:root {
  --ink: #292526;
  --ink-soft: #665d5f;
  --cream: #f7f3ef;
  --paper: #fcfaf7;
  --warm-gray: #e7e0dc;
  --mauve: #8d6d75;
  --mauve-deep: #6d4f58;
  --mauve-pale: #eee5e7;
  --bronze: #a7835f;
  --line: rgba(41, 37, 38, 0.15);
  --white: #fff;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  --sans: "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

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

.svg-filters {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

.header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  height: 88px;
  padding: 0 clamp(24px, 5vw, 76px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
  color: var(--white);
}

.logo {
  display: inline-flex;
  gap: 11px;
  align-items: center;
  width: max-content;
  line-height: 1;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 64px;
  height: 52px;
  overflow: hidden;
  background: var(--white);
}

.logo-mark img {
  display: block;
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.header .logo-mark {
  width: 56px;
  height: 48px;
  overflow: hidden;
  background: transparent;
  transform: translateY(-7px);
}

.header .logo-mark img {
  width: 56px;
  height: 56px;
  filter: url("#ck-logo-knockout");
}

.logo-name {
  font-size: 8px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.16em;
}

.header nav {
  display: flex;
  gap: 35px;
  font-size: 11px;
  letter-spacing: 0.06em;
}

.header nav a,
.header-buy {
  transition: opacity 180ms ease;
}

.header nav a:hover,
.header-buy:hover {
  opacity: 0.62;
}

.header-buy {
  justify-self: end;
  font-size: 9px;
  letter-spacing: 0.18em;
}

.header-buy span {
  margin-left: 9px;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.72fr);
  align-items: center;
  min-height: 820px;
  overflow: hidden;
  color: var(--white);
  background: #3a302d;
}

.hero-backdrop,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-backdrop {
  background-image: url("assets/salon-hero-with-product.webp");
  background-position: center;
  background-size: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(36, 28, 27, 0.83) 0%, rgba(36, 28, 27, 0.57) 45%, rgba(36, 28, 27, 0.08) 76%),
    linear-gradient(0deg, rgba(36, 28, 27, 0.35), transparent 44%);
}

.hero-copy {
  position: relative;
  z-index: 3;
  width: min(920px, 74vw);
  max-width: none;
  padding: 150px 5vw 90px max(7vw, calc((100vw - 1440px) / 2 + 65px));
}

.kicker {
  margin: 0 0 23px;
  color: var(--mauve);
  font-size: 9px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.23em;
}

.kicker.light {
  color: #d8bab0;
}

.hero-product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  margin: -6px 0 20px;
}

.hero-product-name {
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
  font-family: var(--serif);
  font-size: clamp(14px, 1.35vw, 19px);
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.09em;
}

.hero-patent {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 9px;
  border: 1px solid rgba(224, 189, 178, 0.65);
  color: #e0bdb2;
  font-size: 9px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.heading-line {
  display: block;
  white-space: nowrap;
}

.mobile-line {
  display: inline;
}

.narrow-line {
  display: inline;
}

.hero h1,
.statement h2,
.problem h2,
.solution h2,
.salon-message h2,
.must-have h2,
.purchase h2,
.faq h2,
.closing h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
}

.hero h1 {
  font-size: clamp(44px, 4.5vw, 66px);
  line-height: 1.42;
  letter-spacing: 0.06em;
}

.hero h1 em {
  color: #e0bdb2;
  font-style: normal;
}

.hero-lead {
  margin: 32px 0 0;
  color: rgba(255, 255, 255, 0.77);
  font-size: 14px;
  line-height: 2.15;
}

.hero-actions {
  display: flex;
  gap: 30px;
  align-items: center;
  margin-top: 45px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-width: 220px;
  padding: 19px 24px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.08em;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-light {
  color: var(--ink);
  background: var(--white);
}

.button-light:hover {
  color: var(--white);
  background: var(--mauve);
}

.hero-link {
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.hero-link span {
  margin-left: 8px;
}

.hero-product {
  position: relative;
  z-index: 3;
  align-self: end;
  width: min(42vw, 650px);
  margin: 0 4.5vw 80px 0;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.29);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(13px);
}

