:root{--tk-navy-core:var(--bt-color-core-navy,#111827);--tk-cyan:var(--bt-color-core-cyan,#06b6d4);--tk-cyan-ink:var(--bt-color-derived-cyan-ink,#0e7490);--tk-navy:color-mix(in srgb, var(--tk-navy-core) 82%, var(--tk-cyan-ink));--tk-deep:color-mix(in srgb, var(--bt-color-core-navy-dark,#0b1220) 86%, var(--tk-cyan-ink));--tk-paper:color-mix(in srgb, var(--tk-navy-core) 7%, var(--bt-color-core-off-white,#f8fafc));--tk-white:#fff;--tk-on-dark:var(--bt-color-core-off-white,#f8fafc);--tk-line:var(--bt-color-derived-line,#e5e7eb);--tk-line-dark:var(--bt-color-derived-line-dark,#263042);--tk-ink:var(--bt-semantic-text,#111827);--tk-ink-muted:var(--bt-semantic-text-muted,#4b5563);--tk-font-display:"Alexandria", "TT Alexandria Fallback", sans-serif;--tk-font-body:inherit;--tk-tracking-display:-.035em;--tk-tracking-headline:-.025em;--tk-leading-display:1.02;--tk-leading-headline:1.1;--tk-ease:cubic-bezier(.22, 1, .36, 1);--tk-ease-out:cubic-bezier(.16, 1, .3, 1);--tk-duration:.7s;--tk-step:70ms;--tk-frame:76rem;--tk-gutter:clamp(1.25rem, 4vw, 2.5rem);--tk-radius-xs:.5rem;--tk-radius-sm:.75rem;--tk-radius:1.1rem;--tk-radius-lg:1.6rem;--tk-radius-xl:2.25rem}:root,.tkm-shell,.ac2-shell,.tkm-subject-root,.pf2-root{--tk-hairline:color-mix(in srgb, var(--th-ink,var(--tk-ink)) 11%, transparent);--tk-hairline-soft:color-mix(in srgb, var(--th-ink,var(--tk-ink)) 7%, transparent);--tk-tint-weak:color-mix(in srgb, var(--th-accent,var(--tk-cyan-ink)) 10%, transparent);--tk-tint:color-mix(in srgb, var(--th-accent,var(--tk-cyan-ink)) 20%, transparent);--tk-elev-1:0 1px 2px -1px color-mix(in srgb, var(--th-primary,var(--tk-navy)) 14%, transparent), 0 12px 26px -20px color-mix(in srgb, var(--th-primary,var(--tk-navy)) 55%, transparent);--tk-elev-2:0 2px 4px -2px color-mix(in srgb, var(--th-primary,var(--tk-navy)) 16%, transparent), 0 22px 44px -28px color-mix(in srgb, var(--th-primary,var(--tk-navy)) 60%, transparent);--tk-elev-3:0 4px 8px -4px color-mix(in srgb, var(--th-primary,var(--tk-navy)) 18%, transparent), 0 40px 70px -36px color-mix(in srgb, var(--th-primary,var(--tk-navy)) 65%, transparent)}img{block-size:auto;max-inline-size:100%}.tk-frame{inline-size:min(var(--tk-frame), calc(100% - 2 * var(--tk-gutter)));margin-inline:auto}.tk-band{content-visibility:auto;contain-intrinsic-block-size:auto 48rem;padding-block:clamp(3.25rem,6vw,5.5rem);position:relative}.tk-band+.tk-band:before{content:"";background:linear-gradient(to right, transparent, color-mix(in srgb, currentColor 13%, transparent) 15%, color-mix(in srgb, currentColor 13%, transparent) 85%, transparent);pointer-events:none;block-size:1px;position:absolute;inset-block-start:0;inset-inline:0}.tk-band--paper{color:var(--tk-ink);background:radial-gradient(78% 55% at 85% -8%, var(--tk-tint), transparent 68%), linear-gradient(0deg, var(--tk-tint-weak), var(--tk-tint-weak)), var(--tk-paper)}.tk-band--white{color:var(--tk-ink);background:radial-gradient(68% 50% at 12% -6%, 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62%);mask-image:linear-gradient(#000,#0000 62%)}.tk-band--paper>*,.tk-band--white>*,.tk-band--subject>*{z-index:1;position:relative}.tk-band--ink{color:var(--tk-on-dark);background:var(--tk-navy)}.tk-band--deep{color:var(--tk-on-dark);background:radial-gradient(120% 90% at 85% -10%, color-mix(in srgb, var(--tk-cyan) 14%, transparent), transparent 55%), var(--tk-deep)}.tk-band--subject{color:var(--th-ink,var(--tk-ink));background:radial-gradient(72% 55% at 50% -10%, var(--tk-tint), transparent 70%), linear-gradient(0deg, var(--tk-tint), var(--tk-tint)), color-mix(in srgb, var(--th-accent,var(--tk-cyan-ink)) 8%, var(--tk-paper))}.tk-band--subject-deep{color:var(--th-on-primary,#fff);background:radial-gradient(110% 85% at 12% 0%, color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 22%, transparent), transparent 58%), linear-gradient(160deg, var(--th-gradient-from,var(--tk-navy)), color-mix(in srgb, var(--th-gradient-to,var(--tk-deep)) 82%, #000 18%))}.tk-seam{background:linear-gradient(to var(--tk-seam-dir,right), var(--th-accent,var(--tk-cyan)), transparent 70%);block-size:1px;inline-size:100%;transform-origin:var(--tk-origin-start,left) center}[dir=rtl] .tk-seam{--tk-seam-dir:left;--tk-origin-start:right}.tk-panel{border-radius:var(--tk-radius);background:linear-gradient(180deg, color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 4%, transparent), transparent 45%), var(--th-surface-alt,var(--tk-white));box-shadow:inset 0 0 0 1px var(--tk-hairline), var(--tk-elev-1);position:relative}.tk-panel--raised{box-shadow:inset 0 0 0 1px var(--tk-hairline), var(--tk-elev-2)}.tk-panel--interactive{transition:transform .3s var(--tk-ease), box-shadow .3s var(--tk-ease)}.tk-panel--interactive:hover{box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 32%, transparent), var(--tk-elev-2);transform:translateY(-3px)}.tk-glass{border-radius:var(--tk-radius-lg);background:color-mix(in