/* ==================== Enso landing page ====================
   Loaded only by index.html. Legal, fallback and 404 pages keep styles.css.
   One accent (Premium Purple, matching the app), one signature motif (the ensō),
   and motion that settles rather than bounces. */

:root {
    /* Colour */
    --bg: #000000;
    --surface: #0B0B0D;
    --surface-2: #121418;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);
    --fg: #F6F7F8;
    --muted: #B4B9C2;
    --dim: #8B909C;
    --cream: #EFE7D6;
    --accent: #A78BFA;
    --accent-hover: #B9A2FC;
    --accent-soft: rgba(167, 139, 250, 0.12);

    /* Type */
    --serif: 'Instrument Serif', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

    /* Motion */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --fast: 150ms;
    --base: 250ms;
    --slow: 700ms;

    /* Layout */
    --max: 1200px;
    --gutter: clamp(20px, 4vw, 40px);
    --section: clamp(96px, 12vw, 168px);
    --radius: 24px;
}

/* ==================== Base ==================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    /* Anchor targets are the content inside each section (not the padded section),
       so a jump lands just below the sticky header with a little air */
    scroll-padding-top: 104px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--sans);
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--fg);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* height:auto so the width/height attributes set the ratio, not a fixed height */
img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

.container {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 8px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip-link {
    position: absolute;
    left: -9999px;
}

.skip-link:focus {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    padding: 12px 20px;
    border-radius: 12px;
    background: var(--accent);
    color: #0A0A0B;
    font-weight: 600;
    text-decoration: none;
}

/* ==================== Type ==================== */
.display {
    font-family: var(--serif);
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.04;
}

.display em {
    font-style: italic;
    color: var(--cream);
}

h1.display {
    font-size: clamp(3.25rem, 7.5vw, 6rem);
}

h2.display {
    font-size: clamp(2.5rem, 5.2vw, 4.25rem);
}

.eyebrow {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

.lede {
    font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
    line-height: 1.65;
    color: var(--muted);
    max-width: 34em;
}

section {
    position: relative;
    padding: var(--section) 0;
}

.section-head {
    max-width: 760px;
    margin-bottom: clamp(48px, 6vw, 80px);
}

.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-head .display {
    margin: 16px 0 20px;
}

.section-head p {
    color: var(--muted);
}

.section-head.center p {
    margin-left: auto;
    margin-right: auto;
}

.tagline {
    margin-top: clamp(64px, 8vw, 112px);
    font-family: var(--serif);
    font-style: italic;
    font-size: clamp(1.625rem, 2.8vw, 2.25rem);
    line-height: 1.3;
    color: var(--cream);
    text-align: center;
}

.aside-line {
    margin-top: 20px;
    text-align: center;
    color: var(--dim);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 26px;
    border-radius: 999px;
    font: 500 1rem/1 var(--sans);
    text-decoration: none;
    transition: transform var(--fast) var(--ease),
                background-color var(--fast) var(--ease),
                border-color var(--fast) var(--ease),
                box-shadow var(--base) var(--ease);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent);
    color: #0A0A0B;
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 12px 40px -12px rgba(167, 139, 250, 0.6);
}

/* Google Play isn't live yet — shown so Android visitors know, never clickable */
.btn-soon {
    border: 1px dashed rgba(255, 255, 255, 0.22);
    color: var(--dim);
    font-size: 0.9375rem;
    cursor: default;
    user-select: none;
}

.btn-soon:active {
    transform: none;
}

.btn-small {
    min-height: 38px;
    padding: 0 18px;
    font-size: 0.875rem;
    border: 1px solid var(--line-strong);
    color: var(--fg);
}

.btn-small:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

/* 14px gap: Apple asks for clear space of a quarter of the badge's height around it */
.store-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    gap: 14px;
}

/* Apple's official badge, unmodified (at least 40px tall on screen, per Apple's guidelines) */
.store-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 10px;
    transition: opacity var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.store-badge img {
    width: auto;
    height: 54px;
}

.store-badge:hover {
    opacity: 0.85;
}

.store-badge:active {
    transform: scale(0.97);
}

/* Desktop QR in the download card — only where there's a mouse and room (not on phones/tablets) */
.download-qr {
    display: none;
}

@media (min-width: 961px) and (hover: hover) {
    .download-qr {
        display: flex;
        align-items: center;
        gap: 16px;
        width: fit-content;
        margin: 32px auto 0;
        padding: 12px 20px 12px 12px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.02);
        text-align: left;
    }

