h1, h2, h3 { font-weight: 400; }
h1 { font-size: clamp(56px, 5.8vw, 88px); line-height: 1.04; letter-spacing: -.04em; }
h2 { font-size: clamp(40px, 4.1vw, 60px); line-height: 1.08; letter-spacing: -.03em; }
h3 { font-size: 24px; letter-spacing: -.015em; }
svg { flex-shrink: 0; }
summary { cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
.hero { padding-block: 48px 40px; display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: end; }
.hero h1 { grid-column: 1 / -1; }
.hero-copy { max-width: 560px; }
.hero-copy > p { font-size: 20px; line-height: 1.5; color: var(--muted); }
.hero .author-byline { margin: 0; gap: 16px; }
.hero .author-byline > div > p { font-size: 13px; line-height: 1.5; }
.hero .author-name { font-size: 14px; }
.quick-guide { padding-inline: 24px; margin-bottom: 12px; background: white; border-radius: 16px; }
.quick-guide summary { min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.quick-guide h2 { font-size: 15px; line-height: 1.5; letter-spacing: 0; }
.quick-guide summary svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; transition: transform 180ms cubic-bezier(.22,1,.36,1); }
.quick-guide[open] summary svg { transform: rotate(180deg); }
.quick-guide > div { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; padding-block: 8px 24px; }
.quick-guide p { font-size: 14px; color: var(--muted); line-height: 1.7; max-width: 560px; }

/* A quiet status rail gives the daily schedule the largest share of the panel. */
.clock-panel { display: grid; grid-template-columns: 240px minmax(0,1fr); gap: 16px 40px; padding: 32px; background: var(--dark); color: #f7f7f8; border-radius: var(--radius); font-variant-numeric: tabular-nums; }
.clock-panel-heading { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.clock-panel-heading h2 { font-size: 24px; line-height: 1.3; letter-spacing: -.015em; }
.share-button { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 8px 16px; border-radius: 12px; background: var(--surface); font-size: 14px; }
.share-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.share-button:hover { background: #3a3a3e; }
.live-summary { grid-column: 1; grid-row: 2 / 5; display: flex; flex-direction: column; align-items: start; justify-content: space-between; gap: 32px; padding-block: 4px 24px; }
.summary-label, .clock-label { font-size: 13px; line-height: 1.5; color: var(--dark-muted); margin-bottom: 12px; }
.market-state { font-size: 32px; line-height: 1.15; letter-spacing: -.025em; }
.market-state::before { content: ''; display: inline-block; width: 8px; height: 8px; margin-right: 12px; margin-bottom: 4px; border-radius: 50%; background: var(--green); }
.market-state.is-closed::before { background: var(--dark-muted); }
.active-sessions { margin-top: 16px; font-size: 16px; line-height: 1.5; }
.market-countdown { margin-top: 8px; font-size: 14px; color: var(--dark-muted); line-height: 1.6; max-width: 25ch; }
.selected-clock { min-width: 0; }
.clock-label { margin-bottom: 8px; }
#display-clock { font-size: 40px; line-height: 1.2; letter-spacing: -.025em; white-space: nowrap; }
#display-date { margin-top: 8px; font-size: 14px; line-height: 1.5; }
#display-zone { font-size: 12px; line-height: 1.6; color: var(--dark-muted); margin-top: 4px; overflow-wrap: anywhere; }
.schedule-toolbar { grid-column: 2; grid-row: 2; display: flex; align-items: end; justify-content: space-between; gap: 16px; }
.zone-control { min-width: 0; flex: 1; max-width: 320px; }
.zone-control > span, .date-control-group > label { display: block; font-size: 13px; line-height: 1.5; color: var(--dark-muted); margin-bottom: 8px; }
#timezone-trigger { min-height: 48px; display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; border-radius: 12px; padding: 12px 16px; font-size: 14px; background: var(--surface); text-align: left; }
