:root {
  --yellow: #f6c90e;
  --black: #090a0c;
  --white: #ffffff;
  --muted: #62635f;
  --soft-white: #f8f7f2;
  --line: rgba(9, 10, 12, 0.16);
  --shadow: 0 24px 70px rgba(9, 10, 12, 0.12);
  --parallax-x: 0px;
  --parallax-y: 0px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--black);
  background: var(--yellow);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { min-height: 100%; margin: 0; }
body { background: var(--yellow); }
a { color: inherit; }

.landing-shell {
  position: relative;
  min-height: 100svh;
  overflow-x: clip;
  overflow-y: visible;
  padding: 0;
  isolation: isolate;
  background: var(--yellow);
}

.landing-shell::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  border: 0;
  border-radius: 0;
  content: '';
  pointer-events: none;
}

.background-art {
  position: absolute;
  top: -42px;
  left: -42px;
  z-index: -2;
  width: calc(100% + 84px);
  height: min(76rem, 100svh);
  background-image: linear-gradient(to bottom, rgba(246, 201, 14, 0.12) 52%, var(--yellow) 100%), url('/fondo-lineas.png?v=20260904-1');
  background-repeat: no-repeat;
  background-position: center top, center 100px;
  background-size: cover;
  transform: translate3d(var(--parallax-x), var(--parallax-y), 0) scale(1.035);
  transition: transform 180ms ease-out;
  will-change: transform;
  pointer-events: none;
}

.hero-scroll-stage {
  position: relative;
  width: 100vw;
  height: calc(100svh + 2800px);
  margin-left: 50%;
  transform: translateX(-50%);
}

.hero {
  position: sticky;
  top: 0;
  display: flex;
  width: 100%;
  height: 100svh;
  min-height: 36rem;
  margin: 0 auto;
  padding: clamp(2rem, 7vh, 5rem) clamp(1rem, 4vw, 3rem);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #d8d5ca;
  text-align: center;
}

.hero-frame-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-sequence::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(246, 201, 14, 0.08), rgba(246, 201, 14, 0.18));
  content: '';
  pointer-events: none;
}

.hero-sequence-content {
  position: relative;
  z-index: 2;
  display: flex;
  width: min(100%, 64rem);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  flex-direction: column;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: clamp(1.4rem, 3vw, 2.25rem);
  box-shadow: 0 30px 90px rgba(9, 10, 12, 0.2);
  background: rgba(246, 201, 14, 0.62);
  backdrop-filter: blur(4px);
  transition: opacity 80ms linear, transform 80ms linear;
  will-change: opacity, transform;
}

.hero-tracking-annotation {
  position: absolute;
  inset: 0;
  z-index: 3;
  opacity: 0;
  pointer-events: none;
  transition: opacity 100ms linear, transform 100ms linear;
  will-change: opacity, transform;
}

.hero-tracking-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(6.4rem, 12vw, 10.4rem);
  height: auto;
  transform: translate(-50%, -50%);
}

.hero-tracking-card,
.hero-passenger-card {
  position: absolute;
  top: 50%;
  display: grid;
  width: min(20rem, calc(100vw - 2.5rem));
  padding: 1rem 1.1rem 1.05rem;
  gap: 0.25rem;
  border: 1px solid rgba(9, 10, 12, 0.14);
  border-radius: 1rem;
  box-shadow: 0 18px 55px rgba(9, 10, 12, 0.25);
  background: rgba(255, 255, 255, 0.86);
  color: var(--black);
  text-align: left;
  backdrop-filter: blur(12px);
  transform: translateY(-50%);
}

.hero-tracking-card { left: calc(50% + clamp(6.5rem, 11vw, 12rem)); }
.hero-passenger-card { right: calc(50% + clamp(6.5rem, 11vw, 12rem)); }

