/* Countless — graphite and volt. Tokens mirror the app's design system. */
:root {
    --bg: #0b0c0f;
    --surface: #15171c;
    --raised: #1d2026;
    --border: #262a31;
    --volt: #c3ff3d;
    --volt-press: #9fd62b;
    --volt-dim: #2a3a12;
    --volt-soft: #e1ffa1;
    --text: #f2f4ec;
    --muted: #9ba1a8;

    --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    --rounded: ui-rounded, "SF Pro Rounded", var(--font);

    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 24px;
    --maxw: 1120px;
    --gutter: clamp(16px, 4vw, 32px);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 76px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
}

h1,
h2,
h3,
p {
    margin: 0;
}

:focus-visible {
    outline: 2px solid var(--volt);
    outline-offset: 3px;
    border-radius: 6px;
}

.skip {
    position: absolute;
    left: 12px;
    top: -60px;
    z-index: 100;
    padding: 10px 16px;
    background: var(--volt);
    color: var(--bg);
    font-weight: 600;
    border-radius: 999px;
    text-decoration: none;
}
.skip:focus {
    top: 12px;
}

.wrap {
    width: 100%;
    max-width: calc(var(--maxw) + var(--gutter) * 2);
    margin-inline: auto;
    padding-inline: var(--gutter);
}
.wrap.narrow {
    max-width: calc(780px + var(--gutter) * 2);
}
.center {
    text-align: center;
}

.volt {
    color: var(--volt);
}
.nb {
    white-space: nowrap;
}

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11, 12, 15, 0.72);
    -webkit-backdrop-filter: saturate(1.4) blur(18px);
    backdrop-filter: saturate(1.4) blur(18px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.25s;
}
.site-header.scrolled {
    border-bottom-color: var(--border);
}
.bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 64px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.01em;
}
.brand img {
    border-radius: 22%;
}
.nav {
    display: none;
    gap: 28px;
    font-size: 15px;
    color: var(--muted);
}
.nav a {
    text-decoration: none;
    transition: color 0.2s;
}
.nav a:hover {
    color: var(--text);
}
/* Six nav items only fit from about 820px; below that the footer link covers the guide. */
@media (min-width: 720px) and (max-width: 819px) {
    .nav-guide {
        display: none;
    }
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 44px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    background: var(--volt);
    color: var(--bg);
    font: 650 16px/1 var(--font);
    text-decoration: none;
    cursor: pointer;
    box-shadow: 0 10px 40px -12px rgba(195, 255, 61, 0.55);
    transition: transform 0.15s, background 0.15s, box-shadow 0.2s;
}
.btn:hover {
    background: var(--volt-soft);
    transform: translateY(-1px);
}
.btn:active {
    background: var(--volt-press);
    transform: none;
}
.btn svg {
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.btn-sm {
    height: 38px;
    padding: 0 18px;
    font-size: 15px;
}
.btn-lg {
    height: 56px;
    padding: 0 28px;
    font-size: 17px;
}
.btn-ghost {
    background: var(--surface);
    color: var(--text);
    box-shadow: inset 0 0 0 1px var(--border);
}
.btn-ghost:hover {
    background: var(--raised);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    overflow: hidden;
    padding-block: clamp(40px, 8vw, 96px) clamp(56px, 9vw, 112px);
}
.hero::before,
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.hero::before {
    background: radial-gradient(55% 55% at 78% 35%, rgba(195, 255, 61, 0.13), transparent 70%),
        radial-gradient(40% 40% at 8% 0%, rgba(195, 255, 61, 0.06), transparent 70%);
}
.hero::after {
    background-image: radial-gradient(rgba(195, 255, 61, 0.22) 1px, transparent 1.6px);
    background-size: 30px 30px;
    -webkit-mask-image: radial-gradient(60% 60% at 78% 38%, #000, transparent 75%);
    mask-image: radial-gradient(60% 60% at 78% 38%, #000, transparent 75%);
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 56px;
    align-items: center;
}
.chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 30px;
    padding: 0 14px;
    border-radius: 999px;
    background: var(--volt-dim);
    color: var(--volt);
    font-size: 12px;
    font-weight: 650;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.chip .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--volt);
    box-shadow: 0 0 10px var(--volt);
}
h1 {
    margin-top: 22px;
    font-size: clamp(2.7rem, 6.2vw, 5rem);
    line-height: 1;
    font-weight: 800;
    letter-spacing: -0.04em;
}
.lead {
    margin-top: 22px;
    max-width: 34em;
    font-size: clamp(1.05rem, 2.2vw, 1.25rem);
    line-height: 1.5;
    color: var(--muted);
}
.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}
.trust {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 22px;
    margin: 26px 0 0;
    padding: 0;
    list-style: none;
    font-size: 14px;
    color: var(--muted);
}
.trust li::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-right: 8px;
    border-radius: 50%;
    background: var(--volt);
    vertical-align: 2px;
}
.hero-visual {
    display: flex;
    justify-content: center;
}

