:root,:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--ink:#0b0d0f;--surface:#14171a;--raised:#1b1f24;--hairline:#262b31;--text-hi:#eceff2;--text-mid:#a5adb6;--text-low:#6b747d;--accent:#7a8f63;--accent-hi:#8fa877;--accent-press:#6b7e55;--accent-soft:#7a8f631f;--accent-soft-2:#7a8f630f;--accent-border:#7a8f6359;--on-accent:#0b0d0f;--success:#4a8f5a;--success-soft:#4a8f5a1f;--warning:#c77b49;--warning-soft:#c77b491f;--danger:#b95d5d;--danger-soft:#b95d5d1f;--mastered:#4a8f5a;--at-risk:#c77b49;--verify-border:#7a8f6359;--verify-agree:#4a8f5a;--verify-differ:#c77b49;--focus-ring:#8fa877;--subject-physics:#5e8ca6;--subject-chemistry:#c18a52;--subject-maths:#9a7fa8;--sidebar-bg:var(--ink);--input-bg:var(--raised);--bg-base:var(--ink);--bg-surface:var(--surface);--bg-elevated:var(--raised);--border:var(--hairline);--border-hover:#323941;--text-primary:var(--text-hi);--text-secondary:var(--text-mid);--text-muted:var(--text-low);--accent-hover:var(--accent-hi)}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ink:#fbfaf7;--surface:#fff;--raised:#f4f2ec;--hairline:#e5e1d8;--text-hi:#16181b;--text-mid:#565e66;--text-low:#8b939c;--accent:#5e6f49;--accent-hi:#7a8f63;--accent-press:#4d5c3c;--accent-soft:#5e6f491f;--accent-soft-2:#5e6f490f;--accent-border:#5e6f4959;--on-accent:#fff;--success:#1f9d63;--success-soft:#1f9d631f;--warning:#c9551f;--warning-soft:#c9551f1f;--danger:#b95d5d;--danger-soft:#b95d5d1f;--mastered:#1f9d63;--at-risk:#c9551f;--verify-border:#5e6f4959;--verify-agree:#1f9d63;--verify-differ:#c9551f;--focus-ring:#7a8f63;--subject-physics:#5e8ca6;--subject-chemistry:#c18a52;--subject-maths:#9a7fa8;--sidebar-bg:#f4f2ec;--input-bg:var(--surface);--bg-base:var(--ink);--bg-surface:var(--surface);--bg-elevated:var(--raised);--border:var(--hairline);--border-hover:#d4cfc2;--text-primary:var(--text-hi);--text-secondary:var(--text-mid);--text-muted:var(--text-low);--accent-hover:var(--accent-hi)}:root{--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-6:24px;--space-8:32px;--space-12:48px;--radius:10px;--font-ui:"Hanken Grotesk", system-ui, sans-serif;--font-reading:"Newsreader", Georgia, serif;--font-mono:"JetBrains Mono", monospace;--text-base:1rem;--text-md:1.0625rem;--text-lg:1.1875rem;--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--dur-fast:.12s;--dur-base:.2s;--dur-slow:.32s}*,:before,:after{box-sizing:border-box;transition:background-color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);margin:0;padding:0}body{font-family:var(--font-ui);background:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100dvh;overflow:hidden}button,input,select,textarea{font-family:var(--font-ui)}code,kbd,samp,pre{font-family:var(--font-mono)}#root{width:100%;height:100dvh}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2)format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff)format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff)format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff)format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2)format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff)format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2)format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff)format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2)format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff)format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2)format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff)format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2)format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff)format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2)format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff)format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff)format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff)format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff)format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2)format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff)format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2)format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff)format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2)format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff)format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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)format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff)format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2)format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff)format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2)format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff)format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.17.0"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}.landing-page{background:var(--bg-base);color:var(--text-primary);font-family:var(--font-ui);scroll-behavior:smooth;position:fixed;inset:0;overflow:hidden auto}.land-fade{opacity:0;transition:opacity .75s var(--ease-out,cubic-bezier(.16, 1, .3, 1)), transform .75s var(--ease-out,cubic-bezier(.16, 1, .3, 1));transform:translateY(32px)}.land-fade--visible{opacity:1;transform:none}[data-tilt]{transform:perspective(900px) rotateX(var(--tilt-rx,0deg)) rotateY(var(--tilt-ry,0deg)) translateZ(0px);will-change:transform;overflow:hidden;transition:transform .12s,border-color .2s,box-shadow .2s!important}[data-tilt]:not(:hover){transition:transform .55s cubic-bezier(.16,1,.3,1),border-color .2s,box-shadow .2s!important}.land-tilt-glare{border-radius:inherit;background:radial-gradient(circle at var(--gx,50%) var(--gy,50%), #ffffff12 0%, transparent 55%);opacity:var(--glare-o,0);pointer-events:none;z-index:5;transition:opacity .3s;position:absolute;inset:0}.land-nav{z-index:100;align-items:center;height:64px;padding:0 clamp(1rem,5vw,3rem);transition:background .3s,-webkit-backdrop-filter .3s,backdrop-filter .3s,border-color .3s;display:flex;position:sticky;top:0}.land-nav--scrolled{-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border);background:#0b0d0fd9}.land-nav-inner{justify-content:space-between;align-items:center;width:100%;max-width:1100px;margin:0 auto;display:flex}.land-logo{font-family:var(--font-reading);color:var(--text-primary);letter-spacing:-.01em;cursor:pointer;background:0 0;border:none;padding:0;font-size:1.35rem;font-style:italic;font-weight:400;line-height:1;transition:color .15s}.land-logo em{color:var(--accent);font-style:normal}.land-logo:hover{color:var(--text-hi)}.land-nav-cta{align-items:center;gap:.75rem;display:flex}.land-btn-gold{background:var(--accent);color:var(--on-accent);font-size:.9rem;font-weight:600;font-family:var(--font-ui);cursor:pointer;white-space:nowrap;letter-spacing:.01em;border:none;border-radius:8px;align-items:center;padding:.5rem 1.25rem;text-decoration:none;transition:background .15s,transform .12s,box-shadow .2s;display:inline-flex;position:relative;overflow:hidden}.land-btn-gold:after{content:"";pointer-events:none;background:linear-gradient(90deg,#0000,#ffffff38,#0000);width:65%;height:100%;animation:5s 2.5s infinite btn-shimmer;position:absolute;top:0;left:-120%;transform:skew(-18deg)}@keyframes btn-shimmer{0%{left:-120%}30%,to{left:140%}}.land-btn-gold:hover{background:var(--accent-hi);transform:translateY(-1px);box-shadow:0 4px 18px #7a8f6359}.land-btn-gold:active{box-shadow:none;transform:translateY(0)}.land-btn-outline{color:var(--text-primary);border:1px solid var(--border-hover);font-size:.9rem;font-weight:500;font-family:var(--font-ui);cursor:pointer;white-space:nowrap;background:0 0;border-radius:8px;align-items:center;padding:.5rem 1.25rem;transition:border-color .15s,color .15s,background .15s;display:inline-flex}.land-btn-outline:hover{border-color:var(--accent-border);background:var(--accent-soft)}.land-btn-ghost{color:var(--text-secondary);font-size:.9rem;font-family:var(--font-ui);cursor:pointer;background:0 0;border:none;align-items:center;padding:.5rem 1rem;text-decoration:none;transition:color .15s;display:inline-flex}.land-btn-ghost:hover{color:var(--text-primary)}.land-btn-lg{border-radius:10px;padding:.8rem 2.25rem;font-size:1rem}.land-btn-xl{letter-spacing:.01em;border-radius:12px;padding:1rem 3rem;font-size:1.1rem;font-weight:700}.land-section-h2{font-family:var(--font-reading);text-align:center;color:var(--text-hi);letter-spacing:-.01em;margin-bottom:2.75rem;font-size:clamp(1.9rem,4.5vw,2.85rem);font-style:italic;font-weight:400;line-height:1.15}.land-hero{padding:clamp(5.5rem,13vw,10rem) clamp(1rem,5vw,2rem) clamp(4.5rem,10vw,8rem);position:relative;overflow:hidden}.land-hero-bg{pointer-events:none;z-index:0;position:absolute;inset:0}.land-hero-glow{width:min(800px,110vw);height:480px;transform:translateX(calc(-50% + var(--px,0px))) translateY(var(--py,0px));background:radial-gradient(#7a8f6326 0%,#0000 68%);border-radius:50%;transition:transform .9s cubic-bezier(.16,1,.3,1);position:absolute;top:-5%;left:50%}.land-orb-ring{pointer-events:none;border-radius:50%;position:absolute;top:50%;left:50%}.land-orb-ring--1{--start:-35deg;border:1px solid #7a8f631f;width:400px;height:145px;animation:13s linear infinite orb-spin}.land-orb-ring--2{--start:20deg;border:1px solid #7a8f6314;width:600px;height:215px;animation:21s linear infinite reverse orb-spin}.land-orb-ring--3{--start:-10deg;border:1px solid #7a8f630d;width:820px;height:295px;animation:30s linear infinite orb-spin}@keyframes orb-spin{0%{transform:translate(-50%, -50%) rotate(var(--start,0deg))}to{transform:translate(-50%, -50%) rotate(calc(var(--start,0deg) + 360deg))}}.land-sym{left:var(--x);top:var(--y);font-family:var(--font-reading);color:var(--accent);opacity:.1;animation:sym-float var(--dur,9s) ease-in-out