:root{--bg: #f6f4ef;--bg-2: #efebe3;--surface: #ffffff;--surface-2: #fbfaf7;--ink: #15161a;--ink-2: #3f4048;--ink-3: #74747d;--ink-4: #a8a7ad;--rule: #e3dfd5;--rule-2: #d4cfc2;--accent: #a3192f;--accent-ink: #8c1427;--accent-soft: rgba(163, 25, 47, .075);--accent-line: rgba(163, 25, 47, .28);--ok: #1c7a4e;--ok-soft: rgba(28, 122, 78, .1);--err: #d0283a;--err-soft: rgba(208, 40, 58, .12);--gold: #b3862a;--navy: #1b2a44;--key: #ffffff;--key-edge: #d8d2c5;--key-low: #cbc4b5;--shadow-1: 0 1px 2px rgba(20, 18, 12, .05), 0 1px 1px rgba(20, 18, 12, .03);--shadow-2: 0 1px 2px rgba(20, 18, 12, .04), 0 12px 32px -12px rgba(20, 18, 12, .14);--shadow-3: 0 2px 4px rgba(20, 18, 12, .04), 0 30px 60px -24px rgba(20, 18, 12, .22);--serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, "TT Jomolhari", "TT Noto Tibetan", serif;--sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "TT Jomolhari", "TT Noto Tibetan", sans-serif;--mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, "TT Jomolhari", "TT Noto Tibetan", monospace;--bo: "TT Jomolhari", "TT Noto Tibetan", "Noto Serif Tibetan", "Microsoft Himalaya", serif;--bo-ui: "TT Noto Tibetan", "Noto Serif Tibetan", "TT Jomolhari", serif;--radius: 18px;--radius-sm: 10px;--wrap: 1200px;--gutter: 24px;--ease: cubic-bezier(.2, .7, .2, 1);color-scheme:light}:root[data-theme=dark]{--bg: #0c0d11;--bg-2: #111218;--surface: #15171e;--surface-2: #1a1c24;--ink: #efece5;--ink-2: #c9c6be;--ink-3: #8e8c88;--ink-4: #5d5c5d;--rule: #252731;--rule-2: #313441;--accent: #ec4d63;--accent-ink: #ff7b8d;--accent-soft: rgba(236, 77, 99, .12);--accent-line: rgba(236, 77, 99, .4);--ok: #4fc58c;--ok-soft: rgba(79, 197, 140, .13);--err: #ff5b69;--err-soft: rgba(255, 91, 105, .16);--gold: #e4b952;--navy: #9fb4dc;--key: #1e2029;--key-edge: #2c2f3b;--key-low: #0b0c10;--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 1px 2px rgba(0, 0, 0, .4), 0 16px 40px -16px rgba(0, 0, 0, .6);--shadow-3: 0 2px 4px rgba(0, 0, 0, .4), 0 30px 70px -24px rgba(0, 0, 0, .75);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}body.wt{margin:0;background:var(--bg);color:var(--ink-2);font:400 15.5px/1.6 var(--sans);font-feature-settings:"cv11","ss01";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;transition:background-color .3s var(--ease),color .3s var(--ease)}:where(.wt) :where(h1,h2,h3,h4,p,figure,dl,dd,ol,ul){margin:0;padding:0}:where(.wt) :where(ol,ul){list-style:none}:where(.wt) a{color:inherit;text-decoration:none}.wt button,.wt input,.wt select,.wt textarea{font:inherit;color:inherit}.wt button{cursor:pointer;background:none;border:0;padding:0}.wt code,.wt kbd{font-family:var(--mono);font-size:.88em}.wt :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}[lang=bo]{font-family:var(--bo);font-feature-settings:normal;line-height:1.9}.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.wrap{width:100%;max-width:calc(var(--wrap) + var(--gutter) * 2);margin:0 auto;padding:0 var(--gutter)}.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:var(--bg);padding:8px 14px;border-radius:8px}.skip:focus{top:12px}.wt [hidden]{display:none!important}.ico{width:18px;height:18px;display:inline-block;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}.wy{font-family:var(--mono);font-size:.9em;color:var(--accent-ink);background:var(--accent-soft);padding:.05em .35em;border-radius:5px;white-space:nowrap}.wt .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;font-weight:600;font-size:14.5px;letter-spacing:-.005em;border:1px solid var(--rule-2);background:var(--surface);color:var(--ink);transition:transform .15s var(--ease),background-color .2s,border-color .2s,box-shadow .2s,color .2s;white-space:nowrap}.wt .btn:hover{border-color:var(--ink-3)}.wt .btn:active{transform:translateY(1px) scale(.99)}.wt .btn--primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 1px #fff3 inset,0 8px 20px -8px var(--accent-line)}.wt .btn--primary:hover{background:var(--accent-ink);border-color:var(--accent-ink)}:root[data-theme=dark] .wt .btn--primary{color:#160509}.wt .btn--ghost{background:transparent}.wt .btn--sm{height:36px;padding:0 15px;font-size:13.5px}.wt .btn--xs{height:30px;padding:0 12px;font-size:12.5px}.wt .btn[disabled]{opacity:.45;pointer-events:none}.wt .btn kbd{font-size:11px;opacity:.7;font-weight:500;border:1px solid currentColor;border-radius:4px;padding:0 4px;line-height:15px}.wt .icon-btn{width:38px;height:38px;border-radius:999px;display:inline-grid;place-items:center;color:var(--ink-2);border:1px solid transparent;transition:background-color .2s,color .2s,border-color .2s}.wt .icon-btn:hover{background:var(--bg-2);color:var(--ink)}.wt .icon-btn[aria-expanded=true]{background:var(--bg-2);border-color:var(--rule)}.seg{display:inline-flex;max-width:100%;overflow-x:auto;scrollbar-width:none;padding:3px;gap:2px;background:var(--bg-2);border:1px solid var(--rule);border-radius:999px}.wt .seg button{height:30px;padding:0 