:root {
  --ink: #333;
  --ink-soft: #665c61;
  --line: #e3e3e3;
  --surface: #fffdfb;
  --surface-alt: #faf5f3;
  --brand: #FF66A6;
  --brand-dark: #FF66A6;
  --low: #1197ca;
  --low-soft: #edf7fa;
  --mid: #d0276e;
  --mid-soft: #fff1f6;
  --high: #8368c4;
  --high-soft: #f2eff6;
  --ok: #157a4d;
  --ng: #b12b35;
  --page: 1120px;

}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: var(--font_ja);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

.wrap {
  position: relative;
  width: min(var(--page), calc(100% - 48px));
  margin-inline: auto;
}

.wrap-narrow {
  position: relative;
  width: min(var(--page), calc(100% - 48px));
  margin-inline: auto;
  max-width: 880px;
}

section {
  padding: 104px 0;
}

section[id] {
  scroll-margin-top: -50px;
}

.bg-gray {
  background: var(--surface-alt);
}

.site-bar {
  display: flex;
  min-height: 68px;
  padding: 11px max(24px, calc((100vw - var(--page)) / 2));
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid #dedede;
  border-color: #eadfe2;
  background: rgba(255, 253, 251, .98);
}

.site-bar__brand {
  display: inline-flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.1;
  color: #4c3d44;
}

.site-bar__brand span {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 23px;
  letter-spacing: .08em;
  color: #4c3d44;
}

.site-bar__brand small {
  margin-top: 6px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .13em;
}

.site-bar__shop {
  display: inline-flex;
  min-height: 44px;
  padding: 0 20px;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s ease;
  border-radius: 999px;
  background: #6d505e;
}

.site-bar__shop:hover {
  background: var(--brand-dark);
}

.kv {
  position: relative;
  overflow: hidden;
  color: var(--ink);
   background: #fff
}

.kv::after {
  position: absolute;
  width: 520px;
  height: 520px;
  border: 100px solid rgba(255, 255, 255, .035);
  border-radius: 50%;
  content: "";
  right: -150px;
  bottom: -270px;
  border-color: rgb(0 0 0 / 6%);
}

.kv-inner {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(var(--page), calc(100% - 48px));
  min-height: 620px;
  margin-inline: auto;
  padding: 72px 0;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr);
  align-items: center;
  gap: 64px;
}

.kv-text-col {
  min-width: 0;
}

.kv .en-title {
  margin: 0 0 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brand-dark);
}

.kv h1 {
  margin: 0;
  font-size: clamp(30px, 4rem, 45px);
  font-weight: 800;
  letter-spacing: -.045em;
  line-height: 1.15;

}

.kv .highlight {
  position: relative;
  display: inline-block;
  padding-bottom: 18px;
}

.kv .highlight::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 88px;
  height: 5px;
  background: var(--brand);
  content: "";
}

.kv p {
  max-width: 620px;
  margin: 30px 0 0;
  font-size: 17px;
  line-height: 2;
  color: #62565b;
}

.btn-kv {
  display: inline-flex;
  min-height: 56px;
  margin-top: 32px;
  padding: 0 26px;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  transition: background .2s ease, transform .2s ease;
  border-radius: 999px;
  color: #fff;
  background: var(--brand-dark);
  box-shadow: 0 10px 24px rgba(169, 71, 109, .18);
}

.btn-kv:hover {
  transform: translateY(-2px);
  color: #fff;
  background: #8d385b;
}

.visc-tags {
  display: flex;
  margin-top: 34px;
  flex-wrap: wrap;
  gap: 9px;
}

.visc-tag {
  display: inline-flex;
  padding: 5px 25px;
  align-items: center;
  gap: 5px;
  border: 1px solid rgba(255, 255, 255, .42);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  border-color: rgba(111, 84, 96, .18);
  border-radius: 999px;
  background: rgba(255, 255, 255, .72);
}