/* ---------- Phone frame ---------- */
.phone {
    --pw: 280px;
    position: relative;
    flex: none;
    width: var(--pw);
    aspect-ratio: 660 / 1434;
    padding: 7px;
    border-radius: calc(var(--pw) * 0.15);
    background: linear-gradient(160deg, #2b2f37, #14161b 60%);
    box-shadow: 0 0 0 1px #30353d, 0 40px 80px -24px rgba(0, 0, 0, 0.85), 0 0 140px -40px rgba(195, 255, 61, 0.28);
}
.phone .screen {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: calc(var(--pw) * 0.15 - 7px);
    background: #000;
}
.phone .screen img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
#hero-screens img {
    opacity: 0;
    transition: opacity 0.9s ease;
}
#hero-screens img.on {
    opacity: 1;
}

/* ---------- Sections ---------- */
.section {
    padding-block: clamp(64px, 10vw, 120px);
}
.section.alt {
    background: linear-gradient(180deg, #0e1014, #0b0c0f);
    border-block: 1px solid var(--border);
}
.section-head {
    margin-bottom: clamp(32px, 5vw, 56px);
    max-width: 22em;
}
.section-head.center {
    margin-inline: auto;
    text-align: center;
}
.eyebrow {
    margin-bottom: 14px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--volt);
}
h2 {
    font-size: clamp(1.9rem, 4.6vw, 3rem);
    line-height: 1.08;
    font-weight: 780;
    letter-spacing: -0.03em;
}
h3 {
    font-size: 19px;
    line-height: 1.3;
    font-weight: 650;
    letter-spacing: -0.01em;
}
.fine {
    max-width: 44em;
    margin: 28px auto 0;
    font-size: 14px;
    line-height: 1.55;
    color: var(--muted);
}
.fine.center {
    margin-inline: auto;
}
.site-footer .fine {
    margin: 6px 0 0;
}
.text-link {
    color: var(--volt);
    font-weight: 600;
    text-decoration: none;
}
.text-link:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* ---------- How it works ---------- */
.how-grid {
    display: grid;
    gap: 48px;
    align-items: center;
}
.demo {
    position: relative;
    width: min(100%, 440px);
    aspect-ratio: 1;
    margin-inline: auto;
    border-radius: var(--r-lg);
    background: radial-gradient(70% 70% at 50% 50%, #12150d, var(--surface));
    border: 1px solid var(--border);
    overflow: hidden;
}
.demo canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.demo-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.demo-count {
    font-family: var(--rounded);
    font-weight: 800;
    font-size: clamp(5rem, 22vw, 8.5rem);
    line-height: 1;
    letter-spacing: -0.04em;
    font-variant-numeric: tabular-nums;
}
.how-copy h2 {
    max-width: 14em;
}
.steps {
    display: grid;
    gap: 26px;
    margin: 36px 0 0;
    padding: 0;
    list-style: none;
}
.steps li {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 18px;
}
.num {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--volt-dim);
    color: var(--volt);
    font: 800 18px/1 var(--rounded);
}
.steps p {
    margin-top: 4px;
    color: var(--muted);
    font-size: 16px;
}