srgb, var(--th-surface-alt,#fff) 82%, transparent);-webkit-backdrop-filter:blur(18px)saturate(1.4);backdrop-filter:blur(18px)saturate(1.4);box-shadow:inset 0 0 0 1px #ffffff73, var(--tk-elev-3)}[dir=rtl]{--tk-tracking-display:0em;--tk-tracking-headline:0em;--tk-leading-display:1.45;--tk-leading-headline:1.4}[dir=rtl] .tk-display,[dir=rtl] .tk-headline{padding-block-end:.12em}.tk-display{font-family:var(--tk-font-display);font-size:clamp(2.75rem,7vw,5.75rem);font-weight:900;line-height:var(--tk-leading-display);letter-spacing:var(--tk-tracking-display);text-wrap:balance;margin:0}.tk-headline{font-family:var(--tk-font-display);font-size:clamp(2rem,4vw,3.4rem);font-weight:800;line-height:var(--tk-leading-headline);letter-spacing:var(--tk-tracking-headline);text-wrap:balance;margin:0}.tk-eyebrow{font-family:var(--tk-font-display);letter-spacing:.14em;text-transform:uppercase;color:color-mix(in srgb, var(--th-accent,var(--tk-cyan-ink)) 72%, currentColor);align-items:center;gap:.75rem;margin:0;font-size:.8rem;font-weight:700;display:inline-flex}.tk-band--ink .tk-eyebrow,.tk-band--deep .tk-eyebrow{color:color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 28%, var(--tk-on-dark))}[dir=rtl] .tk-eyebrow{letter-spacing:.02em}.tk-eyebrow:before{content:"";background:currentColor;block-size:2px;inline-size:2.25rem}.tk-lede{max-inline-size:46rem;color:color-mix(in srgb, currentColor 78%, transparent);margin:0;font-size:clamp(1.05rem,1.6vw,1.25rem);line-height:1.8}.tk-chapter-index{border:1px solid color-mix(in srgb, currentColor 30%, transparent);block-size:3rem;inline-size:3rem;font-family:var(--tk-font-display);font-variant-numeric:tabular-nums;border-radius:50%;place-items:center;font-size:.85rem;font-weight:800;display:grid}.tk-btn{text-align:center;cursor:pointer;min-block-size:2.9rem;transition:transform .25s var(--tk-ease), box-shadow .25s var(--tk-ease), background-color .25s var(--tk-ease);border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:.6rem;padding:.7rem 1.6rem;font-size:1rem;font-weight:700;line-height:1.25;text-decoration:none;display:inline-flex}.tk-btn:focus-visible{outline:2px solid var(--bt-semantic-focus-ring,#67e8f9);outline-offset:2px}.tk-btn--primary{color:var(--th-on-accent,#fff);background:var(--th-accent,var(--tk-cyan-ink));box-shadow:0 10px 28px -12px color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 65%, transparent)}.tk-btn--primary:hover{box-shadow:0 16px 34px -12px color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 75%, transparent);transform:translateY(-2px)}.tk-btn--ghost{color:inherit;border-color:color-mix(in srgb, currentColor 35%, transparent);background:0 0}.tk-btn--ghost:hover{border-color:currentColor;transform:translateY(-2px)}.tk-btn--inverse{color:var(--tk-navy);background:var(--tk-white)}.tk-btn--inverse:hover{transform:translateY(-2px);box-shadow:0 16px 34px -14px #ffffff73}.tk-reveal{opacity:0;transition:opacity var(--tk-duration) var(--tk-ease) var(--tk-delay,0s), translate var(--tk-duration) var(--tk-ease) var(--tk-delay,0s);translate:0 1.4rem}.tk-reveal.is-in{opacity:1;translate:0}.tk-reveal--clip{clip-path:inset(0 0 100%);transition:opacity var(--tk-duration) var(--tk-ease) var(--tk-delay,0s), clip-path calc(var(--tk-duration) * 1.15) var(--tk-ease-out) var(--tk-delay,0s);translate:0}.tk-reveal--clip.is-in{clip-path:inset(0 0 -8%)}.tk-reveal--seam{transition:scale calc(var(--tk-duration) * 1.4) var(--tk-ease-out) var(--tk-delay,0s), opacity .2s linear;translate:0;scale:0 1}.tk-reveal--seam.is-in{scale:1}@keyframes tk-hero-rise{0%{opacity:0;translate:0 2.2rem}to{opacity:1;translate:0}}@keyframes tk-drift{0%{background-position:0 0}to{background-position:120% 100%}}.tk-hero-enter{animation:tk-hero-rise .9s var(--tk-ease) both;animation-delay:var(--tk-delay,0s)}.tk-atmosphere{pointer-events:none;position:absolute;inset:0;overflow:hidden}.tk-atmosphere:before{content:"";opacity:.5;position:absolute;inset:-20%}.tk-atmosphere--waves:before{background:radial-gradient(55% 45% at 25% 30%, color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 22%, transparent), transparent 65%), radial-gradient(50% 55% at 80% 70%, color-mix(in srgb, var(--th-gradient-to,var(--tk-cyan-ink)) 26%, transparent), transparent 60%)}.tk-atmosphere--orbits:before{background:repeating-radial-gradient(circle at 70% 35%, transparent 0 56px, color-mix(in srgb, var(--th-accent,#4338ca) 22%, transparent) 56px 57px, transparent 57px 120px), radial-gradient(45% 45% at 70% 35%, color-mix(in srgb, var(--th-accent,#4338ca) 30%, transparent), transparent 70%)}.tk-atmosphere--molecules:before{background:radial-gradient(6px 6px at 22% 30%, color-mix(in srgb, var(--th-accent,#7c3aed) 55%, transparent) 45%, transparent 50%), radial-gradient(9px 9px at 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transparent), transparent 