/* ============================================================
   VITAL INFINITY 365 — Sleep Management Innovation
   Tone: Dark × Premium Gold
   ============================================================ */

:root{
  /* Palette */
  --bg:        #0A0A0B;
  --bg-soft:   #121215;
  --bg-elev:   #17171B;
  --fg:        #F5F5F7;
  --fg-soft:   #D9D9DE;
  --muted:     #8E8E93;
  --line:      rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.18);
  --gold:      #C9A961;
  --gold-deep: #A8843E;
  --gold-mist: rgba(201,169,97,.18);

  /* Typography */
  --serif-en: "Cormorant Garamond", "Shippori Mincho", serif;
  --serif-jp: "Shippori Mincho", "Noto Serif JP", serif;
  --sans-en:  "Inter", "Helvetica Neue", sans-serif;
  --sans-jp:  "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;

  /* Sizing */
  --container: 1320px;
  --gutter: clamp(20px, 4vw, 56px);

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --dur: 700ms;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg);-webkit-text-size-adjust:100%;overflow-x:clip}
body{
  margin:0;
  font-family:var(--sans-jp);
  font-weight:300;
  font-size:16px;
  line-height:1.7;
  color:var(--fg);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
  max-width:100vw;
}
img,video,svg{max-width:100%}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}

::selection{background:var(--gold);color:var(--bg)}

/* ============================================================
   Atmospheric layers
   ============================================================ */

.grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;
  opacity:.06;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.halo{
  position:fixed;width:520px;height:520px;border-radius:50%;
  pointer-events:none;z-index:2;
  background:radial-gradient(circle at center, rgba(201,169,97,.10), transparent 65%);
  transform:translate(-50%,-50%);
  transition:opacity 600ms var(--ease);
  opacity:0;
  filter:blur(8px);
  mix-blend-mode:screen;
}
@media (hover:hover){
  .halo{opacity:.9}
}
@media (prefers-reduced-motion: reduce){
  .halo{display:none}
}

/* ============================================================
   Navigation
   ============================================================ */

.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  padding:18px var(--gutter);
  background:linear-gradient(180deg, rgba(10,10,11,.85), rgba(10,10,11,.0));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:background 400ms var(--ease), border-color 400ms var(--ease), padding 400ms var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  padding:12px var(--gutter);
  background:rgba(10,10,11,.92);
  border-bottom-color:var(--line);
}

.nav__brand{
  display:flex;align-items:center;gap:12px;
  color:var(--fg);
  transition:opacity 300ms var(--ease);
}
.nav__brand:hover{opacity:.85}

.brand__logo{
  display:block;
  height:30px;width:auto;
}

.nav__menu{
  display:flex;gap:36px;justify-self:center;
}
.nav__menu a{
  font-family:var(--sans-en);font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--fg-soft);opacity:.75;
  padding:8px 0;position:relative;
  transition:opacity 300ms var(--ease), color 300ms var(--ease);
}
.nav__menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--gold);
  transform:scaleX(0);transform-origin:left;
  transition:transform 400ms var(--ease);
}
.nav__menu a:hover{opacity:1;color:var(--gold)}
.nav__menu a:hover::after{transform:scaleX(1)}

.nav__cta{
  justify-self:end;
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-family:var(--sans-en);font-size:11px;letter-spacing:.25em;text-transform:uppercase;
  color:var(--fg);
  transition:background 300ms var(--ease), border-color 300ms var(--ease), color 300ms var(--ease);
}
.nav__cta svg{width:14px;height:14px;transition:transform 300ms var(--ease)}
.nav__cta:hover{background:var(--gold);border-color:var(--gold);color:var(--bg)}
.nav__cta:hover svg{transform:translateX(3px)}

@media (max-width: 880px){
  .nav__menu{display:none}
  .nav{grid-template-columns:1fr auto}
  .brand__name{display:none}
}

/* ============================================================
   HERO
   ============================================================ */

.hero{
  position:relative;
  min-height:100vh;min-height:100dvh;
  display:grid;align-items:end;
  padding:140px var(--gutter) 90px;
  isolation:isolate;
}
.hero__bg{
  position:absolute;inset:0;z-index:-2;overflow:hidden;
}
.hero__photo{
  width:100%;height:100%;object-fit:cover;object-position:50% 30%;
  filter:saturate(.95) contrast(1.05);
  transform:scale(1.08);
  animation: heroZoom 18s ease-out infinite alternate;
}
@keyframes heroZoom{
  from{transform:scale(1.05) translateY(-1%)}
  to  {transform:scale(1.12) translateY(1%)}
}
.hero__veil{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(10,10,11,.55) 0%, rgba(10,10,11,.35) 30%, rgba(10,10,11,.85) 80%, rgba(10,10,11,1) 100%),
    radial-gradient(900px 600px at 80% 20%, rgba(201,169,97,.10), transparent 60%);
}

.hero__rule{
  position:absolute;left:var(--gutter);right:var(--gutter);top:90px;
  height:1px;background:var(--line);z-index:1;
}
.hero__rule--bottom{top:auto;bottom:60px;background:var(--line)}

