@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:200 800;font-display:swap;src:url(../media/0b1dc8ddaa74ba49-s.1w1m1wqmjasxa.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:200 800;font-display:swap;src:url(../media/e629b5bc06499d58-s.1y3v-klcv8xov.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:200 800;font-display:swap;src:url(../media/1a099d89ee94ee96-s.15dvesjzf7814.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:200 800;font-display:swap;src:url(../media/fba5a26ea33df6a3-s.p.08ssgmy_tb90r.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Plus Jakarta Sans Fallback;src:local(Arial);ascent-override:98.88%;descent-override:21.15%;line-gap-override:0.0%;size-adjust:104.98%}.plus_jakarta_sans_6cbc0d5f-module__dx4leq__className{font-family:Plus Jakarta Sans,Plus Jakarta Sans Fallback;font-style:normal}.plus_jakarta_sans_6cbc0d5f-module__dx4leq__variable{--font-jakarta:"Plus Jakarta Sans", "Plus Jakarta Sans Fallback"}
@font-face{font-family:STIX Two Text;font-style:italic;font-weight:400 700;font-display:swap;src:url(../media/169964a708a16db9-s.0n3rc8lf61k6o.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:STIX Two Text;font-style:italic;font-weight:400 700;font-display:swap;src:url(../media/f73554b76b3968b4-s.1szap0sm0xuhn.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:STIX Two Text;font-style:italic;font-weight:400 700;font-display:swap;src:url(../media/6a5ee69d6a4389bc-s.0eoora2vj-zmt.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:STIX Two Text;font-style:italic;font-weight:400 700;font-display:swap;src:url(../media/844757ee197428ee-s.2kljua520w9vz.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:STIX Two Text;font-style:italic;font-weight:400 700;font-display:swap;src:url(../media/5e56e1bd35970baf-s.41l_2w43chchu.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:STIX Two Text;font-style:italic;font-weight:400 700;font-display:swap;src:url(../media/a1c7a484c510d19c-s.p.0wluu3xg-hx03.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:STIX Two Text;font-style:normal;font-weight:400 700;font-display:swap;src:url(../media/b1d5dad78a0d12b5-s.1xtj9yne7zfhx.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:STIX Two Text;font-style:normal;font-weight:400 700;font-display:swap;src:url(../media/17381594d15ffe51-s.0x6g2-e0030vd.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:STIX Two Text;font-style:normal;font-weight:400 700;font-display:swap;src:url(../media/f8ed89659f8cd9f4-s.3813ocq4ejija.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:STIX Two Text;font-style:normal;font-weight:400 700;font-display:swap;src:url(../media/ea20f3f596d3a0b3-s.322bd5_47qnof.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:STIX Two Text;font-style:normal;font-weight:400 700;font-display:swap;src:url(../media/1995f8c0ebebeccd-s.3_ul9q3tcrf5j.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:STIX Two Text;font-style:normal;font-weight:400 700;font-display:swap;src:url(../media/62c2ceb5e93c1826-s.p.03874znv80-ea.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:STIX Two Text Fallback;src:local(Times New Roman);ascent-override:72.67%;descent-override:22.7%;line-gap-override:23.84%;size-adjust:104.86%}.stix_two_text_9a3cd182-module__2L8r-G__className{font-family:STIX Two Text,STIX Two Text Fallback}.stix_two_text_9a3cd182-module__2L8r-G__variable{--font-stix:"STIX Two Text", "STIX Two Text Fallback"}
:root{--color-ink:#06080f;--color-ink-2:#0b0e17;--color-paper:#faf9f4;--color-card:#fff;--color-cream:#f5f2e6;--color-primary:#1d6517;--color-primary-deep:#135029;--color-primary-text:#1d6517;--color-primary-wash:#13502914;--color-accent:#ff7a00;--color-accent-soft:#ffab5c;--color-accent-text:#b45309;--color-accent-wash:#ff7a001f;--color-highlight:#c9e8a8;--color-muted:#54655b;--color-rule:#e5e1d4;--color-rule-soft:#efebdf;--color-grid:#06080f0d;--color-rule-ink:#faf9f424;--color-danger:#b91c1c;--color-success:#15803d;--color-ink-wash:#06080f0a;--font-display:var(--font-jakarta), "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-ui:var(--font-jakarta), "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-serif:var(--font-stix), "STIX Two Text", Georgia, "Times New Roman", serif;--radius-btn:4px;--radius-sm:2px;--radius-md:4px;--radius-lg:6px;--shadow-soft:0 1px 2px #06080f0d;--shadow-lift:0 16px 40px -20px #06080f47;--shadow-brand:0 14px 32px -14px #13502966}*,:before,:after{box-sizing:border-box}html{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;scroll-behavior:smooth;background:var(--color-paper);font-size:16.15px}body{background:var(--color-paper);color:var(--color-ink);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;max-width:100%;margin:0;font-size:1rem;line-height:1.5;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);letter-spacing:-.02em;color:inherit}h1,h2{text-wrap:balance}p,li,figcaption,.subtitle{font-family:var(--font-serif)}p{text-wrap:pretty}a{color:inherit;text-underline-offset:2px;text-decoration:underline;transition:color .15s}a:hover{color:var(--color-accent-text)}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}summary{cursor:pointer}details>summary::-webkit-details-marker{display:none}section[id]{scroll-margin-top:76px}.container{width:100%;max-width:1024px;margin:0 auto;padding:0 16px}.container-narrow{width:100%;max-width:720px;margin:0 auto;padding:0 16px}.stack{gap:16px;display:grid}.stack-sm{gap:8px;display:grid}.actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.flex-between{justify-content:space-between;align-items:center;gap:12px;display:flex}.flex-gap{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.grid-2{grid-template-columns:1fr 1fr;gap:24px;display:grid}.grid-3{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.text-center{text-align:center}.w-full{width:100%}.surface{background:var(--color-card);border-block:1px solid var(--color-rule);color:var(--color-ink)}.muted{color:var(--color-muted)}.danger{color:var(--color-danger)}.success{color:var(--color-success)}.small{font-size:.875rem}.tiny{font-size:.75rem}.yx-label{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.14em;color:var(--color-muted);margin-bottom:4px;font-size:.6875rem;display:block}.field{gap:4px;margin-bottom:12px;display:grid}.field label{color:var(--color-muted);font-size:.875rem}input[type=text],input[type=email],input[type=password],input[type=number],input[type=search],input[type=url],select,textarea{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);width:100%;color:var(--color-ink);max-width:100%;padding:8px 10px;font-size:16px;transition:border-color .16s,box-shadow .16s}input:focus-visible,textarea:focus-visible,select:focus-visible{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-wash);outline:none}input[type=checkbox],input[type=radio]{accent-color:var(--color-primary)}textarea{resize:vertical;min-height:96px}.checkbox-row{align-items:flex-start;gap:8px;display:flex}.checkbox-row input{width:auto;margin-top:3px}progress{appearance:none;background:var(--color-ink-wash);border:none;border-radius:0;width:100%;height:6px;overflow:hidden}progress::-webkit-progress-bar{background:0 0}progress::-webkit-progress-value{background:var(--color-primary);border-radius:0;transition:width .3s}progress::-moz-progress-bar{background:var(--color-primary);border-radius:0}.yx-btn{border:1.5px solid var(--color-ink);border-radius:var(--radius-btn);color:var(--color-ink);letter-spacing:-.01em;background:0 0;justify-content:center;align-items:center;gap:7px;max-width:100%;padding:10px 18px;font-size:.9rem;font-weight:700;text-decoration:none;transition:background-color .16s,border-color .16s,color .16s,transform .16s,box-shadow .16s;display:inline-flex}.yx-btn svg{transition:transform .16s}.yx-btn:hover{border-color:var(--color-primary);color:var(--color-primary-text);background:var(--color-primary-wash)}.yx-btn:hover svg{transform:translate(3px)}.yx-btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff;box-shadow:var(--shadow-soft)}.yx-btn-primary:hover{background:var(--color-primary-deep);border-color:var(--color-primary-deep);color:#fff;box-shadow:var(--shadow-brand);transform:translateY(-1px)}.yx-btn-paper{background:var(--color-cream);border-color:var(--color-cream);color:var(--color-primary)}.yx-btn-paper:hover{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-ink);transform:translateY(-1px)}.yx-btn-ghost{color:var(--color-muted);background:0 0;border-color:#0000;padding:4px}.yx-btn-ghost:hover{color:var(--color-ink);background:0 0;border-color:#0000}.yx-btn:active{transform:translateY(1px)}.wordmark{letter-spacing:-.035em;color:var(--color-accent);font-size:1.3rem;font-weight:200;font-family:var(--font-display);align-items:center;text-decoration:none;display:inline-flex}.wordmark-logo{object-fit:contain;flex-shrink:0;width:34px;height:34px;margin-right:6px}.wordmark:hover{color:var(--color-accent-text)}.wordmark span{color:inherit}.nav{z-index:50;border-bottom:1px solid var(--color-rule);background:var(--color-paper);background:color-mix(in srgb, var(--color-paper) 86%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;gap:16px;max-width:1024px;margin:0 auto;padding:12px 16px;display:flex}.nav-inner-constrained{max-width:1024px}.nav-desktop{align-items:center;gap:16px;display:none}.nav-desktop a{color:var(--color-ink);font-size:.92rem;font-weight:600;text-decoration:none;position:relative}.nav-desktop a:after{content:"";background:var(--color-accent);transform-origin:0;height:2px;transition:transform .18s;position:absolute;bottom:-4px;left:0;right:0;transform:scaleX(0)}.nav-desktop a:hover{color:var(--color-primary-text)}.nav-desktop a:hover:after{transform:scaleX(1)}.nav-cta{border:1.5px solid var(--color-ink);color:var(--color-ink);border-radius:var(--radius-btn);background:0 0;padding:7px 14px;font-size:.875rem;font-weight:700;text-decoration:none;transition:background-color .16s,color .16s,border-color .16s}.nav-cta:hover{background:var(--color-primary-wash);color:var(--color-paper);border-color:var(--color-ink)}.nav-toggle{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);padding:6px 10px;transition:border-color .16s}.nav-toggle:hover{border-color:var(--color-primary)}.nav-mobile{border-top:1px solid var(--color-rule);background:var(--color-paper);gap:8px;padding:12px 16px;display:grid}.nav-mobile a{color:var(--color-ink);padding:8px 0;font-weight:600;text-decoration:none}.nav-mobile a:hover{color:var(--color-primary-text)}.nav-mobile[hidden]{display:none}.panel{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:var(--color-ink);max-width:100%;box-shadow:var(--shadow-soft);padding:20px}.panel-flat{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:var(--color-ink)}.panel-flat:hover{border-color:var(--color-primary)}.table-wrap{-webkit-overflow-scrolling:touch;overflow-x:auto}table{border-collapse:collapse;width:100%;max-width:100%}th,td{border-bottom:1px solid var(--color-rule);text-align:left;vertical-align:top;padding:8px}th{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);font-size:.72rem}.markdown{overflow-wrap:anywhere;font-size:1rem;line-height:1.7;font-family:var(--font-serif);color:inherit}.markdown>:first-child{margin-top:0}.markdown>:last-child{margin-bottom:0}.markdown h1,.markdown h2,.markdown h3,.markdown h4{font-weight:700;line-height:1.3;font-family:var(--font-display);margin-top:1.5em;margin-bottom:.5em}.markdown h1{font-size:1.5em}.markdown h2{font-size:1.3em}.markdown h3{font-size:1.15em}.markdown p,.markdown ul,.markdown ol{margin-top:.75em;margin-bottom:.75em}.markdown ul,.markdown ol{padding-left:1.5em}.markdown pre{border:1px solid var(--color-rule);background:var(--color-ink-wash);border-radius:var(--radius-md);white-space:pre-wrap;word-break:break-word;padding:12px;overflow-x:auto}.markdown code{font-family:var(--font-ui);border:1px solid var(--color-rule);border-radius:3px;padding:0 4px;font-size:.9em}.markdown pre code{border:none;padding:0}.markdown blockquote{border-left:3px solid var(--color-accent);color:var(--color-muted);margin:.75em 0;padding-left:12px}.markdown a{color:var(--color-primary-text);word-break:break-all}.markdown a:hover{color:var(--color-accent-text)}.problem-card{gap:16px;display:grid}.problem-meta{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);font-size:.75rem}.problem-input-wrap{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);overflow:hidden}.problem-answer-row{align-items:stretch;display:flex}.problem-answer-row input{min-width:0;font-family:var(--font-ui);border:none;border-radius:0;flex:1;padding:10px}.problem-answer-row input:focus-visible{box-shadow:none;outline:none}.problem-answer-row button{border:none;border-left:1px solid var(--color-rule);background:var(--color-card);padding:10px 16px;font-weight:700}.problem-answer-row button:hover{background:var(--color-primary-wash);color:var(--color-primary-text)}.math-preview{border-top:1px solid var(--color-rule);align-items:center;min-height:2.75rem;padding:8px 10px;display:flex;overflow-x:auto}.math-output{word-break:break-word;overflow-wrap:anywhere;min-height:1.5em}.math-keyboard{border-bottom:1px solid var(--color-rule);background:var(--color-ink-wash);flex-wrap:wrap;gap:4px;padding:8px;display:flex;overflow-x:auto}.math-keyboard button{border:1px solid var(--color-rule);background:var(--color-card);min-width:36px;min-height:36px;color:var(--color-ink);border-radius:3px;padding:4px 8px;transition:border-color .16s,color .16s}.math-keyboard button:hover{border-color:var(--color-primary);color:var(--color-primary-text)}.math-key-label{pointer-events:none;justify-content:center;align-items:center;display:inline-flex}.math-key-label .katex{font-size:1.1em;line-height:1}.answer-comparison{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);color:var(--color-ink);overflow:hidden}.answer-comparison-header{border-bottom:1px solid var(--color-rule);justify-content:space-between;align-items:center;gap:8px;padding:8px 12px;display:flex}.answer-comparison.correct .answer-comparison-header{background:#15803d14}.answer-comparison.incorrect .answer-comparison-header{background:#b91c1c14}.answer-comparison-grid{background:var(--color-rule);grid-template-columns:1fr 1fr;gap:1px;display:grid}.answer-comparison-item{background:var(--color-card);padding:12px}.radar-wrap{width:100%;max-width:480px;margin:0 auto}.radar-chart{max-width:100%;height:auto;margin:0 auto;display:block}.radar-chart text{font-family:var(--font-ui)}.radar-empty,.radar-fallback{border:1px solid var(--color-rule);border-radius:var(--radius-md);color:var(--color-muted);padding:16px}.solution-panel{border-left:3px solid var(--color-primary);background:var(--color-primary-wash);border-radius:0 var(--radius-md) var(--radius-md) 0;margin-top:4px;padding:12px 16px}.solution-panel .yx-label{color:var(--color-primary-text)}.forum-shell{flex-direction:column;height:100vh;display:flex;overflow:hidden}.forum-body{flex:1;min-height:0;display:flex;overflow:hidden;flex-wrap:nowrap!important}.forum-main{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex;flex-wrap:nowrap!important}.forum-scroll{-webkit-overflow-scrolling:touch;overscroll-behavior:contain;flex:1;min-height:0;overflow-y:auto}.chat-item .chat-dots{opacity:0}.chat-item:hover .chat-dots{opacity:1}.status-badge{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;border-radius:var(--radius-sm);align-items:center;padding:2px 8px;font-size:.65rem;display:inline-flex}.status-preview{background:var(--color-accent-wash);color:var(--color-accent-text)}.status-coming-soon{background:var(--color-ink-wash);color:var(--color-muted)}.soon-chip{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;color:var(--color-accent-text);background:var(--color-accent-wash);border-radius:var(--radius-sm);white-space:nowrap;align-items:center;gap:7px;padding:4px 10px;font-size:.65rem;display:inline-flex}.pulse-dot{background:var(--color-accent);border-radius:0;flex-shrink:0;width:6px;height:6px;animation:1.8s ease-in-out infinite pulse}.auth-timeout{z-index:1000;border:1px solid var(--color-danger);border-radius:var(--radius-md);background:var(--color-card);max-width:320px;color:var(--color-ink);box-shadow:var(--shadow-lift);padding:12px;position:fixed;bottom:16px;right:16px}.bento{background:var(--color-rule);border:1px solid var(--color-rule);border-radius:var(--radius-lg);gap:1px;display:grid;overflow:hidden}.bento>*{background:var(--color-card);color:var(--color-ink);margin:0;padding:22px}.bento-ink{background:var(--color-rule-ink);border-color:var(--color-rule-ink)}.bento-ink>*{background:var(--color-ink);color:var(--color-paper)}.section-ink{background:var(--color-ink);color:var(--color-paper);position:relative}.section-ink:before{content:"";pointer-events:none;background-image:linear-gradient(#faf9f409 1px,#0000 1px),linear-gradient(90deg,#faf9f409 1px,#0000 1px);background-size:32px 32px;position:absolute;inset:0}.section-ink>.container{position:relative}.section-ink .yx-label{color:var(--color-accent-soft)}.section-ink .muted{color:#faf9f4b8}.section-ink .subtitle{color:#faf9f4e0}.section-ink a:hover{color:var(--color-accent-soft)}.section-ink :focus-visible{outline-color:var(--color-accent-soft)}::selection{background:var(--color-highlight);color:var(--color-ink)}.hero{padding:56px 0 64px;position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background-image:linear-gradient(var(--color-grid) 1px, transparent 1px), linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);background-size:28px 28px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000 55%,#0000);mask-image:linear-gradient(#000 55%,#0000)}.hero-grid{align-items:center;gap:48px;display:grid;position:relative}.hero-title{letter-spacing:-.035em;color:var(--color-ink);margin:10px 0 0;font-size:clamp(3.4rem,20vw,4.8rem);font-weight:800;line-height:.98}.hero-title>span{width:fit-content;display:block}.hero-title .t-accent{color:var(--color-accent)}.hero .subtitle{max-width:34rem;color:var(--color-ink);margin:20px 0 0}.hero .actions{margin-top:26px}.micro-stats{border-top:1px solid var(--color-rule);flex-wrap:wrap;margin-top:28px;padding-top:14px;display:flex}.micro-stat{border-right:1px solid var(--color-rule);margin-right:20px;padding-right:20px}.micro-stat:last-child{border-right:0;margin-right:0;padding-right:0}.micro-stat b{font-family:var(--font-display);letter-spacing:-.02em;color:var(--color-ink);font-size:1.15rem;display:block}.micro-stat span{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);font-size:.65rem}.hero-console{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:var(--color-ink);box-shadow:var(--shadow-lift);overflow:hidden}.mod{border-bottom:1px solid var(--color-rule);padding:18px 20px}.mod:last-child{border-bottom:0}.mod-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.mod-head .yx-label{margin:0}.fake-answer code{font-family:var(--font-ui);color:var(--color-ink);font-size:.95rem}.fake-answer .ok{color:var(--color-success);font-size:.8rem;font-weight:700;font-family:var(--font-ui);letter-spacing:.06em;text-transform:uppercase}.seg-done{background:var(--color-primary)}.seg-now{background:var(--color-accent)}.mod-cap{color:var(--color-muted);font-size:.75rem;font-family:var(--font-ui);margin:0}.section{padding:72px 0}.section-head{gap:10px;max-width:640px;margin-bottom:40px;display:grid}.section-head h2{letter-spacing:-.03em;margin:0;font-size:clamp(1.8rem,3.6vw,2.6rem);line-height:1.05}.section-head .subtitle{margin:0;font-size:1.05rem}.try-grid{align-items:center;gap:40px;display:grid}.try-facts{gap:10px;margin-top:22px;display:grid}.try-fact{font-family:var(--font-ui);color:#faf9f4d9;grid-template-columns:10px 1fr;align-items:start;gap:10px;font-size:.85rem;display:grid}.try-fact b{color:#faf9f4;font-variant-numeric:tabular-nums}.sq{background:#faf9f459;width:8px;height:8px;margin-top:5px}.sq-accent{background:var(--color-accent)}.console{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:var(--color-ink);overflow:hidden;box-shadow:0 