/* ============================================================
   LAST ME — style.css
   Design: Luxury skincare / Milky Glow
   ============================================================ */

/* ---- TOKENS ---- */
:root {
  --ink:        #141414;
  --ink-2:      rgba(20,20,20,.72);
  --ink-3:      rgba(20,20,20,.44);
  --paper:      #fbfaf8;
  --paper-2:    #f6f4f0;

  --gold:       #c9b37a;
  --gold-light: rgba(201,179,122,.22);
  --gold-mid:   rgba(201,179,122,.48);
  --gold-glow:  rgba(201,179,122,.14);

  --serif: "Noto Serif JP", ui-serif, "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans:  "Noto Sans JP",  ui-sans-serif, system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;

  --radius-sm:  10px;
  --radius:     18px;
  --radius-lg:  28px;

  --container:  1120px;
  --section-v:  clamp(64px, 10vw, 120px);

  --hero-bg-mobile:  url("https://www.genspark.ai/api/files/s/ydcHwj6c?cache_control=3600");
  --hero-bg-desktop: url("https://www.genspark.ai/api/files/s/jSqdT2a3?cache_control=3600");

  --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
a  { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; }
p  { margin: 0; }
button { font-family: var(--sans); }

/* ---- SCROLL BEHAVIOR ---- */
html { scroll-behavior: smooth; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .35s var(--ease-out), box-shadow .35s var(--ease-out);
}
.site-header.scrolled {
  background: rgba(251,250,248,.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(20,20,20,.06), 0 8px 24px rgba(20,20,20,.06);
}
.header__inner {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding: 0 18px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.header__logo {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: .18em;
  font-weight: 400;
  color: var(--ink);
  transition: opacity .2s;
}
.header__logo:hover { opacity: .7; }

.header__nav {
  display: none;
  align-items: center;
  gap: 4px;
}
@media (min-width: 800px) {
  .header__nav { display: flex; }
}
.nav__link {
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  border-radius: 999px;
  color: var(--ink-2);
  transition: color .18s, background .18s;
}
.nav__link:hover { color: var(--ink); background: rgba(20,20,20,.05); }
.nav__link--cta {
  margin-left: 6px;
  color: var(--ink);
  border: 1px solid var(--gold-mid);
  background: rgba(255,255,255,.62);
  box-shadow: 0 4px 16px var(--gold-glow);
  transition: transform .18s, box-shadow .18s, background .18s;
}
.nav__link--cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 32px var(--gold-glow);
  background: rgba(255,255,255,.9);
  color: var(--ink);
}

/* Hamburger */
.header__menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  padding: 6px;
  cursor: pointer;
  border-radius: 8px;
  transition: background .18s;
}
@media (min-width: 800px) { .header__menu-btn { display: none; } }
.header__menu-btn:hover { background: rgba(20,20,20,.06); }
.header__menu-btn span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .28s var(--ease-out), opacity .18s;
  transform-origin: center;
}
.header__menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.header__menu-btn.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.header__menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: 0;
  transition: max-height .38s var(--ease-out), padding .28s var(--ease-out);
  background: rgba(251,250,248,.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 0 18px;
  border-top: 1px solid transparent;
}
.mobile-menu.open {
  max-height: 280px;
  padding: 12px 18px 20px;
  border-top-color: rgba(20,20,20,.06);
}
@media (min-width: 800px) { .mobile-menu { display: none !important; } }
.mobile-nav__link {
  padding: 14px 4px;
  font-size: 15px;
  color: var(--ink-2);
  border-bottom: 1px solid rgba(20,20,20,.06);
  transition: color .18s;
}
.mobile-nav__link:last-child { border-bottom: none; }
.mobile-nav__link--cta {
  color: var(--ink);
  font-weight: 500;
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section__inner {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding: var(--section-v) 18px;
}
@media (min-width: 600px) {
  .section__inner { padding-inline: 28px; }
}

