:root {
  --black: #030303;
  --soft-black: #090909;
  --white: #f7f7f5;
  --muted: #d8d6d1;
  --gold: #bfa15f;
  --gold-deep: #8b7137;
  --line: rgba(191, 161, 95, .35);
  --serif: "Yu Mincho", "游明朝", YuMincho, "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Noto Serif JP", serif;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--white);
  background: var(--black);
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: .035em;
  -webkit-font-smoothing: antialiased;
}

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

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

.site-header {
  position: relative;
  z-index: 20;
  height: 72px;
  border-bottom: 1px solid rgba(191, 161, 95, .28);
  background: #020202;
}

.header-inner {
  width: min(100%, 1480px);
  height: 100%;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  gap: 34px;
}

.brand {
  width: 140px;
  flex: 0 0 140px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
}

.brand-name {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 31px;
  letter-spacing: .08em;
}

.brand-tagline {
  margin-top: 5px;
  white-space: nowrap;
  font-family: Arial, sans-serif;
  font-size: 5.2px;
  font-weight: 700;
  letter-spacing: .08em;
}

.desktop-nav {
  height: 100%;
  margin-left: auto;
  display: flex;
  align-items: stretch;
  gap: clamp(22px, 3.3vw, 55px);
  white-space: nowrap;
}

.desktop-nav a {
  position: relative;
  display: flex;
  align-items: center;
  font-size: 14px;
  letter-spacing: .055em;
  transition: color .25s ease;
}

.desktop-nav a:hover {
  color: var(--gold);
}

.desktop-nav a.current::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--gold);
}

.join-button {
  flex: 0 0 auto;
  min-width: 112px;
  margin-left: 12px;
  padding: 11px 16px 10px;
  color: #d6b45e;
  border: 1px solid #8e722b;
  text-align: center;
  font-size: 13px;
  letter-spacing: .08em;
  transition: background .25s ease, color .25s ease;
}

.join-button:hover {
  color: #050505;
  background: var(--gold);
}

.mobile-menu {
  display: none;
}

.hero {
  position: relative;
  min-height: 475px;
  overflow: hidden;
  isolation: isolate;
}

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

.hero-image {
  z-index: -3;
  background-image: url("pure-white-hero.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.hero-shade {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, .84) 0%, rgba(0, 0, 0, .62) 34%, rgba(0, 0, 0, .1) 62%, transparent 100%),
    linear-gradient(0deg, rgba(0, 0, 0, .25), transparent 35%);
}

.hero-inner {
  width: min(100%, 1440px);
  min-height: 475px;
  margin: 0 auto;
  padding: 0 46px;
}

.breadcrumb {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #eeeeea;
  font-size: 13px;
  letter-spacing: .06em;
}

.breadcrumb a:hover {
  color: var(--gold);
}

.breadcrumb span:nth-child(even) {
  color: var(--gold);
}

.hero-copy {
  width: 48%;
  max-width: 580px;
  padding-top: 25px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 21px;
  letter-spacing: .09em;
}

.eyebrow span {
  position: relative;
  display: inline-block;
  min-width: 132px;
  padding: 0 10px 12px;
  border-bottom: 1px solid rgba(191, 161, 95, .5);
}

.eyebrow span::after,
.heading-ornament::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transform: translateX(-50%) rotate(45deg);
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 4.4vw, 64px);
  font-weight: 400;
  line-height: 1.42;
  letter-spacing: .075em;
  text-shadow: 0 2px 18px #000;
}

.hero-lead {
  margin: 18px 0 0;
  color: #d1ad51;
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.55;
  letter-spacing: .07em;
}

.hero-text {
  margin: 22px 0 0;
  color: #f2f2ef;
  font-size: 14px;
  line-height: 2;
  letter-spacing: .05em;
}

.content-wrap {
  width: min(calc(100% - 64px), 1160px);
  margin: 0 auto;
}

.wide-wrap {
  width: min(calc(100% - 64px), 1210px);
}

.section-pad {
  padding: 32px 0 0;
}

.section-pad-top {
  padding-top: 36px;
}

.section-heading {
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 37px);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .08em;
}

.heading-ornament {
  position: relative;
  display: block;
  width: 250px;
  height: 1px;
  margin: 11px auto 19px;
  background: linear-gradient(90deg, transparent, rgba(191, 161, 95, .65), transparent);
}

.section-heading > p {
  margin: 0;
  color: #e2e1de;
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: .065em;
}

.compact-heading .heading-ornament {
  margin-bottom: 0;
}

.process-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr);
  align-items: center;
  margin-top: 25px;
}

