:root {
  --v50-bg: #f5f7f6;
  --v50-surface: #ffffff;
  --v50-surface-soft: #f8faf9;
  --v50-position: #f2f7f5;
  --v50-change: #f3f6f8;
  --v50-text: #172026;
  --v50-muted: #64727c;
  --v50-line: #dfe5e2;
  --v50-line-soft: #e9eeeb;
  --v50-accent: #245f52;
  --v50-accent-soft: #e7f1ee;
  --v50-attention: #fbf7ed;
  --v50-danger: #9d3030;
  --v50-danger-soft: #fff0f0;
  --v50-radius-sm: 10px;
  --v50-radius-md: 14px;
  --v50-radius-lg: 18px;
  --v50-report: 960px;
}

html, body { background: var(--v50-bg); color: var(--v50-text); }
body { overflow-x: clip; }
button, input, select, textarea { min-width: 0; }
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[role="button"]:focus-visible {
  outline: 3px solid var(--v50-accent-soft);
  outline-offset: 2px;
}

.container { max-width: var(--v50-report); padding: 18px 18px 64px; }
.topbar-inner { max-width: var(--v50-report); }
.card { box-shadow: none; }

.tabs {
  position: sticky;
  top: 59px;
  z-index: 15;
  width: fit-content;
  max-width: 100%;
  margin: 0 0 22px;
  padding: 4px;
  background: #e9eeeb;
  border-radius: 12px;
}
.tab { min-height: 40px; padding: 8px 16px; }
.tab.active { box-shadow: none; }

.account-menu { position: relative; }
.account-menu > summary { list-style: none; }
.account-menu > summary::-webkit-details-marker { display: none; }
.account-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 40;
  width: 180px;
  padding: 6px;
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  background: white;
  box-shadow: 0 14px 34px rgba(25,40,50,.12);
}
.account-menu-panel button {
  width: 100%;
  min-height: 42px;
  padding: 9px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--v50-text);
  text-align: left;
}
.account-menu-panel button:hover { background: var(--v50-surface-soft); }

.status-region {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: var(--v50-radius-sm);
  font-size: 14px;
  line-height: 1.5;
}
.status-region[hidden] { display: none; }
.status-region.is-success { background: var(--v50-accent-soft); color: var(--v50-accent); }
.status-region.is-notice { background: var(--v50-attention); color: #765314; }
.status-region.is-error { background: var(--v50-danger-soft); color: var(--v50-danger); }

.coordinate-hero,
.public-coordinate {
  padding: 22px;
  border: 1px solid #d4e3dd;
  border-radius: var(--v50-radius-lg);
  background: var(--v50-position);
}
.hero-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}
.hero-head h1,
.public-coordinate h1 {
  margin: 0;
  font-size: 31px;
  line-height: 1.15;
  letter-spacing: -.025em;
}
.hero-head p,
.public-coordinate > p {
  margin: 6px 0 0;
  color: var(--v50-muted);
  font-size: 15px;
  line-height: 1.55;
}
.exam-context {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 7px 10px;
  margin-top: 22px;
}
.exam-context strong { font-size: 17px; }
.exam-context span { color: var(--v50-muted); font-size: 14px; }

.coordinate-row,
.exam-list-coordinate,
.history-coordinate {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0;
}
.coordinate-row { margin-top: 9px; }
.coordinate-row > span {
  position: relative;
  font-size: 24px;
  line-height: 1.35;
  font-weight: 650;
  letter-spacing: -.012em;
}
.coordinate-row > span + span { margin-left: 26px; }
.coordinate-row > span + span::before {
  content: "·";
  position: absolute;
  left: -16px;
  color: rgba(31,41,46,.34);
  font-size: .9em;
  font-weight: 400;
}
.coordinate-note {
  margin-top: 7px;
  color: var(--v50-muted);
  font-size: 13px;
}