    .download-qr img {
        width: 112px;
        height: 112px;
        border-radius: 10px;
    }

    .download-qr figcaption {
        max-width: 220px;
        font-size: 0.875rem;
        color: var(--dim);
    }
}

.availability {
    margin-top: 18px;
    font-size: 0.875rem;
    color: var(--dim);
}

/* ==================== Header ==================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    border-bottom: 1px solid transparent;
    transition: border-color var(--base) var(--ease), background-color var(--base) var(--ease);
}

.site-header.is-scrolled {
    background: rgba(0, 0, 0, 0.78);
    border-bottom-color: var(--line);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 76px;
    transition: height var(--base) var(--ease);
}

.is-scrolled .nav {
    height: 62px;
}

.nav-logo img {
    height: 46px;
    width: auto;
    transition: height var(--base) var(--ease), opacity var(--fast) var(--ease);
}

.is-scrolled .nav-logo img {
    height: 38px;
}

.nav-logo:hover img {
    opacity: 0.85;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    margin-left: auto;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--fast) var(--ease);
}

.nav-links a:hover {
    color: var(--fg);
}

/* ==================== Phone frame ==================== */
/* Drawn in CSS so any screenshot drops in; the island sits over the real status bar */
.phone {
    position: relative;
    width: 300px;
    max-width: 100%;
    aspect-ratio: 640 / 1387;
    padding: 9px;
    border-radius: 50px;
    background: linear-gradient(150deg, #2C2D33, #0E0E11 60%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.09),
                0 0 0 1px rgba(0, 0, 0, 0.8),
                0 40px 80px -24px rgba(0, 0, 0, 0.9);
}

.phone::after {
    content: "";
    position: absolute;
    top: calc(9px + 1.6%);
    left: 50%;
    width: 29%;
    height: 3.3%;
    transform: translateX(-50%);
    border-radius: 999px;
    background: #000;
}

.phone > img,
.screen-stack {
    width: 100%;
    height: 100%;
    border-radius: 41px;
    object-fit: cover;
    object-position: top;
}

/* isolation + its own layer keep Safari from dropping the rounded clip while screens crossfade */
.screen-stack {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    transform: translateZ(0);
    background: #F5F6F8;
}

.screen-stack img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    opacity: 0;
    transition: opacity 450ms var(--ease);
}

.screen-stack img.is-current {
    opacity: 1;
}

/* ==================== Hero ==================== */
.hero {
    padding: clamp(48px, 7vw, 104px) 0 clamp(88px, 10vw, 144px);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: center;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
    padding: 7px 16px 7px 12px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    font-size: 0.8125rem;
    color: var(--muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

.hero h1 {
    margin-bottom: 28px;
}

.hero .lede {
    margin-bottom: 14px;
}

.hero-kicker {
    margin-bottom: 36px;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.375rem;
    color: var(--cream);
}

.hero-visual {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 620px;
}

.hero-visual::before {
    content: "";
    position: absolute;
    width: 70%;
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(closest-side, rgba(167, 139, 250, 0.2), transparent);
    filter: blur(20px);
}

.hero-visual .phone {
    width: min(300px, 72vw);
}

/* Hero content settles in once on load */
@media (prefers-reduced-motion: no-preference) {
    .hero-copy > * {
        animation: rise 800ms var(--ease-out) both;
        animation-delay: calc(var(--i, 0) * 80ms + 80ms);
    }

    .hero-visual .phone {
        animation: rise-far 1000ms var(--ease-out) 250ms both;
    }
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
}

@keyframes rise-far {
    from {
        opacity: 0;
        transform: translateY(32px);
    }
}

/* ==================== Principles strip ==================== */
.principles {
    padding: 22px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.principles ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 40px;
    list-style: none;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    color: var(--muted);
}

.principles li {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.principles li::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}

/* ==================== Cards ==================== */
.card {
    padding: clamp(24px, 3vw, 32px);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012));
    transition: border-color var(--base) var(--ease), transform var(--base) var(--ease);
}

.card:hover {
    border-color: rgba(167, 139, 250, 0.3);
    transform: translateY(-2px);
}

.card h3 {
    margin-bottom: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.card p {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--dim);
}

.card-tag {
    display: block;
    margin-bottom: 14px;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

/* ==================== Connect ==================== */
.connect-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: clamp(40px, 6vw, 88px);
    align-items: center;
}

