@font-face{font-family:Bricolage Grotesque;src:url(https://cdn.jsdelivr.net/fontsource/fonts/bricolage-grotesque@latest/latin-800-normal.woff2) format("woff2");font-weight:800;font-display:swap}@font-face{font-family:Bricolage Grotesque;src:url(https://cdn.jsdelivr.net/fontsource/fonts/bricolage-grotesque@latest/latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Spline Sans;src:url(https://cdn.jsdelivr.net/fontsource/fonts/spline-sans@latest/latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Spline Sans;src:url(https://cdn.jsdelivr.net/fontsource/fonts/spline-sans@latest/latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}@font-face{font-family:Spline Sans;src:url(https://cdn.jsdelivr.net/fontsource/fonts/spline-sans@latest/latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Space Mono;src:url(https://cdn.jsdelivr.net/fontsource/fonts/space-mono@latest/latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Space Mono;src:url(https://cdn.jsdelivr.net/fontsource/fonts/space-mono@latest/latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Caveat;src:url(https://cdn.jsdelivr.net/fontsource/fonts/caveat@latest/latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}@font-face{font-family:Caveat;src:url(https://cdn.jsdelivr.net/fontsource/fonts/caveat@latest/latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}.landing{--paper:#f6f7f1;--paper2:#edefe4;--card:#fdfdf8;--ink:#122820;--ink-soft:#41584d;--grid:rgba(18,40,32,0.075);--green:#0e7b5b;--green-deep:#0c352a;--green-band:#0a2c22;--yellow:#ffd41f;--yellow-soft:#ffe873;--red:#de4426;--blue:#2b5fd9;--display:"Bricolage Grotesque",Georgia,serif;--body:"Spline Sans",system-ui,sans-serif;--mono:"Space Mono",ui-monospace,monospace;--hand:"Caveat",cursive;--hard:6px 6px 0 var(--ink);--hard-sm:4px 4px 0 var(--ink);font-family:var(--body);color:var(--ink);background-color:var(--paper);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:28px 28px;line-height:1.6;overflow-x:hidden;min-height:100vh}.landing ::selection{background:var(--yellow);color:var(--ink)}.landing img,.landing svg{display:block;max-width:100%}.landing a{color:inherit}.landing button{font-family:inherit;cursor:pointer}.landing .wrap{max-width:1180px;margin:0 auto;padding:0 24px}.landing section{scroll-margin-top:92px}.landing .progress-bar{position:fixed;top:0;left:0;height:4px;width:0;background:var(--yellow);border-right:2px solid var(--ink);z-index:200}.landing-header{position:sticky;top:0;z-index:100;background:var(--paper);border-bottom:2px solid var(--ink)}.landing .nav{gap:28px;height:72px}.landing .brand,.landing .nav{display:flex;align-items:center}.landing .brand{gap:10px;text-decoration:none}.landing .brand-mark{width:36px;height:36px;flex:none}.landing .brand-name{font-family:var(--display);font-weight:800;font-size:1.35rem;letter-spacing:-.02em;line-height:1}.landing .brand-tag{font-family:var(--mono);font-size:.55rem;letter-spacing:.28em;color:var(--green);display:block;margin-top:2px}.landing .nav-links{display:flex;gap:4px;margin-left:auto}.landing .nav-links a{text-decoration:none;font-weight:500;font-size:.92rem;padding:8px 12px;border-radius:6px;position:relative;background:linear-gradient(var(--yellow),var(--yellow)) no-repeat 0 100%/0 40%;transition:background-size .25s}.landing .nav-links a:hover{background-size:100% 40%}.landing .nav-cta{display:flex;gap:10px;align-items:center}.landing .burger{display:none;background:none;border:2px solid var(--ink);border-radius:8px;width:42px;height:42px;box-shadow:var(--hard-sm)}.landing .burger span{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto;transition:.25s}.landing .menu{display:none}.landing .btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:700;font-size:1rem;padding:13px 22px;border:2px solid var(--ink);border-radius:10px;background:var(--yellow);color:var(--ink);text-decoration:none;box-shadow:var(--hard-sm);transition:transform .15s,box-shadow .15s}.landing .btn:hover{transform:translate(-2px,-2px);box-shadow:var(--hard)}.landing .btn:active{transform:translate(1px,1px);box-shadow:2px 2px 0 var(--ink)}.landing .btn.ghost{background:var(--card)}.landing .btn.ink{background:var(--ink);color:var(--paper);box-shadow:4px 4px 0 rgba(18,40,32,.28)}.landing .btn.ink:hover{box-shadow:6px 6px 0 rgba(18,40,32,.28)}.landing .btn.sm{padding:9px 16px;font-size:.88rem}.landing .kicker{font-family:var(--mono);font-size:.72rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;display:inline-flex;align-items:center;gap:10px;color:var(--green)}.landing .kicker:before{content:"";width:10px;height:10px;background:var(--yellow);border:2px solid var(--ink);flex:none}.landing .kicker.red{color:var(--red)}.landing .h2{font-family:var(--display);font-weight:800;font-size:clamp(2rem,4.3vw,3.1rem);line-height:1.06;letter-spacing:-.02em;margin:16px 0 18px}.landing .lead{font-size:1.12rem;color:var(--ink-soft);max-width:62ch}.landing .chip,.landing .mono{font-family:var(--mono)}.landing .chip{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:700;padding:5px 11px;border:2px solid var(--ink);border-radius:999px;background:var(--card)}.landing .chip.y{background:var(--yellow)}.landing .chip.g{background:#cdebd9}.landing .chip.r{background:#f8d3c8}.landing .chip.b{background:#d4e0fa}.landing .