/* ======================================================
   成田 渉 — 頸椎手術 ご相談外来 LP
   editorial × medical-luxury
   ====================================================== */

/* ---------- Tokens ---------- */
:root {
  --c-surface: oklch(99% 0.003 250);
  --c-surface-alt: oklch(96.5% 0.005 245);
  --c-paper: oklch(98% 0.006 85);
  --c-ink: oklch(17% 0.02 255);
  --c-ink-soft: oklch(35% 0.025 255);
  --c-ink-mute: oklch(50% 0.02 255);
  --c-brand: oklch(30% 0.06 255);
  --c-brand-dk: oklch(18% 0.05 258);
  --c-accent: oklch(58% 0.09 200);
  --c-accent-dk: oklch(42% 0.09 200);
  --c-gold: oklch(68% 0.08 80);
  --c-line: oklch(88% 0.01 255);
  --c-line-soft: oklch(93% 0.008 255);

  --f-disp: "Shippori Mincho", "Noto Serif JP", serif;
  --f-body: "Noto Sans JP", system-ui, sans-serif;

  --s-container: min(76rem, 100% - 2.5rem);
  --s-section: clamp(5rem, 4rem + 5vw, 10rem);

  --dur: 320ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

/* Respect prefers-reduced-motion: neutralize animations, transitions, smooth scroll */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .hero__scroll span,
  .seal__ring,
  .signature__visual::after,
  .media-cta:hover,
  .media-cta:hover .media-cta__play,
  .media-cta:hover .media-cta__arrow,
  .media-cta:focus-visible .media-cta__arrow {
    transform: none !important;
  }
}

/* Universal focus treatment for links/buttons — gold ring, not default blue */
a:focus-visible,
button:focus-visible,
.media-cta:focus-visible,
.footer__social-link:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: 4px;
}
body {
  margin: 0;
  font-family: var(--f-body);
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.0625rem);
  line-height: 1.9;
  color: var(--c-ink);
  background: var(--c-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3 { margin: 0; font-family: var(--f-disp); font-weight: 700; letter-spacing: 0.02em; line-height: 1.25; }
p, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
img { display: block; max-width: 100%; height: auto; }
em { font-style: normal; color: var(--c-accent-dk); }

/* skip link */
.skip {
  position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip:focus {
  left: 1rem; top: 1rem; width: auto; height: auto; z-index: 999;
  padding: 0.75rem 1.25rem; background: var(--c-brand); color: #fff; border-radius: 4px;
}

.container { width: var(--s-container); margin-inline: auto; }

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--c-ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.25rem;
}
.eyebrow__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-accent);
}

/* ========================================================
   HEADER
   ======================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(99% 0.003 250 / 0.78);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.header.is-scrolled {
  background: oklch(99% 0.003 250 / 0.94);
  border-bottom-color: var(--c-line-soft);
}
.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--c-brand);
}
.brand__mark { color: var(--c-brand); }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-family: var(--f-disp); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.08em; }
.brand__tag { font-size: 0.7rem; color: var(--c-ink-mute); letter-spacing: 0.18em; }

.nav { display: flex; gap: 1.75rem; align-items: center; font-size: 0.85rem; }
.nav a { color: var(--c-ink-soft); }
.nav a:hover { color: var(--c-brand); }
.nav__cta {
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--c-brand);
  border-radius: 999px;
  color: var(--c-brand) !important;
  font-weight: 500;
  letter-spacing: 0.06em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav__cta:hover { background: var(--c-brand); color: #fff !important; }

/* ---------- LANGUAGE SWITCHER ---------- */
.lang {
  display: inline-flex;
  align-items: center;
  margin-left: 1.25rem;
  padding: 0.22rem;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.lang__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.6rem;
  height: 1.7rem;
  padding: 0 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--c-ink-mute, #5b5147);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 500;
  transition: background var(--dur, 200ms) var(--ease, ease), color var(--dur, 200ms) var(--ease, ease);
}
.lang__item:hover {
  color: var(--c-brand, #6b4d2e);
  background: rgba(107, 77, 46, 0.08);
}
.lang__item--active,
.lang__item[aria-current="page"] {
  background: var(--c-brand, #6b4d2e);
  color: #fff;
  pointer-events: none;
}
.lang__item[lang="ja"]  { font-family: var(--f-sans, system-ui, sans-serif); }
.lang__item[lang="en"]  { font-family: var(--f-disp, "Shippori Mincho", serif); letter-spacing: 0.12em; }
.lang__item[lang="zh-Hans"] { font-family: var(--f-sans, system-ui, sans-serif); }

@media (max-width: 860px) {
  .nav a:not(.nav__cta) { display: none; }
  .brand__tag { display: none; }
  .lang { margin-left: 0.5rem; padding: 0.18rem; }
  .lang__item { min-width: 2.1rem; height: 1.55rem; padding: 0 0.45rem; font-size: 0.66rem; }
}

/* ========================================================
   HERO
   ======================================================== */
.hero {
  position: relative;
  padding: clamp(4rem, 3rem + 4vw, 7rem) 0 clamp(5rem, 4rem + 4vw, 8rem);
  background: var(--c-paper);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero__mesh {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px circle at 88% 12%, oklch(84% 0.07 200 / 0.35), transparent 60%),
    radial-gradient(700px circle at 8% 92%, oklch(90% 0.03 260 / 0.5), transparent 55%);
}
.hero__grain { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.6; mix-blend-mode: multiply; }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(2rem, 2rem + 2vw, 4.5rem);
  align-items: center;
}
@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; }
}

.hero__title {
  font-size: clamp(2.5rem, 1.5rem + 4.5vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin: 0.25em 0 1rem;
}
.hero__title em { display: inline-block; color: var(--c-accent-dk); position: relative; }
.hero__title em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.05em;
  height: 0.22em;
  background: linear-gradient(180deg, transparent 55%, oklch(82% 0.09 80 / 0.55) 55%);
  z-index: -1;
}
.hero__lede {
  color: var(--c-ink-soft);
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.125rem);
  line-height: 2;
  max-width: 40ch;
}
.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }

.hero__chips {
  display: flex; flex-wrap: wrap; gap: 1.25rem;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--c-line);
}
.hero__chips li {
  font-size: 0.82rem;
  color: var(--c-ink-soft);
  letter-spacing: 0.04em;
}
.hero__chips strong {
  color: var(--c-brand);
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 0 0.15em;
}

/* seal badge */
.hero__seal { position: relative; justify-self: center; }
.seal {
  position: relative;
  aspect-ratio: 1 / 1;
  width: clamp(18rem, 22vw + 10rem, 30rem);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2.5rem;
  border: 1px solid var(--c-brand);
  border-radius: 50%;
  background: var(--c-surface);
  box-shadow: 0 24px 60px -30px oklch(30% 0.06 255 / 0.3);
}
.seal::before {
  content: "";
  position: absolute; inset: 12px;
  border: 1px dashed oklch(70% 0.03 255 / 0.5);
  border-radius: 50%;
}
.seal__eyebrow {
  position: relative;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--c-ink-mute);
  text-transform: uppercase;
}
.seal__num {
  position: relative;
  font-family: var(--f-disp);
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  line-height: 1;
  margin: 0.25rem 0;
  color: var(--c-brand);
}
.seal__num span { font-size: clamp(4.5rem, 4rem + 4vw, 7rem); font-weight: 800; letter-spacing: -0.02em; }
.seal__num small { font-size: 0.85rem; letter-spacing: 0.1em; color: var(--c-ink-soft); font-family: var(--f-body); }
.seal__caption {
  position: relative;
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--c-brand-dk);
  letter-spacing: 0.1em;
  line-height: 1.5;
}
.seal__ring {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  animation: sealspin 60s linear infinite;
}
.seal__ring text {
  font-family: var(--f-body);
  font-size: 10px;
  fill: var(--c-ink-mute);
  letter-spacing: 0.35em;
}
@keyframes sealspin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.seal__note {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--c-ink-mute);
}

