/* ==========================================================================
pandō DESIGN SYSTEM  v3.0
========================================================================== */

/* --- FONTS --- */
@font-face {
    font-family: 'Geist';
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url('../fonts/geist/GeistVF.woff2') format('woff2');
}

@font-face {
    font-family: 'Geist Mono';
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url('../fonts/geist/GeistMonoVF.woff2') format('woff2');
}

/* Crimson Pro - self-hosted (latin) */
@font-face {
    font-family: 'Crimson Pro';
    font-style: normal;
    font-weight: 300 600;
    font-display: swap;
    src: url('../fonts/crimson-pro/CrimsonPro-Regular.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Crimson Pro - self-hosted (latin-ext) */
@font-face {
    font-family: 'Crimson Pro';
    font-style: normal;
    font-weight: 300 600;
    font-display: swap;
    src: url('../fonts/crimson-pro/CrimsonPro-LatinExt.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Crimson Pro Italic - self-hosted (latin) */
@font-face {
    font-family: 'Crimson Pro';
    font-style: italic;
    font-weight: 300 400;
    font-display: swap;
    src: url('../fonts/crimson-pro/CrimsonPro-Italic.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Crimson Pro Italic - self-hosted (latin-ext) */
@font-face {
    font-family: 'Crimson Pro';
    font-style: italic;
    font-weight: 300 400;
    font-display: swap;
    src: url('../fonts/crimson-pro/CrimsonPro-Italic-LatinExt.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* --- TOKENS --- */
:root {
    /* Colors */
    --color-ink: #111111;
    --color-ink-soft: #1b1b1b;
    --color-paper: #fdfcfa;
    --color-paper-dim: #f4f1ec;
    --color-paper-dark: #e9e3da;
    --color-accent: #1b6b3a;
    --color-accent-subtle: rgba(27, 107, 58, 0.08);
    --color-accent-border: rgba(27, 107, 58, 0.35);
    --color-border: rgba(10, 10, 10, 0.12);
    --color-border-strong: rgba(10, 10, 10, 0.28);
    --color-border-subtle: rgba(10, 10, 10, 0.08);
    --color-border-section: rgba(10, 10, 10, 0.18);
    --color-shadow: rgba(12, 12, 12, 0.08);
    --color-shadow-strong: rgba(12, 12, 12, 0.18);
    --color-text-primary: #111111;
    --color-text-secondary: #4d4d4d;
    --color-text-tertiary: #5e5e5e;
    --color-error: #c04040;
    --color-dark-surface: #0c0c0c;
    --color-dark-surface-light: #1a1a1a;

    /* Semantic aliases for cross-page consistency */
    --text-primary: var(--color-text-primary);
    --text-secondary: var(--color-text-secondary);
    --text-tertiary: var(--color-text-tertiary);
    --accent-green: var(--color-accent);

    /* Typography - Font Families */
    --font-display: 'Crimson Pro', Georgia, serif;
    --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Geist Mono', 'SF Mono', monospace;

    /* Typography - Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Typography - Font Sizes (extended scale) */
    --font-size-2xs: 0.65rem;      /* 10.4px - zone labels, small caps */
    --font-size-xs: 0.75rem;       /* 12px */
    --font-size-sm: 0.875rem;      /* 14px */
    --font-size-body: 0.9375rem;   /* 15px - primary body text */
    --font-size-md: 1rem;          /* 16px */
    --font-size-lg: 1.125rem;      /* 18px */
    --font-size-xl: 1.25rem;       /* 20px */
    --font-size-2xl: 1.5rem;       /* 24px */
    --font-size-2-5xl: 1.75rem;    /* 28px */
    --font-size-3xl: 2rem;         /* 32px */
    --font-size-4xl: 2.25rem;      /* 36px */
    --font-size-badge: 0.6875rem;  /* 11px - badges, decorative labels */
    --font-size-ui-nav: 0.8125rem; /* 13px - nav/footer meta */
    --font-size-ui-sub: 0.9375rem; /* 15px - subtitle/list body */
    --font-size-logo: 1.7rem;      /* 27.2px - brand wordmark */

    /* Typography - Line Heights */
    --line-height-display: 1.05;
    --line-height-tight: 1.2;
    --line-height-snug: 1.4;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;

    /* Typography - Letter Spacing (negative tightens with size, positive widens for caps) */
    --tracking-tightest: -0.05em;
    --tracking-condensed: -0.03em;
    --tracking-tighter: -0.025em;
    --tracking-tight: -0.02em;
    --tracking-body: 0.005em;
    --tracking-narrow: 0.02em;
    --tracking-wide: 0.04em;
    --tracking-label: 0.1em;
    --tracking-caps: 0.08em;
    --tracking-display: 0.14em;
    --tracking-spread: 0.22em;
    --tracking-logo: 0.07em;

    /* Borders (aligned with Tailwind: sm=2, base=4, md=6, lg=10, xl=12) */
    --radius-sm: 2px;
    --radius-base: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 12px;

    /* Spacing (8px base grid - matches globals.css and Tailwind) */
    --space-0-25: 2px;  /*  0.25 * 8 */
    --space-0-5: 4px;   /*  0.5  * 8 */
    --space-1: 8px;     /*  1    * 8 */
    --space-1-5: 12px;  /*  1.5  * 8 */
    --space-2: 16px;    /*  2    * 8 */
    --space-2-5: 20px;  /*  2.5  * 8 */
    --space-3: 24px;    /*  3    * 8 */
    --space-4: 32px;    /*  4    * 8 */
    --space-5: 40px;    /*  5    * 8 */
    --space-6: 48px;    /*  6    * 8 */
    --space-7: 56px;    /*  7    * 8 */
    --space-8: 64px;    /*  8    * 8 */
    --space-10: 80px;   /* 10    * 8 */
    --space-12: 96px;   /* 12    * 8 */
    --space-16: 128px;  /* 16    * 8 */

    /* Inner borders / overlays */
    --color-inner-glow: rgba(255, 255, 255, 0.25);

    /* Content measure */
    --content-measure: 560px;
    --content-width-wide: 840px;

    /* Accent muted (for subtle accent borders/underlines) */
    --color-accent-muted: rgba(27, 107, 58, 0.30);

    /* Syntax / terminal colors (used on always-dark code surfaces) */
    --color-syntax-keyword: #7ec699;
    --color-syntax-success: #75bf8d;
    --color-syntax-error: #ef7c7c;
    --color-syntax-green: #77c48f;
    --color-syntax-warning-rgb: 175, 137, 80;

    /* Surfaces (glass/translucent backgrounds) */
    --surface-glass-light: rgba(255, 255, 255, 0.78);
    --surface-glass: rgba(255, 255, 255, 0.85);
    --surface-glass-strong: rgba(255, 255, 255, 0.92);
    --surface-header: rgba(253, 252, 250, 0.82);
    --surface-header-scroll: rgba(253, 252, 250, 0.92);
    --surface-header-deep: rgba(253, 252, 250, 0.97);
    --surface-tint: rgba(15, 15, 15, 0.03);
    --surface-accent-tint: rgba(27, 107, 58, 0.04);

    /* Shadows (elevation system) - aligned with globals.css */
    --shadow-rest: 0 1px 3px rgba(12, 12, 12, 0.06), 0 2px 6px rgba(12, 12, 12, 0.08);
    --shadow-button: 0 1px 2px rgba(12, 12, 12, 0.08);
    --shadow-button-hover: 0 2px 8px rgba(12, 12, 12, 0.12);
    --shadow-lift: 0 2px 8px rgba(12, 12, 12, 0.08), 0 4px 16px rgba(12, 12, 12, 0.10);
    --shadow-prominent: 0 4px 16px rgba(12, 12, 12, 0.12), 0 24px 48px rgba(12, 12, 12, 0.16);
    /* Cross-page aliases (match globals.css naming) */
    --shadow-paper-rest: var(--shadow-rest);
    --shadow-paper-lift: var(--shadow-lift);
    --shadow-paper-press: inset 0 1px 2px rgba(12, 12, 12, 0.12), 0 1px 2px rgba(12, 12, 12, 0.04);
    --shadow-card: 0 8px 24px rgba(12, 12, 12, 0.08), 0 2px 8px rgba(12, 12, 12, 0.06), 0 1px 3px rgba(12, 12, 12, 0.04);
    --shadow-drawer: -4px 0 16px var(--color-shadow-strong);
    --shadow-glow-accent: 0 0 0 1px rgba(27, 107, 58, 0.1), 0 4px 24px rgba(27, 107, 58, 0.08);

    /* Easing */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-pando: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Transition durations (aligned with Tailwind config) */
    --duration-fast: 120ms;
    --duration-normal: 200ms;
    --duration-slow: 300ms;

    /* Layout */
    --container-width: 1400px;
    --header-height: 64px;

    /* Backgrounds */
    --bg-primary: var(--color-paper);
    --bg-secondary: #f4f1ec;

    /* Mycelium */
    --mycelium-edge: rgba(27, 107, 58, 0.15);
    --mycelium-node: rgba(27, 107, 58, 0.4);

    /* RGB channel vars for opacity modifier support */
    --color-accent-rgb: 26, 122, 66;
    --color-ink-rgb: 17, 17, 17;
    --color-paper-rgb: 253, 252, 250;
    --color-error-rgb: 192, 64, 64;
    --color-warning-rgb: 160, 88, 16;
    --color-border-base-rgb: 10, 10, 10;
    --color-shadow-base-rgb: 12, 12, 12;
    --mycelium-edge-rgb: 34, 52, 40;
    --mycelium-node-rgb: 178, 215, 187;

    /* Static "always light" values for dark-on-dark-surface sections */
    --color-paper-static: #fdfcfa;
    --color-paper-static-rgb: 253, 252, 250;
    --color-ink-static: #111111;

    /* Mobile nav */
    --mobile-nav-width: 280px;
}

/* --- DARK MODE: Midnight Herbarium --- */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;

        /* Core palette */
        --color-ink: #e8e4df;
        --color-ink-soft: #d4d0ca;
        --color-paper: #0e110f;
        --color-paper-dim: #161a17;
        --color-paper-dark: #1e231f;
        --color-accent: #4a8c62;
        --color-accent-subtle: rgba(74, 140, 98, 0.12);
        --color-accent-border: rgba(74, 140, 98, 0.40);

