@font-face{font-family:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/bricolage-grotesque-vietnamese-wght-normal-BUzh504Q.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/bricolage-grotesque-latin-ext-wght-normal-CcLUaPy7.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/bricolage-grotesque-latin-wght-normal-DLoelf7F.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-cyrillic-ext-wght-normal-d45eAU9y.woff2) format("woff2-variations");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-cyrillic-wght-normal-BAAhND-U.woff2) format("woff2-variations");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-greek-wght-normal-CmyJS8uq.woff2) format("woff2-variations");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-vietnamese-wght-normal-Dg1JeJN0.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-latin-ext-wght-normal-CIII54If.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-latin-wght-normal-IvpUvPa2.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-latin-400-normal-DMJ8VG8y.woff2) format("woff2"),url(/assets/ibm-plex-mono-latin-400-normal-CvHOgSBP.woff) format("woff")}:root{--pearl: #e6e7ea;--ink: #1d2229;--ink-soft: #454d57;--graphite: #2f353e;--glass: linear-gradient(150deg, #343a44db 0%, #4a4f59cf 55%, #5a5c66c7 100%);--glass-edge: #ffffff6b;--on-glass: #f7f9fb;--on-glass-soft: #dce1e6;--low: #8fd3e3;--mid: #f1c98c;--high: #f4a48d;--focus: #0f5f78;--display: "Bricolage Grotesque Variable", "IBM Plex Sans Variable", system-ui, sans-serif;--body: "IBM Plex Sans Variable", system-ui, sans-serif;--mono: "IBM Plex Mono", ui-monospace, monospace;--shadow: 0 30px 60px #2a2f3624, 0 6px 16px #2a2f361a, inset 0 1px #ffffff5c;--radius-lg: 28px;--radius-md: 18px;--ease: cubic-bezier(.2, .7, .2, 1);color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;font:400 17px/1.6 var(--body);color:var(--ink);background:var(--pearl);-webkit-font-smoothing:antialiased}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;background:url(/textures/atmosphere.png) center bottom / cover no-repeat,var(--pearl)}img,svg,canvas,video{display:block;max-width:100%}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit}:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:6px}.glass :focus-visible{outline-color:#fff}::selection{background:#cfe9f0;color:var(--ink)}.skip-link{position:fixed;top:12px;left:50%;z-index:200;transform:translate(-50%,-160%);padding:12px 18px;border-radius:12px;background:var(--graphite);color:#fff;text-decoration:none}.skip-link:focus{transform:translate(-50%)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.shell{width:min(1240px,100% - 48px);margin-inline:auto}section[id]{scroll-margin-top:96px}.glass{color:var(--on-glass);background:var(--glass);border:1px solid var(--glass-edge);box-shadow:var(--shadow);backdrop-filter:blur(22px) saturate(1.1);-webkit-backdrop-filter:blur(22px) saturate(1.1)}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.glass{background:#3d434ded}}.btn,.btn-glass{position:relative;isolation:isolate;overflow:hidden;touch-action:manipulation;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s,border-color .18s,color .18s}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 24px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid transparent}.btn:before,.btn-glass:before{content:"";position:absolute;top:1px;right:1px;bottom:52%;left:1px;z-index:-1;border-radius:inherit;background:linear-gradient(180deg,#ffffff59,#fff0);pointer-events:none;transition:opacity .18s}.btn:hover,.btn-glass:hover:not(:disabled){transform:translateY(-1px)}.btn:active,.btn-glass:active:not(:disabled){transform:translateY(1px) scale(.985)}.btn:active:before,.btn-glass:active:before{opacity:.45}.btn-primary{color:#fff;background:linear-gradient(180deg,#535a66,#333941 48%,#23282f);border-color:#1b1f25;box-shadow:inset 0 1px #ffffff5c,inset 0 -3px 8px #0000004d,0 1px 1px #0000002e,0 10px 22px #1c21283d}.btn-primary:hover{box-shadow:inset 0 1px #ffffff6b,inset 0 -3px 8px #0000004d,0 1px 1px #0000002e,0 14px 28px #1c212847}.btn-light{color:var(--ink);background:linear-gradient(180deg,#fff,#f1f3f5 55%,#dfe3e8);border-color:#fff;box-shadow:inset 0 1px #fff,inset 0 -3px 6px #9aa3ae40,0 1px 1px #1d222926,0 10px 22px #1d22292e}.btn-light:before{background:linear-gradient(180deg,#fffc,#fff0)}.btn-quiet{color:var(--ink);background:linear-gradient(180deg,#ffffffd9,#eef0f3b8);border-color:#ffffffe6;box-shadow:inset 0 1px #fff,inset 0 -2px 5px #8b94a033,0 8px 18px #1d22291f;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.glass .btn-quiet{color:#fff;background:linear-gradient(180deg,#ffffff38,#ffffff14);border-color:#ffffff5c;box-shadow:inset 0 1px #fff6,inset 0 -2px 6px #0000002e,0 6px 14px #11151a2e}.nav{position:sticky;top:14px;z-index:50;display:flex;align-items:center;gap:18px;width:min(1240px,100% - 32px);margin:14px auto 0;padding:10px 12px 10px 18px;border-radius:999px}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font:700 18px/1 var(--display);letter-spacing:.01em}.brand .logo-mark{flex:none;filter:drop-shadow(0 4px 8px #0f131a40)}.nav-links{display:flex;gap:2px;margin-left:10px}.nav-links a{padding:10px 13px;border-radius:999px;font-size:14px;color:var(--on-glass-soft);text-decoration:none}.nav-links a:hover{color:#fff;background:#ffffff1a}.nav-actions{margin-left:auto;display:flex;align-items:center;gap:8px}.nav-actions .btn{min-height:42px;padding:0 18px;font-size:14px}.nav-user{font-size:14px;color:var(--on-glass-soft);padding-inline:6px}.nav-actions .nav-menu{display:none}.hero{position:relative;padding:64px 0 30px}.hero-copy{max-width:1180px}.hero h1{margin:0;font:760 clamp(46px,7vw,100px)/.93 var(--display);font-variation-settings:"wdth" 86;letter-spacing:-.038em;text-wrap:balance}.hero-lede{max-width:58ch;margin:26px 0 0;font-size:clamp(18px,1.6vw,21px);color:var(--ink-soft)}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.signal-stage{position:relative;margin-top:44px;height:clamp(240px,31vw,360px);border-radius:var(--radius-lg);overflow:hidden}.signal-stage canvas{width:100%;height:100%;cursor:crosshair;touch-action:pan-y}.signal-top{position:absolute;top:18px;left:22px;right:22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 18px;pointer-events:none}.signal-top span{font-size:13px;color:var(--on-glass-soft)}.signal-readout{position:absolute;left:22px;bottom:18px;display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;font-size:13px;color:var(--on-glass-soft);pointer-events:none}.signal-readout b{font:500 13px var(--mono);color:#fff;font-weight:500}.signal-caption{position:absolute;right:22px;bottom:18px;font-size:12px;color:var(--on-glass-soft);pointer-events:none}.swatch{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:-1px}.swatch.square{border-radius:2px}.section{padding:116px 0 0}.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px 48px;align-items:end;margin-bottom:40px}.section-head h2{margin:0;font:720 clamp(34px,4.3vw,58px)/1.01 var(--display);font-variation-settings:"wdth" 88;letter-spacing:-.03em;text-wrap:balance}.section-head p{margin:0;max-width:56ch;color:var(--ink-soft)}.questions{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.4fr);border-radius:var(--radius-lg);overflow:hidden}.question-list{display:flex;flex-direction:column;padding:14px;gap:6px;border-right:1px solid #ffffff2e}.question-tab{position:relative;text-align:left;border:0;background:transparent;padding:18px;border-radius:18px;color:var(--on-glass-soft)}.question-tab:hover{background:#ffffff0f}.question-tab>span:not(.pill){position:relative;z-index:1;display:block}.question-tab strong{display:block;font:650 20px/1.2 var(--display);color:#fff}.question-tab