:root {
  --paper: #fbfaf6;
  --paper-warm: #f4f0e8;
  --ink: #11110f;
  --muted: #6d675f;
  --line: #dcd6cc;
  --line-soft: rgba(17, 17, 15, 0.052);
  --scope: rgba(17, 17, 15, 0.16);
  --scope-soft: rgba(17, 17, 15, 0.105);
  --scope-strong: rgba(17, 17, 15, 0.29);
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(251, 250, 246, 0.35), rgba(244, 240, 232, 0.34)),
    linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), var(--line-soft) calc(100% - 1px)),
    var(--paper);
  background-size: 100% 100%, calc(100vw / 10) 100%, auto;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  line-height: 1.45;
}

img,
svg {
  display: block;
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px clamp(18px, 4vw, 58px);
  pointer-events: none;
}

.brand,
.header-actions a {
  pointer-events: auto;
}

.brand img {
  width: 124px;
  opacity: 0.94;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language {
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  text-decoration: none;
}

.instagram-button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(251, 250, 246, 0.82);
  text-decoration: none;
  backdrop-filter: blur(12px);
}

.instagram-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
}

.observation-sheet,
.site-footer {
  width: min(var(--max), calc(100% - clamp(36px, 8vw, 116px)));
  margin: 0 auto;
}

.observation-sheet {
  position: relative;
}

.hero-panel,
.author-panel,
.notice-panel {
  position: relative;
  z-index: 1;
  border-bottom: 1px solid var(--line);
}

.hero-panel {
  display: grid;
  align-content: end;
  min-height: 100vh;
  padding: 132px 0 clamp(86px, 12vw, 158px);
  overflow: hidden;
}

.grid-break {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  border: 1px solid rgba(17, 17, 15, 0.08);
  opacity: 0.8;
}

.grid-break::before,
.grid-break::after {
  position: absolute;
  content: "";
  background: rgba(17, 17, 15, 0.12);
}

.grid-break::before {
  top: 50%;
  left: -18px;
  width: 36px;
  height: 1px;
}

.grid-break::after {
  top: -18px;
  left: 50%;
  width: 1px;
  height: 36px;
}

.grid-break-author {
  left: clamp(16px, 4vw, 54px);
  bottom: clamp(48px, 7vw, 96px);
  width: min(16vw, 166px);
  height: min(16vw, 166px);
  transform: translateY(18px);
}

.grid-break-hero {
  left: clamp(118px, 13vw, 172px);
  top: clamp(118px, 15vw, 184px);
  width: min(10vw, 96px);
  height: min(10vw, 96px);
  opacity: 0.5;
  transform: translateX(0);
}

.grid-break-notice {
  left: auto;
  right: clamp(4px, 2vw, 28px);
  bottom: clamp(34px, 5vw, 66px);
  width: min(8vw, 76px);
  height: min(8vw, 76px);
  transform: translateX(0);
  opacity: 0.42;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.system-label,
label,
small,
figcaption,
.site-footer {
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1,
h2 {
  margin: 0;
  font-weight: 400;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  margin-top: 18px;
  font-size: clamp(42px, 6.2vw, 86px);
  line-height: 0.98;
}

.intro-note {
  max-width: 440px;
  margin: 34px 0 0 auto;
  color: var(--muted);
  font-size: clamp(17px, 1.55vw, 22px);
  line-height: 1.36;
}

.scope {
  position: absolute;
  pointer-events: none;
}

.scope-hero {
  right: clamp(-150px, -4vw, -30px);
  bottom: clamp(74px, 12vw, 152px);
  width: min(64vw, 720px);
  aspect-ratio: 1 / 1;
}

.scope-author {
  right: clamp(-110px, -7vw, -42px);
  top: clamp(-16px, 1vw, 18px);
  width: min(31vw, 300px);
  aspect-ratio: 1 / 1;
  opacity: 0.72;
}

.scope-notice {
  left: clamp(-78px, -5vw, -22px);
  top: clamp(44px, 7vw, 82px);
  width: min(22vw, 188px);
  aspect-ratio: 1 / 1;
  opacity: 0.58;
}

.ring,
.axis,
.tick {
  position: absolute;
  display: block;
}

.ring {
  border: 1.25px solid var(--scope);
  border-radius: 50%;
}

.ring.outer {
  inset: 0;
}

.ring.inner {
  inset: 18.5%;
  opacity: 0.58;
}

.axis {
  background: var(--scope-soft);
}

.axis.x {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
}

.axis.y {
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
}

.tick {
  width: 32px;
  height: 1px;
  background: var(--scope-strong);
}

.tick.t1 {
  top: 18%;
  left: 49%;
  transform: rotate(90deg);
}

.tick.t2 {
  right: 11%;
  top: 50%;
}

.tick.t3 {
  left: 24%;
  bottom: 23%;
  width: 20px;
}

.author-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.74fr) minmax(320px, 1fr);
  gap: clamp(38px, 7vw, 112px);
  align-items: start;
  padding: clamp(82px, 11vw, 144px) 0;
  overflow: hidden;
}

.author-document {
  position: relative;
  margin: 0;
  padding: clamp(14px, 2vw, 22px);
  background: rgba(255, 254, 251, 0.36);
  border: 1px solid rgba(220, 214, 204, 0.78);
  transform: translateY(10px);
}

.author-document::before,
.author-document::after {
  position: absolute;
  z-index: 2;
  content: "";
  background: var(--ink);
  opacity: 0.34;
  pointer-events: none;
}