        /* Text */
        --color-text-primary: #e8e4df;
        --color-text-secondary: #a8a49e;
        --color-text-tertiary: #8a8580;
        --color-error: #e05555;
        --color-dark-surface: #080a08;
        --color-dark-surface-light: #121512;

        /* RGB channels */
        --color-accent-rgb: 74, 140, 98;
        --color-ink-rgb: 232, 228, 223;
        --color-paper-rgb: 14, 17, 15;
        --color-error-rgb: 224, 85, 85;
        --color-warning-rgb: 208, 128, 48;
        --color-border-base-rgb: 255, 255, 255;
        --color-shadow-base-rgb: 0, 0, 0;
        --mycelium-edge-rgb: 74, 140, 98;
        --mycelium-node-rgb: 120, 200, 140;

        /* Borders — flipped to white-based */
        --color-border: rgba(255, 255, 255, 0.12);
        --color-border-strong: rgba(255, 255, 255, 0.24);
        --color-border-subtle: rgba(255, 255, 255, 0.08);
        --color-border-section: rgba(255, 255, 255, 0.15);
        --color-shadow: rgba(0, 0, 0, 0.20);
        --color-shadow-strong: rgba(0, 0, 0, 0.35);

        /* Inner glow — green bioluminescence */
        --color-inner-glow: rgba(74, 140, 98, 0.15);

        /* Surfaces — flipped to dark-based */
        --surface-glass-light: rgba(22, 26, 23, 0.78);
        --surface-glass: rgba(22, 26, 23, 0.85);
        --surface-glass-strong: rgba(22, 26, 23, 0.92);
        --surface-header: rgba(14, 17, 15, 0.82);
        --surface-header-scroll: rgba(14, 17, 15, 0.92);
        --surface-header-deep: rgba(14, 17, 15, 0.97);
        --surface-tint: rgba(255, 255, 255, 0.03);
        --surface-accent-tint: rgba(74, 140, 98, 0.06);

        /* Shadows — deeper blacks + subtle green glow */
        --shadow-rest: 0 1px 3px rgba(0, 0, 0, 0.20), 0 2px 6px rgba(0, 0, 0, 0.25);
        --shadow-button: 0 1px 2px rgba(0, 0, 0, 0.25);
        --shadow-button-hover: 0 2px 8px rgba(0, 0, 0, 0.30), 0 0 12px rgba(74, 140, 98, 0.08);
        --shadow-lift: 0 2px 8px rgba(0, 0, 0, 0.25), 0 4px 16px rgba(0, 0, 0, 0.30);
        --shadow-prominent: 0 4px 16px rgba(0, 0, 0, 0.30), 0 24px 48px rgba(0, 0, 0, 0.40);
        --shadow-paper-rest: var(--shadow-rest);
        --shadow-paper-lift: var(--shadow-lift);
        --shadow-paper-press: inset 0 1px 2px rgba(0, 0, 0, 0.30), 0 1px 2px rgba(0, 0, 0, 0.15);
        --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25), 0 2px 8px rgba(0, 0, 0, 0.20), 0 0 1px rgba(74, 140, 98, 0.08);
        --shadow-drawer: -4px 0 16px var(--color-shadow-strong);
        --shadow-glow-accent: 0 0 0 1px rgba(74, 140, 98, 0.20), 0 4px 24px rgba(74, 140, 98, 0.15);

        /* Backgrounds */
        --bg-primary: var(--color-paper);
        --bg-secondary: #161a17;

        /* Mycelium — bioluminescent */
        --mycelium-edge: rgba(74, 140, 98, 0.20);
        --mycelium-node: rgba(120, 200, 140, 0.5);
    }
}

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

    --color-ink: #e8e4df;
    --color-ink-soft: #d4d0ca;
    --color-paper: #0e110f;
    --color-paper-dim: #161a17;
    --color-paper-dark: #1e231f;
    --color-accent: #4a8c62;
    --color-accent-subtle: rgba(74, 140, 98, 0.12);
    --color-accent-border: rgba(74, 140, 98, 0.40);

    --color-text-primary: #e8e4df;
    --color-text-secondary: #a8a49e;
    --color-text-tertiary: #8a8580;
    --color-error: #e05555;
    --color-dark-surface: #080a08;
    --color-dark-surface-light: #121512;

    --color-accent-rgb: 74, 140, 98;
    --color-ink-rgb: 232, 228, 223;
    --color-paper-rgb: 14, 17, 15;
    --color-error-rgb: 224, 85, 85;
    --color-warning-rgb: 208, 128, 48;
    --color-border-base-rgb: 255, 255, 255;
    --color-shadow-base-rgb: 0, 0, 0;
    --mycelium-edge-rgb: 74, 140, 98;
    --mycelium-node-rgb: 120, 200, 140;

    --color-border: rgba(255, 255, 255, 0.12);
    --color-border-strong: rgba(255, 255, 255, 0.24);
    --color-border-subtle: rgba(255, 255, 255, 0.08);
    --color-border-section: rgba(255, 255, 255, 0.15);
    --color-shadow: rgba(0, 0, 0, 0.20);
    --color-shadow-strong: rgba(0, 0, 0, 0.35);

    --color-inner-glow: rgba(74, 140, 98, 0.15);

    --surface-glass-light: rgba(22, 26, 23, 0.78);
    --surface-glass: rgba(22, 26, 23, 0.85);
    --surface-glass-strong: rgba(22, 26, 23, 0.92);
    --surface-header: rgba(14, 17, 15, 0.82);
    --surface-header-scroll: rgba(14, 17, 15, 0.92);
    --surface-header-deep: rgba(14, 17, 15, 0.97);
    --surface-tint: rgba(255, 255, 255, 0.03);
    --surface-accent-tint: rgba(74, 140, 98, 0.06);

    --shadow-rest: 0 1px 3px rgba(0, 0, 0, 0.20), 0 2px 6px rgba(0, 0, 0, 0.25);
    --shadow-button: 0 1px 2px rgba(0, 0, 0, 0.25);
    --shadow-button-hover: 0 2px 8px rgba(0, 0, 0, 0.30), 0 0 12px rgba(74, 140, 98, 0.08);
    --shadow-lift: 0 2px 8px rgba(0, 0, 0, 0.25), 0 4px 16px rgba(0, 0, 0, 0.30);
    --shadow-prominent: 0 4px 16px rgba(0, 0, 0, 0.30), 0 24px 48px rgba(0, 0, 0, 0.40);
    --shadow-paper-rest: var(--shadow-rest);
    --shadow-paper-lift: var(--shadow-lift);
    --shadow-paper-press: inset 0 1px 2px rgba(0, 0, 0, 0.30), 0 1px 2px rgba(0, 0, 0, 0.15);
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25), 0 2px 8px rgba(0, 0, 0, 0.20), 0 0 1px rgba(74, 140, 98, 0.08);
    --shadow-drawer: -4px 0 16px var(--color-shadow-strong);
    --shadow-glow-accent: 0 0 0 1px rgba(74, 140, 98, 0.20), 0 4px 24px rgba(74, 140, 98, 0.15);

    --bg-primary: var(--color-paper);
    --bg-secondary: #161a17;

    --mycelium-edge: rgba(74, 140, 98, 0.20);
    --mycelium-node: rgba(120, 200, 140, 0.5);
}

/* Dark mode selection */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) ::selection {
        background: rgba(74, 140, 98, 0.25);
        color: #e8e4df;
    }
    :root:not([data-theme="light"]) {
        scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
    }
}
[data-theme="dark"] ::selection {
    background: rgba(74, 140, 98, 0.25);
    color: #e8e4df;
}
[data-theme="dark"] {
    scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

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

/* Print: force light palette */
@media print {
    :root {
        --color-ink: #111111 !important;
        --color-paper: #ffffff !important;
        --color-text-primary: #111111 !important;
        --color-text-secondary: #4d4d4d !important;
        --bg-primary: #ffffff !important;
        --bg-secondary: #f4f1ec !important;
        color-scheme: light !important;
    }
}

/* Dark mode: logo text-shadow lighter for visibility */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .logo {
        text-shadow: 0 0 0.6px rgba(232, 228, 223, 0.25);
    }
}
[data-theme="dark"] .logo {
    text-shadow: 0 0 0.6px rgba(232, 228, 223, 0.25);
}

/* Smooth theme transitions (applied after first toggle to prevent FOUC) */
body.theme-transitions-ready,
body.theme-transitions-ready *:not(.btn):not(a):not(button),
body.theme-transitions-ready *:not(.btn):not(a):not(button)::before,
body.theme-transitions-ready *:not(.btn):not(a):not(button)::after {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* --- RESET & GLOBAL --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Form elements don't inherit font by default */
button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--color-paper);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    line-height: var(--line-height-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom selection colors */
::selection {
    background: rgba(27, 107, 58, 0.15);
    color: var(--color-ink);
}

/* Medium-5: .loaded body class for page load transition */
body.loaded {
    opacity: 1;
}

body::before {
    display: none;
}

/* Mycelium Canvas Layer */
#mycelium-background {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    opacity: 1;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4 {
    color: var(--color-ink);
    font-weight: var(--font-weight-normal);
    text-wrap: balance;
}

h1 {
    font-family: var(--font-display);
    font-size: clamp(3.4rem, 6.5vw, 6rem);
    line-height: var(--line-height-display);
    letter-spacing: var(--tracking-tighter);
}

h2 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 3.8vw, 3.25rem);
    line-height: var(--line-height-tight);
    letter-spacing: var(--tracking-tight);
    font-weight: var(--font-weight-light);
}

h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    line-height: var(--line-height-tight);
}

h4 {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
}

.mono-text {
    font-family: var(--font-mono);
}

.italic-accent {
    font-family: var(--font-display);
    font-style: italic;
    color: var(--color-accent);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--duration-normal) ease, transform var(--duration-normal) ease;
}

