:root{--background:#fff;--foreground:#18181b;--muted:#f5f5f5;--muted-fg:#71717a;--border:#e8e8eb;--card:#fff;--sidebar:#fbfbfc;--accent:#2563eb;--accent-soft:#eef4ff;--shadow:0 2px 5px #18181b05;--radius:10px;color-scheme:light}
:root[data-theme=dark]{--background:#141416;--foreground:#fafafa;--muted:#242428;--muted-fg:#a1a1aa;--border:#303036;--card:#1b1b1e;--sidebar:#18181b;--accent:#93b5ff;--accent-soft:#202c46;--shadow:none;color-scheme:dark}
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20px;background:var(--foreground);color:var(--background);z-index:100}.skip-link:focus{top:12px}.sidebar{position:fixed;inset:0 auto 0 0;width:252px;background:var(--sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:29px 17px 0;z-index:40}.brand{display:flex;gap:11px;align-items:center;padding:0 8px;font-size:17px;font-weight:650;letter-spacing:-.6px}.brand-mark{width:39px;height:39px;border-radius:11px;background:#18181b;color:#fff;font-size:31px;line-height:36px;text-align:center;font-weight:700;position:relative;font-family:Arial;letter-spacing:-1.8px;padding-right:7px}.brand-mark span{position:absolute;right:6px;top:-5px;font-size:20px}.brand strong{font-weight:750}.brand small{display:block;font-size:8px;letter-spacing:1.25px;margin-top:1px;font-weight:500;color:var(--muted-fg)}.workspace-label{display:flex;align-items:center;gap:6px;font-size:10px;color:var(--muted-fg);margin:30px 9px 13px}.tiny-dot{width:5px;height:5px;background:#3b82f6;border-radius:50%}.badge{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--border);background:var(--card);border-radius:5px;padding:1px 6px;font-size:10px;white-space:nowrap;line-height:1.7;letter-spacing:0}.workspace-label .badge{margin-left:auto;font-size:9px;padding:0 5px}.main-nav{display:flex;flex-direction:column;gap:5px}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;color:var(--muted-fg);font-size:12px;border-radius:7px;min-height:40px}.nav-link:hover{background:var(--muted);color:var(--foreground)}.nav-link.active{background:var(--foreground);color:var(--background);box-shadow:var(--shadow)}.nav-link svg{width:16px;height:16px}.nav-count{margin-left:auto;font-size:10px;background:var(--muted);padding:0 6px;border-radius:4px;color:var(--muted-fg);line-height:19px}.active 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22px}.side-progress>div:first-child{display:flex;justify-content:space-between;font-size:10px;color:var(--muted-fg);margin-bottom:9px}.side-progress strong{font-weight:500;color:var(--foreground)}.progress-track{height:4px;background:var(--border);border-radius:10px;overflow:hidden}.progress-track>div{height:100%;background:var(--foreground);border-radius:10px;transition:width .3s}.author{border-top:1px solid var(--border);padding:18px 9px 20px;display:flex;align-items:center;gap:9px}.avatar{display:flex;justify-content:center;align-items:center;width:33px;height:33px;border-radius:50%;background:#ede8e0;color:#49413a;font-family:Georgia;font-size:19px;font-weight:500}.author strong{font-size:10px;font-weight:600;display:block}.author small{font-size:8px;letter-spacing:1px;color:var(--muted-fg)}.author-arrow{margin-left:auto;color:#a1a1aa}.author-arrow svg{width:14px;height:14px}.main-shell{margin-left:252px}.topbar{height:72px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;padding:0 40px;gap:15px;background:var(--background)}.breadcrumb{display:flex;align-items:center;gap:13px;font-size:11px;color:var(--muted-fg);white-space:nowrap}.breadcrumb-icon{padding-right:16px;border-right:1px solid var(--border);color:var(--foreground)}.breadcrumb-icon svg{width:16px;height:16px}.breadcrumb strong{font-weight:500;color:var(--foreground)}.crumb-slash{color:#d4d4d8}.top-actions{display:flex;align-items:center;gap:13px}.top-search{display:flex;align-items:center;gap:9px;color:var(--muted-fg);font-size:11px;background:var(--sidebar);border:1px solid var(--border);padding:7px 10px;border-radius:6px;width:262px}.top-search svg{width:14px;height:14px}.top-search kbd{margin-left:auto;color:#a1a1aa;font-size:9px;border:1px solid var(--border);border-radius:3px;padding:0 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9px}.btn.ghost{background:transparent;border-color:transparent;box-shadow:none}.