/* scroll cue */
.hero__scroll {
  position: absolute;
  left: 50%; bottom: 2rem;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--c-ink-mute);
}
.hero__scroll span {
  width: 1px; height: 48px;
  background: var(--c-ink-mute);
  position: relative;
  overflow: hidden;
}
.hero__scroll span::after {
  content: "";
  position: absolute; top: -50%; left: 0;
  width: 100%; height: 50%;
  background: var(--c-accent);
  animation: scrollcue 2.2s var(--ease) infinite;
}
@keyframes scrollcue {
  0%   { top: -50%; }
  100% { top: 100%; }
}

/* ========================================================
   BUTTONS
   ======================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn--primary { background: var(--c-brand); color: #fff; box-shadow: 0 18px 40px -20px oklch(30% 0.06 255 / 0.7); }
.btn--primary:hover { background: var(--c-brand-dk); transform: translateY(-2px); box-shadow: 0 22px 48px -20px oklch(20% 0.06 255 / 0.8); }
.btn--ghost { border-color: var(--c-brand); color: var(--c-brand); background: transparent; }
.btn--ghost:hover { background: var(--c-brand); color: #fff; transform: translateY(-2px); }
.btn--lg {
  padding: 1.2rem 1.8rem;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
}
.btn__sub { font-size: 0.68rem; letter-spacing: 0.2em; opacity: 0.85; }
.btn__num { font-family: var(--f-disp); font-size: 1.4rem; letter-spacing: 0.06em; font-weight: 700; }

/* ========================================================
   SECTION HEAD
   ======================================================== */
.shead { margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem); max-width: 42rem; }
.shead__title {
  font-size: clamp(1.9rem, 1.2rem + 2.5vw, 3.25rem);
  line-height: 1.3;
  margin-bottom: 1.25rem;
  color: var(--c-ink);
}
.shead__title em { color: var(--c-accent-dk); }
.shead__lede {
  color: var(--c-ink-soft);
  line-height: 2;
  font-size: 0.98rem;
}
.br-mobile { display: none; }
@media (max-width: 680px) { .br-mobile { display: inline; } }

/* ========================================================
   SYMPTOMS
   ======================================================== */
.symptoms {
  padding: var(--s-section) 0;
  background: var(--c-surface);
}
.sym-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: 2px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  border-radius: 4px;
  overflow: hidden;
}
.sym {
  background: var(--c-surface);
  padding: 2rem 1.75rem 2.25rem;
  position: relative;
  transition: background var(--dur) var(--ease);
}
.sym:hover { background: var(--c-paper); }
.sym__no {
  font-family: var(--f-disp);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--c-accent-dk);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 1rem;
}
.sym h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  color: var(--c-ink);
}
.sym p { color: var(--c-ink-soft); font-size: 0.92rem; line-height: 1.95; }
.sym__note {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--c-ink-mute);
  text-align: center;
}

/* ========================================================
   DOCTOR
   ======================================================== */
.doctor {
  padding: var(--s-section) 0;
  background: var(--c-paper);
  position: relative;
}
.doctor__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 2rem + 2vw, 4.5rem);
  align-items: start;
}
@media (max-width: 900px) { .doctor__grid { grid-template-columns: 1fr; } }

.portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  display: grid;
  overflow: hidden;
  margin: 0;
}
.portrait__frame {
  position: absolute;
  inset: 14px;
  border: 1px solid oklch(70% 0.03 255 / 0.4);
  pointer-events: none;
  z-index: 2;
}
.portrait__img {
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 28%;
  filter: saturate(0.95) contrast(1.02);
  transition: transform 1.2s var(--ease);
}
.portrait:hover .portrait__img { transform: scale(1.02); }
.portrait__cap {
  grid-area: 1 / 1;
  align-self: end;
  justify-self: start;
  z-index: 3;
  padding: 1rem 1.25rem 0.9rem;
  background: linear-gradient(to top, oklch(15% 0.03 255 / 0.85) 0%, oklch(15% 0.03 255 / 0) 100%);
  color: #fff;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  box-sizing: border-box;
}
.portrait__cap-name {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.1em;
}
.portrait__cap-en {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: oklch(92% 0.008 255 / 0.85);
}
.portrait__facts {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}
.portrait__facts > div {
  background: var(--c-surface);
  padding: 0.9rem 1rem;
  font-size: 0.78rem;
}
.portrait__facts dt { color: var(--c-ink-mute); letter-spacing: 0.1em; margin-bottom: 0.25rem; }
.portrait__facts dd { font-family: var(--f-disp); font-weight: 500; color: var(--c-ink); }

.doctor__name {
  display: flex; flex-direction: column; gap: 0.35rem;
  margin-bottom: 0.75rem;
}
.doctor__name-ja {
  font-size: clamp(2.25rem, 1.8rem + 2vw, 3.5rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--c-ink);
}
.doctor__name-en {
  font-family: var(--f-body);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--c-ink-mute);
  text-transform: uppercase;
  font-weight: 500;
}
.doctor__role {
  font-size: 0.95rem;
  color: var(--c-brand);
  font-weight: 500;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--c-line);
}
.doctor__bio {
  color: var(--c-ink-soft);
  line-height: 2;
  margin-bottom: 1.75rem;
}
.doctor__bio strong { color: var(--c-brand); font-weight: 700; }
.doctor__career {
  display: grid; gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--c-ink-soft);
}
.doctor__career li {
  position: relative;
  padding-left: 1.25rem;
}
.doctor__career li::before {
  content: ""; position: absolute; left: 0; top: 0.85em;
  width: 8px; height: 1px; background: var(--c-accent);
}

.quote {
  margin-top: 2.5rem;
  padding: 2rem 2rem 1.75rem;
  background: var(--c-surface);
  border-left: 3px solid var(--c-accent);
  border-radius: 2px;
}
.quote blockquote {
  margin: 0;
  font-family: var(--f-disp);
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--c-ink);
  quotes: "\201C" "\201D";
}
.quote figcaption {
  margin-top: 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--c-ink-mute);
}

