-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #fff;
}
.fc-img img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 24px;
  transition: transform 0.5s var(--ease);
}
.feature-card:hover .fc-img img { transform: scale(1.05); }
.fc-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.fc-meta { font-size: 12px; font-weight: 600; color: var(--red); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 10px; }
.fc-body h3 { margin-bottom: 12px; font-size: 1.6rem; }
.fc-body > p { color: var(--text-muted); font-size: 15px; line-height: 1.55; flex: 1; margin-bottom: 24px; }
.fc-foot { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; border-top: 1px solid var(--line); }
.price { font-size: 1.3rem; font-weight: 700; }
.featured-foot { text-align: center; color: var(--text-muted); max-width: 660px; margin: 0 auto; font-size: 15px; }
.featured-foot a { color: var(--accent); font-weight: 500; }

/* ========== TECHNOLOGY (Sticky Scroll) ========== */
.tech {
  background: var(--bg-deep);
  color: #fff;
  padding: 140px 0;
  position: relative;
}
.tech-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-top: 80px;
  align-items: start;
}
.tech-sticky {
  position: sticky;
  top: 12vh;
  align-self: start;
  height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech-imgs {
  position: relative;
  width: 100%;
  aspect-ratio: 1/1;
  max-width: 480px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 28px;
  overflow: hidden;
}
.tech-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 40px;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.tech-img.active { opacity: 1; transform: scale(1); }
.tech-steps {
  display: flex;
  flex-direction: column;
  gap: 220px;
  padding-top: 6vh;
  padding-bottom: 30vh;
}
.tech-step {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.step-num {
  font-size: 13px;
  font-weight: 600;
  color: var(--red);
  letter-spacing: 0.12em;
}
.tech-step h3 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 4px; }
.tech-step .lead { color: rgba(255,255,255,0.7); }
.step-points {
  list-style: none;
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.step-points li {
  font-size: 15px;
  color: rgba(255,255,255,0.6);
  padding-left: 18px;
  position: relative;
}
.step-points li::before {
  content: '';
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  background: var(--red);
  border-radius: 50%;
}

/* ========== APPS ========== */
.apps { padding: 140px 0; background: #fff; }
.apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.app-card {
  background: var(--bg-alt);
  border-radius: 20px;
  padding: 36px 32px;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.app-card:hover { background: #ebebef; transform: translateY(-3px); }
.app-icon {
  font-size: 1.6rem;
  margin-bottom: 18px;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.app-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.app-card p { font-size: 15px; color: var(--text-muted); line-height: 1.55; margin-bottom: 16px; }
.app-suggest { font-size: 12px !important; color: var(--accent) !important; font-weight: 500; margin-bottom: 0 !important; letter-spacing: 0.02em; }

/* ========== CATALOG ========== */
.catalog { padding: 140px 0; background: var(--bg-alt); }
.cat-heading {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-top: 1px solid var(--line);
  padding-top: 32px;
  margin-bottom: 32px;
  margin-top: 80px;
}
.cat-heading:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.card {
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.08);
}
.card-img {
  aspect-ratio: 1/1;
  background: var(--bg-alt);
  overflow: hidden;
}
.card-img img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 24px;
  transition: transform 0.4s var(--ease);
}
.card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card-meta { font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 8px; }
.card h4 { font-size: 1.2rem; margin-bottom: 14px; }
.card-specs { list-style: none; flex: 1; }
.card-specs li {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 0;
  line-height: 1.4;
}
.card-specs li::before { content: '· '; color: var(--red); font-weight: 700; }
.card-price { font-size: 1.05rem; font-weight: 700; margin-top: 14px; }

/* ========== SIZING TABLE ========== */
.sizing { padding: 140px 0; background: #fff; }
.size-table {
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}
.size-row {
  display: grid;
  grid-template-columns: 1.2fr 1.5fr 2fr;
  border-bottom: 1px solid var(--line);
}
.size-row:last-child { border-bottom: none; }
.size-row span {
  padding: 18px 24px;
  font-size: 15px;
  border-right: 1px solid var(--line);
}
.size-row span:last-child { border-right: none; }
.size-row.hd span {
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--bg-alt);
  color: var(--text-muted);
}
.size-row:not(.hd):hover { background: var(--bg-alt); }