.reading-section,
.section-surface,
.public-history {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  background: var(--v50-surface);
}
.change-section {
  background: var(--v50-change);
  border-color: #dce5e9;
}
.section-label {
  color: var(--v50-muted);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .04em;
}
.section-head-simple,
.page-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.section-head-simple h2,
.page-heading h1,
.reading-section h2,
.public-history h2 {
  margin: 4px 0 0;
  letter-spacing: -.015em;
}
.section-head-simple h2,
.reading-section h2,
.public-history h2 { font-size: 19px; }
.page-heading { margin-bottom: 14px; }
.page-heading h1 { font-size: 28px; }
.page-heading p,
.section-head-simple p { margin: 6px 0 0; color: var(--v50-muted); line-height: 1.55; }
.change-main { display: grid; gap: 5px; margin-top: 9px; }
.change-main strong { font-size: 22px; }
.change-main span { color: var(--v50-text); }
.change-section > small { display: block; margin-top: 8px; color: var(--v50-muted); }

.change-source-list,
.subject-rows,
.exam-list,
.history-list,
.member-list,
.student-list,
.invite-list { border-top: 1px solid var(--v50-line); }
.change-source-row,
.subject-row,
.exam-list-row,
.history-row,
.member-row,
.student-row,
.invite-row {
  border-bottom: 1px solid var(--v50-line);
}
.change-source-row {
  display: grid;
  grid-template-columns: 90px 110px minmax(0,1fr);
  gap: 10px;
  align-items: center;
  min-height: 52px;
  padding: 10px 2px;
}
.change-source-row span { font-weight: 650; }
.change-source-row small { color: var(--v50-muted); }

.subjects-section { padding-bottom: 8px; }
.subject-rows { margin-top: 12px; }
.subject-row {
  display: grid;
  grid-template-columns: 72px 90px minmax(0,1fr);
  gap: 12px;
  align-items: center;
  min-height: 54px;
  padding: 9px 2px;
}
.subject-row strong { font-size: 15px; }
.subject-row b { font-size: 22px; font-weight: 700; }
.subject-row span { color: var(--v50-muted); font-size: 14px; }

.deep-trajectory {
  margin-top: 18px;
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  background: var(--v50-surface);
  overflow: clip;
}
.deep-trajectory > summary,
.public-advanced > summary,
.admin-advanced > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 18px;
  list-style: none;
  cursor: pointer;
}
.deep-trajectory > summary::-webkit-details-marker,
.public-advanced > summary::-webkit-details-marker,
.admin-advanced > summary::-webkit-details-marker,
.advanced > summary::-webkit-details-marker,
.subject-history > summary::-webkit-details-marker,
.subject-advanced > summary::-webkit-details-marker { display: none; }
.deep-trajectory > summary > span:first-child,
.public-advanced > summary > span:first-child,
.admin-advanced > summary > span:first-child { display: grid; gap: 3px; }
.deep-trajectory > summary small,
.public-advanced > summary small,
.admin-advanced > summary small { color: var(--v50-muted); }
.deep-trajectory[open] > summary > span:last-child,
.public-advanced[open] > summary > span:last-child,
.admin-advanced[open] > summary > span:last-child { transform: rotate(45deg); }
.deep-trajectory-body { padding: 0 18px 18px; }
.deep-trajectory-body section + section { margin-top: 22px; }
.deep-trajectory-body h3 { margin: 0 0 10px; }
.history-row {
  display: grid;
  grid-template-columns: minmax(150px,1fr) auto;
  gap: 18px;
  align-items: center;
  min-height: 62px;
  padding: 10px 2px;
  cursor: pointer;
}
.history-row small { display: block; margin-top: 3px; color: var(--v50-muted); }
.history-coordinate { justify-content: flex-end; gap: 12px; }
.history-coordinate span { font-size: 14px; }
.subject-history { border-bottom: 1px solid var(--v50-line); }
.subject-history > summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 11px 2px;
  cursor: pointer;
  list-style: none;
}
.subject-history > summary span { color: var(--v50-muted); font-size: 13px; }
.subject-history-row {
  display: grid;
  grid-template-columns: 70px minmax(120px,1fr) minmax(150px,1fr);
  gap: 12px;
  padding: 9px 12px;
  background: var(--v50-surface-soft);
  border-top: 1px solid var(--v50-line-soft);
}
.subject-history-row span { color: var(--v50-muted); }
.subject-history-row b { text-align: right; font-weight: 600; }

