:root {
    --flight-deck: #061c44;
    --flight-deck-deep: #03132f;
    --radar-blue: #0a78ff;
    --sky-cyan: #69d4e7;
    --safe: #20ba69;
    --caution: #ffad1f;
    --nofly: #f04d5b;
    --paper: #f6f9fd;
    --white: #ffffff;
    --ink: #07152d;
    --muted: #617089;
    --line: rgba(7, 21, 45, 0.14);
    --dark-line: rgba(255, 255, 255, 0.14);
    --display: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
    --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --shadow: 0 24px 70px rgba(3, 19, 47, 0.2);
    --radius: 28px;
}

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

html {
    scroll-behavior: smooth;
    background: var(--flight-deck-deep);
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: var(--body);
    font-size: 16px;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body.nav-open {
    overflow: hidden;
}

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

a {
    color: inherit;
}

button,
input,
textarea,
select {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

:focus-visible {
    outline: 3px solid var(--caution);
    outline-offset: 4px;
}

.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;
}

.skip-link {
    position: fixed;
    z-index: 999;
    top: 12px;
    left: 12px;
    padding: 10px 16px;
    border-radius: 999px;
    color: var(--white);
    background: var(--flight-deck);
    transform: translateY(-180%);
    transition: transform 160ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    right: 0;
    padding: 18px clamp(18px, 4vw, 64px);
    transition: background 220ms ease, padding 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
    padding-top: 10px;
    padding-bottom: 10px;
    background: rgba(3, 19, 47, 0.92);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
}

.nav-shell {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    text-decoration: none;
}

.brand img {
    border-radius: 12px;
    box-shadow: 0 7px 20px rgba(0, 0, 0, 0.22);
}

.brand span {
    display: grid;
    line-height: 1.05;
}

.brand strong {
    font-family: var(--display);
    font-size: 1rem;
    letter-spacing: 0.01em;
}

.brand small {
    margin-top: 5px;
    color: rgba(255, 255, 255, 0.58);
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.12em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: clamp(15px, 2.2vw, 34px);
}

.nav-menu a {
    position: relative;
    padding: 8px 0;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.85rem;
    font-weight: 650;
    text-decoration: none;
    transition: color 160ms ease;
}

.nav-menu a:hover,
.nav-menu a.is-active {
    color: var(--white);
}

.nav-menu a.is-active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 1px;
    height: 2px;
    border-radius: 99px;
    background: var(--sky-cyan);
}

.nav-menu .nav-cta {
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    color: var(--white);
}

.nav-menu .nav-cta:hover {
    background: var(--white);
    color: var(--flight-deck);
}

.nav-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
}

.nav-toggle > span:not(.sr-only) {
    width: 19px;
    height: 2px;
    margin: 5px auto;
    display: block;
    background: currentColor;
    transition: transform 160ms ease;
}

.eyebrow {
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--radar-blue);
    font-family: var(--mono);
    font-size: 0.73rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.eyebrow > span {
    width: 18px;
    height: 2px;
    display: inline-block;
    background: currentColor;
}

.hero {
    position: relative;
    min-height: 850px;
    padding: 148px clamp(20px, 5vw, 72px) 100px;
    overflow: hidden;
    color: var(--white);
    background:
        linear-gradient(115deg, rgba(3, 19, 47, 0.98) 10%, rgba(6, 28, 68, 0.91) 55%, rgba(10, 120, 255, 0.35) 100%),
        var(--flight-deck);
}

.hero::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 120px;
    background: linear-gradient(to top, rgba(105, 212, 231, 0.2), transparent);
    pointer-events: none;
}

.hero-atmosphere {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-atmosphere::before {
    content: "";
    position: absolute;
    width: 650px;
    height: 650px;
    right: -130px;
    top: -150px;
    background: radial-gradient(circle, rgba(105, 212, 231, 0.24), rgba(10, 120, 255, 0.06) 48%, transparent 70%);
    filter: blur(2px);
}

.radar-ring {
    position: absolute;
    border: 1px solid rgba(105, 212, 231, 0.18);
    border-radius: 50%;
}

.radar-ring--one {
    width: 570px;
    height: 570px;
    right: 4vw;
    top: 180px;
}

.radar-ring--two {
    width: 820px;
    height: 820px;
    right: -8vw;
    top: 55px;
}

