:root {
    --primary: #f37021;
    --dark: #1a1a1a;
    --dark-soft: rgba(26, 26, 26, 0.78);
    --light: #ffffff;
    --light-gray: #f4f4f4;
    --text: #333333;
    --border-soft: rgba(255, 255, 255, 0.1);
    --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.16);
    --shadow-strong: 0 30px 80px rgba(0, 0, 0, 0.35);

    /* Main layout dials */
    --header-height: 80px;
    --section-pad-y: 96px;
    --hero-pad-x: 32px;
    --hero-pad-top: 32px;
    --hero-pad-bottom: 72px;
    --hero-stack-gap: 18px;
    --hero-logo-width: 220px;
    --hero-title-max: 820px;
    --hero-title-size: clamp(2.8rem, 7vw, 4.8rem);
    --hero-card-width: min(1200px, 100%);

    /* Buttons and audio */
    --cta-gap: 12px;
    --audio-row-gap: 10px;
    --audio-pill-gap: 10px;
    --audio-pill-pad-y: 10px;
    --audio-pill-pad-x: 10px;
    --audio-pill-radius: 999px;
    --audio-pill-bg: rgba(26, 26, 26, 0.78);
    --audio-pill-border: 1px solid rgba(255, 255, 255, 0.12);
    --audio-button-size: 46px;
    --audio-icon-size: 20px;

    /* Mobile dials */
    --mobile-snap-padding-top: 88px;
    --mobile-roi-card-min-height: 68svh;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: auto;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background: var(--light);
    overflow-x: hidden;
}

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

.container {
    width: min(1120px, calc(100vw - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    background: rgba(26, 26, 26, 0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: var(--header-height);
}

.site-logo img {
    width: auto;
    height: 32px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-links a {
    display: inline-block;
    padding: 0.5rem 0.85rem;
    color: var(--light);
    text-decoration: none;
    border-bottom: 2px solid transparent;
}

.nav-links a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.page-section {
    scroll-margin-top: var(--header-height);
}

.dark-section {
    background: var(--dark);
    color: var(--light);
}

.hero-section {
    position: relative;
    min-height: calc(100svh - var(--header-height));
    background: #000;
    overflow: hidden;
}

.hero-media,
.hero-media iframe,
#youtube-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero-media {
    pointer-events: none;
}

.hero-scrim {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(0, 0, 0, 0.14) 0%, rgba(0, 0, 0, 0.24) 40%, rgba(0, 0, 0, 0.62) 100%);
}

.hero-overlay {
    position: relative;
    z-index: 1;
    min-height: calc(100svh - var(--header-height));
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-top: var(--hero-pad-top);
    padding-bottom: var(--hero-pad-bottom);
    padding-left: var(--hero-pad-x);
    padding-right: var(--hero-pad-x);
}

.hero-stack {
    width: min(var(--hero-card-width), 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--hero-stack-gap);
    text-align: center;
}

.brand-mark img {
    width: var(--hero-logo-width);
    max-width: calc(100vw - (var(--hero-pad-x) * 2));
    height: auto;
}

.hero-stack h1 {
    width: min(var(--hero-title-max), 100%);
    margin: 0;
    font-size: var(--hero-title-size);
    line-height: 0.98;
    font-weight: 800;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.45);
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--cta-gap);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.85rem 1.5rem;
    border-radius: 6px;
    border: 2px solid transparent;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.btn-primary {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--light);
}

.btn-outline {
    border-color: var(--light);
    background: transparent;
    color: var(--light);
}

.audio-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--audio-pill-gap);
    padding: var(--audio-pill-pad-y) var(--audio-pill-pad-x);
    background: var(--audio-pill-bg);
    border: var(--audio-pill-border);
    border-radius: var(--audio-pill-radius);
    backdrop-filter: blur(12px);
}

.btn-vol {
    width: var(--audio-button-size);
    height: var(--audio-button-size);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.92);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--audio-row-gap);
    padding: 0;
    cursor: pointer;
}

.btn-vol svg {
    width: var(--audio-icon-size);
    height: var(--audio-icon-size);
    stroke-width: 2.2;
}

.btn-audio-toggle {
    width: auto;
    min-width: var(--audio-button-size);
    padding: 0 14px;
}

.audio-label {
    display: none;
    white-space: nowrap;
    font-size: 0.95rem;
    font-weight: 700;
}

.audio-controls.unmuted #mute-toggle .mute-icon,
#mute-toggle .unmute-icon {
    display: none;
}

.audio-controls.unmuted #mute-toggle .unmute-icon {
    display: block;
}

.section-block {
    padding: var(--section-pad-y) 0;
}

.challenge-section {
    min-height: 100svh;
    display: flex;
    align-items: center;
}

.solution-section {
    background: var(--light);
}

.contact-section {
    min-height: 100svh;
    display: flex;
    align-items: center;
    background: var(--light-gray);
}

.eyebrow {
    display: block;
    margin-bottom: 1rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.82rem;
    font-weight: 700;
}

.large-text {
    max-width: 780px;
    margin: 0;
    font-size: 1.45rem;
    font-weight: 300;
}

.section-block h2 {
    margin: 0 0 1rem;
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    line-height: 1;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--light);
    padding: 2rem;
    border-top: 5px solid var(--primary);
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
}

.feature-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 0.5rem;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

.feature-icon-r { background-image: url("assets/R.png"); }
.feature-icon-o { background-image: url("assets/o.png"); }
.feature-icon-i { background-image: url("assets/i.png"); }

.feature-card h3 {
    margin: 0 0 0.75rem;
    color: var(--dark);
}

.feature-card p {
    margin: 0;
    line-height: 1.6;
}

.contact-card {
    width: min(720px, 100%);
    background: var(--light);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-strong);
}

.contact-card h2,
.contact-card p {
    margin-top: 0;
}

#contact-form input,
#contact-form textarea {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font: inherit;
}

#contact-form button {
    font: inherit;
}

@media (max-width: 900px) {
    :root {
        --section-pad-y: 72px;
        --hero-pad-x: 24px;
        --hero-pad-top: 24px;
        --hero-pad-bottom: 56px;
        --hero-logo-width: 180px;
        --hero-title-size: clamp(2.4rem, 8vw, 3.6rem);
    }

    .site-nav {
        gap: 16px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: flex-end;
    }

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

@media (max-width: 640px) {
    :root {
        --header-height: 76px;
        --hero-pad-x: 16px;
        --hero-pad-top: 16px;
        --hero-pad-bottom: 40px;
        --hero-stack-gap: 14px;
        --hero-logo-width: 140px;
        --hero-title-size: clamp(2rem, 10vw, 2.8rem);
        --audio-button-size: 40px;
        --audio-icon-size: 18px;
        --audio-pill-pad-y: 8px;
        --audio-pill-pad-x: 8px;
        --audio-pill-gap: 8px;
    }

    body {
        scroll-snap-type: y proximity;
        scroll-padding-top: var(--mobile-snap-padding-top);
    }

    .page-section,
    .feature-card {
        scroll-snap-align: start;
        scroll-snap-stop: always;
    }

    .site-nav {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px 0;
    }

    .site-logo img {
        height: 24px;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-start;
        gap: 4px;
    }

    .cta-row {
        display: none;
    }

    .audio-controls #vol-up,
    .audio-controls #vol-down {
        display: none;
    }

    .audio-label {
        display: inline;
    }

    .feature-card {
        min-height: var(--mobile-roi-card-min-height);
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .contact-card {
        padding: 1.5rem;
    }
}