/* =====================================================
   BBJS - Biwako Bone & Joint Seminar
   Stylesheet
   ===================================================== */

:root {
  --c-bg: #ffffff;
  --c-surface: #f5f7fa;
  --c-surface-2: #eef2f7;
  --c-navy: #0a2540;
  --c-navy-dark: #061629;
  --c-navy-soft: #14365a;
  --c-blue: #1e5fb8;
  --c-blue-light: #4a7bb8;
  --c-text: #1a2332;
  --c-muted: #5a6478;
  --c-border: #d8dee8;
  --c-gold: #b89668;
  --c-gold-light: #d4b88a;

  --font-serif: "Cormorant Garamond", "Noto Serif JP", serif;
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Yu Gothic", sans-serif;

  --max-w: 1240px;
  --gutter: clamp(1.25rem, 3vw, 2rem);

  --shadow-sm: 0 4px 14px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 12px 40px rgba(10, 37, 64, 0.10);
  --shadow-lg: 0 24px 80px rgba(10, 37, 64, 0.18);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease), opacity 0.3s var(--ease);
}

a:hover {
  opacity: 0.78;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ----- Container ----- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.container-narrow {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), padding 0.4s var(--ease);
}

.site-header.is-scrolled,
.site-header.is-inner {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(216, 222, 232, 0.6);
  padding: 12px 28px;
}

.site-header.is-scrolled .brand,
.site-header.is-inner .brand {
  color: var(--c-navy);
}

.site-header.is-scrolled .nav-toggle span,
.site-header.is-inner .nav-toggle span {
  background: var(--c-navy);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.06em;
  font-size: 1.1rem;
  line-height: 1.1;
  transition: color 0.4s var(--ease);
}

.brand .brand-mark {
  width: 36px;
  height: 36px;
  border: 1px solid currentColor;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  letter-spacing: 0;
  font-style: italic;
}

.brand-text small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  margin-top: 2px;
  opacity: 0.85;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.4);
  z-index: 110;
  position: relative;
}

.site-header.is-scrolled .nav-toggle,
.site-header.is-inner .nav-toggle {
  border-color: rgba(10, 37, 64, 0.2);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1px;
  background: #fff;
  position: relative;
  transition: all 0.3s var(--ease);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 1px;
  background: inherit;
  transition: all 0.3s var(--ease);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }

body.nav-open .nav-toggle span { background: transparent !important; }
body.nav-open .nav-toggle span::before { top: 0; transform: rotate(45deg); background: var(--c-navy); }
body.nav-open .nav-toggle span::after  { top: 0; transform: rotate(-45deg); background: var(--c-navy); }

/* ===== Drawer Nav ===== */
.drawer {
  position: fixed;
  inset: 0;
  background: rgba(6, 22, 41, 0.65);
  backdrop-filter: blur(8px);
  z-index: 105;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}
body.nav-open .drawer {
  opacity: 1;
  pointer-events: auto;
}

.drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(440px, 88vw);
  background: #fff;
  padding: 100px 48px 48px;
  transform: translateX(100%);
  transition: transform 0.5s var(--ease);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
body.nav-open .drawer-panel {
  transform: translateX(0);
}

.drawer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.drawer-nav a {
  display: flex;
  align-items: baseline;
  gap: 18px;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--c-navy);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-border);
}

.drawer-nav a .num {
  font-size: 0.7rem;
  font-family: var(--font-sans);
  color: var(--c-gold);
  letter-spacing: 0.15em;
}

.drawer-nav a .ja {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--c-muted);
  letter-spacing: 0.1em;
  margin-top: 4px;
}

.drawer-foot {
  margin-top: auto;
  padding-top: 32px;
  font-size: 0.75rem;
  color: var(--c-muted);
  letter-spacing: 0.1em;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  color: #fff;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 120px 0 80px;
  background: var(--c-navy-dark);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6,22,41,0.55) 0%, rgba(6,22,41,0.35) 35%, rgba(6,22,41,0.85) 100%);
  z-index: 2;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.92) contrast(1.05);
}