.flight-path {
    position: absolute;
    left: 1vw;
    top: 52%;
    width: 42vw;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(105, 212, 231, 0.34), transparent);
    transform: rotate(-9deg);
}

.flight-path::after {
    content: "✦";
    position: absolute;
    right: 22%;
    top: -11px;
    color: var(--sky-cyan);
    font-size: 16px;
}

.hero-grid {
    position: relative;
    z-index: 2;
    max-width: 1390px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(540px, 1.1fr);
    align-items: center;
    gap: clamp(48px, 7vw, 120px);
}

.hero-copy {
    padding-bottom: 40px;
}

.hero-copy .eyebrow {
    color: var(--sky-cyan);
}

.hero h1,
.section h2,
.download-section h2,
.page-hero h1 {
    font-family: var(--display);
    font-weight: 760;
    letter-spacing: -0.055em;
    line-height: 0.94;
}

.hero h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(4.6rem, 8vw, 8.7rem);
}

.hero h1 em,
.section h2 em {
    color: var(--sky-cyan);
    font-style: normal;
    font-weight: 500;
}

.hero-lede {
    max-width: 640px;
    margin: 30px 0 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: clamp(1.08rem, 1.8vw, 1.35rem);
    line-height: 1.6;
}

.hero-actions {
    margin-top: 36px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.primary-button {
    min-height: 54px;
    padding: 14px 20px;
    display: inline-flex;
    align-items: center;
    gap: 28px;
    border-radius: 999px;
    color: var(--flight-deck);
    background: var(--white);
    font-weight: 760;
    text-decoration: none;
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.18);
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-button span {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: var(--white);
    background: var(--radar-blue);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.25);
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: inherit;
    font-weight: 700;
    text-decoration: none;
}

.text-link span {
    color: var(--radar-blue);
}

.hero .text-link span {
    color: var(--sky-cyan);
}

.platform-note {
    margin-top: 35px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 9px;
    color: rgba(255, 255, 255, 0.54);
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
}

.platform-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--white);
}

.platform-dot--android {
    background: var(--safe);
}

.platform-divider {
    width: 1px;
    height: 18px;
    margin: 0 6px;
    background: rgba(255, 255, 255, 0.2);
}

.hero-stage {
    position: relative;
    min-height: 660px;
}

.hero-phone {
    position: absolute;
    z-index: 2;
    width: 340px;
    right: 16%;
    top: 0;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 48px;
    background: #111b2b;
    box-shadow: 0 45px 90px rgba(0, 0, 0, 0.46);
    transform: rotate(2deg);
    overflow: hidden;
}

.hero-phone img {
    border-radius: 40px;
}

.briefing-stamp {
    position: absolute;
    z-index: 3;
    top: 34px;
    left: -10px;
    width: 188px;
    padding: 13px 16px;
    border: 1px solid rgba(105, 212, 231, 0.28);
    border-radius: 12px;
    color: var(--white);
    background: rgba(3, 19, 47, 0.84);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.24);
}

.briefing-stamp span,
.briefing-stamp strong {
    display: block;
    font-family: var(--mono);
}

.briefing-stamp span {
    color: var(--sky-cyan);
    font-size: 0.63rem;
    letter-spacing: 0.12em;
}

.briefing-stamp strong {
    margin-top: 3px;
    font-size: 0.8rem;
}

.verdict-console {
    position: absolute;
    z-index: 5;
    right: -10px;
    bottom: 34px;
    width: min(520px, 87%);
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 18px;
    background: rgba(3, 19, 47, 0.9);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.34);
}

.verdict-console > p {
    margin: 0 0 10px 5px;
    color: rgba(255, 255, 255, 0.45);
    font-family: var(--mono);
    font-size: 0.64rem;
    letter-spacing: 0.14em;
}

.verdict-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 7px;
}

.verdict-buttons button {
    padding: 12px 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 11px;
    color: rgba(255, 255, 255, 0.62);
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 700;
}

.verdict-buttons button span {
    width: 7px;
    height: 7px;
    margin-right: 6px;
    display: inline-block;
    border-radius: 50%;
    background: currentColor;
}

.verdict-buttons button:nth-child(1) span { background: var(--safe); }
.verdict-buttons button:nth-child(2) span { background: var(--caution); }
.verdict-buttons button:nth-child(3) span { background: var(--nofly); }