.section__label {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section__label::before {
  content: "";
  display: block;
  width: 32px;
  height: 1px;
  background: var(--gold);
}

.section__heading {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(26px, 4.5vw, 42px);
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--ink);
  margin-bottom: clamp(14px, 2vw, 20px);
}

.section__sub {
  font-size: clamp(14px, 3.5vw, 16px);
  color: var(--ink-2);
  line-height: 1.9;
  max-width: 56ch;
  margin-bottom: clamp(32px, 5vw, 56px);
}

/* ============================================================
   SCROLL ANIMATION
   ============================================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;       /* video が溢れないよう clip → hidden */
  background: var(--ink); /* 動画読み込み前のフォールバック */
}
@media (min-width: 900px) {
  .hero { align-items: center; }
}

/* ---- 動画ラッパー ---- */
.hero__video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

/* 動画本体：フル画面カバー */
.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  /* 動画フェードイン */
  opacity: 0;
  animation: videoFadeIn 1.2s .1s ease-out forwards;
}
@keyframes videoFadeIn {
  to { opacity: 1; }
}

/* ---- グラデーションオーバーレイ（読みやすさ確保）---- */
.hero__video-overlay {
  position: absolute;
  inset: 0;
  /* モバイル：左上〜中央にホワイトグロー、下部も少し引き締め */
  background:
    radial-gradient(1100px 800px at 16% 22%,
      rgba(255,255,255,.78) 0%,
      rgba(255,255,255,.42) 36%,
      rgba(255,255,255,.00) 65%),
    linear-gradient(180deg,
      rgba(10,10,10,.22) 0%,
      rgba(10,10,10,.00) 30%,
      rgba(10,10,10,.00) 65%,
      rgba(10,10,10,.30) 100%);
}
@media (min-width: 900px) {
  .hero__video-overlay {
    background:
      radial-gradient(1400px 900px at 20% 38%,
        rgba(255,255,255,.82) 0%,
        rgba(255,255,255,.46) 40%,
        rgba(255,255,255,.00) 68%),
      linear-gradient(90deg,
        rgba(255,255,255,.30) 0%,
        rgba(255,255,255,.00) 55%),
      linear-gradient(180deg,
        rgba(10,10,10,.18) 0%,
        rgba(10,10,10,.00) 25%,
        rgba(10,10,10,.00) 70%,
        rgba(10,10,10,.24) 100%);
  }
}

/* inner はオーバーレイより前面に */
.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__inner {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding: 96px 18px 60px;
  display: grid;
  gap: 18px;
  /* z-index は上で一括指定済み */
}
@media (min-width: 900px) {
  .hero__inner {
    padding: 80px 28px;
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
  }
}

.hero__copy {
  max-width: 560px;
  padding: 26px 22px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.40);
  border: 1px solid rgba(20,20,20,.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 24px 80px rgba(20,20,20,.09);
  opacity: 0;
  transform: translateY(32px);
  animation: heroFadeIn .9s .25s var(--ease-out) forwards;
}
@media (min-width: 900px) {
  .hero__copy { padding: 32px 28px; }
}

@keyframes heroFadeIn {
  to { opacity: 1; transform: translateY(0); }
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: .20em;
  text-transform: uppercase;
  color: rgba(20,20,20,.62);
  margin-bottom: 2px;
}
.hero__kicker::before {
  content: "";
  width: 42px;
  height: 1px;
  background: linear-gradient(90deg, rgba(201,179,122,.0), rgba(201,179,122,.9));
}

h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 7.2vw, 62px);
  line-height: 1.08;
  letter-spacing: .02em;
  margin: 14px 0 12px;
}

.hero__lead {
  color: var(--ink-2);
  font-size: clamp(14px, 3.8vw, 16px);
  line-height: 1.9;
  margin-bottom: 20px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.pill {
  font-size: 12px;
  letter-spacing: .06em;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.60);
  border: 1px solid rgba(201,179,122,.30);
  box-shadow: 0 6px 20px rgba(20,20,20,.05);
  transition: background .18s, box-shadow .18s;
}
.pill:hover {
  background: rgba(255,255,255,.9);
  box-shadow: 0 10px 32px rgba(201,179,122,.18);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