.exam-list { border-radius: var(--v50-radius-md); background: white; border-left: 1px solid var(--v50-line); border-right: 1px solid var(--v50-line); }
.exam-list-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(180px,1fr) auto 20px;
  gap: 16px;
  align-items: center;
  min-height: 72px;
  padding: 12px 14px;
  cursor: pointer;
}
.exam-list-row:hover { background: var(--v50-surface-soft); }
.exam-list-title small { display: block; margin-top: 4px; color: var(--v50-muted); }
.exam-list-coordinate { justify-content: flex-end; gap: 12px; }
.exam-list-coordinate span { font-size: 14px; font-weight: 650; }
.row-chevron { color: var(--v50-muted); font-size: 24px; }

.empty-state {
  min-height: 360px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  text-align: center;
  padding: 28px;
}
.empty-state.compact { min-height: 180px; }
.empty-state h1,
.empty-state h2,
.empty-state p { margin: 0; }
.empty-state p { max-width: 480px; color: var(--v50-muted); line-height: 1.6; }

.share-layout { display: grid; gap: 16px; }
.share-card h2 { margin-top: 0; }
.share-card > p { color: var(--v50-muted); line-height: 1.55; }
.share-scope { display: grid; gap: 8px; margin: 16px 0; }
.share-title { display: grid; gap: 3px; margin-bottom: 3px; }
.share-title small { color: var(--v50-muted); }
.share-scope > label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 12px;
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  cursor: pointer;
}
.share-scope > label:has(input:checked) { border-color: #b7cec5; background: var(--v50-position); }
.share-scope > label input { width: auto; margin-top: 3px; }
.share-scope > label span { display: grid; gap: 3px; }
.share-scope > label small { color: var(--v50-muted); }
.share-exam-picker { margin: 3px 0 0; }
.share-summary {
  display: grid;
  gap: 8px;
  margin: 12px 0;
  padding: 12px 14px;
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  background: var(--v50-surface-soft);
}
.share-summary > div { display: grid; grid-template-columns: 72px minmax(0,1fr); gap: 8px; }
.share-summary strong,
.share-summary span { font-size: 13px; }
.share-summary span { color: var(--v50-muted); line-height: 1.55; }
.advanced { margin: 12px 0; border-top: 1px solid var(--v50-line); }
.advanced > summary,
.subject-advanced > summary {
  padding: 11px 0;
  color: var(--v50-muted);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}
.advanced-body { padding: 2px 0 12px; }
.public-advanced,
.admin-advanced {
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  background: white;
}
.public-advanced > .share-card { margin: 0 14px 14px; border: 0; padding-top: 4px; }
.slug-field { display: flex; align-items: center; gap: 8px; }
.slug-field > span { color: var(--v50-muted); }
.current-shares { margin-top: 0; }
.share-item {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 2px;
}
.share-item > div > div { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.share-item small { display: block; margin-top: 5px; color: var(--v50-muted); line-height: 1.5; }

.family-layout { display: grid; gap: 16px; }
.member-row,
.student-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 60px;
  padding: 10px 2px;
}
.member-row > div:first-child,
.student-row > div:first-child { min-width: 0; }
.member-row strong,
.student-row strong { margin-right: 7px; }
.member-row small,
.student-row small { display: block; margin-top: 4px; color: var(--v50-muted); }
.member-actions { display: flex; gap: 8px; align-items: center; }
.family-add { margin-top: 12px; }
.form-stack { display: grid; gap: 12px; }
.form-two { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.account-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.account-section [data-account-result] { margin-top: 12px; }
.generated-secret,
.generated-link {
  margin-top: 12px;
  padding: 12px;
  border-radius: var(--v50-radius-md);
  background: var(--v50-surface-soft);
  word-break: break-word;
}
.generated-secret code { display: block; margin: 9px 0; font-size: 16px; user-select: all; }
.generated-link span { display: block; margin-top: 7px; font-family: ui-monospace,SFMono-Regular,Menlo,monospace; font-size: 12px; }
.generated-link small { display: block; margin-top: 7px; color: var(--v50-muted); }
.invite-tools { display: grid; grid-template-columns: minmax(180px,1fr) auto; gap: 10px; align-items: end; }
.invite-row { display: flex; justify-content: space-between; gap: 12px; padding: 10px 2px; }
.invite-row span { color: var(--v50-muted); font-size: 13px; }
.admin-advanced hr { border: 0; border-top: 1px solid var(--v50-line); margin: 22px 0; }

