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64px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(80% 60% at 50% 30%,#000 40%,#0000 80%);mask-image:radial-gradient(80% 60% at 50% 30%,#000 40%,#0000 80%)}.landing-root main{z-index:1;position:relative}.landing-root section{padding:6rem 1.5rem}.landing-root .wrap{max-width:1200px;margin:0 auto}.landing-root .wrap-sm{max-width:980px;margin:0 auto}.landing-root nav.top{z-index:50;-webkit-backdrop-filter:blur(16px)saturate(1.4);background:#0b1120b8;border-bottom:1px solid #3b82f61a;position:sticky;top:0}.landing-root nav.top .inner{justify-content:space-between;align-items:center;gap:1rem;max-width:1200px;margin:0 auto;padding:.9rem 1.5rem;display:flex}.landing-root .brand{flex-shrink:0;align-items:center;display:inline-flex}.landing-root .brand-logo{width:auto;height:2rem;display:block}@media (min-width:640px){.landing-root .brand-logo{height:2.25rem}}.landing-root .nav-links{align-items:center;gap:1.1rem;display:flex}.landing-root .nav-links .deep{gap:1.1rem;display:flex}.landing-root .nav-links .deep a{color:var(--text-secondary);font-size:.88rem;transition:color .15s}.landing-root .nav-links .deep a:hover{color:var(--text-primary)}.landing-root .nav-blog{color:var(--text-secondary);font-size:.88rem;transition:color .15s}.landing-root .nav-blog:hover{color:var(--text-primary)}.landing-root .nav-login{color:var(--text-secondary);font-size:.88rem;transition:color .15s}.landing-root .nav-login:hover{color:var(--text-primary)}.landing-root .btn-nav-cta{isolation:isolate;white-space:nowrap;background:linear-gradient(#162036 0%,#0d1528 100%);border:1px solid #0000;border-radius:999px;align-items:center;padding:.45rem 1rem;font-size:.85rem;font-weight:500;transition:transform .15s,box-shadow .15s;display:inline-flex;position:relative;box-shadow:0 6px 18px -10px #22d3ee59}.landing-root .btn-nav-cta:before{content:"";border-radius:inherit;-webkit-mask-composite:xor;z-index:-1;background:linear-gradient(120deg,#60a5fae6 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.18s;display:inline-flex}.landing-root .btn-primary{background:var(--accent);color:#fff;box-shadow:0 0 24px #3b82f659,inset 0 1px #ffffff1f}.landing-root .btn-primary:hover{background:var(--accent-hover);box-shadow:0 0 32px #3b82f673,inset 0 1px #ffffff1f}.landing-root .btn-ghost{color:var(--text-primary);border:1px solid var(--l-border);background:0 0}.landing-root .btn-ghost:hover{border-color:var(--l-border-strong);background:#1e293b80}.landing-root .btn-quiet{color:var(--text-secondary);background:0 0}.landing-root .btn-quiet:hover{color:var(--text-primary)}.landing-root .btn-lg{border-radius:12px;padding:.85rem 1.5rem;font-size:.95rem}.landing-root .btn-hero{isolation:isolate;box-sizing:border-box;width:17rem;height:3.5rem;color:var(--text-primary);letter-spacing:-.005em;background:linear-gradient(#162036 0%,#0d1528 100%);border:1px solid #0000;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;gap:.75rem;padding:0 1.5rem;font-weight:500;transition:transform .2s,box-shadow .2s;display:inline-flex;position:relative;box-shadow:0 12px 36px -14px #22d3ee73,0 0 44px -10px #3b82f659}.landing-root .btn-hero:before{content:"";border-radius:inherit;-webkit-mask-composite:xor;z-index:-1;background:linear-gradient(120deg,#60a5fae6 0%,#22d3eee6 50%,#a78bfae6 100%);padding:1px;position:absolute;inset:-1px;-webkit-mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);-webkit-mask-position:0 0,0 0;-webkit-mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;-webkit-mask-clip:content-box,border-box;-webkit-mask-origin:content-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}.landing-root .btn-hero:hover{transform:translateY(-1px);box-shadow:0 18px 44px -14px #22d3ee99,0 0 60px -10px #3b82f68c}.landing-root .btn-hero-label{background:linear-gradient(120deg,#fff 0%,#c7dbff 70%,#a5f3fc 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var(--l-border);background:#1e293b66;border-radius:999px;align-items:center;gap:.5rem;margin-bottom:1rem;padding:.35rem .8rem;font-size:.72rem;font-weight:500;display:inline-flex}.landing-root .eyebrow .dot{background:var(--accent-hover);width:6px;height:6px;box-shadow:0 0 8px var(--accent-hover);border-radius:50%}.landing-root h1.hero-title{letter-spacing:-.035em;text-wrap:balance;margin:0 0 1rem;font-size:clamp(2.2rem,4.6vw,3.8rem);font-weight:600;line-height:1.05}.landing-root h1.hero-title .grad{background:linear-gradient(120deg,#fff 0%,#93c5fd 45%,#22d3ee 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.landing-root h1.hero-title .italic{color:var(--text-secondary);font-style:italic;font-weight:400}.landing-root .hero-sub{color:var(--text-secondary);max-width:60ch;margin:0 auto 1.4rem;font-size:1.02rem;line-height:1.55}.landing-root .hero-cta{flex-wrap:wrap;justify-content:center;align-items:center;gap:.75rem;display:flex}.landing-root .hero-meta{border:1px solid var(--l-border);background:#1e293b66;border-radius:999px;align-items:center;gap:1rem;margin-top:1.75rem;padding:.4rem 1.1rem;list-style:none;display:inline-flex}.landing-root .hero-meta li{align-items:baseline;gap:.45rem;display:inline-flex}.landing-root .hero-meta .hero-meta-sep{background:var(--l-border);align-self:stretch;width:1px;margin:.2rem 0;padding:0}.landing-root .hero-meta .k{font-weight:600;font-family:var(--font-geist-mono), ui-monospace, monospace;letter-spacing:.02em;font-size:.78rem}.landing-root .hero-meta .k.cyan{color:var(--l-high)}.landing-root .hero-meta .k.blue{color:var(--accent-hover)}.landing-root .hero-meta .v{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.12em;font-size:.72rem}.landing-root .access-banner{color:#cbd5e1;background:#a78bfa14;border:1px solid #a78bfa40;border-radius:10px;justify-content:center;align-items:center;gap:.6rem;max-width:560px;margin:.9rem auto 0;padding:.55rem .95rem;font-size:.78rem;display:flex}.landing-root .access-banner:before{content:"";background:var(--l-violet);width:7px;height:7px;box-shadow:0 0 8px var(--l-violet);border-radius:50%}.landing-root .sec-eyebrow{font-family:var(--font-geist-mono), ui-monospace, monospace;letter-spacing:.12em;color:var(--accent-hover);text-transform:uppercase;align-items:center;gap:.5rem;margin-bottom:1.25rem;font-size:.72rem;font-weight:500;display:inline-flex}.landing-root .sec-eyebrow .num{color:var(--l-text-faint)}.landing-root h2.sec-title{letter-spacing:-.025em;text-wrap:balance;max-width:22ch;margin:0 0 1rem;font-size:clamp(1.9rem,3.4vw,2.9rem);font-weight:600;line-height:1.05}.landing-root h2.sec-title.center{text-align:center;margin-left:auto;margin-right:auto}.landing-root h2.sec-title .italic{color:var(--text-secondary);font-style:italic;font-weight:400}.landing-root .sec-lead{color:var(--text-secondary);text-align:justify;text-wrap:pretty;max-width:62ch;font-size:1.02rem;line-height:1.65}.landing-root .sec-lead.center{text-align:center;margin-left:auto;margin-right:auto}.landing-root .sec-head-row{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:2rem;display:flex}.landing-root .walk-shell{border:1px solid var(--l-border);background:linear-gradient(#0f172aeb,#0a0f1deb);border-radius:20px;margin-top:3rem;overflow:hidden;box-shadow:0 40px 80px -30px #0009,0 0 60px #3b82f614}.landing-root .walk-tabs{border-bottom:1px solid var(--l-border);scrollbar-width:none;background:#0a0f1d99;gap:.25rem;padding:.75rem;display:flex;overflow-x:auto}.landing-root .walk-tabs::-webkit-scrollbar{display:none}.landing-root .walk-tab{color:var(--text-secondary);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:10px;flex-shrink:0;align-items:center;gap:.5rem;padding:.55rem .9rem;font-family:inherit;font-size:.82rem;font-weight:500;display:flex}.landing-root .walk-tab .num{font-family:var(--font-geist-mono), ui-monospace, monospace;color:var(--l-text-faint);font-size:.68rem}.landing-root .walk-tab.active{border-color:var(--l-border-strong);color:var(--text-primary);background:#3b82f61f}.landing-root .walk-tab.active .num{color:var(--accent-hover)}.landing-root .walk-tab.done,.landing-root .walk-tab.done .num{color:var(--l-added)}.landing-root .walk-body{grid-template-columns:1fr 1fr;min-height:460px;display:grid}@media (max-width:880px){.landing-root .walk-body{grid-template-columns:1fr}}.landing-root .walk-left{border-right:1px solid var(--l-border);flex-direction:column;gap:.75rem;padding:1.1rem;display:flex}@media (max-width:880px){.landing-root .walk-left{border-right:none;border-bottom:1px solid var(--l-border)}}.landing-root .walk-right{background:#0a0f1d66;flex-direction:column;gap:.75rem;padding:1.1rem;display:flex;overflow:hidden}.landing-root .pill-row{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.landing-root .pill{font-family:var(--font-geist-mono), ui-monospace, monospace;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--l-border);color:var(--text-secondary);background:#1e293b99;border-radius:6px;padding:.3rem .65rem;font-size:.68rem}.landing-root .pill.blue{color:var(--accent-hover);background:#3b82f614;border-color:#3b82f659}.landing-root .topic-box{border:1px solid var(--l-border);color:var(--text-primary);background:#1e293b80;border-radius:10px;padding:.7rem .85rem;font-size:.8rem;line-height:1.5}.landing-root .topic-box .label{color:var(--l-text-faint);letter-spacing:.1em;text-transform:uppercase;font-size:.65rem;font-family:var(--font-geist-mono), ui-monospace, monospace;margin-bottom:.35rem;display:block}.landing-root .essay-area{border:1px solid var(--l-border);min-height:280px;color:var(--text-primary);white-space:pre-wrap;background:#1e293b80;border-radius:10px;flex:1;padding:.75rem .9rem;font-size:.75rem;line-height:1.55;position:relative;overflow:hidden}.landing-root .essay-area .caret,.landing-root .improved-area .caret{background:var(--accent-hover);vertical-align:text-bottom;width:2px;height:1em;margin-left:1px;animation:1s steps(2,end) infinite landingBlink;display:inline-block}.landing-root .improved-area .caret{background:var(--accent-hover)}.landing-root .improved-area{border:1px solid var(--l-border);min-height:280px;color:var(--text-primary);white-space:pre-wrap;background:#0a0f1d99;border-radius:10px;flex:1;padding:.75rem .9rem;font-size:.72rem;line-height:1.55;position:relative;overflow:hidden}@keyframes landingBlink{50%{opacity:0}}.landing-root .essay-meta{font-family:var(--font-geist-mono), ui-monospace, 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monospace;color:var(--l-text-faint);background:#1e293b4d;border-radius:8px;align-items:center;gap:.7rem;padding:.55rem .8rem;font-size:.76rem;transition:all .4s;display:flex}.landing-root .stage-row.active{border-color:var(--accent);color:var(--text-primary);background:#3b82f614}.landing-root .stage-row.done{color:var(--l-added);background:#22c55e0d;border-color:#22c55e40}.landing-root .stage-row .icon{border:1.5px solid;border-radius:50%;flex-shrink:0;width:16px;height:16px;position:relative}.landing-root .stage-row.active .icon{border-color:var(--accent-hover)}.landing-root .stage-row.active .icon:after{content:"";border:1.5px solid #0000;border-top-color:var(--accent-hover);border-radius:50%;animation:.9s linear infinite landingSpin;position:absolute;inset:2px}.landing-root .stage-row.done .icon{border-color:var(--l-added);background:var(--l-added)}.landing-root .stage-row.done .icon:before{content:"";border:solid var(--background);border-width:0 