/* ---- buttons shared ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: .06em;
  border: 1px solid rgba(20,20,20,.12);
  background: rgba(255,255,255,.72);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: transform .18s var(--ease-out), box-shadow .18s, background .18s;
}
.btn:hover  { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(20,20,20,.10); }
.btn:active { transform: translateY(0); }

.btn--primary {
  border-color: var(--gold-mid);
  background: linear-gradient(160deg, rgba(255,255,255,.82), rgba(255,255,255,.64));
  box-shadow: 0 14px 48px var(--gold-glow);
}
.btn--primary:hover {
  box-shadow: 0 20px 56px rgba(201,179,122,.28);
  background: rgba(255,255,255,.94);
}
.btn--primary .fa-arrow-right {
  font-size: 12px;
  transition: transform .22s var(--ease-out);
}
.btn--primary:hover .fa-arrow-right { transform: translateX(3px); }

.btn--ghost { background: rgba(255,255,255,.44); }

/* Scroll hint */
.hero__scroll {
  position: absolute;
  z-index: 1;
  left: 18px;
  bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(20,20,20,.58);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.36);
  border: 1px solid rgba(20,20,20,.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: opacity .22s, background .22s;
  opacity: 0;
  animation: heroFadeIn .7s 1.1s var(--ease-out) forwards;
}
.hero__scroll:hover { background: rgba(255,255,255,.62); opacity: 1 !important; }

.scroll-wheel {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(20,20,20,.24);
  border-radius: 999px;
  position: relative;
  flex-shrink: 0;
}
.scroll-wheel::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 4px;
  width: 2px;
  height: 6px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(201,179,122,.9), rgba(20,20,20,.0));
  border-radius: 2px;
  animation: wheel 1.5s ease-in-out infinite;
}
@keyframes wheel {
  0%   { transform: translate(-50%, 0);   opacity: .95; }
  70%  { transform: translate(-50%, 5px); opacity: .12; }
  100% { transform: translate(-50%, 0);   opacity: .85; }
}

/* ============================================================
   CONCERN
   ============================================================ */
.concern { background: var(--paper); }

.concern__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .concern__grid { grid-template-columns: repeat(3, 1fr); }
}

.concern__card {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.7);
  border: 1px solid rgba(20,20,20,.06);
  box-shadow: 0 8px 32px rgba(20,20,20,.04);
  transition: transform .28s var(--ease-out), box-shadow .28s;
}
.concern__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 56px rgba(20,20,20,.08);
}

.concern__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(201,179,122,.18), rgba(201,179,122,.06));
  border: 1px solid rgba(201,179,122,.22);
  display: grid;
  place-items: center;
  font-size: 20px;
  color: var(--gold);
  margin-bottom: 16px;
}
.concern__title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: .04em;
  margin-bottom: 10px;
}
.concern__text {
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.85;
}

/* ============================================================
   INGREDIENTS
   ============================================================ */
.ingredients { background: var(--paper-2); }

.ingredients__grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  margin-bottom: clamp(32px, 5vw, 52px);
}
@media (min-width: 700px) {
  .ingredients__grid { grid-template-columns: 1fr 1fr; }
}

.ing-card {
  position: relative;
  padding: 36px 28px 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(20,20,20,.06);
  transition: transform .3s var(--ease-out), box-shadow .3s;
}
.ing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(20,20,20,.08);
}
.ing-card--nia {
  background: linear-gradient(150deg, #fdfcf9 0%, #f7f4ee 100%);
  box-shadow: 0 8px 36px rgba(201,179,122,.10);
}
.ing-card--bak {
  background: linear-gradient(150deg, #f9fbfd 0%, #eef4f0 100%);
  box-shadow: 0 8px 36px rgba(110,160,130,.08);
}