/* ========================================================
   METRICS BAND
   ======================================================== */
.metrics {
  padding: clamp(3.5rem, 3rem + 2vw, 6rem) 0 clamp(3rem, 2.5rem + 2vw, 5rem);
  background: var(--c-brand-dk);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.metrics::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(800px circle at 85% 10%, oklch(45% 0.1 200 / 0.25), transparent 60%),
    radial-gradient(600px circle at 10% 90%, oklch(25% 0.08 260 / 0.5), transparent 60%);
  pointer-events: none;
}
.metrics__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  border-top: 1px solid oklch(100% 0 0 / 0.12);
  border-bottom: 1px solid oklch(100% 0 0 / 0.12);
}
@media (max-width: 860px) {
  .metrics__grid { grid-template-columns: repeat(2, 1fr); }
}
.metric {
  padding: clamp(2rem, 1.5rem + 2vw, 3rem) 1rem;
  text-align: center;
  position: relative;
}
.metric + .metric { border-left: 1px solid oklch(100% 0 0 / 0.12); }
@media (max-width: 860px) {
  .metric + .metric { border-left: none; }
  .metric:nth-child(2n) { border-left: 1px solid oklch(100% 0 0 / 0.12); }
  .metric:nth-child(n+3) { border-top: 1px solid oklch(100% 0 0 / 0.12); }
}
.metric__label {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: oklch(80% 0.02 255);
  margin-bottom: 1rem;
}
.metric__val {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  line-height: 1;
  font-family: var(--f-disp);
  color: #fff;
}
.metric__val span {
  font-size: clamp(3rem, 2rem + 3vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.metric__val small {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: oklch(80% 0.02 255);
  font-family: var(--f-body);
}
.metrics__note {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: oklch(80% 0.02 255 / 0.7);
  position: relative;
}
.metrics__note--cite {
  margin: 2.5rem auto 0;
  max-width: 720px;
  text-align: left;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid oklch(90% 0.015 255 / 0.15);
  border-top: 2px solid var(--c-gold);
  background: oklch(100% 0 0 / 0.03);
  font-size: 0.72rem;
  line-height: 1.7;
  color: oklch(88% 0.02 255 / 0.8);
  letter-spacing: 0.02em;
}
.metrics__note--cite dt {
  font-family: var(--f-disp);
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: 0.08em;
  white-space: nowrap;
}
#cite-mainichi,
#cite-own {
  scroll-margin-top: 6rem;
}
.metrics__note--cite dd {
  margin: 0;
}
.metrics__note--cite dd strong {
  color: oklch(96% 0.005 255);
  font-weight: 600;
}
@media (max-width: 620px) {
  .metrics__note--cite {
    grid-template-columns: 1fr;
    gap: 0.2rem 0;
    padding: 1rem 1.1rem;
  }
  .metrics__note--cite dd {
    margin-bottom: 0.6rem;
  }
  .metrics__note--cite dd:last-child {
    margin-bottom: 0;
  }
}

/* Inline citation superscripts (医療広告ガイドライン対応) */
.cite-ref {
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
  margin: 0 0.15em;
  letter-spacing: 0;
  font-weight: 600;
}
.cite-ref a {
  position: relative;
  display: inline-block;
  color: currentColor;
  opacity: 0.75;
  text-decoration: none;
  border-bottom: 1px dotted currentColor;
  padding: 0.15em 0.2em;
  transition: opacity 0.2s;
}
.cite-ref a::before {
  /* expanded 24×24 hit area for touch targets (WCAG AA) */
  content: "";
  position: absolute;
  inset: -0.6em -0.4em;
  min-width: 24px;
  min-height: 24px;
}
.cite-ref a:hover,
.cite-ref a:focus-visible {
  opacity: 1;
}
.cite-ref a:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 2px;
  border-radius: 2px;
}
/* In dark hero context */
.hero__lede .cite-ref a,
.hero__chips .cite-ref a,
.seal__caption .cite-ref a,
.doctor__bio .cite-ref a {
  color: var(--c-gold);
  opacity: 0.9;
}

/* ========================================================
   TECHNIQUE
   ======================================================== */
.tech {
  padding: var(--s-section) 0;
  background: var(--c-surface);
}
.tech__compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: stretch;
  margin-top: 3rem;
}
@media (max-width: 860px) {
  .tech__compare { grid-template-columns: 1fr; }
}
.tech__col {
  padding: 2rem;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: var(--c-paper);
}
.tech__col--opera {
  background: var(--c-brand-dk);
  color: #fff;
  border-color: var(--c-brand-dk);
  box-shadow: 0 30px 80px -40px oklch(30% 0.06 255 / 0.8);
}
.tech__col-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-ink-mute);
  margin-bottom: 1.5rem;
  font-weight: 500;
}
.tech__col--opera .tech__col-eyebrow { color: oklch(85% 0.05 200); }
.tech__col dl {
  display: grid;
  gap: 1rem;
}
.tech__col div {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed oklch(70% 0.02 255 / 0.3);
}
.tech__col div:last-child { border-bottom: none; padding-bottom: 0; }
.tech__col dt {
  font-size: 0.78rem;
  color: var(--c-ink-mute);
  letter-spacing: 0.1em;
  padding-top: 0.15rem;
}
.tech__col--opera dt { color: oklch(85% 0.05 200); }
.tech__col dd { font-size: 1rem; color: inherit; }
.tech__col--opera dd { color: #fff; }
.tech__col--opera dd strong {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}
.tech__vs {
  display: grid;
  place-items: center;
  width: 3.5rem;
  font-family: var(--f-disp);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--c-accent-dk);
  letter-spacing: 0.1em;
  position: relative;
}
.tech__vs::before, .tech__vs::after {
  content: ""; position: absolute; left: 50%; width: 1px; height: calc(50% - 2rem);
  background: var(--c-line);
}
.tech__vs::before { top: 0; }
.tech__vs::after { bottom: 0; }
@media (max-width: 860px) {
  .tech__vs { width: 100%; height: 2rem; }
  .tech__vs::before, .tech__vs::after {
    left: 0; right: 0; width: calc(50% - 2rem); height: 1px; top: 50%;
  }
  .tech__vs::after { left: auto; right: 0; }
}
.tech__note {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--c-ink-mute);
}

/* ========================================================
   REACH (Global Research & Outreach)
   ======================================================== */
.reach {
  padding: var(--s-section) 0;
  background: var(--c-paper);
  position: relative;
  overflow: hidden;
}
.reach::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 85% -10%, oklch(58% 0.09 200 / 0.07), transparent 60%),
    radial-gradient(900px 500px at 5% 110%, oklch(30% 0.06 255 / 0.06), transparent 60%);
  pointer-events: none;
}
.reach > .container { position: relative; z-index: 1; }

.shead--center { text-align: center; max-width: 46rem; margin-inline: auto; }
.shead--center .eyebrow { justify-content: center; }

/* 国リボン */
.reach__countries {
  margin: clamp(2rem, 2rem + 1vw, 3rem) auto clamp(3rem, 3rem + 2vw, 5rem);
  max-width: 60rem;
  text-align: center;
}
.reach__countries-label {
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  margin-bottom: 1.25rem;
}
.reach__flags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.reach__flags li {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 1.1rem;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-ink-soft);
  letter-spacing: 0.04em;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.reach__flags li:hover {
  transform: translateY(-2px);
  border-color: var(--c-brand);
}
.reach__flag { font-size: 1.15rem; line-height: 1; }
.reach__countries-note {
  font-size: 0.78rem;
  color: var(--c-ink-mute);
  line-height: 1.9;
}

/* 2カード（教科書 / 主要登壇） */
.reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 1.5rem + 1vw, 2.5rem);
  align-items: stretch;
  margin-bottom: clamp(3rem, 3rem + 2vw, 5rem);
}
@media (max-width: 900px) {
  .reach__grid { grid-template-columns: 1fr; }
}

.reach__card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  padding: clamp(1.75rem, 1.5rem + 1vw, 2.5rem);
  position: relative;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.reach__card:hover { border-color: var(--c-brand); }
.reach__card-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--c-accent-dk);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-line-soft);
}

/* 教科書カード */
.reach__card--book {
  background:
    linear-gradient(170deg, var(--c-surface) 0%, var(--c-paper) 100%);
  border-color: var(--c-brand);
}
.reach__card--book::after {
  content: "CHAPTER";
  position: absolute;
  top: 1.25rem;
  right: -0.5rem;
  background: var(--c-brand);
  color: #fff;
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  padding: 0.35rem 0.9rem;
  font-family: var(--f-body);
  font-weight: 500;
}
.reach__card-title {
  font-family: var(--f-disp);
  font-size: clamp(1.25rem, 1rem + 0.8vw, 1.6rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-brand-dk);
  margin-bottom: 1.25rem;
}
.reach__card-meta {
  font-size: 0.85rem;
  line-height: 2;
  color: var(--c-ink-soft);
  margin-bottom: 1.5rem;
  padding: 1rem 1.1rem;
  background: oklch(30% 0.06 255 / 0.03);
  border-left: 2px solid var(--c-brand);
}
.reach__card-meta strong { color: var(--c-brand-dk); font-weight: 700; }
.reach__card-body {
  font-size: 0.92rem;
  line-height: 1.95;
  color: var(--c-ink-soft);
}

/* 主要登壇カード */
.reach__talks { display: grid; gap: 1.1rem; }
.reach__talks li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem 0;
  border-top: 1px dashed var(--c-line);
}
.reach__talks li:first-child { border-top: none; padding-top: 0; }
.reach__talks li:last-child { padding-bottom: 0; }
.reach__talk-place {
  font-family: var(--f-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--c-ink-soft);
  padding-top: 0.2rem;
  white-space: nowrap;
}
.reach__talk-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.55;
  margin-bottom: 0.35rem;
}
.reach__talk-meta {
  font-size: 0.78rem;
  color: var(--c-ink-mute);
  line-height: 1.75;
  letter-spacing: 0.04em;
}

/* Badges */
.reach__badges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.reach__badge {
  padding: 1.35rem 1.5rem;
  background: var(--c-surface);
  border-top: 2px solid var(--c-accent);
  border-left: 1px solid var(--c-line-soft);
  border-right: 1px solid var(--c-line-soft);
  border-bottom: 1px solid var(--c-line-soft);
}
.reach__badge-head {
  font-family: var(--f-disp);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--c-brand-dk);
  margin-bottom: 0.6rem;
}
.reach__badge-body {
  font-size: 0.82rem;
  color: var(--c-ink-mute);
  line-height: 1.9;
}

.reach__note {
  text-align: center;
  font-size: 0.78rem;
  color: var(--c-ink-mute);
  max-width: 46rem;
  margin: 0 auto;
  line-height: 1.9;
}

/* ---------- SOCIETY ROLES ---------- */
.roles {
  padding: clamp(4rem, 3rem + 4vw, 8rem) 0;
  background: var(--c-paper, #f6f1e7);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
.roles__grid {
  list-style: none;
  margin: clamp(2rem, 1.5rem + 1.5vw, 3.5rem) auto 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1rem;
  max-width: 70rem;
}
.roles__item {
  position: relative;
  padding: 1.4rem 1.3rem 1.5rem;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  transition: border-color 200ms ease, transform 200ms ease;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.roles__item:hover {
  border-color: var(--c-brand, #6b4d2e);
  transform: translateY(-2px);
}
.roles__item--featured {
  background: linear-gradient(135deg, var(--c-brand-dk, #2a2218) 0%, var(--c-brand, #6b4d2e) 100%);
  color: #fff;
  border-color: transparent;
  grid-column: span 2;
}
.roles__item--featured .roles__org { color: rgba(255,255,255,0.78); }
.roles__year {
  font-family: 'Shippori Mincho', serif;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--c-brand, #6b4d2e);
  text-transform: uppercase;
  margin: 0;
}
.roles__item--featured .roles__year { color: rgba(255,255,255,0.85); }
.roles__title {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--c-ink, #1a1612);
  line-height: 1.55;
  margin: 0;
}
.roles__item--featured .roles__title { color: #fff; font-size: 1.05rem; }
.roles__org {
  font-size: 0.78rem;
  color: var(--c-ink-mute, #5b5147);
  line-height: 1.6;
  margin: 0;
}
.roles__note {
  text-align: center;
  font-size: 0.74rem;
  color: var(--c-ink-mute);
  margin-top: 1.8rem;
}
@media (max-width: 720px) {
  .roles__item--featured { grid-column: span 1; }
  .roles__grid { grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); }
}

/* ---------- REACH: Hero Teaching Figure ---------- */
.reach__hero {
  margin: 0 auto clamp(2.5rem, 2rem + 2vw, 4rem);
  max-width: 62rem;
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: var(--c-brand-dk);
  display: grid;
}
.reach__hero img {
  grid-area: 1 / 1;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
  filter: saturate(0.95);
  transition: transform 1.4s var(--ease);
}
.reach__hero:hover img { transform: scale(1.015); }
.reach__hero-cap {
  grid-area: 1 / 1;
  align-self: end;
  display: grid;
  gap: 0.45rem;
  padding: clamp(1.2rem, 1rem + 1.5vw, 2rem) clamp(1.25rem, 1rem + 1.5vw, 2rem);
  background: linear-gradient(
    to top,
    oklch(14% 0.03 258 / 0.92) 0%,
    oklch(14% 0.03 258 / 0.70) 45%,
    oklch(14% 0.03 258 / 0) 100%
  );
  color: #fff;
  z-index: 2;
}
.reach__hero-tag {
  font-family: var(--f-body);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: oklch(85% 0.05 200);
  font-weight: 500;
}
.reach__hero-title {
  font-family: var(--f-disp);
  font-size: clamp(1.05rem, 0.9rem + 0.7vw, 1.4rem);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.01em;
}
.reach__hero-body {
  font-size: 0.85rem;
  line-height: 1.9;
  color: oklch(92% 0.008 250 / 0.92);
  max-width: 38rem;
}

/* ---------- REACH: Textbook Card with cover ---------- */
.reach__card--book {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: clamp(1rem, 0.8rem + 0.8vw, 1.5rem);
  align-items: start;
}
@media (max-width: 560px) {
  .reach__card--book { grid-template-columns: 1fr; }
}
.reach__book-cover {
  grid-row: span 5;
  aspect-ratio: 600 / 849;
  box-shadow:
    0 1px 0 oklch(20% 0.03 250 / 0.1),
    -8px 12px 28px -14px oklch(20% 0.03 250 / 0.35);
  border: 1px solid oklch(20% 0.03 250 / 0.08);
  background: oklch(96% 0.01 90);
  overflow: hidden;
  position: relative;
  transform: rotate(-1.2deg);
  transition: transform var(--dur) var(--ease);
  margin: 0;
}
.reach__card--book:hover .reach__book-cover { transform: rotate(0deg) translateY(-2px); }
.reach__book-cover svg,
.reach__book-cover img {
  display: block;
  width: 100%; height: 100%;
  object-fit: cover;
}

/* ---------- REACH: Journal badge ---------- */
.reach__badge--journal {
  grid-column: 1 / -1;
  background: var(--c-paper);
}
.reach__journal {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1.25rem;
  align-items: start;
}
.reach__journal img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  box-shadow: -4px 6px 14px -8px oklch(20% 0.03 250 / 0.4);
  border: 1px solid oklch(20% 0.03 250 / 0.08);
}

/* ========================================================
   AWARDS STRIP
   ======================================================== */
.awards {
  margin-top: clamp(3rem, 2.5rem + 2vw, 5rem);
  padding-top: clamp(2.5rem, 2rem + 2vw, 4rem);
  border-top: 1px solid var(--c-line);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 1rem + 1vw, 2rem);
  align-items: stretch;
}
@media (max-width: 900px) {
  .awards { grid-template-columns: 1fr; }
}
.awards__head {
  align-self: center;
  padding-right: clamp(0rem, 0rem + 1vw, 1rem);
}
.awards__head .eyebrow {
  color: var(--c-gold);
}
.awards__title {
  font-family: var(--f-disp);
  font-size: clamp(1.3rem, 1rem + 1vw, 1.85rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-brand-dk);
  margin: 0.5rem 0 1rem;
  letter-spacing: 0.01em;
}
.awards__title em {
  color: var(--c-gold);
  font-family: var(--f-disp);
  font-weight: 800;
}
.awards__lede {
  font-size: 0.88rem;
  color: var(--c-ink-soft);
  line-height: 2;
}
.awards__fig {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: var(--c-surface);
  aspect-ratio: 4 / 3;
  display: grid;
}
.awards__fig img {
  grid-area: 1 / 1;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.02);
  transition: transform 1.2s var(--ease);
}
.awards__fig:hover img { transform: scale(1.02); }
.awards__fig figcaption {
  grid-area: 1 / 1;
  align-self: end;
  padding: 0.7rem 0.9rem 0.6rem;
  font-family: var(--f-body);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: #fff;
  background: linear-gradient(to top, oklch(15% 0.03 255 / 0.82), oklch(15% 0.03 255 / 0));
  z-index: 2;
}
.awards__fig--1 { object-position: 50% 50%; }
.awards__fig--1 img { object-position: 50% 35%; }
.awards__fig--2 img { object-position: 50% 45%; }

/* ========================================================
   SIGNATURE DEVICE — Diamond Drill
   ======================================================== */
.signature {
  padding: var(--s-section) 0;
  background: var(--c-brand-dk);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.signature::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(1000px 500px at 90% 20%, oklch(58% 0.15 220 / 0.22), transparent 60%),
    radial-gradient(700px 400px at 10% 85%, oklch(68% 0.08 80 / 0.12), transparent 60%);
  pointer-events: none;
}
.signature > .container { position: relative; z-index: 1; }
.signature__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 2rem + 2vw, 4.5rem);
  align-items: center;
}
@media (max-width: 900px) {
  .signature__grid { grid-template-columns: 1fr; }
}
.signature__body .eyebrow {
  color: var(--c-gold);
}
.signature__title {
  font-family: var(--f-disp);
  font-size: clamp(2rem, 1.6rem + 1.6vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  margin: 0.8rem 0 1.25rem;
  letter-spacing: 0.01em;
}
.signature__title em {
  color: var(--c-gold);
  font-family: var(--f-disp);
  font-weight: 800;
  display: inline-block;
  position: relative;
}
.signature__title em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -0.15rem;
  height: 1px;
  background: oklch(68% 0.08 80 / 0.5);
}
.signature__lede {
  font-size: 1rem;
  line-height: 2;
  color: oklch(92% 0.008 250 / 0.9);
  margin-bottom: 1.5rem;
}
.signature__facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: oklch(100% 0 0 / 0.12);
  border: 1px solid oklch(100% 0 0 / 0.12);
  margin-bottom: 1.5rem;
}
.signature__facts > div {
  background: var(--c-brand-dk);
  padding: 0.9rem 1rem;
}
.signature__facts dt {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: oklch(85% 0.05 200);
  margin-bottom: 0.3rem;
}
.signature__facts dd {
  font-family: var(--f-disp);
  font-size: 1.05rem;
  color: #fff;
  font-weight: 500;
  line-height: 1.35;
}
.signature__facts dd small {
  display: block;
  font-family: var(--f-body);
  font-size: 0.7rem;
  font-weight: 400;
  color: oklch(80% 0.03 80);
  letter-spacing: 0.08em;
  margin-top: 0.15rem;
}
.signature__quote {
  margin: 2rem 0 0;
  padding: 1.8rem 0 0;
  border-top: 1px solid oklch(100% 0 0 / 0.15);
  font-family: var(--f-disp);
  font-size: clamp(1.45rem, 1.1rem + 1.6vw, 2.4rem);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: oklch(98% 0.008 250);
  font-style: normal;
  position: relative;
}
.signature__quote blockquote {
  margin: 0;
  padding: 0 0 0 0.2em;
  position: relative;
  text-indent: -0.42em;
}
.signature__quote blockquote::first-letter {
  color: var(--c-gold);
}
.signature__quote::before {
  content: "\201C";
  position: absolute;
  top: 0.4rem;
  left: -0.05em;
  font-size: clamp(4rem, 3rem + 4vw, 7rem);
  line-height: 0.8;
  color: var(--c-gold);
  opacity: 0.35;
  font-family: var(--f-disp);
  pointer-events: none;
  z-index: 0;
}
.signature__quote::after { content: none; }
.signature__quote cite {
  display: block;
  margin-top: 1.2rem;
  font-style: normal;
  font-family: var(--f-body);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: oklch(82% 0.03 200 / 0.85);
}
.signature__quote cite::before {
  content: "";
  display: inline-block;
  width: 2rem;
  height: 1px;
  background: var(--c-gold);
  vertical-align: middle;
  margin-right: 0.8rem;
}

/* Tool visualization */
.signature__visual {
  position: relative;
  aspect-ratio: 3 / 5;
  border: 1px solid oklch(100% 0 0 / 0.12);
  background:
    radial-gradient(ellipse at 60% 40%, oklch(24% 0.05 260) 0%, oklch(14% 0.03 258) 70%);
  display: grid;
  place-items: center;
  padding: 2rem 1.5rem 3rem;
  overflow: hidden;
}
.signature__visual svg {
  width: 72%;
  height: auto;
  filter: drop-shadow(0 20px 30px oklch(0% 0 0 / 0.35));
}
.signature__visual img {
  width: auto;
  height: auto;
  max-width: 42%;
  max-height: min(86%, 720px);
  justify-self: center;
  align-self: center;
  object-fit: contain;
  object-position: center;
  display: block;
  position: relative;
  z-index: 0;
  filter:
    drop-shadow(0 24px 40px oklch(0% 0 0 / 0.45))
    brightness(1.02);
}
.signature__visual::before {
  /* subtle gradient scrim so the caption is readable over a real photograph */
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 55% 35%, transparent 35%, oklch(10% 0.02 258 / 0.35) 80%),
    linear-gradient(180deg, transparent 55%, oklch(10% 0.02 258 / 0.7) 100%);
  pointer-events: none;
  z-index: 1;
}
.signature__visual::after {
  content: "DIAMOND-TIP CUSTOM DRILL ／ 3.2mm ／ NIHON MEDICAL ORDER (NIIGATA)";
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem; right: 1.25rem;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: oklch(85% 0.05 200 / 0.85);
  text-align: center;
  z-index: 2;
  pointer-events: none;
}

/* ========================================================
   FLOW / TIMELINE
   ======================================================== */
.flow { padding: var(--s-section) 0; background: var(--c-surface); }
.timeline {
  position: relative;
  max-width: 56rem;
  margin: 0 auto;
  padding-left: clamp(3rem, 2rem + 2vw, 5rem);
}
.timeline::before {
  content: "";
  position: absolute; left: clamp(1.5rem, 1rem + 1vw, 2.5rem);
  top: 0.5rem; bottom: 0.5rem; width: 1px;
  background: var(--c-line);
}
.tl {
  position: relative;
  padding: 0.25rem 0 2.5rem;
}
.tl:last-child { padding-bottom: 0; }
.tl__no {
  position: absolute;
  left: calc(-1 * clamp(3rem, 2rem + 2vw, 5rem));
  top: 0;
  width: clamp(3rem, 2rem + 2vw, 5rem);
  text-align: center;
  font-family: var(--f-disp);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--c-brand);
  background: var(--c-surface);
  padding: 0.25rem 0;
}
.tl__no::before {
  content: "";
  position: absolute;
  left: 50%; top: 0.35rem;
  transform: translateX(-50%);
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px var(--c-surface);
}
.tl__body { padding-top: 0.5rem; }
.tl__body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  color: var(--c-ink);
}
.tl__body p { color: var(--c-ink-soft); font-size: 0.92rem; line-height: 2; }
.tl__body p strong { color: var(--c-brand); font-weight: 700; }
.tl__table {
  margin-top: 1rem;
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: 2px;
}
.tl__table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.tl__table th, .tl__table td {
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--c-line-soft);
}
.tl__table tr:last-child th, .tl__table tr:last-child td { border-bottom: none; }
.tl__table th {
  font-weight: 500;
  color: var(--c-ink-soft);
  background: var(--c-surface-alt);
  width: 45%;
}
.tl__table td { color: var(--c-ink); font-weight: 500; }

/* ========================================================
   VOICES
   ======================================================== */
.voices { padding: var(--s-section) 0; background: var(--c-paper); }
.voice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1.5rem;
}
.voice {
  background: var(--c-surface);
  padding: 2.25rem 2rem 2rem;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  position: relative;
}
.voice__quote {
  font-family: var(--f-disp);
  font-size: 1rem;
  line-height: 2;
  color: var(--c-ink);
  margin-bottom: 1.5rem;
}
.voice__quote span {
  color: var(--c-accent);
  font-size: 1.5rem;
  padding: 0 0.15em;
}
.voice__meta {
  padding-top: 1.25rem;
  border-top: 1px solid var(--c-line-soft);
  font-size: 0.78rem;
  color: var(--c-ink-mute);
  letter-spacing: 0.12em;
}
.voices__note {
  margin-top: 2rem;
  font-size: 0.78rem;
  color: var(--c-ink-mute);
  text-align: center;
  line-height: 1.9;
}

/* ========================================================
   FAQ
   ======================================================== */
.faq { padding: var(--s-section) 0; background: var(--c-surface); }
.faq__list {
  border-top: 1px solid var(--c-line);
  max-width: 56rem;
  margin: 0 auto;
}
.q {
  border-bottom: 1px solid var(--c-line);
  padding: 0;
}
.q summary {
  list-style: none;
  cursor: pointer;
  padding: 1.5rem 2.5rem 1.5rem 0.5rem;
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--c-ink);
  position: relative;
  transition: color var(--dur) var(--ease);
}
.q summary::-webkit-details-marker { display: none; }
.q summary::after {
  content: "";
  position: absolute; right: 0.5rem; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  background:
    linear-gradient(var(--c-brand), var(--c-brand)) 50% 50% / 100% 1px no-repeat,
    linear-gradient(var(--c-brand), var(--c-brand)) 50% 50% / 1px 100% no-repeat;
  transition: transform var(--dur) var(--ease);
}
.q[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.q summary:hover { color: var(--c-brand); }
.q__body {
  padding: 0 3rem 1.75rem 0.5rem;
  color: var(--c-ink-soft);
  font-size: 0.93rem;
  line-height: 2;
}
.q__body strong { color: var(--c-brand); font-weight: 700; }

/* ========================================================
   CTA
   ======================================================== */
.cta {
  padding: var(--s-section) 0;
  background: var(--c-brand-dk);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(700px circle at 85% 20%, oklch(45% 0.1 200 / 0.3), transparent 60%),
    radial-gradient(500px circle at 10% 90%, oklch(25% 0.08 260 / 0.4), transparent 60%);
  pointer-events: none;
}
.cta__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 2rem + 2vw, 4rem);
  align-items: start;
  position: relative;
}
@media (max-width: 900px) { .cta__grid { grid-template-columns: 1fr; } }

.cta__title {
  font-size: clamp(1.9rem, 1.4rem + 2vw, 3rem);
  line-height: 1.35;
  margin-bottom: 1.25rem;
  color: #fff;
}
.cta__title em {
  color: oklch(85% 0.08 80);
  font-style: normal;
}
.cta .eyebrow { color: oklch(85% 0.03 200); }
.cta .eyebrow__dot { background: oklch(85% 0.08 80); }

.cta__lede {
  color: oklch(85% 0.02 255);
  line-height: 2;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}
.cta__btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.cta__btns .btn--primary { background: #fff; color: var(--c-brand-dk); }
.cta__btns .btn--primary:hover { background: oklch(95% 0.02 80); color: var(--c-brand-dk); }
.cta__btns .btn--ghost { border-color: oklch(80% 0.04 255 / 0.5); color: #fff; }
.cta__btns .btn--ghost:hover { background: oklch(100% 0 0 / 0.08); border-color: #fff; }

.cta__fine {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: oklch(80% 0.02 255 / 0.7);
}

.cta__info {
  background: oklch(100% 0 0 / 0.04);
  border: 1px solid oklch(100% 0 0 / 0.12);
  padding: 2rem;
  border-radius: 4px;
}
.cta__info-title {
  font-family: var(--f-disp);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: 0.08em;
  padding-bottom: 1rem;
  border-bottom: 1px solid oklch(100% 0 0 / 0.12);
}
.cta__meta { display: grid; gap: 1.25rem; }
.cta__meta > div { display: grid; grid-template-columns: 6rem 1fr; gap: 1rem; align-items: start; }
.cta__meta dt {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: oklch(80% 0.02 255);
  padding-top: 0.15rem;
}
.cta__meta dd {
  font-size: 0.9rem;
  color: #fff;
  line-height: 1.7;
}
.cta__meta dd a { color: oklch(85% 0.08 80); text-decoration: underline; text-underline-offset: 4px; }