#timezone-trigger:hover { background: #36363a; }
#timezone-trigger span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#timezone-trigger svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.date-control-group { flex-shrink: 0; }
.date-controls { display: flex; align-items: center; gap: 4px; background: var(--surface); padding: 4px; border-radius: 12px; }
.icon-button { display: grid; place-items: center; width: 32px; height: 40px; border-radius: 8px; padding: 0; }
.icon-button svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 1.5; fill: none; }
.icon-button:hover { background: #ffffff14; }
#view-date { width: 132px; min-width: 0; height: 40px; padding: 8px 4px; color: #f7f7f8; border: 0; border-radius: 8px; background: transparent; font-size: 13px; color-scheme: dark; }
.today-button { min-height: 40px; padding: 8px 12px; font-size: 13px; border-radius: 8px; color: var(--dark-muted); }
.today-button:hover, .today-button[aria-pressed=true] { background: #444449; color: white; }
.date-error { grid-column: 2; font-size: 14px; color: #ffb3b3; }
.date-error:empty { display: none; }
.view-toolbar { grid-column: 2; grid-row: 3; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
#schedule-heading { font-size: 14px; line-height: 1.5; color: #e7e7e9; }
.view-tabs { display: flex; align-items: center; padding: 4px; gap: 4px; background: var(--surface); border-radius: 12px; }
.view-tabs button { padding: 8px 12px; min-height: 36px; border-radius: 8px; font-size: 13px; color: var(--dark-muted); }
.view-tabs button[aria-selected=true] { background: #48484d; color: white; }
.view-tabs button:hover { color: white; }
#timeline-panel, #table-panel { grid-column: 2; grid-row: 4; min-width: 0; }
.timeline-axis, .timeline-row { display: grid; grid-template-columns: 88px minmax(0,1fr); gap: 16px; }
.timeline-axis { height: 40px; align-items: start; }
.timeline-axis > span { font-size: 12px; color: var(--dark-muted); }
.time-axis { position: relative; height: 32px; font-size: 12px; color: var(--dark-muted); }
.axis-label { position: absolute; left: var(--left); top: 0; transform: translateX(-50%); white-space: nowrap; }
.axis-label:first-child { transform: none; }
.axis-label:last-child { transform: translateX(-100%); }
.timeline-rows { position: relative; }
.timeline-row { min-height: 56px; align-items: center; }
.lane-name { font-size: 14px; line-height: 1.4; }
.lane-name small { display: block; font-size: 12px; color: var(--dark-muted); margin-top: 4px; }
.lane-track { position: relative; height: 40px; border-radius: 8px; background: #ffffff05; }
.session-bar { position: absolute; left: var(--left); width: var(--width); height: 100%; border-radius: 8px; background: #424746; overflow: hidden; display: flex; align-items: center; padding-inline: 12px; color: #f0f2f1; font-size: 12px; white-space: nowrap; }
.session-bar.is-active { background: var(--green); color: #103b26; }
.session-bar.is-short { padding-inline: 0; }
.session-bar.is-short > span { display: none; }
.now-marker { position: absolute; top: -24px; bottom: 0; left: calc(104px + (100% - 104px) * var(--now)); width: 1px; pointer-events: none; z-index: 2; background: #ffffffa6; }
.now-marker > span { position: absolute; left: 0; top: 0; padding: 4px 8px; border-radius: 4px; background: #f3f4f6; color: #181818; font-size: 11px; line-height: 1.2; transform: translateX(var(--marker-shift,-50%)); white-space: nowrap; }
.closed-lane { display: flex; align-items: center; height: 100%; padding-inline: 12px; font-size: 12px; color: var(--dark-muted); }
.timeline-legend { display: flex; align-items: center; gap: 20px; margin-top: 16px; color: var(--dark-muted); font-size: 12px; line-height: 1.5; }