.ing-card__badge {
  position: absolute;
  top: 28px;
  right: 28px;
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 300;
  letter-spacing: -.02em;
  color: var(--gold);
  opacity: .30;
}
.ing-card--bak .ing-card__badge { color: #6ea882; }

.ing-card__label {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.ing-card--bak .ing-card__label { color: #6ea882; }

.ing-card__name {
  font-family: var(--serif);
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 400;
  letter-spacing: .04em;
  margin-bottom: 16px;
}
.ing-card__desc {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.85;
  margin-bottom: 20px;
}
.ing-card__benefits {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ing-card__benefits li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--ink-2);
}
.ing-card__benefits .fa-check {
  color: var(--gold);
  font-size: 11px;
  flex-shrink: 0;
}
.ing-card--bak .ing-card__benefits .fa-check { color: #6ea882; }

/* Free formula */
.free-formula {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(201,179,122,.18);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.free-formula__label {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  white-space: nowrap;
}
.free-formula__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.free-tag {
  font-size: 12px;
  letter-spacing: .04em;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.8);
  border: 1px solid rgba(201,179,122,.24);
  color: var(--ink-2);
}

/* ============================================================
   ROUTINE
   ============================================================ */
.routine { background: var(--paper); }

.routine__steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 640px;
  margin-bottom: 28px;
}

.routine__step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px 0;
}

.routine__connector {
  width: 2px;
  height: 28px;
  margin-left: 21px;
  background: linear-gradient(180deg, var(--gold-mid), transparent);
  flex-shrink: 0;
}

.step__num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: linear-gradient(145deg, rgba(201,179,122,.20), rgba(201,179,122,.06));
  border: 1px solid rgba(201,179,122,.30);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--gold);
}

.step__title {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .03em;
  margin-bottom: 8px;
}
.step__text {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.85;
}

.routine__note {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--ink-3);
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,.6);
  border: 1px solid rgba(20,20,20,.06);
  letter-spacing: .04em;
}
.routine__note .fa-moon { color: var(--gold); }

/* ============================================================
   BUY
   ============================================================ */
.buy { background: var(--paper-2); }

.buy__heading { text-align: center; margin-bottom: clamp(32px, 5vw, 52px); }

.buy__card {
  max-width: 620px;
  margin-inline: auto;
  padding: clamp(28px, 4vw, 44px);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.70);
  border: 1px solid rgba(201,179,122,.22);
  box-shadow: 0 24px 80px rgba(201,179,122,.12), 0 4px 16px rgba(20,20,20,.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.buy__badge {
  display: inline-block;
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(201,179,122,.28), rgba(201,179,122,.14));
  border: 1px solid rgba(201,179,122,.35);
  color: var(--ink-2);
  margin-bottom: 14px;
}

.buy__product-name {
  font-family: var(--serif);
  font-size: clamp(20px, 3.5vw, 26px);
  font-weight: 400;
  letter-spacing: .04em;
  line-height: 1.4;
  margin-bottom: 6px;
}
.buy__product-name span {
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--ink-2);
}
.buy__product-size {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.buy__price-block {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(20,20,20,.06);
}
.buy__price {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: .02em;
  color: var(--ink);
}
.buy__price-tax {
  font-size: 13px;
  color: var(--ink-3);
}

.buy__features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}
.buy__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--ink-2);
}
.buy__features .fa-check-circle { color: var(--gold); font-size: 13px; }

.buy__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.buy__qty {
  display: flex;
  align-items: center;
  gap: 0;
  width: fit-content;
  border: 1px solid rgba(20,20,20,.10);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,.7);
}
.qty__btn {
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--ink-2);
  transition: background .15s, color .15s;
  display: grid;
  place-items: center;
}
.qty__btn:hover { background: rgba(20,20,20,.05); color: var(--ink); }
.qty__num {
  min-width: 40px;
  text-align: center;
  font-size: 15px;
  font-weight: 500;
  border-left: 1px solid rgba(20,20,20,.08);
  border-right: 1px solid rgba(20,20,20,.08);
  height: 44px;
  display: grid;
  place-items: center;
}