.hero-tracking-status { margin-bottom: 0.65rem; color: #276943; font-size: 0.68rem; font-weight: 850; letter-spacing: 0.1em; }
.hero-tracking-status i { display: inline-block; width: 0.48rem; height: 0.48rem; margin-right: 0.3rem; border-radius: 50%; background: #2d9562; box-shadow: 0 0 0 5px rgba(45, 149, 98, 0.14); }
.hero-tracking-card > span,
.hero-tracking-values span { color: #65716b; font-size: 0.64rem; font-weight: 800; letter-spacing: 0.1em; }
.hero-tracking-card > strong { font-size: 1.35rem; letter-spacing: -0.035em; }
.hero-tracking-card > small { margin-top: 0.15rem; color: #65716b; font-size: 0.65rem; font-weight: 750; letter-spacing: 0.06em; }
.hero-tracking-values { display: grid; margin-top: 0.8rem; padding-top: 0.75rem; grid-template-columns: 1fr 1fr; gap: 1rem; border-top: 1px solid rgba(9, 10, 12, 0.13); }
.hero-tracking-values div { display: grid; gap: 0.25rem; }
.hero-tracking-values b { font-size: 1.3rem; letter-spacing: -0.04em; }

.hero-passenger-card { gap: 0.7rem; }
.hero-passenger-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.hero-passenger-heading span { color: #65716b; font-size: 0.64rem; font-weight: 850; letter-spacing: 0.1em; }
.hero-passenger-heading strong { font-size: 1rem; }
.hero-passenger-card ol { display: grid; margin: 0; padding: 0; list-style: none; }
.hero-passenger-card li { display: grid; min-height: 1.75rem; grid-template-columns: 1fr auto; align-items: center; gap: 0.75rem; border-top: 1px solid rgba(9, 10, 12, 0.1); color: #69736e; font-size: 0.72rem; transition: color 120ms ease, opacity 120ms ease; opacity: 0.42; }
.hero-passenger-card li::before { width: 0.42rem; height: 0.42rem; grid-column: 1; grid-row: 1; border-radius: 50%; background: #a9b1ad; content: ''; }
.hero-passenger-card li > span { margin-left: 0.8rem; grid-column: 1; grid-row: 1; }
.hero-passenger-card time { grid-column: 2; grid-row: 1; font-weight: 800; }
.hero-passenger-card li[data-collected='true'] { color: var(--black); opacity: 1; }
.hero-passenger-card li[data-collected='true']::before { background: #2d9562; box-shadow: 0 0 0 4px rgba(45, 149, 98, 0.13); }

.section-label {
  margin: 0 0 1.2rem;
  font-size: 0.72rem;
  font-weight: 850;
  line-height: 1.3;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.brand-logo { display: block; width: min(82vw, 41rem); height: auto; margin: 0 auto; transform: translateY(-100px); }
.hero-sequence .brand-logo { width: min(72vw, 32rem); transform: none; }

.rule {
  width: 3.5rem;
  height: 3px;
  margin: clamp(2rem, 5vh, 3.25rem) auto clamp(1.5rem, 3vh, 2.15rem);
  background: var(--black);
}

h1, h2, h3, p { text-wrap: pretty; }

h1 {
  max-width: 58rem;
  margin: 0;
  font-size: clamp(1.85rem, 4vw, 3.55rem);
  font-weight: 520;
  line-height: 1.06;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.hero-summary {
  max-width: 47rem;
  margin: 1.6rem auto 0;
  font-size: clamp(1rem, 1.7vw, 1.25rem);
  line-height: 1.6;
}

.hero-link {
  display: inline-flex;
  margin-top: 2rem;
  padding: 0.85rem 1.15rem;
  gap: 0.75rem;
  align-items: center;
  border: 1px solid var(--black);
  border-radius: 999px;
  background: var(--black);
  color: var(--yellow);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.hero-link:hover { background: var(--white); color: var(--black); transform: translateY(-2px); }
.hero-link:focus-visible { outline: 3px solid var(--white); outline-offset: 4px; }

.content-flow {
  position: relative;
  z-index: 1;
  display: grid;
  width: 100%;
  margin: 0 auto;
  padding-bottom: 0;
  gap: 0;
}