28px 70px -24px #000000bf}.console .mod{border-bottom:1px solid var(--color-rule)}.console .yx-label{color:var(--color-muted)}.console .markdown{color:var(--color-ink);font-size:1.05rem}.console-src{font-family:var(--font-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--color-muted);margin:10px 0 0;font-size:.68rem}.live-chip{background:var(--color-accent-wash);color:var(--color-accent-text);border-radius:var(--radius-sm);font-family:var(--font-ui);letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;border:1px solid #b4530959;align-items:center;gap:7px;padding:3px 9px;font-size:.62rem;display:inline-flex}.live-dot{background:var(--color-accent);width:6px;height:6px;animation:1.8s ease-in-out infinite pulse}.console .math-keyboard{background:var(--color-ink-wash);border-bottom:1px solid var(--color-rule);border-top:0}.console .math-keyboard button{background:var(--color-card);border-color:var(--color-rule);color:var(--color-ink)}.console .math-keyboard button:hover{border-color:var(--color-primary);color:var(--color-primary-text)}.console-row{align-items:stretch;display:flex}.console-row input{background:var(--color-card);min-width:0;color:var(--color-ink);font-family:var(--font-ui);border:0;border-radius:0;flex:1;padding:14px 16px;font-size:1rem}.console-row input::placeholder{color:var(--color-muted)}.console-row input:focus-visible{outline:2px solid var(--color-primary);outline-offset:-2px;box-shadow:none}.console-row button{border:0;border-left:1px solid var(--color-rule);background:var(--color-accent);color:var(--color-ink);font-family:var(--font-ui);letter-spacing:.12em;text-transform:uppercase;padding:14px 22px;font-size:.78rem;font-weight:800;transition:background-color .16s}.console-row button:not(:disabled):hover{background:var(--color-accent-soft)}.console-row button:disabled{opacity:.45}.console-result{padding:16px 20px}.console-result.correct{background:#15803d14}.console-result.incorrect{background:#b91c1c14}.verdict{font-family:var(--font-display);letter-spacing:.02em;font-weight:800}.verdict-ok{color:var(--color-success)}.verdict-bad{color:var(--color-danger)}.console-result .muted{color:var(--color-muted)}.console-result summary{color:var(--color-primary-text);font-weight:700;font-family:var(--font-ui);font-size:.9rem}.console-result .markdown{color:var(--color-ink);font-size:.9rem}.console-foot{font-family:var(--font-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--color-muted);flex-wrap:wrap;justify-content:space-between;gap:12px;padding:12px 20px;font-size:.68rem;display:flex}.console-foot b{color:var(--color-ink);font-variant-numeric:tabular-nums}.console-foot .warn b{color:var(--color-danger)}.pain-grid{align-items:center;gap:40px;display:grid}.check-list{gap:14px;max-width:560px;margin:20px 0 0;padding:0;list-style:none;display:grid}.check-list li{grid-template-columns:26px 1fr;align-items:start;gap:12px;display:grid}.check-list li p{margin:0}.check-list strong{font-family:var(--font-display)}.mark{font-family:var(--font-display);margin-top:3px;font-weight:800;display:inline-flex}.mark-bad{color:var(--color-danger)}.mark-ok{color:var(--color-primary)}.scorecard{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:var(--color-ink);box-shadow:var(--shadow-lift);width:100%;max-width:420px;margin:0 auto;overflow:hidden}.scorecard-bar{background:var(--color-ink);color:var(--color-paper);justify-content:space-between;align-items:center;gap:12px;padding:12px 18px;display:flex}.scorecard-bar h3{letter-spacing:.01em;margin:0;font-size:.95rem}.score-badge{color:#fca5a5;font-family:var(--font-ui);border-radius:var(--radius-sm);font-variant-numeric:tabular-nums;background:#b91c1c38;padding:3px 10px;font-size:.85rem;font-weight:800}.scorecard .mod{padding:14px 18px}.scorecard h4{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;color:var(--color-muted);margin:0 0 8px;font-size:.7rem}.score-row{font-family:var(--font-ui);justify-content:space-between;gap:12px;padding:6px 0;font-size:.92rem;display:flex}.score-row .val{font-variant-numeric:tabular-nums;font-weight:700}.ledger{border-bottom:1px solid var(--color-rule)}.ledger-row{border-top:1px solid var(--color-rule);grid-template-columns:96px 1fr auto;align-items:start;gap:20px;padding:22px 8px;transition:background-color .18s;display:grid}.ledger-row:hover{background:var(--color-ink-wash)}.ledger-num{font-family:var(--font-display);color:#0000;-webkit-text-stroke:1.4px var(--color-ink);font-variant-numeric:tabular-nums;font-size:clamp(2rem,4vw,2.6rem);font-weight:800;line-height:1;transition:color .2s,-webkit-text-stroke-color .2s}.ledger-row:hover .ledger-num{color:var(--color-accent);-webkit-text-stroke-color:var(--color-accent)}@supports not (-webkit-text-stroke:1px black){.ledger-num{color:var(--color-ink)}.ledger-row:hover .ledger-num{color:var(--color-accent)}}.ledger-body h3{margin:2px 0 6px;font-size:1.15rem}.ledger-body p{max-width:46ch;margin:0}.ledger-tag{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);white-space:nowrap;padding-top:8px;font-size:.65rem}.punchline{max-width:52ch;margin:28px 0 0;font-size:1.05rem}.toolkit-bento{grid-template-columns:1fr}.tile h3{margin:0 0 6px;font-size:1.05rem}.tile p{margin:0}.tile-num{font-family:var(--font-ui);letter-spacing:.14em;color:var(--color-accent-text);margin-bottom:10px;font-size:.7rem;display:block}.stat b{font-family:var(--font-display);letter-spacing:-.03em;color:var(--color-accent);font-variant-numeric:tabular-nums;font-size:clamp(2rem,4.5vw,2.8rem);font-weight:800;display:block}.stat span{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:#faf9f4b8;font-size:.68rem}.proof-who b{font-family:var(--font-ui);color:var(--color-paper);font-size:.88rem;display:block}.proof-who span{font-family:var(--font-ui);color:#faf9f4a6;font-size:.72rem}.faq-list{border-bottom:1px solid var(--color-rule);max-width:760px}.faq{border-top:1px solid var(--color-rule)}.faq summary{align-items:baseline;gap:16px;padding:18px 4px;list-style:none;display:flex}.faq-num{font-family:var(--font-ui);color:var(--color-accent-text);flex-shrink:0;width:2.4rem;font-size:.72rem}.faq-q{font-family:var(--font-display);letter-spacing:-.01em;flex:1;font-size:1.05rem;font-weight:700}.faq-icon{font-family:var(--font-ui);color:var(--color-muted);font-size:1.3rem;line-height:1;transition:transform .2s,color .2s}.faq[open] .faq-icon{color:var(--color-accent);transform:rotate(45deg)}.faq-a{color:var(--color-muted);max-width:62ch;margin:0;padding:0 4px 20px calc(2.4rem + 16px)}.band{color:var(--color-paper);background:linear-gradient(155deg, #2a8520 0%, var(--color-primary) 42%, #0f3d1f 100%);padding:80px 0;position:relative;overflow:hidden}.band:before{content:"";pointer-events:none;background-image:linear-gradient(#faf9f40d 1px,#0000 1px),linear-gradient(90deg,#faf9f40d 1px,#0000 1px);background-size:32px 32px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#0000 30%,#000000e6);mask-image:linear-gradient(#0000 30%,#000000e6)}.band-inner{gap:14px;max-width:640px;display:grid;position:relative}.band .yx-label{color:var(--color-accent-soft);margin:0}.band h2{letter-spacing:-.03em;color:#fbf9f0;margin:0;font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.02}.band .subtitle{color:#f5f2e6d1;margin:0}.band .actions{margin-top:10px}.band-micro{font-family:var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:#f5f2e69e;margin:6px 0 0;font-size:.68rem}.band :focus-visible{outline-color:var(--color-accent-soft)}.site-footer{background:var(--color-ink);color:var(--color-paper);border-top:1px solid #faf9f41f;padding:36px 0 44px}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px 24px;display:flex}.footer-brand{font-family:var(--font-display);letter-spacing:-.03em;color:var(--color-paper);margin:0;font-size:1.15rem;font-weight:800}.footer-brand span{color:var(--color-accent)}.footer-tag{color:#faf9f499;font-size:.9rem;font-style:italic;font-family:var(--font-serif);margin:2px 0 0}.footer-links{flex-wrap:wrap;gap:16px;display:flex}.footer-links a{color:#faf9f4b3;font-size:.875rem;font-weight:600;text-decoration:none}.footer-links a:hover{color:var(--color-accent-soft)}.footer-micro{width:100%;font-family:var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:#faf9f473;margin:8px 0 0;font-size:.62rem}.site-footer .muted{color:#faf9f499}.dashboard-nav-center{align-items:center;gap:24px;margin:0 auto;display:none}.dashboard-nav-center a{color:var(--color-muted);font-size:.9rem;font-weight:600;text-decoration:none;transition:color .15s}.dashboard-nav-center a:hover{color:var(--color-accent-text)}@keyframes fade-up{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes pulse{50%{box-shadow:0 0 0 4px var(--color-accent-wash)}}.rise{animation:.55s cubic-bezier(.22,.65,.25,1) both fade-up;animation-delay:calc(var(--d,0) * 1ms)}@supports (animation-timeline:view()){@media (prefers-reduced-motion:no-preference){.reveal{animation:linear both fade-up;animation-timeline:view();animation-range:entry entry 42%}}}@media (min-width:640px){.container,.container-narrow{padding:0 24px}.stats-row{grid-template-columns:repeat(3,1fr)}.proof-bento{grid-template-columns:1fr 1fr}}@media (min-width:768px){.nav-desktop{display:flex}.nav-toggle,.nav-mobile{display:none}.show-mobile-only,.hide-desktop{display:none!important}.dashboard-nav-center{display:flex}.