.visc-tag .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: currentColor;
}

.visc-tag.is-low {
  color: #337d99;
}

.visc-tag.is-mid {
  color: #ae4a74;
}

.visc-tag.is-high {
  color: #655c7a;
}

.kv-visual {
  min-width: 0;
}

.kv-card-eyecatch {
    position: relative;
    padding: 12px;
    background: #fff;
    border: 0;
    border-radius: 22px;
    box-shadow: 10px 10px 0 rgb(238 236 237 / 97%), 0 18px 42px rgba(101, 70, 85, .12);
}

.kv-card-eyecatch img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 14px;
}

.viscosity-nav {
    position: sticky;
    top: 80px;
    z-index: 40;
    border-bottom: 1px solid #d5d5d5;
    backdrop-filter: blur(10px);
    border-color: #eadfe2;
    background: #000;
    box-shadow: 0 8px 24px rgba(87, 58, 71, .06);
}

.viscosity-nav__viewport {
  position: relative;
}

.viscosity-nav__scroller {
  max-width: 100%;
  min-width: 0;
}

.viscosity-nav__scroller:focus-visible {
  outline: 2px solid var(--brand-dark);
  outline-offset: -2px;
}

.viscosity-nav__hint {
  display: none;
  margin: 0;
  padding: 5px 12px 6px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-top: 1px solid #eee4e7;
  color: var(--ink-soft);
  background: var(--surface-alt);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.6;
}

.viscosity-nav .viscosity-nav__hint span {
  color: inherit;
  font: inherit;
  letter-spacing: normal;
  line-height: inherit;
}

.viscosity-nav__hint svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.viscosity-nav__hint[hidden] {
  display: none;
}

.viscosity-nav__inner {
  display: grid;
  width: min(var(--page), 100%);
  min-height: 70px;
  margin-inline: auto;
  grid-template-columns: 1.15fr repeat(3, 1fr) 1.15fr;
}

.viscosity-nav a {
  position: relative;
  display: grid;
  padding: 10px 18px;
  place-content: center;
  border-right: 1px solid #e4e4e4;
  text-align: center;
  text-decoration: none;
  border-color: #eee4e7;
}

.viscosity-nav a:first-child {
  border-left: 1px solid #e4e4e4;
  border-color: #eee4e7;
}

.viscosity-nav a::after {
  position: absolute;
  right: 20%;
  bottom: -1px;
  left: 20%;
  content: "";
  transform: scaleX(0);
  transition: transform .2s ease;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: var(--brand);
}

.viscosity-nav a:hover::after,
.viscosity-nav a:focus-visible::after {
  transform: scaleX(1);
}

.viscosity-nav a span {
    color: #ffffff;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .12em;
    line-height: 1.2;
}

.viscosity-nav a strong {
    margin-top: 3px;
    margin-bottom: 5px;
    font-size: 18px;
    line-height: 1.35;
}

.viscosity-nav a small {
 color: #ffffff;
  font-size: 14px;
  line-height: 1.2;
}

.viscosity-nav .is-low strong {
  color: var(--low);
}

.viscosity-nav .is-mid strong {
  color: var(--mid);
}

.viscosity-nav .is-high strong {
  color: var(--high);
}

.index-box {
  display: grid;
  width: min(960px, calc(100% - 48px));
  margin: 35px auto 56px;
  padding: 36px 42px;
  grid-template-columns: 150px 1fr;
  gap: 8px 46px;
  border: 1px solid #eadfe2;
  /* border-top: 0; */
  /* border-radius: 18px; */
  background: #fff;
  /* box-shadow: 0 16px 42px rgba(91, 59, 74, .075); */
}

.index-box .lbl {
  color: var(--brand-dark);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  margin-top: auto;
  letter-spacing: .18em;
}

.index-box h3 {
  grid-column: 1;
  margin: 0;
  font-size: 36px;
  line-height: 1.35;
  text-align: center;
}

