* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --black: #000;
    --white: #fff;
    --muted: rgba(255, 255, 255, 0.72);
    --line: rgba(255, 255, 255, 0.52);
}

html {
    background: var(--black);
}

body {
    min-height: 100vh;
    background: var(--black);
    color: var(--white);
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 300;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

.site-nav {
    position: fixed;
    z-index: 20;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 44px;
    background: #000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.logo {
    display: inline-flex;
    gap: 7px;
    align-items: baseline;
    font-size: 15px;
    letter-spacing: 0.035em;
    white-space: nowrap;
}

.logo span {
    font-weight: 300;
}

.logo strong {
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 42px;
    list-style: none;
    font-size: 13px;
    font-weight: 300;
    letter-spacing: 0.035em;
}

.nav-links a,
.footer-links a,
.site-footer a {
    transition: opacity 180ms ease;
}

.nav-links a:hover,
.footer-links a:hover,
.site-footer a:hover {
    opacity: 0.7;
}

.menu-toggle {
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.72);
    background: transparent;
    color: var(--white);
    padding: 9px 12px;
    font: inherit;
    font-size: 11px;
    letter-spacing: 0.11em;
}

.hero,
.ecosystem-hero {
    min-height: calc(100vh - 72px);
    margin-top: 72px;
    position: relative;
    display: grid;
    place-items: center;
    background-size: cover;
    background-position: center;
}

.hero-landing {
    background-image: linear-gradient(rgba(0, 0, 0, 0.61), rgba(0, 0, 0, 0.67)), url("assets/images/landing-desktop.jpg");
}

.hero-content {
    width: min(1060px, calc(100vw - 48px));
    padding: 48px 24px;
    text-align: center;
}

.hero-content h1 {
    font-size: clamp(28px, 4.15vw, 48px);
    line-height: 1.2;
    font-weight: 300;
    letter-spacing: 0.018em;
    margin-bottom: 46px;
}

.hero-copy {
    display: grid;
    gap: 30px;
    margin: 0 auto 52px;
    max-width: 760px;
    color: rgba(255, 255, 255, 0.86);
    font-size: clamp(15px, 1.55vw, 19px);
    line-height: 1.65;
    letter-spacing: 0.01em;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 290px;
    padding: 19px 34px;
    border: 1px solid rgba(255, 255, 255, 0.86);
    background: rgba(0, 0, 0, 0.64);
    color: var(--white);
    font-size: clamp(13px, 1.2vw, 18px);
    font-weight: 300;
    letter-spacing: 0.095em;
    transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.cta-button:hover {
    background: var(--white);
    color: var(--black);
}

.ecosystem-hero {
    background-image: linear-gradient(rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.77)), url("assets/images/ecosystem-desktop.jpg");
    background-size: cover;
    background-position: center 46%;
    align-items: center;
    padding: 72px 40px;
}

.ecosystem-content {
    width: min(1180px, 100%);
    text-align: center;
}

.ecosystem-header {
    margin: 0 auto 62px;
    max-width: 780px;
}

.eyebrow {
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 0.22em;
}

.ecosystem-header h1 {
    margin-bottom: 26px;
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 300;
    letter-spacing: 0.08em;
}

.ecosystem-header p {
    color: rgba(255, 255, 255, 0.82);
    font-size: clamp(16px, 1.7vw, 22px);
    line-height: 1.6;
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(1px);
}

.ecosystem-card {
    min-height: 285px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 34px 28px 30px;
    text-align: center;
    border-right: 1px solid var(--line);
}

.ecosystem-card:last-child {
    border-right: 0;
}

.number {
    font-family: Didot, "Bodoni 72", Georgia, serif;
    color: rgba(255, 255, 255, 0.28);
    font-size: clamp(54px, 6vw, 86px);
    line-height: 0.9;
    font-weight: 400;
    letter-spacing: -0.045em;
}

.ecosystem-card h2 {
    margin-top: 24px;
    margin-bottom: 20px;
    font-size: clamp(19px, 2vw, 28px);
    line-height: 1.25;
    font-weight: 300;
    letter-spacing: 0.055em;
}