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}.hero{align-items:center;min-height:min(760px,92svh);padding:96px 0 88px;display:flex}.hero-grid{grid-template-columns:1.05fr .95fr;gap:40px}.hero-console{justify-self:end;width:100%;max-width:460px}.section{padding:96px 0}.try-grid{grid-template-columns:.9fr 1.1fr}.pain-grid{grid-template-columns:1.1fr .9fr}.toolkit-bento{grid-template-columns:1fr 1fr}.tile-radar{grid-column:1/-1}.faq-a{padding-left:calc(2.4rem + 16px)}}@media (max-width:767px){.hide-mobile{display:none!important}.show-mobile-only{display:block}.grid-2,.grid-3{grid-template-columns:1fr}h1:not(.hero-title){font-size:clamp(1.75rem,8vw,2.25rem)!important}h2{font-size:clamp(1.35rem,6vw,1.75rem)!important}.ledger-row{grid-template-columns:56px 1fr;gap:14px}.ledger-tag{grid-column:2;padding-top:0}.faq-a{padding-left:4px}.micro-stat{margin-right:14px;padding-right:14px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important;animation-delay:0s!important}}@media print{.auth-timeout,.no-print,.hero:before,.band:before,.section-ink:before{display:none!important}}.engine-log{gap:2px;display:grid}.log-line{font-family:var(--font-ui);color:var(--color-ink);grid-template-columns:10px 1fr;align-items:start;gap:10px;margin:0;padding:6px 0;font-size:.85rem;display:grid}.log-mark{width:8px;height:8px;margin-top:5px}.log-mark.ok{background:var(--color-primary)}.log-mark.miss{background:var(--color-danger)}.log-mark.serve{background:var(--color-accent);animation:1.8s ease-in-out infinite pulse}.edge-track{grid-template-columns:repeat(5,1fr);gap:4px;margin-bottom:8px;display:grid}.edge-seg{background:var(--color-rule);height:6px}.edge-seg.done{background:var(--color-primary)}.edge-seg.now{background:var(--color-accent)}.edge-ticks{text-align:center;font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;color:var(--color-muted);grid-template-columns:repeat(5,1fr);margin-bottom:10px;font-size:.6rem;display:grid}.tier-free-bar{flex-wrap:wrap;grid-column:1/-1;justify-content:space-between;align-items:center;gap:12px 20px;padding:16px 20px;display:flex}.tier-free-bar h3{letter-spacing:-.02em;margin:0;font-size:1.3rem}.tier-free-bar p{color:#faf9f4bf;max-width:56ch;margin:0;font-size:.9rem}.tier-hot{box-shadow:inset 0 3px 0 var(--color-accent);background:#ff7a0012}.tier-hot .tier-price{color:var(--color-accent)}.tier-hot .tier-price span{color:#faf9f499}.price-was{color:#faf9f473;letter-spacing:0;margin-right:10px;font-size:1.05rem;font-weight:600;text-decoration:line-through}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.section-ink .yx-btn{color:var(--color-paper);border-color:#faf9f466}.section-ink .yx-btn:hover{border-color:var(--color-paper);color:var(--color-paper);background:#faf9f414}.section-ink .yx-btn-primary,.section-ink .yx-btn-primary:hover{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.section-ink .live-chip{color:var(--color-accent-soft);background:0 0;border-color:#ff7a008c}@media (min-width:768px){.price-grid{grid-template-columns:repeat(3,1fr)}}.onboard-nav{z-index:50;border-bottom:1px solid var(--color-rule);background:var(--color-paper);background:color-mix(in srgb, var(--color-paper) 86%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0}.onboard-nav-inner{justify-content:space-between;align-items:center;gap:16px;max-width:1024px;margin:0 auto;padding:14px 16px;display:flex}.onboard-home{font-family:var(--font-ui);color:var(--color-muted);border-radius:var(--radius-md);align-items:center;gap:6px;padding:4px 8px;font-size:.85rem;font-weight:600;text-decoration:none;transition:color .15s,background-color .15s;display:inline-flex}.onboard-home:hover{color:var(--color-ink);background:var(--color-ink-wash)}.onboard-shell{width:100%;max-width:760px;margin:0 auto;padding:0 24px}.onboard-section{flex-direction:column;justify-content:flex-start;min-height:calc(100vh - 62px);padding-top:clamp(60px,12vh,120px);padding-bottom:80px;display:flex}.back-link{font-family:var(--font-ui);color:var(--color-muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;margin-bottom:16px;padding:4px 0;font-size:.85rem;font-weight:600;text-decoration:none;transition:color .15s;display:inline-flex}.back-link:hover{color:var(--color-ink)}.onboard-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:24px;display:flex}.onboard-actions.between{justify-content:space-between}.onboard-actions.end{justify-content:flex-end}.onboard-actions.center{justify-content:center}.onboard-signin-link{font-family:var(--font-ui);color:var(--color-muted);margin:0;font-size:.88rem}.onboard-signin-link a{color:var(--color-ink);font-weight:600}.panel-danger{color:var(--color-danger);border-radius:var(--radius-md);font-family:var(--font-ui);background:#b91c1c0f;border:1px solid #b91c1c47;padding:12px 16px;font-size:.9rem}.onboard-features{background:var(--color-rule);border:1px solid var(--color-rule);border-radius:var(--radius-lg);grid-template-columns:1fr;gap:1px;margin-top:32px;display:grid;overflow:hidden}.onboard-feature{background:var(--color-card);grid-template-columns:28px 1fr;align-items:start;gap:14px;padding:18px 20px;display:grid}.onboard-feature-num{font-family:var(--font-ui);letter-spacing:.14em;color:var(--color-accent-text);padding-top:2px;font-size:.7rem}.onboard-feature h3{margin:0 0 4px;font-size:1rem;font-weight:700}.onboard-feature p{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.92rem;line-height:1.55}.grade-row{grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px;display:grid}.grade-btn{border:1.5px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);color:var(--color-ink);font-family:var(--font-display);cursor:pointer;justify-content:center;align-items:center;padding:16px 12px;font-size:1.05rem;font-weight:700;transition:background-color .16s,border-color .16s,color .16s,transform .16s;display:flex}.grade-btn:hover:not(:disabled){border-color:var(--color-primary);background:var(--color-primary-wash);color:var(--color-primary-text);transform:translateY(-1px)}.grade-btn:disabled{opacity:.55;cursor:not-allowed}.onboard-progress{gap:8px;margin-bottom:24px;display:grid}.onboard-progress-meta{font-family:var(--font-ui);color:var(--color-muted);text-transform:uppercase;letter-spacing:.1em;justify-content:space-between;align-items:baseline;font-size:.78rem;display:flex}.onboard-progress-meta b{color:var(--color-ink);font-variant-numeric:tabular-nums}.level-card{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);box-shadow:var(--shadow-lift);margin-top:24px;padding:32px;position:relative;overflow:hidden}.level-card:before{content:"";background:var(--color-accent);height:4px;position:absolute;top:0;left:0;right:0}.level-num{font-family:var(--font-display);letter-spacing:-.04em;color:var(--color-ink);font-variant-numeric:tabular-nums;margin-top:8px;font-size:clamp(3rem,8vw,4.5rem);font-weight:800;line-height:1;display:block}.level-name{font-family:var(--font-display);color:var(--color-accent-text);text-transform:uppercase;letter-spacing:.1em;margin-top:6px;font-size:1.05rem;font-weight:600;display:block}.review-item{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);overflow:hidden}.review-item-head{border-bottom:1px solid var(--color-rule);background:var(--color-cream);justify-content:space-between;align-items:center;padding:14px 18px;display:flex}.review-item-body{padding:18px}.onboard-hint{font-family:var(--font-ui);color:var(--color-muted);margin:0;font-size:.78rem}@media (min-width:640px){.onboard-features{grid-template-columns:1fr 1fr 1fr}}@media (max-width:480px){.grade-row{grid-template-columns:repeat(2,1fr)}}.auth-section{flex-direction:column;justify-content:flex-start;min-height:calc(100vh - 62px);padding-top:clamp(60px,12vh,120px);padding-bottom:48px;display:flex}.auth-shell{width:100%;max-width:440px;margin:0 auto;padding:0 20px}@media (max-width:640px){.auth-section{padding-bottom:32px}.auth-shell{padding:0 16px}}.acct-chip{font-family:var(--font-ui);color:var(--color-ink);border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);cursor:pointer;padding:5px 11px;font-size:.82rem;font-weight:600;transition:border-color .15s,background-color .15s}.acct-chip:hover{border-color:var(--color-ink);background:var(--color-ink-wash)}.signout-link{font-family:var(--font-ui);color:var(--color-danger);cursor:pointer;background:0 0;border:none;padding:0;font-size:.85rem;font-weight:600;transition:opacity .15s}.signout-link:hover{opacity:.75}.dash-main{padding-top:clamp(60px,12vh,120px);padding-bottom:64px}.dash-grid{gap:32px;margin-top:32px;display:grid}.dash-row-2{background:var(--color-rule);border:1px solid var(--color-rule);border-radius:var(--radius-lg);gap:1px;display:grid;overflow:hidden}.dash-row-2>*{background:var(--color-card);padding:24px}.dash-row-2>.tile-radar{grid-area:auto}.tile-radar{align-content:start;gap:14px;display:grid}.tile-radar .yx-label{margin:0}.tile-radar .radar-wrap{margin:0 auto}.next-cell{align-content:start;gap:12px;display:grid}.next-meta{font-family:var(--font-ui);color:var(--color-muted);text-transform:uppercase;letter-spacing:.1em;margin:0;font-size:.75rem}.next-topic{font-family:var(--font-serif);color:var(--color-ink);margin:0;font-size:1.15rem;line-height:1.4}.next-tutor{font-family:var(--font-ui);color:var(--color-muted);align-items:center;gap:6px;font-size:.85rem;font-weight:600;text-decoration:none;transition:color .15s;display:inline-flex}.next-tutor:hover{color:var(--color-accent-text)}.jump-grid{background:var(--color-rule);border:1px solid var(--color-rule);border-radius:var(--radius-lg);grid-template-columns:repeat(4,1fr);gap:1px;display:grid;overflow:hidden}.jump-tile{background:var(--color-card);color:var(--color-ink);gap:8px;padding:20px;text-decoration:none;transition:background-color .15s;display:grid}.jump-tile:hover{background:var(--color-cream)}.jump-tile-head{justify-content:space-between;align-items:flex-start;gap:8px;display:flex}.jump-tile h3{margin:0;font-size:1rem;font-weight:700}.jump-tile p{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.9rem;line-height:1.5}.jump-arrow{opacity:.35;flex-shrink:0;transition:opacity .15s,transform .15s,color .15s}.jump-tile:hover .jump-arrow{opacity:1;color:var(--color-accent-text);transform:translate(2px,-2px)}.notes-mod{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);overflow:hidden}.notes-mod-head{background:var(--color-cream);border-bottom:1px solid var(--color-rule);padding:14px 