.hero-product img {
  display: block;
  width: 110%;
  height: auto;
  margin: 15px 0 0 -10%;
  mix-blend-mode: screen;
  filter: drop-shadow(16px 27px 18px rgba(27, 20, 19, 0.34));
}

.hero-product-label {
  position: absolute;
  top: 22px;
  left: 24px;
  font-size: 8px;
  letter-spacing: 0.2em;
}

.hero-badge {
  position: absolute;
  right: -25px;
  bottom: 30px;
  display: grid;
  place-content: center;
  width: 105px;
  height: 105px;
  border-radius: 50%;
  color: var(--ink);
  text-align: center;
  background: #d8b7ab;
}

.hero-badge strong {
  font-family: Georgia, serif;
  font-size: 19px;
  line-height: 1;
}

.hero-badge span {
  margin-top: 4px;
  font-size: 7px;
  letter-spacing: 0.13em;
}

.statement {
  display: grid;
  grid-template-columns: 0.42fr 1.2fr 0.72fr;
  gap: 70px;
  align-items: start;
  max-width: 1420px;
  margin: 0 auto;
  padding: 135px 6vw;
}

.section-no {
  margin: 7px 0 0;
  color: #96898a;
  font-size: 8px;
  letter-spacing: 0.17em;
}

.statement h2,
.solution h2,
.faq h2 {
  font-size: clamp(34px, 3.5vw, 52px);
  line-height: 1.55;
  letter-spacing: 0.04em;
}

.statement-copy {
  margin: 46px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.problem {
  padding: 130px max(6vw, calc((100vw - 1440px) / 2 + 60px));
  color: var(--white);
  background: var(--mauve-deep);
}

.problem-heading {
  display: grid;
  grid-template-columns: 1.1fr 0.6fr;
  column-gap: 130px;
  align-items: end;
  margin-bottom: 65px;
}

.problem h2 {
  font-size: clamp(34px, 3.2vw, 48px);
}

.problem-heading .kicker {
  grid-column: 1 / -1;
}

.problem h2 {
  font-size: clamp(36px, 4vw, 58px);
  line-height: 1.52;
  letter-spacing: 0.05em;
}

.problem-heading > p:last-child {
  margin: 0 0 6px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 12px;
}

.problem-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1.12fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.14);
}

.problem-cards article {
  position: relative;
  min-height: 440px;
  padding: 28px;
  background: #62474f;
}

.problem-cards .health-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 124px;
  background: #30292a;
}

.card-no {
  position: absolute;
  top: 25px;
  right: 27px;
  font-size: 8px;
  letter-spacing: 0.17em;
}

.dust-visual {
  position: relative;
  height: 245px;
  margin-bottom: 28px;
  overflow: hidden;
  background: #765963;
}

.dust-table::after {
  position: absolute;
  right: 9%;
  bottom: 12%;
  left: 9%;
  height: 22%;
  border-top: 1px solid rgba(255, 255, 255, 0.48);
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.06));
  content: "";
  transform: perspective(250px) rotateX(52deg);
}

.dust-visual i {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
  box-shadow:
    35px 17px 0 -1px rgba(255, 255, 255, 0.45),
    72px -29px 0 -1px rgba(255, 255, 255, 0.35),
    -42px 41px 0 -1px rgba(255, 255, 255, 0.5);
}

.dust-visual i:nth-child(1) { left: 20%; top: 66%; }
.dust-visual i:nth-child(2) { left: 43%; top: 45%; }
.dust-visual i:nth-child(3) { left: 72%; top: 70%; }
.dust-visual i:nth-child(4) { left: 60%; top: 28%; }
.dust-visual i:nth-child(5) { left: 29%; top: 24%; }
.dust-visual i:nth-child(6) { left: 82%; top: 37%; }
.dust-visual i:nth-child(7) { left: 50%; top: 76%; }
.dust-visual i:nth-child(8) { left: 13%; top: 41%; }
.dust-visual i:nth-child(9) { left: 88%; top: 19%; }

.dust-air {
  background: radial-gradient(circle at 50% 70%, #8d7078, #60464e);
}

.dust-air::after {
  position: absolute;
  inset: 26% 17%;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  content: "";
  box-shadow:
    0 0 0 35px rgba(255, 255, 255, 0.025),
    0 0 0 70px rgba(255, 255, 255, 0.018);
}

