:root {
    /* Core Palette */
    --ink: #121317;
    --ink-strong: #0b0c0f;
    --ink-muted: #4b5058;
    --surface: #ffffff;
    --surface-subtle: #f6f8fb;
    --surface-muted: #eef1f5;
    --line: rgba(18, 19, 23, 0.08);
    --line-strong: rgba(18, 19, 23, 0.16);
    --stroke-width: 0.5px;

    /* Brand Accent */
    --accent: #0fae9b;
    --accent-dark: #0b8f80;

    /* Legacy Tokens (kept for compatibility) */
    --primary: var(--accent);
    --primary-dark: var(--accent-dark);
    --accent-light: var(--surface-subtle);
    --text-main: var(--ink);
    --text-muted: var(--ink-muted);
    --white: #ffffff;

    /* Layout */
    --container-width: 72rem;
    --page-padding: 1.25rem;

    /* Radius & Shadows */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 8px 22px rgba(18, 19, 23, 0.08);
    --shadow-lg: 0 30px 80px rgba(18, 19, 23, 0.18);
    --nav-surface: rgba(255, 255, 255, 0.78);
    --mobile-surface: #ffffff;
    --pill-surface: rgba(255, 255, 255, 0.7);
    --body-glow: rgba(15, 174, 155, 0.14);
    --body-glow-secondary: rgba(18, 19, 23, 0.05);
    --pointer-glow: rgba(15, 174, 155, 0.22);
    --theme-picker-surface: #edf0f2;
    --theme-picker-selection: #ffffff;
    --theme-picker-shadow: 0 1px 2px rgb(16 24 39 / 14%);
    --focus-ring: rgb(0 143 125 / 45%);

    /* Shared type rhythm with the Chukke site. */
    --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
    --text-display: clamp(2rem, 4vw, 3.25rem);
    --text-page-title: clamp(2rem, 3.3vw, 2.625rem);
    --text-reading-title: clamp(2rem, 3vw, 2.25rem);
    --text-section-title: clamp(1.75rem, 2.5vw, 2.25rem);
    --text-section-compact: clamp(1.3rem, 2vw, 1.5rem);
    --text-card-title: clamp(1.125rem, 1.6vw, 1.25rem);
    --text-lede: clamp(1.0625rem, 1.4vw, 1.25rem);
    --text-subhead: 1.0625rem;
    --text-interface: 0.95rem;
    --leading-body: 1.6;
    --leading-heading: 1.1;
    --leading-lede: 1.55;
    --tracking-heading: -0.03em;
    --tracking-brand: -0.01em;
    --weight-heading: 600;
    --weight-brand: 650;
    --weight-interface: 600;
}

:root[data-theme="dark"] {
    --ink: #edf2f7;
    --ink-strong: #d8e0e8;
    --ink-muted: #b8c2cf;
    --surface: #0c1119;
    --surface-subtle: #121923;
    --surface-muted: #1a2632;
    --line: #273240;
    --line-strong: #3b4858;
    --accent: #2bc8b1;
    --accent-dark: #50d6c3;
    --nav-surface: rgba(12, 17, 25, 0.86);
    --mobile-surface: #0c1119;
    --pill-surface: rgba(24, 31, 41, 0.8);
    --body-glow: rgba(0, 194, 168, 0.13);
    --body-glow-secondary: rgba(94, 122, 157, 0.08);
    --pointer-glow: rgba(0, 194, 168, 0.15);
    --theme-picker-surface: #181f29;
    --theme-picker-selection: #313a46;
    --theme-picker-shadow: 0 1px 2px rgb(0 0 0 / 28%);
    --focus-ring: rgb(56 216 192 / 55%);
    --shadow-sm: 0 12px 34px rgb(0 0 0 / 24%);
    --shadow-lg: 0 30px 84px rgb(0 0 0 / 34%);
}

/* --- RESET & BASE --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }

:focus-visible { outline: var(--stroke-width) solid var(--focus-ring); outline-offset: 2px; }

body {
    display: flex;
    flex-direction: column;
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--surface);
    background-image:
        radial-gradient(1200px circle at var(--cursor-x, 18%) var(--cursor-y, 8%), var(--body-glow), transparent 55%),
        radial-gradient(900px circle at 90% -10%, var(--body-glow-secondary), transparent 60%);
    line-height: var(--leading-body);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