20px}.notes-mod-head .yx-label{margin:0}.notes-mod-body{padding:20px}.notes-mod-empty{margin:0;padding:28px 20px}.alert-accent{border:1px solid var(--color-rule);border-left:3px solid var(--color-accent);background:var(--color-accent-wash);border-radius:var(--radius-md);padding:20px 24px}.alert-accent .yx-label{color:var(--color-accent-text);margin:0}.alert-accent h2{margin:8px 0 0;font-size:1.3rem}.alert-accent ul{color:var(--color-muted);margin:16px 0 0;padding-left:20px}.alert-accent li{font-size:.9rem;line-height:1.55}.progress-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px;display:flex}.progress-head h2{margin:0;font-size:1.3rem}.progress-legend{font-family:var(--font-ui);color:var(--color-muted);text-transform:uppercase;letter-spacing:.1em;gap:16px;font-size:.75rem;display:flex}.legend-swatch{vertical-align:middle;width:10px;height:10px;margin-right:6px;display:inline-block}.sw-basic{background:var(--color-success)}.sw-adv{background:var(--color-accent)}.status-chip{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;border-radius:var(--radius-sm);align-items:center;padding:3px 9px;font-size:.7rem;font-weight:700;display:inline-flex}.status-chip-passed{color:var(--color-success);background:#15803d1f}.status-chip-active{background:var(--color-ink-wash);color:var(--color-muted)}.cat-card{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);overflow:hidden}.cat-card.alert{border-left:3px solid var(--color-accent)}.cat-card-head{border-bottom:1px solid var(--color-rule);background:var(--color-cream);justify-content:space-between;align-items:flex-start;gap:12px;padding:16px 20px;display:flex}.cat-card-head .yx-label{color:var(--color-muted);margin:0}.cat-card-head h3{margin:4px 0 0;font-size:1.05rem}.cat-progress{border-bottom:1px solid var(--color-rule);padding:16px 20px}.cat-bar{background:var(--color-rule-soft);height:6px;display:flex;overflow:hidden}.cat-bar-basic{background:var(--color-success)}.cat-bar-adv{background:var(--color-accent)}.cat-actions{flex-wrap:wrap;align-items:center;gap:8px;padding:14px 20px;display:flex}.cat-hint{font-family:var(--font-ui);color:var(--color-muted);margin-left:auto;font-size:.75rem}.gate-panel{border-radius:var(--radius-lg);background:var(--color-ink);color:var(--color-paper);text-align:center;padding:32px;position:relative;overflow:hidden}.gate-panel:before{content:"";pointer-events:none;background-image:linear-gradient(#faf9f409 1px,#0000 1px),linear-gradient(90deg,#faf9f409 1px,#0000 1px);background-size:32px 32px;position:absolute;inset:0}.gate-panel>*{position:relative}.gate-panel .yx-label{color:var(--color-accent-soft);margin:0}.gate-panel h2{color:var(--color-paper);margin:8px 0 0;font-size:clamp(1.5rem,3vw,2rem)}.gate-panel .yx-btn{margin-top:20px}@media (min-width:768px){.toolkit-bento>.tile-radar{grid-column:1/-1}}@media (min-width:1000px){.toolkit-bento>.tile-radar{grid-area:span 2}}@media (min-width:769px){.dash-row-2{grid-template-columns:1fr 1fr}}@media (max-width:768px){.jump-grid{grid-template-columns:1fr 1fr}}@media (max-width:480px){.jump-grid{grid-template-columns:1fr}.cat-card-head{flex-direction:column;align-items:flex-start;gap:8px}.cat-hint{width:100%;margin-top:4px;margin-left:0}}.nav-inner{padding:14px 16px}.acct-chip{padding:6px 12px;font-size:.9rem}.signout-link{font-size:.9rem}.dash-radar{align-content:start;gap:14px;display:grid}.dash-radar .yx-label{margin:0}.dash-radar .radar-wrap{margin:0 auto}.next-level{font-family:var(--font-display);letter-spacing:-.03em;color:var(--color-ink);font-variant-numeric:tabular-nums;margin:0;font-size:2.2rem;font-weight:800;line-height:1}.next-topic{font-size:1.3rem}.next-tutor{font-size:.9rem}.jump-tile{padding:22px}.jump-tile h3{font-size:1.1rem}.jump-tile p{font-size:.98rem}.cat-card-head h3{font-size:1.15rem}.cat-hint{font-size:.8rem}.status-chip{font-size:.75rem}.progress-legend{font-size:.8rem}.progress-head h2{font-size:1.45rem}.alert-accent h2{font-size:1.4rem}.alert-accent li{font-size:.95rem}.notes-mod-head .yx-label{font-size:.72rem}.dash-mod{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:var(--color-ink);overflow:hidden}.dash-radar-full{gap:14px;padding:24px;display:grid}.dash-radar-full .yx-label{margin:0}.dash-radar-full .radar-wrap{margin:0 auto}.next-bar{align-items:center;gap:16px;padding:20px 24px;display:grid}.next-bar-left{gap:6px;display:grid}.next-bar-row{flex-wrap:wrap;align-items:baseline;gap:14px;display:flex}.next-bar-row .next-level{font-size:2rem}.next-bar-actions{flex-wrap:wrap;align-items:center;gap:16px;display:flex}@media (min-width:768px){.next-bar{grid-template-columns:1fr auto}.next-bar-actions{justify-content:flex-end}}.problem-text{-webkit-user-select:none;user-select:none;pointer-events:none}.problem-text *{-webkit-user-select:none!important;user-select:none!important}.session-bar{background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-lg);justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px;padding:16px 20px;display:flex}.session-stat{gap:2px;display:grid}.session-stat-label{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);font-size:.7rem}.session-stat-value{font-family:var(--font-display);letter-spacing:-.02em;color:var(--color-ink);font-size:1.4rem;font-weight:800;line-height:1}.session-stat-value.streak{color:var(--color-accent)}.problem-mod{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);margin-bottom:20px;overflow:hidden}.practice-stage{border-radius:var(--radius-sm);font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;align-items:center;gap:6px;padding:4px 10px;font-size:.72rem;font-weight:700;display:inline-flex}.practice-stage-basic{background:var(--color-ink-wash);color:var(--color-ink)}.practice-stage-advanced{background:var(--color-primary-wash);color:var(--color-primary-text)}.notes-list{gap:16px;display:grid}.notes-item{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);overflow:hidden}.notes-item-head{background:var(--color-cream);border-bottom:1px solid var(--color-rule);padding:14px 20px}.notes-item-body{padding:20px}.break-prompt{text-align:center;max-width:480px;margin:0 auto}.break-prompt h1{margin:0 0 8px;font-size:clamp(1.8rem,4vw,2.4rem)}.break-prompt p{margin:0 0 24px}.completion-stats{background:var(--color-rule);border:1px solid var(--color-rule);border-radius:var(--radius-lg);grid-template-columns:1fr 1fr;gap:1px;margin:24px 0;display:grid;overflow:hidden}.completion-stat{background:var(--color-card);text-align:center;padding:20px}.completion-stat-label{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);margin-bottom:6px;font-size:.7rem}.completion-stat-value{font-family:var(--font-display);letter-spacing:-.03em;color:var(--color-ink);font-size:2rem;font-weight:800;line-height:1}.practice-main{padding:40px 0 64px}.practice-topline{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.practice-meta{font-family:var(--font-ui);color:var(--color-muted);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:.8rem}.practice-meta b{color:var(--color-ink);font-weight:700}.practice-meta .streak-hot{color:var(--color-accent-text)}.problem-text .markdown{font-size:1.25rem;line-height:1.75}.problem-mod-body{padding:28px}.break-prompt .onboard-actions{justify-content:center}.chat-shell{height:100vh;display:flex;overflow:hidden}.chat-sidebar{border-right:1px solid var(--color-rule);background:var(--color-paper);flex-direction:column;flex-shrink:0;width:280px;display:flex}.chat-sidebar-head{border-bottom:1px solid var(--color-rule);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.chat-new-wrap{border-bottom:1px solid var(--color-rule);padding:12px 16px}.chat-new-wrap .yx-btn{justify-content:center;width:100%}.chat-list{flex:1;padding:8px;overflow-y:auto}.chat-item-row{margin-bottom:2px;position:relative}.chat-item-btn{text-align:left;border-radius:var(--radius-md);cursor:pointer;width:100%;font-family:var(--font-ui);color:var(--color-ink);background:0 0;border:1px solid #0000;justify-content:space-between;align-items:center;padding:8px 10px 8px 12px;font-size:.875rem;transition:background-color .12s,border-color .12s;display:flex}.chat-item-btn:hover{background:var(--color-ink-wash);border-color:var(--color-rule-soft)}.chat-item-btn.active{background:var(--color-ink-wash);border-color:var(--color-rule)}.chat-item-title{text-overflow:ellipsis;white-space:nowrap;flex:1;padding-right:8px;overflow:hidden}.chat-item-dots{border-radius:var(--radius-sm);width:24px;height:24px;color:var(--color-muted);opacity:.5;flex-shrink:0;justify-content:center;align-items:center;transition:opacity .15s,background-color .12s;display:flex}.chat-item-btn:hover .chat-item-dots,.chat-item-btn.active .chat-item-dots{opacity:1}.chat-item-dots:hover{background:var(--color-rule-soft)}.chat-menu{background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-md);z-index:100;min-width:130px;box-shadow:var(--shadow-lift);margin-top:4px;padding:4px;position:absolute;top:100%;right:0}.chat-menu button{text-align:left;border-radius:var(--radius-sm);cursor:pointer;width:100%;font-family:var(--font-ui);color:var(--color-ink);background:0 0;border:0;padding:8px 12px;font-size:.85rem;transition:background-color .12s;display:block}.chat-menu button:hover{background:var(--color-ink-wash)}.chat-menu .danger-item{color:var(--color-danger)}.chat-menu .danger-item:hover{background:#b91c1c14}.chat-sidebar-foot{border-top:1px solid var(--color-rule);padding:12px 16px}.chat-sidebar-foot .yx-btn{justify-content:center;width:100%}.chat-empty-side{text-align:center;font-family:var(--font-ui);color:var(--color-muted);padding:20px 16px;font-size:.8rem}.chat-main{background:var(--color-paper);flex-direction:column;flex:1;min-width:0;display:flex}.chat-head{border-bottom:1px solid var(--color-rule);background:var(--color-paper);background:color-mix(in srgb, var(--color-paper) 86%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:12px 16px}.chat-head-inner{align-items:center;gap:12px;max-width:760px;margin:0 