infinite;animation-delay:var(--d,0s);-webkit-user-select:none;user-select:none;white-space:nowrap;font-size:clamp(1.1rem,2vw,1.7rem);font-style:italic;position:absolute}@keyframes sym-float{0%,to{opacity:.07;transform:translateY(0)rotate(-3deg)}50%{opacity:.16;transform:translateY(-18px)rotate(4deg)}}.land-hero-inner{z-index:1;text-align:center;max-width:880px;transform:perspective(1400px) rotateX(var(--hx,0deg)) rotateY(var(--hy,0deg));margin:0 auto;transition:transform .7s cubic-bezier(.16,1,.3,1);position:relative}.land-hero-inner>*{opacity:0;transition:transform .65s cubic-bezier(.16,1,.3,1),opacity .65s;transform:translateY(28px)}.land-hero.land-fade--visible .land-hero-inner>:first-child{opacity:1;transition-delay:.18s;transform:none}.land-hero.land-fade--visible .land-hero-inner>:nth-child(2){opacity:1;transition-delay:.32s;transform:none}.land-hero.land-fade--visible .land-hero-inner>:nth-child(3){opacity:1;transition-delay:.45s;transform:none}.land-hero.land-fade--visible .land-hero-inner>:nth-child(4){opacity:1;transition-delay:.56s;transform:none}.land-hero-h1{font-family:var(--font-reading);letter-spacing:-.02em;color:var(--text-hi);margin-bottom:1.5rem;font-size:clamp(2.6rem,7vw,5rem);font-style:italic;font-weight:400;line-height:1.08}.land-hero-h1 em{color:var(--accent);font-style:normal}.land-hero-sub{font-family:var(--font-ui);color:var(--text-secondary);max-width:560px;margin:0 auto 2.5rem;font-size:clamp(1rem,2.5vw,1.18rem);line-height:1.72}.land-hero-ctas{flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:1.4rem;display:flex}.land-hero-note{color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase;font-size:.75rem;font-weight:500}.land-problem{background:var(--bg-surface);text-align:center;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:clamp(4rem,9vw,7.5rem) clamp(1rem,5vw,2rem)}.land-cards{text-align:left;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:1.25rem;max-width:1020px;margin:0 auto;display:grid}.land-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;padding:2rem 1.75rem;position:relative}.land-card:after{content:"";background:linear-gradient(90deg, transparent 10%, var(--accent) 50%, transparent 90%);opacity:0;z-index:6;border-radius:16px 16px 0 0;height:2px;transition:opacity .3s;position:absolute;top:0;left:0;right:0}.land-card:hover{border-color:var(--accent-border)}.land-card:hover:after{opacity:1}.land-card-icon{margin-bottom:.9rem;font-size:1.6rem;line-height:1;display:block}.land-card-title{color:var(--text-hi);letter-spacing:-.01em;margin-bottom:.6rem;font-size:1.05rem;font-weight:700}.land-card-desc{color:var(--text-secondary);font-size:.875rem;line-height:1.72}.land-how{text-align:center;padding:clamp(4rem,9vw,7.5rem) clamp(1rem,5vw,2rem)}.land-how-inner{max-width:1020px;margin:0 auto}.land-steps{flex-wrap:wrap;justify-content:center;align-items:flex-start;display:flex;position:relative}.land-steps:before{content:"";background:repeating-linear-gradient(90deg, var(--accent-border) 0, var(--accent-border) 6px, transparent 6px, transparent 14px);pointer-events:none;height:1px;position:absolute;top:2.2rem;left:16%;right:16%}.land-step{text-align:center;z-index:1;flex:1;min-width:220px;max-width:290px;padding:0 1.5rem;position:relative}.land-step:before{content:attr(data-step);font-family:var(--font-reading);color:var(--accent);opacity:.05;pointer-events:none;-webkit-user-select:none;user-select:none;z-index:0;font-size:8rem;font-style:italic;font-weight:400;line-height:1;position:absolute;top:-.75rem;left:50%;transform:translate(-50%)}.land-step-icon{background:var(--bg-elevated);border:1px solid var(--border);z-index:1;border-radius:50%;justify-content:center;align-items:center;width:3.25rem;height:3.25rem;margin:0 auto .85rem;font-size:1.5rem;transition:border-color .2s,background .2s,transform .3s cubic-bezier(.34,1.56,.64,1);display:flex;position:relative}.land-step:hover .land-step-icon{border-color:var(--accent-border);background:var(--accent-soft);transform:scale(1.12)translateY(-3px)}.land-step-num{color:var(--accent);text-transform:uppercase;letter-spacing:.1em;z-index:1;margin-bottom:.5rem;font-size:.68rem;font-weight:700;position:relative}.land-step-title{color:var(--text-hi);letter-spacing:-.01em;z-index:1;margin-bottom:.55rem;font-size:1.05rem;font-weight:700;position:relative}.land-step-desc{color:var(--text-secondary);z-index:1;font-size:.875rem;line-height:1.72;position:relative}.land-step-arrow{color:var(--accent);opacity:.35;pointer-events:none;font-size:1.2rem;position:absolute;top:1rem;right:-.4rem}.land-features{background:var(--bg-surface);text-align:center;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:clamp(4rem,9vw,7.5rem) clamp(1rem,5vw,2rem)}.land-feat-grid{text-align:left;grid-template-columns:repeat(3,1fr);gap:1.25rem;max-width:940px;margin:0 auto;display:grid}.land-feat--hero{background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;grid-column:1/-1;padding:2.25rem 2rem;transition:border-color .2s;position:relative;overflow:hidden}.land-feat--hero:before{content:"";background:linear-gradient(90deg, transparent 5%, var(--accent) 50%, transparent 95%);opacity:0;border-radius:16px 16px 0 0;height:2px;transition:opacity .3s;position:absolute;top:0;left:0;right:0}.land-feat--hero .land-feat-icon{opacity:.08;z-index:0;pointer-events:none;margin:0;font-size:6rem;transition:opacity .3s,transform .4s cubic-bezier(.16,1,.3,1);position:absolute;top:50%;right:2rem;transform:translateY(-50%)}.land-feat--hero:hover{border-color:var(--accent-border)}.land-feat--hero:hover:before{opacity:1}.land-feat--hero:hover .land-feat-icon{opacity:.14;transform:translateY(-52%)scale(1.06)rotate(4deg)}.land-feat--hero .land-feat-title{z-index:1;margin-bottom:.6rem;font-size:1.3rem;position:relative}.land-feat--hero .land-feat-desc{z-index:1;max-width:70%;font-size:.92rem;line-height:1.72;position:relative}.land-feat{background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;padding:1.75rem 1.5rem;position:relative}.land-feat:after{content:"";background:linear-gradient(90deg, transparent 10%, var(--accent) 50%, transparent 90%);opacity:0;z-index:6;border-radius:16px 16px 0 0;height:2px;transition:opacity .3s;position:absolute;top:0;left:0;right:0}.land-feat:hover{border-color:var(--accent-border)}.land-feat:hover:after{opacity:1}.land-feat-icon{margin-bottom:.85rem;font-size:1.6rem;line-height:1;display:block}.land-feat-title{color:var(--text-hi);letter-spacing:-.01em;margin-bottom:.5rem;font-size:1rem;font-weight:700}.land-feat-desc{color:var(--text-secondary);font-size:.875rem;line-height:1.72}.land-pricing{text-align:center;padding:clamp(4rem,9vw,7.5rem) clamp(1rem,5vw,2rem)}.land-pricing-cards{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:1.25rem;max-width:1020px;margin:0 auto;display:flex}.land-price-card{background:var(--bg-surface);border:1px solid var(--border);text-align:left;border-radius:18px;flex-direction:column;flex:1;gap:.4rem;min-width:255px;max-width:308px;padding:2rem 1.6rem;transition:border-color .2s,transform .2s,box-shadow .2s;display:flex;position:relative}.land-price-card:not(.land-price-card--popular):hover{border-color:var(--border-hover);transform:translateY(-3px)}.land-price-card--popular{border-color:var(--accent-border);z-index:2;animation:3.5s ease-in-out infinite pro-glow-pulse;transform:scale(1.035)translateY(-5px)}@keyframes pro-glow-pulse{0%,to{box-shadow:0 0 0 1px var(--accent-border), 0 24px 64px #7a8f6321, 0 6px 20px #00000059}50%{box-shadow:0 0 0 1px #7a8f638c,0 28px 80px #7a8f633d,0 6px 20px #00000059}}.land-price-card--popular:hover{transform:scale(1.035)translateY(-8px)}.land-popular-badge{background:var(--accent);color:var(--on-accent);letter-spacing:.1em;white-space:nowrap;border-radius:20px;padding:.25rem 1rem;font-size:.63rem;font-weight:700;position:absolute;top:-13px;left:50%;transform:translate(-50%)}.land-price-label{letter-spacing:.12em;color:var(--text-muted);text-transform:uppercase;font-size:.7rem;font-weight:700;font-family:var(--font-ui)}.land-price-amount{font-family:var(--font-reading);letter-spacing:-.03em;color:var(--text-hi);margin-top:.35rem;font-size:3.1rem;font-weight:400;line-height:1}.land-price-period{color:var(--text-muted);margin-bottom:.85rem;font-size:.78rem}.land-price-features{flex:1;margin-bottom:1.5rem;list-style:none}.land-price-features li{color:var(--text-secondary);align-items:flex-start;gap:.55rem;padding:.3rem 0;font-size:.875rem;display:flex}.land-check{color:var(--accent);flex-shrink:0;margin-top:1px;font-weight:700}.land-price-card .land-btn-gold,.land-price-card .land-btn-outline{justify-content:center;width:100%;margin-top:auto}.land-finalcta{background:linear-gradient(160deg, #0e1209 0%, var(--bg-base) 55%);border-top:1px solid var(--border);text-align:center;padding:clamp(5rem,12vw,9rem) clamp(1rem,5vw,2rem);position:relative;overflow:hidden}.land-finalcta:before{content:"";background-image:radial-gradient(circle, var(--accent-border) 1px, transparent 1px);pointer-events:none;background-size:40px 40px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(75% 75%,#000 20%,#0000 72%);mask-image:radial-gradient(75% 75%,#000 20%,#0000 72%)}.land-finalcta-h2{font-family:var(--font-reading);letter-spacing:-.02em;color:var(--text-hi);z-index:1;margin-bottom:1rem;font-size:clamp(2.1rem,5.5vw,3.6rem);font-style:italic;font-weight:400;position:relative}.land-finalcta-sub{color:var(--text-secondary);z-index:1;max-width:440px;margin-bottom:2.5rem;margin-left:auto;margin-right:auto;font-size:1.05rem;line-height:1.72;position:relative}.land-finalcta .land-btn-gold,.land-finalcta .land-btn-xl{z-index:1;position:relative}.land-finalcta-note{color:var(--text-muted);letter-spacing:.05em;text-transform:uppercase;z-index:1;margin-top:1.25rem;font-size:.75rem;font-weight:500;position:relative}.land-footer{background:var(--bg-surface);border-top:1px