.index-box>ol {
  grid-row: 1 / span 2;
  grid-column: 2;
  margin: 0;
  padding: 0;
  list-style: none;
}

.index-box>ol>li {
  border-bottom: 1px solid #e4e4e4;
  border-color: #eee5e7;
}

.index-box>ol>li:last-child {
  border-bottom: 0;
}

.index-box>ol>li>a {
  display: flex;
  min-height: 56px;
  align-items: center;
  gap: 20px;
  font-weight: 700;
  font-size: 21px;
  text-decoration: none;
}

.index-box .n {
  min-width: 32px;
  color: var(--brand-dark);
  font-family: var(--font_title);
  font-size: 21px;
}

.index-sublist {
  display: flex;
  margin: -2px 0 14px 55px;
  padding: 0;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
}

.index-sublist a {
  color: #4a4a4a;
  font-size: 13px;
  text-underline-offset: 4px;
}

.lead {
  max-width: 780px !important;
  margin: 45px auto 50px !important;
  padding: 0 24px;
  text-align: left !important;
}

.lead p {
  margin: 0 0 12px !important;
  color: var(--ink-soft) !important;
  font-size: 16px !important;
  line-height: 2;
}

.supervisor {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.supervisor__label {
  font-weight: 700;
}

.supervisor__name {
  min-width: 0;
  overflow-wrap: anywhere;
}

.supervisor__name a {
  color: blue;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.supervisor__name a:focus-visible {
  outline: 2px solid var(--brand-dark);
  outline-offset: 4px;
}

.sec-num {
  margin: 0 auto 52px;
  text-align: center;
}

.sec-num .num {
    font-family: var(--font_title);
    color: var(--c_main);
    font-size: 80px;
    line-height: 130%;
}

.sec-num .eng {
  margin-top: 3px;
  color: #5c5c5c;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.sec-num h2 {
  margin: 16px 0 0;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.35;
}

.sec-num h2::after {
  display: block;
  width: 48px;
  height: 4px;
  margin: 22px auto 0;
  background: var(--brand);
  content: "";
}

.sec-num p {
  margin: 16px 0 0;
  color: var(--ink-soft);
}

#viscosity {
  background: #fcfcfc;
}

.visc-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.visc-card {
  overflow: hidden;
  border: 1px solid #d3d3d3;
  background: #fff;
  border-color: #e5dadd;
  /* border-radius: 18px; */
  box-shadow: 0 12px 30px rgba(83, 57, 69, .07);
}

.visc-card.is-low {
  --accent: var(--low);
  --soft: var(--low-soft);
}

.visc-card.is-mid {
  --accent: var(--mid);
  --soft: var(--mid-soft);
}

.visc-card.is-high {
  --accent: var(--high);
  --soft: var(--high-soft);
}

.visc-card .head {
  min-height: 245px;
  padding: 28px 26px 24px;
  border-top: 8px solid var(--accent);
  border-top-width: 6px;
}

.visc-drops {
  display: flex;
  gap: 5px;
}

.visc-drops svg {
  width: 19px;
  height: 19px;
  fill: #d7d7d7;
}

.visc-drops svg.active {
  fill: var(--accent);
}

.visc-card .tag {
  margin-top: 5px;
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.02em;
}

.visc-level-label {
  display: inline-block;
  margin-top: 3px;
  padding: 4px 9px;
  color: var(--accent);
  background: var(--soft);
  font-size: 12px;
  font-weight: 800;
}

.visc-card .value {
  margin-top: 10px;
  color: #111;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1;
}

.custom-underline {
  background: linear-gradient(transparent 60%, #ffff66 60%);
}

.features {
  display: table;
  background-color: var(--accent);
  color: #fff;
  font-weight: bold;
  padding: 0px 7px;
  margin-bottom: 10px;
  border-radius: 10px;
  letter-spacing: 0.02rem;
}

.visc-card .value span {
  display: block;
  margin-top: 10px;
  color: #555;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .03em;
}

