/* MOMENT PLANNER 2027
   色を変えたら tools/build_assets.py の TEAL / MIST も合わせて画像を書き出し直す */
:root {
  --teal: #0c8479;        /* カタログ15ページのティール */
  --teal-deep: #0a4a45;
  --teal-soft: #a9cfca;
  --mist: #eef3f2;        /* PAGES 背景（中面画像の合成色） */
  --mist-2: #d6e7e7;      /* カタログ下段の淡いティール */
  --paper: #faf9f6;
  --white: #fff;
  --ink: #1c2626;
  --sub: #5b6766;
  --line: #d3dcdb;
  --gold: #b49a5f;
  --mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --gothic: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --serif-en: "Cormorant Garamond", "Times New Roman", serif;
  --sans-en: "Jost", "Futura", "Helvetica Neue", sans-serif;
  --header-h: 64px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--gothic);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: .04em;
  font-feature-settings: "palt" 0;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; }
.sp { display: none; }
@media (max-width: 767px) { .sp { display: inline; } .pc { display: none; } }

.wrap { width: min(1180px, 100% - 48px); margin-inline: auto; }
.wrap--narrow { width: min(760px, 100% - 48px); }
@media (max-width: 767px) { .wrap, .wrap--narrow { width: calc(100% - 32px); } }

.eyebrow {
  font-family: var(--sans-en);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .32em;
  color: var(--teal);
}
.patent {
  display: inline-block;
  margin-left: 1em;
  padding: 0 .7em;
  background: var(--teal);
  color: var(--white);
  font-family: var(--gothic);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1.9;
  vertical-align: middle;
}
.patent--lg { margin: 20px 0 0; font-size: 13px; padding: .15em 1em; }

/* ------------------------------------------------ header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 clamp(16px, 3vw, 40px);
  background: rgba(250, 249, 246, .94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  transform: translateY(-101%);
  transition: transform .45s var(--ease);
}
.site-header.is-visible, .site-header.is-open { transform: none; }
.logo-num { fill: var(--logo-num, #fff); }
.site-header__logo { display: block; width: 132px; color: var(--ink); --logo-num: var(--paper); }
.site-header__logo svg { display: block; width: 100%; height: auto; }
.gnav { display: flex; gap: clamp(14px, 2vw, 30px); margin-left: auto; }
.gnav a {
  font-family: var(--sans-en);
  font-size: 12px;
  letter-spacing: .18em;
  text-decoration: none;
  color: var(--sub);
  transition: color .2s;
}
.gnav a:hover { color: var(--teal); }
.site-header__buy {
  padding: 8px 20px;
  background: var(--teal);
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: .1em;
  transition: background .2s;
}
.site-header__buy:hover { background: var(--teal-deep); }
.menu-btn { display: none; }

@media (max-width: 1023px) {
  .site-header { gap: 12px; }
  .site-header__buy { margin-left: auto; padding: 6px 14px; font-size: 12px; }
  .menu-btn {
    display: grid;
    place-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
  }
  .menu-btn span { display: block; width: 22px; height: 1.5px; background: var(--ink); transition: transform .3s; }
  .is-open .menu-btn span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .is-open .menu-btn span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .gnav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity .25s, transform .25s, visibility .25s;
  }
  .is-open .gnav { visibility: visible; opacity: 1; transform: none; }
  .gnav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
}

/* ------------------------------------------------ hero */
.hero { background: var(--white); }
.hero__head {
  padding: clamp(28px, 4vw, 48px) 16px clamp(24px, 3vw, 36px);
  text-align: center;
}
.hero__logo { width: clamp(210px, 24vw, 300px); margin: 0 auto 14px; color: var(--ink); --logo-num: var(--white); }
.hero__logo svg { display: block; width: 100%; height: auto; }
.hero__type, .hero__term { font-size: clamp(12px, 1.2vw, 15px); font-weight: 500; line-height: 1.9; }
.hero__type { margin-bottom: 2px; }

.hero__stage {
  position: relative;
  overflow: hidden;
  background: var(--teal);
  padding: clamp(40px, 5vw, 64px) max(3vw, (100% - 1180px) / 2) clamp(56px, 7vw, 96px);
}
.hero__spread {
  position: relative;
  width: min(1100px, 100%);
  margin-inline: auto;
}
.hero__spread img { width: 100%; }