.timeline-legend > span { display: inline-flex; align-items: center; gap: 8px; }
.timeline-legend > span:last-child { margin-left: auto; }
.timeline-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; }
.legend-active { background: var(--green); }
.legend-scheduled { background: #747e79; }
.clock-note { grid-column: 1 / -1; display: flex; align-items: start; justify-content: space-between; gap: 32px; font-size: 12px; color: var(--dark-muted); line-height: 1.7; padding-top: 8px; }
.clock-note a { color: #f3f4f6; white-space: nowrap; text-decoration: underline; text-decoration-color: #73747a; text-underline-offset: 4px; }
.clock-note a span { margin-left: 8px; }
.schedule-table-wrap { overflow-x: auto; min-height: 330px; }
.schedule-table { width: 100%; border-collapse: separate; border-spacing: 0 4px; text-align: left; font-size: 14px; line-height: 1.5; }
.schedule-table th { font-weight: 400; font-size: 13px; color: var(--dark-muted); padding: 8px 12px; }
.schedule-table tbody th { font-size: 15px; color: white; }
.schedule-table td { background: #ffffff05; padding: 20px 12px; }
.schedule-table td:last-child { border-radius: 0 8px 8px 0; }
.schedule-table tr > :last-child { text-align: right; }

.cards-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; margin-block: 32px 16px; }
.cards-heading h2 { font-size: 24px; line-height: 1.4; letter-spacing: -.015em; }
.cards-heading p { font-size: 14px; color: var(--muted); line-height: 1.5; }
.session-cards { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); padding: 8px; background: white; border-radius: 28px; }
.session-card { padding: 24px; min-width: 0; font-variant-numeric: tabular-nums; }
.card-title { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.card-title h3 { font-size: 20px; letter-spacing: 0; }
.city-clock { font-size: 40px; letter-spacing: -.025em; line-height: 1.2; margin-top: 20px; }
.city-zone { font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.5; }
.session-card-bottom { font-size: 13px; line-height: 1.5; color: var(--muted); margin-top: 16px; }
.session-state { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; letter-spacing: 0; white-space: nowrap; }
.session-state::before { content: ''; width: 6px; height: 6px; background: #86919b; border-radius: 50%; }
.session-card.is-open .session-state { color: #17774b; }
.session-card.is-open .session-state::before { background: #17774b; }
.overlaps-section { padding-block: 96px 80px; }
.section-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: end; margin-bottom: 40px; }
.section-intro > p { max-width: 480px; font-size: 18px; color: var(--muted); line-height: 1.6; }
.overlap-cards { display: grid; gap: 8px; }
.overlap-card { display: grid; grid-template-columns: 1fr 1.2fr .8fr; gap: 24px; align-items: center; background: white; border-radius: 20px; padding: 28px 32px; }
.overlap-card h3 { font-size: 22px; line-height: 1.4; }
.overlap-time { font-size: 32px; letter-spacing: -.025em; line-height: 1.35; font-variant-numeric: tabular-nums; }
.overlap-duration { color: var(--muted); font-size: 14px; line-height: 1.6; text-align: right; }
.overlap-time.is-empty { font-size: 20px; letter-spacing: 0; }
.section-note { font-size: 14px; color: var(--muted); line-height: 1.7; margin-top: 24px; max-width: 960px; }
.sessions-section { padding-bottom: 96px; }
.reference-table-wrap { background: white; border-radius: 28px; padding: 16px 32px; overflow: auto; }
.reference-table { width: 100%; border-collapse: collapse; text-align: left; line-height: 1.5; font-size: 16px; font-variant-numeric: tabular-nums; }
.reference-table th { font-weight: 400; }
.reference-table thead th { font-size: 14px; color: var(--muted); }