/* ========================================================
   FOOTER
   ======================================================== */
.footer {
  padding: 3.5rem 0 2rem;
  background: oklch(10% 0.02 258);
  color: oklch(75% 0.01 255);
  font-size: 0.8rem;
}
.footer__grid {
  display: grid;
  gap: 2rem;
}
.footer__brand {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  margin-bottom: 0.5rem;
  letter-spacing: 0.08em;
}
.footer__note { color: oklch(70% 0.01 255); }
.footer__links {
  display: flex; flex-wrap: wrap; gap: 1.25rem 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid oklch(100% 0 0 / 0.08);
}
.footer__links a {
  color: oklch(75% 0.01 255);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
}
.footer__links a:hover { color: #fff; }
.footer__disc {
  font-size: 0.72rem;
  line-height: 1.85;
  color: oklch(60% 0.01 255);
  padding-top: 1.5rem;
  border-top: 1px solid oklch(100% 0 0 / 0.08);
}
.footer__copy {
  margin-top: 0.5rem;
  font-size: 0.72rem;
  color: oklch(55% 0.01 255);
  letter-spacing: 0.15em;
}

/* ========================================================
   REVEAL ANIMATION (IntersectionObserver + CSS)
   ======================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 900ms var(--ease), transform 900ms var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .seal__ring { animation: none; }
  html { scroll-behavior: auto; }
}

/* focus states */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ========================================================
   HERO MEDIA CTA — YouTube prominent + note
   ======================================================== */
.hero__media {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 0.9rem;
  margin-top: 1.75rem;
  max-width: 640px;
}
@media (max-width: 720px) {
  .hero__media { grid-template-columns: 1fr; }
}
.media-cta {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 1.15rem 0.95rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background 0.25s;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}
.media-cta__text {
  display: grid;
  line-height: 1.3;
}
.media-cta__platform {
  font-family: var(--f-disp);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}
.media-cta__label {
  font-size: 0.78rem;
  opacity: 0.88;
  margin-top: 0.15rem;
}
.media-cta__arrow {
  font-family: var(--f-disp);
  font-size: 1.2rem;
  transition: transform 0.25s var(--ease-out);
}
.media-cta:hover .media-cta__arrow,
.media-cta:focus-visible .media-cta__arrow {
  transform: translateX(4px);
}
.media-cta:hover { transform: translateY(-2px); }

/* YouTube — paper card with red play-disc (editorial, not loud) */
.media-cta--youtube {
  background: var(--c-paper);
  color: var(--c-ink);
  border-color: var(--c-line);
  box-shadow: 0 10px 28px -14px oklch(20% 0.02 255 / 0.35);
  grid-row: 1;
}
.media-cta--youtube:hover {
  border-color: #c7000d;
  box-shadow: 0 18px 40px -18px oklch(52% 0.23 25 / 0.35);
}
.media-cta--youtube:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
}
.media-cta__play {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: #c7000d;
  color: #fff;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 6px 14px -6px oklch(52% 0.23 25 / 0.55);
  transition: transform 0.25s var(--ease-out);
}
.media-cta--youtube:hover .media-cta__play {
  transform: scale(1.05);
}
.media-cta--youtube .media-cta__label strong {
  font-weight: 700;
  border-bottom: 2px solid var(--c-line);
  padding-bottom: 1px;
}

/* note — secondary */
.media-cta--note {
  background: var(--c-paper);
  color: var(--c-ink);
  border-color: var(--c-line);
  box-shadow: 0 6px 20px -12px oklch(20% 0.02 255 / 0.3);
}
.media-cta--note:hover {
  border-color: var(--c-ink);
  box-shadow: 0 12px 30px -14px oklch(20% 0.02 255 / 0.45);
}
.media-cta__icon {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: oklch(95% 0.01 80);
  color: var(--c-ink);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

/* ========================================================
   ANATOMY COMPARISON (従来法 vs MIST-OPERA)
   ======================================================== */
.compare-anatomy {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: stretch;
  margin: 3rem 0 3.5rem;
}
@media (max-width: 900px) {
  .compare-anatomy { grid-template-columns: 1fr; gap: 2rem; }
}
.compare-anatomy__item {
  padding: 2rem 1.5rem 1.5rem;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: var(--c-paper);
  text-align: center;
  margin: 0;
  position: relative;
}
.compare-anatomy__item--opera {
  background: var(--c-brand-dk);
  border-color: var(--c-brand-dk);
  color: #fff;
  box-shadow: 0 30px 80px -40px oklch(30% 0.06 255 / 0.8);
}
.compare-anatomy__item--opera::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-gold));
}
.compare-anatomy__img-wrap {
  max-width: 280px;
  margin: 0 auto 1.1rem;
  aspect-ratio: 1 / 1;
  background: oklch(96% 0.01 60);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  box-shadow:
    inset 0 0 0 1px oklch(20% 0.03 250 / 0.08),
    0 18px 36px -20px oklch(20% 0.03 250 / 0.35);
}
.compare-anatomy__img-wrap img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  object-position: center;
}
.compare-anatomy__item--opera .compare-anatomy__img-wrap {
  background: oklch(96% 0.01 60);
  box-shadow:
    inset 0 0 0 1px oklch(100% 0 0 / 0.15),
    0 22px 44px -18px oklch(0% 0 0 / 0.55);
}
.compare-anatomy__label {
  font-family: var(--f-disp);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 0.4rem;
}
.compare-anatomy__item--opera .compare-anatomy__label {
  color: var(--c-gold);
}
.compare-anatomy__desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--c-ink-mute);
  margin: 0 0 1rem;
}
.compare-anatomy__item--opera .compare-anatomy__desc { color: oklch(85% 0.03 200); }
.compare-anatomy__metric {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  margin: 0.6rem auto 0;
  padding: 0.55rem 1rem;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  letter-spacing: 0.08em;
}
.compare-anatomy__metric-num {
  font-family: var(--f-disp);
  font-weight: 800;
  font-size: 1.7rem;
  letter-spacing: -0.02em;
  font-feature-settings: "tnum" 1, "lnum" 1;
  color: var(--c-ink);
  line-height: 1;
}
.compare-anatomy__metric-num small {
  font-size: 0.62em;
  font-weight: 700;
  margin-left: 0.1em;
  letter-spacing: 0.05em;
}
.compare-anatomy__metric-unit {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--c-ink-mute);
  text-transform: uppercase;
}
.compare-anatomy__metric--opera .compare-anatomy__metric-num { color: var(--c-gold); }
.compare-anatomy__item--opera .compare-anatomy__metric {
  border-color: oklch(100% 0 0 / 0.12);
}
.compare-anatomy__item--opera .compare-anatomy__metric-unit { color: oklch(75% 0.03 200); }
.compare-anatomy__arrow {
  display: grid;
  place-items: center;
  color: var(--c-accent-dk);
  width: 3rem;
}
@media (max-width: 900px) {
  .compare-anatomy__arrow { transform: rotate(90deg); width: 100%; height: 2rem; }
}

