:root {
  --ink: #171510;
  --ink-soft: #5f5a50;
  --paper: #f4ede1;
  --paper-light: #fbf8f1;
  --line: rgba(23, 21, 16, 0.16);
  --forest: #18372e;
  --forest-deep: #10251f;
  --signal: #dfff7a;
  --sky: #cbdfe4;
  --clay: #a74831;
  --white: #fffdf8;
  --serif: "Newsreader", Georgia, serif;
  --sans: "Inter Tight", Arial, sans-serif;
  --mono: "JetBrains Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.45;
  text-rendering: optimizeLegibility;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
}

.brand-wordmark {
  font: 500 32px/1 var(--serif);
  letter-spacing: -0.035em;
}

.brand-wordmark em {
  font-weight: 400;
}

.brand-section {
  padding-left: 10px;
  border-left: 1px solid currentColor;
  font: 600 10px/1.25 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 16px;
  font: 600 11px/1.3 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.email-form {
  width: 100%;
}

.email-form label {
  display: block;
  margin: 0 0 9px;
  font-size: 14px;
  font-weight: 650;
}

.email-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.email-form input[type="email"] {
  width: 100%;
  min-height: 58px;
  padding: 0 17px;
  border: 1px solid rgba(23, 21, 16, 0.24);
  border-radius: 5px;
  color: var(--ink);
  background: var(--white);
  box-shadow: none;
}

.email-form input[type="email"]::placeholder {
  color: #80796e;
}

.email-form button[type="submit"],
.primary-action {
  min-height: 58px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-weight: 750;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
}

.email-form button[disabled] {
  cursor: wait;
  opacity: 0.68;
}

.form-note,
.form-status {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.45;
}

.form-note {
  color: inherit;
  opacity: 0.72;
}

.form-status {
  min-height: 18px;
  font-weight: 650;
}

.form-status.is-error {
  color: #8c2e23;
}

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

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  font-weight: 650;
}

.trust-row li::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: currentColor;
  vertical-align: 1px;
}

.followup-panel {
  position: relative;
  margin-top: 22px;
  padding: 24px;
  border-radius: 9px;
  color: var(--ink);
  background: var(--paper-light);
  box-shadow: 0 18px 60px rgba(12, 26, 21, 0.18);
}

.followup-panel h2 {
  margin: 0;
  font: 500 clamp(30px, 6vw, 42px)/0.98 var(--serif);
  letter-spacing: -0.035em;
}

.followup-panel > p {
  max-width: 54ch;
  margin: 10px 0 22px;
  color: var(--ink-soft);
  font-size: 14px;
}

.interest-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  border: 0;
}

.interest-grid legend,
.optional-field label {
  display: block;
  width: 100%;
  margin: 0 0 9px;
  font-size: 13px;
  font-weight: 750;
}

.interest-grid legend {
  grid-column: 1 / -1;
}

.interest-choice {
  position: relative;
}

.interest-choice input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.interest-choice span {
  display: block;
  min-height: 44px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  font-size: 13px;
  font-weight: 650;
}

.interest-choice input:checked + span {
  color: #fff;
  border-color: var(--forest);
  background: var(--forest);
}

.interest-choice input:focus-visible + span {
  outline: 3px solid var(--signal);
  outline-offset: 2px;
}

.optional-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.optional-field select,
.optional-field input {
  width: 100%;
  min-height: 47px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--ink);
  background: #fff;
}

.followup-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
}

.followup-actions button {
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-radius: 4px;
  font-weight: 750;
}

.followup-actions button[type="submit"] {
  color: #fff;
  background: var(--forest);
}

.followup-actions button[type="button"] {
  padding-inline: 4px;
  color: var(--ink-soft);
  background: transparent;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.followup-complete {
  padding: 22px 0 2px;
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.site-footer p {
  margin: 0;
}

/* Immersive: the walk itself comes first. */
.variant-a {
  color: var(--white);
  background: var(--forest-deep);
}

.variant-a .immersive-hero {
  position: relative;
  min-height: min(860px, 100svh);
  isolation: isolate;
}

.variant-a .immersive-image {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 46%;
}

.variant-a .immersive-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 19, 15, 0.88) 0%, rgba(7, 19, 15, 0.64) 46%, rgba(7, 19, 15, 0.12) 76%),
    linear-gradient(0deg, rgba(7, 19, 15, 0.68), transparent 44%);
}

.variant-a .hero-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px clamp(22px, 5vw, 72px);
}

