:root {
    --ink: #04080f;
    --ink-2: #0a1422;
    --line: rgba(92, 250, 224, 0.14);
    --mint: #5cfae0;
    --mint-dim: rgba(92, 250, 224, 0.55);
    --coral: #ff5a6b;
    --gold: #ffcc4d;
    --violet: #b380ff;
    --toxic: #9ef24d;
    --text: #eef6f8;
    --muted: rgba(238, 246, 248, 0.62);
    --round: ui-rounded, "SF Pro Rounded", "Nunito", system-ui, sans-serif;
    --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    color-scheme: dark;
}
* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: var(--ink);
    color: var(--text);
    font:
        16px/1.55 system-ui,
        -apple-system,
        "Segoe UI",
        sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img,
video {
    max-width: 100%;
    display: block;
  height: auto;
}
a {
    color: var(--mint);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
#stars {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}
.wrap {
    width: min(1120px, 100% - 40px);
    margin-inline: auto;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: linear-gradient(
        to bottom,
        rgba(4, 8, 15, 0.85),
        rgba(4, 8, 15, 0.4)
    );
    border-bottom: 1px solid var(--line);
}
.nav .wrap {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 64px;
    padding-top: env(safe-area-inset-top, 0px);
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font: 800 18px/1 var(--round);
    letter-spacing: 0.02em;
}
.brand img {
    width: 34px;
    height: 34px;
    border-radius: 9px;
}
.brand:hover {
    text-decoration: none;
}
.nav nav {
    display: flex;
    gap: 22px;
    margin-left: auto;
    font: 600 12px/1 var(--mono);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.nav nav a {
    color: var(--muted);
}
.nav nav a:hover {
    color: var(--mint);
    text-decoration: none;
}
.lang {
    appearance: none;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 7px 12px;
    font: 600 12px/1 var(--mono);
    cursor: pointer;
}
@media (max-width: 720px) {
    .nav nav {
        display: none;
    }
    .lang {
        margin-left: auto;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    border-radius: 16px;
    font: 800 15px/1 var(--round);
    border: 1px solid transparent;
    cursor: pointer;
    transition:
        transform 0.15s,
        box-shadow 0.2s;
}
.btn:hover {
    text-decoration: none;
    transform: translateY(-2px);
}
.btn-primary {
    background: var(--mint);
    color: var(--ink);
    box-shadow:
        0 0 0 0 rgba(92, 250, 224, 0.4),
        0 10px 40px rgba(92, 250, 224, 0.25);
}
.btn-primary:hover {
    box-shadow:
        0 0 0 6px rgba(92, 250, 224, 0.12),
        0 14px 50px rgba(92, 250, 224, 0.35);
}
.btn-primary small {
    display: block;
    font: 600 10px/1.2 var(--mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.7;
}
.btn-ghost {
    border-color: var(--line);
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}
.btn svg {
    width: 22px;
    height: 22px;
    flex: none;
}

/* Hero */
.hero {
    padding: 32px 0 40px;
}
.hero .wrap {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
}
.hero h1 {
    margin: 0;
}
.hero h1 img {
    width: min(330px, 70%);
    filter: drop-shadow(0 20px 60px rgba(92, 250, 224, 0.25));
    animation: hover 6s ease-in-out infinite;
}
@keyframes hover {
    50% {
        transform: translateY(-10px) rotate(-1deg);
    }
}
.tagline {
    font: 700 13px/1.4 var(--mono);
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--mint);
    margin: 18px 0 10px;
}
.lead {
    font-size: clamp(18px, 2.2vw, 22px);
    color: var(--muted);
    max-width: 30ch;
    margin: 0 0 30px;
}
.cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}
.phone {
    position: relative;
    justify-self: center;
    width: min(290px, 74vw, 34vh);
    aspect-ratio: 1320 / 2868;
    border-radius: 44px;
    padding: 10px;
    background: linear-gradient(145deg, #1b2a3a, #070d16);
    box-shadow:
        0 0 0 1px rgba(92, 250, 224, 0.25),
        0 40px 120px rgba(92, 250, 224, 0.18),
        0 30px 80px rgba(0, 0, 0, 0.6);
    transform: perspective(1200px) rotateY(-10deg) rotateX(4deg);
    transition: transform 0.4s;
}
.phone:hover {
    transform: perspective(1200px) rotateY(0) rotateX(0);
}
.phone video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 35px;
    background: var(--ink);
}
.phone::after {
    content: "";
    position: absolute;
    top: 18px;
    left: 50%;
    width: 30%;
    height: 22px;
    transform: translateX(-50%);
    background: #000;
    border-radius: 20px;
}
@media (max-width: 860px) {
    .hero .wrap {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero h1 img,
    .lead {
        margin-inline: auto;
    }
    .cta {
        justify-content: center;
    }
    .phone {
        transform: none;
    }
}