.hero-stage[data-verdict="safe"] .verdict-buttons button:nth-child(1),
.hero-stage[data-verdict="caution"] .verdict-buttons button:nth-child(2),
.hero-stage[data-verdict="nofly"] .verdict-buttons button:nth-child(3) {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.35);
    background: rgba(255, 255, 255, 0.14);
}

.metric-chip {
    position: absolute;
    z-index: 4;
    width: 150px;
    padding: 14px 16px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 15px;
    color: var(--white);
    background: rgba(6, 28, 68, 0.86);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.2);
}

.metric-chip small,
.metric-chip strong,
.metric-chip span {
    display: block;
}

.metric-chip small {
    color: var(--sky-cyan);
    font-family: var(--mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
}

.metric-chip strong {
    margin-top: 2px;
    font-size: 1rem;
}

.metric-chip span {
    color: rgba(255, 255, 255, 0.48);
    font-size: 0.69rem;
}

.metric-chip--wind {
    left: 16px;
    top: 208px;
}

.metric-chip--gust {
    right: -18px;
    top: 150px;
}

.decision-rail {
    position: relative;
    z-index: 4;
    margin-top: -1px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    color: var(--white);
    background: var(--flight-deck-deep);
}

.decision-rail > div {
    min-height: 110px;
    padding: 25px clamp(18px, 4vw, 55px);
    display: grid;
    grid-template-columns: auto auto;
    align-content: center;
    justify-content: start;
    column-gap: 12px;
    border-right: 1px solid var(--dark-line);
}

.decision-rail strong {
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
}

.decision-rail small {
    grid-column: 2;
    color: rgba(255, 255, 255, 0.44);
    font-size: 0.7rem;
}

.decision-light,
.signal-list span {
    width: 10px;
    height: 10px;
    display: inline-block;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.06);
}

.safe { background: var(--safe); }
.caution { background: var(--caution); }
.nofly { background: var(--nofly); }

.section {
    padding: clamp(84px, 9vw, 150px) clamp(20px, 5vw, 72px);
}

.section-intro {
    max-width: 920px;
    margin: 0 auto 64px;
    text-align: center;
}

.section-intro .eyebrow {
    justify-content: center;
}

.section h2,
.download-section h2 {
    margin: 0;
    font-size: clamp(3rem, 6vw, 6.6rem);
}

.section-intro > p:last-child {
    max-width: 720px;
    margin: 24px auto 0;
    color: var(--muted);
    font-size: 1.08rem;
}

.briefing-section {
    background:
        linear-gradient(rgba(7, 21, 45, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(7, 21, 45, 0.035) 1px, transparent 1px),
        var(--paper);
    background-size: 32px 32px;
}

.briefing-layout {
    max-width: 1360px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 1fr 1fr;
    gap: 18px;
}

.briefing-card {
    min-height: 430px;
    padding: clamp(26px, 3.4vw, 48px);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 12px 32px rgba(3, 19, 47, 0.05);
}

.briefing-card--decision {
    color: var(--white);
    background: var(--flight-deck);
}

.card-index {
    margin-bottom: auto;
    color: var(--radar-blue);
    font-family: var(--mono);
    font-size: 0.67rem;
    letter-spacing: 0.14em;
}

.briefing-card--decision .card-index {
    color: var(--sky-cyan);
}

.briefing-card h3 {
    margin: 48px 0 10px;
    font-family: var(--display);
    font-size: clamp(1.6rem, 2.8vw, 2.5rem);
    letter-spacing: -0.04em;
    line-height: 1.04;
}

.briefing-card p {
    margin: 0 0 26px;
    color: var(--muted);
}

.briefing-card--decision p {
    color: rgba(255, 255, 255, 0.64);
}

.mini-verdict {
    padding: 16px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0 10px;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.07);
}

.mini-verdict small {
    grid-column: 2;
    color: rgba(255, 255, 255, 0.45);
}

.timeline-demo {
    padding: 18px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    border-top: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 0.66rem;
    white-space: nowrap;
}

.timeline-demo i {
    width: 22px;
    height: 1px;
    background: var(--line);
}

.timeline-demo span:nth-of-type(2) {
    padding: 8px;
    border: 1px solid var(--caution);
    border-radius: 8px;
    color: #7f4d00;
    background: #fff2d3;
}

