:root {
    --ink: #1a1814;
    --ink-soft: #3f3b35;
    --muted: #716b61;
    --paper: #f7f4ee;
    --paper-deep: #eeebe4;
    --paper-line: #d9d3ca;
    --white: #ffffff;
    --aubergine: #211d2d;
    --aubergine-soft: #2c273b;
    --violet: #5b4dff;
    --violet-deep: #493cf0;
    --violet-soft: #e9e6ff;
    --lavender: #aaa0ff;
    --green: #168c6f;
    --shadow: 0 24px 70px rgb(34 29 40 / 14%);
    --shadow-tight: 0 12px 32px rgb(34 29 40 / 12%);
    --max: 1240px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
        "Segoe UI", sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.is-locked {
    overflow: hidden;
}

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

button,
input {
    font: inherit;
}

button {
    cursor: pointer;
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.wrap {
    width: min(var(--max), calc(100% - 64px));
    margin-inline: auto;
}

.site-header {
    position: absolute;
    z-index: 10;
    inset: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(var(--max), calc(100% - 64px));
    margin-inline: auto;
    padding: 28px 0;
}

.site-header--light {
    color: var(--ink);
}

.site-header--dark {
    color: var(--white);
}

.site-header__brand {
    width: 136px;
}

.site-header__mark {
    display: none;
    width: 32px;
}

.site-header__nav {
    display: flex;
    align-items: center;
    gap: 28px;
    color: currentColor;
    font-size: 13px;
    font-weight: 650;
    letter-spacing: -0.01em;
}

.site-header__nav a:not(.button) {
    opacity: 0.72;
    transition: opacity 180ms ease;
}

.site-header__nav a:not(.button):hover,
.site-header__nav a:not(.button):focus-visible {
    opacity: 1;
}

.site-header__nav .button {
    margin-left: 4px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 0 18px;
    color: var(--white);
    background: var(--violet);
    box-shadow: 0 10px 22px rgb(91 77 255 / 20%);
    font-size: 14px;
    font-weight: 750;
    letter-spacing: -0.015em;
    transition: transform 180ms var(--ease), background 180ms ease,
        box-shadow 180ms ease;
}

.button:hover,
.button:focus-visible {
    background: var(--violet-deep);
    box-shadow: 0 14px 28px rgb(91 77 255 / 28%);
    transform: translateY(-2px);
}

.button:focus-visible,
input:focus-visible,
a:focus-visible {
    outline: 3px solid rgb(91 77 255 / 35%);
    outline-offset: 3px;
}

.button--outline {
    border-color: currentColor;
    color: currentColor;
    background: transparent;
    box-shadow: none;
}

.button--outline:hover,
.button--outline:focus-visible {
    color: var(--white);
    background: var(--violet);
    box-shadow: none;
}

.button__arrow {
    font-size: 18px;
    line-height: 0;
}

.eyebrow {
    margin: 0 0 18px;
    color: var(--violet);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.17em;
    line-height: 1.2;
    text-transform: uppercase;
}

.eyebrow--light {
    color: var(--lavender);
}

.display {
    margin: 0;
    font-size: clamp(3.25rem, 6.5vw, 6.6rem);
    font-weight: 730;
    letter-spacing: -0.075em;
    line-height: 0.94;
}

.display em {
    color: var(--violet);
    font-style: normal;
}

.lede {
    margin: 26px 0 0;
    max-width: 550px;
    color: var(--muted);
    font-size: clamp(1.04rem, 1.3vw, 1.25rem);
    letter-spacing: -0.02em;
    line-height: 1.55;
}

.lede--light {
    color: rgb(255 255 255 / 68%);
}

.signal-stance {
    max-width: 440px;
    margin: 24px 0 0;
    font-size: 16px;
    letter-spacing: -0.025em;
    line-height: 1.35;
}

.signal-stance--light {
    color: var(--white);
}

.join-form {
    display: flex;
    align-items: stretch;
    width: min(100%, 480px);
    margin-top: 32px;
}

