:root {
    --bg: #0B1220;
    --bg2: #0F1B33;
    --card: #0F1930;
    --muted: #A9B4CC;
    --text: #EAF0FF;
    --line: rgba(255, 255, 255, .10);
    --shadow: 0 20px 60px rgba(0, 0, 0, .45);

    --radius: 18px;
    --p1: #6EE7FF;
    --p2: #A78BFA;
    --p3: #34D399;
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

html[data-theme="dark"] {
    color-scheme: dark;
}

html[data-theme="light"] {
    color-scheme: light;
    --text: #0F172A;
    --line: rgba(15, 23, 42, .14);
    --shadow: 0 18px 50px rgba(15, 23, 42, .10);
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 20% 0%, rgba(110, 231, 255, .18), transparent 60%),
        radial-gradient(1000px 600px at 80% 10%, rgba(167, 139, 250, .18), transparent 55%),
        radial-gradient(1000px 700px at 50% 100%, rgba(52, 211, 153, .10), transparent 55%),
        linear-gradient(180deg, var(--bg), #070B14 70%);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none
}

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

strong {
    font-weight: 800
}

.container {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.skip {
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip:focus {
    left: 16px;
    top: 16px;
    width: auto;
    height: auto;
    background: #fff;
    color: #000;
    padding: 10px 12px;
    border-radius: 10px;
    z-index: 9999;
}

.mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    background: rgba(11, 18, 32, .55);
    border-bottom: 1px solid var(--line);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -.02em;
}

.brand__logo {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

.brand__stack {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand__name {
    font-size: 15px;
    font-weight: 900
}

.brand__by {
    font-size: 12px;
    color: rgba(234, 240, 255, .70);
    margin-top: 3px;
}

.brand__dot {
    color: var(--p1)
}

.brand--small .brand__logo {
    width: 30px;
    height: 30px
}

.nav {
    display: flex;
    gap: 18px;
    align-items: center;
    color: rgba(234, 240, 255, .86);
}

.nav a {
    font-size: 14px;
    padding: 8px 10px;
    border-radius: 12px;
}

.nav a:hover {
    background: rgba(255, 255, 255, .06)
}

.header__actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid var(--line);
    padding: 10px 14px;
    border-radius: 14px;
    font-weight: 800;
    font-size: 14px;
    background: rgba(255, 255, 255, .04);
    color: var(--text);
    cursor: pointer;
    transition: transform .12s ease, background .12s ease, border-color .12s ease;
}

.btn:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, .18)
}

.btn--primary {
    background: linear-gradient(90deg, rgba(110, 231, 255, .20), rgba(167, 139, 250, .20));
    border-color: rgba(110, 231, 255, .25);
}

.btn--ghost {
    background: rgba(255, 255, 255, .03)
}

.btn--full {
    width: 100%
}

.btn--lg {
    padding: 12px 16px;
    border-radius: 16px
}

.btn__arrow {
    opacity: .9
}

.burger {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    display: none;
    cursor: pointer;
}

.burger span {
    display: block;
    width: 18px;
    height: 2px;
    background: rgba(234, 240, 255, .88);
    margin: 4px auto;
    border-radius: 2px;
}

.theme-toggle {
    min-width: 70px;
    height: 44px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    color: var(--text);
    font-weight: 900;
    font-size: 12px;
    letter-spacing: .03em;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform .12s ease, background .12s ease, border-color .12s ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, .18);
}

/* HERO */
.hero {
    position: relative;
    padding: 56px 0 24px;
}

.hero__grid {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    gap: 24px;
    align-items: start;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, .03);
    color: rgba(234, 240, 255, .86);
    font-weight: 800;
    font-size: 13px;
}

.badge .dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--p1), var(--p2));
    box-shadow: 0 0 0 6px rgba(110, 231, 255, .10);
}

h1 {
    margin: 14px 0 12px;
    font-size: clamp(34px, 4.2vw, 52px);
    line-height: 1.05;
    letter-spacing: -.03em;
}