.reference-table th, .reference-table td { padding: 20px 8px; }
.reference-table tbody th { font-size: 22px; }
.reference-table td:last-child { color: var(--muted); font-size: 14px; }
.explanation-section { background: var(--dark); color: white; padding-block: 80px; }
.explanation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.explanation-grid article + article { margin-top: 32px; }
.explanation-grid h3 { font-size: 24px; line-height: 1.4; }
.explanation-grid p { color: var(--dark-muted); font-size: 16px; line-height: 1.7; margin-top: 12px; }
.author-section { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; border-radius: 32px; background: white; padding: 48px; margin-block: 96px; }
.author-section h2 { font-size: 32px; margin-bottom: 32px; }
.author-identity { display: flex; align-items: center; gap: 24px; }
.author-identity img { width: 112px; height: 120px; object-fit: cover; border-radius: 20px; }
.author-identity h3 { font-size: 24px; }
.author-identity p, .author-bio, .methodology p { font-size: 14px; line-height: 1.7; color: var(--muted); margin-top: 12px; }
.author-identity a, .author-links a, .methodology a { text-decoration: underline; text-underline-offset: 4px; text-decoration-color: #b6bdc4; }
.author-bio { font-size: 16px; margin-top: 24px; }
.author-links { display: flex; gap: 24px; font-size: 14px; margin-top: 24px; }
.methodology h3 { font-size: 24px; }
.methodology .updated-date { font-size: 13px; margin-top: 20px; }
.updated-date time { margin-left: 4px; color: var(--ink); }
.faq-section { display: grid; grid-template-columns: 1fr 1.15fr; gap: 80px; padding-bottom: 96px; align-items: start; }
.faq-list { display: grid; gap: 8px; }
.faq-list details { background: white; border-radius: 20px; padding-inline: 24px; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 80px; padding-block: 24px; font-size: 16px; line-height: 1.5; }
.faq-list summary span { color: var(--muted); font-size: 24px; line-height: 1; transition: transform 180ms cubic-bezier(.22,1,.36,1); }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { font-size: 15px; color: var(--muted); line-height: 1.7; padding-bottom: 24px; }
.related-tool { display: flex; align-items: center; justify-content: space-between; gap: 40px; background: white; border-radius: 32px; padding: 48px; }
.related-tool h2 { font-size: clamp(36px,3.6vw,56px); }
.related-tool p { color: var(--muted); margin-top: 24px; font-size: 16px; line-height: 1.6; }
.related-tool > a { display: inline-flex; align-items: center; gap: 32px; background: var(--red); color: #181818; padding: 16px 24px; min-height: 52px; border-radius: 40px; font-size: 14px; }
.related-tool > a:hover { background: #ff5e5d; }
.related-tool > a span { font-size: 24px; }
.source-note { font-size: 13px; color: var(--muted); line-height: 1.8; padding-block: 32px; }
.site-footer { padding-block: 24px 40px; display: flex; justify-content: space-between; align-items: center; gap: 32px; }
.site-footer img { width: 140px; height: auto; }
.site-footer > span, .site-footer > div { font-size: 13px; color: var(--muted); }
.site-footer > div { display: flex; gap: 24px; }
.timezone-dialog { width: min(520px,calc(100% - 32px)); max-height: min(680px,calc(100dvh - 32px)); border: 0; padding: 32px; border-radius: 28px; background: white; color: var(--ink); overflow: auto; overscroll-behavior: contain; }
html:has(.timezone-dialog[open]) { overflow: hidden; }
.timezone-dialog::backdrop { background: #10111480; }
.dialog-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.dialog-header h2 { font-size: 24px; line-height: 1.3; letter-spacing: -.015em; }
.dialog-close { width: 40px; height: 40px; display: grid; place-items: center; padding: 8px; border-radius: 12px; background: var(--page); }
