@font-face {
  font-family: "Instrument Serif";
  src: url("/fonts/InstrumentSerif-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  color-scheme: light;
  --paper: oklch(0.978 0.008 88);
  --paper-deep: oklch(0.952 0.012 85);
  --ink: oklch(0.185 0.012 260);
  --muted: oklch(0.49 0.018 255);
  --line: oklch(0.84 0.012 85);
  --blue: oklch(0.49 0.105 244);
  --night: oklch(0.12 0.01 255);
  --serif: "Instrument Serif", "Iowan Old Style", "Baskerville", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--blue);
}

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  background: var(--night);
  color: var(--paper);
  transform: translateY(-180%);
}

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

.site-shell {
  width: min(1440px, 100%);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 64px);
}

.site-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.brand img {
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 38px);
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 600;
}

.site-nav a {
  text-decoration: none;
}

.hero {
  min-height: min(850px, calc(100svh - 88px));
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  align-items: center;
  gap: clamp(52px, 8vw, 132px);
  padding-block: clamp(72px, 10vw, 140px);
}

.hero-copy {
  max-width: 810px;
}

.kicker {
  margin: 0 0 28px;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.045em;
}

h1 {
  margin: 0;
  font-size: clamp(4.25rem, 9.2vw, 9.6rem);
  line-height: 0.79;
}

h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 6.2rem);
  line-height: 0.92;
}

h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.3;
}

p {
  margin: 0;
}

.hero-lede {
  max-width: 650px;
  margin-top: 42px;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.7vw, 1.36rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px 30px;
  margin-top: 36px;
}

.store-note {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  padding: 0 19px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 650;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 650;
}

.breathing-object {
  position: relative;
  display: grid;
  place-items: center;
}

.breathing-object::before {
  content: "";
  position: absolute;
  z-index: 0;
  width: 115%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: oklch(0.89 0.035 240 / 0.52);
  filter: blur(2px);
}

.phone {
  position: relative;
  z-index: 1;
  width: min(100%, 410px);
  aspect-ratio: 0.515;
  overflow: hidden;
  border: 9px solid oklch(0.22 0.01 255);
  border-radius: clamp(38px, 5vw, 64px);
  background:
    radial-gradient(circle at 50% 78%, oklch(0.98 0.01 95 / 0.19), transparent 28%),
    var(--night);
  color: oklch(0.96 0.006 90);
  box-shadow:
    0 44px 85px oklch(0.23 0.03 250 / 0.2),
    0 2px 8px oklch(0.2 0.01 255 / 0.24);
}

.phone::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 50%;
  width: 29%;
  height: 24px;
  border-radius: 999px;
  background: oklch(0.08 0.006 255);
  transform: translateX(-50%);
}

.phone-top {
  position: absolute;
  z-index: 2;
  top: 58px;
  left: 30px;
  right: 30px;
  display: flex;
  justify-content: space-between;
  color: oklch(0.7 0.01 255);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
}

.particle-field {
  position: absolute;
  inset: 21% 10% 19%;
  animation: breathe 8s cubic-bezier(0.76, 0, 0.24, 1) infinite alternate;
  transform-origin: center 70%;
}

.particle-field i {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: oklch(0.99 0.002 95);
  box-shadow: 0 0 9px oklch(0.99 0.002 95 / 0.9);
}