/* min-width:0 so the phone swipe row can't stretch its grid column (and the intro text) past the screen */
.connect-grid > * {
    min-width: 0;
}

.connect-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.phone-pair {
    position: relative;
    height: 640px;
    max-width: 460px;
    width: 100%;
    margin: 0 auto;
}

.phone-pair .phone {
    position: absolute;
    width: min(270px, 62%);
}

.phone-pair .phone:first-child {
    left: 0;
    top: 56px;
    transform: rotate(-4deg);
}

.phone-pair .phone:last-child {
    right: 0;
    top: 0;
    transform: rotate(3deg);
}

/* ==================== Posts tour ==================== */
.tour {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 6vw, 96px);
}

.tour-visual {
    position: sticky;
    top: max(96px, calc(50vh - 330px));
    align-self: start;
    height: fit-content;
    display: grid;
    place-items: center;
}

.tour-step {
    min-height: 76vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: opacity 450ms var(--ease);
}

.js-loaded .tour-step:not(.is-active) {
    opacity: 0.32;
}

.tour-step h3 {
    margin: 22px 0 16px;
    font-size: clamp(2.25rem, 3.6vw, 3rem);
}

.tour-step p {
    max-width: 30em;
    color: var(--muted);
}

.lifespan-label {
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
}

.lifespan-track {
    max-width: 360px;
    height: 4px;
    margin-top: 12px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.lifespan-fill {
    height: 100%;
    transform: scaleX(var(--fill, 1));
    transform-origin: left;
    background: linear-gradient(90deg, var(--accent), #C4B5FD);
    transition: transform 1100ms var(--ease-out) 150ms;
}

.lifespan-fill.fades {
    background: linear-gradient(90deg, var(--accent) 40%, rgba(167, 139, 250, 0));
}

.lifespan-fill.forever {
    background: linear-gradient(90deg, var(--accent), var(--cream));
}

.js-loaded .tour-step:not(.is-active) .lifespan-fill {
    transform: scaleX(0);
}

.tour-inline {
    display: none;
}

.note {
    max-width: 640px;
    margin: clamp(56px, 7vw, 96px) auto 0;
    text-align: center;
    color: var(--muted);
}

.note-dim {
    margin-top: 12px;
    font-size: 0.9375rem;
    color: var(--dim);
}

/* ==================== Chats ==================== */
.chats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: center;
}

.prose p {
    margin-bottom: 18px;
    color: var(--muted);
}

.prose .emphasis {
    color: var(--fg);
    font-weight: 500;
}

.chat-visual {
    display: grid;
    gap: 28px;
    max-width: 420px;
    width: 100%;
    margin: 0 auto;
}

.shot-card {
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.9);
}

.cipher {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8125rem;
    color: var(--muted);
}

.cipher-node {
    padding: 8px 14px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    white-space: nowrap;
}

.cipher-line {
    flex: 1;
    display: grid;
    place-items: center;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(167, 139, 250, 0.7), transparent);
}

.cipher-text {
    padding: 3px 10px;
    background: var(--bg);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--accent);
    white-space: nowrap;
}

.cipher-caption {
    font-size: 0.8125rem;
    color: var(--dim);
    text-align: center;
}

/* ==================== Disclosures (backups, Map safety, founder, FAQ) ==================== */
.disclosure {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.02);
    transition: border-color var(--base) var(--ease);
}

.disclosure[open] {
    border-color: var(--line-strong);
}

/* Block + absolutely placed chevron: older Safari ignores display:flex on <summary> */
.disclosure summary {
    position: relative;
    display: block;
    padding: 18px 56px 18px 22px;
    font-weight: 500;
    list-style: none;
    cursor: pointer;
}

.disclosure summary::-webkit-details-marker {
    display: none;
}

.disclosure summary::after {
    content: "";
    position: absolute;
    right: 24px;
    top: 50%;
    width: 9px;
    height: 9px;
    margin-top: -7px;
    border-right: 1.5px solid var(--dim);
    border-bottom: 1.5px solid var(--dim);
    transform: rotate(45deg);
    transition: transform var(--base) var(--ease), margin-top var(--base) var(--ease);
}

.disclosure[open] summary::after {
    margin-top: -2px;
    transform: rotate(-135deg);
}