.join-form input {
    min-width: 0;
    flex: 1;
    height: 54px;
    border: 1px solid var(--paper-line);
    border-radius: 8px 0 0 8px;
    padding: 0 16px;
    color: var(--ink);
    background: var(--white);
    outline: none;
}

.join-form input::placeholder {
    color: #a19b91;
}

.join-form input:focus {
    border-color: var(--violet);
    box-shadow: 0 0 0 3px rgb(91 77 255 / 14%);
}

.join-form .button {
    min-width: 154px;
    border-radius: 0 8px 8px 0;
    box-shadow: none;
}

.join-form--dark input {
    border-color: rgb(255 255 255 / 16%);
    color: var(--white);
    background: rgb(255 255 255 / 8%);
}

.join-form--dark input::placeholder {
    color: rgb(255 255 255 / 48%);
}

.join-form--dark input:focus {
    border-color: var(--lavender);
    box-shadow: 0 0 0 3px rgb(170 160 255 / 20%);
}

.field-note {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
}

.field-note--light {
    color: rgb(255 255 255 / 48%);
}

.form-feedback {
    min-height: 22px;
    margin: 12px 0 0;
    color: var(--green);
    font-size: 13px;
    font-weight: 650;
}

.form-feedback:empty {
    min-height: 0;
    margin-top: 0;
}

.form-feedback--light {
    color: #a7f4da;
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 750ms var(--ease), transform 750ms var(--ease);
}

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

.reveal-delay-1 {
    transition-delay: 90ms;
}

.reveal-delay-2 {
    transition-delay: 180ms;
}

.reveal-delay-3 {
    transition-delay: 270ms;
}

.section-rule {
    border-top: 1px solid var(--paper-line);
}

.section-kicker {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.section-kicker span:last-child {
    color: var(--ink);
    letter-spacing: 0.04em;
}

.fine-print {
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
}

.fine-print--light {
    color: rgb(255 255 255 / 45%);
}

/* Shared product visual primitives */
.product-window {
    overflow: hidden;
    border: 1px solid rgb(32 29 37 / 15%);
    border-radius: 15px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.product-window__bar {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 46px;
    padding: 0 18px;
    border-bottom: 1px solid #e8e4df;
    color: #767067;
    font-size: 11px;
    font-weight: 700;
}

.product-window__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #d6d0c7;
}

.product-window__dot--active {
    margin-left: auto;
    background: #31ad80;
}

.inbox-panel {
    padding: 18px;
}

.inbox-panel__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    color: #2d2a26;
    font-size: 13px;
    font-weight: 750;
}

.inbox-panel__top small {
    color: #8a8378;
    font-size: 11px;
    font-weight: 550;
}

.inbox-row {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr) auto;
    align-items: center;
    gap: 11px;
    padding: 14px 12px;
    border-top: 1px solid #ece9e4;
}

.inbox-row:first-of-type {
    border-top: 0;
}

.inbox-row__avatar {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    color: #565049;
    background: #e8e4de;
    font-size: 10px;
    font-weight: 800;
}

.inbox-row__name {
    color: #2d2a26;
    font-size: 12px;
    font-weight: 750;
}

.inbox-row__preview {
    overflow: hidden;
    margin-top: 4px;
    color: #8c857b;
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.inbox-row__status {
    color: var(--green);
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
}

.workflow-line {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.workflow-line::before {
    position: absolute;
    top: 19px;
    right: 17%;
    left: 17%;
    height: 1px;
    background: var(--paper-line);
    content: "";
}

.workflow-step {
    position: relative;
    z-index: 1;
}

.workflow-step__number {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--paper-line);
    border-radius: 50%;
    color: var(--violet);
    background: var(--paper);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
}

.workflow-step h3 {
    margin: 22px 0 8px;
    font-size: 18px;
    letter-spacing: -0.03em;
}

.workflow-step p {
    max-width: 250px;
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
}

/* Prototype 01 — Signal */
.page-signal {
    color: var(--white);
    background: var(--aubergine);
}

.signal-hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 100svh;
    overflow: hidden;
    background:
        radial-gradient(circle at 82% 37%, rgb(103 87 255 / 20%), transparent 30%),
        linear-gradient(117deg, #211d2d 0%, #211d2d 51%, #2b263b 100%);
}