.ecosystem-card p {
    color: rgba(255, 255, 255, 0.82);
    font-size: 16px;
    line-height: 1.55;
}

.ecosystem-card a {
    margin-top: 36px;
    align-self: center;
    border: 1px solid rgba(255, 255, 255, 0.82);
    padding: 13px 18px;
    font-size: 11px;
    letter-spacing: 0.11em;
    transition: background 180ms ease, color 180ms ease;
}

.ecosystem-card a:hover {
    background: var(--white);
    color: var(--black);
}

.book-page {
    min-height: calc(100vh - 72px);
    margin-top: 72px;
    padding: 86px 44px 76px;
    background: #000;
}

.book-layout {
    width: min(1160px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(280px, 0.88fr) minmax(360px, 1.12fr);
    gap: clamp(56px, 7vw, 96px);
    align-items: center;
}

.book-page-editorial {
    padding-top: clamp(72px, 8vw, 96px);
}

.book-layout-editorial {
    width: min(1080px, 100%);
    grid-template-columns: minmax(260px, 0.82fr) minmax(360px, 1.18fr);
    gap: clamp(58px, 9vw, 118px);
    align-items: start;
}

.book-visual {
    display: flex;
    justify-content: center;
    align-self: start;
    margin-top: 0;
}

.book-visual img {
    width: min(100%, 440px);
    height: auto;
    display: block;
    box-shadow: none;
}

.book-copy {
    max-width: 610px;
}

.book-copy .eyebrow {
    margin-bottom: 24px;
}

.book-copy h1 {
    display: block;
    margin-bottom: 32px;
    font-size: clamp(20px, 2.35vw, 31px);
    line-height: 1.08;
    letter-spacing: 0.035em;
    white-space: nowrap;
}

.book-title .light {
    font-weight: 300;
}

.book-title .regular {
    font-weight: 400;
}

.book-tagline {
    max-width: 620px;
    margin-bottom: 46px;
    color: rgba(255, 255, 255, 0.84);
    font-size: clamp(25px, 3.4vw, 46px);
    line-height: 1.42;
    font-weight: 300;
    letter-spacing: 0.005em;
}

.book-description {
    display: grid;
    gap: 18px;
    max-width: 560px;
    margin-bottom: 42px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 15.5px;
    line-height: 1.82;
}

.book-description strong,
.book-lede {
    color: #fff;
    font-weight: 400;
}

.book-lede {
    font-size: 17px;
    line-height: 1.7;
}

.book-details {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    max-width: 620px;
    margin-bottom: 42px;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
}

.book-details div {
    padding: 18px 18px 18px 0;
    border-bottom: 0;
}

.book-details dt {
    margin-bottom: 6px;
    color: rgba(255, 255, 255, 0.52);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.book-details dd {
    color: rgba(255, 255, 255, 0.86);
    font-size: 14px;
}

.quote-card {
    max-width: 560px;
    margin-bottom: 38px;
    padding-left: 0;
    border-left: 0;
}

.quote-card blockquote {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 20px;
    line-height: 1.55;
    font-weight: 300;
}

.quote-card figcaption {
    color: rgba(255, 255, 255, 0.52);
    font-size: 12px;
    letter-spacing: 0.06em;
}

.book-buy-options {
    display: grid;
    gap: 0;
    margin-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.24);
    border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}

.book-buy-card {
    display: grid;
    grid-template-columns: minmax(135px, 0.85fr) minmax(72px, 0.3fr) minmax(210px, 1fr);
    align-items: center;
    gap: 24px;
    padding: 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.book-buy-card:last-child {
    border-bottom: 0;
}

.buy-label {
    color: rgba(255, 255, 255, 0.66);
    font-size: 11px;
    letter-spacing: 0.14em;
    line-height: 1.45;
    text-transform: uppercase;
}

.book-reserve-note {
    color: rgba(255, 255, 255, 0.58);
    font-size: 13px;
    line-height: 1.7;
    text-align: center;
}