/* スポットライト：見開きの一部だけを明るく、ほかを暗くする */
.focus {
  position: absolute;
  left: 0; top: 0; width: 100%; height: 100%;
  border: 1px solid rgba(255, 255, 255, .85);
  box-shadow: 0 0 0 200vmax rgba(3, 38, 35, .62);
  opacity: 0;
  pointer-events: none;
  transition: left 1s var(--ease), top 1s var(--ease), width 1s var(--ease), height 1s var(--ease), opacity .8s, box-shadow 1.2s;
}
.focus.is-on { opacity: 1; }
.focus.is-free { box-shadow: 0 0 0 200vmax rgba(3, 38, 35, 0); border-color: transparent; }

.tag {
  position: absolute;
  top: -14px;
  z-index: 2;
  display: inline-flex;
  align-items: baseline;
  gap: .6em;
  padding: 3px 12px 3px;
  background: var(--white);
  color: var(--teal-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  line-height: 1.6;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .18);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .5s, transform .5s var(--ease);
}
.tag b { font-family: var(--sans-en); font-weight: 500; letter-spacing: .22em; color: var(--teal); }
.tag.is-on { opacity: 1; transform: none; }
.tag--year { left: 2%; }
.tag--month { left: 33.5%; }
.tag--week { left: 66.5%; }

.hero__caption {
  position: absolute;
  left: 50%;
  bottom: -46px;
  transform: translateX(-50%);
  color: var(--white);
  font-family: var(--mincho);
  font-size: clamp(15px, 1.6vw, 20px);
  letter-spacing: .16em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .4s;
}
.hero__caption.is-on { opacity: 1; }

.hero__title {
  position: absolute;
  top: clamp(40px, 5vw, 64px);
  right: max(2vw, (100% - 1240px) / 2);
  z-index: 3;
  padding: clamp(20px, 2.4vw, 34px) clamp(14px, 1.6vw, 22px);
  background: rgba(169, 207, 202, .9);
}
.hero__vertical {
  writing-mode: vertical-rl;
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(32px, 4.4vw, 62px);
  letter-spacing: .16em;
  line-height: 1.25;
  color: var(--ink);
}
.hero__vertical rt { font-size: .2em; letter-spacing: .5em; font-weight: 500; }
.hero__band {
  position: absolute;
  left: max(3vw, (100% - 1180px) / 2 + 40px);
  bottom: clamp(26px, 3.5vw, 48px);
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--serif-en);
  font-weight: 500;
  font-size: clamp(20px, 2.9vw, 40px);
  letter-spacing: .12em;
  line-height: 1.15;
  color: var(--ink);
}
.hero__band span { align-self: flex-start; padding: .12em .45em .08em; background: rgba(229, 238, 237, .88); }

.hero__replay {
  position: absolute;
  right: max(2vw, (100% - 1240px) / 2);
  bottom: 18px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, .5);
  background: transparent;
  color: var(--white);
  font-size: 12px;
  letter-spacing: .1em;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s, background .2s;
}
.hero__replay:hover { background: rgba(255, 255, 255, .12); }

.js .hero__title, .js .hero__band span { opacity: 0; transform: translateY(16px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js .hero__band span + span { transition-delay: .15s; }
.js .hero__spread img { opacity: 0; transform: scale(1.04); transition: opacity 1.2s, transform 2.4s var(--ease); }
.js .hero.is-ready .hero__spread img { opacity: 1; transform: none; }
.js .hero.is-done .hero__title, .js .hero.is-done .hero__band span { opacity: 1; transform: none; }
.js .hero.is-done .hero__replay { opacity: 1; pointer-events: auto; }

.hero__foot {
  position: relative;
  padding: clamp(36px, 4vw, 52px) 16px clamp(64px, 6vw, 84px);
  background: var(--mist-2);
  text-align: center;
  font-family: var(--mincho);
  font-size: clamp(17px, 2vw, 24px);
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: .08em;
}
.hero__foot mark { background: linear-gradient(transparent 12%, rgba(255, 255, 255, .8) 12%); color: inherit; padding: 0 .1em; }
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 1px;
  height: 44px;
  background: rgba(28, 38, 38, .2);
  overflow: hidden;
}
.scroll-cue span { position: absolute; inset: 0; background: var(--teal); font-size: 0; animation: cue 2.2s var(--ease) infinite; }
@keyframes cue { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(100%); } }