/* --- COMPONENTS: BUTTONS --- */
/* Unified Button System */

/* Base button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    font-family: var(--font-mono);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    border-radius: var(--radius-base);
    cursor: pointer;
    transition:
        color var(--duration-fast) ease-out,
        background-color var(--duration-fast) ease-out,
        border-color var(--duration-fast) ease-out,
        box-shadow var(--duration-normal) ease-out,
        transform var(--duration-fast) ease-out;
    white-space: nowrap;
    text-align: center;
    user-select: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    border: 1px solid transparent;
}

/* Button Sizes */
.btn {
    /* Default: medium size (aligned with React Button component) */
    min-height: 44px;
    padding: 10px calc(var(--space-4) + 0.1rem);
    font-size: var(--font-size-ui-nav);
    line-height: 1;
}

/* Gloss overlay removed — flat surfaces for developer-tool aesthetic */

.btn-xs {
    min-height: 28px;
    padding: var(--space-1) 10px;
    font-size: var(--font-size-xs);
}

.btn-small {
    min-height: 36px;
    padding: 6px var(--space-3);
    font-size: var(--font-size-xs);
}

.btn-large {
    min-height: 48px;
    padding: 12px calc(var(--space-5) + 0.1rem);
    font-size: var(--font-size-sm);
}

.check-icon {
    display: none;
}

.install-copy-btn.is-copied .copy-icon {
    display: none;
}

.install-copy-btn.is-copied .check-icon {
    display: block;
}

.install-command-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    min-height: 48px;
    padding: 0.28rem 0.36rem 0.28rem 0.42rem;
    border: 1px solid var(--color-ink);
    border-radius: var(--radius-base);
    background: var(--color-ink);
    box-shadow: 0 1px 3px rgba(var(--color-shadow-base-rgb), 0.1), 0 4px 12px rgba(var(--color-shadow-base-rgb), 0.08);
    transition: background var(--duration-fast) ease, border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease, transform var(--duration-fast) ease;
}

.install-command-cta:hover,
.install-command-cta:focus-within {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 2px 6px rgba(var(--color-accent-rgb), 0.12), 0 8px 16px rgba(var(--color-accent-rgb), 0.1);
    transform: translateY(-1px);
}

.install-command-label {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: var(--font-size-2xs);
    line-height: 1;
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-accent);
    padding: 0.46rem 0.54rem;
    border-radius: calc(var(--radius-sm) - 1px);
    background: rgba(var(--color-accent-rgb), 0.09);
    box-shadow: inset 0 0 0 1px rgba(var(--color-accent-rgb), 0.06);
}

.install-command-cta .install-command-label {
    color: var(--color-paper);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.install-command-text {
    font-family: var(--font-mono);
    font-size: var(--font-size-ui-nav);
    line-height: 1;
    letter-spacing: var(--tracking-wide);
    color: var(--color-ink);
    white-space: nowrap;
    padding: 0.46rem 0.72rem 0.46rem 0.18rem;
    user-select: all;
}

.install-command-cta .install-command-text {
    color: var(--color-paper);
}

.install-copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.82rem;
    height: 1.82rem;
    border: 1px solid rgba(var(--color-accent-rgb), 0.12);
    border-radius: var(--radius-sm);
    background: rgba(var(--color-accent-rgb), 0.04);
    color: var(--color-text-secondary);
    cursor: pointer;
    flex-shrink: 0;
    transition: color var(--duration-fast) var(--ease-pando), border-color var(--duration-fast) var(--ease-pando), background-color var(--duration-fast) var(--ease-pando), transform var(--duration-fast) var(--ease-pando);
}

.install-copy-btn:hover,
.install-copy-btn:focus-visible {
    color: var(--color-accent);
    border-color: rgba(var(--color-accent-rgb), 0.3);
    background: rgba(var(--color-accent-rgb), 0.1);
}

.install-copy-btn:active {
    background: rgba(var(--color-accent-rgb), 0.14);
    transform: translateY(1px);
}

.install-command-cta .install-copy-btn {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-paper);
}

.install-command-cta .install-copy-btn:hover,
.install-command-cta .install-copy-btn:focus-visible {
    color: var(--color-paper);
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.16);
}

.install-command-cta .install-copy-btn:active {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(1px);
}

.product-cta .install-command-cta,
.legal-cta-actions .install-command-cta,
.cta-actions .install-command-cta,
.hero-actions .install-command-cta,
.cta-buttons .install-command-cta,
.product-cta .btn,
.legal-cta-actions .btn,
.cta-actions .btn,
.hero-actions .btn,
.cta-buttons .btn {
    flex: 1 1 auto;
    min-width: 220px;
    max-width: 320px;
    text-align: center;
    justify-content: center;
}

/* Primary Button */
.btn-primary {
    background: var(--color-ink);
    color: var(--color-paper);
    border-color: var(--color-ink);
    box-shadow: 0 1px 3px rgba(var(--color-shadow-base-rgb), 0.1), 0 4px 12px rgba(var(--color-shadow-base-rgb), 0.08);
}

.btn-primary:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 2px 6px rgba(var(--color-accent-rgb), 0.12), 0 8px 16px rgba(var(--color-accent-rgb), 0.1);
    transform: translateY(-1px);
}

.btn-primary:active {
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.16);
    transform: translateY(1px);
    filter: brightness(0.94);
}

/* Secondary Button */
.btn-secondary {
    background: rgba(var(--color-paper-rgb), 0.7);
    color: var(--color-ink);
    border-color: var(--color-border-strong);
    box-shadow: 0 1px 3px rgba(var(--color-shadow-base-rgb), 0.06);
}

.btn-secondary:hover {
    background: rgba(var(--color-paper-rgb), 0.82);
    color: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 2px 6px rgba(var(--color-shadow-base-rgb), 0.08);
    transform: translateY(-1px);
}

.btn-secondary:active {
    color: var(--color-accent);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.08);
    transform: translateY(1px);
    filter: brightness(0.97);
}

/* Outline Button */
.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: none;
}

.btn-outline:hover {
    background: rgba(var(--color-accent-rgb), 0.06);
    box-shadow: 0 2px 8px rgba(var(--color-accent-rgb), 0.08);
}

.btn-outline:active {
    background: rgba(var(--color-accent-rgb), 0.10);
    box-shadow: inset 0 2px 5px rgba(var(--color-accent-rgb), 0.1);
    transform: translateY(1px);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: transparent;
    box-shadow: none;
}

.btn-ghost:hover {
    color: var(--color-text-primary);
    background: rgba(var(--color-accent-rgb), 0.05);
    border-color: rgba(var(--color-accent-rgb), 0.12);
}

.btn-ghost:active {
    background: rgba(var(--color-accent-rgb), 0.10);
    transform: translateY(1px);
}

/* Danger Button */
.btn-danger {
    background: var(--color-paper);
    color: var(--color-error);
    border: 1px solid var(--color-error);
    box-shadow: 0 1px 2px rgba(var(--color-error-rgb), 0.1);
}

.btn-danger:hover {
    background: rgba(var(--color-error-rgb), 0.05);
    box-shadow: 0 2px 4px rgba(var(--color-error-rgb), 0.15);
}

.btn-danger:active {
    box-shadow: inset 0 2px 6px rgba(var(--color-error-rgb), 0.14);
    transform: translateY(1px);
    filter: brightness(0.98);
}

/* Focus states */
.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

/* Disabled state */
.btn:disabled,
.btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Social Button */
.btn-social {
    background: rgba(var(--color-paper-rgb), 0.68);
    color: var(--color-ink);
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 3px rgba(var(--color-shadow-base-rgb), 0.06);
}

.btn-social:hover {
    background: rgba(var(--color-paper-rgb), 0.8);
    color: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 2px 6px rgba(var(--color-shadow-base-rgb), 0.08);
    transform: translateY(-1px);
}

.btn-social:active {
    color: var(--color-accent);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.08);
    transform: translateY(1px);
    filter: brightness(0.98);
}

/* Icon Button Sizes */
.btn-icon-xs {
    width: 28px;
    height: 28px;
    min-height: 28px;
    padding: 0;
    gap: 0;
    font-size: var(--font-size-xs);
    border-radius: calc(var(--radius-sm) + 2px);
}

.btn-icon-small {
    width: 36px;
    height: 36px;
    min-height: 36px;
    padding: 0;
    gap: 0;
    font-size: var(--font-size-sm);
    border-radius: calc(var(--radius-sm) + 2px);
}

.btn-icon-medium {
    width: 44px;
    height: 44px;
    min-height: 44px;
    padding: 0;
    gap: 0;
    font-size: var(--font-size-md);
    border-radius: calc(var(--radius-sm) + 2px);
}

/* Theme toggle button */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    flex-shrink: 0;
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) ease, border-color var(--duration-fast) ease, background-color var(--duration-fast) ease;
}

.theme-toggle svg {
    display: block;
    flex-shrink: 0;
}

.theme-toggle:hover {
    color: var(--color-text-primary);
}

.theme-toggle:active {
    transform: translateY(1px);
}

/* Default icon visibility — sun/moon hidden, system shown.
   JS toggles via CSSOM (element.style.display) which is CSP-safe. */
.theme-icon-sun,
.theme-icon-moon {
    display: none;
}

/* Full-width button modifier */
.btn-block {
    width: 100%;
}

/* --- LAYOUT UTILS --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
    position: relative;
    z-index: 2;
}

section {
    position: relative;
}

/* Section dividers removed for cleaner visual flow */

/* --- HEADER --- */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: transparent;
    border-bottom: none;
    z-index: 100;
    display: flex;
    align-items: center;
}

#main-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--surface-header);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent);
    mask-image: linear-gradient(to bottom, black 50%, transparent);
    z-index: -1;
    pointer-events: none;
}

#main-header .container {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: var(--font-size-logo);
    font-weight: var(--font-weight-light);
    color: var(--color-ink);
    letter-spacing: var(--tracking-logo);
    text-transform: lowercase;
    text-rendering: optimizeLegibility;
    font-feature-settings: "kern" 1, "liga" 1;
    text-shadow: 0 0 0.6px rgba(12, 12, 12, 0.25);
}

.logo .underscore {
    color: var(--color-accent);
    display: inline-block;
    animation: blink 1.5s infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ── Logo popover (etymology card) ── */
.logo-wrap {
    position: relative;
}