.disclosure-body {
    padding: 0 22px 22px;
    color: var(--muted);
}

.disclosure-body p + p {
    margin-top: 14px;
}

.prose .disclosure {
    margin: 26px 0;
}

/* ==================== What's missing ==================== */
.bento {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.bento .wide {
    grid-column: span 2;
}

/* .card .strike outranks .card h3 so the struck headings keep the serif */
.card .strike {
    position: relative;
    display: inline-block;
    margin-bottom: 10px;
    font-family: var(--serif);
    font-size: clamp(1.5rem, 2.2vw, 1.875rem);
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: 0;
}

.strike::after {
    content: "";
    position: absolute;
    left: -3%;
    right: -3%;
    top: 56%;
    height: 2px;
    background: var(--accent);
    transform-origin: left;
    transition: transform var(--slow) var(--ease-out);
    transition-delay: calc(var(--i, 0) * 70ms + 250ms);
}

/* ==================== Themes ==================== */
/* A slow carousel: every few seconds the next skin comes forward into the centre.
   Five fixed slots; script.js only rewrites each phone's data-slot. */
#themes {
    overflow: hidden;
}

.theme-fan {
    --w: clamp(170px, 17vw, 230px);
    position: relative;
    height: calc(var(--w) * 1387 / 640 + 72px);
    margin-top: 24px;
}

/* z-index transitions as an integer, so a phone moving to the centre passes in front
   halfway through the move instead of popping over its neighbour at the start */
.theme-fan .phone {
    position: absolute;
    top: 0;
    left: calc(50% - var(--w) / 2);
    width: var(--w);
    will-change: transform;
    transition: transform 1000ms cubic-bezier(0.65, 0, 0.35, 1),
                z-index 1000ms linear,
                opacity 450ms var(--ease);
}

/* Side phones dim through the screenshot's opacity (cheap in Safari, unlike filter) */
.theme-fan .phone img {
    transition: opacity 1000ms cubic-bezier(0.65, 0, 0.35, 1);
}

/* Leaving the far right: only opacity transitions, so the jump to the far left is instant and unseen */
.theme-fan .phone.is-wrapping {
    opacity: 0;
    transition: opacity 450ms var(--ease);
}

.theme-fan .phone[data-slot="0"] { transform: translate(-150%, 48px) rotate(-9deg) scale(0.86); z-index: 1; }
.theme-fan .phone[data-slot="1"] { transform: translate(-80%, 16px) rotate(-4.5deg) scale(0.93); z-index: 2; }
.theme-fan .phone[data-slot="2"] { transform: none; z-index: 3; }
.theme-fan .phone[data-slot="3"] { transform: translate(80%, 16px) rotate(4.5deg) scale(0.93); z-index: 2; }
.theme-fan .phone[data-slot="4"] { transform: translate(150%, 48px) rotate(9deg) scale(0.86); z-index: 1; }

/* Side phones are clickable — a click brings that skin to the centre (script.js) */
.theme-fan .phone:not([data-slot="2"]) {
    cursor: pointer;
}

.theme-fan .phone[data-slot="0"] img,
.theme-fan .phone[data-slot="4"] img { opacity: 0.55; }
.theme-fan .phone[data-slot="1"] img,
.theme-fan .phone[data-slot="3"] img { opacity: 0.8; }

/* ==================== Map ==================== */
.map-card {
    padding: clamp(32px, 5vw, 72px);
    border: 1px solid var(--line);
    border-radius: 36px;
    background: radial-gradient(800px 420px at 85% 0%, rgba(167, 139, 250, 0.09), transparent 60%), var(--surface);
}

.badge {
    display: inline-flex;
    padding: 6px 14px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    font-size: 0.8125rem;
    color: var(--muted);
}

.map-card .section-head {
    margin-bottom: 40px;
}

.map-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}

.check-list {
    display: grid;
    gap: 14px;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 28px;
}

.check-list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 0.45em;
    width: 11px;
    height: 6px;
    border-left: 1.5px solid var(--accent);
    border-bottom: 1.5px solid var(--accent);
    transform: rotate(-45deg);
}

.check-list strong {
    color: var(--fg);
    font-weight: 500;
}

.map-card .aside-line {
    text-align: left;
    margin-top: 28px;
}

/* ==================== Privacy orbit ==================== */
/* Six guarantees on a slowly turning ring (script.js places them). The explanation always
   appears in the fixed centre, so nothing moves while it's read. Below 961px — and without
   JS — it's the heading, a row of pills, then the explanation(s) underneath. */
.orbit {
    display: grid;
    gap: 32px;
    justify-items: center;
    text-align: center;
}

