:root {
    --bg: #0b1220;
    --surface: var(--bg);
    --card: rgba(255, 255, 255, 0.06);
    --text: #e6f2f7;
    --muted: #a6c3cf;
    --accent: #22d3ee;
    --accent-2: #67e8f9;
    --ring: rgba(34, 211, 238, 0.35);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    --radius: 18px;
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        radial-gradient(1200px 600px at 10% -10%, #0d2030 0%, transparent 60%),
        radial-gradient(1200px 600px at 110% 10%, #102538 0%, transparent 60%)
}

#bubbles {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    filter: blur(0.2px);
    will-change: transform
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: rgba(8, 12, 20, 0.55);
    backdrop-filter: saturate(160%) blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateZ(0)
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 800;
    letter-spacing: .3px
}

.hamburger {
    display: none;
    background: transparent;
    border: 0;
    padding: 8px;
    cursor: pointer
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: #cde9f2;
    margin: 6px 0;
    transition: transform .25s ease, opacity .25s ease
}

.nav {
    display: flex;
    gap: 18px;
    align-items: center
}

.nav a {
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    padding: 8px 10px;
    border-radius: 10px;
    transition: color .2s ease, background .2s ease, transform .2s ease
}

.nav a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-1px)
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #04151e;
    padding: 12px 18px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 800;
    box-shadow: 0 8px 20px rgba(34, 211, 238, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: transform .15s ease, box-shadow .2s ease, filter .2s ease
}

.btn:hover {
    transform: translateY(-2px);
    filter: saturate(1.1);
    box-shadow: 0 14px 30px rgba(34, 211, 238, 0.3)
}

.btn--ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.15)
}

.btn--small {
    padding: 8px 12px;
    border-radius: 10px
}

/* Hero */
.hero {
    position: relative;
    padding: 100px 20px 40px;
    min-height: 68vh;
    display: grid;
    place-items: center;
    text-align: center;
    isolation: isolate
}

.hero__content {
    max-width: 900px
}

.hero h1 {
    font-size: clamp(34px, 6vw, 64px);
    line-height: 1.04;
    margin: 0 0 14px
}

.hero .accent {
    background: linear-gradient(135deg, #e6fdff 10%, #67e8f9 40%, #22d3ee 70%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent
}

.hero p {
    color: var(--muted);
    font-size: clamp(16px, 2.4vw, 20px)
}

.hero__cta {
    margin-top: 22px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap
}

.hero__wave {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    width: 100%;
    height: 140px;
    display: block;
    transform: translateZ(0)
}

.hero__wave path {
    fill: var(--surface)
}

/* Marquee */
.marquee {
    background: transparent;
    overflow: hidden
}

.marquee__track {
    display: flex;
    width: max-content;
    animation: marquee var(--marquee-duration, 20s) linear infinite;
    will-change: transform
}

.marquee__group {
    display: flex;
    gap: 40px;
    padding: 16px 0
}

@keyframes marquee {
    from {
        transform: translate3d(0, 0, 0)
    }

    to {
        transform: translate3d(-50%, 0, 0)
    }
}

.logo {
    padding: 10px 16px;
    border-radius: 999px;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.06);
    color: #bfe9f7;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow)
}

/* Sections & cards */
.section {
    padding: 72px 20px;
    background: transparent
}

.container {
    max-width: 1100px;
    margin: 0 auto
}

.section__title {
    font-size: clamp(26px, 4.5vw, 42px);
    margin: 0 0 26px;
    text-align: center
}

.grid {
    display: grid;
    gap: 22px
}

.cards {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr))
}

.card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow)
}

.card__icon {
    font-size: 28px;
    line-height: 1;
    margin-bottom: 10px
}

/* Split layout */
.split {
    display: grid;
    gap: 28px;
    align-items: center;
    grid-template-columns: 1.1fr 1fr
}

.split__copy p {
    color: var(--muted)
}

@media (max-width:900px) {
    .split {
        grid-template-columns: 1fr
    }
}

/* Static bottle image */
.bottle-img {
    width: 100%;
    max-width: 480px;
    display: block;
    margin-inline: auto;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25)
}

/* Stats, Impact, etc. */
.stats {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    margin: 22px 0
}

.stat {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 14px 16px;
    min-width: 160px
}

.stat__num {
    font-size: 34px;
    font-weight: 800
}

.stat__suffix {
    font-size: 22px;
    font-weight: 800;
    margin-left: 2px
}

.impact {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr))
}

.impact__card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 22px;
    text-align: center
}

.impact__num {
    font-size: 34px;
    font-weight: 800;
    margin: 6px 0 0
}

.badge {
    margin-left: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #bfe9f7;
    font-size: 12px;
    font-weight: 700;
    vertical-align: middle
}

/* Accordion */
.accordion details {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 14px 16px
}

.accordion details+details {
    margin-top: 12px
}

.accordion summary {
    cursor: pointer;
    list-style: none;
    font-weight: 700
}

.accordion summary::-webkit-details-marker {
    display: none
}

.accordion p {
    color: var(--muted);
    margin: 10px 0 0
}

/* Forms */
.forms {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr))
}

.form h3 {
    margin-top: 0
}

.form label {
    display: grid;
    gap: 8px;
    margin: 12px 0
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: #08101b;
    color: var(--text);
    outline: none;
    transition: box-shadow .2s ease, border-color .2s ease
}

input:focus,
select:focus,
textarea:focus {
    box-shadow: 0 0 0 6px var(--ring);
    border-color: var(--accent)
}

.form__note {
    color: var(--muted);
    font-size: 14px;
    margin: 8px 0 0
}

/* Toast */
.toast {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%) translateY(16px);
    background: rgba(12, 20, 30, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #d6f6ff;
    padding: 12px 14px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
    z-index: 60
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%)
}

/* Footer */
.site-footer {
    background: transparent;
    padding: 28px 20px;
    color: #b6d5df;
    border-top: 1px solid rgba(255, 255, 255, 0.08)
}

.site-footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap
}

/* Reveal + mobile nav */
.reveal {
    opacity: 0;
    transform: translateY(16px) scale(.98);
    transition: opacity .6s cubic-bezier(.2, .65, .2, 1), transform .6s cubic-bezier(.2, .65, .2, 1);
    will-change: opacity, transform
}

.reveal.is-visible {
    opacity: 1;
    transform: none
}

@media (max-width:860px) {
    .hamburger {
        display: block
    }

    .nav {
        position: fixed;
        right: 16px;
        top: 68px;
        background: rgba(10, 16, 26, 0.9);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.08);
        padding: 12px;
        border-radius: 16px;
        flex-direction: column;
        gap: 6px;
        transform: scale(.98) translateY(-6px);
        opacity: 0;
        pointer-events: none;
        transition: transform .2s ease, opacity .2s ease
    }

    .nav.is-open {
        transform: none;
        opacity: 1;
        pointer-events: auto
    }
}

a:focus,
button:focus {
    outline: none;
    box-shadow: 0 0 0 6px var(--ring)
}

/* Reduced motion */
@media (prefers-reduced-motion:reduce) {
    .marquee__track {
        animation: none
    }
}