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10px);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--shadow-2);min-width:220px;padding:6px;z-index:50;display:flex;flex-direction:column;transform-origin:top right;animation:popIn .18s var(--ease)}.menu a,.menu button{display:block;text-align:left;padding:10px 12px;border-radius:10px;text-decoration:none;color:var(--ink);background:none;border:0;font:inherit;font-size:14.5px;font-weight:500;cursor:pointer}.menu a:hover,.menu button:hover{background:var(--surface-2)}.menu .who{padding:8px 12px 10px;border-bottom:1px solid var(--line-2);margin-bottom:4px;font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis}@keyframes popIn{0%{opacity:0;transform:translateY(-4px) scale(.97)}to{opacity:1;transform:none}}@media(max-width:1060px){.top-in{flex-wrap:wrap;gap:8px 12px;padding:10px 16px}.nav{order:3;width:calc(100% + 32px);margin:0 -16px;padding:0 12px 2px;overflow-x:auto;scrollbar-width:none}.nav::-webkit-scrollbar{display:none}.search-btn{min-width:0;padding:9px}.search-btn span,.search-btn kbd{display:none}.jdk>span{display:none}.acct-name{display:none}.acct-btn{padding:3px}}.foot{margin-top:72px;border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:14.5px}.foot-grid{max-width:1200px;margin:0 auto;padding:44px 24px 20px;display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:28px}.foot-brand p{margin:12px 0 0;max-width:34ch;line-height:1.6}.foot h2{font-family:var(--sans);font-size:14px;font-weight:750;letter-spacing:0;color:var(--ink);margin:4px 0 12px}.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}.foot a{color:var(--muted);text-decoration:none}.foot a:hover{color:var(--blue)}.foot-base{max-width:1200px;margin:0 auto;padding:16px 24px 28px;border-top:1px solid var(--line-2);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13.5px}@media(max-width:900px){.foot-grid{grid-template-columns:repeat(2,1fr)}.foot-brand{grid-column:1/-1}}.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.04fr);gap:56px;align-items:center;padding:56px 0 40px}.hero h1{font-size:clamp(2.7rem,5.6vw,4.7rem);line-height:1.02;letter-spacing:-.045em;font-weight:780;margin:0 0 22px;max-width:13ch;font-variation-settings:"opsz" 96}.lede{font-size:clamp(1.06rem,1.5vw,1.22rem);color:var(--ink-2);max-width:48ch;margin:0 0 30px;line-height:1.6}.cta{display:flex;flex-wrap:wrap;gap:12px}.hero-note{margin:20px 0 0;font-size:14.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 18px;padding:0;list-style:none}.hero-note li{display:inline-flex;align-items:center;gap:7px}.hero-note li:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--moss)}.codewin{margin:0;min-width:0;position:relative;background:var(--night);border-radius:var(--r-l);box-shadow:0 34px 70px -34px #0e1633b3;color:#dce4f5;overflow:hidden;isolation:isolate}.codewin:before{content:"";position:absolute;inset:-45% -25% auto auto;width:75%;height:95%;background:radial-gradient(closest-side,rgba(36,70,232,.5),transparent);pointer-events:none;z-index:-1}.codewin:after{content:"";position:absolute;inset:auto auto -50% -20%;width:65%;height:85%;background:radial-gradient(closest-side,rgba(255,107,26,.26),transparent);pointer-events:none;z-index:-1}.cw-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px 12px;border-bottom:1px solid var(--night-line);flex-wrap:wrap}.cw-file{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:13px;color:#aeb9d6}.cw-file i{width:10px;height:10px;border-radius:3px;background:var(--ember-fill)}.vtabs{position:relative;display:flex;gap:2px;background:#ffffff12;border-radius:10px;padding:3px}.vtabs button{position:relative;z-index:1;border:0;background:transparent;color:#aeb9d6;font-weight:750;font-size:13.5px;padding:5px 0;border-radius:8px;cursor:pointer;width:40px;transition:color .2s}.vtabs button:hover{color:#fff}.vtabs button[aria-pressed=true]{color:#0e1633}.vtabs .thumb{position:absolute;top:3px;bottom:3px;left:3px;width:40px;border-radius:8px;background:#fff;transform:translate(calc(var(--i,0) * 42px));transition:transform .35s var(--ease);z-index:0}.cw-body{padding:16px 0 18px;min-height:300px;font-family:var(--mono);font-size:13.5px;line-height:1.75;overflow-x:auto}.cw-line{display:flex;padding:0 18px 0 0;border-left:3px solid transparent;animation:lineIn .4s var(--ease) both;animation-delay:calc(var(--n) * 28ms);white-space:pre}.cw-line.changed{background:#ff6b1a21;border-left-color:var(--ember-fill)}.cw-ln{width:44px;flex:none;text-align:right;padding-right:16px;color:#55618a;-webkit-user-select:none;user-select:none}@keyframes lineIn{0%{opacity:0;transform:translate(-6px)}to{opacity:1;transform:none}}.cw-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px 16px;border-top:1px solid var(--night-line);background:#ffffff08}.cw-foot p{margin:0;font-size:14.5px;color:#dce4f5;max-width:44ch}.cw-foot strong{color:#fff}.cw-foot .is-mine{color:#7ce3c4;font-size:14px;font-weight:650}.cw-line .tk{color:#8ab4ff}.cw-line .ts{color:#ffc98b}.cw-line .tc{color:#6a77a0}.cw-line .ta{color:#ff9d66}.cw-line .tn{color:#b6e28c}.cw-line .tt{color:#7fe0d6}.sec{padding:72px 0 8px}.