.hero-inner {
  position: relative;
  z-index: 3;
  width: 100%;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin: 0 0 28px;
  font-style: italic;
}
.hero-title span { display: block; }

.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.3rem);
  letter-spacing: 0.16em;
  margin-bottom: 12px;
  opacity: 0.85;
  font-weight: 300;
}

.hero-tag {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  margin-bottom: 36px;
}

.hero-lead {
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  line-height: 1.7;
  font-weight: 300;
  max-width: 720px;
  margin-bottom: 56px;
}
.hero-lead strong {
  color: var(--c-gold-light);
  font-weight: 500;
}

.hero-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 28px;
}

.hero-info-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  opacity: 0.7;
  margin-bottom: 8px;
}
.hero-info-value {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}

.hero-side {
  position: absolute;
  left: 28px;
  top: 50%;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
  font-size: 0.7rem;
  letter-spacing: 0.5em;
  opacity: 0.7;
  z-index: 4;
}

/* ===== Page Inner Hero (sub pages) ===== */
.page-hero {
  position: relative;
  height: 56vh;
  min-height: 380px;
  color: #fff;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--c-navy-dark);
}
.page-hero-media {
  position: absolute;
  inset: 0;
}
.page-hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(6,22,41,0.85) 0%, rgba(6,22,41,0.55) 60%, rgba(6,22,41,0.7) 100%);
  z-index: 2;
}
.page-hero-media img {
  width: 100%; height: 100%; object-fit: cover;
}
.page-hero-inner {
  position: relative; z-index: 3;
}
.page-hero-en {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  color: var(--c-gold-light);
  margin-bottom: 16px;
}
.page-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 400;
}
.page-hero-jp {
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  opacity: 0.85;
}

/* breadcrumb */
.breadcrumb {
  background: var(--c-surface);
  padding: 16px 0;
  font-size: 0.78rem;
  color: var(--c-muted);
  letter-spacing: 0.06em;
}
.breadcrumb a:hover { color: var(--c-blue); }
.breadcrumb .sep { margin: 0 10px; opacity: 0.5; }

/* ===== Section ===== */
.section {
  padding: clamp(72px, 10vw, 140px) 0;
  position: relative;
}
.section--light { background: var(--c-surface); }
.section--dark  { background: var(--c-navy); color: #fff; }

.section-head {
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.section-en {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  color: var(--c-gold);
  display: inline-flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 18px;
}
.section-en::before, .section-en::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--c-gold);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  line-height: 1.3;
  margin: 0;
  font-weight: 400;
  color: var(--c-navy);
}
.section--dark .section-title { color: #fff; }
.section-lead {
  margin-top: 22px;
  color: var(--c-muted);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.section--dark .section-lead { color: rgba(255,255,255,0.75); }

.section-side-label {
  position: absolute;
  left: 32px;
  top: 80px;
  writing-mode: vertical-rl;
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: var(--c-muted);
}
@media (max-width: 1024px) { .section-side-label { display: none; } }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 30px;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--c-navy);
  position: relative;
  transition: all 0.3s var(--ease);
}
.btn::after {
  content: "→";
  font-family: var(--font-serif);
  transition: transform 0.3s var(--ease);
}
.btn:hover {
  background: var(--c-navy);
  color: #fff;
  opacity: 1;
}
.btn:hover::after { transform: translateX(4px); }
.btn--primary {
  background: var(--c-navy);
  color: #fff;
  border-color: var(--c-navy);
}
.btn--primary:hover { background: var(--c-navy-dark); border-color: var(--c-navy-dark); }
.btn--ghost-light {
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn--ghost-light:hover {
  background: #fff;
  color: var(--c-navy);
}
.btn--gold {
  background: transparent;
  color: var(--c-gold);
  border-color: var(--c-gold);
}
.btn--gold:hover {
  background: var(--c-gold);
  color: #fff;
}