solid var(--border);padding:2.5rem clamp(1rem,5vw,3rem)}.land-footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:2rem;max-width:1100px;margin:0 auto;display:flex}.land-footer-brand{flex-direction:column;gap:.4rem;display:flex}.land-footer-tagline{color:var(--text-muted);font-size:.8rem;line-height:1.5}.land-footer-links{flex-wrap:wrap;align-items:center;gap:1.5rem;display:flex}.land-footer-links button,.land-footer-links a{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;padding:0;font-family:inherit;font-size:.875rem;text-decoration:none;transition:color .15s}.land-footer-links button:hover,.land-footer-links a:hover{color:var(--text-primary)}.land-footer-copy{color:var(--text-muted);font-size:.78rem}@media (width<=860px){.land-feat-grid{grid-template-columns:repeat(2,1fr)}.land-orb-ring--3{display:none}}@media (width<=640px){.land-feat-grid{grid-template-columns:1fr}.land-feat--hero .land-feat-desc{max-width:100%}.land-feat--hero .land-feat-icon{font-size:3.5rem;right:1rem}.land-steps:before,.land-step-arrow{display:none}.land-steps{flex-direction:column;align-items:center;gap:2rem}.land-step{max-width:100%;padding:0 .5rem}.land-price-card--popular{box-shadow:0 0 0 1px var(--accent-border);animation:none;transform:none}.land-footer-inner{text-align:center;flex-direction:column}.land-footer-links{justify-content:center}.land-footer-copy{order:3}.land-hero-ctas{flex-direction:column;align-items:center}.land-nav-cta .land-btn-outline,.land-orb-ring--2{display:none}.land-hero-h1{font-size:clamp(2rem,8vw,2.6rem)}.land-section-h2{font-size:clamp(1.5rem,6vw,1.9rem)}.land-cards{grid-template-columns:1fr}.land-pricing-cards{flex-direction:column;align-items:stretch}.land-price-card{min-width:0;max-width:100%}.land-btn-lg{padding:.7rem 1.75rem;font-size:.95rem}.land-btn-xl{padding:.85rem 2rem;font-size:1rem}.land-hero{padding-top:clamp(4rem,10vw,5.5rem);padding-bottom:clamp(3rem,8vw,4.5rem)}.land-finalcta-h2{font-size:clamp(1.7rem,7vw,2.1rem)}.land-footer{padding-bottom:calc(1.5rem + env(safe-area-inset-bottom,0px))}[data-tilt]{transform:none!important}.land-tilt-glare{display:none}}@media (prefers-reduced-motion:reduce){.land-orb-ring,.land-sym,.land-btn-gold:after{animation:none!important}.land-hero-glow,.land-hero-inner,[data-tilt]{transition:none!important;transform:none!important}}.auth-screen{background:radial-gradient(1200px 600px at 50% -10%,#1a1a1a 0%,#0e0e0e 60%,#0a0a0a 100%);justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.auth-box{background:#161616;border:1px solid #262626;border-radius:16px;width:100%;max-width:380px;padding:32px 28px;box-shadow:0 24px 60px #00000080}.auth-logo{justify-content:center;align-items:center;gap:8px;display:flex}.auth-logo-icon{color:var(--accent);font-size:22px}.auth-logo-name{letter-spacing:.18em;color:#f0f0f0;font-size:18px;font-weight:700}.auth-tagline{text-align:center;color:#777;margin:6px 0 26px;font-size:12.5px}.auth-title{color:#f0f0f0;text-align:center;margin:0 0 22px;font-size:19px;font-weight:600}.auth-form{flex-direction:column;gap:16px;display:flex}.auth-label{color:#999;flex-direction:column;gap:7px;font-size:12px;display:flex}.auth-input{color:#f0f0f0;background:#0f0f0f;border:1px solid #2a2a2a;border-radius:9px;outline:none;padding:11px 12px;font-size:14px;transition:border-color .15s}.auth-input:focus{border-color:var(--accent)}.auth-error{color:#ff6b6b;background:#ff505014;border:1px solid #ff505033;border-radius:8px;padding:9px 11px;font-size:12.5px}.auth-notice{color:#6bd49a;background:#50dc8c14;border:1px solid #50dc8c33;border-radius:8px;padding:9px 11px;font-size:12.5px}.auth-submit{background:var(--accent);color:var(--on-accent);cursor:pointer;border:none;border-radius:9px;margin-top:4px;padding:12px;font-size:14px;font-weight:600;transition:opacity .15s,filter .15s}.auth-submit:hover:not(:disabled){filter:brightness(1.05)}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-switch{text-align:center;color:#888;margin:22px 0 0;font-size:13px}.auth-switch-btn{color:var(--accent);cursor:pointer;background:0 0;border:none;margin-left:6px;padding:0;font-size:13px;font-weight:600}.auth-switch-btn:hover{text-decoration:underline}.math-block{text-align:center;margin:.75em 0;display:block;overflow-x:auto}.math-inline{display:inline}.message-content p{margin:0 0 14px;font-size:16px}.message-content p:first-child{margin-top:0}.message-content p:last-child{margin-bottom:0}.message-content h1,.message-content h2,.message-content h3{margin:.75em 0 .35em;font-weight:700;line-height:1.3}.message-content h1{font-size:22px}.message-content h2{font-size:19px}.message-content h3{font-size:17px}.message-content ul,.message-content ol{margin:.5em 0;padding-left:1.4em}.message-content li{margin-bottom:6px;font-size:16px}.message-content pre{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;margin:14px 0;padding:16px;overflow-x:auto}.message-content code{font-family:var(--font-mono);color:var(--text-hi);background:var(--accent-soft);border-radius:4px;padding:2px 6px;font-size:13px}.message-content pre code{color:var(--text-primary);background:0 0;border:none;border-radius:0;padding:0}.message-content blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:.5em 0;padding:.3em .8em;font-size:15px;line-height:1.75}.message-content strong{font-size:16px;font-weight:600}.message-content .katex-display{margin:.75em 0;overflow-x:auto}.math-fallback{background:var(--bg-elevated);border:1px solid var(--accent-border);font-family:var(--font-mono);color:var(--text-hi);border-radius:4px;margin:8px 0;padding:8px 12px;display:block;overflow-x:auto}.app{width:100%;height:100dvh;display:flex;overflow:hidden}.sidebar{--sidebar-w:264px;width:var(--sidebar-w);background:var(--sidebar-bg);border-right:1px solid var(--border);z-index:40;flex-direction:column;flex-shrink:0;gap:16px;padding:16px 12px 14px;display:flex}.sidebar-header{position:relative}.brand{align-items:center;gap:9px;padding:6px 8px;display:flex}.brand-icon{background:var(--accent-soft);width:28px;height:28px;color:var(--accent);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.brand-name{letter-spacing:.01em;color:var(--text-primary);font-size:15px;font-weight:700}.new-chat-btn{background:var(--accent);width:100%;color:var(--on-accent);font-size:14px;font-weight:600;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 12px;transition:background .16s,transform .1s;display:flex}.new-chat-btn:hover{background:var(--accent-hi)}.new-chat-btn:active{transform:translateY(1px)}.nav-group{flex-direction:column;gap:2px;display:flex}.nav-section-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:6px;padding:0 12px;font-size:11px}.nav-item{width:100%;color:var(--text-secondary);font-size:14px;font-family:var(--font-ui);text-align:left;cursor:pointer;background:0 0;border:none;border-radius:6px;align-items:center;gap:10px;padding:10px 12px;font-weight:500;transition:background .14s,color .14s;display:flex;position:relative}.nav-item .nav-icon{color:var(--text-secondary);flex-shrink:0;transition:color .14s}.nav-item:hover{background:var(--bg-elevated);color:var(--text-primary)}.nav-item:hover .nav-icon{color:var(--text-primary)}.nav-item--active{background:var(--accent-soft);color:var(--accent)}.nav-item--active .nav-icon{color:var(--accent)}.nav-item--active:before{content:"";background:var(--accent);border-radius:0 3px 3px 0;width:3px;height:18px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.recent-group{flex:1;min-height:0}.recent-list{flex-direction:column;flex:1;gap:2px;min-height:0;margin:0 -4px;padding:0 4px;display:flex;overflow-y:auto}.recent-list::-webkit-scrollbar{width:6px}.recent-list::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:3px}.recent-list::-webkit-scrollbar-track{background:0 0}.history-item{color:var(--text-secondary);cursor:pointer;border-radius:6px;align-items:center;gap:6px;padding:9px 8px 9px 12px;font-size:13.5px;transition:background .14s,color .14s;display:flex}.history-item-title{white-space:nowrap;text-overflow:ellipsis;flex:1;overflow:hidden}.history-item:hover{background:var(--bg-elevated);color:var(--text-primary)}.history-item--active{background:var(--accent-soft);color:var(--accent)}.history-delete-btn{width:24px;height:24px;color:var(--text-muted);cursor:pointer;opacity:0;background:0 0;border:none;border-radius:5px;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:opacity .14s,background .14s,color .14s;display:inline-flex}.history-item:hover .history-delete-btn{opacity:1}.history-delete-btn:hover{background:var(--danger-soft);color:var(--danger)}.history-empty{color:var(--text-muted);padding:4px 12px;font-size:12.5px;font-style:italic}.account-zone{position:relative}.account-trigger{border:1px solid var(--border);cursor:pointer;width:100%;font-family:var(--font-ui);background:0 0;border-radius:10px;align-items:center;gap:10px;padding:8px 10px;transition:background .15s,border-color .15s;display:flex}.account-trigger:hover,.account-trigger--open{background:var(--bg-elevated);border-color:var(--border-hover)}.account-avatar{background:var(--accent);width:34px;height:34px;color:var(--on-accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:14px;font-weight:700;display:flex}.account-meta{text-align:left;flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.account-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.plan-badge{letter-spacing:.03em;border-radius:20px;align-self:flex-start;padding:1px 7px;font-size:10px;font-weight:600;line-height:1.5}.plan-badge--free{background:var(--border);color:var(--text-secondary)}.plan-badge--pro{background:var(--accent-soft);color:var(--accent)}.plan-badge--proplus{background:var(--accent-soft);color:var(--accent-hi)}.account-chevron{color:var(--text-muted);flex-shrink:0}.account-menu{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border);z-index:60;transform-origin:bottom;border-radius:12px;flex-direction:column;gap:1px;padding:6px;animation:.18s