.signal-hero::after {
    position: absolute;
    inset: auto 0 0;
    height: 1px;
    background: rgb(255 255 255 / 10%);
    content: "";
}

.signal-hero__grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(440px, 0.92fr);
    align-items: center;
    gap: 5vw;
    padding-top: 94px;
    padding-bottom: 68px;
}

.signal-copy {
    max-width: 620px;
}

.signal-copy .display {
    max-width: 610px;
    color: var(--white);
    font-size: clamp(3.3rem, 6.2vw, 6.1rem);
    letter-spacing: -0.055em;
}

.signal-copy .display em {
    color: var(--lavender);
}

.signal-stage {
    position: relative;
    min-height: 530px;
}

.signal-stage::before,
.signal-stage::after {
    position: absolute;
    border: 1px solid rgb(170 160 255 / 18%);
    border-radius: 50%;
    content: "";
}

.signal-stage::before {
    top: 7%;
    right: -5%;
    width: 540px;
    height: 540px;
}

.signal-stage::after {
    top: 20%;
    right: 8%;
    width: 375px;
    height: 375px;
    border-style: dashed;
    opacity: 0.75;
}

.signal-orbit-dot {
    position: absolute;
    z-index: 2;
    top: 11%;
    right: 11%;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--lavender);
    box-shadow: 0 0 0 8px rgb(170 160 255 / 12%), 0 0 30px rgb(170 160 255 / 60%);
}

.signal-console {
    position: absolute;
    z-index: 3;
    top: 16%;
    right: 0;
    width: min(100%, 590px);
    transform: rotate(2.5deg);
    transition: transform 220ms var(--ease);
}

.signal-console:hover {
    transform: rotate(0deg) translateY(-7px);
}

.signal-console .product-window__bar {
    color: #807a98;
    background: #f6f4fa;
}

.signal-console .product-window__bar strong {
    color: #2c2835;
}

.signal-console .inbox-panel {
    background: #ffffff;
}

.signal-console__banner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 18px;
    margin: 2px 0 16px;
    border-radius: 10px;
    padding: 17px 18px;
    color: #302c47;
    background: #e8e4ff;
}

.signal-console__banner strong {
    display: block;
    font-size: 16px;
    letter-spacing: -0.03em;
}

.signal-console__banner span {
    display: block;
    margin-top: 4px;
    color: #7b7397;
    font-size: 11px;
}

.signal-console__count {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    color: var(--white);
    background: var(--violet);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
}

.signal-proof {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
    border-top: 1px solid rgb(255 255 255 / 12%);
    padding-top: 19px;
}

.signal-proof span {
    color: rgb(255 255 255 / 56%);
    font-size: 11px;
}

.signal-proof b {
    display: block;
    margin-bottom: 6px;
    color: #b8adff;
    font-family: var(--font-mono);
    font-size: 12px;
}

/* Prototype 02 — Ledger */
.ledger-hero {
    min-height: 100svh;
    padding: 168px 0 96px;
    background: var(--paper);
}

.ledger-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(470px, 1.18fr);
    align-items: center;
    gap: 8vw;
}

.ledger-copy .display {
    max-width: 610px;
    font-size: clamp(3.25rem, 6.6vw, 6.5rem);
}

.ledger-copy .display span {
    display: block;
}

.ledger-copy .lede {
    max-width: 470px;
}

.ledger-copy .join-form {
    margin-top: 34px;
}

.ledger-stage {
    position: relative;
}

.ledger-stage__label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.ledger-stage__frame {
    position: relative;
    overflow: hidden;
    border: 1px solid #d4cec4;
    border-radius: 18px;
    padding: 16px;
    background: #ebe7df;
    box-shadow: var(--shadow);
    transform: rotate(1.2deg);
    transition: transform 240ms var(--ease), box-shadow 240ms ease;
}

.ledger-stage__frame:hover {
    box-shadow: 0 30px 84px rgb(34 29 40 / 18%);
    transform: rotate(0deg) translateY(-6px);
}

