:root{--bg: #050b1a;--bg-2: #0b1433;--panel: rgba(255, 255, 255, .045);--border: rgba(212, 175, 55, .18);--text: #f8efd9;--text-soft: rgba(248, 239, 217, .76);--text-faint: rgba(248, 239, 217, .56);--gold: #d4af37;--gold-strong: #ffe3a3;--radius: 24px;--max-width: 1200px;--shadow: 0 24px 70px rgba(0, 0, 0, .48)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 20% 0%,rgba(80,120,255,.18),transparent 32%),linear-gradient(180deg,#101a3d,#050b1a);color:var(--text);font-family:Georgia,Times New Roman,serif}button,input,textarea,select{font:inherit}a{color:inherit}.app-root{min-height:100vh}main section{scroll-margin-top:92px}.site-header{position:sticky;top:0;z-index:1000;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#050b1ae6;border-bottom:1px solid rgba(212,175,55,.18)}.site-header__inner{max-width:var(--max-width);margin:0 auto;padding:1rem 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rgba(212,175,55,.34);border-radius:999px;color:var(--gold-strong);background:#d4af3714;letter-spacing:.08em}.landing__title{margin:0 0 1.25rem;font-size:clamp(3.2rem,6vw,6rem);line-height:.95;letter-spacing:-.04em;max-width:7ch}.landing__text{max-width:42rem;color:var(--text-soft);font-size:1.12rem;line-height:1.9}.landing__actions{margin-top:2rem;display:flex;gap:1rem;flex-wrap:wrap}.hero-tree__panel{position:relative;transform:translateY(1rem);padding:1.5rem;border-radius:28px;border:1px solid rgba(212,175,55,.22);background:radial-gradient(circle at 50% 48%,rgba(212,175,55,.13),transparent 42%),radial-gradient(circle at 50% 65%,rgba(120,160,255,.1),transparent 58%),#ffffff0b;box-shadow:0 0 70px #78a0ff1a,0 0 55px #d4af3714;animation:heroTreeBreath 7s ease-in-out infinite}.hero-tree-map{position:relative;height:560px;max-width:520px;margin:0 auto}.hero-tree-map__paths{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;z-index:1}.hero-tree-map__line-base{stroke:#ffe3a36b;stroke-width:1.4;vector-effect:non-scaling-stroke;opacity:1}.hero-tree-map__line-glow{stroke:#ffe3a3c7;stroke-width:.82;vector-effect:non-scaling-stroke;opacity:1;filter:drop-shadow(0 0 4px rgba(212,175,55,.34)) drop-shadow(0 0 12px rgba(212,175,55,.18))}.hero-tree-map__line-glow--active{stroke:#ffefcd;stroke-width:1.18;filter:drop-shadow(0 0 8px rgba(212,175,55,.82)) drop-shadow(0 0 22px rgba(212,175,55,.34))}.hero-tree-path-letter{position:absolute;transform:translate(-50%,-50%);z-index:3;background:transparent;border:none;box-shadow:none;color:#ffe3a3f0;font-size:1rem;font-weight:700;line-height:1;text-shadow:0 0 5px rgba(5,11,26,1),0 0 10px rgba(5,11,26,.95),0 0 18px rgba(212,175,55,.3);pointer-events:none}.hero-tree-path-letter--active{color:var(--gold-strong);text-shadow:0 0 6px rgba(5,11,26,1),0 0 12px rgba(212,175,55,.65),0 0 24px rgba(212,175,55,.32)}.hero-tree-node{position:absolute;transform:translate(-50%,-50%);z-index:4;width:72px;height:72px;border-radius:999px;border:1px solid rgba(212,175,55,.42);background:radial-gradient(circle at 35% 28%,rgba(255,227,163,.24),transparent 34%),#ffffff0d;color:var(--text);display:grid;place-items:center;cursor:pointer;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}.hero-tree-node:hover{transform:translate(-50%,-50%) scale(1.06);border-color:#ffe3a3bf;box-shadow:0 