.book-buy-button {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    grid-column: 3;
    justify-self: center;
    min-width: 0;
    width: fit-content;
    min-height: 58px;
    margin-top: -4px;
    padding: 13px 22px;
    border: 1px solid rgba(255, 255, 255, 0.84);
    background: rgba(0, 0, 0, 0.4);
    color: var(--white);
    font-size: 11px;
    letter-spacing: 0.14em;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
}

.book-buy-button:hover {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}

.book-price {
    font-family: Didot, "Bodoni 72", Georgia, serif;
    font-size: 42px;
    line-height: 1;
    font-weight: 400;
}

.cta-small {
    min-width: 210px;
    padding: 17px 28px;
    font-size: 13px;
}

.deck-page {
    min-height: calc(100vh - 72px);
    margin-top: 72px;
    padding: clamp(72px, 8vw, 104px) 44px 82px;
    background:
        radial-gradient(circle at 78% 20%, rgba(255, 255, 255, 0.08), transparent 32%),
        linear-gradient(180deg, #000 0%, #050505 100%);
}

.deck-layout {
    width: min(1120px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(360px, 1.08fr) minmax(280px, 0.92fr);
    gap: clamp(58px, 9vw, 126px);
    align-items: center;
}

.deck-copy {
    max-width: 610px;
}

.deck-copy .eyebrow {
    margin-bottom: 26px;
}

.deck-copy h1 {
    margin-bottom: 34px;
    font-size: clamp(32px, 4.7vw, 62px);
    line-height: 1.08;
    font-weight: 300;
    letter-spacing: 0.015em;
}

.deck-lede {
    max-width: 560px;
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.86);
    font-size: clamp(20px, 2.1vw, 29px);
    line-height: 1.42;
    font-weight: 300;
}

.deck-sublede {
    max-width: 560px;
    margin-bottom: 36px;
    color: rgba(255, 255, 255, 0.72);
    font-size: clamp(18px, 1.8vw, 24px);
    line-height: 1.42;
    font-weight: 300;
}

.deck-description {
    display: grid;
    gap: 18px;
    max-width: 540px;
    margin-bottom: 42px;
    color: rgba(255, 255, 255, 0.74);
    font-size: 15.5px;
    line-height: 1.82;
}

.deck-details {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 560px;
    margin-bottom: 42px;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
}

.deck-details div {
    padding: 18px 18px 18px 0;
}

.deck-details dt {
    margin-bottom: 7px;
    color: rgba(255, 255, 255, 0.52);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.deck-details dd {
    color: rgba(255, 255, 255, 0.86);
    font-size: 14px;
}

.deck-cta {
    min-width: 265px;
}

.deck-hero-offer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    max-width: 560px;
    margin-top: 0;
    padding: 28px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
}

.deck-hero-offer .deck-product-label {
    margin-bottom: 9px;
}

.deck-hero-offer .book-price {
    display: block;
    margin-bottom: 8px;
}

.deck-hero-offer div > p:not(.deck-product-label):not(.access-note) {
    color: rgba(255, 255, 255, 0.62);
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.deck-hero-offer .access-note {
    margin-top: 8px;
    color: rgba(255, 255, 255, 0.46);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    line-height: 1.5;
    text-transform: uppercase;
}

.deck-hero-offer .book-buy-button {
    justify-self: auto;
    min-width: 150px;
}

.deck-visual {
    display: grid;
    justify-items: center;
    gap: 22px;
}

.phone-frame {
    width: min(100%, 338px);
    aspect-ratio: 9 / 16;
    padding: 9px;
    border: 1px solid rgba(255, 255, 255, 0.34);
    border-radius: 34px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.03));
    box-shadow: 0 34px 80px rgba(0, 0, 0, 0.58);
}

.phone-frame video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: 26px;
    background: #000;
}

.deck-caption {
    color: rgba(255, 255, 255, 0.54);
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.deck-shop {
    width: min(1180px, 100%);
    margin: clamp(84px, 12vw, 146px) auto 0;
    padding-top: clamp(54px, 7vw, 82px);
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.deck-shop-header {
    width: min(790px, 100%);
    margin: 0 auto clamp(42px, 6vw, 70px);
    text-align: center;
}