.logo-popover {
    position: absolute;
    top: calc(100% + 8px);
    left: -4px;
    width: 480px;
    padding: var(--space-2-5) var(--space-3);
    background: var(--color-paper);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 14px rgba(12, 12, 12, 0.06);
    z-index: 110;

    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition:
        opacity 400ms var(--ease-out-expo),
        visibility 400ms var(--ease-out-expo),
        transform 400ms var(--ease-out-expo);
    pointer-events: none;
}

.logo-popover.is-visible,
.logo-wrap:focus-within .logo-popover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.logo-popover.is-hiding {
    transition-duration: 200ms;
}

/* Popover content typography */
.popover-label {
    font-family: var(--font-mono);
    font-size: var(--font-size-badge);
    font-weight: 500;
    letter-spacing: var(--tracking-spread);
    text-transform: uppercase;
    color: var(--color-accent);
    margin: 0 0 6px;
}

.popover-rule {
    border: none;
    height: 1px;
    background: var(--color-accent-border);
    margin: 0 0 8px;
}

.popover-word {
    font-family: var(--font-display);
    font-style: italic;
    font-size: var(--font-size-lg);
    color: var(--color-ink);
    margin: 0 0 2px;
    line-height: 1.3;
}

.popover-defn {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin: 0 0 8px;
}

.popover-stats {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    letter-spacing: var(--tracking-narrow);
    margin: 0 0 6px;
}

.popover-desc {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal, 1.55);
    margin: 0;
}

/* Stop the underscore blink when popover is open */
.logo-wrap.popover-active .logo .underscore {
    animation: none;
    opacity: 1;
}

/* Hide popover on touch devices and narrow screens */
@media (max-width: 767px) {
    .logo-popover { display: none; }
}

@media (hover: none) {
    .logo-popover { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .logo .underscore,
    .fallback-logo .underscore,
    .hero-brand .underscore,
    .sch-caret {
        animation: none;
        opacity: 1;
    }
}

@keyframes network-reveal {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#main-nav {
    display: flex;
    gap: var(--space-0-5);
    align-items: center;
    justify-self: center;
}

.header-actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: var(--space-1-5);
}

/* Nav auth button uses .btn .btn-secondary .btn-small classes directly */

/* Hide mobile-only elements on desktop */
.nav-auth-mobile {
    display: none;
}

.nav-theme-toggle {
    display: none;
}

#main-nav a {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    padding: 6px var(--space-1-5);
    border-radius: var(--radius-base);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
}

#main-nav a:hover {
    color: var(--color-ink);
    background: var(--color-accent-subtle);
}

/* Medium-6: focus-visible on nav links */
#main-nav a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    color: var(--color-ink);
}

/* (auth-aware styles moved to #nav-auth above) */

/* ============================================================================
   HERO SECTION
   ============================================================================ */
#hero {
    padding-top: calc(var(--header-height) + var(--space-12));
    padding-bottom: var(--space-10);
    text-align: left;
    background: var(--color-paper);
}

#hero .container {
    display: grid;
    grid-template-columns: 0.78fr 1.42fr;
    gap: var(--space-6);
    align-items: center;
}

.hero-editorial {
    max-width: 560px;
    margin: 0;
}

.hero-headline {
    font-size: clamp(3.2rem, 5.5vw, 5.5rem);
    line-height: 1;
    letter-spacing: var(--tracking-tighter);
    font-feature-settings: "kern" 1, "liga" 1;
    margin-bottom: var(--space-4);
}

.hero-brand {
    display: block;
    font-family: var(--font-display);
    font-weight: var(--font-weight-light);
    font-style: normal;
    color: var(--color-ink);
    letter-spacing: var(--tracking-logo);
}

.hero-brand .underscore {
    color: var(--color-accent);
    display: inline-block;
    animation: blink 1.5s infinite;
}

.hero-claim {
    display: block;
    font-family: var(--font-sans);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    font-style: normal;
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    margin-bottom: var(--space-2);
    letter-spacing: var(--tracking-wide);
    line-height: var(--line-height-normal);
}

/* hero-description styled in landing-sections.css */

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    align-items: stretch;
}

/* Hero CTA buttons — same height, hierarchy via fill/outline */
.hero-actions .btn-primary {
    font-weight: var(--font-weight-medium);
}

/* --- Hero Video Terminal --- */
.hero-visual {
    position: relative;
    width: 100%;
    max-width: 1040px;
    justify-self: end;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, var(--color-dark-surface-light) 0%, var(--color-dark-surface) 100%);
    overflow: hidden;
    box-shadow:
        0 4px 12px rgba(12, 12, 12, 0.15),
        0 16px 40px rgba(12, 12, 12, 0.12),
        0 36px 70px rgba(12, 12, 12, 0.08);
    isolation: isolate;
}

@media (min-width: 1280px) {
    #hero .container {
        grid-template-columns: 0.8fr 1.4fr;
        gap: var(--space-7);
    }

    .hero-editorial {
        max-width: 600px;
    }

    .hero-headline {
        font-size: clamp(3.5rem, 5vw, 5.5rem);
    }

    .hero-visual {
        max-width: 1200px;
    }
}

/* Terminal title bar */
.hero-visual .terminal-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 11px 14px;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
    border-bottom: 1px solid rgba(255,255,255,0.07);
    position: relative;
}

.hero-visual .terminal-bar .terminal-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

.hero-visual .terminal-bar .terminal-dot:first-child { background: rgba(255, 95, 87, 0.8); }
.hero-visual .terminal-bar .terminal-dot:nth-child(2) { background: rgba(254, 188, 46, 0.8); }
.hero-visual .terminal-bar .terminal-dot:nth-child(3) { background: rgba(40, 200, 64, 0.8); }

.hero-visual .terminal-bar .terminal-title {
    font-family: var(--font-mono);
    font-size: var(--font-size-badge);
    color: rgba(255,255,255,0.45);
    letter-spacing: var(--tracking-wide);
}

.hero-visual .terminal-bar .terminal-title-group {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.hero-visual .terminal-bar .terminal-verified {
    font-family: var(--font-mono);
    font-size: var(--font-size-badge);
    color: rgba(94, 199, 120, 0.85);
    border: 1px solid rgba(94, 199, 120, 0.35);
    background: rgba(58, 107, 74, 0.24);
    border-radius: 999px;
    padding: 2px 7px;
    letter-spacing: 0.01em;
    text-decoration: none;
}

.hero-visual .terminal-bar .terminal-verified:hover {
    color: rgba(130, 231, 154, 0.95);
    border-color: rgba(94, 199, 120, 0.55);
}

.hero-visual .terminal-bar .terminal-replay-btn {
    appearance: none;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.35);
    font-size: var(--font-size-ui-nav);
    line-height: 1;
    padding: 2px;
    cursor: pointer;
    margin-left: auto;
    transition: color 150ms ease;
}

.hero-visual .terminal-bar .terminal-replay-btn:hover {
    color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
    .hero-visual .terminal-bar .terminal-verified {
        display: none;
    }

    .hero-visual .terminal-bar .terminal-replay-btn {
        display: none;
    }

}

.site-tooltip {
    position: fixed;
    left: 0;
    top: 0;
    transform: translate(-50%, -6px);
    opacity: 0;
    pointer-events: none;
    z-index: 2000;
    background: var(--color-dark-surface);
    color: rgba(245, 245, 245, 0.92);
    border: 1px solid rgba(var(--color-accent-rgb), 0.25);
    border-radius: 5px;
    padding: 5px 7px;
    font-family: var(--font-mono);
    font-size: var(--font-size-badge);
    line-height: var(--line-height-tight);
    white-space: nowrap;
    transition: opacity 120ms ease, transform 120ms ease;
}

.site-tooltip.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* Loading/error fallback for hero video area */
.hero-visual--fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-4);
    color: rgba(255, 255, 255, 0.7);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    letter-spacing: var(--tracking-caps);
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--color-dark-surface) 0%, var(--color-dark-surface-light) 50%, var(--color-dark-surface) 100%);
}

.hero-visual--fallback .fallback-logo {
    font-family: var(--font-display);
    font-size: var(--font-size-logo);
    font-weight: var(--font-weight-light);
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: var(--tracking-logo);
    text-transform: lowercase;
    text-rendering: optimizeLegibility;
    font-feature-settings: "kern" 1, "liga" 1;
    text-shadow: 0 0 0.6px rgba(255, 255, 255, 0.25);
    margin-bottom: var(--space-1);
}

.hero-visual--fallback .fallback-logo .underscore {
    color: var(--color-accent);
    display: inline-block;
    animation: blink 1.5s infinite;
}

.hero-visual--fallback .fallback-text {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-xs);
}

/* Inner glow on video frame */
.hero-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.10),
        inset 0 0 0 1px rgba(255, 255, 255, 0.07);
    pointer-events: none;
    z-index: 2;
}

/* Ambient glow behind the terminal */
.hero-visual::after {
    content: '';
    position: absolute;
    inset: -24px;
    z-index: -1;
    background: radial-gradient(ellipse at center, rgba(var(--color-accent-rgb), 0.13), rgba(var(--color-accent-rgb), 0.03) 42%, transparent 72%);
    filter: blur(8px);
    pointer-events: none;
    border-radius: 50%;
}

figure.visual-frame,
.visual-frame {
    aspect-ratio: 16/9;
    position: relative;
    margin: 0;
}

.visual-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.92;
}

/* ============================================================================
   TOOL DEMOS SECTION — Relocated interactive demo
   ============================================================================ */
#tool-demos {
    padding: var(--space-8) 0 var(--space-10);
    background: transparent;
    border-top: none;
}

#tool-demos .section-head {
    max-width: 780px;
    margin: 0 auto var(--space-6);
    text-align: center;
}

.tool-demo-visual {
    position: relative;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, var(--color-dark-surface-light) 0%, var(--color-dark-surface) 100%);
    overflow: hidden;
    box-shadow:
        0 10px 30px rgba(12, 12, 12, 0.18),
        0 36px 70px rgba(12, 12, 12, 0.18);
    isolation: isolate;
}

.tool-demo-visual .terminal-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 11px 14px;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
    border-bottom: 1px solid rgba(255,255,255,0.07);
    position: relative;
}

.tool-demo-visual .terminal-bar .terminal-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