.hangar-stack {
    display: grid;
    gap: 7px;
}

.hangar-stack span {
    padding: 12px 15px;
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--muted);
    background: var(--paper);
    font-size: 0.82rem;
}

.hangar-stack span.selected {
    border-color: rgba(10, 120, 255, 0.35);
    color: var(--radar-blue);
    background: #eaf3ff;
    font-weight: 700;
}

.field-section {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
    gap: clamp(50px, 9vw, 130px);
    align-items: center;
    color: var(--white);
    background: var(--flight-deck-deep);
    overflow: hidden;
}

.field-copy {
    max-width: 650px;
    justify-self: end;
}

.field-copy .eyebrow {
    color: var(--sky-cyan);
}

.field-copy > p {
    color: rgba(255, 255, 255, 0.58);
}

.feature-list {
    margin-top: 40px;
    border-top: 1px solid var(--dark-line);
}

.feature-list article {
    padding: 20px 0;
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 14px;
    border-bottom: 1px solid var(--dark-line);
}

.feature-list article > span {
    color: var(--sky-cyan);
    font-family: var(--mono);
    font-size: 0.68rem;
}

.feature-list h3 {
    margin: 0 0 4px;
    font-size: 1rem;
}

.feature-list p {
    margin: 0;
    color: rgba(255, 255, 255, 0.48);
    font-size: 0.82rem;
}

.field-visual {
    position: relative;
    min-height: 760px;
}

.field-screen {
    position: absolute;
    width: 330px;
    padding: 7px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 42px;
    background: #172135;
    box-shadow: 0 35px 80px rgba(0, 0, 0, 0.4);
}

.field-screen img {
    border-radius: 35px;
}

.field-screen--back {
    left: 3%;
    top: 50px;
    opacity: 0.68;
    transform: rotate(-7deg) scale(0.91);
}

.field-screen--front {
    left: 34%;
    top: 0;
    z-index: 2;
    transform: rotate(4deg);
}

.altitude-readout {
    position: absolute;
    z-index: 4;
    right: 0;
    bottom: 80px;
    width: 260px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 16px;
    background: rgba(6, 28, 68, 0.9);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.altitude-readout small {
    color: var(--sky-cyan);
    font-family: var(--mono);
    font-size: 0.63rem;
    letter-spacing: 0.12em;
}

.altitude-readout div {
    padding: 9px 0;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
}

.altitude-readout span {
    color: rgba(255, 255, 255, 0.5);
}

.airspace-section {
    display: grid;
    grid-template-columns: minmax(360px, 0.78fr) minmax(0, 1.22fr);
    gap: clamp(54px, 10vw, 150px);
    align-items: center;
    background: var(--white);
}

.airspace-map {
    position: relative;
    max-width: 460px;
    justify-self: end;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 48px;
    background: #e9eef5;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.airspace-map img {
    border-radius: 40px;
}

.map-coordinate {
    position: absolute;
    right: 24px;
    bottom: 28px;
    padding: 10px 13px;
    border-radius: 10px;
    color: var(--white);
    background: rgba(3, 19, 47, 0.82);
    font-family: var(--mono);
    font-size: 0.68rem;
    line-height: 1.4;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.airspace-copy {
    max-width: 760px;
}

.airspace-copy > p {
    color: var(--muted);
    font-size: 1.08rem;
}

.signal-list {
    margin: 34px 0;
    padding: 0;
    display: grid;
    gap: 14px;
    list-style: none;
}

.signal-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 650;
}

.platform-section {
    color: var(--white);
    background:
        radial-gradient(circle at 50% 20%, rgba(10, 120, 255, 0.23), transparent 32%),
        var(--flight-deck);
}

.platform-section .section-intro > p:last-child {
    color: rgba(255, 255, 255, 0.56);
}

.platform-section .eyebrow {
    color: var(--sky-cyan);
}

.platform-tabs {
    width: fit-content;
    margin: 0 auto 34px;
    padding: 5px;
    display: flex;
    gap: 5px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
}

.platform-tabs button {
    min-width: 120px;
    padding: 10px 18px;
    border: 0;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.55);
    background: transparent;
    cursor: pointer;
    font-weight: 700;
}

.platform-tabs button.is-active {
    color: var(--flight-deck);
    background: var(--white);
}