.deck-shop-header .eyebrow {
    margin-bottom: 24px;
}

.deck-shop-header h2 {
    margin-bottom: 24px;
    color: #fff;
    font-size: clamp(32px, 4.6vw, 58px);
    line-height: 1.08;
    font-weight: 300;
    letter-spacing: 0.01em;
}

.deck-shop-header p:last-child {
    max-width: 680px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.72);
    font-size: 15.5px;
    line-height: 1.82;
}

.deck-products {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(18px, 2.4vw, 30px);
    align-items: stretch;
}

.deck-products-secondary {
    grid-template-columns: repeat(2, minmax(0, 420px));
    justify-content: center;
}

.deck-product-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 100%;
    padding: clamp(28px, 3.4vw, 42px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.018));
}

.deck-product-label {
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.48);
    font-size: 10.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.deck-product-card h3 {
    margin-bottom: 22px;
    color: #fff;
    font-size: clamp(24px, 2.7vw, 34px);
    line-height: 1.08;
    font-weight: 300;
    letter-spacing: 0.01em;
}

.deck-product-card p:not(.deck-product-label) {
    color: rgba(255, 255, 255, 0.72);
    font-size: 14.5px;
    line-height: 1.78;
}

.deck-product-card .deck-product-subtitle {
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 15.5px;
    line-height: 1.5;
}

.deck-product-card .deck-product-access {
    margin-top: 18px;
    color: rgba(255, 255, 255, 0.46);
    font-size: 10px;
    letter-spacing: 0.11em;
    line-height: 1.55;
    text-transform: uppercase;
}

.deck-product-card dl {
    display: grid;
    gap: 16px;
    margin: 32px 0;
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.deck-product-card dt {
    margin-bottom: 6px;
    color: rgba(255, 255, 255, 0.46);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.deck-product-card dd {
    color: rgba(255, 255, 255, 0.84);
    font-size: 13.5px;
}

.deck-product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.deck-product-footer .book-buy-button {
    justify-self: auto;
    min-width: 154px;
}

.deck-preview-panel {
    width: min(620px, 100%);
    margin: clamp(52px, 7vw, 82px) auto 0;
    text-align: center;
}

.preview-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 22px;
    margin-bottom: 26px;
}

.preview-tab {
    padding: 8px 0;
    border: 0;
    border-bottom: 1px solid transparent;
    background: transparent;
    color: rgba(255, 255, 255, 0.46);
    font: inherit;
    font-size: 10.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    cursor: pointer;
}

.preview-tab.active {
    border-bottom-color: #fff;
    color: #fff;
}

.preview-card {
    position: relative;
    width: min(100%, 430px);
    min-height: 380px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.22);
    background: #050505;
    color: #fff;
    cursor: pointer;
    perspective: 1200px;
}

.preview-face {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 22px;
    padding: 42px 34px;
    backface-visibility: hidden;
    transition: transform 0.62s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-back {
    transform: rotateY(180deg);
}

.preview-card.flipped .preview-front {
    transform: rotateY(180deg);
}

.preview-card.flipped .preview-back {
    transform: rotateY(360deg);
}

.preview-french,
.preview-english {
    display: block;
    font-size: clamp(26px, 3.1vw, 38px);
    line-height: 1.22;
    font-weight: 300;
    letter-spacing: 0.005em;
}

.preview-meaning {
    display: block;
    max-width: 280px;
    color: rgba(255, 255, 255, 0.62);
    font-size: 12px;
    letter-spacing: 0.14em;
    line-height: 1.55;
    text-transform: uppercase;
}

.preview-hint {
    color: rgba(255, 255, 255, 0.34);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.preview-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(100%, 430px);
    margin: 24px auto 0;
}

.preview-controls button {
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    padding: 11px 20px;
    font: inherit;
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    cursor: pointer;
}

.preview-controls button:hover {
    border-color: #fff;
    background: #fff;
    color: #000;
}