.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;
}

.external-link-icon {
    display: inline-block;
    font-size: 0.9em;
    line-height: 1;
    margin-left: 0.35em;
}

body > *:not(.pointer-glow):not(.navbar) {
    position: relative;
    z-index: 1;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    letter-spacing: var(--tracking-heading);
    font-weight: var(--weight-heading);
    line-height: var(--leading-heading);
    color: var(--ink);
}

h1 { font-size: var(--text-display); }
h2 { font-size: var(--text-section-title); }
h3 { font-size: var(--text-card-title); letter-spacing: -0.02em; }
.card-title { font-size: var(--text-card-title); letter-spacing: -0.02em; }

.subhead {
    font-size: var(--text-lede);
    color: var(--text-muted);
    max-width: 60ch;
    margin-top: 1.25rem;
    line-height: var(--leading-lede);
}

.kicker {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent);
    display: block;
    margin-bottom: 1.5rem;
}

.section-header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.section-subhead {
    color: var(--text-muted);
    max-width: 62ch;
    font-size: var(--text-subhead);
}

/* --- LAYOUT UTILITIES --- */
.container { max-width: calc(var(--container-width) + 2 * var(--page-padding)); margin: 0 auto; padding: 0 var(--page-padding); }
.legal-page,
.about-page {
    max-width: 760px;
    padding: clamp(2.5rem, 5vw, 4rem) 1.5rem 5rem;
}

.legal-page h1,
.about-page h1 { font-size: var(--text-reading-title); }
.legal-page .legal-updated { margin-top: 0.5rem; color: var(--text-muted); }
.legal-content { margin-top: 2rem; }
.legal-content h2 { margin: 2rem 0 0.6rem; font-size: var(--text-section-compact); }
.legal-content h2:first-child { margin-top: 0; }

.about-page .subhead { margin-top: 0.75rem; font-size: var(--text-subhead); }
.about-page-content { margin-top: 2.25rem; }
.about-page-content > p + p { margin-top: 1.25rem; }
.about-page-content a { color: var(--accent-dark); text-underline-offset: 0.18em; }

.page-intro { padding: clamp(3rem, 5vw, 4.5rem) var(--page-padding) 2rem; }
.page-intro h1 { max-width: 22ch; font-size: var(--text-page-title); }
.page-intro .kicker { margin-bottom: 0.75rem; }
.page-intro .subhead { margin-top: 1rem; max-width: 68ch; font-size: var(--text-subhead); }
.page-intro .product-status { margin: 1rem 0 0; }
.page-intro .cta-row { margin-top: 1.75rem; }
.page-intro + section { padding-top: clamp(2.5rem, 4vw, 3.5rem); }

.product-page { display: flex; flex: 1; flex-direction: column; }
.product-page > .section-subtle { flex: 1; }
.product-intro { width: 100%; max-width: 820px; padding-inline: var(--page-padding); }
.product-intro .product-intro-icon { width: 48px; height: 48px; margin-bottom: 1.25rem; }

section { padding: clamp(2.5rem, 4.5vw, 4.5rem) 0; border-bottom: var(--stroke-width) solid var(--line); }
section:last-of-type { border-bottom: none; }

.section-subtle {
    background: var(--surface-subtle);
    border-top: var(--stroke-width) solid var(--line);
}

.grid { display: grid; gap: 2rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --- NAVIGATION --- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--nav-surface);
    backdrop-filter: blur(16px);
    border-bottom: var(--stroke-width) solid var(--line);
    height: 68px;
}

.nav-container { display: flex; align-items: center; justify-content: space-between; height: 100%; }

.logo {
    font-family: var(--font-display);
    font-weight: var(--weight-brand);
    font-size: 1.125rem;
    letter-spacing: var(--tracking-brand);
    text-decoration: none;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo:hover { opacity: 0.82; }

.logo img { height: 28px; width: auto; display: block; }

.nav-links { display: flex; gap: 1.5rem; align-items: center; }

.nav-item {
    text-decoration: none;
    color: var(--text-muted);
    font-size: var(--text-interface);
    font-weight: var(--weight-interface);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-item:hover { color: var(--ink); }
.nav-item.active { color: var(--ink); font-weight: 600; }

.nav-item::after {
    content: "";
    width: 0.85rem;
    height: 0.85rem;
    flex: 0 0 0.85rem;
    background-color: currentColor;
    -webkit-mask: url("/assets/icons/chevron-right.svg") no-repeat center / contain;
    mask: url("/assets/icons/chevron-right.svg") no-repeat center / contain;
    opacity: 0.45;
    transform: translateX(0);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.nav-item:hover::after,
.nav-item.active::after {
    opacity: 0.85;
    transform: translateX(2px);
}