.hero__series,.hero__edition{
  position:absolute;z-index:2;
  font-family:var(--sans-en);font-size:10px;letter-spacing:.4em;color:var(--gold);
  text-transform:uppercase;
  display:flex;gap:10px;align-items:center;
}
.hero__series{top:74px;left:var(--gutter)}
.hero__series .num{font-family:var(--serif-en);font-style:italic;font-size:14px;letter-spacing:.05em}
.hero__edition{top:74px;right:var(--gutter);color:var(--muted)}
.hero__edition .dot{color:var(--gold)}

.hero__inner{
  max-width:var(--container);width:100%;margin:0 auto;
  position:relative;z-index:2;
}

.hero__kicker{
  display:flex;align-items:center;gap:14px;
  font-family:var(--sans-en);font-size:11px;letter-spacing:.4em;color:var(--gold);
  text-transform:uppercase;
  margin-bottom:28px;
  flex-wrap:nowrap;
  min-width:0;
}
.hero__kicker .line{flex:0 1 56px;min-width:20px;height:1px;background:var(--gold);opacity:.6}
.hero__kicker .text{white-space:nowrap;font-size:clamp(9px,2.6vw,11px);letter-spacing:clamp(.15em,.4vw,.4em)}

.hero__title{
  font-family:var(--serif-en);
  font-weight:300;
  font-size:clamp(64px, 11vw, 168px);
  line-height:.92;
  letter-spacing:-.02em;
  margin:0 0 28px;
  color:var(--fg);
}
.hero__title .row{display:block;overflow:hidden}
.hero__title .word{display:inline-block;transform:translateY(110%);transition:transform 1100ms var(--ease-out)}
.hero__title .word em{font-style:italic;color:var(--gold);font-weight:300}
.hero__title .italic{font-style:italic;color:var(--gold)}
.hero__title .word:nth-child(1){transition-delay:120ms}
.hero__title .row + .row .word{transition-delay:280ms}
.hero__title .row + .row .word + .word{transition-delay:380ms}

.hero.is-in .hero__title .word{transform:translateY(0)}

.hero__jp{
  font-family:var(--serif-jp);
  font-weight:400;
  font-size:clamp(15px, 1.5vw, 19px);
  letter-spacing:.18em;
  color:var(--fg-soft);
  margin:0 0 56px;
  opacity:0;transform:translateY(20px);
  transition:opacity 900ms 600ms var(--ease), transform 900ms 600ms var(--ease);
}
.hero__jp .jp-accent{color:var(--gold);border-bottom:1px solid var(--gold-mist);padding-bottom:3px}
.hero.is-in .hero__jp{opacity:1;transform:none}

.hero__meta{
  display:flex;flex-wrap:wrap;gap:clamp(28px,4vw,60px);
  border-top:1px solid var(--line);
  padding-top:28px;max-width:780px;
  opacity:0;transform:translateY(20px);
  transition:opacity 900ms 800ms var(--ease), transform 900ms 800ms var(--ease);
}
.hero.is-in .hero__meta{opacity:1;transform:none}
.hero__meta div{display:flex;flex-direction:column;gap:6px;min-width:130px}
.hero__meta b{
  font-family:var(--serif-en);font-weight:400;font-style:italic;
  color:var(--gold);font-size:18px;letter-spacing:.04em;
}
.hero__meta span{
  font-family:var(--sans-en);font-size:10px;letter-spacing:.3em;color:var(--muted);
  text-transform:uppercase;
}

.hero__scroll{
  position:absolute;right:var(--gutter);bottom:0;
  display:flex;flex-direction:column;align-items:center;gap:14px;
  font-family:var(--sans-en);font-size:10px;letter-spacing:.4em;color:var(--muted);
  text-transform:uppercase;
}
.hero__scroll-line{
  width:1px;height:60px;background:linear-gradient(180deg,var(--gold),transparent);
  position:relative;overflow:hidden;
}
.hero__scroll-line::after{
  content:"";position:absolute;left:0;right:0;top:0;height:20px;background:var(--gold);
  animation:scrollLine 2s var(--ease) infinite;
}
@keyframes scrollLine{
  0%{transform:translateY(-100%)}
  100%{transform:translateY(300%)}
}

@media (max-width: 720px){
  .hero{padding:120px 20px 60px}
  .hero__edition,.hero__series{font-size:9px}
  .hero__scroll{display:none}
  .hero__rule,.hero__rule--bottom{display:none}
}

/* ============================================================
   Section base
   ============================================================ */

.section{
  position:relative;
  padding:clamp(80px,12vw,160px) var(--gutter);
  max-width:var(--container);
  margin:0 auto;
}
.section__head{margin-bottom:clamp(48px,6vw,88px);max-width:880px}
.section__head--center{text-align:center;margin-left:auto;margin-right:auto}

.eyebrow{
  display:inline-block;
  font-family:var(--sans-en);font-size:11px;letter-spacing:.4em;color:var(--gold);
  text-transform:uppercase;margin-bottom:24px;
  padding-left:46px;position:relative;
}
.eyebrow::before{
  content:"";position:absolute;left:0;top:50%;width:32px;height:1px;background:var(--gold);
}
.section__head--center .eyebrow{padding-left:0}
.section__head--center .eyebrow::before{display:none}

