/* ============ Tokens ============ */
:root {
  --bg: #eceeeb;
  --bg-2: #e3e6e2;
  --ink: #111312;
  --ink-2: #2a2e2c;
  --muted: #565b58;
  --line: rgba(17, 19, 18, .14);
  --line-strong: rgba(17, 19, 18, .28);
  --accent: #cf3d14;
  --accent-ink: #fbf7f4;
  --accent-soft: rgba(207, 61, 20, .1);
  --inverse-bg: #111312;
  --inverse-ink: #eceeeb;
  --inverse-muted: #a3a8a5;

  --f-sans: "Geist", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  --f-cjk: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Geist", system-ui, sans-serif;
  --f-mono: "Geist Mono", ui-monospace, monospace;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --gutter: clamp(1rem, 4vw, 3.5rem);
  --radius: 4px;
  --nav-h: 68px;

  /* z-index scale */
  --z-nav: 50;
  --z-toast: 60;
  --z-grain: 70;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0f0e;
    --bg-2: #151817;
    --ink: #e9ebe7;
    --ink-2: #c9ccc8;
    --muted: #9a9f9b;
    --line: rgba(233, 235, 231, .12);
    --line-strong: rgba(233, 235, 231, .26);
    --accent: #ff5a2c;
    --accent-ink: #120a07;
    --accent-soft: rgba(255, 90, 44, .12);
    --inverse-bg: #e9ebe7;
    --inverse-ink: #0d0f0e;
    --inverse-muted: #4f5451;
  }
}
:root[data-theme="dark"] {
  --bg: #0d0f0e;
  --bg-2: #151817;
  --ink: #e9ebe7;
  --ink-2: #c9ccc8;
  --muted: #9a9f9b;
  --line: rgba(233, 235, 231, .12);
  --line-strong: rgba(233, 235, 231, .26);
  --accent: #ff5a2c;
  --accent-ink: #120a07;
  --accent-soft: rgba(255, 90, 44, .12);
  --inverse-bg: #e9ebe7;
  --inverse-ink: #0d0f0e;
  --inverse-muted: #4f5451;
}

/* ============ Base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: auto; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  transition: background-color .5s var(--ease), color .5s var(--ease);
}
/* film grain, fixed layer only */
body::after {
  content: "";
  position: fixed; inset: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, p, ul, ol { margin: 0; }
p { text-wrap: pretty; }
ul, ol { padding: 0; list-style: none; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.wrap { width: 100%; max-width: 1440px; margin-inline: auto; padding-inline: var(--gutter); }
.nw { white-space: nowrap; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: fixed; left: 1rem; top: -4rem; z-index: 100; padding: .6rem 1rem; background: var(--ink); color: var(--bg); border-radius: var(--radius); }
.skip:focus { top: 1rem; }

.section-title {
  font-family: var(--f-cjk);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 3.25rem);
  line-height: 1.22;
  letter-spacing: -.01em;
  text-wrap: balance;
}

/* ============ Buttons ============ */
.btn {
  --h: 3.25rem;
  position: relative;
  display: inline-flex; align-items: center; gap: .6rem;
  height: var(--h);
  padding: 0 1.4rem 0 1.6rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: .02em;
  white-space: nowrap;
  overflow: hidden;
  isolation: isolate;
  transition: color .45s var(--ease), transform .2s var(--ease);
  will-change: transform;
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  z-index: -1;
  background: var(--accent);
  border-radius: inherit;
  transform: translateY(101%);
  transition: transform .55s var(--ease);
}
.btn:hover::before, .btn:focus-visible::before { transform: translateY(0); }
.btn:hover, .btn:focus-visible { color: var(--accent-ink); }
.btn:active { transform: scale(.97); }
.btn i { font-size: 1.1em; transition: transform .45s var(--ease); }
.btn:hover i.ph-arrow-up-right { transform: translate(2px, -2px); }
.btn:hover i.ph-arrow-down { transform: translateY(3px); }
.btn--sm { --h: 2.6rem; padding: 0 1.05rem 0 1.25rem; font-size: .9375rem; }
.btn--ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-strong); }
.btn--ghost::before { background: var(--ink); }
.btn--ghost:hover, .btn--ghost:focus-visible { color: var(--bg); }