/* Sections */
section {
    padding: 72px 0;
}
.kicker {
    font: 700 12px/1 var(--mono);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--mint);
    margin: 0 0 14px;
}
h2 {
    font: 900 clamp(32px, 5vw, 56px)/1.05 var(--round);
    letter-spacing: -0.02em;
    margin: 0 0 18px;
}
h2 em {
    font-style: normal;
    color: var(--mint);
    text-shadow: 0 0 30px rgba(92, 250, 224, 0.5);
}
.sub {
    color: var(--muted);
    max-width: 60ch;
    margin: 0 0 40px;
    font-size: 18px;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.step {
    position: relative;
    padding: 28px;
    border-radius: 24px;
    border: 1px solid var(--line);
    background: linear-gradient(
        160deg,
        rgba(92, 250, 224, 0.08),
        rgba(255, 255, 255, 0.02)
    );
    overflow: hidden;
}
.step b {
    display: block;
    font: 900 64px/1 var(--round);
    color: rgba(92, 250, 224, 0.16);
    position: absolute;
    right: 18px;
    top: 12px;
}
.step h3 {
    font: 800 22px/1.2 var(--round);
    margin: 0 0 8px;
}
.step p {
    margin: 0;
    color: var(--muted);
}
.step:nth-child(2) {
    background: linear-gradient(
        160deg,
        rgba(255, 90, 107, 0.1),
        rgba(255, 255, 255, 0.02)
    );
    border-color: rgba(255, 90, 107, 0.2);
}
.step:nth-child(2) b {
    color: rgba(255, 90, 107, 0.2);
}
@media (max-width: 860px) {
    .steps {
        grid-template-columns: 1fr;
    }
}

/* Demo */
.demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.arena {
    position: relative;
    width: 100%;
    max-width: 440px;
    aspect-ratio: 3 / 4;
    justify-self: center;
    border-radius: 28px;
    overflow: hidden;
    border: 1px solid var(--line);
    background: radial-gradient(circle at 50% 40%, #0d2230, var(--ink) 70%);
    touch-action: none;
    user-select: none;
    box-shadow:
        0 30px 100px rgba(0, 0, 0, 0.5),
        inset 0 0 0 1px rgba(255, 255, 255, 0.03);
    cursor: grab;
}
.arena:active {
    cursor: grabbing;
}
.arena canvas {
    width: 100%;
    height: 100%;
    display: block;
}
.arena .hud {
    position: absolute;
    inset: 14px 16px auto;
    display: flex;
    justify-content: space-between;
    font: 700 12px/1 var(--mono);
    letter-spacing: 0.14em;
    color: var(--muted);
    pointer-events: none;
}
.arena .hud strong {
    color: var(--text);
    font-size: 18px;
}
.arena .msg {
    position: absolute;
    inset: auto 0 22px;
    text-align: center;
    font: 700 13px/1.4 var(--mono);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mint);
    pointer-events: none;
    padding: 0 16px;
}
.arena .msg.bad {
    color: var(--coral);
}
@media (max-width: 860px) {
    .demo {
        grid-template-columns: 1fr;
    }
}

/* Features */
.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.card {
    padding: 24px;
    border-radius: 22px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.025);
    transition:
        transform 0.2s,
        border-color 0.2s,
        background 0.2s;
}
.card:hover {
    transform: translateY(-4px);
    border-color: rgba(92, 250, 224, 0.4);
    background: rgba(92, 250, 224, 0.05);
}
.card .ico {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-size: 22px;
    margin-bottom: 16px;
}
.card h3 {
    font: 800 18px/1.25 var(--round);
    margin: 0 0 6px;
}
.card p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
}
@media (max-width: 1000px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 560px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

/* Screenshots */
.shots {
    display: flex;
    gap: 18px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 10px 20px 26px;
    margin-inline: -20px;
    scrollbar-width: thin;
}
.shots img {
    flex: none;
    width: 230px;
    aspect-ratio: 1320 / 2868;
    object-fit: cover;
    border-radius: 26px;
    scroll-snap-align: center;
    border: 1px solid var(--line);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* Final call */
.final {
    text-align: center;
}
.final .wrap {
    padding: 60px 28px;
    border-radius: 36px;
    border: 1px solid var(--line);
    background:
        radial-gradient(
            circle at 50% 0%,
            rgba(92, 250, 224, 0.18),
            transparent 60%
        ),
        rgba(255, 255, 255, 0.02);
}
.final img {
    width: 120px;
    height: 120px;
    border-radius: 28px;
    margin: 0 auto 22px;
    box-shadow: 0 20px 60px rgba(92, 250, 224, 0.3);
}
.final .cta {
    justify-content: center;
}

/* Footer */
footer {
    padding: 40px 0 calc(40px + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
}
footer .wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 18px 28px;
    align-items: center;
}
footer .links {
    display: flex;
    gap: 22px;
    margin-left: auto;
}

/* Document pages */
.doc {
    padding: 56px 0 80px;
}
.doc .wrap {
    width: min(760px, 100% - 40px);
}
.doc h1 {
    font: 900 clamp(32px, 5vw, 48px)/1.1 var(--round);
    margin: 0 0 8px;
}
.doc .date {
    color: var(--muted);
    font: 600 13px/1 var(--mono);
    letter-spacing: 0.1em;
    margin-bottom: 32px;
}
.doc h2 {
    font: 800 22px/1.3 var(--round);
    margin: 32px 0 8px;
}
.doc p,
.doc li {
    color: rgba(238, 246, 248, 0.82);
}
.doc ul {
    padding-left: 20px;
}
[hidden] {
    display: none !important;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 0.7s ease,
        transform 0.7s ease;
}
.reveal.in {
    opacity: 1;
    transform: none;
}
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .hero h1 img {
        animation: none;
    }
    html {
        scroll-behavior: auto;
    }
}

footer .links { flex-wrap: wrap; }
@media (max-width: 560px) { footer .links { margin-left: 0; gap: 14px 22px; } }