.ledger-stage__frame::before {
    position: absolute;
    top: 30px;
    right: -64px;
    width: 190px;
    height: 190px;
    border: 1px solid rgb(91 77 255 / 22%);
    border-radius: 50%;
    content: "";
}

.ledger-stage__frame img {
    position: relative;
    z-index: 1;
    width: 100%;
    border: 1px solid #d4cfc7;
    border-radius: 12px;
}

.ledger-stage__caption {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    color: var(--muted);
    font-size: 12px;
}

.ledger-stage__caption::before {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    content: "";
}

.ledger-steps {
    padding: 104px 0 116px;
    background: #ece9e2;
}

.ledger-steps .section-kicker {
    margin-bottom: 58px;
}

.ledger-steps h2 {
    max-width: 760px;
    margin: 0 0 66px;
    font-size: clamp(2.3rem, 4.7vw, 5rem);
    letter-spacing: -0.07em;
    line-height: 0.98;
}

.ledger-final {
    padding: 116px 0;
    color: var(--white);
    background: var(--aubergine);
}

.ledger-final__grid {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    align-items: end;
    gap: 8vw;
}

.ledger-final h2 {
    max-width: 650px;
    margin: 0;
    font-size: clamp(2.6rem, 5vw, 5.1rem);
    letter-spacing: -0.075em;
    line-height: 0.95;
}

.ledger-final .join-form {
    margin-top: 0;
}

/* Prototype 03 — Flight plan */
.page-flight {
    color: var(--white);
    background: #15131d;
}

.flight-hero {
    position: relative;
    display: flex;
    min-height: 100svh;
    overflow: hidden;
    background:
        linear-gradient(rgb(91 77 255 / 7%) 1px, transparent 1px),
        linear-gradient(90deg, rgb(91 77 255 / 7%) 1px, transparent 1px),
        #15131d;
    background-size: 68px 68px;
}

.flight-hero::before {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 74% 42%, rgb(91 77 255 / 31%), transparent 26%);
    content: "";
    pointer-events: none;
}

.flight-hero__grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
    align-items: center;
    gap: 8vw;
    padding-top: 118px;
    padding-bottom: 70px;
}

.flight-copy .display {
    max-width: 680px;
    color: var(--white);
    font-size: clamp(3.1rem, 6.2vw, 6.3rem);
}

.flight-copy .display em {
    color: var(--lavender);
}

.flight-map {
    position: relative;
    min-height: 530px;
}

.flight-map__ring {
    position: absolute;
    border: 1px solid rgb(170 160 255 / 24%);
    border-radius: 50%;
}

.flight-map__ring--one {
    top: 4%;
    right: 2%;
    width: 510px;
    height: 510px;
}

.flight-map__ring--two {
    top: 16%;
    right: 14%;
    width: 350px;
    height: 350px;
    border-style: dashed;
}

.flight-map__ring--three {
    top: 29%;
    right: 27%;
    width: 220px;
    height: 220px;
    border-color: rgb(170 160 255 / 46%);
}

.flight-map__path {
    position: absolute;
    z-index: 2;
    top: 9%;
    right: 11%;
    width: 455px;
    height: 400px;
}

.flight-map__node {
    position: absolute;
    z-index: 3;
    display: grid;
    place-items: center;
    width: 45px;
    height: 45px;
    border: 1px solid rgb(255 255 255 / 24%);
    border-radius: 50%;
    color: var(--white);
    background: #2a253a;
    box-shadow: 0 0 0 9px rgb(91 77 255 / 11%);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
}

.flight-map__node--one {
    top: 11%;
    right: 13%;
}

.flight-map__node--two {
    top: 40%;
    right: 54%;
}

.flight-map__node--three {
    right: 5%;
    bottom: 15%;
}

.flight-map__node--active {
    border-color: var(--lavender);
    color: #1b1725;
    background: var(--lavender);
}

.flight-map__annotation {
    position: absolute;
    z-index: 4;
    right: 0;
    bottom: 5%;
    width: 210px;
    border-left: 1px solid var(--lavender);
    padding-left: 14px;
}

.flight-map__annotation strong {
    display: block;
    color: var(--white);
    font-size: 13px;
}