/* タブレット以下：「俯瞰する手帳」を横組みにして、見開きの下に並べる */
@media (max-width: 1023px) {
  .hero__stage {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 44px 4vw 28px;
  }
  .hero__spread { width: 100%; margin: 0; }
  /* ふりがなの行が見開きの下端に重なる位置まで引き上げる */
  .hero__title {
    position: relative;
    top: auto;
    right: auto;
    font-size: clamp(28px, 5.2vw, 44px);
    margin-top: -.72em;
    padding: 8px 20px 10px;
  }
  .hero__vertical {
    writing-mode: horizontal-tb;
    font-size: 1em;
    letter-spacing: .14em;
    line-height: 1.6;
  }
  .hero__vertical rt { font-size: .3em; letter-spacing: .12em; }
  /* 見開き下のキャプションが消えてから出す（同じ位置に重なるため） */
  .js .hero.is-done .hero__title { transition-delay: .4s; }
  .hero__band { position: static; margin-top: 12px; font-size: clamp(20px, 3.8vw, 32px); }
  .hero__replay { position: static; align-self: flex-end; margin-top: 24px; }
}
@media (max-width: 767px) {
  .patent { display: table; margin: 6px auto 0; }
  .hero__stage { padding: 34px 12px 20px; }
  .hero__title { padding: 6px 14px 8px; }
  .tag { top: -12px; padding: 1px 6px; font-size: 9px; gap: .4em; }
  .tag b { letter-spacing: .1em; }
  .hero__caption { bottom: -34px; font-size: 14px; }
  .hero__replay { font-size: 11px; padding: 4px 10px; }
}

/* ------------------------------------------------ section common */
section { position: relative; }
.concept, .structure, .business, .pages, .details, .lineup { padding: clamp(88px, 11vw, 160px) 0; }
.sec-head { text-align: center; margin-bottom: clamp(48px, 6vw, 80px); }
.sec-head h2 {
  margin-top: 14px;
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(25px, 3.3vw, 40px);
  line-height: 1.55;
  letter-spacing: .1em;
}
.sec-head__lead { margin-top: 22px; color: var(--sub); line-height: 2.1; }
.sec-head--light .eyebrow { color: var(--teal-soft); }
.sec-head--light .sec-head__lead { color: rgba(255, 255, 255, .78); }

/* ------------------------------------------------ concept */
.concept { text-align: center; background: var(--paper); }
.concept__lead {
  margin-top: 18px;
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.6;
  letter-spacing: .12em;
}
.concept__word {
  display: inline-flex;
  align-items: baseline;
  gap: 1.2em;
  margin: clamp(40px, 5vw, 64px) auto;
  padding: 14px 32px;
  border-top: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
}
.concept__word dt { font-family: var(--serif-en); font-style: italic; font-size: clamp(28px, 3vw, 38px); letter-spacing: .04em; }
.concept__word dt span { font-family: var(--mincho); font-style: normal; font-size: 14px; margin-left: .4em; color: var(--sub); }
.concept__word dd { font-family: var(--mincho); font-size: clamp(18px, 2vw, 22px); font-weight: 600; letter-spacing: .2em; }
.concept__body { font-family: var(--mincho); font-size: clamp(15px, 1.4vw, 17px); line-height: 2.4; letter-spacing: .08em; }
.concept__body p + p { margin-top: 1.6em; }
@media (max-width: 767px) {
  .concept__word { flex-direction: column; gap: 0; padding: 12px 24px; }
  .concept__body { text-align: left; }
}

/* ------------------------------------------------ structure */
.structure { background: var(--white); }
.structure .sec-head h2 { font-size: clamp(26px, 3.6vw, 44px); }
.structure__grid {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.structure__fig img { width: 100%; background: var(--mist-2); }
.structure__catch {
  margin-bottom: 28px;
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.9;
  letter-spacing: .08em;
  color: var(--teal-deep);
}
.structure__text > p + p { margin-top: 1em; }
.structure__text strong { font-weight: 700; background: linear-gradient(transparent 62%, rgba(12, 132, 121, .18) 62%); }
.structure__steps { margin-top: 34px; border-top: 1px solid var(--line); }
.structure__steps li {
  display: grid;
  grid-template-columns: 3em 6.5em 1fr;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}
.structure__steps span { font-family: var(--serif-en); font-size: 22px; color: var(--teal); }
.structure__steps b { font-family: var(--sans-en); font-weight: 500; font-size: 13px; letter-spacing: .22em; }
.structure__wide {
  margin-top: clamp(64px, 8vw, 110px);
  padding: clamp(24px, 4vw, 56px) clamp(16px, 5vw, 80px) clamp(20px, 3vw, 36px);
  background: var(--mist);
}
.structure__wide img { margin-inline: auto; width: min(900px, 100%); }
.structure__wide figcaption { margin-top: 18px; text-align: center; font-size: 13px; color: var(--sub); }
@media (max-width: 859px) {
  .structure__grid { grid-template-columns: 1fr; }
  .structure__fig { width: min(520px, 100%); margin-inline: auto; }
  .structure__steps li { grid-template-columns: 2.6em 5.6em 1fr; font-size: 14px; }
}