.content-panel,
.statement-panel {
  border: 0;
  border-bottom: 1px solid rgba(9, 10, 12, 0.16);
  border-radius: 0;
  box-shadow: none;
}

.content-panel {
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
  padding-inline: max(clamp(1.35rem, 5vw, 4.75rem), calc((100vw - 74rem) / 2 + 2rem));
  background: var(--white);
}
.section-label { color: #7a6500; }

h2 {
  max-width: 46rem;
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 4.1rem);
  font-weight: 560;
  line-height: 1.02;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.overview-panel { display: block; padding: 0; overflow: hidden; }
.overview-visual {
  display: block;
  background: #eeedee;
}
.overview-text {
  display: grid;
  padding-top: clamp(3.5rem, 7vw, 6.5rem);
  padding-bottom: clamp(1.25rem, 2.5vw, 2.5rem);
  padding-inline: max(clamp(1.35rem, 5vw, 4.75rem), calc((100vw - 74rem) / 2 + 2rem));
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
  gap: clamp(3rem, 9vw, 8rem);
  align-items: start;
}
.overview-title-card,
.overview-copy-card {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}
.overview-title-card h2 { max-width: 25rem; font-size: clamp(2rem, 3.7vw, 3.65rem); }
.overview-copy-card { max-width: 31rem; }
.overview-image { display: block; width: 100%; height: auto; margin-top: clamp(-6rem, -5vw, -3rem); object-fit: contain; }
.panel-copy { font-size: clamp(1rem, 1.6vw, 1.16rem); line-height: 1.7; color: #373833; }
.panel-copy p { margin: 0; }
.panel-copy p + p { margin-top: 1.2rem; }

.proof-card {
  display: flex;
  padding-block: clamp(2.2rem, 5vw, 4rem);
  padding-inline: max(clamp(1.35rem, 5vw, 4.75rem), calc((100vw - 74rem) / 2 + 2rem));
  gap: 1.3rem;
  align-items: baseline;
  border-top: 1px solid var(--line);
  background: #eeedee;
}

.proof-card strong { flex: 0 0 auto; font-size: clamp(2.4rem, 6vw, 5.5rem); font-weight: 600; line-height: 0.9; letter-spacing: -0.07em; }
.proof-card span { max-width: 27rem; color: var(--muted); font-size: 1rem; line-height: 1.5; }

.section-heading { display: grid; margin-bottom: clamp(2.5rem, 5vw, 4rem); gap: 0; }
.capabilities-panel { border-color: rgba(255, 255, 255, 0.14); background: var(--black); color: var(--white); }
.capabilities-panel .section-label,
.capabilities-panel .capability-number { color: var(--yellow); }
.capability-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability-grid article { min-height: 15rem; padding: clamp(1.5rem, 3.5vw, 2.75rem); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.capabilities-panel .capability-grid,
.capabilities-panel .capability-grid article { border-color: rgba(255, 255, 255, 0.2); }
.capability-top { display: flex; min-height: 7rem; margin-bottom: 1.25rem; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.capability-number { display: block; padding-top: 0.3rem; color: #8a7200; font-size: 0.78rem; font-weight: 850; letter-spacing: 0.12em; }
.capability-icon { display: block; width: clamp(6rem, 9vw, 7.5rem); height: auto; object-fit: contain; }
.capability-grid h3 { margin: 0 0 0.8rem; font-size: clamp(1.3rem, 2.3vw, 1.8rem); font-weight: 650; letter-spacing: -0.035em; }
.capability-grid p { max-width: 27rem; margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.6; }
.capabilities-panel .capability-grid p { color: rgba(255, 255, 255, 0.72); }

.ai-panel { display: grid; grid-template-columns: minmax(16rem, 0.52fr) 1fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: center; }
.ai-visual { width: min(100%, 24rem); margin: 0 auto; }
.ai-visual-logo, .ai-graphic { display: block; width: 100%; height: auto; object-fit: contain; }
.ai-visual-logo { margin-bottom: 1.25rem; }
.ai-panel > div:last-child > p:not(.section-label) { max-width: 43rem; margin: 1.5rem 0 0; color: #373833; font-size: clamp(1rem, 1.5vw, 1.14rem); line-height: 1.7; }
.ai-panel .human-note { padding-left: 1.1rem; border-left: 3px solid var(--yellow); color: var(--muted) !important; }