.display{
  font-family:var(--serif-en);
  font-weight:300;
  font-size:clamp(40px, 6.5vw, 92px);
  line-height:1.05;
  letter-spacing:-.015em;
  margin:0 0 32px;
}
.display em{font-style:italic;color:var(--gold);font-weight:300}

.lede{
  font-family:var(--sans-jp);
  font-weight:300;
  font-size:clamp(14px,1.1vw,16.5px);
  line-height:2;
  color:var(--fg-soft);
  letter-spacing:.04em;
  max-width:680px;
  margin:0;
}
.section__head--center .lede{margin-left:auto;margin-right:auto}

/* Reveal motion */
[data-reveal]{
  opacity:0;
  transform:translateY(40px);
  transition:opacity 1000ms var(--ease-out), transform 1000ms var(--ease-out);
}
[data-reveal].is-in{opacity:1;transform:none}
.hero[data-reveal]{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
  .hero__title .word{transform:none !important}
}

/* ============================================================
   CONCEPT
   ============================================================ */

.concept__grid{
  display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(40px,5vw,80px);align-items:start;
}
.concept__visual{
  position:relative;margin:0;
  border:1px solid var(--line);
  border-radius:2px;overflow:hidden;
  aspect-ratio:4/3;
  background:#000;
}
.concept__video,
.concept__photo{
  width:100%;height:100%;object-fit:cover;
  filter:contrast(1.05) saturate(.95);
  transition:transform 2400ms var(--ease-out);
}
.is-in .concept__photo{transform:scale(1.03)}
.concept__caption{
  position:absolute;left:20px;bottom:20px;right:20px;
  display:flex;gap:16px;align-items:baseline;
  font-family:var(--sans-en);font-size:11px;letter-spacing:.25em;text-transform:uppercase;
  color:var(--fg);
}
.cap__num{
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  color:var(--gold);letter-spacing:.1em;
}
.cap__txt{font-family:var(--sans-jp);letter-spacing:.15em;font-size:10.5px;color:var(--fg-soft);text-transform:none}

.concept__copy{padding:8px 0}
.serif-lede{
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  font-size:clamp(22px,2.4vw,32px);line-height:1.5;color:var(--fg);
  margin:0 0 40px;
  padding-left:24px;
  border-left:1px solid var(--gold);
}
.serif-lede em{font-style:normal;color:var(--gold);font-family:var(--serif-en);font-size:1.4em;line-height:0}

.concept__list{
  list-style:none;padding:0;margin:0;
  display:flex;flex-direction:column;gap:18px;
}
.concept__list li{
  padding:18px 0 18px 32px;
  border-top:1px solid var(--line);
  position:relative;
  font-size:14.5px;line-height:1.75;color:var(--fg-soft);letter-spacing:.04em;
}
.concept__list li:last-child{border-bottom:1px solid var(--line)}
.concept__list li::before{
  content:counter(li,decimal-leading-zero);counter-increment:li;
  position:absolute;left:0;top:18px;
  font-family:var(--serif-en);font-style:italic;color:var(--gold);font-size:14px;
}
.concept__list{counter-reset:li}
.concept__list b{color:var(--fg);font-weight:500}

@media (max-width:880px){
  .concept__grid{grid-template-columns:1fr;gap:40px}
}

/* ============================================================
   TECHNOLOGY
   ============================================================ */

.technology{position:relative}
.technology::before{
  content:"MFI";
  position:absolute;top:160px;right:-60px;
  font-family:var(--serif-en);font-style:italic;font-weight:300;
  font-size:clamp(180px,28vw,420px);line-height:.85;color:var(--gold);
  opacity:.05;letter-spacing:-.05em;pointer-events:none;
  z-index:0;
}

.tech__pillars{
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2vw,40px);
  margin-bottom:120px;
  position:relative;z-index:1;
}
.pillar{
  border-top:1px solid var(--gold);
  padding:32px 0 0;
  position:relative;
}
.pillar::before{
  content:"";position:absolute;left:0;top:-1px;width:36px;height:3px;background:var(--gold);
  transform-origin:left;transform:scaleX(0);
  transition:transform 600ms var(--ease);
}
.is-in .pillar::before{transform:scaleX(1)}
.is-in .pillar:nth-child(2)::before{transition-delay:150ms}
.is-in .pillar:nth-child(3)::before{transition-delay:300ms}

.pillar__num{
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  font-size:22px;color:var(--gold);margin-bottom:14px;letter-spacing:.04em;
}
.pillar h3{
  font-family:var(--serif-jp);font-weight:500;font-size:22px;line-height:1.5;letter-spacing:.05em;
  margin:0 0 14px;color:var(--fg);
}
.pillar p{
  margin:0;color:var(--muted);font-size:13.5px;line-height:1.95;letter-spacing:.04em;
}