.tool-demo-visual .terminal-bar .terminal-dot:first-child { background: rgba(255, 95, 87, 0.8); }
.tool-demo-visual .terminal-bar .terminal-dot:nth-child(2) { background: rgba(254, 188, 46, 0.8); }
.tool-demo-visual .terminal-bar .terminal-dot:nth-child(3) { background: rgba(40, 200, 64, 0.8); }

.tool-demo-visual .terminal-bar .terminal-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: var(--font-size-badge);
    color: rgba(255,255,255,0.45);
    letter-spacing: var(--tracking-wide);
    pointer-events: none;
}

/* Inner glow on tool-demo frame */
.tool-demo-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.10),
        inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    pointer-events: none;
    z-index: 2;
}

@media (max-width: 1024px) {
    .tool-demo-visual {
        max-width: 760px;
    }
}

@media (max-width: 768px) {
    #tool-demos {
        padding: var(--space-6) 0 var(--space-6);
    }
}


/* ============================================================================
   FEATURES SECTION — "OBSERVATION DECK"
   Dark viewport with frosted caption bar, sliding-underline tab strip
   ============================================================================ */
/* Features tabs are now inside #why section — keep class-level styles below */

.features-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

/* --- Tab strip: centered, text-only, underline selector --- */
.features-list {
    display: flex;
    justify-content: flex-start;
    gap: var(--space-5);
    position: relative;
    padding-bottom: var(--space-0-5);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.features-list::-webkit-scrollbar { display: none; }

.feature-list-item {
    flex: 0 0 auto;
    cursor: pointer;
}

.feature-list-button {
    display: flex;
    align-items: baseline;
    gap: var(--space-1-5);
    background: transparent;
    border: none;
    padding: var(--space-1) 0 var(--space-1-5);
    cursor: pointer;
    color: inherit;
    white-space: nowrap;
}

.feature-list-button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: var(--radius-base);
}

.feature-list-number {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: var(--tracking-caps);
    color: var(--color-text-tertiary);
    transition: color var(--duration-fast) ease;
}

.feature-list-title {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    transition: color var(--duration-fast) ease;
}

.feature-list-item:hover .feature-list-number,
.feature-list-item:hover .feature-list-title {
    color: var(--color-text-secondary);
}

.feature-list-item.is-active .feature-list-number {
    color: var(--color-accent);
}

.feature-list-item.is-active .feature-list-title {
    color: var(--color-ink);
}

/* Sliding underline indicator — hidden until JS positions it */
.features-tab-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
    transition: left 300ms var(--ease-out-expo), width 300ms var(--ease-out-expo), opacity var(--duration-fast) ease;
    box-shadow: 0 1px 4px rgba(var(--color-accent-rgb), 0.15);
    pointer-events: none;
    will-change: left, width;
    opacity: 0;
}

.features-interactive .features-tab-indicator {
    opacity: 1;
}

/* --- Dark viewport showcase --- */
.feature-showcase {
    position: relative;
    background: var(--color-dark-surface);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-prominent);
    padding: var(--space-3);
    padding-bottom: var(--space-10);
    overflow: hidden;
}

/* Inner glow (borrowed from hero terminal) */
.feature-showcase::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
    pointer-events: none;
    z-index: 2;
}

/* Ambient glow (borrowed from hero terminal) */
.feature-showcase::after {
    content: '';
    position: absolute;
    inset: -40px;
    z-index: -1;
    background: radial-gradient(ellipse at center, rgba(var(--color-accent-rgb), 0.08), transparent 70%);
    pointer-events: none;
    border-radius: 50%;
    transition: inset 600ms var(--ease-pando);
}

.feature-showcase:hover::after {
    inset: -50px;
}

/* --- Feature callout (panel) --- */
.feature-callout {
    position: relative;
    margin-bottom: var(--space-4);
}

/* --- Dark blueprint grid media --- */
.feature-media {
    width: 100%;
    min-height: 340px;
    background:
        radial-gradient(circle at 30% 40%, rgba(27, 107, 58, 0.08), transparent 50%),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 31px,
            rgba(27, 107, 58, 0.04) 31px,
            rgba(27, 107, 58, 0.04) 32px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 31px,
            rgba(27, 107, 58, 0.04) 31px,
            rgba(27, 107, 58, 0.04) 32px
        ),
        var(--color-dark-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: rgba(27, 107, 58, 0.4);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    letter-spacing: var(--tracking-display);
    position: relative;
    overflow: hidden;
}

/* Corner bracket — top-left */
.feature-media::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    height: 24px;
    border-right: 1px solid rgba(27, 107, 58, 0.25);
    border-bottom: 1px solid rgba(27, 107, 58, 0.25);
    pointer-events: none;
}

/* Corner bracket — bottom-right */
.feature-media::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    border-left: 1px solid rgba(27, 107, 58, 0.25);
    border-top: 1px solid rgba(27, 107, 58, 0.25);
    pointer-events: none;
}

/* --- Schematic terminal placeholders --- */
.feature-media-schematic {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    width: 100%;
    height: 100%;
    padding: var(--space-6) var(--space-8);
    position: relative;
}

.schematic-terminal {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    width: 100%;
    max-width: 520px;
    overflow-x: auto;
    scrollbar-width: none;
}

.schematic-terminal::-webkit-scrollbar { display: none; }

.schematic-line {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    letter-spacing: var(--tracking-narrow);
    line-height: var(--line-height-relaxed);
    color: rgba(255, 255, 255, 0.55);
    white-space: pre;
}

.sch-kw {
    color: rgba(90, 160, 110, 0.95);
    font-weight: var(--font-weight-medium);
}

.sch-str {
    color: rgba(255, 255, 255, 0.8);
}

.sch-op {
    color: rgba(255, 255, 255, 0.45);
}

.sch-ok {
    color: rgba(90, 180, 110, 0.85);
}

.sch-err {
    color: rgba(220, 110, 110, 0.9);
}

.sch-dim {
    color: rgba(255, 255, 255, 0.4);
}

.sch-caret {
    color: rgba(27, 107, 58, 0.6);
    animation: blink 1.2s infinite;
}

/* --- Frosted glass caption bar --- */
.feature-caption {
    position: absolute;
    bottom: var(--space-3);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - var(--space-8));
    max-width: 1040px;
    display: grid;
    grid-template-columns: 160px 1fr 1fr;
    align-items: center;
    gap: var(--space-3);
    background: color-mix(in srgb, var(--color-dark-surface) 82%, transparent);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.2);
    padding: var(--space-3);
    z-index: 3;
}

.feature-caption-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-0-5);
}

.feature-caption .bento-title {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 0;
    line-height: var(--line-height-tight);
}

.feature-caption-kicker {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: var(--tracking-wide);
    color: rgba(var(--color-accent-rgb), 0.7);
}

.feature-caption .feature-lead {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.65);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    margin-bottom: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.06);
    padding-left: var(--space-3);
}

.feature-caption .feature-body {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.55);
    line-height: var(--line-height-normal);
    border-left: 1px solid rgba(255, 255, 255, 0.06);
    padding-left: var(--space-3);
}

/* --- No-JS fallback: stack all panels, caption below media --- */
[data-features]:not(.features-interactive) .feature-caption {
    position: static;
    transform: none;
    width: 100%;
    max-width: none;
    margin-top: var(--space-2);
    background: color-mix(in srgb, var(--color-dark-surface) 60%, transparent);
}

/* --- Interactive mode: toggle panels with crossfade --- */
.features-interactive .feature-callout {
    margin-bottom: 0;
    animation: featureFadeIn var(--duration-slow) var(--ease-pando);
}

.features-interactive .feature-callout:not(.is-active) {
    display: none;
}

.features-interactive .feature-callout.is-active {
    display: block;
}

@keyframes featureFadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .features-tab-indicator {
        transition: none;
    }

    .features-interactive .feature-callout {
        display: block;
        animation: none;
    }
}

/* ============================================================================
   COMPARISON TABLE SECTION (AUDIT LOG)
   ============================================================================ */
#comparison {
    padding: var(--space-12) 0 var(--space-12);
    background: transparent;
}

#comparison .section-kicker,
#comparison h2 {
    text-align: center;
    margin-bottom: var(--space-3);
}

#comparison .section-kicker {
    margin-bottom: var(--space-1-5);
}

.comparison-log-container {
    background: var(--surface-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-lift);
}

.log-header {
    background: var(--surface-tint);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-1-5) var(--space-3);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

.brand-case {
    text-transform: none;
    letter-spacing: normal;
}


.log-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    padding: var(--space-1-5) var(--space-3);
    border-bottom: 1px solid var(--color-border-subtle);
    align-items: center;
    transition: background var(--duration-fast) ease;
}

.log-row:last-child {
    border-bottom: none;
}

.log-task {
    color: var(--color-ink);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

.log-row-accent {
    background: var(--surface-accent-tint);
}

.log-label {
    display: inline-block;
    font-weight: var(--font-weight-semibold);
}

.log-label-accent {
    color: var(--color-accent);
}

.log-label-muted {
    color: var(--color-text-tertiary);
}

.log-col-muted {
    color: var(--color-text-tertiary);
    text-align: left;
}

.log-col-accent {
    text-align: left;
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
}

.comparison-log-spaced {
    margin-top: var(--space-6);
    max-width: 1080px;
    margin-left: auto;
    margin-right: auto;
}

.log-status-fail {
    color: var(--color-error);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.log-status-success {
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background: var(--color-accent-subtle);
    padding: var(--space-0-5) var(--space-1);
    border-radius: var(--radius-sm);
    width: fit-content;
}

.log-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--space-0-5);
}

/* 5-column operation complexity grid */
#comparison .log-header,
#comparison .log-row {
    grid-template-columns: 2.2fr 0.8fr 0.8fr 1fr 1fr;
}

/* Visual separator between LLM columns and Engine column */
#comparison .log-row [role="cell"]:nth-child(5) {
    border-left: 1px solid var(--color-border-subtle);
    padding-left: var(--space-2);
}

#comparison .log-header [role="columnheader"]:nth-child(5) {
    border-left: 1px solid var(--color-border-subtle);
    padding-left: var(--space-2);
}