.statement-panel { display: grid; overflow: hidden; grid-template-columns: repeat(3, minmax(0, 1fr)); background: var(--black); color: var(--white); }
.statement-panel p { display: flex; min-height: 10rem; margin: 0; padding: clamp(1.5rem, 3vw, 2.5rem); align-items: center; justify-content: center; border-right: 1px solid rgba(255, 255, 255, 0.22); font-size: clamp(1.25rem, 2.5vw, 2rem); line-height: 1.15; letter-spacing: -0.035em; text-align: center; text-transform: uppercase; }
.statement-panel p:last-child { border-right: 0; color: var(--yellow); }

.contact-panel { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.contact-title { display: flex; flex-direction: column; align-items: flex-start; gap: .12em; }
.contact-title-logo { display: block; width: clamp(12rem, 27vw, 22rem); max-width: 100%; height: auto; margin-block: .03em .08em; }
.contact-heading > p:last-child { max-width: 34rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.07rem; line-height: 1.65; }
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 1.1rem; text-align: left; }
.contact-grid label { display: grid; gap: 0.65rem; }
.contact-grid span { font-size: 0.7rem; font-weight: 850; letter-spacing: 0.14em; text-transform: uppercase; }

.contact-grid input {
  width: 100%;
  height: 3.85rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  outline: none;
  background: var(--soft-white);
  padding: 0 1.15rem;
  color: var(--black);
  font: inherit;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.contact-grid input::placeholder { color: #777872; }
.contact-grid input:focus { border-color: var(--black); background: var(--white); box-shadow: 0 0 0 3px rgba(246, 201, 14, 0.5); }

.contact-grid button {
  min-height: 3.85rem;
  border: 2px solid var(--black);
  border-radius: 0.85rem;
  background: var(--black);
  padding: 0.9rem 1.4rem;
  color: var(--yellow);
  font: inherit;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.contact-grid button:hover { background: var(--yellow); color: var(--black); transform: translateY(-2px); }
.contact-grid button:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
.contact-grid button:active { transform: translateY(1px); }
.contact-grid button:disabled { cursor: wait; opacity: 0.68; }
.contact-status { display: block; min-height: 1.4rem; margin: 0; font-size: 0.95rem; font-weight: 700; text-align: center; }
.contact-status[data-state='success'] { color: #075f29; }
.contact-status[data-state='error'] { color: #8f1111; }
.contact-trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

.site-footer { position: relative; z-index: 1; display: flex; width: min(100%, 74rem); margin: 0 auto; padding: 0.5rem 0 clamp(2.5rem, 5vw, 4rem); justify-content: flex-start; align-items: flex-end; gap: 2rem; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.footer-legal { display: grid; max-width: 46rem; gap: 0.45rem; line-height: 1.55; }
.footer-legal span:last-child { font-weight: 650; letter-spacing: 0.04em; text-transform: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ai-chat-toggle {
  position: fixed;
  right: clamp(1rem, 2.5vw, 2rem);
  bottom: clamp(1rem, 2.5vw, 2rem);
  z-index: 20;
  display: inline-flex;
  min-height: 3.65rem;
  padding: 0.55rem 1rem 0.55rem 0.55rem;
  gap: 0.65rem;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  box-shadow: 0 18px 50px rgba(9, 10, 12, 0.28);
  background: var(--black);
  color: var(--yellow);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.ai-chat-toggle:hover { transform: translateY(-3px); box-shadow: 0 22px 55px rgba(9, 10, 12, 0.34); }
.ai-chat-toggle:focus-visible { outline: 3px solid var(--white); outline-offset: 3px; }
.ai-chat-toggle-mark,
.ai-chat-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--black);
  font-weight: 900;
  letter-spacing: -0.04em;
}
.ai-chat-toggle-mark { width: 2.5rem; height: 2.5rem; font-size: 0.82rem; }