.orbit-path,
.orbit-toggle,
.orbit-toggle[hidden] {
    display: none;
}

.orbit-centre {
    display: contents;
}

.orbit-head {
    order: 1;
}

/* Same h2 scale as every other section heading */
.orbit-head .display {
    margin-top: 16px;
}

.orbit-nodes {
    order: 2;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    max-width: 640px;
    list-style: none;
}

.orbit-node {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    background: var(--surface);
    color: var(--muted);
    font: 500 0.875rem/1.2 var(--sans);
    cursor: pointer;
    transition: border-color var(--base) var(--ease),
                background-color var(--base) var(--ease),
                color var(--base) var(--ease),
                box-shadow var(--base) var(--ease),
                transform var(--base) var(--ease);
}

.orbit-node svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    fill: none;
    stroke: var(--accent);
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.orbit-node:hover,
.orbit-node.is-selected {
    border-color: var(--accent);
    background: #17131F;
    color: var(--fg);
    box-shadow: 0 0 0 5px var(--accent-soft);
}

/* grid gap only spaces visible children, so hidden explanations leave no gaps */
.orbit-readout {
    order: 3;
    display: grid;
    gap: 28px;
    width: 100%;
    max-width: 560px;
    min-height: 170px;
    align-content: start;
}

.orbit-intro {
    color: var(--dim);
}

.orbit-detail h3 {
    margin-bottom: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.orbit-detail p {
    color: var(--muted);
}

@media (prefers-reduced-motion: no-preference) {
    .js-loaded .orbit-detail:not([hidden]),
    .js-loaded .orbit-intro:not([hidden]) {
        animation: rise 450ms var(--ease-out) both;
    }
}

/* Ring layout — desktop only, and only once JS is there to place the nodes */
@media (min-width: 961px) {
    .js-loaded .orbit {
        position: relative;
        display: block;
        max-width: 1180px;
        height: 900px;
        margin: 0 auto;
    }

    .js-loaded .orbit-path {
        display: block;
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        overflow: visible;
    }

    .js-loaded .orbit-path ellipse {
        fill: none;
        stroke: var(--line-strong);
        stroke-width: 1;
    }

    .js-loaded .orbit-centre {
        position: absolute;
        top: 50%;
        left: 50%;
        display: grid;
        gap: 28px;
        justify-items: center;
        width: min(560px, 50%);
        transform: translate(-50%, -50%);
    }

    .js-loaded .orbit-readout {
        min-height: 150px;
    }

    .js-loaded .orbit-nodes {
        display: block;
        max-width: none;
    }

    .js-loaded .orbit-nodes li {
        position: absolute;
        top: 0;
        left: 0;
        will-change: transform;
    }

    .js-loaded .orbit-node {
        flex-direction: column;
        justify-content: center;
        /* App-icon shape — echoes the ENSO icon and holds the label better than a circle */
        gap: 10px;
        width: 168px;
        height: 124px;
        padding: 0 16px;
        border-radius: 36px;
        font-size: 0.9375rem;
    }

    .js-loaded .orbit-node svg {
        width: 26px;
        height: 26px;
    }

    .js-loaded .orbit-node:hover,
    .js-loaded .orbit-node.is-selected {
        transform: scale(1.06);
    }

    .js-loaded .orbit-toggle {
        display: inline-flex;
        position: absolute;
        right: 0;
        bottom: 0;
        padding: 6px 14px;
        border: 1px solid var(--line);
        border-radius: 999px;
        background: transparent;
        color: var(--dim);
        font: 500 0.8125rem/1.2 var(--sans);
        cursor: pointer;
        transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
    }

    .js-loaded .orbit-toggle:hover {
        color: var(--fg);
        border-color: var(--line-strong);
    }

    .js-loaded .orbit-toggle[hidden] {
        display: none;
    }
}

/* Smaller laptops: a slightly smaller tile so the ring still clears the centre text */
@media (min-width: 961px) and (max-width: 1199px) {
    .js-loaded .orbit-node {
        width: 144px;
        height: 108px;
        border-radius: 30px;
        font-size: 0.875rem;
    }

    .js-loaded .orbit-node svg {
        width: 22px;
        height: 22px;
    }
}

/* ==================== Founder ==================== */
.founder {
    background: linear-gradient(180deg, transparent, rgba(239, 231, 214, 0.025), transparent);
}