.nav-item[target="_blank"]::after { display: none; }

.mobile-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--ink); font-size: 1.5rem; }
.mobile-menu {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--mobile-surface);
    border-bottom: var(--stroke-width) solid var(--line);
    padding: 1rem 0;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-item { justify-content: center; }

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.65rem;
    font-weight: var(--weight-interface);
    text-decoration: none;
    transition: transform 0.2s ease;
    font-size: var(--text-interface);
    cursor: pointer;
    border: var(--stroke-width) solid transparent;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--ink);
    color: var(--surface);
    border-color: var(--ink);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover { background: var(--ink-strong); transform: translateY(-1px); }

.btn-secondary {
    background: transparent;
    color: var(--ink);
    border-color: var(--line-strong);
}

.btn-secondary:hover {
    background: var(--surface-subtle);
    border-color: var(--ink);
}

.btn-sm {
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
}

/* --- ICONS --- */
.ui-icon {
    --icon-size: 1rem;
    --icon-url: none;
    display: inline-block;
    width: var(--icon-size);
    height: var(--icon-size);
    flex: 0 0 var(--icon-size);
    background-color: currentColor;
    -webkit-mask: var(--icon-url) no-repeat center / contain;
    mask: var(--icon-url) no-repeat center / contain;
}

.icon-sm { --icon-size: 1rem; }
.icon-md { --icon-size: 1.25rem; }
.icon-lg { --icon-size: 1.5rem; }

.with-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.with-icon .ui-icon { opacity: 0.88; }

/* --- HERO --- */
.hero {
    padding: clamp(3.5rem, 6vw, 5rem) 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
    align-items: center;
}

.hero-copy { display: flex; flex-direction: column; }

.cta-row {
    margin-top: 2.5rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-tags {
    margin-top: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.pill {
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    border: var(--stroke-width) solid var(--line);
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    background: var(--pill-surface);
}

.hero-visual {
    position: relative;
}

.hero-product-shot {
    width: min(100%, 760px);
    margin-left: auto;
}

.hero-screenshot-shell { position: relative; }

.hero-product-shot img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-product-shot img[data-theme-screenshot]:not([src]) { display: none; }

.hero-screenshot-crossfade {
    position: absolute;
    z-index: 1;
    inset: 0;
    opacity: 1;
    pointer-events: none;
    transition: opacity 180ms ease;
}

.hero-screenshot-crossfade.is-fading { opacity: 0; }

.hero-screenshot-trigger {
    position: absolute;
    z-index: 2;
    inset: 0;
    width: 100%;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: zoom-in;
}

.hero-screenshot-trigger[hidden] { display: none; }
.hero-screenshot-trigger:focus-visible { outline-offset: -4px; }

.screenshot-lightbox {
    width: min(96vw, 100rem);
    max-width: none;
    max-height: 92vh;
    margin: auto;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
    user-select: none;
}

.screenshot-lightbox::backdrop {
    background: rgb(0 0 0 / 72%);
    backdrop-filter: blur(5px);
}

.screenshot-lightbox-viewport {
    width: 100%;
    max-height: calc(92vh - 2px);
    padding: clamp(0.75rem, 2vw, 1.5rem);
    overflow: auto;
    overscroll-behavior: contain;
}

.screenshot-lightbox img {
    width: max(100%, 80rem);
    max-width: none;
    height: auto;
    cursor: zoom-out;
    -webkit-user-drag: none;
    user-select: none;
}

.screenshot-lightbox-close {
    position: absolute;
    z-index: 1;
    top: 0;
    right: clamp(0.75rem, 2vw, 1.5rem);
    display: grid;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    place-items: center;
    border: 0;
    background: transparent;
    color: var(--accent-dark);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0;
    line-height: 1;
}

.screenshot-lightbox-close span {
    display: grid;
    width: 1.25rem;
    height: 1.25rem;
    place-items: center;
    font-size: 1rem;
    transition: color 150ms ease, transform 150ms ease;
}

.screenshot-lightbox-close:hover span,
.screenshot-lightbox-close:focus-visible span {
    color: var(--accent);
    transform: scale(1.08);
}

.screenshot-lightbox-close:focus-visible { outline: none; }

/* --- CARDS --- */
.card {
    background: var(--surface);
    border: var(--stroke-width) solid var(--line);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
}

.card-icon {
    height: 42px;
    width: 42px;
    background: var(--surface-muted);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 1rem;
}

