:root {
    color-scheme: light;
    --ink: #142033;
    --muted: #5f6f83;
    --surface: #ffffff;
    --surface-soft: #f4f8fd;
    --line: rgba(49, 75, 108, 0.14);
    --blue: #1868d5;
    --blue-hover: #105bbf;
    --codex: #4aa8b8;
    --claude: #cc7a59;
    --sky: #8cc7f2;
    --safe: #76b85a;
    --danger: #f06b7a;
    --radius-window: 28px;
    --shadow-window: 0 36px 90px rgba(36, 75, 122, 0.18);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

*,
* + * {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    background: var(--surface);
}

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

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

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

button {
    margin: 0;
    border: 0;
    font: inherit;
}

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

h1,
h2,
h3 {
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

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

.container {
    width: calc(100% - 48px);
    max-width: 1200px;
    margin-inline: auto;
}

.skip-link {
    position: fixed;
    z-index: 100;
    top: 12px;
    left: 12px;
    min-height: 48px;
    padding: 12px 18px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink);
    font-size: 15px;
    font-weight: 700;
    transform: translateY(calc(-100% - 20px));
    transition: transform 160ms ease;
}

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

.site-header {
    height: 64px;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.header-inner {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    min-height: 64px;
    gap: 28px;
}

.brand-lockup {
    display: inline-flex;
    align-items: center;
    min-width: max-content;
    gap: 11px;
}

.brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 9px;
}

.brand-name {
    font-size: 16px;
    font-weight: 750;
    letter-spacing: -0.02em;
}

.site-navigation {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 28px;
}

.site-navigation a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
    transition: color 160ms ease;
}

.site-navigation a:hover {
    color: var(--blue);
}

.language-control {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: max-content;
    color: var(--muted);
    font-size: 14px;
    font-weight: 650;
}

.language-control button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0 8px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: color 160ms ease;
}

.language-control button:hover,
.language-control button[aria-pressed="true"] {
    color: var(--blue);
}

.hero {
    padding: clamp(68px, 7vw, 104px) 0 clamp(88px, 9vw, 132px);
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.28fr);
    align-items: center;
    gap: clamp(44px, 6vw, 84px);
}

.hero-copy {
    position: relative;
    z-index: 1;
}

.hero h1 {
    max-width: 11ch;
    margin-bottom: 28px;
    color: var(--ink);
    font-size: clamp(3rem, 5vw, 4rem);
    font-weight: 780;
    letter-spacing: -0.052em;
    line-height: 0.98;
}

.hero-title-line {
    display: inline;
    white-space: normal;
}

.hero-description {
    max-width: 37rem;
    margin-bottom: 0;
    color: var(--muted);
    font-size: clamp(1.04rem, 1.5vw, 1.16rem);
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 11px;
    font-size: 15px;
    font-weight: 720;
    line-height: 1.2;
    text-align: center;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.button-primary {
    gap: 0.34em;
    background: var(--blue);
    box-shadow: 0 12px 28px rgba(24, 104, 213, 0.22);
    color: var(--surface);
}

.button-primary:hover {
    background: var(--blue-hover);
    box-shadow: 0 15px 34px rgba(24, 104, 213, 0.26);
    transform: translateY(-1px);
}

.button-secondary {
    border-color: var(--line);
    background: var(--surface);
    color: var(--ink);
}

.button-secondary:hover {
    border-color: rgba(24, 104, 213, 0.32);
    color: var(--blue);
    transform: translateY(-1px);
}

.download-metadata {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 18px;
    margin: 15px 0 0;
    padding: 0;
    color: var(--muted);
    font-size: 12px;
    font-weight: 520;
    line-height: 1.5;
    list-style: none;
}

.product-window {
    display: block;
    width: 100%;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-window);
    background: var(--surface);
    box-shadow: var(--shadow-window);
}

.product-window img {
    width: 100%;
    background: var(--surface);
}

.hero-window {
    align-self: center;
}

.feature-story {
    padding: clamp(82px, 9vw, 136px) 0;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.feature-story-trends,
.feature-story-history {
    background: var(--surface-soft);
}

.feature-layout {
    display: grid;
    grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
    align-items: center;
    gap: clamp(48px, 8vw, 112px);
}

.feature-layout-reversed {
    grid-template-columns: minmax(0, 1.28fr) minmax(240px, 0.72fr);
}

.feature-layout-reversed .feature-copy {
    grid-column: 2;
}

.feature-layout-reversed .product-window,
.feature-layout-reversed .local-history-visual {
    grid-row: 1;
    grid-column: 1;
}

