.preview-page {
  --preview-ink: #1b1a17;
  --preview-muted: #6a645a;
  --preview-card: #fcfaf4;
  --preview-line: #cbc2b2;
  --preview-accent: #9b1f1f;
  --preview-accent-soft: #d97070;
  --preview-blue: #193f52;
  --preview-gold: #c89e32;
  --preview-green: #269476;
  --preview-purple: #8053a0;
  --preview-soft: #f6f0e2;
}

.preview-page main { width: min(1160px, 92vw); }
.preview-page .preview-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 4vw, 4.4rem);
  align-items: start;
  padding: 4.4rem 0 3.2rem;
}
.preview-page .preview-hero > div:first-child { max-width: none; }
.preview-page .preview-kicker {
  margin: 0 0 .7rem;
  color: var(--preview-accent);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 700;
}
.preview-page .preview-hero h1 {
  max-width: none;
  margin: 0 0 1.25rem;
  font-size: clamp(2.4rem, 5.5vw, 5.3rem);
  line-height: .96;
}
.preview-page .preview-hero .lead { max-width: none; font-size: 1.14rem; }
.preview-page .preview-hero-note {
  margin: 1.2rem 0 0;
  color: var(--preview-muted);
  font-size: .96rem;
}
.preview-page .preview-hero-art { position: relative; }
.preview-page .preview-portrait-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: stretch;
}
.preview-page .preview-hero-art {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 28px;
  background: #eee8db;
  box-shadow: 0 24px 65px rgba(22, 16, 12, .16);
}
.preview-page .preview-hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 42% center;
  border-radius: inherit;
  border: 1px solid color-mix(in srgb, var(--preview-accent) 35%, white 65%);
}
.preview-page .preview-self-portrait img {
  object-fit: contain;
  object-position: center;
}
.preview-page .preview-art-caption {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  max-width: 18rem;
  margin: 0;
  padding: .7rem .85rem;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 12px;
  background: rgba(252,250,244,.86);
  color: var(--preview-muted);
  font-size: .82rem;
  backdrop-filter: blur(8px);
}
.preview-page .preview-stat-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  margin: 0 0 2.8rem;
}
.preview-page .preview-stat {
  min-height: 7.4rem;
  padding: 1rem 1.05rem;
  border: 1px solid var(--preview-line);
  border-radius: 16px;
  background: rgba(252,250,244,.75);
}
.preview-page .preview-stat strong {
  display: block;
  color: var(--preview-accent);
  font-family: "Bodoni MT", Didot, "Times New Roman", serif;
  font-size: clamp(1.65rem, 3vw, 2.2rem);
  line-height: 1;
}
.preview-page .preview-stat span { display: block; margin-top: .45rem; color: var(--preview-muted); font-size: .9rem; }

.preview-page .preview-section { padding: 3rem 0; border-top: 1px solid var(--preview-line); }
.preview-page .preview-section-heading { display: block; }
.preview-page .preview-section-heading p { max-width: none; margin: 0; color: var(--preview-muted); }
.preview-page .preview-section-heading h2 { margin-bottom: .55rem; }
.preview-page .research-intro { max-width: none; }
.preview-page .research-intro h2 { max-width: none; margin-bottom: .75rem; }
.preview-page .research-intro > p:last-child { max-width: none; color: var(--preview-muted); }