.variant-a .beta-label {
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.variant-a .immersive-copy {
  display: grid;
  grid-template-columns: minmax(0, 670px) minmax(320px, 410px);
  align-items: end;
  justify-content: space-between;
  gap: 64px;
  min-height: 710px;
  padding: 80px clamp(22px, 5vw, 72px) 60px;
}

.variant-a h1 {
  max-width: 750px;
  margin: 0;
  font: 500 clamp(64px, 8vw, 120px)/0.98 var(--serif);
  letter-spacing: -0.025em;
}

.variant-a .hero-intro {
  max-width: 540px;
  margin: 28px 0 0;
  color: rgba(255, 253, 248, 0.84);
  font-size: clamp(18px, 2vw, 23px);
}

.variant-a .signup-card {
  padding: 25px;
  color: var(--ink);
  background: rgba(255, 253, 248, 0.96);
  backdrop-filter: blur(12px);
}

.variant-a .signup-card h2 {
  margin: 0 0 8px;
  font: 500 34px/0.98 var(--serif);
  letter-spacing: -0.035em;
}

.variant-a .signup-card > p {
  margin: 0 0 20px;
  color: var(--ink-soft);
  font-size: 14px;
}

.variant-a .email-form button[type="submit"] {
  color: var(--ink);
  background: var(--signal);
}

.variant-a .immersive-detail {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(36px, 8vw, 120px);
  padding: 100px clamp(22px, 8vw, 132px);
  color: var(--ink);
  background: var(--paper);
}

.variant-a .immersive-detail h2 {
  max-width: 520px;
  margin: 0;
  font: 500 clamp(46px, 6vw, 82px)/0.92 var(--serif);
  letter-spacing: -0.05em;
}

.variant-a .steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.variant-a .steps li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  counter-increment: steps;
}

.variant-a .steps li::before {
  content: counter(steps, decimal-leading-zero);
  font: 600 11px/1.5 var(--mono);
}

.variant-a .steps strong {
  display: block;
  margin-bottom: 4px;
  font-size: 19px;
}

.variant-a .steps span {
  color: var(--ink-soft);
  font-size: 15px;
}

.variant-a .site-footer {
  color: var(--ink);
  background: var(--paper);
}

/* Editorial: concrete walk choices lead the page. */
.variant-b {
  background: var(--paper);
}

.variant-b .editorial-shell {
  width: min(100% - 40px, 1220px);
  margin: 0 auto;
}

.variant-b .editorial-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.variant-b .editorial-header span {
  font: 600 10px/1.3 var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.variant-b .editorial-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: clamp(50px, 9vw, 150px);
  padding: 74px 0 64px;
}

.variant-b h1 {
  max-width: 760px;
  margin: 0;
  font: 500 clamp(62px, 8vw, 120px)/0.9 var(--serif);
  letter-spacing: -0.04em;
}

.variant-b .editorial-aside {
  align-self: end;
}

.variant-b .editorial-aside > p {
  max-width: 42ch;
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 18px;
}

.variant-b .email-form button[type="submit"] {
  color: var(--white);
  background: var(--ink);
}

.variant-b .walk-list {
  margin: 0 0 100px;
  border-top: 1px solid var(--ink);
}

.variant-b .walk-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) minmax(180px, 0.4fr);
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.variant-b .walk-row img {
  width: 88px;
  height: 66px;
  object-fit: cover;
}

.variant-b .walk-row h2 {
  margin: 0;
  font: 500 clamp(30px, 4vw, 54px)/1 var(--serif);
  letter-spacing: -0.04em;
}

.variant-b .walk-row p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.variant-b .walk-row:nth-child(2) img {
  filter: saturate(0.8);
}

.variant-b .walk-index {
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Community: participation and useful feedback lead the page. */
.variant-c {
  background: var(--sky);
}

.variant-c .community-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 26px clamp(20px, 5vw, 70px);
}

.variant-c .community-header > span {
  padding: 8px 10px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.variant-c .community-main {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(380px, 0.9fr);
  gap: clamp(30px, 6vw, 90px);
  align-items: start;
  min-height: 760px;
  padding: 74px clamp(20px, 5vw, 70px) 88px;
}

.variant-c h1 {
  max-width: 810px;
  margin: 0;
  font: 750 clamp(62px, 8vw, 116px)/0.92 var(--sans);
  letter-spacing: -0.035em;
}

.variant-c .community-lede {
  max-width: 620px;
  margin: 28px 0 32px;
  font-size: clamp(18px, 2vw, 24px);
}

.variant-c .test-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--ink);
  list-style: none;
}