.problem-cards h3 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
}

.pain-card-title {
  white-space: nowrap;
}

.problem-cards p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
}

.health-card .health-label {
  margin: 0 0 auto;
  color: #d5b3aa;
  font-size: 8px;
  letter-spacing: 0.2em;
}

.health-card h3 {
  max-width: 380px;
  font-size: 27px;
  line-height: 1.55;
}

.health-card a {
  align-self: flex-start;
  margin-top: 25px;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 9px;
  letter-spacing: 0.06em;
}

.health-card a span {
  margin-left: 6px;
}

.health-note {
  display: grid;
  grid-template-columns: 0.35fr 1fr;
  gap: 50px;
  padding: 31px 0 0;
}

.health-note span {
  color: #d5b3aa;
  font-size: 8px;
  letter-spacing: 0.2em;
}

.health-note p {
  max-width: 780px;
  margin: 0;
  color: rgba(255, 255, 255, 0.57);
  font-size: 10px;
}

.solution {
  padding: 135px max(6vw, calc((100vw - 1440px) / 2 + 60px));
  background: var(--cream);
}

.solution-intro {
  display: grid;
  grid-template-columns: 1fr 0.65fr;
  gap: 100px;
  align-items: end;
  margin-bottom: 70px;
}

.solution-intro > p {
  margin: 0 0 7px;
  color: var(--ink-soft);
  font-size: 12px;
}

.solution-showcase {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  min-height: 650px;
}

.product-stage {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: var(--warm-gray);
}

.product-stage img {
  position: relative;
  z-index: 2;
  width: 82%;
  height: auto;
  filter: drop-shadow(13px 29px 19px rgba(66, 49, 48, 0.18));
}

.stage-feature-meta {
  position: absolute;
  z-index: 4;
  top: 34px;
  left: 36px;
  max-width: 280px;
}

.stage-feature-meta p {
  margin: 0 0 13px;
  color: var(--mauve-deep);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.stage-feature-meta strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.55;
}

.stage-feature-meta span {
  color: var(--ink-soft);
  font-size: 9px;
  letter-spacing: 0.04em;
}

.stage-circle {
  position: absolute;
  border: 1px solid rgba(141, 109, 117, 0.21);
  border-radius: 50%;
}

.stage-circle.one {
  width: 580px;
  height: 580px;
}

.stage-circle.two {
  width: 390px;
  height: 390px;
}

.air-label {
  position: absolute;
  z-index: 3;
  padding: 8px 12px;
  border: 1px solid rgba(41, 37, 38, 0.19);
  color: var(--mauve-deep);
  font-size: 7px;
  letter-spacing: 0.18em;
}

.label-side {
  top: 24%;
  right: 9%;
}

.label-bottom {
  bottom: 24%;
  left: 9%;
}

.solution-specs {
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

.solution-specs article {
  display: grid;
  grid-template-columns: 45px 1fr;
  gap: 20px;
  align-content: center;
  flex: 1;
  padding: 35px 42px;
  border-bottom: 1px solid var(--line);
}

.solution-specs article:last-child {
  border-bottom: 0;
}

.solution-specs span {
  color: var(--mauve);
  font-family: Georgia, serif;
  font-size: 10px;
}

.solution-specs h3,
.feature-row h3 {
  margin: 0 0 9px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
}

.solution-specs p,
.feature-row p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.folded-showcase {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  min-height: 520px;
  margin-top: 15px;
}

.folded-preview {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 520px;
  overflow: hidden;
  background: var(--mauve-pale);
}

.folded-preview::after {
  position: absolute;
  z-index: 3;
  inset: 0;
  background: linear-gradient(90deg, rgba(244, 237, 240, 0.98) 0%, rgba(244, 237, 240, 0.88) 30%, rgba(244, 237, 240, 0) 62%);
  content: "";
  pointer-events: none;
}

.folded-preview-copy {
  position: absolute;
  z-index: 4;
  top: 38px;
  left: 38px;
  max-width: 320px;
}

.folded-preview-copy > p {
  margin: 0 0 19px;
  color: var(--mauve-deep);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.folded-preview-copy h3 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(24px, 2vw, 28px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0.04em;
}

.folded-preview-copy > span {
  display: block;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 2;
}

.folded-preview-visual {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  min-width: 0;
  background: rgba(255, 255, 255, 0.38);
}

.folded-preview-visual img {
  width: 135%;
  height: auto;
  filter: drop-shadow(10px 20px 18px rgba(66, 49, 48, 0.14));
  transform: translateX(7%);
}

.feature-row {
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

.feature-row article {
  display: grid;
  grid-template-columns: 45px 1fr;
  gap: 20px;
  align-content: center;
  flex: 1;
  padding: 35px 42px;
  border-bottom: 1px solid var(--line);
}

.feature-row article:last-child {
  border-bottom: 0;
}

.feature-number {
  color: var(--mauve);
  font-family: Georgia, serif;
  font-size: 10px;
}

.usage-guide {
  padding: 135px max(6vw, calc((100vw - 1440px) / 2 + 60px));
  background: var(--paper);
}

.guide-heading {
  display: grid;
  grid-template-columns: 1fr 0.65fr;
  gap: 100px;
  align-items: end;
  margin-bottom: 68px;
}

.guide-heading h2,
.product-detail-strip h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 3.5vw, 52px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0.04em;
}

.guide-heading > p {
  margin: 0 0 7px;
  color: var(--ink-soft);
  font-size: 12px;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.guide-steps article {
  min-height: 275px;
  padding: 31px 28px;
  border-right: 1px solid var(--line);
}

.guide-steps article:last-child {
  border-right: 0;
}

.guide-steps article > span {
  color: var(--mauve);
  font-family: Georgia, serif;
  font-size: 10px;
}

.guide-steps h3,
.detail-items h3 {
  margin: 55px 0 10px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
}

.guide-steps p,
.detail-items p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.guide-steps small {
  display: block;
  margin-top: 16px;
  color: #8b8080;
  font-size: 8px;
  line-height: 1.7;
}

.guide-steps .guide-recommendation {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(141, 109, 117, 0.25);
  color: var(--mauve-deep);
  font-size: 10px;
}

.guide-recommendation strong {
  display: block;
  margin-bottom: 5px;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.trademark-note {
  margin: 12px 0 0;
  color: #8b8080;
  font-size: 8px;
  line-height: 1.7;
}

.product-detail-strip {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
  align-items: center;
  margin-top: 75px;
  padding: 62px;
  background: var(--mauve-pale);
}

.product-detail-strip h2 {
  font-size: clamp(27px, 2.8vw, 39px);
}

.detail-items article {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 20px;
  padding: 21px 0;
  border-top: 1px solid rgba(41, 37, 38, 0.13);
}

.detail-items article:last-child {
  border-bottom: 1px solid rgba(41, 37, 38, 0.13);
}

.detail-items article > span {
  color: var(--mauve);
  font-family: Georgia, serif;
  font-size: 9px;
}

.detail-items h3 {
  margin: -3px 0 5px;
  font-size: 16px;
}

.care-panel {
  margin-top: 16px;
  color: var(--white);
  background: #332d2e;
}

.care-panel summary {
  position: relative;
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: center;
  min-height: 92px;
  padding: 20px 70px 20px 35px;
  font-family: var(--serif);
  font-size: 16px;
  cursor: pointer;
  list-style: none;
}

.care-panel summary::-webkit-details-marker {
  display: none;
}

.care-panel summary > span {
  color: #d5b3aa;
  font-family: var(--sans);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.care-panel summary::after {
  position: absolute;
  right: 34px;
  color: #d5b3aa;
  font-family: var(--sans);
  font-size: 19px;
  content: "+";
}

.care-panel[open] summary::after {
  content: "−";
}

.care-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 55px;
  padding: 5px 35px 37px 215px;
}

.care-grid p {
  margin: 0;
  padding: 17px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.65);
  font-size: 10px;
}

.care-grid p > span {
  display: inline-block;
  width: 32px;
  color: #d5b3aa;
  font-family: Georgia, serif;
  font-size: 9px;
}

.salon-scene {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  min-height: 700px;
  background: #342c2b;
}

.salon-image {
  min-height: 650px;
  background:
    linear-gradient(90deg, transparent 72%, rgba(52, 44, 43, 0.42)),
    url("assets/salon-hero-with-product.webp") center / cover;
}

.salon-message {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 3.5vw;
  color: var(--white);
}

.salon-message h2 {
  font-size: clamp(30px, 2.7vw, 42px);
  line-height: 1.62;
  letter-spacing: 0.04em;
}

.salon-message > p:not(.kicker) {
  margin: 29px 0 38px;
  color: rgba(255, 255, 255, 0.63);
  font-size: 11px;
}

.salon-message ul {
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  list-style: none;
}

.salon-message li {
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 11px;
}

.salon-message li span {
  display: inline-block;
  width: 38px;
  color: #d5b3aa;
  font-family: Georgia, serif;
  font-size: 9px;
}

.must-have {
  padding: 140px 25px;
  text-align: center;
  background: var(--paper);
}

.must-have h2 {
  font-size: clamp(38px, 4vw, 60px);
  line-height: 1.55;
  letter-spacing: 0.06em;
}

.must-have > p:last-child {
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.purchase {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  max-width: 1260px;
  min-height: 650px;
  margin: 0 auto 140px;
  background: var(--cream);
  box-shadow: 0 24px 70px rgba(61, 45, 45, 0.09);
}

.purchase-product {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 50px;
  background: var(--mauve-pale);
}

.purchase-product::before {
  position: absolute;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(141, 109, 117, 0.2);
  border-radius: 50%;
  content: "";
}

.purchase-product img {
  position: relative;
  z-index: 2;
  width: 122%;
  height: auto;
  filter: drop-shadow(14px 28px 18px rgba(64, 46, 47, 0.16));
}

.purchase-overline,
.purchase-product > span {
  position: absolute;
  z-index: 3;
  margin: 0;
  font-size: 7px;
  letter-spacing: 0.19em;
}

.purchase-overline {
  top: 28px;
  left: 31px;
}

.purchase-product > span {
  right: 31px;
  bottom: 28px;
  color: var(--mauve-deep);
}

.purchase-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 65px clamp(38px, 5vw, 75px);
}

.purchase h2 {
  font-size: clamp(29px, 3vw, 42px);
  line-height: 1.58;
  letter-spacing: 0.03em;
}

.purchase-copy {
  margin: 24px 0 30px;
  color: var(--ink-soft);
  font-size: 11px;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 21px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.price > span {
  font-size: 11px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.05em;
}

.price strong {
  font-family: Georgia, serif;
  font-size: 35px;
  font-weight: 400;
}

.price small {
  margin-left: 7px;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
}

.button-dark {
  width: 100%;
  margin-top: 28px;
  color: var(--white);
  background: var(--mauve-deep);
}

.button-dark:hover {
  background: var(--ink);
}

.fine-print {
  margin: 11px 0 0;
  color: #8c8080;
  font-size: 8px;
}

.faq {
  display: grid;
  grid-template-columns: 0.62fr 1.38fr;
  gap: 120px;
  padding: 120px max(6vw, calc((100vw - 1440px) / 2 + 60px));
  background: var(--cream);
}

.faq-heading {
  position: sticky;
  top: 55px;
  align-self: start;
}

.faq h2 {
  font-size: clamp(32px, 3vw, 46px);
}

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

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

.faq-list summary {
  position: relative;
  display: grid;
  grid-template-columns: 55px 1fr;
  align-items: center;
  min-height: 88px;
  padding: 12px 42px 12px 0;
  font-size: 13px;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary span {
  color: var(--mauve);
  font-family: Georgia, serif;
  font-size: 9px;
}

.faq-list summary::after {
  position: absolute;
  right: 5px;
  color: var(--mauve);
  font-size: 19px;
  content: "+";
}

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

.faq-list details p {
  margin: -6px 35px 30px 55px;
  color: var(--ink-soft);
  font-size: 11px;
}

.sources {
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 50px;
  padding: 42px max(6vw, calc((100vw - 1440px) / 2 + 60px));
  border-top: 1px solid var(--line);
  background: var(--cream);
}

.sources p {
  margin: 0;
  color: var(--mauve);
  font-size: 8px;
  letter-spacing: 0.18em;
}

.sources div {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sources a {
  color: var(--ink-soft);
  font-size: 9px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.closing {
  padding: 135px 25px;
  color: var(--white);
  text-align: center;
  background:
    radial-gradient(circle at 50% 130%, rgba(141, 109, 117, 0.42), transparent 50%),
    #2f292a;
}

.closing h2 {
  margin-bottom: 39px;
  font-size: clamp(38px, 4.5vw, 64px);
  line-height: 1.55;
  letter-spacing: 0.06em;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  padding: 48px max(6vw, calc((100vw - 1440px) / 2 + 60px));
  color: #807576;
  font-size: 8px;
  letter-spacing: 0.1em;
}

.footer-logo {
  color: var(--ink);
}

.footer-logo .logo-mark {
  background: transparent;
  transform: translateY(-7px);
}

.footer-logo .logo-mark img {
  filter: url("#ck-logo-footer-knockout");
}

footer p {
  margin: 0;
}

footer p:last-child {
  justify-self: end;
}

@media (max-width: 1020px) {
  .header {
    grid-template-columns: 1fr auto;
  }

  .header nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 960px;
  }

  .hero-copy {
    align-self: start;
    width: auto;
    max-width: 730px;
    padding: 150px 8vw 40px;
  }

  .hero-product {
    position: absolute;
    right: 5vw;
    bottom: 60px;
    width: min(60vw, 590px);
    margin: 0;
  }

  .statement {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 105px 8vw;
  }

  .statement-copy {
    max-width: 570px;
    margin: 0;
  }

  .problem,
  .solution,
  .usage-guide,
  .faq {
    padding: 105px 8vw;
  }

  .problem-heading,
  .solution-intro,
  .guide-heading {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .problem-heading > p:last-child,
  .solution-intro > p,
  .guide-heading > p {
    max-width: 620px;
  }

  .problem-cards {
    grid-template-columns: 1fr 1fr;
  }

  .problem-cards .health-card {
    grid-column: 1 / -1;
    min-height: 360px;
  }

  .solution-showcase {
    grid-template-columns: 1fr;
  }

  .folded-showcase {
    grid-template-columns: 1fr;
  }

  .product-stage {
    min-height: 590px;
  }

  .solution-specs article {
    min-height: 170px;
  }

  .guide-steps {
    grid-template-columns: 1fr 1fr;
  }

  .guide-steps article:nth-child(2) {
    border-right: 0;
  }

  .guide-steps article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .product-detail-strip {
    grid-template-columns: 1fr;
    gap: 38px;
    padding: 50px;
  }

  .salon-scene {
    grid-template-columns: 1fr;
  }

  .salon-image {
    min-height: 570px;
  }

  .salon-message {
    padding: 90px 8vw;
  }

  .purchase {
    grid-template-columns: 1fr;
    margin-right: 8vw;
    margin-left: 8vw;
  }

  .purchase-product {
    min-height: 580px;
  }

  .faq {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .faq-heading {
    position: static;
  }
}

@media (max-width: 680px) {
  .header {
    height: 76px;
    padding: 0 22px;
  }

  .header-buy {
    font-size: 8px;
  }

  .hero {
    min-height: 820px;
  }

  .hero-backdrop {
    background-position: 66% center;
  }

  .hero-shade {
    background: linear-gradient(180deg, rgba(36, 28, 27, 0.83), rgba(36, 28, 27, 0.42) 62%, rgba(36, 28, 27, 0.75));
  }

  .hero-copy {
    padding: 118px 24px 30px;
  }

  .hero h1 {
    font-size: clamp(20px, 7vw, 29px);
    line-height: 1.5;
  }

  .mobile-line {
    display: block;
  }

  .hero-product-meta {
    max-width: 310px;
    margin-bottom: 16px;
  }

  .hero-product-name {
    font-size: 13px;
  }

  .hero-lead {
    font-size: 12px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 17px;
    margin-top: 32px;
  }

  .button {
    width: 100%;
  }

  .hero-link {
    align-self: flex-start;
  }

  .hero-product {
    right: 24px;
    bottom: 46px;
    width: calc(100% - 48px);
    padding: 19px;
  }