/* ============ Nav ============ */
.nav {
  position: fixed; inset: 0 0 auto 0;
  z-index: var(--z-nav);
  height: var(--nav-h);
  transition: transform .6s var(--ease), background-color .4s var(--ease), box-shadow .4s var(--ease);
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 1px 0 var(--line);
}
.nav.is-hidden { transform: translateY(-100%); }
.nav__inner {
  max-width: 1440px; height: 100%; margin-inline: auto; padding-inline: var(--gutter);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: .7rem; justify-self: start; }
.brand__seal {
  display: block; flex: none;
  width: 2rem; height: 2rem;
  transition: transform .6s var(--ease);
}
.brand:hover .brand__seal { transform: rotate(-8deg); }
.brand__name { font-family: var(--f-cjk); font-weight: 700; font-size: 1.05rem; letter-spacing: .08em; }
.brand__en { font-family: var(--f-mono); font-size: .75rem; color: var(--muted); letter-spacing: .02em; }
.nav__links { display: flex; gap: 2.25rem; font-size: .9375rem; }
.nav__links a, .footer__links a { position: relative; padding: .25rem 0; }
.nav__links a::after, .footer__links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .5s var(--ease);
}
.nav__links a:hover::after, .footer__links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__actions { display: flex; align-items: center; gap: .75rem; justify-self: end; }
.theme-toggle {
  position: relative; width: 2.6rem; height: 2.6rem; border-radius: 999px;
  display: grid; place-items: center;
  box-shadow: inset 0 0 0 1px var(--line);
  transition: box-shadow .3s var(--ease);
}
.theme-toggle:hover { box-shadow: inset 0 0 0 1px var(--line-strong); }
.theme-toggle i { grid-area: 1 / 1; font-size: 1.1rem; transition: transform .6s var(--ease), opacity .4s var(--ease); }
.theme-toggle .ph-moon { opacity: 0; transform: rotate(-90deg) scale(.6); }
:root[data-theme="dark"] .theme-toggle .ph-sun { opacity: 0; transform: rotate(90deg) scale(.6); }
:root[data-theme="dark"] .theme-toggle .ph-moon { opacity: 1; transform: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .ph-sun { opacity: 0; transform: rotate(90deg) scale(.6); }
  :root:not([data-theme="light"]) .theme-toggle .ph-moon { opacity: 1; transform: none; }
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex; align-items: flex-end;
  padding-top: calc(var(--nav-h) + 2rem);
  padding-bottom: clamp(3rem, 9vh, 7rem);
  overflow: hidden;
}
.hero__field {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 62%;
  height: 100%;
}
.hero__inner { position: relative; }
.hero__tags {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin-bottom: clamp(1.5rem, 3vh, 2.25rem);
}
.hero__tags li {
  font-size: .8125rem; letter-spacing: .06em;
  padding: .3rem .8rem;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px var(--line-strong);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.hero__title {
  font-family: var(--f-cjk);
  font-weight: 900;
  font-size: clamp(2.75rem, 7.2vw, 7.25rem);
  line-height: 1.08;
  letter-spacing: -.02em;
}
.hero__title .line { display: block; overflow: hidden; padding-bottom: .06em; margin-bottom: -.06em; }
.hero__title .line__in { display: inline-block; }
.hero__title em {
  font-style: normal;
  color: var(--accent);
}
.hero__lede {
  max-width: 34rem;
  margin-top: clamp(1.25rem, 3vh, 2rem);
  font-size: clamp(1.05rem, 1.35vw, 1.25rem);
  line-height: 1.75;
  color: var(--ink-2);
}
.hero__cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: clamp(1.75rem, 4vh, 2.75rem); }

/* ============ Manifesto ============ */
.manifesto {
  padding-block: clamp(7rem, 18vw, 15rem) clamp(5rem, 12vw, 10rem);
}
.manifesto__text {
  max-width: 22em;
  font-family: var(--f-cjk);
  font-weight: 500;
  font-size: clamp(1.75rem, 3.9vw, 3.6rem);
  line-height: 1.45;
  letter-spacing: .01em;
  text-wrap: pretty;
}
.manifesto__text mark { background: none; color: inherit; }
.manifesto__text mark .ch { color: var(--accent); }
.manifesto__text .ch { display: inline; }