#comparison .log-row:hover {
    background: var(--surface-accent-tint);
}

/* Highlight accent rows (rename, delete) */
#comparison .log-row-accent {
    background: var(--surface-accent-tint);
    border-left: 2px solid var(--color-accent);
    margin-left: -1px;
}

#comparison .log-row-accent .log-task {
    color: var(--color-accent);
}

/* Comparison section intro text */
.comparison-intro {
    text-align: center;
    font-family: var(--font-sans);
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 900px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

/* Key insight callout */
.key-insight {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    max-width: 900px;
    margin: var(--space-5) auto 0;
    text-align: left;
    line-height: var(--line-height-relaxed);
    padding: var(--space-3) var(--space-4);
    background: var(--surface-accent-tint);
    border: none;
    border-left: 2px solid var(--color-accent);
    border-radius: var(--radius-sm);
}

.key-insight strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--space-0-5);
}

/* ============================================================================
   SECTION HELPERS
   ============================================================================ */
.section-head {
    text-align: center;
    margin-bottom: var(--space-8);
}

.section-head-left {
    text-align: left;
    margin-bottom: var(--space-6);
}

.section-kicker {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--font-size-ui-nav);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--tracking-caps);
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-3);
}

/* Inherit text-align from parent (.section-head or .section-head-left) */

.subpage-meta {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    letter-spacing: var(--tracking-wide);
    line-height: var(--line-height-relaxed);
    max-width: 900px;
    margin: 0 auto;
}

.section-actions {
    text-align: center;
    margin-top: var(--space-6);
}

.icon-inline {
    margin-left: var(--space-1);
    transition: transform var(--duration-fast) ease;
}

.btn:hover .icon-inline {
    transform: translateY(2px);
}

.btn-block {
    width: 100%;
    margin-top: var(--space-2);
}

/* CTA button group */
.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
    align-items: stretch;
}

/* Final CTA buttons use .btn-large for consistent sizing */

/* --- METHOD CARDS --- */
.method-grid {
    margin-top: var(--space-6);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
}

.method-card {
    padding: var(--space-4);
    border-radius: 0;
    background: transparent;
    border-top: 1px solid var(--color-border-section);
}

.method-card-recommended {
    border-top: 2px solid var(--color-accent);
}

.method-card-legacy {
    border-top: 1px solid var(--color-border-section);
}

.method-kicker {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
    letter-spacing: var(--tracking-display);
    text-transform: uppercase;
}

.method-kicker-recommended {
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.method-title {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2.5vw, 1.75rem);
    line-height: var(--line-height-tight);
    color: var(--color-text-secondary);
}

.method-title-accent {
    color: var(--color-accent);
}

.method-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
}

.method-subtitle-muted {
    color: var(--color-text-tertiary);
}

.method-list {
    list-style: none;
    padding: 0;
    font-size: var(--font-size-ui-sub);
    line-height: var(--line-height-normal);
}

.method-list li {
    margin-bottom: var(--space-1-5);
}

.method-list-muted {
    color: var(--color-text-secondary);
}

/* --- PRINCIPLES --- */
.principles {
    text-align: center;
}

.principles-band {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-6);
    text-align: left;
    border-top: 1px solid var(--color-border-section);
    border-bottom: 1px solid var(--color-border-section);
    padding: var(--space-4) 0;
}

.principle-item {
    padding: 0 var(--space-2);
    border-left: 1px solid var(--color-border-subtle);
}

.principle-item:first-child {
    border-left: none;
    padding-left: 0;
}

.principle-icon {
    color: var(--color-accent);
    margin-bottom: var(--space-2);
}

.principle-item h3 {
    font-size: var(--font-size-2xl);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-1);
    font-weight: var(--font-weight-normal);
    color: var(--color-ink);
}

.principle-desc {
    font-size: var(--font-size-ui-sub);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}


/* ============================================================================
   PRICING SECTION
   ============================================================================ */
#pricing {
    padding: var(--space-12) 0 var(--space-8);
    border-top: 1px solid var(--color-border-subtle);
}

.pricing-variant .section-kicker,
.pricing-variant h2 {
    text-align: center;
    margin-bottom: var(--space-2);
}

.pricing-variant .section-kicker {
    margin-bottom: var(--space-1-5);
}

.pricing-subhead {
    text-align: center;
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-6);
    line-height: var(--line-height-relaxed);
}

.data-mono {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    background: var(--color-paper-dim);
    padding: var(--space-0-25) var(--space-0-5);
    border-radius: var(--radius-sm);
}

/* Trust Strip */
.trust-strip {
    display: flex;
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
    gap: var(--space-2);
    max-width: 1040px;
    margin: 0 auto var(--space-5);
    padding: 0;
    border: none;
}

.trust-divider {
    display: none;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-1-5);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-2) var(--space-3);
    background: var(--surface-glass);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    flex: 1 1 0;
    min-width: 220px;
}

.trust-icon {
    color: var(--color-accent);
    flex-shrink: 0;
}

.trust-item strong {
    color: var(--color-ink);
    font-weight: var(--font-weight-medium);
}

.trust-detail {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* Pricing Summary Table */
.pricing-summary {
    max-width: 740px;
    margin: 0 auto var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--surface-glass);
    box-shadow: var(--shadow-lift);
}

.pricing-summary-header {
    display: grid;
    grid-template-columns: 2fr 1fr;
    padding: var(--space-1-5) var(--space-3);
    background: var(--surface-tint);
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

.pricing-summary-header span:last-child {
    text-align: right;
}

.pricing-summary-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    padding: var(--space-3) var(--space-3);
    border-bottom: 1px solid var(--color-border-subtle);
    font-size: var(--font-size-sm);
    align-items: center;
}

.pricing-summary-row:last-child {
    border-bottom: none;
}

.pricing-summary-row {
    transition: background var(--duration-fast) ease;
}

.pricing-summary-row:hover {
    background: rgba(var(--color-accent-rgb), 0.03);
}

.pricing-summary-row-accent {
    background: var(--surface-accent-tint);
}

.pricing-summary-row-accent:hover {
    background: rgba(var(--color-accent-rgb), 0.07);
}

.pricing-summary-what {
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
}

.pricing-summary-what strong {
    color: var(--color-ink);
    font-size: var(--font-size-md);
}

.pricing-summary-desc {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--space-0-5);
    line-height: var(--line-height-normal);
}

.pricing-summary-pay {
    font-family: var(--font-mono);
    color: var(--color-ink);
    text-align: right;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-lg);
}

.pricing-summary-free {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

.pricing-summary-note {
    font-weight: var(--font-weight-normal);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
}

.pricing-summary-upcoming {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
}

.pricing-summary-badge-soon {
    display: inline-block;
    margin-left: var(--space-1);
    padding: 1px var(--space-1);
    background: var(--surface-accent-tint);
    border: 1px solid var(--color-accent-border);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: var(--font-size-badge);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    vertical-align: middle;
    line-height: var(--line-height-snug);
}


/* ============================================================================
   FAQ ACCORDION
   ============================================================================ */
.faq-section {
    padding: var(--space-10) 0 var(--space-8);
}

.faq-section .section-head {
    margin-bottom: var(--space-5);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-accordion {
    border-bottom: 1px solid var(--color-border-subtle);
}

.faq-accordion:first-child {
    border-top: 1px solid var(--color-border-subtle);
}

.faq-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2-5) 0;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-snug);
    transition: color var(--duration-fast) ease;
}

.faq-trigger:hover {
    color: var(--color-ink);
}

.faq-accordion[data-open="true"] .faq-trigger {
    color: var(--color-ink);
}

.faq-trigger:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.faq-trigger-number {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    flex-shrink: 0;
    min-width: 1.5em;
}

.faq-chevron {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    margin-left: auto;
    color: var(--color-text-tertiary);
    transition: transform 0.25s var(--ease-pando);
    opacity: 0.5;
}

.faq-accordion[data-open="true"] .faq-chevron {
    transform: rotate(180deg);
    opacity: 0.8;
}

.faq-panel {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s var(--ease-pando);
}

.faq-accordion[data-open="true"] .faq-panel {
    max-height: 500px;
}

.faq-panel-inner {
    padding: 0 0 var(--space-3) calc(1.5em + var(--space-2));
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.faq-panel-inner a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--color-accent-border);
    transition: color var(--duration-fast) ease, text-decoration-color var(--duration-fast) ease;
}

.faq-panel-inner a:hover {
    color: var(--color-ink);
    text-decoration-color: var(--color-ink);
}


@media (prefers-reduced-motion: reduce) {
    .faq-panel {
        transition: none;
    }

    .faq-chevron {
        transition: none;
    }
}


/* ============================================================================
   PRICING: Expandable Tier Rows
   ============================================================================ */
.pricing-summary-row-expandable {
    cursor: pointer;
    user-select: none;
}

.pricing-summary-row-expandable:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
}

.pricing-summary-row-expandable[aria-expanded="true"] {
    border-bottom-color: transparent;
}

.pricing-row-chevron {
    display: inline-block;
    width: 14px;
    height: 14px;
    vertical-align: middle;
    margin-left: var(--space-1);
    color: var(--color-text-tertiary);
    transition: transform 0.25s var(--ease-pando);
    opacity: 0.5;
}

.pricing-summary-row-expandable:hover .pricing-row-chevron {
    opacity: 0.8;
}

.pricing-summary-row-expandable[aria-expanded="true"] .pricing-row-chevron {
    transform: rotate(180deg);
    opacity: 0.8;
}

.tier-detail-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease-pando);
    border-bottom: 1px solid var(--color-border-subtle);
}

.tier-detail-panel[data-open="true"] {
    max-height: 800px;
}

.tier-detail-inner {
    padding: var(--space-2) var(--space-3) var(--space-4);
    border-top: 1px dashed var(--color-border-subtle);
}

.tier-detail-inner > p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
    max-width: 520px;
    margin-bottom: var(--space-3);
}

.tier-detail-inner .product-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-3);
    columns: 1;
}

.tier-detail-inner .product-features li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-1) 0;
    display: flex;
    align-items: baseline;
    gap: var(--space-1);
    line-height: var(--line-height-normal);
}

.tier-detail-inner .product-features .pf-check {
    color: var(--color-accent);
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.tier-detail-inner .product-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1-5);
    align-items: stretch;
}