/* ------------------------------------------------ business */
.business { background: var(--teal-deep); color: var(--white); }
.span-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.6vw, 40px);
  counter-reset: span;
}
.span-card { padding-top: 26px; border-top: 1px solid var(--gold); }
.span-card__term {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--sans-en);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--teal-soft);
}
.span-card__term span { font-family: var(--mincho); font-weight: 600; font-size: 34px; letter-spacing: .1em; color: var(--white); }
.span-card h3 {
  margin: 18px 0 14px;
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(18px, 1.7vw, 21px);
  line-height: 1.7;
  letter-spacing: .06em;
}
.span-card p:last-child { color: rgba(255, 255, 255, .8); font-size: 14px; }
.persona {
  margin: clamp(56px, 7vw, 88px) auto 0;
  max-width: 820px;
  padding: clamp(24px, 3vw, 36px) clamp(20px, 4vw, 48px);
  border: 1px solid rgba(255, 255, 255, .22);
}
.persona__title { font-family: var(--mincho); font-weight: 600; font-size: 18px; letter-spacing: .12em; text-align: center; margin-bottom: 16px; }
.persona ul { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 32px; }
.persona li { position: relative; padding-left: 1.6em; font-size: 14px; color: rgba(255, 255, 255, .88); }
.persona li::before { content: ""; position: absolute; left: 0; top: .62em; width: .8em; height: .45em; border-left: 1.5px solid var(--teal-soft); border-bottom: 1.5px solid var(--teal-soft); transform: rotate(-45deg); }
@media (max-width: 859px) {
  .span-list { grid-template-columns: 1fr; gap: 44px; }
  .persona ul { grid-template-columns: 1fr; }
}

/* ------------------------------------------------ pages */
.pages { background: var(--mist); }
.tabs__list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: clamp(32px, 4vw, 52px);
}
.tabs__list button {
  min-width: 96px;
  padding: 9px 20px;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .1em;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.tabs__list button:hover { border-color: var(--teal); }
.tabs__list button[aria-selected="true"] { background: var(--teal); border-color: var(--teal); color: var(--white); }
.tabs__panel {
  display: grid;
  grid-template-columns: 7fr 4fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
  animation: fade .5s var(--ease);
}
.tabs__panel[hidden] { display: none; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.tabs__en { font-family: var(--sans-en); font-size: 12px; letter-spacing: .3em; color: var(--teal); }
.tabs__text h3 { margin: 8px 0 16px; font-family: var(--mincho); font-weight: 600; font-size: clamp(20px, 2vw, 25px); letter-spacing: .08em; line-height: 1.6; }
.tabs__note { margin-top: 14px; font-size: 13px; color: var(--sub); }
@media (max-width: 859px) {
  .tabs__panel { grid-template-columns: 1fr; }
  .tabs__list button { min-width: 0; flex: 1 1 18%; padding: 8px 4px; font-size: 13px; letter-spacing: .02em; }
}

/* ------------------------------------------------ details */
.details { background: var(--paper); }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(36px, 4vw, 56px) clamp(20px, 2.6vw, 36px); }
.detail figure { aspect-ratio: 4 / 3; overflow: hidden; background: var(--mist); }
.detail img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.detail:hover img { transform: scale(1.04); }
.detail h3 { margin: 18px 0 8px; font-family: var(--mincho); font-weight: 600; font-size: 18px; letter-spacing: .08em; line-height: 1.6; }
.detail p { font-size: 14px; color: var(--sub); }
.details__note { margin-top: clamp(40px, 5vw, 64px); font-size: 12px; color: var(--sub); line-height: 1.8; }
@media (max-width: 859px) { .detail-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 559px) { .detail-grid { grid-template-columns: 1fr; } }