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 26px}.sec-head h2{font-size:clamp(1.9rem,3.2vw,2.7rem);letter-spacing:-.035em;margin:0 0 8px;line-height:1.06}.sec-head .sub{color:var(--ink-2);margin:0;max-width:60ch;font-size:16.5px}.ruler-sec{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:24px 0 22px;box-shadow:var(--shadow-1)}.ruler-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 24px;padding:0 26px}.ruler-head h2{margin:0;font-size:1.4rem;letter-spacing:-.025em}.legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px;color:var(--muted);font-weight:500}.legend i{display:inline-block;width:12px;height:12px;border-radius:4px;vertical-align:-1px;margin-right:6px}.ruler-scroll{overflow-x:auto;padding:42px 26px 34px;scrollbar-width:thin}.ruler{display:flex;align-items:flex-end;min-width:max-content;border-bottom:2px solid var(--ink);margin:0 auto;width:max-content}.tick{position:relative;width:40px;flex:none;height:62px;border:0;background:transparent;padding:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;cursor:pointer;border-radius:6px 6px 0 0;transition:background .2s}.tick.old{cursor:default}.tick:before{content:"";width:2px;height:18px;background:var(--line);display:block;transform-origin:bottom;animation:rise .7s var(--ease) both;animation-delay:calc(var(--i) * 22ms);transition:height .25s var(--ease)}button.tick:hover:before{height:26px}.tick.lts:before{height:36px;width:4px;border-radius:2px 2px 0 0;background:var(--ember-fill)}button.tick.lts:hover:before{height:44px}.tick.avail{background:var(--blue-soft)}.tick.avail:not(.lts):before{background:var(--blue)}.tick.planned:before{background:transparent;border-left:2px dashed var(--line);width:0}.tick .lbl{position:absolute;top:calc(100% + 8px);font-size:12.5px;font-weight:650;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.tick.lts .lbl{color:var(--ember)}.tick.old .lbl{opacity:.65}.tick.sel .lbl{color:var(--ink);font-weight:800}.tick .pin{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);background:var(--ink);color:var(--bg);font-size:12px;padding:3px 10px;border-radius:999px;white-space:nowrap;font-weight:750}.tick .pin:after{content:"";position:absolute;left:50%;top:100%;transform:translate(-50%);border:5px solid transparent;border-top-color:var(--ink)}@keyframes rise{0%{transform:scaleY(0)}to{transform:scaleY(1)}}.ruler.still .tick:before{animation:none}.readout{padding:0 26px;font-size:1.02rem;color:var(--ink-2);max-width:90ch;margin:0}.readout strong{color:var(--ink)}.track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,1fr);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 18px;scrollbar-width:thin;scroll-behavior:smooth}.stage{scroll-snap-align:start;display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:20px;text-decoration:none;color:var(--ink);transition:border-color .2s,transform .25s var(--ease),box-shadow .25s}.stage:hover{border-color:var(--blue);transform:translateY(-3px);box-shadow:var(--shadow-2);color:var(--ink)}.stage h3{margin:4px 0 0;font-size:1.2rem;letter-spacing:-.02em;line-height:1.2}.stage p{margin:0;color:var(--ink-2);font-size:14.5px;line-height:1.5}.stage .meta{margin-top:auto;font-size:13.5px;color:var(--muted);font-weight:550}.ring{width:46px;height:46px;border-radius:50%;background:conic-gradient(var(--moss) calc(var(--p) * 1%),var(--surface-3) 0);display:grid;place-items:center;flex:none}.ring span{width:38px;height:38px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-family:var(--display);font-weight:800;font-size:17px;font-variant-numeric:tabular-nums}.track-btns{display:flex;gap:8px}.bento{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:24px;display:flex;flex-direction:column;gap:12px;overflow:hidden;min-width:0}.tile h3{margin:0;font-size:1.28rem;letter-spacing:-.02em}.tile>p{margin:0;color:var(--ink-2);font-size:15px}.tile a.more{margin-top:auto;font-weight:650;font-size:14.5px;text-decoration:none}.tile a.more:hover{text-decoration:underline}.span-4{grid-column:span 4}.span-3{grid-column:span 3}.span-2{grid-column:span 2}.tile.dark{background:var(--night);border-color:var(--night-line);color:#dce4f5}.tile.dark h3{color:#fff}.tile.dark>p{color:#b7c2de}.tile.dark a.more{color:#a5b5ff}.depth-demo{background:var(--surface-2);border-radius:var(--r-m);padding:16px 18px;min-height:120px;font-size:15.5px;color:var(--ink);line-height:1.6}.depth-demo p{margin:0;animation:pageIn .3s var(--ease)}.depth-demo .q{font-weight:750;margin-bottom:6px}.flip{display:block;perspective:900px;cursor:pointer;min-height:220px;border:0;background:none;padding:0;text-align:left;width:100%;font:inherit;color:inherit}.flip-in{display:block;position:relative;width:100%;min-height:220px;transition:transform .55s var(--ease);transform-style:preserve-3d}.flip.on .flip-in{transform:rotateY(180deg)}.flip-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:var(--r-m);padding:16px 18px;display:flex;flex-direction:column;justify-content:space-between;font-size:15px;line-height:1.5}.flip-face small{font-size:12.5px;font-weight:650;opacity:.75}.flip-front{background:var(--blue-soft);color:var(--ink);font-weight:700}.flip-back{background:var(--ink);color:var(--bg);transform:rotateY(180deg);font-size:13.5px;line-height:1.5;overflow:auto;gap:8px}.cmp-demo{background:var(--code-bg);border-radius:var(--r-m);padding:14px 16px;min-height:140px;font-family:var(--mono);font-size:12.8px;line-height:1.65;color:var(--code-ink);overflow-x:auto;white-space:pre;margin:0}.cmp-demo code{background:none;border:0;padding:0;color:inherit;font-size:inherit;overflow-wrap:normal}.switch{display:inline-flex;align-items:center;gap:10px;font-weight:650;font-size:14px;color:var(--ink-2);cursor:pointer;border:0;background:none;padding:0}.switch .knob{position:relative;width:44px;height:26px;border-radius:999px;background:var(--surface-3);transition:background .2s;flex:none}.switch .knob:after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #00000040;transition:transform .25s var(--ease)}.switch[aria-checked=true] .knob{background:var(--blue)}.switch[aria-checked=true] .knob:after{transform:translate(18px)}.plan-demo{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-weight:650;color:var(--ink-2)}.plan-demo