.particle-field i:nth-child(1) { left: 8%; top: 68%; width: 10px; height: 10px; }
.particle-field i:nth-child(2) { left: 17%; top: 48%; }
.particle-field i:nth-child(3) { left: 23%; top: 75%; width: 7px; height: 7px; }
.particle-field i:nth-child(4) { left: 31%; top: 38%; width: 3px; height: 3px; }
.particle-field i:nth-child(5) { left: 36%; top: 62%; width: 9px; height: 9px; }
.particle-field i:nth-child(6) { left: 42%; top: 84%; }
.particle-field i:nth-child(7) { left: 47%; top: 50%; width: 7px; height: 7px; }
.particle-field i:nth-child(8) { left: 52%; top: 71%; width: 11px; height: 11px; }
.particle-field i:nth-child(9) { left: 58%; top: 28%; width: 3px; height: 3px; }
.particle-field i:nth-child(10) { left: 63%; top: 58%; }
.particle-field i:nth-child(11) { left: 69%; top: 78%; width: 8px; height: 8px; }
.particle-field i:nth-child(12) { left: 75%; top: 43%; width: 4px; height: 4px; }
.particle-field i:nth-child(13) { left: 82%; top: 67%; width: 10px; height: 10px; }
.particle-field i:nth-child(14) { left: 89%; top: 53%; }
.particle-field i:nth-child(15) { left: 13%; top: 87%; }
.particle-field i:nth-child(16) { left: 28%; top: 91%; width: 4px; height: 4px; }
.particle-field i:nth-child(17) { left: 39%; top: 76%; width: 3px; height: 3px; }
.particle-field i:nth-child(18) { left: 49%; top: 92%; }
.particle-field i:nth-child(19) { left: 59%; top: 88%; width: 6px; height: 6px; }
.particle-field i:nth-child(20) { left: 72%; top: 93%; width: 4px; height: 4px; }
.particle-field i:nth-child(21) { left: 86%; top: 85%; width: 7px; height: 7px; }
.particle-field i:nth-child(22) { left: 7%; top: 35%; width: 3px; height: 3px; }
.particle-field i:nth-child(23) { left: 48%; top: 18%; width: 3px; height: 3px; }
.particle-field i:nth-child(24) { left: 93%; top: 76%; width: 3px; height: 3px; }

.phone-phase {
  position: absolute;
  z-index: 2;
  left: 30px;
  right: 30px;
  bottom: 43px;
  text-align: center;
}

.phone-phase span {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 6vw, 4rem);
  line-height: 1;
}

.phone-phase small {
  color: oklch(0.65 0.01 255);
  font-size: 0.64rem;
}

.statement {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: clamp(38px, 8vw, 130px);
  padding-block: clamp(100px, 14vw, 210px);
  border-top: 1px solid var(--line);
}

.statement h2 {
  max-width: 970px;
}

.statement p {
  max-width: 410px;
  align-self: end;
  color: var(--muted);
  font-size: 1.05rem;
}

.experience,
.free-section {
  padding-block: clamp(90px, 12vw, 170px);
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(80px, 0.35fr) 1.65fr;
  gap: clamp(24px, 5vw, 80px);
  align-items: start;
}

.section-heading > div {
  max-width: 880px;
}

.section-heading > div > p {
  max-width: 560px;
  margin-top: 24px;
  color: var(--muted);
}

.section-number {
  padding-top: 7px;
  color: var(--blue);
  font-size: 0.83rem;
  font-weight: 700;
}

.needs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: clamp(70px, 10vw, 140px) 0 clamp(76px, 9vw, 120px);
  font-family: var(--serif);
  font-size: clamp(3.4rem, 8vw, 8rem);
  letter-spacing: -0.05em;
  line-height: 0.88;
}

.needs-list span:not(:last-child)::after {
  content: " /";
  color: var(--line);
}

.split-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: clamp(40px, 8vw, 130px);
  align-items: start;
}

.split-copy p:last-child {
  max-width: 450px;
  color: var(--muted);
}

.large-copy {
  max-width: 760px;
  font-family: var(--serif);
  font-size: clamp(2.5rem, 4.8vw, 5rem);
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.feature-lines {
  margin-top: clamp(75px, 10vw, 135px);
  border-top: 1px solid var(--line);
}

.feature-lines article {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) 1.45fr;
  gap: 40px;
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
}

.feature-lines p {
  max-width: 640px;
  color: var(--muted);
}

.techniques {
  margin-inline: calc(clamp(20px, 4vw, 64px) * -1);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(60px, 9vw, 140px);
  padding: clamp(90px, 12vw, 170px) clamp(20px, 4vw, 64px);
  background: var(--paper-deep);
}