45%)}.tk-atmosphere--strata:before{background:repeating-linear-gradient(to bottom, color-mix(in srgb, var(--th-gradient-from,#0c4a6e) 14%, transparent) 0 34px, color-mix(in srgb, var(--th-accent,#047857) 12%, transparent) 34px 62px, transparent 62px 96px);-webkit-mask-image:linear-gradient(#0000 4%,#000 40%);mask-image:linear-gradient(#0000 4%,#000 40%)}.tk-atmosphere--none:before{background:0 0}@media (prefers-reduced-motion:no-preference){.tk-atmosphere--animated:before{animation:60s linear infinite alternate tk-drift}}.tk-grain:after{content:"";pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");position:absolute;inset:0}.tk-sr-only{clip-path:inset(50%);white-space:nowrap;block-size:1px;inline-size:1px;position:absolute;overflow:hidden}@media (pointer:coarse),(width<=47.99rem){.world-stage--hero .world-stage__atmosphere{display:none}}@media (prefers-reduced-motion:reduce){.tk-reveal,.tk-reveal--clip,.tk-reveal--seam{opacity:1;clip-path:none;transition:none;translate:none;scale:none}.tk-hero-enter{animation:none}.tk-btn,.tk-btn:hover,.tk-panel--interactive,.tk-panel--interactive:hover{transition:none;transform:none}.tk-atmosphere--animated:before{animation:none}}@media (forced-colors:active){.tk-btn{border-color:buttontext}.tk-seam{background:canvastext}.tk-panel,.tk-glass{border:1px solid 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var(--tk-line-dark);position:sticky;inset-block-start:0}.tkm-header__row{justify-content:space-between;align-items:center;gap:1.25rem;min-block-size:4.25rem;display:flex}.tkm-brand{color:inherit;align-items:center;gap:.7rem;text-decoration:none;display:inline-flex}.tkm-brand__mark{aspect-ratio:1;flex:none;block-size:2.25rem;inline-size:2.25rem}.tkm-footer .tkm-brand__mark{block-size:2rem;inline-size:2rem}.tkm-brand__word{font-family:var(--tk-font-display);letter-spacing:.01em;font-size:1.15rem;font-weight:900}.tkm-brand__sub{color:color-mix(in srgb, currentColor 62%, transparent);font-size:.68rem;font-weight:700;display:block}.tkm-nav{align-items:center;gap:1.6rem;display:none}.tkm-nav__link{min-block-size:2.75rem;color:color-mix(in srgb, var(--tk-on-dark) 82%, transparent);transition:color .2s var(--tk-ease);align-items:center;padding-block:.4rem;font-size:.95rem;font-weight:700;text-decoration:none;display:inline-flex;position:relative}.tkm-nav__link:after{content:"";background:var(--tk-cyan);transform-origin:50%;block-size:2px;transition:scale .25s var(--tk-ease);position:absolute;inset-block-end:.6rem;inset-inline:0;scale:0 1}.tkm-nav__link:hover,.tkm-nav__link[aria-current=page]{color:var(--tk-white)}.tkm-nav__link:hover:after,.tkm-nav__link[aria-current=page]:after{scale:1}.tkm-header__actions{align-items:center;gap:.9rem;display:none}.tkm-header__cta{min-block-size:2.75rem;padding:.5rem 1.25rem;font-size:.92rem}.tkm-locale{appearance:none;border:1px solid color-mix(in srgb, var(--tk-on-dark) 30%, transparent);min-block-size:2.75rem;min-inline-size:2.75rem;color:inherit;font:inherit;cursor:pointer;background:0 0;border-radius:999px;justify-content:center;align-items:center;padding:.42rem .95rem;font-size:.85rem;font-weight:700;display:inline-flex}.tkm-locale:hover{border-color:currentColor}.tkm-menu-toggle{border:1px solid color-mix(in srgb, var(--tk-on-dark) 28%, transparent);block-size:2.75rem;inline-size:2.75rem;color:inherit;cursor:pointer;background:0 0;border-radius:.75rem;justify-content:center;align-items:center;display:inline-flex}@media (width>=64rem){.tkm-nav,.tkm-header__actions{display:inline-flex}.tkm-menu-toggle{display:none}}.tkm-drawer{z-index:1100;justify-content:flex-end;display:flex;position:fixed;inset:0}.tkm-drawer__scrim{background:color-mix(in srgb, var(--tk-deep) 62%, transparent);cursor:pointer;border:0;padding:0;position:absolute;inset:0}.tkm-drawer__panel{inline-size:min(22rem,88vw);color:var(--tk-on-dark);background:var(--tk-deep);border-inline-start:1px solid var(--tk-line-dark);flex-direction:column;gap:1.5rem;padding:1.5rem;display:flex;position:relative;overflow-y:auto}[dir=rtl] .tkm-drawer{justify-content:flex-start}[dir=rtl] .tkm-drawer__panel{border-inline-start:0;border-inline-end:1px solid var(--tk-line-dark)}.tkm-drawer__head{justify-content:space-between;align-items:center;display:flex}.tkm-drawer__nav{flex-direction:column;gap:.25rem;display:flex}.tkm-drawer__link{color:color-mix(in srgb, var(--tk-on-dark) 88%, transparent);border-radius:.6rem;padding:.85rem .75rem;font-size:1.05rem;font-weight:700;text-decoration:none}.tkm-drawer__link:hover,.tkm-drawer__link[aria-current=page]{color:var(--tk-white);background:color-mix(in srgb, var(--tk-cyan) 14%, transparent)}.tkm-drawer__footer{flex-direction:column;gap:.9rem;margin-block-start:auto;display:flex}.tkm-footer{color:var(--tk-on-dark);background:var(--tk-deep);border-block-start:1px solid var(--tk-line-dark);padding-block:clamp(3rem,6vw,4.5rem) 