.study-start {
  width: 100%; height: 100%; min-height: 0; display: flex; flex-direction: column; gap: 18px;
  padding: var(--format-top) max(var(--edge), env(safe-area-inset-right)) var(--content-bottom) max(var(--edge), env(safe-area-inset-left));
  color: #f3f2e9; background: radial-gradient(ellipse at 5% 0%, #345251 0%, transparent 55%), #192c37;
}
.study-start__scroll { flex: 1; min-height: 0; overflow-y: auto; scrollbar-width: thin; scrollbar-color: #68837e transparent; display: flex; flex-direction: column; }
.study-start__scroll.is-scrollable { touch-action: pan-y; }
.study-start__layout { flex: none; width: 100%; max-width: 860px; margin: auto; padding-block: 8px; }
.study-start__intro { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; margin-bottom: 24px; }
.study-start__eyebrow { margin: 0; font-size: 9px; line-height: 14px; font-weight: 650; letter-spacing: .16em; color: #b0d4c1; }
.study-start__title { grid-column: 1 / -1; margin: 0; min-width: 0; font-size: clamp(34px, 5vw, 52px); line-height: 1.08; font-weight: 600; letter-spacing: -.04em; text-wrap: balance; overflow-wrap: anywhere; }
.study-start__description { grid-column: 1 / -1; margin: 0; font-size: 13px; line-height: 1.65; color: #abbebc; }
.study-start__options { display: grid; grid-template-columns: minmax(0, 1fr); grid-auto-rows: 1fr; gap: 10px; align-content: start; }
.study-start__option {
  display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; align-items: center; gap: 12px; min-width: 0; min-height: 84px; padding: 16px;
  border: 1px solid #ffffff24; border-radius: 17px; background: #ffffff06; color: #e8eddf; text-align: left; font: inherit; cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}
.study-start__number { font-size: 11px; font-variant-numeric: tabular-nums; letter-spacing: .06em; color: #a5bbb2; }
.study-start__check { display: grid; place-items: center; flex: none; width: 22px; height: 22px; border: 1px solid #adc8bb55; border-radius: 50%; color: #d4dfce; line-height: 1; }
.study-start__check svg { display: block; width: 14px; height: 14px; }
.study-start__name { display: block; font-size: 15px; line-height: 1.35; font-weight: 600; overflow-wrap: anywhere; }
.study-start__option.is-selected { color: #24352c; background: #e4e8c8; border-color: #e4e8c8; }
.study-start__option.is-selected .study-start__number { color: #64715a; }
.study-start__option.is-selected .study-start__check { color: #e4e8c8; border-color: #354d39; background: #354d39; }
.study-start__empty { grid-column: 1 / -1; padding: 24px; border: 1px dashed #a5bbb255; border-radius: 17px; color: #c0cfbd; font-size: 14px; line-height: 1.7; }
.study-start__footer { --card-footer-color: #97aaa7; flex: none; display: flex; flex-direction: column; gap: 10px; width: 100%; max-width: 860px; margin-inline: auto; }
.study-start__status { margin: 0; min-height: 32px; font-size: 11px; line-height: 1.5; color: #c9d4b6; text-align: center; overflow-wrap: anywhere; }
.study-start__action { display: flex; align-items: center; justify-content: center; gap: 18px; width: 100%; min-height: 52px; padding: 14px 18px; border: 0; border-radius: 14px; background: #e4e8c8; color: #24352c; font: inherit; font-size: 14px; font-weight: 650; cursor: pointer; }
.study-start__arrow { display: flex; flex: none; width: 22px; height: 22px; }
.study-start__arrow svg { display: block; width: 100%; height: 100%; }
.study-start__action:disabled { color: #a8bab2; background: #ffffff12; cursor: default; }
.study-start__option:focus-visible, .study-start__action:focus-visible, .study-start__scroll:focus-visible { outline: 2px solid #edda9c; outline-offset: 3px; }
@media (hover: hover) { .study-start__option:not(:disabled):not(.is-selected):hover { background: #ffffff12; border-color: #b0d4c1; } }
@media (min-width: 700px) {
  .study-start__layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: 48px; }
  .study-start__intro { margin: 0; }
  .study-start__option { min-height: 96px; padding: 20px; }
  .study-start__description { font-size: 14px; }
}
@media (max-width: 699px) and (max-height: 690px) {
  .study-start { gap: 8px; }
  .study-start__layout { padding-block: 0; }
  .study-start__intro { margin-bottom: 12px; row-gap: 8px; }
  .study-start__title { font-size: 28px; }
  .study-start__description { font-size: 12px; line-height: 1.4; }
  .study-start__options { gap: 8px; }
  .study-start__option { min-height: 64px; padding: 10px 12px; gap: 10px; border-radius: 12px; }
  .study-start__check { width: 20px; height: 20px; }
  .study-start__check svg { width: 12px; height: 12px; }
  .study-start__name { font-size: 13px; }
  .study-start__status { min-height: 0; font-size: 10px; }
  .study-start__footer { gap: 8px; }
  .study-start__action { min-height: 46px; padding-block: 10px; }
}
@media (prefers-reduced-motion: reduce) { .study-start__option { transition: none; } }