/* ============ Services ============ */
.services {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 6vw, 7rem);
  padding-block: clamp(3rem, 8vw, 6rem) clamp(5rem, 12vw, 10rem);
}
.services__aside {
  position: sticky; top: calc(var(--nav-h) + 2rem);
  align-self: start;
  height: calc(100dvh - var(--nav-h) - 4rem);
  display: flex; flex-direction: column; justify-content: space-between;
}
.services__title {
  font-family: var(--f-cjk);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.4vw, 3.1rem);
  line-height: 1.25;
}
.glyph {
  position: relative;
  display: grid;
  font-family: var(--f-cjk);
  font-weight: 900;
  font-size: clamp(10rem, 24vw, 22rem);
  line-height: .9;
  color: var(--accent);
  user-select: none;
}
.glyph__char {
  grid-area: 1 / 1;
  opacity: 0;
  transform: translateY(12%);
  clip-path: inset(0 0 100% 0);
  transition: opacity .7s var(--ease), transform .9s var(--ease), clip-path .9s var(--ease);
}
.glyph__char.is-active { opacity: 1; transform: none; clip-path: inset(0 0 0 0); }

.services__list { display: flex; flex-direction: column; }
.pillar {
  min-height: 82dvh;
  display: flex; flex-direction: column; justify-content: center;
  padding-block: clamp(3rem, 8vh, 5rem);
  border-top: 1px solid var(--line);
}
.pillar:first-child { border-top: 0; padding-top: 0; min-height: 70dvh; justify-content: flex-start; }
.pillar__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1rem; }
.pillar__char { display: none; }
.pillar__en { font-family: var(--f-mono); font-size: .875rem; color: var(--accent); letter-spacing: .04em; order: 2; }
.pillar__head h3 {
  font-family: var(--f-cjk); font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.15; letter-spacing: .01em;
}
.pillar__lede {
  margin-top: 1.25rem;
  font-size: clamp(1.15rem, 1.6vw, 1.45rem);
  color: var(--ink-2);
  line-height: 1.6;
}
.pillar__items {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.25rem 2.5rem;
  margin-top: clamp(2rem, 5vh, 3.5rem);
}
.pillar__items li { display: flex; flex-direction: column; gap: .5rem; padding-top: 1.1rem; position: relative; }
.pillar__items li::before {
  content: ""; position: absolute; top: 0; left: 0; width: 1.5rem; height: 2px; background: var(--ink);
  transition: width .6s var(--ease), background-color .3s;
}
.pillar__items li:hover::before { width: 3.5rem; background: var(--accent); }
.pillar__items strong { font-weight: 700; font-size: 1.0625rem; font-family: var(--f-cjk); }
.pillar__items span { color: var(--muted); font-size: .96875rem; line-height: 1.7; }

/* ============ Scenes bento ============ */
.scenes { padding-block: clamp(4rem, 10vw, 8rem); }
.bento {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: minmax(13.5rem, auto);
  gap: .75rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}
.tile {
  position: relative;
  display: flex; flex-direction: column; justify-content: space-between; gap: 2rem;
  padding: clamp(1.4rem, 2.2vw, 2rem);
  border-radius: var(--radius);
  background: var(--bg-2);
  overflow: hidden;
  isolation: isolate;
  transition: transform .6s var(--ease);
}
.tile::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), var(--accent-soft), transparent 60%);
  opacity: 0; transition: opacity .4s var(--ease);
}
.tile:hover::after { opacity: 1; }
.tile__q {
  font-family: var(--f-cjk); font-weight: 700;
  font-size: clamp(1.2rem, 1.7vw, 1.55rem); line-height: 1.5;
  text-wrap: pretty;
}
.tile__to {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: .9375rem; color: var(--muted);
  transition: color .3s var(--ease), gap .5s var(--ease);
}
.tile:hover .tile__to { color: var(--accent); gap: .8rem; }
.tile--a {
  grid-column: span 4; grid-row: span 2;
  background: var(--accent); color: var(--accent-ink);
}
.tile--a::after { background: radial-gradient(520px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.16), transparent 60%); }
.tile--a .tile__q { font-size: clamp(2rem, 4.2vw, 3.9rem); line-height: 1.25; font-weight: 900; letter-spacing: -.01em; }
.tile--a .tile__to, .tile--a:hover .tile__to { color: var(--accent-ink); }
.tile--b { grid-column: span 2; background: var(--inverse-bg); color: var(--inverse-ink); }
.tile--b .tile__to { color: var(--inverse-muted); }
.tile--c { grid-column: span 2; }
.tile--d {
  grid-column: span 3;
  background-color: var(--bg-2);
  background-image: radial-gradient(var(--line-strong) 1px, transparent 1.2px);
  background-size: 14px 14px;
}
.tile--e { grid-column: span 3; box-shadow: inset 0 0 0 1px var(--line-strong); background: transparent; }