small{display:block;margin-top:4px;font-size:14px}.question-tab[aria-selected=true] strong,.question-tab[aria-selected=true] small{color:var(--ink)}.pill{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;background:linear-gradient(145deg,#ffffffeb,#e9ebeed4);box-shadow:inset 0 1px #fff,0 8px 18px #1d222933}.question-panel{padding:36px 40px 40px;min-height:440px}.question-panel h3{margin:0 0 12px;font:650 30px/1.15 var(--display);letter-spacing:-.02em}.question-panel p{margin:0;color:var(--on-glass-soft);max-width:60ch}.question-figure{height:140px;margin:0 0 24px}.question-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:26px 0 0}.question-facts div{padding:18px;border-radius:var(--radius-md);background:#ffffff14;border:1px solid #ffffff29}.question-facts dt{font-size:13px;color:var(--on-glass-soft);margin-bottom:6px}.question-facts dd{margin:0;font-size:15px;color:#fff}.walk{border-radius:var(--radius-lg);padding:14px}.walk-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;padding:6px;border-radius:22px;background:#ffffff14}.walk-step{position:relative;border:0;background:transparent;border-radius:16px;padding:14px 16px;text-align:left;color:var(--on-glass-soft);min-height:60px}.walk-step>span:not(.pill){position:relative;z-index:1;display:flex;gap:12px;align-items:baseline}.walk-step b{font:500 13px var(--mono)}.walk-step strong{font:600 16px var(--body);color:#fff}.walk-step[aria-selected=true] strong,.walk-step[aria-selected=true] b{color:var(--ink)}.walk-body{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:14px;margin-top:14px}.walk-card{border-radius:22px;padding:26px;background:#ffffff12;border:1px solid #ffffff26;min-width:0}.walk-card h3{margin:0 0 6px;font:650 22px/1.2 var(--display)}.walk-card p{margin:0;color:var(--on-glass-soft);font-size:15px}.illustration-note{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;padding:6px 12px;border-radius:999px;font-size:12px;color:var(--ink);background:#f5f6f7e6}.score-read{display:flex;align-items:baseline;gap:14px;margin:16px 0 10px}.score-read strong{font:720 72px/1 var(--display);letter-spacing:-.04em;font-variant-numeric:tabular-nums}.score-read span{font-size:15px;color:var(--on-glass-soft)}.meter{height:8px;border-radius:99px;background:#ffffff2e;overflow:hidden}.meter span{display:block;height:100%;border-radius:inherit;transform-origin:left}.mini-wave{position:relative;display:flex;align-items:center;gap:3px;height:96px;margin-top:22px;cursor:pointer;border-radius:10px}.mini-wave i{flex:1;border-radius:3px;background:linear-gradient(#cbeef6,#7db3c3);pointer-events:none}.mini-wave .head{position:absolute;top:0;bottom:0;width:2px;background:#ffd9bf;pointer-events:none}.toggle-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.chip{position:relative;isolation:isolate;overflow:hidden;min-height:44px;padding:0 18px;border-radius:999px;border:1px solid #ffffff5c;color:#fff;font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg,#ffffff30,#ffffff0f);box-shadow:inset 0 1px #ffffff5c,inset 0 -2px 6px #00000026,0 4px 10px #11151a24;transition:transform .18s var(--ease),background .18s,color .18s}.chip:hover{background:linear-gradient(180deg,#ffffff42,#ffffff1a)}.chip:active{transform:scale(.97)}.chip[aria-pressed=true]{color:var(--ink);border-color:#fff;background:linear-gradient(180deg,#fff,#eef0f3 55%,#dde1e6);box-shadow:inset 0 1px #fff,inset 0 -3px 6px #9aa3ae4d,0 6px 14px #11151a33}.compare{display:grid;gap:14px;margin-top:22px}.compare-row{display:grid;grid-template-columns:116px minmax(0,1fr) 52px;gap:12px;align-items:center;font-size:14px}.compare-row output{font:500 14px var(--mono);text-align:right}.checklist{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}.checklist li{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:14px;background:#ffffff10;border:1px solid #ffffff1f;font-size:15px}.checklist