:root {
    --font-ui: "Manrope", system-ui, sans-serif;
    --font-display: "Sora", "Manrope", system-ui, sans-serif;
    --font-mono: "Azeret Mono", monospace;

    --brand-1: #2563EB;
    --brand-2: #1D4ED8;
    --brand-3: #3B82F6;
    --brand-soft: rgba(37, 99, 235, 0.13);

    --bg: #F8FAFC;
    --surface: #FFFFFF;
    --surface-2: #F1F5F9;
    --surface-3: #EAF2FF;
    --panel: rgba(255, 255, 255, 0.88);
    --panel-strong: #FFFFFF;
    --ink: #0F172A;
    --ink-2: #1E293B;
    --muted: #475569;
    --muted-2: #64748B;
    --line: #DDE7F4;
    --line-strong: rgba(37, 99, 235, 0.28);

    --shadow-1: 0 4px 8px rgba(15, 23, 42, 0.12);
    --shadow-2: 0 8px 14px rgba(15, 23, 42, 0.16);

    --radius-card: 8px;
    --radius-control: 8px;
    --max: 1180px;
    --wide: 1340px;
    --header-h: 72px;
    --duration: 180ms;
    --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

body[data-theme="dark"] {
    --brand-1: #3B82F6;
    --brand-2: #2563EB;
    --brand-3: #60A5FA;
    --brand-soft: rgba(59, 130, 246, 0.16);

    --bg: #02050B;
    --surface: #07101D;
    --surface-2: #0C1726;
    --surface-3: #10213A;
    --panel: rgba(5, 12, 23, 0.86);
    --panel-strong: #0B1524;
    --ink: #F4F8FF;
    --ink-2: #DCE8FA;
    --muted: #AAB8CB;
    --muted-2: #7F90A8;
    --line: rgba(148, 163, 184, 0.18);
    --line-strong: rgba(96, 165, 250, 0.34);

    --shadow-1: 0 4px 8px rgba(0, 0, 0, 0.32);
    --shadow-2: 0 8px 14px rgba(0, 0, 0, 0.4);
}

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

html,
body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 24px);
    -webkit-text-size-adjust: 100%;
}

body {
    min-width: 320px;
    min-height: 100vh;
    color: var(--ink);
    background:
        linear-gradient(rgba(37, 99, 235, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.055) 1px, transparent 1px),
        linear-gradient(180deg, #FFFFFF 0%, var(--bg) 52%, #EEF6FF 100%);
    background-size: 44px 44px, 44px 44px, auto;
    font-family: var(--font-ui);
    font-size: 16px;
    line-height: 1.6;
    letter-spacing: 0;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: rgba(59, 130, 246, 0.18);
}

body[data-theme="dark"] {
    background:
        linear-gradient(rgba(96, 165, 250, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(96, 165, 250, 0.06) 1px, transparent 1px),
        linear-gradient(180deg, #07111E 0%, #02050B 46%, #050A12 100%);
    background-size: 44px 44px, 44px 44px, auto;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        radial-gradient(currentColor 0.7px, transparent 1px),
        radial-gradient(currentColor 0.55px, transparent 1px);
    background-position: 0 0, 12px 16px;
    background-size: 18px 18px, 34px 34px;
    color: rgba(37, 99, 235, 0.16);
    opacity: 0.24;
    mask-image: linear-gradient(180deg, #000 0%, transparent 74%);
}

body[data-theme="dark"]::before {
    color: rgba(198, 219, 255, 0.2);
    opacity: 0.28;
}

img {
    max-width: 100%;
}

a {
    color: inherit;
}

button,
a {
    touch-action: manipulation;
}

h1,
h2,
h3,
h4,
p,
figure,
ul {
    margin-top: 0;
}

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

.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: absolute;
    left: 16px;
    top: -80px;
    z-index: 300;
    min-height: 44px;
    padding: 10px 14px;
    border-radius: var(--radius-control);
    background: var(--brand-1);
    color: #FFFFFF;
    font-weight: 900;
    text-decoration: none;
}