.preview-count,
.deck-delivery-note {
    color: rgba(255, 255, 255, 0.48);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.deck-delivery-note {
    width: min(620px, 100%);
    margin: 36px auto 0;
    text-align: center;
    line-height: 1.7;
}

.session-page {
    min-height: calc(100vh - 72px);
    margin-top: 72px;
    padding: clamp(72px, 7vw, 96px) 44px 86px;
    background:
        radial-gradient(circle at 18% 16%, rgba(255, 255, 255, 0.075), transparent 32%),
        linear-gradient(180deg, #000 0%, #040404 100%);
}

.session-header {
    width: min(930px, 100%);
    margin: 0 auto;
    text-align: center;
    margin-bottom: clamp(54px, 7vw, 82px);
}

.session-header .eyebrow {
    margin-bottom: 28px;
}

.session-header h1 {
    margin-bottom: 32px;
    color: #fff;
    font-size: clamp(42px, 6.2vw, 82px);
    line-height: 1.04;
    font-weight: 300;
    letter-spacing: 0.005em;
}

.session-header p:last-child {
    max-width: 660px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.82);
    font-size: clamp(19px, 2vw, 27px);
    line-height: 1.48;
    font-weight: 300;
}

.session-offers {
    width: min(1180px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(26px, 4vw, 46px);
    align-items: stretch;
}

.session-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    padding: clamp(32px, 4vw, 46px);
    border: 1px solid rgba(255, 255, 255, 0.22);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018)),
        #050505;
}

.session-card-primary {
    border-color: rgba(255, 255, 255, 0.34);
}

.session-card-top {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    align-items: start;
    margin-bottom: 34px;
}

.session-number {
    font-family: Didot, "Bodoni 72", Georgia, serif;
    color: rgba(255, 255, 255, 0.62);
    font-size: clamp(46px, 5vw, 72px);
    line-height: 0.9;
}

.session-card h2 {
    margin-bottom: 10px;
    color: #fff;
    font-size: clamp(25px, 2.6vw, 36px);
    line-height: 1.12;
    font-weight: 300;
    letter-spacing: 0.01em;
}

.session-subtitle {
    color: rgba(255, 255, 255, 0.58);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.session-price-row {
    display: flex;
    align-items: baseline;
    gap: 18px;
    margin-bottom: 34px;
}

.session-price {
    font-family: Didot, "Bodoni 72", Georgia, serif;
    color: #fff;
    font-size: 46px;
    line-height: 1;
}

.session-duration {
    color: rgba(255, 255, 255, 0.54);
    font-size: 13px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.session-description {
    display: grid;
    gap: 16px;
    margin-bottom: 34px;
    color: rgba(255, 255, 255, 0.74);
    font-size: 15px;
    line-height: 1.78;
}

.session-description p:first-child {
    color: rgba(255, 255, 255, 0.9);
}

.session-for {
    margin-bottom: 38px;
    padding-top: 2px;
}

.session-label {
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.52);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.session-for ul {
    display: grid;
    gap: 14px;
    list-style: none;
}

.session-for li {
    position: relative;
    padding-left: 24px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 14.5px;
    line-height: 1.68;
}

.session-for li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.86em;
    width: 8px;
    height: 1px;
    background: rgba(255, 255, 255, 0.58);
}

.session-cta {
    min-width: 275px;
    margin-top: auto;
}

.about-page {
    min-height: calc(100vh - 72px);
    margin-top: 72px;
    padding: clamp(78px, 8vw, 112px) 44px 82px;
    background:
        radial-gradient(circle at 72% 18%, rgba(255, 255, 255, 0.07), transparent 34%),
        linear-gradient(180deg, #000 0%, #040404 100%);
}

.about-layout {
    width: min(1100px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(360px, 0.95fr) minmax(380px, 1.05fr);
    gap: clamp(58px, 8vw, 110px);
    align-items: start;
}