.visc-card .body {
  min-height: 270px;
  padding: 26px;
  border-top: 1px solid #e2e2e2;
  background: var(--soft);
  border-color: #eadfe2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.visc-card .body p {
  margin: 0 0 12px;
  color: #292929;
  font-size: 16px;
  line-height: 1.85;
}

.method-subnav {
  display: none;
}

#method-low {
  --accent: var(--low);
  --soft: var(--low-soft);
  background: #fcfcfc;
}

#method-mid {
  --accent: var(--mid);
  --soft: var(--mid-soft);
background: #ffffff;
}

#method-high {
  --accent: var(--high);
  --soft: var(--high-soft);
   background: #fcfcfc;
}

.method-head {
  position: relative;
  display: flex;
  margin-bottom: 0;
  padding: 0 0 26px 60px;
  align-items: flex-end;
  border-bottom: 1px solid #cfcfcf;
  border-color: #e4d9dc;
}

.method-head .num {
  position: absolute;
  bottom: 23px;
  left: 0;
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  color: #fff;
  background: var(--accent) !important;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 25px;
  font-weight: 800;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(75, 54, 64, .1);
}

.method-head h2 {
  margin: 0;
  color: #171717;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.35;
}

.method-sub {
  display: inline-block;
  margin: 15px 0 0px;
  color: var(--accent) !important;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 24px;
  font-weight: 800;
}

.method-intro {
  margin: 0 0 0px;
  padding: 10px 0px 25px 0;
  border: 0 !important;
  border-radius: 0 16px 16px 0;
}

.method-intro h3 {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 23px;
  font-weight: 800;
  line-height: 1.5;
}

.method-intro p {
  margin: 6px 0;
  color: #2b2b2b;
}

.method-block {
  margin-top: 24px;
  padding: 32px;
  border: 1px solid #d5d5d5 !important;
  background: #fff;
}

.method-block>h4 {
  display: flex;
  margin: 0 0 24px;
  align-items: center;
  gap: 7px;
  color: #161616;
  font-size: 25px;
  font-weight: 800;
  line-height: 1.4;
}

.method-block>h4::before {
  display: inline-grid;
  width: 45px;
  height: 30px;
  place-items: center;
  flex: 0 0 auto;
  color: #fff;
  background: var(--accent);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 12px;
  padding: 5px;
  letter-spacing: 0.02rem;
  content: "POINT";
  border-radius: 10px;
}

.method-block__grid {
  display: grid;
  grid-template-columns: minmax(300px, .9fr) minmax(0, 1.1fr);
  align-items: start;
  gap: 34px;
}

.method-block__grid>div>p {
  margin: 0 0 12px;
  color: #353535;
  font-size: 15px;
  line-height: 1.9;
}

.video-card {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid #e8dfe2;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(79, 55, 66, .08);
}

.video-card__media {
  position: relative;
  aspect-ratio: 1;
  background: var(--soft);
}

.method-video {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.method-video:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}

.video-card__play {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 76px;
  height: 76px;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .95);
  border-radius: 50%;
  color: var(--accent);
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 6px 24px rgba(45, 32, 39, .16), 0 0 0 8px rgba(255, 255, 255, .16);
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: background-color .2s ease, box-shadow .2s ease, transform .2s ease;
  -webkit-tap-highlight-color: transparent;
}

.video-card__play svg {
  width: 22px;
  height: 22px;
  margin-left: 4px;
  fill: currentColor;
}

.video-card__play:hover {
  background: #fff;
  box-shadow: 0 8px 28px rgba(45, 32, 39, .2), 0 0 0 10px rgba(255, 255, 255, .2);
  transform: translate(-50%, -50%) scale(1.04);
}

.video-card__play:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}

.video-card__play[aria-busy="true"] {
  cursor: progress;
}

.video-card__play[aria-busy="true"] svg {
  visibility: hidden;
}

.video-card__play[aria-busy="true"]::after {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  animation: video-card-loading .8s linear infinite;
}