.skip-link:focus {
    top: 14px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 80;
    display: grid;
    grid-template-columns: minmax(230px, 1fr) auto minmax(230px, 1fr);
    align-items: center;
    gap: 16px;
    min-height: var(--header-h);
    padding: 10px max(24px, calc((100vw - var(--max)) / 2));
    border-bottom: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(18px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    width: fit-content;
    text-decoration: none;
}

.brand img,
.footer-logo img {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-card);
    background: var(--surface-2);
}

.brand span {
    display: grid;
    min-width: 0;
    line-height: 1.12;
}

.brand strong {
    color: var(--ink);
    font-size: 1.08rem;
    font-weight: 900;
    letter-spacing: 0;
    white-space: nowrap;
}

.brand small {
    color: var(--muted-2);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
}

.desktop-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.desktop-nav a,
.mobile-nav a,
.site-footer a {
    min-height: 44px;
    border-radius: var(--radius-control);
    color: var(--muted);
    font-size: 0.94rem;
    font-weight: 800;
    letter-spacing: 0;
    text-decoration: none;
    transition:
        color var(--duration) var(--ease),
        background var(--duration) var(--ease),
        border-color var(--duration) var(--ease),
        transform var(--duration) var(--ease);
}

.desktop-nav a {
    display: inline-flex;
    align-items: center;
    padding: 10px 12px;
}

.desktop-nav a:hover,
.mobile-nav a:hover,
.site-footer a:hover {
    color: var(--ink);
    background: var(--surface-2);
}

.header-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

.icon-button,
.button,
.header-download {
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--panel-strong);
    color: var(--ink);
    font: inherit;
    font-weight: 900;
    letter-spacing: 0;
    text-decoration: none;
    cursor: pointer;
    transition:
        transform var(--duration) var(--ease),
        border-color var(--duration) var(--ease),
        background var(--duration) var(--ease),
        color var(--duration) var(--ease),
        box-shadow var(--duration) var(--ease);
}

.icon-button {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    padding: 0;
    font-size: 1.25rem;
}

.header-download,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 48px;
    padding: 12px 18px;
}

.button-leading,
.button-trailing {
    flex: 0 0 auto;
    font-size: 1.2em;
}

.primary,
.header-download {
    border-color: var(--brand-1);
    background: linear-gradient(180deg, var(--brand-3), var(--brand-1));
    color: #FFFFFF;
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.24);
}

.secondary {
    background: rgba(255, 255, 255, 0.03);
}

.icon-button:hover,
.button:hover,
.header-download:hover,
.carousel-control:hover,
.screenshot-card:hover {
    border-color: var(--brand-3);
    transform: translateY(-1px);
}

.button:active,
.icon-button:active,
.header-download:active,
.carousel-control:active,
.screenshot-card:active {
    transform: translateY(0);
}

.mobile-only,
.mobile-screenshot-button {
    display: none;
}

.mobile-nav {
    position: sticky;
    top: var(--header-h);
    z-index: 70;
    display: grid;
    gap: 4px;
    width: min(var(--max), calc(100% - 32px));
    margin: 8px auto 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--panel-strong);
    box-shadow: var(--shadow-1);
}

.mobile-nav[hidden] {
    display: none;
}

.mobile-nav a {
    display: flex;
    align-items: center;
    padding: 11px 12px;
}

main {
    width: 100%;
    max-width: 100%;
}

.hero {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    justify-items: center;
    width: min(var(--max), calc(100% - 32px));
    max-width: calc(100vw - 32px);
    min-height: auto;
    margin: 0 auto;
    padding: 112px 0 104px;
    overflow: visible;
    text-align: center;
}

.hero-copy {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 900px;
    min-width: 0;
}

.hero-title {
    max-width: 900px;
    margin: 0 0 22px;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: 0;
}