/* tech demo (thermal visualization) */
.tech__demo{
  display:grid;grid-template-columns:1fr 1.3fr;gap:clamp(40px,5vw,80px);
  align-items:center;
  margin-bottom:88px;
  position:relative;z-index:1;
}
.tech__demo .eyebrow{padding-left:0;margin-bottom:20px}
.tech__demo .eyebrow::before{display:none}
.tech__demo-copy h3{
  font-family:var(--serif-jp);font-weight:500;
  font-size:clamp(28px,3.5vw,44px);
  letter-spacing:.05em;line-height:1.3;
  margin:0 0 24px;color:var(--fg);
}
.tech__demo-copy p{
  font-size:14.5px;line-height:1.95;color:var(--muted);letter-spacing:.04em;
  margin:0 0 32px;
}
.tech__demo-list{
  list-style:none;padding:0;margin:0;
  display:flex;flex-direction:column;gap:14px;
}
.tech__demo-list li{
  display:flex;align-items:baseline;gap:14px;
  padding:14px 0;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--fg-soft);letter-spacing:.04em;
}
.tech__demo-list li:last-child{border-bottom:1px solid var(--line)}
.tech__demo-list b{
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  color:var(--gold);font-size:13px;letter-spacing:.1em;
  flex:0 0 56px;
}
.tech__demo-visual{
  margin:0;position:relative;
  border:1px solid var(--line);overflow:hidden;
  aspect-ratio:16/10;background:#000;
}
.tech__demo-visual::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, transparent 60%, rgba(10,10,11,.7));
  pointer-events:none;z-index:1;
}
.tech__video{
  width:100%;height:100%;object-fit:cover;
  filter:contrast(1.05) saturate(.9);
}
.tech__demo-visual figcaption{
  position:absolute;left:18px;bottom:14px;right:18px;z-index:2;
  display:flex;gap:14px;align-items:baseline;
  font-family:var(--sans-en);font-size:10px;letter-spacing:.3em;
  text-transform:uppercase;color:var(--fg);
}
.tech__demo-visual figcaption .cap__num{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--gold);font-family:var(--sans-en);font-style:normal;
  font-weight:500;font-size:10px;letter-spacing:.25em;
}
.tech__demo-visual figcaption .cap__num::before{
  content:"";width:7px;height:7px;border-radius:50%;background:#E04C4C;
  box-shadow:0 0 8px rgba(224,76,76,.7);
  animation:recBlink 1.5s ease-in-out infinite;
}
@keyframes recBlink{
  0%,100%{opacity:1}
  50%{opacity:.3}
}
.tech__demo-visual figcaption .cap__txt{
  font-family:var(--serif-en);font-style:italic;color:var(--fg-soft);
  letter-spacing:.05em;font-size:11px;text-transform:none;
}

@media (max-width: 880px){
  .tech__demo{grid-template-columns:1fr;gap:32px}
}

.tech__effects{
  border:1px solid var(--line);border-radius:2px;
  padding:48px clamp(24px,4vw,56px);
  background:linear-gradient(180deg, rgba(201,169,97,.04), transparent);
  position:relative;z-index:1;
}
.tech__effects-title{
  text-align:center;margin:0 0 36px;
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  font-size:14px;letter-spacing:.4em;color:var(--gold);text-transform:uppercase;
}
.tech__effects-title span{position:relative;padding:0 24px}
.tech__effects-title span::before,.tech__effects-title span::after{
  content:"";position:absolute;top:50%;width:40px;height:1px;background:var(--gold);opacity:.4;
}
.tech__effects-title span::before{right:100%}
.tech__effects-title span::after{left:100%}

.effects{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.effect{
  display:flex;flex-direction:column;align-items:center;gap:18px;
  padding:24px 12px;
  border-left:1px solid var(--line);
  position:relative;
}
.effect:first-child{border-left:none}
.effect svg{
  width:54px;height:54px;color:var(--gold);
  transition:transform 600ms var(--ease);
}
.effect:hover svg{transform:rotate(12deg) scale(1.08)}
.effect b{
  font-family:var(--serif-jp);font-weight:500;font-size:14.5px;letter-spacing:.15em;color:var(--fg);
  text-align:center;
}

@media (max-width: 880px){
  .tech__pillars{grid-template-columns:1fr;gap:32px}
  .effects{grid-template-columns:repeat(2,1fr)}
  .effect{border-left:none;border-top:1px solid var(--line);padding-top:24px}
  .effect:first-child,.effect:nth-child(2){border-top:none}
}

/* ============================================================
   MECHANISM
   ============================================================ */

.mechanism{position:relative;overflow:hidden}
.mechanism__bg{
  position:absolute;right:-200px;top:80px;width:700px;height:1000px;z-index:0;opacity:.07;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 280' fill='none' stroke='%23C9A961' stroke-width='.5'><path d='M40 20h120M40 260h120M60 20c0 60 40 80 40 120s-40 60-40 120M140 20c0 60-40 80-40 120s40 60 40 120'/><path d='M70 70c10 0 20 5 30 5s20-5 30-5'/></svg>") center/contain no-repeat;
  pointer-events:none;
}

.timeline{
  list-style:none;padding:0;margin:0 0 64px;
  display:flex;flex-direction:column;gap:0;
  position:relative;z-index:1;
}
.t-step{
  display:grid;grid-template-columns:120px 1fr;gap:48px;align-items:start;
  padding:36px 0;
  border-top:1px solid var(--line);
  position:relative;
  transition:background 400ms var(--ease);
}
.t-step:last-child{border-bottom:1px solid var(--line)}
.t-step::after{
  content:"";position:absolute;left:0;top:-1px;width:0;height:1px;background:var(--gold);
  transition:width 800ms var(--ease);
}
.is-in .t-step::after{width:100%}
.is-in .t-step:nth-child(2)::after{transition-delay:120ms}
.is-in .t-step:nth-child(3)::after{transition-delay:240ms}
.is-in .t-step:nth-child(4)::after{transition-delay:360ms}
.is-in .t-step:nth-child(5)::after{transition-delay:480ms}
.is-in .t-step:nth-child(6)::after{transition-delay:600ms}