.process-card {
  min-width: 0;
  text-align: center;
}

.process-card h3 {
  position: relative;
  display: inline-block;
  min-width: 160px;
  margin: 0 0 10px;
  padding: 0 8px 7px;
  border-bottom: 1px solid rgba(191, 161, 95, .42);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: .1em;
}

.process-card h3::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -3px;
  width: 5px;
  height: 5px;
  background: var(--gold);
  transform: translateX(-50%) rotate(45deg);
}

.process-main h3,
.process-main p {
  color: #d0ad50;
}

.process-image {
  position: relative;
  aspect-ratio: 1.84 / 1;
  overflow: hidden;
  border: 1px solid rgba(191, 161, 95, .35);
  background: #0b0b0b;
}

.process-image img {
  height: 100%;
  object-fit: cover;
  object-position: center 47%;
}

.process-card p {
  min-height: 50px;
  margin: 12px 0 0;
  color: #f0efec;
  font-size: 15px;
  line-height: 1.7;
}

.flow-arrow {
  width: 21px;
  height: 21px;
  justify-self: center;
  border-top: 2px solid #c6a343;
  border-right: 2px solid #c6a343;
  transform: rotate(45deg);
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 18px;
  border: 1px solid var(--line);
}

.reason-card {
  min-width: 0;
  min-height: 204px;
  padding: 21px 16px 18px;
  text-align: center;
}

.reason-card + .reason-card {
  border-left: 1px solid var(--line);
}

.reason-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 6px;
  overflow: visible;
  fill: none;
  stroke: #c9a544;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.reason-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .065em;
}

.reason-card p {
  margin: 0;
  color: #d8d7d3;
  font-size: 13px;
  line-height: 1.75;
  letter-spacing: .035em;
}

.recommended {
  padding-bottom: 26px;
}

.items-wrap {
  width: min(calc(100% - 34px), 1260px);
}

.item-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 15px;
  margin-top: 9px;
}

.item-card {
  min-width: 0;
  margin: 0;
  text-align: center;
}

.item-card img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #0a0a0a;
}

.item-card figcaption {
  padding: 10px 2px 0;
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: .045em;
  white-space: nowrap;
}

.items-note {
  margin: 15px 0 0;
  color: #c9a44d;
  text-align: center;
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: .06em;
}

#flore-footer {
  padding: 50px 0;
  background: #000;
  border-top: 1px solid rgba(191, 161, 95, .18);
}

.site-container {
  width: min(1400px, 92%);
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 45px;
  margin-bottom: 20px;
}

#flore-footer a {
  color: var(--gold);
  text-decoration: none;
}

.copyright {
  margin: 0;
  color: #888;
  text-align: center;
  font-size: 14px;
}

@media (min-width: 1280px) {
  .hero {
    min-height: 600px;
  }

  .hero-inner {
    min-height: 600px;
  }

  .hero-copy {
    padding-top: 60px;
  }
}

@media (max-width: 1120px) {
  .header-inner {
    gap: 22px;
  }

  .desktop-nav {
    gap: 23px;
  }

  .desktop-nav a {
    font-size: 13px;
  }

  .join-button {
    margin-left: 0;
  }
}

@media (max-width: 900px) {
  .site-header {
    height: 66px;
  }

  .header-inner {
    padding: 0 20px;
  }

  .desktop-nav,
  .join-button {
    display: none;
  }

  .mobile-menu {
    position: relative;
    display: block;
    margin-left: auto;
  }

  .mobile-menu summary {
    width: 38px;
    height: 38px;
    display: grid;
    place-content: center;
    gap: 6px;
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    display: block;
    width: 26px;
    height: 1px;
    background: var(--gold);
  }

  .mobile-menu nav {
    position: absolute;
    top: 51px;
    right: -20px;
    width: min(84vw, 330px);
    padding: 10px 22px 18px;
    border: 1px solid var(--line);
    background: rgba(2, 2, 2, .98);
    box-shadow: 0 12px 30px rgba(0,0,0,.55);
  }

  .mobile-menu nav a {
    display: block;
    padding: 13px 4px;
    border-bottom: 1px solid rgba(191,161,95,.18);
    font-size: 14px;
  }

  .hero,
  .hero-inner {
    min-height: 610px;
  }

  .hero-image {
    background-position: 58% center;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(0,0,0,.9), rgba(0,0,0,.53) 65%, rgba(0,0,0,.15));
  }

  .hero-inner {
    padding: 0 28px;
  }

  .hero-copy {
    width: 76%;
    padding-top: 65px;
  }

  .process-flow {
    grid-template-columns: 1fr;
    width: min(100%, 600px);
    margin-right: auto;
    margin-left: auto;
  }

