.field-notes {
  position: relative;
  overflow: hidden;
  padding: clamp(6rem, 9vw, 9rem) 0 clamp(6.5rem, 10vw, 10rem);
  color: var(--color-text);
  background: #f7f8f5;
  scroll-margin-top: 5.2rem;
}

.field-notes::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background:
    linear-gradient(90deg, transparent 49.95%, rgba(var(--color-ink-rgb), .035) 50%, transparent 50.05%),
    radial-gradient(circle at 88% 18%, rgba(var(--color-signal-rgb), .07), transparent 24rem);
}

.field-notes .container { position: relative; z-index: 1; }

.field-notes__head {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(19rem, .72fr);
  gap: 2rem clamp(3rem, 8vw, 9rem);
  align-items: end;
  margin-bottom: clamp(3.5rem, 7vw, 6.5rem);
}

.field-notes__head h2 {
  max-width: 11ch;
  margin-top: 1.35rem;
  font-size: clamp(3rem, 5vw, 4.9rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -.055em;
}

.field-notes__head > p {
  max-width: 35rem;
  color: var(--color-text-muted);
  font-size: var(--text-body-lg);
  line-height: 1.72;
}

.field-notes__index {
  display: grid;
  grid-template-columns: minmax(18rem, .78fr) minmax(0, 1.22fr);
  min-height: 38rem;
  border-top: 1px solid rgba(var(--color-ink-rgb), .15);
  border-bottom: 1px solid rgba(var(--color-ink-rgb), .15);
}

.field-notes__selector {
  position: relative;
  min-width: 0;
  padding: 1.35rem clamp(1.5rem, 3vw, 2.75rem) 1.35rem 0;
  border-right: 1px solid rgba(var(--color-ink-rgb), .13);
}

.field-notes__selector-label,
.field-notes__reading-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  color: var(--color-signal-strong);
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .075em;
}

.field-notes__selector-label span,
.field-notes__reading-meta span:last-child { color: rgba(var(--color-ink-rgb), .46); }

.field-notes__tabs { margin-top: 2.1rem; }

.field-notes__tabs button {
  position: relative;
  width: 100%;
  min-height: 6.15rem;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) 1rem;
  gap: .8rem;
  align-items: center;
  padding: 1rem .1rem 1rem .85rem;
  color: var(--color-text);
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(var(--color-ink-rgb), .1);
  cursor: pointer;
  transition: color var(--duration-fast), padding var(--duration-medium) var(--ease-out), background var(--duration-medium);
}

.field-notes__tabs button:first-child { border-top: 1px solid rgba(var(--color-ink-rgb), .1); }
.field-notes__tabs button > span { color: rgba(var(--color-signal-rgb), .62); font-size: .58rem; font-weight: 600; letter-spacing: .07em; }
.field-notes__tabs button > strong { max-width: 25ch; font: 600 clamp(.88rem, 1.2vw, 1.02rem)/1.4 var(--font-display); letter-spacing: -.025em; }
.field-notes__tabs button > i { color: rgba(var(--color-ink-rgb), .34); font-style: normal; transition: color var(--duration-fast), transform var(--duration-medium) var(--ease-out); }
.field-notes__tabs button:hover,
.field-notes__tabs button:focus-visible,
.field-notes__tabs button[aria-selected="true"] { padding-left: 1.25rem; background: rgba(var(--color-signal-rgb), .055); }
.field-notes__tabs button[aria-selected="true"] > span { color: var(--color-signal-strong); }
.field-notes__tabs button[aria-selected="true"] > i { color: var(--color-signal-strong); transform: translate(2px, -2px); }
.field-notes__tabs button:focus-visible { z-index: 2; outline-offset: -3px; }

.field-notes__marker {
  position: absolute;
  z-index: 2;
  right: -4px;
  top: calc(4.1rem + (6.15rem * var(--active-note, 0)) + 3.075rem);
  width: 8px;
  height: 8px;
  background: var(--color-signal);
  transform: rotate(45deg);
  transition: top 300ms var(--ease-out);
}

.field-notes__marker::before { content: ""; position: absolute; right: 3px; top: 3px; width: clamp(2.5rem, 5vw, 4.5rem); height: 1px; background: linear-gradient(90deg, transparent, var(--color-signal)); transform: rotate(-45deg); transform-origin: right; }