.t-num{
  font-family:var(--serif-en);font-style:italic;font-weight:300;
  font-size:60px;line-height:1;color:var(--gold);letter-spacing:-.02em;
}
.t-num span{display:inline-block;border-bottom:1px solid var(--gold);padding-bottom:6px}
.t-body h4{
  font-family:var(--serif-jp);font-weight:500;font-size:clamp(22px,2.4vw,30px);
  line-height:1.4;letter-spacing:.04em;margin:0 0 12px;color:var(--fg);
}
.t-body p{
  margin:0;color:var(--muted);font-size:14.5px;line-height:1.95;letter-spacing:.04em;max-width:640px;
}

.t-step:hover{background:linear-gradient(90deg, rgba(201,169,97,.04), transparent 60%)}
.t-step:hover .t-num{color:var(--fg)}

.mechanism__note{
  display:flex;align-items:center;gap:20px;
  padding:28px 32px;border:1px solid var(--gold-mist);border-radius:2px;
  background:rgba(201,169,97,.05);
  font-family:var(--serif-jp);font-weight:400;
  font-size:15px;letter-spacing:.1em;color:var(--fg-soft);line-height:1.8;
  position:relative;z-index:1;
}
.note__bar{flex:0 0 4px;height:36px;background:var(--gold)}

@media (max-width:720px){
  .t-step{grid-template-columns:1fr;gap:14px;padding:28px 0}
  .t-num{font-size:36px}
}

/* ============================================================
   PRODUCT
   ============================================================ */

.product__hero{
  position:relative;margin:0 0 80px;
  border:1px solid var(--line);overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(180deg,#1a1a1d,#0a0a0b);
}
.product__hero img{
  width:100%;height:100%;object-fit:cover;object-position:center;
  filter:contrast(1.05);
  transition:transform 2400ms var(--ease-out);
}
.is-in .product__hero img{transform:scale(1.02)}
.product__hero-frame{
  position:absolute;inset:18px;border:1px solid var(--gold-mist);pointer-events:none;
}

.product__cards{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,2vw,32px);
  margin-bottom:88px;
}
.product__cards--three{
  grid-template-columns:1fr 1.15fr 1fr;
  align-items:stretch;
}
.prodcard{
  border:1px solid var(--line);
  background:linear-gradient(180deg, var(--bg-soft), var(--bg));
  padding:48px clamp(28px,3vw,48px);
  position:relative;overflow:hidden;
  transition:border-color 400ms var(--ease), transform 600ms var(--ease);
}
.prodcard::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(400px 200px at 80% 0%, var(--gold-mist), transparent 60%);
  opacity:0;transition:opacity 600ms var(--ease);
  pointer-events:none;
}
.prodcard:hover{border-color:var(--gold);transform:translateY(-4px)}
.prodcard:hover::after{opacity:1}
.prodcard--featured{border-color:var(--gold-mist)}
.prodcard--featured::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}

.prodcard--hero{
  border-color:var(--gold);
  background:
    radial-gradient(600px 300px at 80% 0%, rgba(201,169,97,.10), transparent 60%),
    linear-gradient(180deg, #15130E, var(--bg));
  transform:translateY(0);
}
.prodcard--hero::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.prodcard--hero h3{color:var(--fg)}
.prodcard__ribbon{
  position:absolute;top:18px;right:18px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 10px;
  background:var(--gold);color:var(--bg);
  font-family:var(--sans-en);font-weight:600;font-size:9.5px;
  letter-spacing:.3em;text-transform:uppercase;
  border-radius:2px;
}
.prodcard__ribbon::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--bg);
}
.prodcard__saving{
  display:flex;flex-direction:column;gap:4px;
  padding:14px 16px;margin:-12px 0 28px;
  border:1px dashed var(--gold-mist);border-radius:2px;
  background:rgba(201,169,97,.04);
}
.prodcard__saving span{
  font-family:var(--sans-jp);font-size:11px;color:var(--muted);letter-spacing:.05em;
}
.prodcard__saving b{
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  font-size:18px;color:var(--gold);letter-spacing:.05em;
}

.prodcard header{
  display:flex;flex-direction:column;gap:18px;margin-bottom:32px;
  padding-bottom:24px;border-bottom:1px solid var(--line);
}
.prod__tag{
  display:inline-block;align-self:flex-start;
  font-family:var(--sans-en);font-size:10px;font-weight:500;
  letter-spacing:.4em;text-transform:uppercase;
  padding:6px 12px;
  border:1px solid var(--line-strong);border-radius:2px;
  color:var(--muted);
}
.prod__tag--gold{border-color:var(--gold);color:var(--gold);background:rgba(201,169,97,.05)}