.flight-map__annotation span {
    display: block;
    margin-top: 5px;
    color: rgb(255 255 255 / 54%);
    font-size: 11px;
    line-height: 1.45;
}

.flight-specs {
    border-top: 1px solid rgb(255 255 255 / 14%);
    padding: 28px 0 36px;
}

.flight-specs__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.flight-spec {
    padding-right: 22px;
    border-right: 1px solid rgb(255 255 255 / 13%);
}

.flight-spec:last-child {
    border-right: 0;
}

.flight-spec__value {
    display: block;
    color: var(--lavender);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.flight-spec__label {
    display: block;
    margin-top: 7px;
    color: rgb(255 255 255 / 57%);
    font-size: 12px;
}

.flight-final {
    padding: 112px 0 124px;
    background: var(--paper);
    color: var(--ink);
}

.flight-final__grid {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    align-items: end;
    gap: 8vw;
}

.flight-final h2 {
    max-width: 660px;
    margin: 0;
    font-size: clamp(2.55rem, 5.2vw, 5.2rem);
    letter-spacing: -0.075em;
    line-height: 0.95;
}

.flight-final .join-form {
    margin-top: 0;
}

/* Prototype 04 — Inbox */
.inbox-hero {
    min-height: 100svh;
    padding: 170px 0 90px;
    background: var(--paper);
}

.inbox-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(450px, 1.1fr);
    align-items: center;
    gap: 7vw;
}

.inbox-copy .display {
    max-width: 620px;
    font-size: clamp(3.2rem, 6.4vw, 6.4rem);
}

.inbox-copy .display em {
    color: var(--violet);
}

.inbox-visual {
    position: relative;
}

.inbox-visual::before {
    position: absolute;
    z-index: 0;
    top: 11%;
    right: -6%;
    width: 78%;
    height: 78%;
    border-radius: 50%;
    background: var(--violet-soft);
    content: "";
}

.inbox-visual__window {
    position: relative;
    z-index: 1;
    overflow: hidden;
    border: 1px solid #d1cbc1;
    border-radius: 16px;
    background: var(--white);
    box-shadow: var(--shadow);
    transform: rotate(-1.4deg);
    transition: transform 240ms var(--ease);
}

.inbox-visual__window:hover {
    transform: rotate(0deg) translateY(-5px);
}

.inbox-visual__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 17px;
    border-bottom: 1px solid #e7e2db;
    color: #6f695f;
    font-size: 11px;
    font-weight: 650;
}

.inbox-visual__top strong {
    color: var(--ink);
    font-size: 12px;
}

.inbox-visual__body {
    display: grid;
    grid-template-columns: 0.7fr 1.3fr;
    min-height: 370px;
}

.inbox-visual__list {
    border-right: 1px solid #e7e2db;
    background: #fbfaf8;
}

.inbox-visual__item {
    padding: 18px 15px;
    border-bottom: 1px solid #ece8e2;
}

.inbox-visual__item.is-active {
    border-left: 3px solid var(--violet);
    padding-left: 12px;
    background: #eeebff;
}

.inbox-visual__item small {
    color: #999186;
    font-size: 9px;
}

.inbox-visual__item strong {
    display: block;
    margin-top: 6px;
    color: #35312b;
    font-size: 12px;
}

.inbox-visual__thread {
    padding: 22px 22px 18px;
}

.inbox-visual__thread h3 {
    margin: 0;
    color: #2a2723;
    font-size: 16px;
    letter-spacing: -0.03em;
}

.inbox-visual__thread p {
    margin: 9px 0 22px;
    color: #827b70;
    font-size: 11px;
    line-height: 1.55;
}

.inbox-visual__message {
    margin: 11px 0;
    border-radius: 9px;
    padding: 13px;
    color: #4e483f;
    background: #f5f2ed;
    font-size: 11px;
    line-height: 1.5;
}

.inbox-visual__message--reply {
    margin-left: 24px;
    color: #302b48;
    background: #ece9ff;
}

.inbox-visual__compose {
    margin-top: 27px;
    border-top: 1px solid #e8e3dc;
    padding-top: 15px;
    color: #a09a90;
    font-size: 10px;
}