/* ---------- Feature cards ---------- */
.cards {
    display: grid;
    gap: 16px;
}
.card {
    padding: 28px;
    border-radius: var(--r-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    transition: border-color 0.25s, transform 0.25s;
}
.card:hover {
    border-color: rgba(195, 255, 61, 0.4);
}
.card p {
    margin-top: 8px;
    font-size: 16px;
    color: var(--muted);
}
.ico {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    margin-bottom: 20px;
    border-radius: 14px;
    background: var(--volt-dim);
}
.ico.lg {
    width: 56px;
    height: 56px;
    border-radius: 18px;
}
.ico svg {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: var(--volt);
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.tag {
    display: inline-block;
    margin-left: 6px;
    padding: 2px 9px;
    border-radius: 999px;
    background: var(--volt-dim);
    color: var(--volt);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    vertical-align: 2px;
}

/* ---------- Gallery ---------- */
.gallery-track {
    display: flex;
    gap: 28px;
    padding: 16px max(var(--gutter), calc((100vw - var(--maxw)) / 2)) 56px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: max(var(--gutter), calc((100vw - var(--maxw)) / 2));
    scrollbar-width: none;
}
.gallery-track::-webkit-scrollbar {
    display: none;
}
.gallery .phone {
    box-shadow: 0 0 0 1px #30353d, 0 24px 40px -20px rgba(0, 0, 0, 0.8);
}
.gallery figure {
    flex: none;
    margin: 0;
    scroll-snap-align: start;
}
.gallery figcaption {
    width: 250px;
    margin-top: 22px;
    font-size: 15px;
    line-height: 1.4;
    color: var(--muted);
}
.gallery figcaption strong {
    display: block;
    margin-bottom: 2px;
    font-size: 17px;
    color: var(--text);
}
.gallery-ctrl {
    display: none;
    justify-content: flex-end;
    gap: 10px;
}
.arrow {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}
.arrow:hover {
    background: var(--raised);
    border-color: rgba(195, 255, 61, 0.45);
}
.arrow svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ---------- Privacy ---------- */
.privacy {
    display: grid;
    gap: 40px;
    align-items: center;
}
.privacy h2 {
    max-width: 12em;
}
.privacy .lead {
    margin-bottom: 22px;
}
.checks {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.checks li {
    position: relative;
    padding: 18px 22px 18px 48px;
    border-radius: var(--r-md);
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 16px;
}
.checks li::before {
    content: "";
    position: absolute;
    left: 22px;
    top: 26px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--volt);
    box-shadow: 0 0 12px rgba(195, 255, 61, 0.7);
}
.checks strong {
    color: var(--text);
    font-weight: 650;
}

/* ---------- Headphones ---------- */
.pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.pills li {
    padding: 12px 20px;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    font-size: 16px;
    font-weight: 550;
}

/* ---------- Plans ---------- */
.plans {
    display: grid;
    gap: 16px;
    max-width: 880px;
    margin-inline: auto;
}
.plan {
    padding: 32px;
    border-radius: var(--r-lg);
    background: var(--surface);
    border: 1px solid var(--border);
}
.plan.pro {
    background: linear-gradient(180deg, #1a2208, var(--surface) 70%);
    border-color: rgba(195, 255, 61, 0.45);
    box-shadow: 0 30px 80px -40px rgba(195, 255, 61, 0.35);
}
.plan h3 {
    font-size: 24px;
    letter-spacing: -0.02em;
}
.plan.pro h3 {
    color: var(--volt);
}
.plan-sub {
    margin-top: 4px;
    color: var(--muted);
    font-size: 16px;
}
.plan ul {
    display: grid;
    gap: 14px;
    margin: 26px 0 0;
    padding: 0;
    list-style: none;
}
.plan li {
    display: grid;
    grid-template-columns: 22px 1fr;
    gap: 12px;
    font-size: 16px;
}
.plan li::before {
    content: "";
    width: 22px;
    height: 22px;
    margin-top: 1px;
    border-radius: 50%;
    background: var(--volt-dim)
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C3FF3D' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E")
        center / 14px no-repeat;
}