.prodcard h3{
  margin:0;
  font-family:var(--serif-jp);font-weight:500;font-size:clamp(28px,3vw,36px);
  letter-spacing:.04em;color:var(--fg);
  display:flex;flex-direction:column;gap:8px;
}
.prodcard h3 span{
  font-family:var(--serif-en);font-style:italic;font-weight:300;font-size:.55em;
  color:var(--gold);letter-spacing:.04em;
}
.prodcard p{
  margin:0 0 36px;color:var(--muted);font-size:14px;line-height:1.95;letter-spacing:.04em;
}
.prodcard__price{
  display:flex;align-items:baseline;gap:8px;
  font-family:var(--serif-en);color:var(--fg);
  margin-bottom:36px;
}
.prodcard__cta{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:16px 28px;border-radius:999px;
  border:1px solid var(--line-strong);
  font-family:var(--sans-en);font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--fg);
  transition:background 300ms var(--ease), border-color 300ms var(--ease), color 300ms var(--ease), transform 300ms var(--ease);
  position:relative;z-index:1;
}
.prodcard__cta svg{width:14px;height:14px;transition:transform 300ms var(--ease)}
.prodcard__cta:hover{background:var(--fg);color:var(--bg);border-color:var(--fg);transform:translateY(-2px)}
.prodcard__cta:hover svg{transform:translateX(4px)}
.prodcard__cta--gold{background:var(--gold);border-color:var(--gold);color:var(--bg)}
.prodcard__cta--gold:hover{background:#dabd7a;border-color:#dabd7a;color:var(--bg)}
.yen{font-size:24px;font-weight:300;color:var(--gold)}
.amt{font-size:clamp(40px,5vw,56px);font-weight:300;letter-spacing:-.02em;line-height:1}
.tax{
  font-family:var(--sans-en);font-size:10px;letter-spacing:.3em;color:var(--muted);
  text-transform:uppercase;margin-left:6px;
}

.product__label{
  margin:0;display:grid;grid-template-columns:auto 1fr;gap:48px;align-items:center;
  padding:40px;border:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-soft),var(--bg));
}
.product__label img{
  width:280px;height:auto;border:1px solid var(--line);
  background:#1a1a1d;
}
.product__label figcaption{display:flex;flex-direction:column;gap:10px}
.product__label b{
  font-family:var(--serif-en);font-style:italic;font-weight:400;
  font-size:22px;color:var(--gold);letter-spacing:.04em;
}
.product__label span{
  font-size:14px;color:var(--muted);letter-spacing:.05em;line-height:1.8;
}

@media (max-width:1080px){
  .product__cards--three{grid-template-columns:1fr;gap:20px}
  .product__cards--three .prodcard--hero{order:-1}
}
@media (max-width:880px){
  .product__cards{grid-template-columns:1fr}
  .product__label{grid-template-columns:1fr;gap:24px;padding:24px;text-align:center}
  .product__label img{width:100%;max-width:340px;margin:0 auto}
}

/* ============================================================
   SPEC
   ============================================================ */

.spec__grid{
  display:grid;grid-template-columns:1.4fr 1fr;gap:clamp(40px,5vw,80px);align-items:start;
}
.spec__table{
  width:100%;border-collapse:collapse;font-size:14px;letter-spacing:.04em;
}
.spec__table th,.spec__table td{
  text-align:left;padding:20px 0;border-bottom:1px solid var(--line);
  vertical-align:top;
}
.spec__table th{
  width:34%;font-weight:400;color:var(--muted);
  font-family:var(--sans-en);font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  padding-right:16px;
}
.spec__table td{color:var(--fg-soft);line-height:1.8}
.spec__table td b{color:var(--gold);font-weight:500;font-family:var(--serif-en);font-style:italic;font-size:16px;letter-spacing:.04em}

.care{
  padding:36px;border:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-soft),var(--bg));
}
.care h3{
  margin:0 0 24px;font-family:var(--serif-jp);font-weight:500;font-size:18px;
  letter-spacing:.2em;color:var(--gold);
  display:flex;align-items:center;gap:14px;
}
.care h3::before{content:"";width:24px;height:1px;background:var(--gold)}
.care__icons{
  list-style:none;padding:0;margin:0 0 24px;
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.care__icons li{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--fg-soft);letter-spacing:.05em}
.care__icons .ci{
  flex:0 0 36px;height:36px;border:1px solid var(--line-strong);border-radius:50%;
  display:inline-grid;place-items:center;
  color:var(--gold);font-family:var(--serif-en);font-weight:400;font-size:13px;
  letter-spacing:0;
}
.care__note{
  margin:0;padding-top:20px;border-top:1px solid var(--line);
  font-size:12px;line-height:1.8;color:var(--muted);letter-spacing:.04em;
  font-family:var(--serif-jp);
}

@media (max-width:880px){
  .spec__grid{grid-template-columns:1fr;gap:40px}
  .care__icons{grid-template-columns:1fr}
}

/* ============================================================
   CTA
   ============================================================ */