.feature-copy {
    max-width: 430px;
}

.feature-copy h2,
.privacy-heading h2,
.section-heading h2,
.final-cta h2 {
    margin-bottom: 20px;
    color: var(--ink);
    font-size: clamp(2rem, 3.7vw, 2.75rem);
    font-weight: 760;
    letter-spacing: -0.04em;
    line-height: 1.08;
}

.feature-copy p,
.privacy-section p,
.installation-section p,
.final-cta p {
    color: var(--muted);
}

.feature-copy p:last-child,
.privacy-section p:last-child,
.installation-section p:last-child,
.final-cta p:last-child {
    margin-bottom: 0;
}

.feature-lead {
    margin-bottom: 13px;
    color: var(--ink);
    font-size: 18px;
    font-weight: 580;
    line-height: 1.5;
}

.detail-window {
    border-radius: 22px;
    box-shadow: 0 24px 64px rgba(36, 75, 122, 0.15);
}

.local-history-visual {
    display: grid;
    min-height: 380px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--surface);
    box-shadow: 0 24px 64px rgba(36, 75, 122, 0.12);
}

.local-history-visual img {
    width: clamp(116px, 18vw, 172px);
    filter: drop-shadow(0 18px 30px rgba(36, 75, 122, 0.18));
}

.privacy-section {
    padding: clamp(76px, 8vw, 112px) 0;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.privacy-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.9fr) minmax(0, 0.9fr);
    align-items: start;
    gap: clamp(36px, 6vw, 84px);
}

.privacy-heading h2 {
    margin-bottom: 14px;
}

.privacy-detail {
    padding-top: 10px;
    border-top: 3px solid var(--sky);
}

.privacy-detail:last-child {
    border-top-color: var(--safe);
}

.privacy-detail h3 {
    margin-bottom: 10px;
    font-size: 18px;
    font-weight: 720;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.privacy-detail p {
    font-size: 15px;
}

.installation-section {
    padding: clamp(78px, 8vw, 116px) 0;
    background: var(--surface-soft);
}

.section-heading {
    max-width: 620px;
    margin-bottom: 46px;
}

.section-heading h2 {
    margin-bottom: 12px;
}

.installation-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(28px, 5vw, 64px);
    margin: 0;
    padding: 0;
    list-style: none;
}

.installation-steps li {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    align-content: start;
    gap: 6px 14px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
}

.step-number {
    display: inline-flex;
    grid-row: 1 / span 2;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(24, 104, 213, 0.24);
    border-radius: 999px;
    background: rgba(140, 199, 242, 0.2);
    color: var(--blue);
    font-size: 15px;
    font-weight: 750;
}

.installation-steps h3 {
    margin-bottom: 1px;
    font-size: 17px;
    font-weight: 720;
    letter-spacing: -0.02em;
    line-height: 1.35;
}

.installation-steps p {
    grid-column: 2;
    font-size: 14px;
    line-height: 1.55;
}

.final-cta {
    padding: clamp(62px, 7vw, 92px) 0;
    background: var(--surface);
}

.final-cta-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
    padding: clamp(32px, 5vw, 56px);
    border: 1px solid rgba(24, 104, 213, 0.14);
    border-radius: 24px;
    background: var(--surface-soft);
}

.final-cta h2 {
    max-width: 17ch;
    margin-bottom: 10px;
    font-size: clamp(2rem, 3.6vw, 2.7rem);
}

.final-download {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.final-download .download-metadata {
    justify-content: flex-end;
}

.site-footer {
    border-top: 1px solid var(--line);
    background: var(--surface);
}

.footer-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 88px;
    gap: 24px;
    color: var(--muted);
    font-size: 13px;
}

.footer-layout > span:first-child {
    color: var(--ink);
    font-weight: 700;
}

.not-found {
    display: grid;
    min-height: calc(100vh - 152px);
    place-items: center;
    padding: 72px 0;
    background: var(--surface-soft);
}

body[data-page="download-error"] .not-found {
    min-height: 100vh;
}

.not-found-content {
    max-width: 640px;
    text-align: center;
}

.not-found-content h1 {
    margin-bottom: 18px;
    font-size: clamp(2.6rem, 7vw, 4.8rem);
    font-weight: 780;
    letter-spacing: -0.052em;
    line-height: 1;
}

.not-found-content > p:not(.not-found-eyebrow) {
    max-width: 38rem;
    margin: 0 auto 30px;
    color: var(--muted);
    font-size: 18px;
}

.not-found-eyebrow {
    margin-bottom: 14px;
    color: var(--blue);
    font-size: 13px;
    font-weight: 750;
    letter-spacing: 0.11em;
    line-height: 1.3;
    text-transform: uppercase;
}

.not-found-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

@media (min-width: 981px) {
    .hero-title-line {
        display: block;
        white-space: nowrap;
    }
}

@media (max-width: 980px) and (min-width: 760px) {
    .container {
        width: calc(100% - 40px);
    }