/* ===== Top - Concept block ===== */
.concept-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.concept-block .text h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  line-height: 1.5;
  font-weight: 400;
  color: var(--c-navy);
  margin: 0 0 24px;
}
.concept-block .text p {
  color: var(--c-muted);
  margin-bottom: 18px;
}
.concept-figure {
  position: relative;
  aspect-ratio: 4/5;
}
.concept-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.concept-figure::after {
  content: "";
  position: absolute;
  inset: 16px -16px -16px 16px;
  border: 1px solid var(--c-gold);
  z-index: -1;
}
@media (max-width: 768px) {
  .concept-block { grid-template-columns: 1fr; }
}

/* ===== Feature cards (Top) ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: #fff;
  padding: 40px 32px 36px;
  border: 1px solid var(--c-border);
  position: relative;
  transition: all 0.4s var(--ease);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature-card .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 3.5rem;
  color: var(--c-gold);
  line-height: 1;
  display: block;
  margin-bottom: 18px;
}
.feature-card h4 {
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0 0 16px;
  color: var(--c-navy);
  font-weight: 700;
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--c-muted);
  margin: 0 0 20px;
}
.feature-card .feat-img {
  aspect-ratio: 16/10;
  margin-bottom: 22px;
  overflow: hidden;
}
.feature-card .feat-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.feature-card:hover .feat-img img { transform: scale(1.06); }
@media (max-width: 900px) { .feature-grid { grid-template-columns: 1fr; } }

/* ===== Instructor preview (Top) ===== */
.instructor-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
  background: #fff;
  padding: clamp(32px, 5vw, 64px);
  border: 1px solid var(--c-border);
}
.instructor-card .photo {
  aspect-ratio: 4/5;
  background: var(--c-surface);
  overflow: hidden;
}
.instructor-card .photo img { width: 100%; height: 100%; object-fit: cover; }
.instructor-card .name-en {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--c-gold);
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}
.instructor-card h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  margin: 0 0 8px;
  font-weight: 400;
  color: var(--c-navy);
}
.instructor-card .role {
  font-size: 0.85rem;
  color: var(--c-muted);
  letter-spacing: 0.1em;
  margin-bottom: 28px;
}
.instructor-card p { color: var(--c-muted); margin: 0 0 24px; }
@media (max-width: 768px) { .instructor-card { grid-template-columns: 1fr; gap: 32px; } }

/* ===== Reports list ===== */
.report-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 900px) { .report-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .report-list { grid-template-columns: 1fr; } }

.report-card {
  background: #fff;
  border: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  transition: all 0.4s var(--ease);
}
.report-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  opacity: 1;
}
.report-card .img {
  aspect-ratio: 16/10;
  overflow: hidden;
}
.report-card .img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.report-card:hover .img img { transform: scale(1.05); }
.report-card .body { padding: 26px 28px 30px; }
.report-card .date {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--c-gold);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  display: inline-block;
  border-bottom: 1px solid var(--c-gold);
  padding-bottom: 4px;
}
.report-card h4 {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--c-navy);
  margin: 12px 0 16px;
  font-weight: 500;
}
.report-card p {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin: 0;
}

/* ===== Outline / Apply teaser ===== */
.outline-band {
  background: var(--c-navy);
  color: #fff;
  padding: clamp(60px, 8vw, 110px) 0;
  position: relative;
  overflow: hidden;
}
.outline-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 0%, rgba(184, 150, 104, 0.12), transparent 50%);
  pointer-events: none;
}
.outline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
}
.outline-grid h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 24px;
  font-weight: 400;
}
.outline-grid p {
  color: rgba(255,255,255,0.78);
  margin-bottom: 20px;
}
.dates-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.18);
  margin-top: 28px;
}
.dates-list li {
  list-style: none;
  padding: 14px 6px;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.dates-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-gold);
  border-radius: 50%;
  margin-right: 12px;
  display: inline-block;
}
@media (max-width: 768px) {
  .outline-grid { grid-template-columns: 1fr; }
  .dates-list { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--c-navy-dark);
  color: rgba(255,255,255,0.7);
  padding: 70px 0 30px;
  font-size: 0.85rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 50px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
.footer-brand {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 16px;
}
.footer-grid h5 {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--c-gold-light);
  font-size: 0.9rem;
  margin: 0 0 16px;
  letter-spacing: 0.1em;
  font-weight: 400;
}
.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-grid a { font-size: 0.85rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  opacity: 0.6;
}

/* ===== Concept page specifics ===== */
.body-prose {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--c-text);
}
.body-prose p { margin: 0 0 1.4em; }
.body-prose strong { color: var(--c-navy); font-weight: 700; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.kpi {
  background: #fff;
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--c-border);
}
.kpi .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2.6rem;
  color: var(--c-navy);
  line-height: 1;
  margin-bottom: 8px;
}
.kpi .num small { font-size: 1rem; margin-left: 4px; color: var(--c-gold); }
.kpi .label { font-size: 0.78rem; color: var(--c-muted); letter-spacing: 0.1em; }
@media (max-width: 768px) { .kpi-grid { grid-template-columns: 1fr 1fr; } }

.history-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 64px;
}
.history-block .pic {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.history-block .pic img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 768px) { .history-block { grid-template-columns: 1fr; } }

/* ===== Features page ===== */
.feat-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.feat-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 36px;
  align-items: center;
  padding: 32px 36px;
  background: #fff;
  border: 1px solid var(--c-border);
  transition: all 0.3s var(--ease);
}
.feat-row:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--c-blue-light);
}
.feat-row .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2.6rem;
  color: var(--c-gold);
  line-height: 1;
  width: 60px;
}
.feat-row h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-navy);
  margin: 0 0 8px;
}
.feat-row p { font-size: 0.9rem; color: var(--c-muted); margin: 0; }
.feat-row .thumb {
  width: 160px;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.feat-row .thumb img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 768px) {
  .feat-row { grid-template-columns: 1fr; gap: 16px; padding: 24px; }
  .feat-row .thumb { width: 100%; }
}

.tech-list .feat-row .num { color: var(--c-blue); }
.feat-row .citation {
  margin-top: 8px;
  font-size: 0.76rem;
  font-style: italic;
  color: var(--c-muted);
  opacity: 0.75;
}
.citation-link {
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}
.citation-link span { transition: transform 0.15s ease; display: inline-block; }
.citation-link:hover {
  color: var(--c-navy);
}
.citation-link:hover span { transform: translateX(3px); }

/* ===== Instructor page ===== */
.profile-card {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 56px;
  background: #fff;
  padding: clamp(28px, 4vw, 56px);
  border: 1px solid var(--c-border);
  margin-bottom: 80px;
}
.profile-card .photo { aspect-ratio: 4/5; overflow: hidden; }
.profile-card .photo img { width: 100%; height: 100%; object-fit: cover; }

.profile-card .meta dl {
  margin: 0;
  display: grid;
  grid-template-columns: 130px 1fr;
  row-gap: 12px;
  font-size: 0.88rem;
  border-top: 1px solid var(--c-border);
  padding-top: 24px;
}
.profile-card dt {
  color: var(--c-muted);
  letter-spacing: 0.05em;
}
.profile-card dd { margin: 0; color: var(--c-text); }
.profile-card .name-en {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--c-gold);
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  margin-bottom: 14px;
}
.profile-card .name {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 400;
  color: var(--c-navy);
  margin: 0 0 10px;
}
.profile-card .role {
  font-size: 0.95rem;
  color: var(--c-muted);
  margin-bottom: 28px;
}
.profile-card .lead {
  margin-bottom: 28px;
  color: var(--c-text);
}
@media (max-width: 768px) {
  .profile-card { grid-template-columns: 1fr; gap: 32px; }
  .profile-card .meta dl { grid-template-columns: 100px 1fr; }
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.history-list .item {
  padding: 28px 32px;
  background: #fff;
  border-left: 3px solid var(--c-gold);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-gold);
}
.history-list h4 {
  margin: 0 0 12px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-navy);
}
.history-list p { margin: 0; font-size: 0.9rem; color: var(--c-muted); }

.tech-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
@media (max-width: 768px) { .tech-card-grid { grid-template-columns: 1fr; } }
.tech-card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--c-border);
}
.tech-card .tag {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--c-gold);
  margin-bottom: 8px;
  letter-spacing: 0.15em;
}
.tech-card h4 { margin: 0 0 10px; font-size: 1rem; color: var(--c-navy); font-weight: 700; line-height: 1.5; }
.tech-card p { margin: 0; font-size: 0.85rem; color: var(--c-muted); }

.hospital-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
@media (max-width: 700px) { .hospital-list { grid-template-columns: 1fr 1fr; } }
.hospital-list li {
  list-style: none;
  background: #fff;
  padding: 18px 22px;
  border: 1px solid var(--c-border);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hospital-list li::before {
  content: counter(h, decimal-leading-zero);
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--c-gold);
  counter-increment: h;
  font-size: 0.85rem;
}
.hospital-list { counter-reset: h; }

/* ===== Apply page ===== */
.outline-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--c-border);
}
.outline-table th, .outline-table td {
  padding: 22px 28px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--c-border);
  font-size: 0.92rem;
}
.outline-table tr:last-child th, .outline-table tr:last-child td { border-bottom: 0; }
.outline-table th {
  width: 200px;
  background: var(--c-surface);
  color: var(--c-navy);
  font-weight: 700;
  letter-spacing: 0.05em;
}
.outline-table td { color: var(--c-text); }
@media (max-width: 700px) {
  .outline-table th, .outline-table td { display: block; width: 100%; padding: 14px 18px; }
  .outline-table th { border-bottom: 0; }
}

.cta-card {
  text-align: center;
  background: var(--c-navy);
  color: #fff;
  padding: clamp(48px, 6vw, 80px) 32px;
  margin-top: 60px;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 110%, rgba(184,150,104,0.18), transparent 60%);
}
.cta-card > * { position: relative; z-index: 1; }
.cta-card h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  margin: 0 0 18px;
  font-weight: 400;
}
.cta-card p { color: rgba(255,255,255,0.8); margin: 0 0 28px; }
.cta-card .btn-large {
  font-size: 1rem;
  padding: 22px 42px;
  letter-spacing: 0.2em;
  background: var(--c-gold);
  color: #fff;
  border-color: var(--c-gold);
  display: inline-flex;
  align-items: center;
  gap: 18px;
}
.cta-card .btn-large:hover {
  background: var(--c-gold-light);
  border-color: var(--c-gold-light);
  opacity: 1;
}

/* ===== Report detail ===== */
.report-detail {
  background: #fff;
}
.report-detail .meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}
.report-detail .meta .date {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--c-gold);
  font-size: 1rem;
  letter-spacing: 0.1em;
}
.report-detail .meta .tag {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  padding: 4px 12px;
  border: 1px solid var(--c-border);
  color: var(--c-muted);
}
.report-detail h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 400;
  color: var(--c-navy);
  margin: 0 0 32px;
  line-height: 1.5;
}
.report-detail .gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 36px 0;
}
.report-detail .gallery img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
@media (max-width: 600px) { .report-detail .gallery { grid-template-columns: 1fr; } }

.pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid var(--c-border);
  margin-top: 60px;
  font-size: 0.85rem;
}
.pager a:hover { color: var(--c-blue); }

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 1rem; }
.mb-0 { margin-bottom: 0; }
.mb-3 { margin-bottom: 1.5rem; }

/* Mobile hero side-text hide */
@media (max-width: 700px) {
  .hero-side { display: none; }
  .site-header { padding: 14px 18px; }
  .hero { padding: 100px 0 60px; }
}