.ai-chat {
  position: fixed;
  right: clamp(1rem, 2.5vw, 2rem);
  bottom: clamp(5.5rem, 8vw, 6.5rem);
  z-index: 21;
  width: min(25rem, calc(100vw - 2rem));
  max-height: min(38rem, calc(100svh - 7.5rem));
  overflow: hidden;
  border: 1px solid rgba(9, 10, 12, 0.18);
  border-radius: 1.4rem;
  box-shadow: 0 28px 80px rgba(9, 10, 12, 0.3);
  background: var(--white);
  color: var(--black);
}
.ai-chat[hidden] { display: none; }

.ai-chat-header {
  display: flex;
  min-height: 5rem;
  padding: 1rem 1rem 1rem 1.1rem;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: var(--black);
  color: var(--white);
}
.ai-chat-identity { display: flex; align-items: center; gap: 0.8rem; }
.ai-chat-mark { width: 2.8rem; height: 2.8rem; font-size: 0.9rem; }
.ai-chat-identity div { display: grid; gap: 0.22rem; }
.ai-chat-identity strong { font-size: 0.92rem; letter-spacing: 0.06em; }
.ai-chat-identity span { color: #c9cac5; font-size: 0.75rem; }
.ai-chat-identity i { display: inline-block; width: 0.48rem; height: 0.48rem; margin-right: 0.2rem; border-radius: 50%; background: #47c86b; }
.ai-chat-close { width: 2.5rem; height: 2.5rem; border: 0; border-radius: 50%; background: rgba(255, 255, 255, 0.1); color: var(--white); font: inherit; font-size: 1.65rem; line-height: 1; cursor: pointer; }
.ai-chat-close:hover { background: rgba(255, 255, 255, 0.18); }
.ai-chat-close:focus-visible { outline: 3px solid var(--yellow); outline-offset: 2px; }

.ai-chat-messages {
  display: flex;
  min-height: 12rem;
  max-height: min(20rem, calc(100svh - 22rem));
  padding: 1.15rem;
  gap: 0.75rem;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #f5f5f1;
}
.ai-message { max-width: 88%; padding: 0.8rem 0.95rem; border-radius: 1rem; font-size: 0.92rem; line-height: 1.45; white-space: pre-wrap; }
.ai-message-assistant { align-self: flex-start; border-bottom-left-radius: 0.3rem; background: var(--white); box-shadow: 0 5px 18px rgba(9, 10, 12, 0.08); }
.ai-message-user { align-self: flex-end; border-bottom-right-radius: 0.3rem; background: var(--yellow); }
.ai-message-loading { color: var(--muted); font-weight: 700; }

.ai-chat-suggestions { display: flex; padding: 0.9rem 1rem 0.35rem; gap: 0.45rem; overflow-x: auto; background: var(--white); scrollbar-width: none; }
.ai-chat-suggestions::-webkit-scrollbar { display: none; }
.ai-chat-suggestions button { flex: 0 0 auto; padding: 0.55rem 0.7rem; border: 1px solid rgba(9, 10, 12, 0.18); border-radius: 999px; background: var(--white); color: var(--black); font: inherit; font-size: 0.73rem; font-weight: 750; cursor: pointer; }
.ai-chat-suggestions button:hover { border-color: var(--black); background: #f7f2dc; }
.ai-chat-suggestions button:focus-visible { outline: 3px solid rgba(246, 201, 14, 0.6); outline-offset: 1px; }