13px;border-radius:999px;font-size:13px;font-weight:550;color:var(--ink-3);white-space:nowrap;transition:background-color .2s,color .2s,box-shadow .2s}.wt .seg button:hover{color:var(--ink)}.wt .seg button[aria-pressed=true],.wt .seg button[aria-selected=true]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-1)}:root[data-theme=dark] .wt .seg button[aria-pressed=true],:root[data-theme=dark] .wt .seg button[aria-selected=true]{background:var(--rule-2)}.eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 11.5px/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}.eyebrow em{font:italic 400 17px/1 var(--serif);letter-spacing:0;text-transform:none;color:var(--accent)}.eyebrow__dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.tb{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,background-color .3s}.tb.is-scrolled{border-bottom-color:var(--rule)}.tb__in{display:flex;align-items:center;gap:28px;height:64px}.tb__brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex:none}.tb__mark{width:30px;height:30px;border-radius:8px;background:var(--accent);color:#fff;display:grid;place-items:center;font:20px/1 var(--bo);padding-bottom:3px;box-shadow:0 6px 14px -6px var(--accent-line)}:root[data-theme=dark] .tb__mark{color:#160509}.tb__name{font:500 19px/1 var(--serif);letter-spacing:-.01em}.tb__name span{color:var(--ink-3);font-style:italic}.tb__nav{display:flex;gap:4px;margin-left:auto}.tb__nav a{font-size:14px;font-weight:500;color:var(--ink-2);padding:7px 12px;border-radius:999px;transition:background-color .2s,color .2s}.tb__nav a:hover{color:var(--ink);background:var(--bg-2)}.tb__nav a.is-on{color:var(--ink)}.tb__right{display:flex;align-items:center;gap:8px}.theme-ico--moon{display:none}:root[data-theme=dark] .theme-ico--sun{display:none}:root[data-theme=dark] .theme-ico--moon{display:inline-block}.hero{position:relative;padding:72px 0 96px;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 1px 1px,var(--rule-2) 1px,transparent 0);background-size:26px 26px;mask-image:radial-gradient(ellipse 70% 60% at 70% 40%,#000 0%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 70% 40%,#000 0%,transparent 75%);opacity:.55;pointer-events:none}.hero__in{position:relative;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6.2fr);gap:64px;align-items:center}.hero h1{font:400 clamp(46px,6.4vw,84px) / .98 var(--serif);letter-spacing:-.035em;color:var(--ink);margin:22px 0 26px}.hero h1 em{font-style:italic;color:var(--accent)}.hero__lede{font-size:17.5px;line-height:1.65;color:var(--ink-2);max-width:34em}.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.hero__facts{display:grid;grid-template-columns:repeat(4,auto);justify-content:start;gap:34px;margin-top:46px;padding-top:26px;border-top:1px solid var(--rule)}.hero__facts dt{font:400 34px/1 var(--serif);color:var(--ink);letter-spacing:-.02em}.hero__facts dd{margin-top:6px;font-size:12.5px;color:var(--ink-3);letter-spacing:.02em}.demo{position:relative;background:var(--surface);border:1px solid var(--rule);border-radius:26px;box-shadow:var(--shadow-3);padding:18px 22px 22px}.demo__top{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--ink-3);letter-spacing:.04em}.demo__count{margin-left:auto;font-variant-numeric:tabular-nums}.parts{display:flex;flex-wrap:wrap;gap:6px}.part{--c: var(--ink-3);display:inline-flex;flex-direction:column;align-items:center;min-width:46px;padding:5px 9px 6px;border-radius:10px;border:1px solid color-mix(in srgb,var(--c) 30%,transparent);background:color-mix(in srgb,var(--c) 7%,transparent);transition:opacity .25s,transform .25s var(--ease),background-color .25s}.part b{font:600 15px/1.2 var(--mono);color:var(--c)}.part small{font-size:9.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}.part.is-todo{opacity:.35}.part.is-cur{background:color-mix(in srgb,var(--c) 16%,transparent);transform:translateY(-2px)}.part[data-role=prefix]{--c: #2f6fb3}.part[data-role=super]{--c: #8a4fbf}.part[data-role=root]{--c: var(--accent)}.part[data-role=sub],.part[data-role=sub2]{--c: #1f8a73}.part[data-role=vowel],.part[data-role=avowel]{--c: #c27410}.part[data-role=suffix]{--c: #4b5bd1}.part[data-role=post]{--c: #9a6b3c}.part[data-role=achung]{--c: #6a7480}:root[data-theme=dark] .part[data-role=prefix]{--c: #6fa8e8}:root[data-theme=dark] .part[data-role=super]{--c: #b98ae6}:root[data-theme=dark] .part[data-role=sub],:root[data-theme=dark] .part[data-role=sub2]{--c: #4cc2a6}:root[data-theme=dark] .part[data-role=vowel],:root[data-theme=dark] .part[data-role=avowel]{--c: #f0a43c}:root[data-theme=dark] .part[data-role=suffix]{--c: #8d99ff}:root[data-theme=dark] .part[data-role=post]{--c: #d1a273}:root[data-theme=dark] .part[data-role=achung]{--c: #a7b0bb}.sec{padding:112px 0;border-top:1px solid var(--rule)}.sec--tint{background:var(--bg-2)}.sec__head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:end;margin-bottom:56px}.sec__head h2{font:400 clamp(36px,4.4vw,56px) / 1.02 var(--serif);letter-spacing:-.03em;color:var(--ink);margin-top:18px}.sec__head h2 