2rem}.tkm-footer__grid{gap:2.25rem;display:grid}@media (width>=48rem){.tkm-footer__grid{grid-template-columns:1.4fr repeat(3,1fr)}}.tkm-footer__tagline{max-inline-size:26rem;color:color-mix(in srgb, 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transparent);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-block-start:2.5rem;padding-block-start:1.5rem;font-size:.85rem;display:flex}.tkm-main{outline:none;flex:1;scroll-margin-block-start:6rem}.tkm-hero{align-items:center;min-block-size:min(78dvh,40rem);padding-block:clamp(3.5rem,8vh,5rem);display:grid;position:relative;overflow:hidden}.tkm-hero__world{z-index:0;position:absolute;inset:0}@media (width<=48rem){.tkm-hero{block-size:36rem;min-block-size:36rem;padding-block:clamp(2.5rem,7vh,3.5rem)}}.tkm-hero__content{z-index:2;gap:1.15rem;max-inline-size:40rem;display:grid;position:relative}.tkm-hero .tk-display{max-inline-size:20ch;font-size:clamp(2.25rem,4.4vw,3.5rem)}[dir=rtl] .tkm-hero .tk-display{max-inline-size:22ch}.tkm-hero__lede{max-inline-size:34rem;font-size:clamp(1.02rem,1.3vw,1.15rem);line-height:1.7}.tkm-hero__actions{flex-wrap:wrap;gap:.9rem;margin-block-start:.35rem;display:flex}.tkm-hero__assurances{color:color-mix(in srgb, currentColor 74%, transparent);flex-wrap:wrap;gap:.5rem 1.4rem;margin:.35rem 0 0;padding:0;font-size:.88rem;font-weight:700;list-style:none;display:flex}.tkm-hero__assurances li{align-items:center;gap:.45rem;display:inline-flex}.tkm-hero__assurances svg{color:var(--th-accent,var(--tk-cyan));flex:none}.tkm-hero__foot{color:color-mix(in srgb, currentColor 68%, transparent);margin:.35rem 0 0;font-size:.9rem}.tkm-hero__cue{z-index:2;min-block-size:1.75rem;color:color-mix(in srgb, currentColor 62%, transparent);letter-spacing:.1em;text-transform:uppercase;align-items:center;gap:.6rem;font-size:.78rem;font-weight:700;text-decoration:none;display:inline-flex;position:absolute;inset-block-end:1.5rem;inset-inline-start:var(--tk-gutter)}[dir=rtl] .tkm-hero__cue{letter-spacing:.02em}.tkm-hero__cue:hover{color:inherit}.tkm-hero__cue svg{animation:tkm-cue-nudge 2.4s var(--tk-ease) infinite}@keyframes tkm-cue-nudge{0%,to{translate:0}50%{translate:0 .3rem}}@media (prefers-reduced-motion:reduce){.tkm-hero__cue svg{animation:none}}@media (width<=48rem){.tkm-hero__cue{display:none}}.tkm-atlas{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem;margin-block-start:clamp(2rem,5vw,3.5rem);display:grid}@media (width>=48rem){.tkm-atlas{grid-template-columns:repeat(6,minmax(0,1fr));grid-auto-rows:11.5rem}.tkm-atlas__tile:nth-child(6n+1),.tkm-atlas__tile:nth-child(6n+4){grid-area:span 2/span 3}.tkm-atlas__tile:nth-child(6n+2),.tkm-atlas__tile:nth-child(6n+5),.tkm-atlas__tile:nth-child(6n+3),.tkm-atlas__tile:nth-child(6n){grid-column:span 3}}.tkm-atlas__tile{min-block-size:11rem;color:var(--th-on-primary,#fff);background:linear-gradient(160deg, var(--th-gradient-from,var(--tk-navy)), var(--th-gradient-to,var(--tk-deep)));isolation:isolate;transition:transform .35s var(--tk-ease), box-shadow .35s 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62%);position:absolute;inset:0}.tkm-atlas__seam{background:var(--th-accent,var(--tk-cyan));block-size:2px;inline-size:2.5rem;transition:inline-size .35s var(--tk-ease);margin-block-end:.7rem}.tkm-atlas__tile:hover .tkm-atlas__seam{inline-size:4.25rem}.tkm-atlas__name{font-family:var(--tk-font-display);margin:0;font-size:1.2rem;font-weight:900;line-height:1.25}.tkm-atlas__latin{letter-spacing:.08em;text-transform:uppercase;color:color-mix(in srgb, currentColor 70%, transparent);margin:.15rem 0 0;font-size:.78rem;font-weight:700}.tkm-atlas__signature{max-inline-size:26rem;color:color-mix(in srgb, currentColor 80%, transparent);margin:.55rem 0 0;font-size:.85rem;line-height:1.55;display:none}@media (width>=48rem){.tkm-atlas__tile:nth-child(6n+1) .tkm-atlas__signature,.tkm-atlas__tile:nth-child(6n+4) .tkm-atlas__signature{display:block}}.tkm-chapters{gap:0;margin-block-start:clamp(2rem,5vw,3.25rem);display:grid}.tkm-chapter{border-block-start:1px solid color-mix(in srgb, currentColor 14%, 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.tk-chapter-index{z-index:1;background:var(--th-surface,var(--tk-paper));grid-area:1/1}.tkm-chapters--scientific .tkm-chapter h3{grid-column:2}.tkm-chapters--scientific .tkm-chapter p{grid-area:1/3}}.tk-band--white .tkm-chapters--scientific .tk-chapter-index{background:var(--th-surface-alt,var(--tk-white))}.tkm-chapters--math{max-inline-size:44rem;margin-inline-end:auto}.tkm-chapters--math .tkm-chapter{border-block-start:0;grid-template-columns:minmax(0,1fr);gap:.85rem;padding-block:clamp(1.5rem,3.5vw,2.25rem);padding-inline-start:3.25rem;position:relative}.tkm-chapters--math .tkm-chapter:before{content:"";background:color-mix(in srgb, var(--th-accent,currentColor) 40%, transparent);inline-size:1px;position:absolute;inset-block:.5rem -.5rem;inset-inline-start:1.5rem}.tkm-chapters--math .tkm-chapter:last-of-type:before{block-size:1.5rem;inset-block-end:auto}.tkm-chapters--math .tk-chapter-index{border-color:color-mix(in srgb, var(--th-accent,currentColor) 45%, 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h3{grid-area:2/1}.tkm-chapters--languages .tkm-chapter:nth-child(3) p{grid-area:1/2/-1}}.tkm-chapters--languages .tk-chapter-index{border-block-width:2px 0;border-inline-width:0;border-block-start-color:var(--th-accent,currentColor);border-radius:0;place-items:start;block-size:2.25rem;inline-size:2.5rem}.tkm-chapters--languages .tkm-chapter p{max-inline-size:38rem}@media (width>=60rem){.tkm-chapters--humanities{grid-template-columns:repeat(3,minmax(0,1fr));column-gap:clamp(1.75rem,3.5vw,3rem);padding-block-start:4.25rem;position:relative}.tkm-chapters--humanities:before{content:"";background:linear-gradient(to var(--tk-seam-dir,right), color-mix(in srgb, var(--th-accent,currentColor) 55%, transparent), color-mix(in srgb, currentColor 18%, transparent));block-size:1px;position:absolute;inset-block-start:1.5rem;inset-inline:0}.tkm-chapters--humanities .tkm-chapter{border-block-start:0;grid-template-columns:minmax(0,1fr);gap:.85rem;padding-block-start:0;position:relative}.tkm-chapters--humanities .tk-chapter-index{background:var(--th-surface,var(--tk-paper));position:absolute;inset-block-start:-4.25rem;inset-inline-start:0}.tk-band--white .tkm-chapters--humanities .tk-chapter-index{background:var(--th-surface-alt,var(--tk-white))}}.tkm-chapters--religious{text-align:center;gap:clamp(1.25rem,3vw,2rem);max-inline-size:52rem;margin-inline:auto}.tkm-chapters--religious .tkm-chapter{border:1px solid color-mix(in srgb, var(--th-accent,currentColor) 22%, transparent);background-image:linear-gradient(to right, var(--th-accent,currentColor) 0 100%), linear-gradient(to right, var(--th-accent,currentColor) 0 100%), linear-gradient(to right, var(--th-accent,currentColor) 0 100%), linear-gradient(to right, var(--th-accent,currentColor) 0 100%), linear-gradient(to right, var(--th-accent,currentColor) 0 100%), linear-gradient(to right, 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h3{font-size:clamp(1.3rem,2.4vw,1.75rem)}.tkm-chapters--studio{gap:clamp(1.5rem,3vw,2.25rem)}.tkm-chapters--studio .tkm-chapter{border:0;border-inline-start:3px solid var(--th-accent,var(--tk-cyan));background:color-mix(in srgb, var(--th-primary,currentColor) 5%, transparent);grid-template-columns:minmax(0,1fr);gap:.9rem;padding:clamp(1.5rem,3.5vw,2.25rem)}@media (width>=60rem){.tkm-chapters--studio .tkm-chapter{grid-template-rows:auto auto 1fr;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:start;column-gap:clamp(2rem,4vw,3.5rem);max-inline-size:54rem}.tkm-chapters--studio .tk-chapter-index{grid-area:1/1}.tkm-chapters--studio .tkm-chapter h3{grid-area:2/1}.tkm-chapters--studio .tkm-chapter p{grid-area:1/2/-1}.tkm-chapters--studio .tkm-chapter:nth-child(2){margin-inline-start:clamp(2rem,8vw,7rem)}.tkm-chapters--studio .tkm-chapter:nth-child(3){margin-inline-start:clamp(1rem,4vw,3.5rem)}}.tkm-chapters--studio 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0;font-size:.88rem;line-height:1.7}.tkm-teaser,.tkm-plans{gap:1.25rem;margin-block-start:clamp(2rem,5vw,3.25rem);display:grid}@media (width>=48rem){.tkm-teaser{grid-template-columns:repeat(3,minmax(0,1fr))}.tkm-plans{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width>=72rem){.tkm-plans{grid-template-columns:repeat(4,minmax(0,1fr))}}.tkm-plan{border:1px solid var(--tk-line);background:var(--tk-white);transition:transform .3s var(--tk-ease), box-shadow .3s var(--tk-ease);border-radius:1.2rem;flex-direction:column;gap:.85rem;padding:1.6rem;display:flex}.tkm-plan:hover{box-shadow:0 20px 40px -24px color-mix(in srgb, var(--tk-navy) 45%, transparent);transform:translateY(-4px)}.tkm-plan--recommended{border-color:var(--tk-cyan-ink);box-shadow:0 0 0 1px var(--tk-cyan-ink)}.tkm-plan__badge{background:color-mix(in srgb, var(--tk-cyan) 16%, transparent);color:var(--tk-cyan-ink);border-radius:999px;align-self:flex-start;margin:0;padding:.3rem 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dd{font-weight:700}.tkm-plan__features{flex-direction:column;gap:.55rem;margin:0;padding:0;font-size:.95rem;list-style:none;display:flex}.tkm-plan__features li{align-items:flex-start;gap:.55rem;display:flex}.tkm-plan__features svg{block-size:1.1rem;inline-size:1.1rem;color:var(--tk-cyan-ink);flex-shrink:0;margin-block-start:.2rem}.tkm-plan .tk-btn{margin-block-start:auto}.tkm-template-register{border-block-end:1px solid var(--tk-line);margin-block-start:clamp(2rem,5vw,3.5rem)}.tkm-template-register__row{border-block-start:1px solid var(--tk-line);color:var(--tk-ink);background:var(--tk-white);grid-template-columns:2.5rem