.dialog-backdrop {
  background: rgba(15,24,30,.42);
  padding-top: env(safe-area-inset-top);
}
.dialog {
  width: min(100%,860px);
  max-height: 94vh;
  border-radius: 20px 20px 0 0;
  padding: 0 20px 20px;
}
.dialog-head {
  top: 0;
  margin: 0 -2px;
  padding: 16px 2px 12px;
  border-bottom: 1px solid var(--v50-line);
}
.dialog-head > div { min-width: 0; }
.dialog-head h2 { margin: 0; }
.dialog-head p { margin: 5px 0 0; color: var(--v50-muted); font-size: 13px; }
.exam-section { padding: 18px 0; border-bottom: 1px solid var(--v50-line); }
.exam-section h3 { margin: 0 0 12px; }
.exam-context-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 12px; }
.overall-entry { display: grid; grid-template-columns: minmax(180px,.7fr) minmax(0,1.3fr); gap: 16px; align-items: start; }
.overall-ranks { display: grid; gap: 9px; }
.rank-pair {
  display: grid;
  grid-template-columns: 56px minmax(58px,1fr) 12px minmax(76px,1fr) 20px;
  gap: 6px;
  align-items: center;
}
.rank-pair > span:first-child { font-weight: 700; }
.rank-pair > span:not(:first-child) { color: var(--v50-muted); text-align: center; }
.exam-more { margin-bottom: -8px; }
.exam-subject-cards { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.exam-subject-card {
  padding: 14px;
  border: 1px solid var(--v50-line);
  border-radius: var(--v50-radius-md);
  background: var(--v50-surface-soft);
}
.exam-subject-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.exam-subject-head h4 { margin: 0; font-size: 17px; }
.exam-subject-head span { color: var(--v50-muted); font-size: 12px; }
.subject-score-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.subject-ranks { display: grid; gap: 7px; margin-top: 4px; }
.subject-ranks .rank-pair { grid-template-columns: 46px minmax(50px,1fr) 10px minmax(65px,1fr) 18px; }
.subject-advanced { border-top: 1px solid var(--v50-line-soft); margin-top: 9px; }
.exam-notes { margin-top: 16px; }
.draft-state { margin: 8px 0 0; color: var(--v50-muted); font-size: 12px; }
.dialog-actions { bottom: -20px; margin: 18px -20px -20px; padding: 12px 20px max(12px, env(safe-area-inset-bottom)); }
.password-dialog { width: min(100%,520px); }

.login-card { box-shadow: none; }
.login-help { margin-top: 14px; text-align: center; font-size: 13px; }
.login-help a { color: var(--v50-accent); }
.login-privacy { display: block; margin-top: 18px; color: var(--v50-muted); text-align: center; }

.public-shell { max-width: var(--v50-report); margin: auto; padding: 24px 18px 60px; }
.public-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.public-brand .brand-mark { width: 34px; height: 34px; margin: 0; border-radius: 10px; }
.privacy-note { margin: 10px 0 16px; color: var(--v50-muted); font-size: 12px; }
.public-mode {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--v50-accent-soft);
  color: var(--v50-accent);
  font-size: 11px;
  font-weight: 750;
}
.public-subjects { margin-top: 16px; border-top: 1px solid #d4e3dd; }
.public-history .history-row.is-latest { background: var(--v50-position); }
.public-history .history-row { padding-inline: 8px; }