em{font-style:italic;color:var(--accent)}.sec__head p{font-size:16.5px;color:var(--ink-2);max-width:34em}.rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:28px}.rule{background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius);padding:26px 26px 24px}.rule__n{font:italic 400 34px/1 var(--serif);color:var(--accent)}.rule h3{font:500 21px/1.25 var(--serif);color:var(--ink);margin:16px 0 10px;letter-spacing:-.01em}.rule p{font-size:14.5px}.rule__ex{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--rule-2);font-size:13px;color:var(--ink-3)}.rule__ex [lang=bo]{font-size:30px;line-height:1.5;color:var(--ink)}.anat{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);background:var(--surface);border:1px solid var(--rule);border-radius:24px;overflow:hidden;box-shadow:var(--shadow-2)}.anat__left{padding:32px;border-right:1px solid var(--rule);display:flex;flex-direction:column;gap:18px}.anat__left h3{font:500 24px/1.2 var(--serif);color:var(--ink);letter-spacing:-.01em}.anat__left>p{font-size:14.5px}.field{display:flex;align-items:center;gap:10px;height:52px;padding:0 8px 0 16px;border:1px solid var(--rule-2);border-radius:14px;background:var(--surface-2);transition:border-color .2s,box-shadow .2s}.field:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.field input:focus-visible{outline:0}.field input{flex:1;min-width:0;border:0;outline:0;background:transparent;font:500 19px var(--mono);color:var(--ink)}.field__bo{font-size:26px;line-height:1;color:var(--ink-3);padding:0 8px}.chips{display:flex;flex-wrap:wrap;gap:6px}.wt .chip{height:30px;padding:0 11px;border-radius:999px;border:1px solid var(--rule);background:var(--surface-2);font:500 13px var(--mono);color:var(--ink-2);transition:border-color .2s,color .2s,background-color .2s}.wt .chip:hover{border-color:var(--ink-3);color:var(--ink)}.wt .chip[aria-pressed=true]{border-color:var(--accent);color:var(--accent-ink);background:var(--accent-soft)}.anat__order{margin-top:auto}.anat__order-label{font-size:11px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}.anat__order .part{position:relative}.anat__order .part:before{content:attr(data-n);position:absolute;top:-7px;right:-6px;width:17px;height:17px;border-radius:50%;background:var(--ink);color:var(--bg);font:600 10px/17px var(--sans);text-align:center}.anat__right{padding:26px 32px 30px;display:grid;grid-template-columns:auto 1fr;gap:8px 40px;align-items:center;background:linear-gradient(var(--surface),var(--surface)) padding-box,radial-gradient(ellipse at 30% 50%,var(--accent-soft),transparent 70%)}.anat__word{text-align:center;min-width:170px}.anat__bo{font-size:104px;line-height:1.8;color:var(--ink)}.anat__gloss{font:italic 400 18px/1.3 var(--serif);color:var(--ink-2);min-height:24px}.anat__gloss small{display:block;margin-top:4px;font:400 12.5px var(--sans);color:var(--ink-3)}.anat__msg{grid-column:1 / -1;font-size:14px;color:var(--ink-3)}.wt{--sup-red: #d4142a}:root[data-theme=dark] .wt{--sup-red: #ff5468}.supers__title{font:600 15px var(--sans);color:var(--ink-2)}.supers__title b{font:400 20px/1 var(--bo-ui);color:var(--sup-red);margin-left:2px}.supers__stage{height:300px;margin:8px 0 10px}.supers__svg{display:block;height:100%;margin:0 auto}.supers__sup,.supers__root{transition:fill .14s ease-out}.supers__sup{fill:var(--sup-red)}.supers__root{fill:var(--ink)}.supers__tsheg,[data-phase=sup] .supers__root,[data-phase=root] .supers__sup{fill:var(--ink-4)}[data-phase=root] .supers__root,[data-phase=all] .supers__root{fill:var(--sup-red)}.supers__row{display:flex;flex-wrap:wrap;justify-content:center;gap:2px 4px;margin-bottom:18px}.wt .supers__row button{padding:2px 5px;border-radius:8px;font:26px/1.6 var(--bo);color:var(--ink-4);transition:color .2s}.wt .supers__row button:hover{color:var(--ink-2)}.wt .supers__row button[aria-current=true]{color:var(--ink)}.supers__foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}.wt .supers__tabs button{height:42px;padding:0 18px;color:var(--ink-2)}.supers__tabs [lang=bo]{display:block;font:22px/42px var(--bo)}.supers__credit{margin-top:14px;font-size:12px;color:var(--ink-3)}.xp{display:grid;grid-template-columns:repeat(5,auto);grid-template-rows:repeat(6,auto);justify-content:start;gap:6px 8px}.xp__slot{--c: var(--ink-3);width:84px;min-height:84px;border-radius:12px;border:1px solid color-mix(in srgb,var(--c) 34%,transparent);background:color-mix(in srgb,var(--c) 7%,var(--surface));display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4px 4px 7px;text-align:center;animation:rise .45s var(--ease) both}.xp__slot.is-empty{border-style:dashed;background:transparent;border-color:var(--rule-2);animation:none}.xp__slot.is-empty .xp__bo,.xp__slot.is-empty .xp__wy{visibility:hidden}.xp__slot.is-empty .xp__role{color:var(--ink-4)}.xp__bo{font:34px/1.45 var(--bo-ui);color:var(--c);height:50px}.xp__wy{font:600 12.5px/1 var(--mono);color:var(--ink)}.xp__role{margin-top:4px;font-size:9px;font-weight:650;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3);line-height:1.25}.xp__role