.store-gallery {
    max-width: 1400px;
    margin: 0 auto;
    padding: 8px 3vw 30px;
    display: grid;
    grid-auto-columns: minmax(270px, 1fr);
    grid-auto-flow: column;
    gap: 18px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline mandatory;
    scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.store-gallery[hidden] {
    display: none;
}

.store-gallery figure {
    margin: 0;
    scroll-snap-align: center;
}

.store-gallery img {
    width: 100%;
    border-radius: 28px;
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.26);
}

.store-gallery--android {
    grid-auto-columns: minmax(230px, 300px);
}

.store-gallery--android img {
    border-radius: 30px;
}

.principles-section {
    color: var(--ink);
    background: #dceeff;
}

.principles-title {
    max-width: 1320px;
    margin: 0 auto 60px;
}

.principles-grid {
    max-width: 1320px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid rgba(7, 21, 45, 0.22);
}

.principles-grid article {
    min-height: 260px;
    padding: 26px;
    border-right: 1px solid rgba(7, 21, 45, 0.22);
}

.principles-grid article:first-child {
    border-left: 1px solid rgba(7, 21, 45, 0.22);
}

.principles-grid strong {
    color: var(--radar-blue);
    font-family: var(--mono);
    font-size: 0.7rem;
}

.principles-grid h3 {
    margin: 74px 0 9px;
    font-size: 1.35rem;
}

.principles-grid p {
    margin: 0;
    color: #4f6482;
    font-size: 0.88rem;
}

.faq-section {
    background: var(--white);
}

.faq-list {
    max-width: 1000px;
    margin: 0 auto;
    border-top: 1px solid var(--line);
}

.faq-list details {
    border-bottom: 1px solid var(--line);
}

.faq-list summary {
    padding: 24px 4px;
    display: grid;
    grid-template-columns: 44px 1fr auto;
    align-items: center;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 720;
    list-style: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary > span {
    color: var(--radar-blue);
    font-family: var(--mono);
    font-size: 0.65rem;
}

.faq-list summary i {
    font-style: normal;
    font-size: 1.4rem;
    transition: transform 160ms ease;
}

.faq-list details[open] summary i {
    transform: rotate(45deg);
}

.faq-list details p {
    max-width: 760px;
    margin: -8px 0 24px 44px;
    color: var(--muted);
}

.download-section {
    position: relative;
    padding: clamp(90px, 10vw, 150px) clamp(24px, 8vw, 120px);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 40px;
    overflow: hidden;
    color: var(--white);
    background: var(--radar-blue);
}

.download-section .eyebrow {
    color: var(--white);
}

.download-section h2 {
    max-width: 900px;
}

.download-section p {
    max-width: 620px;
    color: rgba(255, 255, 255, 0.72);
}

.download-signal {
    position: absolute;
    right: -120px;
    top: -190px;
    width: 600px;
    height: 600px;
    display: grid;
    place-items: center;
    opacity: 0.18;
}

.download-signal span {
    position: absolute;
    border: 2px solid var(--white);
    border-radius: 50%;
}

.download-signal span:nth-child(1) { width: 120px; height: 120px; }
.download-signal span:nth-child(2) { width: 240px; height: 240px; }
.download-signal span:nth-child(3) { width: 360px; height: 360px; }
.download-signal span:nth-child(4) { width: 480px; height: 480px; }

.store-actions {
    position: relative;
    z-index: 2;
    display: grid;
    gap: 10px;
}

.store-button {
    min-width: 220px;
    min-height: 64px;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 15px;
    color: var(--white);
    background: var(--flight-deck-deep);
    text-decoration: none;
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.17);
    transition: transform 160ms ease, background 160ms ease;
}

a.store-button:hover {
    transform: translateY(-2px);
    background: #010b1f;
}

.store-button > span:last-child {
    display: grid;
    line-height: 1.05;
}

.store-button small {
    margin-bottom: 4px;
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.64rem;
}

.store-button strong {
    font-size: 1.12rem;
}

.store-icon {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    font-size: 1.35rem;
}

.store-icon--play {
    color: var(--safe);
    font-size: 1rem;
}

.store-button.is-coming-soon {
    color: rgba(255, 255, 255, 0.7);
    background: rgba(3, 19, 47, 0.6);
    box-shadow: none;
}