.card-icon .ui-icon {
    --icon-size: 1.25rem;
}

.product-mark {
    display: block;
    width: 1.75rem;
    height: 1.75rem;
    object-fit: contain;
}

.card-eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.product-status {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    margin: 1rem 0 1.5rem;
}

.text-link {
    margin-top: auto;
    color: var(--ink);
    text-decoration: none;
    font-weight: var(--weight-interface);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.text-link:hover { color: var(--accent); }

.product-grid .card { gap: 0; }
.product-grid .card-title { margin-bottom: 0.35rem; }
.product-grid .card p { color: var(--text-muted); }
.product-grid .card .product-status { margin: 0.85rem 0 0; font-size: 0.82rem; }
.product-grid .card .text-link { margin-top: auto; padding-top: 1.25rem; }

.detail-section { max-width: 820px; }
.detail-section h2 { font-size: var(--text-section-compact); }
.detail-section .section-subhead { margin-top: 0.7rem; }
.detail-section .feature-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem 2rem; margin-top: 1.75rem; }
.detail-note { border-top: var(--stroke-width) solid var(--line); margin-top: 2rem; padding-top: 1.25rem; color: var(--text-muted); font-size: 0.9rem; }
.detail-section .text-link { margin-top: 2rem; }

.feature-list {
    list-style: none;
    margin-top: 1.5rem;
    display: grid;
    gap: 0.85rem;
    color: var(--text-muted);
}

.feature-item {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
}

.feature-item .ui-icon {
    margin-top: 0.25rem;
    color: var(--ink);
    opacity: 0.7;
}

.conversation-section {
    border-bottom: none;
    padding-top: clamp(3rem, 5vw, 4.5rem);
    padding-bottom: clamp(3rem, 5vw, 4.5rem);
}

.conversation-section-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.conversation-section h2,
.conversation-section .subhead {
    text-align: center;
}

.conversation-heading { align-items: center; text-align: center; margin-bottom: 2rem; }

.conversation-section .subhead {
    margin-left: auto;
    margin-right: auto;
    max-width: 42rem;
}

.contact-form {
    display: grid;
    gap: 1.25rem;
    width: min(100%, 42rem);
    text-align: left;
}

.contact-form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.contact-field { display: grid; gap: 0.45rem; color: var(--ink); font-size: 0.9rem; font-weight: var(--weight-interface); }
.contact-field input,
.contact-field textarea {
    width: 100%;
    padding: 0.75rem 0.9rem;
    border: var(--stroke-width) solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--ink);
    font: inherit;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
}
.contact-field textarea { min-height: 9rem; resize: vertical; }
.contact-field textarea::placeholder { color: var(--text-muted); opacity: 0.85; }
.contact-field input:focus-visible,
.contact-field textarea:focus-visible {
    border-color: transparent;
    outline-offset: -1px;
}
.contact-honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.contact-form-actions { display: flex; align-items: center; gap: 1rem 1.5rem; flex-wrap: wrap; }
.contact-form-actions p { color: var(--text-muted); font-size: 0.9rem; }
.contact-form-actions a { color: var(--accent-dark); text-underline-offset: 0.18em; }
.contact-form button:disabled { cursor: wait; opacity: 0.7; }
.contact-form-status { color: var(--ink); font-size: 0.95rem; }
.contact-form-status:empty { display: none; }
.contact-form-status[data-state="success"] { color: var(--accent-dark); }
.contact-result { display: grid; align-content: center; justify-items: start; gap: 1.25rem; max-width: 42rem; min-height: 100vh; padding-block: 3rem; }
.contact-result .logo { margin-bottom: 0.5rem; }

/* --- PRINCIPLES --- */
.service-grid { margin-top: 1rem; }
.principle {
    padding: 1.5rem 0;
}

.principle h3 {
    margin-bottom: 0.35rem;
}

.principle p {
    color: var(--text-muted);
    font-size: 0.98rem;
}

/* --- FOOTER --- */
footer {
    padding: 3rem 0 2rem;
    background: var(--surface);
    border-top: var(--stroke-width) solid var(--line);
    margin-top: auto;
}

.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) max-content max-content; gap: 3rem; margin-bottom: 1.25rem; }
.footer-col h2 { font-size: 0.8rem; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1rem; letter-spacing: 0.12em; }
.footer-description { color: var(--text-muted); font-size: 0.9rem; max-width: 300px; }
.footer-col a { display: block; color: var(--text-main); text-decoration: none; margin-bottom: 0.75rem; font-size: 0.95rem; }
.footer-col a:hover { color: var(--accent); }
.footer-col .logo { display: inline-flex; align-items: center; gap: 0.55rem; font-size: 1.05rem; margin-bottom: 1rem; }
.footer-col .logo:hover { color: var(--ink); }
.footer-col .logo img { height: 24px; width: auto; }