select{font:inherit;font-weight:750;border:1px solid var(--line);border-radius:10px;padding:7px 10px;background:var(--surface);color:var(--ink);cursor:pointer}.tile .plan-num{font-family:var(--display);font-size:3rem;font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--ink);margin:4px 0 0}.tile .plan-num small{display:block;font-family:var(--sans);font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:8px}.chat-demo{display:flex;flex-direction:column;gap:8px}.bubble{align-self:flex-end;background:#2446e8;color:#fff;border-radius:14px 14px 4px;padding:8px 13px;font-size:14px;max-width:88%}.bubble.a{align-self:flex-start;background:#ffffff17;color:#dce4f5;border-radius:14px 14px 14px 4px}.typing{display:inline-flex;gap:4px;padding:4px 0}.typing i{width:6px;height:6px;border-radius:50%;background:#a5b5ff;animation:blink 1.2s infinite}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}@keyframes blink{0%,80%,to{opacity:.3}40%{opacity:1}}.vchips{display:flex;flex-wrap:wrap;gap:8px}.vchips a{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line-2);color:var(--ink);font-weight:750;text-decoration:none;font-size:14px;transition:border-color .2s,background .2s}.vchips a:hover{border-color:var(--ember-fill);background:var(--ember-soft)}.vchips small{font-size:10.5px;font-weight:800;color:var(--ember)}.cta-band{margin:80px 0 0;background:var(--night);border-radius:var(--r-l);padding:44px 40px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;color:#dce4f5;position:relative;overflow:hidden;isolation:isolate}.cta-band:before{content:"";position:absolute;right:-10%;top:-60%;width:55%;height:180%;background:radial-gradient(closest-side,rgba(36,70,232,.55),transparent);pointer-events:none;z-index:-1}.cta-band h2{color:#fff;margin:0 0 8px;font-size:clamp(1.7rem,3vw,2.4rem);letter-spacing:-.035em}.cta-band p{margin:0;color:#b7c2de;max-width:52ch}@media(max-width:980px){.hero{grid-template-columns:minmax(0,1fr);gap:34px;padding-top:32px}.bento{grid-template-columns:1fr 1fr}.span-4,.span-3{grid-column:span 2}.span-2{grid-column:span 1}.cta-band{grid-template-columns:1fr;padding:32px 24px}}@media(max-width:600px){.bento{grid-template-columns:1fr}.span-4,.span-3,.span-2{grid-column:span 1}.cw-body{font-size:12px}.vtabs button{width:34px;font-size:12.5px}.vtabs .thumb{width:34px;transform:translate(calc(var(--i,0) * 36px))}}.page-head{padding:48px 0 12px}.page-head h1{font-size:clamp(2.2rem,4.6vw,3.5rem);letter-spacing:-.04em;line-height:1.04;margin:0 0 14px;max-width:18ch}.page-head p{color:var(--ink-2);max-width:62ch;margin:0 0 8px;font-size:1.05rem}.crumb{font-size:14px;color:var(--muted);margin:0 0 4px;font-weight:550}.crumb a{color:var(--muted)}.loading{padding:40px 0}.empty{padding:40px 0 24px;max-width:62ch}.empty h1{font-size:clamp(1.8rem,3vw,2.4rem);letter-spacing:-.03em;margin:0 0 10px}.empty p{color:var(--ink-2);margin:0 0 18px}.small-note{font-size:14px;margin:10px 0 14px}.mono{font-family:var(--mono);font-size:12.8px}.learn{display:grid;grid-template-columns:280px minmax(0,1fr) 320px;gap:40px;max-width:1420px;margin:0 auto;padding:28px 24px 64px}.side{position:sticky;top:calc(env(safe-area-inset-top,0px) + 80px);align-self:start;max-height:calc(100vh - 100px);overflow:auto;padding-right:6px;scrollbar-width:thin}.side-top{display:flex;align-items:center;justify-content:space-between;margin:0 0 8px}.side-top h2{font-family:var(--sans);font-size:14px;letter-spacing:0;color:var(--muted);font-weight:750;margin:0}.side-close{display:none}.mod{border-bottom:1px solid var(--line-2)}.mod summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:10px;padding:9px 6px;border-radius:10px;font-weight:650;font-size:14.5px;line-height:1.3;transition:background .15s}.mod summary::-webkit-details-marker{display:none}.mod summary:hover{background:var(--surface)}.mod .num{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:12.5px;flex:none;background:conic-gradient(var(--moss) calc(var(--p) * 1%),var(--surface-3) 0)}.mod .num b{width:22px;height:22px;border-radius:50%;background:var(--bg);display:grid;place-items:center;font-weight:800}.mod .count{margin-left:auto;font-size:12.5px;color:var(--muted);font-weight:650;flex:none}.les{list-style:none;margin:0 0 8px 18px;padding:0 0 0 10px;border-left:2px solid var(--line-2)}.les a{display:flex;align-items:center;gap:9px;padding:6px 9px;border-radius:9px;color:var(--ink-2);text-decoration:none;font-size:14.3px;line-height:1.35;transition:background .15s,color .15s}.les a:hover{background:var(--surface);color:var(--ink)}.les a[aria-current=page]{background:var(--blue-soft);color:var(--blue);font-weight:650}.dot{width:10px;height:10px;border-radius:50%;border:2px solid var(--line);flex:none;transition:background .2s,border-color .2s}.dot.done{background:var(--moss);border-color:var(--moss)}.need{margin-left:auto;font-size:11.5px;font-weight:750;color:var(--brick);white-space:nowrap;flex:none}.need.muted{color:var(--muted)}.ok-txt{color:var(--moss)}.lesson{max-width:74ch;min-width:0}.crumb-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 6px}.side-toggle{display:none}.lesson h1{font-size:clamp(2rem,3.6vw,2.9rem);line-height:1.08;letter-spacing:-.04em;margin:0 0 14px}.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:14.5px;color:var(--muted);margin-bottom:18px;font-weight:550}.since{font-family:var(--mono);font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;white-space:nowrap;line-height:1.5}.since.ok{color:var(--moss);background:var(--moss-soft)}.since.no{color:var(--brick);background:var(--brick-soft)}.need-txt{color:var(--brick)}.depth-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin:0 0 30px;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m)}.depth-row .lbl{font-size:14.5px;color:var(--ink-2);font-weight:750}.depth-row .hint{font-size:14px;color:var(--muted)}.prose p,.prose li{font-size:17px;line-height:1.75;color:var(--ink-2)}.prose strong{color:var(--ink)}.