.video-card__play[hidden],
.video-card__status[hidden] {
  display: none;
}

.video-card__caption {
  display: grid;
  padding: 17px 20px 18px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 5px 12px;
  border-top: 1px solid #eee5e8;
}

.video-card__label {
  grid-column: 1;
  justify-self: start;
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--ink);
  background: var(--soft);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.5;
}

.video-card__label::before {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
  content: "";
}

.video-card__title {
  grid-column: 1;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
}

.video-card__duration {
  grid-row: 1 / span 2;
  grid-column: 2;
  color: var(--ink-soft);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

.video-card__status {
  position: absolute;
  right: 12px;
  bottom: 12px;
  left: 12px;
  margin: 0;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, .96);
  font-size: 12px;
  line-height: 1.6;
}

@keyframes video-card-loading {
  to {
    transform: rotate(360deg);
  }
}

.explanation {
  font-size: 21px !important;
  font-weight: bold;
}

.points-box {
  margin-top: 20px;
  padding: 0px 22px 15px 0;
  border-radius: 0 14px 14px 0;
}

.points-box .ttl {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 18px;
  font-weight: 800;
}

.points-box ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.points-box li {
  position: relative;
  padding-left: 30px;
  color: #222;
  font-size: 18px;
  font-weight: 700;
}

.points-box li+li {
  margin-top: 4px;
}

.points-box li::before {
  position: absolute;
  top: 1px;
  left: 0;
  color: var(--accent);
  content: "✅";
  font-weight: 900;
}

.summary-box {
  margin-top: 5px;
  padding: 15px 20px 20px;
  border: 1px solid #d8d8d8;
  color: #222;
  font-size: 16px;
  line-height: 1.8;
  border-color: #c9c9c9;
  background: #f4f4f4;
}

.summary-box .ttl {
  display: inline-block;
  color: var(--accent);
  margin-bottom: 7px;
  font-size: 21px;
  margin-right: 5px;
  font-weight: 900;
  letter-spacing: .03em;
}

.scoop-section {
  margin-top: 64px;
  padding: 40px;
  color: #fff;
}

.scoop-section__head {
  margin: 0 auto 30px;
  /* text-align: center; */
}

.scoop-section__head>span {
  color: var(--accent);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .2em;
}

.scoop-section__head h3 {
  margin: 5px 0 20px;
  color: var(--accent);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.45;
}

.scoop-section__head h4 {
  margin: 8px 0 18px;
  color: var(--brand);
  font-size: 15px;
  font-weight: 700;
}

.scoop-section__head p {
  margin: 5px 0;
  color: #333;
  font-size: 16px;
  line-height: 2.4;
}

.okng-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.okng-grid.two-cols {
  grid-template-columns: repeat(2, 1fr);
  margin-bottom: 25px;
}

.okng-card {
  padding: 30px 25px;
  color: #171717;
  background: #fff;
  border: solid #333 1px;
}

.okng-card .label {
  display: inline-block;
  padding: 3px 13px;
  color: #fff;
  background: var(--ok);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 21px;
  font-weight: 900;
  border-radius: 15px;
}

.okng-card.is-ng .label {
  background: var(--ng);
}

.okng-card h4 {
  margin: 14px 0 16px;
  color: #171717;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.55;
}

.okng-card p {
  margin: 5px 0 0;
  padding: 0 0px;
  font-size: 14px;
  line-height: 1.6;
  color: #333;
}

.motion-arrow {
  margin: 25px 0 16px;
  padding: 14px 12px;
  color: var(--accent);
  font-size: 31px;
  font-weight: 800;
  text-align: center;
  background: #f4f4f4;
}

.motion-arrow b {
  margin: 0 5px;
  color: var(--accent);
  font-size: 30px;
}

.scoop-section>.summary-box {
  margin-top: 18px;
  border: 0;
  border-left: 5px solid var(--brand);
  display: flex;
  flex-wrap: balance;
  align-items: center;
}

.scoop-section>.summary-box .ttl {
  color: var(--brand);
}

.nav-link {
  display: flex;
  width: min(440px, 100%);
  min-height: 70px;
  margin: 0px auto 35px;
  padding: 0 24px;
  font-size: 21px;
  align-items: center;
  justify-content: center;
  color: #fff !important;
  background: var(--accent) !important;
  font-weight: 800;
  text-decoration: none;
  transition: opacity .2s ease, transform .2s ease;
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(78, 55, 65, .12);
}

.nav-link:hover {
  opacity: .88;
  transform: translateX(3px);
}

#faq {
  background: #fff;
}

.faq-item {
  border-top: 1px solid #c8c8c8;
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid #e3e3e3;
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(82, 57, 68, .045);
}

.faq-item:last-child {
  border-bottom: 1px solid #e3e3e3;
}

.faq-item summary {
  display: flex;
  min-height: 82px;
  padding: 20px 24px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  color: #171717;
  font-size: 16px;
  font-weight: 800;
  list-style: none;
}

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

.faq-item summary>span:first-child::before {
  margin-right: 14px;
  color: var(--brand-dark);
  content: "Q";
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
}

.faq-item .plus {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid #bdbdbd;
  border-radius: 50%;
  font-size: 17px;
  border-color: #d9c9cf;
  color: var(--brand-dark);
  background: #fff7fa;
}

.faq-item[open] .plus {
  transform: rotate(45deg);
}

.faq-item .a {
  margin: 0 24px;
  padding: 0 24px 26px 32px;
  color: #333;
  font-size: 15px;
  line-height: 1.9;
}

.final-cta {
  position: relative;
  overflow: hidden;
  color: #fff;
  text-align: center;
  background: linear-gradient(145deg, #59424d 0%, #3d3237 100%);
}

.final-cta::before {
  position: absolute;
  top: -170px;
  left: -130px;
  width: 420px;
  height: 420px;
  border: 90px solid rgba(255, 102, 166, .09);
  border-radius: 50%;
  content: "";
  border-color: rgba(255, 190, 214, .08);
}

.final-cta__label {
  color: var(--brand);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
}

.final-cta h2 {
  margin: 15px 0 0;
  color: #fff;
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.5;
}

.final-cta__lead {
  margin: 18px 0 34px;
  color: #d8d8d8;
}

.final-cta__choices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.final-cta__choice {
  position: relative;
  display: grid;
  min-height: 160px;
  padding: 24px;
  align-content: center;
  border: 1px solid rgba(255, 255, 255, .27);
  color: #fff;
  text-align: left;
  text-decoration: none;
  transition: border-color .2s ease, background .2s ease;
  border-color: rgba(255, 255, 255, .2);
  border-radius: 16px;
  background: rgba(255, 255, 255, .04);
}

.final-cta__choice:hover {
  border-color: #f2a4c1;
  background: rgba(255, 255, 255, .08);
}

.final-cta__choice::before {
  width: 36px;
  height: 5px;
  margin-bottom: 15px;
  background: var(--choice);
  content: "";
}

.final-cta__choice.is-low {
  --choice: #49b7e8;
}

.final-cta__choice.is-mid {
  --choice: #ff78b1;
}

.final-cta__choice.is-high {
  --choice: #aaa1c8;
}

.final-cta__choice-meta {
  color: #cfcfcf;
  font-size: 12px;
}

.final-cta__choice strong {
  margin-top: 3px;
  font-size: 20px;
}

.final-cta__choice-arrow {
  position: absolute;
  right: 22px;
  bottom: 20px;
  color: var(--brand);
  font-size: 20px;
}

.final-cta__all {
  display: flex;
  margin-top: 32px;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.final-cta__all>span {
  color: #cfcfcf;
  font-size: 13px;
}