/* ============ Method ============ */
.method { padding-block: clamp(5rem, 12vw, 10rem); }
.method__lede { margin-top: 1.25rem; max-width: 36rem; color: var(--ink-2); font-size: clamp(1.05rem, 1.3vw, 1.2rem); }
.steps {
  position: relative;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(3.5rem, 7vw, 6rem);
  padding-top: 3rem;
}
.steps::before, .steps::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
}
.steps::before { background: var(--line-strong); }
.steps::after { background: var(--accent); height: 2px; top: -.5px; transform-origin: left; transform: scaleX(var(--progress, 0)); }
.step { position: relative; }
.step::before {
  content: ""; position: absolute; top: calc(-3rem - 5px); left: 0;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); box-shadow: inset 0 0 0 2px var(--line-strong);
  transition: background-color .4s var(--ease), box-shadow .4s var(--ease);
}
.step.is-on::before { background: var(--accent); box-shadow: inset 0 0 0 2px var(--accent); }
.step h3 {
  display: flex; flex-direction: column; gap: .35rem;
  font-family: var(--f-cjk); font-weight: 900;
  font-size: clamp(2.2rem, 3.6vw, 3.4rem); line-height: 1.05;
}
.step h3 span { font-family: var(--f-mono); font-weight: 400; font-size: .8125rem; letter-spacing: .04em; color: var(--muted); }
.step p { margin-top: 1.25rem; color: var(--ink-2); max-width: 22rem; }

/* ============ Industries marquee ============ */
.industries { padding-block: clamp(3rem, 7vw, 5rem); border-block: 1px solid var(--line); overflow: hidden; }
.industries__label { font-size: .875rem; color: var(--muted); margin-bottom: 1.5rem; }
.marquee { display: flex; overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { display: flex; flex: none; animation: marquee 48s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__track span {
  display: inline-flex; align-items: center;
  font-family: var(--f-cjk); font-weight: 700;
  font-size: clamp(2rem, 4.6vw, 4.25rem); line-height: 1.2;
  white-space: nowrap;
  padding-right: clamp(1.5rem, 3vw, 3rem);
}
.marquee__track span::after {
  content: ""; display: inline-block;
  width: .32em; height: .32em; margin-left: clamp(1.5rem, 3vw, 3rem);
  background: var(--accent); border-radius: 1px; transform: rotate(45deg);
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============ FAQ ============ */
.faq {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(2rem, 6vw, 7rem);
  padding-block: clamp(5rem, 12vw, 10rem);
}
.faq__list { border-top: 1px solid var(--line-strong); }
.qa { border-bottom: 1px solid var(--line); }
.qa h3 { font-weight: inherit; }
.qa button {
  width: 100%;
  display: flex; justify-content: space-between; align-items: center; gap: 1.5rem;
  padding: 1.6rem 0;
  text-align: left;
  font-family: var(--f-cjk); font-weight: 500;
  font-size: clamp(1.1rem, 1.6vw, 1.4rem); line-height: 1.5;
  transition: color .3s var(--ease);
}
.qa button:hover { color: var(--accent); }
.qa button i { flex: none; font-size: 1.25rem; transition: transform .6s var(--ease); }
.qa button[aria-expanded="true"] i { transform: rotate(135deg); color: var(--accent); }
.qa__a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .6s var(--ease); }
.qa__a > div { overflow: hidden; }
.qa__a p { padding-bottom: 1.75rem; max-width: 46rem; color: var(--ink-2); }
.qa.is-open .qa__a { grid-template-rows: 1fr; }

