:root {
    --bg: #164A19;
    --card: #28612B;
    --ivory: #F5F2E9;
    --muted: #C5CCBE;
    --star: #FFA41C;
    --dark: #0e3212;
    --ink: #122018;
}


/* ========================================
   BASE
   ======================================== */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ivory);
    font-family: Arial, sans-serif;
    line-height: 1.55;
}

h1,
h2,
h3 {
    font-family: Georgia, serif;
    line-height: 1.08;
    margin: 0.25em 0;
}

.wrap {
    width: min(1120px, 92%);
    margin: auto;
}

.center {
    text-align: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    font-weight: 700;
}

.section-title {
    font-size: clamp(1.9rem, 2.9vw, 2.5rem);
}

.micro {
    font-size: 0.84rem;
    color: var(--muted);
    margin-top: 13px;
}


/* ========================================
   HEADER / NAVIGATION
   ======================================== */

header {
    position: absolute;
    z-index: 5;
    width: 100%;
    padding: 22px 0;
}

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

.brand {
    font: 700 1.25rem Georgia, serif;
}

.navlinks {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav a,
.source a {
    color: var(--ivory);
    text-decoration: none;
}


/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    background: var(--ivory);
    color: var(--dark) !important;
    padding: 14px 24px;
    border-radius: 9px;
    text-decoration: none;
    font-weight: 800;
}

.btn.small {
    padding: 10px 16px;
    font-size: 0.85rem;
}


/* ========================================
   HERO
   ======================================== */

.hero {
    min-height: min(680px, 90vh);

    background:
        linear-gradient(
            90deg,
            rgba(10, 50, 17, 0.95),
            rgba(10, 50, 17, 0.72) 44%,
            rgba(10, 50, 17, 0.08) 78%
        ),
        url("/assets/hero.jpg?v=2") center / cover no-repeat;

    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero h1 {
    font-size: clamp(2.4rem, 4vw, 3.25rem);
    max-width: 720px;
}

.hero h1 br {
    display: none;
}

.hero p {
    max-width: 530px;
    font-size: 1.15rem;
}

.hero-copy {
    padding-top: 35px;
}


/* ========================================
   GENERAL SECTIONS
   ======================================== */

section {
    padding: 80px 0;
}

.intro {
    max-width: 760px;
}

.block-head {
    max-width: 780px;
    margin: 70px auto 28px;
}


/* ========================================
   CARDS
   ======================================== */

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card {
    background: var(--card);
    border-radius: 13px;
    padding: 28px;
}


/* ========================================
   PHOTO GRIDS
   ======================================== */

.photo-grid {
    display: grid;
    gap: 18px;
    margin-top: 32px;
}

.photo-grid.four {
    grid-template-columns: repeat(4, 1fr);
}

.photo-grid.three {
    grid-template-columns: repeat(3, 1fr);
}

.photo-card {
    background: var(--card);
    border-radius: 13px;
    overflow: hidden;
}

.photo-card img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.photo-card > div {
    padding: 18px 20px;
}

.photo-card h3 {
    margin: 0 0 6px;
}

.photo-card p {
    margin: 0;
    color: var(--muted);
}


/* ========================================
   FEATURE ICONS
   ======================================== */

.feature-icon,
.step-icon,
.final-leaf {
    width: 58px;
    height: 58px;
    display: block;
    margin: 0 auto 18px;
    color: var(--ivory);

    filter:
        brightness(0)
        saturate(100%)
        invert(94%)
        sepia(8%)
        saturate(270%)
        hue-rotate(349deg)
        brightness(105%);
}

.feature-cards .card {
    padding-top: 34px;
}


/* ========================================
   HOW IT WORKS
   ======================================== */

.steps {
    background: var(--ivory);
    color: var(--ink);
}

.stepgrid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
    margin-top: 35px;
}

.step b {
    color: var(--bg);
    display: block;
}

.step p {
    margin: 0.4em 0;
}

.step-icon {
    filter: none;
    color: var(--bg);
}


/* ========================================
   SCIENCE SECTION
   ======================================== */

.science-head {
    max-width: 800px;
    margin: auto;
}

.science-visual {
    display: grid;
    grid-template-columns: 1fr 1.05fr 1fr;
    gap: 28px;
    align-items: center;
    margin: 40px 0;
}

.science-side {
    background: var(--card);
    padding: 28px;
    border-radius: 14px;
}

.science-side h3 {
    font-size: 1.7rem;
}

.science-side span {
    font-weight: 700;
    color: var(--muted);
}

.lotus-wrap {
    text-align: center;
}

.lotus-wrap img {
    display: block;
    width: 100%;
    max-width: 390px;
    max-height: 390px;
    height: auto;
    object-fit: contain;
    margin: 0 auto;
}