.founder-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: clamp(40px, 7vw, 120px);
    align-items: start;
}

.pullquote {
    position: sticky;
    top: 120px;
}

.pullquote blockquote {
    font-family: var(--serif);
    font-size: clamp(2rem, 3.4vw, 3rem);
    line-height: 1.15;
    color: var(--cream);
}

.pullquote .eyebrow {
    margin-bottom: 24px;
}

.founder-note h2 {
    margin-bottom: 32px;
}

.founder-note p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--muted);
}

.read-more summary {
    display: inline-block;
    color: var(--accent);
    font-weight: 500;
    list-style: none;
    cursor: pointer;
}

.read-more summary::-webkit-details-marker {
    display: none;
}

.read-more summary::after {
    content: "→";
    display: inline-block;
    margin-left: 8px;
    transition: transform var(--fast) var(--ease);
}

.read-more summary:hover::after {
    transform: translateX(3px);
}

/* The note only opens — once expanded, the link has done its job */
.read-more[open] summary {
    display: none;
}

.signature {
    margin-top: 32px;
    color: var(--fg) !important;
    font-weight: 500;
}

.signature span {
    display: block;
    font-weight: 400;
    font-size: 0.9375rem;
    color: var(--dim);
}

/* ==================== Download ==================== */
.download-card {
    position: relative;
    overflow: hidden;
    padding: clamp(64px, 9vw, 120px) var(--gutter);
    border: 1px solid var(--line);
    border-radius: 40px;
    text-align: center;
    background: radial-gradient(720px 380px at 50% 0%, rgba(167, 139, 250, 0.14), transparent 70%), var(--surface);
}

.download-card h2 {
    margin: 16px 0 20px;
}

.download-card .lede {
    margin: 0 auto 36px;
}

.download-card .store-actions {
    justify-content: center;
}

.early-note {
    max-width: 520px;
    margin: 40px auto 0;
    font-size: 0.9375rem;
    color: var(--dim);
}

.early-note strong {
    color: var(--fg);
    font-weight: 500;
}

.early-note a {
    color: var(--accent);
    text-decoration: none;
}

.early-note a:hover {
    text-decoration: underline;
}

/* ==================== FAQ ==================== */
.faq-list {
    display: grid;
    gap: 12px;
    max-width: 780px;
    margin: 0 auto;
}

.faq-list a {
    color: var(--accent);
}

/* ==================== Footer ==================== */
.site-footer {
    padding: 72px 0 40px;
    border-top: 1px solid var(--line);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 40px;
}

.footer-brand img {
    height: 48px;
    width: auto;
    margin-bottom: 18px;
}

.footer-brand p {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--cream);
}

.footer-col h2 {
    margin-bottom: 16px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dim);
}

.footer-col ul {
    display: grid;
    gap: 10px;
    list-style: none;
}

.footer-col a,
.footer-col .soon {
    font-size: 0.9375rem;
    color: var(--muted);
    text-decoration: none;
    transition: color var(--fast) var(--ease);
}

.footer-col a:hover {
    color: var(--fg);
}

.footer-col .soon {
    color: var(--dim);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    margin-top: 56px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    font-size: 0.8125rem;
    color: var(--dim);
}

/* ==================== Scroll reveals ==================== */
.animate-on-scroll {
    transition: opacity var(--slow) var(--ease-out), transform var(--slow) var(--ease-out);
}

@media (prefers-reduced-motion: no-preference) {
    .js-loaded .animate-on-scroll:not(.animated) {
        opacity: 0;
        transform: translateY(16px);
    }

    /* Children of a stagger group rise one after another (--i set inline) */
    .js-loaded .animate-on-scroll.animated .stagger > * {
        animation: rise 650ms var(--ease-out) backwards;
        animation-delay: calc(var(--i, 0) * 60ms);
    }

    .js-loaded .animate-on-scroll:not(.animated) .strike::after {
        transform: scaleX(0);
    }
}

/* ==================== Responsive ==================== */
@media (max-width: 960px) {
    .nav-links {
        display: none;
    }

    .hero-grid,
    .connect-grid,
    .chats-grid,
    .founder-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        text-align: center;
    }

    .hero .lede {
        margin-left: auto;
        margin-right: auto;
    }

    .hero .store-actions {
        justify-content: center;
    }

    .hero-visual {
        min-height: 540px;
    }

    .phone-pair {
        height: 560px;
    }

    /* Tour: no pinned phone — each step carries its own screenshot */
    .tour {
        grid-template-columns: 1fr;
    }