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;background-image:radial-gradient(var(--border) 1px,transparent 1px);background-size:16px 16px;padding:29px 25px 32px 8px}.workflow-visual{width:100%;max-width:335px;transform:rotate(-2deg);position:relative}.visual-label{display:flex;justify-content:space-between;align-items:center;margin:0 9px 11px;font-size:9px;color:var(--muted-fg);letter-spacing:.6px}.visual-label span:last-child{color:#16a34a;font-size:8px;display:flex;align-items:center;gap:4px}.visual-label span:last-child:before{content:'';width:4px;height:4px;border-radius:50%;background:#22c55e}.visual-card{border:1px solid var(--border);border-radius:9px;background:var(--card);box-shadow:0 8px 20px #00000005;padding:14px 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var(--border);border-radius:7px;white-space:pre-wrap;font-size:13px;line-height:2;max-height:45vh;overflow:auto;user-select:text}.modal-actions{display:flex;justify-content:space-between;gap:10px;margin-top:20px}.toast{position:fixed;bottom:28px;left:calc(50% + 126px);transform:translate(-50%,15px);border:1px solid var(--border);background:var(--foreground);color:var(--background);padding:12px 19px;border-radius:8px;box-shadow:0 5px 30px #0002;font-size:12px;opacity:0;transition:all .2s;pointer-events:none;z-index:100;max-width:calc(100vw - 30px);width:max-content}.toast.show{opacity:1;transform:translate(-50%,0)}.mobile-overlay{display:none}.about-strip{padding:22px 25px;border:1px solid var(--border);background:var(--sidebar);border-radius:10px;display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:36px}.about-strip h3{font-size:13px;margin-bottom:5px}.about-strip p{font-size:11px;color:var(--muted-fg)}.about-strip .avatar{flex-shrink:0;width:40px;height:40px;font-size:25px}.about-strip-left{display:flex;align-items:center;gap:14px}
@media(min-width:1450px){main{padding-top:44px}.hero-copy{padding:42px}.hero h2{font-size:42px}.hero-visual{padding:32px}.workflow-visual{max-width:355px}.hero{min-height:350px}.hero-copy>p{font-size:13px}.chapter-card-body{padding:25px}.chapter-card h3{font-size:17px}.chapter-card p{font-size:12px}}
@media(max-width:1180px){.sidebar{width:225px;padding-left:13px;padding-right:13px}.main-shell{margin-left:225px}main{padding:30px 28px}.topbar{padding:0 28px}.top-search{width:220px}.hero-copy{padding:30px 25px}.hero h2{font-size:31px}.hero-visual{padding-left:0;padding-right:19px}.hero-buttons{flex-wrap:wrap}.stat{padding:0 18px}.chapter-card-body{padding:18px 16px}.chapter-card-footer{padding:11px 16px}.chapter-card h3{font-size:14px}.reader-layout{grid-template-columns:minmax(0,1fr) 170px;gap:25px}.toast{left:calc(50% + 112px)}.filter-row{flex-wrap:wrap}.prompt-card{padding:17px}.top-actions{gap:7px}}
@media(max-width:1000px){.top-search{width:35px;padding:8px;background:transparent;border:0}.top-search>span:not(:first-child),.top-search kbd{display:none}.hero{grid-template-columns:1fr 0.85fr}.hero h2{font-size:28px}.hero-copy{padding:28px 23px}.hero-copy>p{font-size:11px}.hero-buttons{gap:7px}.hero-buttons .btn{font-size:10px;padding:8px 10px}.visual-card{padding:12px}.visual-lower{gap:7px}.visual-card-top{gap:7px}.visual-card-top strong{font-size:10px}.visual-card-top small{font-size:8px}.visual-lower .visual-card{padding:10px 8px}.app-icon{width:28px;height:31px}.app-icon svg{width:18px;height:18px}.visual-prompt{font-size:9px;padding:7px}.stats{grid-template-columns:1fr 1.2fr 1fr 1.1fr}.stat{padding:0 13px}.stat p{font-size:9px}.prompt-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.card-grid{gap:11px}.chapter-card h3{font-size:13px}.chapter-card p{font-size:10px}.reader-layout{display:block}.reader-aside{display:none}.tools-strip{align-items:flex-start;flex-direction:column;gap:12px}.prompt-feature{grid-template-columns:.9fr 1.2fr}.prompt-feature-intro{padding:22px 19px}.prompt-preview{padding:20px 18px}.tab{padding:5px 10px}}