cubic-bezier(.16,1,.3,1) menu-up;display:flex;position:absolute;bottom:calc(100% + 8px);left:0;right:0;box-shadow:0 16px 40px #0000008c}@keyframes menu-up{0%{opacity:0;transform:translateY(8px)scale(.97)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes menu-pop{0%{opacity:0;transform:translateY(-6px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.account-menu-item{width:100%;color:var(--text-secondary);font-size:13px;font-family:var(--font-ui);text-align:left;cursor:pointer;background:0 0;border:none;border-radius:8px;align-items:center;gap:11px;padding:9px 10px;transition:background .13s,color .13s;display:flex}.account-menu-item svg{color:var(--text-secondary);flex-shrink:0;transition:color .13s}.account-menu-item>span:first-of-type{flex:1}.account-menu-item:hover{background:var(--bg-elevated);color:var(--text-primary)}.account-menu-item:hover svg{color:var(--text-primary)}.account-menu-item--static{cursor:default}.account-menu-item--static:hover{color:var(--text-secondary);background:0 0}.account-menu-item--static:hover svg{color:var(--text-secondary)}.account-menu-item--danger,.account-menu-item--danger svg{color:var(--danger)}.account-menu-item--danger:hover{color:#ff6b6b;background:#ff50501f}.account-menu-item--danger:hover svg{color:#ff6b6b}.account-menu-value{color:var(--text-muted);font-size:12px}.account-menu-divider{background:var(--border-hover);height:1px;margin:5px 6px}.kbd{font-family:var(--font-ui);color:var(--text-secondary);background:var(--bg-elevated);border:1px solid var(--border-hover);border-radius:5px;padding:1px 6px;font-size:11px;line-height:1.6}.sidebar-backdrop{-webkit-backdrop-filter:blur(2px);z-index:38;background:#0000008c;animation:.18s fade-in;position:fixed;inset:0}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.sidebar-toggle{border:1px solid var(--border);width:34px;height:34px;color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:8px;justify-content:center;align-items:center;transition:background .14s,color .14s;display:none;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.sidebar-toggle:hover{background:var(--bg-elevated);color:var(--text-primary)}.sidebar :focus-visible,.sidebar-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}@media (width<=880px){.sidebar{transition:transform .24s cubic-bezier(.16,1,.3,1);position:fixed;top:0;bottom:0;left:0;transform:translate(-100%);box-shadow:0 0 44px #0009}.sidebar--open{transform:translate(0)}.sidebar-toggle{display:inline-flex}}.auth-loading{background:var(--bg-base);color:var(--text-muted);justify-content:center;align-items:center;font-size:14px;display:flex;position:fixed;inset:0}.main{background:0 0;flex-direction:column;flex:1;min-width:0;display:flex;position:relative;overflow:hidden}.main:after{content:"";background:linear-gradient(to bottom, transparent, var(--bg-base));pointer-events:none;z-index:9;height:160px;position:fixed;bottom:0;left:264px;right:0}.topbar{background:var(--bg-surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:center;align-items:center;height:52px;display:flex;position:relative;overflow:hidden}.topbar--streaming:after{content:"";background:linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);height:2px;animation:1.6s ease-in-out infinite topbarSweep;position:absolute;bottom:0;left:0;right:0}@keyframes topbarSweep{0%{transform:translate(-100%)}to{transform:translate(200%)}}.topbar-title{color:var(--text-secondary);font-size:14px;font-weight:600;font-family:var(--font-ui);letter-spacing:.02em}.chat-area{scroll-behavior:smooth;flex-direction:column;flex:1;gap:0;padding:32px 24px 140px;display:flex;overflow-y:auto}.chat-area::-webkit-scrollbar{width:4px}.chat-area::-webkit-scrollbar-track{background:0 0}.chat-area::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:2px}.empty-state{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:16px;padding:40px 20px;display:flex}.welcome-greeting{font-family:var(--font-ui);color:var(--text-primary);letter-spacing:-.01em;margin:0;font-size:42px;font-weight:800}.welcome-question{color:var(--text-secondary);margin:0 0 8px;font-size:16px}.cards{align-items:stretch;gap:12px;width:100%;max-width:660px;display:flex}.card{background:var(--bg-surface);border:1px solid var(--border);text-align:left;cursor:pointer;font-family:var(--font-ui);border-radius:10px;flex-direction:column;flex:1;gap:7px;padding:22px 18px;transition:border-color .18s,background .18s,transform .18s;display:flex}.card:hover{border-color:var(--accent);background:var(--bg-elevated);transform:translateY(-3px)}.card-icon{font-size:28px;font-family:var(--font-ui);color:var(--accent);margin-bottom:6px;font-weight:400;line-height:1}.card-title{color:var(--text-primary);font-size:13px;font-weight:600;line-height:1.3}.card-sub{color:var(--text-muted);font-size:11.5px;line-height:1.45}.message-block{width:100%;max-width:720px;margin:0 auto;padding:28px 0;animation:.22s ease-out fadeSlideIn}.message-block:last-child{border-bottom:none}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-sender{font-family:var(--font-ui);letter-spacing:.05em;text-transform:uppercase;margin-bottom:6px;font-size:12px;font-weight:600}.message-sender--ai{color:var(--accent)}.message-sender--user{color:var(--text-secondary)}.ai-message{align-items:flex-start;gap:16px;display:flex}.ai-avatar{background:var(--accent-soft);border:1px solid var(--accent-border);width:32px;height:32px;color:var(--accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;display:flex}.ai-message-content{min-width:0;font-family:var(--font-reading);color:var(--text-hi);letter-spacing:.01em;word-wrap:break-word;flex:1;padding-top:4px;font-size:16px;line-height:1.85}.ai-text p{margin:0 0 14px;font-size:16px;line-height:1.85}.ai-text p:last-child{margin-bottom:0}.ai-text ul,.ai-text ol{margin:12px 0;padding-left:24px}.ai-text li{margin-bottom:8px;font-size:16px;line-height:1.7}.ai-text li:last-child{margin-bottom:0}.ai-text strong{color:var(--text-primary);font-size:16px;font-weight:600}.ai-text strong.step-label{color:var(--accent)}.ai-text em{color:var(--text-secondary)}.ai-text h1,.ai-text h2,.ai-text h3,.ai-text h4{color:var(--text-primary);font-family:var(--font-reading);margin:16px 0 8px;font-weight:700;line-height:1.3}.ai-text h1{font-size:22px}.ai-text h2{font-size:19px;font-weight:700}.ai-text h3{color:var(--accent);font-size:17px;font-weight:600}.ai-text blockquote{border-left:3px solid var(--accent);background:var(--accent-soft-2);color:var(--text-secondary);border-radius:0 6px 6px 0;margin:18px 0;padding:12px 18px;font-size:15px;font-style:italic;line-height:1.75}.ai-text hr{border:none;border-top:1px solid var(--border);margin:20px 0}.inline-code{font-family:var(--font-mono);background:var(--accent-soft);color:var(--text-hi);border-radius:4px;padding:1px 6px;font-size:13.5px}.code-block{border:1px solid var(--hairline);border-radius:8px;margin:14px 0;overflow:hidden}.code-block-header{background:var(--hairline);justify-content:space-between;align-items:center;padding:6px 14px;display:flex}.code-block-label{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-low);font-size:10px;font-weight:600}.code-block-copy{cursor:pointer;color:var(--text-mid);font-size:12px;font-family:var(--font-ui);transition:color var(--dur-fast) var(--ease-out);background:0 0;border:none;border-radius:4px;padding:2px 8px}.code-block-copy:hover{color:var(--text-hi)}.code-block pre{background:var(--raised);font-family:var(--font-mono);color:var(--text-hi);white-space:pre;border:none;border-radius:0;margin:0;padding:14px 16px;font-size:13px;line-height:1.6;overflow-x:auto}.message-actions{opacity:0;gap:6px;margin-top:4px;transition:opacity .2s;display:flex}.message-block:hover .message-actions{opacity:1}.action-btn{color:var(--text-muted);font-size:11px;font-family:var(--font-ui);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;transition:color .15s,background .15s}.action-btn:hover:not(:disabled){color:var(--text-primary);background:var(--bg-elevated)}.action-btn:disabled{opacity:.4;cursor:default}.action-btn--active{border-color:var(--accent);color:var(--accent)}.verify-row{margin-top:12px}.verify-btn{background:var(--accent-soft);border:1px solid var(--verify-border);color:var(--text-mid);font-size:12px;font-family:var(--font-ui);cursor:pointer;border-radius:6px;padding:6px 12px;transition:background .15s,border-color .15s,color .15s}.verify-btn:hover:not(:disabled){background:var(--accent-soft);border-color:var(--accent);color:var(--text-hi)}.verify-btn:disabled{opacity:.6;cursor:default}.model-label{font-family:var(--font-mono);color:var(--text-low);-webkit-user-select:none;user-select:none;margin-left:auto;font-size:10px}.opus-answered-label{font-family:var(--font-ui);color:var(--text-low);font-size:11px}.verify-panel{background:var(--accent-soft-2);border:1px solid var(--verify-border);border-left:3px solid var(--accent);border-radius:0 10px 10px 0;margin-top:14px;padding:14px 16px;animation:.22s ease-out fadeSlideIn}.verify-label{font-family:var(--font-ui);letter-spacing:.08em;color:var(--text-mid);margin-bottom:8px;font-size:11px;font-weight:700}.verify-loading{font-family:var(--font-ui);color:var(--text-mid);font-size:13.5px}.verify-verdict{font-family:var(--font-ui);border-radius:6px;margin-top:12px;padding:8px 12px;font-size:13px;font-weight:600}.verify-verdict--match{color:var(--verify-agree);background:var(--success-soft);border:1px solid #4a8f5a59}.verify-verdict--differ{color:var(--verify-differ);background:var(--warning-soft);border:1px solid #c77b4959}.verify-error{font-family:var(--font-ui);color:var(--danger);font-size:13px}.user-message{flex-direction:row-reverse;align-items:flex-start;gap:10px;display:flex}.user-message .message-sender{text-align:right;letter-spacing:.03em;opacity:.55;margin-bottom:2px;font-size:11px}.user-avatar{background:var(--accent);width:26px;height:26px;color:var(--on-accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;font-size:11px;font-weight:700;display:flex}.user-message-content{min-width:0;max-width:75%;font-family:var(--font-ui);color:var(--text-primary);text-align:left;background:0 0;border:none;border-radius:0;flex:0 auto;margin-left:auto;padding:0;font-size:15px;line-height:1.65}.user-text{white-space:pre-wrap;word-wrap:break-word}.edit-wrap{border:1px solid var(--accent);background:var(--input-bg);border-radius:10px;padding:10px 14px}.edit-textarea{width:100%;font-family:var(--font-ui);color:var(--text-primary);resize:none;white-space:pre-wrap;word-wrap:break-word;background:0 0;border:none;outline:none;min-height:24px;font-size:15px;line-height:1.6}.edit-actions{justify-content:flex-end;gap:8px;margin-top:10px;display:flex}.edit-save-btn{background:var(--accent);color:var(--on-accent);cursor:pointer;border:none;border-radius:6px;padding:6px 12px;font-size:13px;font-weight:600}.edit-save-btn:hover{background:var(--accent-press)}.edit-cancel-btn{border:1px solid var(--text-muted);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:6px;padding:6px 12px;font-size:13px}.edit-cancel-btn:hover{border-color:var(--text-muted);color:var(--text-secondary)}.user-quote{border-left:2px solid var(--accent);background:var(--accent-soft-2);color:var(--text-secondary);border-radius:0 6px 6px 0;margin-bottom:9px;padding:5px 10px;font-size:13px;font-style:italic;line-height:1.55}.user-question{line-height:1.65}.typing-dots{gap:4px;padding-top:8px;display:flex}.typing-dot{background:var(--accent);width:6px;height:6px;animation:thinkingPulse var(--dur-slow) var(--ease-in-out) infinite alternate;border-radius:50%}.typing-dot:nth-child(2){animation-delay:calc(var(--dur-slow) / 3)}.typing-dot:nth-child(3){animation-delay:calc(var(--dur-slow) / 3 * 2)}@keyframes thinkingPulse{0%{opacity:.3;transform:scale(.85)}to{opacity:1;transform:scale(1.05)}}@keyframes inputSlideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.input-wrapper{z-index:10;flex-direction:column;align-items:center;gap:8px;padding:0 20px;animation:.6s cubic-bezier(.16,1,.3,1) .3s both inputSlideUp;display:flex;position:fixed;bottom:32px;left:264px;right:0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.img-preview-bar{box-sizing:border-box;background:var(--input-bg);border:1px solid var(--border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:12px;align-items:center;gap:12px;width:100%;max-width:700px;max-height:100px;padding:8px 16px;animation:.2s fadeInUp;display:flex}.img-thumb{flex-shrink:0;line-height:0;position:relative}.img-preview{object-fit:cover;border:1px solid var(--text-muted);border-radius:8px;width:auto;max-width:140px;height:80px;display:block}.img-thumb-spinner{border:1px solid var(--text-muted);background:var(--input-bg);border-radius:8px;justify-content:center;align-items:center;width:80px;height:80px;display:flex}.img-spinner{border:2.5px solid var(--text-muted);border-top-color:var(--accent);border-radius:50%;width:22px;height:22px;animation:.7s linear infinite imgSpin}@keyframes imgSpin{to{transform:rotate(360deg)}}.img-filename{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;max-width:150px;font-size:12px;overflow:hidden}.img-remove-btn{width:18px;height:18px;color:var(--text-primary);cursor:pointer;background:#f44;border:none;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:13px;line-height:1;display:flex;position:absolute;top:-6px;right:-6px}.img-remove-btn:hover{background:#ff5e5e}.img-error{color:#ff6b6b;font-size:12.5px;font-family:var(--font-ui);animation:.2s fadeInUp}.user-img-grid{flex-wrap:wrap;gap:8px;margin-bottom:8px;display:flex}.user-img-preview{border-radius:8px;max-width:100%;max-height:200px;display:block}.user-img-grid .user-img-preview{object-fit:cover;max-width:180px;max-height:140px}.image-preview-row{box-sizing:border-box;background:var(--input-bg);border:1px solid var(--border);border-radius:12px;align-items:center;gap:8px;width:100%;max-width:720px;padding:8px 16px;animation:.2s fadeInUp;display:flex;overflow-x:auto}.image-thumb{border:1px solid var(--text-muted);border-radius:8px;flex-shrink:0;width:72px;height:72px;position:relative;overflow:hidden}.image-thumb img{object-fit:cover;width:100%;height:100%}.image-thumb--loading{background:var(--input-bg);justify-content:center;align-items:center;display:flex}.image-thumb .remove-btn{width:18px;height:18px;color:var(--text-primary);cursor:pointer;background:#000000b3;border:none;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:10px;line-height:1;display:flex;position:absolute;top:3px;right:3px}.image-thumb .remove-btn:hover{background:#f44}.image-count-pill{font-family:var(--font-ui);color:var(--text-secondary);background:var(--bg-surface);border:1px solid var(--text-muted);white-space:nowrap;border-radius:20px;flex-shrink:0;padding:4px 12px;font-size:12px}.image-limit-text{font-family:var(--font-ui);color:var(--text-secondary);white-space:nowrap;font-size:12px}.image-limit-text--max{color:var(--warning)}.input-box{background:var(--input-bg);border:1px solid var(--border);border-radius:16px;flex-direction:column;gap:8px;width:100%;max-width:720px;padding:12px 16px;transition:border-color .25s,box-shadow .25s;display:flex;position:relative;box-shadow:0 4px 24px #0000004d}.input-box:focus-within{border-color:var(--accent);box-shadow:0 4px 24px #0000004d}.input-box--dragover{border:2px dashed var(--accent);background:var(--accent-soft-2)}.drop-overlay{background:var(--accent-soft-2);color:var(--accent);font-size:14px;font-weight:600;font-family:var(--font-ui);pointer-events:none;z-index:2;border-radius:14px;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.input{width:100%;color:var(--text-primary);font-size:15px;font-family:var(--font-ui);resize:none;background:0 0;border:none;outline:none;min-height:24px;max-height:200px;padding:0;line-height:1.6;overflow-y:auto}.input::placeholder{color:var(--text-low)}.input::-webkit-scrollbar{width:3px}.input::-webkit-scrollbar-thumb{background:var(--hairline);border-radius:2px}.send-btn{background:var(--text-muted);width:32px;height:32px;color:var(--on-accent);cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:15px;font-weight:700;transition:background .2s,transform .2s cubic-bezier(.16,1,.3,1);display:flex}.send-btn:disabled{cursor:default}.send-btn--active{background:var(--accent)}.send-btn--active:hover{background:var(--accent-hover);transform:scale(1.08)}.stop-btn{background:var(--border-hover);color:var(--text-primary);font-size:13px}.stop-btn:hover{background:var(--border-hover);transform:scale(1.08)}.input-bottom-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.input-bottom-left,.input-bottom-right{align-items:center;gap:8px;display:flex}.icon-btn{border:1px solid var(--text-muted);width:32px;height:32px;color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:color .15s,border-color .15s,background .15s;display:flex}.icon-btn:hover:not(:disabled){color:var(--text-primary);border-color:var(--text-muted)}.icon-btn:disabled{opacity:.35;cursor:not-allowed}.mic-btn--recording{color:var(--text-primary);border-color:var(--accent);background:var(--accent);animation:1.2s ease-in-out infinite micPulse}@keyframes micPulse{0%,to{box-shadow:0 0 #7a8f6380}50%{box-shadow:0 0 0 6px #7a8f6300}}.model-selector-wrap{position:relative}.model-selector{border:1px solid var(--hairline);font-size:12px;font-family:var(--font-ui);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:8px;align-items:center;gap:5px;padding:6px 10px;transition:border-color .15s,color .15s;display:flex}.model-selector--opus{color:var(--accent);border-color:var(--accent-border)}.model-selector:hover{border-color:var(--accent-border);color:var(--text-primary)}.model-menu{background:var(--bg-surface);border:1px solid var(--text-muted);z-index:20;border-radius:10px;min-width:180px;padding:6px;animation:.12s ease-out popupIn;position:absolute;bottom:calc(100% + 8px);right:0;box-shadow:0 8px 28px #00000080}.model-menu-item{width:100%;font-size:13px;font-family:var(--font-ui);color:var(--text-secondary);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:8px;padding:8px 10px;transition:background .12s;display:flex}.model-menu-item:hover{background:var(--bg-elevated)}.model-check{width:12px;color:var(--accent);flex-shrink:0;font-size:12px}.model-badge{letter-spacing:.03em;color:var(--accent);background:var(--accent-soft);border-radius:4px;margin-left:auto;padding:2px 6px;font-size:10px;font-weight:600}.input-img-row{display:flex}.input-img-thumb{flex-shrink:0;width:60px;height:60px;position:relative}.input-img-thumb-img{object-fit:cover;border:1px solid var(--text-muted);border-radius:8px;width:60px;height:60px;display:block}.input-img-spinner-wrap{border:1px solid var(--text-muted);background:var(--input-bg);border-radius:8px;justify-content:center;align-items:center;width:60px;height:60px;display:flex}.input-img-remove{width:18px;height:18px;color:var(--text-primary);cursor:pointer;background:#f44;border:none;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:13px;line-height:1;display:flex;position:absolute;top:-6px;right:-6px}.input-img-remove:hover{background:#ff5e5e}.input-disclaimer{color:var(--text-muted);font-size:11px;font-family:var(--font-ui);text-align:center}.credit-badge{text-align:center;width:100%;max-width:720px;font-size:11.5px;font-family:var(--font-ui);letter-spacing:.02em;color:var(--text-muted)}.credit-badge--low{color:var(--warning)}.credit-banner{background:var(--accent-soft-2);border:1px