.footer-col a:not(.logo) {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.footer-col a:not(.logo)::after {
    content: "";
    width: 0.85rem;
    height: 0.85rem;
    flex: 0 0 0.85rem;
    background-color: currentColor;
    -webkit-mask: url("/assets/icons/chevron-right.svg") no-repeat center / contain;
    mask: url("/assets/icons/chevron-right.svg") no-repeat center / contain;
    opacity: 0.45;
    transform: translateX(0);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.footer-col a:not(.logo):hover::after {
    opacity: 0.85;
    transform: translateX(2px);
}

.footer-col-legal a[href$="privacy.html"]::after {
    -webkit-mask: url("/assets/icons/shield-lock.svg") no-repeat center / contain;
    mask: url("/assets/icons/shield-lock.svg") no-repeat center / contain;
}

.footer-col-legal a[href$="terms.html"]::after {
    -webkit-mask: url("/assets/icons/checklist.svg") no-repeat center / contain;
    mask: url("/assets/icons/checklist.svg") no-repeat center / contain;
}

.footer-col-legal a[href^="mailto:"]::after {
    -webkit-mask: url("/assets/icons/mail.svg") no-repeat center / contain;
    mask: url("/assets/icons/mail.svg") no-repeat center / contain;
}
.legal-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: var(--stroke-width) solid var(--line);
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

.theme-picker {
    --theme-index: 0;
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 2.5rem);
    flex: 0 0 auto;
    padding: 0.25rem;
    border-radius: 999px;
    border: 0;
    background-color: var(--theme-picker-surface);
    box-shadow: inset 0 0 0 var(--stroke-width) var(--line);
}

.theme-picker[hidden] { display: none; }
.theme-picker[data-active-theme="light"] { --theme-index: 1; }
.theme-picker[data-active-theme="dark"] { --theme-index: 2; }

.theme-picker-indicator {
    position: absolute;
    z-index: 0;
    top: 0.375rem;
    left: 0.375rem;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: var(--theme-picker-selection);
    box-shadow: var(--theme-picker-shadow);
    pointer-events: none;
    transform: translateX(calc(var(--theme-index) * 2.5rem));
    transition: transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.theme-picker button {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 0;
    border-radius: 50%;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    color: var(--ink-muted);
    cursor: pointer;
    line-height: 0;
}

.theme-picker button:hover,
.theme-picker button[aria-pressed="true"] { color: var(--ink); }

.theme-choice-icon {
    display: block;
    width: 1rem;
    height: 1rem;
    background: currentColor;
    -webkit-mask: var(--theme-icon) no-repeat center / contain;
    mask: var(--theme-icon) no-repeat center / contain;
    pointer-events: none;
}

.theme-picker button[data-theme-choice="system"] { --theme-icon: url("/assets/icons/theme-monitor.svg"); }
.theme-picker button[data-theme-choice="light"] { --theme-icon: url("/assets/icons/theme-sun.svg"); }
.theme-picker button[data-theme-choice="dark"] { --theme-icon: url("/assets/icons/theme-moon.svg"); }

@media (prefers-reduced-motion: reduce) {
    .theme-picker-indicator { transition: none; }
    .hero-screenshot-crossfade { transition: none; }
}

/* --- POINTER GLOW --- */
.pointer-glow {
    position: fixed;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--pointer-glow), transparent 60%);
    mix-blend-mode: multiply;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
    left: 0;
    top: 0;
    transform: translate3d(-1200px, -1200px, 0);
    z-index: 0;
}

.pointer-glow.active { opacity: 1; }

:root[data-theme="dark"] .pointer-glow { mix-blend-mode: screen; }

@media (pointer: coarse) {
    .pointer-glow { display: none; }
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-product-shot {
        width: 100%;
        max-width: 760px;
        margin-left: 0;
    }
    .cta-row { width: 100%; }
    .cta-row .btn { width: 100%; justify-content: center; }
    .detail-section .feature-list { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .hero { padding-top: 3.5rem; }
    .section-header { margin-bottom: 1.5rem; }
    .principle { padding: 0.5rem 0; }
    .footer-grid { gap: 1.5rem; margin-bottom: 2rem; }
    .legal-line { flex-direction: column; align-items: flex-start; }
    .contact-form-row { grid-template-columns: 1fr; }
}