span{display:block;font-family:var(--mono);letter-spacing:0;text-transform:none;font-weight:500;color:var(--ink-4);font-size:9.5px}.xp__slot[data-role=prefix]{--c: #2f6fb3}.xp__slot[data-role=super]{--c: #8a4fbf}.xp__slot[data-role=root]{--c: var(--accent);border-width:2px}.xp__slot[data-role=sub],.xp__slot[data-role=sub2]{--c: #1f8a73}.xp__slot[data-role=vowel],.xp__slot[data-role=avowel]{--c: #c27410}.xp__slot[data-role=suffix]{--c: #4b5bd1}.xp__slot[data-role=post]{--c: #9a6b3c}.xp__slot[data-role=achung]{--c: #6a7480}:root[data-theme=dark] .xp__slot[data-role=prefix]{--c: #6fa8e8}:root[data-theme=dark] .xp__slot[data-role=super]{--c: #b98ae6}:root[data-theme=dark] .xp__slot[data-role=sub],:root[data-theme=dark] .xp__slot[data-role=sub2]{--c: #4cc2a6}:root[data-theme=dark] .xp__slot[data-role=vowel],:root[data-theme=dark] .xp__slot[data-role=avowel]{--c: #f0a43c}:root[data-theme=dark] .xp__slot[data-role=suffix]{--c: #8d99ff}:root[data-theme=dark] .xp__slot[data-role=post]{--c: #d1a273}.marks{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin-top:28px}.mark{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:16px 16px 14px}.mark__keys{display:flex;align-items:center;gap:8px}.mark kbd{display:inline-grid;place-items:center;min-width:32px;height:32px;padding:0 8px;border-radius:8px;background:var(--key);border:1px solid var(--key-edge);box-shadow:0 2px 0 var(--key-low);font:600 14px var(--mono);color:var(--ink)}.mark__arrow{color:var(--ink-4)}.mark__bo{font-size:26px;line-height:1.3;color:var(--ink)}.mark p{margin-top:10px;font-size:12.5px;line-height:1.5;color:var(--ink-3)}.mark p b{color:var(--ink);font-weight:600}.units{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:start}.unit{position:relative;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius);padding:24px 24px 18px;display:flex;flex-direction:column;overflow:hidden;transition:box-shadow .3s var(--ease),transform .3s var(--ease),border-color .3s}.unit:hover{box-shadow:var(--shadow-2);border-color:var(--rule-2)}.unit__glyph{position:absolute;right:18px;top:2px;font-size:64px;line-height:1.7;color:var(--ink);opacity:.08;pointer-events:none;transition:opacity .3s,color .3s}.unit:hover .unit__glyph{opacity:.16;color:var(--accent)}.unit__top{display:flex;align-items:center;gap:10px;font-size:11.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}.unit__prog{margin-left:auto;font-variant-numeric:tabular-nums;letter-spacing:.04em;margin-right:64px}.unit h3{font:400 27px/1.15 var(--serif);color:var(--ink);letter-spacing:-.02em;margin:14px 0 4px}.unit__term{font-size:13px;color:var(--ink-3)}.unit__term [lang=bo]{font-size:15px;line-height:1;margin-right:6px;color:var(--ink-2)}.unit__blurb{font-size:14px;margin:12px 0 16px;color:var(--ink-2)}.unit__bar{height:3px;border-radius:3px;background:var(--bg-2);overflow:hidden;margin-bottom:10px}.unit__bar i{display:block;height:100%;width:0;background:var(--accent);border-radius:inherit;transition:width .6s var(--ease)}.unit__more summary{display:flex;align-items:center;justify-content:space-between;padding:10px 4px 4px;border-top:1px solid var(--rule);font-size:13px;font-weight:600;color:var(--ink-3);cursor:pointer;list-style:none;transition:color .2s}.unit__more summary::-webkit-details-marker{display:none}.unit__more summary:after{content:"";width:7px;height:7px;margin-right:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s var(--ease)}.unit__more[open] summary:after{transform:rotate(-135deg) translateY(-2px)}.unit__more summary:hover,.unit__more[open] summary{color:var(--ink)}.unit__more summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}.unit__more[open] summary{padding-bottom:8px}.lessons{border-top:1px solid var(--rule)}.wt .lesson{display:flex;align-items:center;gap:12px;width:100%;padding:9px 4px;border-bottom:1px solid var(--rule);text-align:left;font-size:14px;color:var(--ink-2);transition:color .2s,background-color .2s,padding .2s var(--ease)}.lessons li:last-child .lesson{border-bottom:0}.wt .lesson:hover{color:var(--ink);padding-left:9px;background:linear-gradient(90deg,var(--accent-soft),transparent 70%)}.lesson__id{font:500 12px var(--mono);color:var(--ink-3);width:30px;flex:none}.lesson__t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson.is-current .lesson__t{color:var(--accent-ink);font-weight:600}.stars{display:inline-flex;gap:1px;flex:none}.stars svg{width:13px;height:13px;fill:var(--rule-2)}.stars svg.on{fill:var(--gold)}.trainer{background:var(--surface);border:1px solid var(--rule);border-radius:28px;box-shadow:var(--shadow-3);overflow:hidden;position:relative}.tr-bar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;padding:14px 18px;border-bottom:1px solid var(--rule);background:var(--surface-2)}.tr-bar__right{margin-left:auto;display:flex;align-items:center;gap:8px}.tr-head{display:flex;align-items:center;gap:14px;padding:18px 22px 6px}.tr-head__txt{flex:1;min-width:0}.tr-head__kicker{font-size:11px;font-weight:650;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-3)}.tr-head h3{font:400 26px/1.2 var(--serif);color:var(--ink);letter-spacing:-.015em;margin-top:4px;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.tr-head h3 .lesson__id{font-size:14px;width:auto;color:var(--accent)}.tr-head__best{font-size:12.5px;color:var(--ink-3);display:flex;align-items:center;gap:10px;white-space:nowrap}.tr-stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));margin:12px 22px 0;border:1px solid var(--rule);border-radius:14px;overflow:hidden}.stat{padding:12px 16px 11px;border-right:1px solid var(--rule);min-width:0}.stat:last-child{border-right:0}.stat__k{font-size:10.