solid var(--accent-border);text-align:center;border-radius:12px;width:100%;max-width:720px;padding:12px 18px}.credit-banner-text{font-size:13px;font-family:var(--font-ui);color:var(--text-secondary);line-height:1.5}.credit-banner-link{font:inherit;color:var(--accent);cursor:pointer;white-space:nowrap;background:0 0;border:none;padding:0;font-weight:600}.credit-banner-link:hover{color:var(--accent-hover);text-decoration:underline}.selection-popup{background:var(--bg-elevated);border:1px solid var(--accent);z-index:1000;pointer-events:auto;border-radius:8px;padding:7px 14px;animation:.12s ease-out popupIn;position:fixed;transform:translate(-50%,calc(-100% - 10px));box-shadow:0 4px 20px #0000008c}@keyframes popupIn{0%{opacity:0;transform:translate(-50%,calc(-100% - 4px))}to{opacity:1;transform:translate(-50%,calc(-100% - 10px))}}.selection-popup button{color:var(--accent);font-size:12.5px;font-family:var(--font-ui);cursor:pointer;white-space:nowrap;letter-spacing:.01em;background:0 0;border:none;padding:0;font-weight:500}.selection-popup button:hover{color:var(--accent-hover)}.selection-popup:before{content:"";border:6px solid #0000;border-top-color:var(--accent);border-bottom:none;position:absolute;bottom:-7px;left:50%;transform:translate(-50%)}.selection-popup:after{content:"";border:5px solid #0000;border-top-color:var(--bg-elevated);border-bottom:none;position:absolute;bottom:-5px;left:50%;transform:translate(-50%)}.mistake-pill{background:var(--accent-soft-2);border:1px solid var(--accent-border);color:var(--text-secondary);font-size:11.5px;font-family:var(--font-ui);border-radius:20px;align-items:center;gap:5px;margin-top:10px;padding:4px 10px;animation:.3s ease-out fadeSlideIn;display:inline-flex}.incomplete-warning{color:var(--danger);margin-top:12px;font-size:13px}.mistake-pill strong{color:var(--accent);font-weight:600;font-family:var(--font-ui)}.dna-wrapper{flex:1;padding:40px 24px 60px;overflow-y:auto}.dna-wrapper::-webkit-scrollbar{width:4px}.dna-wrapper::-webkit-scrollbar-track{background:0 0}.dna-wrapper::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:2px}.dna-page{flex-direction:column;gap:28px;max-width:680px;margin:0 auto;display:flex}.dna-empty{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:80px 20px;display:flex}.dna-empty-icon{opacity:.3;font-size:40px;animation:2.5s ease-in-out infinite dnaEmptyPulse}@keyframes dnaEmptyPulse{0%,to{opacity:.2;transform:scale(1)}50%{opacity:.4;transform:scale(1.08)}}.dna-empty-title{font-family:var(--font-ui);color:var(--text-primary);font-size:22px;font-weight:700}.dna-empty-sub{color:var(--text-muted);max-width:340px;font-size:14px;line-height:1.7}.dna-header{flex-direction:column;gap:4px;display:flex}.dna-title{font-family:var(--font-ui);color:var(--text-primary);margin:0;font-size:28px;font-weight:700}.dna-analyzed{color:var(--text-muted);margin:0;font-size:13px}.dna-summary-card{background:var(--bg-surface);border:1px solid var(--accent-border);border-left:3px solid var(--accent);border-radius:10px;flex-direction:column;gap:8px;padding:24px 28px;display:flex}.dna-top-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:11px}.dna-top-error{font-family:var(--font-ui);color:var(--accent);letter-spacing:.02em;font-size:26px;font-weight:700}.dna-insight{color:var(--text-secondary);margin:0;font-size:14px;line-height:1.6}.dna-section{flex-direction:column;gap:14px;display:flex}.dna-section-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:11px;font-weight:600}.dna-bars{flex-direction:column;gap:10px;display:flex}.dna-bar-row{grid-template-columns:120px 1fr 40px;align-items:center;gap:12px;display:grid}.dna-bar-label{color:var(--text-secondary);white-space:nowrap;font-size:13px}.dna-bar-track{background:var(--border);border-radius:4px;height:8px;overflow:hidden}.dna-bar-fill{background:var(--accent);border-radius:4px;height:100%;transition:width .6s cubic-bezier(.16,1,.3,1)}.dna-bar-pct{color:var(--text-muted);text-align:right;font-size:12px}.dna-topics{flex-direction:column;gap:2px;display:flex}.dna-topic-row{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;justify-content:space-between;align-items:center;gap:16px;padding:14px 16px;transition:border-color .18s;display:flex}.dna-topic-row:hover{border-color:var(--border-hover)}.dna-topic-info{flex-direction:column;gap:3px;min-width:0;display:flex}.dna-topic-name{color:var(--text-primary);font-size:14px;font-weight:500}.dna-topic-meta{color:var(--text-muted);font-size:12px}.dna-practice-btn{border:1px solid var(--accent-border);font-size:12px;font-family:var(--font-ui);color:var(--accent);cursor:pointer;white-space:nowrap;background:0 0;border-radius:6px;flex-shrink:0;padding:6px 12px;transition:background .18s,border-color .18s}.dna-practice-btn:hover{background:var(--accent-soft);border-color:var(--accent)}.web-wrapper{flex-direction:column;flex:1;display:flex;overflow:hidden}.web-page{flex:1;height:100%;display:flex;overflow:hidden}.web-left{border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:30%;min-width:200px;max-width:260px;padding:16px 0 24px;display:flex;overflow-y:auto}.web-left::-webkit-scrollbar{width:3px}.web-left::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:2px}.web-search-wrap{padding:0 12px 14px}.web-search{background:var(--input-bg);border:1px solid var(--border);width:100%;color:var(--text-primary);font-size:13px;font-family:var(--font-ui);border-radius:8px;outline:none;padding:8px 12px;transition:border-color .18s}.web-search::placeholder{color:var(--text-muted)}.web-search:focus{border-color:var(--accent)}.web-group{margin-bottom:6px}.web-group-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);padding:8px 16px 4px;font-size:11px;font-weight:600}.web-concept-item{width:100%;color:var(--text-muted);font-size:13px;font-family:var(--font-ui);cursor:pointer;text-align:left;background:0 0;border:none;border-left:3px solid #0000;justify-content:space-between;align-items:center;padding:9px 12px 9px 13px;transition:background .15s,color .15s,border-color .15s;display:flex}.web-concept-item:hover{background:var(--input-bg);color:var(--text-primary);border-left-color:var(--accent-border)}.web-concept-item--active{background:var(--accent-soft);color:var(--text-primary);border-left-color:var(--accent)}.web-weak-dot{color:#ff6b6b;opacity:.85;flex-shrink:0;font-size:11px}.web-right{flex-direction:column;flex:1;min-width:0;display:flex;overflow-y:auto}.web-right::-webkit-scrollbar{width:4px}.web-right::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:2px}.web-empty{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:14px;padding:40px;display:flex}.web-empty-nodes{width:90px;height:70px;margin-bottom:10px;position:relative}.web-node{background:var(--accent);border-radius:50%;width:13px;height:13px;position:absolute}.web-node--a{animation:2.2s ease-in-out infinite webPulse;top:0;left:50%;transform:translate(-50%)}.web-node--b{animation:2.2s ease-in-out .7s infinite webPulse;bottom:0;left:8%}.web-node--c{animation:2.2s ease-in-out 1.4s infinite webPulse;bottom:0;right:8%}@keyframes webPulse{0%,to{opacity:.15}50%{opacity:.6}}.web-edge{background:var(--accent-border);transform-origin:0;height:1px;animation:2.2s ease-in-out .35s infinite webPulse;position:absolute}.web-edge--ab{width:48px;top:13px;left:calc(50% - 6px);transform:rotate(57deg)}.web-edge--ac{width:48px;top:13px;left:calc(50% - 42px);transform:rotate(123deg)}.web-empty-title{font-family:var(--font-ui);color:var(--text-primary);margin:0;font-size:22px;font-weight:700}.web-empty-sub{color:var(--text-muted);max-width:300px;margin:0;font-size:14px;line-height:1.65}.web-detail{flex-direction:column;gap:26px;max-width:780px;padding:36px 40px 48px;display:flex}.web-detail-header{flex-direction:column;gap:8px;display:flex}.web-detail-title{font-family:var(--font-ui);color:var(--accent);margin:0;font-size:32px;font-weight:700;line-height:1.15}.web-weak-badge{color:#ff6b6b;background:#ff6b6b1a;border:1px solid #ff6b6b4d;border-radius:20px;align-items:center;width:fit-content;padding:4px 10px;font-size:11.5px;display:inline-flex}.web-connections{grid-template-columns:1fr 1fr;gap:28px;display:grid}.web-col{flex-direction:column;gap:10px;display:flex}.web-col-header{letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px;font-size:11px;font-weight:700}.web-col-header--req{color:#ff6b6b}.web-col-header--ena{color:#6bff9e}.web-col-empty{color:var(--text-muted);margin:0;font-size:13px;font-style:italic}.web-pill-wrap{flex-direction:column;gap:3px;display:flex}.web-pill{font-size:13px;font-family:var(--font-ui);color:var(--text-secondary);text-align:left;cursor:default;border-radius:7px;justify-content:space-between;align-items:center;gap:6px;width:100%;padding:8px 13px;font-weight:500;transition:background .15s,transform .15s;display:inline-flex}.web-pill--req{background:#ff6b6b12;border:1px solid #ff6b6b40}.web-pill--ena{background:#6bff9e0d;border:1px solid #6bff9e33}.web-pill--clickable{cursor:pointer}.web-pill--clickable:hover{transform:translate(3px)}.web-pill--req.web-pill--clickable:hover{background:#ff6b6b24}.web-pill--ena.web-pill--clickable:hover{background:#6bff9e1a}.web-pill--weak{color:#ff9b9b;background:#ff6b6b24!important;border-color:#ff6b6b99!important}.web-pill-arrow{opacity:.5;flex-shrink:0;font-size:11px}.web-pill-hint{color:var(--text-muted);padding-left:2px;font-size:10.5px}.web-insight{background:var(--bg-surface);border:1px solid var(--border);border-left:3px solid var(--accent-border);color:var(--text-muted);border-radius:10px;margin:0;padding:16px 20px;font-size:13.5px;line-height:1.72}.web-insight p{margin:0}.web-actions{flex-wrap:wrap;gap:12px;display:flex}.web-btn{font-size:13px;font-family:var(--font-ui);cursor:pointer;border-radius:8px;padding:10px 