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.3em 0}.prose p{margin:0 0 1em}.lesson h2{font-size:1.5rem;margin:40px 0 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var(--line);background:var(--surface);border-radius:var(--r-m)}.done-row p{margin:0;color:var(--muted);font-size:15px}.btn-done[aria-pressed=true]{background:var(--moss-soft);border-color:var(--moss);color:var(--moss)}.pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}.pn a{display:block;border:1px solid var(--line);border-radius:var(--r-m);padding:14px 18px;text-decoration:none;background:var(--surface);color:var(--ink);line-height:1.35;font-weight:650;transition:border-color .2s,transform .2s var(--ease)}.pn a:hover{border-color:var(--blue);transform:translateY(-2px)}.pn a small{display:block;color:var(--muted);font-size:13px;font-weight:500;margin-bottom:3px}.pn .next{text-align:right;grid-column:2}.rail{position:sticky;top:calc(env(safe-area-inset-top,0px) + 80px);align-self:start;display:flex;flex-direction:column;gap:14px;min-width:0}.card-s{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:16px 18px}.card-s 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pre{background:var(--code-bg);color:var(--code-ink);padding:10px;border-radius:10px;overflow-x:auto;font-family:var(--mono);font-size:12.6px;line-height:1.55;margin:.5em 0}.msg pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}.msg.note{background:transparent;color:var(--muted);font-size:13.5px;padding:0 2px}.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.ask{display:flex;gap:8px;align-items:flex-end}.ask textarea{flex:1;min-width:0;resize:none;font:inherit;font-size:14.5px;border:1px solid var(--line);border-radius:12px;padding:9px 11px;background:var(--surface);color:var(--ink);min-height:44px;max-height:140px;line-height:1.4}.scrim{position:fixed;inset:0;background:#0a0f1e80;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:55;animation:fadeIn .2s}@keyframes fadeIn{0%{opacity:0}}@media(max-width:1180px){.learn{grid-template-columns:250px 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4px;font-size:1.5rem;letter-spacing:-.025em}.planner>p{margin:0;color:var(--ink-2);font-size:15.5px}.plan-ctl{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:16px 0 18px;font-size:15px;font-weight:650}.plan-sum{font-size:16px;margin:0 0 16px;color:var(--ink-2)}.plan-sum strong{color:var(--ink)}.plan-out{columns:2 300px;column-gap:44px}.plan-group{break-inside:avoid;margin:0 0 18px}.plan-group h3{font-family:var(--sans);letter-spacing:0;font-size:15px;margin:0 0 6px;display:flex;align-items:center;gap:8px}.plan-group ul{margin:0;padding-left:18px;font-size:14.5px;color:var(--ink-2);line-height:1.6}.plan-group li span{color:var(--muted);white-space:nowrap}.plan-group.warn h3{color:var(--brick)}.vtools{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:center;margin:8px 0 14px}.vsearch{flex:1 1 260px;padding:11px 14px;font-size:16px;border-radius:12px}.filt{display:flex;flex-wrap:wrap;gap:6px}.filt button{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 13px;font-size:14px;font-weight:650;cursor:pointer;color:var(--ink-2);transition:all .2s}.filt button:hover{border-color:var(--ink-2)}.filt button[aria-pressed=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.legend-k{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px;color:var(--muted);margin:4px 0 6px}.legend-k span{display:inline-flex;align-items:center;gap:6px}.k{flex:none;width:9px;height:9px;border-radius:3px;display:inline-block}.k-l{background:#2446e8}.k-a{background:#0b8a6b}.k-j{background:#8b5cf6}.k-t{background:#64748b}.k-s{background:#d19a0a}.k-x{background:#c23a2b}.vcount{font-size:14px;color:var(--muted);margin:10px 0 0}.ver{display:grid;grid-template-columns:190px minmax(0,1fr);gap:26px;padding:30px 0;border-top:1px solid var(--line)}.ver .vn{font-family:var(--display);font-size:clamp(2.8rem,5vw,4rem);font-weight:800;line-height:.95;letter-spacing:-.05em;font-variant-numeric:tabular-nums}.ver.lts .vn{color:var(--ember)}.ver.planned .vn{color:var(--muted)}.ver .vdate{color:var(--muted);font-size:14px;margin-top:10px;line-height:1.45}.vtags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.feats{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:4px 28px}.feat{display:flex;gap:10px;font-size:15px;line-height:1.45;padding:5px 8px;margin:0 -8px;border-radius:8px;transition:background .2s}.feat:hover{background:var(--surface)}.feat .k{margin-top:.48em}.st{font-size:11.5px;font-weight:650;color:var(--muted);border:1px dashed var(--line);border-radius:999px;padding:0 7px;margin-left:6px;white-space:nowrap;display:inline-block;line-height:1.6}.feat.hit{background:var(--ember-soft);box-shadow:0 0 0 2px var(--ember-fill)}.ver .code{margin-top:16px}.nores{padding:30px 0;color:var(--muted);border-top:1px solid var(--line)}@media(max-width:760px){.ver{grid-template-columns:minmax(0,1fr);gap:12px}.ver .vn{font-size:2.7rem}}.eco{list-style:none;margin:10px 0 0;padding:0}.eco li{display:grid;grid-template-columns:110px minmax(0,1fr);gap:24px;padding:18px 0;border-top:1px solid var(--line)}.eco .yr{font-family:var(--display);font-size:1.8rem;font-weight:800;letter-spacing:-.035em;font-variant-numeric:tabular-nums;line-height:1.1}.eco h3{margin:0 0 4px;font-size:1.12rem;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.eco p{margin:0;color:var(--ink-2);font-size:15.5px}@media(max-width:620px){.eco