minmax(9rem,14rem) minmax(0,1fr) minmax(10rem,.55fr);align-items:center;gap:clamp(1rem,3vw,2rem);padding-block:clamp(1.15rem,2.5vw,1.75rem);display:grid}.tkm-template-register__index,.tkm-template-register__mode{color:var(--tk-ink-muted);font-size:.78rem;font-weight:700}.tkm-template-register__row img{aspect-ratio:8/5;object-fit:cover;border:1px solid var(--tk-line);background:var(--tk-navy);block-size:auto;inline-size:100%}.tkm-template-register__row h3,.tkm-template-register__row p{margin:0}.tkm-template-register__row h3{font-family:var(--tk-font-display);font-size:clamp(1.2rem,2.2vw,1.6rem);font-weight:900}.tkm-template-register__row div>p{max-inline-size:46rem;color:var(--tk-ink-muted);margin-block-start:.45rem;line-height:1.75}.tkm-template-register__mode{max-inline-size:18rem;line-height:1.6}@media (width<=48rem){.tkm-template-register__row{grid-template-columns:2.25rem minmax(0,1fr)}.tkm-template-register__row img{grid-column:1/-1}.tkm-template-register__mode{grid-column:2}}.tkm-pricing__lede{max-inline-size:34rem;font-size:clamp(1.02rem,1.3vw,1.15rem);line-height:1.7}.tkm-pricing-choice{align-self:end}.tkm-pricing-guide{border-block-end:1px solid var(--tk-line);grid-template-columns:repeat(2,minmax(0,1fr));gap:0;max-inline-size:none;margin-block-start:clamp(1.75rem,4vw,2.75rem)}.tkm-pricing-guide p{border-block-start:1px 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var(--bt-semantic-focus-ring,#67e8f9);outline-offset:2px}.tkm-matrix{border-collapse:collapse;inline-size:100%;margin-block-start:clamp(1.75rem,4vw,2.5rem);font-size:.95rem}.tkm-matrix caption{clip-path:inset(50%);block-size:1px;inline-size:1px;position:absolute;overflow:hidden}.tkm-matrix th,.tkm-matrix td{border-block-end:1px solid var(--tk-line);text-align:start;padding:.85rem .75rem}.tkm-matrix thead th{border-block-end:2px solid var(--tk-navy);font-weight:700}.tkm-matrix td[data-included=yes] svg{color:var(--tk-cyan-ink)}.tkm-matrix td[data-included=no] svg{color:color-mix(in srgb, var(--tk-ink-muted) 55%, transparent)}.tkm-matrix svg{block-size:1.15rem;inline-size:1.15rem}.tkm-matrix-wrap{overflow-x:auto}.tkm-faq{gap:.8rem;max-inline-size:52rem;margin-block-start:clamp(1.75rem,4vw,2.5rem);display:grid}.tkm-faq details{border:1px solid var(--tk-line);background:var(--tk-white);border-radius:.9rem}.tkm-faq summary{cursor:pointer;padding:1.1rem 1.3rem;font-weight:700;list-style-position:inside}.tkm-faq summary:focus-visible{outline:2px solid var(--bt-semantic-focus-ring,#67e8f9);outline-offset:-2px;border-radius:.9rem}.tkm-faq details p{color:var(--tk-ink-muted);margin:0;padding:0 1.3rem 1.2rem;line-height:1.85}.tkm-objections{border-block-end:1px solid var(--tk-line);max-inline-size:58rem;margin-block-start:clamp(2rem,5vw,3.25rem)}.tkm-objections details{border-block-start:1px solid var(--tk-line)}.tkm-objections summary{cursor:pointer;padding-block:1.25rem;font-size:clamp(1.05rem,2vw,1.25rem);font-weight:800}.tkm-objections summary:focus-visible{outline:2px solid var(--bt-semantic-focus-ring,#67e8f9);outline-offset:4px}.tkm-objections p{max-inline-size:50rem;color:var(--tk-ink-muted);margin:0;padding-block-end:1.35rem;line-height:1.85}.tkm-section-head{gap:1rem;max-inline-size:48rem;display:grid}@media (width>=64rem){.tkm-section-head:has(>.tk-lede){grid-template-rows:auto;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);column-gap:clamp(2rem,4vw,4rem);max-inline-size:none}.tkm-section-head:has(>.tk-eyebrow):has(>.tk-lede){grid-template-rows:auto auto}.tkm-section-head:has(>.tk-lede)>.tk-lede{grid-area:1/2/-1;max-inline-size:34rem}.tkm-section-head:has(>.tk-eyebrow):has(>.tk-lede)>.tk-lede{align-self:end;padding-block-end:.35rem}.tkm-page-hero .tkm-section-head:has(>.tk-lede){grid-template-columns:none}.tkm-page-hero .tkm-section-head:has(>.tk-lede)>.tk-lede{grid-area:auto;max-inline-size:48rem;padding-block-end:0}}.tkm-prose{gap:1.1rem;max-inline-size:48rem;display:grid}.tkm-prose p{color:color-mix(in srgb, currentColor 84%, transparent);margin:0;font-size:1.02rem;line-height:1.95}.tkm-page-hero{padding-block:clamp(2.75rem,6vw,4.5rem)}.tkm-page-hero .tk-display{font-size:clamp(2.35rem,5vw,4rem)}.tkm-page-hero .tk-frame{gap:clamp(1.75rem,4vw,3rem);display:grid}.tkm-page-hero .tkm-section-head,.tkm-page-hero .tkm-prose{max-inline-size:none}.tkm-page-hero__body{grid-column:1/-1}@media (width>=64rem){.tkm-page-hero .tk-frame{grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);align-items:end}}.tkm-directory__principles-title{letter-spacing:.12em;text-transform:uppercase;color:var(--tk-cyan-ink);margin:clamp(2.5rem,5vw,3.5rem) 0 0;font-size:.8rem;font-weight:700}[dir=rtl] .tkm-directory__principles-title{letter-spacing:.02em}.tkm-directory__principles{gap:0;margin:1.25rem 0 0;display:grid}@media (width>=60rem){.tkm-directory__principles{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 2.5rem}}.tkm-directory__principles>div{border-block-start:1px solid var(--tk-line);padding-block:1.4rem}.tkm-directory__principles