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);display:flex;justify-content:space-between;gap:6px}.stat__k small{font-weight:500;letter-spacing:.02em;text-transform:none;color:var(--ink-4);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.stat__v{font:600 27px/1.15 var(--sans);font-variant-numeric:tabular-nums;letter-spacing:-.03em;color:var(--ink);margin-top:4px}.stat__v small{font-size:14px;font-weight:500;color:var(--ink-3);margin-left:2px;letter-spacing:0}.stat--wpm .stat__v{color:var(--accent)}.tr-progress{height:3px;margin:16px 22px 0;border-radius:3px;background:var(--bg-2);overflow:hidden}.tr-progress i{display:block;height:100%;width:0;background:var(--accent);transition:width .18s linear}.tr-screen{position:relative}.tr-stage{position:relative;margin:6px 0 0;padding:18px 22px 8px;cursor:text}.tr-window{--bo-size: 48px;--line: calc(var(--bo-size) * 1.95 + 30px);height:calc(var(--line) * 3.3);overflow:hidden;position:relative;mask-image:linear-gradient(#000 64%,transparent 98%);-webkit-mask-image:linear-gradient(#000 64%,transparent 98%)}.trainer[data-size=s] .tr-window{--bo-size: 34px}.trainer[data-size=l] .tr-window{--bo-size: 62px}.tr-text{display:flex;flex-wrap:wrap;align-content:flex-start;transition:transform .35s var(--ease);will-change:transform}.c{display:inline-flex;flex-direction:column;align-items:center;justify-content:flex-start;position:relative;height:var(--line);border-radius:12px;padding:0 3px}.c__bo{font-size:var(--bo-size);line-height:1.95;color:var(--ink);white-space:nowrap;transition:color .2s}.c__wy{font:500 15px/1 var(--mono);color:var(--ink-3);white-space:pre;margin-top:-4px;height:22px;display:flex}.c__wy i{font-style:normal;position:relative;padding:2px .5px 4px;border-radius:3px;transition:color .12s,background-color .12s}.c__wy i.sp{color:transparent;width:.55em}.c.is-done .c__bo,.c.is-done .c__wy{color:var(--ink-4)}.c.is-done.had-err:after{content:"";position:absolute;bottom:-6px;left:50%;width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--err)}.c.is-cur{background:var(--accent-soft)}.c.is-cur .c__bo,.c.is-cur .c__wy i.ok{color:var(--ink)}.c.is-cur .c__wy i.now{color:var(--accent-ink);background:var(--accent-soft)}.c.is-cur .c__wy i.now:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--accent);animation:blink 1.05s steps(1) infinite}.c.is-cur .c__wy i.now.sp{width:.9em}.c.is-cur .c__wy i.now.sp:before{content:"␣";position:absolute;inset:0;color:var(--accent);font-size:13px;text-align:center}.c.is-cur .c__wy i.now.miss{background:var(--err-soft);color:var(--err)}.c.is-shake{animation:shake .32s var(--ease)}.tr-over{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;padding:12px;background:color-mix(in srgb,var(--surface) 72%,transparent);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);animation:fade .25s var(--ease)}.tr-over[hidden]{display:none}.card{width:100%;max-width:780px;max-height:100%;overflow:auto;overscroll-behavior:contain;background:var(--surface);border:1px solid var(--rule);border-radius:22px;box-shadow:var(--shadow-3);padding:22px 28px 18px;animation:rise .35s var(--ease)}.card h4{font:400 30px/1.15 var(--serif);color:var(--ink);letter-spacing:-.02em;margin:8px 0 10px}.card__note{font-size:15px;color:var(--ink-2);max-width:44em}.card__row{display:flex;align-items:center;flex-wrap:wrap;gap:18px 28px;margin-top:20px}.card__label{font-size:10.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}.card__ex{display:flex;gap:20px;flex-wrap:wrap}.ex{text-align:center}.ex [lang=bo]{font-size:32px;line-height:1.6;color:var(--ink);display:block}.ex code{font-size:12.5px;color:var(--ink-3)}.keycaps{display:flex;gap:6px;flex-wrap:wrap}.keycap{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 9px;border-radius:8px;background:var(--key);border:1px solid var(--key-edge);box-shadow:0 2px 0 var(--key-low);font:600 14px var(--mono);color:var(--ink)}.card__actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--rule)}.card__actions .muted{margin-left:auto;font-size:12.5px;color:var(--ink-3)}.card textarea{width:100%;min-height:130px;resize:vertical;border:1px solid var(--rule-2);border-radius:14px;background:var(--surface-2);padding:14px 16px;font:15px/1.6 var(--mono);color:var(--ink);outline:0;margin-top:14px}.card textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.card__warn{margin-top:10px;font-size:13px;color:var(--err)}.wt .focus-msg{display:flex;align-items:center;gap:12px;padding:14px 22px;border-radius:999px;background:var(--ink);color:var(--bg);font-weight:600;font-size:14.5px;box-shadow:var(--shadow-3);animation:rise .3s var(--ease)}.res__top{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.res__stars{display:inline-flex;gap:4px}.res__stars svg{width:26px;height:26px;fill:var(--rule-2);animation:pop .5s var(--ease) both}.res__stars svg.on{fill:var(--gold)}.res__stars svg:nth-child(2){animation-delay:.12s}.res__stars svg:nth-child(3){animation-delay:.24s}.