.store-button--compact {
    min-width: 190px;
    min-height: 53px;
    padding: 8px 13px;
}

.store-button--compact strong {
    font-size: 0.96rem;
}

.store-button--compact .store-icon {
    width: 26px;
}

.site-footer {
    position: relative;
    padding: 80px clamp(24px, 6vw, 88px) 28px;
    color: var(--white);
    background: var(--flight-deck-deep);
}

.footer-flightline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    display: grid;
    grid-template-columns: 3fr 2fr 1fr 0.7fr;
}

.footer-flightline span {
    display: block;
}

.footer-grid {
    max-width: 1380px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.6fr 0.7fr 0.7fr 1fr;
    gap: 50px;
}

.footer-brand p {
    max-width: 360px;
    color: rgba(255, 255, 255, 0.46);
    font-size: 0.83rem;
}

.footer-grid h2 {
    margin: 0 0 18px;
    color: rgba(255, 255, 255, 0.4);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.footer-grid > div:not(.footer-brand):not(.footer-store) a {
    margin: 8px 0;
    display: block;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.82rem;
    text-decoration: none;
}

.footer-grid a:hover {
    color: var(--white);
}

.footer-store {
    display: grid;
    align-content: start;
    gap: 8px;
}

.footer-bottom {
    max-width: 1380px;
    margin: 62px auto 0;
    padding-top: 22px;
    display: flex;
    justify-content: space-between;
    gap: 30px;
    border-top: 1px solid var(--dark-line);
    color: rgba(255, 255, 255, 0.34);
    font-size: 0.68rem;
}

.footer-bottom p {
    margin: 0;
}

/* Inner pages */
.page-main {
    background: var(--paper);
}

.page-hero {
    min-height: 500px;
    padding: 160px clamp(24px, 7vw, 100px) 90px;
    display: grid;
    align-items: end;
    color: var(--white);
    background:
        radial-gradient(circle at 82% 30%, rgba(105, 212, 231, 0.24), transparent 26%),
        var(--flight-deck);
}

.page-hero__inner {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
}

.page-hero .eyebrow {
    color: var(--sky-cyan);
}

.page-hero h1 {
    max-width: 960px;
    margin: 0;
    font-size: clamp(3.5rem, 8vw, 8rem);
}

.page-hero p:last-child {
    max-width: 720px;
    margin: 26px 0 0;
    color: rgba(255, 255, 255, 0.64);
    font-size: 1.1rem;
}

.page-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 75px 24px 120px;
}

.prose {
    max-width: 820px;
}

.prose > *:first-child {
    margin-top: 0;
}

.prose h2 {
    margin: 58px 0 16px;
    font-family: var(--display);
    font-size: clamp(1.8rem, 3vw, 2.7rem);
    letter-spacing: -0.035em;
    line-height: 1.1;
}

.prose h3 {
    margin: 34px 0 10px;
    font-size: 1.15rem;
}

.prose p,
.prose li {
    color: #43536d;
}

.prose ul,
.prose ol {
    padding-left: 24px;
}

.prose li {
    margin: 9px 0;
}

.prose a {
    color: var(--radar-blue);
    font-weight: 650;
}

.legal-meta {
    margin-bottom: 28px;
    padding: 16px 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    border: 1px solid var(--line);
    border-radius: 14px;
    color: var(--muted);
    background: var(--white);
    font-family: var(--mono);
    font-size: 0.7rem;
}

.notice-box {
    margin: 30px 0;
    padding: 24px;
    border-left: 4px solid var(--radar-blue);
    border-radius: 0 18px 18px 0;
    background: #eaf3ff;
}

.notice-box--warning {
    border-left-color: var(--caution);
    background: #fff4dc;
}

.notice-box--danger {
    border-left-color: var(--nofly);
    background: #fff0f2;
}

.notice-box h2,
.notice-box h3 {
    margin-top: 0;
}

.split-content {
    max-width: 1240px;
    margin: 0 auto;
    padding: 80px 24px 120px;
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: clamp(40px, 8vw, 110px);
}

.sticky-aside {
    position: sticky;
    top: 110px;
    align-self: start;
}

.sticky-aside h2 {
    margin: 0;
    font-family: var(--display);
    font-size: 2.1rem;
    letter-spacing: -0.04em;
    line-height: 1.08;
}