.dialog-close svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 1.5; }
#zone-search { display: block; width: 100%; margin-top: 24px; border: 0; background: var(--page); border-radius: 12px; min-height: 52px; padding: 12px 16px; font-size: 16px; color: var(--ink); }
.use-local-zone { display: flex; justify-content: space-between; align-items: center; width: 100%; gap: 16px; min-height: 48px; padding: 12px 8px; font-size: 14px; color: #b72124; text-align: left; }
.zone-result-count { font-size: 13px; color: var(--muted); margin-block: 8px 12px; min-height: 20px; }
.zone-options { display: grid; gap: 4px; max-height: min(360px,calc(100dvh - 296px)); min-height: 64px; overflow: auto; overscroll-behavior: contain; scrollbar-color: #adb5bc transparent; }
.zone-option { display: flex; align-items: center; justify-content: space-between; width: 100%; gap: 20px; padding: 12px; min-height: 52px; border-radius: 12px; text-align: left; font-size: 14px; }
.zone-option span { overflow-wrap: anywhere; }
.zone-option small { color: var(--muted); font-size: 13px; white-space: nowrap; }
.zone-option:hover { background: var(--page); }
.zone-option[aria-pressed=true] { background: #e9ecef; }
.toast { position: fixed; z-index: 200; left: 50%; bottom: 24px; transform: translate(-50%,12px); background: #343438; color: white; padding: 16px 24px; border-radius: 16px; max-width: min(480px,calc(100% - 32px)); font-size: 14px; line-height: 1.5; opacity: 0; pointer-events: none; transition: transform 180ms cubic-bezier(.22,1,.36,1), opacity 180ms cubic-bezier(.22,1,.36,1); }
.toast.visible { opacity: 1; transform: translate(-50%,0); }
.skip-link { position: fixed; z-index: 200; top: 16px; left: 24px; background: var(--dark); color: white; padding: 16px 24px; border-radius: 12px; opacity: 0; pointer-events: none; }
.skip-link:focus { opacity: 1; pointer-events: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; border: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.noscript { padding: 24px; background: #fff1cd; border-radius: 20px; margin-block: 16px; font-size: 15px; line-height: 1.7; }
.clock-error { grid-column: 1 / -1; padding: 16px; background: #582329; color: #ffe0e0; border-radius: 12px; font-size: 14px; line-height: 1.5; }

@media (max-width: 1366px) {
  .header-container { padding-inline: 40px; }
  .header-actions { gap: 14px; }
  .clock-panel { grid-template-columns: 208px minmax(0,1fr); gap: 16px 32px; }
  .market-state { font-size: 28px; }
  #display-clock { font-size: 36px; }
  .card-title { flex-wrap: wrap; gap: 8px; }
}
@media (max-width: 1140px) { .header-bar { gap: 10px; } }
@media (max-width: 1100px) {
  :root { --page-gutter: 48px; }
  .hero { gap: 24px 40px; }
  .hero-copy { max-width: 400px; }
  .hero-copy > p { font-size: 18px; }
  .clock-panel { display: block; }
  .clock-panel-heading { padding: 0; }
  .live-summary { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 24px; padding: 0; margin-block: 24px 32px; }
  .market-state { font-size: 32px; }
  .selected-clock { text-align: right; }
  .market-countdown { max-width: none; }
  .schedule-toolbar { gap: 24px; }
  .view-toolbar { margin-block: 24px; }
  .timeline-axis, .timeline-row { grid-template-columns: 104px minmax(0,1fr); }
  .now-marker { left: calc(120px + (100% - 120px) * var(--now)); }
  .clock-note { margin-top: 24px; }
  .session-card { padding: 24px 16px; }
  .city-clock { font-size: 36px; }
  .section-intro, .explanation-grid, .faq-section { gap: 48px; }
  .overlap-card { grid-template-columns: 1fr 1.2fr .8fr; padding: 24px; }
  .overlap-card h3 { font-size: 20px; }
  .overlap-time { font-size: 28px; }
  .author-section { padding: 40px; gap: 40px; }
