@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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#fff;width:20px;position:absolute;top:5px;left:7px}.hero-copy{z-index:1;max-width:740px;margin-top:62px;position:relative}.badge{text-transform:uppercase;letter-spacing:.14em;background:#ffffff14;border:1px solid #ffffff61;border-radius:100px;padding:5px 10px;font-size:.67rem;font-weight:800;display:inline-block}h1{letter-spacing:-.045em;margin:14px 0 10px;font-family:Georgia,Times New Roman,serif;font-size:clamp(2.35rem,5vw,4.2rem);font-weight:500;line-height:.99}.hero p{color:#dcecf3;max-width:650px;margin:0;font-size:1.05rem;line-height:1.65}.page-grid{z-index:2;grid-template-columns:minmax(0,1.25fr) minmax(330px,.75fr);align-items:start;gap:22px;width:min(1180px,100% - 32px);margin:-42px auto 50px;display:grid;position:relative}.form-card,.empty-state,.results>*,.scenario-card,.method-card{background:var(--paper);border:1px solid #b9cad6b3;border-radius:14px;box-shadow:0 12px 36px 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0}.candidate-list{text-align:left;gap:5px;width:100%;margin-top:18px;font-size:.75rem;display:grid}.candidate-option{border:1px solid var(--line);height:auto;min-height:52px;color:var(--ink);text-align:left;background:#f8fbfd;border-radius:6px;flex-direction:column;align-items:flex-start;gap:3px;margin:0;padding:9px 11px}.candidate-option:hover:not(:disabled){background:var(--sky);color:var(--ink);transform:none}.candidate-option[aria-pressed=true]{border-color:var(--blue);background:var(--sky);box-shadow:0 0 0 2px #137c9f21}.candidate-option small{color:var(--muted);font-size:.66rem}.probability-card{background:linear-gradient(135deg,#fff,#eef8fb);justify-content:space-between;align-items:center;gap:15px;padding:26px;display:flex}.probability-card h2{max-width:220px;margin:5px 0 0;font-family:Georgia,Times New Roman,serif;font-size:1.3rem;font-weight:500}.result-context{max-width:245px;color:var(--muted);margin:9px 0 0;font-size:.72rem;line-height:1.45}.probability{color:var(--navy);letter-spacing:-.05em;font-family:Georgia,Times New Roman,serif;font-size:3.15rem;line-height:1}.probability span{color:var(--blue);font-size:1.4rem}.results>.warning{box-shadow:none;margin:0}.stat-grid{grid-template-columns:1fr 1fr;display:grid;overflow:hidden}.stat-grid article{border-right:1px solid var(--line);border-bottom:1px solid var(--line);flex-direction:column;min-height:108px;padding:18px 20px;display:flex}.stat-grid article:nth-child(2n){border-right:0}.stat-grid article:last-child{border-bottom:0}.stat-grid article:last-child:nth-child(odd){border-right:0;grid-column:1/-1}.stat-grid span{color:var(--muted);font-size:.72rem}.stat-grid strong{margin-top:7px;font-family:Georgia,Times New Roman,serif;font-size:1.22rem;font-weight:500}.stat-grid small{color:#7d8f9e;margin-top:auto;font-size:.66rem}.scenario-card{padding:24px}.scenario-card .section-heading{margin-bottom:20px;display:block}.scenario-card .section-heading>p{text-align:left;margin-top:5px}.scenario-list{gap:16px;display:grid}.scenario>div:first-child{justify-content:space-between;font-size:.8rem;display:flex}.scenario strong{color:var(--navy)}.bar{background:#e5edf2;border-radius:20px;height:7px;margin-top:7px;overflow:hidden}.bar span{border-radius:inherit;background:linear-gradient(90deg, var(--blue), #64bfd0);height:100%;display:block}.method-card{overflow:hidden}.method-card summary{cursor:pointer;justify-content:space-between;padding:20px 24px;font-size:.86rem;font-weight:800;list-style:none;display:flex}.method-card summary:focus-visible{outline-offset:-3px;outline:3px solid #68c4dc}.method-card summary:after{content:"+";color:var(--blue);font-size:1.2rem}.method-card[open] summary:after{content:"−"}.method-content{border-top:1px solid var(--line);color:var(--muted);padding:20px 24px;font-size:.78rem;line-height:1.55}.method-content p{margin-top:0}dl{margin:16px 0 0}dl div{border-top:1px solid 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summary{cursor:pointer;color:var(--navy);justify-content:space-between;align-items:center;padding:20px 2px;font:500 1.08rem Georgia,Times New Roman,serif;list-style:none;display:flex}.accordion-list summary::-webkit-details-marker{display:none}.accordion-list summary:after{content:"+";color:var(--blue);font:500 1.35rem/1 sans-serif}.accordion-list details[open] summary:after{content:"−"}.accordion-list summary:focus-visible{outline-offset:4px;border-radius:3px;outline:3px solid #68c4dc}.accordion-content{max-width:760px;color:var(--muted);padding:0 38px 17px 2px;font-size:.84rem;line-height:1.7}.accordion-content p{margin:0 0 11px}.about-panel{grid-template-columns:.8fr 1.2fr;gap:50px;padding:42px;display:grid}.about-copy{color:var(--muted);font-size:.9rem;line-height:1.75}.about-copy p{margin:0 0 18px}@media (max-width:850px){.page-grid{grid-template-columns:1fr}.empty-state{min-height:280px}}@media (max-width:1080px){.page-grid{grid-template-columns:1fr}.empty-state{min-height:280px}}@media (max-width:600px){.top-navigation{justify-content:stretch;position:absolute;top:56px;left:20px;right:20px}.top-navigation button{flex:1;padding:0 6px}.hero{padding-inline:20px;min-height:340px;padding-bottom:105px}.hero-copy{margin-top:88px}.page-grid{width:min(100% - 20px,1180px);margin-top:-30px}.form-card{padding:22px 18px}.section-heading{display:block}.section-heading>p{text-align:left;margin-top:7px}.route-grid,.time-grid,.flight-number-grid,.flight-schedule-grid{grid-template-columns:1fr}.flight-number-grid label:last-child{grid-column:auto}.autocomplete-options{max-height:240px}.detail-grid{grid-template-columns:1fr}.probability-card{flex-direction:column;align-items:flex-start}.probability{font-size:3.8rem}.stat-grid{grid-template-columns:1fr}.stat-grid article,.stat-grid article:nth-child(2n){border-right:0;border-bottom:1px solid var(--line)}.stat-grid 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