dt{margin:0 0 .5rem;font-size:1.1rem;font-weight:700}.tkm-directory__principles dd{color:var(--tk-ink-muted);margin:0;font-size:.97rem;line-height:1.85}.tkm-subject-hero{align-items:end;min-block-size:min(80dvh,42rem);padding-block:clamp(3.5rem,8vh,5.5rem);display:grid;position:relative;overflow:hidden}@media (width<=48rem){.tkm-subject-hero{min-block-size:min(70dvh,36rem);padding-block:clamp(2.5rem,7vh,3.5rem)}}.tkm-subject-hero__content{z-index:2;gap:1.15rem;max-inline-size:42rem;display:grid;position:relative}.tkm-subject-hero .tk-display{max-inline-size:18ch;font-size:clamp(2rem,3.9vw,3.1rem)}[dir=rtl] .tkm-subject-hero .tk-display{max-inline-size:20ch}.tkm-subject-hero__lede{max-inline-size:36rem;font-size:clamp(1rem,1.25vw,1.12rem);line-height:1.75}.tkm-subject-count{color:color-mix(in srgb, currentColor 70%, transparent);margin:.4rem 0 0;font-size:.92rem}.tkm-filter{border:1px solid var(--tk-line);background:var(--tk-white);border-radius:1.1rem;gap:1rem;padding:1.4rem;display:grid}.tkm-filter--hero{color:var(--tk-ink);box-shadow:0 24px 52px -38px color-mix(in srgb, var(--tk-deep) 70%, transparent)}@media (width>=48rem){.tkm-filter{grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;align-items:end}}.tkm-field{gap:.4rem;display:grid}.tkm-field__label{color:var(--tk-ink-muted);font-size:.85rem;font-weight:700}.tkm-field select,.tkm-field input{border:1px solid var(--tk-line);background:var(--tk-paper);min-block-size:2.9rem;font:inherit;color:inherit;border-radius:.7rem;padding:.6rem .9rem}.tkm-field select:focus-visible,.tkm-field input:focus-visible{outline:2px solid var(--bt-semantic-focus-ring,#67e8f9);outline-offset:1px}.tkm-filter__actions{flex-wrap:wrap;gap:.7rem;display:flex}.tkm-results-note{flex-wrap:wrap;align-items:baseline;gap:.75rem;margin-block:1.75rem 1rem;display:flex}.tkm-cards{border-block-end:1px solid var(--tk-line)}.tkm-teacher-card{border-block-start:1px solid var(--tk-line);transition:background-color .2s var(--tk-ease);grid-template-columns:2.5rem minmax(10rem,14rem) minmax(0,1fr);align-items:center;gap:clamp(1rem,3vw,2rem);padding-block:clamp(1rem,2.5vw,1.5rem);display:grid;position:relative}.tkm-teacher-card:hover{background:color-mix(in srgb, var(--th-accent,var(--tk-cyan)) 5%, transparent)}.tkm-teacher-card__index{color:var(--tk-ink-muted);align-self:start;padding-block-start:.2rem;font-size:.78rem;font-weight:700}.tkm-teacher-card__media{aspect-ratio:16/9;border:1px solid var(--tk-line);background:linear-gradient(150deg, var(--th-gradient-from,var(--tk-navy)), var(--th-gradient-to,var(--tk-deep)));position:relative;overflow:hidden}.tkm-teacher-card__media img{object-fit:cover;block-size:100%;inline-size:100%}.tkm-teacher-card__body{border-inline-start:3px solid var(--th-accent,var(--tk-cyan));flex-direction:column;gap:.5rem;padding-inline-start:clamp(.75rem,2vw,1.25rem);display:flex}.tkm-teacher-card__meta{color:var(--th-accent,var(--tk-cyan-ink));justify-content:space-between;gap:.75rem;margin:0;font-size:.82rem;font-weight:700;display:flex}.tkm-teacher-card h3{font-family:var(--tk-font-display);margin:0;font-size:1.15rem;font-weight:800}.tkm-teacher-card__tagline{color:var(--tk-ink-muted);margin:0;font-size:.92rem;line-height:1.7}.tkm-teacher-card__link{color:var(--th-accent,var(--tk-cyan-ink));margin-block-start:.4rem;font-size:.92rem;font-weight:700;text-decoration:none}.tkm-teacher-card__link:after{content:"";position:absolute;inset:0}.tkm-teacher-card__link:focus-visible{outline:none}.tkm-teacher-card:has(.tkm-teacher-card__link:focus-visible){outline:3px solid var(--bt-semantic-focus-ring,#67e8f9);outline-offset:2px}@media (width<=42rem){.tkm-teacher-card{grid-template-columns:2.25rem minmax(0,1fr)}.tkm-teacher-card__media{grid-column:1/-1}.tkm-teacher-card__body{grid-column:2}}.tkm-empty{border:1px dashed var(--tk-line);background:var(--tk-white);text-align:center;border-radius:1.1rem;justify-items:center;gap:.9rem;padding:clamp(2rem,5vw,3rem);display:grid}.tkm-empty h3{font-family:var(--tk-font-display);margin:0;font-size:1.25rem;font-weight:800}.tkm-empty p{max-inline-size:34rem;color:var(--tk-ink-muted);margin:0;line-height:1.8}.tkm-doc-masthead{padding-block:clamp(2.5rem,6vw,3.75rem)}.tkm-doc-masthead__grid{gap:clamp(2rem,4vw,3rem);display:grid}@media (width>=64rem){.tkm-doc-masthead__grid{grid-template-columns:minmax(0,1fr) 19rem;align-items:start}}.tkm-doc-masthead__main{align-content:start;gap:1.15rem;display:grid}.tkm-doc-masthead .tk-headline{max-inline-size:20ch}.tkm-doc-masthead__lede{max-inline-size:44rem;font-size:clamp(1rem,1.2vw,1.1rem)}.tkm-doc-record{border:1px solid var(--tk-line);background:var(--tk-white);gap:.5rem;padding:clamp(1.25rem,2.5vw,1.75rem);display:grid}.tkm-doc-record__title{border-block-start:2px solid