.inbox-story {
    padding: 104px 0 117px;
    background: var(--aubergine);
    color: var(--white);
}

.inbox-story__intro {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 8vw;
    margin-bottom: 68px;
}

.inbox-story__intro h2 {
    margin: 0;
    color: var(--white);
    font-size: clamp(2.4rem, 4.5vw, 4.8rem);
    letter-spacing: -0.07em;
    line-height: 0.96;
}

.inbox-story__intro p {
    max-width: 460px;
    margin: 3px 0 0;
    color: rgb(255 255 255 / 65%);
    font-size: 18px;
    line-height: 1.55;
}

.inbox-story .workflow-line::before {
    background: rgb(255 255 255 / 17%);
}

.inbox-story .workflow-step__number {
    border-color: rgb(255 255 255 / 20%);
    background: var(--aubergine);
}

.inbox-story .workflow-step h3 {
    color: var(--white);
}

.inbox-story .workflow-step p {
    color: rgb(255 255 255 / 58%);
}

.inbox-band {
    padding: 116px 0 122px;
    background: var(--violet);
    color: var(--white);
}

.inbox-band__inner {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    align-items: end;
    gap: 8vw;
}

.inbox-band h2 {
    max-width: 670px;
    margin: 0;
    font-size: clamp(2.5rem, 5vw, 5.3rem);
    letter-spacing: -0.075em;
    line-height: 0.95;
}

.inbox-band .join-form {
    margin-top: 0;
}

/* Prototype 05 — Quiet launch */
.quiet-hero {
    min-height: 100svh;
    padding: 152px 0 95px;
    background: #fbfaf7;
}

.quiet-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(330px, 0.62fr);
    align-items: end;
    gap: 9vw;
}

.quiet-copy {
    max-width: 780px;
}

.quiet-copy .display {
    max-width: 780px;
    font-size: clamp(3.35rem, 7.1vw, 7rem);
}

.quiet-copy .display em {
    color: var(--violet);
}

.quiet-mark {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 330px;
}

.quiet-mark::before,
.quiet-mark::after {
    position: absolute;
    border: 1px solid #e0dbd2;
    border-radius: 50%;
    content: "";
}

.quiet-mark::before {
    width: 330px;
    height: 330px;
}

.quiet-mark::after {
    width: 235px;
    height: 235px;
    border-style: dashed;
}

.quiet-mark img {
    position: relative;
    z-index: 1;
    width: 115px;
}

.quiet-note {
    margin: 70px 0 0;
    border-top: 1px solid var(--paper-line);
    padding-top: 17px;
    color: var(--muted);
    font-size: 12px;
}

.quiet-note strong {
    color: var(--ink);
}

.quiet-proof {
    padding: 95px 0 108px;
    background: #efece6;
}

.quiet-proof__grid {
    display: grid;
    grid-template-columns: 0.72fr 1.28fr;
    gap: 8vw;
}

.quiet-proof h2 {
    max-width: 430px;
    margin: 0;
    font-size: clamp(2.3rem, 4.5vw, 4.5rem);
    letter-spacing: -0.07em;
    line-height: 0.97;
}

.quiet-proof__list {
    border-top: 1px solid #d8d2c8;
}

.quiet-proof__item {
    display: grid;
    grid-template-columns: 52px 1fr;
    gap: 20px;
    border-bottom: 1px solid #d8d2c8;
    padding: 23px 0 25px;
}

.quiet-proof__index {
    color: var(--violet);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
}

.quiet-proof__item h3 {
    margin: 0;
    font-size: 17px;
    letter-spacing: -0.03em;
}

.quiet-proof__item p {
    max-width: 430px;
    margin: 7px 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
}

.quiet-final {
    padding: 116px 0 128px;
    color: var(--white);
    background: var(--aubergine);
}

.quiet-final__grid {
    display: grid;
    grid-template-columns: 1fr 0.72fr;
    align-items: end;
    gap: 8vw;
}

.quiet-final h2 {
    max-width: 650px;
    margin: 0;
    font-size: clamp(2.55rem, 5vw, 5.15rem);
    letter-spacing: -0.075em;
    line-height: 0.95;
}

