:root{--knowledge-ink:#193651;--knowledge-muted:#5f7183;--knowledge-line:#d7e3ec;--knowledge-paper:#fff;--knowledge-soft:#f4f8fb;--knowledge-blue:#245b91;--knowledge-teal:#168791;--knowledge-gold:#d99137;--knowledge-red:#bd4c4c}
.knowledge-page{color:var(--knowledge-ink)}
.knowledge-page main{display:grid;gap:18px}
.knowledge-hero{position:relative;display:grid;min-height:260px;grid-template-columns:minmax(0,1.35fr) minmax(220px,.65fr);gap:24px;align-items:center;overflow:hidden;margin:0 0 18px;padding:clamp(26px,5vw,58px);border-radius:28px;background:linear-gradient(125deg,#203e77 0%,#246f93 58%,#168791 100%);color:#fff;box-shadow:0 18px 40px rgba(28,60,90,.2)}
.knowledge-hero::before,.knowledge-hero::after{position:absolute;border:1px solid rgba(255,255,255,.14);border-radius:50%;content:""}
.knowledge-hero::before{right:-90px;width:330px;height:330px}
.knowledge-hero::after{right:60px;width:160px;height:160px}
.knowledge-hero-copy{position:relative;z-index:1;max-width:780px}
.knowledge-eyebrow{margin:0 0 10px;color:#d7eef3;font-size:.72rem;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.knowledge-hero h1{max-width:800px;margin:0;font-size:clamp(2.05rem,5vw,4.25rem);line-height:.98;letter-spacing:-.045em}
.knowledge-hero p:not(.knowledge-eyebrow){max-width:760px;margin:18px 0 0;color:rgba(255,255,255,.88);font-size:clamp(.96rem,1.5vw,1.12rem);line-height:1.65}
.knowledge-hero-icon{position:relative;z-index:1;display:grid;width:clamp(130px,18vw,210px);height:clamp(130px,18vw,210px);place-items:center;justify-self:center;border:1px solid rgba(255,255,255,.22);border-radius:38%;background:rgba(255,255,255,.1);font-size:clamp(4rem,9vw,7rem);box-shadow:inset 0 1px rgba(255,255,255,.2)}
.knowledge-section,.knowledge-article,.calculator-panel{padding:clamp(20px,3vw,34px);border:1px solid var(--knowledge-line);border-radius:22px;background:var(--knowledge-paper);box-shadow:0 10px 28px rgba(29,61,86,.07)}
.knowledge-section-head{display:flex;gap:18px;align-items:end;justify-content:space-between;margin-bottom:18px}
.knowledge-section-head p{max-width:720px;margin:6px 0 0;color:var(--knowledge-muted);line-height:1.55}
.knowledge-section h2,.knowledge-article h2,.calculator-panel h2{margin:0;color:#23436a;font-size:clamp(1.35rem,2.8vw,2rem);line-height:1.13}
.knowledge-card-grid,.event-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.knowledge-card,.event-card{position:relative;display:flex;min-width:0;min-height:220px;flex-direction:column;padding:20px;border:1px solid var(--knowledge-line);border-radius:18px;background:linear-gradient(145deg,#fff,#f4f8fb);color:var(--knowledge-ink);text-decoration:none;box-shadow:0 7px 18px rgba(31,66,96,.06);transition:transform 160ms,border-color 160ms,box-shadow 160ms}
.knowledge-card:hover,.knowledge-card:focus-visible,.event-card:hover,.event-card:focus-visible{border-color:#83a9c6;transform:translateY(-3px);box-shadow:0 13px 26px rgba(31,66,96,.12);outline:3px solid rgba(36,91,145,.18);outline-offset:2px}
.knowledge-card-icon,.event-card-icon{display:grid;width:48px;height:48px;place-items:center;margin-bottom:15px;border-radius:15px;background:#e7f1f8;font-size:1.55rem}
.knowledge-card h2,.knowledge-card h3,.event-card h2,.event-card h3{margin:0;color:#23436a;font-size:1.18rem;line-height:1.2}
.knowledge-card p,.event-card p{margin:10px 0;color:var(--knowledge-muted);font-size:.88rem;line-height:1.55}
.knowledge-card small,.event-card small{margin-top:auto;color:#567087;font-size:.75rem;font-weight:800}
.event-card[data-event-tone="flood"]{border-top:4px solid #438db4}.event-card[data-event-tone="heat"]{border-top:4px solid #e0863b}.event-card[data-event-tone="snow"]{border-top:4px solid #77a7ca}.event-card[data-event-tone="cyclone"]{border-top:4px solid #7d6ab5}
.event-meta,.article-meta{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px;padding:0;list-style:none}
.event-meta li,.article-meta li,.knowledge-chip{padding:7px 10px;border-radius:999px;background:#eaf2f8;color:#315a78;font-size:.76rem;font-weight:850}
.event-facts,.knowledge-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0}