.hero-brand-word,
.hero-tagline {
    display: block;
    font-family: var(--font-display);
    letter-spacing: 0;
}

.hero-brand-word {
    color: var(--ink);
    font-size: 4.85rem;
    line-height: 0.98;
}

.hero-tagline {
    color: var(--brand-3);
    font-size: 3rem;
    line-height: 1.06;
}

.hero-lead,
.section-head p,
.info-card p,
.step-card p,
.detail-card p,
.site-footer p {
    color: var(--muted);
}

.hero-lead {
    max-width: 650px;
    margin: 0 auto 22px;
    font-size: 1.14rem;
    line-height: 1.68;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: center;
    gap: 14px;
}

.download-group {
    display: grid;
    gap: 8px;
}

.support-note {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    color: var(--muted-2);
    font-size: 0.9rem;
    font-weight: 800;
}

.hero .support-note {
    justify-content: center;
    padding-left: 0;
}

.support-note i {
    font-size: 1.18em;
}

.section {
    width: min(var(--max), calc(100% - 32px));
    max-width: calc(100vw - 32px);
    margin: 0 auto 96px;
    padding: 0;
}

.section-head {
    max-width: 760px;
    margin: 0 0 28px;
}

.section-head.centered {
    margin-right: auto;
    margin-left: auto;
    text-align: center;
}

.section-head h2 {
    margin: 0 0 12px;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 2.7rem;
    line-height: 1.12;
    font-weight: 800;
    letter-spacing: 0;
    text-wrap: balance;
}

.section-head p {
    margin-bottom: 0;
    max-width: 68ch;
    font-size: 1.05rem;
    line-height: 1.72;
    text-wrap: pretty;
}

.section-head.centered p {
    margin-right: auto;
    margin-left: auto;
}

.highlight-grid,
.steps-grid,
.detail-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.info-card,
.detail-card,
.step-card {
    min-width: 0;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--panel);
    box-shadow: var(--shadow-1);
    transition:
        transform var(--duration) var(--ease),
        border-color var(--duration) var(--ease),
        background var(--duration) var(--ease);
}

.info-card:hover,
.detail-card:hover,
.step-card:hover {
    border-color: var(--line-strong);
    transform: translateY(-1px);
}

.info-card i,
.step-visual {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-card);
    background: var(--brand-soft);
    color: var(--brand-3);
    font-size: 1.35rem;
}

.step-visual {
    margin-bottom: 4px;
}

.info-card h3,
.detail-card h3,
.step-card h3 {
    margin: 0 0 8px;
    color: var(--ink);
    font-size: 1.12rem;
    line-height: 1.28;
    font-weight: 800;
    letter-spacing: 0;
}

.info-card p,
.detail-card p,
.step-card p {
    margin-bottom: 0;
    font-size: 0.98rem;
    line-height: 1.62;
}

.steps-grid {
    counter-reset: step;
}

.step-card {
    position: relative;
    padding-top: 24px;
}

.step-card::before {
    counter-increment: step;
    content: "0" counter(step);
    position: absolute;
    right: 18px;
    top: 16px;
    color: var(--muted-2);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 900;
    letter-spacing: 0;
}

.screenshots-section {
    overflow: hidden;
}

.carousel {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
}

.carousel-track {
    display: grid;
    grid-auto-columns: minmax(230px, 288px);
    grid-auto-flow: column;
    gap: 16px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-padding-inline: 2px;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
    scrollbar-color: var(--brand-3) transparent;
    padding: 6px 2px 16px;
}

.screenshot-slide {
    scroll-snap-align: start;
    margin: 0;
}

.screenshot-card {
    display: block;
    width: 100%;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--panel);
    box-shadow: var(--shadow-1);
    cursor: pointer;
}

.screenshot-card img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 448 / 875;
    border-radius: var(--radius-card);
    background: #020617;
    object-fit: cover;
    object-position: top center;
}

.screenshot-slide figcaption {
    margin-top: 10px;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 800;
    text-align: center;
}