.author-document::before {
  top: 34px;
  left: 2px;
  width: 24px;
  height: 1px;
}

.author-document::after {
  top: 2px;
  left: 34px;
  width: 1px;
  height: 24px;
}

.author-document img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: contain;
  filter: grayscale(0.08);
}

figcaption {
  margin-top: 10px;
  text-transform: none;
}

.author-copy {
  position: relative;
  max-width: 660px;
  padding-top: clamp(0px, 3.6vw, 64px);
  transform: translateX(clamp(0px, 1vw, 10px));
}

h2 {
  max-width: 560px;
  margin-top: 14px;
  font-size: clamp(28px, 3.2vw, 48px);
  line-height: 1.08;
}

.author-text {
  max-width: 520px;
  margin-top: 34px;
  color: var(--muted);
}

.author-text p {
  margin: 0;
  font-size: clamp(17px, 1.32vw, 20px);
  line-height: 1.46;
  text-align: left;
  text-wrap: pretty;
  hyphens: none;
}

.author-text p + p {
  margin-top: 22px;
}

.notice-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(380px, 0.9fr);
  gap: clamp(38px, 7vw, 112px);
  align-items: end;
  padding: clamp(82px, 11vw, 144px) 0;
  overflow: hidden;
}

.legal-page {
  min-height: 100vh;
  padding: clamp(94px, 10vw, 126px) 0 clamp(52px, 6vw, 78px);
}

.legal-content {
  max-width: 820px;
  color: var(--ink);
}

.legal-content h1 {
  max-width: 620px;
  margin-bottom: 24px;
  color: var(--ink);
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.06;
}

.legal-content h2 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: clamp(14px, 1.05vw, 16px);
  line-height: 1.12;
}

.legal-content p,
.legal-content li {
  margin: 0;
  color: rgba(17, 17, 15, 0.78);
  font-size: clamp(13px, 0.86vw, 14px);
  line-height: 1.45;
}

.legal-content ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.privacy-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px clamp(32px, 5vw, 78px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.privacy-list section.wide {
  grid-column: 1 / -1;
}

.return-link {
  display: inline-block;
  margin-top: 34px;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  letter-spacing: 0;
  text-decoration: none;
  text-transform: uppercase;
}

.return-link::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  margin-right: 10px;
  vertical-align: middle;
  background: currentColor;
  opacity: 0.55;
}

.return-link:hover {
  color: var(--muted);
}

.notice-copy,
.signup {
  position: relative;
  z-index: 1;
}

.notice-copy h2 {
  max-width: 640px;
}

.signup {
  width: 100%;
  max-width: 620px;
  justify-self: end;
  padding-top: 22px;
  border-top: 1px solid var(--ink);
}

label {
  display: block;
  margin-bottom: 10px;
}

.input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

input,
button {
  min-height: 44px;
  border-radius: 0;
  font: inherit;
}

input {
  min-width: 0;
  padding: 11px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
}

button {
  padding: 11px 0 11px 18px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink);
  cursor: pointer;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  text-transform: uppercase;
}

small {
  display: block;
  margin-top: 14px;
  text-transform: none;
}

.legal-note {
  max-width: 500px;
  margin-top: 8px;
  opacity: 0.78;
}

.legal-note a {
  margin-left: 0.25em;
}

.form-message {
  margin: 14px 0 0;
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 12px;
}

.site-footer {
  padding: 34px 0;
}

.site-footer p {
  margin: 0;
}

.language:hover,
.instagram-button:hover {
  color: var(--ink);
}

@media (max-width: 860px) {
  body {
    background-size: 100% 100%, calc(100vw / 6) 100%, auto;
  }

  .site-header {
    position: sticky;
    background: rgba(251, 250, 246, 0.92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
  }

  .hero-panel {
    min-height: auto;
    padding-top: 88px;
    padding-bottom: 72px;
  }

  .scope-hero {
    right: -42vw;
    bottom: 76px;
    width: 88vw;
  }

  .intro-note,
  .notice-copy {
    margin-left: 0;
  }

  .author-panel,
  .notice-panel {
    grid-template-columns: 1fr;
  }

  .scope-author {
    right: -30vw;
    width: 55vw;
  }

  .scope-notice {
    left: -24vw;
    width: 42vw;
  }

  .signup {
    justify-self: start;
    transform: none;
  }

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

  .privacy-list section.wide {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .observation-sheet,
  .site-footer {
    width: calc(100% - 32px);
  }

  .site-header {
    padding: 16px;
  }

  .brand img {
    width: 104px;
  }

  h1 {
    font-size: clamp(31px, 9.6vw, 43px);
    line-height: 1.02;
  }

  .intro-note {
    font-size: 17px;
    line-height: 1.38;
  }

  h2 {
    font-size: clamp(25px, 7.6vw, 34px);
  }

  .author-text p {
    font-size: 15px;
    line-height: 1.48;
  }

  .scope-hero {
    right: -56vw;
    bottom: 112px;
    width: 120vw;
  }

  .scope {
    opacity: 0.48;
  }

  .author-document {
    width: min(78vw, 304px);
    padding: 12px;
    justify-self: center;
    transform: none;
  }

  .author-copy {
    transform: none;
  }

  .grid-break {
    opacity: 0.35;
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  button {
    justify-self: start;
    padding-left: 0;
  }
}