/* ========== FAQ ========== */
.faq { padding: 140px 0; background: var(--bg-alt); }
.faq-list { display: flex; flex-direction: column; gap: 0; }
.faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background 0.2s;
}
.faq-item[open] { background: rgba(255,255,255,0.5); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 28px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--black);
  letter-spacing: -0.015em;
  position: relative;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--text-muted);
  transition: transform 0.3s var(--ease);
  margin-left: 24px;
}
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 0 8px 28px; }
.faq-answer p { color: var(--text-muted); font-size: 16px; line-height: 1.6; }
.faq-answer a { color: var(--accent); }

/* ========== QUOTE ========== */
.quote { padding: 140px 0; background: var(--bg-deep); color: #fff; }
.quote-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 80px; align-items: start; }
.quote-text .eyebrow { color: var(--red); }
.quote-text h2 { color: #fff; margin-bottom: 24px; }
.quote-text .lead { color: rgba(255,255,255,0.7); margin-bottom: 32px; }
.quote-meta { display: flex; flex-direction: column; gap: 8px; margin-top: 32px; }
.meta-link { color: rgba(255,255,255,0.6); font-size: 14px; transition: color 0.2s; }
.meta-link:hover { color: #fff; }

.quote-form { display: flex; flex-direction: column; gap: 18px; }
.quote-form label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  margin-top: 6px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}
.quote-form input::placeholder,
.quote-form textarea::placeholder { color: rgba(255,255,255,0.3); }
.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus { border-color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.08); }
.quote-form select { appearance: none; background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 14 14"><path d="M3 5l4 4 4-4" fill="none" stroke="rgba(255,255,255,0.5)" stroke-width="1.5"/></svg>'); background-repeat: no-repeat; background-position: right 18px center; padding-right: 40px; }
.quote-form select option { background: var(--bg-deep); }
.quote-form textarea { resize: vertical; min-height: 100px; }
.quote-form .btn-pill { margin-top: 8px; align-self: flex-start; padding: 16px 32px; font-size: 16px; }
.form-fineprint { font-size: 12px; color: rgba(255,255,255,0.4); margin-top: 0; }

/* ========== FOOTER ========== */
footer { background: #000; color: rgba(255,255,255,0.6); padding: 80px 0 32px; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 80px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p { font-size: 14px; line-height: 1.6; margin: 16px 0 20px; max-width: 360px; }
.footer-logo-img { height: 30px; width: auto; filter: invert(1) brightness(2); }
.footer-dba {
  display: inline-block;
  font-size: 14px;
  color: #fff;
  font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.3);
  padding-bottom: 4px;
  transition: border-color 0.2s;
}
.footer-dba:hover { border-color: #fff; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.fcol h4 { color: #fff; font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 16px; }
.fcol ul { list-style: none; }
.fcol ul li { margin-bottom: 10px; }
.fcol ul li a, .fcol ul li { font-size: 14px; color: rgba(255,255,255,0.55); transition: color 0.2s; }
.fcol ul li a:hover { color: #fff; }
.footer-bottom {
  padding-top: 32px;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.04em;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .featured-grid { grid-template-columns: 1fr; max-width: 540px; margin-left: auto; margin-right: auto; }
  .apps-grid { grid-template-columns: 1fr 1fr; }
  .tech-stage { grid-template-columns: 1fr; gap: 40px; }
  .tech-sticky { position: relative; top: auto; height: 50vh; }
  .tech-steps { gap: 80px; padding-top: 0; padding-bottom: 0; }
  .quote-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-top { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 768px) {
  body { font-size: 16px; }
  .container, .nav-inner { padding: 0 24px; }
  .nav-links { display: none; }
  .nav-mobile-btn { display: block; }
  .featured, .apps, .catalog, .sizing, .faq, .quote, .tech, .brand-bridge { padding: 80px 0; }
  .grid { grid-template-columns: 1fr 1fr; }
  .apps-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .size-row { grid-template-columns: 1fr; }
  .size-row span { border-right: none; border-bottom: 1px solid var(--line); }
  .size-row span:last-child { border-bottom: none; }
  .hero { padding-top: 120px; }
  .hero-product { width: 100%; }
}
@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; }
  h1 { font-size: 2.4rem; }
}