/* ========================================================
   PRINCIPLE — small entry, wide work zone + surgery photos
   ======================================================== */
.principle {
  margin: 4rem 0 3rem;
}
.principle__head {
  text-align: center;
  margin-bottom: 2.5rem;
}
.principle__title {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.6rem);
  letter-spacing: 0.04em;
  line-height: 1.4;
  margin: 0.4rem 0 1rem;
}
.principle__title em {
  font-style: normal;
  color: var(--c-accent-dk);
  border-bottom: 2px solid var(--c-gold);
  padding-bottom: 0.1em;
}
.principle__lede {
  max-width: 680px;
  margin: 0 auto;
  color: var(--c-ink-mute);
  font-size: 0.95rem;
  line-height: 1.9;
}
.principle__lede strong {
  color: var(--c-ink);
  background: linear-gradient(transparent 55%, oklch(90% 0.1 90 / 0.5) 55%);
  padding: 0 0.15em;
}
.principle__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
}
@media (max-width: 900px) {
  .principle__grid { grid-template-columns: 1fr; }
}
.principle__svg-card {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  position: relative;
  display: block;
  isolation: isolate;
}
.principle__svg-wrap {
  background: linear-gradient(180deg, oklch(99% 0 0), oklch(96% 0 0));
  border-radius: 4px;
  padding: 0.75rem;
  display: grid;
  place-items: center;
}
.principle__svg-wrap svg { width: 100%; height: auto; max-width: 380px; }
.principle__img-wrap {
  background: var(--c-paper);
  border-radius: 4px;
  padding: 1.25rem 1.5rem 1.1rem;
  display: block;
  aspect-ratio: 762 / 570;
  overflow: hidden;
  box-shadow:
    0 1px 0 oklch(20% 0.03 250 / 0.06),
    0 28px 64px -20px oklch(20% 0.03 250 / 0.25);
}
.principle__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}
/* Magazine-style overlapping caption — sits bottom-left of image, paper-colored card */
.principle__svg-card > figcaption {
  position: relative;
  z-index: 2;
  margin: -2.4rem 1rem 0 1.5rem;
  padding: 1rem 1.2rem 1.1rem;
  background: var(--c-paper);
  border-left: 2px solid var(--c-accent-dk);
  box-shadow: 0 18px 40px -24px oklch(20% 0.03 250 / 0.45);
  max-width: 90%;
}
@media (max-width: 620px) {
  .principle__svg-card > figcaption {
    margin: -1.4rem 0.6rem 0 0.6rem;
    padding: 0.85rem 1rem 1rem;
  }
}
.principle__cap-kicker {
  font-family: var(--f-disp);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--c-accent-dk);
  margin: 0 0 0.4rem;
  text-transform: uppercase;
}
.principle__cap-title {
  font-family: var(--f-disp);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-ink);
  margin: 0 0 0.4rem;
  letter-spacing: 0.03em;
}
.principle__cap-desc {
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--c-ink-mute);
  margin: 0;
}
.principle__photos {
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  gap: 1rem;
}
.principle__photo {
  margin: 0;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1rem;
  align-items: stretch;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  border-radius: 6px;
  overflow: hidden;
}
.principle__photo-wrap {
  aspect-ratio: 4/3;
  background: var(--c-paper);
  position: relative;
  overflow: hidden;
}
.principle__photo-wrap::after {
  content: "写真を assets/img/ に配置";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.7rem;
  color: oklch(60% 0.01 80);
  font-family: var(--f-disp);
  letter-spacing: 0.12em;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
/* Placeholder caption only visible if the image failed to load */
.principle__photo-wrap.is-missing::after { opacity: 0.6; }
.principle__photo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  position: relative;
  z-index: 1;
}
/* Real photograph fills the frame; flat illustrations stay contained */
.principle__photo img[src*="surgery-skin-3cm"] {
  object-fit: cover;
}
.principle__photo img[alt]:not([src=""]) { background: var(--c-paper); }
.principle__photo figcaption {
  padding: 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
@media (max-width: 620px) {
  .principle__photo { grid-template-columns: 1fr; }
  .principle__photo-wrap { aspect-ratio: 16/10; }
}

/* ========================================================
   DOCTOR OR-PHOTO
   ======================================================== */
.doctor__or-photo {
  margin: 2rem 0 0;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  max-width: 100%;
  width: 100%;
  overflow: hidden;
  position: relative;
  background: oklch(16% 0.01 260);
  box-shadow: 0 24px 60px -22px oklch(20% 0.03 250 / 0.4);
}
.doctor__or-photo::before {
  content: "手術室写真 ／ assets/img/narita-or.jpg";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: oklch(75% 0.01 260);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: opacity var(--dur) var(--ease);
}
.doctor__or-photo.is-missing::before { opacity: 0.55; }
.doctor__or-photo img {
  width: 100%;
  aspect-ratio: 2000 / 1333;
  object-fit: cover;
  object-position: center center;
  display: block;
  position: relative;
  z-index: 1;
}
.doctor__or-photo figcaption {
  padding: 0.8rem 1rem;
  font-size: 0.75rem;
  color: var(--c-ink-mute);
  letter-spacing: 0.05em;
  line-height: 1.6;
  background: var(--c-paper);
  border-top: 1px solid var(--c-line);
  position: relative;
  z-index: 1;
}
.doctor__or-kicker {
  display: block;
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--c-accent-dk);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

/* ========================================================
   SIGNATURE PHOTO
   ======================================================== */
.signature__photo {
  margin: 2rem 0 0;
  padding: 0;
  border-radius: 4px;
  overflow: hidden;
  background: linear-gradient(135deg, oklch(18% 0.01 255), oklch(12% 0.01 255));
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
}
.signature__photo::before {
  content: "ドリル実機写真 ／ assets/img/drill-diamond-closeup.png";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: oklch(65% 0.02 255);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: opacity var(--dur) var(--ease);
}
.signature__photo.is-missing::before { opacity: 0.5; }
.signature__photo {
  min-height: 420px;
}
.signature__photo img {
  width: auto;
  height: 360px;
  max-width: 100%;
  justify-self: center;
  align-self: center;
  object-fit: contain;
  margin: 1.5rem auto 0.5rem;
  filter: drop-shadow(0 18px 36px oklch(0% 0 0 / 0.45));
  display: block;
  position: relative;
  z-index: 1;
}
.signature__photo figcaption {
  padding: 0.75rem 1rem;
  color: oklch(82% 0.02 80);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  background: oklch(10% 0.01 255);
  border-top: 1px solid oklch(25% 0.01 255);
  position: relative;
  z-index: 1;
}

/* ========================================================
   FOOTER SOCIAL
   ======================================================== */
.footer__social {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}
.footer__social-link {
  display: inline-grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.95rem;
  border-radius: 100px;
  text-decoration: none;
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  transition: transform 0.2s, background 0.2s;
}
.footer__social-link small {
  display: block;
  font-family: var(--f-body);
  font-weight: 400;
  font-size: 0.7rem;
  opacity: 0.8;
  letter-spacing: 0.04em;
  margin-top: 2px;
}
.footer__social-link--youtube {
  background: transparent;
  color: inherit;
  border-color: currentColor;
  opacity: 0.8;
}
.footer__social-link--youtube .footer__social-icon {
  background: #c7000d;
  color: #fff;
  border-radius: 50%;
  width: 1.55rem;
  height: 1.55rem;
  display: inline-grid;
  place-items: center;
  margin-right: 0.05rem;
}
.footer__social-link--youtube:hover { opacity: 1; transform: translateY(-2px); }
.footer__social-link--note {
  background: transparent;
  color: inherit;
  border-color: currentColor;
  opacity: 0.8;
}
.footer__social-link--note:hover { opacity: 1; transform: translateY(-2px); }