/* ------------------------------------------------ lineup */
.lineup { background: var(--white); }
.product { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.product__main { aspect-ratio: 1; background: #f3f3f1; overflow: hidden; }
.product__main img { width: 100%; height: 100%; object-fit: cover; transition: opacity .3s; }
.product__main img.is-loading { opacity: .3; }
.product__thumbs { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-top: 8px; }
.product__thumbs button { display: block; width: 100%; padding: 0; border: 1px solid transparent; background: none; cursor: pointer; opacity: .6; transition: opacity .2s, border-color .2s; }
.product__thumbs button:hover { opacity: 1; }
.product__thumbs button[aria-current="true"] { opacity: 1; border-color: var(--teal); }
.product__series { font-family: var(--sans-en); font-size: 12px; letter-spacing: .3em; color: var(--teal); }
.product__series span { margin-left: 1em; padding: 1px 8px; border: 1px solid var(--teal); letter-spacing: .16em; font-size: 10px; }
.product__name { margin: 12px 0 18px; font-family: var(--mincho); font-weight: 600; font-size: clamp(24px, 2.6vw, 32px); line-height: 1.5; letter-spacing: .08em; }
.product__price { font-family: var(--serif-en); font-size: 38px; font-weight: 600; line-height: 1.3; letter-spacing: .02em; }
.product__price small { font-family: var(--gothic); font-size: 13px; font-weight: 400; margin-left: .2em; }
.product__price span { display: block; font-family: var(--gothic); font-size: 13px; font-weight: 400; color: var(--sub); letter-spacing: .06em; }
.swatches { margin: 28px 0 0; padding: 0; border: 0; }
.swatches legend { padding: 0; margin-bottom: 12px; font-size: 14px; }
.swatches label { display: inline-block; margin-right: 14px; cursor: pointer; }
.swatches input { position: absolute; opacity: 0; pointer-events: none; }
.swatches span {
  display: block;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c);
  font-size: 0;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .1);
  outline: 1px solid transparent;
  outline-offset: 4px;
  transition: outline-color .2s;
}
.swatches input:checked + span { outline-color: var(--ink); }
.swatches input:focus-visible + span { outline: 2px solid var(--teal); }
.product__code { margin-top: 18px; font-size: 13px; color: var(--sub); letter-spacing: .06em; }
.product__code b { font-family: var(--sans-en); font-weight: 500; color: var(--ink); letter-spacing: .1em; }
.buy { display: grid; gap: 10px; margin-top: 28px; }
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6em;
  min-height: 54px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .1em;
  text-decoration: none;
  transition: background .2s, color .2s, border-color .2s;
}
.btn::after { content: ""; width: 7px; height: 7px; border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor; transform: rotate(45deg); }
.btn--shop { background: var(--teal); color: var(--white); border: 1px solid var(--teal); }
.btn--shop:hover { background: var(--teal-deep); border-color: var(--teal-deep); }
.btn--amazon { background: var(--white); color: var(--ink); border: 1px solid var(--ink); }
.btn--amazon:hover { background: var(--ink); color: var(--white); }
.spec { width: 100%; margin-top: 40px; border-collapse: collapse; font-size: 13px; line-height: 1.8; }
.spec caption { text-align: left; font-family: var(--mincho); font-weight: 600; font-size: 16px; letter-spacing: .12em; padding-bottom: 10px; }
.spec th, .spec td { padding: 11px 0; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
.spec tr:last-child th, .spec tr:last-child td { border-bottom: 1px solid var(--line); }
.spec th { width: 7.5em; font-weight: 500; color: var(--sub); }
@media (max-width: 859px) { .product { grid-template-columns: 1fr; } }

/* ------------------------------------------------ shop / footer */
.shop { padding: clamp(80px, 9vw, 120px) 0; background: var(--teal); color: var(--white); text-align: center; }
.shop .eyebrow { color: var(--mist-2); }
.shop__lead { margin: 16px 0 36px; font-family: var(--mincho); font-weight: 600; font-size: clamp(22px, 2.8vw, 32px); letter-spacing: .1em; line-height: 1.6; }
.shop__links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 600px; margin-inline: auto; }
.shop .btn--shop { background: var(--white); color: var(--teal-deep); border-color: var(--white); }
.shop .btn--shop:hover { background: var(--mist-2); }
.shop .btn--amazon { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, .7); }
.shop .btn--amazon:hover { background: var(--white); color: var(--ink); }
@media (max-width: 559px) { .shop__links { grid-template-columns: 1fr; } }

.site-footer { padding: 48px 16px 40px; text-align: center; background: var(--paper); }
.site-footer img { width: 200px; margin: 0 auto 16px; }
.site-footer small { font-size: 11px; color: var(--sub); }

.to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: rgba(28, 38, 38, .75);
  color: var(--white);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.to-top.is-visible { opacity: 1; pointer-events: auto; }

/* ------------------------------------------------ reveal */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}