.breath-line {
    font-size: 0.72rem;
    letter-spacing: 0.15em;
    color: var(--muted);
    margin-top: 8px;
}


/* ========================================
   SCIENCE SOURCES
   ======================================== */

.sources {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.source {
    background: var(--card);
    padding: 22px;
    border-radius: 10px;
}

.source a {
    text-decoration: underline;
}


/* ========================================
   LIGHT SECTION / USE CASES
   ======================================== */

.light {
    background: var(--ivory);
    color: var(--ink);
}

.light-card {
    background: #ffffff;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.light-card p {
    color: #536052;
}


/* ========================================
   PRODUCT / GUIDE
   ======================================== */

.product {
    display: grid;
    grid-template-columns: 1.08fr 1fr;
    gap: 45px;
    align-items: center;
}

.guide-image {
    display: block;
    width: 100%;
    max-width: 580px;
    height: auto;
    object-fit: contain;
    border-radius: 14px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
}

.checks {
    padding: 0;
    list-style: none;
}

.checks li {
    margin: 9px 0;
}

.checks li::before {
    content: "✓";
    font-weight: 900;
    margin-right: 10px;
}


/* ========================================
   TESTIMONIALS
   ======================================== */

.testimonials-title {
    margin-top: 70px;
}

.testimonials {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.stars {
    color: var(--star);
    letter-spacing: 2px;
    font-size: 1.12rem;
}


/* ========================================
   NATURE BANNER
   ======================================== */

.banner {
    background:
        linear-gradient(
            rgba(10, 50, 17, 0.48),
            rgba(10, 50, 17, 0.55)
        ),
        url("/assets/calm-banner.jpg") center / cover no-repeat;

    padding: 105px 0;
    text-align: center;
}

.banner h2 {
    font-size: clamp(2rem, 3.6vw, 3rem);
}


/* ========================================
   OFFER
   ======================================== */

.offer {
    display: grid;
    grid-template-columns: 2fr 1fr;
    background: var(--card);
    border-radius: 14px;
    overflow: hidden;
    margin-top: 35px;
}

.offer > div {
    padding: 32px;
}

.pricebox {
    border-left: 1px solid rgba(255, 255, 255, 0.15);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.price {
    font-size: 2.25rem;
    font-weight: 800;
}


/* ========================================
   FAQ
   ======================================== */

.faq {
    max-width: 960px;
}

.faq details {
    border-bottom: 1px solid rgba(245, 242, 233, 0.25);
    padding: 16px 4px;
}

.faq summary {
    cursor: pointer;
    font-weight: 700;
    list-style: none;
    display: flex;
    justify-content: space-between;
}

.faq summary::after {
    content: "+";
    font-size: 1.4rem;
}

.faq details[open] summary::after {
    content: "−";
}

.faq details p {
    color: var(--muted);
    max-width: 820px;
}


/* ========================================
   FINAL CTA
   ======================================== */

.final {
    text-align: center;
}

.final-leaf {
    width: 64px;
    height: 64px;
}


/* ========================================
   FOOTER
   ======================================== */

.footer-brand {
    color: var(--ivory);
}

footer {
    background: #0d3512;
    padding: 34px 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.foot {
    display: flex;
    justify-content: space-between;
    gap: 25px;
    align-items: center;
}

.foot a {
    color: var(--muted);
    margin-right: 15px;
}


/* ========================================
   TABLET
   ======================================== */

@media (max-width: 900px) {

    .photo-grid.four {
        grid-template-columns: repeat(2, 1fr);
    }

    .science-visual {
        grid-template-columns: 1fr;
    }

    .lotus-wrap {
        order: -1;
    }

    .lotus-wrap img {
        max-width: 330px;
        max-height: 330px;
    }
}


/* ========================================
   MOBILE
   ======================================== */

@media (max-width: 700px) {

    .navlinks a:not(.btn) {
        display: none;
    }

    .hero {
        min-height: 650px;
        background-position: 62% center;
    }

    .hero h1 {
        font-size: 3.55rem;
    }

    .hero h1 br {
        display: inline;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .banner h2 {
        font-size: 2.5rem;
    }

    .cards,
    .sources,
    .testimonials,
    .photo-grid.four,
    .photo-grid.three,
    .stepgrid,
    .product,
    .offer {
        grid-template-columns: 1fr;
    }

    .pricebox {
        border-left: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
    }

    .foot {
        flex-direction: column;
        align-items: flex-start;
    }

    section {
        padding: 58px 0;
    }

    .photo-card img {
        aspect-ratio: 16 / 9;
    }

    .guide-image {
        max-width: 100%;
        margin: 0 auto;
    }
}