.carousel-control {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--panel-strong);
    color: var(--ink);
    font: inherit;
    cursor: pointer;
    transition:
        transform var(--duration) var(--ease),
        border-color var(--duration) var(--ease),
        opacity var(--duration) var(--ease);
}

.carousel-control:disabled {
    opacity: 0.42;
    cursor: not-allowed;
    transform: none;
}

.carousel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 16px;
}

.carousel-dots {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface-2);
    cursor: pointer;
}

.carousel-dot.is-active {
    border-color: var(--brand-3);
    background: var(--brand-3);
}

.carousel-footer p {
    margin: 0;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 900;
    letter-spacing: 0;
}

.site-footer {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) auto;
    align-items: start;
    gap: 42px;
    width: 100%;
    margin: 0;
    padding: 42px max(24px, calc((100vw - var(--max)) / 2)) 34px;
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.62);
}

body[data-theme="dark"] .site-footer {
    background: rgba(3, 8, 16, 0.72);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: var(--ink);
    text-decoration: none;
}

.footer-logo img {
    width: 38px;
    height: 38px;
}

.footer-logo strong {
    font-size: 1.1rem;
    font-weight: 900;
}

.site-footer p {
    max-width: 430px;
    margin-bottom: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(130px, 1fr));
    gap: 44px;
}

.footer-links nav {
    display: grid;
    gap: 6px;
}

.footer-links h4 {
    margin: 0 0 6px;
    color: var(--ink);
    font-size: 0.94rem;
    font-weight: 900;
}

.site-footer a {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 0;
}

.footer-logo:hover,
.footer-links a:hover {
    color: var(--brand-3);
    background: transparent;
}

.footer-copyright {
    grid-column: 1 / -1;
    margin: 8px 0 0;
    color: var(--muted-2);
    font-size: 0.94rem;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 160;
    display: grid;
    place-items: center;
    padding: 18px;
    background: rgba(2, 6, 23, 0.86);
}

.lightbox[hidden] {
    display: none;
}

.lightbox-panel {
    position: relative;
    width: min(100%, 760px);
    max-height: calc(100vh - 36px);
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--surface);
}

.lightbox-panel img {
    display: block;
    max-height: calc(100vh - 150px);
    margin: 0 auto;
    border-radius: var(--radius-card);
    object-fit: contain;
}

.lightbox-panel p {
    margin: 12px 44px 0 0;
    color: var(--muted);
    font-weight: 800;
}

.lightbox-close {
    position: absolute;
    right: 14px;
    top: 14px;
}

@media (min-width: 1121px) {
    .features-section .section-head.centered,
    .steps-section .section-head.centered,
    .screenshots-section .section-head.centered,
    .trust-section .section-head.centered {
        margin-right: 0;
        margin-left: 0;
        text-align: left;
    }

    .features-section .section-head h2,
    .steps-section .section-head h2,
    .trust-section .section-head h2 {
        font-size: 2.28rem;
    }

    .features-section {
        display: grid;
        grid-template-columns: minmax(260px, 0.46fr) minmax(0, 1fr);
        align-items: start;
        gap: 42px;
    }

    .features-section .section-head {
        max-width: 360px;
        margin-bottom: 0;
    }

    .highlight-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
        grid-auto-rows: minmax(150px, auto);
        gap: 16px;
    }

    .info-card {
        display: grid;
        grid-template-columns: 48px minmax(0, 1fr);
        column-gap: 16px;
        align-content: start;
    }

    .info-card i {
        grid-row: 1 / span 2;
        margin: 0;
    }

    .info-card h3,
    .info-card p {
        grid-column: 2;
    }

    .info-card:nth-child(1) {
        grid-column: 1 / 4;
        grid-row: 1 / 3;
        display: block;
        padding: 30px;
        background:
            linear-gradient(180deg, rgba(59, 130, 246, 0.13), transparent 70%),
            var(--panel);
    }