20px;font-weight:600;transition:background .18s,transform .15s,border-color .18s,color .18s}.web-btn--primary{background:var(--accent);color:var(--on-accent);border:none}.web-btn--primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.web-btn--secondary{border:1px solid var(--border);color:var(--text-muted);background:0 0}.web-btn--secondary:hover{border-color:var(--accent);color:var(--accent)}.web-btn--weak-active{color:#ff6b6b;border-color:#ff6b6b}.web-btn--weak-active:hover{color:#ff6b6b!important;border-color:#ff6b6b!important}.upgrade-wrapper{flex-direction:column;flex:1;display:flex;overflow-y:auto}.upgrade-wrapper::-webkit-scrollbar{width:4px}.upgrade-wrapper::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:2px}.upgrade-page{flex-direction:column;flex:1;align-items:center;gap:48px;padding:48px 32px 64px;display:flex}.upgrade-header{text-align:center;flex-direction:column;gap:10px;display:flex}.upgrade-title{font-family:var(--font-ui);color:var(--text-primary);letter-spacing:-.01em;margin:0;font-size:36px;font-weight:800}.upgrade-sub{color:var(--text-muted);margin:0;font-size:15px}.upgrade-cards{align-items:center;gap:20px;width:100%;max-width:960px;display:flex}.plan-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;flex-direction:column;flex:1;gap:16px;padding:32px;transition:border-color .2s,box-shadow .2s;display:flex;position:relative}.plan-card--pro{border-color:var(--accent);z-index:1;transform:scale(1.05)}.plan-card--proplus{border-color:var(--border-hover)}.plan-popular-badge{background:var(--accent);color:var(--on-accent);letter-spacing:.08em;white-space:nowrap;border-radius:20px;padding:4px 12px;font-size:9.5px;font-weight:700;position:absolute;top:-13px;left:50%;transform:translate(-50%)}.plan-label{letter-spacing:.08em;color:var(--text-muted);text-transform:uppercase;font-size:11px;font-weight:700}.plan-card--pro .plan-label{color:var(--accent)}.plan-card--proplus .plan-label{color:var(--text-secondary)}.plan-plus{color:var(--accent)}.plan-price{font-family:var(--font-ui);color:var(--text-primary);margin:0;font-size:42px;font-weight:800;line-height:1}.plan-period{color:var(--text-muted);margin-top:-8px;font-size:12.5px}.plan-toggle-wrap{background:var(--sidebar-bg);border:1px solid var(--border);border-radius:8px;gap:3px;padding:3px;display:flex}.plan-toggle-btn{font-size:11px;font-family:var(--font-ui);color:var(--text-muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:6px;flex:1;padding:6px 8px;transition:background .15s,color .15s}.plan-toggle-btn--active{background:var(--accent);color:var(--on-accent);font-weight:600}.plan-save-badge{color:#6bff9e;background:#6bff9e1a;border:1px solid #6bff9e40;border-radius:20px;align-items:center;width:fit-content;margin-top:-6px;padding:3px 10px;font-size:11px;font-weight:600;display:inline-flex}.plan-features{flex-direction:column;flex:1;gap:9px;margin:0;padding:0;list-style:none;display:flex}.plan-feature{color:var(--text-secondary);align-items:center;gap:9px;font-size:13px;line-height:1.45;display:flex}.plan-feature--off{color:var(--text-muted)}.plan-feature-icon{text-align:center;color:#6bff9e;flex-shrink:0;width:16px;font-size:12px}.plan-feature--off .plan-feature-icon{color:var(--text-muted)}.plan-btn{width:100%;font-size:13.5px;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:8px;margin-top:8px;padding:12px 20px;font-weight:600;transition:background .18s,transform .15s,opacity .15s}.plan-btn--disabled{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-muted);cursor:default}.plan-btn--pro{background:var(--accent);color:var(--on-accent)}.plan-btn--pro:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-1px)}.plan-btn--proplus{border:1px solid var(--accent-border);color:var(--accent);background:0 0}.plan-btn--proplus:hover:not(:disabled){background:var(--accent-soft-2);border-color:var(--accent);transform:translateY(-1px)}.plan-btn:disabled{opacity:.7;cursor:not-allowed;transform:none!important}.upgrade-test-note{color:var(--text-muted);text-align:center;letter-spacing:.02em;margin:0;font-size:11.5px}.success-overlay{z-index:2000;background:#000000e0;justify-content:center;align-items:center;animation:.25s ease-out fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.success-box{text-align:center;flex-direction:column;align-items:center;gap:16px;animation:.4s cubic-bezier(.16,1,.3,1) successPop;display:flex}@keyframes successPop{0%{opacity:0;transform:scale(.8)translateY(20px)}to{opacity:1;transform:scale(1)translateY(0)}}.success-check{background:var(--accent-soft);border:2px solid var(--accent);width:80px;height:80px;color:var(--accent);border-radius:50%;justify-content:center;align-items:center;font-size:36px;animation:1.5s ease-in-out infinite checkPulse;display:flex}@keyframes checkPulse{0%,to{box-shadow:0 0 #7a8f634d}50%{box-shadow:0 0 0 16px #7a8f6300}}.success-title{font-family:var(--font-ui);color:var(--text-primary);margin:0;font-size:28px;font-weight:700}.success-sub{color:var(--text-muted);margin:0;font-size:14px}.success-btn{background:var(--accent);color:var(--on-accent);font-size:14px;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:8px;margin-top:8px;padding:12px 28px;font-weight:600;transition:background .18s,transform .15s}.success-btn:hover{background:var(--accent-hover);transform:translateY(-1px)}.settings-page,.account-page{flex-direction:column;gap:28px;max-width:680px;margin:0 auto;display:flex}.settings-title{font-family:var(--font-ui);color:var(--text-primary);font-size:26px;font-weight:700}.set-section{flex-direction:column;display:flex}.set-section--disabled{opacity:.55}.set-section-label{letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);border-bottom:1px solid var(--border);align-items:center;gap:10px;margin-bottom:4px;padding-bottom:10px;font-size:11px;font-weight:700;display:flex}.set-soon{letter-spacing:.06em;color:var(--text-muted);border:1px solid var(--border);border-radius:10px;padding:2px 8px;font-size:10px}.set-row{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;padding:16px 2px;display:flex}.set-row-label{flex-direction:column;gap:3px;display:flex}.set-row-title{color:var(--text-primary);font-size:14px;font-weight:500}.set-row-hint{color:var(--text-muted);font-size:12px}.set-row-control{flex-shrink:0}.set-toggle{background:var(--text-muted);cursor:pointer;width:44px;height:24px;transition:background var(--dur-base) var(--ease-in-out);border:none;border-radius:12px;padding:0;position:relative}.set-toggle--on{background:var(--accent)}.set-toggle--disabled{cursor:not-allowed}.set-toggle-knob{background:var(--bg-base);width:18px;height:18px;transition:transform var(--dur-base) var(--ease-in-out);border-radius:50%;position:absolute;top:3px;left:3px}.set-toggle--on .set-toggle-knob{transform:translate(20px)}.set-segmented{background:var(--input-bg);border:1px solid var(--border);border-radius:8px;gap:3px;padding:3px;display:inline-flex}.set-seg-btn{color:var(--text-secondary);font-size:13px;font-family:var(--font-ui);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:6px;padding:6px 12px;font-weight:500;transition:background .18s,color .18s}.set-seg-btn:hover{color:var(--text-secondary)}.set-seg-btn--active{background:var(--accent);color:var(--on-accent);font-weight:600}.set-input{background:var(--input-bg);border:1px solid var(--border);color:var(--text-primary);font-size:14px;font-family:var(--font-ui);border-radius:8px;outline:none;width:100%;padding:10px 12px;transition:border-color .18s}.set-input:focus{border-color:var(--accent)}.set-input--inline{width:220px}.set-name-row{align-items:center;gap:8px;display:flex}.set-save-btn{background:var(--accent);color:var(--on-accent);font-size:13px;font-weight:600;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:8px;padding:9px 16px;transition:background .18s,opacity .18s}.set-save-btn:hover:not(:disabled){background:var(--accent-hover)}.set-save-btn:disabled{opacity:.4;cursor:default}.set-readonly{color:var(--text-secondary);font-size:14px}.set-action-btn{border:1px solid var(--border-hover);color:var(--text-secondary);font-size:13px;font-weight:500;font-family:var(--font-ui);cursor:pointer;background:0 0;border-radius:8px;padding:9px 16px;transition:border-color .18s,color .18s}.set-action-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.set-action-btn:disabled{opacity:.4;cursor:not-allowed}.set-action-btn--accent{border-color:var(--accent);color:var(--accent)}.set-danger-zone{background:#ff6b6b0d;border:1px solid #ff6b6b;border-radius:10px;justify-content:space-between;align-items:center;gap:16px;margin-top:18px;padding:16px;display:flex}.set-danger-text{flex-direction:column;gap:3px;display:flex}.set-danger-title{color:#ff6b6b;font-size:14px;font-weight:600}.set-btn-danger{color:#0a0a0a;font-size:13px;font-weight:600;font-family:var(--font-ui);cursor:pointer;background:#ff6b6b;border:none;border-radius:8px;flex-shrink:0;padding:9px 16px;transition:background .18s,opacity .18s}.set-btn-danger:hover:not(:disabled){background:#ff9b9b}.set-btn-danger:disabled{opacity:.4;cursor:not-allowed}.set-plan-badge{letter-spacing:.05em;border-radius:20px;padding:4px 12px;font-size:12px;font-weight:700}.set-plan-badge--free{background:var(--border-hover);color:var(--text-secondary)}.set-plan-badge--pro{background:var(--accent);color:var(--on-accent)}.set-plan-badge--proplus{background:var(--bg-elevated);color:var(--text-primary)}.set-upgrade-prompt{border:1px solid