auto;display:flex}.chat-title{color:var(--color-ink);text-overflow:ellipsis;white-space:nowrap;flex:1;margin:0;font-size:1rem;font-weight:600;overflow:hidden}.chat-scroll{flex:1;overflow-y:auto}.chat-body{max-width:760px;margin:0 auto;padding:24px 16px}.chat-hero{text-align:center;padding:32px 0 24px}.chat-hero .section-head{max-width:560px;margin:0 auto 32px}.prompt-grid{background:var(--color-rule);border:1px solid var(--color-rule);border-radius:var(--radius-lg);text-align:left;grid-template-columns:repeat(3,1fr);gap:1px;display:grid;overflow:hidden}.prompt-card{background:var(--color-card);cursor:pointer;font:inherit;color:inherit;border:0;gap:8px;padding:18px 20px;transition:background-color .15s;display:grid}.prompt-card:hover{background:var(--color-cream)}.prompt-card-head{color:var(--color-accent-text);align-items:center;gap:8px;display:flex}.prompt-card h3{color:var(--color-ink);margin:0;font-size:.95rem;font-weight:700}.prompt-card p{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.88rem;line-height:1.5}.msg{margin-bottom:28px}.msg-user{justify-content:flex-end;display:flex}.msg-user-bubble{background:var(--color-ink-wash);border:1px solid var(--color-rule);border-radius:var(--radius-md);max-width:75%;padding:10px 14px}.msg-user-bubble p{font-family:var(--font-ui);white-space:pre-wrap;color:var(--color-ink);margin:0;font-size:.95rem;line-height:1.6}.msg-assistant{gap:6px;display:grid}.msg-assistant .yx-label{color:var(--color-accent-text);margin:0 0 2px 2px}.msg-assistant-body{border-left:3px solid var(--color-accent);border-radius:0 var(--radius-md) var(--radius-md) 0;background:#ff7a000a;padding:10px 18px}.msg-assistant-body .markdown{font-size:1rem;line-height:1.7}.typing{border-left:3px solid var(--color-accent);border-radius:0 var(--radius-md) var(--radius-md) 0;background:#ff7a000a;align-items:center;gap:4px;padding:10px 18px;display:inline-flex}.typing span{background:var(--color-accent);width:6px;height:6px;animation:1.3s ease-in-out infinite yx-dotpulse}.typing span:nth-child(2){animation-delay:.18s}.typing span:nth-child(3){animation-delay:.36s}@keyframes yx-dotpulse{0%,80%,to{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}.chat-input-wrap{border-top:1px solid var(--color-rule);background:var(--color-paper);padding:14px 16px 12px}.chat-input{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);align-items:flex-end;gap:10px;max-width:760px;margin:0 auto;padding:8px 8px 8px 14px;transition:border-color .15s,box-shadow .15s;display:flex}.chat-input:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-wash)}.chat-input textarea{resize:none;min-height:28px;max-height:33vh;font-family:var(--font-ui);color:var(--color-ink);background:0 0;border:0;outline:none;flex:1;padding:6px 0;font-size:1rem;line-height:1.6;overflow-y:auto}.chat-input textarea::placeholder{color:var(--color-muted)}.chat-input textarea:disabled{cursor:not-allowed}.chat-input-hint{text-align:center;max-width:760px;font-family:var(--font-ui);color:var(--color-muted);letter-spacing:.02em;margin:8px auto 0;font-size:.75rem}.chat-empty-selected{text-align:center;justify-content:center;align-items:center;min-height:300px;display:flex}.btn-danger-outline{border-color:var(--color-danger);color:var(--color-danger)}.btn-danger-outline:hover{background:var(--color-danger);border-color:var(--color-danger);color:#fff}.chat-mobile-overlay{z-index:50;display:flex;position:fixed;inset:0}.chat-mobile-overlay-bg{background:#06080f66;position:fixed;inset:0}.chat-mobile-drawer{background:var(--color-paper);z-index:51;width:280px;max-width:85vw;box-shadow:var(--shadow-lift);flex-direction:column;display:flex;position:relative}@media (max-width:768px){.chat-sidebar{display:none}.prompt-grid{grid-template-columns:1fr 1fr}}@media (max-width:520px){.prompt-grid{grid-template-columns:1fr}.msg-user-bubble{max-width:88%}.chat-body{padding:16px 14px}}.chat-send{border-radius:var(--radius-md);background:var(--color-primary);color:#fff;cursor:pointer;border:0;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;transition:background-color .15s,opacity .15s,transform .15s;display:inline-flex}.chat-send:hover:not(:disabled){background:var(--color-primary-deep)}.chat-send:active:not(:disabled){transform:translateY(1px)}.chat-send:disabled{opacity:.4;cursor:not-allowed}.forum-page{background:var(--color-paper);min-height:calc(100vh - 62px);padding:48px 0 64px}.forum-container{max-width:900px;margin:0 auto;padding:0 24px}.forum-hero{text-align:left;margin-bottom:48px}.forum-hero h1{letter-spacing:-.03em;color:var(--color-ink);margin:0 0 12px;font-size:clamp(2rem,5vw,2.8rem);font-weight:800}.forum-hero p{font-family:var(--font-serif);color:var(--color-muted);max-width:600px;margin:0 0 24px;font-size:1.15rem;line-height:1.6}.forum-hero-actions{flex-wrap:wrap;gap:12px;display:flex}.forum-ask-section{margin-bottom:48px}.forum-ask-toggle{background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-md);cursor:pointer;font-family:var(--font-ui);color:var(--color-ink);align-items:center;gap:8px;padding:10px 16px;font-size:.9rem;font-weight:600;transition:border-color .15s,background-color .15s;display:inline-flex}.forum-ask-toggle:hover{border-color:var(--color-primary);background:var(--color-card)}.forum-ask-form{border:1px solid var(--color-rule);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);background:#1d651708;margin-top:16px;padding:24px}.forum-ask-form .field{margin-bottom:16px}.forum-ask-form .field label{font-family:var(--font-ui);color:var(--color-ink);margin-bottom:6px;font-size:.85rem;font-weight:600;display:block}.forum-ask-form input,.forum-ask-form textarea{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);width:100%;font-family:var(--font-ui);color:var(--color-ink);padding:10px 12px;font-size:.95rem;transition:border-color .15s,box-shadow .15s}.forum-ask-form input:focus,.forum-ask-form textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-wash);outline:none}.forum-ask-form textarea{resize:vertical;min-height:100px}.forum-controls{border-bottom:1px solid var(--color-rule);justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding-bottom:16px;display:flex}.forum-controls h2{color:var(--color-ink);margin:0;font-size:1.2rem;font-weight:700}.forum-sort{background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-md);gap:4px;padding:4px;display:flex}.forum-sort-btn{border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-ui);color:var(--color-muted);background:0 0;border:0;padding:6px 12px;font-size:.8rem;font-weight:600;transition:background-color .12s,color .12s}.forum-sort-btn:hover{color:var(--color-ink)}.forum-sort-btn.active{background:var(--color-primary);color:#fff}.forum-post-list{gap:12px;display:grid}.forum-post-card{background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-lg);cursor:pointer;grid-template-columns:80px 1fr;gap:16px;padding:20px;transition:border-color .15s,box-shadow .15s;display:grid}.forum-post-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-soft)}.forum-post-card.pinned{border-left:3px solid var(--color-accent)}.forum-post-stats{flex-direction:column;align-items:center;gap:12px;display:flex}.forum-stat-box{background:var(--color-paper);border:1px solid var(--color-rule);border-radius:var(--radius-md);flex-direction:column;align-items:center;min-width:60px;padding:8px 12px;display:flex}.forum-stat-box.has-replies{border-color:var(--color-primary);background:#1d65170f}.forum-stat-num{font-family:var(--font-display);color:var(--color-ink);font-size:1.1rem;font-weight:700;line-height:1}.forum-stat-box.has-replies .forum-stat-num{color:var(--color-primary)}.forum-stat-label{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);margin-top:2px;font-size:.65rem}.forum-stat-box.has-replies .forum-stat-label{color:var(--color-primary-text)}.forum-post-content{gap:8px;display:grid}.forum-post-title{font-family:var(--font-display);color:var(--color-ink);margin:0;font-size:1.15rem;font-weight:700;line-height:1.4}.forum-post-preview{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.95rem;line-height:1.6}.forum-post-meta{font-family:var(--font-ui);color:var(--color-muted);flex-wrap:wrap;align-items:center;gap:8px;font-size:.8rem;display:flex}.status-chip-pinned{background:var(--color-accent-wash);color:var(--color-accent-text);border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.08em;padding:3px 8px;font-size:.65rem;font-weight:700}.status-chip-admin{background:var(--color-primary-wash);color:var(--color-primary-text);border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.08em;padding:3px 8px;font-size:.65rem;font-weight:700}.forum-empty{text-align:center;background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-lg);padding:64px 24px}.forum-empty h3{color:var(--color-ink);margin:0 0 8px;font-size:1.3rem;font-weight:700}.forum-empty p{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:1rem}.forum-detail-back{font-family:var(--font-ui);color:var(--color-muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;margin-bottom:16px;padding:6px 0;font-size:.85rem;font-weight:600;transition:color .15s;display:inline-flex}.forum-detail-back:hover{color:var(--color-ink)}.forum-detail-article{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);margin-bottom:32px;padding:32px}.forum-detail-title{color:var(--color-ink);margin:0 0 12px;font-size:1.6rem;font-weight:700;line-height:1.3}.forum-detail-meta{font-family:var(--font-ui);color:var(--color-muted);border-bottom:1px solid var(--color-rule);margin-bottom:20px;padding-bottom:16px;font-size:.85rem}.forum-linked-problem{border:1px solid var(--color-rule);border-left:3px solid var(--color-primary);border-radius:var(--radius-md);background:var(--color-card);margin-bottom:20px;padding:16px}.forum-linked-problem .yx-label{margin:0 0 8px}.forum-detail-body{font-family:var(--font-serif);color:var(--color-ink);margin-bottom:20px;font-size:1.05rem;line-height:1.7}.forum-detail-actions{border-top:1px