svg{flex:none;margin-top:3px}.bench{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);gap:14px;border-radius:var(--radius-lg);padding:14px}.bench-field{display:flex;flex-direction:column;justify-content:center;border-radius:22px;padding:26px;background:#ffffff10;border:1px solid #ffffff24}.bench-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.bench-group h3{margin:0 0 12px;font:600 15px var(--body);color:var(--on-glass-soft)}.dots{display:grid;grid-template-columns:repeat(40,1fr);gap:2px}.dot{aspect-ratio:1;border-radius:50%;background:#ffffff40;transition:background-color .6s var(--ease),transform .6s var(--ease),border-radius .6s}.dot.correct-genuine{background:#ffffff8c}.dot.caught{background:var(--low)}.dot.missed{background:var(--mid);transform:scale(.8);border-radius:2px}.dot.flagged{background:var(--high);transform:scale(.8);border-radius:2px}.bench-side{border-radius:22px;padding:26px;display:flex;flex-direction:column;gap:18px;background:#ffffff10;border:1px solid #ffffff24}.bench-side .toggle-row{margin-top:0}.stat{display:flex;flex-direction:column;gap:4px;padding-bottom:14px;border-bottom:1px solid #ffffff26}.stat strong{font:720 46px/1 var(--display);letter-spacing:-.03em;font-variant-numeric:tabular-nums}.stat span{font-size:14px;color:var(--on-glass-soft)}.bench-note{font-size:14px;color:var(--on-glass-soft);margin:0}.legend{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:20px;font-size:13px;color:var(--on-glass-soft)}.pipeline{border-radius:var(--radius-lg);padding:34px}.rail{position:relative;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}.rail-track{position:absolute;left:8.33%;right:8.33%;top:29px;height:2px;background:#fff3}.rail-progress{position:absolute;top:0;right:0;bottom:0;left:0;background:#fff;transform-origin:left}.node{position:relative;border:0;background:transparent;color:var(--on-glass-soft);display:flex;flex-direction:column;align-items:center;gap:12px;padding:0 4px 6px;text-align:center}.node-icon{width:60px;height:60px;border-radius:50%;display:grid;place-items:center;background:#3a404a;border:1px solid #ffffff5c;color:#fff;transition:background-color .2s,color .2s,transform .25s var(--ease)}.node:hover .node-icon{transform:scale(1.05)}.node[aria-selected=true] .node-icon{background:#f5f6f7;color:var(--ink);transform:scale(1.08)}.node strong{font-size:15px;color:#fff}.node small{font-size:12px}.node-detail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;margin-top:30px;padding:26px;border-radius:22px;background:#ffffff12;border:1px solid #ffffff24}.node-detail h3{margin:0 0 8px;font:650 24px/1.2 var(--display)}.node-detail p{margin:0;color:var(--on-glass-soft)}.node-detail ul{margin:0;padding-left:18px;color:var(--on-glass-soft);font-size:15px;display:grid;gap:6px}.demo-frame{position:relative;aspect-ratio:16 / 9;border-radius:var(--radius-lg);overflow:hidden;display:grid;place-items:center;text-align:center}.demo-frame video,.demo-frame iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0;background:#000}.demo-placeholder{position:relative;z-index:1;max-width:480px;padding:24px}.demo-placeholder h3{margin:20px 0 8px;font:650 30px/1.15 var(--display)}.demo-placeholder p{margin:0;color:var(--on-glass-soft)}.demo-play{width:88px;height:88px;margin:0 auto;border-radius:50%;display:grid;place-items:center;background:#ffffff1f;border:1px solid #ffffff66}.demo-rings{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;opacity:.5}.limits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid #1d222926}.limit{padding:26px 26px 26px 0;border-bottom:1px solid #1d222926;display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px}.limit:nth-child(odd){border-right:1px solid #1d222926}.limit:nth-child(2n){padding-left:26px}.limit h3{margin:0 0 4px;font:650 19px/1.3 var(--body)}.limit p{margin:0;font-size:15px;color:var(--ink-soft)}.limit svg{margin-top:4px;color:#6f4436}.faq{display:grid;gap:10px;max-width:900px}.faq-item{border-radius:var(--radius-md);overflow:hidden}.faq-item