.cta{
  text-align:center;padding-top:clamp(80px,10vw,140px);padding-bottom:clamp(80px,10vw,140px);
  position:relative;
}
.cta::before{
  content:"";position:absolute;left:50%;top:0;transform:translateX(-50%);
  width:min(90%,var(--container));height:1px;background:var(--line);
}
.cta__inner{max-width:780px;margin:0 auto}
.cta .display{margin-bottom:32px}
.cta .lede{margin-left:auto;margin-right:auto;margin-bottom:48px}
.eyebrow--gold{color:var(--gold)}

.cta__actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:18px 36px;border-radius:999px;
  font-family:var(--sans-en);font-size:12px;letter-spacing:.3em;text-transform:uppercase;
  transition:transform 300ms var(--ease), background 300ms var(--ease), color 300ms var(--ease), border-color 300ms var(--ease);
}
.btn svg{width:14px;height:14px;transition:transform 300ms var(--ease)}
.btn--primary{background:var(--gold);color:var(--bg);border:1px solid var(--gold)}
.btn--primary:hover{background:#dabd7a;border-color:#dabd7a;transform:translateY(-2px)}
.btn--primary:hover svg{transform:translateX(4px)}
.btn--ghost{border:1px solid var(--line-strong);color:var(--fg)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold)}

.cta__note{
  margin:32px 0 0;
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans-en);font-size:11px;letter-spacing:.2em;
  color:var(--muted);text-transform:uppercase;
}
.cta__note-dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 12px var(--gold-mist);
}

/* ============================================================
   FOOTER
   ============================================================ */

.foot{
  border-top:1px solid var(--line);
  background:#070708;
  padding:60px var(--gutter) 40px;
}
.foot__inner{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:auto 1fr auto;gap:48px;align-items:center;
}
.foot__brand{display:flex;align-items:center;gap:16px}
.foot__logo{height:38px;width:auto}
.foot__brand b{
  display:block;font-family:var(--sans-en);font-weight:500;font-size:10.5px;letter-spacing:.3em;color:var(--fg);
}
.foot__brand span{
  display:block;font-family:var(--serif-jp);font-size:10.5px;color:var(--muted);letter-spacing:.2em;margin-top:4px;
}

.foot__nav{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.foot__nav a{
  font-family:var(--sans-en);font-size:10.5px;letter-spacing:.3em;color:var(--muted);
  text-transform:uppercase;transition:color 300ms var(--ease);
}
.foot__nav a:hover{color:var(--gold)}

.foot__legal{
  display:flex;flex-direction:column;gap:6px;text-align:right;
  font-family:var(--sans-en);font-size:10px;letter-spacing:.2em;color:var(--muted);
  text-transform:uppercase;line-height:1.7;
}

@media (max-width:880px){
  .foot__inner{grid-template-columns:1fr;gap:24px;text-align:center}
  .foot__legal{text-align:center}
}

/* ============================================================
   Responsive — tablet & mobile fine-tuning
   ============================================================ */

/* Tablet (~ 980px) */
@media (max-width: 980px){
  :root{ --gutter: clamp(18px, 3.5vw, 36px); }
  .nav__menu{gap:22px}
  .nav__menu a{font-size:10.5px;letter-spacing:.25em}
}

/* Phone */
@media (max-width: 720px){
  :root{ --gutter: 20px; }

  /* Nav: brand + CTA only */
  .nav{padding:14px var(--gutter);grid-template-columns:1fr auto}
  .nav.is-scrolled{padding:10px var(--gutter)}
  .nav__menu{display:none}
  .brand__logo{height:24px}
  .nav__cta{padding:8px 14px;font-size:10px;letter-spacing:.2em;gap:6px}
  .nav__cta svg{width:12px;height:12px}

  /* Hero */
  .hero{padding:110px 20px 70px;min-height:auto}
  .hero__rule,.hero__rule--bottom,.hero__edition,.hero__scroll{display:none}
  .hero__series{font-size:8.5px;letter-spacing:.3em;top:62px}
  .hero__kicker{font-size:9.5px;gap:10px;margin-bottom:20px}
  .hero__kicker .line{flex:0 1 28px}
  .hero__title{font-size:clamp(48px,14vw,72px);line-height:.96;margin-bottom:24px}
  .hero__jp{font-size:13px;letter-spacing:.12em;margin-bottom:36px;line-height:1.9}
  .hero__meta{flex-direction:column;gap:14px;padding-top:22px}
  .hero__meta div{min-width:0}
  .hero__meta b{font-size:15px}
  .hero__meta span{font-size:9.5px;letter-spacing:.22em}

  /* Section */
  .section{padding:64px 20px}
  .section__head{margin-bottom:40px}
  .eyebrow{font-size:10px;letter-spacing:.3em;padding-left:30px;margin-bottom:18px}
  .eyebrow::before{width:22px}
  .display{font-size:clamp(28px,8vw,40px);line-height:1.18;margin-bottom:20px;letter-spacing:0}
  .lede{font-size:13.5px;line-height:1.95;letter-spacing:.02em}

  /* Concept */
  .concept__grid{gap:32px}
  .concept__visual{aspect-ratio:16/10}
  .concept__caption{left:14px;right:14px;bottom:14px;font-size:9.5px;letter-spacing:.18em}
  .cap__txt{font-size:9.5px;letter-spacing:.1em}
  .serif-lede{font-size:18px;padding-left:18px;margin-bottom:28px;line-height:1.55}
  .concept__list li{font-size:13px;padding:14px 0 14px 26px;line-height:1.75}