/* ---------- FAQ ---------- */
.faq {
    border-top: 1px solid var(--border);
}
.faq details {
    border-bottom: 1px solid var(--border);
}
.faq summary {
    position: relative;
    padding: 22px 44px 22px 0;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    list-style: none;
    cursor: pointer;
}
.faq summary::-webkit-details-marker {
    display: none;
}
.faq summary::after {
    content: "";
    position: absolute;
    right: 4px;
    top: 50%;
    width: 10px;
    height: 10px;
    margin-top: -7px;
    border-right: 2px solid var(--volt);
    border-bottom: 2px solid var(--volt);
    transform: rotate(45deg);
    transition: transform 0.25s;
}
.faq details[open] summary::after {
    transform: rotate(-135deg);
    margin-top: -2px;
}
.faq details p {
    padding: 0 44px 24px 0;
    color: var(--muted);
    font-size: 16px;
}

/* ---------- Support ---------- */
#support .lead {
    margin-inline: auto;
}
.support-cta {
    margin-top: 32px;
}

/* ---------- Final CTA ---------- */
.final {
    position: relative;
    overflow: hidden;
    padding-block: clamp(72px, 11vw, 132px);
    text-align: center;
}
.final::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(50% 70% at 50% 100%, rgba(195, 255, 61, 0.16), transparent 70%);
    pointer-events: none;
}
.final .wrap {
    position: relative;
}
.final-icon {
    margin: 0 auto 28px;
    border-radius: 22%;
    box-shadow: 0 0 0 1px var(--border), 0 24px 60px -16px rgba(195, 255, 61, 0.35);
}
.final h2 {
    font-size: clamp(2.2rem, 6.5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.035em;
}
.final p {
    margin-top: 32px;
}

/* ---------- Footer ---------- */
.site-footer {
    padding-block: 40px 56px;
    border-top: 1px solid var(--border);
}
.foot-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 24px;
}
.foot-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 28px;
    font-size: 15px;
    color: var(--muted);
}
.foot-links a {
    text-decoration: none;
}
.foot-links a:hover {
    color: var(--text);
}
.legal {
    max-width: 62em;
    margin-top: 32px;
    font-size: 12.5px;
    line-height: 1.6;
    color: #6d737b;
}

/* ---------- Reveal on scroll ---------- */
.js .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.js .reveal.in {
    opacity: 1;
    transform: none;
}

/* ---------- Breakpoints ---------- */
@media (min-width: 720px) {
    .nav {
        display: flex;
    }
    .cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .plans {
        grid-template-columns: 1fr 1fr;
    }
    .gallery-ctrl {
        display: flex;
    }
}

@media (min-width: 960px) {
    .hero-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }
    .hero-visual .phone {
        --pw: 330px !important;
    }
    .how-grid {
        grid-template-columns: 0.9fr 1.1fr;
        gap: 80px;
    }
    .cards {
        grid-template-columns: repeat(3, 1fr);
    }
    .privacy {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 80px;
    }
}

@media (hover: none) {
    .gallery-ctrl {
        display: none;
    }
}

@media (max-width: 420px) {
    .cta-row .btn {
        width: 100%;
    }
    .hero-visual .phone {
        --pw: 250px !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    .js .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    #hero-screens img {
        transition: none;
    }
}