solid var(--color-rule);flex-wrap:wrap;gap:8px;padding-top:16px;display:flex}.forum-replies-title{color:var(--color-ink);margin:0 0 16px;font-size:1.2rem;font-weight:700}.forum-reply{margin-bottom:12px}.forum-reply.nested{border-left:2px solid var(--color-rule);margin-left:24px;padding-left:16px}.forum-reply-card{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);padding:16px 20px}.forum-reply-meta{font-family:var(--font-ui);color:var(--color-muted);margin-bottom:8px;font-size:.8rem}.forum-reply-body{font-family:var(--font-serif);color:var(--color-ink);margin-bottom:10px;font-size:.95rem;line-height:1.6}.forum-reply-actions{flex-wrap:wrap;gap:8px;display:flex}.forum-reply-form{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);margin-top:24px;padding:20px}.forum-reply-form-replying{font-family:var(--font-ui);color:var(--color-muted);margin-bottom:12px;font-size:.85rem}.forum-reply-form-replying button{color:var(--color-primary);cursor:pointer;background:0 0;border:none;margin-left:8px;padding:0;font-weight:600}.forum-reply-form textarea{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-paper);width:100%;min-height:80px;font-family:var(--font-ui);color:var(--color-ink);resize:vertical;padding:10px 12px;font-size:.95rem;transition:border-color .15s,box-shadow .15s}.forum-reply-form textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-wash);outline:none}.forum-reply-form-actions{justify-content:flex-end;margin-top:12px;display:flex}@media (max-width:640px){.forum-post-card{grid-template-columns:1fr}.forum-post-stats{flex-direction:row;justify-content:flex-start}.forum-container{padding:0 16px}.forum-detail-article{padding:20px}.forum-reply.nested{margin-left:16px;padding-left:12px}}.forum-ask-wrapper{opacity:0;max-height:0;margin-bottom:0;transition:max-height .4s cubic-bezier(.4,0,.2,1),opacity .3s cubic-bezier(.4,0,.2,1),margin .4s cubic-bezier(.4,0,.2,1);overflow:hidden}.forum-ask-wrapper.open{opacity:1;max-height:800px;margin-bottom:48px}.forum-ask-wrapper .forum-ask-form{transition:transform .3s cubic-bezier(.4,0,.2,1);transform:translateY(-10px)}.forum-ask-wrapper.open .forum-ask-form{transform:translateY(0)}.content-page{background:var(--color-paper);min-height:calc(100vh - 62px);padding:48px 0 64px}.content-container{max-width:1100px;margin:0 auto;padding:0 24px}.content-hero{margin-bottom:40px}.content-hero h1{letter-spacing:-.03em;color:var(--color-ink);margin:0 0 12px;font-size:clamp(2.2rem,5vw,3rem);font-weight:800;line-height:1.1}.content-hero p{font-family:var(--font-serif);color:var(--color-muted);max-width:640px;margin:0;font-size:1.1rem;line-height:1.6}.level-tabs{z-index:40;background:var(--color-paper);background:color-mix(in srgb, var(--color-paper) 92%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--color-rule);position:sticky;top:62px}.level-tabs-inner{-webkit-overflow-scrolling:touch;gap:24px;max-width:1024px;margin:0 auto;padding:0 16px;display:flex;overflow-x:auto}.level-tab{cursor:pointer;font-family:var(--font-ui);color:var(--color-muted);white-space:nowrap;background:0 0;border:0;border-bottom:2px solid #0000;flex-shrink:0;padding:12px 2px;font-size:.9rem;font-weight:600;transition:color .15s,border-color .15s}.level-tab:hover{color:var(--color-ink)}.level-tab.active{color:var(--color-ink);border-bottom-color:var(--color-accent);font-weight:700}.level-section{margin-bottom:64px;scroll-margin-top:140px}.level-header{margin-bottom:24px}.level-eyebrow{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);margin-bottom:8px;font-size:.75rem}.level-title{align-items:baseline;gap:12px;margin:0 0 8px;display:flex}.level-code{font-family:var(--font-display);color:var(--color-accent);font-size:2.5rem;font-weight:800;line-height:1}.level-name{font-family:var(--font-display);color:var(--color-ink);font-size:2rem;font-weight:700;line-height:1.2}.level-meta{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.level-count{font-family:var(--font-ui);color:var(--color-muted);font-size:.85rem}.dev-banner{background:var(--color-ink-wash);border:1px solid var(--color-rule);border-radius:var(--radius-md);font-family:var(--font-serif);color:var(--color-muted);margin-bottom:24px;padding:16px 20px;font-size:.95rem}.category-section{margin-bottom:32px}.category-title{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);margin:0 0 12px;font-size:.75rem}.module-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px;display:grid}.module-card{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);padding:20px;transition:border-color .15s,box-shadow .15s,transform .15s}.module-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-soft);transform:translateY(-2px)}.module-head{align-items:flex-start;gap:12px;margin-bottom:8px;display:flex}.module-seq{font-family:var(--font-display);color:var(--color-accent-text);min-width:32px;font-size:1.1rem;font-weight:700}.module-topic{font-family:var(--font-display);color:var(--color-ink);flex:1;margin:0;font-size:1.05rem;font-weight:700;line-height:1.4}.module-descriptor{font-family:var(--font-serif);color:var(--color-muted);margin:0 0 12px;font-size:.9rem;line-height:1.5}.module-status{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;border-radius:var(--radius-sm);padding:3px 8px;font-size:.65rem;font-weight:700;display:inline-block}.module-status.active{color:var(--color-success);background:#15803d1f}.module-status.preview{background:var(--color-accent-wash);color:var(--color-accent-text)}.module-status.coming-soon{background:var(--color-ink-wash);color:var(--color-muted)}.materials-filters{border-bottom:1px solid var(--color-rule);flex-direction:column;gap:12px;margin-bottom:24px;padding-bottom:20px;display:flex}.materials-search-row{grid-template-columns:minmax(0,1fr) 200px;align-items:center;gap:12px;display:grid}.materials-search{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);align-items:center;gap:10px;width:100%;height:44px;padding:0 14px;transition:border-color .15s,box-shadow .15s;display:flex}.materials-search:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-wash)}.materials-search .search-icon{width:18px;height:18px;color:var(--color-muted);flex:0 0 18px;display:inline-flex}.materials-search .search-icon svg{width:18px;height:18px}.materials-search input{width:100%;min-width:0;height:42px;font-family:var(--font-ui);color:var(--color-ink);border-radius:0;flex:auto;margin:0;font-size:1rem;line-height:42px;box-shadow:none!important;background:0 0!important;border:0!important;outline:none!important;padding:0!important}.materials-search input::placeholder{color:var(--color-muted)}.materials-sort{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);width:100%;height:44px;color:var(--color-ink);font-family:var(--font-ui);cursor:pointer;padding:0 12px;font-size:.95rem}@media (max-width:640px){.materials-search-row{grid-template-columns:1fr}}.materials-chips{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.materials-chip{background:var(--color-ink-wash);border-radius:var(--radius-md);cursor:pointer;font-family:var(--font-ui);color:var(--color-ink);border:1px solid #0000;align-items:center;gap:6px;padding:7px 12px;font-size:.8rem;font-weight:600;transition:background-color .15s,border-color .15s,color .15s;display:inline-flex}.materials-chip:hover{border-color:var(--color-rule)}.materials-chip.active{background:var(--color-ink);border-color:var(--color-ink);color:var(--color-paper)}.materials-chip-label{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);margin-right:4px;font-size:.75rem}.active-filters{background:var(--color-ink-wash);border-radius:var(--radius-md);flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px;padding:12px 16px;display:flex}.active-filters-count{font-family:var(--font-ui);color:var(--color-ink);font-size:.85rem;font-weight:600}.active-filter-pill{background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-sm);font-family:var(--font-ui);color:var(--color-ink);align-items:center;gap:6px;padding:4px 10px;font-size:.75rem;display:inline-flex}.active-filter-pill button{cursor:pointer;color:var(--color-muted);background:0 0;border:none;padding:0;font-size:1rem;line-height:1}.active-filter-pill button:hover{color:var(--color-danger)}.clear-filters{cursor:pointer;font-family:var(--font-ui);color:var(--color-primary);background:0 0;border:none;margin-left:auto;padding:0;font-size:.8rem;font-weight:600}.clear-filters:hover{text-decoration:underline}.materials-results-meta{font-family:var(--font-ui);color:var(--color-muted);margin-bottom:16px;font-size:.85rem}.materials-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;display:grid}.material-card{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);color:inherit;flex-direction:column;gap:8px;padding:20px;text-decoration:none;transition:border-color .15s,box-shadow .15s,transform .15s;display:flex}.material-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-soft);transform:translateY(-2px)}.material-topic{font-family:var(--font-display);color:var(--color-ink);margin:0;font-size:1.1rem;font-weight:700;line-height:1.4}.material-desc{font-family:var(--font-serif);color:var(--color-muted);flex:1;margin:0;font-size:.9rem;line-height:1.5}.material-meta{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.material-tag{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;border-radius:var(--radius-sm);padding:3px 8px;font-size:.7rem;font-weight:600;display:inline-block}.material-tag.level{color:var(--color-primary-text);background:#1d65171a}.material-tag.category{background:var(--color-ink-wash);color:var(--color-muted)}.material-tag.pdf{background:var(--color-accent-wash);color:var(--color-accent-text)}.public-hint{text-align:center;background:var(--color-ink-wash);border-radius:var(--radius-lg);margin-top:40px;padding:24px}.public-hint p{font-family:var(--font-ui);color:var(--color-muted);margin:0;font-size:.9rem}.public-hint