.techniques-intro p {
  max-width: 430px;
  margin-top: 26px;
  color: var(--muted);
}

.technique-list {
  border-top: 1px solid var(--line);
}

.technique-list div {
  min-height: 108px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "name pattern"
    "description description";
  gap: 4px 24px;
  align-content: center;
  border-bottom: 1px solid var(--line);
}

.technique-list span {
  grid-area: name;
  font-weight: 650;
}

.technique-list strong {
  grid-area: pattern;
  color: var(--blue);
  font-size: 0.82rem;
}

.technique-list small {
  grid-area: description;
  color: var(--muted);
}

.pro-section {
  margin-inline: calc(clamp(20px, 4vw, 64px) * -1);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(290px, 0.75fr);
  gap: clamp(65px, 10vw, 160px);
  padding: clamp(100px, 13vw, 190px) clamp(20px, 4vw, 64px);
  background:
    radial-gradient(circle at 78% 30%, oklch(0.45 0.09 245 / 0.2), transparent 30%),
    var(--night);
  color: oklch(0.96 0.006 90);
}

.pro-copy {
  max-width: 850px;
}

.pro-copy > p:not(.kicker) {
  max-width: 690px;
  margin-top: 34px;
  color: oklch(0.72 0.012 255);
  font-size: 1.04rem;
}

.pro-copy .pro-note {
  font-size: 0.82rem;
}

.pro-list {
  align-self: end;
  border-top: 1px solid oklch(0.95 0.006 90 / 0.22);
}

.pro-list span {
  display: block;
  padding-block: 19px;
  border-bottom: 1px solid oklch(0.95 0.006 90 / 0.22);
  color: oklch(0.84 0.008 90);
}

.privacy-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(55px, 10vw, 170px);
  padding-block: clamp(100px, 14vw, 200px);
  border-bottom: 1px solid var(--line);
}

.privacy-mark {
  font-family: var(--serif);
  font-size: clamp(4rem, 8vw, 8.7rem);
  letter-spacing: -0.055em;
  line-height: 0.79;
}

.privacy-copy {
  max-width: 660px;
}

.privacy-copy h2 {
  font-size: clamp(2.8rem, 5vw, 5.3rem);
}

.privacy-copy p {
  margin-top: 28px;
  color: var(--muted);
}

.privacy-copy .text-link {
  margin-top: 32px;
}

.safety-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(50px, 10vw, 170px);
  padding-block: clamp(70px, 9vw, 120px);
  border-bottom: 1px solid var(--line);
}

.safety-section h2 {
  font-size: clamp(2.4rem, 4.5vw, 4.6rem);
}

.safety-section p {
  max-width: 570px;
  color: var(--muted);
}

.closing {
  min-height: 650px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-block: clamp(100px, 15vw, 220px);
}

.closing p {
  margin-top: 28px;
  color: var(--muted);
}

.closing .text-link {
  margin-top: 28px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 35px;
  align-items: end;
  padding-block: 34px 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.footer-brand span {
  display: block;
  color: var(--ink);
  font-weight: 650;
}

.footer-brand small {
  display: block;
  margin-top: 4px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
}

.site-footer p {
  white-space: nowrap;
}

.content-page {
  width: min(100%, 1180px);
  display: grid;
  grid-template-columns: minmax(200px, 0.42fr) minmax(0, 1fr);
  gap: clamp(60px, 10vw, 150px);
  padding-block: clamp(75px, 10vw, 130px) clamp(110px, 14vw, 190px);
}

.page-intro {
  position: sticky;
  top: 40px;
  align-self: start;
}

.page-intro .kicker {
  margin-bottom: 22px;
}

.page-intro h1 {
  font-size: clamp(3.8rem, 7vw, 7.6rem);
  line-height: 0.84;
}

.page-intro > p:not(.kicker) {
  max-width: 330px;
  margin-top: 28px;
  color: var(--muted);
}