.about-intro {
    position: sticky;
    top: 120px;
}

.about-intro .eyebrow {
    margin-bottom: 28px;
}

.about-intro h1 {
    max-width: 560px;
    margin-bottom: 34px;
    color: #fff;
    font-size: clamp(42px, 6vw, 78px);
    line-height: 1.05;
    font-weight: 300;
    letter-spacing: 0.004em;
}

.about-lede {
    max-width: 510px;
    color: rgba(255, 255, 255, 0.82);
    font-size: clamp(19px, 2vw, 27px);
    line-height: 1.5;
    font-weight: 300;
}

.about-portrait {
    width: min(100%, 420px);
    margin-top: 44px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: #050505;
    overflow: hidden;
}

.about-portrait img {
    width: 100%;
    aspect-ratio: 4 / 5;
    display: block;
    object-fit: cover;
    object-position: 50% 36%;
    filter: saturate(0.82) contrast(1.04) brightness(0.82);
}

.about-copy {
    display: grid;
    gap: 20px;
    max-width: 610px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 16px;
    line-height: 1.86;
}

.about-copy p:first-child {
    color: rgba(255, 255, 255, 0.9);
}

.about-title,
.about-closing {
    color: rgba(255, 255, 255, 0.94);
}

.about-closing {
    font-size: clamp(20px, 2vw, 28px);
    line-height: 1.52;
    font-weight: 300;
}

.about-details {
    display: grid;
    grid-template-columns: 1fr;
    margin: 24px 0 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
}

.about-details div {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 24px;
    padding: 18px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.about-details div:last-child {
    border-bottom: 0;
}

.about-details dt {
    color: rgba(255, 255, 255, 0.52);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.about-details dd {
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
}

.about-cta {
    width: fit-content;
    min-width: 250px;
}

.contact-form {
    display: grid;
    gap: 18px;
    margin-top: 18px;
    padding-top: 34px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.form-header {
    margin-bottom: 4px;
}

.form-header .eyebrow {
    margin-bottom: 12px;
}

.form-header h2 {
    font-size: clamp(26px, 3vw, 42px);
    line-height: 1.16;
    font-weight: 300;
    letter-spacing: 0.02em;
}

.contact-form label {
    display: grid;
    gap: 9px;
    color: rgba(255, 255, 255, 0.56);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 0;
    background: rgba(255, 255, 255, 0.035);
    color: #fff;
    font: inherit;
    font-size: 15px;
    font-weight: 300;
    line-height: 1.5;
    letter-spacing: 0.01em;
    outline: 0;
    padding: 14px 15px;
    text-transform: none;
    transition: border-color 180ms ease, background 180ms ease;
}

.contact-form textarea {
    resize: vertical;
    min-height: 138px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: rgba(255, 255, 255, 0.72);
    background: rgba(255, 255, 255, 0.06);
}

.form-submit {
    width: fit-content;
    min-width: 190px;
    margin-top: 4px;
}

.hidden-field {
    display: none;
}

.site-footer {
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px 44px;
    background: #000;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 12px;
    letter-spacing: 0.035em;
}

.footer-links {
    display: inline-flex;
    gap: 22px;
}

@media (max-width: 820px) {
    .site-nav {
        height: auto;
        min-height: 66px;
        flex-wrap: wrap;
        padding: 18px 22px;
    }

    .logo {
        font-size: 12px;
        letter-spacing: 0.02em;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
        padding-top: 24px;
        font-size: 12px;
    }

    body.menu-open .nav-links {
        display: flex;
    }

    .hero,
    .ecosystem-hero {
        min-height: calc(100vh - 66px);
        margin-top: 66px;
        background-attachment: scroll;
    }

    .hero-landing {
        background-image: linear-gradient(rgba(0, 0, 0, 0.61), rgba(0, 0, 0, 0.69)), url("assets/images/landing-mobile.jpg");
        background-position: center center;
    }

    .hero-content {
        width: min(100%, calc(100vw - 28px));
        padding: 34px 4px;
    }

    .hero-content h1 {
        margin-bottom: 34px;
    }

    .hero-copy {
        gap: 24px;
        margin-bottom: 40px;
    }

    .cta-button {
        min-width: min(100%, 310px);
        padding: 17px 22px;
        font-size: 13px;
    }