    .info-card:nth-child(2),
    .info-card:nth-child(3) {
        grid-column: 4 / 7;
    }

    .info-card:nth-child(4) {
        grid-column: 1 / 3;
    }

    .info-card:nth-child(5) {
        grid-column: 3 / 5;
    }

    .info-card:nth-child(6) {
        grid-column: 5 / 7;
    }

    .info-card:nth-child(1) i {
        width: 56px;
        height: 56px;
        margin-bottom: 20px;
        font-size: 1.48rem;
    }

    .info-card:nth-child(1) h3 {
        font-size: 1.38rem;
    }

    .info-card:nth-child(1) p {
        font-size: 1.04rem;
    }

    .steps-section {
        display: grid;
        grid-template-columns: minmax(260px, 0.55fr) minmax(0, 1.45fr);
        align-items: start;
        gap: 48px;
    }

    .steps-section .section-head {
        max-width: 360px;
        margin-bottom: 0;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 0;
        border-top: 1px solid var(--line);
    }

    .step-card {
        display: grid;
        grid-template-columns: 54px minmax(0, 1fr) auto;
        align-items: start;
        column-gap: 18px;
        padding: 22px 0;
        border: 0;
        border-bottom: 1px solid var(--line);
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .step-card:hover {
        border-color: var(--line);
        background: transparent;
        transform: none;
    }

    .step-card::before {
        position: static;
        grid-column: 3;
        grid-row: 1;
        align-self: start;
        padding-top: 4px;
    }

    .step-visual {
        grid-row: 1 / span 2;
        margin: 0;
    }

    .step-card h3 {
        grid-column: 2;
    }

    .step-card p {
        grid-column: 2 / 4;
        max-width: 62ch;
    }

    .screenshots-section {
        width: min(var(--wide), calc(100% - 32px));
    }

    .screenshots-section .section-head {
        max-width: 680px;
    }

    .trust-section {
        display: grid;
        grid-template-columns: minmax(270px, 0.67fr) minmax(0, 1.33fr);
        align-items: start;
        gap: 44px;
        margin-bottom: 72px;
    }

    .trust-section .section-head {
        max-width: 360px;
        margin-bottom: 0;
    }

    .detail-grid {
        grid-template-columns: 1fr;
        gap: 0;
        border-top: 1px solid var(--line);
    }

    .detail-card {
        padding: 20px 0;
        border: 0;
        border-bottom: 1px solid var(--line);
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .detail-card:hover {
        border-color: var(--line);
        background: transparent;
        transform: none;
    }
}

@media (max-width: 1120px) {
    .site-header {
        grid-template-columns: minmax(220px, 1fr) auto minmax(160px, 1fr);
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 44px;
        min-height: 0;
        padding-top: 68px;
    }

    .hero-copy {
        max-width: 820px;
        margin: 0 auto;
        text-align: center;
    }

    .hero-lead {
        margin-right: auto;
        margin-left: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero .support-note {
        justify-content: center;
        padding-left: 0;
    }

    .hero-brand-word {
        font-size: 4.15rem;
    }

    .hero-tagline {
        font-size: 2.6rem;
    }
}

@media (max-width: 980px) {
    :root {
        --header-h: 64px;
    }

    .site-header {
        grid-template-columns: minmax(0, 1fr) auto;
        min-height: var(--header-h);
        padding: 8px 14px;
    }

    .desktop-nav,
    .header-download {
        display: none;
    }

    .mobile-only {
        display: grid;
    }

    .mobile-nav {
        top: var(--header-h);
        width: min(var(--max), calc(100% - 24px));
    }

    .highlight-grid,
    .steps-grid,
    .detail-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .section-head h2 {
        font-size: 2.7rem;
    }