.quiet-final .join-form {
    margin-top: 0;
}

/* Prototype selector / overview */
.overview {
    min-height: 100svh;
    padding: 164px 0 100px;
    background: var(--paper);
}

.overview__intro {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 62px;
}

.overview__intro h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(3.4rem, 6.4vw, 6.2rem);
    letter-spacing: -0.075em;
    line-height: 0.95;
}

.overview__intro p {
    max-width: 320px;
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.55;
}

.prototype-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.prototype-card {
    display: grid;
    grid-template-columns: 86px 1fr auto;
    align-items: center;
    gap: 21px;
    min-height: 124px;
    border-top: 1px solid var(--paper-line);
    padding: 20px 0;
    transition: transform 180ms var(--ease);
}

.prototype-card:hover {
    transform: translateX(5px);
}

.prototype-card__number {
    color: var(--violet);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
}

.prototype-card h2 {
    margin: 0;
    font-size: 20px;
    letter-spacing: -0.04em;
}

.prototype-card p {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
}

.prototype-card__arrow {
    color: var(--violet);
    font-size: 24px;
}

.overview__footer {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin-top: 76px;
    border-top: 1px solid var(--paper-line);
    padding-top: 16px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

@media (max-width: 980px) {
    .wrap,
    .site-header {
        width: min(var(--max), calc(100% - 44px));
    }

    .site-header__nav a:not(:last-child) {
        display: none;
    }

    .signal-hero__grid,
    .ledger-hero__grid,
    .flight-hero__grid,
    .inbox-hero__grid {
        grid-template-columns: 1fr;
        gap: 64px;
    }

    .signal-hero__grid {
        padding-top: 148px;
    }

    .signal-stage,
    .flight-map {
        min-height: 470px;
    }

    .signal-console {
        right: 5%;
        width: min(94%, 590px);
    }

    .signal-stage::before {
        right: 4%;
    }

    .signal-stage::after {
        right: 17%;
    }

    .ledger-hero {
        padding-top: 148px;
    }

    .ledger-stage {
        max-width: 760px;
    }

    .flight-map {
        max-width: 680px;
        width: 100%;
        margin-inline: auto;
    }

    .quiet-hero__grid,
    .quiet-proof__grid,
    .quiet-final__grid {
        grid-template-columns: 1fr;
        gap: 54px;
    }

    .quiet-mark {
        order: -1;
        min-height: 260px;
    }

    .quiet-mark::before {
        width: 260px;
        height: 260px;
    }

    .quiet-mark::after {
        width: 185px;
        height: 185px;
    }

    .ledger-final__grid,
    .flight-final__grid,
    .inbox-band__inner {
        grid-template-columns: 1fr;
        display: grid;
        gap: 38px;
    }

    .ledger-final .join-form,
    .flight-final .join-form,
    .inbox-band .join-form,
    .quiet-final .join-form {
        width: min(100%, 540px);
        margin-top: 0;
    }

    .overview__intro {
        display: block;
    }

    .overview__intro p {
        margin-top: 24px;
    }

    .prototype-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .wrap,
    .site-header {
        width: min(var(--max), calc(100% - 32px));
    }

    .site-header {
        padding-top: 20px;
    }

    .site-header__brand {
        width: 116px;
    }

    .site-header__nav {
        gap: 0;
    }

    .site-header__nav .button {
        min-height: 42px;
        padding-inline: 14px;
        font-size: 12px;
    }

    .display {
        font-size: clamp(3rem, 15vw, 4.8rem);
    }

    .lede {
        margin-top: 21px;
        font-size: 1rem;
    }

    .join-form {
        display: grid;
        gap: 9px;
        width: 100%;
    }

    .join-form input,
    .join-form .button {
        width: 100%;
        border-radius: 8px;
    }

    .signal-hero__grid {
        gap: 42px;
        padding-top: 120px;
        padding-bottom: 46px;
    }

    .signal-copy .display,
    .flight-copy .display,
    .ledger-copy .display,
    .inbox-copy .display,
    .quiet-copy .display {
        font-size: clamp(3rem, 14.5vw, 4.7rem);
    }