0 24px #d4af3738,0 0 54px #78a0ff1f}.hero-tree-node--active{background:radial-gradient(circle,var(--gold-strong),var(--gold));color:#111;box-shadow:0 0 40px #d4af37b8,0 0 80px #d4af3738}.hero-tree-node__hebrew{font-size:1.12rem}.hero-tree-node__name{display:block;font-size:.58rem;letter-spacing:.08em;text-transform:uppercase;opacity:.82}.tree-gateway{display:grid;gap:2rem}.tree-gateway__eyebrow,.library__eyebrow,.chavruta-panel__eyebrow,.roots-explorer__eyebrow,.content-block__eyebrow,.support__eyebrow{color:var(--gold);letter-spacing:.18em;text-transform:uppercase;font-size:.8rem}.tree-gateway__title,.library__title,.chavruta-panel__title,.roots-explorer__title,.content-block__title,.support__title{font-size:clamp(2rem,4vw,3.5rem);line-height:1.05}.tree-gateway__text,.library__text,.chavruta-panel__text,.roots-explorer__text,.content-block__text,.support__text{max-width:860px;color:var(--text-soft)}.tree-gateway__layout{display:grid;grid-template-columns:minmax(320px,1fr) minmax(280px,.8fr);gap:2rem;align-items:center}.tree-map{position:relative;min-height:610px;border:1px solid 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rgba(212,175,55,.18);background:#ffffff0a}.tree-detail__eyebrow{font-size:1.7rem;color:var(--gold-strong)}.tree-detail__actions{display:flex;gap:1rem;margin-top:1.25rem}.roots-explorer{display:grid;gap:2rem}.roots-explorer__search{width:100%;border:1px solid rgba(212,175,55,.2);border-radius:999px;background:#ffffff0b;color:var(--text);padding:.95rem 1.1rem}.roots-explorer__layout{display:grid;grid-template-columns:minmax(240px,.72fr) minmax(0,1.28fr);gap:1.25rem}.roots-explorer__rail{display:grid;gap:.85rem}.root-choice{text-align:left;border:1px solid rgba(212,175,55,.16);border-radius:18px;background:#ffffff09;color:var(--text);padding:1rem;cursor:pointer}.root-choice--active{border-color:#d4af3794}.root-choice__hebrew{display:block;font-size:2rem;color:var(--gold-strong)}.root-scroll{border:1px solid rgba(212,175,55,.18);border-radius:22px;background:#ffffff0a;padding:1.5rem}.root-scroll__hebrew{font-size:clamp(4rem,9vw,7rem);color:var(--gold-strong)}.letter-breakdown{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1.25rem 0}.letter-card,.source-preview,.library-card,.chavruta-response{border:1px solid rgba(212,175,55,.16);border-radius:18px;background:#ffffff0a;padding:1rem}.letter-card__letter{font-size:2.6rem;color:var(--gold-strong)}.source-preview__he{direction:rtl;text-align:right;font-size:1.35rem;line-height:2;color:var(--text)}.source-preview__en{color:var(--text-soft)}.root-highlight{color:var(--gold-strong);font-weight:800;background:#d4af3724;border-radius:7px;padding:0 5px}.chavruta-panel{display:grid;gap:2rem}.chavruta-suggestions{display:flex;flex-wrap:wrap;gap:.75rem}.chavruta-chip{border:1px solid rgba(212,175,55,.22);border-radius:999px;background:#ffffff0a;color:var(--text-soft);padding:.65rem .9rem;cursor:pointer}.chavruta-form{display:grid;gap:1rem}.chavruta-field{display:grid;gap:.45rem}.chavruta-form__select,.chavruta-form__textarea{width:100%;border:1px solid