  .hero-product img {
    width: 96%;
    margin: 22px auto 0;
  }

  .hero-badge {
    right: -7px;
    bottom: 13px;
    width: 78px;
    height: 78px;
  }

  .statement {
    padding: 82px 24px;
  }

  .statement h2,
  .solution h2,
  .guide-heading h2,
  .faq h2 {
    font-size: 26px;
  }

  .problem,
  .solution,
  .usage-guide,
  .faq {
    padding: 82px 24px;
  }

  .problem h2 {
    font-size: clamp(17px, 6.1vw, 27px);
  }

  .problem-cards .pain-card-title {
    font-size: clamp(12px, 4.25vw, 18px);
  }

  .problem-cards .health-card h3 {
    font-size: clamp(14px, 5vw, 20px);
  }

  .problem-cards {
    grid-template-columns: 1fr;
  }

  .problem-cards .health-card {
    grid-column: auto;
    padding-bottom: 64px;
  }

  .problem-cards article {
    min-height: 420px;
  }

  .health-note {
    grid-template-columns: 1fr;
    gap: 13px;
  }

  .product-stage {
    min-height: 420px;
  }

  .product-stage img {
    width: 94%;
  }

  .stage-feature-meta {
    top: 25px;
    left: 25px;
    max-width: 245px;
  }

  .stage-feature-meta strong {
    font-size: 18px;
  }

  .stage-circle.one {
    width: 380px;
    height: 380px;
  }

  .stage-circle.two {
    width: 260px;
    height: 260px;
  }

  .solution-specs article {
    min-height: 160px;
    padding: 30px 25px;
  }

  .folded-preview {
    min-height: 420px;
  }

  .folded-preview-copy {
    top: 25px;
    left: 25px;
    max-width: 245px;
  }

  .folded-preview-copy h3 {
    font-size: clamp(21px, 6.2vw, 26px);
  }

  .folded-preview-visual {
    min-height: 0;
  }

  .folded-preview-visual img {
    width: 145%;
    transform: translateX(5%);
  }

  .feature-row article {
    min-height: 160px;
    padding: 30px 25px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .feature-row article:last-child {
    border-bottom: 0;
  }

  .guide-steps {
    grid-template-columns: 1fr;
  }

  .guide-steps article,
  .guide-steps article:nth-child(2) {
    min-height: 230px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .guide-steps article:last-child {
    border-bottom: 0;
  }

  .product-detail-strip {
    margin-top: 55px;
    padding: 38px 25px;
  }

  .product-detail-strip h2 {
    font-size: 24px;
  }

  .guide-heading h2,
  .purchase h2 {
    font-size: 24px;
  }

  .care-panel summary {
    grid-template-columns: 1fr;
    gap: 8px;
    min-height: 105px;
    padding: 20px 55px 20px 25px;
  }

  .care-grid {
    grid-template-columns: 1fr;
    padding: 0 25px 30px;
  }

  .salon-image {
    min-height: 420px;
    background-position: 66% center;
  }

  .salon-message {
    padding: 80px 24px;
  }

  .salon-message h2 {
    font-size: clamp(18px, 6.5vw, 26px);
  }

  .must-have {
    padding: 95px 24px;
  }

  .must-have h2 {
    font-size: 26px;
  }

  .purchase {
    margin: 0 0 90px;
  }

  .purchase-product {
    min-height: 410px;
    padding: 25px;
  }

  .purchase-info {
    padding: 58px 25px;
  }

  .price strong {
    font-size: 30px;
  }

  .faq-list summary {
    grid-template-columns: 44px 1fr;
    min-height: 96px;
    padding-right: 34px;
    font-size: 12px;
  }

  .faq-list details p {
    margin-left: 44px;
  }

  .sources {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 35px 24px;
  }

  .closing {
    padding: 95px 24px;
  }

  .closing h2 {
    font-size: 28px;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 40px 24px;
  }

  footer p:nth-child(2) {
    display: none;
  }

  footer p:last-child {
    justify-self: start;
  }
}

@media (max-width: 420px) {
  .health-card h3 {
    font-size: 20px;
  }

  .must-have h2 {
    font-size: 23px;
  }

  .closing h2 {
    font-size: 25px;
  }
}

@media (max-width: 360px) {
  .narrow-line {
    display: block;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}