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:650;letter-spacing:.04em;background:color-mix(in srgb,var(--gold) 16%,transparent);color:color-mix(in srgb,var(--gold) 70%,var(--ink));border:1px solid color-mix(in srgb,var(--gold) 40%,transparent)}.res__nums{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:0;margin-top:18px;border:1px solid var(--rule);border-radius:16px;overflow:hidden}.res__nums>div{padding:11px 18px;border-right:1px solid var(--rule)}.res__nums>div:last-child{border-right:0}.res__nums b{display:block;font:600 30px/1.1 var(--sans);font-variant-numeric:tabular-nums;letter-spacing:-.03em;color:var(--ink);margin-top:4px}.res__nums .big b{font:400 46px/1 var(--serif);color:var(--accent);letter-spacing:-.03em}.res__nums small{font-size:13px;color:var(--ink-3);font-weight:500}.res__cols{display:grid;grid-template-columns:1fr 1.4fr;gap:28px;margin-top:18px}.missed{display:flex;flex-wrap:wrap;gap:8px}.missed .keycap{position:relative}.missed .keycap sup{position:absolute;top:-8px;right:-8px;min-width:18px;height:18px;padding:0 4px;border-radius:9px;background:var(--err);color:#fff;font:600 10px/18px var(--sans);text-align:center}.review{display:grid;gap:2px}.review li{display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:14px;padding:3px 0;border-bottom:1px solid var(--rule);font-size:13.5px}.review li:last-child{border-bottom:0}.review [lang=bo]{font-size:24px;line-height:1.6;color:var(--ink)}.review code{color:var(--accent-ink)}.review span{color:var(--ink-3);font-style:italic;font-family:var(--serif);font-size:15px}.empty-note{font-size:13.5px;color:var(--ink-3)}.tr-info{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr) minmax(0,1.4fr);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);margin-top:10px}.tr-info>div{padding:14px 22px;min-width:0}.tr-info>div+div{border-left:1px solid var(--rule)}.info__k{font-size:10.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:4px}.nowbox{display:flex;align-items:center;gap:14px;min-height:50px}.nowbox [lang=bo]{font-size:30px;line-height:1.6;color:var(--ink);white-space:nowrap}.now__txt{min-width:0}.now__en{font:italic 400 17px/1.25 var(--serif);color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.now__ph{font-size:12.5px;color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.now__ph code{color:var(--ink-2)}.compose{display:flex;align-items:center;gap:10px;min-height:50px}.compose code{font-size:15px;color:var(--ink);min-width:1ch}.compose__arrow{color:var(--ink-4)}.compose [lang=bo]{font-size:30px;line-height:1.6;color:var(--accent);min-width:1em}.tr-info .parts{min-height:50px;align-items:center}.tr-info .part{min-width:38px;padding:3px 7px 4px}.tr-info .part b{font-size:14px}.tr-info .part small{font-size:8.5px}.tr-foot{display:flex;align-items:center;flex-wrap:wrap;gap:8px 22px;padding:12px 22px 14px;background:var(--surface-2);font-size:12.5px;color:var(--ink-3)}.tr-foot__hint{color:var(--ink-2);font-weight:500;min-height:1.2em}.tr-foot__hint b{color:var(--accent-ink);font-family:var(--mono)}.tr-foot__keys{margin-left:auto;display:flex;gap:16px;flex-wrap:wrap}.tr-foot kbd{font-size:11px;padding:1px 6px;border-radius:5px;border:1px solid var(--rule-2);background:var(--surface);color:var(--ink-2);margin-right:4px}.caps-warn{color:var(--err);font-weight:600}.pop{position:absolute;right:14px;top:62px;z-index:20;width:330px;max-width:calc(100% - 28px);background:var(--surface);border:1px solid var(--rule);border-radius:18px;box-shadow:var(--shadow-3);padding:8px 16px;animation:rise .25s var(--ease)}.pop[hidden]{display:none}.pop__row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--rule);font-size:13.5px;font-weight:500;color:var(--ink-2)}.pop__row:last-child{border-bottom:0}.pop select{height:34px;border-radius:10px;border:1px solid var(--rule-2);background:var(--surface-2);padding:0 10px;font-size:13px;max-width:170px}.below{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:20px;margin-top:20px}.panel{background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius);padding:24px 26px}.panel__head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.panel h3{font:400 24px/1.2 var(--serif);color:var(--ink);letter-spacing:-.015em}.board{width:100%;border-collapse:collapse;font-size:14px}.board th{text-align:left;font-size:10.