  .flow-arrow {
    margin: 12px 0 15px;
    transform: rotate(135deg);
  }

  .reason-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .reason-card + .reason-card {
    border-left: 0;
  }

  .reason-card:nth-child(even) {
    border-left: 1px solid var(--line);
  }

  .reason-card:nth-child(n+3) {
    border-top: 1px solid var(--line);
  }

  .item-grid {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 24px;
  }
}

@media (max-width: 600px) {
  .header-inner {
    padding: 0 16px;
  }

  .brand {
    width: 126px;
    flex-basis: 126px;
  }

  .brand-name {
    font-size: 28px;
  }

  .mobile-menu nav {
    right: -16px;
  }

  .hero,
  .hero-inner {
    min-height: 620px;
  }

  .hero-image {
    background-position: 63% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(0,0,0,.92), rgba(0,0,0,.59) 75%, rgba(0,0,0,.26)),
      linear-gradient(0deg, rgba(0,0,0,.45), transparent 45%);
  }

  .hero-inner {
    padding: 0 20px;
  }

  .breadcrumb {
    height: 54px;
    gap: 8px;
    font-size: 11px;
  }

  .hero-copy {
    width: 100%;
    padding-top: 83px;
  }

  .eyebrow {
    font-size: 18px;
  }

  .hero h1 {
    font-size: clamp(34px, 10vw, 46px);
    line-height: 1.48;
    letter-spacing: .05em;
  }

  .hero-lead {
    font-size: 18px;
  }

  .hero-text {
    font-size: 12px;
    line-height: 1.85;
  }

  .desktop-only {
    display: none;
  }

  .content-wrap,
  .wide-wrap,
  .items-wrap {
    width: min(calc(100% - 32px), 1160px);
  }

  .section-pad {
    padding-top: 34px;
  }

  .section-pad-top {
    padding-top: 44px;
  }

  .section-heading h2 {
    font-size: 25px;
    line-height: 1.65;
    letter-spacing: .055em;
  }

  .heading-ornament {
    width: 210px;
  }

  .section-heading > p {
    font-size: 13px;
    line-height: 2;
    text-align: left;
  }

  .process-flow {
    margin-top: 30px;
  }

  .process-card h3 {
    font-size: 19px;
  }

  .process-card p {
    font-size: 14px;
  }

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

  .reason-card {
    min-height: 0;
    padding: 24px 15px 23px;
  }

  .reason-card:nth-child(even) {
    border-left: 0;
  }

  .reason-card:nth-child(n+2) {
    border-top: 1px solid var(--line);
  }

  .item-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 12px;
    margin-top: 16px;
  }

  .item-card figcaption {
    font-size: 12px;
    white-space: normal;
  }

  .items-note {
    margin-top: 24px;
    font-size: 12px;
  }

  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
}

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

/* 1024 x 1536 reference: measured desktop geometry */
@media (min-width: 901px) {
  .hero,
  .hero-inner {
    height: clamp(475px, 46.38671875vw, 600px);
    min-height: 0;
  }

  .hero-image {
    background-size: 100% auto;
    background-position: center center;
  }

  .breadcrumb {
    margin-left: -18px;
  }

  .hero-copy {
    padding-top: 25px;
  }

  .whitening-story.section-pad {
    padding-top: 28px;
  }

  .whitening-story .content-wrap,
  .reasons .wide-wrap {
    max-width: 942px;
  }

  .whitening-story .heading-ornament {
    margin: 5px auto 11px;
  }

  .whitening-story .section-heading > p {
    line-height: 1.65;
  }

  .process-flow {
    grid-template-columns:
      minmax(0, 1fr) 60px
      minmax(0, 1fr) 60px
      minmax(0, 1fr);
    margin-top: 21px;
  }

  .process-card h3 {
    display: block;
    width: 160px;
    height: 35px;
    margin: 0 auto 7px;
    padding: 0 8px 7px;
    line-height: 27px;
  }

  .reasons.section-pad-top {
    padding-top: 24px;
  }

  .reasons .compact-heading .heading-ornament {
    margin: 2px auto 0;
  }

  .reason-grid {
    margin-top: 5px;
  }

  .reason-card {
    min-height: 203px;
    padding: 18px 14px 14px;
  }

  .reason-card h3 {
    margin-bottom: 5px;
  }

  .recommended.section-pad-top {
    padding-top: 24px;
    padding-bottom: 7px;
  }

  .items-wrap {
    max-width: 990px;
  }

  .item-grid {
    margin-top: -3px;
  }

  .item-card img {
    height: 134px;
    aspect-ratio: auto;
    object-fit: cover;
  }

  .item-card figcaption {
    padding-top: 7px;
  }

  .items-note {
    margin-top: 8px;
    color: #bfa15f;
  }
}