.btn--buy {
  width: 100%;
  height: 54px;
  font-size: 15px;
  letter-spacing: .08em;
  border-color: var(--gold-mid);
  background: linear-gradient(160deg, rgba(255,255,255,.88), rgba(255,255,255,.70));
  box-shadow: 0 16px 48px var(--gold-glow);
}
.btn--buy:hover {
  box-shadow: 0 20px 60px rgba(201,179,122,.30);
}
.btn--buy-sub {
  width: 100%;
  height: 48px;
  font-size: 13px;
  letter-spacing: .06em;
  background: rgba(255,255,255,.44);
  color: var(--ink-2);
  justify-content: center;
}
.btn--buy-sub:hover { color: var(--ink); }

/* Notification toast */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: rgba(20,20,20,.88);
  color: #fbfaf8;
  font-size: 13.5px;
  letter-spacing: .06em;
  padding: 14px 24px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  transition: transform .38s var(--ease-out), opacity .38s;
  opacity: 0;
  z-index: 200;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ============================================================
   FOUNDER
   ============================================================ */
.founder {
  background: var(--paper);
  overflow: hidden;
}

.founder__inner {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding: var(--section-v) 18px;
  display: grid;
  gap: clamp(40px, 7vw, 88px);
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 600px) {
  .founder__inner { padding-inline: 28px; }
}
@media (min-width: 860px) {
  .founder__inner {
    grid-template-columns: 1fr 1.1fr;
  }
}

/* ---- 写真エリア ---- */
.founder__photo-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  margin-inline: auto;
}
@media (min-width: 860px) {
  .founder__photo-wrap { max-width: 100%; margin-inline: 0; }
}

.founder__photo-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--paper-2);
  box-shadow:
    0 32px 80px rgba(20,20,20,.13),
    0 8px 24px rgba(20,20,20,.06);
}

.founder__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform .8s var(--ease-out);
}
.founder__photo-frame:hover .founder__photo {
  transform: scale(1.03);
}

/* ゴールドの枠線デコ（右下にオフセット） */
.founder__photo-deco {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(201,179,122,.35);
  pointer-events: none;
  /* 内側グラデーション：底部にゴールドの光 */
  background: linear-gradient(
    180deg,
    rgba(255,255,255,.00) 55%,
    rgba(201,179,122,.18) 100%
  );
}

/* フローティングバッジ */
.founder__badge {
  position: absolute;
  bottom: -18px;
  right: -10px;
  width: 96px;
  height: 96px;
  border-radius: 999px;
  background: linear-gradient(145deg, rgba(255,255,255,.92), rgba(251,250,248,.78));
  border: 1px solid rgba(201,179,122,.35);
  box-shadow:
    0 16px 48px rgba(201,179,122,.22),
    0 4px 12px rgba(20,20,20,.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}
@media (min-width: 860px) {
  .founder__badge {
    width: 110px;
    height: 110px;
    right: -20px;
    bottom: -22px;
  }
}
.founder__badge-num {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.02em;
}
@media (min-width: 860px) {
  .founder__badge-num { font-size: 34px; }
}
.founder__badge-unit {
  font-size: 14px;
  color: var(--gold);
  letter-spacing: .04em;
  line-height: 1;
  margin-top: 1px;
}
.founder__badge-label {
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--ink-3);
  margin-top: 4px;
  text-transform: uppercase;
}

/* ---- テキストエリア ---- */
.founder__content {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.founder__name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(38px, 6vw, 58px);
  letter-spacing: .14em;
  color: var(--ink);
  margin: 4px 0 8px;
  line-height: 1;
}

.founder__title {
  font-size: 13px;
  letter-spacing: .10em;
  color: var(--ink-3);
  margin-bottom: 22px;
}