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}.landing .reveal.in{opacity:1;transform:none}.landing .hero{position:relative;padding:72px 0 84px;overflow:hidden}.landing .hero-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;pointer-events:none}.landing .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.landing .h1{font-family:var(--display);font-weight:800;font-size:clamp(2.7rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.03em;margin:20px 0 22px}.landing .hl{background:linear-gradient(104deg,transparent .9%,var(--yellow) 2.4%,var(--yellow) 97%,transparent);background-repeat:no-repeat;background-size:0 74%;background-position:0 68%;animation:ld-swipe .8s cubic-bezier(.6,0,.3,1) .35s forwards;padding:0 .08em}@keyframes ld-swipe{to{background-size:100% 74%}}.landing .strike{position:relative;white-space:nowrap}.landing .strike:after{content:"";position:absolute;left:-4%;right:-4%;top:54%;height:4px;background:var(--red);border-radius:3px;transform:rotate(-2.5deg) scaleX(0);transform-origin:left;animation:ld-strike .45s 1.25s forwards}@keyframes ld-strike{to{transform:rotate(-2.5deg) scaleX(1)}}.landing .hand-note{font-family:var(--hand);font-weight:700;font-size:clamp(1.15rem,2vw,1.5rem);color:var(--green);display:inline-block;transform:rotate(-3deg);margin-left:14px;opacity:0;animation:ld-fadein .5s 1.8s forwards;vertical-align:super}@keyframes ld-fadein{to{opacity:1}}.landing .hero-sub{font-size:1.14rem;color:var(--ink-soft);max-width:52ch;margin-bottom:28px}.landing .hero-sub b{color:var(--ink)}.landing .cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.landing .micro{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;color:var(--ink-soft);margin-top:18px}.landing .micro b{color:var(--green)}.landing .fact-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.landing .demo{background:var(--card);border:2px solid var(--ink);border-radius:14px;box-shadow:var(--hard);overflow:hidden;position:relative}.landing .demo-head{display:flex;align-items:center;gap:10px;padding:12px 18px;border-bottom:2px solid var(--ink);background:var(--paper2);font-family:var(--mono);font-size:.7rem;font-weight:700;letter-spacing:.14em}.landing .rec{width:9px;height:9px;border-radius:50%;background:var(--red);animation:ld-blink 1.1s infinite}@keyframes ld-blink{50%{opacity:.25}}.landing .demo-body{position:relative;height:400px;padding:24px}.landing .dstep{position:absolute;inset:24px;opacity:0;transform:translateY(16px);transition:opacity .45s,transform .45s;pointer-events:none}.landing .dstep.on{opacity:1;transform:none;pointer-events:auto}.landing .dtag{font-family:var(--mono);font-size:.64rem;letter-spacing:.18em;color:var(--green);border:2px solid var(--ink);background:var(--yellow);display:inline-block;padding:4px 10px;border-radius:6px}.landing .dtag,.landing .dtitle{font-weight:700;margin-bottom:14px}.landing .dtitle{font-family:var(--display);font-size:1.35rem;letter-spacing:-.01em}.landing .eq{font-family:var(--mono);font-weight:700;font-size:1.7rem;background:var(--paper2);border:2px dashed var(--ink-soft);border-radius:10px;padding:12px 18px;display:inline-block;margin-bottom:14px}.landing .eq sub,.landing .eq sup{font-size:.62em}.landing .skills{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.landing .skill-chip{font-family:var(--mono);font-size:.66rem;font-weight:700;padding:4px 10px;border:1.5px solid var(--ink);border-radius:999px;background:var(--card)}.landing .ans-line{font-family:var(--mono);font-size:.95rem;display:flex;align-items:center;gap:12px}.landing .stamp{font-family:var(--mono);font-weight:700;font-size:.78rem;color:var(--red);border:2.5px solid var(--red);padding:3px 10px;border-radius:6px;transform:rotate(-4deg);letter-spacing:.1em}.landing .stamp.ok{color:var(--green);border-color:var(--green)}.landing .meter{display:grid;grid-template-columns:150px 1fr 48px;gap:10px;align-items:center;margin:12px 0}.landing .meter .ml{font-family:var(--mono);font-size:.7rem;font-weight:700}.landing .mtrack{height:14px;border:2px solid var(--ink);border-radius:99px;background:var(--card);overflow:hidden}.landing .mfill{height:100%;background:var(--green);border-radius:99px;transition:width .9s cubic-bezier(.6,0,.3,1),background-color .5s}.landing .mfill.bad{background:var(--red)}.landing .mfill.warn{background:#e8930c}.landing .meter .mv{font-family:var(--mono);font-size:.72rem;text-align:right}.landing .probe{display:flex;align-items:center;gap:12px;border:2px solid var(--ink);border-radius:10px;padding:12px 16px;margin:12px 0;background:var(--card);opacity:0;transform:translateX(-14px);transition:.45s}.landing .probe.show{opacity:1;transform:none}.landing .probe .pn{font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.1em}.landing .probe .pr{margin-left:auto;font-family:var(--mono);font-weight:700;font-size:.8rem}.landing .probe .pr.ok{color:var(--green)}.landing .probe .pr.no{color:var(--red)}.landing .verdict-line{display:flex;gap:10px;align-items:baseline;margin:9px 0;font-size:.98rem}.landing .verdict-line .sym{font-family:var(--mono);font-weight:700}.landing .ledger-line{font-family:var(--mono);font-size:.72rem;color:var(--green);border-top:2px dashed var(--ink-soft);margin-top:16px;padding-top:12px}.landing mark{background:var(--yellow);padding:0 4px}.landing .demo-foot{display:flex;align-items:center;gap:12px;padding:12px 18px;border-top:2px solid var(--ink);background:var(--paper2)}.landing .dots{display:flex;gap:8px}.landing .dot{width:12px;height:12px;border:2px solid var(--ink);border-radius:50%;background:var(--card);padding:0;transition:.2s}.landing .dot.on{background:var(--yellow)}.landing .replay{margin-left:auto;font-family:var(--mono);font-size:.7rem;font-weight:700;background:none;border:2px solid var(--ink);border-radius:8px;padding:6px 12px;box-shadow:3px 3px 0 var(--ink);transition:.15s}.landing .replay:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink)}.landing .demo-badge{position:absolute;top:-16px;right:22px;background:var(--green-deep);color:var(--paper);font-family:var(--mono);font-size:.62rem;font-weight:700;letter-spacing:.1em;padding:7px 12px;border:2px solid var(--ink);border-radius:8px;box-shadow:var(--hard-sm);transform:rotate(2deg);z-index:2}.landing .ticker{background:var(--yellow);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);overflow:hidden;padding:12px 0}.landing .ticker.inkband{background:var(--green-band);color:var(--paper)}.landing .ticker-track{display:flex;width:max-content;animation:ld-tick 38s linear infinite;white-space:nowrap}.landing .ticker:hover .ticker-track{animation-play-state:paused}.landing .ticker-track.rev{animation-direction:reverse;animation-duration:52s}@keyframes ld-tick{to{transform:translateX(-50%)}}.landing .ticker span{font-family:var(--mono);font-size:.74rem;font-weight:700;letter-spacing:.12em;padding:0 26px}.landing .ticker .sep{opacity:.5}.landing .sec{padding:104px 0}.landing .sec-head{max-width:760px;margin-bottom:52px}.landing .problem-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}.landing .problem-left{position:sticky;top:110px}.landing .circled{position:relative;display:inline-block;white-space:nowrap}.landing .circled:after{content:"";position:absolute;inset:-8px -14px;border:3px solid var(--red);border-radius:50%;transform:rotate(-2deg);opacity:.85;pointer-events:none}.landing .margin-note{font-family:var(--hand);font-weight:700;font-size:1.5rem;color:var(--red);transform:rotate(-2deg);display:inline-block;margin-top:14px}.landing .q-list{display:flex;flex-direction:column;gap:0}.landing .q-item{display:flex;gap:26px;padding:30px 8px;border-bottom:2px dashed var(--ink-soft);align-items:baseline;transition:background .25s,padding-left .25s}.landing .q-item:hover{background:rgba(255,212,31,.16);padding-left:20px}.landing .q-num{font-family:var(--display);font-weight:800;font-size:2.6rem;color:transparent;-webkit-text-stroke:2px var(--ink);flex:none;line-height:1}.landing .q-text{font-family:var(--display);font-weight:700;font-size:1.35rem;line-height:1.3;letter-spacing:-.01em}.landing .q-text em{font-style:normal;background:linear-gradient(transparent 62%,var(--yellow-soft) 62%)}.landing .problem-close{font-family:var(--hand);font-weight:700;font-size:1.6rem;color:var(--green);margin-top:26px;transform:rotate(-1.5deg)}.landing .loop-strip{position:relative;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(238px,1fr);gap:18px;overflow-x:auto;padding:34px 4px 22px;scroll-snap-type:x proximity}.landing .loop-strip:before{content:"";position:absolute;top:14px;left:0;right:0;height:3px;background:repeating-linear-gradient(90deg,var(--ink) 0 9px,transparent 0 18px);animation:ld-conveyor 1.1s linear infinite}@keyframes ld-conveyor{to{background-position:18px 0}}.landing .loop-card{scroll-snap-align:start;background:var(--card);border:2px solid var(--ink);border-radius:12px;padding:26px 20px 22px;position:relative;transition:transform .2s,box-shadow .2s}.landing .loop-card:hover{transform:translateY(-6px);box-shadow:var(--hard)}.landing .loop-idx{position:absolute;top:-16px;left:18px;background:var(--yellow);border:2px solid var(--ink);border-radius:8px;font-family:var(--mono);font-weight:700;font-size:.72rem;padding:4px 9px}.landing .loop-card h3{font-family:var(--display);font-weight:700;font-size:1.06rem;margin:8px 0;letter-spacing:-.01em}.landing .loop-card p{font-size:.88rem;color:var(--ink-soft)}.landing .loop-card .arr{position:absolute;right:-16px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-weight:700;font-size:1.2rem;color:var(--green);z-index:2;background:var(--paper);padding:2px}.landing .loop-card:last-child .arr{color:var(--red)}.landing .loop-note{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;color:var(--ink-soft);margin-top:8px}.landing .dark{background:var(--green-band);color:var(--paper);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);background-image:linear-gradient(rgba(246,247,241,.045) 1px,transparent 0),linear-gradient(90deg,rgba(246,247,241,.045) 1px,transparent 0);background-size:28px 28px}.landing .dark .kicker{color:var(--yellow)}.landing .dark .lead{color:#bcd3c6}.landing .diag-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:44px}.landing .diag-card{border:2px solid var(--ink);border-radius:14px;padding:28px;position:relative;background:rgba(246,247,241,.04)}.landing .diag-card.old{background:rgba(222,68,38,.08)}.landing .diag-card.new{background:rgba(14,123,91,.14)}.landing .diag-label{font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.2em;padding:5px 12px;border-radius:6px;display:inline-block;margin-bottom:16px;border:2px solid var(--ink)}.landing .old .diag-label{background:var(--red);color:var(--paper)}.landing .new .diag-label{background:var(--yellow);color:var(--ink)}.landing .diag-card h3{font-family:var(--display);font-weight:700;font-size:1.3rem;margin-bottom:8px}.landing .diag-card .desc{font-size:.9rem;color:#bcd3c6;margin-bottom:18px}.landing .dark .meter .ml{color:var(--paper)}.landing .dark .mtrack{background:rgba(246,247,241,.12);border-color:var(--paper)}.landing .dark .meter .mv{color:var(--paper)}.landing .dark .probe{background:rgba(246,247,241,.07);border-color:var(--paper);color:var(--paper)}.landing .diag-stamp{position:absolute;top:18px;right:18px;font-family:var(--mono);font-weight:700;font-size:.72rem;letter-spacing:.12em;color:var(--red);border:2.5px solid var(--red);padding:4px 10px;border-radius:6px;transform:rotate(5deg) scale(0);transition:transform .35s cubic-bezier(.3,1.6,.5,1)}.landing .diag-stamp.show{transform:rotate(5deg) scale(1)}.landing .diag-stamp.iso{color:var(--yellow);border-color:var(--yellow)}.landing .badge-clear{font-family:var(--mono);font-size:.62rem;font-weight:700;color:var(--green-deep);background:var(--yellow);border:1.5px solid var(--ink);border-radius:5px;padding:2px 7px;margin-left:8px;opacity:0;transition:.4s}.landing .badge-clear.show{opacity:1}.landing .repair-chip{display:inline-flex;gap:8px;align-items:center;font-family:var(--mono);font-size:.7rem;font-weight:700;background:var(--yellow);color:var(--ink);border:2px solid var(--ink);border-radius:8px;padding:7px 12px;margin-top:10px;opacity:0;transform:translateY(8px);transition:.4s}.landing .repair-chip.show{opacity:1;transform:none}.landing .dark .ledger-line{color:var(--yellow-soft);border-color:rgba(246,247,241,.3)}.landing .diag-replay{margin-top:30px}.landing .rule-line{font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;color:var(--yellow);margin-top:34px}.landing .engine-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}.landing .sim{background:var(--card);border:2px solid var(--ink);border-radius:14px;box-shadow:var(--hard);overflow:hidden}.landing .sim-head{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;padding:14px 20px;border-bottom:2px solid var(--ink);background:var(--paper2);font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.12em}.landing .sim-head .live{color:var(--green)}.landing .sim-chart{background:var(--green-deep);padding:18px 14px 8px}.landing .sim-controls{padding:22px 24px 26px;display:grid;gap:20px}.landing .ctl{display:grid;grid-template-columns:1fr auto;gap:6px 14px;align-items:center}.landing .ctl label{font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.14em}.landing .ctl output{font-family:var(--mono);font-weight:700;font-size:.95rem;color:var(--green)}.landing input[type=range]{-webkit-appearance:none;appearance:none;grid-column:1/-1;width:100%;height:26px;background:transparent}.landing input[type=range]::-webkit-slider-runnable-track{height:4px;background:var(--ink);border-radius:2px}.landing input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;background:var(--yellow);border:2.5px solid var(--ink);border-radius:6px;margin-top:-9px;cursor:grab;box-shadow:2px 2px 0 var(--ink);transition:transform .15s}.landing input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.12)}.landing input[type=range]::-moz-range-track{height:4px;background:var(--ink);border-radius:2px}.landing input[type=range]::-moz-range-thumb{width:18px;height:18px;background:var(--yellow);border:2.5px