var(--tk-navy);color:var(--tk-navy);font-family:var(--tk-font-display);letter-spacing:.08em;text-transform:uppercase;margin:0;padding-block-start:.85rem;font-size:.78rem;font-weight:800}[lang=ar] .tkm-doc-record__title{letter-spacing:0;text-transform:none}.tkm-doc-record__title:not(:first-child){margin-block-start:1rem}.tkm-doc-record__line{color:var(--tk-ink-muted);margin:0;font-size:.92rem;line-height:1.7}.tkm-doc-record__line strong{color:var(--tk-navy);font-variant-numeric:tabular-nums}.tkm-doc-record__progress{color:var(--tk-ink-muted);gap:.45rem;margin-block-start:.35rem;font-size:.78rem;line-height:1.5;display:grid}.tkm-doc-record__progress progress{background:var(--tk-line);block-size:.25rem;inline-size:100%;accent-color:var(--tk-cyan-ink);border:0}.tkm-doc-body{padding-block-start:clamp(2rem,4vw,3rem)}.tkm-document__grid{gap:2.5rem;margin-block-start:clamp(1rem,3vw,2rem);display:grid}@media (width>=64rem){.tkm-document__grid{grid-template-columns:16rem minmax(0,1fr);align-items:start}}.tkm-document__toc{border:1px solid var(--tk-line);background:var(--tk-white);padding:1rem 1.2rem}.tkm-document__toc-summary{min-block-size:2.75rem;color:var(--tk-navy);letter-spacing:.08em;text-transform:uppercase;cursor:pointer;justify-content:space-between;align-items:center;gap:.75rem;font-size:.82rem;font-weight:700;display:flex}[lang=ar] .tkm-document__toc-summary{letter-spacing:0;text-transform:none;font-size:.95rem}.tkm-document__toc-summary svg{flex:none;block-size:1.15rem;inline-size:1.15rem;transition:rotate .16s}.tkm-document__toc[open] .tkm-document__toc-summary svg{rotate:180deg}.tkm-document__toc-summary::-webkit-details-marker{display:none}.tkm-document__toc-list{gap:.15rem;margin-block-start:.75rem;display:grid}.tkm-document__toc-list a{min-block-size:2.75rem;color:var(--tk-ink-muted);border-inline-start:2px solid #0000;grid-template-columns:2rem minmax(0,1fr);align-content:center;align-items:baseline;gap:.5rem;padding-block:.5rem;padding-inline:.5rem;font-size:.9rem;line-height:1.4;text-decoration:none;display:grid}.tkm-document__toc-number{color:color-mix(in srgb, var(--tk-navy) 45%, transparent);font-variant-numeric:tabular-nums;font-size:.75rem;font-weight:700}.tkm-document__toc-list a:hover{color:var(--tk-cyan-ink);text-decoration:underline}.tkm-document__toc-list a[aria-current=true]{border-inline-start-color:var(--tk-cyan);color:var(--tk-navy);font-weight:700}.tkm-document__toc-list a[aria-current=true] .tkm-document__toc-number{color:var(--tk-cyan-ink)}@media (width>=64rem){.tkm-document__toc{border-width:0;border-inline-start:1px solid var(--tk-line);background:0 0;padding-block:0;padding-inline-end:0;position:sticky;inset-block-start:5.5rem}.tkm-document__toc-summary{display:none}.tkm-document__toc-list{margin-block-start:0}}.tkm-document__section{border-block-start:1px solid var(--tk-line);grid-template-columns:minmax(0,1fr);gap:.9rem;padding-block:clamp(1.75rem,3vw,2.5rem);scroll-margin-block-start:6rem;display:grid}@media (width>=48rem){.tkm-document__section{grid-template-columns:4rem minmax(0,1fr)}.tkm-document__section>:not(.tkm-document__section-number){grid-column:2}}.tkm-document__section-number{color:color-mix(in srgb, var(--tk-navy) 40%, transparent);font-variant-numeric:tabular-nums;letter-spacing:.08em;grid-row:1;margin:0;font-size:.85rem;font-weight:700}.tkm-document__section h2{font-family:var(--tk-font-display);color:var(--tk-navy);margin:0;scroll-margin-block-start:6rem;font-size:clamp(1.25rem,2.2vw,1.7rem);font-weight:800}.tkm-document__section p{max-inline-size:46rem;color:color-mix(in srgb, currentColor 82%, transparent);margin:0;line-height:1.9}.tkm-document__top-link{margin:1.75rem 0 0}.tkm-document__top-link a{min-block-size:2.75rem;color:var(--tk-cyan-ink);align-items:center;font-size:.92rem;font-weight:700;display:inline-flex}.tkm-document__nav{gap:.35rem;display:grid}.tkm-document__nav a{border:1px solid var(--tk-line);min-block-size:2.75rem;color:var(--tk-navy);align-items:center;padding-inline:.75rem;font-size:.92rem;font-weight:700;text-decoration:none;display:flex}.tkm-document__nav a:hover{border-color:var(--tk-cyan-ink);color:var(--tk-cyan-ink)}.tkm-document__nav a[aria-current=page]{color:var(--tk-white);background:var(--tk-cyan-ink);border-color:var(--tk-cyan-ink)}@media (prefers-reduced-motion:reduce){.tkm-document__toc-summary svg{transition:none}}.tkm-band-actions{flex-wrap:wrap;gap:.9rem;margin-block-start:1.75rem;display:flex}.tkm-final{text-align:center}.tkm-final .tkm-section-head,.tkm-final .tkm-band-actions{justify-content:center;justify-items:center;margin-inline:auto}@media (prefers-reduced-motion:reduce){.tkm-atlas__tile,.tkm-atlas__tile:hover,.tkm-plan,.tkm-plan:hover,.tkm-teacher-card,.tkm-teacher-card:hover,.tkm-atlas__poster img,.tkm-atlas__tile:hover .tkm-atlas__poster img{transition:none;transform:none}.tkm-nav__link:after{transition:none}}@media (forced-colors:active){.tkm-atlas__tile,.tkm-plan,.tkm-teacher-card{border:1px solid canvastext}}