.final-cta__primary {
  display: inline-flex;
  min-height: 56px;
  padding: 0 24px;
  align-items: center;
  justify-content: center;
  gap: 30px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  border-radius: 999px;
  color: #fff;
  background: var(--brand-dark);
}

.to-index-btn {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 35;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid #fff;
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .22);
  font-size: 10px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  border-color: rgba(255, 255, 255, .8);
  background: #69515d;
}

.eyecatch-caption {
  color: #64555c;
}

.viscosity-nav .is-overview strong,
.viscosity-nav .is-faq strong {
      color: #ffffff;
}

@media (max-width: 920px) {
  .kv-inner {
    min-height: auto;
    padding: 62px 0 74px;
    grid-template-columns: 1fr 310px;
    gap: 34px;
  }

  .kv h1 {
    font-size: 48px;
  }

  .visc-table {
    grid-template-columns: 1fr;
  }

  .visc-card {
    display: grid;
    grid-template-columns: .8fr 1.2fr;
  }

  .visc-card .body {
    min-height: 0;
    border-top: 0;
    border-left: 1px solid #eadfe2;
    border-color: #eadfe2;
  }

  .method-block__grid {
    grid-template-columns: .85fr 1.15fr;
    gap: 24px;
  }

  .okng-grid {
    grid-template-columns: 1fr;
  }

  .scoop-section {
    padding: 40px 0;
  }

  #faq {
    padding-top: 15px;
  }

}

@media (max-width: 720px) {
  body {
    font-size: 16px;
    line-height: 1.8;
  }

  .wrap,
  .wrap-narrow {
    width: min(100% - 32px, var(--page));
  }

  section {
    padding: 72px 0;
  }

  .site-bar {
    min-height: 58px;
    padding: 8px 16px;
  }

  .site-bar__brand span {
    font-size: 18px;
  }

  .site-bar__brand small {
    display: none;
  }

  .site-bar__shop {
    min-height: 40px;
    padding: 0 13px;
    gap: 10px;
    font-size: 12px;
  }

  .kv-inner {
    width: calc(100% - 32px);
    padding: 48px 0 62px;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .kv .en-title {
    margin-bottom: 15px;
    font-size: 13px;
  }

  .kv h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .kv p {
    margin-top: 24px;
    font-size: 16px;
    line-height: 1.9;
  }

  .btn-kv {
    width: 100%;
    min-height: 58px;
    margin-top: 25px;
  }

  .visc-tags {
    display: grid;
    margin-top: 22px;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .visc-tag {
    min-height: 44px;
    padding: 0 8px;
    justify-content: center;
    font-size: 12px;
  }

  .kv-card-eyecatch {
    width: calc(100% - 18px);
    margin: 0 0 0 auto;
    box-shadow: -15px 15px 0 rgba(239, 134, 174, .18), 0 16px 34px rgba(101, 70, 85, .1);
  }

  .badge-pop {
    left: -12px;
  }
.viscosity-nav {
    top: 60px;
}
  .viscosity-nav__scroller {
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .viscosity-nav__scroller::-webkit-scrollbar {
    display: none;
  }

  .viscosity-nav__viewport::before,
  .viscosity-nav__viewport::after {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 1;
    width: 20px;
    opacity: 0;
    pointer-events: none;
    content: "";
  }

  .viscosity-nav__viewport::before {
    left: 0;
    background: linear-gradient(90deg, #fffdfb, rgba(255, 253, 251, 0));
  }

  .viscosity-nav__viewport::after {
    right: 0;
    background: linear-gradient(270deg, #fffdfb, rgba(255, 253, 251, 0));
  }

  .viscosity-nav__viewport.can-scroll-left::before,
  .viscosity-nav__viewport.can-scroll-right::after {
    opacity: 1;
  }

  .viscosity-nav__hint {
    display: flex;
  }

  .viscosity-nav__inner {
    width: max-content;
    min-height: 64px;
    grid-template-columns: repeat(5, 112px);
  }