    .hero-layout {
        gap: 36px;
    }

    .hero h1 {
        font-size: clamp(2.8rem, 5.7vw, 3.45rem);
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .hero-actions .button {
        width: 100%;
    }

    .feature-layout,
    .feature-layout-reversed {
        gap: 44px;
    }

    .privacy-layout {
        gap: 32px;
    }

    .installation-steps {
        gap: 24px;
    }
}

@media (max-width: 759px) {
    html {
        scroll-padding-top: 118px;
    }

    .container {
        width: calc(100% - 32px);
    }

    .site-header {
        height: auto;
    }

    .header-inner {
        grid-template-columns: minmax(0, 1fr) auto;
        min-height: 64px;
        gap: 0 12px;
        padding: 8px 0;
    }

    .brand-icon {
        width: 34px;
        height: 34px;
        border-radius: 8px;
    }

    .site-navigation {
        grid-row: 2;
        grid-column: 1 / -1;
        justify-content: flex-start;
        width: 100%;
        gap: 28px;
        border-top: 1px solid var(--line);
    }

    .language-control {
        justify-self: end;
    }

    .hero {
        padding: 58px 0 76px;
    }

    .hero-layout,
    .feature-layout,
    .feature-layout-reversed,
    .privacy-layout,
    .installation-steps,
    .final-cta-layout {
        grid-template-columns: 1fr;
    }

    .hero-layout {
        gap: 42px;
    }

    .hero h1 {
        max-width: 12ch;
        margin-bottom: 22px;
        font-size: clamp(2.5rem, 12vw, 3.15rem);
        line-height: 1.02;
    }

    .hero-description {
        font-size: 17px;
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
        margin-top: 28px;
    }

    .hero-actions .button {
        width: 100%;
    }

    .download-metadata {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2px;
    }

    .product-window {
        border-radius: 18px;
        box-shadow: 0 22px 52px rgba(36, 75, 122, 0.15);
    }

    .feature-story {
        padding: 72px 0;
    }

    .feature-layout,
    .feature-layout-reversed {
        gap: 38px;
    }

    .feature-layout-reversed .feature-copy,
    .feature-layout-reversed .product-window,
    .feature-layout-reversed .local-history-visual {
        grid-row: auto;
        grid-column: auto;
    }

    .feature-copy h2,
    .privacy-heading h2,
    .section-heading h2,
    .final-cta h2 {
        font-size: clamp(2rem, 9vw, 2.55rem);
    }

    .local-history-visual {
        min-height: 260px;
    }

    .privacy-section,
    .installation-section {
        padding: 72px 0;
    }

    .privacy-layout {
        gap: 38px;
    }

    .privacy-detail {
        padding-top: 16px;
    }

    .section-heading {
        margin-bottom: 38px;
    }

    .installation-steps {
        gap: 30px;
    }

    .installation-steps li {
        padding-top: 20px;
    }

    .final-cta {
        padding: 48px 0;
    }

    .final-cta-layout {
        gap: 28px;
        padding: 30px 24px;
        border-radius: 19px;
    }

    .final-download {
        align-items: stretch;
    }

    .final-download .download-metadata {
        justify-content: flex-start;
    }

    .footer-layout {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        min-height: 0;
        padding: 30px 0;
        gap: 12px;
    }

    .footer-layout .language-control {
        justify-self: auto;
        margin-left: -8px;
    }

    .not-found {
        min-height: calc(100vh - 118px);
        padding: 64px 0;
    }

    body[data-page="download-error"] .not-found {
        min-height: 100vh;
    }

    .not-found-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .not-found-actions .button {
        width: 100%;
    }
}

@media (max-width: 359px) {
    .container {
        width: calc(100% - 24px);
    }

    .brand-name {
        font-size: 15px;
    }

    .language-control button {
        min-width: 44px;
        padding: 0 5px;
    }

    .hero h1 {
        font-size: 2.45rem;
    }

    .button {
        padding-inline: 16px;
        font-size: 14px;
    }
}

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

    *,
    *:focus,
    *:hover {
        animation: none !important;
        transition: none !important;
    }
}

@media (forced-colors: active) {
    :root {
        forced-color-adjust: auto;
    }

    .site-header,
    .feature-story,
    .privacy-section,
    .site-footer,
    .product-window,
    .local-history-visual,
    .final-cta-layout,
    .installation-steps li,
    .privacy-detail {
        border-color: CanvasText;
    }

    .product-window,
    .local-history-visual,
    .button-primary {
        box-shadow: none;
    }

    .button,
    .language-control button,
    .site-navigation a {
        forced-color-adjust: auto;
    }

    .button-primary {
        border: 2px solid ButtonText;
    }
}