    .ecosystem-hero {
        padding: 64px 22px;
        background-image: linear-gradient(rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.79)), url("assets/images/ecosystem-mobile.jpg");
        background-size: cover;
        background-position: center center;
    }

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

    .ecosystem-card {
        min-height: 230px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .ecosystem-card:last-child {
        border-bottom: 0;
    }

    .book-page {
        margin-top: 66px;
        padding: 54px 22px 56px;
    }

    .book-layout {
        grid-template-columns: 1fr;
        gap: 46px;
    }

    .book-visual img {
        width: min(78vw, 335px);
    }

    .book-visual {
        margin-top: 0;
    }

    .book-copy {
        max-width: none;
    }

    .book-copy h1 {
        white-space: normal;
        font-size: clamp(22px, 7vw, 30px);
    }

    .book-details {
        grid-template-columns: 1fr;
    }

    .book-details div:nth-last-child(-n + 2) {
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .book-details div:last-child {
        border-bottom: 0;
    }

    .book-buy-options {
        grid-template-columns: 1fr;
    }

    .book-buy-card {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 24px 0;
    }

    .book-buy-button {
        grid-column: auto;
        margin-top: 0;
        justify-self: start;
    }

    .book-reserve-note {
        max-width: 420px;
        text-align: left;
    }

    .deck-page {
        margin-top: 66px;
        padding: 54px 22px 58px;
    }

    .deck-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .deck-copy {
        max-width: none;
        order: 2;
    }

    .deck-visual {
        order: 1;
    }

    .deck-copy h1 {
        font-size: clamp(34px, 10vw, 48px);
    }

    .deck-details {
        grid-template-columns: 1fr;
    }

    .deck-details div {
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .deck-details div:last-child {
        border-bottom: 0;
    }

    .deck-hero-offer {
        align-items: flex-start;
        flex-direction: column;
    }

    .phone-frame {
        width: min(76vw, 300px);
        border-radius: 30px;
        padding: 8px;
    }

    .phone-frame video {
        border-radius: 23px;
    }

    .deck-products {
        grid-template-columns: 1fr;
    }

    .deck-products-secondary {
        grid-template-columns: 1fr;
    }

    .deck-product-card h3 {
        min-height: auto;
    }

    .deck-product-footer {
        align-items: flex-start;
        flex-direction: column;
    }

    .deck-product-footer .book-buy-button {
        justify-self: start;
    }

    .preview-tabs {
        gap: 16px;
    }

    .preview-card {
        min-height: 330px;
    }

    .preview-controls button {
        padding: 10px 14px;
    }

    .session-page {
        margin-top: 66px;
        padding: 56px 22px 60px;
    }

    .session-header {
        text-align: left;
        margin-bottom: 44px;
    }

    .session-header h1 {
        font-size: clamp(40px, 12vw, 56px);
    }

    .session-header p:last-child {
        margin: 0;
    }

    .session-offers {
        grid-template-columns: 1fr;
        gap: 44px;
    }

    .session-card {
        padding: 30px 24px;
    }

    .session-card-top {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .session-number {
        font-size: 54px;
    }

    .session-price-row {
        flex-direction: column;
        gap: 8px;
    }

    .session-cta {
        width: 100%;
        min-width: 0;
    }

    .about-page {
        margin-top: 66px;
        padding: 56px 22px 60px;
    }

    .about-layout {
        grid-template-columns: 1fr;
        gap: 44px;
    }

    .about-intro {
        position: static;
    }

    .about-intro h1 {
        font-size: clamp(40px, 12vw, 56px);
    }

    .about-portrait {
        width: 100%;
        margin-top: 34px;
    }

    .about-details div {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .about-cta {
        width: 100%;
        min-width: 0;
    }

    .form-submit {
        width: 100%;
        min-width: 0;
    }

    .site-footer {
        flex-direction: column;
        align-items: flex-start;
        padding: 18px 22px;
        font-size: 11px;
    }
}