li{grid-template-columns:1fr;gap:4px}}.iv-tools{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin:22px 0 18px}.iv-prog{font-size:15px;color:var(--ink-2);font-weight:650;margin:0}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px;padding-bottom:24px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:18px 20px;display:flex;flex-direction:column;gap:10px;transition:border-color .2s}.card.known{border-color:color-mix(in srgb,var(--moss) 55%,var(--line))}.card .from{font-size:13px;color:var(--muted)}.card .from a{color:var(--muted)}.card .qq{font-weight:700;font-size:16.5px;line-height:1.42}.card .ans{color:var(--ink-2);font-size:15px;border-top:1px dashed var(--line);padding-top:10px;line-height:1.6;animation:pageIn .25s var(--ease)}.card .row{display:flex;gap:8px;margin-top:auto;flex-wrap:wrap}.card .row .on{background:var(--moss-soft);border-color:var(--moss);color:var(--moss)}.free-note{background:var(--moss-soft);color:var(--ink);border-radius:var(--r-m);padding:14px 18px;margin:18px 0 26px;max-width:82ch;font-size:15.5px}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px;padding:8px 0 24px}.ccard{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);display:flex;flex-direction:column;overflow:hidden;transition:transform .25s var(--ease),box-shadow .25s,border-color .25s}.ccard:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:transparent}.cover{position:relative;height:128px;display:flex;align-items:flex-end;justify-content:space-between;padding:14px 16px;color:#fff;overflow:hidden;background:var(--c1,#2446E8)}.cover:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.24) 1.2px,transparent 1.3px);background-size:14px 14px;-webkit-mask-image:linear-gradient(120deg,transparent 30%,#000);mask-image:linear-gradient(120deg,transparent 30%,#000)}.cover .glyph{position:relative;font-family:var(--mono);font-weight:600;font-size:38px;line-height:1;letter-spacing:-.04em}.cover .tag{position:relative;background:#ffffff38;color:#fff}.lvl-Beginner{--c1:#0B8A6B}.lvl-Intermediate{--c1:#2446E8}.lvl-Advanced{--c1:#C2410C}.ccard-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}.ccard-top{display:flex;gap:6px;flex-wrap:wrap}.ccard h2{font-size:1.22rem;margin:0;line-height:1.25;letter-spacing:-.02em}.ccard h2 a{color:var(--ink);text-decoration:none}.ccard h2 a:after{content:"";position:absolute;inset:0}.ccard p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.5}.ccard .cmeta,.cmeta{color:var(--muted);font-size:14px;font-weight:550}.ccard-foot{position:relative;z-index:1;margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px}.price{font-family:var(--display);font-size:2rem;font-weight:800;letter-spacing:-.035em;line-height:1}.ccard .price{font-size:1.5rem}.course-hero{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;padding:40px 0 8px}.course-hero h1{font-size:clamp(2.2rem,4.4vw,3.4rem);line-height:1.04;letter-spacing:-.04em;margin:6px 0 16px;max-width:20ch}.course-hero .lede{margin:0 0 12px}.buy-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:22px;display:flex;flex-direction:column;gap:10px;position:sticky;top:calc(env(safe-area-inset-top,0px) + 90px);box-shadow:var(--shadow-2)}.buy-card small{color:var(--muted);font-size:13.5px;line-height:1.45}.detail-sec{margin:36px 0;max-width:80ch}.detail-sec h2{font-size:1.6rem;margin:0 0 12px;letter-spacing:-.025em}.outcomes{list-style:none;columns:2 280px;column-gap:32px;padding:0;margin:0}.outcomes li{position:relative;margin:0 0 .7em;padding-left:30px;break-inside:avoid;color:var(--ink-2)}.outcomes li:before{content:"";position:absolute;left:0;top:.2em;width:20px;height:20px;border-radius:50%;background:var(--moss-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-6.5' fill='none' stroke='%230B8A6B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat}.cur-sec{border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface);margin:0 0 12px;overflow:hidden}.cur-sec h3{margin:0;padding:13px 18px;font-family:var(--sans);letter-spacing:0;font-size:15px;background:var(--surface-2);border-bottom:1px solid var(--line-2)}.cur-list{list-style:none;margin:0;padding:4px 0}.cur-list li{display:flex;align-items:center;gap:10px;padding:9px 18px;font-size:15px;line-height:1.4;transition:background .15s}.cur-list li:hover{background:var(--surface-2)}.cur-list .dur{margin-left:auto;color:var(--muted);font-size:13.5px;white-space:nowrap}.lock{font-size:12px;font-weight:650;color:var(--muted)}.player{display:grid;grid-template-columns:300px minmax(0,1fr);gap:44px;max-width:1260px;margin:0 auto;padding:28px 24px 64px}.player .lesson{max-width:76ch}.side-top h2 a{color:var(--ink);text-decoration:none;font-size:15px;font-family:var(--display);font-weight:700}.pl-progress{margin:4px 0 8px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px}.pl-progress p{margin:0;font-size:13px;color:var(--muted);font-weight:650}.pl-sec h3{font-family:var(--sans);letter-spacing:0;font-size:13px;color:var(--muted);font-weight:750;margin:16px 0 6px}.pl-sec .les{margin-left:4px}.locked-link{opacity:.7}.locked-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:28px 30px;margin:10px 0 24px}.locked-box h1{font-size:clamp(1.7rem,3vw,2.3rem);margin:0 0 10px}.locked-box p{color:var(--ink-2);margin:0 0 18px}.cta-box{background:var(--blue-soft);border-radius:var(--r-m);padding:16px 20px;margin:30px 0 8px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}.cta-box p{margin:0}.video{position:relative;aspect-ratio:16/9;border-radius:var(--r-m);overflow:hidden;background:#000;margin:0 0 26px;box-shadow:var(--shadow-2)}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-file{width:100%;border-radius:var(--r-m);background:#000;margin:0 0 26px}.rich