    .tour-visual {
        display: none;
    }

    .tour-step {
        min-height: 0;
        margin-bottom: 88px;
    }

    .tour-step:last-child {
        margin-bottom: 0;
    }

    .js-loaded .tour-step:not(.is-active) {
        opacity: 1;
    }

    .js-loaded .tour-step:not(.is-active) .lifespan-fill {
        transform: scaleX(var(--fill, 1));
    }

    .tour-inline {
        display: block;
        width: 250px;
        margin: 40px auto 0;
    }

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

    .pullquote {
        position: static;
    }

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

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 700px) {
    /* Theme carousel becomes a swipeable row (script.js stops the loop at this width) */
    .theme-fan {
        display: flex;
        gap: 16px;
        height: auto;
        margin: 0 calc(var(--gutter) * -1);
        padding: 8px var(--gutter) 24px;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
    }

    .theme-fan::-webkit-scrollbar {
        display: none;
    }

    .theme-fan .phone[data-slot] {
        position: static;
        flex-shrink: 0;
        width: 200px;
        transform: none;
        opacity: 1;
        cursor: auto;
        scroll-snap-align: center;
    }

    .theme-fan .phone[data-slot] img {
        opacity: 1;
    }
}

@media (max-width: 560px) {
    .connect-cards,
    .map-cards,
    .bento {
        grid-template-columns: 1fr;
    }

    .bento .wide {
        grid-column: auto;
    }

    .phone-pair {
        height: 470px;
    }

    .hero-visual {
        min-height: 480px;
    }

    /* Badge and "coming soon" pill stack and centre — the badge keeps its own proportions */
    .store-actions {
        flex-direction: column;
        align-items: center;
    }

    .cipher {
        gap: 8px;
        font-size: 0.75rem;
    }

    .cipher-text {
        display: none;
    }
}

/* ==================== Phones: the condensed page ====================
   Same content, folded for a small screen: roughly one idea per screen, swipe rows instead of
   stacks, long reads behind "more", and motion where the desktop has it. Tablet and desktop
   layouts are untouched. */
.phone-only,
.tour-tabs,
.app-bar {
    display: none;
}

@media (max-width: 700px) {
    :root {
        --section: 76px;
    }

    .phone-only {
        display: block;
    }

    .hide-phone {
        display: none !important;
    }

    .section-head {
        margin-bottom: 36px;
    }

    .tagline {
        margin-top: 48px;
        font-size: 1.5rem;
    }

    .aside-line {
        font-size: 0.9375rem;
    }

    /* Hero: a smaller phone under the buttons */
    .hero {
        padding-bottom: 56px;
    }

    .hero-visual {
        min-height: 0;
        margin-top: 8px;
    }

    .hero-visual .phone {
        width: 240px;
    }

    /* Principles: one swipeable line instead of three wrapped ones */
    .principles ul {
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: 28px;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .principles ul::-webkit-scrollbar {
        display: none;
    }

    .principles li {
        white-space: nowrap;
    }

    /* How you connect: the four cards become a swipe row (the next card peeks in); one phone */
    .connect-cards {
        display: flex;
        gap: 12px;
        margin: 0 calc(var(--gutter) * -1);
        padding: 4px var(--gutter) 8px;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
    }

    .connect-cards::-webkit-scrollbar {
        display: none;
    }

    .connect-cards .card {
        flex: 0 0 80%;
        scroll-snap-align: center;
    }

    .phone-pair {
        display: flex;
        justify-content: center;
        height: auto;
        margin-top: 12px;
    }

    .phone-pair .phone:first-child {
        display: none;
    }

    .phone-pair .phone:last-child {
        position: static;
        width: 230px;
        transform: none;
    }

    /* Posting: a Stories | Moments | Memories switch over one phone, instead of three stacked phones */
    .js-loaded .tour-tabs {
        display: flex;
        gap: 4px;
        width: fit-content;
        margin: 0 auto 28px;
        padding: 4px;
        border: 1px solid var(--line-strong);
        border-radius: 999px;
    }

    .tour-tab {
        min-height: 40px;
        padding: 0 18px;
        border: 0;
        border-radius: 999px;
        background: transparent;
        color: var(--muted);
        font: 500 0.9375rem/1 var(--sans);
        cursor: pointer;
        transition: background-color var(--base) var(--ease), color var(--base) var(--ease);
    }