.sticky-aside p {
    color: var(--muted);
}

.about-values,
.algorithm-grid,
.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.info-card {
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--white);
}

.info-card span {
    color: var(--radar-blue);
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.12em;
}

.info-card h3 {
    margin: 28px 0 8px;
    font-size: 1.15rem;
}

.info-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
}

.contact-layout {
    max-width: 1180px;
    margin: 0 auto;
    padding: 80px 24px 120px;
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: clamp(34px, 7vw, 90px);
}

.contact-cards {
    grid-template-columns: 1fr;
}

.contact-card {
    padding: 24px;
    border-top: 1px solid var(--line);
}

.contact-card h2 {
    margin: 0 0 6px;
    font-size: 1.05rem;
}

.contact-card p {
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 0.84rem;
}

.contact-card a {
    color: var(--radar-blue);
    font-weight: 700;
    text-decoration: none;
}

.contact-form-shell {
    padding: clamp(26px, 5vw, 52px);
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: 0 20px 55px rgba(3, 19, 47, 0.08);
}

.contact-form-shell h2 {
    margin: 0 0 8px;
    font-family: var(--display);
    font-size: 2.2rem;
    letter-spacing: -0.04em;
}

.contact-form-shell > p {
    margin: 0 0 30px;
    color: var(--muted);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group {
    display: grid;
    gap: 7px;
}

.form-group--full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 750;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--ink);
    background: var(--paper);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--radar-blue);
    outline: 3px solid rgba(10, 120, 255, 0.12);
}

.honeypot {
    position: absolute !important;
    left: -9999px !important;
}

.captcha-row {
    display: flex;
    align-items: center;
    gap: 14px;
}

.captcha-row input {
    max-width: 100px;
}

.submit-button {
    min-height: 50px;
    padding: 12px 20px;
    border: 0;
    border-radius: 999px;
    color: var(--white);
    background: var(--radar-blue);
    cursor: pointer;
    font-weight: 760;
}

.submit-button:disabled {
    cursor: wait;
    opacity: 0.6;
}

.form-message {
    margin-top: 18px;
    padding: 14px;
    border-radius: 10px;
    font-size: 0.83rem;
}

.form-message.success {
    color: #086a39;
    background: #e3f8ed;
}

.form-message.error {
    color: #9a2430;
    background: #ffeaed;
}

.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

@media (max-width: 1100px) {
    .hero-grid {
        grid-template-columns: 1fr 500px;
        gap: 35px;
    }

    .hero-phone {
        right: 9%;
    }

    .briefing-layout {
        grid-template-columns: 1fr 1fr;
    }

    .briefing-card--hangar {
        grid-column: 1 / -1;
        min-height: 350px;
    }

    .field-section {
        grid-template-columns: 0.9fr 1.1fr;
        gap: 40px;
    }

    .field-screen {
        width: 285px;
    }

    .principles-grid {
        grid-template-columns: 1fr 1fr;
    }

    .principles-grid article:nth-child(3) {
        border-left: 1px solid rgba(7, 21, 45, 0.22);
    }

    .footer-grid {
        grid-template-columns: 1.4fr 0.8fr 0.8fr;
    }

    .footer-store {
        grid-column: 1 / -1;
        grid-template-columns: repeat(2, max-content);
    }

    .footer-store h2 {
        grid-column: 1 / -1;
    }
}

@media (max-width: 900px) {
    .site-header {
        padding: 12px 18px;
    }

    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        inset: 0;
        z-index: -1;
        padding: 110px 32px 40px;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: center;
        gap: 0;
        background: rgba(3, 19, 47, 0.98);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-15px);
        transition: opacity 180ms ease, transform 180ms ease;
    }

    .nav-menu.is-open {
        z-index: -1;
        opacity: 1;
        pointer-events: auto;
        transform: none;
    }

    .nav-menu a {
        padding: 13px 0;
        border-bottom: 1px solid var(--dark-line);
        font-size: 1.15rem;
    }

    .nav-menu .nav-cta {
        margin-top: 18px;
        padding: 13px 18px;
        text-align: center;
    }

    .nav-toggle[aria-expanded="true"] > span:nth-child(1) {
        transform: translateY(3.5px) rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] > span:nth-child(2) {
        transform: translateY(-3.5px) rotate(-45deg);
    }