  .author-identity { gap: 16px; flex-wrap: wrap; }
}
@media (max-width: 1024px) { .header-container { padding-inline: 32px; } }
@media (max-width: 1023px) { :root { --header-height: 96px; } .primary-nav, .solutions-nav { display: none; } .header-bar { gap: 16px; } .header-bar > .header-burger { display: inline-flex; } }
@media (max-width: 850px) {
  :root { --page-gutter: 32px; }
  .hero { gap: 24px 32px; padding-block: 40px 32px; }
  .hero h1 { font-size: 60px; }
  .hero-copy > p { font-size: 17px; }
  .hero .author-byline { gap: 12px; }
  .hero .author-byline > img { width: 40px; height: 40px; }
  .hero .author-name { font-size: 13px; }
  .hero .author-byline > div > p { font-size: 12px; }
  .clock-panel { padding: 28px; }
  .clock-note { display: block; }
  .clock-note a { display: inline-block; margin-top: 8px; }
  .session-cards { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .session-card { padding: 24px; }
  .card-title { flex-wrap: nowrap; }
  .city-clock { font-size: 40px; }
  .section-intro { gap: 32px; }
  .section-intro > p { font-size: 16px; }
  .overlaps-section { padding-block: 80px 64px; }
  .overlap-card { grid-template-columns: 1fr 1fr; gap: 8px 24px; }
  .overlap-card h3 { grid-row: span 2; }
  .overlap-duration { text-align: left; }
  .sessions-section { padding-bottom: 80px; }
  .reference-table-wrap { padding-inline: 24px; }
  .reference-table { font-size: 14px; }
  .reference-table tbody th { font-size: 20px; }
  .reference-table td:last-child { font-size: 13px; }
  .explanation-grid { gap: 32px; }
  .author-section { padding: 32px; gap: 32px; margin-block: 80px; }
  .author-identity h3 { font-size: 22px; }
  .author-bio { font-size: 15px; }
  .faq-section { gap: 32px; padding-bottom: 80px; }
  .related-tool { padding: 32px; }
  .related-tool > a { gap: 16px; }
}
@media (max-width: 700px) {
  :root { --page-gutter: 20px; --radius: 28px; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding-block: 32px; }
  .hero h1 { font-size: clamp(48px,11vw,64px); max-width: 11ch; }
  .hero-copy { max-width: 400px; }
  .hero-copy > p { font-size: 18px; }
  .hero .author-byline { gap: 12px; }
  .hero .author-name { font-size: 14px; }
  .hero .author-byline > div > p { font-size: 13px; }
  .quick-guide { padding-inline: 20px; }
  .quick-guide > div { grid-template-columns: 1fr; gap: 16px; }
  .clock-panel { padding: 24px 20px; }
  .clock-panel-heading h2 { font-size: 20px; }
  .share-button { padding: 12px; }
  .share-button span { display: none; }
  .live-summary { grid-template-columns: 1fr 1fr; gap: 16px; margin-block: 24px; }
  .summary-label, .clock-label { font-size: 12px; margin-bottom: 8px; }
  .market-state { font-size: 20px; letter-spacing: 0; white-space: nowrap; }
  .market-state::before { width: 6px; height: 6px; margin-right: 8px; margin-bottom: 4px; }
  .active-sessions { font-size: 14px; margin-top: 12px; }
  .market-countdown { font-size: 12px; }
  #display-clock { font-size: 28px; }
  #display-date { font-size: 12px; margin-top: 8px; }
  #display-zone { font-size: 12px; }
  .schedule-toolbar { flex-direction: column; align-items: stretch; gap: 16px; }
  .zone-control { width: 100%; max-width: none; }
  .zone-control > span, .date-control-group > label { font-size: 12px; }
  .date-controls { justify-content: space-between; }
  .icon-button { width: 40px; }
  #view-date { flex: 1; width: 112px; max-width: 168px; font-size: 14px; }
  .view-toolbar { gap: 12px; margin-block: 24px; }
  #schedule-heading { font-size: 13px; max-width: 136px; }
  .view-tabs { gap: 0; }
  .view-tabs button { padding: 8px; font-size: 12px; }
  .timeline-axis, .timeline-row { grid-template-columns: 64px minmax(0,1fr); gap: 12px; }
  .timeline-axis > span, .time-axis { font-size: 11px; }