    .tour-tab.is-active {
        background: var(--accent);
        color: #0A0A0B;
    }

    .js-loaded .tour-visual {
        display: grid;
        position: static;
        margin-bottom: 28px;
    }

    .js-loaded .tour-visual .phone {
        width: 230px;
    }

    .js-loaded .tour-inline,
    .js-loaded .tour-step:not(.is-active) {
        display: none;
    }

    .js-loaded .tour-step {
        margin: 0;
        text-align: center;
    }

    .js-loaded .tour-step p {
        margin: 0 auto;
    }

    .js-loaded .lifespan-track {
        margin: 12px auto 0;
    }

    .tour-step h3 {
        margin: 16px 0 10px;
    }

    .note {
        margin-top: 40px;
    }

    .note-dim,
    .cipher-caption {
        display: none;
    }

    /* What's missing: a compact two-column grid of the crossed-out words */
    .bento {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .bento .wide {
        grid-column: auto;
    }

    .bento .card {
        padding: 18px 12px;
        text-align: center;
    }

    .bento .card p {
        display: none;
    }

    .card .strike {
        margin-bottom: 0;
        font-size: 1.25rem;
    }

    /* Map: a teaser card — the Circles/Drops pair side by side, safety still in its fold-out */
    .map-card {
        padding: 28px 20px;
        border-radius: 28px;
    }

    .map-cards {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .map-cards .card {
        padding: 18px 14px;
    }

    /* Privacy pills: room for the longest explanation, so the page doesn't jump as they cycle */
    .orbit-readout {
        min-height: 210px;
    }

    .pullquote blockquote {
        font-size: 1.75rem;
    }

    /* Leave room so the Get-the-app bar never covers the last footer line */
    .site-footer {
        padding-bottom: 112px;
    }

    /* Get-the-app bar: slides up between the hero and the download section (script.js) */
    .app-bar {
        position: fixed;
        left: 12px;
        right: 12px;
        bottom: calc(12px + env(safe-area-inset-bottom, 0px));
        z-index: 60;
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 10px 8px 10px 12px;
        border: 1px solid var(--line-strong);
        border-radius: 22px;
        background: rgba(18, 20, 24, 0.86);
        backdrop-filter: blur(20px) saturate(1.6);
        -webkit-backdrop-filter: blur(20px) saturate(1.6);
        box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.8);
        opacity: 0;
        visibility: hidden;
        transform: translateY(calc(100% + 24px));
        transition: transform 450ms var(--ease-out), opacity 300ms var(--ease), visibility 0s linear 450ms;
    }

    .app-bar.is-visible {
        opacity: 1;
        visibility: visible;
        transform: none;
        transition-delay: 0s;
    }

    .app-bar[hidden] {
        display: none;
    }

    .app-bar img {
        flex-shrink: 0;
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }

    .app-bar-text {
        flex: 1;
        min-width: 0;
        line-height: 1.25;
    }

    .app-bar-text strong {
        display: block;
        font-size: 0.9375rem;
        font-weight: 600;
    }

    .app-bar-text span {
        font-size: 0.8125rem;
        color: var(--dim);
    }

    .app-bar .btn {
        min-height: 38px;
        padding: 0 20px;
        font-size: 0.9375rem;
    }

    .app-bar-close {
        width: 32px;
        height: 32px;
        border: 0;
        border-radius: 50%;
        background: transparent;
        color: var(--dim);
        font-size: 1.375rem;
        line-height: 1;
        cursor: pointer;
    }
}

@media (max-width: 700px) and (prefers-reduced-transparency: reduce) {
    .app-bar {
        background: #121418;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}

/* Large desktop screens: a little more width and scale so the page doesn't float in the middle */
@media (min-width: 1600px) {
    :root {
        --max: 1320px;
    }

    h1.display {
        font-size: 6.75rem;
    }

    .hero-visual {
        min-height: 720px;
    }

    .hero-visual .phone {
        width: 340px;
    }
}

/* ==================== Preferences ==================== */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}

@media (prefers-reduced-transparency: reduce) {
    .site-header,
    .site-header.is-scrolled {
        background: rgba(0, 0, 0, 0.96);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}

@media (prefers-contrast: more) {
    :root {
        --muted: #E4E6EA;
        --dim: #B9BEC9;
        --line: rgba(255, 255, 255, 0.3);
        --line-strong: rgba(255, 255, 255, 0.45);
    }
}