.legal-copy,
.support-copy {
  max-width: 760px;
  padding-top: 7px;
}

.legal-copy > p:first-child,
.support-copy > p:first-child {
  color: var(--ink);
  font-size: 1.15rem;
}

.legal-copy h2,
.support-copy h2 {
  margin: 58px 0 17px;
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.legal-copy p,
.legal-copy li,
.support-copy p,
.support-copy li {
  color: var(--muted);
}

.legal-copy p + p,
.support-copy p + p {
  margin-top: 16px;
}

.legal-copy ul,
.support-copy ul {
  margin: 16px 0 0;
  padding-left: 1.2rem;
}

.legal-copy li + li,
.support-copy li + li {
  margin-top: 8px;
}

.notice {
  margin-top: 52px;
  padding: 23px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

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

.support-contact {
  margin: 36px 0 60px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.support-contact a {
  display: inline-block;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.8rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.support-contact small {
  display: block;
  margin-top: 13px;
  color: var(--muted);
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
  color: var(--ink);
  font-weight: 650;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  color: var(--blue);
  font-size: 1.4rem;
  font-weight: 400;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-answer {
  max-width: 680px;
  padding: 0 40px 25px 0;
}

.not-found {
  min-height: calc(100svh - 180px);
  display: grid;
  place-items: center;
  text-align: center;
}

.not-found h1 {
  font-size: clamp(7rem, 20vw, 17rem);
  color: var(--line);
}

.not-found h2 {
  margin-top: -0.2em;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
}

.not-found p {
  max-width: 460px;
  margin: 24px auto 0;
  color: var(--muted);
}

.not-found .store-note {
  margin-top: 30px;
  color: var(--ink);
  text-decoration: none;
}

@keyframes breathe {
  0% {
    opacity: 0.58;
    transform: scale(0.72) translateY(9%);
  }
  100% {
    opacity: 1;
    transform: scale(1.08) translateY(-4%);
  }
}

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

  .hero-copy {
    max-width: 760px;
  }

  .breathing-object {
    width: min(78vw, 430px);
    margin-inline: auto;
  }

  .statement,
  .split-copy,
  .techniques,
  .pro-section,
  .privacy-section,
  .safety-section {
    grid-template-columns: 1fr;
  }

  .statement p,
  .safety-section p {
    align-self: auto;
  }

  .techniques {
    gap: 65px;
  }

  .pro-list {
    max-width: 650px;
  }

  .site-footer {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .content-page {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .page-intro {
    position: static;
  }
}

@media (max-width: 640px) {
  .site-shell {
    padding-inline: 18px;
  }

  .site-header {
    min-height: auto;
    align-items: flex-start;
    padding-block: 18px;
  }

  .site-nav {
    max-width: 180px;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px 16px;
    line-height: 1.3;
  }

  .site-nav a[href="#pro"] {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-block: 74px 100px;
  }

  h1 {
    font-size: clamp(4rem, 19vw, 6.4rem);
  }

  .hero-lede {
    margin-top: 32px;
  }

  .breathing-object {
    width: min(88vw, 380px);
  }

  .statement,
  .experience,
  .free-section {
    padding-block: 90px;
  }

  .statement {
    gap: 32px;
  }

  .section-heading {
    grid-template-columns: 40px 1fr;
  }

  .needs-list {
    margin-block: 70px;
  }

  .feature-lines article {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .techniques,
  .pro-section {
    margin-inline: -18px;
    padding-inline: 18px;
  }

  .technique-list div {
    grid-template-columns: 1fr auto;
  }

  .privacy-mark {
    font-size: 25vw;
  }

  .site-footer nav {
    gap: 12px 18px;
  }

  .content-page {
    padding-top: 70px;
  }

  .page-intro h1 {
    font-size: clamp(3.6rem, 17vw, 5.8rem);
  }

  .support-contact a {
    font-size: clamp(1.65rem, 8.5vw, 2.6rem);
  }
}

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

  .particle-field {
    animation: none;
  }
}