a{color:var(--color-primary);font-weight:600;text-decoration:none}.public-hint a:hover{text-decoration:underline}.detail-breadcrumb{font-family:var(--font-ui);color:var(--color-muted);margin-bottom:16px;font-size:.85rem}.detail-breadcrumb a{color:var(--color-primary);font-weight:600;text-decoration:none}.detail-breadcrumb a:hover{text-decoration:underline}.detail-header{margin-bottom:32px}.detail-title{font-family:var(--font-display);letter-spacing:-.02em;color:var(--color-ink);margin:0 0 8px;font-size:clamp(1.8rem,4vw,2.4rem);font-weight:800;line-height:1.2}.detail-description{font-family:var(--font-serif);color:var(--color-muted);margin:0 0 16px;font-size:1.05rem;font-style:italic;line-height:1.6}.detail-tags{flex-wrap:wrap;gap:8px;display:flex}.detail-tag{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.08em;border-radius:var(--radius-sm);padding:4px 10px;font-size:.75rem;font-weight:600;display:inline-block}.detail-tag.level{background:var(--color-primary);color:#fff}.detail-tag.category{border:1px solid var(--color-ink);color:var(--color-ink);background:0 0}.detail-tag.date{color:var(--color-muted);background:0 0;padding:4px 0}.pdf-viewer{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);overflow:hidden}.pdf-viewer-header{background:var(--color-ink);color:#fff;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.pdf-viewer-label{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;font-size:.75rem;font-weight:600}.pdf-viewer-title{font-family:var(--font-ui);color:#ffffffb3;text-overflow:ellipsis;white-space:nowrap;max-width:50%;font-size:.85rem;overflow:hidden}.pdf-viewer iframe{background:#fff;border:none;width:100%;height:80vh;min-height:600px;display:block}.pdf-viewer-footer{background:var(--color-paper);border-top:1px solid var(--color-rule);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.pdf-viewer-hint{font-family:var(--font-ui);color:var(--color-muted);font-size:.8rem}.sign-in-gate{text-align:center;background:var(--color-card);border:1px solid var(--color-rule);border-radius:var(--radius-lg);max-width:500px;margin:80px auto;padding:40px 32px}.sign-in-gate h1{font-family:var(--font-display);color:var(--color-ink);margin:0 0 12px;font-size:1.8rem;font-weight:800}.sign-in-gate p{font-family:var(--font-serif);color:var(--color-muted);margin:0 0 24px;font-size:1rem;line-height:1.6}.sign-in-gate-actions{justify-content:center;gap:12px;display:flex}@media (max-width:640px){.module-grid,.materials-grid{grid-template-columns:1fr}.level-tabs-inner,.content-container{padding:0 16px}.sign-in-gate{margin:40px 16px;padding:32px 24px}}.legal-doc{max-width:720px}.legal-doc h1{letter-spacing:-.03em;margin:0 0 8px;font-size:clamp(2rem,4vw,2.6rem)}.legal-doc .legal-updated{font-family:var(--font-ui);color:var(--color-muted);text-transform:uppercase;letter-spacing:.1em;margin:0 0 32px;font-size:.8rem}.legal-doc h2{margin:40px 0 12px;font-size:1.15rem;font-weight:700}.legal-doc p,.legal-doc li{font-family:var(--font-serif);color:var(--color-ink);font-size:1rem;line-height:1.75}.legal-doc p{margin:0 0 14px}.legal-doc ul{margin:0 0 14px;padding-left:22px}.legal-doc li{margin-bottom:8px}.legal-doc strong{font-family:var(--font-ui);font-weight:700}.legal-doc a{color:var(--color-primary-text)}html[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--color-paper:#0e1017;--color-card:#171a23;--color-cream:#1c1f29;--color-ink:#faf9f4;--color-muted:#9095a1;--color-rule:#262932;--color-rule-soft:#1f2229;--color-ink-wash:#faf9f414;--color-primary:#2d8a22;--color-primary-text:#5bb850;--color-primary-wash:#2d8a2226;--color-primary-deep:#1d6517;--color-accent-text:#ff9a3d;--color-accent-wash:#ff7a0024;--color-accent-soft:#ffb570;--color-success:#4ade80;--color-danger:#f87171;--shadow-soft:0 2px 8px #0006;--shadow-lift:0 8px 24px #00000080;background:var(--color-paper)}html{transition:background-color .2s,color .2s}.theme-toggle{border:1px solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-card);width:34px;height:34px;color:var(--color-ink);cursor:pointer;justify-content:center;align-items:center;padding:0;transition:border-color .15s,background-color .15s,color .15s,opacity .2s;display:inline-flex}.theme-toggle:hover{border-color:var(--color-ink);background:var(--color-ink-wash)}iframe{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}html[data-theme=dark] .hero,html[data-theme=dark] .section,html[data-theme=dark] .band-inner{background:var(--color-paper);color:var(--color-ink)}html[data-theme=dark] .section.surface{background:var(--color-cream)}html[data-theme=dark] .hero-console,html[data-theme=dark] .mod,html[data-theme=dark] .tile,html[data-theme=dark] .scorecard,html[data-theme=dark] .ledger-row,html[data-theme=dark] .faq,html[data-theme=dark] .console-result,html[data-theme=dark] .check-list li{background:var(--color-card);color:var(--color-ink);border-color:var(--color-rule)}html[data-theme=dark] .hero-console h2,html[data-theme=dark] .hero-console h3,html[data-theme=dark] .mod h2,html[data-theme=dark] .mod h3,html[data-theme=dark] .tile h3,html[data-theme=dark] .scorecard h3,html[data-theme=dark] .ledger-row h3,html[data-theme=dark] .faq summary,html[data-theme=dark] .console-result .verdict{color:var(--color-ink)}html[data-theme=dark] .faq summary .faq-num,html[data-theme=dark] .ledger-num,html[data-theme=dark] .tile-num{color:var(--color-accent-text)}html[data-theme=dark] .hero-console .mod,html[data-theme=dark] .console .mod{background:var(--color-card);border-color:var(--color-rule)}html[data-theme=dark] .site-footer{background:var(--color-paper);border-top-color:var(--color-rule)}html[data-theme=dark] .footer-brand,html[data-theme=dark] .footer-tag{color:var(--color-ink)}html[data-theme=dark] .section-ink,html[data-theme=dark] .section-ink .mod,html[data-theme=dark] .band{color:#faf9f4;background:#06080f}html[data-theme=dark] .section-ink .mod,html[data-theme=dark] .band .mod{background:#faf9f40a;border-color:#faf9f414}html[data-theme=dark] ::selection{color:#faf9f4;background:#1d6517}html[data-theme=dark] mark{color:#faf9f4;background:#1d65178c}html[data-theme=dark] .ledger-num{-webkit-text-stroke-color:#06080f;text-shadow:none;border-color:#06080f}html[data-theme=dark] .check-list li,html[data-theme=dark] .ledger-row,html[data-theme=dark] .faq{background:0 0}html[data-theme=dark] .scorecard-bar{background:var(--color-card);border-color:var(--color-rule);color:var(--color-ink)}html[data-theme=dark] .score-badge{color:#f87171;background:#f8717129}.detail-tag.subject{background:var(--color-accent);color:#06080f}.ledger-num{border-color:#06080f}html[data-theme=dark] #pricing .section-head h2,html[data-theme=dark] #pricing .tier h3,html[data-theme=dark] #pricing .tier-price,html[data-theme=dark] #pricing .tier-list li,html[data-theme=dark] #pricing .tier-free-bar h3,html[data-theme=dark] #pricing .tier-free-bar p{color:#faf9f4}html[data-theme=dark] #pricing .section-head .subtitle,html[data-theme=dark] #pricing .tier .muted,html[data-theme=dark] #pricing .price-note,html[data-theme=dark] #pricing .price-was{color:#faf9f499}html[data-theme=dark] #pricing .tier,html[data-theme=dark] #pricing .tier-free-bar{background:#faf9f408;border-color:#faf9f424}html[data-theme=dark] #pricing .tier-hot{background:#ff7a0014;border-color:#ff7a0066}html[data-theme=dark] #pricing .yx-btn{color:#faf9f4;border-color:#faf9f473}html[data-theme=dark] #pricing .yx-btn:hover{background:#faf9f414;border-color:#faf9f4}html[data-theme=dark] #pricing .yx-btn-primary,html[data-theme=dark] #pricing .yx-btn-primary:hover{color:#fff;background:#1d6517;border-color:#1d6517}html[data-theme=dark] #pricing .live-chip{color:#ffb570;background:#ff7a001f;border-color:#ff7a0066}html[data-theme=dark] .band{background:#06080f}html[data-theme=dark] .band-inner{color:#faf9f4;background:0 0}html[data-theme=dark] .band h2{color:#faf9f4}html[data-theme=dark] .band .subtitle{color:#faf9f4b8}html[data-theme=dark] .band-micro{color:#faf9f480}html[data-theme=dark] .yx-btn-paper{color:#06080f;background:#faf9f4;border-color:#faf9f4}html[data-theme=dark] .yx-btn-paper:hover{background:#fff;border-color:#fff}html[data-theme=dark] .gate-panel{color:#faf9f4;background:#06080f}html[data-theme=dark] .gate-panel h2{color:#faf9f4}.price-free-bar{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-ink-wash);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;padding:20px 24px;display:flex}.price-grid-cards{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.price-card{border:1px solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-card);flex-direction:column;gap:12px;padding:24px;transition:border-color .15s,box-shadow .15s;display:flex}.price-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-soft)}.price-card.hot{border-color:var(--color-accent);box-shadow:0 0 0 1px var(--color-accent)}.price-popular{border-radius:var(--radius-sm);background:var(--color-accent-wash);color:var(--color-accent-text);font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.1em;align-self:flex-start;padding:3px 8px;font-size:.65rem;font-weight:700}.price-card h3{color:var(--color-ink);margin:0;font-size:1.1rem;font-weight:700}.price-amount{font-family:var(--font-display);letter-spacing:-.02em;color:var(--color-ink);margin:0;font-size:2.2rem;font-weight:800;line-height:1}.price-amount .per{color:var(--color-muted);font-size:1rem;font-weight:600}.price-was{color:var(--color-muted);margin-right:8px;font-size:1.1rem;font-weight:600;text-decoration:line-through}.price-features{gap:8px;margin:0;padding:0;list-style:none;display:grid}.price-features li{font-family:var(--font-serif);color:var(--color-muted);padding-left:18px;font-size:.95rem;line-height:1.5;position:relative}.price-features li:before{content:"";background:var(--color-accent);width:8px;height:8px;position:absolute;top:.45em;left:0}@media (max-width:900px){.price-grid-cards{grid-template-columns:1fr}}