.field-notes__reading {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 1.35rem 0 1.5rem clamp(2.5rem, 6vw, 6rem);
}

.field-note { display: none; max-width: 42rem; margin: auto 0; }
.field-note.is-active { display: block; animation: field-note-in 340ms var(--ease-out) both; }
.field-note__number { color: var(--color-signal-strong); font-size: .62rem; font-weight: 600; letter-spacing: .08em; }
.field-note h3 { max-width: 14ch; margin-top: 1.2rem; font-size: clamp(2.5rem, 4.6vw, 4.5rem); font-weight: 500; line-height: 1.01; letter-spacing: -.055em; }
.field-note__question,
.field-note__observation { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: 1.25rem; margin-top: 2.2rem; padding-top: 1.25rem; border-top: 1px solid rgba(var(--color-ink-rgb), .13); }
.field-note__question span,
.field-note__observation span { color: rgba(var(--color-ink-rgb), .46); font-size: .56rem; font-weight: 600; letter-spacing: .075em; }
.field-note__question p { max-width: 35ch; font: 500 clamp(1.05rem, 1.6vw, 1.28rem)/1.55 var(--font-display); letter-spacing: -.025em; }
.field-note__observation p { max-width: 52ch; color: var(--color-text-muted); font-size: .91rem; line-height: 1.67; }

.field-notes__annotation { display: flex; align-items: center; gap: .75rem; margin-top: auto; color: rgba(var(--color-ink-rgb), .4); font-size: .52rem; font-weight: 600; letter-spacing: .07em; }
.field-notes__annotation i { width: 2.6rem; height: 1px; background: var(--color-signal); }
.field-notes__exit { position: absolute; left: 50%; bottom: 0; width: min(100% - (var(--gutter) * 2), var(--container-main)); height: 1px; background: linear-gradient(90deg, transparent, rgba(var(--color-ink-rgb), .12), rgba(var(--color-signal-rgb), .48), transparent); transform: translateX(-50%); }
.field-notes__exit i { position: absolute; right: 28%; top: -2px; width: 5px; aspect-ratio: 1; background: var(--color-signal); }

@keyframes field-note-in { from { opacity: .92; transform: translateY(7px); } to { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .field-notes__head { grid-template-columns: 1fr; }
  .field-notes__head > p { max-width: 44rem; }
  .field-notes__index { grid-template-columns: minmax(16rem, .72fr) minmax(0, 1.28fr); }
  .field-notes__reading { padding-left: 2.25rem; }
  .field-note__question,
  .field-note__observation { grid-template-columns: 1fr; gap: .55rem; }
}

@media (max-width: 760px) {
  .field-notes { padding-block: 4.5rem 5rem; }
  .field-notes::before { opacity: .35; }
  .field-notes__head { margin-bottom: 2.6rem; }
  .field-notes__head h2 { max-width: 12ch; font-size: clamp(2.55rem, 11vw, 3rem); }
  .field-notes__head > p { font-size: .97rem; line-height: 1.67; }
  .field-notes__index { display: block; min-height: 0; border-bottom: 0; }
  .field-notes__selector { display: none; }
  .field-notes__reading { display: block; padding: 1.2rem 0 0; }
  .field-notes__reading-meta { margin-bottom: .2rem; }
  .field-note,
  .field-note.is-active { display: block; max-width: none; margin: 0; padding: 2.3rem 0 2.55rem; border-bottom: 1px solid rgba(var(--color-ink-rgb), .15); animation: none; }
  .field-note h3 { max-width: 15ch; margin-top: .9rem; font-size: clamp(2.05rem, 9vw, 2.55rem); line-height: 1.04; }
  .field-note__question,
  .field-note__observation { margin-top: 1.4rem; padding-top: .9rem; }
  .field-note__question p { font-size: 1.05rem; }
  .field-note__observation p { font-size: .9rem; }
  .field-notes__annotation { margin-top: 1.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  .field-notes__tabs button,
  .field-notes__tabs button > i,
  .field-notes__marker { transition: none; }
  .field-note.is-active { animation: none; }
}