@media(max-width:780px){.sidebar{transform:translateX(-100%);transition:transform .25s;width:252px;padding-left:17px;padding-right:17px}.sidebar.open{transform:translateX(0)}.mobile-overlay.open{display:block;position:fixed;inset:0;background:#0005;z-index:35}.main-shell{margin-left:0}.mobile-menu{display:inline-flex}.breadcrumb-icon{display:none}.topbar{height:61px;padding:0 19px}.breadcrumb{gap:10px;font-size:10px}.top-actions{gap:4px}.source-top{display:none}main{padding:28px 22px 35px}.page-heading{margin-bottom:20px}.page-heading h1{font-size:24px}.hero h2{font-size:33px}.hero-copy{padding:30px}.hero-copy>p{font-size:12px}.hero-buttons .btn{font-size:11px}.hero-visual{padding:22px 20px 22px 0}.hero{grid-template-columns:1fr 1fr}.card-grid{gap:13px}.chapter-card h3{font-size:14px}.chapter-card p{font-size:11px}.toast{left:50%}.footer{padding:22px}.stats{margin-bottom:30px}.stat{padding:0 17px}.stat p{font-size:10px}.brand{font-size:17px}}
@media(max-width:590px){.hero{grid-template-columns:1fr}.hero-copy{padding:28px 25px 12px}.hero h2{font-size:34px}.hero-copy>p{max-width:100%}.hero-buttons{margin-top:21px}.hero-visual{padding:20px 25px 25px;min-height:245px}.workflow-visual{max-width:310px;transform:none}.visual-card{padding:12px 15px}.visual-lower .visual-card{padding:12px}.visual-label{margin-bottom:8px}.visual-prompt{margin-top:9px}.visual-note{margin-top:10px}.visual-lower{gap:12px}.visual-card-top strong{font-size:11px}.visual-card-top small{font-size:9px}.stats{grid-template-columns:1fr 1fr;gap:20px 0;padding-bottom:23px;margin-top:23px}.stat{padding:0 12px 0 18px}.stat:first-child,.stat:nth-child(3){padding-left:3px}.stat:nth-child(2){border:0}.stat strong{font-size:26px}.stat p{font-size:10px}.stat:last-child .progress-track{max-width:150px}.card-grid{grid-template-columns:1fr}.chapter-card-body{padding:20px}.chapter-card-top{margin-bottom:16px}.chapter-card h3{font-size:17px}.chapter-card p{font-size:12px}.chapter-card-footer{padding:12px 20px;font-size:10px}.chapter-label{font-size:10px}.section-header h2{font-size:18px}.section-header p{font-size:11px}.tabs{width:100%;justify-content:space-between;gap:0}.tab{font-size:10px;padding:5px 9px}.prompt-feature{grid-template-columns:1fr}.prompt-feature-intro{padding:23px}.prompt-feature-intro h3{font-size:20px}.prompt-feature-intro p{font-size:12px}.prompt-preview{padding:23px}.prompt-feature-intro .btn{margin-top:15px}.prompt-grid{grid-template-columns:1fr}.prompt-card{padding:22px}.prompt-card h3{font-size:16px}.prompt-card .excerpt{font-size:12px;min-height:auto}.filter-row{gap:12px}.filter-row .tabs{flex-wrap:wrap;justify-content:flex-start;gap:2px}.filter-row .tab{padding:6px 10px}.content-toolbar{gap:7px}.search-field{padding:10px}.select{max-width:109px;padding:11px 7px;font-size:10px}.search-field input{font-size:11px}.footer{flex-direction:column;gap:10px;font-size:9px}.about-strip{align-items:flex-start;flex-direction:column;padding:20px}.about-strip .text-link{padding-left:54px}.reader-head h1{font-size:26px}.reader-top{align-items:flex-start}.reader-top .btn{font-size:10px}.article{font-size:13px}.reader-meta{gap:9px;flex-wrap:wrap}.prompt-modal{padding:22px}.prompt-modal h2{font-size:21px}.prompt-full{padding:16px;font-size:12px}.modal-actions{flex-wrap:wrap}.modal-actions .btn{font-size:11px}.dialog-search{gap:9px;padding:15px}.dialog-search input{font-size:12px}.search-result{font-size:11px}.search-result small{max-width:75px;font-size:8px}.top-search{width:30px}.breadcrumb{gap:8px}.top-actions .icon-button{width:30px}.eyebrow{font-size:8px}.page-heading p{font-size:11px}.tools-strip{margin-top:23px}.tool-links{gap:12px}.hero-kicker{font-size:10px}.reading-end .btn{font-size:11px}}
@media(max-width:360px){.breadcrumb>span{display:none}.topbar{gap:8px}.breadcrumb{min-width:0}.breadcrumb strong{max-width:150px;overflow:hidden;text-overflow:ellipsis}.top-actions{flex-shrink:0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}