@media (prefers-reduced-motion: reduce) {
    .tier-detail-panel {
        transition: none;
    }

    .pricing-row-chevron {
        transition: none;
    }
}

/* ============================================================================
   PRICING: Enterprise Contact
   ============================================================================ */
.pricing-enterprise {
    text-align: center;
    margin-top: var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    letter-spacing: var(--tracking-wide);
}

.pricing-enterprise a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--color-accent-border);
    transition: color var(--duration-fast) ease;
}

.pricing-enterprise a:hover {
    color: var(--color-ink);
}


/* ============================================================================
   FINAL CTA
   ============================================================================ */
.final-cta-section {
    padding: var(--space-10) 0 var(--space-12);
    background: var(--color-ink);
    color: var(--color-paper);
}

.final-cta {
    text-align: center;
}

.final-cta-text {
    margin-bottom: var(--space-4);
}

.cta-console {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--color-dark-surface-light);
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lift), var(--shadow-glow-accent);
    position: relative;
    overflow: hidden;
    max-width: 760px;
    margin: 0 auto;
}

.cta-console .final-cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4.5vw, 2.75rem);
    letter-spacing: var(--tracking-narrow);
    margin-bottom: var(--space-3);
    line-height: var(--line-height-tight);
    color: var(--color-paper-static);
    max-width: var(--content-measure);
    margin-left: auto;
    margin-right: auto;
}

.cta-console .final-cta-text {
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    color: rgba(var(--color-paper-static-rgb), 0.6);
    line-height: var(--line-height-normal);
    max-width: none;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

/* Secondary text link in CTA */
.cta-link-secondary {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: rgba(var(--color-paper-static-rgb), 0.5);
    text-decoration: none;
    transition: color var(--duration-fast) ease;
}

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

/* Supported languages trust signal */
.cta-languages {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: rgba(var(--color-paper-static-rgb), 0.45);
    margin-top: var(--space-4);
    margin-bottom: var(--space-0-5);
    letter-spacing: var(--tracking-narrow);
}

.cta-languages a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid currentColor;
    transition: opacity 0.15s ease;
}

.cta-languages a:hover {
    opacity: 0.7;
}

.cta-languages-soon {
    font-family: var(--font-sans);
    font-size: var(--font-size-xs);
    font-style: italic;
    color: rgba(var(--color-paper-static-rgb), 0.25);
}

/* Language strip between problem pivot and "What is pando" */
.lang-strip {
    text-align: center;
    padding: var(--space-3) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--bg-secondary);
    position: relative;
    z-index: 2;
}

.lang-strip-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.lang-strip-label {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    font-weight: var(--font-weight-semibold);
}

.lang-strip-list {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-ink);
    letter-spacing: var(--tracking-narrow);
}

.lang-strip-soon {
    font-family: var(--font-sans);
    font-size: var(--font-size-xs);
    font-style: italic;
    color: var(--color-text-secondary);
}

/* Dark-surface primary button override — use static (always-light) values
   so these don't invert in dark mode (they sit on a permanently dark surface) */
.cta-console .btn-primary {
    background: var(--color-paper-static);
    color: var(--color-ink-static);
    border-color: var(--color-paper-static);
}

.cta-console .btn-primary:hover {
    background: var(--color-accent);
    color: var(--color-paper-static);
    border-color: var(--color-accent);
}

.cta-console .btn-primary:active {
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.18);
    transform: translateY(1px);
    filter: brightness(0.97);
}

.js .feature-showcase,
.js .comparison-log-container {
    opacity: 0;
    transform: translateY(30px);
}

/* CTA entrance animation */
.js .cta-console {
    opacity: 0;
    transform: translateY(24px);
    will-change: opacity, transform;
    transition: opacity 0.7s var(--ease-pando), transform 0.7s var(--ease-pando);
}

.js .cta-console.is-visible {
    opacity: 1;
    transform: translateY(0);
    will-change: auto;
}

/* Staggered child reveals */
.js .cta-console .final-cta-title,
.js .cta-console .final-cta-text,
.js .cta-console .cta-install-command,
.js .cta-console .cta-buttons,
.js .cta-console .cta-languages,
.js .cta-console .cta-languages-soon {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s var(--ease-pando), transform 0.5s var(--ease-pando);
}

.js .cta-console.is-visible .final-cta-title {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.1s;
}

.js .cta-console.is-visible .final-cta-text {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.2s;
}

.js .cta-console.is-visible .cta-install-command {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.3s;
}

.js .cta-console.is-visible .cta-buttons {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.4s;
}

.js .cta-console.is-visible .cta-languages,
.js .cta-console.is-visible .cta-languages-soon {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.5s;
}

/* Reduced motion: skip all CTA animations */
@media (prefers-reduced-motion: reduce) {
    .js .cta-console,
    .js .cta-console .final-cta-title,
    .js .cta-console .final-cta-text,
    .js .cta-console .cta-install-command,
    .js .cta-console .cta-buttons,
    .js .cta-console .cta-languages,
.js .cta-console .cta-languages-soon {
        opacity: 1;
        transform: none;
        transition: none;
    }
}


/* ============================================================================
   FOOTER
   ============================================================================ */
#main-footer {
    padding: var(--space-3) 0;
    border-top: none;
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    letter-spacing: normal;
}

.footer-divider {
    color: var(--color-border);
    margin: 0 var(--space-0-5);
}

.footer-note {
    margin-top: var(--space-2);
    display: block;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-0-5);
    flex-wrap: wrap;
}

.footer-brand,
.footer-links a {
    font-family: var(--font-mono);
    font-size: var(--font-size-2xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

.footer-brand-name {
    text-transform: none;
}

.footer-brand a {
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) ease;
}

.footer-brand a:hover {
    color: var(--color-accent);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.footer-links a {
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    text-decoration-color: rgba(var(--color-border-base-rgb, 10, 10, 10), 0.2);
    transition: color var(--duration-fast) ease, text-decoration-color var(--duration-fast) ease;
}

.footer-links a:hover {
    color: var(--color-accent);
    text-decoration-color: var(--color-accent);
}

/* Low-6: focus-visible on footer links */
.footer-links a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    color: var(--color-accent);
    text-decoration-color: var(--color-accent);
}

.footer-brand a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}


/* ============================================================================
   SHARED SUBPAGE COMPONENTS
   ============================================================================ */

/* Subpage body — shared by pricing, docs, legal pages */
.subpage-body {
    padding-top: var(--header-height);
}

.subpage-body section {
    border-bottom: none;
}

/* Subpage hero — shared gradient background with centered heading */
.subpage-body .subpage-hero {
    padding: var(--space-8) 0 var(--space-6);
    text-align: center;
    border-bottom: none;
    position: relative;
}

.subpage-body .subpage-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 78%, rgba(var(--color-accent-rgb), 0.12) 0%, transparent 55%),
        radial-gradient(circle at 82% 18%, rgba(var(--color-accent-rgb), 0.08) 0%, transparent 48%);
    pointer-events: none;
    z-index: 0;
}

.subpage-body .subpage-hero .container { position: relative; z-index: 1; }
.subpage-body .subpage-hero h1 { margin-bottom: var(--space-3); font-size: clamp(3rem, 5.5vw, 4.5rem); }

/* Section bridge dividers — used on docs, legal, and other subpages */
.section-bridge {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    letter-spacing: var(--tracking-spread);
    text-transform: uppercase;
    text-align: center;
    margin: var(--space-8) 0 var(--space-2);
    padding: var(--space-2) 0;
    border-top: 1px solid var(--color-border-subtle);
}

/* Contact/CTA box — used on docs and legal pages */
.legal-cta-box {
    max-width: 740px;
    margin: var(--space-8) auto 0;
    background: var(--surface-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    text-align: center;
    box-shadow: var(--shadow-lift);
}

.legal-cta-box h2,
.legal-content .legal-cta-box h2 {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    color: var(--color-ink);
    text-align: center;
    margin-top: 0;
    margin-bottom: var(--space-1);
}

.legal-cta-box p,
.legal-content .legal-cta-box p {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    letter-spacing: var(--tracking-wide);
    text-align: center;
    margin-bottom: var(--space-4);
}

.legal-cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    gap: var(--space-2);
}

.legal-cta-link {
    display: inline-block;
    margin-top: var(--space-3);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--duration-fast) ease;
}

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

@media (max-width: 480px) {
    .legal-cta-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .legal-cta-actions .btn,
    .product-cta .btn,
    .cta-actions .btn,
    .hero-actions .btn,
    .cta-buttons .btn,
    .legal-cta-actions .install-command-cta,
    .product-cta .install-command-cta,
    .cta-actions .install-command-cta,
    .hero-actions .install-command-cta,
    .cta-buttons .install-command-cta {
        width: 100%;
        max-width: none;
    }

    .install-command-cta {
        min-width: 0;
        padding-inline: 0.3rem;
    }

    .install-command-text {
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: var(--font-size-sm);
        padding-right: 0.4rem;
    }

    .install-command-label {
        padding-inline: 0.42rem;
    }
}

/* ============================================================================
   UTILITIES
   ============================================================================ */
.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: fixed;
    top: var(--space-2);
    left: var(--space-2);
    z-index: 1000;
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-sm);
    background: var(--color-dark-surface);
    color: rgba(255, 255, 255, 0.96);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    text-decoration: none;
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 160ms ease, opacity 160ms ease;
}

.skip-link:focus,
.skip-link:focus-visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.noscript-banner {
    text-align: center;
    padding: var(--space-1-5);
    background: var(--color-paper-dim);
    font-size: var(--font-size-sm);
}

.js .auth-aware { opacity: 0; transition: opacity 0.2s; }
.js .auth-aware.auth-ready { opacity: 1; }

/* Medium-14: Auth-aware timeout fallback */
.js .auth-aware.auth-timeout { opacity: 1; }

/* Medium-11: Scroll animation FOUC fix */
.js [data-animate] {
    opacity: 0;
    transform: translateY(30px);
}

.js [data-animate].is-animated {
    animation: network-reveal 0.8s var(--ease-pando) forwards;
}

/* --- NO-JS FALLBACK --- */
.no-js .auth-aware { opacity: 1; }
.no-js .cta-console,
.no-js .cta-console .final-cta-title,
.no-js .cta-console .final-cta-text,
.no-js .cta-console .cta-buttons,
.no-js .cta-console .cta-languages,
.no-js .cta-console .cta-languages-soon { opacity: 1; transform: none; }