    .signal-stage,
    .flight-map {
        min-height: 350px;
    }

    .signal-console {
        top: 9%;
        right: 0;
        width: 100%;
        transform: rotate(1deg) scale(0.98);
    }

    .signal-stage::before {
        top: 0;
        right: -14%;
        width: 330px;
        height: 330px;
    }

    .signal-stage::after {
        top: 10%;
        right: 4%;
        width: 250px;
        height: 250px;
    }

    .signal-proof {
        gap: 12px;
        margin-top: 28px;
    }

    .signal-proof span {
        font-size: 9px;
        line-height: 1.4;
    }

    .signal-proof b {
        font-size: 10px;
    }

    .ledger-steps,
    .ledger-final,
    .flight-final,
    .inbox-story,
    .inbox-band,
    .quiet-proof,
    .quiet-final {
        padding-top: 78px;
        padding-bottom: 84px;
    }

    .inbox-story__intro {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .inbox-story__intro {
        margin-bottom: 48px;
    }

    .inbox-story__intro h2 {
        font-size: clamp(2.4rem, 12vw, 4rem);
    }

    .inbox-story__intro p {
        font-size: 16px;
    }

    .workflow-line {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .workflow-line::before {
        top: 18px;
        right: auto;
        bottom: 39px;
        left: 18px;
        width: 1px;
        height: auto;
    }

    .workflow-step {
        display: grid;
        grid-template-columns: 38px 1fr;
        column-gap: 16px;
    }

    .workflow-step h3 {
        margin: 0;
        padding-top: 8px;
    }

    .workflow-step p {
        grid-column: 2;
    }

    .ledger-hero,
    .inbox-hero,
    .quiet-hero {
        padding-top: 118px;
        padding-bottom: 66px;
    }

    .ledger-stage__frame {
        padding: 8px;
        border-radius: 12px;
    }

    .ledger-stage__label {
        font-size: 9px;
    }

    .flight-hero__grid {
        gap: 28px;
        padding-top: 120px;
    }

    .flight-map__ring--one {
        top: 3%;
        right: -7%;
        width: 340px;
        height: 340px;
    }

    .flight-map__ring--two {
        top: 14%;
        right: 8%;
        width: 250px;
        height: 250px;
    }

    .flight-map__ring--three {
        top: 27%;
        right: 25%;
        width: 160px;
        height: 160px;
    }

    .flight-map__path {
        top: 8%;
        right: 1%;
        width: 340px;
        height: 310px;
    }

    .flight-map__node--one {
        top: 11%;
        right: 5%;
    }

    .flight-map__node--two {
        top: 40%;
        right: 50%;
    }

    .flight-map__node--three {
        right: -1%;
        bottom: 14%;
    }

    .flight-map__annotation {
        right: 4%;
        bottom: 0;
        width: 165px;
    }

    .flight-specs__grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 24px;
    }

    .flight-spec:nth-child(2) {
        border-right: 0;
    }

    .inbox-visual__body {
        grid-template-columns: 0.82fr 1.18fr;
        min-height: 300px;
    }

    .inbox-visual__thread {
        padding: 17px 14px;
    }

    .inbox-visual__thread p {
        margin-bottom: 14px;
    }

    .inbox-visual__message--reply {
        margin-left: 10px;
    }

    .quiet-mark {
        min-height: 220px;
    }

    .quiet-mark img {
        width: 82px;
    }

    .quiet-mark::before {
        width: 220px;
        height: 220px;
    }

    .quiet-mark::after {
        width: 160px;
        height: 160px;
    }

    .quiet-note {
        margin-top: 48px;
    }

    .overview {
        padding-top: 116px;
    }

    .overview__intro h1 {
        font-size: clamp(3rem, 14vw, 4.6rem);
    }

    .prototype-card {
        grid-template-columns: 52px 1fr auto;
        gap: 12px;
    }

    .prototype-card h2 {
        font-size: 17px;
    }

    .prototype-card p {
        font-size: 12px;
    }

    .overview__footer {
        display: block;
        line-height: 1.7;
    }

    .overview__footer span {
        display: block;
    }
}

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

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}