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding:0 8px 8px;border-bottom:1px solid var(--rule)}.board td{padding:9px 8px;border-bottom:1px solid var(--rule);font-variant-numeric:tabular-nums;color:var(--ink-2)}.board tr:last-child td{border-bottom:0}.board td:first-child{font:italic 400 18px var(--serif);color:var(--ink-3);width:40px}.board tr.is-top td:first-child{color:var(--gold)}.board .w-wpm{font-weight:650;color:var(--ink)}.board tr.is-new td{background:var(--accent-soft)}.board .empty{text-align:center;color:var(--ink-3);padding:26px 8px;font-style:italic;font-family:var(--serif);font-size:16px}.log{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px solid var(--rule);border-radius:14px;overflow:hidden}.log>div{padding:14px 16px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}.log>div:nth-child(2n){border-right:0}.log>div:nth-last-child(-n+2){border-bottom:0}.log b{display:block;font:600 24px/1.2 var(--sans);font-variant-numeric:tabular-nums;letter-spacing:-.02em;color:var(--ink)}.log span{font-size:12px;color:var(--ink-3)}.weak{margin-top:18px}.weak__list{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}.panel__foot{margin-top:18px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3)}.wt .link-btn{color:var(--ink-3);text-decoration:underline;text-underline-offset:3px;font-size:12.5px}.wt .link-btn:hover{color:var(--err)}.ref{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px}.ref__card{background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius);padding:26px 26px 24px}.ref__card h3{font:400 24px/1.2 var(--serif);color:var(--ink);letter-spacing:-.015em}.ref__card>p{font-size:14px;margin:6px 0 18px;color:var(--ink-3)}.span-7{grid-column:span 7}.span-5{grid-column:span 5}.span-6{grid-column:span 6}.span-12{grid-column:span 12}.alpha{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--rule);border-left:1px solid var(--rule)}.alpha>div{border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);text-align:center;padding:2px 4px 10px;position:relative}.alpha [lang=bo]{font-size:40px;line-height:1.7;color:var(--ink);display:block}.alpha code{font-size:13px;color:var(--accent-ink)}.alpha small{position:absolute;top:6px;left:8px;font-size:10px;color:var(--ink-4);font-variant-numeric:tabular-nums}.vowels{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.vowels>div{border:1px solid var(--rule);border-radius:12px;text-align:center;padding:4px 6px 12px}.vowels [lang=bo]{font-size:40px;line-height:1.8;color:var(--ink);display:block}.vowels code{color:var(--accent-ink);font-size:13px}.vowels small{display:block;font-size:12px;color:var(--ink-3);margin-top:2px}.tbl{width:100%;border-collapse:collapse;font-size:14px}.tbl th,.tbl td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--rule);vertical-align:middle}.tbl th{font-size:10.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}.tbl tr:last-child td{border-bottom:0}.tbl td [lang=bo]{font-size:22px;line-height:1.5;color:var(--ink)}.tbl td code{color:var(--accent-ink)}.tbl td:first-child{color:var(--ink);font-weight:550}.stacks{display:grid;gap:14px}.stacks__row{display:grid;grid-template-columns:112px minmax(0,1fr);gap:14px;align-items:center;padding-bottom:12px;border-bottom:1px solid var(--rule)}.stacks__row:last-child{border-bottom:0;padding-bottom:0}.stacks__name{font-size:13px;color:var(--ink);font-weight:600}.stacks__name small{display:block;font-weight:400;color:var(--ink-3);font-family:var(--mono);font-size:11.5px}.stacks__set{display:flex;flex-wrap:wrap;gap:4px 6px}.stk{display:inline-flex;flex-direction:column;align-items:center;min-width:46px;padding:0 4px 4px;border-radius:8px;background:var(--surface-2);border:1px solid var(--rule)}.stk [lang=bo]{font-size:26px;line-height:1.75;color:var(--ink)}.stk code{font-size:11px;color:var(--ink-3);margin-top:-4px}.sources{display:grid;gap:12px;font-size:14px}.sources li{padding-left:18px;position:relative}.sources li:before{content:"";position:absolute;left:0;top:.65em;width:7px;height:1px;background:var(--ink-3)}.sources cite{font-style:italic;font-family:var(--serif);font-size:15.5px;color:var(--ink)}.sources a{color:var(--accent-ink);text-decoration:underline;text-decoration-color:var(--accent-line);text-underline-offset:3px}.foot{border-top:1px solid var(--rule);padding:44px 0 56px;font-size:13px;color:var(--ink-3)}.foot__in{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}.foot__brand{font:400 22px/1.2 var(--serif);color:var(--ink)}.foot__brand [lang=bo]{font-size:22px;margin-left:10px;color:var(--ink-3);line-height:1}.foot p{max-width:46em;margin-top:8px}.foot a{color:var(--ink-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--rule-2)}.