:root {
  --bg: #f2efe8;
  --bg-soft: #fbfaf7;
  --panel: #ffffff;
  --panel-strong: #f8f4ea;
  --ink: #182431;
  --ink-soft: #506173;
  --line: #d8cfbf;
  --brand: #17395c;
  --brand-2: #285f8f;
  --accent: #d97706;
  --accent-2: #b45309;
  --success: #0f766e;
  --danger: #b42318;
  --shadow-sm: 0 8px 24px rgba(24, 36, 49, 0.08);
  --shadow-md: 0 16px 40px rgba(24, 36, 49, 0.12);
  --shadow-xl: 0 22px 64px rgba(18, 34, 48, 0.24);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --font-sans: "Manrope", "Segoe UI", sans-serif;
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --nav-height: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 12px);
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(217, 119, 6, 0.08), transparent 28rem),
    radial-gradient(circle at 18% 72%, rgba(40, 95, 143, 0.08), transparent 26rem),
    linear-gradient(180deg, #f7f4ed 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.65;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.2) 1px, transparent 1px);
  background-size: 38px 38px;
  opacity: 0.24;
  z-index: -1;
}

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

a {
  color: var(--brand-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(15, 28, 41, 0.88);
  backdrop-filter: blur(14px);
}

.nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.28);
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 0 auto;
  padding: 0;
}

.nav-links a {
  display: inline-flex;
  padding: 9px 12px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 1.45rem;
  cursor: pointer;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 24px 78px;
  background:
    radial-gradient(circle at 18% 18%, rgba(217, 119, 6, 0.18), transparent 20rem),
    radial-gradient(circle at 84% 22%, rgba(40, 95, 143, 0.2), transparent 24rem),
    linear-gradient(135deg, #0f2436 0%, #183552 38%, #214a70 100%);
  color: #fff;
}

.hero::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  right: -140px;
  top: -120px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.24) 0%, rgba(255, 255, 255, 0) 68%);
  filter: blur(8px);
  animation: heroFloat 7s ease-in-out infinite alternate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(180deg, rgba(15, 36, 54, 0) 0%, rgba(15, 36, 54, 0.7) 100%);
  pointer-events: none;
}

@keyframes heroFloat {
  0% {
    transform: translateY(0);
    opacity: 0.72;
  }
  100% {
    transform: translateY(20px);
    opacity: 1;
  }
}

.hero-inner,
.container {
  max-width: 1240px;
  margin: 0 auto;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 28px;
  align-items: start;
}

.eyebrow-row,
.pill-row,
.profile-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.eyebrow,
.pill,
.profile-pill,
.mini-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.eyebrow {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
}

.eyebrow.accent {
  background: rgba(217, 119, 6, 0.18);
  color: #ffd49a;
  border-color: rgba(255, 212, 154, 0.2);
}

.hero-title,
.page-title,
.section-title,
.poster-title,
.report-title {
  font-family: var(--font-serif);
  line-height: 1.06;
  letter-spacing: 0.01em;
}

.hero-title {
  margin: 18px 0 12px;
  font-size: clamp(2.6rem, 5vw, 4.9rem);
  font-weight: 700;
  max-width: 14ch;
}

.hero-subtitle {
  max-width: 58rem;
  margin: 0 0 20px;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.82);
}

.author-focus-ribbon {
  margin-top: 14px;
  margin-bottom: 14px;
  padding: 14px 16px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.17) 0%, rgba(255, 255, 255, 0.08) 100%);
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.16);
}

.author-focus-ribbon strong {
  display: block;
  margin-top: 6px;
  font-size: 1.08rem;
  letter-spacing: 0.04em;
}

.author-focus-ribbon p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
}

.author-focus-tag {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(217, 119, 6, 0.24);
  color: #ffdca8;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.author-block {
  margin: 24px 0 18px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.author-line {
  margin: 0 0 6px;
  font-weight: 800;
}

.affiliation-line,
.muted {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
}

.profile-pill {
  margin-top: 12px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 0.78rem;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #f4a62d 0%, var(--accent) 100%);
  color: #1b2530;
  box-shadow: 0 10px 28px rgba(217, 119, 6, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #fff;
}

.btn-dark {
  background: var(--brand);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.88);
}

.btn-block {
  width: 100%;
}

.hero-sidecard,
.card,
.metric-card,
.paper-sheet,
.lab-shell,
.resource-card,
.figure-card,
.download-step,
.report-panel,
.poster-panel {
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

.hero-sidecard {
  padding: 22px;
  color: var(--ink);
  border: 1px solid rgba(216, 207, 191, 0.8);
}

.author-monogram {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  box-shadow: 0 12px 30px rgba(23, 57, 92, 0.24);
}

.author-card-kicker {
  margin: 12px 0 4px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 900;
}

.hero-divider {
  margin: 18px 0;
  border: 0;
  border-top: 1px solid rgba(216, 207, 191, 0.78);
}

.hero-sidecard h2,
.card h3,
.resource-card h3,
.report-panel h3,
.poster-panel h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.hero-sidecard p,
.card p,
.resource-card p,
.download-step p,
.report-panel p,
.poster-panel p {
  margin: 0;
  color: var(--ink-soft);
}

.metric-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  padding: 16px;
  background: linear-gradient(180deg, #fffefb 0%, #f5efe4 100%);
  border: 1px solid rgba(216, 207, 191, 0.9);
}

.metric-card strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1;
  color: var(--brand);
}

.metric-card span {
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-weight: 700;
}

.section {
  padding: 78px 24px;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.55) 0%, rgba(255, 255, 255, 0.2) 100%);
}

.section-title {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 700;
  color: var(--brand);
}

.section-kicker {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.78rem;
  font-weight: 900;
  color: var(--accent-2);
}

.section-subtitle {
  margin: 10px 0 0;
  max-width: 56rem;
  color: var(--ink-soft);
  font-size: 1rem;
}

.stack-md {
  display: grid;
  gap: 18px;
}

.overview-grid,
.architecture-grid,
.results-grid,
.resource-grid,
.profile-grid,
.poster-grid,
.report-grid {
  margin-top: 28px;
  display: grid;
  gap: 22px;
}

.overview-grid,
.results-grid,
.resource-grid,
.profile-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.architecture-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
}

.report-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
}

.poster-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.linkage-grid,
.implementation-grid {
  margin-top: 28px;
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
}

.card,
.resource-card,
.figure-card,
.report-panel,
.poster-panel {
  padding: 22px;
  background: var(--panel);
  border: 1px solid rgba(216, 207, 191, 0.8);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover,
.resource-card:hover,
.figure-card:hover,
.report-panel:hover,
.poster-panel:hover,
.chart-card:hover,
.mini-card:hover,
.work-card:hover {
  transform: translateY(-4px);
  border-color: rgba(40, 95, 143, 0.28);
  box-shadow: 0 16px 34px rgba(23, 57, 92, 0.12);
}

.card h3,
.resource-card h3,
.figure-card h3,
.report-panel h3,
.poster-panel h3 {
  margin-bottom: 12px;
  font-size: 1.1rem;
  color: var(--brand);
}

.list-tight {
  margin: 0;
  padding-left: 1.2rem;
}

.list-tight li {
  margin-bottom: 0.45rem;
  color: var(--ink-soft);
}

.split-callout {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  margin-top: 24px;
}

.works-grid {
  margin-top: 28px;
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.work-card {
  padding: 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #fffefb 0%, #f6efe2 100%);
  border: 1px solid rgba(216, 207, 191, 0.88);
  box-shadow: var(--shadow-sm);
}

.work-card h3 {
  margin: 10px 0 10px;
  color: var(--brand);
  font-size: 1.07rem;
}

.work-card p {
  margin: 0;
  color: var(--ink-soft);
}

.work-badge {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(23, 57, 92, 0.08);
  color: var(--brand);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-bridge {
  margin-top: 28px;
  padding: 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #132e47 0%, #20486a 100%);
  color: #fff;
}

.research-bridge h3 {
  margin: 0 0 10px;
  font-size: 1.32rem;
}

.research-bridge p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.bridge-links {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quote-box {
  padding: 18px;
  border-radius: var(--radius-md);
  background: #fff8eb;
  border: 1px solid rgba(217, 119, 6, 0.18);
  color: #65410d;
}

.quote-box strong {
  color: #8f4f07;
}

.video-frame {
  margin-top: 28px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: #0f2436;
  aspect-ratio: 16 / 9;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.video-interactive-grid {
  margin-top: 22px;
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  align-items: start;
}

.video-frame.video-frame-compact {
  margin-top: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow-xl);
}

.video-info-card {
  padding: 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #fffefb 0%, #f6efe2 100%);
  border: 1px solid rgba(216, 207, 191, 0.82);
  box-shadow: var(--shadow-sm);
}

.video-info-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
  color: var(--brand);
}

.video-info-card p {
  margin: 0;
  color: var(--ink-soft);
}

.video-meta-row {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.video-meta-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(23, 57, 92, 0.08);
  color: var(--brand);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 900;
}

.video-chapter-shell {
  margin-top: 18px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(216, 207, 191, 0.84);
  box-shadow: var(--shadow-sm);
  padding: 16px;
}

.video-chapter-buttons {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.video-chapter-btn {
  border: 1px solid rgba(23, 57, 92, 0.16);
  background: #f7f3ea;
  color: var(--brand);
  border-radius: 10px;
  padding: 10px 8px;
  font-size: 0.8rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.video-chapter-btn:hover,
.video-chapter-btn.is-active {
  background: linear-gradient(180deg, #ffffff 0%, #edf4fb 100%);
  border-color: rgba(40, 95, 143, 0.5);
  transform: translateY(-1px);
}

.video-chapter-detail {
  margin-top: 14px;
  padding: 14px;
  border-radius: 12px;
  background: #f9fbfd;
  border: 1px solid rgba(40, 95, 143, 0.14);
}

.video-chapter-detail h3 {
  margin: 0 0 8px;
  color: var(--brand);
}

.video-chapter-detail p {
  margin: 0;
  color: var(--ink-soft);
}

.video-flow-rail {
  margin-top: 12px;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.video-flow-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 8px;
  border-radius: 999px;
  background: rgba(23, 57, 92, 0.08);
  color: var(--brand);
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.video-flow-node.is-active {
  background: linear-gradient(135deg, #17395c 0%, #285f8f 100%);
  color: #fff;
}

.architecture-figure {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fffefb 0%, #f8f2e6 100%);
  border: 1px solid rgba(216, 207, 191, 0.92);
  box-shadow: var(--shadow-sm);
}

.architecture-figure img {
  border-radius: 14px;
  border: 1px solid rgba(23, 57, 92, 0.08);
}

.architecture-compact-shell {
  margin-top: 26px;
  display: grid;
  gap: 16px;
}

.architecture-top-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 1fr);
  align-items: start;
}

.architecture-figure.architecture-figure-compact {
  padding: 14px;
}

.architecture-pill-row {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.architecture-narrative {
  padding: 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #fffefb 0%, #f7f2e8 100%);
  border: 1px solid rgba(216, 207, 191, 0.86);
  box-shadow: var(--shadow-sm);
}

.architecture-narrative h3 {
  margin: 0 0 8px;
  color: var(--brand);
}

.architecture-narrative p {
  margin: 0 0 8px;
  color: var(--ink-soft);
}

.architecture-mode-row {
  margin-top: 10px;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.architecture-mode-btn {
  border: 1px solid rgba(23, 57, 92, 0.16);
  background: #f6f2e8;
  color: var(--brand);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.architecture-mode-btn:hover,
.architecture-mode-btn.is-active {
  background: linear-gradient(180deg, #ffffff 0%, #edf4fb 100%);
  border-color: rgba(40, 95, 143, 0.5);
  transform: translateY(-1px);
}

.architecture-mode-card {
  margin-top: 10px;
  padding: 12px;
  border-radius: 10px;
  background: #fafcfe;
  border: 1px solid rgba(40, 95, 143, 0.15);
}

.architecture-mode-card h4 {
  margin: 0 0 8px;
  color: var(--brand);
}

.architecture-mode-card p {
  margin: 0;
  color: var(--ink-soft);
}

.caption {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.mini-grid {
  display: grid;
  gap: 14px;
}

.mini-card {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: #fbfaf7;
  border: 1px solid rgba(216, 207, 191, 0.82);
}

.mini-card h4 {
  margin: 0 0 8px;
  font-size: 0.98rem;
  color: var(--brand);
}

.mini-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.arch-explorer {
  margin-top: 24px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(216, 207, 191, 0.84);
  background: #fff;
  box-shadow: var(--shadow-sm);
  padding: 18px;
}

.compact-headline {
  margin: 0 0 10px;
  color: var(--brand);
}

.arch-node-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.arch-node {
  border: 1px solid rgba(23, 57, 92, 0.2);
  border-radius: 12px;
  background: #f7f2e8;
  color: var(--brand);
  padding: 12px 10px;
  text-align: left;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.arch-node strong {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.arch-node span {
  display: block;
  margin-top: 4px;
  font-size: 0.9rem;
  font-weight: 700;
}

.arch-node:hover,
.arch-node.is-active {
  background: #fff;
  border-color: rgba(40, 95, 143, 0.58);
  transform: translateY(-1px);
}

.arch-detail-card {
  margin-top: 14px;
  padding: 16px;
  border-radius: 12px;
  background: #fbfaf7;
  border: 1px solid rgba(216, 207, 191, 0.84);
}

.arch-detail-card h3 {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 1.08rem;
}

.arch-detail-card p {
  margin: 0;
  color: var(--ink-soft);
}

.arch-detail-list {
  margin: 12px 0 0;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.arch-detail-list li {
  margin-bottom: 0.42rem;
}

.lab-shell {
  margin-top: 30px;
  overflow: hidden;
  border: 1px solid rgba(216, 207, 191, 0.86);
}

.lab-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 1.05fr);
}

.lab-panel,
.lab-output {
  padding: 24px;
}

.lab-panel {
  background: linear-gradient(180deg, #112b40 0%, #183552 100%);
  color: #fff;
}

.lab-panel h3,
.lab-output h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.lab-panel p {
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.8);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.field input,
.field select {
  width: 100%;
  border: 1px solid rgba(216, 207, 191, 0.9);
  border-radius: 10px;
  padding: 11px 12px;
  background: #fff;
  color: var(--ink);
}

.field small,
.note {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.preset-btn {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
}

.preset-btn:hover {
  background: rgba(255, 255, 255, 0.16);
}

.lab-output {
  background: linear-gradient(180deg, #fffefb 0%, #f5efe4 100%);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(40, 95, 143, 0.08);
  color: var(--brand-2);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lab-score {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.score-hero {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.score-hero strong {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 6vw, 4.8rem);
  line-height: 0.9;
  color: var(--brand);
}

.score-hero span {
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink-soft);
}

.risk-bar {
  height: 14px;
  width: 100%;
  border-radius: 999px;
  background: #ebe4d8;
  overflow: hidden;
}

.risk-bar-fill {
  height: 100%;
  width: 16%;
  background: linear-gradient(90deg, #0f766e 0%, #d97706 55%, #b42318 100%);
  border-radius: inherit;
  transition: width 0.25s ease;
}

.output-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.output-box {
  padding: 14px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(216, 207, 191, 0.8);
}

.output-box strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.output-box span,
.output-box p {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
  font-weight: 700;
}

.chart-grid {
  margin-top: 28px;
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.chart-grid.chart-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chart-card {
  padding: 20px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(216, 207, 191, 0.86);
  box-shadow: var(--shadow-sm);
}

.chart-card h3 {
  margin: 0 0 10px;
  color: var(--brand);
}

.chart-wrap {
  position: relative;
  height: 340px;
}

.chart-wrap.tight {
  height: 280px;
}

.comparison-table td strong {
  color: var(--brand);
}

.implementation-roadmap {
  margin-top: 26px;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.roadmap-step {
  padding: 16px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(216, 207, 191, 0.84);
  box-shadow: var(--shadow-sm);
}

.roadmap-step strong {
  display: inline-flex;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(23, 57, 92, 0.08);
  color: var(--brand);
}

.roadmap-step h3 {
  margin: 10px 0 8px;
  color: var(--brand);
  font-size: 1.02rem;
}

.roadmap-step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.guide-callout {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: #fff8eb;
  border: 1px solid rgba(217, 119, 6, 0.18);
  color: #6f4d1d;
}

.guide-callout h3 {
  margin: 0 0 8px;
  font-size: 1.14rem;
  color: #8f4f07;
}

.guide-callout p {
  margin: 0;
}

.code-block {
  margin-top: 12px;
  border-radius: 12px;
  background: #0f2436;
  color: #e9f2f9;
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 14px;
  overflow: auto;
  font-family: "Fira Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.5;
}

.code-block code {
  white-space: pre;
}

.stats-table {
  width: 100%;
  margin-top: 18px;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 12px;
}

.stats-table th,
.stats-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(216, 207, 191, 0.68);
}

.stats-table th {
  background: #193958;
  color: #fff;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.stats-table tr:nth-child(even) td {
  background: rgba(248, 244, 234, 0.7);
}

.stats-table tr.highlight td {
  background: rgba(15, 118, 110, 0.08);
  font-weight: 800;
}

.figure-grid {
  margin-top: 26px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.figure-card img {
  border-radius: 12px;
  border: 1px solid rgba(216, 207, 191, 0.8);
}

.paper-preview-shell {
  margin-top: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 24px;
}

.paper-sheet {
  padding: 28px 28px 22px;
  border: 1px solid rgba(23, 57, 92, 0.12);
}

.paper-topline {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 2px solid rgba(40, 95, 143, 0.18);
  padding-bottom: 12px;
  margin-bottom: 16px;
  color: var(--brand);
  font-size: 0.84rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.paper-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  line-height: 1.05;
  color: var(--ink);
}

.paper-authors,
.paper-affiliation {
  margin: 0 0 8px;
  color: var(--ink-soft);
}

.paper-columns {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.paper-columns h4 {
  margin: 0 0 8px;
  font-size: 0.84rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-2);
}

.paper-columns p {
  margin: 0 0 10px;
  font-size: 0.94rem;
  color: var(--ink-soft);
  text-align: justify;
}

.paper-lock {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 12px;
  background: #fff8eb;
  border: 1px solid rgba(217, 119, 6, 0.2);
  color: #7c4a0c;
  font-size: 0.9rem;
  font-weight: 700;
}

.policy-card {
  padding: 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #112b40 0%, #17395c 100%);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.policy-card h3 {
  margin: 0 0 12px;
  color: #fff;
}

.policy-list {
  margin: 0;
  padding-left: 1.2rem;
}

.policy-list li {
  margin-bottom: 0.6rem;
  color: rgba(255, 255, 255, 0.84);
}

.resource-card {
  display: grid;
  gap: 14px;
}

.resource-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  background: rgba(23, 57, 92, 0.08);
  color: var(--brand);
}

.pill.accent {
  background: rgba(217, 119, 6, 0.12);
  color: #8f4f07;
}

.profile-grid .resource-card a {
  font-weight: 800;
}

.footer {
  padding: 34px 24px 42px;
  background: #12283b;
  color: rgba(255, 255, 255, 0.76);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
}

.footer a {
  color: #ffe1ae;
}

.copyright-bar {
  max-width: 1240px;
  margin: 16px auto 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.86rem;
  text-align: center;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 700;
}

.page-shell {
  padding: 46px 24px 76px;
}

.page-head {
  max-width: 1240px;
  margin: 0 auto 32px;
}

.page-title {
  margin: 0;
  font-size: clamp(2.4rem, 4.4vw, 4.2rem);
  color: var(--brand);
  font-weight: 700;
}

.page-subtitle {
  margin: 10px 0 0;
  max-width: 58rem;
  color: var(--ink-soft);
}

.report-band,
.poster-band {
  margin-top: 24px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #183552 0%, #214a70 100%);
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.report-metrics,
.poster-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.report-chip,
.poster-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.85rem;
  font-weight: 800;
}

.report-section {
  margin-top: 24px;
}

.report-section h2 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3vw, 2.8rem);
  color: var(--brand);
}

.report-section p {
  color: var(--ink-soft);
}

.report-columns {
  margin-top: 20px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.report-list {
  margin: 0;
  padding-left: 1.2rem;
}

.report-list li {
  margin-bottom: 0.55rem;
  color: var(--ink-soft);
}

.report-highlight {
  padding: 18px;
  border-radius: var(--radius-md);
  background: #fff8eb;
  border: 1px solid rgba(217, 119, 6, 0.18);
}

.report-highlight strong {
  color: #8f4f07;
}

.poster-shell {
  margin-top: 28px;
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid rgba(216, 207, 191, 0.82);
  box-shadow: var(--shadow-md);
  background:
    radial-gradient(circle at 20% 15%, rgba(217, 119, 6, 0.12), transparent 24rem),
    linear-gradient(180deg, #fff7ea 0%, #f8f1e6 100%);
}

.poster-header {
  padding: 28px 28px 22px;
  background:
    linear-gradient(135deg, rgba(23, 57, 92, 0.94) 0%, rgba(40, 95, 143, 0.94) 100%);
  color: #fff;
}

.poster-title {
  margin: 0;
  font-size: clamp(2.1rem, 3.8vw, 3.7rem);
  font-weight: 700;
}

.poster-subtitle {
  margin: 10px 0 0;
  max-width: 52rem;
  color: rgba(255, 255, 255, 0.8);
}

.poster-body {
  padding: 24px;
}

.poster-panel {
  height: 100%;
}

.poster-panel img {
  margin-top: 14px;
  border-radius: 14px;
  border: 1px solid rgba(216, 207, 191, 0.8);
}

.gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(9, 16, 25, 0.68);
  backdrop-filter: blur(8px);
}

body.gate-locked {
  overflow: hidden;
}

.is-hidden {
  display: none !important;
}

.gate-modal {
  width: min(100%, 560px);
  max-height: min(92vh, 760px);
  overflow: auto;
  padding: 26px;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 28px 70px rgba(9, 16, 25, 0.3);
}

.gate-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: start;
  margin-bottom: 18px;
}

.gate-head h3 {
  margin: 0 0 4px;
  color: var(--brand);
  font-size: 1.35rem;
}

.gate-head p {
  margin: 0;
  color: var(--ink-soft);
}

.gate-close {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
}

.gate-steps {
  display: grid;
  gap: 14px;
}

.download-step {
  padding: 18px;
  border: 1px solid rgba(216, 207, 191, 0.84);
}

.download-step h4 {
  margin: 0 0 8px;
  color: var(--brand);
}

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(23, 57, 92, 0.08);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.gate-check {
  display: flex;
  gap: 10px;
  align-items: start;
  margin-top: 12px;
  color: var(--ink-soft);
}

.gate-actions {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.gate-input {
  width: 100%;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(216, 207, 191, 0.9);
  background: #fff;
}

.gate-error {
  margin-top: 10px;
  color: var(--danger);
  font-size: 0.85rem;
  font-weight: 800;
}

.download-links {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.download-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.email-template {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: #f8f4ea;
  color: #5d4f3e;
  border: 1px solid rgba(216, 207, 191, 0.82);
  font-size: 0.9rem;
  white-space: pre-wrap;
}

.copy-btn {
  border: 0;
  background: #f4ead6;
  color: #65410d;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 800;
}

.reveal {
  opacity: 1;
  transform: none;
}

.is-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.is-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .hero-grid,
  .overview-grid,
  .results-grid,
  .resource-grid,
  .profile-grid,
  .poster-grid,
  .architecture-grid,
  .architecture-top-grid,
  .linkage-grid,
  .implementation-grid,
  .video-interactive-grid,
  .works-grid,
  .paper-preview-shell,
  .report-grid,
  .chart-grid,
  .chart-grid.chart-grid-3,
  .figure-grid,
  .report-columns,
  .implementation-roadmap,
  .arch-node-grid,
  .architecture-mode-row,
  .video-chapter-buttons,
  .video-flow-rail,
  .split-callout,
  .lab-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 8px);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    border-radius: 18px;
    background: rgba(15, 28, 41, 0.96);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    justify-content: center;
  }

  .paper-columns,
  .output-grid,
  .form-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .hero,
  .section,
  .page-shell {
    padding-left: 18px;
    padding-right: 18px;
  }

  .nav-inner,
  .hero-inner,
  .container,
  .page-head {
    padding-left: 0;
    padding-right: 0;
  }

  .hero-title {
    max-width: none;
  }

  .btn,
  .btn-block {
    width: 100%;
  }

  .hero-actions {
    display: grid;
  }

  .gate-modal {
    padding: 20px;
  }
}