h3{margin:0}.faq-item button{width:100%;min-height:64px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 22px;border:0;background:transparent;text-align:left;font-weight:600;font-size:17px}.faq-item button svg{flex:none;transition:transform .2s var(--ease)}.faq-item button[aria-expanded=true] svg{transform:rotate(45deg)}.faq-answer p{margin:0;padding:0 22px 22px;color:var(--on-glass-soft);max-width:70ch}.closing{margin-top:116px;border-radius:36px;padding:clamp(36px,6vw,72px);display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:32px;align-items:end}.closing h2{margin:0;font:760 clamp(36px,5vw,66px)/1 var(--display);letter-spacing:-.032em;font-variation-settings:"wdth" 86}.closing p{margin:16px 0 0;color:var(--on-glass-soft);max-width:48ch}.closing-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}.footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;padding:36px 0 120px;font-size:14px;color:var(--ink-soft)}.footer p{margin:0;max-width:70ch}.auth{min-height:100dvh;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;padding:20px}.auth-art{border-radius:32px;padding:40px;display:flex;flex-direction:column;position:relative;overflow:hidden;min-height:540px}.auth-art canvas{position:absolute;left:0;right:0;bottom:0;height:52%;width:100%}.auth-logo{position:relative;margin-top:36px;display:inline-grid;filter:drop-shadow(0 10px 20px #0d11174d)}.auth-art h1{position:relative;margin:22px 0 0;font:760 clamp(38px,4.5vw,62px)/.97 var(--display);letter-spacing:-.032em;font-variation-settings:"wdth" 86;max-width:13ch}.auth-art p{position:relative;margin:16px 0 0;color:var(--on-glass-soft);max-width:40ch}.auth-panel{display:grid;place-items:center;padding:20px}.auth-form{width:min(440px,100%)}.auth-form h2{margin:0 0 6px;font:720 38px/1.08 var(--display);letter-spacing:-.02em}.auth-form>p{margin:0 0 28px;color:var(--ink-soft)}.field{display:grid;gap:8px;margin-bottom:18px}.field label{font-weight:600;font-size:15px}.field-input{position:relative}.field input{width:100%;min-height:52px;padding:12px 16px;border-radius:14px;border:1px solid #a9b0b8;background:#ffffffe0;font-size:16px}.field input.has-reveal{padding-right:56px}.field input:focus-visible{outline:3px solid var(--focus);outline-offset:1px;border-color:var(--focus)}.field input[aria-invalid=true]{border-color:#a3402c}.field-hint{font-size:13px;color:var(--ink-soft)}.field-error{font-size:14px;color:#93351f}.reveal{position:absolute;right:4px;top:50%;transform:translateY(-50%);min-width:44px;min-height:44px;border:0;background:transparent;display:grid;place-items:center;color:var(--ink-soft);border-radius:10px}.form-error{margin:0 0 18px;padding:14px 16px;border-radius:14px;background:#fbe9e3;color:#7d2f1f;border:1px solid #efc2b4;font-size:15px}.auth-form .btn{width:100%}.auth-switch{margin-top:20px;text-align:center;font-size:15px;color:var(--ink-soft)}.auth-switch a{font-weight:600}.auth-switch .link-button{border:0;background:none;padding:0;font:inherit;font-weight:600;color:var(--ink);text-decoration:underline;cursor:pointer}.btn-google{color:#1f1f1f;background:linear-gradient(180deg,#fff,#fbfbfc 60%,#f0f2f4);border-color:#d5d9de;box-shadow:inset 0 1px #fff,inset 0 -2px 5px #9aa3ae33,0 1px 1px #1d22291f,0 8px 18px #1d222924}.btn-google:before{background:linear-gradient(180deg,#fffc,#fff0)}.btn-google:hover{box-shadow:inset 0 1px #fff,inset 0 -2px 5px #9aa3ae33,0 1px 1px #1d22291f,0 12px 24px #1d22292e}.auth-divider{display:flex;align-items:center;gap:14px;margin:22px 0;font-size:14px;color:var(--ink-soft)}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:#a9b0b880}.auth-back{position:relative;display:inline-flex;align-items:center;gap:8px;align-self:flex-start;min-height:44px;text-decoration:none;font-size:14px;color:var(--on-glass-soft)}.auth-back:hover{color:#fff}.assistant-launch{position:fixed;right:26px;bottom:26px;z-index:90;width:64px;height:64px;padding:0;border:0;border-radius:20px;background:none;transition:opacity .2s,transform .2s var(--ease)}.assistant-launch.is-hidden{opacity:0;pointer-events:none;transform:scale(.85)}.launch-float{position:relative;display:grid;border-radius:20px;filter:drop-shadow(0 18px 22px #1c21284d) drop-shadow(0 4px 6px #1c212833);animation:float 4.2s ease-in-out infinite;transition:transform .2s var(--ease)}.launch-float .logo-mark{border-radius:20px}.assistant-launch:hover .launch-float{transform:translateY(-4px) scale(1.04);animation-play-state:paused}.assistant-launch:active .launch-float{transform:scale(.95)}.assistant-launch:focus-visible{outline:3px solid var(--focus);outline-offset:5px;border-radius:22px}@keyframes float{0%,to{translate:0 0}50%{translate:0 -7px}}.assistant-launch .pulse{position:absolute;right:-3px;top:-3px;width:14px;height:14px;border-radius:50%;background:var(--low);border:2.5px solid #eef0f2;animation:pulse 2.6s infinite}@keyframes pulse{0%{box-shadow:0 0 #8fd3e3aa}70%{box-shadow:0 0 0 10px #8fd3e300}to{box-shadow:0 0 #8fd3e300}}.assistant-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:94;background:#1d222938;backdrop-filter:blur(10px) saturate(.9);-webkit-backdrop-filter:blur(10px) saturate(.9)}.assistant{position:fixed;right:22px;bottom:22px;z-index:95;width:min(430px,calc(100vw - 32px));height:min(680px,calc(100dvh - 44px));display:flex;flex-direction:column;border-radius:28px;overflow:hidden;transform-origin:bottom right;color:var(--on-glass);background:linear-gradient(165deg,#3a404ae8,#2c3139f0);border:1px solid #ffffff4d;box-shadow:0 40px 80px #0d11174d,0 12px 24px #0d111733,inset 0 1px #ffffff40;backdrop-filter:blur(28px) saturate(1.1);-webkit-backdrop-filter:blur(28px) saturate(1.1)}.assistant-head{display:flex;align-items:center;gap:14px;padding:18px 16px 16px 20px;border-bottom:1px solid #ffffff1f;background:linear-gradient(180deg,#ffffff12,#fff0)}.head-avatar{position:relative;display:grid;flex:none}.head-avatar .logo-mark{border-radius:13px;box-shadow:0 6px 14px #0d111759}.online{position:absolute;right:-2px;bottom:-2px;width:12px;height:12px;border-radius:50%;background:#7fd8a8;border:2px solid #30353d}.head-text{min-width:0}.head-text h2{margin:0;font:650 17px/1.2 var(--display);letter-spacing:-.01em}.head-text p{margin:3px 0 0;font-size:12.5px;color:var(--on-glass-soft)}.head-actions{margin-left:auto;display:flex;gap:8px}.icon-btn{min-width:42px;min-height:42px;display:grid;place-items:center;border-radius:13px;color:#fff;border:1px solid #ffffff4d;background:linear-gradient(180deg,#ffffff2e,#ffffff0d);box-shadow:inset 0 1px #ffffff52,inset 0 -2px 5px #00000026}.icon-btn:hover{background:linear-gradient(180deg,#ffffff40,#ffffff17)}.assistant-log{flex:1;overflow-y:auto;padding:20px 18px 12px;display:flex;flex-direction:column;gap:14px;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#ffffff38 transparent}.bot-row{display:flex;align-items:flex-start;gap:10px;max-width:94%}.bot-avatar{flex:none;margin-top:2px}.bot-avatar .logo-mark{border-radius:9px}.msg{padding:12px 15px;border-radius:18px;font-size:14.5px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.msg-bot{background:#ffffff14;border:1px solid #ffffff21;border-top-left-radius:6px;min-width:0}.msg-user{align-self:flex-end;max-width:82%;color:var(--ink);border-bottom-right-radius:6px;background:linear-gradient(180deg,#fff,#eceff2);box-shadow:inset 0 -2px 4px #9aa3ae33,0 4px 10px #0d111726}.msg-error{background:#6f433ccc;border-color:#ffd0c355}.error-line{display:flex;gap:8px;align-items:flex-start}.error-line svg{flex:none;margin-top:3px}.msg-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;margin-top:12px;padding-top:10px;border-top:1px solid #ffffff1a;white-space:normal}.source-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--on-glass-soft)}.link-btn{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:0 