/* ============ Founder ============ */
.founder {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2.5rem, 6vw, 7rem);
  align-items: center;
  padding-block: clamp(4rem, 10vw, 8rem) clamp(6rem, 12vw, 10rem);
}
.founder__photo {
  position: relative;
  margin: 0;
  aspect-ratio: 1122 / 1402;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
}
.founder__photo img { width: 100%; height: 100%; object-fit: cover; transform-origin: 50% 30%; }
.founder__photo::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 18%; aspect-ratio: 1; max-width: 5.5rem;
  background: var(--accent);
}
.founder__role { font-size: .9375rem; letter-spacing: .12em; color: var(--accent); font-weight: 500; }
.founder__name {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem 1.25rem;
  margin-top: .9rem;
  font-family: var(--f-cjk); font-weight: 900;
  font-size: clamp(3rem, 6vw, 5.5rem); line-height: 1.05; letter-spacing: .02em;
}
.founder__name span { font-family: var(--f-sans); font-weight: 500; font-size: clamp(1.1rem, 1.6vw, 1.5rem); letter-spacing: -.01em; color: var(--muted); }
.founder__lede {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  font-family: var(--f-cjk); font-weight: 500;
  font-size: clamp(1.25rem, 2vw, 1.75rem); line-height: 1.6;
}
.founder__bio { margin-top: 1.5rem; max-width: 40rem; color: var(--ink-2); display: grid; gap: 1rem; }
.founder__facts {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem; margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding-top: 1.75rem; border-top: 1px solid var(--line-strong);
}
.founder__facts dt { font-family: var(--f-sans); font-weight: 500; font-size: clamp(1.75rem, 2.6vw, 2.4rem); letter-spacing: -.03em; line-height: 1; }
.founder__facts dd { margin: .6rem 0 0; font-size: .9375rem; color: var(--muted); line-height: 1.6; }
.founder__link {
  display: inline-flex; align-items: center; gap: .75rem;
  margin-top: clamp(2rem, 4vw, 2.75rem);
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--line-strong);
  font-weight: 500;
  transition: border-color .4s var(--ease), color .4s var(--ease);
}
.founder__url { font-family: var(--f-mono); font-size: .875rem; color: var(--muted); }
.founder__link i { transition: transform .5s var(--ease); }
.founder__link:hover { color: var(--accent); border-color: var(--accent); }
.founder__link:hover i { transform: translate(2px, -2px); }

/* ============ Contact ============ */
.contact {
  padding-block: clamp(6rem, 14vw, 12rem);
  background: var(--inverse-bg); color: var(--inverse-ink);
  border-radius: clamp(1rem, 2vw, 1.75rem) clamp(1rem, 2vw, 1.75rem) 0 0;
  transition: background-color .5s var(--ease), color .5s var(--ease);
}
.contact__title {
  font-family: var(--f-cjk); font-weight: 700;
  font-size: clamp(1.75rem, 3.4vw, 3rem); line-height: 1.3;
}
.contact__row { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2rem; margin-top: clamp(2.5rem, 6vw, 4.5rem); }
.contact__mail {
  position: relative;
  display: inline-flex; align-items: center; gap: .15em;
  font-family: var(--f-sans); font-weight: 500;
  font-size: clamp(2.75rem, 10.5vw, 10rem);
  line-height: 1; letter-spacing: -.045em;
  padding-bottom: .1em;
}
.contact__mail::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: max(2px, .025em);
  background: var(--accent); transform: scaleX(0); transform-origin: right;
  transition: transform .8s var(--ease);
}
.contact__mail:hover::after, .contact__mail:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.contact__mail i { font-size: .55em; color: var(--accent); transition: transform .6s var(--ease); }
.contact__mail:hover i { transform: translate(.08em, -.08em) rotate(0deg); }
.copy {
  display: inline-flex; align-items: center; gap: .5rem;
  height: 2.75rem; padding: 0 1.2rem; border-radius: 999px;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--inverse-ink) 30%, transparent);
  font-size: .9375rem;
  transition: box-shadow .3s var(--ease), background-color .3s var(--ease);
}
.copy:hover { box-shadow: inset 0 0 0 1px var(--inverse-ink); }
.copy:active { transform: scale(.97); }
.contact__note { margin-top: 2rem; color: var(--inverse-muted); }

/* ============ Footer ============ */
.footer { background: var(--inverse-bg); color: var(--inverse-ink); transition: background-color .5s var(--ease), color .5s var(--ease); }
.footer__inner {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 2rem;
  padding-block: 2.5rem 3rem;
  border-top: 1px solid color-mix(in srgb, var(--inverse-ink) 14%, transparent);
}
.footer__brand { display: flex; align-items: center; gap: .9rem; }
.footer__name { font-family: var(--f-cjk); font-weight: 700; letter-spacing: .06em; }
.footer__en { font-family: var(--f-mono); font-size: .75rem; color: var(--inverse-muted); }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.75rem; font-size: .9375rem; }
.footer__copy { font-size: .8125rem; color: var(--inverse-muted); }

/* ============ Toast ============ */
.toast {
  position: fixed; left: 50%; bottom: 2rem; z-index: var(--z-toast);
  padding: .75rem 1.25rem; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink); font-size: .9375rem;
  transform: translate(-50%, 150%); opacity: 0;
  transition: transform .6s var(--ease), opacity .4s var(--ease);
  pointer-events: none;
}
.toast.is-on { transform: translate(-50%, 0); opacity: 1; }

/* ============ Reveal (JS enhances) ============ */
.js [data-reveal] { opacity: 0; transform: translateY(28px); }

/* ============ Responsive ============ */
@media (max-width: 1100px) {
  .brand__en { display: none; }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile--a { grid-column: span 2; grid-row: span 1; min-height: 20rem; }
  .tile--b, .tile--c, .tile--d, .tile--e { grid-column: span 1; }
  .tile--e { grid-column: span 2; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 3.5rem; }
}

@media (max-width: 860px) {
  :root { --nav-h: 60px; }
  .nav__inner { grid-template-columns: 1fr auto; }
  .nav__links { display: none; }
  .hero { align-items: flex-end; }
  .hero__field { width: 100%; opacity: .55; }
  .hero__title { font-size: clamp(2.6rem, 12vw, 4.5rem); }

  .services { grid-template-columns: 1fr; }
  .services__aside { position: static; height: auto; }
  .glyph { display: none; }
  .pillar, .pillar:first-child { min-height: 0; padding-block: 3rem; }
  .pillar:first-child { border-top: 1px solid var(--line); margin-top: 2rem; }
  .pillar__head { flex-direction: column; align-items: flex-start; }
  .pillar__char {
    display: block;
    font-family: var(--f-cjk); font-weight: 900; font-size: 5.5rem; line-height: 1;
    color: var(--accent); margin-bottom: .75rem;
  }
  .pillar__en { order: 0; }
  .pillar__items { grid-template-columns: 1fr; gap: 1.75rem; }

  .faq { grid-template-columns: 1fr; }
  .founder { grid-template-columns: 1fr; }
  .founder__photo { max-width: 28rem; }
  .footer__inner { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 600px) {
  .btn--sm { display: none; }
  .bento { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .tile, .tile--a, .tile--b, .tile--c, .tile--d, .tile--e { grid-column: auto; grid-row: auto; min-height: 12rem; }
  .tile--a { min-height: 17rem; }
  .steps { grid-template-columns: 1fr; padding-top: 0; padding-left: 2rem; row-gap: 2.75rem; }
  .steps::before, .steps::after { left: 5px; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .steps::after { width: 2px; left: 4.5px; transform-origin: top; transform: scaleY(var(--progress, 0)); }
  .step::before { top: .7rem; left: calc(-2rem); }
  .hero__cta .btn { flex: 1 1 auto; justify-content: center; }
  .contact__mail { font-size: clamp(2.5rem, 13vw, 4rem); }
  .founder__facts { grid-template-columns: 1fr; gap: 1.25rem; }
  .founder__facts div { display: grid; grid-template-columns: 5.5rem 1fr; align-items: baseline; gap: 1rem; }
  .founder__facts dd { margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .marquee__track { animation: none; flex-wrap: wrap; }
  .js [data-reveal] { opacity: 1; transform: none; }
}