  .viscosity-nav a {
    padding: 9px 10px;
  }

  .viscosity-nav a strong {
    font-size: 14px;
  }

  .index-box {
    display: block;
    width: calc(100% - 32px);
    margin: 46px auto 38px;
    padding: 26px 22px;
  }

  .index-box h3 {
    margin-top: 3px;
    font-size: 22px;
  }

  .index-box>ol {
    margin-top: 15px;
  }

  .index-box>ol>li>a {
    min-height: 56px;
    gap: 10px;
    font-size: 14px;
  }

  .index-sublist {
    display: grid;
    margin: 0 0 15px 42px;
    gap: 7px;
  }

  .lead {
    margin-bottom: 54px !important;
    padding: 0 16px;
  }

  .sec-num {
    margin-bottom: 36px;
  }

  .okng-card p {
    margin: 10px 0 0;
    padding: 0 0px;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
  }

  .sec-num h2 {
    margin-top: 12px;
    font-size: 30px;
  }

  .visc-table {
    grid-template-columns: 1fr;
  }

  .visc-card {
    display: block;
  }

  .visc-card .head {
    min-height: 0;
    padding: 24px 22px 22px;
  }

  .visc-card .tag {
    font-size: 21px;
  }

  .visc-card .value {
    margin-top: 20px;
    font-size: 34px;
  }

  .visc-card .body {
    min-height: 0;
    padding: 22px;
    border-top: 1px solid #eadfe2;
    border-left: 0;
    border-color: #eadfe2;
  }

  .method-head {
    display: block;
    padding: 72px 0 20px;
  }

  .method-head .num {
    top: 0;
    bottom: auto;
    width: 52px;
    height: 52px;
    font-size: 21px;
    border-radius: 14px;
  }

  .method-head h2 {
    font-size: 30px;
  }

  .method-sub {
    margin: 15px 0 3px;
  }

  .method-intro {
    padding: 5px 0px 5px;
  }

  .method-intro h3 {
    font-size: 20px;
  }

  .method-block {
    margin-top: 18px;
    padding: 22px 10px 30px;
    /*  border-radius: 16px; */
  }

  .method-block>h4 {
    margin-bottom: 18px;
    font-size: 21px;
  }

  .method-block__grid {
    grid-template-columns: 1fr;
    gap: 23px;
  }

  .points-box {
    padding: 0px 0 25px;
  }

  .method-block__grid>div>p {
    padding-left: 2px;
    margin-bottom: 0;
  }

  .scoop-section {
    margin-top: 42px;
    padding: 25px 0px 20px;
    border-radius: 18px;
  }

  .summary-box {}

  .scoop-section__head h3 {
    font-size: 25px;
  }

  .okng-grid,
  .okng-grid.two-cols {
    grid-template-columns: 1fr;
  }

  .nav-link {
    width: 85%;
    min-height: 60px;
    margin-top: 24px;
  }

  .faq-item summary {
    min-height: 76px;
    padding: 18px 16px;
    gap: 10px;
    font-size: 14px;
    line-height: 1.65;
  }

  .faq-item summary>span:first-child {
    display: flex;
  }

  .faq-item summary>span:first-child::before {
    flex: 0 0 auto;
  }

  .faq-item .a {
    margin: 0 16px;
    padding: 0 12px 24px 36px;
    font-size: 14px;
  }

  .final-cta__choices {
    grid-template-columns: 1fr;
  }

  .final-cta__choice {
    min-height: 125px;
  }

  .final-cta__all {
    flex-direction: column;
    gap: 12px;
  }

  .final-cta__primary {
    width: 100%;
  }

  .to-index-btn {
    right: 12px;
    bottom: 12px;
    width: 52px;
    height: 52px;
  }

  .index-box::before {
    right: 22px;
    left: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .video-card__play[aria-busy="true"]::after {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}