pre{background:var(--code-bg);color:var(--code-ink);padding:16px 18px;border-radius:var(--r-m);overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.65;margin:0 0 1.3em;border:1px solid var(--code-line)}.rich pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit;overflow-wrap:normal}.rich p.md-h strong{display:block;font-family:var(--display);font-size:1.35rem;letter-spacing:-.025em;margin-top:1.4em;color:var(--ink)}.msg p.md-h strong{display:block;margin-top:.4em}@media(max-width:860px){.course-hero{grid-template-columns:1fr;gap:20px;padding-top:28px}.buy-card{position:static}}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface)}.tbl{width:100%;border-collapse:collapse;font-size:14.5px}.tbl th,.tbl td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:top}.tbl th{font-weight:750;color:var(--muted);font-size:13px;white-space:nowrap;background:var(--surface-2)}.tbl tr:last-child td{border-bottom:0}.tbl tbody tr{transition:background .15s}.tbl tbody tr:hover{background:var(--surface-2)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin:8px 0 24px}.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:16px 18px}.stat span{display:block;color:var(--muted);font-size:13.5px;font-weight:650}.stat strong{font-family:var(--display);font-size:1.9rem;letter-spacing:-.035em}.bar-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:30px 0 12px}.bar-head h2{margin:0;font-size:1.5rem}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:20px 22px;margin:0 0 16px}.panel.narrow{max-width:520px}.panel h2{margin:0 0 6px;font-size:1.3rem}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:0 16px}.mono-area{font-family:var(--mono)!important;font-size:13.5px!important;line-height:1.55}.row-head{display:flex;gap:12px;align-items:flex-end}.row-between{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}.grow{flex:1}.row-btns{display:flex;gap:6px;padding-bottom:14px}.row-between .row-btns{padding-bottom:0}.row-btns .icon-btn{width:34px;height:34px;font-size:14px}.row-btns .icon-btn[disabled]{opacity:.4;cursor:default}.lec-edit{border:1px solid var(--line-2);border-radius:var(--r-m);margin:0 0 10px;background:var(--surface-2)}.lec-edit summary{cursor:pointer;padding:11px 14px;font-weight:650;line-height:1.4}.lec-edit summary .muted{font-weight:400;font-size:13.5px;margin-left:6px}.lec-edit .inner{padding:4px 14px 14px}.save-bar{position:sticky;bottom:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:14px 0 calc(env(safe-area-inset-bottom,0px) + 14px);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:12px}.save-bar .err{margin:0}@media(max-width:700px){.grid2,.grid3{grid-template-columns:1fr}}.auth-page{max-width:460px;margin:0 auto;padding:56px 0 24px}.auth-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:30px 28px;box-shadow:var(--shadow-2)}.auth-card h1{font-size:2rem;margin:0 0 8px;letter-spacing:-.035em}.auth-card>p{color:var(--ink-2);margin:0 0 20px}.auth-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);margin:0 0 16px}.auth-icon.ok{background:var(--moss-soft);color:var(--moss)}.auth-icon.bad{background:var(--brick-soft);color:var(--brick)}.auth-icon svg{width:26px;height:26px}.strength{display:flex;align-items:center;gap:10px;margin:-6px 0 14px;font-size:12.5px;font-weight:650;color:var(--muted)}.strength .segs{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;flex:1}.strength .segs i{height:5px;border-radius:99px;background:var(--surface-3);transition:background .25s}.strength[data-score="1"] .segs i:nth-child(-n+1){background:var(--brick)}.strength[data-score="2"] .segs i:nth-child(-n+2){background:#e6a700}.strength[data-score="3"] .segs i:nth-child(-n+3){background:var(--blue)}.strength[data-score="4"] .segs i{background:var(--moss)}.strength span{min-width:78px;text-align:right}.forgot-row{display:flex;justify-content:flex-end;margin:-6px 0 12px}.search{position:fixed;inset:0;z-index:90;background:#0a0f1e80;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);padding:calc(env(safe-area-inset-top,0px) + 10vh) 16px 16px;animation:fadeIn .15s}.search-box{max-width:660px;margin:0 auto;background:var(--surface);border-radius:var(--r-l);box-shadow:var(--shadow-2);overflow:hidden;border:1px solid var(--line);animation:popIn .2s var(--ease)}.search-box input{width:100%;border:0;border-bottom:1px solid var(--line);padding:20px 22px;font:inherit;font-size:18px;background:transparent;color:var(--ink);outline:none}.results{list-style:none;margin:0;padding:8px;max-height:min(60vh,520px);overflow:auto}.results a{display:flex;gap:14px;align-items:baseline;padding:11px 14px;border-radius:12px;text-decoration:none;color:var(--ink);line-height:1.35;font-weight:650}.results a[aria-selected=true],.results a:hover{background:var(--blue-soft)}.results .rt{font-size:12.5px;color:var(--muted);flex:none;width:86px;font-weight:650}.results .rs{font-size:13px;color:var(--muted);display:block;margin-top:2px;font-weight:400}.s-empty{padding:16px 20px;color:var(--muted);font-size:15px}.modal{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:20px;background:#0a0f1e8c;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:fadeIn .15s}.sheet{position:relative;background:var(--surface);border-radius:var(--r-l);width:min(460px,100%);padding:28px;box-shadow:var(--shadow-2);max-height:100%;overflow:auto;border:1px solid var(--line);animation:sheetIn .25s var(--ease)}.sheet:focus{outline:none}@keyframes sheetIn{0%{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:none}}.sheet h2{margin:0 0 6px;font-size:1.6rem;letter-spacing:-.03em;padding-right:36px}.sheet .for{margin:0 0 8px;color:var(--ink-2);font-size:15px}.sheet .x{position:absolute;right:16px;top:16px}.atabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin:16px 0 18px;background:var(--surface-2);padding:4px;border-radius:12px}.atabs button{border:0;background:none;padding:9px 12px;cursor:pointer;color:var(--muted);border-radius:9px;font-size:14.5px;font-weight:650;transition:background .2s,color .2s}.atabs button[aria-selected=true]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px #10182824}.sent-box{background:var(--moss-soft);color:var(--ink);border-radius:var(--r-m);padding:14px 16px;margin:14px 0 16px;font-size:15px}.demo-note{background:var(--ember-soft);border-radius:var(--r-m);padding:12px 14px;font-size:15px;margin:10px 0 16px}.toast{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 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var(--line-2)}}@media(max-width:860px){.adm{grid-template-columns:minmax(0,1fr)}.adm-side{position:static;height:auto;flex-direction:column}.adm-nav{flex-direction:row;flex-wrap:wrap}.adm-nav .adm-site{margin-top:0;border-top:0;padding-top:10px}.adm-user{margin-top:0}.adm-main{padding:20px 16px 48px}}.adm-login{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:100vh}.adm-login-art{position:relative;overflow:hidden;isolation:isolate;background:#120b2e;color:#fff;padding:40px;display:flex;flex-direction:column;justify-content:space-between}.adm-login-art .aurora i:nth-child(1){background:#6c4dff}.adm-login-art .aurora i:nth-child(2){background:#ff3d7f}.adm-login-art .aurora i:nth-child(3){background:#ff7a45}.adm-login-copy h2{color:#fff;font-size:clamp(1.8rem,3vw,2.6rem);letter-spacing:-.035em;margin:0 0 10px;max-width:16ch}.adm-login-copy p{color:#d9d4f2;max-width:42ch}.adm-login-copy 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.2s,background .2s}.lv-drop:hover,.lv-drop.over{border-color:var(--blue);background:var(--blue-soft)}.lv-drop input{position:absolute;inset:0;opacity:0;cursor:pointer}.lv-drop-ico{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--grad);color:#fff;font-size:20px;font-weight:800}.lv-drop strong{font-size:15px;color:var(--ink)}.lv-drop .muted{font-size:13px}.lv-upload{display:grid;gap:6px;padding:14px 16px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line-2)}.lv-upload strong{font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lv-bar{height:10px;margin:4px 0}.lv-bar i{background:var(--grad)}.lv-upload .muted,.lv-upload small{font-size:13px}.lv-current{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line-2)}.lv-ico{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--grad);color:#fff;font-size:15px;flex:none}.lv-info{flex:1;min-width:200px;display:grid;gap:2px}.lv-info strong{font-size:14.5px}.lv-info .muted{font-size:13px}.lv-info .bar{margin:6px 0 0;height:6px}.lv-actions{display:flex;gap:6px}.lv-lib{list-style:none;margin:0;padding:0;max-height:260px;overflow:auto;border:1px solid var(--line-2);border-radius:12px}.lv-lib li{display:flex;align-items:center;gap:10px;padding:8px 12px;border-top:1px solid var(--line-2);font-size:14px}.lv-lib li:first-child{border-top:0}.lv-title{flex:1;font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lv-link{width:100%}.buy-card.has-trailer{padding-top:0;overflow:hidden}.trailer{position:relative;margin:0 -22px 6px}.trailer .video{margin:0;border-radius:0;box-shadow:none}.trailer-tag{position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:999px;background:#0a081ab3;color:#fff;font-size:12px;font-weight:700;pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.includes{border-top:1px solid var(--line-2);padding-top:12px;margin-top:4px}.includes strong{font-size:14px}.includes ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:8px}.includes li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.4}.includes svg{width:18px;height:18px;flex:none;fill:none;stroke:var(--blue);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:1px}.includes li:first-child svg{fill:var(--blue)}.cur-ico{width:24px;height:24px;border-radius:8px;display:grid;place-items:center;flex:none;background:var(--surface-3);color:var(--muted)}.cur-ico svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:2;stroke-linejoin:round}.cur-ico.vid{background:var(--blue-soft);color:var(--blue)}.cur-ico.vid svg{fill:currentColor;stroke:none}.cover-tags{position:relative;display:flex;gap:6px}.sub-toc{margin:0 0 26px;padding:16px 18px;border-radius:var(--r-m);background:var(--surface);border:1px solid var(--line)}.sub-toc p{margin:0 0 8px;font-size:14.5px;color:var(--muted)}.sub-toc p strong{color:var(--ink)}.sub-toc ol{margin:0;padding-left:22px;columns:2 240px;column-gap:28px}.sub-toc li{margin:4px 0;font-size:15px;break-inside:avoid}.sub-toc a{text-decoration:none;font-weight:600}.sub-toc a:hover{text-decoration:underline}.subs{margin:8px 0 10px}.sub{padding:22px 0 8px;border-top:1px solid var(--line-2);scroll-margin-top:90px}.sub:first-child{border-top:0}.sub h2{display:flex;align-items:center;gap:12px;margin:0 0 10px!important;font-size:1.35rem!important}.sub-no{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;flex:none;font-size:14px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--c1,#FF7A45),var(--c2,#6C4DFF))}.sub-need{display:inline-block;margin:0 0 10px}.side-subs{list-style:none;margin:2px 0 8px 22px;padding:0 0 0 10px;border-left:2px solid var(--blue-soft)}.side-subs a{display:block;padding:4px 8px;font-size:13px;color:var(--muted);text-decoration:none;border-radius:8px;line-height:1.35}.side-subs a:hover{color:var(--ink);background:var(--surface)}.topic-list li{display:flex;flex-direction:column;gap:4px}.topic-subs{margin:0 4px}.topic-subs summary{cursor:pointer;font-size:12.5px;font-weight:700;color:var(--blue);padding:2px 