.variant-c .test-list li {
  min-height: 110px;
  padding: 14px 18px 14px 0;
  border-right: 1px solid rgba(23, 21, 16, 0.24);
  font-size: 13px;
  font-weight: 650;
}

.variant-c .test-list li + li {
  padding-left: 18px;
}

.variant-c .test-list li:last-child {
  border-right: 0;
}

.variant-c .community-card {
  position: sticky;
  top: 28px;
  overflow: hidden;
  color: var(--white);
  background: var(--forest);
}

.variant-c .community-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  object-position: center 54%;
  filter: saturate(0.75) contrast(1.04);
}

.variant-c .community-signup {
  padding: 28px;
}

.variant-c .community-signup h2 {
  margin: 0;
  font: 500 36px/0.96 var(--serif);
  letter-spacing: -0.035em;
}

.variant-c .community-signup > p {
  margin: 10px 0 22px;
  color: rgba(255, 253, 248, 0.76);
  font-size: 14px;
}

.variant-c .email-form button[type="submit"] {
  color: var(--ink);
  background: var(--signal);
}

.variant-c .site-footer {
  background: rgba(255, 255, 255, 0.18);
}

/* Privacy and fallback pages. */
.plain-page {
  min-height: 100vh;
  background: var(--paper-light);
}

.plain-header,
.plain-main {
  width: min(100% - 40px, 780px);
  margin: 0 auto;
}

.plain-header {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.plain-main {
  padding: 70px 0 100px;
}

.plain-main h1 {
  margin: 0 0 28px;
  font: 500 clamp(54px, 9vw, 94px)/0.9 var(--serif);
  letter-spacing: -0.055em;
}

.plain-main h2 {
  margin: 34px 0 8px;
  font: 500 28px/1 var(--serif);
}

.plain-main p,
.plain-main li {
  max-width: 66ch;
  color: #413d35;
}

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

  .email-form button[type="submit"] {
    width: 100%;
  }

  .variant-a .immersive-copy,
  .variant-b .editorial-intro,
  .variant-c .community-main {
    grid-template-columns: 1fr;
  }

  .variant-a .immersive-copy {
    min-height: 720px;
    gap: 42px;
    align-content: end;
  }

  .variant-a .immersive-detail {
    grid-template-columns: 1fr;
  }

  .variant-b .editorial-intro {
    gap: 34px;
  }

  .variant-c .community-card {
    position: static;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .brand-wordmark {
    font-size: 27px;
  }

  .brand-section {
    display: none;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 8px;
  }

  .interest-grid,
  .optional-fields {
    grid-template-columns: 1fr;
  }

  .followup-panel {
    margin-inline: -8px;
    padding: 20px;
  }

  .variant-a .hero-nav {
    padding-top: 20px;
  }

  .variant-a .beta-label {
    max-width: 120px;
    text-align: right;
  }

  .variant-a .immersive-copy {
    min-height: calc(100svh - 84px);
    padding-top: 90px;
    padding-bottom: 26px;
  }

  .variant-a h1 {
    font-size: clamp(58px, 20vw, 84px);
  }

  .variant-a .hero-intro {
    margin-top: 18px;
    font-size: 17px;
  }

  .variant-a .signup-card {
    padding: 20px;
  }

  .variant-a .immersive-detail {
    padding-block: 70px;
  }

  .variant-b .editorial-shell {
    width: min(100% - 32px, 1220px);
  }

  .variant-b .editorial-header {
    padding-block: 20px;
  }

  .variant-b .editorial-header > span {
    max-width: 112px;
    text-align: right;
  }

  .variant-b .editorial-intro {
    padding: 54px 0 48px;
  }

  .variant-b h1 {
    font-size: clamp(58px, 19vw, 82px);
  }

  .variant-b .walk-list {
    margin-bottom: 64px;
  }

  .variant-b .walk-row {
    grid-template-columns: 72px 1fr;
    gap: 14px;
  }

  .variant-b .walk-row img {
    width: 72px;
    height: 58px;
  }

  .variant-b .walk-row p {
    grid-column: 2;
  }

  .variant-c .community-header {
    padding-block: 20px;
  }

  .variant-c .community-main {
    min-height: auto;
    padding-top: 48px;
    padding-bottom: 62px;
  }

  .variant-c h1 {
    font-size: clamp(54px, 17vw, 78px);
  }

  .variant-c .test-list {
    grid-template-columns: 1fr;
  }

  .variant-c .test-list li,
  .variant-c .test-list li + li {
    min-height: auto;
    padding: 12px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(23, 21, 16, 0.24);
  }

  .variant-c .community-card img {
    height: 210px;
  }
}

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