/* 資格タグ */
.founder__certs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.cert-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-2);
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(201,179,122,.24);
  box-shadow: 0 4px 14px rgba(20,20,20,.04);
  white-space: nowrap;
}
.cert-tag .fa-circle-check {
  color: var(--gold);
  font-size: 11px;
  flex-shrink: 0;
}

/* ストーリー本文 */
.founder__story {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 30px;
  padding: 24px 22px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.52);
  border: 1px solid rgba(20,20,20,.05);
  box-shadow: 0 6px 24px rgba(20,20,20,.04);
}
.founder__story p {
  font-size: clamp(13.5px, 3.5vw, 15px);
  color: var(--ink-2);
  line-height: 1.95;
}
.founder__story strong {
  color: var(--ink);
  font-weight: 500;
}

/* SNSボタン */
.founder__socials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ink-2);
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(20,20,20,.10);
  transition: transform .18s var(--ease-out), box-shadow .18s, color .18s, background .18s;
}
.social-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(20,20,20,.08);
  color: var(--ink);
  background: rgba(255,255,255,.94);
}
.social-btn .fa-instagram { color: #c6699b; }
.social-btn .fa-tiktok    { color: #141414; }
.social-btn .fa-youtube   { color: #e03535; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: rgba(251,250,248,.8);
  padding: clamp(40px, 6vw, 64px) 18px 0;
}
.footer__inner {
  width: min(var(--container), 100%);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__logo {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: .18em;
  color: #fbfaf8;
  margin-bottom: 8px;
}
.footer__tagline {
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(251,250,248,.44);
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 4px;
}
.footer__links a {
  font-size: 13px;
  color: rgba(251,250,248,.58);
  padding: 8px 12px;
  border-radius: 8px;
  transition: color .18s, background .18s;
  letter-spacing: .04em;
}
.footer__links a:hover { color: #fbfaf8; background: rgba(255,255,255,.06); }

/* ============================================================
   HERO — PRODUCT VISUAL (右カラム)
   ============================================================ */
.hero__product {
  display: none;
}
@media (min-width: 900px) {
  .hero__product {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
  }
}

.hero__product-frame {
  position: relative;
  width: min(340px, 90%);
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 40px 100px rgba(20,20,20,.18),
    0 8px 24px rgba(20,20,20,.08);
  transition: transform .6s var(--ease-out), box-shadow .6s;
}
.hero__product-frame:hover {
  transform: translateY(-6px) rotate(1deg);
  box-shadow: 0 56px 120px rgba(20,20,20,.24), 0 12px 40px rgba(201,179,122,.20);
}

.hero__product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero__product-tag {
  position: absolute;
  bottom: 18px;
  left: 18px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(201,179,122,.30);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-2);
  box-shadow: 0 8px 24px rgba(20,20,20,.06);
}

/* ============================================================
   PRODUCT BANNER (全幅・Concern直前)
   ============================================================ */
.product-banner {
  position: relative;
  width: 100%;
  height: clamp(220px, 38vw, 520px);
  overflow: hidden;
}
.product-banner__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  display: block;
  transform: scale(1.05);
  transition: transform 1.2s var(--ease-out);
}
.product-banner:hover .product-banner__img {
  transform: scale(1.0);
}
.product-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10,10,10,.08) 0%,
    rgba(10,10,10,.44) 100%
  );
  display: flex;
  align-items: flex-end;
  padding: clamp(20px, 4vw, 48px);
}
.product-banner__text {
  font-family: var(--serif);
  font-size: clamp(16px, 3.2vw, 28px);
  font-weight: 300;
  letter-spacing: .12em;
  color: rgba(255,255,255,.90);
}

/* ============================================================
   GALLERY セクション
   ============================================================ */
.gallery {
  background: var(--paper-2);
  padding-top: var(--section-v);
  padding-bottom: var(--section-v);
}
.gallery__inner {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding: 0 18px clamp(28px, 4vw, 44px);
}
@media (min-width: 600px) {
  .gallery__inner { padding-inline: 28px; }
}