  /* Technology */
  .technology::before{font-size:120px;right:-30px;top:120px;opacity:.04}
  .tech__pillars{margin-bottom:64px;gap:24px}
  .pillar{padding-top:24px}
  .pillar__num{font-size:18px;margin-bottom:10px}
  .pillar h3{font-size:18px;margin-bottom:10px}
  .pillar p{font-size:13px;line-height:1.85}
  .tech__demo{margin-bottom:56px;gap:28px}
  .tech__demo-copy h3{font-size:24px;line-height:1.4;margin-bottom:16px}
  .tech__demo-copy p{font-size:13px;line-height:1.85;margin-bottom:24px}
  .tech__demo-list b{flex:0 0 48px;font-size:12px}
  .tech__demo-list li{font-size:12.5px;padding:11px 0}
  .tech__demo-visual figcaption{left:12px;right:12px;bottom:10px;font-size:9px}
  .tech__demo-visual figcaption .cap__txt{font-size:10px}
  .tech__effects{padding:32px 18px}
  .tech__effects-title{font-size:12px;letter-spacing:.3em;margin-bottom:24px}
  .tech__effects-title span{padding:0 14px}
  .tech__effects-title span::before,.tech__effects-title span::after{width:22px}
  .effects{gap:18px}
  .effect{padding:18px 6px;gap:14px}
  .effect svg{width:42px;height:42px}
  .effect b{font-size:12.5px;letter-spacing:.1em}

  /* Mechanism */
  .mechanism__bg{display:none}
  .mechanism .display{font-size:clamp(26px,8.5vw,38px)}
  .timeline{margin-bottom:40px}
  .t-step{padding:24px 0;gap:10px}
  .t-num{font-size:30px}
  .t-body h4{font-size:17px;line-height:1.5;margin-bottom:8px;letter-spacing:.02em}
  .t-body p{font-size:12.5px;line-height:1.85}
  .mechanism__note{padding:18px 18px;font-size:13px;line-height:1.7;letter-spacing:.05em;gap:14px}
  .note__bar{flex:0 0 3px;height:auto;align-self:stretch}

  /* Product */
  .product__hero{margin-bottom:48px;aspect-ratio:4/3}
  .product__hero-frame{inset:10px}
  .product__cards{margin-bottom:56px;gap:16px}
  .prodcard{padding:32px 22px}
  .prodcard__ribbon{top:14px;right:14px;font-size:8.5px;padding:5px 8px;letter-spacing:.22em}
  .prodcard header{margin-bottom:24px;padding-bottom:18px;gap:14px}
  .prod__tag{font-size:9.5px;padding:5px 10px;letter-spacing:.3em}
  .prodcard h3{font-size:26px}
  .prodcard h3 span{font-size:14px}
  .prodcard p{font-size:13px;line-height:1.85;margin-bottom:28px}
  .amt{font-size:38px}
  .yen{font-size:20px}
  .tax{font-size:9.5px;letter-spacing:.22em}
  .prodcard__saving{padding:12px 14px;margin:-6px 0 22px}
  .prodcard__saving span{font-size:10.5px}
  .prodcard__saving b{font-size:15px}
  .prodcard__cta{padding:14px 22px;font-size:10.5px;letter-spacing:.22em}
  .product__label{padding:24px;gap:20px;text-align:left}
  .product__label img{width:100%;max-width:none;margin:0}
  .product__label b{font-size:18px}
  .product__label span{font-size:12.5px;line-height:1.7}

  /* Spec */
  .spec__grid{gap:32px}
  .spec__table th,.spec__table td{display:block;padding:10px 0;width:100%}
  .spec__table th{padding-top:18px;border-bottom:none;font-size:10px}
  .spec__table td{padding-bottom:18px;font-size:13.5px;line-height:1.85}
  .spec__table td b{font-size:15px}
  .care{padding:24px}
  .care h3{font-size:15px;letter-spacing:.16em;margin-bottom:18px}
  .care__icons{grid-template-columns:1fr 1fr;gap:14px}
  .care__icons li{font-size:11.5px;gap:10px}
  .care__icons .ci{flex:0 0 32px;height:32px;font-size:12px}
  .care__note{font-size:11.5px;line-height:1.7}

  /* CTA */
  .cta__inner .display{font-size:clamp(26px,8vw,38px)}
  .cta__actions{flex-direction:column;gap:12px;align-items:stretch}
  .btn{justify-content:center;padding:16px 24px;font-size:11px;letter-spacing:.25em}
  .cta__note{margin-top:24px;font-size:10px;letter-spacing:.18em}

  /* Footer */
  .foot{padding:48px 20px 32px}
  .foot__inner{gap:20px}
  .foot__nav{gap:14px}
  .foot__nav a{font-size:9.5px;letter-spacing:.22em}
  .foot__legal{font-size:9px;letter-spacing:.18em}
}

/* Very small phones */
@media (max-width: 380px){
  .hero__title{font-size:46px}
  .display{font-size:26px}
  .prodcard h3{font-size:22px}
  .amt{font-size:34px}
  .care__icons{grid-template-columns:1fr}
}