rgba(212,175,55,.18);border-radius:16px;background:#ffffff0b;color:var(--text);padding:1rem}.chavruta-form__textarea{min-height:190px}.chavruta-form__actions{display:flex;gap:1rem;flex-wrap:wrap}.chavruta-form__meta{display:flex;justify-content:space-between;gap:1rem;color:var(--text-faint);font-size:.85rem}.chavruta-form__meta button{border:none;background:transparent;color:var(--gold-strong);cursor:pointer}.footer{padding:2.5rem 1.5rem;text-align:center;color:var(--text-faint)}@keyframes heroTreeBreath{0%,to{box-shadow:0 0 70px #78a0ff1a,0 0 55px #d4af3714}50%{box-shadow:0 0 96px #78a0ff29,0 0 78px #d4af3724}}@media (max-width: 980px){.hero-tree__inner,.tree-gateway__layout,.roots-explorer__layout{grid-template-columns:1fr}.hero-tree-map{height:500px}}@media (max-width: 640px){.letter-breakdown{grid-template-columns:1fr}.hero-tree-node{width:56px;height:56px}.tree-node{width:72px;height:72px}}.hero-tree-path-letter{transition:transform .25s ease,color .25s ease,text-shadow .25s ease}.hero-tree-path-letter--active{transform:translate(-50%,-50%) scale(1.55);animation:pathLetterSpark 1.2s ease-in-out infinite}@keyframes pathLetterSpark{0%,to{color:var(--gold-strong);text-shadow:0 0 5px rgba(5,11,26,1),0 0 10px rgba(212,175,55,.65),0 0 20px rgba(212,175,55,.25)}50%{color:#fff4c8;text-shadow:0 0 4px rgba(5,11,26,1),0 0 14px rgba(255,227,163,.95),0 0 34px rgba(212,175,55,.55)}}.hero-tree-path-letter{transition:transform .3s ease,color .3s ease,text-shadow .3s ease,opacity .3s ease}.hero-tree-path-letter--active{transform:translate(-50%,-50%) scale(1.8);color:#fff4c8;z-index:6;animation:pathLetterSpark 1.15s ease-in-out infinite}.hero-tree-map__line-glow--active{stroke:#ffebbe;stroke-width:1.4;filter:drop-shadow(0 0 8px rgba(212,175,55,.85)) drop-shadow(0 0 22px rgba(212,175,55,.38))}@keyframes pathLetterSpark{0%,to{text-shadow:0 0 4px rgba(5,11,26,1),0 0 10px rgba(255,227,163,.75),0 0 22px rgba(212,175,55,.35)}50%{text-shadow:0 0 4px rgba(5,11,26,1),0 0 18px rgba(255,244,200,1),0 0 42px rgba(212,175,55,.72)}}.sefaria-search{margin-top:2rem;display:grid;grid-template-columns:1fr auto;gap:1rem}.sefaria-search__input{width:100%;border:1px solid rgba(212,175,55,.2);border-radius:999px;background:#ffffff0b;color:var(--text);padding:.95rem 1.1rem;outline:none}.sefaria-search__input:focus{border-color:#ffe3a399;box-shadow:0 0 0 3px #d4af371f}.sefaria-error{margin-top:1.5rem;padding:1rem;border:1px solid rgba(255,120,120,.32);border-radius:18px;background:#ff505014;color:#ffd7d7}.sefaria-source{margin-top:2rem;padding:1.5rem;border:1px solid rgba(212,175,55,.18);border-radius:22px;background:radial-gradient(circle at top,rgba(212,175,55,.07),transparent 42%),#ffffff0a}.sefaria-source__header{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;margin-bottom:1.25rem}.sefaria-source__header h3{margin:0;font-size:1.5rem}.sefaria-source__header a{color:var(--gold-strong);text-decoration:none;font-weight:700}.sefaria-source__he{direction:rtl;text-align:right;font-size:1.55rem;line-height:2.1;color:var(--text);text-shadow:0 0 10px rgba(212,175,55,.16)}.sefaria-source__en{margin-top:1.2rem;color:var(--text-soft);line-height:1.8}.sefaria-source__actions{margin-top:1.5rem;display:flex;flex-wrap:wrap;gap:1rem}@media (max-width: 720px){.sefaria-search{grid-template-columns:1fr}.sefaria-source__header{flex-direction:column}}