.grad {
    background: linear-gradient(90deg, var(--p1), var(--p2), var(--p3));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lead {
    margin: 0;
    color: rgba(234, 240, 255, .78);
    font-size: 16px;
    line-height: 1.6;
}

.hero__cta {
    display: flex;
    gap: 12px;
    margin: 18px 0 10px;
    flex-wrap: wrap;
}

.trust {
    margin: 12px 0 2px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.trust__item {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    padding: 8px 10px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 12px;
    color: rgba(234, 240, 255, .78);
}

.hero__stats {
    margin-top: 16px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255, 255, 255, .03);
}

.stat__num {
    font-size: 18px
}

.stat__txt strong {
    display: block;
    font-size: 14px
}

.stat__txt span {
    display: block;
    color: rgba(234, 240, 255, .70);
    font-size: 12px;
    margin-top: 2px
}

/* VISUAL */
.hero__visual .glass {
    border: 1px solid var(--line);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
    box-shadow: var(--shadow);
    overflow: hidden;
}

.glass__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 14px 10px;
    border-bottom: 1px solid var(--line);
}

.mini-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mini-brand img {
    width: 30px;
    height: 30px;
    border-radius: 12px
}

.mini-brand__txt {
    display: flex;
    flex-direction: column;
    line-height: 1.1
}

.mini-brand__txt span {
    font-size: 12px;
    color: rgba(234, 240, 255, .70);
    margin-top: 3px
}

.pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end
}

.pill {
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    color: rgba(234, 240, 255, .78);
    font-weight: 800;
}

.mock {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 12px;
    padding: 14px;
}

.mock__title {
    font-weight: 900;
    font-size: 13px;
    color: rgba(234, 240, 255, .88);
    margin-bottom: 10px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.card {
    text-align: left;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 16px;
    cursor: pointer;
    transition: transform .12s ease, border-color .12s ease, background .12s ease;
}

.card:hover {
    transform: translateY(-1px);
    border-color: rgba(110, 231, 255, .25)
}

.card span {
    display: block;
    font-weight: 900;
    font-size: 13px
}

.card small {
    display: block;
    margin-top: 4px;
    color: rgba(234, 240, 255, .70);
    font-weight: 800
}

.searchline {
    margin-top: 10px;
    border: 1px dashed rgba(255, 255, 255, .16);
    border-radius: 16px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(234, 240, 255, .72);
    background: rgba(255, 255, 255, .02);
    font-weight: 800;
    font-size: 12px;
}

.searchline__icon {
    opacity: .9
}

.list {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .02);
    border-radius: 16px;
    padding: 10px;
    display: grid;
    gap: 8px;
}

.row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-size: 13px;
    color: rgba(234, 240, 255, .84);
}

.total {
    margin: 10px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 16px;
    border: 1px solid rgba(110, 231, 255, .18);
    background: rgba(110, 231, 255, .06);
}

.total strong {
    font-size: 14px
}

.kbd {
    margin-top: 10px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .02);
    border-radius: 16px;
    padding: 10px;
}

.kbd__title {
    font-weight: 900;
    font-size: 12px;
    color: rgba(234, 240, 255, .78);
    margin-bottom: 8px;
}

.kbd__grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 6px;
}

.key {
    text-align: center;
    padding: 8px 0;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, .10);
    background: rgba(255, 255, 255, .03);
    font-size: 11px;
    font-weight: 900;
    color: rgba(234, 240, 255, .86);
}

.key--wide {
    grid-column: span 5;
}

.glass__foot {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 14px 14px;
    border-top: 1px solid var(--line);
    color: rgba(234, 240, 255, .78);
    font-weight: 900;
    font-size: 12px;
}

.tiny-note {
    margin-top: 10px;
    color: rgba(234, 240, 255, .62);
    font-weight: 700;
    font-size: 12px;
}

.glow {
    position: absolute;
    inset: auto 0 -220px 0;
    height: 420px;
    background:
        radial-gradient(300px 220px at 15% 40%, rgba(110, 231, 255, .18), transparent 60%),
        radial-gradient(300px 220px at 85% 40%, rgba(167, 139, 250, .16), transparent 60%);
    filter: blur(6px);
    pointer-events: none;
}

/* SECTIONS */
.section {
    padding: 56px 0;
}

.section--alt {
    background: linear-gradient(180deg, rgba(255, 255, 255, .02), rgba(255, 255, 255, .01));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section__head {
    display: grid;
    gap: 8px;
    margin-bottom: 22px;
}

.section__head h2 {
    margin: 0;
    font-size: 28px;
    letter-spacing: -.02em;
}

.section__head p {
    margin: 0;
    color: rgba(234, 240, 255, .72);
    line-height: 1.6;
}

.grid3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.feature {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    border-radius: var(--radius);
    padding: 16px;
}

.feature__icon {
    font-size: 20px
}

.feature h3 {
    margin: 10px 0 8px
}

.feature p {
    margin: 0;
    color: rgba(234, 240, 255, .72);
    line-height: 1.6
}

.callout {
    margin-top: 16px;
    border: 1px solid rgba(110, 231, 255, .20);
    background: linear-gradient(90deg, rgba(110, 231, 255, .08), rgba(167, 139, 250, .08));
    border-radius: 20px;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.callout span {
    display: block;
    color: rgba(234, 240, 255, .74);
    margin-top: 4px
}

/* timeline */
.timeline {
    display: grid;
    gap: 12px;
}

.step {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    border-radius: 18px;
    padding: 14px;
}

.step__num {
    width: 34px;
    height: 34px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    border: 1px solid rgba(110, 231, 255, .22);
    background: rgba(110, 231, 255, .07);
}

.step__body {
    display: flex;
    flex-direction: column;
    gap: 4px
}

.step__body span {
    color: rgba(234, 240, 255, .72);
    line-height: 1.6
}

.mini-cards {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.mini {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    border-radius: 18px;
    padding: 12px;
}

.mini strong {
    display: block
}

.mini span {
    display: block;
    margin-top: 4px;
    color: rgba(234, 240, 255, .70);
    font-size: 13px
}

/* pricing */
.pricing {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.price {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    border-radius: 22px;
    padding: 18px;
    position: relative;
}

.price--featured {
    border-color: rgba(110, 231, 255, .28);
    background: linear-gradient(180deg, rgba(110, 231, 255, .08), rgba(255, 255, 255, .03));
    box-shadow: 0 22px 60px rgba(0, 0, 0, .35);
}

.tag {
    position: absolute;
    top: 14px;
    right: 14px;
    font-size: 12px;
    font-weight: 900;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(110, 231, 255, .24);
    background: rgba(110, 231, 255, .08);
}

.price h3 {
    margin: 0
}

.muted {
    color: rgba(234, 240, 255, .70)
}

.small {
    font-size: 12px
}

.value {
    margin: 12px 0;
    font-weight: 950;
    font-size: 22px;
    letter-spacing: -.02em;
}

.value span {
    font-weight: 950
}

.price ul {
    margin: 0;
    padding-left: 18px;
    color: rgba(234, 240, 255, .74);
    line-height: 1.9
}

.note {
    margin-top: 14px;
    color: rgba(234, 240, 255, .62)
}

/* about */
.about {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 14px;
    align-items: start;
}

.about p {
    line-height: 1.7
}

.about__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 12px 0 14px;
}

.chip {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    padding: 8px 10px;
    border-radius: 999px;
    font-weight: 900;
    font-size: 12px;
    color: rgba(234, 240, 255, .76);
}

.panel {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.panel__head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px;
    border-bottom: 1px solid var(--line);
}

.panel__head img {
    width: 34px;
    height: 34px;
    border-radius: 14px
}

.panel__head span {
    display: block;
    font-size: 12px;
    color: rgba(234, 240, 255, .70);
    margin-top: 3px
}

.panel__body {
    padding: 14px;
    display: grid;
    gap: 10px;
}

.panel__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, .08);
    background: rgba(0, 0, 0, .10);
    padding: 10px 12px;
    border-radius: 16px;
    color: rgba(234, 240, 255, .82);
    font-weight: 800;
}

.panel__foot {
    padding: 12px 14px 14px;
    border-top: 1px solid var(--line);
    color: rgba(234, 240, 255, .72);
    font-weight: 800;
    font-size: 12px;
}

/* contact */
.contact {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 14px;
    align-items: start;
}

.contact__cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 14px;
}

.form {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
    border-radius: 22px;
    padding: 16px;
}

.form label {
    display: grid;
    gap: 8px;
    margin-bottom: 12px;
    font-weight: 900;
    font-size: 13px;
    color: rgba(234, 240, 255, .86);
}

.form .row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

input,
select,
textarea {
    border: 1px solid rgba(255, 255, 255, .10);
    background: rgba(8, 12, 22, .6);
    color: var(--text);
    padding: 12px 12px;
    border-radius: 14px;
    outline: none;
    font-weight: 700;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(110, 231, 255, .30);
    box-shadow: 0 0 0 6px rgba(110, 231, 255, .10);
}

/* footer */
.footer {
    padding: 26px 0 40px;
    border-top: 1px solid var(--line);
    background: rgba(0, 0, 0, .12);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.footer__links {
    display: flex;
    gap: 14px;
    color: rgba(234, 240, 255, .72)
}

.footer__links a:hover {
    color: rgba(234, 240, 255, .92)
}

/* light theme (manual toggle) */
html[data-theme="light"] body {
    background:
        radial-gradient(1200px 600px at 20% 0%, rgba(110, 231, 255, .22), transparent 60%),
        radial-gradient(1000px 600px at 80% 10%, rgba(167, 139, 250, .18), transparent 55%),
        radial-gradient(1000px 700px at 50% 100%, rgba(52, 211, 153, .10), transparent 55%),
        linear-gradient(180deg, #F7FAFF, #ECF2FF 70%);
}

html[data-theme="light"] .header {
    background: rgba(255, 255, 255, .82);
    border-bottom-color: rgba(15, 23, 42, .10);
}

html[data-theme="light"] .brand__by,
html[data-theme="light"] .nav,
html[data-theme="light"] .lead,
html[data-theme="light"] .trust__item,
html[data-theme="light"] .stat__txt span,
html[data-theme="light"] .mini-brand__txt span,
html[data-theme="light"] .pill,
html[data-theme="light"] .card small,
html[data-theme="light"] .searchline,
html[data-theme="light"] .row,
html[data-theme="light"] .kbd__title,
html[data-theme="light"] .key,
html[data-theme="light"] .glass__foot,
html[data-theme="light"] .tiny-note,
html[data-theme="light"] .section__head p,
html[data-theme="light"] .feature p,
html[data-theme="light"] .callout span,
html[data-theme="light"] .step__body span,
html[data-theme="light"] .mini span,
html[data-theme="light"] .muted,
html[data-theme="light"] .price ul,
html[data-theme="light"] .note,
html[data-theme="light"] .chip,
html[data-theme="light"] .panel__head span,
html[data-theme="light"] .panel__row,
html[data-theme="light"] .panel__foot,
html[data-theme="light"] .form label,
html[data-theme="light"] .footer__links {
    color: rgba(15, 23, 42, .75);
}

html[data-theme="light"] .nav a:hover {
    background: rgba(15, 23, 42, .06);
}

html[data-theme="light"] .btn,
html[data-theme="light"] .theme-toggle,
html[data-theme="light"] .burger,
html[data-theme="light"] .badge,
html[data-theme="light"] .trust__item,
html[data-theme="light"] .stat,
html[data-theme="light"] .hero__visual .glass,
html[data-theme="light"] .pill,
html[data-theme="light"] .card,
html[data-theme="light"] .searchline,
html[data-theme="light"] .list,
html[data-theme="light"] .kbd,
html[data-theme="light"] .feature,
html[data-theme="light"] .step,
html[data-theme="light"] .mini,
html[data-theme="light"] .price,
html[data-theme="light"] .chip,
html[data-theme="light"] .panel,
html[data-theme="light"] .panel__row,
html[data-theme="light"] .form,
html[data-theme="light"] .wa-float {
    border-color: rgba(15, 23, 42, .12);
    background: rgba(255, 255, 255, .78);
    color: #0F172A;
}

html[data-theme="light"] .btn--primary,
html[data-theme="light"] .callout,
html[data-theme="light"] .price--featured {
    background: linear-gradient(90deg, rgba(110, 231, 255, .24), rgba(167, 139, 250, .22));
    border-color: rgba(56, 189, 248, .32);
}

html[data-theme="light"] .section--alt,
html[data-theme="light"] .footer {
    background: rgba(255, 255, 255, .55);
}

html[data-theme="light"] .panel__row {
    background: rgba(15, 23, 42, .04);
}

html[data-theme="light"] .burger span {
    background: rgba(15, 23, 42, .82);
}

html[data-theme="light"] .wa-float__icon {
    border-color: rgba(15, 23, 42, .14);
    background: rgba(15, 23, 42, .06);
}

html[data-theme="light"] input,
html[data-theme="light"] select,
html[data-theme="light"] textarea {
    border-color: rgba(15, 23, 42, .18);
    background: rgba(255, 255, 255, .92);
    color: #0F172A;
}

html[data-theme="light"] input::placeholder,
html[data-theme="light"] textarea::placeholder {
    color: rgba(15, 23, 42, .50);
}

/* responsive */
@media (max-width: 1100px) {
    .header__actions .btn--ghost {
        display: none;
    }
}

@media (max-width: 980px) {
    .hero {
        padding: 44px 0 18px;
    }

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

    .glass__top {
        flex-direction: column;
        align-items: flex-start;
    }

    .pills {
        justify-content: flex-start;
    }

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

    .kbd__grid {
        grid-template-columns: repeat(8, 1fr);
    }

    .key--wide {
        grid-column: span 4;
    }

    .grid3 {
        grid-template-columns: 1fr;
    }

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

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

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

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

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

@media (max-width: 820px) {
    .header__actions .btn {
        display: none;
    }

    .nav {
        position: fixed;
        top: 72px;
        right: 16px;
        left: 16px;
        display: none;
        flex-direction: column;
        gap: 8px;
        padding: 12px;
        border: 1px solid var(--line);
        background: rgba(11, 18, 32, .92);
        border-radius: 18px;
    }

    .nav a {
        width: 100%;
        padding: 10px 12px;
    }

    .nav.is-open {
        display: flex
    }

    .burger {
        display: inline-block
    }

    html[data-theme="light"] .nav {
        background: rgba(255, 255, 255, .94);
        border-color: rgba(15, 23, 42, .12);
    }
}

@media (max-width: 680px) {
    .callout {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer__inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .kbd__grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .key--wide {
        grid-column: span 3;
    }
}

@media (max-width: 520px) {
    .container {
        width: min(1120px, calc(100% - 24px));
    }

    .hero__cta .btn {
        width: 100%;
    }

    .form .row {
        grid-template-columns: 1fr;
    }

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

    .kbd__grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .key--wide {
        grid-column: span 5;
    }

    body {
        padding-bottom: 88px;
    }
}

/* WhatsApp floating CTA */
.wa-float {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 9999;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 999px;
    border: 1px solid rgba(52, 211, 153, .25);
    background: linear-gradient(90deg, rgba(52, 211, 153, .16), rgba(110, 231, 255, .10));
    color: rgba(234, 240, 255, .92);
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
    transition: transform .12s ease, border-color .12s ease, filter .12s ease;
}

.wa-float:hover {
    transform: translateY(-1px);
    border-color: rgba(52, 211, 153, .40);
    filter: brightness(1.03);
}

.wa-float__icon {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(0, 0, 0, .14);
}

.wa-float__text {
    letter-spacing: -.01em;
    font-size: 13px;
}

/* no desktop fica discreto; no mobile fica mais chamativo */
@media (max-width: 520px) {
    .wa-float {
        left: 16px;
        right: 16px;
        justify-content: center;
    }

    .wa-float__text {
        font-size: 14px;
    }
}