@media (max-width: 760px) {
  .container { padding: 14px 12px 56px; }
  .topbar-inner { padding-inline: 12px; }
  .tabs { top: 55px; width: 100%; }
  .tab { flex: 1; padding-inline: 10px; }
  .coordinate-hero,
  .public-coordinate { padding: 16px; }
  .hero-head h1,
  .public-coordinate h1 { font-size: 27px; }
  .coordinate-row > span { font-size: 20px; }
  .coordinate-row { column-gap: 12px; row-gap: 5px; }
  .coordinate-row > span + span { margin-left: 0; }
  .coordinate-row > span + span::before { display: none; }
  .reading-section,
  .section-surface,
  .public-history { padding: 14px; margin-top: 12px; }
  .change-source-row { grid-template-columns: 70px 90px minmax(0,1fr); gap: 8px; }
  .subject-row { grid-template-columns: 56px 66px minmax(0,1fr); gap: 8px; }
  .subject-row b { font-size: 20px; }
  .history-row { grid-template-columns: 1fr; gap: 6px; }
  .history-coordinate { justify-content: flex-start; }
  .subject-history-row { grid-template-columns: 58px 1fr; }
  .subject-history-row b { grid-column: 1 / -1; text-align: left; color: var(--v50-muted); }
  .exam-list-row { grid-template-columns: 1fr 20px; gap: 8px; }
  .exam-list-coordinate { grid-column: 1; grid-row: 2; justify-content: flex-start; gap: 10px; }
  .row-chevron { grid-column: 2; grid-row: 1 / 3; align-self: center; }
  .page-heading { align-items: flex-end; }
  .page-heading h1 { font-size: 25px; }
  .share-summary > div { grid-template-columns: 64px minmax(0,1fr); }
  .member-row { align-items: flex-start; flex-direction: column; }
  .member-actions { width: 100%; }
  .member-actions select { flex: 1; }
  .form-two,
  .exam-context-grid,
  .overall-entry,
  .exam-subject-cards { grid-template-columns: 1fr; }
  .invite-tools { grid-template-columns: 1fr; }
  .invite-tools .btn { min-height: 44px; }
  .dialog { padding-inline: 12px; }
  .dialog-actions { margin-inline: -12px; padding-inline: 12px; }
  .rank-pair { grid-template-columns: 48px minmax(50px,1fr) 10px minmax(70px,1fr) 18px; }
  .public-shell { padding: 18px 12px 52px; }
}

@media (max-width: 380px) {
  .top-actions { gap: 5px; }
  .brand > span { font-size: 14px; }
  .coordinate-hero,
  .public-coordinate { padding: 13px; }
  .hero-head { gap: 10px; }
  .hero-head h1,
  .public-coordinate h1 { font-size: 25px; }
  .coordinate-row > span { font-size: 19px; }
  .change-source-row { grid-template-columns: 58px 78px minmax(0,1fr); font-size: 13px; }
  .subject-row { grid-template-columns: 50px 58px minmax(0,1fr); }
  .subject-row span { font-size: 13px; }
  .account-actions { display: grid; grid-template-columns: 1fr; }
  .rank-pair,
  .subject-ranks .rank-pair { grid-template-columns: 42px minmax(44px,1fr) 8px minmax(62px,1fr) 16px; gap: 4px; }
}

@media (hover: none) {
  .btn,
  .tab,
  .account-menu > summary,
  .exam-list-row,
  .share-scope > label,
  .deep-trajectory > summary,
  .public-advanced > summary,
  .admin-advanced > summary,
  .advanced > summary,
  .subject-history > summary,
  .subject-advanced > summary { min-height: 44px; }
}
.entry-stepper { display: flex; gap: 8px; margin: 12px 0 4px; color: var(--v50-muted); font-size: 12px; }
.entry-stepper span { flex: 1; padding: 8px 10px; border-bottom: 2px solid var(--v50-line); }
.entry-stepper span.is-active { color: var(--v50-text); border-color: var(--v50-accent); font-weight: 700; }
.entry-navigation { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 10px 0; }
.entry-navigation [data-entry-hint] { flex: 1; color: var(--v50-muted); font-size: 12px; text-align: center; }
.trash-section { margin-top: 20px; }
.trash-list { display: grid; gap: 8px; }
.trash-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border: 1px dashed var(--v50-line); border-radius: 10px; }
.trash-row small { display: block; color: var(--v50-muted); margin-top: 3px; }
.recovery-required { max-width: 460px; }
.recovery-ack { display: flex; gap: 8px; margin-top: 12px; font-size: 13px; }