.ai-chat-form { display: grid; padding: 0.7rem 1rem; grid-template-columns: 1fr auto; gap: 0.55rem; background: var(--white); }
.ai-chat-form input { min-width: 0; height: 3rem; padding: 0 0.9rem; border: 1px solid rgba(9, 10, 12, 0.22); border-radius: 0.85rem; background: #fafaf7; color: var(--black); font: inherit; font-size: 1rem; }
.ai-chat-form input:focus { outline: 0; border-color: var(--black); box-shadow: 0 0 0 3px rgba(246, 201, 14, 0.45); }
.ai-chat-form button { width: 3rem; height: 3rem; border: 0; border-radius: 0.85rem; background: var(--black); color: var(--yellow); font: inherit; font-size: 1.35rem; font-weight: 900; cursor: pointer; }
.ai-chat-form button:disabled,
.ai-chat-form input:disabled { cursor: wait; opacity: 0.6; }
.ai-chat-form button:focus-visible { outline: 3px solid var(--yellow); outline-offset: 2px; }
.ai-chat-note { margin: 0; padding: 0 1rem 0.85rem; color: var(--muted); font-size: 0.68rem; line-height: 1.35; text-align: center; }

@media (max-width: 820px) {
  .ai-panel, .contact-panel { grid-template-columns: 1fr; }
  .overview-text {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .overview-title-card,
  .overview-copy-card { max-width: min(100%, 31rem); }
  .ai-visual { width: min(100%, 20rem); }
  .statement-panel { grid-template-columns: 1fr; }
  .statement-panel p { min-height: 7rem; border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.22); }
  .statement-panel p:last-child { border-bottom: 0; }
}

@media (min-width: 641px) and (max-width: 900px) {
  .hero-tracking-card,
  .hero-passenger-card { width: 16rem; }
  .hero-tracking-card { left: calc(50% + 4.5rem); }
  .hero-passenger-card { right: calc(50% + 4.5rem); }
}

@media (max-width: 640px) {
  .landing-shell { padding-inline: 0; }
  .landing-shell::before { inset: 0; border-radius: 0; }
  .background-art { height: 50rem; background-size: auto 50rem; }
  .hero-scroll-stage { height: calc(100svh + 2200px); }
  .hero { min-height: 32rem; padding: 1rem 0.75rem; }
  .hero-sequence-content { padding: 1.35rem 1rem 1.5rem; }
  .hero-sequence .brand-logo { width: min(78vw, 22rem); }
  .hero-tracking-card { top: 0.75rem; right: 0.75rem; left: auto; width: 10.75rem; padding: 0.75rem 0.8rem; transform: none; }
  .hero-passenger-card { top: auto; right: auto; bottom: 0.75rem; left: 0.75rem; width: 11.75rem; padding: 0.75rem 0.8rem; transform: none; }
  .hero-tracking-logo { width: min(33.44vw, 7.92rem); }
  .hero-tracking-card > strong { font-size: 1.15rem; }
  .hero-tracking-values { gap: 0.55rem; }
  .hero-tracking-values b { font-size: 0.98rem; }
  .hero-summary { line-height: 1.5; }
  .content-panel { padding: 3.25rem 1.35rem; }
  .overview-panel { padding: 0; }
  .overview-text { padding: 2.5rem 1.35rem 1rem; }
  .overview-image { margin-top: -2.5rem; }
  .ai-visual { width: 17rem; max-width: 82%; }
  .contact-title-logo { width: 16rem; max-width: 82%; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid article { min-height: auto; }
  .proof-card { flex-direction: column; align-items: flex-start; }
  .proof-card strong { font-size: 3.5rem; }
  .site-footer { padding-inline: 0.8rem 5.25rem; align-items: flex-start; }
  .ai-chat-toggle { right: 0.75rem; bottom: 0.75rem; }
  .ai-chat-toggle > span:last-child { display: none; }
  .ai-chat-toggle { width: 3.65rem; padding-right: 0.55rem; }
  .ai-chat { right: 0.5rem; left: 0.5rem; bottom: 5rem; width: auto; max-height: calc(100svh - 5.75rem); }
  .ai-chat-messages { max-height: calc(100svh - 22rem); }
}

@media (hover: none), (pointer: coarse) {
  .background-art { transform: none; transition: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  .background-art { transform: none; }
  .hero-scroll-stage { height: 100svh; }
}