/* --- SKIP LINK (legacy fallback for links without .skip-link) --- */
a[href="#main"]:not(.skip-link) {
    position: absolute;
    top: -100px;
    left: var(--space-2);
    z-index: 200;
    padding: var(--space-1-5) var(--space-3);
    background: var(--color-ink);
    color: var(--color-paper);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-base);
    text-decoration: none;
    transition: top 0.2s ease;
}

a[href="#main"]:not(.skip-link):focus,
a[href="#main"]:not(.skip-link):focus-visible {
    top: var(--space-2);
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}


/* ============================================================================
   MOBILE NAVIGATION
   ============================================================================ */
/* Nav toggle button (hamburger) - hidden by default on desktop */
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 110;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-0-5);
}

.nav-toggle span:not(.sr-only) {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--color-ink);
    border-radius: 1px;
    transition: all 0.3s var(--ease-pando);
    transform-origin: center;
}

/* Hamburger animation to X */
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    transform: rotate(45deg) translateY(7px);
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    opacity: 0;
    transform: scaleX(0);
}

.nav-toggle[aria-expanded="true"] span:nth-child(4) {
    transform: rotate(-45deg) translateY(-7px);
}

/* Nav backdrop overlay */
.nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(var(--color-shadow-base-rgb), 0.4);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.nav-open .nav-backdrop {
    opacity: 1;
    visibility: visible;
}

/* Prevent body scroll when nav is open */
body.nav-open {
    overflow: hidden;
}

/* Active nav link highlighting */
#main-nav a.is-active {
    color: var(--color-accent);
    background: var(--color-accent-subtle);
}


/* ============================================================================
   RESPONSIVE
   ============================================================================ */

/* Small screens (phones in portrait) */
@media (max-width: 480px) {
    h1 {
        font-size: clamp(2.6rem, 11vw, 3.4rem);
    }

    h2 {
        font-size: clamp(1.8rem, 7vw, 2.4rem);
        font-weight: var(--font-weight-normal);
    }

    .container {
        padding: 0 var(--space-2);
    }

    #hero {
        padding-top: calc(var(--header-height) + var(--space-6));
        padding-bottom: var(--space-6);
    }



    .cta-console {
        padding: var(--space-5) var(--space-3);
    }

    /* Features: number-only circle indicators */
    .features-list {
        gap: var(--space-2);
    }

    .feature-list-title {
        display: none;
    }

    .feature-list-button {
        width: 32px;
        height: 32px;
        justify-content: center;
        padding: 0;
        border: 1px solid var(--color-border-subtle);
        border-radius: 50%;
    }

    .feature-list-item.is-active .feature-list-button {
        border-color: var(--color-accent-border);
        background: var(--surface-accent-tint);
    }

    .features-tab-indicator {
        display: none;
    }

    .feature-showcase {
        padding: var(--space-1-5);
    }

    .feature-caption {
        position: static;
        transform: none;
        width: 100%;
        max-width: none;
        grid-template-columns: 1fr;
        gap: var(--space-1);
        padding: var(--space-1-5);
        background: color-mix(in srgb, var(--color-dark-surface) 60%, transparent);
        margin-top: var(--space-1-5);
    }

    .feature-caption .feature-lead,
    .feature-caption .feature-body {
        border-left: none;
        padding-left: 0;
        font-size: var(--font-size-xs);
    }

    .feature-caption .bento-title {
        font-size: var(--font-size-lg);
    }

    .feature-media-schematic {
        padding: var(--space-3) var(--space-3);
    }

    .schematic-line {
        font-size: var(--font-size-badge);
    }

}

/* Intermediate responsive breakpoint (~1024px) */
@media (max-width: 1024px) {
    #hero .container {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .hero-editorial {
        max-width: 700px;
    }

    .hero-description {
        margin-bottom: var(--space-3);
    }

    .hero-visual {
        max-width: 860px;
        margin: 0;
    }

    .cta-console .final-cta-text {
        width: auto;
        max-width: var(--content-measure);
        white-space: normal;
    }

    /* Features: shrink tab text */
    .features-list {
        gap: var(--space-3);
    }

    .feature-list-title {
        font-size: var(--font-size-md);
    }

    .feature-caption {
        grid-template-columns: 140px 1fr;
    }

    .feature-caption .feature-body {
        grid-column: 1 / -1;
        border-left: none;
        padding-left: 0;
        padding-top: var(--space-1);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
}

@media (max-width: 900px) {
    /* Comparison table: horizontal scroll on smaller screens */
    #comparison .comparison-log-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    #comparison .log-header,
    #comparison .log-row {
        min-width: 640px;
    }

    /* Scroll hint for the comparison table */
    .comparison-scroll-hint {
        display: block;
        text-align: center;
        font-family: var(--font-mono);
        font-size: var(--font-size-xs);
        color: var(--color-text-tertiary);
        margin-top: var(--space-1);
        letter-spacing: var(--tracking-wide);
    }

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

    .principles-band {
        grid-template-columns: 1fr;
        border-bottom: none;
        padding: var(--space-3) 0;
    }

    .principle-item {
        border-left: none;
        border-top: 1px solid var(--color-border-subtle);
        padding: var(--space-2) 0;
    }

    .principle-item:first-child {
        border-top: none;
    }
}

/* Default: scroll hint hidden (shown in <=900px media query) */
.comparison-scroll-hint {
    display: none;
}

@media (max-width: 768px) {
    /* Features: compact tabs, caption below media */
    .features-list {
        gap: var(--space-2);
    }

    .feature-list-title {
        font-size: var(--font-size-sm);
    }

    .feature-showcase {
        padding: var(--space-2);
        padding-bottom: var(--space-2);
    }

    .feature-media-schematic {
        padding: var(--space-4) var(--space-4);
    }

    .schematic-line {
        font-size: var(--font-size-xs);
    }

    .feature-caption {
        position: static;
        transform: none;
        width: 100%;
        max-width: none;
        grid-template-columns: 1fr;
        gap: var(--space-1);
        margin-top: var(--space-2);
        background: color-mix(in srgb, var(--color-dark-surface) 60%, transparent);
    }

    .feature-caption .feature-lead,
    .feature-caption .feature-body {
        border-left: none;
        padding-left: 0;
    }

    #main-header .container {
        padding: 0 var(--space-2);
    }

    /* Show hamburger toggle */
    .nav-toggle {
        display: flex;
    }

    /* Mobile navigation drawer */
    #main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: var(--mobile-nav-width);
        max-width: calc(100vw - 60px);
        height: 100vh;
        height: 100dvh;
        background: var(--color-paper);
        border-left: 1px solid var(--color-border);
        box-shadow: var(--shadow-drawer);
        z-index: 100;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: calc(var(--header-height) + var(--space-3)) var(--space-3) var(--space-3);
        transform: translateX(100%);
        transition: transform 0.3s var(--ease-pando);
        overflow-y: auto;
    }

    .js #main-nav {
        visibility: hidden;
    }

    .no-js #main-nav {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background: transparent;
        border-left: none;
        box-shadow: none;
        padding: 0;
        transform: none;
        visibility: visible;
    }

    #main-nav.is-open {
        display: flex;
        transform: translateX(0);
        visibility: visible;
    }

    #main-nav.nav-inline-mobile,
    .js #main-nav.nav-inline-mobile,
    .no-js #main-nav.nav-inline-mobile {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background: transparent;
        border-left: none;
        box-shadow: none;
        padding: 0;
        transform: none;
        visibility: visible;
        overflow: visible;
    }

    #main-nav.nav-inline-mobile a {
        border-bottom: none;
        padding: 0;
    }

    #main-nav a {
        padding: var(--space-2) var(--space-1-5);
        font-size: var(--font-size-sm);
        border-bottom: 1px solid var(--color-border-subtle);
        border-radius: 0;
    }

    #main-nav a:last-child {
        border-bottom: none;
    }

    #main-nav a:hover,
    #main-nav a:focus {
        background: var(--color-accent-subtle);
    }

    #nav-auth {
        display: none;
    }

    .header-theme-toggle {
        display: none;
    }

    .nav-theme-toggle {
        display: flex !important;
        align-self: center;
        margin-top: var(--space-2);
        padding: var(--space-1-5);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-base);
        width: 100%;
        justify-content: center;
        gap: var(--space-1);
    }

    .nav-auth-mobile {
        display: flex !important;
        width: 100%;
        justify-content: center;
        margin-top: var(--space-2);
    }

    /* Keep header above nav drawer */
    #main-header.nav-open {
        z-index: 105;
    }

    /* Comparison table: keep horizontal scroll on mobile */
    #comparison .comparison-log-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    #comparison .log-header,
    #comparison .log-row {
        min-width: 640px;
    }


    .trust-strip {
        flex-direction: column;
        gap: var(--space-1-5);
        margin-bottom: var(--space-4);
    }

    .trust-item {
        min-width: 0;
        width: 100%;
    }

    .pricing-summary {
        margin-left: 0;
        margin-right: 0;
        max-width: none;
    }

    .pricing-summary-header,
    .pricing-summary-row {
        grid-template-columns: 1.8fr 1fr;
        padding: var(--space-2);
        font-size: var(--font-size-sm);
    }

    .tier-detail-inner {
        padding: var(--space-1) var(--space-2) var(--space-3);
    }

    .pricing-summary-badge-soon {
        display: block;
        margin-left: 0;
        margin-top: var(--space-0-5);
        width: fit-content;
    }

    #hero .container {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }

    .hero-editorial {
        max-width: none;
    }

    .hero-visual {
        max-width: none;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .cta-link-secondary {
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }

    .footer-brand {
        justify-content: center;
    }

    .footer-links {
        justify-content: center;
        gap: var(--space-2);
    }

    /* Reduce spacing on mobile */
    /* Features tabs are inside #why — no separate section padding needed */

    #comparison {
        padding: var(--space-8) 0;
    }

    #pricing {
        padding: var(--space-8) 0 var(--space-6);
    }

    .final-cta-section {
        padding: var(--space-6) 0 var(--space-8);
    }
}