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

@media (max-width: 640px) {
    :root {
        --header-h: 116px;
    }

    body[data-theme="dark"] {
        background:
            linear-gradient(rgba(96, 165, 250, 0.06) 1px, transparent 1px),
            linear-gradient(90deg, rgba(96, 165, 250, 0.06) 1px, transparent 1px),
            linear-gradient(180deg, #061222 0%, #020712 55%, #01050C 100%);
        background-size: 36px 36px, 36px 36px, auto;
    }

    body::before {
        opacity: 0.18;
        mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
    }

    .site-header {
        min-height: var(--header-h);
        padding: 20px 18px 18px;
        border-bottom-color: rgba(37, 99, 235, 0.18);
        background: rgba(255, 255, 255, 0.94);
        backdrop-filter: blur(20px);
    }

    body[data-theme="dark"] .site-header {
        border-bottom-color: rgba(96, 165, 250, 0.26);
        background: rgba(2, 10, 20, 0.94);
    }

    .brand {
        gap: 10px;
    }

    .brand img {
        width: 52px;
        height: 52px;
        padding: 5px;
        border-color: rgba(37, 99, 235, 0.26);
        background: rgba(255, 255, 255, 0.92);
    }

    body[data-theme="dark"] .brand img {
        border-color: rgba(96, 165, 250, 0.46);
        background: rgba(10, 23, 41, 0.96);
    }

    .brand span {
        display: grid;
        gap: 3px;
    }

    .brand strong {
        font-size: 1.34rem;
        line-height: 1;
    }

    .brand small {
        display: block;
        color: var(--brand-1);
        font-size: 0.86rem;
        font-weight: 700;
        white-space: nowrap;
    }

    body[data-theme="dark"] .brand small {
        color: var(--brand-3);
    }

    .header-actions {
        gap: 10px;
    }

    .icon-button {
        width: 54px;
        height: 54px;
        border-color: rgba(37, 99, 235, 0.2);
        background: rgba(255, 255, 255, 0.9);
        color: var(--ink);
        font-size: 1.55rem;
    }

    body[data-theme="dark"] .icon-button {
        border-color: rgba(148, 163, 184, 0.34);
        background: rgba(12, 23, 39, 0.9);
    }

    .mobile-nav {
        top: var(--header-h);
        width: calc(100% - 28px);
        border-color: rgba(37, 99, 235, 0.2);
        background: rgba(255, 255, 255, 0.97);
    }

    body[data-theme="dark"] .mobile-nav {
        border-color: rgba(96, 165, 250, 0.28);
        background: rgba(4, 12, 24, 0.97);
    }

    .hero {
        width: 100%;
        max-width: 100%;
        min-height: 0;
        margin: 0;
        padding: 42px 18px 32px;
        align-items: start;
        justify-items: start;
        gap: 20px;
        overflow: visible;
    }

    .hero-copy {
        z-index: 2;
        width: 100%;
        max-width: 100%;
        margin: 0;
        text-align: left;
    }

    .hero-title {
        margin-bottom: 20px;
    }

    .hero-brand-word {
        font-size: clamp(3rem, 14.5vw, 3.45rem);
        line-height: 0.98;
    }

    .hero-tagline {
        font-size: clamp(1.55rem, 7.4vw, 1.9rem);
        line-height: 1.08;
        white-space: nowrap;
    }

    .hero-lead {
        max-width: 100%;
        margin: 0 0 22px;
        color: var(--muted);
        font-size: 1.05rem;
        line-height: 1.58;
    }

    .hero-actions {
        width: 100%;
        max-width: none;
        margin: 0;
        gap: 16px;
    }

    .hero .download-group,
    .desktop-screenshot-button,
    .mobile-screenshot-button {
        width: 100%;
    }

    .desktop-screenshot-button {
        display: none;
    }

    .mobile-screenshot-button {
        display: inline-flex;
    }

    .button {
        justify-content: space-between;
        width: 100%;
        min-height: 64px;
        padding: 0 20px;
        border-color: rgba(59, 130, 246, 0.68);
        font-size: 1.04rem;
        box-shadow: none;
    }