1.8px 1.8px 0;width:4px;height:8px;position:absolute;top:1px;left:4px;transform:rotate(45deg)}@keyframes landingSpin{to{transform:rotate(360deg)}}.landing-root .score-panel{border:1px solid var(--l-border);background:linear-gradient(#0f172ab3,#0a0f1db3);border-radius:12px;padding:.85rem 1rem}.landing-root .score-head{justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:.7rem;display:flex}.landing-root .score-head .n{font-family:var(--font-geist-mono), ui-monospace, monospace;letter-spacing:-.03em;background:linear-gradient(180deg, var(--overall-c1,#fff) 0%, var(--overall-c2,#93c5fd) 100%);color:#0000;-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:600;line-height:1}.landing-root .score-head .lbl{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.1em;font-size:.7rem;font-family:var(--font-geist-mono), ui-monospace, monospace;text-align:right}.landing-root .score-head .lbl small{color:var(--l-text-faint)}.landing-root .crit{grid-template-columns:1fr auto;grid-template-areas:"l s""b b";align-items:center;gap:.25rem .75rem;display:grid}.landing-root .crit+.crit{margin-top:.5rem}.landing-root .crit-block+.crit-block{border-top:1px dashed #3b82f626;margin-top:.75rem;padding-top:.75rem}.landing-root .crit-feedback{color:var(--text-secondary);margin:.4rem 0 0;font-size:.74rem;line-height:1.5;transition:opacity .35s,transform .35s}.landing-root .crit-feedback-tag{color:var(--text-primary);font-weight:600}.landing-root .crit-checklist{border:1px solid var(--l-border);background:#0a0f1d8c;border-radius:8px;grid-template-columns:max-content 1fr;gap:.25rem .75rem;margin:.45rem 0 0;padding:.5rem .65rem;font-size:.7rem;line-height:1.45;display:grid}.landing-root .crit-checklist-row{display:contents}.landing-root .crit-checklist dt{color:var(--text-primary);font-weight:500}.landing-root .crit-checklist dd{color:var(--text-secondary);word-break:break-word;margin:0}.landing-root .crit-label{color:var(--text-primary);grid-area:l;font-size:.82rem}.landing-root .crit-score{font-family:var(--font-geist-mono), ui-monospace, monospace;text-align:right;grid-area:s;min-width:2.3rem;font-size:.86rem;font-weight:500}.landing-root .bar{background:#3b82f614;border-radius:999px;grid-area:b;height:5px;position:relative;overflow:hidden}.landing-root .bar:before{content:"";width:var(--w,0%);background:linear-gradient(90deg, var(--c,var(--accent)), var(--c2,var(--accent-hover)));box-shadow:0 0 10px var(--c,var(--accent));border-radius:999px;transition:width 1.2s cubic-bezier(.22,1,.36,1);position:absolute;top:0;bottom:0;left:0}.landing-root .check-list{border-top:1px dashed #3b82f62e;flex-direction:column;gap:.45rem;margin-top:1rem;padding-top:1rem;display:flex}.landing-root .check-item{color:var(--text-secondary);align-items:flex-start;gap:.55rem;font-size:.78rem;line-height:1.5;transition:all .35s;display:flex}.landing-root .check-item .i{border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:16px;height:16px;margin-top:.1rem;font-size:.7rem;font-weight:600;display:inline-flex}.landing-root .check-item .i.ok{color:var(--l-added);background:#22c55e26;border:1px solid #22c55e4d}.landing-root .check-item .i.warn{color:var(--l-mid);background:#f59e0b26;border:1px solid #f59e0b4d}.landing-root .check-item .i.bad{color:var(--l-low);background:#f43f5e26;border:1px solid #f43f5e4d}.landing-root .diff-view{border:1px solid var(--l-border);background:#0a0f1d99;border-radius:10px;padding:.75rem .9rem;font-size:.74rem;line-height:1.55;overflow:hidden}.landing-root .diff-view .added{color:var(--l-added);background:var(--l-added-bg);-webkit-box-decoration-break:clone;box-decoration-break:clone;border:1px solid #22c55e4d;border-radius:4px;padding:1px 4px}.landing-root .diff-view 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