/* Masonry-like グリッド */
.gallery__grid {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding-inline: 18px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: auto;
}
@media (min-width: 600px) {
  .gallery__grid {
    padding-inline: 28px;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: 260px 260px;
    gap: 14px;
  }
}
@media (min-width: 900px) {
  .gallery__grid {
    grid-template-rows: 320px 320px;
    gap: 16px;
  }
}

.gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-2);
  cursor: pointer;
}
/* モバイル: 正方形 */
.gallery__item { aspect-ratio: 1 / 1; }

@media (min-width: 600px) {
  .gallery__item            { aspect-ratio: auto; grid-column: span 3; }
  .gallery__item--lg        { grid-column: span 5; grid-row: span 2; }
  .gallery__item--tall      { grid-column: span 3; grid-row: span 2; }
  .gallery__item--box       { grid-column: span 4; grid-row: span 1; }
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform .7s var(--ease-out), filter .4s;
}
.gallery__item:hover img {
  transform: scale(1.06);
  filter: brightness(1.04);
}

/* キャプションオーバーレイ */
.gallery__caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 28px 18px 16px;
  background: linear-gradient(0deg, rgba(10,10,10,.52) 0%, rgba(10,10,10,.00) 100%);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.82);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .32s, transform .32s var(--ease-out);
}
.gallery__item:hover .gallery__caption {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   BUY — リデザイン（左:ビジュアル / 右:情報）
   ============================================================ */
.buy__card {
  max-width: 960px;
  margin-inline: auto;
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(201,179,122,.22);
  box-shadow: 0 24px 80px rgba(201,179,122,.12), 0 4px 16px rgba(20,20,20,.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}
@media (min-width: 700px) {
  .buy__card {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* 左: 画像エリア */
.buy__visual {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.buy__visual-main {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background: var(--paper-2);
  box-shadow: 0 16px 48px rgba(20,20,20,.09);
}
.buy__visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform .55s var(--ease-out);
}
.buy__visual-main:hover .buy__visual-img {
  transform: scale(1.04);
}
/* サムネイル列 */
.buy__visual-thumbs {
  display: flex;
  gap: 8px;
}
.buy__thumb {
  flex: 1;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  padding: 0;
  background: none;
  cursor: pointer;
  transition: border-color .2s, transform .2s var(--ease-out);
  box-shadow: 0 4px 12px rgba(20,20,20,.06);
}
.buy__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .4s var(--ease-out);
}
.buy__thumb:hover { transform: translateY(-2px); }
.buy__thumb:hover img { transform: scale(1.08); }
.buy__thumb.active {
  border-color: var(--gold);
  box-shadow: 0 6px 20px rgba(201,179,122,.28);
}

/* ============================================================
   ACTIVE NAV STATE (JS-driven)
   ============================================================ */
.nav__link.active {
  color: var(--ink);
  background: rgba(201,179,122,.12);
}
.mobile-nav__link.active {
  color: var(--ink);
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  pointer-events: none;
  opacity: 0;
  transition: opacity .32s var(--ease-out);
}
.lightbox.open {
  pointer-events: auto;
  opacity: 1;
}
.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.lightbox__img {
  position: relative;
  z-index: 1;
  max-width: min(860px, 90vw);
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 40px 100px rgba(0,0,0,.5);
  transform: scale(.92);
  transition: transform .4s var(--ease-out);
}
.lightbox.open .lightbox__img {
  transform: scale(1);
}
.lightbox__close {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.22);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .18s, transform .18s;
}
.lightbox__close:hover {
  background: rgba(255,255,255,.28);
  transform: rotate(90deg);
}

/* ============================================================
   UTILITY
   ============================================================ */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.footer__bottom {
  width: min(var(--container), 100%);
  margin-inline: auto;
  padding: 18px 0;
  font-size: 11px;
  color: rgba(251,250,248,.32);
  letter-spacing: .08em;
}