    .hero {
        padding-top: 130px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        max-width: 700px;
    }

    .hero-stage {
        width: min(100%, 600px);
        margin: 0 auto;
    }

    .decision-rail {
        grid-template-columns: 1fr;
    }

    .decision-rail > div {
        min-height: 82px;
        border-right: 0;
        border-bottom: 1px solid var(--dark-line);
    }

    .field-section,
    .airspace-section {
        grid-template-columns: 1fr;
    }

    .field-copy {
        max-width: none;
        justify-self: auto;
    }

    .field-visual {
        width: min(100%, 650px);
        margin: 0 auto;
    }

    .airspace-map {
        max-width: 430px;
        justify-self: center;
        order: 2;
    }

    .airspace-copy {
        order: 1;
    }

    .download-section {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .store-actions {
        grid-template-columns: repeat(2, minmax(0, 250px));
    }

    .split-content,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .sticky-aside {
        position: static;
    }
}

@media (max-width: 680px) {
    .hero {
        min-height: 0;
        padding: 116px 18px 64px;
    }

    .hero h1 {
        font-size: clamp(4rem, 21vw, 6.2rem);
    }

    .hero-stage {
        min-height: 600px;
    }

    .hero-phone {
        width: 285px;
        right: 8%;
    }

    .briefing-stamp {
        left: 0;
        width: 156px;
    }

    .metric-chip {
        width: 128px;
        padding: 11px 12px;
    }

    .metric-chip--wind {
        left: -2px;
        top: 215px;
    }

    .metric-chip--gust {
        right: -4px;
        top: 155px;
    }

    .verdict-console {
        right: 0;
        bottom: 14px;
        width: 100%;
    }

    .section {
        padding: 82px 18px;
    }

    .section h2,
    .download-section h2 {
        font-size: clamp(2.8rem, 14vw, 4.5rem);
    }

    .briefing-layout {
        grid-template-columns: 1fr;
    }

    .briefing-card,
    .briefing-card--hangar {
        min-height: 360px;
        grid-column: auto;
    }

    .field-section {
        padding-bottom: 35px;
    }

    .field-visual {
        min-height: 650px;
    }

    .field-screen {
        width: 248px;
    }

    .field-screen--back {
        left: -13%;
    }

    .field-screen--front {
        left: 25%;
    }

    .altitude-readout {
        right: -10px;
        bottom: 40px;
        width: 225px;
    }

    .airspace-map {
        border-radius: 35px;
    }

    .airspace-map img {
        border-radius: 28px;
    }

    .platform-section {
        padding-left: 0;
        padding-right: 0;
    }

    .platform-section .section-intro {
        padding: 0 18px;
    }

    .store-gallery {
        grid-auto-columns: 82vw;
        padding-left: 18px;
        padding-right: 18px;
    }

    .store-gallery--android {
        grid-auto-columns: 70vw;
    }

    .principles-grid {
        grid-template-columns: 1fr;
    }

    .principles-grid article,
    .principles-grid article:first-child,
    .principles-grid article:nth-child(3) {
        min-height: 220px;
        border-left: 1px solid rgba(7, 21, 45, 0.22);
    }

    .principles-grid h3 {
        margin-top: 50px;
    }

    .faq-list summary {
        grid-template-columns: 35px 1fr auto;
        font-size: 0.96rem;
    }

    .faq-list details p {
        margin-left: 35px;
    }

    .download-section {
        padding: 84px 18px;
    }

    .store-actions {
        grid-template-columns: 1fr;
    }

    .store-button {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 38px 24px;
    }

    .footer-brand,
    .footer-store {
        grid-column: 1 / -1;
    }

    .footer-store {
        grid-template-columns: 1fr;
    }

    .footer-store h2 {
        grid-column: auto;
    }

    .footer-bottom {
        flex-direction: column;
    }

    .page-hero {
        min-height: 440px;
        padding: 135px 18px 70px;
    }

    .page-hero h1 {
        font-size: clamp(3.3rem, 17vw, 5rem);
    }

    .page-content,
    .split-content,
    .contact-layout {
        padding-left: 18px;
        padding-right: 18px;
    }

    .about-values,
    .algorithm-grid,
    .contact-cards,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-group--full {
        grid-column: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}