  .axis-label:nth-child(2n):not(:last-child) { display: none; }
  .timeline-row { min-height: 64px; }
  .lane-name { font-size: 13px; }
  .lane-name small { display: none; }
  .lane-track { height: 32px; }
  .session-bar { padding-inline: 0; border-radius: 4px; }
  .session-bar > span { display: none; }
  .now-marker { left: calc(76px + (100% - 76px) * var(--now)); }
  .now-marker span { font-size: 11px; padding: 4px; }
  .timeline-legend { gap: 12px 16px; font-size: 12px; flex-wrap: wrap; }
  .timeline-legend > span:last-child { width: 100%; margin: 0; }
  .clock-note { font-size: 12px; margin-top: 24px; padding: 0; }
  .schedule-table-wrap { min-height: 348px; }
  .schedule-table { font-size: 13px; }
  .schedule-table th { font-size: 12px; padding-inline: 4px; }
  .schedule-table tbody th { font-size: 13px; }
  .schedule-table td { padding: 20px 4px; }
  .cards-heading { display: block; margin-top: 32px; }
  .cards-heading h2 { font-size: 24px; }
  .cards-heading p { margin-top: 8px; font-size: 13px; }
  .session-cards { padding: 4px; border-radius: 24px; }
  .session-card { padding: 20px 16px; }
  .card-title { flex-direction: column; align-items: start; gap: 8px; }
  .card-title h3 { font-size: 20px; }
  .session-state { font-size: 12px; }
  .city-clock { font-size: 32px; margin-top: 16px; }
  .city-zone { font-size: 12px; min-height: 36px; }
  .session-card-bottom { font-size: 12px; margin-top: 8px; }
  h2 { font-size: 40px; }
  .section-intro { grid-template-columns: 1fr; gap: 24px; margin-bottom: 32px; }
  .overlaps-section { padding-block: 64px; }
  .overlap-card { grid-template-columns: 1fr; padding: 24px; border-radius: 20px; gap: 12px; }
  .overlap-card h3 { grid-row: auto; font-size: 20px; }
  .overlap-time { font-size: 32px; }
  .overlap-duration { font-size: 14px; }
  .overlap-time.is-empty { font-size: 20px; }
  .section-note { font-size: 14px; }
  .sessions-section { padding-bottom: 64px; }
  .reference-table-wrap { padding: 8px 16px; border-radius: 24px; }
  .reference-table { font-size: 13px; }
  .reference-table thead th { font-size: 12px; }
  .reference-table th, .reference-table td { padding: 16px 4px; }
  .reference-table tbody th { font-size: 15px; }
  .reference-table td:last-child { max-width: 88px; overflow-wrap: anywhere; font-size: 12px; }
  .explanation-section { padding-block: 56px; }
  .explanation-grid { grid-template-columns: 1fr; gap: 32px; }
  .explanation-grid article + article { margin-top: 32px; }
  .explanation-grid h3 { font-size: 22px; }
  .author-section { grid-template-columns: 1fr; padding: 32px 24px; gap: 40px; margin-block: 64px; }
  .author-section h2 { font-size: 32px; margin-bottom: 24px; }
  .author-identity { flex-wrap: nowrap; }
  .author-identity img { width: 72px; height: 80px; border-radius: 12px; }
  .author-identity p { font-size: 13px; }
  .faq-section { grid-template-columns: 1fr; gap: 32px; padding-bottom: 64px; }
  .related-tool { display: block; padding: 32px 24px; border-radius: 28px; }
  .related-tool > a { margin-top: 24px; }
  .related-tool h2 { font-size: 36px; }
  .source-note { font-size: 13px; padding-block: 32px; }
  .site-footer { flex-wrap: wrap; gap: 24px; padding-bottom: 32px; }
  .site-footer > div { width: 100%; font-size: 13px; }
  .site-footer > span { font-size: 13px; }
  .site-footer img { width: 128px; }
  .timezone-dialog { padding: 24px; }
  .dialog-header h2 { font-size: 24px; }
}
@media (max-width: 580px) { .header-actions { display: none; } .header-bar { justify-content: space-between; } }
@media (max-width: 480px) { .header-container { padding-inline: 24px; } }
@media (max-width: 393px) { .header-container { padding-inline: 20px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }