:root {
  --ink: #1a1a1a;
  --body: #3d3d3d;
  --green: #64be3c;
  --green-deep: #38761d;
  --green-dark: #245616;
  --orange: #ee9837;
  --yellow: #f3c431;
  --teal: #7aa3ad;
  --mist: #dff2f7;
  --paper: #f7f6f1;
  --white: #ffffff;
  --line: rgba(26, 26, 26, 0.08);
  --shadow: 0 18px 50px rgba(61, 80, 70, 0.12);
  --sans: "Fira Sans", "Avenir Next", "Segoe UI", sans-serif;
  --display: "Rubik", "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

body {
  position: relative;
  overflow-x: clip;
  margin: 0;
  color: var(--body);
  background:
    radial-gradient(920px 520px at -8% -10%, rgba(223, 242, 247, 0.95), transparent 62%),
    radial-gradient(720px 480px at 110% 8%, rgba(243, 196, 49, 0.28), transparent 58%),
    var(--paper);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.55;
}

.arc {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  pointer-events: none;
}

.arc-left {
  width: 540px;
  height: 540px;
  top: -250px;
  left: -230px;
  border: 78px solid var(--yellow);
}

.arc-right {
  width: 420px;
  height: 420px;
  right: -180px;
  bottom: 8vh;
  border: 64px solid rgba(100, 190, 60, 0.35);
}

.top,
main,
.foot {
  position: relative;
  z-index: 1;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 24px 0;
}

.lockup {
  display: flex;
  flex-direction: column;
  color: var(--ink);
  text-decoration: none;
}

.lockup-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.lockup-sub {
  color: var(--body);
  font-size: 0.82rem;
}

.lockup-mark {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--ink);
  border-left: 1px solid var(--ink);
  padding-left: 14px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 480px);
  gap: 40px;
  align-items: center;
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 24px 28px;
}

.kicker {
  margin: 0 0 18px;
  color: var(--body);
  font-size: 0.95rem;
}

.kicker::after {
  content: "";
  display: block;
  width: 92px;
  height: 2px;
  margin-top: 12px;
  background: var(--orange);
}

h1 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(4.4rem, 8vw, 7.1rem);
  line-height: 0.82;
  letter-spacing: -0.055em;
}

h1 span {
  display: block;
}

.word-green {
  position: relative;
  width: max-content;
  background: linear-gradient(180deg, #d7ff6a 0%, #64be3c 38%, #1f7a28 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.spark {
  position: absolute;
  top: 0.18em;
  right: -0.42em;
  width: 0.34em;
  height: 0.34em;
}

.spark::before,
.spark::after {
  content: "";
  position: absolute;
  background: var(--green);
  border-radius: 99px;
}

.spark::before {
  width: 8px;
  height: 28px;
  right: 10px;
  top: 0;
  transform: rotate(28deg);
  box-shadow: 16px 10px 0 -2px var(--green);
}

.spark::after {
  width: 8px;
  height: 18px;
  right: -2px;
  top: 18px;
  transform: rotate(28deg);
}

.tagline {
  margin: 22px 0 0;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  letter-spacing: -0.03em;
}

.lead {
  max-width: 38rem;
  margin: 14px 0 0;
  font-size: 1.12rem;
}

.action {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 22px;
}

.action-label {
  margin: 0 0 14px;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 16px;
}

.qr-card {
  margin: 0;
  flex: 0 0 auto;
  width: 192px;
  max-width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--white);
  border-radius: 20px;
  padding: 12px 12px 10px;
  border: 1px solid var(--line);
}

#qrcode {
  width: 168px;
  height: 168px;
}

#qrcode svg {
  display: block;
  width: 168px;
  height: 168px;
}

.qr-card figcaption {
  margin: 0;
  color: #3e5c64;
  font-size: 0.78rem;
  text-align: center;
  line-height: 1.35;
}

.copy-help {
  margin: 14px 0 0;
  color: var(--body);
  font-size: 0.95rem;
  line-height: 1.4;
}

.copy-card {
  flex: 1 1 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  min-width: min(100%, 180px);
}

#copy-button,
#copy-button-foot,
.text-button {
  font: inherit;
}

#copy-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  min-height: 148px;
  padding: 18px 16px;
  border: 0;
  border-radius: 18px;
  background: var(--green-deep);
  color: white;
  cursor: pointer;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  box-shadow: 0 0 0 6px rgba(100, 190, 60, 0.18), 0 14px 30px rgba(56, 118, 29, 0.22);
}

#copy-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  text-align: left;
}

.copy-verb {
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.9;
}

.copy-name {
  font-size: 1.25rem;
  font-weight: 800;
}

#copy-button:hover {
  background: var(--green-dark);
}

#copy-button:focus-visible,
#copy-button-foot:focus-visible,
.text-link:focus-visible,
.lockup:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

#copy-button.is-copied {
  background: var(--ink);
  box-shadow: none;
}

.copy-icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  flex: 0 0 auto;
}

#prompt-fallback {
  display: block;
  width: 100%;
  min-height: 180px;
  margin-top: 12px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  color: var(--ink);
  font: 16px/1.45 var(--sans);
  resize: vertical;
}

#prompt-fallback[hidden] {
  display: none;
}

.action.is-from-scan {
  box-shadow: 0 0 0 3px rgba(100, 190, 60, 0.45), var(--shadow);
}

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 1120px;
  margin: 10px auto 0;
  padding: 8px 24px 36px;
}

.steps li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 18px;
  padding: 16px 16px 18px;
  border-top: 3px solid var(--green);
}

.step-index {
  font-family: var(--display);
  font-weight: 800;
  color: var(--orange);
}

.steps strong {
  color: var(--ink);
  font-family: var(--display);
  letter-spacing: -0.03em;
}

.steps span:last-child {
  font-size: 0.92rem;
}

.manifesto {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 24px 8px;
}

.manifesto p {
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.manifesto-em {
  color: var(--green-deep);
}

.story {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 24px;
}

.story-block {
  background: var(--white);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--line);
}

.story-accent {
  background: var(--mist);
}

h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3vw, 2.15rem);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.stats {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}

.stats p {
  margin: 0;
}

.stats strong {
  color: var(--green-deep);
  font-family: var(--display);
  font-size: 1.8rem;
  letter-spacing: -0.04em;
}

.source {
  color: var(--teal);
  font-size: 0.85rem;
  font-style: italic;
}

.story-lead {
  margin-top: 0;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.prompt-section,
.stopa,
.join {
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 24px 28px;
}

.section-head {
  max-width: 44rem;
}

.rules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.rules li {
  margin: 0;
  padding: 18px 18px 18px 20px;
  background: var(--white);
  border-radius: 18px;
  border-left: 4px solid var(--orange);
  color: var(--ink);
}

.stopa {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
  align-items: center;
  background: var(--ink);
  color: white;
  border-radius: 28px;
  padding: 36px;
  max-width: calc(1120px - 48px);
}

.stopa h2,
.stopa .kicker {
  color: white;
}

.stopa .kicker::after {
  background: var(--yellow);
}

.meters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.meters li {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 14px 16px;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.join {
  padding-bottom: 48px;
}

.text-link {
  color: var(--green-dark);
  font-weight: 600;
}

.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 8px 24px 36px;
  color: var(--teal);
  font-size: 0.92rem;
}

.foot p {
  margin: 0;
}

.text-button {
  border: 0;
  background: transparent;
  color: var(--green-dark);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 860px) {
  .hero,
  .story,
  .stopa,
  .steps,
  .rules {
    grid-template-columns: 1fr;
  }

  .qr-card {
    width: 168px;
  }

  #qrcode,
  #qrcode svg {
    width: 144px;
    height: 144px;
  }

  #copy-button {
    min-height: 144px;
  }

  .stopa {
    max-width: none;
    margin: 0 24px;
    padding: 28px 22px;
  }

  .arc-left,
  .arc-right {
    opacity: 0.55;
  }

  h1 {
    font-size: clamp(3.4rem, 18vw, 5rem);
  }

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

@media (max-width: 640px) {
  .top {
    padding: calc(16px + env(safe-area-inset-top)) 16px 0;
  }

  .lockup-name {
    font-size: 1rem;
  }

  .lockup-mark {
    padding-left: 10px;
    font-size: 0.95rem;
  }

  .arc-left {
    width: 280px;
    height: 280px;
    top: -150px;
    left: -140px;
    border-width: 42px;
  }

  .arc-right {
    width: 220px;
    height: 220px;
    right: -120px;
    border-width: 36px;
  }

  .hero {
    gap: 22px;
    padding: 28px 16px 12px;
  }

  h1 {
    font-size: clamp(2.65rem, 15vw, 3.5rem);
    letter-spacing: -0.045em;
    padding-right: 0.35em;
  }

  .spark::before {
    width: 6px;
    height: 18px;
    right: 6px;
    box-shadow: 11px 7px 0 -2px var(--green);
  }

  .spark::after {
    width: 6px;
    height: 12px;
    right: 0;
    top: 12px;
  }

  .tagline {
    margin-top: 16px;
    font-size: 1.15rem;
  }

  .lead {
    font-size: 1rem;
  }

  .action {
    border-radius: 22px;
    padding: 16px;
  }

  .action-label {
    font-size: 1.2rem;
  }

  .qr-card {
    display: none;
  }

  .copy-card {
    width: 100%;
    flex-basis: 100%;
  }

  #copy-button {
    min-height: 96px;
  }

  .steps {
    padding: 8px 16px 24px;
    gap: 10px;
  }

  .steps li {
    padding: 14px 14px 16px;
  }

  .manifesto {
    padding: 12px 16px 4px;
  }

  .manifesto p {
    font-size: clamp(1.45rem, 7.2vw, 1.9rem);
  }

  .story {
    padding: 16px;
    gap: 12px;
  }

  .story-block {
    padding: 18px 16px;
    border-radius: 18px;
  }

  h2 {
    font-size: 1.45rem;
  }

  .prompt-section,
  .join {
    padding: 8px 16px 20px;
  }

  .rules {
    gap: 8px;
  }

  .rules li {
    padding: 14px 14px 14px 16px;
  }

  .stopa {
    margin: 0 16px;
    padding: 22px 16px;
    border-radius: 22px;
    gap: 16px;
  }

  .foot {
    padding: 8px 16px calc(28px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 900px), (pointer: coarse) {
  .qr-card {
    display: none;
  }

  .copy-card {
    width: 100%;
    flex-basis: 100%;
  }
}

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