10px;list-style:none}.topic-subs summary::-webkit-details-marker{display:none}.topic-subs summary:before{content:"\25b8  "}.topic-subs[open] summary:before{content:"\25be  "}.topic-subs ul{list-style:none;margin:4px 0 6px;padding:0 0 0 14px;border-left:2px solid var(--line-2)}.topic-subs li a{display:block;padding:3px 8px;font-size:13.5px;color:var(--ink-2);text-decoration:none;border-radius:8px}.topic-subs li a:hover{background:var(--surface-2);color:var(--ink)}.ml{padding-bottom:10px}.ml-head h1{max-width:24ch}.ml-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:10px 0 18px}.ml-stat{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:16px 18px}.ml-stat strong{display:block;font-family:var(--display);font-size:1.4rem;letter-spacing:-.03em;line-height:1.15}.ml-stat>div>span{display:block;color:var(--muted);font-size:13.5px}.ml-stat .ring{width:54px;height:54px}.ml-stat .ring 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0}.st-ahead,.st-on-track{background:var(--moss-soft);color:var(--ink)}.st-behind{background:var(--ember-soft);color:var(--ink)}.ml-plan .fld{margin-bottom:12px}.ml-plan input[type=range]{width:100%;accent-color:var(--blue);padding:0;border:0}.ml-preview-line{padding:12px 14px;border-radius:12px;background:var(--surface-2);font-size:14.5px;margin:4px 0 12px}.ml-scen{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}.ml-scen caption{text-align:left;color:var(--muted);font-size:13px;padding-bottom:6px}.ml-scen th,.ml-scen td{padding:7px 10px;border-top:1px solid var(--line-2);text-align:left;font-weight:500}.ml-scen tr.on{background:var(--blue-soft)}.ml-scen tr.on th,.ml-scen tr.on td{font-weight:750;color:var(--blue)}.ml-chart{width:100%;height:170px;display:block;margin-top:10px}.ml-chart rect{fill:color-mix(in srgb,var(--blue) 55%,var(--surface))}.ml-chart rect.cur{fill:url(#none);fill:var(--brand-2,#FF3D7F)}.ml-chart .goal{stroke:var(--ember-fill);stroke-width:.4;stroke-dasharray:1.5 1.2}.ml-chart-labels{display:grid;grid-template-columns:repeat(12,1fr);font-size:11px;color:var(--muted);text-align:center;margin-top:4px}.ml-stages{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:10px}.ml-stages li{display:flex;align-items:center;gap:12px}.ml-stage-main{flex:1;min-width:0}.ml-stage-main .bar{margin:6px 0 0}.ml-recent{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:6px}.ml-recent li{display:flex;justify-content:space-between;gap:12px;font-size:15px;padding:6px 0;border-top:1px solid var(--line-2)}.ml-recent li:first-child{border-top:0}.ml-gate{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center;padding:48px 0 20px}.ml-gate h1{font-size:clamp(2.2rem,4vw,3.3rem);letter-spacing:-.04em;line-height:1.05;margin:0 0 14px;max-width:18ch}.benefits{list-style:none;margin:18px 0 24px;padding:0;display:grid;gap:14px}.benefits li{display:flex;gap:14px;align-items:flex-start}.benefits strong{display:block;font-size:16px}.benefits span:not(.benefit-ico){display:block;color:var(--ink-2);font-size:14.5px}.benefit-ico{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex:none;background:var(--grad);color:#fff;box-shadow:0 10px 22px -12px #ff3d7f99}.ml-preview{position:relative;display:grid;gap:12px;padding:22px;border-radius:26px;background:linear-gradient(135deg,color-mix(in srgb,var(--brand-1) 12%,var(--surface)),color-mix(in srgb,var(--brand-3) 12%,var(--surface)));border:1px solid var(--line)}.ml-preview-tag{position:absolute;top:-12px;right:18px;padding:4px 12px;border-radius:999px;background:var(--ink);color:var(--bg);font-size:12px;font-weight:750}.ml-prev-card{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:16px;background:var(--surface);border:1px solid var(--line);box-shadow:0 12px 26px -18px #3c1e7866}.ml-prev-card strong{display:block;font-size:15px}.ml-prev-card span:not(.ring){display:block;color:var(--muted);font-size:13px}.ml-prev-card .ring span{display:grid;color:var(--ink);font-size:12px}.ml-prev-big{font-family:var(--display);font-size:1.35rem;font-weight:800;letter-spacing:-.03em;min-width:90px;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}.login-nudge{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;padding:14px 16px;border-radius:var(--r-m);background:linear-gradient(135deg,color-mix(in srgb,var(--brand-1) 10%,var(--surface)),color-mix(in srgb,var(--brand-3) 10%,var(--surface)));border:1px solid var(--line);font-size:14.5px}.pace-line{margin:12px 0 0;padding:12px 16px;border-radius:var(--r-m);background:var(--moss-soft);font-size:14.5px}.dlg-benefits{list-style:none;margin:10px 0 4px;padding:0;display:grid;gap:6px;font-size:14px;color:var(--ink-2)}.dlg-benefits li:before{content:"\2713";color:var(--moss);font-weight:900;margin-right:8px}.perks-in{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:32px;align-items:center;padding:30px;border-radius:30px;background:linear-gradient(135deg,color-mix(in srgb,var(--brand-1) 8%,var(--surface)),color-mix(in srgb,var(--brand-3) 8%,var(--surface)));border:1px solid var(--line)}.perks-in h2{font-size:clamp(1.8rem,3vw,2.5rem);letter-spacing:-.035em;margin:0 0 10px;line-height:1.08}.perks-in .sub{margin:0 0 20px}.perk-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.perk{display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:18px;background:var(--surface);border:1px solid var(--line)}.perk strong{font-size:15.5px;margin-top:4px}.perk span:not(.benefit-ico){color:var(--ink-2);font-size:14px;line-height:1.45}@media(max-width:900px){.ml-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.ml-grid,.ml-gate,.perks-in{grid-template-columns:minmax(0,1fr)}}@media(max-width:520px){.ml-stats,.perk-grid{grid-template-columns:minmax(0,1fr)}.perks-in{padding:20px}}