12px;border-radius:999px;border:1px solid #ffffff4d;background:#ffffff1a;color:#fff;font-size:12.5px;font-weight:600}.link-btn:hover{background:#ffffff2e}.msg-error .link-btn{margin-top:10px}.typing{display:inline-flex;gap:5px;padding:15px 16px}.typing i{width:7px;height:7px;border-radius:50%;background:#fff;opacity:.45;animation:blink 1.2s infinite}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}@keyframes blink{50%{opacity:1}}.suggestions{display:grid;gap:8px;margin:2px 0 0 38px}.suggestions-title{margin:0 0 2px;font-size:12px;font-weight:600;color:var(--on-glass-soft)}.suggestion{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;padding:10px 14px;border-radius:14px;border:1px solid #ffffff2e;color:#fff;font-size:14px;text-align:left;background:linear-gradient(180deg,#ffffff1c,#ffffff0a);transition:background .18s,border-color .18s,transform .18s var(--ease)}.suggestion svg{flex:none;opacity:.6;transition:transform .18s var(--ease),opacity .18s}.suggestion:hover{background:linear-gradient(180deg,#ffffff2e,#ffffff12);border-color:#ffffff52}.suggestion:hover svg{transform:translate(3px);opacity:1}.assistant-form{padding:12px 14px 14px;border-top:1px solid #ffffff1f;background:#0d11171a}.composer{display:flex;align-items:flex-end;gap:8px;padding:6px 6px 6px 16px;border-radius:20px;background:#ffffff14;border:1px solid #ffffff38;box-shadow:inset 0 2px 6px #0000002e;transition:border-color .18s,box-shadow .18s}.composer:focus-within{border-color:#ffffffb3;box-shadow:inset 0 2px 6px #0000002e,0 0 0 3px #8fd3e359}.composer textarea{flex:1;min-height:44px;max-height:132px;resize:none;padding:11px 0;border:0;background:transparent;color:#fff;font-size:15px;line-height:1.45;outline:none}.composer textarea:focus-visible{outline:none}.composer textarea::placeholder{color:#dce1e699}.send-btn{flex:none;width:44px;height:44px;display:grid;place-items:center;border-radius:14px;color:var(--ink);border:1px solid #fff;background:linear-gradient(180deg,#fff,#e6e9ed);box-shadow:inset 0 -2px 4px #9aa3ae4d,0 4px 10px #0d111733}.send-btn:disabled{opacity:.45}.composer-hint{margin:8px 4px 0;font-size:11.5px;line-height:1.45;color:#dce1e6b3}.toast{position:fixed;left:50%;top:86px;z-index:120;translate:-50% 0;padding:12px 18px;border-radius:14px;font-size:15px}@media(max-width:1080px){.nav-links{display:none}.nav-actions .nav-menu{display:grid}.nav.open .nav-links{display:flex;flex-direction:column;position:absolute;top:calc(100% + 8px);left:0;right:0;margin:0;padding:10px;border-radius:24px;background:#3a404af5;border:1px solid var(--glass-edge);box-shadow:var(--shadow)}.nav.open .nav-links a{padding:14px 16px;font-size:16px}.questions,.walk-body,.bench,.closing,.node-detail{grid-template-columns:minmax(0,1fr)}.question-list{border-right:0;border-bottom:1px solid #ffffff2e}.closing-actions{justify-content:flex-start}}@media(max-width:760px){body{font-size:16px}.shell{width:min(1240px,100% - 32px)}.hero{padding-top:54px}.section{padding-top:88px}.section-head{grid-template-columns:minmax(0,1fr)}.nav-actions .btn-quiet,.nav-user{display:none}.question-panel{padding:26px 22px;min-height:0}.question-facts,.walk-steps{grid-template-columns:minmax(0,1fr)}.rail{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:22px}.rail-track{display:none}.pipeline{padding:22px}.limits{grid-template-columns:minmax(0,1fr)}.limit,.limit:nth-child(2n){padding:22px 0}.limit:nth-child(odd){border-right:0}.auth{grid-template-columns:minmax(0,1fr);padding:12px}.auth-art{min-height:320px;padding:26px}.dots{gap:1px}.bench-groups{gap:16px}.signal-caption,.signal-top span+span{display:none}.assistant-launch{right:18px;bottom:18px}.assistant{right:10px;left:10px;bottom:10px;width:auto;height:calc(100dvh - 20px);border-radius:24px}.compare-row{grid-template-columns:96px minmax(0,1fr) 48px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}