var(--border);background:var(--accent-soft-2);color:var(--text-secondary);border-radius:10px;justify-content:space-between;align-items:center;gap:16px;margin-top:14px;padding:16px;font-size:14px;display:flex}.set-modal-backdrop{z-index:1000;background:#000000b3;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.set-modal{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:12px;width:100%;max-width:380px;padding:26px;display:flex}.set-modal-title{color:var(--text-primary);font-size:18px;font-weight:700}.set-modal-title--danger{color:#ff6b6b}.set-modal-text{color:var(--text-secondary);font-size:13px;line-height:1.6}.set-modal-error{color:#ff6b6b;background:#ff6b6b14;border-radius:6px;padding:8px 10px;font-size:13px}.set-modal-actions{justify-content:flex-end;gap:10px;margin-top:6px;display:flex}.set-btn-primary{background:var(--accent);color:var(--on-accent);font-size:13px;font-weight:600;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:8px;padding:9px 18px}.set-btn-primary:hover:not(:disabled){background:var(--accent-hi)}.set-btn-primary:disabled{opacity:.4;cursor:not-allowed}.set-btn-ghost{color:var(--text-secondary);border:1px solid var(--border-hover);font-size:13px;font-weight:500;font-family:var(--font-ui);cursor:pointer;background:0 0;border-radius:8px;padding:9px 18px}.set-btn-ghost:hover:not(:disabled){border-color:var(--text-muted);color:var(--text-primary)}.acc-profile-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;justify-content:space-between;align-items:center;gap:16px;padding:24px;display:flex}.acc-profile-left{align-items:center;gap:18px;display:flex}.acc-avatar{background:var(--accent);width:64px;height:64px;color:var(--on-accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:28px;font-weight:700;display:flex}.acc-profile-info{flex-direction:column;gap:3px;display:flex}.acc-name{color:var(--text-primary);font-size:22px;font-weight:700}.acc-email{color:var(--text-secondary);font-size:13px}.acc-member{color:var(--text-muted);margin-top:2px;font-size:12px}.acc-profile-right{flex-direction:column;align-items:flex-end;gap:8px;display:flex}.acc-plan-badge{letter-spacing:.06em;border-radius:20px;padding:5px 14px;font-size:12px;font-weight:700}.acc-plan-badge--free{background:var(--border-hover);color:var(--text-secondary)}.acc-plan-badge--pro{background:var(--accent);color:var(--on-accent)}.acc-plan-badge--proplus{background:var(--bg-elevated);color:var(--text-primary)}.acc-upgrade-link{color:var(--accent);font-size:13px;font-weight:600;font-family:var(--font-ui);cursor:pointer;background:0 0;border:none}.acc-upgrade-link:hover{text-decoration:underline}.acc-stats-grid{grid-template-columns:1fr 1fr;gap:14px;display:grid}.acc-stat-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:6px;padding:22px;display:flex}.acc-stat-num{color:var(--accent);font-size:30px;font-weight:700;line-height:1}.acc-stat-sub{color:var(--text-secondary);font-size:13px}.acc-section{flex-direction:column;gap:16px;display:flex}.acc-section-title{letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);font-size:11px;font-weight:700}.acc-bars{flex-direction:column;gap:12px;display:flex}.acc-bar-row{align-items:center;gap:12px;display:flex}.acc-bar-label{width:92px;color:var(--text-secondary);flex-shrink:0;font-size:13px}.acc-bar-track{background:var(--border);border-radius:5px;flex:1;height:10px;overflow:hidden}.acc-bar-fill{border-radius:5px;height:100%;transition:width .4s}.acc-bar-pct{text-align:right;width:40px;color:var(--text-secondary);flex-shrink:0;font-size:13px}.acc-badges{grid-template-columns:1fr 1fr;gap:12px;display:grid}.acc-badge{border:1px solid var(--border);background:var(--bg-surface);opacity:.5;filter:grayscale(.6);border-radius:10px;align-items:center;gap:12px;padding:14px;transition:opacity .2s,border-color .2s;display:flex}.acc-badge--unlocked{opacity:1;filter:none;border-color:var(--accent);background:var(--accent-soft-2)}.acc-badge-icon{flex-shrink:0;font-size:26px}.acc-badge-text{flex-direction:column;gap:2px;display:flex}.acc-badge-title{color:var(--text-primary);font-size:14px;font-weight:600}.acc-badge-desc{color:var(--text-muted);font-size:12px;line-height:1.4}.acc-detail-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;flex-direction:column;padding:4px 20px 0;display:flex}.acc-detail-row{border-bottom:1px solid var(--hairline);flex-direction:column;gap:8px;padding:14px 0;display:flex}.acc-detail-row:last-child{border-bottom:none}.acc-detail-row-label{color:var(--text-mid);font-size:13px;font-family:var(--font-ui);font-weight:500}.set-usage-block{flex-direction:column;gap:8px;display:flex}.set-usage-label{color:var(--text-mid);font-size:13px;font-family:var(--font-ui)}.set-usage-bar-track{background:var(--hairline);border-radius:3px;height:6px;overflow:hidden}.set-usage-bar-fill{border-radius:3px;height:100%;transition:width .4s}.set-usage-text{color:var(--text-mid);font-size:13px;font-family:var(--font-ui)}@media (width<=560px){.acc-stats-grid,.acc-badges{grid-template-columns:1fr}.set-input--inline{width:100%}}:root[data-theme=light] .input-box{box-shadow:0 2px 12px #00000014}:root[data-theme=light] .message-content pre{background:#f0f0f0;border-color:#e0e0e0}:root[data-theme=light] .message-content pre,:root[data-theme=light] .message-content pre code{color:#1a1a1a}:root[data-theme=light] .katex,:root[data-theme=light] .math-block,:root[data-theme=light] .message-content .katex{color:var(--text-primary)}.new-chat-btn,.action-btn,.verify-btn,.dna-practice-btn,.set-save-btn,.set-action-btn,.set-btn-danger,.icon-btn,.send-btn,.sidebar-toggle,.model-selector{transition:all var(--dur-fast) var(--ease-out)}.new-chat-btn:hover:not(:disabled),.action-btn:hover:not(:disabled),.verify-btn:hover:not(:disabled),.dna-practice-btn:hover:not(:disabled),.set-save-btn:hover:not(:disabled),.set-action-btn:hover:not(:disabled),.set-btn-danger:hover:not(:disabled),.icon-btn:hover:not(:disabled),.sidebar-toggle:hover:not(:disabled),.model-selector:hover:not(:disabled){filter:brightness(1.05);transform:translateY(-1px)}.new-chat-btn:active:not(:disabled),.action-btn:active:not(:disabled),.verify-btn:active:not(:disabled),.dna-practice-btn:active:not(:disabled),.set-save-btn:active:not(:disabled),.set-action-btn:active:not(:disabled),.set-btn-danger:active:not(:disabled),.icon-btn:active:not(:disabled),.send-btn:active:not(:disabled),.sidebar-toggle:active:not(:disabled),.model-selector:active:not(:disabled){filter:brightness();transform:translateY(0)scale(.98)}.new-chat-btn:disabled,.action-btn:disabled,.verify-btn:disabled,.dna-practice-btn:disabled,.set-save-btn:disabled,.set-action-btn:disabled,.set-btn-danger:disabled,.icon-btn:disabled,.send-btn:disabled{filter:none;transform:none}.send-btn--active:hover,.stop-btn:hover{transform:translateY(-1px)}.nav-item:before{content:"";background:var(--accent);opacity:0;width:3px;height:18px;transition:transform var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out);border-radius:0 3px 3px 0;position:absolute;top:50%;left:0;transform:translate(-6px,-50%)}.nav-item--active:before{opacity:1;transform:translateY(-50%)}.dna-summary-card,.dna-topic-row,.plan-card,.acc-stat-card,.acc-profile-card{transition:transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out)}.dna-summary-card:hover,.dna-topic-row:hover,.plan-card:hover,.acc-stat-card:hover,.acc-profile-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000002e}:root[data-theme=light] .dna-summary-card:hover,:root[data-theme=light] .dna-topic-row:hover,:root[data-theme=light] .plan-card:hover,:root[data-theme=light] .acc-stat-card:hover,:root[data-theme=light] .acc-profile-card:hover{box-shadow:0 8px 24px #00000014}.input-box,.set-input{transition:border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out)}.set-input:focus{box-shadow:0 0 0 3px var(--accent-soft)}.plan-badge,.set-plan-badge,.mistake-pill{transition:transform var(--dur-fast) var(--ease-out)}.plan-badge:hover,.set-plan-badge:hover,.mistake-pill:hover{transform:scale(1.02)}.ai-message:has(.ai-text):not(:has(.message-actions)) .ai-text:after{content:"";vertical-align:text-bottom;background:var(--accent);width:2px;height:1.05em;animation:caretBlink 1s var(--ease-in-out) infinite;border-radius:1px;margin-left:2px;display:inline-block}@keyframes caretBlink{0%,to{opacity:1}50%{opacity:0}}.insight-card{background:var(--raised);border:1px solid var(--hairline);border-radius:var(--radius);width:100%;max-width:420px;transition:border-color var(--dur-base) var(--ease-out);padding:16px 20px}.insight-card:hover{border-color:var(--accent-border)}.insight-label{letter-spacing:.08em;color:var(--text-low);text-transform:uppercase;margin-bottom:8px;font-size:11px}.insight-title{color:var(--text-hi);margin-bottom:5px;font-size:17px;font-weight:600}.insight-body{color:var(--text-mid);font-size:13px;line-height:1.5}.insight-footer{justify-content:space-between;align-items:center;margin-top:14px;display:flex}.insight-action{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:0;font-family:inherit;font-size:13px;font-weight:500}.insight-action:hover{text-decoration:underline}.insight-dismiss{color:var(--text-low);cursor:pointer;background:0 0;border:none;padding:0;font-family:inherit;font-size:18px;line-height:1}.insight-dismiss:hover{color:var(--text-mid)}.insight-card--p1{border-left:3px solid var(--accent)}.insight-card--p2{border-left:3px solid var(--warning)}.insight-card--p3{border-left:3px solid var(--text-low)}.greeting-name{color:var(--accent)}@media (width<=880px){.main:after{height:calc(160px + env(safe-area-inset-bottom,0px));left:0}.input-wrapper{left:0;bottom:calc(16px + env(safe-area-inset-bottom,0px))}.welcome-greeting{font-size:28px}.empty-state{padding-bottom:200px}.welcome-question{padding:0 16px;font-size:14px}.chat-area{padding-bottom:180px}.input-disclaimer{font-size:10px}.insight-card{max-width:100%}.upgrade-page{padding:32px 16px 48px}.upgrade-title{font-size:24px}.upgrade-cards{flex-direction:column;align-items:stretch}.plan-card--pro{transform:none}.plan-price{font-size:36px}}