    .button-leading {
        font-size: 1.45rem;
    }

    .button-trailing {
        font-size: 1.3rem;
    }

    .support-note {
        justify-content: center;
        margin-top: 6px;
        color: var(--muted-2);
        font-size: 0.98rem;
        font-weight: 700;
    }

    .section {
        width: calc(100% - 36px);
        max-width: 430px;
        margin-bottom: 44px;
    }

    .section-head {
        margin-bottom: 20px;
        text-align: left;
    }

    .section-head.centered {
        text-align: left;
    }

    .section-head h2 {
        font-size: 2rem;
        line-height: 1.12;
    }

    .section-head p {
        font-size: 1rem;
        line-height: 1.62;
    }

    .steps-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .features-section {
        padding: 24px 16px;
        border: 1px solid var(--line-strong);
        border-radius: var(--radius-card);
        background: rgba(255, 255, 255, 0.84);
    }

    body[data-theme="dark"] .features-section {
        border-color: rgba(59, 130, 246, 0.42);
        background: rgba(2, 12, 24, 0.78);
    }

    .features-section .section-head {
        margin-bottom: 20px;
    }

    .features-section .section-head p {
        display: none;
    }

    .features-section .section-head h2 {
        margin: 0;
        color: var(--brand-3);
        font-size: 1.34rem;
    }

    .features-section .highlight-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0;
    }

    .features-section .info-card {
        min-height: 176px;
        padding: 16px 12px;
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .features-section .info-card:hover {
        transform: none;
    }

    .features-section .info-card:nth-child(odd) {
        border-right: 1px solid rgba(96, 165, 250, 0.12);
    }

    .features-section .info-card:nth-child(-n + 4) {
        border-bottom: 1px solid rgba(96, 165, 250, 0.12);
    }

    .features-section .info-card i {
        width: 46px;
        height: 46px;
        margin-bottom: 14px;
        border-radius: var(--radius-card);
        font-size: 1.32rem;
    }

    .features-section .info-card h3 {
        font-size: 0.98rem;
        line-height: 1.22;
    }

    .features-section .info-card p {
        color: var(--muted);
        font-size: 0.86rem;
        line-height: 1.4;
    }

    .step-card,
    .detail-card {
        padding: 20px;
    }

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

    .carousel-control {
        display: none;
    }

    .carousel-track {
        grid-auto-columns: minmax(74%, 82%);
        gap: 12px;
        padding-bottom: 12px;
    }

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

    .site-footer {
        display: grid;
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 30px 20px 26px;
        text-align: left;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 22px;
    }

    .footer-copyright {
        margin: 2px 0 0;
        text-align: center;
        font-size: 0.92rem;
        line-height: 1.4;
    }
}

@media (max-width: 430px) {
    .site-header {
        padding-inline: 16px;
    }

    .hero {
        padding-inline: 18px;
    }

    .hero-lead {
        max-width: 100%;
    }

}

@media (max-width: 380px) {
    .brand img {
        width: 48px;
        height: 48px;
    }

    .brand strong {
        font-size: 1.2rem;
    }

    .brand small {
        font-size: 0.78rem;
    }

    .site-header {
        padding-inline: 12px;
    }

    .icon-button {
        width: 48px;
        height: 48px;
    }

    .hero {
        padding-inline: 14px;
    }

    .hero-brand-word {
        font-size: 2.76rem;
    }

    .hero-tagline {
        font-size: 1.54rem;
    }

    .hero-lead {
        max-width: 100%;
    }

    .carousel-track {
        grid-auto-columns: 88%;
    }

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

@media (max-width: 340px) {
    .features-section .highlight-grid {
        grid-template-columns: 1fr;
    }

    .features-section .info-card {
        min-height: 0;
        border-right: 0;
        border-bottom: 1px solid rgba(96, 165, 250, 0.12);
    }

    .features-section .info-card:last-child {
        border-bottom: 0;
    }
}

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

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