.preview-page .period-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .55rem;
  align-items: end;
  margin: 2rem 0 1.2rem;
}
.preview-page .period-button {
  display: flex;
  min-height: 12rem;
  flex-direction: column;
  justify-content: end;
  gap: .65rem;
  border: 1px solid var(--preview-line);
  border-radius: 14px;
  padding: .75rem;
  background: linear-gradient(180deg, rgba(255,255,255,.18), rgba(246,240,226,.94));
  color: var(--preview-ink);
  text-align: left;
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.preview-page .period-button:hover,
.preview-page .period-button:focus-visible,
.preview-page .period-button.is-selected {
  border-color: var(--preview-accent);
  box-shadow: 0 11px 24px rgba(20,14,10,.11);
  transform: translateY(-3px);
  outline: none;
}
.preview-page .period-button.is-selected { background: #f8eee3; }
.preview-page .period-bar {
  display: block;
  width: 100%;
  min-height: 2rem;
  height: var(--bar-height);
  border-radius: 9px 9px 4px 4px;
  background: linear-gradient(180deg, var(--preview-accent-soft), var(--preview-accent));
}
.preview-page .period-button:nth-child(2) .period-bar { background: linear-gradient(180deg, #d9703f, #9b1f1f); }
.preview-page .period-button:nth-child(3) .period-bar { background: linear-gradient(180deg, #d3b45e, #9b1f1f); }
.preview-page .period-button:nth-child(4) .period-bar { background: linear-gradient(180deg, #4aa987, #27755f); }
.preview-page .period-button:nth-child(5) .period-bar { background: linear-gradient(180deg, #6e8491, #3c5765); }
.preview-page .period-years { color: var(--preview-accent); font-weight: 700; font-size: .84rem; }
.preview-page .period-title { font-size: .94rem; line-height: 1.2; }
.preview-page .period-count { color: var(--preview-muted); font-size: .78rem; }
.preview-page .preview-period-detail {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--preview-line);
  border-radius: 18px;
  background: var(--preview-card);
}
.preview-page .preview-period-detail h3 { margin-bottom: .35rem; }
.preview-page .preview-period-detail p { margin-top: .35rem; }
.preview-page .period-highlights { margin: 0; padding-left: 1.2rem; }
.preview-page .period-highlights li + li { margin-top: .35rem; }
.preview-page .preview-disclaimer { margin: .85rem 0 0; color: var(--preview-muted); font-size: .84rem; }

.preview-page .phase-intro { max-width: none; margin: 1.25rem 0 0; color: var(--preview-muted); }
.preview-page .phase-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 1.5rem;
}
.preview-page .phase-card {
  grid-column: span 2;
  min-height: 15rem;
  padding: 1rem;
  border: 1px solid var(--preview-line);
  border-radius: 16px;
  background: var(--preview-card);
}
.preview-page .phase-card:nth-child(4),
.preview-page .phase-card:nth-child(5) { grid-column: span 3; min-height: 12rem; }
.preview-page .phase-card::before {
  content: "";
  display: block;
  width: 2.2rem;
  height: .28rem;
  margin-bottom: .85rem;
  border-radius: 99px;
  background: var(--preview-accent);
}
.preview-page .phase-card:nth-child(2)::before { background: #d9703f; }
.preview-page .phase-card:nth-child(3)::before { background: #d3b45e; }
.preview-page .phase-card:nth-child(4)::before { background: #4aa987; }
.preview-page .phase-card:nth-child(5)::before { background: #6e8491; }
.preview-page .phase-years { display: block; margin-bottom: .55rem; color: var(--preview-accent); font-size: .78rem; font-weight: 700; }
.preview-page .phase-card h3 { margin: 0 0 .45rem; font-size: 1.03rem; line-height: 1.15; }
.preview-page .phase-card p { margin: 0; color: var(--preview-muted); font-size: .88rem; line-height: 1.45; }
.preview-page .phase-actions { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.35rem; }
.preview-page .phase-actions .btn { margin-top: 0; }
.preview-page .phase-note { margin: 1rem 0 0; color: var(--preview-muted); font-size: .84rem; }

.preview-page .preview-lanes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.preview-page .preview-lane { padding: 1.15rem; border: 1px solid var(--preview-line); border-radius: 16px; background: var(--preview-card); }
.preview-page .preview-lane h3 { margin-bottom: .35rem; color: var(--preview-blue); }
.preview-page .preview-lane p { margin: 0; color: var(--preview-muted); }
.preview-page .preview-lane .lane-mark { width: 2.1rem; height: 2.1rem; margin-bottom: .7rem; border-radius: 50%; background: var(--preview-accent); }
.preview-page .preview-lane:nth-child(2) .lane-mark { background: var(--preview-green); }
.preview-page .preview-lane:nth-child(3) .lane-mark { background: var(--preview-purple); }