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}.reveal.is-in{opacity:1;transform:none}@keyframes blink{50%{opacity:0}}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}}@keyframes shake{20%{transform:translate(-3px)}45%{transform:translate(3px)}70%{transform:translate(-2px)}}@keyframes pop{0%{transform:scale(.4);opacity:0}70%{transform:scale(1.15)}to{transform:scale(1);opacity:1}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}@media(max-height:900px)and (min-width:641px){.tr-window{--bo-size: 42px;height:calc(var(--line) * 3.1)}.trainer[data-size=l] .tr-window{--bo-size: 54px}.trainer[data-size=s] .tr-window{--bo-size: 32px}.tr-stats .stat{padding:9px 14px 8px}.stat__v{font-size:23px}.tr-info>div{padding:10px 22px}}@media(max-width:1100px){.hero__in{grid-template-columns:1fr;gap:48px}.hero{padding-top:48px}.units{grid-template-columns:repeat(2,minmax(0,1fr))}.marks{grid-template-columns:repeat(3,minmax(0,1fr))}.anat{grid-template-columns:minmax(0,1fr)}.anat__left{border-right:0;border-bottom:1px solid var(--rule)}.span-7,.span-5,.span-6{grid-column:span 12}}@media(max-width:900px){.tb__nav{display:none}.tb__right{margin-left:auto}.sec{padding:80px 0}.sec__head{grid-template-columns:1fr;gap:16px;margin-bottom:36px}.rules{grid-template-columns:1fr}.tr-info{grid-template-columns:1fr 1fr}.tr-info>div:last-child{grid-column:1 / -1;border-left:0;border-top:1px solid var(--rule)}.below{grid-template-columns:minmax(0,1fr)}.res__cols{grid-template-columns:1fr}.anat__right{grid-template-columns:minmax(0,1fr);justify-items:center}}@media(max-width:640px){:root{--gutter: 16px}body.wt{font-size:15px}.tb__in{height:58px;gap:12px}.tb__name span{display:none}.hero{padding:36px 0 64px}.hero__lede{font-size:16px}.hero__facts{grid-template-columns:repeat(2,auto);gap:20px 40px}.demo{padding:14px 12px;border-radius:20px}.supers__stage{height:210px}.units{grid-template-columns:1fr}.marks{grid-template-columns:repeat(2,minmax(0,1fr))}.anat__left,.anat__right{padding:22px 18px}.anat__bo{font-size:80px}.xp__slot{width:58px;min-height:70px}.xp__bo{font-size:26px;height:40px}.xp__role span{display:none}.xp__role{font-size:7.5px}.trainer{border-radius:20px}.tr-bar{padding:10px 12px}.tr-bar .seg button{padding:0 10px;font-size:12.5px}.tr-head{padding:14px 14px 4px}.tr-head h3{font-size:21px}.tr-head__best{display:none}.tr-stats{grid-template-columns:repeat(3,minmax(0,1fr));margin:10px 14px 0}.stat{padding:9px 11px}.stat__v{font-size:21px}.stat:nth-child(n+4){display:none}.stat:nth-child(3){border-right:0}.stat__k small{display:none}.tr-progress{margin:12px 14px 0}.tr-stage{padding:14px 14px 6px}.tr-window{--bo-size: 34px}.trainer[data-size=l] .tr-window{--bo-size: 44px}.trainer[data-size=s] .tr-window{--bo-size: 28px}.c__wy{font-size:13px}.tr-info{grid-template-columns:1fr}.tr-info>div+div{border-left:0;border-top:1px solid var(--rule)}.tr-info>div{padding:10px 14px}.tr-info>div:nth-child(2){display:none}.tr-foot__keys{display:none}.card{padding:20px 18px 18px;border-radius:18px}.card h4{font-size:24px}.res__nums{grid-template-columns:repeat(2,1fr)}.res__nums>div:nth-child(2){border-right:0}.res__nums>div:nth-child(-n+2){border-bottom:1px solid var(--rule)}.res__nums .big b{font-size:42px}.panel,.ref__card,.unit{padding:20px 18px}.alpha [lang=bo]{font-size:32px}.stacks__row{grid-template-columns:1fr;gap:6px}}.learn{padding:104px 0;border-top:1px solid var(--rule);background:var(--bg-2)}.learn__in{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);grid-template-areas:"card copy";gap:64px;align-items:center}.learn__copy{grid-area:copy}.learn__card{grid-area:card}.learn__title{font:400 clamp(36px,4.4vw,56px) / 1.02 var(--serif);letter-spacing:-.03em;color:var(--ink);margin:18px 0 20px}.learn__title em{font-style:italic;color:var(--accent)}.learn__lede{font-size:16.5px;line-height:1.65;color:var(--ink-2);max-width:32em;margin-bottom:28px}.learn__letters{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:6px;max-width:520px}.wt .learn__letters button{aspect-ratio:1;display:grid;place-items:center;border:1px solid var(--rule);border-radius:10px;background:var(--surface);font:22px/1 var(--bo);color:var(--ink-3);padding:0 0 4px;transition:color .2s,border-color .2s,background .2s}.wt .learn__letters button:hover{color:var(--ink);border-color:var(--rule-2)}.wt .learn__letters button[aria-current=true]{color:var(--accent-ink);border-color:var(--accent-line);background:var(--accent-soft)}.learn__now{display:flex;align-items:baseline;gap:8px;font-size:13px;color:var(--ink-2);letter-spacing:.02em}.learn__now b{font:400 24px/1 var(--bo);color:var(--ink)}.learn__paper{margin-top:12px;background:#fff;border-radius:16px;overflow:hidden;display:grid;place-items:center}.learn__video{display:block;width:100%;max-width:560px;aspect-ratio:1;height:auto}.learn__foot{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:16px}.learn__play{min-width:112px;justify-content:center}@media(max-width:900px){.learn{padding:72px 0}.learn__in{grid-template-columns:1fr;grid-template-areas:"copy" "card";gap:36px}.learn__letters{max-width:none}}@media(max-width:640px){.learn__letters{grid-template-columns:repeat(6,minmax(0,1fr))}}