solid var(--ink);border-radius:6px;cursor:grab}.landing .readouts{display:flex;flex-wrap:wrap;gap:10px 22px;font-family:var(--mono);font-size:.74rem;font-weight:700;border-top:2px dashed var(--ink-soft);padding-top:16px}.landing .readouts b{font-size:1.05rem}.landing .verdict{margin-top:6px;font-family:var(--mono);font-size:.74rem;font-weight:700;letter-spacing:.06em;padding:10px 14px;border:2px solid var(--ink);border-radius:10px;transition:background .3s}.landing .verdict,.landing .verdict.v-review{background:var(--yellow)}.landing .verdict.v-ev{background:#d4e0fa}.landing .verdict.v-go{background:#cdebd9}.landing .legend{display:flex;flex-wrap:wrap;gap:14px;font-family:var(--mono);font-size:.64rem;letter-spacing:.08em;color:#bcd3c6;padding:10px 8px 4px}.landing .legend i{display:inline-block;width:18px;height:4px;margin-right:6px;vertical-align:middle;border-radius:2px}.landing .evidence-list{border:2px solid var(--ink);border-radius:14px;background:var(--card);box-shadow:var(--hard-sm);overflow:hidden}.landing .evidence-list h3{font-family:var(--display);font-weight:700;font-size:1.15rem;padding:18px 22px;border-bottom:2px solid var(--ink);background:var(--paper2)}.landing .ev-row{display:flex;gap:14px;padding:15px 22px;border-bottom:2px dashed var(--ink-soft);font-size:.92rem;align-items:baseline;transition:background .2s}.landing .ev-row:hover{background:rgba(255,212,31,.14)}.landing .ev-row:last-child{border-bottom:none}.landing .ev-sym{font-family:var(--mono);font-weight:700;flex:none;width:22px}.landing .ev-sym.y{color:var(--green)}.landing .ev-sym.n{color:var(--red)}.landing .ev-sym.m{color:#b77e05}.landing .ev-row b{display:block}.landing .ev-row small{color:var(--ink-soft)}.landing .day-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}.landing .plan{background:var(--card);border:2px solid var(--ink);border-radius:14px;box-shadow:var(--hard);overflow:hidden}.landing .plan-head{padding:14px 22px;border-bottom:2px solid var(--ink);background:var(--green-deep);color:var(--paper);font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.14em;display:flex;flex-wrap:wrap;gap:6px 16px}.landing .plan-head .y{color:var(--yellow)}.landing .block{border-bottom:2px solid var(--ink)}.landing .block:last-child{border-bottom:none}.landing .block-head{display:grid;grid-template-columns:64px auto 1fr auto;gap:14px;align-items:center;width:100%;text-align:left;background:none;border:none;padding:18px 22px;font-family:var(--body);transition:background .2s}.landing .block-head:hover{background:rgba(255,212,31,.14)}.landing .block-time{font-size:.72rem;color:var(--ink-soft)}.landing .block-time,.landing .btag{font-family:var(--mono);font-weight:700}.landing .btag{font-size:.6rem;letter-spacing:.1em;padding:4px 9px;border:2px solid var(--ink);border-radius:6px;white-space:nowrap}.landing .btag.warm{background:var(--yellow)}.landing .btag.new{background:#cdebd9}.landing .btag.prac{background:#d4e0fa}.landing .btag.ver{background:#f8d3c8}.landing .block-title{font-weight:700;font-size:1rem}.landing .block-title small{display:block;font-weight:400;color:var(--ink-soft);font-size:.82rem}.landing .chev{font-family:var(--mono);font-weight:700;transition:transform .3s}.landing .block.open .chev{transform:rotate(90deg)}.landing .block-detail{max-height:0;overflow:hidden;transition:max-height .4s ease}.landing .block-detail p{padding:0 22px 20px 100px;font-size:.9rem;color:var(--ink-soft)}.landing .plan-foot{padding:14px 22px;background:var(--paper2);border-top:2px solid var(--ink);font-family:var(--mono);font-size:.62rem;font-weight:700;letter-spacing:.1em;color:var(--green);line-height:1.9}.landing .widget-box h3{font-family:var(--display);font-weight:700;font-size:1.3rem;margin-bottom:12px}.landing .widget-box p{color:var(--ink-soft);font-size:.96rem;margin-bottom:18px}.landing .chip-cloud{display:flex;flex-wrap:wrap;gap:9px}.landing .chip-cloud .chip{transition:transform .15s,background .15s;cursor:default;font-weight:400}.landing .chip-cloud .chip:hover{transform:translateY(-3px) rotate(-1deg);background:var(--yellow)}.landing .day-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}.landing .day-points li{list-style:none;display:flex;gap:12px;font-size:.95rem}.landing .day-points .tick{font-family:var(--mono);font-weight:700;color:var(--green);flex:none}.landing .tutor-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}.landing .mode-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.landing .mode-btn{font-family:var(--mono);font-size:.7rem;font-weight:700;letter-spacing:.1em;padding:9px 15px;border:2px solid var(--ink);border-radius:999px;background:var(--card);transition:.15s;box-shadow:3px 3px 0 var(--ink)}.landing .mode-btn:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink)}.landing .mode-btn.on{background:var(--ink);color:var(--yellow);transform:translate(1px,1px);box-shadow:1px 1px 0 var(--ink)}.landing .chat{background:var(--card);border:2px solid var(--ink);border-radius:14px;box-shadow:var(--hard);overflow:hidden}.landing .chat-head{display:flex;align-items:center;gap:10px;padding:13px 20px;border-bottom:2px solid var(--ink);background:var(--paper2);font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.14em}.landing .chat-body{padding:22px;min-height:330px;display:flex;flex-direction:column;gap:14px}.landing .bub{max-width:82%;padding:12px 16px;border:2px solid var(--ink);border-radius:12px;font-size:.93rem;line-height:1.5}.landing .bub.t{background:var(--paper);border-bottom-left-radius:3px;align-self:flex-start}.landing .bub.u{background:var(--green-deep);color:var(--paper);border-bottom-right-radius:3px;align-self:flex-end}.landing .bub .who{font-family:var(--mono);font-size:.58rem;font-weight:700;letter-spacing:.16em;display:block;margin-bottom:5px;opacity:.65}.landing .qcard{align-self:flex-start;border:2px solid var(--ink);border-radius:12px;background:var(--paper);max-width:86%;overflow:hidden}.landing .qcard .qc-h{font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.14em;padding:8px 14px;background:var(--yellow);border-bottom:2px solid var(--ink)}.landing .qcard .qc-b{padding:12px 14px;font-size:.9rem}.landing .qcard .opt{display:block;padding:7px 12px;border:1.5px solid var(--ink-soft);border-radius:8px;margin:6px 0;font-size:.85rem}.landing .qcard .opt.right{border-color:var(--green);background:#cdebd9;font-weight:700}.landing .qcard .qc-f{font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.1em;color:var(--green);padding:8px 14px;border-top:2px dashed var(--ink-soft)}.landing .conv{display:none;flex-direction:column;gap:14px}.landing .conv.active{display:flex;animation:ld-convIn .4s ease}@keyframes ld-convIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.landing .boundary{margin-top:22px;border:2px solid var(--ink);border-radius:12px;background:var(--green-deep);color:var(--paper);padding:16px 20px;font-size:.9rem;display:flex;gap:14px;align-items:flex-start}.landing .boundary .lock{font-size:1.2rem;flex:none}.landing .boundary b{color:var(--yellow)}.landing .tutor-feats{margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:10px 20px}.landing .tutor-feats li{list-style:none;font-size:.9rem;display:flex;gap:10px}.landing .tutor-feats .tick{font-family:var(--mono);font-weight:700;color:var(--green)}.landing .subj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.landing .subj{border:2px solid var(--ink);border-radius:14px;background:var(--card);padding:26px;position:relative;transition:transform .2s,box-shadow .2s}.landing .subj:hover{transform:translateY(-5px);box-shadow:var(--hard)}.landing .subj .status{position:absolute;top:18px;right:18px}.landing .subj h3{font-family:var(--display);font-weight:800;font-size:1.5rem;letter-spacing:-.01em}.landing .subj .rng{font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.16em;color:var(--green);margin:4px 0 14px}.landing .subj .chips{display:flex;flex-wrap:wrap;gap:8px}.landing .subj .chips .chip{font-weight:400;font-size:.68rem}.landing .subj .more{font-family:var(--mono);font-size:.68rem;color:var(--ink-soft);margin-top:12px}.landing .prereq-box{margin-top:26px;border:2px solid var(--ink);border-radius:14px;background:var(--card);box-shadow:var(--hard-sm);padding:26px}.landing .prereq-box h3{font-family:var(--display);font-weight:700;font-size:1.2rem;margin-bottom:6px}.landing .prereq-box .sub{font-size:.9rem;color:var(--ink-soft);margin-bottom:18px}.landing .plegend{display:flex;flex-wrap:wrap;gap:16px;font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;margin-top:14px}.landing .plegend i{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:6px;vertical-align:-1px;border:2px solid var(--ink)}.landing .trust-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-bottom:44px}.landing .why-card{border:2px solid var(--ink);border-radius:14px;background:var(--card);box-shadow:var(--hard);overflow:hidden;position:relative}.landing .why-tab{background:var(--yellow);border-bottom:2px solid var(--ink);padding:12px 22px;font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.18em;display:flex;gap:10px;align-items:center}.landing .why-body{padding:24px}.landing .why-action{font-family:var(--display);font-weight:800;font-size:1.5rem;letter-spacing:-.01em;margin-bottom:16px}.landing .why-row{display:grid;grid-template-columns:118px 1fr;gap:12px;padding:11px 0;border-top:2px dashed var(--ink-soft);font-size:.92rem;align-items:baseline}.landing .why-row .k{font-family:var(--mono);font-size:.64rem;font-weight:700;letter-spacing:.12em;color:var(--ink-soft)}.landing .mini-bar{height:10px;border:2px solid var(--ink);border-radius:99px;overflow:hidden;background:var(--paper2);margin-top:5px}.landing .mini-bar i{display:block;height:100%;background:var(--yellow)}.landing .mini-bar i.g{background:var(--green)}.landing .ledger{background:var(--green-deep);color:var(--paper);border:2px solid var(--ink);border-radius:14px;box-shadow:var(--hard);overflow:hidden}.landing .ledger h3{font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.18em;padding:14px 22px;border-bottom:2px solid rgba(246,247,241,.25);color:var(--yellow)}.landing .led-row{font-family:var(--mono);font-size:.72rem;padding:13px 22px;border-bottom:1px dashed rgba(246,247,241,.2);display:flex;gap:12px}.landing .led-row:last-child{border-bottom:none}.landing .led-row .id{color:rgba(246,247,241,.45);flex:none}.landing .led-row .ok{color:#7fe0b0}.landing .led-row .no{color:#ff9b85}.landing .led-row .wn{color:var(--yellow)}.landing .notes{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}.landing .note{background:#fff6c2;border:2px solid var(--ink);padding:26px 22px 20px;position:relative;box-shadow:var(--hard-sm);font-family:var(--hand);font-weight:600;font-size:1.32rem;line-height:1.35;transition:transform .2s}.landing .note:first-child{transform:rotate(-1.6deg)}.landing .note:nth-child(2){transform:rotate(1.2deg)}.landing .note:nth-child(3){transform:rotate(-.8deg)}.landing .note:hover{transform:rotate(0) translateY(-5px)}.landing .note:before{content:"";position:absolute;top:-12px;left:50%;transform:translateX(-50%) rotate(-2deg);width:86px;height:24px;background:rgba(255,212,31,.75);border:1px solid rgba(18,40,32,.25)}.landing .note .who{font-family:var(--mono);font-size:.62rem;font-weight:700;letter-spacing:.12em;margin-top:14px;color:var(--ink-soft);display:block}.landing .faq{max-width:820px}.landing .faq-item{border:2px solid var(--ink);border-radius:12px;background:var(--card);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s}.landing .faq-item:hover{box-shadow:var(--hard-sm)}.landing .faq-q{width:100%;display:flex;align-items:center;gap:16px;text-align:left;background:none;border:none;padding:20px 24px;font-family:var(--display);font-weight:700;font-size:1.08rem;letter-spacing:-.01em}.landing .faq-q .pm{margin-left:auto;font-family:var(--mono);font-weight:700;font-size:1.2rem;color:var(--green);flex:none;transition:transform .3s}.landing .faq-item.open .pm{transform:rotate(45deg)}.landing .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}.landing .faq-a p{padding:0 24px 22px;color:var(--ink-soft);font-size:.95rem;max-width:64ch}.landing .faq-a b{color:var(--ink)}.landing .plan-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;margin-top:46px;align-items:stretch}.landing .plan-card{background:var(--card);border:2px solid var(--ink);border-radius:16px;padding:34px 32px 30px;box-shadow:6px 6px 0 var(--ink);display:flex;flex-direction:column;position:relative}.landing .plan-card.featured{background:var(--yellow);box-shadow:8px 8px 0 var(--ink)}.landing .plan-stamp{position:absolute;top:-14px;right:22px;font-family:var(--mono);font-size:.62rem;font-weight:800;letter-spacing:.18em;background:var(--green-deep);color:var(--yellow);border:2px solid var(--ink);border-radius:8px;padding:6px 12px;transform:rotate(3deg)}.landing .plan-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}.landing .plan-top h3{font-family:var(--display);font-size:1.6rem;font-weight:800;letter-spacing:-.02em}.landing .plan-tag{font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.18em;color:var(--green)}.landing .plan-price{display:flex;align-items:baseline;gap:12px;margin:22px 0 6px;flex-wrap:wrap}.landing .plan-amt{font-family:var(--display);font-size:3rem;font-weight:800;letter-spacing:-.03em;line-height:1}.landing .plan-per{font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.16em;color:var(--ink-soft)}.landing .plan-blurb{font-size:.95rem;color:var(--ink-soft);margin:8px 0 18px;max-width:44ch}.landing .plan-items{list-style:none;margin:0 0 26px;padding:0;display:flex;flex-direction:column;gap:10px}.landing .plan-items li{position:relative;padding-left:30px;font-size:.94rem;line-height:1.45;color:var(--ink)}.landing .plan-items li:before{content:"✓";position:absolute;left:0;top:0;font-weight:800;color:var(--green)}.landing .plan-btn{margin-top:auto;display:block;text-align:center;text-decoration:none;font-family:var(--display);font-weight:800;font-size:1.1rem;letter-spacing:-.01em;padding:16px 20px;border:2px solid var(--ink);border-radius:12px;background:var(--green-deep);color:var(--paper);cursor:pointer;transition:.2s}.landing .plan-btn:hover{background:var(--ink);transform:translateY(-2px)}@media (max-width:720px){.landing .plan-grid{grid-template-columns:1fr}}.landing .cta-sec{padding:110px 0}.landing .cta-inner{text-align:left;max-width:860px}.landing .class-pick{display:flex;gap:20px;flex-wrap:wrap;margin:38px 0 34px}.landing .class-btn{font-family:var(--display);font-weight:800;font-size:1.7rem;letter-spacing:-.02em;padding:26px 44px;border:2px solid var(--paper);border-radius:14px;background:transparent;color:var(--paper);transition:.2s;position:relative;text-decoration:none}.landing .class-btn small{display:block;font-family:var(--mono);font-size:.62rem;font-weight:700;letter-spacing:.2em;margin-top:6px;opacity:.7}.landing .class-btn:hover{background:var(--paper);color:var(--green-deep);transform:translateY(-4px)}.landing .cta-micro{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;color:#9dbfaf;margin-top:26px}.landing .legal-main{padding:96px 0 72px;background:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px),var(--paper);background-size:28px 28px;min-height:60vh}.landing .legal-wrap{max-width:760px}.landing .legal-head{border-bottom:2px solid var(--ink);padding-bottom:28px;margin-bottom:36px}.landing .legal-head h1{margin:14px 0 10px}.landing .legal-meta{font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.14em;color:var(--green)}.landing .legal-sec{margin-bottom:34px}.landing .legal-sec h2{font-family:var(--display);font-size:1.3rem;font-weight:800;letter-spacing:-.01em;margin-bottom:12px}.landing .legal-sec h3{font-family:var(--mono);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--green-deep);margin:22px 0 10px}.landing .legal-sec p{color:var(--ink-soft);font-size:.98rem;line-height:1.65;margin:0 0 12px;max-width:64ch}.landing .legal-sec ul{list-style:none;margin:0;padding:0}.landing .legal-sec ul li{position:relative;padding-left:26px;color:var(--ink-soft);font-size:.98rem;line-height:1.65;margin-bottom:10px;max-width:64ch}.landing .legal-sec ul li:before{content:"—";position:absolute;left:0;color:var(--green);font-weight:700}.landing .legal-sec a{color:var(--green);font-weight:700;text-decoration:underline;text-underline-offset:3px}.landing .legal-sec b{color:var(--ink)}.landing .legal-email a{font-family:var(--mono);font-size:1.4rem;font-weight:700;color:var(--green-deep);text-decoration:none;border-bottom:3px solid var(--yellow)}@media (max-width:720px){.landing .legal-main{padding:72px 0 56px}}.landing-footer{border-top:2px solid var(--ink);padding:64px 0 34px;background:var(--paper2)}.landing .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:48px}.landing .foot-grid h4{font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.2em;color:var(--green);margin-bottom:16px}.landing .foot-grid a{display:block;text-decoration:none;font-size:.92rem;padding:5px 0;color:var(--ink-soft);transition:color .15s,padding-left .15s}.landing .foot-grid a:hover{color:var(--ink);padding-left:6px}.landing .foot-tag{font-family:var(--display);font-weight:700;font-size:1.25rem;margin:14px 0 8px;letter-spacing:-.01em}.landing .foot-fine{font-size:.8rem;color:var(--ink-soft);max-width:34ch}.landing .foot-bottom{border-top:2px dashed var(--ink-soft);padding-top:22px;display:flex;flex-wrap:wrap;gap:12px 30px;justify-content:space-between;font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;color:var(--ink-soft)}.landing .soon{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.64rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;background:var(--yellow);border:2px solid var(--ink);border-radius:999px;padding:5px 12px;box-shadow:3px 3px 0 var(--ink)}@media (max-width:1020px){.landing .day-grid,.landing .diag-grid,.landing .engine-grid,.landing .hero-grid,.landing .problem-grid,.landing .trust-grid,.landing .tutor-grid{grid-template-columns:1fr}.landing .problem-left{position:static}.landing .foot-grid,.landing .notes,.landing .subj-grid{grid-template-columns:1fr 1fr}.landing .demo-body{height:420px}}@media (max-width:900px){.landing .nav-cta,.landing .nav-links{display:none}.landing .burger{display:block;margin-left:auto}.landing .menu{display:block;overflow:hidden;max-height:0;transition:max-height .35s ease;border-top:0 solid var(--ink)}.landing .menu.open{max-height:420px;border-top:2px solid var(--ink)}.landing .menu a{display:block;text-decoration:none;font-weight:600;padding:15px 24px;border-bottom:1px dashed var(--ink-soft)}.landing .menu a:hover{background:rgba(255,212,31,.2)}}@media (max-width:640px){.landing .sec{padding:72px 0}.landing .foot-grid,.landing .notes,.landing .subj-grid,.landing .tutor-feats{grid-template-columns:1fr}.landing .demo-body{height:470px}.landing .meter{grid-template-columns:110px 1fr 44px}.landing .block-head{grid-template-columns:auto 1fr auto;gap:10px}.landing .block-time{display:none}.landing .block-detail p{padding-left:22px}.landing .class-btn{flex:1;padding:22px 18px;font-size:1.35rem;text-align:center}.landing .why-row{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.landing *,.landing :after,.landing :before{animation-duration:1ms!important;transition-duration:1ms!important}.landing .ticker-track{animation:none}}