.event-fact,.knowledge-fact{padding:17px;border:1px solid var(--knowledge-line);border-radius:15px;background:var(--knowledge-soft)}
.event-fact span,.knowledge-fact span{display:block;margin-bottom:5px;color:var(--knowledge-muted);font-size:.72rem;font-weight:850;text-transform:uppercase;letter-spacing:.04em}
.event-fact strong,.knowledge-fact strong{display:block;color:#244f73;font-size:1rem;line-height:1.35}
.knowledge-prose{max-width:920px}
.knowledge-prose p{margin:0 0 15px;color:#344f66;line-height:1.75}
.knowledge-prose h2{margin:30px 0 12px}.knowledge-prose h3{margin:22px 0 8px;color:#2a5675;font-size:1.05rem}
.knowledge-prose ul,.knowledge-prose ol{display:grid;gap:8px;padding-left:22px;color:#344f66;line-height:1.6}
.knowledge-note{padding:17px 19px;border-left:5px solid var(--knowledge-gold);border-radius:13px;background:#fff7e9;color:#634b2c;line-height:1.6}
.knowledge-note[data-tone="safety"]{border-left-color:var(--knowledge-red);background:#fff1f1;color:#6c3333}
.source-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.source-list li{padding:13px 15px;border:1px solid var(--knowledge-line);border-radius:13px;background:#f8fbfd;color:#4b6477;font-size:.84rem;line-height:1.5}
.source-list a{font-weight:850}
.knowledge-related{display:flex;flex-wrap:wrap;gap:8px}
.knowledge-related a{padding:9px 12px;border:1px solid #cbdce8;border-radius:10px;background:#f4f8fb;color:#245b91;font-size:.8rem;font-weight:800;text-decoration:none}
.knowledge-related a:hover,.knowledge-related a:focus-visible{background:#e4eff7;outline:2px solid rgba(36,91,145,.22)}
.calculator-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.weather-calculator{padding:20px;border:1px solid var(--knowledge-line);border-radius:18px;background:linear-gradient(145deg,#fff,#f5f9fc)}
.weather-calculator h2{font-size:1.28rem}.weather-calculator>p{min-height:44px;color:var(--knowledge-muted);font-size:.86rem;line-height:1.5}
.calculator-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.calculator-fields label{display:grid;gap:6px;color:#425c71;font-size:.76rem;font-weight:800}
.calculator-fields input,.calculator-fields select{width:100%;min-height:44px;padding:9px 11px;border:1px solid #bfcfdd;border-radius:10px;background:#fff;color:#18364e;font:inherit}
.calculator-action{width:100%;min-height:44px;margin-top:12px;border:0;border-radius:11px;background:linear-gradient(115deg,#275b91,#168791);color:#fff;font-weight:900;cursor:pointer}
.calculator-action:hover,.calculator-action:focus-visible{filter:brightness(1.08);outline:3px solid rgba(36,91,145,.22);outline-offset:2px}
.calculator-result{min-height:76px;margin:13px 0 0;padding:14px;border-radius:13px;background:#eaf4f7;color:#1d4e64;line-height:1.5}
.calculator-result strong{display:block;font-size:1.22rem}
.calculator-result small{display:block;margin-top:4px;color:#587182}
.knowledge-alpha{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.knowledge-alpha a{display:grid;width:38px;height:38px;place-items:center;border:1px solid #cadbe7;border-radius:10px;background:#f5f9fc;color:#245b91;font-weight:900;text-decoration:none}
.knowledge-empty{padding:20px;border:1px dashed #b8cad8;border-radius:14px;color:var(--knowledge-muted);text-align:center}
@media(max-width:940px){.knowledge-card-grid,.event-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.event-facts,.knowledge-facts{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.knowledge-hero{min-height:0;grid-template-columns:1fr;padding:26px 20px;border-radius:20px}.knowledge-hero-icon{display:none}.knowledge-hero h1{font-size:clamp(2rem,11vw,3.1rem)}.knowledge-card-grid,.event-card-grid,.calculator-grid{grid-template-columns:1fr}.knowledge-card,.event-card{min-height:0}.event-facts,.knowledge-facts,.calculator-fields{grid-template-columns:1fr}.knowledge-section,.knowledge-article,.calculator-panel{padding:18px;border-radius:17px}.knowledge-section-head{align-items:start;flex-direction:column}.weather-calculator>p{min-height:0}}
@media(prefers-reduced-motion:reduce){.knowledge-card,.event-card{transition:none}}