.preview-page .preview-balance {
  position: relative;
  overflow: hidden;
  padding: clamp(1.45rem, 4vw, 3rem);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 28px;
  background:
    radial-gradient(circle at 92% 8%, rgba(240,197,125,.2), transparent 32%),
    linear-gradient(135deg, #143746, var(--preview-blue));
  color: #f8f6ef;
  box-shadow: 0 22px 55px rgba(17,43,55,.16);
}
.preview-page .preview-balance .preview-kicker { color: #f0c57d; }
.preview-page .preview-balance p { color: rgba(248,246,239,.84); }
.preview-page .preview-balance .balance-quote { max-width: none; margin: .35rem 0 1rem; font-family: "Bodoni MT", Didot, "Times New Roman", serif; font-size: clamp(1.65rem, 3.1vw, 2.65rem); line-height: 1.08; color: #fff; }
.preview-page .balance-copy { max-width: none; margin: 0; }
.preview-page .balance-list { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .7rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.preview-page .balance-list li { display: grid; gap: .15rem; padding: .9rem 1rem; border-top: 1px solid rgba(240,197,125,.68); background: rgba(255,255,255,.035); color: rgba(248,246,239,.88); }
.preview-page .balance-list strong { color: #fff; }
.preview-page .balance-list span { font-size: .84rem; }

.preview-page .preview-download {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.4rem;
  border: 1px solid var(--preview-line);
  border-radius: 20px;
  background: var(--preview-card);
}
.preview-page .preview-download h2 { margin-bottom: .35rem; }
.preview-page .preview-download p { max-width: 66ch; margin: 0; color: var(--preview-muted); }
.preview-page .preview-download .btn { flex: none; margin: 0; }

.preview-page .milestone-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem 1rem; margin-top: 1.45rem; }
.preview-page .milestone { display: grid; grid-template-columns: 6.8rem 1fr; gap: .65rem; padding: .8rem 0; border-bottom: 1px solid var(--preview-line); }
.preview-page .milestone-year { color: var(--preview-accent); font-weight: 700; }
.preview-page .milestone p { margin: 0; }
.preview-page .milestone small { display: block; margin-top: .2rem; color: var(--preview-muted); }

.preview-page .preview-archive-link { margin-top: 1.5rem; padding: 1.1rem 1.2rem; border: 1px solid var(--preview-line); border-radius: 16px; background: rgba(248,244,234,.82); }
.preview-page .preview-archive-link p { margin: .2rem 0 .8rem; color: var(--preview-muted); }
.preview-page .preview-footer-note { color: var(--preview-muted); font-size: .86rem; }

@media (max-width: 980px) {
  .preview-page .preview-hero h1 { max-width: none; }
  .preview-page .period-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .preview-page .phase-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .preview-page .phase-card,
  .preview-page .phase-card:nth-child(4),
  .preview-page .phase-card:nth-child(5) { grid-column: auto; min-height: 12rem; }
  .preview-page .preview-period-detail { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .preview-page .preview-stat-strip, .preview-page .preview-lanes, .preview-page .milestone-grid { grid-template-columns: 1fr; }
  .preview-page .period-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .preview-page .preview-portrait-pair { grid-template-columns: 1fr; }
  .preview-page .preview-hero-art { aspect-ratio: auto; }
  .preview-page .preview-hero-art img { height: auto; max-height: 78vh; }
  .preview-page .preview-self-portrait img { width: 100%; max-height: none; }
  .preview-page .preview-download { display: block; }
  .preview-page .preview-download .btn { display: inline-block; margin-top: 1rem; }
  .preview-page .balance-list { grid-template-columns: 1fr; }
  .preview-page .period-button { min-height: 10.2rem; }
  .preview-page .milestone { grid-template-columns: 5.8rem 1fr; }
  .preview-page .preview-section-heading p { margin-top: .4rem; }
}
@media (max-width: 440px) {
  .preview-page .preview-hero { padding-top: 2.5rem; }
  .preview-page .preview-hero h1 { font-size: 2.65rem; }
  .preview-page .period-grid { grid-template-columns: 1fr 1fr; gap: .4rem; }
  .preview-page .preview-portrait-pair, .preview-page .phase-grid { grid-template-columns: 1fr; }
  .preview-page .period-button { padding: .6rem; }
  .preview-page .period-title { font-size: .82rem; }
}
@media (prefers-reduced-motion: reduce) {
  .preview-page .period-button { transition: none; }
}